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201. Detection of Non-Brownian Diffusion in the Cell Membrane in Single Molecule Tracking

Author

Kokoro Iwasawa, Akihiro Kusumi, Xiao-Yuan Shan, Junko Kondo, Ken Ritchie, and Takahiro K. Fujiwara

Subjects
Microscopy, Video, Anomalous diffusion, Chemistry, Ensemble averaging, Monte Carlo method, Cell Membrane, Analytical chemistry, Biophysics, Tracking (particle physics), Frame rate, Kidney, Molecular physics, Models, Biological, Diffusion, Protein Transport, Microscopy, Fluorescence, Models, Chemical, Cell Biophysics, Receptors, Transferrin, Particle, Animals, Computer Simulation, Dipodomys, Diffusion (business), Brownian motion
Abstract

Molecules undergo non-Brownian diffusion in the plasma membrane, but the mechanism behind this anomalous diffusion is controversial. To characterize the anomalous diffusion in the complex system of the plasma membrane and to understand its underlying mechanism, single-molecule/particle methods that allow researchers to avoid ensemble averaging have turned out to be highly effective. However, the intrinsic problems of time-averaging (resolution) and the frequency of the observations have not been explored. These would not matter for the observations of simple Brownian particles, but they do strongly affect the observation of molecules undergoing anomalous diffusion. We examined these effects on the apparent motion of molecules undergoing simple, totally confined, or hop diffusion, using Monte Carlo simulations of particles undergoing short-term confined diffusion within a compartment and long-term hop diffusion between these compartments, explicitly including the effects of time-averaging during a single frame of the camera (exposure time) and the frequency of observations (frame rate). The intricate relationships of these time-related experimental parameters with the intrinsic diffusion parameters have been clarified, which indicated that by systematically varying the frame time and rate, the anomalous diffusion can be clearly detected and characterized. Based on these results, single-particle tracking of transferrin receptor in the plasma membrane of live PtK2 cells were carried out, varying the frame time between 0.025 and 33ms (0.03–40kHz), which revealed the hop diffusion of the receptor between 47-nm (average) compartments with an average residency time of 1.7ms, with the aid of single fluorescent-molecule video imaging.

Published
2005
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202. Design and implementation of SFQ programmable clock generators

Author

Hirotaka Terai, Nobuyuki Yoshikawa, N. Nakajima, Akira Fujimaki, Shinichi Yorozu, M. Ito, and K. Fujiwara

Subjects
RSFQ circuits, Computer science, Oscillation, business.industry, clock generator, Electrical engineering, Energy Engineering and Power Technology, Ranging, cell-based design, Ring oscillator, Control circuit, Condensed Matter Physics, Electronic, Optical and Magnetic Materials, SFQ, Clock generator, State (computer science), ring oscillator, Electrical and Electronic Engineering, Variable number, business, Microelectronic circuits
Abstract

We have designed and implemented an SFQ programmable clock generator (PCG), which can generate the variable number of SFQ pulses according to its internal state. The PCG is composed of an SFQ ring oscillator, a control circuit which counts up the number of SFQ pulses and stops the operation of the ring oscillator, and a decoder which defines the initial state of the control circuit. The PCG can generate the variable number of SFQ pulses ranging from 2 to 2(N), where N is the number of T flip-flops in the control circuit. The oscillation frequency of the PCG is designed to be ranging from 6.2 to 18.8 GHz. In this study, we have implemented a PCG generating SFQ pulses ranging from 2 to 2(4) using a cell-based design methodology and confirmed its correct functionality. (C) 2004 Elsevier B.V. All rights reserved.

Published
2004

203. High-speed test of SFQ-shift register files using PTL wiring

Author

Akira Fujimaki, Yoshihito Hashimoto, Y. Yamashiro, Hirotaka Terai, Nobuyuki Yoshikawa, K. Fujiwara, and Shinichi Yorozu

Subjects
business.industry, Computer science, Speed test, Process (computing), Energy Engineering and Power Technology, Condensed Matter Physics, Electronic, Optical and Magnetic Materials, law.invention, memory, Microprocessor, SFQ, passive transmission line, shift register, law, Transmission line, Memory architecture, Electrical and Electronic Engineering, business, Computer hardware, Shift register, Electronic circuit, DC bias
Abstract

We have been developing an SFQ shift register memory, which is one candidate to realize high-throughput and high-density superconductive memories. We have modified our memory architecture in order to adapt it to our SFQ microprocessor, CORE1. The new version of the shift register memory is composed of shift registers with nondestructive readout operation, which have an internal feedback. We have also studied the availability of passive transmission line (PTL) wiring in the memory system at high speed. The tested circuit is a 4-byte shift register file, where four kinds of wiring circuits are used between a decoder and shift registers. We have measured the dependences of the DC bias margin on the operating frequency for all wiring methods, and obtained almost the same dependences, which shows the availability of the PTL wiring in the memory system. We have used the NEC 2.5 kA/cm(2) Nb standard process and the CONNECT cell library. (C) 2004 Elsevier B.V. All rights reserved.

Published
2004

204. Stable phylloplane colonization by entomopathogenic bacteriumPseudomonas fluorescensKPM-018P and biological control of Phytophagous ladybird beetlesEpilachna vigintioctopunctata(Coleoptera: Coccinellidae)

Author

Shigeyuki Mayama, N. Azuma, Takeshi Shinogi, Yasuyuki Sakuratani, H. Ueki, Koji Kakutani, M. Matsumoto, Yukio Tosa, Y. Otsu, Mori Hirofumi, Hideyoshi Toyoda, K. Fujiwara, Yoshinori Matsuda, Teruo Nonomura, and T. Nakajima

Subjects
Larva, fungi, Biological pest control, Pseudomonas fluorescens, Biology, biology.organism_classification, chemistry.chemical_compound, Chitin, chemistry, Insect Science, Botany, Chitinase, biology.protein, Coccinellidae, Phyllosphere, Agronomy and Crop Science, Bacteria
Abstract

An entomopathogenic bacterium was isolated from tomato leaves and used as a microbial agent to control larvae of phytophagous ladybird beetles Epilachna vigintioctopunctata. The isolate was identified as Pseudomonas fluorescens KPM-018P on the basis of its bacteriological characteristics. KPM-018P produced extracellular chitinase to form a transparent zone around their colonies by hydrolyzing chitin in a minimal medium. Pale-yellow colonies turned red after a change of incubation temperature. These characteristics were availed as markers for tracking KPM-018P. The bacteria produced biosurfactants that enabled the bacteria to stably colonize the hydrophobic leaf surface; they were recovered without any considerable decrease even after a suspension of KPM-018P was sprayed onto leaves. KPM-018P, transformed with the gfp gene and observed with fluorescence microscopy, stably dwelled in the junctions of epidermal cells of bacteria-sprayed leaves. Ingestion of KPM-018P-sprayed leaves by the larvae caused prompt...

Published
2004

205. Ultrafine Membrane Compartments for Molecular Diffusion as Revealed by Single Molecule Techniques

Author

Kenichi G. N. Suzuki, Takahiro K. Fujiwara, Ken Ritchie, Akihiro Kusumi, Hideji Murakoshi, H. Yamashita, Yasuhiro Umemura, Ryota Iino, K. Murase, and Mihoko Saito

Subjects
Biophysics, CHO Cells, Cell membrane, Cricetulus, Cricetinae, medicine, Membrane fluidity, Animals, Humans, Semipermeable membrane, Cells, Cultured, Cytoskeleton, Fluorescent Dyes, Molecular diffusion, biology, Chemistry, Membrane transport protein, Phosphatidylethanolamines, Cell Membrane, Models, Theoretical, Transmembrane protein, Cell Compartmentation, Extracellular Matrix, Rats, Cell biology, Cholesterol, Membrane, medicine.anatomical_structure, Cell Biophysics, biology.protein, HeLa Cells, Elasticity of cell membranes
Abstract

Plasma membrane compartments, delimited by transmembrane proteins anchored to the membrane skeleton (anchored-protein picket model), would provide the membrane with fundamental mosaicism because they would affect the movement of practically all molecules incorporated in the cell membrane. Understanding such basic compartmentalized structures of the cell membrane is critical for further studies of a variety of membrane functions. Here, using both high temporal-resolution single particle tracking and single fluorescent molecule video imaging of an unsaturated phospholipid, DOPE, we found that plasma membrane compartments generally exist in various cell types, including CHO, HEPA-OVA, PtK2, FRSK, HEK293, HeLa, T24 (ECV304), and NRK cells. The compartment size varies from 30 to 230 nm, whereas the average hop rate of DOPE crossing the boundaries between two adjacent compartments ranges between 1 and 17 ms. The probability of passing a compartment barrier when DOPE is already at the boundary is also cell-type dependent, with an overall variation by a factor of approximately 7. These results strongly indicate the necessity for the paradigm shift of the concept on the plasma membrane: from the two-dimensional fluid continuum model to the compartmentalized membrane model in which its constituent molecules undergo hop diffusion over the compartments.

Published
2004

206. Li NMR in LiV2O4under high pressure

Author

Kiyotaka Miyoshi, Yoshiyuki Shimaoka, Tatsuo C. Kobayashi, K. Fujiwara, and Jun Takeuchi

Subjects
Range (particle radiation), Condensed matter physics, Chemistry, Relaxation rate, High pressure, Phase (matter), Antiferromagnetism, General Materials Science, Wave vector, Knight shift, Condensed Matter Physics, Power law
Abstract

The Knight shift K and the nuclear spin–lattice relaxation time T1 of 7Li have been measured under high pressure up to 4.74 GPa. 1/T1T becomes larger on applying higher pressure below 10 K and does not obey the T1T = constant relation down to 1 K. Meanwhile, K is independent of pressure above 2 GPa, indicating that the uniform component of the susceptibility does not change under high pressure. These results indicate that some antiferromagnetic fluctuations with wavevector dominate the relaxation rate in LiV2O4 near the boundary of the pressure induced insulating phase. It is noted that the pressure dependence of T1 for LiV2O4 is opposite to that of typical Ce HF compounds, such as CeCu5.9Au0.1 and CeCu2Si2. At the highest pressure of 4.74 GPa, we found that 1/T1 obeys a power law dependence of T2/3 over the wide T range between 60 mK and 10 K. The spin dynamics under high pressure will be discussed.

Published
2004

207. Effects of Neighboring Tracks in an SPT Head/Double-Layer Medium System

Author

K. Shinagawa, M. Ohtake, H. Takeda, Norio Takahashi, A. Matsuo, and K. Fujiwara

Subjects
Physics, business.industry, Track (disk drive), Demagnetizing field, Edge (geometry), Condensed Matter Physics, Finite element method, Electronic, Optical and Magnetic Materials, Optics, Nuclear magnetic resonance, Perpendicular, Head (vessel), Electrical and Electronic Engineering, Poisson's equation, Relative permeability, business, Instrumentation
Abstract

The perpendicular stray field from the tracks neighboring the center track in a perpendicular SPT head/double-layer medium system was investigated using a 3D read/write simulation system in witch the Poisson equation for the head/medium system is solved by the edge-based finite element method. The main results were as follows: (1) the stray field in the double-layer medium is about two times greater than that in the single layer, (2) the stray field under the main pole or the auxiliary pole in an SPT head as a function of the relative permeability μr of a soft underlayer (SUL) initially increases, reaches a maximum at around μr = 10, and decreases monotonically with increasing μr, (3) the stray field for SUL μr greater than 10 is increased by cutting tha SUL into short tracks, and (4) the stray field is almost independent of the thickness of the SUL when μr is greater than 100.

Published
2004

208. Design and high-speed test of (4 × 8)-bit single-flux-quantum shift register files

Author

Akira Fujimaki, Y. Yamashiro, K. Fujiwara, Shinichi Yorozu, Hirotaka Terai, and Nobuyuki Yoshikawa

Subjects
business.industry, Computer science, Clock rate, Metals and Alloys, 8-bit, Process (computing), Condensed Matter Physics, Materials Chemistry, Ceramics and Composites, Electrical and Electronic Engineering, business, Throughput (business), Computer hardware, Access time, Random access, Shift register, DC bias
Abstract

In the realization of large-scale single-flux-quantum (SFQ) digital systems, one of the most serious problems is the lack of high-density and high-speed memories. We have been developing random access memories using SFQ shift registers, which are one candidate to solve the memory problem in the SFQ digital system because of their high throughput and short access time. In this paper we have designed and tested a (4 × 8)-bit SFQ shift register file as a demonstration of the SFQ shift register memory system. Its target clock frequency is 20 GHz assuming an NEC 2.5 kA cm−2 Nb standard process. In the test, we have confirmed that 8-bit dual-rail data can be loaded to appropriate shift registers specified by 2-bit address data. We have also verified that the loaded data are read out and written back to the same shift register at high speed. A tested dc bias margin at 20 GHz is ±5%.

Published
2003

209. Implementation and low speed test of ultra-fast interface circuits for Josephson-CMOS hybrid memories

Author

S.R. Whiteley, Yijun Feng, K. Fujiwara, T. Van Duzer, Nobuyuki Yoshikawa, and H. Miyakawa

Subjects
Physics, business.industry, Interface (computing), Process (computing), Electrical engineering, Energy Engineering and Power Technology, Hardware_PERFORMANCEANDRELIABILITY, Propagation delay, Condensed Matter Physics, Signal, Electronic, Optical and Magnetic Materials, CMOS, Stack (abstract data type), Hardware_GENERAL, Hardware_INTEGRATEDCIRCUITS, Electrical and Electronic Engineering, business, Hardware_LOGICDESIGN, Electronic circuit, Voltage
Abstract

We have been developing Josephson-CMOS hybrid memories where high-density CMOS devices are used as storage cells. One of the key components in the system is the interface circuit, which amplifies the signal from the SFQ circuits into voltage level processible in the CMOS circuits at high-speed. In this paper, we have implemented the ultra-fast interface circuit, which is composed of a Josephson driver and a Josephson-CMOS hybrid amplifier. The propagation delay of the ultra-fast interface circuit is estimated to be about 60 ps assuming a 2.5 kA/cm 2 Nb process and a 0.6 μm CMOS process. A low speed test results of the interface circuit shows that it amplifies the input voltage of 80 μV to 0.9 V. We have also investigated their propagation delay and output voltage swing assuming the spread of the critical current in the Josephson stack.

Published
2003

210. CCD-based vertex detector for JLC

Author

N. Tamura, Kazuo Abe, Y. Katou, Yasuhiro Sugimoto, Go Iwai, K. Nakayoshi, H. Takayama, Akiya Miyamoto, T. Aso, and K. Fujiwara

Subjects
Physics, Nuclear and High Energy Physics, Pixel, Physics::Instrumentation and Detectors, business.industry, Detector, Radiation, law.invention, Optics, Semiconductor, law, Physics::Accelerator Physics, Charge-coupled device, Vertex detector, Collider, business, Instrumentation, Image resolution
Abstract

The Charge Coupled Device (CCD) based vertex detector is being studied for the Joint Linear Collider (JLC) project. One of the main goals is the operation of CCDs at near-room temperature in order to reduce the amount of materials between the interaction points and outer detectors, and minimize the thermal distortion of CCD wafers. In this paper, we describe some of the aspects about the operation at near-room temperature with the results of radiation immunity and spatial resolution studies for the JLC project.

Published
2003

211. Biological control of phytophagous ladybird beetles Epilachna vigintioctopunctata (Col., Coccinellidae) by chitinolytic phylloplane bacteria Alcaligenes paradoxus entrapped in alginate beads

Author

Teruo Nonomura, Yasuyuki Sakuratani, Shigeyuki Mayama, A. Miwa, K. Fujiwara, Yukio Tosa, Yoshinori Matsuda, Y. Otsu, H. Shimizu, H. Ueki, Hideyoshi Toyoda, Mori Hirofumi, and T. Nakajima

Subjects
education.field_of_study, Calcium alginate, media_common.quotation_subject, fungi, Population, Biological pest control, food and beverages, Insect, Biology, biology.organism_classification, Microbiology, chemistry.chemical_compound, chemistry, Insect Science, Chitinase, biology.protein, Coccinellidae, Phyllosphere, education, Agronomy and Crop Science, Bacteria, media_common
Abstract

The chitinase secreting strain KPM-012A of Alcaligenes paradoxus was isolated from tomato leaves and vitally entrapped in sodium alginate gel beads to provide a new method for biocontrol of phytophagous ladybird beetles Epilachna vigintioctopunctata. First, the peritrophic membrane was dissected from the adult ladybird beetles that ingested the suspension of KPM-012A after starvation to observe degradation of the midgut surface by the bacteria under electron microscopy. The peritrophic membrane around the bacteria was degraded, suggesting the release of chitinase from the ingested bacteria. Large amounts of chitinase were successfully released from KPM-012A-entrapped calcium alginate beads. This chitinase release from the microbial beads was sustained for 1 week and was sufficient to digest the peritrophic membrane. Daily supply of tomato leaves treated with the microbial beads caused considerable suppression of leaf feeding and oviposition by the adult ladybird beetles, indicating that this method is effective for decreasing population of insect pests in the subsequent generation. Thus, the present study provided an experimental basis for the biocontrol measures of herbivorous insect pests by the chitinolytic bacteria entrapped in alginate beads.

Published
2003

212. Design and component test of SFQ shift register memories

Author

H. Hoshina, Y. Yamashiro, K. Fujiwara, and Nobuyuki Yoshikawa

Subjects
business.industry, Network packet, Computer science, Clock rate, Integrated circuit design, Propagation delay, Condensed Matter Physics, Electronic, Optical and Magnetic Materials, law.invention, Microprocessor, law, Rapid single flux quantum, Electrical and Electronic Engineering, business, Computer hardware, Access time, Shift register
Abstract

The lack of a high-density and high-speed memory is a serious impediment for realization of large-scale RSFQ digital systems. A shift resister memory, which has high throughput and simple circuit structure, is one candidate to overcome this drawback. We show a design framework of the shift register memory, which is usable for the high-speed register files and the main memories of the RSFQ microprocessor. The proposed system consists of an array of shift registers and a packet decoder that switches a high-speed serial data stream into the specified shift register. The target clock frequency is 16 GHz assuming 2.5 kA/cm/sup 2/ Nb standard process. We have estimated the propagation delay and the circuit area of the data-driven self-timed (DDST) packet decoder. Based on this estimation, we have also evaluated the access time and the area of the memory system. Several key components, including the one-to-two packet switch and the one-to-four DDST packet decoder, were implemented and their correct operations were confirmed.

Published
2003

213. Cell based design methodology for BDD SFQ logic circuits: A high speed test and feasibility for large scale circuit applications

Author

K. Fujiwara, H. Hoshina, F. Matsuzaki, K. Yoda, Nobuyuki Yoshikawa, N. Nakajima, and K. Kawasaki

Subjects
Standard cell, Computer science, Circuit design, Integrated circuit design, Condensed Matter Physics, binary decision diagram, RSFQ, cell library, Electronic, Optical and Magnetic Materials, Logic synthesis, Rapid single flux quantum, Logic gate, Electronic engineering, Clock generator, cell base design, Electrical and Electronic Engineering, superconducting circuits, Hardware_LOGICDESIGN, Electronic circuit
Abstract

We have proposed a cell-based design methodology for SFQ logic. circuits based on a binary decision diagram (BDD) and implemented a BDD SFQ standard cell library using a Hypres Nb process. In this design methodology, any logic function can be implemented by connecting binary switches. Since the circuits are dual rail logic and don't need a global clock, difficulty in the timing design is reduced considerably. In our cell-based design approach, the cell library is composed of only five kinds of basic cells, whose circuit parameters are optimized so as to remove the inter-cell interaction. In the layout level, the cells have the identical size so that circuits can be implemented by simply embedding the basic cells. In this study we have performed an on-chip high-speed test of the BDD SFQ logic circuits. The test system consists of two four-bit data-driven self-timed (DDST) shift registers with a ladder type clock generator. We have confirmed 12 GHz operations of the BDD SFQ logic circuit. We have also examined circuit size dependence of the DC bias margin of large BDD SFQ circuits.

Published
2003

214. Dynamics of In atom during InAs/GaAs(0 0 1) growth process

Author

K. Fujiwara, Tsuyoshi Aisaka, and Akira Ishii

Subjects
Condensed matter physics, General Physics and Astronomy, chemistry.chemical_element, Heterojunction, Surfaces and Interfaces, General Chemistry, Substrate (electronics), Condensed Matter Physics, Epitaxy, Crystallographic defect, Molecular physics, Surfaces, Coatings and Films, chemistry, Quantum dot, Atom, Indium, Molecular beam epitaxy
Abstract

We calculated the dynamics of indium atom during the molecular beam epitaxy growth of InAs on GaAs(0 0 1) using the first-principle calculation. The result shows us that indium atom is very mobile. The hopping barrier energy of In is almost same as that of As on GaAs(0 0 1) surface. The substitution of In toward the substrate GaAs(0 0 1) also occurred, because the energy difference between the In atom on the second topmost layer and the substitution of it with the Ga atom of the fourth layer is very small. Thus, we should be careful to analyze experiments because indium atom is very active and mobile on GaAs(0 0 1) surface.

Published
2003

215. Design and component test of a tiny processor based on the SFQ technology

Author

K. Fujiwara, F. Matsuzaki, N. Nakajima, K. Yoda, K. Kawasaki, and Nobuyuki Yoshikawa

Subjects
Instruction register, business.industry, Computer science, Clock rate, Register file, Digital clock manager, Condensed Matter Physics, Clock skew, binary decision diagram, RSFQ, Program counter, Electronic, Optical and Magnetic Materials, SFQ processor, Clock domain crossing, bit-serial architecture, Clock generator, Hardware_ARITHMETICANDLOGICSTRUCTURES, Electrical and Electronic Engineering, business, Computer hardware
Abstract

An eight-bit SFQ processor has been designed and some key components have been tested to confirm feasibility of the large-scale SFQ digital circuit. The designed processor is composed of a one-bit ALU, two eight-bit registers with local clock generators, an instruction register, a five-bit program counter, a state controller, and a 32-byte register file. A bit-serial architecture and a distributed local clock architecture, where each register has its own local clock generator, have been employed in order to increase the local clock frequency. The target clock frequency is 16 GHz and 10 GHz for the NEC 2.5 kA/cm/sup 2/ and Hypres 1 kA/cm/sup 2/ Nb processes. On the circuit design level, we have used a data-driven self-timed architecture and a binary decision diagram, which reduce the timing design difficulty in high frequency operation. The processor, which contains 7,300 Josephson junctions, has been designed by using a cell-based design methodology with the assistance of a top-down CAD environment. We have successfully tested some important circuit blocks, including a one-bit ALU, eight-bit registers, and a demultiplexer for register files.

Published
2003

216. Josephson-CMOS hybrid memory with ultra-high-speed interface circuit

Author

H. Miyakawa, K. Fujiwara, S.R. Whiteley, Yijun Feng, Xiaofan Meng, T. Van Duzer, and Nobuyuki Yoshikawa

Subjects
Josephson effect, Physics, Wire bonding, business.industry, Preamplifier, Amplifier, Hardware_PERFORMANCEANDRELIABILITY, Condensed Matter Physics, Chip, Line (electrical engineering), Electronic, Optical and Magnetic Materials, CMOS, Hardware_INTEGRATEDCIRCUITS, Optoelectronics, Electrical and Electronic Engineering, business, Hardware_LOGICDESIGN, Electronic circuit
Abstract

In this paper we report our recent progress in realizing a Josephson-CMOS hybrid random-access memory. We have established a 4 K CMOS device model based on low-temperature experimental data on discrete MOS devices. We implemented an ultra-high-speed interface circuit to amplify millivolt-level Josephson input signals to volt-level signals for CMOS circuits. The interface circuit includes a Josephson series-array preamplifier and an ultra-fast hybrid Josephson-CMOS amplifier. Simulation and optimization of the interface circuit have predicted a delay of less than 60 ps. We have designed and fabricated the interface circuit using the 0.25 /spl mu/m National Semiconductor Corporation (NSC) process for the CMOS chip, and the UC Berkeley 6.5 kA/cm/sup 2/ Nb process for the Josephson junction (JJ) chip. The functionality of the interface circuit has been tested and proved by wire-bonding the CMOS chip to the JJ chip. We also demonstrate the design and fabrication of a model 64-kbit Josephson-CMOS hybrid memory; this circuit includes the ultra-high-speed interface, address buffers, word line decoders, 3 T DRAM-type cells, and Josephson sensing circuits; these are fabricated using the 0.25 /spl mu/m NSC CMOS process and the UC Berkeley Nb process. Subnanosecond access time is predicted by a conservative simulation that used a room-temperature model for the CMOS. We plan a stacked-chip structure using very short wire bonding with which we will be able to measure subnanosecond access times.

Published
2003

217. The fence and picket structure of the plasma membrane of live cells as revealed by single molecule techniques (Review)

Author

Akihiro Kusumi, Takahiro K. Fujiwara, Ryota Iino, Ken Ritchie, and K. Murase

Subjects
biology, Membrane transport protein, Chemistry, Cell Membrane, Membrane structure, Membrane Proteins, Biological membrane, Cell Biology, Plasma, Membrane transport, Models, Biological, Transmembrane protein, Diffusion, Models, Structural, Membrane Lipids, Crystallography, Membrane, biology.protein, Biophysics, Animals, Humans, Molecule, Molecular Biology
Abstract

Models of the organization of the plasma membrane of live cells as discovered through diffusion measurements of integral membrane molecules (transmembrane and GPI-anchored proteins, and lipid) at the single molecule level are discussed. Diffusion of transmembrane protein and, indeed, even lipid is anomalous in that the molecules tend to diffuse freely in limited size compartments, with infrequent intercompartment transitions. This average residency time in a compartment is dependent on the diffusing species and on its state of oligomerization, becoming completely confined to a single compartment upon sufficient oligomerization. This will be of great importance in determining cellular mechanisms for controlling the random diffusive motion of membrane molecules and in understanding signalling processes.

Published
2003

218. Effect of peripheral lipopolysaccharide injection on dopamine content in murine anterior olfactory nucleus

Author

K. Fujiwara, Ikuko Nagatsu, Akira Ota, Keiji Mori, Yoko S. Kaneko, and Akira Nakashima

Subjects
Lipopolysaccharides, Male, Olfactory system, medicine.medical_specialty, Time Factors, Tyrosine 3-Monooxygenase, Dopamine, Molecular Sequence Data, Polymerase Chain Reaction, Receptors, Dopamine, Mice, Norepinephrine, chemistry.chemical_compound, Internal medicine, medicine, Animals, RNA, Messenger, GTP Cyclohydrolase, Neurotransmitter, Chromatography, High Pressure Liquid, Biological Psychiatry, Mice, Inbred C3H, Base Sequence, Chemistry, Olfactory Pathways, Olfactory Bulb, Receptors, Adrenergic, Anterior olfactory nucleus, Olfactory bulb, Endotoxins, Psychiatry and Mental health, Endocrinology, Neurology, Catecholamine, Locus coeruleus, Neurology (clinical), Injections, Intraperitoneal, medicine.drug
Abstract

Norepinephrine turnover rate in the murine locus coeruleus (LC) is known to be enhanced by the intraperitoneal (i.p.) injection of lipopolysaccharide (LPS). Approximately 40% of LC neurons are also known to project to the olfactory bulb (OB) and the anterior olfactory nucleus (AON). Therefore, we investigated whether an i.p. injection of 500 microg LPS could modulate the catecholamine biosynthesis in these sites in 8-week-old C3H/HeN male mice. Unexpectedly, the content of norepinephrine was not elevated in both sites during 6-h-observation after LPS injection. The contents of dopamine and its metabolites in the AON were highly increased at 4 h after LPS injection, whereas those in the OB were not elevated during 6-h-observation. Although the AON has been considered not to belong to the dopaminergic neuron system, our report is the first to show an elevated dopamine content in the AON under a stressful condition such as endotoxemia.

Published
2003

219. Relation between colour vision loss and occupational styrene exposure level

Author

Yoko Katakura, Setsuko Kasai, Toshihiro Satoh, Toshio Kawai, Eri Tsukishima, K Fujiwara, Fumihiro Sata, Yingyan Gong, and Reiko Kishi

Subjects
medicine.medical_specialty, Phenylglyoxylic acid, Creatinine, Chemistry, Colour Vision, Public Health, Environmental and Occupational Health, Cumulative Exposure, Surgery, Styrene, chemistry.chemical_compound, Animal science, Exposure level, Toxicity, medicine, Vision test
Abstract

Aims: To investigate the relation between colour vision loss and the exposure level of styrene. Exposure level included the current exposure concentration, past cumulative exposure, and the maximum exposure level in the past. Methods: Colour vision was examined by the Lanthony desaturated panel D-15 test for 76 subjects exposed to styrene in a fibreglass reinforced plastics boat plant (as an exposed group) and 102 non-exposed subjects (as a control group). The current exposure level was expressed by the concentration of atmospheric styrene and end shift urinary mandelic acid (MA) and phenylglyoxylic acid (PGA) levels. The individual cumulative exposure index (CEI) was calculated, based on the exposure frequency and urinary MA concentrations measured for the past eight years. Results: The Colour Confusion Index (CCI) of the exposed group showed a significant difference from the age matched controls. However, only a slight significant relation was found between CCI and the concentration of urinary MA plus PGA. In this study, the exposed group was further divided into two subgroups (as sub-MA+PGA groups) by the median of urinary MA plus PGA of each subject. The dividing line between the subgroups was 0.24 g/g creatinine, which was equivalent to an atmospheric concentration of styrene of about 10 ppm. The CCI values of both the sub-MA+PGA groups were significantly higher than that of the control group. The relation between CCI value and the maximum exposure concentration in the past eight years was examined. It was found that the CCI values of the group with the maximum exposure concentration of styrene over 50 ppm were significantly higher than that of the other groups. Conclusions: Exposure to styrene would impair colour vision even if the exposure concentration was lower than 10 ppm. Furthermore, if the maximum concentration of styrene exposure transiently exceeded 50 ppm in the past, the styrene related damage might remain. Thus, the safe limit of exposure to styrene and the relation between exposure to styrene and the degree of damage to ocular structure, retina, optic nerve, and brain need to be re-examined.

Published
2002

220. Design and component test of RSFQ packet decoders for shift register memories

Author

K. Fujiwara, J. Koshiyama, H. Hoshina, and Nobuyuki Yoshikawa

Subjects
Serial communication, Computer science, Network packet, business.industry, Clock rate, Register file, Energy Engineering and Power Technology, Condensed Matter Physics, Electronic, Optical and Magnetic Materials, law.invention, Microprocessor, law, Rapid single flux quantum, Electrical and Electronic Engineering, business, Computer hardware, Shift register, DC bias
Abstract

We show a design framework of shift register memories, which is usable for the high-speed register file of the RSFQ microprocessor. The proposed shift register memory consists of an array of shift registers and a packet decoder that switches a high-speed serial data stream into the destined shift register. A target clock frequency is 20 GHz assuming 1 kA/cm 2 Nb standard process. A concept of data-drive self-timing (DDST) is employed to reduce the timing difficulty in the synchronized RSFQ circuit. In this paper we also show the design details of the DDST RSFQ packet decoder, which is composed of one-to-two DDST RSFQ packet switches. A D3 flip-flop, a main building element of the one-to-two DDST RSFQ packet switch, is newly developed as a non-destructive memory cell. The low speed test shows that the DC bias margin of the D3 flip-flop is ±32%. We have also estimated the latency and the circuit area of the DDST packet decoder.

Published
2002

221. Strain-rate and temperature effects on the deformation of polypropylene and its simulation under monotonic compression and bending

Author

T. Hiroe, K. Fujiwara, F. Ohashi, and H. Matsuo

Subjects
Materials science, Polymers and Plastics, Viscoplasticity, Numerical analysis, Monotonic function, General Chemistry, Bending, Strain rate, symbols.namesake, Creep, Deflection (engineering), Materials Chemistry, symbols, Gaussian quadrature, Composite material
Abstract

Monotonic compressive loading and bending tests are conducted for solid polypropylene (PP) under constant or time-varying strain-rates and temperatures of 10, 25, 40°C. The observed compressive stress-strain responses under constant conditions have revealed that the inelastic deformation behavior is remarkably dependent on loading rates and temperatures of normal use. The examination of such inelastic behavior has indicated that the strain-rate effects correspond with the temperature effects based on the concept of time-temperature equivalence. The viscoplastic constitutive theory based on overstress (VBO) has successfully reproduced the experimental responses with stress-jumping phenomena using the equivalent time. Four-point bending tests are performed under monotonic loading and holding for PP beams at three different temperatures. The observed deformation behavior has shown that the Bernoulli-Euler hypothesis is valid. The VBO model and beam bending theory has generated the basic equations for PP beams, showing an analogy with the uniaxial one. In the numerical analysis, the equations are transformed into nonlinear ordinary differential equations with use of Gaussian quadrature for the spatial integrals. The comparison of numerical and experimental results has suggested some modifications for actually loaded moment taking the effect of deflection and friction into consideration. Finally, the numerical calculation has simulated the experimental time-histories of curvatures fairly well.

Published
2002

222. Development and performance evaluation of Time-over-Threshold based digital PET (TODPET2) scanner using SiPM/Ce:GAGG-arrays for non-invasive measurement of blood RI concentrations

Author

Hiroyuki Takahashi, T. Endo, K. Fujiwara, Miwako Takahashi, Hiroki Sato, S. Ito, Yoshiyuki Usuki, Akira Yoshikawa, Kei Kamada, A. Lipovec, Masao Yoshino, Toshimitsu Momose, Yasuhiro Shoji, Kenji Shimazoe, and Kousuke Tsutsumi

Subjects
Physics, medicine.medical_specialty, Scanner, Pixel, 010308 nuclear & particles physics, business.industry, Detector, Scintillator, 01 natural sciences, 030218 nuclear medicine & medical imaging, 03 medical and health sciences, Full width at half maximum, 0302 clinical medicine, Silicon photomultiplier, Optics, 0103 physical sciences, medicine, Medical physics, Tomography, business, Instrumentation, Image resolution, Mathematical Physics
Abstract

We developed Time-over-Threshold based digital PET (TODPET2) tomograph using silicon photomultipliers (SiPM) arrays coupled with pixelized Ce:Gd3(Ga, Al)5O12 (Ce:GAGG) scintillators dedicated for non-invasive measurement of blood RI concentrations. The detector consists of 1.57 × 1.57 mm2 SiPM chips and 1.6 × 1.6 × 15 mm3 Ce:GAGG scintillators arranged on a 12 × 12 channel, both working as individual readout systems. After the development of the detector, we fabricated the PET gantry composed of 8 pieces of SiPM/Ce:GAGG detector array which signals were sent to the current-comparing type time-over-threshold (TOT) ASIC for individual readout of pixels. The PET scanner which we developed has 25 mm axial field-of-view (FOV) and 60 mm transaxial FOV. The spatial resolution reconstructed with maximum likelihood estimation method (MLEM) is 0.98 mm (FWHM) at the center of FOV. The sensitivity of the system is measured to be 1.31% using 22Na point source. Finally, timing response to changes in RI concentration was also measured using 5 mm diameter syringe injected with several concentrations of 18FDG.

Published
2017

223. Ar+ ion beam machining of the carbon thin layer deposited on the Zerodur® substrate for EUVL projection optics

Author

S. A. Pahlovy, K. Fujiwara, and Iwao Miyamoto

Subjects
Figuring, Materials science, Ion beam, business.industry, Extreme ultraviolet lithography, Zerodur, Substrate (electronics), Condensed Matter Physics, Atomic and Molecular Physics, and Optics, Surfaces, Coatings and Films, Electronic, Optical and Magnetic Materials, Optics, Surface roughness, Electrical and Electronic Engineering, business, Lithography, Layer (electronics)
Abstract

In order to overcome roughening and charging of the Zerodur(R) substrate for extreme ultra violet lithography (EUVL) optics during 0.5-10keV Ar^+ ion beam machining, we had already proposed a method in which a thin Si layer was deposited on the Zerodur(R) substrate and figuring the deposited Si layer. In this experiment, in order to get smoother surface than Si layer, carbon which has smaller atomic size than that of Si was deposited on the Zerodur(R) substrate. Then, we investigated ion energy and machined depth dependence of the surface roughness of the carbon layer machined by Ar^+ ion beam in the range of 0.3-3keV and obtained the following results; surface roughness of the carbon layer machined by 1.0keV Ar^+ ion beam to the machined depth of 50nm becomes 0.08nm rms and this value is smaller than that (0.12nm rms) of Si. Therefore, the proposed processing method can be applicable for the figuring of substrates for EUVL projection optics.

Published
2011

224. Measurement ofKS0andK*0inp+p,d+Au, and Cu + Cu collisions atsNN=200 GeV

Author

P. Sett, Jen-Chieh Peng, J. G. Rubin, Martin Purschke, C. A. Aidala, C. Baumann, Y. Ikeda, D. Reynolds, S. Dairaku, M. Mitrovski, Takafumi Niida, Inkyu Park, J. G. Boissevain, M. S. Daugherity, C. P. Singh, Xiong Wang, C. Silvestre, Serpil Yalcin, D. Kotchetkov, Pawan Kumar Netrakanti, Z. Conesa del Valle, M. K. Dayananda, Masashi Kaneta, B. M. Johnson, O. Zaudtke, Dong Jo Kim, A. Morreale, Prakhar Garg, Z. Fraenkel, B. Bannier, V. Khachatryan, R. Akimoto, M. Virius, E. T. Atomssa, R. J. Petti, A. Isupov, C. Suire, Aaron Angerami, R. A. Soltz, R. K. Choudhury, C. Pinkenburg, Marisilvia Donadelli, S. Campbell, J. D. Orjuela Koop, G. S. Kyle, A. Veicht, K. Dehmelt, C. H. Chen, J. Sziklai, G. Roche, James Alexander, C. L. Woody, A. Berdnikov, V. Bumazhnov, M. P. Comets, D. Black, Y. J. Mao, S. Kametani, W. A. Zajc, L. Xue, V. Baublis, A. Denisov, Yuki Watanabe, M. Wysocki, M. Vargyas, A. Manion, Brian Cole, J. H. Kang, T. L. Thomas, Sung Keun Park, M. Grosse Perdekamp, F. Giordano, M. E. Connors, V. Cianciolo, B. Meredith, B. Azmoun, Ryugo S. Hayano, Y. Riabov, J. S. Haggerty, A. Caringi, A. Romana, A. Král, Kenta Shigaki, M. J. Kweon, I. Ravinovich, R. Averbeck, Byung-Sik Hong, M. Nguyen, A. S. Nyanin, Rachid Nouicer, Min Soo Kim, A. N. Zelenski, R. Tanabe, M. Proissl, V. S. Pantuev, Sergey Fokin, Petr Gallus, Y. Nagata, M. Gonin, N. N. Ajitanand, A. Bazilevsky, Atsushi Takahara, A. J. Miller, T. Horaguchi, Philippe Rosnet, Y. S. Lai, M. Rosati, R. S. Towell, Prashant Shukla, S. F. Pate, T. Ichihara, Osamu Jinnouchi, Matthew G. Reuter, Takahiro Fusayasu, M. Oka, P. Kline, K. S. Lee, Alexander Milov, I. Nakagawa, Young-Ki Kim, T. Engelmore, N. Novitzky, G. D. N. Perera, Takahiro Nakamura, A. Sukhanov, K. Kurita, H. Pereira, Y. Morino, Gary Grim, K. V. Dharmawardane, K. A. Drees, J. L. Charvet, Alexandre Lebedev, D. M. Lee, Maya Hachiya Shimomura, R. S. Hollis, Y. I. Makdisi, P. Liebing, I. V. Sourikova, O. Drapier, Frank Ellinghaus, E. R. Kinney, D. McGlinchey, Susumu Oda, C. O. Kim, M. Bai, I. Garishvili, Akio Kiyomichi, F. Wei, J. Gosset, H. Iinuma, A. P.T. Palounek, A. A. Vinogradov, Ke. Nakamura, M. Beaumier, K. S. Joo, D. P. Morrison, H. Al-Bataineh, J. A. Key, S. P. Sorensen, S. K. Park, Dylan Walker, A. Durum, J. Klatsky, O. Chvala, X. He, O. O. Omiwade, J. Hamblen, T. E. Miller, Alexander Malakhov, K. Kihara, V. E. Semenov, J. Zimányi, Tatsuya Chujo, Y. Onuki, K. Yamaura, S. Yokkaichi, J. G. Lajoie, H. A. Gustafsson, A. Hadj Henni, M. Alfred, T. Hachiya, M. Ouchida, N. Means, J. Asai, S. Whitaker, Shingo Sakai, Inseok Yoon, Zhiying You, R. Bennett, M. Kawashima, N. Kurihara, J. Bryslawskyj, Jennifer E. Perry, Jiangyong Jia, Y. Goto, D. Kleinjan, D. Ivanishchev, T. Jones, I. Tserruya, Peter Christiansen, D. Winter, S. Afanasiev, A. Ster, N. Feege, Y. Aramaki, V. Peresedov, Jan Rak, R. Lacey, C. Zhang, M. Jezghani, Yu. Efremenko, S. Esumi, P. Ružička, R. Granier de Cassagnac, D. Silvermyr, J. Koster, R. Ichimiya, A. Kravitz, A. Adare, A. Enokizono, M. Finger, Hiroaki Ohnishi, Jongmin Lee, D. Yu Peressounko, Viktor Riabov, V. Papavassiliou, Sébastien Gadrat, J. Newby, Beomkyu Kim, Wei Xie, T. Sumita, A. V. Kazantsev, C. Y. Chi, T. Murakami, K. Okada, K. Das, Hongfang Liu, D. E. Fields, S. Batsouli, H. Masui, A. K. Dubey, V. Singh, Y. Fukao, A. Shevel, Rushan Han, B. Komkov, E. P. Hartouni, Herve Borel, D. Lynch, M. J. Tannenbaum, O. Dietzsch, L. S. Zolin, Robert F. Hobbs, W. J. Park, P. Tarján, H. En'yo, M. J. Leitch, B. V. Jacak, P. Chung, A. A. Bickley, A. Mwai, B. Love, L. Ding, Y. Nakamiya, A. Taketani, H. Valle, M. Kofarago, I. J. Choi, B. Xia, Dipanwita Dutta, Christopher Rosen, M. Kurosawa, T. Koblesky, D. Hornback, N. S. Bandara, S. Butsyk, K. S. Sim, V. Dzhordzhadze, Saskia Mioduszewski, P. D. Barnes, A. Yanovich, M. Naglis, Dennis Perepelitsa, D. Roach, K. M. Kijima, M. McCumber, T. Tabaru, C. Gal, V. L. Rykov, T. Dahms, A. G. Litvinenko, Junji Tojo, Y. Kwon, Vladimir Samsonov, Julia Velkovska, T. Hester, H. Torii, B. K. Schmoll, Debashish Pal, S. Sawada, M. Towell, J. Ying, A. Franz, Tsutomu Mibe, H. Nakagomi, T. Hoshino, Y. Gu, M. A. L. Leite, R. Yang, H. Hiejima, A. Taranenko, Senta Greene, Christine Nattrass, T. Todoroki, N. Riveli, A. Sexton, Xingguo Li, S. Taneja, L. Tomášek, A. T. Basye, B. E. Norman, Susumu Sato, W. S. Emam, A. Datta, Kazushi Miki, S. J. Jeon, B. Fadem, E. O'Brien, P. Mikeš, H. Asano, K. B. Lee, J. Hanks, Tamas Ferenc Csorgo, A. Kozlov, R. Seto, K. Haruna, K. Imai, D. Sharma, M. I. Nagy, D. Watanabe, A. Kim, D. Mukhopadhyay, Brajesh K. Singh, S. Rembeczki, J. Jin, K. Karatsu, E. M. Takagui, S. H. Lim, J. L. Nagle, I. Danchev, S. Takagi, K. N. Barish, A. Glenn, Anne Marie Sickles, B. Schaefer, E. Joo, M. D. Malik, E. Vznuzdaev, Eunja Kim, Masayasu Ishihara, M. Stepanov, L. Patel, John Hill, M. K. Lee, J. S. Bok, T. C. Awes, Ajit Kumar Mohanty, Hari Guragain, G. Baksay, S. Sano, R. Belmont, J. S. Kapustinsky, L. Aphecetche, H. Ozaki, T. A. Shibata, C. L. Silva, J. S. Kang, Toru Sugitate, G. R. Young, S. Tarafdar, J. H. Do, M. L. Brooks, T. Sato, Kyoichiro Ozawa, T. Liška, A. Dion, Jun Kikuchi, L. D. Isenhower, V. Babintsev, Tadaaki Isobe, Johannes Peter Wessels, Eva Haslum, B. Lenzi, J. Chiba, Alice Mignerey, L. D'Orazio, S. Miyasaka, François Fleuret, X. Jiang, P. L. McGaughey, Z. Rowan, M. Mendoza, S. N. White, M. Chiu, Deepa Thomas, A. Meles, V-N. Tram, S. Beckman, Hiroyuki Sako, N. Grau, S. W. Nam, D. Kawall, Takao Sakaguchi, A. Sen, M. Leitgab, D. Isenhower, Minghui Liu, C. Klein-Boesing, A. D. Frawley, M. Heffner, Kenneth Francis Read, H. Themann, Motoi Inaba, V. I. Kochetkov, R. M. Wright, A. Toia, T. Moon, M. Sarsour, Mate Csanad, A. Iordanova, S. Y. Han, L. Mašek, S. Huang, J. Murata, S. H. Aronson, Gerd Joachim Kunde, M. Nihashi, I. Shein, W. Holzmann, David D'Enterria, H. Kanou, Taku Gunji, H. Gong, J. Seele, K. Sedgwick, R. P. Pisani, M. Patel, F. Kajihara, Alberto Baldisseri, Mihael Makek, A. Deshpande, B. Sahlmueller, H. Delagrange, M. N. Wagner, S. Zhou, Y. J. Kim, Y. Watanabe, J. T. Mitchell, S. D. Rolnick, I. Younus, R. Seidl, Vladislav Manko, A. Soldatov, M. Slunečka, S. Hasegawa, A. Kiss, S. Belikov, Z. Yasin, Henner Buesching, Steve Edwards, Marcus Hohlmann, C. Vale, L. A. Linden Levy, B. S. Chang, A. Timilsina, J. Klay, K. O. Eyser, A. K. Purwar, K. Fujiwara, Y. L. Yamaguchi, F. Matathias, Kensuke Homma, E. Richardson, S. Mizuno, P. Constantin, S. Chernichenko, B. Bassalleck, M. Konno, H. W. Van Hecke, S. Bathe, Agneta Oskarsson, Y. Berdnikov, S. Wolin, R. Pak, S. H. Lee, Y. Akiba, C. McKinney, M. Mishra, S. Nagamiya, Vaclav Vrba, Klaus Johannes Reygers, N. Kamihara, Rui Wei, R. Armendariz, N. Apadula, C. Oakley, A. Drees, Y. Imazu, J. Kubart, Steven E. Skutnik, H. Qu, Hideki Hamagaki, K. Aoki, G. David, K. I. Hahn, K. Watanabe, C. A. Ogilvie, K. Shoji, M. Tomášek, T. K. Hemmick, P. W. Stankus, J. M. Durham, Yasuo Miake, P. Montuenga, C. R. Cleven, K. DeBlasio, L. Kochenda, M. Issah, C. Haegemann, Y. Inoue, T. Kempel, R. Pinson, K. Sakashita, D. Kotov, J. Egdemir, D. S. Jumper, Charles Maguire, Jason Kamin, S. P. Stoll, Kiyoshi Tanida, E. Kistenev, P. Lichtenwalner, H. Harada, J. Sun, H. Pei, S. S.E. Rosendahl, G. Bunce, H. J. Kim, A. Churyn, M. B. Deaton, D. Jouan, Y. Tanaka, E. Mannel, Nagahiro Saito, H. J. Moon, F. Staley, L. Baksay, R. Vértesi, J. E. Frantz, Dmitry Blau, E. J. Desmond, M. Togawa, E. Vazquez-Zambrano, J. Park, A. Rakotozafindrabe, M. Kasai, Y. Tsuchimoto, Y. Iwanaga, I. E. Yushmanov, Eun-Hee Kim, Alexei Khanzadeev, E. Stenlund, J. B. Choi, H. Sakata, Dipak Kumar Mishra, D. H. Kim, J. H. Bhom, T. V. Moukhanova, Zvi Hirsh Citron, H. Ge, K. Nakano, W. E. Sondheim, D. Ivanischev, K. Boyle, P. A. Rukoyatkin, and Tae-Yeon Lee

Subjects
Physics, Quark, Nuclear and High Energy Physics, Meson, Nuclear Theory, Strangeness, Phi meson, Baryon, Nuclear physics, Deuterium, High Energy Physics::Experiment, Impact parameter, Nuclear Experiment, Relativistic Heavy Ion Collider
Abstract

The PHENIX experiment at the Relativistic Heavy Ion Collider has performed a systematic study of K-S(0) and K*(0) meson production at midrapidity in p + p, d + Au, and Cu + Cu collisions at root s(NN) = 200 GeV. The K-S(0) and K*(0) mesons are reconstructed via their K-S(0) -> pi(0)(-> gamma gamma) pi(0)(-> gamma gamma) and K*(0) -> K-+/-pi(-/+) decay modes, respectively. The measured transverse-momentum spectra are used to determine the nuclear modification factor of K-S(0) and K*(0) mesons in d + Au and Cu + Cu collisions at different centralities. In the d + Au collisions, the nuclear modification factor of K-S(0) and K*(0) mesons is almost constant as a function of transverse momentum and is consistent with unity, showing that cold-nuclear-matter effects do not play a significant role in the measured kinematic range. In Cu + Cu collisions, within the uncertainties no nuclear modification is registered in peripheral collisions. In central collisions, both mesons show suppression relative to the expectations from the p + p yield scaled by the number of binary nucleon-nucleon collisions in the Cu + Cu system. In the p(T) range 2-5 GeV/c, the strange mesons (K-S(0), K*(0)) similarly to the phi meson with hidden strangeness, showan intermediate suppression between the more suppressed light quark mesons (pi(0)) and the nonsuppressed baryons (p, (p) over bar). At higher transverse momentum, p(T) > 5 GeV/c, production of all particles is similarly suppressed by a factor of approximate to 2.

Published
2014

225. Cross section and transverse single-spin asymmetry ofηmesons inp↑+pcollisions ats=200 GeVat forward rapidity

Author

M. Patel, E. Joo, M. Stepanov, F. Kajihara, C. L. Woody, A. Berdnikov, Hari Guragain, H. Pei, M. Vargyas, Alexei Khanzadeev, S. Tarafdar, E. Stenlund, S. Butsyk, J. B. Choi, A. Caringi, R. S. Towell, M. I. Nagy, H. J. Kim, I. Garishvili, F. Wei, D. Watanabe, V. S. Pantuev, M. Kofarago, Dipak Kumar Mishra, D. H. Kim, Petr Gallus, Prashant Shukla, M. Rosati, S. Zhou, Eva Haslum, M. D. Malik, E. Vznuzdaev, S. F. Pate, J. Hamblen, J. H. Bhom, I. V. Sourikova, S. D. Rolnick, Ke. Nakamura, K. O. Eyser, J. G. Rubin, T. V. Moukhanova, K. Okada, Y. Tanaka, Gary Grim, T. L. Thomas, E. Mannel, K. V. Dharmawardane, H. Al-Bataineh, J. A. Key, Charles Maguire, N. Feege, Y. Onuki, M. Sarsour, Mate Csanad, A. Iordanova, D. Reynolds, T. Sumita, C. Y. Chi, Kiyoshi Tanida, H. Ozaki, E. Kistenev, H. J. Moon, L. Baksay, H. En'yo, P. Lichtenwalner, M. J. Leitch, Dmitry Blau, J. Sun, S. Y. Han, L. Ding, Ryugo S. Hayano, J. Newby, Inkyu Park, Xiong Wang, E. J. Desmond, Ajit Kumar Mohanty, D. Roach, K. M. Kijima, Jiangyong Jia, Y. Goto, T. A. Shibata, C. L. Silva, T. Sato, Y. Riabov, Kenta Shigaki, M. Kurosawa, M. Nguyen, A. Dion, Z. Conesa del Valle, Dong Jo Kim, R. A. Soltz, E. Vazquez-Zambrano, Jan Rak, M. Nihashi, D. Ivanishchev, D. Hornback, V. Papavassiliou, Atsushi Takahara, A. S. Nyanin, Johannes Peter Wessels, K. A. Drees, Maya Hachiya Shimomura, R. S. Hollis, Hongfang Liu, D. E. Fields, R. Lacey, N. S. Bandara, Rachid Nouicer, A. N. Zelenski, M. Proissl, A. Taranenko, P. Sett, B. V. Jacak, Xingguo Li, Vladimir Samsonov, A. V. Kazantsev, D. Isenhower, Y. J. Kwon, M. Kasai, A. Toia, T. Moon, Y. Tsuchimoto, A. Veicht, D. Kleinjan, M. Grosse Perdekamp, M. Wysocki, I. Tserruya, R. Granier de Cassagnac, A. Adare, Christine Nattrass, Kazushi Miki, S. J. Jeon, Y. Iwanaga, R. P. Pisani, T. Todoroki, J. Klatsky, M. Jezghani, Yu. Efremenko, Brajesh K. Singh, V. Singh, M. McCumber, S. P. Sorensen, Beomkyu Kim, F. Giordano, M. E. Connors, Y. I. Makdisi, Aaron Angerami, I. E. Yushmanov, J. Jin, K. Das, E. M. Takagui, J. S. Kang, T. Koblesky, Tamas Ferenc Csorgo, N. Riveli, O. Chvala, W. A. Zajc, Takafumi Niida, L. Xue, S. K. Park, J. L. Nagle, K. B. Lee, P. Montuenga, L. Tomášek, C. Baumann, I. J. Choi, B. Xia, J. Hanks, M. Ouchida, V. Baublis, A. Denisov, Yuki Watanabe, M. K. Dayananda, N. Means, M. S. Daugherity, V. Cianciolo, J. G. Lajoie, Sung Keun Park, Dennis Perepelitsa, C. P. Singh, M. Towell, A. Glenn, B. M. Johnson, M. Alfred, T. Hachiya, S. Whitaker, D. Sharma, N. N. Ajitanand, Y. Fukao, Sergey Fokin, A. Enokizono, Prakhar Garg, B. Bannier, R. J. Petti, Jennifer E. Perry, Marisilvia Donadelli, V. Bumazhnov, D. Black, Eunja Kim, L. Patel, T. Hester, O. Dietzsch, H. Valle, P. Chung, K. Karatsu, S. Campbell, Min Soo Kim, A. Kravitz, G. D. N. Perera, Takahiro Nakamura, R. Tanabe, J. Sziklai, T. Jones, Peter Christiansen, Alexander Milov, I. Nakagawa, T. C. Awes, D. Winter, D. McGlinchey, Dipanwita Dutta, Kyoichiro Ozawa, T. Liška, Brian Cole, Anne Marie Sickles, H. A. Gustafsson, T. Murakami, Young-Ki Kim, T. Engelmore, N. Novitzky, B. Schaefer, D. Yu Peressounko, O. Drapier, Jun Kikuchi, Susumu Oda, C. Gal, Susumu Sato, A. Sen, Julia Velkovska, A. Datta, H. Asano, M. J. Tannenbaum, J. S. Bok, Frank Ellinghaus, M. Gonin, A. Durum, E. R. Kinney, P. Ružička, Rushan Han, N. Grau, A. J. Miller, D. P. Morrison, J. E. Frantz, Catherine Micaela Silvestre, A. Sukhanov, K. Kurita, Minghui Liu, K. Yamaura, Viktor Riabov, M. Leitgab, H. Torii, B. K. Schmoll, H. Pereira, Y. Morino, G. R. Young, Tatsuya Chujo, S. Sawada, M. Heffner, Motoi Inaba, J. Ying, A. Franz, C. O. Kim, A. Kim, S. Rembeczki, Kenneth Francis Read, J. Bryslawskyj, Senta Greene, R. M. Wright, A. T. Basye, B. Fadem, E. O'Brien, T. Kempel, Alice Mignerey, K. S. Sim, L. D'Orazio, S. Miyasaka, P. L. McGaughey, R. Yang, S. Taneja, Takao Sakaguchi, S. Beckman, K. Imai, A. D. Frawley, S. Huang, W. Holzmann, K. Watanabe, K. Shoji, M. Tomášek, T. Horaguchi, M. Beaumier, P. W. Stankus, K. S. Joo, Y. Imazu, H. Qu, Hideki Hamagaki, K. Aoki, G. David, K. I. Hahn, S. Esumi, R. Ichimiya, Martin Purschke, C. A. Aidala, Pawan Kumar Netrakanti, A. Morreale, Z. Fraenkel, V. Khachatryan, R. K. Choudhury, B. Meredith, B. Azmoun, A. Král, M. Oka, P. Kline, K. S. Lee, Y. Ikeda, P. Liebing, R. Akimoto, C. Pinkenburg, K. Dehmelt, G. Roche, S. Yokkaichi, Y. J. Mao, J. H. Kang, J. S. Haggerty, Y. S. Lai, G. S. Kyle, James Alexander, K. Sakashita, R. Averbeck, D. Kotov, S. Hasegawa, Byung-Sik Hong, A. Bazilevsky, A. Kiss, D. S. Jumper, Jason Kamin, Henner Buesching, Steve Edwards, Alexandre Lebedev, S. P. Stoll, S. S.E. Rosendahl, D. M. Lee, G. Bunce, D. Jouan, M. Chiu, C. A. Ogilvie, T. K. Hemmick, J. M. Durham, Yasuo Miake, K. DeBlasio, L. Kochenda, M. Issah, R. Pinson, S. Wolin, R. Pak, N. Apadula, C. Oakley, A. Drees, Marcus Hohlmann, B. Komkov, L. A. Linden Levy, Norio Saito, Tsutomu Mibe, M. A. L. Leite, K. Fujiwara, Jongmin Lee, Y. L. Yamaguchi, S. H. Lim, D. Lynch, R. Belmont, J. S. Kapustinsky, A. Taketani, V. Babintsev, T. Dahms, S. Mizuno, S. Dairaku, X. Jiang, H. W. Van Hecke, A. Meles, S. Bathe, Agneta Oskarsson, Y. Berdnikov, S. H. Lee, Y. Akiba, C. McKinney, S. Nagamiya, M. Virius, E. T. Atomssa, Manabu Togawa, Vaclav Vrba, Klaus Johannes Reygers, Rui Wei, J. C. Peng, J. D. Orjuela Koop, S. W. Nam, C. H. Chen, K. N. Barish, A. Manion, I. Ravinovich, M. Bai, Inseok Yoon, Zhiying You, R. Bennett, M. Kawashima, M. Finger, Y. Nakamiya, S. Sano, John Hill, M. L. Brooks, G. Baksay, B. Love, Toru Sugitate, François Fleuret, A. Sexton, Z. Rowan, M. Mendoza, S. N. White, Deepa Thomas, B. Sahlmueller, S. Yalcin, R. Seto, Zvi Hirsh Citron, H. Ge, K. Nakano, Y. J. Kim, J. T. Mitchell, I. Danchev, X. He, W. E. Sondheim, D. Ivanischev, Y. Aramaki, Robert Vertesi, R. Seidl, K. Boyle, T. Ichihara, J. Koster, H. Masui, Takahiro Fusayasu, A. Mwai, K. Kihara, Vladislav Manko, M. Slunečka, D. Silvermyr, W. J. Park, Christopher Rosen, A. Yanovich, S. Belikov, C. Vale, A. Timilsina, F. Matathias, Kensuke Homma, E. Richardson, B. Bassalleck, M. Konno, A. Deshpande, Y. Watanabe, I. Younus, H. Sako, D. Kawall, H. Themann, J. Murata, Gerd Joachim Kunde, I. Shein, K. Sedgwick, Mihael Makek, M. Naglis, H. Nakagomi, T. Hoshino, Y. Gu, Masayasu Ishihara, J. H. Do, Taku Gunji, H. Gong, and J. Seele

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Meson, media_common.quotation_subject, Eta meson, Asymmetry, Nuclear physics, Transverse plane, Cross section (physics), Pseudorapidity, High Energy Physics::Experiment, Rapidity, Nuclear Experiment, Relativistic Heavy Ion Collider, media_common
Abstract

We present a measurement of the cross section and transverse single-spin asymmetry (AN) for. mesons at large pseudorapidity from root s = 200 GeV p up arrow + p collisions. The measured cross section for 0.5 = 0.061 +/- 0.014. The results are consistent with prior transverse single-spin measurements of forward eta and pi(0) mesons at various energies in overlapping x(F) ranges. Comparison of different particle species can help to determine the origin of the large observed asymmetries in p up arrow + p collisions.

Published
2014

226. System-size dependence of open-heavy-flavor production in nucleus-nucleus collisions atsNN=200GeV

Author

L. Aphecetche, V. S. Pantuev, Mate Csanad, Alexei Khanzadeev, Johannes Peter Wessels, P. Tarján, Y. L. Yamaguchi, E. Stenlund, Eva Haslum, B. Lenzi, B. Komkov, R. Pak, John Hill, H. A. Torii, Toru Sugitate, L. D. Isenhower, N. Kamihara, Saskia Mioduszewski, R. Armendariz, N. Apadula, H. Sakata, A. Drees, J. Kubart, Marisilvia Donadelli, V. Bumazhnov, M. P. Comets, K. Okada, S. F. Pate, Y. J. Mao, S. Kametani, David D'Enterria, M. A. L. Leite, D. McGlinchey, T. Tabaru, S. Afanasiev, A. Ster, H. Al-Bataineh, Maya Hachiya Shimomura, A. V. Kazantsev, N. N. Ajitanand, M. Issah, H. En'yo, M. J. Leitch, François Fleuret, T. Ichihara, T. V. Moukhanova, M. Rosati, M. D. Malik, E. Vznuzdaev, D. Kawall, R. Vértesi, Osamu Jinnouchi, Matthew G. Reuter, Takahiro Fusayasu, Y. I. Makdisi, Alexander Milov, I. Nakagawa, Senta Greene, K. S. Joo, M. N. Wagner, J. Jin, Takahiro Nakamura, K. S. Sim, J. H. Kang, Alexander Malakhov, J. S. Haggerty, V. Papavassiliou, Jason Newby, V. Dzhordzhadze, Sébastien Gadrat, F. Matathias, J. E. Frantz, Robert F. Hobbs, E. M. Takagui, O. Drapier, Frank Ellinghaus, B. E. Norman, E. O'Brien, S. P. Sorensen, A. A. Vinogradov, D. Hornback, D. Silvermyr, Y. Fukao, A. Shevel, V. Babintsev, L. S. Zolin, E. R. Kinney, W. J. Park, L. Tomášek, V. I. Kochetkov, Rushan Han, A. Romana, S. Butsyk, B. Love, Kensuke Homma, P. Mikeš, Dylan Walker, A. Hadj Henni, P. D. Barnes, D. P. Morrison, Junji Tojo, A. Yanovich, S. Campbell, Y. Kwon, Susumu Oda, Vladimir Samsonov, T. Hester, J. Murata, Jiangyong Jia, Y. Goto, Debashish Pal, R. A. Soltz, H. Borel, S. Sawada, C. P. Singh, A. Taranenko, H. Iinuma, B. M. Johnson, E. J. Desmond, A. Durum, Wei Xie, J. Ying, V. E. Semenov, A. Franz, M. B. Deaton, Gerd Joachim Kunde, J. Zimányi, M. Togawa, P. Constantin, Kazushi Miki, S. Chernichenko, J. Park, A. P.T. Palounek, A. Rakotozafindrabe, S. N. White, I. Shein, H. Hiejima, S. Esumi, A. Isupov, C. Suire, Tatsuya Chujo, K. Dehmelt, M. J. Tannenbaum, D. Sharma, Y. Tsuchimoto, Catherine Micaela Silvestre, B. Bassalleck, Jen-Chieh Peng, J. Sziklai, M. Grosse Perdekamp, K. Nakano, Tamas Ferenc Csorgo, A. G. Litvinenko, I. E. Yushmanov, Eun-Hee Kim, Tae-Yeon Lee, J. G. Lajoie, Martin Purschke, T. C. Awes, Kyoichiro Ozawa, T. Liška, M. Konno, W. E. Sondheim, Brian Cole, J. L. Nagle, K. Das, C. A. Aidala, T. Hachiya, M. K. Lee, H. A. Gustafsson, K. Imai, D. Mukhopadhyay, M. Mitrovski, R. S. Towell, V-N. Tram, K. Boyle, P. A. Rukoyatkin, Y. Tanaka, Y. S. Lai, Jun Kikuchi, I. Garishvili, Akio Kiyomichi, Xiong Wang, Z. Yasin, E. P. Hartouni, Henner Buesching, Y. Nakamiya, D. Kotchetkov, Dong Jo Kim, I. J. Choi, A. Kravitz, N. Kurihara, S. Baumgart, C. Zhang, J. Gosset, M. Naglis, M. Wysocki, S. Rembeczki, G. Baksay, Jan Rak, C. L. Silva, O. Dietzsch, Minghui Liu, Motoi Inaba, R. Lacey, A. Kozlov, A. Morreale, D. E. Fields, B. V. Jacak, C. Y. Chi, G. S. Kyle, I. Tserruya, R. Granier de Cassagnac, A. Adare, E. T. Atomssa, M. Heffner, Kenneth Francis Read, Yu. Efremenko, H. Valle, M. Gonin, Viktor Riabov, Nagahiro Saito, Z. Fraenkel, V. Singh, Masayasu Ishihara, J. Chiba, M. McCumber, R. Seto, K. Haruna, Tadaaki Isobe, James Alexander, F. Staley, B. Sahlmueller, A. Deshpande, L. Baksay, B. Azmoun, A. Král, M. J. Kweon, Marcus Hohlmann, S. Yokkaichi, W. A. Zajc, H. Pei, V. Baublis, P. L. McGaughey, J. T. Mitchell, Takao Sakaguchi, D. Winter, R. Averbeck, A. Denisov, V. Cianciolo, Byung-Sik Hong, Julia Velkovska, D. Yu Peressounko, Anne Marie Sickles, K. Kurita, A. Bazilevsky, H. Pereira, M. Chiu, Sergey Fokin, X. He, O. O. Omiwade, J. G. Boissevain, M. Oka, R. Seidl, Philippe Rosnet, Vladislav Manko, A. Dion, Masashi Kaneta, C. Klein-Boesing, Alexandre Lebedev, A. D. Frawley, Y. Watanabe, V. Peresedov, T. Horaguchi, M. Slunečka, D. M. Lee, S. Bathe, C. Pinkenburg, A. Enokizono, I. Younus, S. H. Aronson, G. R. Young, C. A. Ogilvie, T. K. Hemmick, Yasuo Miake, M. Stepanov, G. Roche, L. Kochenda, Hiroaki Ohnishi, Agneta Oskarsson, John Matthew Durham, A. Soldatov, J. Egdemir, S. Batsouli, H. Masui, A. K. Dubey, S. Belikov, W. Holzmann, Jason Kamin, Charles Maguire, S. P. Stoll, Y. Berdnikov, Y. Akiba, A. A. Bickley, S. S.E. Rosendahl, G. Bunce, M. Mishra, A. Churyn, D. Jouan, S. Nagamiya, T. L. Thomas, C. Vale, B. S. Chang, S. Takagi, K. N. Barish, Vaclav Vrba, Klaus Johannes Reygers, J. Klay, Kiyoshi Tanida, E. Kistenev, Xingguo Li, K. O. Eyser, A. K. Purwar, K. Fujiwara, Ryugo S. Hayano, H. Harada, Y. Riabov, Kenta Shigaki, M. Nguyen, M. L. Brooks, H. W. Van Hecke, A. S. Nyanin, Rachid Nouicer, M. Ouchida, J. Asai, D. Lynch, Shingo Sakai, C. R. Cleven, C. Haegemann, Y. Inoue, A. Taketani, C. L. Woody, Dong-Hun Kim, V. L. Rykov, T. Dahms, N. Grau, K. Shoji, O. Zaudtke, P. W. Stankus, M. Virius, I. V. Sourikova, Steven E. Skutnik, A. Glenn, I. Ravinovich, Y. Nagata, H. Qu, R. Bennett, M. Finger, Hideki Hamagaki, K. Aoki, G. David, T. A. Shibata, D. Isenhower, A. Toia, L. Mašek, H. Kanou, Taku Gunji, H. Gong, J. Seele, F. Kajihara, H. Delagrange, S. Zhou, A. Baldisseri, J. L. Charvet, T. E. Miller, P. Chung, Susumu Sato, and W. S. Emam

Subjects
Physics, Nuclear and High Energy Physics, Range (particle radiation), Quantitative Biology::Neurons and Cognition, 010308 nuclear & particles physics, Hadron, chemistry.chemical_element, Electron, 01 natural sciences, 7. Clean energy, Copper, Nuclear physics, medicine.anatomical_structure, chemistry, 0103 physical sciences, medicine, High Energy Physics::Experiment, Charm (quantum number), Atomic physics, Nuclear Experiment, 010306 general physics, Nucleon, Relativistic Heavy Ion Collider, Nucleus
Abstract

The PHENIX Collaboration at the Relativistic Heavy Ion Collider has measured open-heavy-flavor production in Cu + Cu collisions at v root s(NN) = 200 GeV through the measurement of electrons at midrapidity that originate from semileptonic decays of charm and bottom hadrons. In peripheral Cu + Cu collisions an enhanced production of electrons is observed relative to p + p collisions scaled by the number of binary collisions. In the transverse momentum range from 1 to 5 GeV/c the nuclear modification factor is R-AA similar to 1.4. As the system size increases to more central Cu + Cu collisions, the enhancement gradually disappears and turns into a suppression. For p(T) > 3 GeV/c, the suppression reaches R-AA similar to 0.8 in the most central collisions. The p(T) and centrality dependence of R-AA in Cu + Cu collisions agree quantitatively with R-AA in d + Au and Au + Au collisions, if compared at a similar number of participating nucleons .

Published
2014

227. Centrality categorization forRp(d)+Ain high-energy collisions

Author

Hongfang Liu, D. E. Fields, Charles Maguire, B. V. Jacak, L. Tomášek, Soren Pontoppidan Sorensen, Marisilvia Donadelli, M. McCumber, M. Naglis, J. T. Mitchell, X. Jiang, V. Bumazhnov, K. B. Lee, R. Seidl, Vladislav Manko, M. Slunečka, D. Hornback, E. Kistenev, Alexander Milov, I. Nakagawa, R. S. Towell, Kyoichiro Ozawa, T. Liška, I. Garishvili, F. Wei, Henner Buesching, J. Hanks, Steve Edwards, H. A. Gustafsson, S. Belikov, P. Ružička, J. S. Bok, Jun Kikuchi, Viktor Riabov, Masayasu Ishihara, Gary Grim, K. A. Drees, Alexei Khanzadeev, K. V. Dharmawardane, R. Tanabe, T. Engelmore, Youngil Kwon, P. Lichtenwalner, Marcus Hohlmann, Frank Ellinghaus, C. Vale, B. Meredith, A. Taranenko, J. B. Choi, D. Roach, K. M. Kijima, B. Azmoun, F. Fleuret, L. A. Linden Levy, A. Král, Yorito Yamaguchi, E. R. Kinney, Aaron Angerami, Kazushi Miki, Sung Keun Park, W. A. Zajc, F. Matathias, Minghui Liu, Kensuke Homma, E. Richardson, R. Pak, V. Baublis, K. Fujiwara, A. Deshpande, A. Denisov, V. Cianciolo, John Hill, D. P. Morrison, S. Campbell, Sergey Fokin, Xingguo Li, C. Y. Chi, Brajesh K. Singh, N. N. Ajitanand, M. Heffner, Alexander Nyanin, Kenneth Francis Read, B. Bassalleck, H. Pei, Rushan Han, Prashant Shukla, K. Karatsu, Toru Sugitate, M. Konno, M. Oka, S. F. Pate, A. Sukhanov, K. Kurita, Y. Nakamiya, J. H. Bhom, Takahiro Nakamura, Y. Watanabe, C. Baumann, K. S. Lee, Tatsuya Chujo, H. W. Van Hecke, H. Pereira, Y. Morino, C. P. Singh, I. Younus, G. Baksay, D. McGlinchey, Senta Greene, V. S. Pantuev, Vladimir Samsonov, N. Apadula, C. Oakley, B. Komkov, Susumu Oda, B. M. Johnson, T. V. Moukhanova, A. Dion, M. I. Nagy, A. Drees, K. Das, I. Tserruya, Yu. Efremenko, Ke. Nakamura, D. Kawall, O. Dietzsch, Anne Marie Sickles, S. Bathe, Terry C Awes, Dmitry Blau, B. Sahlmueller, A. T. Basye, E. T. Atomssa, P. Liebing, S. Tarafdar, A. Durum, P. L. McGaughey, H. Themann, H. Al-Bataineh, R. J. Petti, Martin Purschke, Johannes Peter Wessels, V. Singh, H. Valle, Y. J. Kim, Y. Akiba, Tsutomu Mibe, E. J. Desmond, B. Fadem, C. A. Aidala, S. Nagamiya, M. A. L. Leite, Catherine Micaela Silvestre, J. Murata, J. Sziklai, M. Ouchida, Tamas Ferenc Csorgo, E. O'Brien, K. Sakashita, Brian Cole, Dipanwita Dutta, Vaclav Vrba, Klaus Johannes Reygers, O. Chvala, K. Yamaura, Rui Wei, S. N. White, E. Vazquez-Zambrano, Gerd Joachim Kunde, Eva Haslum, I. Shein, M. Kurosawa, J. L. Nagle, A. Morreale, Beomkyu Kim, R. A. Soltz, N. Means, Julia Velkovska, Ju Hwan Kang, R. Belmont, J. S. Kapustinsky, Deepa Thomas, J. G. Lajoie, V. Babintsev, O. Drapier, V. Papavassiliou, K. Sedgwick, J. Hamblen, Z. Fraenkel, Zvi Hirsh Citron, M. Rosati, Jason Kamin, I. J. Choi, A. Kravitz, M. Grosse Perdekamp, A. Glenn, K. Nakano, M. Kasai, Y. Tsuchimoto, S. P. Stoll, Y. Iwanaga, G. S. Kyle, James Alexander, R. K. Choudhury, K. S. Joo, Dennis Perepelitsa, M. E. Connors, Eunja Kim, W. E. Sondheim, D. Ivanischev, I. E. Yushmanov, R. Averbeck, Byung-Sik Hong, A. Bazilevsky, S. S.E. Rosendahl, G. Bunce, K. Boyle, G. R. Young, Alexandre Lebedev, M. K. Dayananda, J. Jin, D. M. Lee, T. Ichihara, D. Sharma, R. Ichimiya, D. Jouan, D. Watanabe, M. D. Malik, Jiangyong Jia, Y. Goto, E. M. Takagui, Y. Tanaka, M. Wysocki, Jason Newby, J. E. Frantz, E. Vznuzdaev, T. L. Thomas, David Olle Rickard Silvermyr, K. Tanida, T. Jones, Inkyu Park, M. Chiu, Takahiro Fusayasu, E. Mannel, Nagahiro Saito, K. Okada, Xiong Wang, Z. Conesa del Valle, C. A. Ogilvie, D. Kleinjan, T. Murakami, T. K. Hemmick, H. En'yo, Ryugo S. Hayano, J. M. Durham, Peter Christiansen, D. Winter, D. Yu Peressounko, ShinIchi Esumi, M. J. Leitch, K. S. Sim, L. Kochenda, M. Issah, Y. Riabov, W. J. Park, Jongmin Lee, H. J. Moon, L. Baksay, Christopher Rosen, Kenta Shigaki, M. Nguyen, S. Sawada, A. Yanovich, E. Stenlund, R. Yang, J. Ying, Rachid Nouicer, M. Proissl, A. Franz, S. Taneja, A. Veicht, D. Lynch, K. Imai, C. L. Woody, Y. Onuki, A. Caringi, Jan Rak, R. Lacey, R. Granier de Cassagnac, A. Adare, I. V. Sourikova, A. Taketani, D. S. Jumper, K. N. Barish, S. Nam, T. Dahms, S. Sano, M. L. Brooks, X. He, I. Ravinovich, Y. Aramaki, Robert Vertesi, J. Koster, H. Masui, B. Love, R. Seto, I. Danchev, M. Bai, Zhiying You, R. Bennett, M. Kawashima, Mate Csanad, M. Finger, S. Dairaku, Ajit Kumar Mohanty, T. A. Shibata, C. L. Silva, T. Sato, Y. J. Mao, Y. Miake, M. Virius, Manabu Togawa, H. Qu, J. S. Haggerty, Anders Nils Erik Oskarsson, M. Nihashi, D. J. Kim, Y. S. Lai, Hideki Hamagaki, K. Aoki, J. C. Peng, J. D. Orjuela Koop, G. David, K. I. Hahn, C. H. Chen, S. Yokkaichi, Y. Ikeda, M. Gonin, R. P. Pisani, C. Pinkenburg, D. Isenhower, K. Watanabe, A. Toia, G. Roche, K. Shoji, T. Horaguchi, Y. Fukao, P. W. Stankus, T. Hester, N. Grau, T. Kempel, Motoi Inaba, R. M. Wright, Maya Hachiya Shimomura, Y. I. Makdisi, Taku Gunji, H. Gong, J. Seele, F. Kajihara, M. J. Tannenbaum, H. Torii, A. Kim, S. Rembeczki, S. Butsyk, Alice Mignerey, L. D'Orazio, Takao Sakaguchi, S. Zhou, A. D. Frawley, S. Huang, W. Holzmann, S. D. Rolnick, A. Enokizono, P. Chung, A. Datta, and A. V. Kazantsev

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Nuclear Theory, Monte Carlo method, Parton, Gluon, Hadronization, Nuclear physics, Neutron, Rapidity, Impact parameter, Nuclear Experiment, Relativistic Heavy Ion Collider
Abstract

High-energy proton- and deuteron-nucleus collisions provide an excellent tool for studying a wide array of physics effects, including modifications of parton distribution functions in nuclei, gluon saturation, and color neutralization and hadronization in a nuclear environment, among others. All of these effects are expected to have a significant dependence on the size of the nuclear target and the impact parameter of the collision, also known as the collision centrality. In this article, we detail a method for determining centrality classes in p(d) + A collisions via cuts on the multiplicity at backward rapidity (i.e., the nucleus-going direction) and for determining systematic uncertainties in this procedure. For d + Au collisions at root s(NN) = 200 GeV we find that the connection to geometry is confirmed by measuring the fraction of events in which a neutron from the deuteron does not interact with the nucleus. As an application, we consider the nuclear modification factors Rp(d)+A, for which there is a bias in the measured centrality-dependent yields owing to auto correlations between the process of interest and the backward-rapidity multiplicity. We determine the bias-correction factors within this framework. This method is further tested using the HIJING Monte Carlo generator. We find that for d + Au collisions at root s(NN) = 200 GeV, these bias corrections are small and vary by less than 5% (10%) up to p(T) = 10 (20) GeV/c. In contrast, for p + Pb collisions at v root s(NN) = 5.02 TeV we find that these bias factors are an order of magnitude larger and strongly pT dependent, likely attributable to the larger effect of multiparton interactions.

Published
2014

228. High performance shield room for intermediate frequency magnetic fields

Author

S. Hirosato, Takehiro Tsuruta, and K. Fujiwara

Subjects
Engineering, Electromagnet, Physics::Instrumentation and Detectors, business.industry, Acoustics, Electrical engineering, law.invention, Magnetic field, Magnetic core, Intermediate frequency, law, Shield, Electromagnetic shielding, business, Saturation (magnetic), Leakage (electronics)
Abstract

A high performance shield structure which will prevent the leakage of intermediate frequency magnetic fields from equipment generating strong magnetic fields in this frequency range is desired. In this paper, a shield structure including a joint is considered because practical shield enclosure and shield room have joint to facilitate construction. A conventional shield rooms do not have high shielding performance for intermediate magnetic field. We aim at shielding effectiveness (SE) improvement by installing magnetic materials around the joint used in a conventional shield room. The SE improvement attributable to these magnetic materials is confirmed by 3-D magnetic field analysis and experiment.

Published
2014

229. Local pressure components and interfacial tension at a liquid-solid interface obtained by the perturbative method in the Lennard-Jones system

Author

K. Fujiwara and Masahiko Shibahara

Subjects
Surface tension, Molecular dynamics, Planar, Classical mechanics, Position (vector), Chemistry, Plane (geometry), Component (thermodynamics), Intermolecular force, General Physics and Astronomy, Mechanics, Physical and Theoretical Chemistry, Virial theorem
Abstract

A classical molecular dynamics simulation was conducted for a system composed of fluid molecules between two planar solid surfaces, and whose interactions are described by the 12-6 Lennard-Jones form. This paper presents a general description of the pressure components and interfacial tension at a fluid-solid interface obtained by the perturbative method on the basis of statistical thermodynamics, proposes a method to consider the pressure components tangential to an interface which are affected by interactions with solid atoms, and applies this method to the calculation system. The description of the perturbative method is extended to subsystems, and the local pressure components and interfacial tension at a liquid-solid interface are obtained and examined in one- and two-dimensions. The results are compared with those obtained by two alternative methods: (a) an evaluation of the intermolecular force acting on a plane, and (b) the conventional method based on the virial expression. The accuracy of the numerical results is examined through the comparison of the results obtained by each method. The calculated local pressure components and interfacial tension of the fluid at a liquid-solid interface agreed well with the results of the two alternative methods at each local position in one dimension. In two dimensions, the results showed a characteristic profile of the tangential pressure component which depended on the direction tangential to the liquid-solid interface, which agreed with that obtained by the evaluation of the intermolecular force acting on a plane in the present study. Such good agreement suggests that the perturbative method on the basis of statistical thermodynamics used in this study is valid to obtain the local pressure components and interfacial tension at a liquid-solid interface.

Published
2014

230. Measurement of transverse-single-spin asymmetries for midrapidity and forward-rapidity production of hadrons in polarizedp+pcollisions ats=200and 62.4 GeV

Author

R. S. Towell, I. Garishvili, X. Jiang, S. Bathe, Agneta Oskarsson, Tadaaki Isobe, Y. Fukao, M. Naglis, Y. Berdnikov, T. Hester, Y. Akiba, M. Mishra, Sung Keun Park, T. Ichihara, P. Tarján, I. Tserruya, Takahiro Fusayasu, Aaron Angerami, S. Nagamiya, C. M. Camacho, Alexander Malakhov, Masayasu Ishihara, D. Silvermyr, P. L. McGaughey, Vaclav Vrba, Klaus Johannes Reygers, L. S. Zolin, W. J. Park, N. N. Ajitanand, Christopher Rosen, A. Hadj Henni, Prashant Shukla, Yu. Efremenko, Charles Maguire, P. D. Barnes, A. Yanovich, V. Singh, Rui Wei, S. F. Pate, B. Meredith, Ke. Nakamura, John Hill, M. Chiu, Toru Sugitate, François Fleuret, M. Ouchida, W. A. Zajc, Y. J. Mao, V. Baublis, S. N. White, Deepa Thomas, S. W. Nam, Beomkyu Kim, Wei Xie, D. Kawall, Zvi Hirsh Citron, N. Means, Takahiro Nakamura, A. Denisov, V. Cianciolo, K. Nakano, M. Rosati, Kiyoshi Tanida, J. Asai, H. Al-Bataineh, H. Themann, W. E. Sondheim, Maya Hachiya Shimomura, C. A. Ogilvie, F. Matathias, Kensuke Homma, D. Ivanischev, K. Boyle, P. A. Rukoyatkin, J. Murata, E. Richardson, J. H. Kang, E. Kistenev, D. McGlinchey, Susumu Oda, Y. Tomita, Sergey Fokin, T. K. Hemmick, V-N. Tram, N. Grau, J. S. Haggerty, J. M. Durham, A. Glenn, Yasuo Miake, Y. I. Makdisi, B. Komkov, Senta Greene, K. S. Sim, Gerd Joachim Kunde, I. Shein, Shingo Sakai, P. Constantin, S. Chernichenko, P. Lichtenwalner, V. Dzhordzhadze, A. Durum, V. Papavassiliou, Motoi Inaba, Eunja Kim, A. Kiss, R. M. Wright, Tae-Yeon Lee, Ajit Kumar Mohanty, Henner Buesching, Y. Kwon, Steve Edwards, T. A. Shibata, C. L. Silva, F. Wei, K. A. Drees, Gary Grim, Norio Saito, Tsutomu Mibe, M. A. L. Leite, B. Bassalleck, K. Yamaura, I. Ravinovich, Dmitry Blau, A. A. Vinogradov, A. T. Basye, M. J. Tannenbaum, C. L. Woody, A. Berdnikov, K. Sedgwick, L. Kochenda, M. Issah, R. Yang, K. V. Dharmawardane, S. Afanasiev, M. Konno, Alberto Baldisseri, A. Ster, Mate Csanad, T. Sato, H. Pei, S. Taneja, Martin Purschke, C. A. Aidala, H. Torii, Jiangyong Jia, Y. Goto, Alexander Milov, I. Nakagawa, Minghui Liu, T. Kempel, Dong-Hun Kim, Marcus Hohlmann, Takafumi Niida, M. Nihashi, T. Engelmore, B. Fadem, E. O'Brien, K. Imai, L. A. Linden Levy, A. Deshpande, E. J. Desmond, N. Feege, David D'Enterria, O. Drapier, Frank Ellinghaus, H. Iinuma, M. K. Dayananda, A. Kim, D. Mukhopadhyay, S. Rembeczki, R. Belmont, J. S. Kapustinsky, M. Heffner, E. R. Kinney, D. P. Morrison, Kenneth Francis Read, A. V. Kazantsev, V. S. Pantuev, L. Aphecetche, D. Kleinjan, P. Mikeš, Y. S. Lai, A. Yu. Semenov, A. Dion, J. Gosset, Hongfang Liu, D. E. Fields, J. T. Mitchell, R. Seidl, Vladislav Manko, M. Slunečka, V. Babintsev, G. S. Kyle, K. Karatsu, M. Wysocki, S. Campbell, V. E. Semenov, Anne Marie Sickles, A. Caringi, Y. Watanabe, Alice Mignerey, S. Belikov, L. D'Orazio, K. Watanabe, I. Younus, I. V. Sourikova, T. L. Thomas, L. Tomášek, B. V. Jacak, K. O. Eyser, A. K. Purwar, K. Fujiwara, Y. L. Yamaguchi, R. P. Pisani, Tatsuya Chujo, Jen-Chieh Peng, T. Murakami, James Alexander, J. Hamblen, Johannes Peter Wessels, A. Soldatov, M. Togawa, E. Vazquez-Zambrano, J. Park, A. Rakotozafindrabe, K. Shoji, D. Isenhower, K. Okada, K. Sakashita, Takao Sakaguchi, Ryugo S. Hayano, K. Das, E. P. Hartouni, R. Averbeck, M. McCumber, M. Kasai, Y. Tsuchimoto, Byung-Sik Hong, M. Bai, Inkyu Park, P. W. Stankus, A. Bazilevsky, Xiong Wang, C. Klein-Boesing, Y. Tanaka, H. En'yo, A. Toia, Y. Riabov, L. Mašek, Kenta Shigaki, E. Mannel, Y. Iwanaga, Z. Conesa del Valle, C. Vale, B. S. Chang, Philippe Rosnet, M. J. Leitch, M. Nguyen, A. P.T. Palounek, S. Sawada, O. Dietzsch, A. D. Frawley, S. Yokkaichi, Dong Jo Kim, H. W. Van Hecke, C. Y. Chi, G. R. Young, A. S. Nyanin, E. T. Atomssa, T. C. Awes, Kyoichiro Ozawa, T. Liška, J. S. Bok, Jun Kikuchi, J. Klay, Alexandre Lebedev, Rachid Nouicer, M. Proissl, H. Valle, J. Ying, S. Huang, A. Franz, I. E. Yushmanov, Eun-Hee Kim, M. I. Nagy, H. J. Moon, F. Staley, L. Baksay, A. Veicht, D. M. Lee, Y. Onuki, Jason Kamin, Y. Ikeda, Dipanwita Dutta, Y. Nakamiya, S. P. Stoll, W. Holzmann, J. G. Boissevain, R. Vértesi, D. Hornback, D. Watanabe, Jan Rak, J. Hanks, A. Morreale, M. D. Malik, R. Lacey, Julia Velkovska, C. Baumann, S. Kametani, R. Granier de Cassagnac, K. Kiriluk, A. Adare, G. Baksay, S. S.E. Rosendahl, E. Vznuzdaev, H. A. Gustafsson, J. L. Charvet, C. Pinkenburg, Zhiying You, R. Bennett, M. Kawashima, G. Bunce, A. Taranenko, Jason Newby, M. Stepanov, G. Roche, Kazushi Miki, J. E. Frantz, A. Churyn, C. P. Singh, B. M. Johnson, T. Horaguchi, B. Sahlmueller, C. Zhang, Z. Fraenkel, D. Jouan, M. Finger, R. Pak, Brajesh K. Singh, Y. J. Kim, N. Kamihara, Alexei Khanzadeev, Jongmin Lee, E. Stenlund, J. B. Choi, P. Ružička, C. Oakley, A. Drees, R. J. Petti, A. Isupov, C. Suire, Herve Borel, D. Lynch, Viktor Riabov, J. H. Bhom, S. Tarafdar, H. Qu, T. V. Moukhanova, J. Sziklai, A. Taketani, A. Enokizono, Brian Cole, Eva Haslum, B. Lenzi, D. S. Jumper, V. L. Rykov, T. Dahms, P. Chung, R. K. Choudhury, S. Dairaku, M. Kurosawa, O. Zaudtke, J. Imrek, K. S. Joo, M. Virius, C. H. Chen, Hideki Hamagaki, K. Aoki, G. David, K. I. Hahn, A. Datta, J. Jin, E. M. Takagui, Taku Gunji, H. Gong, J. Seele, N. Apadula, F. Kajihara, A. Vossen, S. Butsyk, S. Esumi, D. Sharma, S. Zhou, R. Ichimiya, B. Azmoun, A. Král, M. J. Kweon, S. D. Rolnick, M. Oka, K. S. Lee, P. Liebing, R. A. Soltz, M. Grosse Perdekamp, M. E. Connors, T. Jones, Peter Christiansen, D. Winter, D. Yu Peressounko, K. B. Lee, B. Love, A. G. Litvinenko, A. Kozlov, R. Seto, K. Haruna, D. Roach, K. M. Kijima, I. Danchev, X. He, Y. Aramaki, V. Peresedov, J. Koster, Xingguo Li, M. Gonin, S. Batsouli, H. Masui, A. K. Dubey, A. A. Bickley, Vladimir Samsonov, A. Sukhanov, K. Kurita, K. N. Barish, H. Pereira, Y. Morino, S. Sano, Tamas Ferenc Csorgo, J. L. Nagle, M. L. Brooks, S. P. Sorensen, C. Silvestre, O. Chvala, Seong H. Kim, Marisilvia Donadelli, V. Bumazhnov, J. G. Lajoie, R. Tanabe, D. Layton, W. C. Chang, I. J. Choi, A. Kravitz, and Rushan Han

Subjects
Quark, Physics, Nuclear and High Energy Physics, Particle physics, Meson, 010308 nuclear & particles physics, Nuclear Theory, Hadron, 01 natural sciences, Gluon, Nuclear physics, Pion, 0103 physical sciences, High Energy Physics::Experiment, Rapidity, PHENIX detector, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider
Abstract

Measurements of transverse-single-spin asymmetries (A(N)) in p + p collisions at root s = 62.4 and 200 GeV with the PHENIX detector at the Relativistic Heavy Ion Collider are presented. At midrapidity, A(N) is measured for neutral pion and eta mesons reconstructed from diphoton decay, and, at forward rapidities, neutral pions are measured using both diphotons and electromagnetic clusters. The neutral-pion measurement of A(N) at midrapidity is consistent with zero with uncertainties a factor of 20 smaller than previous publications, which will lead to improved constraints on the gluon Sivers function. At higher rapidities, where the valence quark distributions are probed, the data exhibit sizable asymmetries. In comparison with previous measurements in this kinematic region, the new data extend the kinematic coverage in root s and p(T), and it is found that the asymmetries depend only weakly on root s. The origin of the forward A(N) is presently not understood quantitatively. The extended reach to higher p(T) probes the transition between transverse momentum dependent effects at low p(T) and multiparton dynamics at high p(T).

Published
2014

231. Cold-Nuclear-Matter Effects on Heavy-Quark Production at Forward and Backward Rapidity ind+AuCollisions atsNN=200 GeV

Author

S. Bathe, Agneta Oskarsson, K. R. Andrews, R. A. Soltz, S. H. Lee, M. Grosse Perdekamp, Y. Akiba, X. He, T. Sodre, Jongmin Lee, M. E. Connors, C. McKinney, S. Nagamiya, Vaclav Vrba, Klaus Johannes Reygers, K. S. Sim, Rui Wei, Vladimir Samsonov, D. Lynch, I. Tserruya, Yu. Efremenko, D. Hornback, R. Yang, Y. Aramaki, Robert Vertesi, V. Singh, S. Taneja, T. Jones, Peter Christiansen, A. Taranenko, K. Imai, D. Winter, D. Yu Peressounko, S. Tarafdar, Kazushi Miki, T. Horaguchi, J. Koster, Eva Haslum, Brajesh K. Singh, A. Taketani, M. Ouchida, D. S. Jumper, H. Masui, N. Means, Tamas Ferenc Csorgo, Y. J. Mao, T. Dahms, Hiromi Iinuma, M. Gonin, A. Kiss, C. Harper, J. L. Nagle, K. Sakashita, M. Sarsour, Mate Csanad, D. John, P. Castera, Senta Greene, A. Glenn, K. Karatsu, A. T. Basye, Eunja Kim, A. Veicht, Henner Buesching, T. L. Thomas, A. Iordanova, J. Ben-Benjamin, B. Fadem, E. O'Brien, Y. Hori, Anne Marie Sickles, Taku Gunji, H. Gong, Steve Edwards, Gary Grim, S. Dairaku, J. H. Kang, J. S. Haggerty, D. Kotov, S. R. Lee, R. S. Towell, K. V. Dharmawardane, J. Seele, A. Sukhanov, A. Deshpande, K. Kurita, K. S. Joo, H. Pereira, Ryugo S. Hayano, Hongfang Liu, X. Gong, D. E. Fields, J. S. Yoo, M. K. Dayananda, F. Kajihara, Y. Riabov, K. Watanabe, Y. Morino, Kenta Shigaki, Marcus Hohlmann, B. V. Jacak, K. Utsunomiya, Inkyu Park, M. Nihashi, K. Shoji, M. Nguyen, K. N. Barish, L. A. Linden Levy, Xiong Wang, Z. Conesa del Valle, M. McCumber, C. Silvestre, A. S. Nyanin, N. Apadula, Dong Jo Kim, Rachid Nouicer, A. N. Zelenski, M. Proissl, G. R. Young, Jason Kamin, I. Garishvili, F. Wei, S. Butsyk, M. Wysocki, P. W. Stankus, M. Virius, Manabu Togawa, K. Fujiwara, Y. Onuki, B. Bannier, S. Zhou, A. Vossen, Y. L. Yamaguchi, J. Hanks, Jan Rak, S. Sano, R. Lacey, Marisilvia Donadelli, V. Bumazhnov, Sung Keun Park, O. Dietzsch, S. P. Stoll, R. Granier de Cassagnac, A. Adare, S. D. Rolnick, K. B. Lee, E. T. Atomssa, Y. Miyachi, S. S.E. Rosendahl, C. L. Woody, N. N. Ajitanand, H. A. Gustafsson, Y. S. Lai, R. P. Pisani, H. Valle, S. Esumi, Y. Watanabe, T. Murakami, J. C. Peng, C. H. Chen, D. Sharma, A. Manion, Dipanwita Dutta, H. W. Van Hecke, M. L. Brooks, R. Ichimiya, Ajit Kumar Mohanty, G. Bunce, Y. Ikeda, I. Younus, C. Gal, T. A. Shibata, C. L. Silva, T. Sato, R. Tanabe, P. Ružička, B. Azmoun, A. Král, Takahiro Nakamura, D. McGlinchey, Susumu Oda, A. Caringi, D. Roach, Julia Velkovska, Alexander Milov, K. M. Kijima, V. S. Pantuev, Y. Fukao, Viktor Riabov, A. Durum, M. Rosati, B. Love, I. Ravinovich, C. Y. Chi, T. Kempel, S. Kaneti, M. Bai, R. Akimoto, I. V. Sourikova, Aaron Angerami, K. Hashimoto, D. Isenhower, D. Jouan, J. Hamblen, W. A. Zajc, T. Hester, A. Toia, I. Nakagawa, Young-Ki Kim, T. Engelmore, K. Yamaura, O. Drapier, Frank Ellinghaus, M. Kurosawa, Xingguo Li, E. R. Kinney, M. Oka, C. Pinkenburg, E. C. Aschenauer, V. Baublis, Jiangyong Jia, A. Denisov, Yuki Watanabe, Y. Goto, V. Cianciolo, P. Kline, S. P. Sorensen, G. Roche, R. Seto, Sergey Fokin, K. Okada, K. S. Lee, H. Qu, D. Kleinjan, M. Naglis, M. Chiu, S. Sawada, C. A. Ogilvie, O. Chvala, Eric Appelt, I. Danchev, D. P. Morrison, H. En'yo, S. Campbell, B. H. Kang, M. J. Leitch, Zhiying You, R. Bennett, J. Ying, J. G. Lajoie, P. Liebing, M. Kawashima, Hideki Hamagaki, K. Aoki, M. Finger, A. Franz, M. Savastio, Masayasu Ishihara, N. Grau, Martin Purschke, T. K. Hemmick, Rushan Han, A. Enokizono, C. A. Aidala, G. David, K. I. Hahn, J. M. Durham, Yasuo Miake, A. Dion, M. I. Nagy, A. Kravitz, P. Chung, Y. J. Kwon, H. Al-Ta'Ani, Tatsuya Chujo, D. Broxmeyer, J. Jin, D. Kawall, A. Datta, E. M. Takagui, H. Themann, Prashant Shukla, A. Morreale, C. Baumann, Motoi Inaba, Z. Fraenkel, S. Yokkaichi, L. Kochenda, M. Issah, J. S. Kang, R. M. Wright, J. Murata, S. F. Pate, Ke. Nakamura, Gerd Joachim Kunde, R. K. Choudhury, C. P. Singh, I. Shein, B. M. Johnson, H. Al-Bataineh, R. Armendariz, R. J. Petti, K. Sedgwick, Johannes Peter Wessels, J. Sziklai, S. Motschwiller, Brian Cole, V. Papavassiliou, R. Pak, Beomkyu Kim, Byoungchoo Park, C. Oakley, A. Drees, I. J. Choi, D. Watanabe, M. D. Malik, E. Vznuzdaev, Alice Mignerey, L. D'Orazio, Takao Sakaguchi, A. D. Frawley, S. Huang, W. Holzmann, Maya Hachiya Shimomura, R. S. Hollis, Y. I. Makdisi, M. J. Tannenbaum, H. Torii, A. Kim, E. Tennant, S. Rembeczki, P. L. McGaughey, Minghui Liu, M. Heffner, Kenneth Francis Read, A. V. Kazantsev, Dmitry Blau, L. Tomášek, E. J. Desmond, E. Vazquez-Zambrano, M. Kasai, Y. Tsuchimoto, Y. Iwanaga, L. Patel, I. E. Yushmanov, L. Guo, Alexei Khanzadeev, T. C. Awes, Kyoichiro Ozawa, T. Liška, J. S. Bok, Jun Kikuchi, E. Stenlund, J. B. Choi, J. H. Bhom, Charles Maguire, T. V. Moukhanova, M. Mendoza, S. N. White, Deepa Thomas, Jason Newby, J. E. Frantz, Kiyoshi Tanida, E. Kistenev, Zvi Hirsh Citron, K. Nakano, P. Lichtenwalner, W. E. Sondheim, D. Ivanischev, J. Sun, H. Pei, K. Boyle, B. Meredith, John Hill, F. Matathias, Kensuke Homma, Toru Sugitate, E. Richardson, Atsushi Takahara, K. A. Drees, Y. Tanaka, B. Bassalleck, K. Das, E. Mannel, H. J. Moon, L. Baksay, M. Konno, Y. Nakamiya, B. Komkov, Norio Saito, Tsutomu Mibe, M. A. L. Leite, G. Baksay, H. H. Shim, S. H. Lim, François Fleuret, R. Belmont, J. S. Kapustinsky, V. Babintsev, X. Jiang, B. Sahlmueller, Y. J. Kim, T. Ichihara, J. T. Mitchell, R. Seidl, S. W. Nam, M. Tomášek, Vladislav Manko, G. S. Kyle, James Alexander, M. Slunečka, Takahiro Fusayasu, R. Averbeck, Byung-Sik Hong, A. Bazilevsky, S. Belikov, Alexandre Lebedev, D. M. Lee, C. Vale, D. Silvermyr, W. J. Park, Christopher Rosen, and A. Yanovich

Subjects
Quark, Semileptonic decay, Physics, Particle physics, General Physics and Astronomy, Binary number, Nuclear matter, Nuclear physics, Deuterium, Transverse momentum, High Energy Physics::Experiment, Rapidity, Nuclear Experiment, Relativistic Heavy Ion Collider
Abstract

The PHENIX experiment has measured open heavy-flavor production via semileptonic decay over the transverse momentum range 1 < p(T) < 6 GeV/c at forward and backward rapidity (1.4 < vertical bar y vertical bar < 2.0) in d + Au and p + p collisions at root s(NN) = 200 GeV. In central d + Au collisions, relative to the yield in p + p collisions scaled by the number of binary nucleon-nucleon collisions, a suppression is observed at forward rapidity (in the d-going direction) and an enhancement at backward rapidity (in the Au-going direction). Predictions using nuclear-modified-parton-distribution functions, even with additional nuclear-p(T) broadening, cannot simultaneously reproduce the data at both rapidity ranges, which implies that these models are incomplete and suggests the possible importance of final-state interactions in the asymmetric d + Au collision system. These results can be used to probe cold-nuclear-matter effects, which may significantly affect heavy-quark production, in addition to helping constrain the magnitude of charmonia-breakup effects in nuclear matter.

Published
2014

232. Azimuthal-Angle Dependence of Charged-Pion-Interferometry Measurements with Respect to Second- and Third-Order Event Planes inAu+AuCollisions atsNN=200 GeV

Author

M. I. Nagy, D. Watanabe, E. Vznuzdaev, Beomkyu Kim, A. Deshpande, Johannes Peter Wessels, P. Tarján, K. A. Drees, Senta Greene, A. T. Basye, A. V. Kazantsev, Taku Gunji, H. Gong, J. Seele, B. Fadem, E. O'Brien, R. A. Soltz, L. Tomášek, F. Kajihara, M. Grosse Perdekamp, M. E. Connors, K. Das, S. Butsyk, Alice Mignerey, T. C. Awes, Kyoichiro Ozawa, T. Liška, J. S. Bok, E. P. Hartouni, H. Pei, Tadaaki Isobe, S. Zhou, B. Komkov, Takao Sakaguchi, M. Rosati, P. L. McGaughey, Peter Christiansen, M. A. L. Leite, S. D. Rolnick, A. D. Frawley, S. Afanasiev, T. Nakamura, D. Winter, S. Huang, J. Newby, G. Roche, D. Yu Peressounko, A. Sukhanov, K. Kurita, Ajit Kumar Mohanty, T. A. Shibata, H. Pereira, A. A. Vinogradov, W. Holzmann, Maya Hachiya Shimomura, Y. I. Makdisi, D. Hornback, A. Kiss, Y. Morino, T. Sato, R. Belmont, Henner Buesching, J. S. Kapustinsky, Steve Edwards, R. S. Towell, Y. Ikeda, M. Naglis, V. Babintsev, Minghui Liu, C. L. Silva, I. Garishvili, F. Wei, M. J. Tannenbaum, G. S. Kyle, A. Taranenko, D. Isenhower, I. Ravinovich, Y. J. Kwon, H. Torii, Kyeongpil Lee, James Alexander, A. Toia, Masayasu Ishihara, M. Gonin, C. Pinkenburg, Kazushi Miki, J. Ide, Marcus Hohlmann, S. P. Sorensen, H. A. Gustafsson, R. Averbeck, Byung-Sik Hong, Brajesh K. Singh, N. Saito, L. A. Linden Levy, A. Bazilevsky, K. Karatsu, Y. J. Mao, Y. Tanaka, M. Heffner, Kenneth Francis Read, P. Mikeš, O. Chvala, C. Y. Chi, Yasutada Akiba, D. Kawall, C. Zhang, I. Younus, Seong H. Kim, T. L. Thomas, E. Mannel, Anne Marie Sickles, Alexandre Lebedev, H. Themann, D. J. Kim, J. H. Kang, C. Baumann, J. G. Lajoie, D. M. Lee, S. Kametani, S. Tarafdar, E. T. Atomssa, Agneta Oskarsson, D. Kotchetkov, J. S. Haggerty, C. P. Singh, J. Murata, Viktor Riabov, B. M. Johnson, John Matthew Durham, Y. Berdnikov, Gerd Joachim Kunde, G. R. Young, P. Chung, M. Bai, I. J. Choi, A. Kravitz, K. B. Lee, A. Isupov, K. Kiriluk, I. Shein, M. Mishra, Y. Onuki, Ryugo S. Hayano, J. Sziklai, A. Datta, E. H. Kim, L. Baksay, Brian Cole, K. Tanida, Eva Haslum, B. Lenzi, Vaclav Vrba, O. Dietzsch, K. Sedgwick, H. Valle, J. Hamblen, Klaus Johannes Reygers, Y. S. Lai, T. Ichihara, M. Kurosawa, R. Lacey, Rui Wei, Y. Riabov, A. Yu. Semenov, R. Granier de Cassagnac, Charles Maguire, A. Adare, W. Xie, D. Roach, K. M. Kijima, Takahiro Fusayasu, P. Rosnet, Dipanwita Dutta, A. K. Purwar, K. Fujiwara, Y. Watanabe, Alexander Malakhov, I. Nakagawa, Y. L. Yamaguchi, Kenta Shigaki, M. Nguyen, D. Silvermyr, P. Ruzicka, W. A. Zajc, Xingguo Li, M. J. Leitch, V. Pantuev, E. Kistenev, Julia Velkovska, L. S. Zolin, E. Leitner, W. J. Park, V. Baublis, J. Jia, A. Denisov, V. Cianciolo, J. Jin, Takafumi Niida, E. M. Takagui, Mate Csanad, Christopher Rosen, Sergey Fokin, Zhiying You, A. Yanovich, H. W. Van Hecke, R. Bennett, S. N. White, M. Kawashima, K. S. Sim, Zvi Hirsh Citron, A. S. Nyanin, Rachid Nouicer, M. Proissl, K. Nakano, K. Okada, W. E. Sondheim, M. Wysocki, D. Ivanischev, K. Boyle, P. A. Rukoyatkin, B. Meredith, Martin Purschke, C. A. Aidala, John Hill, Toru Sugitate, E. J. Desmond, F. Matathias, M. Finger, Kensuke Homma, E. Richardson, François Fleuret, M. Togawa, E. Vazquez-Zambrano, R. Yang, P. Constantin, J. Park, Jongmin Lee, B. Bassalleck, R. P. Pisani, E.J. Kim, M. Konno, Y. Tsuchimoto, C. L. Woody, Y. Nakamiya, G. Baksay, A. Morreale, S. Sawada, I. E. Yushmanov, D. Lynch, J. Ying, A. Franz, Z. Fraenkel, B. Sahlmueller, A. Berdnikov, Y. J. Kim, J. T. Mitchell, Y. Fukao, R. Seidl, C. M. Camacho, R. K. Choudhury, Prashant Shukla, Vladislav Manko, X. He, M. Slunečka, T. Hester, S. F. Pate, D. S. Jumper, Vladimir Samsonov, B. Azmoun, A. Král, T. Todoroki, S. Belikov, O. Drapier, P. Liebing, T. Dahms, N. A. Sparks, H. Al-Bataineh, C. Vale, S. Dairaku, Alexei Khanzadeev, E. Stenlund, I. V. Sourikova, Y. Aramaki, J. L. Nagle, Motoi Inaba, R. M. Wright, V. Papavassiliou, M. Oka, V. Peresedov, N. Kamihara, M. Virius, Robert Vertesi, K. S. Lee, A. Dion, C. Silvestre, C. H. Chen, Marisilvia Donadelli, V. Bumazhnov, T. V. Moukhanova, S. Nagamiya, M. Ouchida, Atsushi Taketani, A. Enokizono, A. Glenn, N. Means, K. S. Joo, H. En'yo, J. Koster, A. Rakotozafindrabe, R. Tanabe, Malik, Rushan Han, S. Esumi, D. Sharma, R. Ichimiya, H. Masui, A. A. Bickley, K. N. Barish, S. Sano, D. E. Fields, B. V. Jacak, M. McCumber, M. L. Brooks, S. Yokkaichi, J. P. Wood, J. Hanks, Sung Keun Park, Alexander Milov, N. N. Ajitanand, R. Luechtenborg, T. Engelmore, B. Love, Frank Ellinghaus, Susumu Oda, E. R. Kinney, A. Durum, D. P. Morrison, S. Campbell, K. Yamaura, A. G. Litvinenko, Tatsuya Chujo, I. Tserruya, Yu. Efremenko, V. Singh, Jen-Chieh Peng, J. E. Frantz, Inkyu Park, Xiong Wang, A. Kozlov, A. Veicht, R. Seto, I. Danchev, R. Pak, A. Drees, K. Sakashita, T. Csorgo, Jason Kamin, N. Grau, S. P. Stoll, Y. Goto, T. Kempel, Dong-Hun Kim, S. S.E. Rosendahl, G. Bunce, D. Jouan, Kenichi Imai, H. Qu, S. Bathe, M. Chiu, Hideki Hamagaki, K. Aoki, J. Rak, G. David, K. I. Hahn, C. A. Ogilvie, T. K. Hemmick, Yasuo Miake, K. Watanabe, H. Liu, K. Shoji, L. Kochenda, M. Issah, T. Horaguchi, and P. W. Stankus

Subjects
Physics, Azimuth, Pion, Correlation function, Plane (geometry), Oscillation, media_common.quotation_subject, General Physics and Astronomy, Eccentricity (behavior), Atomic physics, Relativistic Heavy Ion Collider, Event (particle physics), media_common
Abstract

Charged-pion-interferometry measurements were made with respect to the second- and third-order event plane for Au+Au collisions at sqrt[s_{NN}]=200 GeV. A strong azimuthal-angle dependence of the extracted Gaussian-source radii was observed with respect to both the second- and third-order event planes. The results for the second-order dependence indicate that the initial eccentricity is reduced during the medium evolution, which is consistent with previous results. In contrast, the results for the third-order dependence indicate that the initial triangular shape is significantly reduced and potentially reversed by the end of the medium evolution, and that the third-order oscillations are largely dominated by the dynamical effects from triangular flow.

Published
2014

233. Heavy-flavor electron-muon correlations inp+pandd+Aucollisions atsNN=200GeV

Author

Yuhei Morino, Mate Csanad, C. L. Woody, B. Azmoun, Y. J. Mao, A. Král, J. E. Frantz, Jongmin Lee, Herve Borel, A. Berdnikov, A. Taketani, Hiromi Iinuma, D. S. Jumper, Makoto Oka, Tadaaki Isobe, V. L. Rykov, K. O. Eyser, A. Caringi, Senta Greene, P. Rosnet, M. Nihashi, Vladimir Samsonov, M. Gonin, Y. Onuki, David D'Enterria, Bruno Lenzi, K. Fujiwara, M. K. Dayananda, K. S. Lee, I. Ravinovich, A. Dion, M. Slunečka, E. Kistenev, M. Bai, S. Dairaku, Zhiying You, R. Bennett, T. L.T. Thomas, M. Finger, O. Zaudtke, P. L. McGaughey, M. Virius, Manabu Togawa, Y. L. Yamaguchi, Y. Nakamiya, D. Lynch, E. O'Brien, X. Jiang, C. H. Chen, D. Kawall, A. Yu. Semenov, J. Gosset, R. Lacey, D. Mukhopadhyay, M. Wysocki, M. I. Nagy, T. Niida, Gary Grim, P. Lichtenwalner, A. Sukhanov, K. Kurita, P. Liebing, D. Watanabe, S. Batsouli, Marcus Hohlmann, M. D. Malik, I. V. Sourikova, E. Vznuzdaev, H. Pereira, K. V. Dharmawardane, R. Granier de Cassagnac, R. P. Pisani, A. Adare, K. Tanida, S. Belikov, K. S. Joo, A. Lebedev, G. Baksay, Ralf Peter Averbeck, Dmitry Blau, Taku Gunji, H. Gong, Charles Maguire, K. N. Barish, Paul Constantin, R. Pak, C. M. Camacho, N. N. Ajitanand, R. S. Towell, E. J. Desmond, A. Ster, Prashant Shukla, M. Kawashima, H. Pei, I. Tserruya, S. Taneja, K. A. Drees, Zvi Hirsh Citron, K. Karatsu, T. Ichihara, Torsten Dahms, S. Bathe, Y. Fukao, Anne Marie Sickles, H. Themann, I. Garishvili, F. Wei, J. L. Nagle, F. Kajihara, A. Basye, M. Grosse Perdekamp, J. Newby, M. E. Connors, Gerd Joachim Kunde, I. Shein, J. Rak, J. Seele, R. Belmont, S. Yokkaichi, S. F. Pate, N. Apadula, J. Hanks, E. Vazquez-Zambrano, R. Petti, S. Esumi, D. Sharma, A. Rakotozafindrabe, Eun Joo Kim, O. Dietzsch, E. T. Atomssa, H. Valle, M. Ouchida, A. P.T. Palounek, Kensuke Homma, E. Richardson, Takahiro Nakamura, Susumu Oda, R. Ichimiya, Ke. Nakamura, A. Durum, J. Alexander, Takahiro Fusayasu, S. Butsyk, S. V. Afanasiev, L. Aphecetche, M. Kasai, Dipanwita Dutta, Minghui Liu, M. Heffner, S. Zhou, H. Al-Bataineh, Kenneth Francis Read, N. Means, J. Asai, Alexander Malakhov, Y. Tsuchimoto, V. Singh, J. B. Choi, Y. Iwanaga, H. Van Hecke, J. S. Bok, S. W. Nam, H. A. Gustafsson, G. S. Kyle, S. Chernichenko, Julia Velkovska, S. P. Sorensen, O. Chvala, Seong H. Kim, J. G. Lajoie, C. Silvestre, S. K. Park, Johannes Peter Wessels, S. D. Rolnick, S. Sano, Y. Ikeda, Tae-Yeon Lee, M. Rosati, A. V. Kazantsev, K. Yamaura, I. E. Yushmanov, Shingo Sakai, Alexei Khanzadeev, G. R. Young, C. Zhang, T. Hester, A. Kravitz, K. B. Lee, A. Hadj Henni, M. L. Brooks, I. Danchev, Marisilvia Donadelli, V. Bumazhnov, J. G. Boissevain, P. Ružička, Tamás Csörgő, Martin Purschke, E. P. Hartouni, C. A. Aidala, B. Bassalleck, M. Konno, E. Stenlund, S. Huang, K. Sedgwick, Alberto Baldisseri, L. Tomášek, V-N. Tram, Animesh Datta, N. Grau, Byung-Sik Hong, Hongfang Liu, D. E. Fields, V. Papavassiliou, A. Bazilevsky, D. Silvermyr, L. S. Zolin, W. J. Park, M. Chiu, Ajit Kumar Mohanty, A. Taranenko, Beomkyu Kim, Viktor Riabov, Christopher Rosen, T. A. Shibata, T. Sato, T. Murakami, E. M. Takagui, Kazushi Miki, T. Horaguchi, P. Mikeš, Ryugo S. Hayano, C. Y. Chi, M. Proissl, D. Winter, Wei Xie, A. Deshpande, I. J. Choi, B. Love, J. T. Mitchell, Agneta Oskarsson, Motoi Inaba, J. C. Hill, R. M. Wright, K. S. Sim, Aaron Angerami, D. Yu Peressounko, C. Baumann, A. G. Litvinenko, A. Glenn, D. Roach, Y. Riabov, T. C. Awes, Kyoichiro Ozawa, T. Liška, Kenta Shigaki, M. Nguyen, K. M. Kijima, M. McCumber, A. K. Purwar, S. Kametani, R. Tanabe, P. D. Barnes, A. Yanovich, D. M. Lee, D. Layton, R. A. Soltz, C. Pinkenburg, M. Stepanov, Y. Berdnikov, Y. Akiba, Z. Fraenkel, M. Mishra, S. Nagamiya, Jun Kikuchi, R. Seidl, Vladislav Manko, G. Roche, D. Isenhower, R. Yang, Xingguo Li, L. Mašek, W. A. Zajc, S. Sawada, Eunja Kim, A. A. Vinogradov, A. S. Nyanin, J. Ying, A. Franz, Yu. Efremenko, C. P. Singh, Vaclav Vrba, Klaus Johannes Reygers, Astrid Morreale, T. V. Moukhanova, Rachid Nouicer, S. N. White, V. Baublis, A. Denisov, Rui Wei, K. Kiriluk, A. Kozlov, R. Seto, K. Haruna, M. Naglis, Y. Tanaka, R. K. Choudhury, Jiangyong Jia, B. M. Johnson, S. Tarafdar, Deepa Thomas, J. H. Kang, C. L. Silva, D. H. Kim, J. S. Haggerty, K. Imai, V. Cianciolo, E. Mannel, Y. Goto, Jen-Chieh Peng, Y. Tomita, J. L. Charvet, A. Kiss, C. Vale, B. S. Chang, W. C. Chang, B. Komkov, Sergey Fokin, A. Isupov, Eva Haslum, B. Fadem, V. Dzhordzhadze, Henner Buesching, Steve Edwards, X. He, J. Sziklai, H. J. Moon, Norio Saito, Tsutomu Mibe, J. L. Klay, K. Das, F. Staley, L. Baksay, M. A. L. Leite, Inkyu Park, A. Enokizono, K. Nakano, Barbara Jacak, Y. Aramaki, V. Peresedov, Masayasu Ishihara, J. M. Durham, Robert Vertesi, P. Chung, Xiong Wang, Z. Conesa del Valle, Brian Cole, Dong Jo Kim, D. Kleinjan, Rushan Han, J. Imrek, W. E. Sondheim, Y. S. Lai, D. Ivanischev, L. A. Linden Levy, J. Koster, M. Kurosawa, J. S. Kapustinsky, V. Babintsev, K. Boyle, P. A. Rukoyatkin, D. Hornback, A. Veicht, H. Masui, B. Meredith, A. A. Bickley, Christophe Pierre Suire, Alexander Milov, I. Nakagawa, T. Engelmore, O. Drapier, Frank Ellinghaus, H. A. Torii, Toru Sugitate, E. R. Kinney, D. P. Morrison, S. Campbell, V. E. Semenov, Tatsuya Chujo, François Fleuret, J. Jin, Y. Watanabe, I. Younus, J. Murata, A. Soldatov, V. S. Pantuev, J. Hamblen, K. Okada, B. Sahlmueller, H. En'yo, M. J. Leitch, M. J. Kweon, Alberica Toia, Jihyun Bhom, Y. J. Kwon, K. Sakashita, Jason Kamin, K. Watanabe, Christian Klein-Boesing, K. Shoji, Anand Kumar Dubey, S. P. Stoll, Yongsun Kim, P. W. Stankus, S. S.E. Rosendahl, G. Bunce, J.-G. Park, Maya Hachiya Shimomura, Y. I. Makdisi, A. Churyn, H. Qu, D. Jouan, Hideki Hamagaki, K. Aoki, G. David, K. I. Hahn, M. J. Tannenbaum, Tim Jones, N. Kamihara, Peter Christiansen, T. Kempel, S. Rembeczki, Aram Kim, F. Matathias, Alice Mignerey, L. D'Orazio, Takao Sakaguchi, C. Oakley, A. Drees, A. D. Frawley, W. Holzmann, C. A. Ogilvie, T. K. Hemmick, Bhawani Singh, Yasuo Miake, L. Kochenda, M. Issah, Don McGlinchey, and P. Tarján

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Muon, Electron, Flavor
Published
2014

234. Azimuthal-angle dependence of charged-pion-interferometry measurements with respect to second- and third-order event planes in Au+Au collisions at √[S(NN)]=200 GeV

Author

A, Adare, S, Afanasiev, C, Aidala, N N, Ajitanand, Y, Akiba, H, Al-Bataineh, J, Alexander, K, Aoki, Y, Aramaki, E T, Atomssa, R, Averbeck, T C, Awes, B, Azmoun, V, Babintsev, M, Bai, G, Baksay, L, Baksay, K N, Barish, B, Bassalleck, A T, Basye, S, Bathe, V, Baublis, C, Baumann, A, Bazilevsky, S, Belikov, R, Belmont, R, Bennett, A, Berdnikov, Y, Berdnikov, A A, Bickley, J S, Bok, K, Boyle, M L, Brooks, H, Buesching, V, Bumazhnov, G, Bunce, S, Butsyk, C M, Camacho, S, Campbell, C-H, Chen, C Y, Chi, M, Chiu, I J, Choi, R K, Choudhury, P, Christiansen, T, Chujo, P, Chung, O, Chvala, V, Cianciolo, Z, Citron, B A, Cole, M, Connors, P, Constantin, M, Csanád, T, Csörgő, T, Dahms, S, Dairaku, I, Danchev, K, Das, A, Datta, G, David, A, Denisov, A, Deshpande, E J, Desmond, O, Dietzsch, A, Dion, M, Donadelli, O, Drapier, A, Drees, K A, Drees, J M, Durham, A, Durum, D, Dutta, S, Edwards, Y V, Efremenko, F, Ellinghaus, T, Engelmore, A, Enokizono, H, En'yo, S, Esumi, B, Fadem, D E, Fields, M, Finger, F, Fleuret, S L, Fokin, Z, Fraenkel, J E, Frantz, A, Franz, A D, Frawley, K, Fujiwara, Y, Fukao, T, Fusayasu, I, Garishvili, A, Glenn, H, Gong, M, Gonin, Y, Goto, R, Granier de Cassagnac, N, Grau, S V, Greene, M, Grosse Perdekamp, T, Gunji, H-Å, Gustafsson, J S, Haggerty, K I, Hahn, H, Hamagaki, J, Hamblen, R, Han, J, Hanks, E P, Hartouni, E, Haslum, R, Hayano, X, He, M, Heffner, T K, Hemmick, T, Hester, J C, Hill, M, Hohlmann, W, Holzmann, K, Homma, B, Hong, T, Horaguchi, D, Hornback, S, Huang, T, Ichihara, R, Ichimiya, J, Ide, Y, Ikeda, K, Imai, M, Inaba, D, Isenhower, M, Ishihara, T, Isobe, M, Issah, A, Isupov, D, Ivanischev, B V, Jacak, J, Jia, J, Jin, B M, Johnson, K S, Joo, D, Jouan, D S, Jumper, F, Kajihara, S, Kametani, N, Kamihara, J, Kamin, J H, Kang, J, Kapustinsky, K, Karatsu, D, Kawall, M, Kawashima, A V, Kazantsev, T, Kempel, A, Khanzadeev, K M, Kijima, B I, Kim, D H, Kim, D J, Kim, E, Kim, E-J, Kim, S H, Kim, Y-J, Kim, E, Kinney, K, Kiriluk, A, Kiss, E, Kistenev, L, Kochenda, B, Komkov, M, Konno, J, Koster, D, Kotchetkov, A, Kozlov, A, Král, A, Kravitz, G J, Kunde, K, Kurita, M, Kurosawa, Y, Kwon, G S, Kyle, R, Lacey, Y S, Lai, J G, Lajoie, A, Lebedev, D M, Lee, J, Lee, K, Lee, K B, Lee, K S, Lee, M J, Leitch, M A L, Leite, E, Leitner, B, Lenzi, X, Li, P, Liebing, L A, Linden Levy, T, Liška, A, Litvinenko, H, Liu, M X, Liu, B, Love, R, Luechtenborg, D, Lynch, C F, Maguire, Y I, Makdisi, A, Malakhov, M D, Malik, V I, Manko, E, Mannel, Y, Mao, H, Masui, F, Matathias, M, McCumber, P L, McGaughey, N, Means, B, Meredith, Y, Miake, A C, Mignerey, P, Mikeš, K, Miki, A, Milov, M, Mishra, J T, Mitchell, A K, Mohanty, Y, Morino, A, Morreale, D P, Morrison, T V, Moukhanova, J, Murata, S, Nagamiya, J L, Nagle, M, Naglis, M I, Nagy, I, Nakagawa, Y, Nakamiya, T, Nakamura, K, Nakano, J, Newby, M, Nguyen, T, Niida, R, Nouicer, A S, Nyanin, E, O'Brien, S X, Oda, C A, Ogilvie, M, Oka, K, Okada, Y, Onuki, A, Oskarsson, M, Ouchida, K, Ozawa, R, Pak, V, Pantuev, V, Papavassiliou, I H, Park, J, Park, S K, Park, W J, Park, S F, Pate, H, Pei, J-C, Peng, H, Pereira, V, Peresedov, D Yu, Peressounko, C, Pinkenburg, R P, Pisani, M, Proissl, M L, Purschke, A K, Purwar, H, Qu, J, Rak, A, Rakotozafindrabe, I, Ravinovich, K F, Read, K, Reygers, V, Riabov, Y, Riabov, E, Richardson, D, Roach, G, Roche, S D, Rolnick, M, Rosati, C A, Rosen, S S E, Rosendahl, P, Rosnet, P, Rukoyatkin, P, Ružička, B, Sahlmueller, N, Saito, T, Sakaguchi, K, Sakashita, V, Samsonov, S, Sano, T, Sato, S, Sawada, K, Sedgwick, J, Seele, R, Seidl, A Yu, Semenov, R, Seto, D, Sharma, I, Shein, T-A, Shibata, K, Shigaki, M, Shimomura, K, Shoji, P, Shukla, A, Sickles, C L, Silva, D, Silvermyr, C, Silvestre, K S, Sim, B K, Singh, C P, Singh, V, Singh, M, Slunečka, R A, Soltz, W E, Sondheim, S P, Sorensen, I V, Sourikova, N A, Sparks, P W, Stankus, E, Stenlund, S P, Stoll, T, Sugitate, A, Sukhanov, J, Sziklai, E M, Takagui, A, Taketani, R, Tanabe, Y, Tanaka, K, Tanida, M J, Tannenbaum, S, Tarafdar, A, Taranenko, P, Tarján, H, Themann, T L, Thomas, T, Todoroki, M, Togawa, A, Toia, L, Tomášek, H, Torii, R S, Towell, I, Tserruya, Y, Tsuchimoto, C, Vale, H, Valle, H W, van Hecke, E, Vazquez-Zambrano, A, Veicht, J, Velkovska, R, Vértesi, A A, Vinogradov, M, Virius, V, Vrba, E, Vznuzdaev, X R, Wang, D, Watanabe, K, Watanabe, Y, Watanabe, F, Wei, R, Wei, J, Wessels, S N, White, D, Winter, J P, Wood, C L, Woody, R M, Wright, M, Wysocki, W, Xie, Y L, Yamaguchi, K, Yamaura, R, Yang, A, Yanovich, J, Ying, S, Yokkaichi, Z, You, G R, Young, I, Younus, I E, Yushmanov, W A, Zajc, C, Zhang, S, Zhou, and L, Zolin

Abstract

Charged-pion-interferometry measurements were made with respect to the second- and third-order event plane for Au+Au collisions at sqrt[s_{NN}]=200 GeV. A strong azimuthal-angle dependence of the extracted Gaussian-source radii was observed with respect to both the second- and third-order event planes. The results for the second-order dependence indicate that the initial eccentricity is reduced during the medium evolution, which is consistent with previous results. In contrast, the results for the third-order dependence indicate that the initial triangular shape is significantly reduced and potentially reversed by the end of the medium evolution, and that the third-order oscillations are largely dominated by the dynamical effects from triangular flow.

Published
2014

235. CREB antisense oligonucleotides induce non-apoptotic cell death in proliferating leukemia cells, but not normal hematopoietic cells, by a bizarre non-antisense mechanism

Author

Fumimaro Takaku, M Koizumi, Yoshio Yazaki, M Kaneko, Kumiko Saeki, K Fujiwara, and Akira Yuo

Subjects
Cancer Research, Programmed cell death, CD34, Antigens, CD34, Bone Marrow Cells, Biology, CREB, In Situ Nick-End Labeling, Tumor Cells, Cultured, medicine, Cyclic AMP Response Element-Binding Protein, Leukemia, Base Sequence, Cell Death, Hematology, Oligonucleotides, Antisense, medicine.disease, Molecular biology, Haematopoiesis, Oncology, Cell culture, Apoptosis, Immunology, biology.protein, Cell Division, K562 cells
Abstract

We report that antisense phosphorothioate oligodeoxyribonucleotides (PS-ODNs) against cyclic AMP response element-binding protein (CREB) induce the death of human leukemia cell lines including HL-60, Kasumi-1 and K562, OCI-AML1a and also primary leukemia cells isolated from patients with acute myelocytic leukemia and chronic myelocytic leukemia in blastic crisis. In contrast, normal human bone marrow CD34+ cells and normal peripheral blood lymphocytes were resistant to the antisense-mediated cell death. We found that antisense-treated HL-60 cells had prominent nuclear fragmentations but lacked apoptotic features including internucleosomal DNA cleavage and TUNEL positivity. Cell cycle analysis demonstrated a remarkable reduction in G1 phase population along with a mild accumulation of S phase and good preservation of G2/M phase, indicating cells died at G2/M without cycling into G1 phase. None of the sense-sequenced PS-ODNs induced cell death. Further, neither the expression nor the message of CREB protein was reduced by antisense treatment, indicating that cell death was mediated by a non-antisense mechanism. On the other hand, no consensus oligonucleotide sequence for cell death induction was detected. Rather, we found a good correlation between the melting temperatures and the anti-proliferative activities of the oligonucleotides. Thus, CREB antisense PS-ODNs selectively induce a non-apoptotic cell death in leukemic cells by an unknown hybridization-dependent mechanism.

Published
2001

236. [Untitled]

Author

N. Petrova, K. Fujiwara, and Tadato Mizota

Subjects
Exothermic reaction, Chemistry, Enthalpy, Inorganic chemistry, Calorimetry, Hydration energy, Zeolite, Magnesium ion, Calorimeter, Enthalpy change of solution
Abstract

The enthalpy of hydration of purified clinoptilolite from Beli Plast, Bulgaria, and various cation-exchanged types such as Na-, K-, Ca- and Mg-clinoptilolite was determined by the adiabatic water-vapor absorption calorimeter. The hydration enthalpy becomes more exothermic in the sequence K, Na, Ca, Mg depending on hydration energy values of exchanged cations. Na-clinoptilolite would be an efficient heat exchanger in a wide temperature range of dehydration, 180–300°C, while Mg-clinoptilolite in higher temperatures, 300–350°C.

Published
2001

237. Formation of Brookite-type TiO2 Titania by Mechanical Alloying

Author

Keiichi N. Ishihara, Takashi Wakamatsu, Takahiro K. Fujiwara, and P. Hideo Shingu

Subjects
Anatase, Materials science, Brookite, Mechanical Engineering, Inorganic chemistry, Metals and Alloys, Industrial and Manufacturing Engineering, Rutile, visual_art, Materials Chemistry, Photocatalysis, visual_art.visual_art_medium, Single phase, Ball mill
Abstract

Three polymorphs of titania, rutile, anatase and brookite have been known. In this work, brookite was synthesized from anatase by using a shaker ball-milling (NEV-MA8, Nissin-Giken Co., Ltd). Three experimental conditions, weak, medium and strong ball-millings, varied with changing shaking frequency and TiO2 powder mass, were carried out. It has been concluded that the almost single phase of brookite type titania was obtained after 54ks and 72ks ballmilling under the condition of medium intensity. It has been also found that the brookite obtained in this study shows almost the same photocatalytic activity as anatase.

Published
2001

239. Silicon vertex tracker for RHIC PHENIX experiment

Author

M. Kasai, Z. Li, E. T. Atomssa, O. Drapier, K. Boyle, C. Pancake, K. Nakano, E. Mannel, A. Taketani, A. Dion, V. Cianciolo, Y. Onuki, H. Pei, W. E. Sondheim, Y. Haki, K. Kurita, M. Kurosawa, N. Apdula, R. Ichimiya, Franck Gastaldi, R. Granier de Cassagnac, A. Deshpande, E Shafto, J. Kanaya, K. Hashimoto, A. Enokizono, K. Fujiwara, R. Pak, Alexandre Lebedev, M. Togawa, Y. Akiba, C. A. Ogilvie, A. Drees, and Rachid Nouicer

Subjects
Physics, Nuclear and High Energy Physics, Vertex (computer graphics), Particle physics, Silicon, Proton, Physics::Instrumentation and Detectors, Detector, chemistry.chemical_element, Charged particle, Nuclear physics, Particle decay, chemistry, Nuclear Experiment, Relativistic Heavy Ion Collider, Instrumentation, Beam (structure)
Abstract

The PHENIX experiment at Relativistic Heavy Ion Collider will be equipped with Silicon Vertex tracker to enhance its physics capability. There are four layers of silicon sensor to reconstruct charged tracks with 50 μ m resolution of decay length measurement. The VTX surrounds the collision point. The inner two layers and the outer two layers are composed of 30 pixel ladders and 44 stripixel ladders, respectively. We have been developing these detectors and done a performance test with 120 GeV proton beam.

Published
2010

240. Metal oxides immobilized fabrics by radiation induced graft polymerization

Author

T. Masubuchi, M. Shiozawa, T. Takato, H. Harakawa, K. Miyata, and K. Fujiwara

Subjects
chemistry.chemical_classification, Radiation, Ozone, Materials science, Nonwoven fabric, technology, industry, and agriculture, Nanoparticle, chemistry.chemical_element, Polymer, Manganese, Metal, chemistry.chemical_compound, chemistry, Polymerization, Chemical engineering, visual_art, visual_art.visual_art_medium, Organic chemistry, Volatile organic compound
Abstract

Radiation induced graft polymerization is effective for adding a new functionality to various forms of existing polymers. Ion-exchange nonwoven fabrics by gamma radiation induced graft polymerization have been used as filters in air and liquid. However, these materials have no capability for removing non-ionic species, such as volatile organic compound and ozone. Manganese oxides immobilized fabrics were developed for removing ozone. In addition, these materials were capable of removing formaldehyde and arsenic. Fine particles of manganese oxides were observed on the fibers. New materials produced by radiation induced graft polymerization and metal immobilization were applicable for purification of contaminants in environment. Manufacturing process is applicable for immobilization of the other metal oxides.

Published
2010

241. Azimuthal anisotropy ofπ0andηmesons in Au + Au collisions atsNN=200GeV

Author

B. Komkov, Norio Saito, M. A. L. Leite, R. Belmont, J. S. Kapustinsky, V. Babintsev, I. Tserruya, Yu. Efremenko, G. S. Kyle, James Alexander, R. Averbeck, Byung-Sik Hong, A. Bazilevsky, C. M. Camacho, Philippe Rosnet, Alexandre Lebedev, D. M. Lee, S. Dairaku, K. Kiriluk, A. Yu. Semenov, E. H. Kim, Maya Hachiya Shimomura, R. A. Soltz, C. Silvestre, V. Singh, Prashant Shukla, K. B. Lee, S. F. Pate, B. Azmoun, A. Král, Y. I. Makdisi, S. Afanasiev, R. S. Towell, K. A. Drees, S. N. White, D. Kawall, M. Grosse Perdekamp, M. E. Connors, M. Virius, Marisilvia Donadelli, V. Bumazhnov, H. Al-Bataineh, J. Newby, M. J. Tannenbaum, H. Themann, I. Garishvili, F. Wei, M. Chiu, Sung Keun Park, M. Oka, N. N. Ajitanand, H. Torii, R. Tanabe, A. K. Purwar, K. Fujiwara, K. N. Barish, Eunja Kim, C. A. Ogilvie, Kisung Lee, T. K. Hemmick, Zvi Hirsh Citron, A. Dion, J. M. Durham, Yasuo Miake, V. S. Pantuev, Kyeongpil Lee, J. Ide, Alexei Khanzadeev, C. H. Chen, Takahiro Nakamura, K. Nakano, M. Ouchida, L. Kochenda, M. Issah, K. Tanida, J. P. Wood, K. Das, D. Roach, K. M. Kijima, S. Yokkaichi, W. E. Sondheim, D. Ivanischev, A. Enokizono, P. Liebing, N. Means, Alice Mignerey, D. Hornback, Susumu Oda, Alexander Milov, I. Nakagawa, R. Luechtenborg, Y. L. Yamaguchi, E. P. Hartouni, E. Stenlund, C. Y. Chi, A. Glenn, T. Engelmore, V. Papavassiliou, K. Boyle, I. Ravinovich, P. A. Rukoyatkin, Martin Purschke, C. A. Aidala, J. Hamblen, A. Durum, J. Murata, O. Drapier, Frank Ellinghaus, Peter Christiansen, K. Watanabe, T. Ichihara, D. Winter, D. Yu Peressounko, E. R. Kinney, Takao Sakaguchi, S. Sano, D. P. Morrison, K. Shoji, C. Baumann, S. Kametani, S. Campbell, A. Taranenko, P. Tarján, A. D. Frawley, K. Yamaura, R. Pak, Y. J. Mao, C. P. Singh, E. Leitner, Kazushi Miki, Takahiro Fusayasu, B. M. Johnson, M. Bai, S. Huang, Rushan Han, Tatsuya Chujo, N. Kamihara, A. Morreale, Xingguo Li, Brajesh K. Singh, Alexander Malakhov, T. Horaguchi, Jen-Chieh Peng, A. Isupov, J. H. Kang, J. S. Haggerty, C. L. Woody, A. Berdnikov, D. Silvermyr, P. W. Stankus, K. Okada, Hongfang Liu, D. E. Fields, W. Holzmann, Z. Fraenkel, B. V. Jacak, Vladimir Samsonov, J. Sziklai, Gerd Joachim Kunde, L. S. Zolin, T. V. Moukhanova, H. W. Van Hecke, A. Drees, Brian Cole, Inkyu Park, Xiong Wang, R. K. Choudhury, M. L. Brooks, W. J. Park, Christopher Rosen, H. En'yo, Senta Greene, P. Chung, K. S. Joo, M. Kurosawa, Dong Jo Kim, S. P. Sorensen, I. Shein, S. Tarafdar, M. J. Leitch, A. T. Basye, S. Sawada, M. McCumber, K. Sakashita, E. J. Desmond, A. Yanovich, J. Ying, A. Veicht, B. Love, M. Togawa, E. Vazquez-Zambrano, Tamas Ferenc Csorgo, A. Franz, Zhiying You, B. Fadem, E. O'Brien, O. Chvala, A. Kiss, J. Park, Eva Haslum, B. Lenzi, R. Bennett, M. Kawashima, A. Rakotozafindrabe, I. V. Sourikova, B. Meredith, Henner Buesching, J. L. Nagle, Steve Edwards, K. Sedgwick, Jason Kamin, Seong H. Kim, S. Esumi, D. Sharma, A. V. Kazantsev, M. Finger, Y. Tsuchimoto, S. P. Stoll, T. L. Thomas, Y. S. Lai, John Hill, Y. Ikeda, J. Jin, R. Ichimiya, A. Deshpande, A. Datta, Jongmin Lee, E. M. Takagui, J. G. Lajoie, J. Hanks, Y. J. Kwon, Ryugo S. Hayano, H. Qu, A. G. Litvinenko, I. E. Yushmanov, S. S.E. Rosendahl, G. Bunce, Toru Sugitate, L. Tomášek, R. Vértesi, P. Mikeš, Marcus Hohlmann, Y. Riabov, D. Lynch, Ajit Kumar Mohanty, Kenta Shigaki, Hideki Hamagaki, K. Aoki, D. Jouan, T. A. Shibata, T. Sato, C. Pinkenburg, M. Nguyen, François Fleuret, I. J. Choi, A. Kravitz, G. David, K. I. Hahn, A. Taketani, A. S. Nyanin, D. S. Jumper, A. Kozlov, J. E. Frantz, Y. Watanabe, M. Gonin, D. Kotchetkov, Rachid Nouicer, M. Proissl, T. Dahms, L. A. Linden Levy, R. Seto, T. C. Awes, Kyoichiro Ozawa, T. Liška, G. Roche, I. Younus, J. S. Bok, D. Isenhower, A. Toia, T. Kempel, I. Danchev, Taku Gunji, H. Gong, J. Seele, X. He, Dong-Hun Kim, M. Naglis, F. Kajihara, C. L. Silva, Y. Aramaki, V. Peresedov, A. Sukhanov, K. Kurita, H. Pereira, Masayasu Ishihara, S. Butsyk, S. Bathe, Agneta Oskarsson, S. Zhou, J. Koster, M. Wysocki, S. D. Rolnick, Y. Morino, H. Masui, A. A. Bickley, Minghui Liu, Y. Berdnikov, Y. Akiba, M. Mishra, S. Nagamiya, Vaclav Vrba, Klaus Johannes Reygers, Rui Wei, M. Heffner, Kenneth Francis Read, Tadaaki Isobe, P. L. McGaughey, Y. Fukao, Y. Nakamiya, T. Hester, G. Baksay, B. Sahlmueller, Y. J. Kim, F. Matathias, Kensuke Homma, E. Richardson, P. Constantin, N. A. Sparks, B. Bassalleck, M. Konno, J. T. Mitchell, R. Seidl, Vladislav Manko, M. Slunečka, S. Belikov, N. Grau, C. Vale, M. I. Nagy, Motoi Inaba, R. M. Wright, Mate Csanad, D. Watanabe, R. P. Pisani, M. D. Malik, E. Vznuzdaev, Charles Maguire, Y. Onuki, E. Kistenev, H. Pei, Jan Rak, R. Lacey, Johannes Peter Wessels, R. Granier de Cassagnac, W. A. Zajc, A. Adare, V. Baublis, A. Denisov, V. Cianciolo, Sergey Fokin, Beomkyu Kim, H. A. Gustafsson, Wei Xie, Y. Tanaka, E. Mannel, K. Karatsu, C. Zhang, L. Baksay, P. Ružička, Anne Marie Sickles, Viktor Riabov, G. R. Young, K. S. Sim, R. Yang, K. Imai, M. Rosati, A. A. Vinogradov, Jiangyong Jia, Y. Goto, O. Dietzsch, E. T. Atomssa, H. Valle, Dipanwita Dutta, and Julia Velkovska

Subjects
Physics, Nuclear and High Energy Physics, Range (particle radiation), Meson, 010308 nuclear & particles physics, Elliptic flow, 01 natural sciences, Nuclear physics, Azimuth, Viscosity, 0103 physical sciences, Transverse momentum, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics, Relativistic Heavy Ion Collider, Anisotropy
Abstract

The azimuthal anisotropy coefficients v2 and v4 of p 0 and. mesons are measured in Au + Au collisions at root s(NN) = 200 GeV as a function of transverse momentum p(T) (1-14 GeV/c) and centrality. The extracted v(2) coefficients are found to be consistent between the two meson species over the measured p(T) range. The ratio of v(4)/v(2)(2) for pi(0) mesons is found to be independent of p(T) for 1- 9 GeV/c, implying a lack of sensitivity of the ratio to the change of underlying physics with p(T). Furthermore, the ratio of v(4)/v(2)(2) is systematically larger in central collisions, which may reflect the combined effects of fluctuations in the initial collision geometry and finite viscosity in the evolving medium.

Published
2013

242. Oral cancer screening as an integral part of general health screening in Tokoname City, Japan

Author

K Fujiwara, Hideo Miyazaki, Saman Warnakulasuriya, Hideo Fukano, Toru Nagao, and Noriaki Ikeda

Subjects
Adult, Male, Pediatrics, medicine.medical_specialty, Alcohol Drinking, Referral, Population, Sex Factors, Japan, medicine, Humans, Mass Screening, Urine examination, Self administered questionnaire, education, Mass screening, Aged, education.field_of_study, Oral cancer screening, business.industry, Health Policy, Smoking, Age Factors, Mouth Mucosa, Public Health, Environmental and Occupational Health, Attendance, Middle Aged, Female, Mouth Neoplasms, General health, business
Abstract

Objectives To measure the attendance and compliance rates in oral mucosal screening (OMS) offered as part of a general health screen (GHS) undertaken as an organised programme in Japan. Methods In 1996, all adults over the age of 40 years resident in Tokoname City were invited by letter to attend a free GHS annually, conducted by the municipal cooperation and the medical and dental societies of Tokoname City. In the later years only those who attended in 1996 were reinvited. Females aged less than 39 years were also allowed to attend if they wished to participate in the GHS. The GHS consisted of completion of a self administered questionnaire to identify past and current illnesses and any medications used by the screened population coupled with a routine physical check, chest x ray, ECG, and blood and urine examination. The GHS was programmed annually during the years 1996 to 1998. All those attending the GHS were invited to participate in an OMS conducted under the same roof by a visiting dentist (n=37). A referral pathway was established for screen positives requiring follow up. Results A total of 19 305 subjects (5955 males, 13 350 females; mean age 59.2 years; 7033 in 1996, 6289 in 1997, and 5983 in 1998) attended the GHS. Of those who attended the GHS, 19 056 (98.7%) attended the OMS (1.3% refused). This rate was fairly constant over the three years. Excluding repeat examinations, new cases recruited for OMS over the three years were 8723. Of those participating in OMS, 4269 (60.7%) attended all three years. In the cohorts examined, screening dentists recorded oral mucosal lesions in 5.4% in 1996, in 4.0% in 1997, and in 2.6% in 1998. Overall, this amounted to a positive detection rate of 4.1%, or 4.9% excluding repeat examinations. A higher prevalence of oral pre-cancer was recorded among male smokers. Conclusions The overall results suggest that although compliance with attending a free GHS was low (26.2%) among Japanese subjects over 40 years of age, of those who complied 74–76% reattended annually. Hence a satisfactory participation rate can be obtained in Japan for OMS when this is coupled to a GHS conducted at the same visit.

Published
2000

243. Kinetics of Heterogeneous Nucleation of n-Alcohol Crystals from Solution Assisted by Template Thin Films of Monoacylglycerols and Fatty Acids

Author

and S. Ueno, K. Fujiwara, Kiyotaka Sato, Junko Yano, and S. Nagahisa

Subjects
Supersaturation, Materials science, Kinetics, Nucleation, macromolecular substances, Decane, Surfaces, Coatings and Films, law.invention, Solvent, Crystallography, chemistry.chemical_compound, Template, chemistry, law, Materials Chemistry, Physical and Theoretical Chemistry, Crystallization, Thin film
Abstract

Kinetic measurements have been made on heterogeneous nucleation of long-chain n-alcohol crystals (herewith referred to as guest crystals) from solution, which was accelerated by the presence of vapor-deposited thin films (referred to as templates) of monoacylglycerols and long chain fatty acids. The host templates were put in slightly supersaturated solution (decane solvent), in which no crystallization occurred over several hours without the template films, yet the template films accelerated the crystallization within several minutes of induction times. The crystallization behavior was examined by microscopic observation and induction time measurements, with specific attention to the template−guest relationships in terms of polymorphism, molecular orientation, and chain length limitation. It was confirmed that the host template films of the monoacylglycerols and the fatty acids accelerated the nucleation of the n-alcohol crystals, exhibiting the polymorphic matching, preservation of the molecular orienta...

Published
2000

245. Problems in practical finite element analysis using Preisach hysteresis model

Author

K. Fujiwara, Norio Takahashi, and S.-H. Miyabara

Subjects
Preisach model of hysteresis, Physics, Condensed matter physics, Mathematical analysis, CPU time, Function (mathematics), finite element analysis, magnetic fields, magnetic hysteresis, Finite element method, Magnetic flux, Electronic, Optical and Magnetic Materials, Hysteresis, Distribution function, magnetic materials, Electrical and Electronic Engineering, Inverse distribution, magnetic flux
Abstract

An efficient method, which is called the “inverse distribution function method”, for calculating the magnetic field strength H from the flux density B through the Preisach model is developed. By using the method, H can be directly obtained without iteration from B which is calculated by the usual FEM, with the magnetic vector potential as an unknown variable. The effects of the dimension n of the inverse distribution function on the CPU time and the memory requirements are investigated through a numerical example by increasing the dimension n of the inverse distribution function. It is shown that the additional CPU time for taking account of hysteresis is negligible when n is less than about 200

Published
1999

246. Estimation of the Deterioration of Structural Materials on the Basis of Changes in Their Magnetization Properties during the Application of Tensile Stress

Author

M. Nakano, Akihiko Chiba, T. Ogawa, D. Ishihara, A. Kushibe, K. Fujiwara, K. Yamazaki, and N. Takahashi

Subjects
Stress (mechanics), Magnetization, Materials science, Structural material, Permeability (electromagnetism), Tensile strain, Electrical and Electronic Engineering, Composite material, Coercivity, Condensed Matter Physics, Instrumentation, Electronic, Optical and Magnetic Materials, Tensile testing
Abstract

In order to establish a nondestructive method of estimating residual strains induced in structural components for buildings, the magnetization properties of stress-imposed SS400 steel were measured, using a tensile tester equipped with a single sheet tester. In the elastic region, the permeability increases with increasing tensile stress and reaches a peak at the beginning of the plastic deformation, whereas the coercive force decreases with increasing stress. In the plastic region, as the applied stress increases, the permeability decreases, while the coercive force increases. Monotonic decrease and increase as functions of the tensile strain are observed in the permeability and the coercive force, respectively. These findings suggest that changes in the permeability and the coercive force with strains can be used for nondestructive estimation of deterioration of structural materials.

Published
1999

247. [Untitled]

Author

T. Yabuki, Akiyoshi Osaka, K. Fujiwara, Hideyuki Yoshimatsu, Koji Kawabata, and Yoshinari Miura

Subjects
chemistry.chemical_classification, Alkene, Mechanical Engineering, Catalyst support, Inorganic chemistry, Heterogeneous catalysis, Catalysis, Propene, chemistry.chemical_compound, Hydrocarbon, chemistry, Mechanics of Materials, Specific surface area, General Materials Science, Sol-gel
Abstract

The alumina-titania catalysts were prepared from various alumina and titania sources by sol-gel method, which were metal alkoxide and metal alkoxide modified with organic groups. Specific surface area, pore size distribution, solid acidity and catalytic activity of NO reduction for the alumina-titania catalysts depended on the alumina and titania sources. The alumina-titania catalyst prepared from metal alkoxide for alumina source and metal alkoxide modified with organic groups for titania source exhibited higher activity of NO reduction than the other alumina-titania catalysts. Catalytic activity of NO reduction for the alumina-titania catalysts depended on specific surface area and solid acidity. It was suggested that solid acidity of the alumina-titania catalysts depended on the coordination structure of Al atoms and the homogeneity of alumina and titania components.

Published
1999

248. [Untitled]

Author

S. Nakamura, K. Fujiwara, and M. Noguchi

Subjects
chemistry.chemical_compound, Equation of state, Dew point, Materials science, chemistry, Pentafluoroethane, Isochoric process, Vapor pressure, Thermodynamics, Vapor–liquid equilibrium, Bubble point, Condensed Matter Physics, Saturation (chemistry)
Abstract

An 18-coefficient modified Benedict–Webb–Rubin equation of state has been developed for R-404A, a ternary mixture of 44% by mass of pentafluoroethane (R-125), 52% by mass of 1,1,1-trifluoroethane (R-143a), and 4% by mass of 1,1,1,2-tetrafluoroethane (R-134a). Correlations of bubble point pressures, dew point pressures, saturated liquid densities, and saturated vapor densities are also presented. This equation of state has been developed based on the reported experimental data of PVT properties, saturation properties, and isochoric heat capacities by using least-squares fitting. These correlations are valid in the temperature range from 250 K to the critical temperature. This equation of state is valid at pressures up to 19 MPa, densities to 1300 kg·m−3, and temperatures from 250 to 400 K. The thermodynamic properties except for the saturation pressures are calculated from this equation of state.

Published
1999

249. Dynamic behavior of materials induced by explosive loadings initiated using wire explosion techniques

Author

Tetsuyuki Hiroe, K. Fujiwara, K Kusumegi, T Abe, T Katoh, and Hideo Matsuo

Subjects
Shock wave, Materials science, Explosive material, Plane (geometry), Astrophysics::High Energy Astrophysical Phenomena, Metals and Alloys, Detonation, Diagnostic tools, Spall, Industrial and Manufacturing Engineering, Computer Science Applications, Physics::Fluid Dynamics, High strain, Modeling and Simulation, Ceramics and Composites, Fracture (geology), Composite material
Abstract

Wire explosion techniques have been applied to produce two kinds of detonation waves—plane and cylindrically-diverging detonation waves—in powder PETN, supplying explosive loading for the study of the dynamic response of materials. The plane detonation waves are transferred to one-dimensional triangular-shaped pressure pulses in metal plate specimens, causing spall fracture. The cylindrically-diverging detonation waves are used to study the uniform expansion of steel cylinders at high strain rates. These dynamic behaviors are investigated using diagnostic tools and hydro codes.

Published
1999

250. Excitation energy transfer between dye molecules in lasing microparticles

Author

T. Takahashi, Hiroaki Misawa, K. Fujiwara, and S. Matsuo

Subjects
Chemistry, General Chemical Engineering, Analytical chemistry, Physics::Optics, General Physics and Astronomy, General Chemistry, Acceptor, Molecular physics, Förster resonance energy transfer, Picosecond, Excited state, Particle, Particle size, Physics::Chemical Physics, Ground state, Lasing threshold
Abstract

Energy transfer from excited state donor to ground state acceptor dyes in polymer microparticles with a diameter of 30–60 μm was observed under lasing condition. The energy transfer efficiency was found to be higher with the increasing size of the particle. This result indicates that the excitation energy transfer efficiency can be controlled by the particle size without varying temperature and dye concentration. The dynamics of energy transfer was observed through picosecond time-resolved emission spectral measurements.

Published
1999

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