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1. Prevalence and implications of exercise pulmonary hypertension in chronic thromboembolic pulmonary disease

Author

Y Naka, T Inami, K Takeuchi, H Kikuchi, A Goda, T Kohno, and K Soejima

Subjects
Cardiology and Cardiovascular Medicine
Abstract

Introduction Recent international statement on chronic thromboembolic pulmonary hypertension proposed the definition of chronic thromboembolic pulmonary disease (CTEPD) and advocated further research regarding its clinical characteristic, natural history, and therapeutic strategy. Exercise pulmonary hypertension (Ex-PH) has been considered a mild degree of pulmonary hypertension (PH) among patients with normal pulmonary hemodynamics at rest. However, the clinical significance of Ex-PH in CTEPD remains unknown. Purpose In the patients with CTEPD, we aimed to verify 1) the prevalence and clinical profiles of Ex-PH, 2) effect of BPA on pulmonary vascular response after exercise in Ex-PH, 3) long-term clinical outcomes of conservative management in non-Ex-PH. Methods We retrospectively reviewed 26 patients with CTEPD (median age 65 years, 38% male), who underwent cardiopulmonary exercise test with right heart catheterization (CPET-RHC). The definitions of CTEPD are the following 1) pulmonary artery occlusion due to organic thrombus confirmed by imaging studies after ≥3 months of anticoagulation, 2) mPAP3.0, and the patients were divided into Ex-PH and non-Ex PH groups. Clinical profiles and long-term outcomes were compared between two groups. The patients in Ex-PH groupunderwent CPET-RHC 6–12 months after balloon pulmonary angioplasty (BPA). In Non-Ex-PH group, serial measurements of echocardiography were performed. Results Overall, 5 and 21 patients were categorized as CTEPD with PH (mPAP 21–24mmHg) and without PH (mPAP≤20mmHg), and 14 and 12 were categorized Ex-PH and non-Ex-PH groups, respectively. Although all 5 patients with CTEPD with PH were classified as Ex-PH group (Figure 1), there was no significant difference in baseline hemodynamics at rest between Ex-PH and non-Ex-PH groups (mPAP: 19.5 [18.4–20.6] vs. 17.7 [16.6–18.9] mmHg, PVR: 2.2 [1.7–2.7] vs. 2.3 [1.9–2.8] wood units, P>0.05, respectively). PQ slope was significantly higher in Ex-PH group (4.6 [3.2–6.0] vs. 1.31 [0.2–2.8], p=0.002). There were no differences in respiratory function test, blood gas analysis, and 6-minute walk distance between two groups. There were no major adverse events such as all-cause mortality and hospitalization for PH in overall cohort. Among Ex-PH group, BPA decreased PQslope (4.8 [3.6–6.4] to 2.3 [1.9–3.0], p0.05) over the 997 [651–1451] days. Conclusion Ex-PH was common in patients with CTEPD, and there were no clinical profiles differentiating Ex-PH from non-Ex-PH, except parameters of CPET-RHC. BPA improved an abnormal pulmonary vascular response to exercise in Ex-PH. The conservative management in non-Ex-PH was feasible. Randomized clinical trials will be needed to further investigate this treatment strategy. Funding Acknowledgement Type of funding sources: None.

Published
2022
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5. De-escalation/discontinuation of oxygen-therapy and medication is feasible and safe in chronic thromboembolic pulmonary hypertension patients treated with balloon pulmonary angioplasty

Author

M Kimura, T Kohno, T Kawakami, T Shinya, T Hiraide, H Moriyama, M Kataoka, J Endo, Y Itabash, M Mitsushige, and K Fukuda

Subjects
medicine.medical_specialty, business.industry, medicine.medical_treatment, Balloon, Discontinuation, Oxygen therapy, Angioplasty, Internal medicine, medicine, Cardiology, Chronic thromboembolic pulmonary hypertension, Cardiology and Cardiovascular Medicine, business, De-escalation
Abstract

Introduction There has been increasing evidence of the efficacy of balloon pulmonary angioplasty (BPA) in improving the hemodynamics, exercise capacity, and biomarkers of patients with chronic thromboembolic pulmonary hypertension (CTEPH). However, there is no consensus on the adjustment of home oxygen therapy (HOT) and pulmonary hypertension (PH)-specific medications after BPA in patients with CTEPH. Purpose We aimed to examine the current status of the de-escalation/discontinuation of HOT and PH-specific medications post-BPA, and clarify its effect on subsequent hemodynamics, biomarkers, and long-term clinical outcomes. Methods and results From November 2012 to July 2019, 134 consecutive CTEPH patients who underwent BPA at a single university hospital were enrolled (age; 63.6±13.4 years, female; n=87 [64.9%], WHO functional class [WHO-FC] II/III/IV; 33/92/9). Hemodynamic data, functional capacity (6-minute walk distance and WHO-FC), biomarkers (brain natriuretic peptide [BNP] and high-sensitivity troponin T [hs-TropT]), and respiratory function were evaluated at baseline, immediately and 1 year post-BPA. Clinical outcomes (all-cause death and heart failure [HF] admission) were also assessed during the follow up period. The total number of sessions was 6.3±2.0, and the number of target vessels was 14.3±2.0. Mean pulmonary arterial pressure decreased from 37.8±11.2 to 20.4±5.1 mmHg 1-year after BPA (p Conclusions Most CTEPH patients discontinued HOT and PH-specific combination medical therapy after BPA, which was not associated with the deterioration of hemodynamics, functional capacity, or biomarkers. No adverse long-term outcomes were observed. De-escalation/discontinuation of HOT and PH-specific combination medical therapy after BPA is feasible and safe for patients with CTEPH. De-escalation of HOT and medical therapy Funding Acknowledgement Type of funding source: None

Published
2020
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6. Efficacy and outcomes of balloon pulmonary angioplasty in elderly vs non-elderly chronic thromboembolic pulmonary hypertension patients

Author

Y Shinya, M Kimura, T Kawakami, T Hiraide, H Moriyama, M Kataoka, J Endo, Y Itabashi, M Murata, T Kohno, and K Fukuda

Subjects
Spirometry, medicine.medical_specialty, Lung, medicine.diagnostic_test, business.industry, medicine.medical_treatment, Hemodynamics, Respiratory physiology, medicine.disease, Balloon, Pulmonary embolism, Pulmonary function testing, medicine.anatomical_structure, Angioplasty, Internal medicine, Cardiology, Medicine, Cardiology and Cardiovascular Medicine, business
Abstract

Introduction Balloon pulmonary angioplasty (BPA) has been reported as an effective and safe treatment for patients with chronic thromboembolic pulmonary hypertension (CTEPH). However, its safety and efficacy in elderly patients remains unknown. Purpose We investigated the effect of BPA on hemodynamics and respiratory parameters, functional capacity, and short- and long-term outcome in elderly patients. Methods From November 2012 to May 2018, 141 consecutive CTEPH patients who underwent BPA in a single university hospital were enrolled (age: 65 [54.5–74] years old, WHO functional class [WHO-FC] II/III/IV; 35/96/10). Patients were divided into two groups according to the age; elderly (≥75 years, N=32) and young groups ( Results At baseline, although elderly group had less severe hemodynamics (mPAP: 33.1±6.7 vs 39.0±11.8 mmHg, p Conclusion BPA was effective in improving hemodynamics and respiratory parameters and functional capacity, in associated with no critical complication, regardless of the age. Elderly patients who were treated with BPA were associated with higher incidence of non-PH-related death. Changes of mean PAP in the two groups Funding Acknowledgement Type of funding source: None

Published
2020
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9. Deep learning with a convolutional neural network algorithm for automated detection of urinary tract stones using abdominal X-ray image

Author

Kazutaka Saito, R. Saiki, Y. Matsuoka, Sho Uehara, M. Fujiwara, Minato Yokoyama, T. Kijima, Junichiro Ishioka, K. Kawano, Naoko Kawamura, Y. Fukuda, Yasuhisa Fujii, Tetsuo Okuno, Yosuke Yasuda, T. Kohno, Soichiro Yoshida, M. Kobayashi, Shinji Morimoto, and I. Kumazawa

Subjects
business.industry, Urology, Deep learning, X ray image, Urinary tract stones, Medicine, Pattern recognition, Artificial intelligence, business, Convolutional neural network
Published
2019
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10. Abnormal neutrophil scattergram obtained using Pentra MS CRP in the patients with myelodysplastic syndrome showing dysgranulopoiesis

Author

K. Saito, Yumiko Fujitomo, S. Yuasa, Katsutoshi Ishizuka, T. Kohno, K. Ogura, Tohru Inaba, N. Mishima, Masaki Nakanishi, and Naohisa Fujita

Subjects
Male, medicine.medical_specialty, Pathology, Neutrophils, Clinical Biochemistry, Leukocyte Count, 03 medical and health sciences, chemistry.chemical_compound, 0302 clinical medicine, Internal medicine, White blood cell, Humans, Medicine, Aged, Aged, 80 and over, Myelopoiesis, Abnormal Neutrophil, Hematology, business.industry, Myelodysplastic syndromes, Biochemistry (medical), General Medicine, Middle Aged, medicine.disease, Peripheral blood, Staining, medicine.anatomical_structure, chemistry, Myelodysplastic Syndromes, 030220 oncology & carcinogenesis, Cytochemistry, Female, Sudan Black B, business, Granulocytes, 030215 immunology
Abstract

Summary Introduction Pentra MS CRP is an automated hematology analyzer capable of cytochemistry using Chlorazol black E, a lipid-staining agent, for white blood cell (WBC) differentials. Pentra MS CRP displays a WBC scattergram according to the cell volume obtained using flow impedance and light absorbance reflecting the Chlorazol black E (CBE)-positive lipid content. Method Neutrophil scattergrams obtained using Pentra MS CRP were compared between 5 patients with myelodysplastic syndrome (MDS) and normal controls. Sudan black B (SBB)-staining patterns of peripheral blood neutrophils were subdivided into four types (types I, II, III, and VI) based on their staining intensity and scored by counting 200 cells. Such SBB scores were also compared between the two groups. Results Neutrophil scattergrams deviated downward in the MDS group, suggesting the decreased CBE positivity that seemed reflect the reduction of the lipid content in dysplastic neutrophils. SBB scores determined in this study were also decreased in the MDS group when compared with those in normal controls. Conclusion Pentra MS CRP might rapidly generate useful information on dysplastic neutrophils in patients with MDS based on its cytochemistry for WBC differentials during routine laboratory hematology.

Published
2015
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11. Does HMGB1 predict occult neck lymph node metastasis in early tongue carcinoma? A case–control study of 26 patients

Author

Yasuharu Sato, Hitoshi Nagatsuka, T Kohno, Soshi Takao, Yorihisa Orita, Masahiro Nishibori, Mai Takeuchi, Ryo Tamamura, Noriko Iwaki, Kyotaro Ohno, Tadashi Yoshino, Kazunori Nishizaki, Hiroyuki Hanakawa, and Hidenori Marunaka

Subjects
Adult, Male, Oncology, medicine.medical_specialty, chemical and pharmacologic phenomena, Metastasis, Tongue, Internal medicine, Tongue Carcinoma, medicine, Carcinoma, Humans, HMGB1 Protein, Aged, Aged, 80 and over, business.industry, Case-control study, General Medicine, Odds ratio, Middle Aged, medicine.disease, Immunohistochemistry, Occult, Tongue Neoplasms, medicine.anatomical_structure, Otorhinolaryngology, Case-Control Studies, Lymphatic Metastasis, Carcinoma, Squamous Cell, Female, Lymph Nodes, business
Abstract

Objective:This study examined whether the occurrence of late neck metastasis in early tongue squamous cell carcinoma can be predicted by evaluating HMGB1 (high mobility group box 1) expression in the primary lesion.Methods:A case–control study was conducted. The cases comprised 10 patients with late neck metastasis. The controls consisted of 16 patients without recurrence. All were examined immunohistochemically for HMGB1 protein expression. The odds ratio for late neck metastasis in relation to HMGB1 was estimated.Results:Results for HMGB1 were dichotomised into positive staining scores (score, 5–7) and negative scores (0–4). Six cases (60 per cent) and four controls (25 per cent) were HMGB1-positive. Although no significant result was seen, compared with HMGB1-negative patients the odds ratio for late neck metastasis in HMGB1-positive patients was 3.8 (95 per cent confidence interval, 0.6–26.5) after adjusting for other factors.Conclusion:In the present study, immunohistochemical study of HMGB1 in early tongue squamous cell carcinoma did not appear to be very useful for predicting occult neck metastasis. Further study is necessary to clarify the relationship between HMGB1 expression and late neck metastasis in early tongue squamous cell carcinoma.

Published
2014
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12. Preparation and characterization of sputtered aluminum and gallium co-doped ZnO films as conductive substrates in dye-sensitized solar cells

Author

Devinda Liyanage, Takuya Kitaoka, Motoi Nakao, Boateng Onwona-Agyeman, Kenji Murakami, and T. Kohno

Subjects
Materials science, business.industry, General Chemical Engineering, chemistry.chemical_element, General Chemistry, Substrate (electronics), Industrial and Manufacturing Engineering, law.invention, Dye-sensitized solar cell, chemistry, law, Sputtering, Solar cell, Cavity magnetron, Environmental Chemistry, Optoelectronics, Gallium, Thin film, business, Visible spectrum
Abstract

Aluminum and gallium co-doped zinc oxide (GAZnO) films were deposited on borosilicate glass substrates by radio frequency (rf) magnetron technique. The effects of substrate temperature on the structural, optical and electrical properties of the sputtered films were investigated. X-ray diffraction measurement revealed mixed orientations for films prepared at low substrate temperatures, while films prepared at high temperatures were oriented mainly along the (0 0 2) direction. Optical transmittance data indicated that the transparency of all the films was above 80% within the visible spectrum, while the electrical resistivity and mobility were improved with increasing substrate temperatures reaching maximum values at 350 °C. Finally, using GAZnO films prepared at 300 °C and 350 °C as transparent conductive substrates in a solar cell sensitized with a metal-free organic dye, light-to-electrical energy conversion efficiency of 3.5 and 3.7% under AM 1.5 irradiation (1000 W m −2 simulated sunlight) was recorded, respectively.

Published
2013
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13. Protonation Behavior and Solution Properties of Amine Oxide Surfactants Containing a Pyridyl Group

Author

Shingo Yamamura, T. Kohno, Göran Karlsson, Rie Kakehashi, Tokai Naoji, and Yohji Nakatsuji

Subjects
chemistry.chemical_classification, Molecular Structure, Pyridines, Hydrogen bond, General Chemical Engineering, Substituent, Hydrogen Bonding, Oxides, Protonation, General Medicine, General Chemistry, Photochemistry, Micelle, Amine oxide, Solutions, Surface-Active Agents, chemistry.chemical_compound, Deprotonation, chemistry, Critical micelle concentration, Polymer chemistry, Amines, Protons, Alkyl
Abstract

Hydrogen bonding between surfactant molecules plays an important role in self-assembly formation. For long alkyl chain amine oxide surfactants, the specific protonation degree dependence of some solution properties has been considered to be due to hydrogen bonding between protonated and deprotonated species. In addition to this type of hydrogen bonding, we introduced a pyridyl group into an alkylamine oxide molecule as a new hydrogen-bonding site. The pyridyl group has three different structural isomers based on the position of the substituent. An amine oxide group in pyridylamine oxides was preferentially protonated. In addition, protonation of the pyridyl group revealed a pronounced substituent position effect on the critical micelle concentration, micellar size, and solubilization of oil-soluble dye into micelles. The intermolecular or intramolecular hydrogen bond formation could be controlled by altering the substituent position.

Published
2013
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14. Study on the Bleeding Mechanism of Slip Agents in a Polypropylene Film using Molecular Dynamics

Author

T. Kohno, Toshitaka Kanai, M. Wakabayashi, and Yohsuke Tanaka

Subjects
Polypropylene, Ethylene, Materials science, Polymers and Plastics, Hydrogen bond, General Chemical Engineering, Slip (materials science), Industrial and Manufacturing Engineering, Amorphous solid, Molecular dynamics, chemistry.chemical_compound, chemistry, Chemical engineering, Tacticity, Polymer chemistry, Materials Chemistry, Behenic acid
Abstract

The bleeding (internal transport) process of additives in a polypropylene film under atmospheric pressure was investigated. The experimental results were explained more precisely by a new model assuming the two-step transport between the amorphous and crystalline regions. The diffusion coefficient of a higher fatty acid such as behenic acid (docosanoic acid) in isotactic polypropylene film and that of higher fatty acid amides such as erucamaide (13-cis-docosenamide) in ethylene copolymerized polypropylene film were determined at 40 and 50°C respectively. The difference between the diffusion coefficients of three slip agents in a polypropylene film at 50°C was explained using a molecular dynamics simulation in which self-association of the slip agent molecules by hydrogen bonding was considered.

Published
2009
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15. Improvement of Thermal Fatigue Properties of Sn-Ag-Cu Lead-Free Solder Interconnects on Casio’s Wafer-Level Packages Based on Morphology and Grain Boundary Character

Author

T. Wakabayashi, A. Mizusawa, T. Kohno, Shinichi Terashima, Kohei Tatsumi, O. Okada, M. Tanaka, and K. Arai

Subjects
Materials science, Morphology (linguistics), Solid-state physics, Metallurgy, chemistry.chemical_element, Condensed Matter Physics, Electronic, Optical and Magnetic Materials, Character (mathematics), chemistry, Soldering, Microscopy, Materials Chemistry, Wafer, Grain boundary, Electrical and Electronic Engineering, Tin
Abstract

Thermal fatigue properties of commercial LF35 (Sn-1.2Ag-0.5Cu-0.05Ni), SAC105 (Sn-1Ag-0.5Cu), and SAC305 (Sn-3Ag-0.5Cu) solders on Casio’s wafer-level packages are discussed from the viewpoints of both morphology and grain boundary character. Orientation imaging microscopy revealed that both LF35 and SAC305 resisted the coarsening of tin grains during thermal fatigue as compared with SAC105, correlating with their greater fraction of coincidence site lattice boundaries. This seems to explain why LF35 has superior thermal fatigue life in spite of its lower silver content.

Published
2008
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16. The ATLAS level-1 trigger: Status of the system and first results from cosmic-ray data

Author

Gabriele Chiodini, Thomas Trefzger, Hans-Christian Schultz-Coulon, F.C. Pastore, Gianpaolo Carlino, Barbara Liberti, T. Sugimoto, M. Dogaru, S. Patricelli, A. R. Gillman, Stephen Hillier, A. Di Mattia, J. R.A. Booth, D. Boscherini, N. Kanaya, T. Niwa, N. Lupu, A. Salamon, M. Bendel, P. Gallno, D. De Pedis, Yorito Yamaguchi, Uli Schäfer, Claudio Luci, Kunihiro Nagano, Enrico Pasqualucci, Paolo Iengo, Vincenzo Izzo, V. Lendermann, S. Ask, E. E. Woehrling, B. Bauss, P. M. Watkins, P. Adragna, Alan Watson, C. J. Curtis, David Berge, Kiyotomo Kawagoe, F. Grancagnolo, O. Bahat Treidel, S. Constantin, T. Kobayashi, H. Pessoa Lima, D. DellaVolpe, Yoji Hasegawa, S. Bressler, M. Biglietti, Yasuyuki Okumura, Stefano Veneziano, M. Perantoni, D. P. F. Prieur, Nicolas Ellis, Johannes Haller, Hiroyuki Iwasaki, R. Santonico, L. Zanello, Erez Etzion, S. I. Buda, T. Kadosaka, R. DeAsmundis, A. Roich, G. Ciapetti, R. Perrino, Tohru Takeshita, G. Mahout, D. Caracinha, Anna Rita Migliaccio, Shlomit Tarem, R. Achenbach, A.O. Davis, A. Hidvegi, Samuel Silverstein, V.J.O. Perera, Paolo Camarri, Stefan Tapprogge, H. Oshita, Giulio Aielli, F. Spila, H. Takeda, Yuta Takahashi, I.P. Brawn, Masaya Ishino, H. Kiyamura, R. Lifshitz, E. Eisenhandler, Vincenzo Canale, Enrique Kajomovitz, Yorihito Sugaya, Francesco Conventi, Paul Hanke, Lorne Levinson, Emilio Petrolo, Aleandro Nisati, C. N. P. Gee, M.R. Coluccia, K. Mahboubi, M. Johansen, Stefania Spagnolo, Giora Mikenberg, H. Nomoto, S. Antonelli, Thilo Pauly, Hiroshi Sakamoto, T. Kohno, Michele Bianco, T. Kawamoto, Rainer Stamen, F. Föhlisch, Roberto Cardarelli, A. Polini, Daniel Lellouch, Alberto Aloisio, P. Klofver, J. P. Thomas, Murrough Landon, M. DellaPietra, A. DiCiaccio, T. Kuwabara, C. Omachi, W. Qian, Riccardo Vari, Margherita Primavera, Mitsuaki Nozaki, Osamu Sasaki, P.J.W. Faulkner, K. Meier, Attila Krasznahorkay, Chikara Fukunaga, Mariagrazia Alviggi, F. Marchese, C. Geweniger, R.J. Staley, Masahiro Ikeno, Dave Charlton, E. E. Kluge, Sten Hellman, A. Di Girolamo, R. Spiwoks, V. Andrei, Masaharu Nomachi, P. Giusti, Makoto Tomoto, P. Weber, A. Bruni, Christian Ohm, Y. Benhammou, Satoshi Tanaka, M. Pectu, Edoardo Gorini, Givi Sekhniaidze, K. Schmitt, Frederik Rühr, L. Bellagamba, C. Bohm, Takashi Kubota, S. Haas, G. Schuler, Hisaya Kurashige, Yoshiji Yasu, Atsuhiko Ochi, G. Bruni, Dave Sankey, S. Rieke, P. Farthouat, Bruce Barnett, S. Ben Ami, Stefano Rosati, J.M. de Seixas, E. Solfaroli, Thorsten Wengler, Giuseppe Iacobucci, Aielli, G, Andrei, V, Achenbach, R, Bianco, Michele, Primavera, Margherita, Spagnolo, Stefania Antonia, Gorini, Edoardo, G., Aielli, V., Andrei, R., Achenbach, P., Adragna, Aloisio, Alberto, Alviggi, Mariagrazia, S., Antonelli, S., Ask, B., Barnett, B., Bau, Canale, Vincenzo, DELLA VOLPE, Domenico, and Patricelli, Sergio

Subjects
Nuclear and High Energy Physics, Physics - Instrumentation and Detectors, Physics::Instrumentation and Detectors, Atlas detector, atlas, cosmic-ray data, installation and commissioning, trigger system, FOS: Physical sciences, Cosmic ray, Nuclear physics, Software, Atlas (anatomy), medicine, Detectors and Experimental Techniques, Instrumentation, Physics, Large Hadron Collider, Luminosity (scattering theory), business.industry, Settore FIS/01 - Fisica Sperimentale, Detector, Instrumentation and Detectors (physics.ins-det), medicine.anatomical_structure, Physics::Accelerator Physics, Granularity, business
Abstract

The ATLAS detector at CERN's Large Hadron Collider (LHC) will be exposed to proton-proton collisions from beams crossing at 40 MHz. At the design luminosity of 10^34 cm^-2 s^-1 there are on average 23 collisions per bunch crossing. A three-level trigger system will select potentially interesting events in order to reduce the read-out rate to about 200 Hz. The first trigger level is implemented in custom-built electronics and makes an initial fast selection based on detector data of coarse granularity. It has to reduce the rate by a factor of 10^4 to less than 100 kHz. The other two consecutive trigger levels are in software and run on PC farms. We present an overview of the first-level trigger system and report on the current installation status. Moreover, we show analysis results of cosmic-ray data recorded in situ at the ATLAS experimental site with final or close-to-final hardware., Contribution to the 11th Vienna Conference on Instrumentation (2007), 12 pages, 6 figures, accepted for publication in the proceedings in NIM A

Published
2007
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17. Crystal structure and hydrogen storage properties of La–Mg–Ni–Co alloy with superstructure

Author

Kohta Asano, Hirotoshi Enoki, Y.J. Chai, Etsuo Akiba, Kouji Sakaki, and T. Kohno

Subjects
Diffraction, Materials science, Hydrogen, Mechanical Engineering, Alloy, Metals and Alloys, chemistry.chemical_element, Crystal structure, engineering.material, Condensed Matter Physics, Crystallography, Hydrogen storage, chemistry, Mechanics of Materials, Phase (matter), engineering, General Materials Science, Dehydrogenation, Superstructure (condensed matter)
Abstract

The crystal structure and hydrogen storage properties of the alloys La0.67Mg0.33Ni2.5Co0.5, La0.7Mg0.3Ni2.8Co0.5 and La0.75Mg0.25Ni3.0Co0.5 were investigated. X-ray diffraction results suggested that all the three samples were mainly composed of PuNi3-type, Ce2Ni7-type and Pr5Co19-type phase. These alloys reversibly absorbed and desorbed hydrogen up to ∼1.0 H/M under a hydrogen pressure of 2.5 MPa at 333 K. Moreover, the hexagonal structure of Ce2Ni7-type and Pr5Co19-type was retained during the absorption–desorption process. After hydrogenation, a volumetric expansion of 22.7% was observed for Ce2Ni7-type phase, and an expansion of 1.3% still remained after dehydrogenation.

Published
2007
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18. The Impact of Endoscopic Linear Stapling Device Stability in Thoracic Surgery: a Delphi Panel Approach

Author

K. Meyer, D. Gonzalez Rivas, Daniel L. Miller, T. Kohno, and R.S. Clark

Subjects
medicine.medical_specialty, business.industry, Health Policy, Delphi method, Public Health, Environmental and Occupational Health, 030204 cardiovascular system & hematology, lcsh:Computer applications to medicine. Medical informatics, Surgery, 03 medical and health sciences, 0302 clinical medicine, 030228 respiratory system, Cardiothoracic surgery, medicine, lcsh:R858-859.7, business, health care economics and organizations
Abstract

Objectives: To develop consensus statements outlining the impact of endoscopic linear stapling device stability on potential complications of thoracic surgery and the stress/concern of thoracic surgeons. Methods: Eight thoracic surgeons representing 8 countries participated in a Delphi panel process using 2 anonymous surveys. The first included binary, multiple-response, and Likert scale-type questions, which were converted into affirmative statements for survey 2 if an adequate number of respondents answered similarly. Consensus was defined a priori when ≥70% agreed with the affirmative statement in survey 2. Results: All panelists completed both surveys. Panelists unanimously agreed that: 1) an endoscopic linear stapling device with improved stability would result in less stress/concern for critical firings, surgeries where a fellow is trained, and robot-assisted surgeries requiring an assistant; 2) reduced unintentional tissue/structure damage and reduced tension on tissue being fired upon may result from use of an endoscopic linear stapling device that provides improvement in stability; and 3) endoscopic linear stapling device stability had more clinical importance in video-assisted thoracic surgery compared to open thoracic surgery. Conclusions: Improved endoscopic linear stapling device stability is a critical component of thoracic surgery likely to result in more frequent positive surgical outcomes when compared to a device with greater instability.

Published
2015
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19. Performance of the ZEUS Micro-Vertex Detector

Author

T. Kohno

Subjects
Nuclear physics, Physics, Nuclear and High Energy Physics, Luminosity (scattering theory), business.industry, Detector, High Energy Physics::Experiment, Tracking system, Vertex detector, business, Tracking (particle physics), Instrumentation, Zeus (malware)
Abstract

The ZEUS Micro-Vertex Detector (MVD) was installed in 2001 and the ZEUS experiment has started the HERA-II data taking since 2003. An integrated luminosity of 190 pb - 1 has been recorded at HERA-II which already exceeds the total integrated luminosity at HERA-I. The operational experience with the MVD and the performance of the new ZEUS tracking system are presented.

Published
2006
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20. Action of isoflurane on the substantia gelatinosa neurons of the adult rat spinal cord

Author

T. Kohno and A. Wakai

Subjects
Dorsum, medicine.medical_specialty, Minimum alveolar concentration, Postsynaptic Current, Chemistry, General Medicine, Spinal cord, Inhibitory postsynaptic potential, Endocrinology, Substantia gelatinosa, medicine.anatomical_structure, Isoflurane, Internal medicine, medicine, Excitatory postsynaptic potential, Neuroscience, medicine.drug
Abstract

The effects of a clinically relevant concentration (1.5%, 1 rat minimum alveolar concentration) of isoflurane diminished dorsal root-evoked polysynaptic, but not monosynaptic excitatory postsynaptic currents. In contrast, isoflurane prolonged the decay phase of evoked and miniature gamma-aminobutyric acid A receptor-mediated inhibitory postsynaptic currents. This may be a possible mechanism for antinociception by isoflurane in the spinal cord.

Published
2005
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21. Wireless motion capture system using magnetically coupled LC resonant marker

Author

K.I. Arai, Shuichiro Hashi, T. Kohno, T. Ozawa, Kazushi Ishiyama, Y. Tokunaga, Shin Yabukami, and Yasuo Okazaki

Subjects
Physics, Resonant inductive coupling, Frequency band, Acoustics, Condensed Matter Physics, Inductor, Inductive coupling, Electronic, Optical and Magnetic Materials, law.invention, Electromagnetic induction, Capacitor, Nuclear magnetic resonance, Electromagnetic coil, law, Electromagnetic shielding
Abstract

A novel motion capture system using magnetically coupled LC resonant marker have been developed. This system composed from the LC marker, a driving coil and a pickup coil array. The marker consists only of an inductor and a capacitor without battery or electric wires, and driven wirelessly by the action of electromagnetic induction. The position accuracy was around 2 mm when the marker was located within the space of 50 mm apart from the pickup coil array. The system is applicable for highly accurate motion capturing without magnetic shielding because the system is free from the earth field. Additionally, it has a possibility of a multi-point motion capturing because the system allow markers to have an individual frequency band.

Published
2005
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23. Development of a Position-Sensing System for a Wireless Magnetic Marker Using a Differential Pickup Coil

Author

T. Ozawa, Ken Ichi Arai, T. Abe, Yasuo Okazaki, Shin Yabukami, T. Kohno, and Shuichiro Hashi

Subjects
Physics, Magnetic marker, business.industry, Acoustics, Single coil, Condensed Matter Physics, Electronic, Optical and Magnetic Materials, Position (vector), Wireless, Development (differential geometry), Electrical and Electronic Engineering, business, Instrumentation, Sensing system, Differential (mathematics)
Published
2005
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24. Measurement of beauty production in deep inelastic scattering at HERA

Author

F. Sciulli, Kenneth Long, G. Bari, J. Repond, Af Zarnecki, K. C. Voss, Fernando Barreiro, Giovanna Bruni, H.-P. Jakob, M. Barbi, M. Basile, A. Stifutkin, T. Haas, S.I. Suchkov, R. Brugnera, LK Gladilin, Kerstin Borras, V. A. Kuzmin, E. Maddox, S.E.S. Schagen, D. Hochman, C. Youngman, Dong-Chul Son, S. Schlenstedt, P. J. Bussey, Didar Dobur, Elisabetta Gallo, S. Robins, G.P. Heath, M. Rosin, G. Romeo, Marco Schioppa, S. Magill, P. G. Pelfer, Inkyu Park, Leszek Adamczyk, Oliver Gutsche, Alessandro Montanari, Richard Hall-Wilton, H. Kowalski, S Lammers, M.I. Ferrero, P. Bellan, A. Galas, D. Szuba, L. M. Shcheglova, F. Karstens, J. H. Loizides, Allen Caldwell, Katsuo Tokushuku, D. Gladkov, P.F. Ermolov, M. Zambrana, Janusz Chwastowski, E. A. De Wolf, Xiaobing Liu, Luis Labarga, C. Collins-Tooth, K.J. Ma, James Ferrando, Giuseppe Iacobucci, S. Menary, Ada Solano, N. H. Brook, M. Derrick, T. Tymieniecka, P.M. Kooijman, Olga Lukina, N. A. McCubbin, P. Cloth, C.N. Nguyen, Sosnovtsev, H.G.J.M. Tiecke, Z. Ren, S. Limentani, A. Bruni, A. Parenti, T. Yamashita, T. Carli, U. Kötz, Tachishige Hirose, I. Gialas, D. Lelas, J. Ciborowski, A. Pesci, Adler, B. Foster, S. Dusini, Danuta Kisielewska, Anna Mastroberardino, P Ryan, Amanda Cooper-Sarkar, A.E. Nuncio-Quiroz, T. Koop, I. T. Lim, T. Namsoo, N. Pavel, J. J. Whitmore, J. Rautenberg, M. Inuzuka, AA Savin, M. Kowal, A. Kreisel, A. Cottrell, R. J. Nowak, A. Eskreys, A. T. Doyle, B. A. Dolgoshein, J. Szuba, Marta Ruspa, Iwona Grabowska-Bold, R. Yoshida, A. Ziegler, J. Fourletova, A. Antonov, S. Patel, B. B. Levchenko, K. Olkiewicz, T. Tawara, Pietro Antonioli, Luisa Cifarelli, R. K. Dementiev, I. Bloch, A. Benen, M. Vázquez, Ben Bylsma, G. Hartner, Sergei Chekanov, S. Kagawa, Jy Kim, I. A. Melzer-Pellmann, T. Kohno, R Corriveau, A. Longhin, M. Milite, T. Gosau, H. Hartmann, M. Wang, A.S. Proskuryakov, R. Walsh, Dirk-Uwe Bartsch, Michele Arneodo, P. Irrgang, A. Pellegrino, J. F. Martin, J. M. Pawlak, O.M. Kind, S. K. Dhawan, J. E. Cole, R. Renner, Claudia Glasman, G. F. Susinno, K. Nagano, R.C.E. Devenish, S. Stonjek, L. S. Durkin, L. Bellagamba, M. S. Soares, M. Y. Pac, D Kcira, A. Nigro, Chiochia, S. Goers, S. A. Zotkin, A. Garfagnini, Jonathan Butterworth, R. Hamatsu, A. M. Kowal, B. Löhr, Claire Gwenlan, J. Sutiak, G. Aghuzumtsyan, J. Standage, D. Dannheim, Lorenzo Rinaldi, Els Koffeman, Peter Schleper, C. Genta, Luca Stanco, Lev Khein, I. Abt, K. Matsuzawa, S. Kitamura, U. Fricke, Mck Mattingly, D. S. Bailey, S. De Pasquale, G. Grzelak, Halina Abramowicz, J. Tandler, N. Brümmer, J. Del Peso, J. Lukasik, Gy. Wolf, U. Stösslein, K. Wichmann, M. Adamus, A Polini, A. Keramidas, Monaco, C. Büttner, T. Fusayasu, A. Bertolin, A. Raval, P. Giusti, S. Kananov, G. Drews, P. Luzniak, J. de Favereau, C. Targett-Adams, G. Marini, U. Meyer, Wolfram Dietrich Zeuner, A. Bamberger, T. Tsurugai, S. Hanlon, Thomas Schörner-Sadenius, Y. Yamazaki, M. Kuze, Rosario Nania, E. Hilger, F. Palmonari, W. Hain, A. Kotański, J. Hamilton, L. Zawiejski, M. Turcato, H. Salehi, Edouard Boos, Costas Foudas, G. Kramberger, E. Lohrmann, M. Helbich, Jan Figiel, Mariusz Przybycien, M. Corradi, Tomasz Bold, Alexander Tapper, D. Notz, C. A. Heusch, P.B. Straub, E.A. Heaphy, C. D. Catterall, T. W. Jones, A Everett, A. Gabareen, WH Smith, B.Y. Oh, K. Wick, S. Gliga, G. Grigorescu, W.B. Schmidke, L. Suszycki, Andrea Contin, Antonino Zichichi, E. Tassi, H. Kaji, N.S. Pokrovskiy, J. Sztuk, I. O. Skillicorn, S. Bhadra, Marcella Capua, Detlef Filges, S. Padhi, N. Krumnack, S. Miglioranzi, A. Ukleja, L.W. Wiggers, C. Cormack, E. Paul, W. Słomiński, B.O. Zhautykov, A. N. Barakbaev, Marco Costa, Ulf Behrens, Federico Cindolo, C. Horn, J. Ukleja, O. González, Rainer Mankel, Achim Geiser, N.N. Vlasov, Juan Terron, M Wing, M. Posocco, B. Kahle, J. Lainesse, Roberto Carlin, S Hillert, Lightwood, U. Holm, M. Kataoka, Krzysztof Piotrzkowski, H. Lim, N. Coppola, DD Reeder, John Hart, F. Metlica, A. Mirea, B. Musgrave, D.G. Stairs, Katkov, S. Yamada, U. Schneekloth, Y. Iga, U. Karshon, D. Boscherini, Liang Li, P. Stopa, Ian Brock, Y. Ning, H. Labes, S. Fourletov, D. H. Saxon, P. Göttlicher, P. Danilov, Roberto Sacchi, Aharon Levy, Anselmo Margotti, Sutton, I. A. Korzhavina, M. Riveline, G. D'Agostini, T. Y. Ling, Pawel Plucinski, R. Gonçalo, Y. Eisenberg, R. Walczak, Giuseppe Barbagli, R. Ciesielski, G. Sartorelli, F. Dal Corso, S.J.L.A. Grijpink, S. Chekanov, M. Derrick, D. Krakauer, J.H. Loizides 1, S. Magill, B. Musgrave, J. Repond, R. Yoshida, M.C.K. Mattingly, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, G. Cara Romeo, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, S. De Pasquale, P. Giusti, G. Iacobucci, A. Margotti, A. Montanari, R. Nania, F. Palmonari, A. Pesci, L. Rinaldi, G. Sartorelli, A. Zichichi, G. Aghuzumtsyan, D. Bartsch, I. Brock, S. Goer, H. Hartmann, E. Hilger, P. Irrgang, H., Zeus (IHEF, IoP, FNWI), and UCL - SC/PHYS - Département de physique

Subjects
Particle physics, Nuclear and High Energy Physics, ROOT S=1.8 TEV, HERA, P(P)OVER-BAR COLLISIONS, FOS: Physical sciences, Inelastic scattering, Jet (particle physics), 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), High Energy Physics, ZEUS Collaboration, CENTRAL TRACKING DETECTOR, PRODUCTION CROSS-SECTION, CARLO GENERATOR CASCADE, BOTTOM-QUARK PRODUCTION, HADRON-COLLISIONS, HEAVY QUARKS, ZEUS BARREL, B-MESONS, 0103 physical sciences, 010306 general physics, Nuclear Experiment, QC, Physics, Quantum chromodynamics, Muon, ZEUS (particle detector), 010308 nuclear & particles physics, Deep inelastic scattering, Pair production, High Energy Physics::Experiment
Abstract

The beauty production cross section for deep inelastic scattering events with at least one hard jet in the Breit frame together with a muon has been measured, for photon virtualities Q^2 > 2 GeV^2, with the ZEUS detector at HERA using integrated luminosity of 72 pb^-1. The total visible cross section is sigma_b-bbar (ep -> e jet mu X) = 40.9 +- 5.7 (stat.) +6.0 -4.4 (syst.) pb. The next-to-leading order QCD prediction lies about 2.5 standard deviations below the data. The differential cross sections are in general consistent with the NLO QCD predictions; however at low values of Q^2, Bjorken x, and muon transverse momentum, and high values of jet transverse energy and muon pseudorapidity, the prediction is about two standard deviations below the data., 18 pages, 4 figures

Published
2004
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25. Evidence for a narrow baryonic state decaying to K0Sp and K0Sp̄ in deep inelastic scattering at HERA

Author

S. Chekanov, M. Derrick, J.H. Loizides, S. Magill, S. Miglioranzi, B. Musgrave, J. Repond, R. Yoshida, M.C.K. Mattingly, N. Pavel, P. Antonioli, G. Bari, M. Basile, L. Bellagamba, D. Boscherini, A. Bruni, G. Bruni, G. Cara Romeo, L. Cifarelli, F. Cindolo, A. Contin, M. Corradi, S. De Pasquale, P. Giusti, G. Iacobucci, A. Margotti, A. Montanari, R. Nania, F. Palmonari, A. Pesci, L. Rinaldi, G. Sartorelli, A. Zichichi, G. Aghuzumtsyan, D. Bartsch, I. Brock, S. Goers, H. Hartmann, E. Hilger, P. Irrgang, H.-P. Jakob, O. Kind, U. Meyer, E. Paul, J. Rautenberg, R. Renner, A. Stifutkin, J. Tandler, K.C. Voss, M. Wang, D.S. Bailey, N.H. Brook, J.E. Cole, G.P. Heath, T. Namsoo, S. Robins, M. Wing, M. Capua, A. Mastroberardino, M. Schioppa, G. Susinno, J.Y. Kim, I.T. Lim, K.J. Ma, M.Y. Pac, M. Helbich, Y. Ning, Z. Ren, W.B. Schmidke, F. Sciulli, J. Chwastowski, A. Eskreys, J. Figiel, A. Galas, K. Olkiewicz, P. Stopa, L. Zawiejski, L. Adamczyk, T. Bołd, I. Grabowska-Bołd, D. Kisielewska, A.M. Kowal, M. Kowal, J. Łukasik, M. Przybycień, L. Suszycki, D. Szuba, J. Szuba, A. Kotański, W. Słomiński, V. Adler, U. Behrens, I. Bloch, K. Borras, V. Chiochia, D. Dannheim, G. Drews, J. Fourletova, U. Fricke, A. Geiser, P. Göttlicher, O. Gutsche, T. Haas, W. Hain, S. Hillert, C. Horn, B. Kahle, U. Kötz, H. Kowalski, G. Kramberger, H. Labes, D. Lelas, H. Lim, B. Löhr, R. Mankel, I.-A. Melzer-Pellmann, C.N. Nguyen, D. Notz, A.E. Nuncio-Quiroz, A. Polini, A. Raval, L. Rurua, U. Schneekloth, U. Stösslein, G. Wolf, C. Youngman, W. Zeuner, S. Schlenstedt, G. Barbagli, E. Gallo, C. Genta, P.G. Pelfer, A. Bamberger, A. Benen, F. Karstens, D. Dobur, N.N. Vlasov, M. Bell, P.J. Bussey, A.T. Doyle, J. Ferrando, J. Hamilton, S. Hanlon, D.H. Saxon, I.O. Skillicorn, I. Gialas, T. Carli, T. Gosau, U. Holm, N. Krumnack, E. Lohrmann, M. Milite, H. Salehi, P. Schleper, T. Schörner-Sadenius, S. Stonjek, K. Wichmann, K. Wick, A. Ziegler, Ar. Ziegler, C. Collins-Tooth, C. Foudas, R. Gonçalo, K.R. Long, A.D. Tapper, P. Cloth, D. Filges, M. Kataoka, K. Nagano, K. Tokushuku, S. Yamada, Y. Yamazaki, A.N. Barakbaev, E.G. Boos, N.S. Pokrovskiy, B.O. Zhautykov, D. Son, K. Piotrzkowski, F. Barreiro, C. Glasman, O. González, L. Labarga, J. del Peso, E. Tassi, J. Terrón, M. Zambrana, M. Barbi, F. Corriveau, S. Gliga, J. Lainesse, S. Padhi, D.G. Stairs, R. Walsh, T. Tsurugai, A. Antonov, P. Danilov, B.A. Dolgoshein, D. Gladkov, V. Sosnovtsev, S. Suchkov, R.K. Dementiev, P.F. Ermolov, I.I. Katkov, L.A. Khein, I.A. Korzhavina, V.A. Kuzmin, B.B. Levchenko, O.Yu. Lukina, A.S. Proskuryakov, L.M. Shcheglova, S.A. Zotkin, I. Abt, C. Büttner, A. Caldwell, X. Liu, J. Sutiak, N. Coppola, S. Grijpink, E. Koffeman, P. Kooijman, E. Maddox, A. Pellegrino, S. Schagen, H. Tiecke, M. Vázquez, L. Wiggers, E. de Wolf, N. Brümmer, B. Bylsma, L.S. Durkin, T.Y. Ling, A.M. Cooper-Sarkar, A. Cottrell, R.C.E. Devenish, B. Foster, G. Grzelak, C. Gwenlan, T. Kohno, S. Patel, P.B. Straub, R. Walczak, A. Bertolin, R. Brugnera, R. Carlin, F. Dal Corso, S. Dusini, A. Garfagnini, S. Limentani, A. Longhin, A. Parenti, M. Posocco, L. Stanco, M. Turcato, E.A. Heaphy, F. Metlica, B.Y. Oh, J.J. Whitmore, Y. Iga, G. D'Agostini, G. Marini, A. Nigro, C. Cormack, J.C. Hart, N.A. McCubbin, C. Heusch, I.H. Park, H. Abramowicz, A. Gabareen, S. Kananov, A. Kreisel, A. Levy, M. Kuze, T. Fusayasu, S. Kagawa, T. Tawara, T. Yamashita, R. Hamatsu, T. Hirose, M. Inuzuka, H. Kaji, S. Kitamura, K. Matsuzawa, M. Costa, M.I. Ferrero, V. Monaco, R. Sacchi, A. Solano, M. Arneodo, M. Ruspa, T. Koop, J.F. Martin, A. Mirea, J.M. Butterworth, R. Hall-Wilton, T.W. Jones, M.S. Lightwood, M.R. Sutton, C. Targett-Adams, J. Ciborowski, R. Ciesielski, P. Łużniak, R.J. Nowak, J.M. Pawlak, J. Sztuk, T. Tymieniecka, A. Ukleja, J. Ukleja, A.F. Żarnecki, M. Adamus, P. Plucinski, Y. Eisenberg, D. Hochman, U. Karshon, M. Riveline, A. Everett, L.K. Gladilin, D. Kçira, S. Lammers, L. Li, D.D. Reeder, M. Rosin, P. Ryan, A.A. Savin, W.H. Smith, S. Dhawan, S. Bhadra, C.D. Catterall, S. Fourletov, G. Hartner, S. Menary, M. Soares, J. Standage, Zeus (IHEF, IoP, FNWI), and UCL - SC/PHYS - Département de physique

Subjects
Physics, Particle physics, Nuclear and High Energy Physics, Luminosity (scattering theory), 010308 nuclear & particles physics, Hadron, FOS: Physical sciences, HERA, Inelastic scattering, Deep inelastic scattering, 01 natural sciences, Resonance (particle physics), Pentaquark, 3. Good health, High Energy Physics - Experiment, Nuclear physics, Baryon, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, High Energy Physics::Experiment, 010306 general physics, Nuclear Experiment
Abstract

A resonance search has been made in the K0s p and K0s pbar invariant-mass spectrum measured with the ZEUS detector at HERA using an integrated luminosity of 121 pb-1. The search was performed in the central rapidity region of inclusive deep inelastic scattering at an ep centre-of-mass energy of 300-318 GeV for exchanged photon virtuality, Q2, above 1 GeV2. Recent results from fixed-target experiments give evidence for a narrow baryon resonance decaying to K+ n and K0s p, interpreted as a pentaquark. The results presented here support the existence of such state, with a mass of 1521.5+/-1.5(stat.)^{+2.8}_{-1.7}(syst.) MeV and a Gaussian width consistent with the experimental resolution of 2 MeV. The signal is visible at high Q2 and, for Q2>20 GeV2, contains 221+/-48 events. The probability of a similar signal anywhere in the range 1500-1560 MeV arising from fluctuations of the background is below 6x10^{-5}., 4 eps figures, 15 pages, 1 table, accepted by Physics Letters B

Published
2004
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26. Fabrication of Nd1−xCaxBa2Cu3O7−δ (x=0–0.3) single crystalline films by tri-phase epitaxy

Author

T. Kohno, Hideomi Koinuma, Yu Matsumoto, Ryota Takahashi, and Masashi Kawasaki

Subjects
Inorganic Chemistry, Crystallinity, Lattice constant, Chemistry, Annealing (metallurgy), Doping, Materials Chemistry, Analytical chemistry, Thin film, Condensed Matter Physics, Epitaxy, Pulsed laser deposition, Phase diagram
Abstract

In order to fabricate single crystalline films with controlled carrier concentration, we have applied the tri-phase epitaxy (TPE) for Ca doped NdBa2Cu3O7−δ (NCBCO). The TPE is a process to deposit a solid thin film from a thin liquid layer, while film precursors are being fed from the gas phase into the liquid layer to maintain the quasi-equilibrium between the growing solid layer and the overlying liquid layer. The NCBCO films were prepared by the TPE using pulsed laser deposition (PLD) under the conditions designed from the thermodynamic phase diagram. The NCBCO TPE film obtained, exhibited a higher crystallinity and a larger grain size as compared with the film by the conventional PLD without using the liquid flux layer. The TPE films had atomically flat surfaces with 1.2 nm height steps, which corresponded to the lattice constant along the c-axis of the crystal structure. In the NCBCO TPE films, Ca was homogeneously distributed over the film thickness. By the post-annealing for incorporation of oxygen in the film, we could obtain crack free superconducting NCBCO films.

Published
2004
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27. Active control of flow oscillations in jet–wedge system by acoustic feedback

Author

S. Tomimatsu, T. Kohno, Y. Takizawa, and Nobuyuki Fujisawa

Subjects
Physics, Flow visualization, business.product_category, business.industry, Oscillation, Mechanical Engineering, Feedback control, Nozzle, Mechanics, Active control, Wedge (mechanical device), Physics::Fluid Dynamics, Optics, Particle image velocimetry, Audio feedback, business
Abstract

The performance and mechanism of an acoustic feedback control applied to flow oscillation in a jet–wedge system were investigated experimentally. The self-sustained oscillations were effectively suppressed by imposing velocity fluctuations near the nozzle exit, which were fed by the fluctuating pressure signal at the wedge with a certain phase lag and feedback gain. The optimum condition for the imposed velocity amplitude was found to be as small as 1.2% of the jet velocity. The variation of the flow field with and without control was studied by flow visualization with high-speed camera and by flow-field measurements with particle image velocimetry. These observations indicate that the primary mode of the jet oscillation in the jet–wedge system is weakened by the feedback control to a level of secondary mode. This is mainly due to the destruction of the synchronized flow structure of the jet–wedge system by the active control, which is found in the mean and fluctuating velocity distribution and the velocity correlation over the wedge and along the jet shear-layers.

Published
2004
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28. Development of a Position-Sensing System for a Wireless Magnetic Marker

Author

Ken Ichi Arai, Yasuo Okazaki, T. Kohno, Shin Yabukami, Shuichiro Hashi, and Y. Tokunaga

Subjects
Physics, Nuclear magnetic resonance, business.industry, Position (vector), Magnetic marker, Electrical engineering, Wireless, Electrical and Electronic Engineering, Condensed Matter Physics, business, Instrumentation, Sensing system, Electronic, Optical and Magnetic Materials
Published
2004
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29. Scaling violations and determination of αs from jet production in γp interactions at HERA

Author

S Chekanov, D Krakauer, J.H Loizides, S Magill, B Musgrave, J Repond, R Yoshida, M.C.K Mattingly, P Antonioli, G Bari, M Basile, L Bellagamba, D Boscherini, A Bruni, G Bruni, G Cara Romeo, L Cifarelli, F Cindolo, A Contin, M Corradi, S De Pasquale, P Giusti, G Iacobucci, A Margotti, R Nania, F Palmonari, A Pesci, G Sartorelli, A Zichichi, G Aghuzumtsyan, D Bartsch, I Brock, S Goers, H Hartmann, E Hilger, P Irrgang, H.-P Jakob, A Kappes, U.F Katz, O Kind, E Paul, J Rautenberg, R Renner, H Schnurbusch, A Stifutkin, J Tandler, K.C Voss, M Wang, A Weber, D.S Bailey, N.H Brook, J.E Cole, B Foster, G.P Heath, H.F Heath, S Robins, E Rodrigues, J Scott, R.J Tapper, M Wing, M Capua, A Mastroberardino, M Schioppa, G Susinno, J.Y Kim, Y.K Kim, J.H Lee, I.T Lim, M.Y Pac, A Caldwell, M Helbich, X Liu, B Mellado, Y Ning, S Paganis, Z Ren, W.B Schmidke, F Sciulli, J Chwastowski, A Eskreys, J Figiel, K Olkiewicz, P Stopa, L Zawiejski, L Adamczyk, T Bołd, I Grabowska-Bołd, D Kisielewska, A.M Kowal, M Kowal, T Kowalski, M Przybycień, L Suszycki, D Szuba, J Szuba, A Kotański, W Słomiński, L.A.T Bauerdick, U Behrens, I Bloch, K Borras, V Chiochia, D Dannheim, M Derrick, G Drews, J Fourletova, A Fox-Murphy, U Fricke, A Geiser, F Goebel, P Göttlicher, O Gutsche, T Haas, W Hain, G.F Hartner, S Hillert, U Kötz, H Kowalski, G Kramberger, H Labes, D Lelas, B Löhr, R Mankel, I.-A Melzer-Pellmann, M Moritz, D Notz, M.C Petrucci, A Polini, A Raval, U Schneekloth, F Selonke, H Wessoleck, R Wichmann, G Wolf, C Youngman, W Zeuner, A Lopez-Duran Viani, A Meyer, S Schlenstedt, G Barbagli, E Gallo, C Genta, P.G Pelfer, A Bamberger, A Benen, N Coppola, M Bell, P.J Bussey, A.T Doyle, C Glasman, J Hamilton, S Hanlon, S.W Lee, A Lupi, D.H Saxon, I.O Skillicorn, I Gialas, B Bodmann, T Carli, U Holm, K Klimek, N Krumnack, E Lohrmann, M Milite, H Salehi, S Stonjek, K Wick, A Ziegler, Ar Ziegler, C Collins-Tooth, C Foudas, R Gonçalo, K.R Long, F Metlica, A.D Tapper, P Cloth, D Filges, M Kuze, K Nagano, K Tokushuku, S Yamada, Y Yamazaki, A.N Barakbaev, E.G Boos, N.S Pokrovskiy, B.O Zhautykov, H Lim, D Son, F Barreiro, O González, L Labarga, J del Peso, I Redondo, E Tassi, J Terrón, M Vázquez, M Barbi, A Bertolin, F Corriveau, S Gliga, J Lainesse, S Padhi, D.G Stairs, T Tsurugai, A Antonov, P Danilov, B.A Dolgoshein, D Gladkov, V Sosnovtsev, S Suchkov, R.K Dementiev, P.F Ermolov, Yu.A Golubkov, I.I Katkov, L.A Khein, I.A Korzhavina, V.A Kuzmin, B.B Levchenko, O.Yu Lukina, A.S Proskuryakov, L.M Shcheglova, N.N Vlasov, S.A Zotkin, C Bokel, J Engelen, S Grijpink, E Koffeman, P Kooijman, E Maddox, A Pellegrino, S Schagen, H Tiecke, N Tuning, J.J Velthuis, L Wiggers, E de Wolf, N Brümmer, B Bylsma, L.S Durkin, T.Y Ling, S Boogert, A.M Cooper-Sarkar, R.C.E Devenish, J Ferrando, G Grzelak, T Matsushita, M Rigby, O Ruske, M.R Sutton, R Walczak, R Brugnera, R Carlin, F Dal Corso, S Dusini, A Garfagnini, S Limentani, A Longhin, A Parenti, M Posocco, L Stanco, M Turcato, E.A Heaphy, B.Y Oh, P.R.B Saull, J.J Whitmore, Y Iga, G D'Agostini, G Marini, A Nigro, C Cormack, J.C Hart, N.A McCubbin, C Heusch, I.H Park, N Pavel, H Abramowicz, A Gabareen, S Kananov, A Kreisel, A Levy, T Abe, T Fusayasu, S Kagawa, T Kohno, T Tawara, T Yamashita, R Hamatsu, T Hirose, M Inuzuka, S Kitamura, K Matsuzawa, T Nishimura, M Arneodo, M.I Ferrero, V Monaco, M Ruspa, R Sacchi, A Solano, R Galea, T Koop, G.M Levman, J.F Martin, A Mirea, A Sabetfakhri, J.M Butterworth, C Gwenlan, R Hall-Wilton, T.W Jones, M.S Lightwood, B.J West, J Ciborowski, R Ciesielski, R.J Nowak, J.M Pawlak, B Smalska, J Sztuk, T Tymieniecka, A Ukleja, J Ukleja, A.F Żarnecki, M Adamus, P Plucinski, Y Eisenberg, L.K Gladilin, D Hochman, U Karshon, D Kçira, S Lammers, L Li, D.D Reeder, A.A Savin, W.H Smith, A Deshpande, S Dhawan, V.W Hughes, P.B Straub, S Bhadra, C.D Catterall, S Fourletov, S Menary, M Soares, and J Standage

Subjects
Physics, Quantum chromodynamics, Nuclear and High Energy Physics, Particle physics, Jet (fluid), ZEUS (particle detector), Luminosity (scattering theory), 010308 nuclear & particles physics, Astrophysics::High Energy Astrophysical Phenomena, HERA, Deep inelastic scattering, 01 natural sciences, Particle identification, Nuclear physics, Pseudorapidity, 0103 physical sciences, High Energy Physics::Experiment, Nuclear Experiment, 010306 general physics
Abstract

Differential cross sections for jet photoproduction in the reaction ep→e jet X have been measured with the ZEUS detector at HERA using 82.2 pb−1 of integrated luminosity. Inclusive jet cross sections are presented as a function of the jet transverse energy, ETjet, for jets with ETjet>17 GeV and pseudorapidity −1

Published
2003
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33. Rotational head motion concurrent to rhythmical mandibular opening movements

Author

Raul Medina, T. Kohno, and Shoji Kohno

Subjects
Adult, Male, Rotation, Movement, Mandible, Dental Occlusion, Parietal Bone, stomatognathic system, Maxilla, medicine, Humans, Displacement (orthopedic surgery), Clockwise, Range of Motion, Articular, General Dentistry, Skull Base, Temporomandibular Joint, Dental occlusion, Rotation around a fixed axis, Signal Processing, Computer-Assisted, Anatomy, Sagittal plane, Incisor, medicine.anatomical_structure, Head Movements, Occipital Bone, Geology
Abstract

We have previously demonstrated the existence of a functional-rhythmical coupling between the head and the mandible using maxillary and mandibular incisal tracking points. However, that data did not provide information neither on the movement of the head as a whole nor on the location of its instantaneous centre of rotation. Thus, the objective of the present study was to determine whether the head undergoes a rotational motion during mouth opening and to locate its putative instantaneous centre of rotation. The same 6 d.f. (degree of freedom) measuring device employed in our previous studies was used again to analyse data from five male adults (age range: 26-29 years old) chosen as subjects. Concomitant head and mandibular movements were assessed in the sagittal plane by allocating several reference points in the head (upper incisor, cranial base, occipital and parietal points) and a mandibular incisor point during maximal mouth open-close movements. Then, the magnitude and inclination of the vectors of motion in each reference point during the opening phase were calculated. The instantaneous centre of rotation was defined as the point showing the least amount of motion in a determined area around each head reference point. The mandibular incisal point and the maxillary incisal point showed concomitant movements; that is, during opening the mandibular point moved downwards and the maxillary incisor point upwards. Making a large jaw opening movement caused an inferior-anterior displacement in the O point, a posterior-inferior displacement of the P point, and an anterior-superior displacement in the C point in all subjects. During jaw closing all points followed a trajectory opposite to that described above. In other words, during opening the head moved clockwise and counter-clockwise during closing, at least in the sagittal plane of the subjects' left side. These results suggest that the head undergoes a rotation-like sagittal movement during mouth opening whose rotation centre seems to be located above the cranial base point, which was set close to the centre of mass of the head. However, its location varies according to the magnitude of mouth opening.

Published
2001
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34. Photocatalytic activity of TiO2particulate films prepared by depositing TiO2particles with various sizes

Author

T. Kakihara, E. Kozawa, Nobuyuki Momozawa, Masahiko Abe, Hideki Sakai, T. Hirano, and T. Kohno

Subjects
Materials science, Oxidative degradation, Photochemistry, Surface Properties, Ultraviolet Rays, Pharmaceutical Science, Mineralogy, Cyclohexanone, Bioengineering, Substrate (electronics), Catalysis, 2-Propanol, chemistry.chemical_compound, Colloid and Surface Chemistry, Suspensions, X-Ray Diffraction, Particle Size, Physical and Theoretical Chemistry, Titanium, Cyclohexanones, Organic Chemistry, Membranes, Artificial, Particulates, Grinding, chemistry, Chemical engineering, Solvents, Photocatalysis, Degradation (geology), Particle size, Oxidation-Reduction
Abstract

TiO2 particles of various sizes were prepared by grinding in cyclohexanone, and TiO2 particulate films were obtained by depositing these TiO2 particles with various sizes onto a glass or quartz substrate. The effect of the particle size and thickness on the photocatalytic properties of the films was evaluated via oxidative degradation of gaseous 2-propanol. The initial rate of 2-propanol degradation under UV light irradiation for the films deposited with 30 nm TiO2 particles increased with increasing film thickness up to 600 nm, and reached a saturated value above this film thickness. Photocatalytic activity for the films with thickness below 600nm was larger when smaller TiO2 particles were deposited onto the substrate, due to the increase in the surface area of the particulate films. Furthermore, saturated values of the photocatalytic activity for thick films were smaller for the films deposited with smaller particles, which is mainly attributed to the change in crystal form of the particles during the grinding treatment.

Published
2001
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35. Status of the ATLAS level-1 central trigger and muon barrel trigger and first results from cosmic-ray data

Author

Johannes Haller, Andrea Messina, Daniel Lellouch, Paolo Camarri, Stefano Veneziano, P. Gallno, Paolo Iengo, Yasuyuki Okumura, Masaharu Nomachi, G. Schuler, Stefania Spagnolo, Alberto Aloisio, Hisaya Kurashige, F. Spila, D. De Pedis, Roberto Perrino, H. Nomoto, Giuseppe Iacobucci, Tohru Takeshita, R. Santonico, A. Bruni, Erez Etzion, Shlomit Tarem, R. Lifshitz, Anna Rita Migliaccio, P. Klofver, H. Oshita, F. Grancagnolo, T. Kuwabara, O.B. Treidel, M. Biglietti, Margherita Primavera, S. Tanaka, G. Aielli, M. Della Pietra, Attila Krasznahorkay, S. Ask, P. Farthouat, Vincenzo Izzo, Hiroshi Sakamoto, M. Perantoni, Hiroyuki Iwasaki, H. Takeda, Enrique Kajomovitz, Masahiro Ikeno, S. Antonelli, D. della Volpe, Stefano Rosati, J.M. de Seixas, T. Kobayashi, Vincenzo Canale, Roberto Cardarelli, M.R. Coluccia, Yorihito Sugaya, Michele Bianco, C. Omachi, Givi Sekhniaidze, Mitsuaki Nozaki, Emilio Petrolo, Osamu Sasaki, E. Solfaroli, T. Kawamoto, Thilo Pauly, Thorsten Wengler, T. Kohno, P. Giusti, Gabriele Chiodini, Takashi Kubota, Mariagrazia Alviggi, Yoshiji Yasu, Makoto Tomoto, Barbara Liberti, G. Mikenberg, S. I. Buda, T. Sugimoto, S. Ben Amii, S. Haas, S. Patricelli, R. de Asmundis, Gianpaolo Carlino, A. Salamon, T. Niwa, G. Bruni, Lorne Levinson, Chikara Fukunaga, M. Dogaru, Enrico Pasqualucci, A. DiCiaccio, S. Constantin, Yuta Takahashi, H.P. Lima, Riccardo Vari, N. Lupu, Nicolas Ellis, Y. Benhammou, F.C. Pastore, A. Di Mattia, D. Boscherini, Francesco Conventi, M. Pectu, Edoardo Gorini, Kiyotomo Kawagoe, T. Kadosaka, Masaya Ishino, A. Di Girolamo, R. Spiwoks, H. Kiyamura, L. Bellagamba, Yohei Yamaguchi, Yoji Hasegawa, L. Zanello, Shikma Bressler, F. Marchese, Aleandro Nisati, Christian Ohm, Atsuhiko Ochi, Claudio Luci, Kunihiro Nagano, Alessandro Polini, David Berge, A. Roich, G. Ciapetti, N. Kanaya, D. Caracinha, Aielli, G, Aloisio, A, Alviggi, Mg, Antonelli, S, Ask, S, Bellagamba, L, BEN AMI, S, Benhammou, Y, Berge, D, Bianco, Michele, Biglietti, Mg, Boscherini, D, Bressler, S, Bruni, A, Bruni, G, Buda, S, Camarri, P, Canale, V, Caracinha, D, Cardarelli, R, Carlino, G, Chiodini, G, Ciapetti, G, Coluccia, Mr, Constantin, S, Conventi, F, Deasmundis, R, Dellapietra, M, Dellavolpe, D, Dogaru, M, DE PEDIS, D, DI GIROLAMO, A, Diciaccio, A, DI MATTIA, A, Ellis, N, Etzion, E, Farthouat, P, Fukunaga, C, Gallno, P, Gorini, Edoardo, Grancagnolo, F, Giusti, P, Haas, S, Haller, J, Hasegawa, Y, Iacobucci, G, Ikeno, M, Iengo, P, Ishino, M, Iwasaki, H, Izzo, V, Kadosaka, T, Kajomovitz, E, Kanaya, N, Kawagoe, K, Kawamoto, T, Kiyamura, H, Klofver, P, Kobayashi, T, Kohno, T, Krasznahorkay, A, Kubota, T, Kurashige, H, Kuwabara, T, Lellouch, D, Levinson, L, Liberti, B, Lifshitz, R, Luci, C, Lupu, N, Marchese, F, Messina, A, Mikenberg, G, Migliaccio, A, Nagano, K, Nisati, A, Niwa, T, Nomachi, M, Nomoto, H, Nozaki, M, Ochi, A, Ohm, C, Okumura, Y, Omachi, C, Oshita, H, Patricelli, S, Pauly, T, Perantoni, M, Lima, Hp, Petrolo, E, Pasqualucci, E, Pastore, F, Pectu, M, Perrino, R, Polini, A, Primavera, Margherita, Roich, A, Rosati, S, Salamon, A, Sakamoto, H, Santonico, R, Sasaki, O, Schuler, G, DE SEIXAS, Jm, Sekhniaidze, G, Solfaroli, E, Spagnolo, Stefania Antonia, Spila, F, Spiwoks, R, Sugaya, Y, Sugimoto, T, Takahashi, Y, Takeda, H, Takeshita, T, Tanaka, S, Tarem, S, Tomoto, M, Treidel, Ob, Vari, R, Veneziano, S, Wengler, T, Yamaguchi, Y, Yasu, Y, Zanello, L., G., Aielli, Aloisio, Alberto, Alviggi, Mariagrazia, S., Antonelli, S., Ask, L., Bellagamba, S., Ben Ami, Y., Benhammou, David, Berge, M., Bianco, M. G., Biglietti, D., Boscherini, S., Bressler, A., Bruni, G., Bruni, S., Buda, P., Camarri, Canale, Vincenzo, D., Caracinha, R., Cardarelli, G., Carlino, G., Chiodini, G., Ciapetti, M. R., Coluccia, S., Constantin, F., Conventi, R., Deasmundi, DELLA PIETRA, Massimo, DELLA VOLPE, Domenico, M., Dogaru, D., De Pedi, A., Di Girolamo, A., Diciaccio, A., Di Mattia, N., Elli, E., Etzion, P., Farthouat, C., Fukunaga, P., Gallno, E., Gorini, F., Grancagnolo, P., Giusti, S., Haa, J., Haller, Y., Hasegawa, G., Iacobucci, M., Ikeno, P., Iengo, M., Ishino, H., Iwasaki, V., Izzo, T., Kadosaka, E., Kajomovitz, N., Kanaya, K., Kawagoe, T., Kawamoto, H., Kiyamura, P., Klofver, T., Kobayashi, T., Kohno, A., Krasznahorkay, T., Kubota, H., Kurashige, T., Kuwabara, D., Lellouch, L., Levinson, B., Liberti, R., Lifshitz, C., Luci, N., Lupu, F., Marchese, A., Messina, G., Mikenberg, A., Migliaccio, K., Nagano, A., Nisati, T., Niwa, M., Nomachi, H., Nomoto, M., Nozaki, A., Ochi, C., Ohm, Y., Okumura, C., Omachi, H., Oshita, S., Patricelli, T., Pauly, M., Perantoni, H., Pessoa Lima, E., Petrolo, E., Pasqualucci, F., Pastore, M., Pectu, R., Perrino, A., Polini, M., Primavera, A., Roich, S., Rosati, A., Salamon, H., Sakamoto, R., Santonico, O., Sasaki, G., Schuler, J. M., de Seixa, G., Sekhniaidze, E., Solfaroli, S., Spagnolo, F., Spila, R., Spiwok, Y., Sugaya, T., Sugimoto, Y., Takahashi, H., Takeda, T., Takeshita, S., Tanaka, S., Tarem, M., Tomoto, O., Bahat Treidel, R., Vari, S., Veneziano, T., Wengler, Y., Yamaguchi, Y., Yasu, and L., Zanello

Subjects
Physics, Nuclear and High Energy Physics, Large Hadron Collider, Muon, Physics::Instrumentation and Detectors, business.industry, Settore FIS/01 - Fisica Sperimentale, Detector, Barrel (horology), Cosmic ray, Nuclear physics, Data acquisition, medicine.anatomical_structure, Nuclear Energy and Engineering, Atlas (anatomy), Nuclear electronics, medicine, Physics::Accelerator Physics, Electrical and Electronic Engineering, business, Computer hardware
Abstract

The ATLAS detector at CERN's Large Hadron Collider (LHC) will be exposed to proton-proton collisions from beams crossing at 40 MHz. A three-level trigger system will select potentially interesting events in order to reduce the readout rate to about 200 Hz. The first trigger level is implemented in custom-built electronics and makes an initial fast selection based on detector data of coarse granularity. It has to reduce the rate by a factor of 104 to less than 100 kHz. The other two consecutive trigger levels are in software and run on PC farms. We present an overview of the first-level central trigger and the muon barrel trigger system and report on the current installation status. Moreover, we show analysis results of cosmic-ray data recorded in situ at the ATLAS experimental site with final or close-to-final hardware.

Published
2008

36. Allelic imbalance and mutations of the PTEN gene in ovarian cancer

Author

M, Saito, A, Okamoto, T, Kohno, S, Takakura, H, Shinozaki, S, Isonishi, T, Yasuhara, T, Yoshimura, Y, Ohtake, K, Ochiai, J, Yokota, and T, Tanaka

Subjects
Ovarian Neoplasms, Cancer Research, Chromosomes, Human, Pair 10, Tumor Suppressor Proteins, PTEN Phosphohydrolase, Chromosome Mapping, Loss of Heterozygosity, Polymerase Chain Reaction, Phosphoric Monoester Hydrolases, Gene Frequency, Oncology, Mutation, Tumor Cells, Cultured, Humans, Female, Polymorphism, Single-Stranded Conformational, Microsatellite Repeats
Abstract

The PTEN/MMAC1/TEP1 tumor-suppressor gene, which maps to chromosome 10q23.3, is mutated and homozygously deleted in a variety of human tumors, including endometrioid-type ovarian tumors. We examined 33 primary ovarian cancers and 3 ovarian borderline tumors for allelic imbalance (AI) of the 10q23.3 region using 5 polymorphic markers, including an insertion/deletion-type polymorphic marker identified in intron 4 of the PTEN gene. AI at one or more loci was detected in 12 of 31 (39%) informative ovarian cancers and none of 3 ovarian borderline tumors. The commonly deleted region was mapped between the D10S215 and D10S541 loci, including the PTEN locus. Moreover, the incidence of AI at the PTEN locus (38%) was the highest among the 5 loci examined. Therefore, we searched for mutations in the entire coding region of the PTEN gene by PCR-SSCP and sequencing analyses in these tumors and 7 ovarian cancer cell lines. Mutations were detected in 3 of the 33 (9%) ovarian cancers: 2 cases with double mutations and 1 case with a mutation on 1 allele accompanied by deletions on both alleles in the poly T tract preceding the splice acceptor site in intron 7. An intragenic deletion was detected in 1 of the 7 (14%) ovarian cancer cell lines. PTEN mutations were detected not only in the endometrioid type but also in the serous and mucinous types of ovarian cancer. However, PTEN was not mutated in the 12 tumors that showed AI of the PTEN locus. Our results suggest that the PTEN gene plays an important role in the development of a subset but diverse histological types of ovarian tumors. However, it is possible that another tumor-suppressor gene in the close vicinity of the PTEN gene is also inactivated by AI of the 10q23.3 region.

Published
2000
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37. Spatial and temporal variations of energetic trapped helium ions measured with Japanese satellite OHZORA

Author

Walther N. Spjeldvik, Inácio M. Martin, T. Kohno, G.I. Pugacheva, and A.A. Gusev

Subjects
Physics, Atmospheric Science, Range (particle radiation), Aerospace Engineering, Flux, Astronomy and Astrophysics, Spatial distribution, Ion, Geophysics, Term (temporal), Space and Planetary Science, Helium ions, General Earth and Planetary Sciences, Satellite, Atomic physics, Nucleon
Abstract

The results of measurements of absolute flux values and long term temporal evolution of the spatial distribution of trapped He ions in the energy range 1.2 – 9.2 MeV/nucleon below L = 4 are reported. The observations were made with ion counter on board the Japanese OHZORA satellite during the period of January 1984 through March 1987.

Published
2000
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38. Sorsby fundus dystrophy without a mutation in the TIMP-3 gene

Author

P.T.V.M. de Jong, A. A. B. Bergen, J. J. M. Assink, Françoise Meire, E. De Backer, J.B. ten Brink, T. Kohno, Epidemiology, Netherlands Institute for Neuroscience (NIN), and Other departments

Subjects
Male, Pathology, medicine.medical_specialty, Chromosomes, Human, Pair 22, Eye disease, Retinal Drusen, Retinal Neovascularization, Biology, medicine.disease_cause, Polymerase Chain Reaction, Genetic determinism, Macular Degeneration, Cellular and Molecular Neuroscience, Exon, Atrophy, Genetic linkage, medicine, Humans, Promoter Regions, Genetic, Gene, Aged, Genes, Dominant, Aged, 80 and over, Tissue Inhibitor of Metalloproteinase-3, Mutation, Chromosome Mapping, DNA, Exons, Middle Aged, Macular degeneration, Original articles - Clinical science, medicine.disease, Sensory Systems, eye diseases, Pedigree, Ophthalmology, Editorial, Female
Abstract

AIMS—To examine a large family with an autosomal dominant fundus dystrophy and to investigate whether or not mutations in TIMP-3 gene were involved. METHODS—A large family of 58 individuals with an autosomal dominant fundus dystrophy was examined ophthalmologically. A DNA linkage analysis in the 22q12.1-q13.2 region was performed. The TIMP-3 gene was screened for mutations in all five exons. RESULTS—In this large family 15 individuals were affected. All other individuals were found to be clinically unaffected. Pisciform flecks in the midperiphery and drusen-like deposits were the most typical ophthalmological finding in this family and were encountered from the fifth decade on. Chorioretinal atrophy and neovascularisation with disciform lesions characterised the disease from the sixth decade on. Linkage analysis using an affected only analysis, showed a maximum positive lod score of 3.94 at θ = 0.0 with marker D22S283. No mutations possibly causing Sorsby fundus dystrophy were found in either the exonic sequences, the promotor region, or the 3'UTR. CONCLUSION—The family in this pedigree has an autosomal dominant fundus dystrophy, which is most probably Sorsby fundus dystrophy. Although, in the linkage analysis, significant positive lod scores were found with the region 22q12.1-q13.2, no causative mutations could be identified in the TIMP-3 gene.

Published
2000
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39. The ATLAS Data Acquisition and Trigger: concept, design and status

Author

J. Van Wasen, Y. Ermoline, M. P. Casado, H. Zobernig, H. K. Hadavand, G. Comune, R. E. Hughes-Jones, P. Rheaum, M. D. Ciobotaru, Brigitte Vachon, S. Klous, Thorsten Wengler, M. Abolins, Y. F. Ryabov, A. Misiejuk, A. Dotti, G. Cataldi, H. von der Schmitt, Shlomit Tarem, Giuseppe Mornacchi, J. L. Schlereth, Scott H. Robertson, E. Sole-Segura, Wainer Vandelli, R. Murillo-García, T. Kohno, Speranza Falciano, Mikhail Mineev, Robert Blair, Igor Alexandrov, Jiri Masik, Reinhard Männer, M. Seixas, Yasushi Nagasaka, Gabriella Gaudio, Hans Peter Beck, R. Spiwoks, J. V. Dawson, Mihai Caprini, A. Kootz, Gary Drake, Kostantinos Kordas, Andreas Kugel, P. Morettini, Enrico Pasqualucci, Yoshiji Yasu, Roberto Ferrari, B.J. Green, Nicolas Ellis, E. Thomas, Jos Vermeulen, T. Pauly, A. Gesualdi-Mello, Benedetto Gorini, E. Stefanidis, Alina Corso-Radu, V.J.O. Perera, M. Leahu, G. Crone, Royer Edson Ticse Torres, R. Cranfield, F. Parodi, Szymon Gadomski, T. Del Prete, C. Caramarcu, V. Perez-Reale, S. Kolos, M. Wiesmann, D. Prigent, Lamberto Luminari, J. Sloper, David Francis, C. Haeberli, Marcio Aparecido Muller, Rainer Stamen, S.R. Armstrong, A. Khomich, Mark D. Sutton, M. Della Pietra, Julie Kirk, Reiner Hauser, N.G. Unel, Aleandro Nisati, L. Leahu, I. Aracena, Fred Wickens, R.W. Dobinson, Martine Bosman, C. Lowe, Murrough Landon, M. L. Ferrer, C. Santamarina-Rios, V. M. Kotov, Erden Ertorer, Margherita Primavera, J. A. Strong, Antonio Sidoti, Krzysztof Korcyl, Kyle Cranmer, Andreas Warburton, G. Lehmann-Miotto, H. Garitaonandia, Livio Mapelli, L. Vaz Gil Lopes, G. Kieft, Denis Oliveira Damazio, Andrei Kazarov, W. Liu, M. Joos, James Pinfold, Z. Tarem, M. Le Vine, S. Gameiro, Francois Touchard, A. Ventura, Sergey V. Sushkov, Daniela Salvatore, R. Soluk, D. Burckhart-Chromek, A. Dos Anjos, S. Wheeler, B. G. Pope, C. Meessen, A. Di Mattia, M. Dobson, Nikolaos Konstantinidis, J.-O. Hansen, Valerio Vercesi, C. T. Potter, Serguei Sivoklokov, O. Gaumer, Tomasz Bold, N. Barros, W.N. Haberichter, M. Diaz-Gomaz, Sonia Kabana, N. Panikashvili, Xin Wu, António Amorim, T. Szymocha, K. Pretzl, Catalin Meirosu, Igor Soloviev, J. Petersen, Chiara Roda, S. Haas, Andrea Negri, G. Carlino, John Baines, T.R. McMahon, Per Werner, Simon George, Mingjian Yu, Carlo Schiavi, Roger Moore, Johannes Haller, Stefania Spagnolo, R. A. McLaren, B. Caron, Stefan Tapprogge, P. Teixeira-Dias, Massimiliano Bellomo, F. Marzano, S. J. Hillier, Christopher Bee, G. Kilvington, L. Tremblet, D. A. Scannicchio, Francesco Conventi, G. L. Usai, P. Conde-Muíño, Ingo Scholtes, Edoardo Gorini, B. Martin, Monika Wielers, A. De Santo, Alan Watson, A. Hocker, S. Stancu, E. E. Woehrling, Ricardo Gonçalo, E. Badescu, C. Padilla, M. Portes de Albuquerque, Werner Wiedenmann, A. J. Lankford, Michela Biglietti, Dmitry Emeliyanov, F. Zema, Tadashi Maeno, C. Osuna, J. A. Bogaerts, Diaz-Gomez, Manuel, Gaumer, Olivier, Wu, Xin, K., Korda, M., Abolin, I., Alexandrov, A., Amorim, I., Aracena, S., Armstrong, E., Badescu, J. T. M., Baine, N., Barro, H. P., Beck, C., Bee, M., Bellomo, M., Biglietti, R., Blair, J. A. C., Bogaert, T., Bold, M., Bosman, D., Burckhart Chromek, M., Caprini, C., Caramarcu, G., Carlino, B., Caron, M. P., Casado, G., Cataldi, M., Ciobotaru, G., Comune, P., Conde Muino, F., Conventi, A., Corso Radu, R., Cranfield, K., Cranmer, G., Crone, D., Damazio, J., Dawson, A., De Santo, T., Del Prete, M., Della Pietra, A., Di Mattia, M., Diaz Gomaz, R. W., Dobinson, M., Dobson, A., Dos Anjo, A., Dotti, G., Drake, N., Elli, D., Emeliyanov, Y., Ermoline, E., Ertorer, S., Falciano, R., Ferrari, M. L., Ferrer, D., Franci, S., Gadomski, S., Gameiro, H., Garitaonandia, G., Gaudio, O., Gaumer, S., George, A., Gesualdi Mello, R., Goncalo, B., Gorini, Gorini, Edoardo, B., Green, S., Haa, W. N., Haberichter, H., Hadavand, C., Haeberli, J., Haller, J., Hansen, R., Hauser, S. J., Hillier, A., Höcker, R. E., Hughes Jone, M., Joo, S., Kabana, A., Kazarov, A., Khomich, G., Kieft, G., Kilvington, J., Kirk, S., Klou, T., Kohno, S., Kolo, N., Konstantinidi, A., Kootz, K., Korcyl, V., Kotov, A., Kugel, M., Landon, A., Lankford, L., Leahu, M., Leahu, G., Lehmann Miotto, M. J., Le Vine, W., Liu, C., Lowe, L., Luminari, T., Maeno, R., Männer, L., Mapelli, B., Martin, F., Marzano, J., Masik, R., Mclaren, T., Mcmahon, C., Meessen, C., Meirosu, M., Mineev, A., Misiejuk, R., Moore, P., Morettini, G., Mornacchi, M., Müller, R., Murillo García, Y., Nagasaka, A., Negri, A., Nisati, C., Osuna, C., Padilla, N., Panikashvili, F., Parodi, E., Pasqualucci, T., Pauly, V., Perera, V., Pérez Réale, J., Petersen, J. L., Pinfold, B., Pope, M., Portes de Albuquerque, C., Potter, K., Pretzl, D., Prigent, Primavera, Margherita, P., Rheaum, S., Robertson, C., Roda, Y., Ryabov, D., Salvatore, C., Santamarina Rio, D. A., Scannicchio, C., Schiavi, J. L., Schlereth, I., Scholte, M., Seixa, A., Sidoti, S., Sivoklokov, J., Sloper, E., Sole Segura, I., Soloviev, R., Soluk, Spagnolo, Stefania Antonia, R., Spiwok, R., Stamen, S., Stancu, E., Stefanidi, J., Strong, S., Sushkov, M., Sutton, T., Szymocha, S., Tapprogge, S., Tarem, Z., Tarem, P., Teixeira Dia, E., Thoma, R., Torre, F., Touchard, L., Tremblet, N. G., Unel, G., Usai, B., Vachon, J., Van Wasen, W., Vandelli, L., Vaz Gil Lope, Ventura, Andrea, V., Vercesi, J., Vermeulen, H., von der Schmitt, A., Warburton, A., Watson, T., Wengler, P., Werner, S., Wheeler, F., Wicken, W., Wiedenmann, M., Wieler, M., Wiesmann, E. E., Woehrling, X., Wu, Y., Yasu, M., Yu, F., Zema, and H., Zobernig

Subjects
Nuclear and High Energy Physics, Data processing, High level trigger, Database, Atlas (topology), Project commissioning, Computer science, Data acquisition, ddc:500.2, ATLAS, computer.software_genre, Atomic and Molecular Physics, and Optics, Design for manufacturability, Data flow diagram, Trigger, Atlas data, Systems engineering, Detectors and Experimental Techniques, computer
Abstract

This article presents the base-line design and implementation of the ATLAS Trigger and Data Acquisition system, in particular the Data Flow and High Level Trigger components. The status of the installation and commissioning of the system is also presented.

Published
2007

42. Heavy ion observation with MIDORI satellite: trapped ACR

Author

I Yamagiwa, T. Kohno, T. Goka, Chihiro Kato, H Miyasaka, and Haruhisa Matsumoto

Subjects
Physics, Radiation, Meteorology, Astrophysics, Earth observation satellite, Ion, law.invention, On board, Telescope, Altitude, law, Physics::Space Physics, Satellite, Heavy ion, Astrophysics::Earth and Planetary Astrophysics, Instrumentation, Physics::Atmospheric and Oceanic Physics
Abstract

The Heavy Ion Telescope (HIT) on board the Japanese earth observation satellite MIDORI (ADEOS) has observed energetic heavy ions at the circular sun-synchronous orbit with an altitude of 800 km and an inclination of 98°. Geomagnetically trapped oxygen and nitrogen at L =2 are clearly observed which is similar to the results of SAMPEX. Their geographical distribution at a long belt from the southern tip of South America to that of Africa is also very close to the SAMPEX observation. The adiabaticity parameter ϵ max can be deduced as ≤0.1.

Published
1999
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44. The ATLAS Trigger Muon 'Vertical Slice'

Author

M. Bellomo, M. Biglietti, G. Carlino, G. Cataldi, F. Conventi, T. Del Prete, A. Di Mattia, S. Falciano, N. Kanaya, T. Kohno, A. Krasznahorkay, T. Lagouri, C. Luci, L. Luminari, F. Marzano, K. Nagano, A. Nisati, N. Panikashvili, E. Pasqualucci, D. A. Scannicchio, A. Sidoti, S. Tarem, Z. Tarem, K. Tokushuku, G. Usai, V. Vercesi, Y. Yamazaki, GORINI, Edoardo, PRIMAVERA, Margherita, SPAGNOLO, Stefania Antonia, VENTURA, Andrea, M., Bellomo, M., Biglietti, G., Carlino, G., Cataldi, F., Conventi, T., Del Prete, A., Di Mattia, S., Falciano, Gorini, Edoardo, N., Kanaya, T., Kohno, A., Krasznahorkay, T., Lagouri, C., Luci, L., Luminari, F., Marzano, K., Nagano, A., Nisati, N., Panikashvili, E., Pasqualucci, Primavera, Margherita, D. A., Scannicchio, A., Sidoti, Spagnolo, Stefania Antonia, S., Tarem, Z., Tarem, K., Tokushuku, G., Usai, Ventura, Andrea, V., Vercesi, and Y., Yamazaki

Subjects
Physics, Nuclear and High Energy Physics, Particle physics, Large Hadron Collider, Muon, Atlas (topology), Atlas detector, Physics::Instrumentation and Detectors, ATLAS, Vertical slice, Nuclear physics, Trigger, Physics::Accelerator Physics, High Energy Physics::Experiment, Detectors and Experimental Techniques, Instrumentation
Abstract

The muon trigger system is a fundamental component of the ATLAS detector at the LHC collider. In this paper we describe the ATLAS multi-level trigger selecting events with muons: the Muon Trigger Slice.

Published
2006

45. Thoracoscopic Removal of Middle Mediastinal Schwannoma Originating from Recurrent Nerve

Author

T. Yoshiya, K. Sasaki, Mingyon Mun, and T. Kohno

Subjects
Male, Pulmonary and Respiratory Medicine, medicine.medical_specialty, Encapsulated tumor, Recurrent nerve, Schwannoma, Mediastinal Neoplasms, medicine, Humans, Cranial Nerve Neoplasms, Vocal cord paralysis, Incidental Findings, Hoarseness, Recurrent Laryngeal Nerve, business.industry, Thoracoscopy, Mediastinal mass, Middle Aged, medicine.disease, Surgery, Mediastinal Schwannoma, Treatment Outcome, Cardiology and Cardiovascular Medicine, Tumor enucleation, business, Vocal Cord Paralysis, Neurilemmoma
Abstract

Schwannomas of the left recurrent nerve are rare and there is no agreement on how to manage them without causing recurrent nerve dysfunction. We present a 63-year-old male with unspecific clinical symptoms in whom a middle mediastinal mass with a diameter of 5 cm was found incidentally. At thoracoscopic surgery,we found that the encapsulated tumor originated from left recurrent nerve and we performed tumor enucleation without sacrificing the recurrent nerve. The patient did experience postoperative hoarseness and vocal cord paralysis even though we preserved the recurrent nerve. To our knowledge, thoracoscopic removal of a left recurrent nerve schwannoma has not been reported in the literature before.

Published
2008
Full Text
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46. A new tracking satellite-borne solar neutron detector

Author

Harufumi Tsuchiya, I. Imaida, A. Takase, Hironori Matsumoto, I. Tanaka, T. Hoshida, Hirokazu Ikeda, P. V. Ramanamurthy, T. Koi, M. Nakazawa, T. Omoto, Masayuki Fujii, K. Taguchi, Yutaka Matsubara, T. Goka, T. Kohno, Kimiaki Masuda, Takashi Sako, and Yasushi Muraki

Subjects
Physics, Nuclear and High Energy Physics, Photomultiplier, Scintillation, Physics::Instrumentation and Detectors, business.industry, Nuclear Theory, Detector, Tracking (particle physics), Optics, CMOS, Physics::Accelerator Physics, Neutron detection, High Energy Physics::Experiment, Neutron, Nuclear Experiment, business, Instrumentation, Beam (structure)
Abstract

A very compact solar neutron detector is made by using scintillation fiber and multi-anode photomultipliers. Signals from the 512 channels of the photomultipliers are read-out by CMOS circuitry which has been developed for a KEK B-factory experiment. The circuitry consumes only 5 W of power. The energy resolution for protons is obtained by exposing the detector to the RIKEN accelerator beam and it turns out to be 4.1% for protons at 95 MeV. The sensor will be used for observations on solar neutrons to elucidate the ion acceleration mechanism at the solar surface and also to provide information on-line to the cosmonauts about the impending arrival of strong radiations from the Sun.

Published
1999
Full Text
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47. Pitch angle distribution of He observed at 'MIDORI' satellite

Author

T. Goka, H Miyasaka, T. Kohno, Haruhisa Matsumoto, Kazuoki Munakata, I Yamagiwa, and Chihiro Kato

Subjects
Condensed Matter::Quantum Gases, Physics, Atmospheric Science, Distribution (number theory), business.industry, Aerospace Engineering, Astronomy and Astrophysics, Cosmic ray, Computational physics, Geographic distribution, Geophysics, Optics, Computer Science::Sound, Space and Planetary Science, General Earth and Planetary Sciences, Satellite, Physics::Atomic Physics, Pitch angle, business
Abstract

At the “MIDORI” satellite, trapped anomalous cosmic rays (ACRs) were observed that were consistent with prediction, and unexpected trapped He was also detected. We analyzed the pitch angle of these particles and found the pitch angle distribution of trapped He is different from that of trapped O, although these show a similar geographic distribution. The pitch angle distribution of He has its peak angle at ∼90 deg. but the peak angle of O is ∼100 deg.

Published
1999
Full Text
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48. Measurement of charm fragmentation ratios and fractions in photoproduction at HERA

Author

S. CHEKANOV, M. DERRICK, J. H. LOIZIDES, S. MAGILL, S. MIGLIORANZI, B. MUSGRAVE, J. REPOND, R. YOSHIDA, M. C. K. MATTINGLY, N. PAVEL, P. ANTONIOLI, G. BARI, L. BELLAGAMBA, D. BOSCHERINI, A. BRUNI, G. BRUNI, F. CINDOLO, M. CORRADI, P. GIUSTI, G. IACOBUCCI, A. MARGOTTI, A. MONTANARI, R. NANIA, S. DE PASQUALE, A. PESCI, G. CARA ROMEO, G. AGHUZUMTSYAN, D. BARTSCH, I. BROCK, S. GOERS, H. HARTMANN, E. HILGER, P. IRRGANG, H. P. JAKOB, O. KIND, U. MEYER, E. PAUL, J. RAUTENBERG, R. RENNER, A. STIFUTKIN, J. TANDLER, K. C. VOSS, M. WANG, D. S. BAILEY, N. H. BROOK, J. E. COLE, G. P. HEATH, T. NAMSOO, S. ROBINS, M. WING, M. CAPUA, A. MASTROBERARDINO, M. SCHIOPPA, G. SUSINNO, J. Y. KIM, I. T. LIM, K. J. MA, M. Y. PAC, M. HELBICH, Y. NING, Z. REN, W. B. SCHMIDKE, F. SCIULLI, J. CHWASTOWSKI, A. ESKREYS, J. FIGIEL, A. GALAS, K. OLKIEWICZ, P. STOPA, L. ZAWIEJSKI, L. ADAMCZYK, T. BOLD, I. GRABOWSKA BOLD, D. KISIELEWSKA, A. M. KOWAL, M. KOWAL, J. LUKASIK, M. PRZYBYCIEN, L. SUSZYCKI, D. SZUBA, J. SZUBA, A. KOTANSKI, W. SLOMINSKI, V. ADLER, U. BEHRENS, I. BLOCH, K. BORRAS, V. CHIOCHIA, D. DANNHEIM, G. DREWS, J. FOURLETOVA, U. FRICKE, A. GEISER, P. GOTTLICHER, O. GUTSCHE, T. HAAS, W. HAIN, S. HILLERT, C. HORN, B. KAHLE, U. KOTZ, H. KOWALSKI, G. KRAMBERGER, H. LABES, D. LELAS, H. LIM, B. LOHR, R. MANKEL, I. A. MELZER PELLMANN, C. N. NGUYEN, D. NOTZ, A. E. NUNCIO QUIROZ, A. POLINI, A. RAVAL, L. RURUA, U. SCHNEEKLOTH, U. STOSSLEIN, G. WOLF, C. YOUNGMAN, W. ZEUNER, S. SCHLENSTEDT, G. BARBAGLI, E. GALLO, C. GENTA, P. G. PELFER, A. BAMBERGER, A. BENEN, D. DOBUR, F. KARSTENS, N. N. VLASOV, M. BELL, P. J. BUSSEY, A. T. DOYLE, J. FERRANDO, J. HAMILTON, S. HANLON, D. H. SAXON, I. O. SKILLICORN, I. GIALAS, T. CARLI, T. GOSAU, U. HOLM, N. KRUMNACK, E. LOHRMANN, M. MILITE, H. SALEHI, P. SCHLEPER, T. SCHORNER SADENIUS, S. STONJEK, K. WICHMANN, K. WICK, A. ZIEGLER, A.R. ZIEGLER, C. COLLINS TOOTH, C. FOUDAS, R. GONCALO, K. R. LONG, A. D. TAPPER, P. CLOTH, D. FILGES, M. KATAOKA, K. NAGANO, K. TOKUSHUKU, S. YAMADA, Y. YAMAZAKI, A. N. BARAKBAEV, E. G. BOOS, N. S. POKROVSKIY, B. O. ZHAUTYKOV, D. SON, K. PIOTRZKOWSKI, F. BARREIRO, C. GLASMAN, O. GONZALEZ, L. LABARGA, J. DEL PESO, E. TASSI, J. TERRON, M. ZAMBRANA, M. BARBI, F. CORRIVEAU, S. GLIGA, J. LAINESSE, S. PADHI, D. G. STAIRS, R. WALSH, T. TSURUGAI, A. ANTONOV, P. DANILOV, B. A. DOLGOSHEIN, D. GLADKOV, V. SOSNOVTSEV, S. SUCHKOV, R. K. DEMENTIEV, P. F. ERMOLOV, I. I. KATKOV, L. A. KHEIN, I. A. KORZHAVINA, V. A. KUZMIN, B. B. LEVCHENKO, O. Y.U. LUKINA, A. S. PROSKURYAKOV, L. M. SHCHEGLOVA, S. A. ZOTKIN, I. ABT, C. BUTTNER, A. CALDWELL, X. LIU, J. SUTIAK, N. COPPOLA, S. GRIJPINK, E. KOFFEMAN, P. KOOIJMAN, E. MADDOX, A. PELLEGRINO, S. SCHAGEN, H. TIECKE, MONICA L. VAZQUEZ, L. WIGGERS, E. DE WOLF, N. BRUMMER, B. BYLSMA, L. S. DURKIN, T. Y. LING, A. M. COOPER SARKAR, A. COTTRELL, R. C. E. DEVENISH, B. FOSTER, G. GRZELAK, C. GWENLAN, T. KOHNO, S. PATEL, P. B. STRAUB, R. WALCZAK, A. BERTOLIN, R. BRUGNERA, R. CARLIN, F. DAL CORSO, S. DUSINI, A. GARFAGNINI, S. LIMENTANI, A. LONGHIN, A. PARENTI, M. POSOCCO, L. STANCO, M. TURCATO, E. A. HEAPHY, F. METLICA, B. Y. OH, J. J. WHITMORE, Y. IGA, G. D'AGOSTINI, G. MARINI, A. NIGRO, C. CORMACK, J. C. HART, N. A. MCCUBBIN, C. HEUSCH, I. H. PARK, H. ABRAMOWICZ, A. GABAREEN, S. KANANOV, A. KREISEL, A. LEVY, M. KUZE, T. FUSAYASU, S. KAGAWA, T. TAWARA, T. YAMASHITA, R. HAMATSU, T. HIROSE, M. INUZUKA, H. KAJI, S. KITAMURA, K. MATSUZAWA, M. COSTA, M. I. FERRERO, V. MONACO, R. SACCHI, A. SOLANO, M. ARNEODO, M. RUSPA, T. KOOP, J. F. MARTIN, A. MIREA, J. M. BUTTERWORTH, R. HALL WILTON, T. W. JONES, M. S. LIGHTWOOD, M. R. SUTTON, C. TARGETT ADAMS, J. CIBOROWSKI, R. CIESIELSKI, P. LUZNIAK, R. J. NOWAK, J. M. PAWLAK, J. SZTUK, T. TYMIENIECKA, A. UKLEJA, J. UKLEJA, A. F. ZARNECKI, M. ADAMUS, P. PLUCINSKI, Y. EISENBERG, D. HOCHMAN, U. KARSHON, M. RIVELINE, A. EVERETT, L. K. GLADILIN, D. KCIRA, S. LAMMERS, L. LI, D. D. REEDER, M. ROSIN, P. RYAN, A. A. SAVIN, W. H. SMITH, S. DHAWAN, S. BHADRA, C. D. CATTERALL, S. FOURLETOV, G. HARTNER, S. MENARY, M. SOARES, J. STANDAGE, BASILE, MAURIZIO, CIFARELLI, LUISA, CONTIN, ANDREA, PALMONARI, FEDERICO, RINALDI, LORENZO, SARTORELLI, GABRIELLA, ZICHICHI, ANTONINO, UCL, S. CHEKANOV, M. DERRICK, J.H. LOIZIDES, S. MAGILL, S. MIGLIORANZI, B. MUSGRAVE, J. REPOND, R. YOSHIDA, M.C.K. MATTINGLY, N. PAVEL, P. ANTONIOLI, G. BARI, M. BASILE, L. BELLAGAMBA, D. BOSCHERINI, A. BRUNI, G. BRUNI, L. CIFARELLI, F. CINDOLO, A. CONTIN, M. CORRADI, P. GIUSTI, G. IACOBUCCI, A. MARGOTTI, A. MONTANARI, R. NANIA, F. PALMONARI, S. DE PASQUALE, A. PESCI, L. RINALDI, G. CARA ROMEO, G. SARTORELLI, A. ZICHICHI, G. AGHUZUMTSYAN, D. BARTSCH, I. BROCK, S. GOERS, H. HARTMANN, E. HILGER, P. IRRGANG, H.-P. JAKOB, O. KIND, U. MEYER, E. PAUL, J. RAUTENBERG, R. RENNER, A. STIFUTKIN, J. TANDLER, K.C. VOSS, M. WANG, D.S. BAILEY, N.H. BROOK, J.E. COLE, G.P. HEATH, T. NAMSOO, S. ROBINS, M. WING, M. CAPUA, A. MASTROBERARDINO, M. SCHIOPPA, G. SUSINNO, J.Y. KIM, I.T. LIM, K.J. MA, M.Y. PAC, M. HELBICH, Y. NING, Z. REN, W.B. SCHMIDKE, F. SCIULLI, J. CHWASTOWSKI, A. ESKREYS, J. FIGIEL, A. GALAS, K. OLKIEWICZ, P. STOPA, L. ZAWIEJSKI, L. ADAMCZYK, T. BOLD, I. GRABOWSKA-BOLD, D. KISIELEWSKA, A.M. KOWAL, M. KOWAL, J. LUKASIK, M. PRZYBYCIEN, L. SUSZYCKI, D. SZUBA, J. SZUBA, A. KOTANSKI, W. SLOMINSKI, V. ADLER, U. BEHRENS, I. BLOCH, K. BORRAS, V. CHIOCHIA, D. DANNHEIM, G. DREWS, J. FOURLETOVA, U. FRICKE, A. GEISER, P. GOTTLICHER, O. GUTSCHE, T. HAAS, W. HAIN, S. HILLERT, C. HORN, B. KAHLE, U. KOTZ, H. KOWALSKI, G. KRAMBERGER, H. LABES, D. LELAS, H. LIM, B. LOHR, R. MANKEL, I.-A. MELZER-PELLMANN, C.N. NGUYEN, D. NOTZ, A.E. NUNCIO-QUIROZ, A. POLINI, A. RAVAL, L. RURUA, U. SCHNEEKLOTH, U. STOSSLEIN, G. WOLF, C. YOUNGMAN, W. ZEUNER, S. SCHLENSTEDT, G. BARBAGLI, E. GALLO, C. GENTA, P. G. PELFER, A. BAMBERGER, A. BENEN, D. DOBUR, F. KARSTENS, N.N. VLASOV, M. BELL, P.J. BUSSEY, A.T. DOYLE, J. FERRANDO, J. HAMILTON, S. HANLON, D.H. SAXON, I.O. SKILLICORN, I. GIALAS, T. CARLI, T. GOSAU, U. HOLM, N. KRUMNACK, E. LOHRMANN, M. MILITE, H. SALEHI, P. SCHLEPER, T. SCHORNER-SADENIUS, S. STONJEK, K. WICHMANN, K. WICK, A. ZIEGLER, AR. ZIEGLER, C. COLLINS-TOOTH, C. FOUDAS, R. GONCALO, K.R. LONG, A.D. TAPPER, P. CLOTH, D. FILGES, M. KATAOKA, K. NAGANO, K. TOKUSHUKU, S. YAMADA, Y. YAMAZAKI, A.N. BARAKBAEV, E.G. BOOS, N.S. POKROVSKIY, B.O. ZHAUTYKOV, D. SON, K. PIOTRZKOWSKI, F. BARREIRO, C. GLASMAN, O. GONZALEZ, L. LABARGA, J. DEL PESO, E. TASSI, J. TERRON, M. ZAMBRANA, M. BARBI, F. CORRIVEAU, S. GLIGA, J. LAINESSE, S. PADHI, D.G. STAIRS, R. WALSH, T. TSURUGAI, A. ANTONOV, P. DANILOV, B.A. DOLGOSHEIN, D. GLADKOV, V. SOSNOVTSEV, S. SUCHKOV, R.K. DEMENTIEV, P.F. ERMOLOV, I.I. KATKOV, L.A. KHEIN, I.A. KORZHAVINA, V.A. KUZMIN, B.B. LEVCHENKO, O.YU. LUKINA, A.S. PROSKURYAKOV, L.M. SHCHEGLOVA, S.A. ZOTKIN, I. ABT, C. BUTTNER, A. CALDWELL, X. LIU, J. SUTIAK, N. COPPOLA, S. GRIJPINK, E. KOFFEMAN, P. KOOIJMAN, E. MADDOX, A. PELLEGRINO, S. SCHAGEN, H. TIECKE, MONICA L. VAZQUEZ, L. WIGGERS, E. DE WOLF, N. BRUMMER, B. BYLSMA, L.S. DURKIN, T.Y. LING, A.M. COOPER-SARKAR, A. COTTRELL, R.C.E. DEVENISH, B. FOSTER, G. GRZELAK, C. GWENLAN, T. KOHNO, S. PATEL, P.B. STRAUB, R. WALCZAK, A. BERTOLIN, R. BRUGNERA, R. CARLIN, F. DAL CORSO, S. DUSINI, A. GARFAGNINI, S. LIMENTANI, A. LONGHIN, A. PARENTI, M. POSOCCO, L. STANCO, M. TURCATO, E.A. HEAPHY, F. METLICA, B.Y. OH, J.J. WHITMORE, Y. IGA, G. D'AGOSTINI, G. MARINI, A. NIGRO, C. CORMACK, J.C. HART, N.A. MCCUBBIN, C. HEUSCH, I.H. PARK, H. ABRAMOWICZ, A. GABAREEN, S. KANANOV, A. KREISEL, A. LEVY, M. KUZE, T. FUSAYASU, S. KAGAWA, T. TAWARA, T. YAMASHITA, R. HAMATSU, T. HIROSE, M. INUZUKA, H. KAJI, S. KITAMURA, K. MATSUZAWA, M. COSTA, M.I. FERRERO, V. MONACO, R. SACCHI, A. SOLANO, M. ARNEODO, M. RUSPA, T. KOOP, J.F. MARTIN, A. MIREA, J.M. BUTTERWORTH, R. HALL-WILTON, T.W. JONES, M.S. LIGHTWOOD, M.R. SUTTON, C. TARGETT-ADAMS, J. CIBOROWSKI, R. CIESIELSKI, P. LUZNIAK, R.J. NOWAK, J.M. PAWLAK, J. SZTUK, T. TYMIENIECKA, A. UKLEJA, J. UKLEJA, A.F. ZARNECKI, M. ADAMUS, P. PLUCINSKI, Y. EISENBERG, D. HOCHMAN, U. KARSHON, M. RIVELINE, A. EVERETT, L.K. GLADILIN, D. KCIRA, S. LAMMERS, L. LI, D.D. REEDER, M. ROSIN, P. RYAN, A.A. SAVIN, W.H. SMITH, S. DHAWAN, S. BHADRA, C.D. CATTERALL, S. FOURLETOV, G. HARTNER, S. MENARY, M. SOARES, and J. STANDAGE

Subjects
Particle physics, Physics and Astronomy (miscellaneous), LUND MONTE-CARLO, HERA, FOS: Physical sciences, High Energy Physics, ZEUS Collaboration, DEEP INELASTIC-SCATTERING, CENTRAL TRACKING DETECTOR, ZEUS BARREL CALORIMETER, JET FRAGMENTATION, HADRON PRODUCTION, cross sections, EP-COLLISIONS, PARTON DISTRIBUTIONS, 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), 0103 physical sciences, Charm (quantum number), Nuclear Experiment, 010306 general physics, Engineering (miscellaneous), Physics, ZEUS (particle detector), 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Fragmentation (computing), Deep inelastic scattering, High Energy Physics::Experiment
Abstract

The production of D^*+, D^0, D^+, D_s^+ and Lambda_c^+ charm hadrons and their antiparticles in ep scattering at HERA was measured with the ZEUS detector using an integrated luminosity of 79 pb^-1. The measurement has been performed in the photoproduction regime with the exchanged-photon virtuality Q^2 < 1 GeV^2 and for photon-proton centre-of-mass energies in the range 130 < W < 300 GeV. The charm hadrons were reconstructed in the range of transverse momentum p_T(D, Lambda_c) > 3.8 GeV and pseudorapidity |eta(D, Lambda_c)| < 1.6. The production cross sections were used to determine the ratio of neutral and charged D-meson production rates, R_u/d, the strangeness-suppression factor, gamma_s, and the fraction of charged D mesons produced in a vector state, P_v^d. The measured R_u/d and gamma_s values agree with those obtained in deep inelastic scattering and in e^+e^- annihilations. The measured P_v^d value is smaller than, but consistent with, the previous measurements. The fractions of c quarks hadronising as a particular charm hadron, f(c -> D, Lambda_c), were derived in the given kinematic range. The measured open-charm fragmentation fractions are consistent with previous results, although the measured f(c -> D^*+) is smaller and f(c -> Lambda_c^+) is larger than those obtained in e^+e^- annihilations. These results generally support the hypothesis that fragmentation proceeds independently of the hard sub-process., 29 pages, 5 figures, 6 tables; minor text revisions

Published
2005

49. An NLO QCD analysis of inclusive cross-section and jet-production data from the ZEUS experiment

Author

S. CHEKANOV, M. DERRICK, J. H. LOIZIDES, S. MAGILL, S. MIGLIORANZI, B. MUSGRAVE, J. REPOND, R. YOSHIDA, M. C. K. MATTINGLY, N. PAVEL, P. ANTONIOLI, G. BARI, L. BELLAGAMBA, D. BOSCHERINI, A. BRUNI, G. BRUNI, F. CINDOLO, M. CORRADI, P. GIUSTI, G. IACOBUCCI, A. MARGOTTI, A. MONTANARI, R. NANIA, S. DE PASQUALE, A. PESCI, G. CARA ROMEO, G. AGHUZUMTSYAN, D. BARTSCH, I. BROCK, S. GOERS, H. HARTMANN, E. HILGER, P. IRRGANG, H. P. JAKOB, O. KIND, U. MEYER, E. PAUL, J. RAUTENBERG, R. RENNER, A. STIFUTKIN, J. TANDLER, K. C. VOSS, M. WANG, D. S. BAILEY, N. H. BROOK, J. E. COLE, G. P. HEATH, T. NAMSOO, S. ROBINS, M. WING, M. CAPUA, A. MASTROBERARDINO, M. SCHIOPPA, G. SUSINNO, J. Y. KIM, I. T. LIM, K. J. MA, M. Y. PAC, M. HELBICH, Y. NING, Z. REN, W. B. SCHMIDKE, F. SCIULLI, J. CHWASTOWSKI, A. ESKREYS, J. FIGIEL, A. GALAS, K. OLKIEWICZ, P. STOPA, L. ZAWIEJSKI, L. ADAMCZYK, T. BOLD, I. GRABOWSKA BOLD, D. KISIELEWSKA, A. M. KOWAL, M. KOWAL, J. LUKASIK, M. PRZYBYCIEN, L. SUSZYCKI, D. SZUBA, J. SZUBA, A. KOTANSKI, W. SLOMINSKI, V. ADLER, U. BEHRENS, I. BLOCH, K. BORRAS, V. CHIOCHIA, D. DANNHEIM, G. DREWS, J. FOURLETOVA, U. FRICKE, A. GEISER, P. GOTTLICHER, O. GUTSCHE, T. HAAS, W. HAIN, S. HILLERT, C. HORN, B. KAHLE, U. KOTZ, H. KOWALSKI, G. KRAMBERGER, H. LABES, D. LELAS, H. LIM, B. LOHR, R. MANKEL, I. A. MELZER PELLMANN, C. N. NGUYEN, D. NOTZ, A. E. NUNCIO QUIROZ, A. POLINI, A. RAVAL, L. RURUA, U. SCHNEEKLOTH, U. STOSSLEIN, G. WOLF, C. YOUNGMAN, W. ZEUNER, S. SCHLENSTEDT, G. BARBAGLI, E. GALLO, C. GENTA, P. G. PELFER, A. BAMBERGER, A. BENEN, D. DOBUR, F. KARSTENS, N. N. VLASOV, M. BELL, P. J. BUSSEY, A. T. DOYLE, J. FERRANDO, J. HAMILTON, S. HANLON, D. H. SAXON, I. O. SKILLICORN, I. GIALAS, T. CARLI, T. GOSAU, U. HOLM, N. KRUMNACK, E. LOHRMANN, M. MILITE, H. SALEHI, P. SCHLEPER, T. SCHORNER SADENIUS, S. STONJEK, K. WICHMANN, K. WICK, A. ZIEGLER, A.R. ZIEGLER, C. COLLINS TOOTH, C. FOUDAS, R. GONCALO, K. R. LONG, A. D. TAPPER, P. CLOTH, D. FILGES, M. KATAOKA, K. NAGANO, K. TOKUSHUKU, S. YAMADA, Y. YAMAZAKI, A. N. BARAKBAEV, E. G. BOOS, N. S. POKROVSKIY, B. O. ZHAUTYKOV, D. SON, K. PIOTRZKOWSKI, F. BARREIRO, C. GLASMAN, O. GONZALEZ, L. LABARGA, J. DEL PESO, E. TASSI, J. TERRON, M. ZAMBRANA, M. BARBI, F. CORRIVEAU, S. GLIGA, J. LAINESSE, S. PADHI, D. G. STAIRS, R. WALSH, T. TSURUGAI, A. ANTONOV, P. DANILOV, B. A. DOLGOSHEIN, D. GLADKOV, V. SOSNOVTSEV, S. SUCHKOV, R. K. DEMENTIEV, P. F. ERMOLOV, I. I. KATKOV, L. A. KHEIN, I. A. KORZHAVINA, V. A. KUZMIN, B. B. LEVCHENKO, O. Y.U. LUKINA, A. S. PROSKURYAKOV, L. M. SHCHEGLOVA, S. A. ZOTKIN, I. ABT, C. BUTTNER, A. CALDWELL, X. LIU, J. SUTIAK, N. COPPOLA, S. GRIJPINK, E. KOFFEMAN, P. KOOIJMAN, E. MADDOX, A. PELLEGRINO, S. SCHAGEN, H. TIECKE, MONICA L. VAZQUEZ, L. WIGGERS, E. DE WOLF, N. BRUMMER, B. BYLSMA, L. S. DURKIN, T. Y. LING, A. M. COOPER SARKAR, A. COTTRELL, R. C. E. DEVENISH, B. FOSTER, G. GRZELAK, C. GWENLAN, T. KOHNO, S. PATEL, P. B. STRAUB, R. WALCZAK, A. BERTOLIN, R. BRUGNERA, R. CARLIN, F. DAL CORSO, S. DUSINI, A. GARFAGNINI, S. LIMENTANI, A. LONGHIN, A. PARENTI, M. POSOCCO, L. STANCO, M. TURCATO, E. A. HEAPHY, F. METLICA, B. Y. OH, J. J. WHITMORE, Y. IGA, G. D'AGOSTINI, G. MARINI, A. NIGRO, C. CORMACK, J. C. HART, N. A. MCCUBBIN, C. HEUSCH, I. H. PARK, H. ABRAMOWICZ, A. GABAREEN, S. KANANOV, A. KREISEL, A. LEVY, M. KUZE, T. FUSAYASU, S. KAGAWA, T. TAWARA, T. YAMASHITA, R. HAMATSU, T. HIROSE, M. INUZUKA, H. KAJI, S. KITAMURA, K. MATSUZAWA, M. COSTA, M. I. FERRERO, V. MONACO, R. SACCHI, A. SOLANO, M. ARNEODO, M. RUSPA, T. KOOP, J. F. MARTIN, A. MIREA, J. M. BUTTERWORTH, R. HALL WILTON, T. W. JONES, M. S. LIGHTWOOD, M. R. SUTTON, C. TARGETT ADAMS, J. CIBOROWSKI, R. CIESIELSKI, P. LUZNIAK, R. J. NOWAK, J. M. PAWLAK, J. SZTUK, T. TYMIENIECKA, A. UKLEJA, J. UKLEJA, A. F. ZARNECKI, M. ADAMUS, P. PLUCINSKI, Y. EISENBERG, D. HOCHMAN, U. KARSHON, M. RIVELINE, A. EVERETT, L. K. GLADILIN, D. KCIRA, S. LAMMERS, L. LI, D. D. REEDER, M. ROSIN, P. RYAN, A. A. SAVIN, W. H. SMITH, S. DHAWAN, S. BHADRA, C. D. CATTERALL, S. FOURLETOV, G. HARTNER, S. MENARY, M. SOARES, J. STANDAGE, BASILE, MAURIZIO, CIFARELLI, LUISA, CONTIN, ANDREA, PALMONARI, FEDERICO, RINALDI, LORENZO, SARTORELLI, GABRIELLA, ZICHICHI, ANTONINO, S. CHEKANOV, M. DERRICK, J.H. LOIZIDES, S. MAGILL, S. MIGLIORANZI, B. MUSGRAVE, J. REPOND, R. YOSHIDA, M.C.K. MATTINGLY, N. PAVEL, P. ANTONIOLI, G. BARI, M. BASILE, L. BELLAGAMBA, D. BOSCHERINI, A. BRUNI, G. BRUNI, L. CIFARELLI, F. CINDOLO, A. CONTIN, M. CORRADI, P. GIUSTI, G. IACOBUCCI, A. MARGOTTI, A. MONTANARI, R. NANIA, F. PALMONARI, S. DE PASQUALE, A. PESCI, L. RINALDI, G. CARA ROMEO, G. SARTORELLI, A. ZICHICHI, G. AGHUZUMTSYAN, D. BARTSCH, I. BROCK, S. GOERS, H. HARTMANN, E. HILGER, P. IRRGANG, H.-P. JAKOB, O. KIND, U. MEYER, E. PAUL, J. RAUTENBERG, R. RENNER, A. STIFUTKIN, J. TANDLER, K.C. VOSS, M. WANG, D.S. BAILEY, N.H. BROOK, J.E. COLE, G.P. HEATH, T. NAMSOO, S. ROBINS, M. WING, M. CAPUA, A. MASTROBERARDINO, M. SCHIOPPA, G. SUSINNO, J.Y. KIM, I.T. LIM, K.J. MA, M.Y. PAC, M. HELBICH, Y. NING, Z. REN, W.B. SCHMIDKE, F. SCIULLI, J. CHWASTOWSKI, A. ESKREYS, J. FIGIEL, A. GALAS, K. OLKIEWICZ, P. STOPA, L. ZAWIEJSKI, L. ADAMCZYK, T. BOLD, I. GRABOWSKA-BOLD, D. KISIELEWSKA, A.M. KOWAL, M. KOWAL, J. LUKASIK, M. PRZYBYCIEN, L. SUSZYCKI, D. SZUBA, J. SZUBA, A. KOTANSKI, W. SLOMINSKI, V. ADLER, U. BEHRENS, I. BLOCH, K. BORRAS, V. CHIOCHIA, D. DANNHEIM, G. DREWS, J. FOURLETOVA, U. FRICKE, A. GEISER, P. GOTTLICHER, O. GUTSCHE, T. HAAS, W. HAIN, S. HILLERT, C. HORN, B. KAHLE, U. KOTZ, H. KOWALSKI, G. KRAMBERGER, H. LABES, D. LELAS, H. LIM, B. LOHR, R. MANKEL, I.-A. MELZER-PELLMANN, C.N. NGUYEN, D. NOTZ, A.E. NUNCIO-QUIROZ, A. POLINI, A. RAVAL, L. RURUA, U. SCHNEEKLOTH, U. STOSSLEIN, G. WOLF, C. YOUNGMAN, W. ZEUNER, S. SCHLENSTEDT, G. BARBAGLI, E. GALLO, C. GENTA, P. G. PELFER, A. BAMBERGER, A. BENEN, D. DOBUR, F. KARSTENS, N.N. VLASOV, M. BELL, P.J. BUSSEY, A.T. DOYLE, J. FERRANDO, J. HAMILTON, S. HANLON, D.H. SAXON, I.O. SKILLICORN, I. GIALAS, T. CARLI, T. GOSAU, U. HOLM, N. KRUMNACK, E. LOHRMANN, M. MILITE, H. SALEHI, P. SCHLEPER, T. SCHORNER-SADENIUS, S. STONJEK, K. WICHMANN, K. WICK, A. ZIEGLER, AR. ZIEGLER, C. COLLINS-TOOTH, C. FOUDAS, R. GONCALO, K.R. LONG, A.D. TAPPER, P. CLOTH, D. FILGES, M. KATAOKA, K. NAGANO, K. TOKUSHUKU, S. YAMADA, Y. YAMAZAKI, A.N. BARAKBAEV, E.G. BOOS, N.S. POKROVSKIY, B.O. ZHAUTYKOV, D. SON, K. PIOTRZKOWSKI, F. BARREIRO, C. GLASMAN, O. GONZALEZ, L. LABARGA, J. DEL PESO, E. TASSI, J. TERRON, M. ZAMBRANA, M. BARBI, F. CORRIVEAU, S. GLIGA, J. LAINESSE, S. PADHI, D.G. STAIRS, R. WALSH, T. TSURUGAI, A. ANTONOV, P. DANILOV, B.A. DOLGOSHEIN, D. GLADKOV, V. SOSNOVTSEV, S. SUCHKOV, R.K. DEMENTIEV, P.F. ERMOLOV, I.I. KATKOV, L.A. KHEIN, I.A. KORZHAVINA, V.A. KUZMIN, B.B. LEVCHENKO, O.YU. LUKINA, A.S. PROSKURYAKOV, L.M. SHCHEGLOVA, S.A. ZOTKIN, I. ABT, C. BUTTNER, A. CALDWELL, X. LIU, J. SUTIAK, N. COPPOLA, S. GRIJPINK, E. KOFFEMAN, P. KOOIJMAN, E. MADDOX, A. PELLEGRINO, S. SCHAGEN, H. TIECKE, MONICA L. VAZQUEZ, L. WIGGERS, E. DE WOLF, N. BRUMMER, B. BYLSMA, L.S. DURKIN, T.Y. LING, A.M. COOPER-SARKAR, A. COTTRELL, R.C.E. DEVENISH, B. FOSTER, G. GRZELAK, C. GWENLAN, T. KOHNO, S. PATEL, P.B. STRAUB, R. WALCZAK, A. BERTOLIN, R. BRUGNERA, R. CARLIN, F. DAL CORSO, S. DUSINI, A. GARFAGNINI, S. LIMENTANI, A. LONGHIN, A. PARENTI, M. POSOCCO, L. STANCO, M. TURCATO, E.A. HEAPHY, F. METLICA, B.Y. OH, J.J. WHITMORE, Y. IGA, G. D'AGOSTINI, G. MARINI, A. NIGRO, C. CORMACK, J.C. HART, N.A. MCCUBBIN, C. HEUSCH, I.H. PARK, H. ABRAMOWICZ, A. GABAREEN, S. KANANOV, A. KREISEL, A. LEVY, M. KUZE, T. FUSAYASU, S. KAGAWA, T. TAWARA, T. YAMASHITA, R. HAMATSU, T. HIROSE, M. INUZUKA, H. KAJI, S. KITAMURA, K. MATSUZAWA, M. COSTA, M.I. FERRERO, V. MONACO, R. SACCHI, A. SOLANO, M. ARNEODO, M. RUSPA, T. KOOP, J.F. MARTIN, A. MIREA, J.M. BUTTERWORTH, R. HALL-WILTON, T.W. JONES, M.S. LIGHTWOOD, M.R. SUTTON, C. TARGETT-ADAMS, J. CIBOROWSKI, R. CIESIELSKI, P. LUZNIAK, R.J. NOWAK, J.M. PAWLAK, J. SZTUK, T. TYMIENIECKA, A. UKLEJA, J. UKLEJA, A.F. ZARNECKI, M. ADAMUS, P. PLUCINSKI, Y. EISENBERG, D. HOCHMAN, U. KARSHON, M. RIVELINE, A. EVERETT, L.K. GLADILIN, D. KCIRA, S. LAMMERS, L. LI, D.D. REEDER, M. ROSIN, P. RYAN, A.A. SAVIN, W.H. SMITH, S. DHAWAN, S. BHADRA, C.D. CATTERALL, S. FOURLETOV, G. HARTNER, S. MENARY, M. SOARES, and J. STANDAGE

Subjects
Particle physics, Physics and Astronomy (miscellaneous), HERA, FOS: Physical sciences, Parton, Jet (particle physics), 01 natural sciences, High Energy Physics - Experiment, Nuclear physics, High Energy Physics - Experiment (hep-ex), High Energy Physics, ZEUS Collaboration, High Energy Physics - Phenomenology (hep-ph), 0103 physical sciences, 010306 general physics, Engineering (miscellaneous), Charged current, Quantum chromodynamics, Physics, ZEUS (particle detector), 010308 nuclear & particles physics, High Energy Physics::Phenomenology, Deep inelastic scattering, Gluon, High Energy Physics - Phenomenology, High Energy Physics::Experiment
Abstract

The ZEUS inclusive differential cross-section data from HERA, for charged and neutral current processes taken with e+ and e- beams, together with differential cross-section data on inclusive jet production in e+ p scattering and dijet production in \gamma p scattering, have been used in a new NLO QCD analysis to extract the parton distribution functions of the proton. The input of jet data constrains the gluon and allows an accurate extraction of \alpha_s(M_Z) at NLO; \alpha_s(M_Z) = 0.1183 \pm 0.0028(exp.) \pm 0.0008(model) An additional uncertainty from the choice of scales is estimated as \pm 0.005. This is the first extraction of \alpha_s(M_Z) from HERA data alone., Comment: 37 pages, 14 figures, to be submitted to EPJC. PDFs available at http://durpdg.dur.ac.uk/hepdata in LHAPDFv4

Published
2005
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50. Search for lepton-flavor violation at HERA

Author

S. CHEKANOV, M. DERRICK, J. H. LOIZIDES, S. MAGILL, S. MIGLIORANZI, B. MUSGRAVE, J. REPOND, R. YOSHIDA, M. C. K. MATTINGLY, N. PAVEL, P. ANTONIOLI, G. BARI, L. BELLAGAMBA, D. BOSCHERINI, A. BRUNI, G. BRUNI, F. CINDOLO, M. CORRADI, P. GIUSTI, G. IACOBUCCI, A. MARGOTTI, A. MONTANARI, R. NANIA, S. DE PASQUALE, A. PESCI, G. CARA ROMEO, G. AGHUZUMTSYAN, D. BARTSCH, I. BROCK, S. GOERS, H. HARTMANN, E. HILGER, P. IRRGANG, H. P. JAKOB, O. KIND, U. MEYER, E. PAUL, J. RAUTENBERG, R. RENNER, A. STIFUTKIN, J. TANDLER, K. C. VOSS, M. WANG, D. S. BAILEY, N. H. BROOK, J. E. COLE, G. P. HEATH, T. NAMSOO, S. ROBINS, M. WING, M. CAPUA, A. MASTROBERARDINO, M. SCHIOPPA, G. SUSINNO, J. Y. KIM, I. T. LIM, K. J. MA, M. Y. PAC, M. HELBICH, Y. NING, Z. REN, W. B. SCHMIDKE, F. SCIULLI, J. CHWASTOWSKI, A. ESKREYS, J. FIGIEL, A. GALAS, K. OLKIEWICZ, P. STOPA, L. ZAWIEJSKI, L. ADAMCZYK, T. BOLD, I. GRABOWSKA BOLD, D. KISIELEWSKA, A. M. KOWAL, M. KOWAL, J. LUKASIK, M. PRZYBYCIEN, L. SUSZYCKI, D. SZUBA, J. SZUBA, A. KOTANSKI, W. SLOMINSKI, V. ADLER, U. BEHRENS, I. BLOCH, K. BORRAS, V. CHIOCHIA, D. DANNHEIM, G. DREWS, J. FOURLETOVA, U. FRICKE, A. GEISER, P. GOTTLICHER, O. GUTSCHE, T. HAAS, W. HAIN, S. HILLERT, C. HORN, B. KAHLE, U. KOTZ, H. KOWALSKI, G. KRAMBERGER, H. LABES, D. LELAS, H. LIM, B. LOHR, R. MANKEL, I. A. MELZER PELLMANN, C. N. NGUYEN, D. NOTZ, A. E. NUNCIO QUIROZ, A. POLINI, A. RAVAL, L. RURUA, U. SCHNEEKLOTH, U. STOSSLEIN, G. WOLF, C. YOUNGMAN, W. ZEUNER, S. SCHLENSTEDT, G. BARBAGLI, E. GALLO, C. GENTA, P. G. PELFER, A. BAMBERGER, A. BENEN, D. DOBUR, F. KARSTENS, N. N. VLASOV, M. BELL, P. J. BUSSEY, A. T. DOYLE, J. FERRANDO, J. HAMILTON, S. HANLON, D. H. SAXON, I. O. SKILLICORN, I. GIALAS, T. CARLI, T. GOSAU, U. HOLM, N. KRUMNACK, E. LOHRMANN, M. MILITE, H. SALEHI, P. SCHLEPER, T. SCHORNER SADENIUS, S. STONJEK, K. WICHMANN, K. WICK, A. ZIEGLER, A.R. ZIEGLER, C. COLLINS TOOTH, C. FOUDAS, R. GONCALO, K. R. LONG, A. D. TAPPER, P. CLOTH, D. FILGES, M. KATAOKA, K. NAGANO, K. TOKUSHUKU, S. YAMADA, Y. YAMAZAKI, A. N. BARAKBAEV, E. G. BOOS, N. S. POKROVSKIY, B. O. ZHAUTYKOV, D. SON, K. PIOTRZKOWSKI, F. BARREIRO, C. GLASMAN, O. GONZALEZ, L. LABARGA, J. DEL PESO, E. TASSI, J. TERRON, M. ZAMBRANA, M. BARBI, F. CORRIVEAU, S. GLIGA, J. LAINESSE, S. PADHI, D. G. STAIRS, R. WALSH, T. TSURUGAI, A. ANTONOV, P. DANILOV, B. A. DOLGOSHEIN, D. GLADKOV, V. SOSNOVTSEV, S. SUCHKOV, R. K. DEMENTIEV, P. F. ERMOLOV, I. I. KATKOV, L. A. KHEIN, I. A. KORZHAVINA, V. A. KUZMIN, B. B. LEVCHENKO, O. Y.U. LUKINA, A. S. PROSKURYAKOV, L. M. SHCHEGLOVA, S. A. ZOTKIN, I. ABT, C. BUTTNER, A. CALDWELL, X. LIU, J. SUTIAK, N. COPPOLA, S. GRIJPINK, E. KOFFEMAN, P. KOOIJMAN, E. MADDOX, A. PELLEGRINO, S. SCHAGEN, H. TIECKE, MONICA L. VAZQUEZ, L. WIGGERS, E. DE WOLF, N. BRUMMER, B. BYLSMA, L. S. DURKIN, T. Y. LING, A. M. COOPER SARKAR, A. COTTRELL, R. C. E. DEVENISH, B. FOSTER, G. GRZELAK, C. GWENLAN, T. KOHNO, S. PATEL, P. B. STRAUB, R. WALCZAK, A. BERTOLIN, R. BRUGNERA, R. CARLIN, F. DAL CORSO, S. DUSINI, A. GARFAGNINI, S. LIMENTANI, A. LONGHIN, A. PARENTI, M. POSOCCO, L. STANCO, M. TURCATO, E. A. HEAPHY, F. METLICA, B. Y. OH, J. J. WHITMORE, Y. IGA, G. D'AGOSTINI, G. MARINI, A. NIGRO, C. CORMACK, J. C. HART, N. A. MCCUBBIN, C. HEUSCH, I. H. PARK, H. ABRAMOWICZ, A. GABAREEN, S. KANANOV, A. KREISEL, A. LEVY, M. KUZE, T. FUSAYASU, S. KAGAWA, T. TAWARA, T. YAMASHITA, R. HAMATSU, T. HIROSE, M. INUZUKA, H. KAJI, S. KITAMURA, K. MATSUZAWA, M. COSTA, M. I. FERRERO, V. MONACO, R. SACCHI, A. SOLANO, M. ARNEODO, M. RUSPA, T. KOOP, J. F. MARTIN, A. MIREA, J. M. BUTTERWORTH, R. HALL WILTON, T. W. JONES, M. S. LIGHTWOOD, M. R. SUTTON, C. TARGETT ADAMS, J. CIBOROWSKI, R. CIESIELSKI, P. LUZNIAK, R. J. NOWAK, J. M. PAWLAK, J. SZTUK, T. TYMIENIECKA, A. UKLEJA, J. UKLEJA, A. F. ZARNECKI, M. ADAMUS, P. PLUCINSKI, Y. EISENBERG, D. HOCHMAN, U. KARSHON, M. RIVELINE, A. EVERETT, L. K. GLADILIN, D. KCIRA, S. LAMMERS, L. LI, D. D. REEDER, M. ROSIN, P. RYAN, A. A. SAVIN, W. H. SMITH, S. DHAWAN, S. BHADRA, C. D. CATTERALL, S. FOURLETOV, G. HARTNER, S. MENARY, M. SOARES, J. STANDAGE, BASILE, MAURIZIO, CIFARELLI, LUISA, CONTIN, ANDREA, PALMONARI, FEDERICO, RINALDI, LORENZO, SARTORELLI, GABRIELLA, ZICHICHI, ANTONINO, UCL, S. CHEKANOV, M. DERRICK, J.H. LOIZIDES, S. MAGILL, S. MIGLIORANZI, B. MUSGRAVE, J. REPOND, R. YOSHIDA, M.C.K. MATTINGLY, N. PAVEL, P. ANTONIOLI, G. BARI, M. BASILE, L. BELLAGAMBA, D. BOSCHERINI, A. BRUNI, G. BRUNI, L. CIFARELLI, F. CINDOLO, A. CONTIN, M. CORRADI, P. GIUSTI, G. IACOBUCCI, A. MARGOTTI, A. MONTANARI, R. NANIA, F. PALMONARI, S. DE PASQUALE, A. PESCI, L. RINALDI, G. CARA ROMEO, G. SARTORELLI, A. ZICHICHI, G. AGHUZUMTSYAN, D. BARTSCH, I. BROCK, S. GOERS, H. HARTMANN, E. HILGER, P. IRRGANG, H.-P. JAKOB, O. KIND, U. MEYER, E. PAUL, J. RAUTENBERG, R. RENNER, A. STIFUTKIN, J. TANDLER, K.C. VOSS, M. WANG, D.S. BAILEY, N.H. BROOK, J.E. COLE, G.P. HEATH, T. NAMSOO, S. ROBINS, M. WING, M. CAPUA, A. MASTROBERARDINO, M. SCHIOPPA, G. SUSINNO, J.Y. 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Subjects
Quark, Particle physics, Physics and Astronomy (miscellaneous), High Energy Physics::Lattice, HERA, FOS: Physical sciences, Lambda, 01 natural sciences, DECAYS, CROSS-SECTIONS, High Energy Physics - Experiment, Nuclear physics, DEEP-INELASTIC SCATTERING, High Energy Physics - Experiment (hep-ex), High Energy Physics, ZEUS Collaboration, EP COLLISIONS, 0103 physical sciences, EVENT GENERATOR, 010306 general physics, Engineering (miscellaneous), Event generator, Physics, Coupling constant, CENTRAL TRACKING DETECTOR, ZEUS BARREL CALORIMETER, OF-MASS ENERGY, HADRON-COLLISIONS, LEPTOQUARKS, 010308 nuclear & particles physics, Branching fraction, High Energy Physics::Phenomenology, Deep inelastic scattering, High Energy Physics::Experiment, Lepton
Abstract

A search for lepton-flavor-violating interactions $e p \to \mu X $ and $e p\to \tau X $ has been performed with the ZEUS detector using the entire HERA I data sample, corresponding to an integrated luminosity of 130 pb^{-1}. The data were taken at center-of-mass energies, $\sqrt{s}$, of 300 and 318 GeV. No evidence of lepton-flavor violation was found, and constraints were derived on leptoquarks (LQs) that could mediate such interactions. For LQ masses below $\sqrt{s}$, limits were set on $\lambda_{eq_1} \sqrt{\beta_{\ell q}}$, where $\lambda_{eq_1}$ is the coupling of the LQ to an electron and a first-generation quark $q_1$, and $\beta_{\ell q}$ is the branching ratio of the LQ to the final-state lepton $\ell$ ($\mu$ or $\tau$) and a quark $q$. For LQ masses much larger than $\sqrt{s}$, limits were set on the four-fermion interaction term $\lambda_{e q_\alpha} \lambda_{\ell q_\beta} / M_{\mathrm{LQ}}^2$ for LQs that couple to an electron and a quark $q_\alpha$ and to a lepton $\ell$ and a quark $q_\beta$, where $\alpha$ and $\beta$ are quark generation indices. Some of the limits are also applicable to lepton-flavor-violating processes mediated by squarks in $R$-Parity-violating supersymmetric models. In some cases, especially when a higher-generation quark is involved and for the process $e p\to \tau X $, the ZEUS limits are the most stringent to date., Comment: 37 pages, 10 figures, Accepted by EPJC. References and 1 figure (Fig. 6) added

Published
2005

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