58 results on '"Cyrille Thomas"'
Search Results
2. First Protons in the ESS LINAC
- Author
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Luigi Celona, Joao Paulo Martins, Marc Muñoz, Y. Qin, Saeed Haghtalab, Thomas Shea, R. Tarkeshian, Elena Donegani, Emanuele Laface, Clement Derrez, Santo Gammino, Ryoichi Miyamoto, Mats Lindroos, H. Hassanzadegan, Thomas Fay, B. Gålnander, Yngve Levinsen, Lorenzo Neri, Emelie Nilsson, Andreas Jansson, N. Milas, A. Garcia Sosa, Cyrille Thomas, Håkan Danared, M. Eshraqi, and Ciprian Plostinar
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Physics ,Nuclear physics ,Acceleration ,Proton ,Duty cycle ,Physics::Accelerator Physics ,Neutron source ,Spallation ,Nuclear Experiment ,Ion source ,Beam (structure) ,Linear particle accelerator ,Surfaces, Coatings and Films - Abstract
The European Spallation Source (ESS), currently under construction in Lund, Sweden, will be the world’s brightest neutron source, driven by a linear accelerator (LINAC) with an average beam power of 5 MW at 2.0 GeV beam energy. The LINAC accelerates a proton beam of 62.5 mA peak current at 4% duty cycle (2.86 ms at 14 Hz). The accelerator uses a normal conducting front-end bringing the beam energy to 90 MeV, beyond that the acceleration up to 2 GeV is performed using superconducting structures. The first protons were extracted at the ESS site during the commissioning of the ion source and low energy beam transport that started earlier this year and will continue to the next stage of the commissioning up to 21 MeV early next year. This paper gives an overview of the status of the ESS accelerator and the commissioning of the ion source and the low energy beam transport.
- Published
- 2020
3. Effects of Local Anthropogenic Changes on Potential Malaria Vector Anopheles hyrcanus and West Nile Virus Vector Culex modestus, Camargue, France
- Author
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Nicolas Ponçon, Thomas Balenghien, Céline Toty, Jean Baptiste Ferré, Cyrille Thomas, Alain Dervieux, Grégory L’Ambert, Francis Schaffner, Olivier Bardin, and Didier Fontenille
- Subjects
malaria ,West Nile virus ,Anopheles ,Culex ,France ,environment ,Medicine ,Infectious and parasitic diseases ,RC109-216 - Abstract
Using historical data, we highlight the consequences of anthropogenic ecosystem modifications on the abundance of mosquitoes implicated as the current most important potential malaria vector, Anopheles hyrcanus, and the most important West Nile virus (WNV) vector, Culex modestus, in the Camargue region, France. From World War II to 1971, populations of these species increased as rice cultivation expanded in the region in a political context that supported agriculture. They then fell, likely because of decreased cultivation and increased pesticide use to control a rice pest. The species increased again after 2000 with the advent of more targeted pest-management strategies, mainly the results of European regulations decisions. An intertwined influence of political context, environmental constraints, technical improvements, and social factors led to changes in mosquito abundance that had potential consequences on malaria and WNV transmission. These findings suggest that anthropogenic changes should not be underestimated in vectorborne disease recrudescence.
- Published
- 2007
- Full Text
- View/download PDF
4. Effects of the application of a moderate alternate wetting and drying technique on the performance of different European varieties in Northern Italy rice system
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Andrea Volante, Adam H. Price, Gabriele Orasen, Stefano Monaco, Cyrille Thomas, Brigitte Courtois, Nicole Cochrane, Maite Martínez-Eixarch, Giampiero Valè, Viktoria Oliver, Yit Arn Teh, Producció Animal, and Aigües Marines i Continentals
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Oryza sativa ,media_common.quotation_subject ,Soil Science ,chemistry.chemical_element ,food and beverages ,Nitrogen ,Adaptability ,Crop ,chemistry ,Agronomy ,Yield (wine) ,Paddy field ,Environmental science ,Cultivar ,Water-use efficiency ,Agronomy and Crop Science ,media_common - Abstract
Alternate wetting and drying (AWD) technique has been developed and evaluated on rice (Oryza sativa) systems in several countries worldwide for increasing water use efficiency and reducing negative effects of permanent flooding, like the increase in methane emissions and arsenic availability in soil. In this study, a paddy field experiment was carried out for two years to evaluate the application in Northern Italy rice area of a moderate AWD, i.e. only implemented during the vegetative phase of the crop and ponded water maintained thereafter, compared with Continuous Flooding (CF) system. The adaptability of 12 European commercial rice cultivars to AWD was investigated in terms of crop phenology, morphological traits, root production, nitrogen (N) uptake, yield, milled rice yield and microelement concentration in grains. Results showed substantial (40.7 %) water saving probably favoured by the presence of a shallow water table. In these pedoclimatic conditions, very limited effects of a mild AWD on crop status and final productivity were recorded and the commercial cultivars did not display significant different adaptabilities to the water stress. Moreover, AWD decreased arsenic (As) concentration in grain but increased grain Cadmium (Cd) being the degree of such a response dependent upon the variety, suggesting that the genotype plays an important role in this aspect of adaptation to AWD. info:eu-repo/semantics/acceptedVersion
- Published
- 2021
5. Five transversal beam profile monitors for the ESS Cold Linac
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G. Tauzin, R. Tarkeshian, Yannick Mariette, Caroline Lahonde-Hamdoun, F. Benedetti, P. Legou, P. Le Bourlout, L. Scola, Cyrille Thomas, G. Coulloux, Jacques Marroncle, J. P. Mols, Francoise Gougnaud, P. Abbon, Fabio Belloni, Victor Nadot, CEA- Saclay (CEA), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)
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Baryon ,Physics ,Nuclear physics ,[PHYS]Physics [physics] ,Transversal (combinatorics) ,Elementary particle ,Fermion ,Nucleon ,Instrumentation ,Space charge ,Mathematical Physics ,Linear particle accelerator ,Beam (structure) - Published
- 2020
6. Development of a beam imaging system for the European spallation source tuning dump
- Author
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D. Naeem, G. Christoforo, H. Gjersdal, Cyrille Thomas, M. Ibison, Erik Adli, Thomas Shea, and Carsten Welsch
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Physics ,Nuclear and High Energy Physics ,Scintillation ,business.industry ,Radiation ,Optics ,Software ,Neutron source ,Physics::Accelerator Physics ,Spallation ,business ,Actuator ,Instrumentation ,Zemax ,Beam (structure) - Abstract
To provide essential beam diagnostics for the spallation target and for the tuning dump of the European Spallation Source (ESS) with its high-power, low-emittance proton beam, optical imaging systems have been developed allowing remote viewing of the beam profiles, using scintillation light from coatings on the proton beam window (PBW) at the accelerator exit and the target entry window (TW), and insertable interceptive screens at the tuning dump (TD). In this paper, we present the techniques used and the main parameters in the design of the TD system, including the optical configurations modelled in the software Zemax OpticStudio (ZOS). We also present the design principles for reflective optics which can transmit high-quality images, showing the performance of the imaging systems as predicted by ZOS and by prototyping. We take account of the requirements for initial alignment and ongoing maintenance of the optical system. Studies of the radiation and thermal environments, which impact on sensitive optical components such as cameras and mirrors, are also described, as are mechanical considerations for the vacuum vessels and screen actuators. Finally, comments are made on the applicability of similar optics to diagnostic systems at other neutron sources and accelerators.
- Published
- 2020
7. Design and development of Ionization Profile Monitor for the Cryogenic sections of the ESS Linac
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P. Le Bourlout, G. Tauzin, R. Tarkeshian, Cyrille Thomas, Caroline Lahonde-Hamdoun, F. Benedetti, Fabio Belloni, Yannick Mariette, Jacques Marroncle, G. Coulloux, J. P. Mols, Francoise Gougnaud, Victor Nadot, L. Scola, P. Abbon, Institut de Recherches sur les lois Fondamentales de l'Univers (IRFU), and Commissariat à l'énergie atomique et aux énergies alternatives (CEA)-Université Paris-Saclay
- Subjects
Physics::Instrumentation and Detectors ,QC1-999 ,Nuclear engineering ,[PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph] ,Particle beam measurements ,Electron ,Linear proton accelerators ,01 natural sciences ,7. Clean energy ,Linear particle accelerator ,law.invention ,law ,0103 physical sciences ,Neutron ,Spallation ,Strip detector ,Particle beam ,010302 applied physics ,Physics ,010308 nuclear & particles physics ,Detector ,Particle accelerator ,Beam diagnostic ,MCP ,Physics::Accelerator Physics ,Beam (structure) - Abstract
International audience; Saclay CEA/IRFU is working for the delivery of five Non-Invasive Profile Monitors in the frame of the in-kind contribution agreement signed with the European Spallation Source. Neutrons will be produced by spallation reactions of 2 GeV proton beam impinging on a Tungsten target. To accelerate protons a powerful linear accelerator of 5MW is under construction. Diagnostic devices are mandatory tools for the tuning and protection of the machine. The non-invasive profile monitors provide a measurement of the beam profile in transverse directions to the beam propagation. This project raises several physical and technical challenges including low signal detection of ions or electrons, profile distortions induced by the beam Space Charge effect and non-uniformities of electric field. Simulation and model of the critical aspects of the detector have been performed in order to prove the performance and the feasibility of the detector. A series of prototypes has been built with different readout types, and tested in real conditions at the 3MeV proton accelerator IPHI. All of them show some advantages and drawbacks revealed by the tests in real beam conditions. In this paper we present the results of the tests for the various configuration readout systems to agree with the model and simulation of the detector. In concluding remarks, we will discuss the performance of the prototypes and point out the camerabased one to be the more suitable for the final design.Key words: Beam diagnostic / Linear proton accelerators / MCP / Strip detector / Particle beam measurements
- Published
- 2019
8. Highlights from the first beam commissioning stage at ESS for its ion source and low energy beam transport
- Author
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H. Hassanzadegan, R. Tarkeshian, B. Gålnander, Ciprian Plostinar, Mohammad Eshraqi, Emanuele Laface, Cyrille Thomas, Clement Derrez, A. Sosa, N. Milas, Yngve Levinsen, E. Nilsson, Marc Muñoz, Ryoichi Miyamoto, and Elena Donegani
- Subjects
Physics ,Nuclear engineering ,Electrical equipment ,Beam commissioning ,Spallation ,Solenoid ,Stage (hydrology) ,Instrumentation ,Mathematical Physics ,Beam (structure) ,Ion source ,Linear particle accelerator - Abstract
The proton linac of the European Spallation Source, under construction in Lund, Sweden, had beam commissioning of its ion source (IS) and the following low energy beam transport (LEBT) at their final locations from September 2018 to July 2019. This was first of several beam commissioning stages for the linac of ESS, towards the start of the user program in 2023. This paper presents highlights of characterizations of the IS and LEBT from the aforementioned beam commissioning period, including behavioral change of the IS against its parameters, error source identifications of the beam trajectory in the LEBT, and preliminary characterization of the LEBT output beam against solenoid strengths in LEBT.
- Published
- 2020
9. Implementation of the proton beam instrumentation into the proton beam instrumentation plug
- Author
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Sara Ghatnekar, Cyrille Thomas, Thomas Shea, Martin Jaekel, M. Ibison, Fabien Rey, Erik Adli, R. Vivanco, Rikard Linander, Mattias Wilborgsson, Naja de la Cour, and Håvard Gjerdsal
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History ,Materials science ,Proton ,Nuclear engineering ,Window (computing) ,Computer Science Applications ,Education ,law.invention ,Power (physics) ,Beam physics ,law ,Beam instrumentation ,Spallation ,Spark plug ,Beam (structure) - Abstract
The 5 MW proton beam to be delivered to the ESS spallation target must be tuned to its nominal value and controlled at all times. To achieve this, a suite of beam diagnostics has been proposed and is currently been designed. It is located in two plugs, the Proton Beam Window (PBW) plug and the Proton Beam Instrumentation Plug (PBIP). Here we present the design concept for the PBIP imposed by the beam physics requirements as well as by the high power target environment, i.e. material lifetime, remote handling and waste management.
- Published
- 2018
10. X-ray pinhole camera resolution and emittance measurement
- Author
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Cyrille Thomas, Guenther Rehm, Ian Martin, and Riccardo Bartolini
- Subjects
Nuclear and particle physics. Atomic energy. Radioactivity ,QC770-798 - Abstract
Third generation synchrotron light sources are characterized by a low emittance and a low emittance coupling. Some light sources are already operating with extremely low coupling close to 0.1%. Measurement of the transverse beam size is generally used to measure the emittance and the coupling. To this end, several systems are currently used and an x-ray pinhole camera is one of them. In this paper we derive the point spread function of the x-ray pinhole camera both analytically and numerically using the Fresnel diffraction integral and taking into account the broadband spectrum of the bending magnet source, and we show that an optimized design allows the measurement of extremely small vertical beam sizes below 5 μm. The point spread function of several scintillator screens is also measured, and it shows that the contribution of the diffraction and the screen point spread functions have to be taken into account for an accurate measurement of a low coupling. Finally, we show measurements of the vertical beam sizes as small as 6 μm for our nonoptimized setup.
- Published
- 2010
- Full Text
- View/download PDF
11. Rice Production in Europe
- Author
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Cyrille Thomas, Hansjoerg Kraehmer, and Francesco Vidotto
- Subjects
0106 biological sciences ,biology ,04 agricultural and veterinary sciences ,Lissorhoptrus oryzophilus ,Echinochloa ,Chilo suppressalis ,biology.organism_classification ,01 natural sciences ,Agronomy ,Cochliobolus miyabeanus ,040103 agronomy & agriculture ,0401 agriculture, forestry, and fisheries ,Paddy field ,Magnaporthe grisea ,media_common.cataloged_instance ,European union ,010606 plant biology & botany ,Weedy rice ,media_common - Abstract
Rice cultivation in Europe is restricted to a few southern European countries. In 2015, the rice-growing acreage of Italy and Spain together comprised around 75 % of a total area of around half a million hectares. The milled rice equivalents in the EU amounted to 0.4 % of the global rice production. Japonica rice varieties are dominating in Europe. Rice is planted in spring and harvested in autumn. All rice fields in Europe are irrigated. Most rice seed is drilled. In some Spanish areas, pregerminated rice is sown by air. Average yields per hectare range between 4 and 8 tons. In some regions 10 tons can easily be achieved. Monocot weeds are prevailing with wild rice, Echinochloa, Cyperus and Heteranthera species being the most frequent representatives. Hydrellia griseola, Chilo suppressalis, Eysarcoris inconspicuus and Lissorhoptrus oryzophilus have to be regarded as the most serious insect problems. Magnaporthe grisea, Cochliobolus miyabeanus and Gibberella fujikuroi are the most widespread disease-causing organisms. A wide range of chemical and biological products is registered for rice protection. For some countries, however, costs for the registration of new products are too high compared with the low acreage so that lacking product innovation becomes a major problem. The acreage of Clearfield rice is continuously growing primarily due to wild rice as an increasing problem. Water shortage is a problem in a few areas in Spain primarily. Irrigated rice provides a habitat for a great number of organisms such as migratory birds and deserves special attention as far as biodiversity is concerned. Greenhouse gas emission and heavy metal concentration in rice fields have been a problem in some areas in the past. New cultivation methods with a reduced water consumption and new rice varieties should, however, contribute to the reduction of these problems.
- Published
- 2017
12. Corrigendum: The European Spallation Source Design (2018 Phys. Scr. 93 014001)
- Author
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A. Sadeghzadeh, H. Carlsson, M. Olsson, John Weisend, Carlos A. Martins, J. Harborn, N. Gazis, Emanuele Laface, A. Ponton, Riccard Andersson, Irena Dolenc Kittelmann, Wolfgang Hees, M. Aberg, Daniel Piso, G. Muhrer, M. Mansouri-Sharifabad, A. Monera-Martinez, D. Phan, Mats Lindroos, D. Lyngh, Per-Åke Nilsson, A. Polato, K. Batkov, Mogens H. Jensen, J. E. Presteng, Håkan Danared, P. Arnold, Tobias Friedrich, M. Juni-Ferreira, Thomas Shea, Y. Lee, Lali Tchelidze, J. Ringnér, E. Bargallo, Stuart Birch, I. Alonso, Denis Paulic, L. Coney, Christine Darve, K. Sjögreen, A. Lundmark, Yngve Levinsen, S. Regnell, A. Vergara, Timo Korhonen, H. Hassanzadegan, F. Jensen, M. Kickulies, R. Linander, M. Anthony, Cyrille Thomas, H. Carling, S. Molloy, U. Oden, Y. Bessler, Manuel Zaera-Sanz, E. Sargsyan, R. Miyamoto, J. Haines, F. Sordo, Roland Garoby, J. Cereijo, M. G'ohran, A. Sunesson, K. Breimer, Oystein Midttun, Annika Nordt, Andreas Jansson, L. Zanini, B. Cheymol, John Jurns, Mohammad Eshraqi, and E. Pitcher
- Subjects
Materials science ,010308 nuclear & particles physics ,Nuclear engineering ,0103 physical sciences ,Spallation ,010306 general physics ,Condensed Matter Physics ,01 natural sciences ,Mathematical Physics ,Atomic and Molecular Physics, and Optics - Published
- 2018
13. Effects of Local Anthropogenic Changes on Potential Malaria VectorAnopheles hyrcanusand West Nile Virus VectorCulex modestus,Camargue, France
- Author
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Cyrille Thomas, Francis Schaffner, Olivier Bardin, Céline Toty, Jean Baptiste Ferré, Nicolas Ponçon, Grégory L'Ambert, Didier Fontenille, Alain Dervieux, and Thomas Balenghien
- Subjects
Insecticides ,Time Factors ,ECOSYSTEME ,Epidemiology ,lcsh:Medicine ,L73 - Maladies des animaux ,Abundance (ecology) ,Dynamique des populations ,Human Activities ,biology ,Ecology ,Anopheles ,Agriculture ,Facteur du milieu ,PRATIQUE CULTURALE ,Épidémiologie ,Culex ,Flavivirus ,Vecteur de maladie ,Infectious Diseases ,INSECTICIDE ,Perspective ,MOUSTIQUE ,VIRUS ,France ,West Nile virus ,environment ,L72 - Organismes nuisibles des animaux ,Microbiology (medical) ,malaria ,Context (language use) ,lcsh:Infectious and parasitic diseases ,medicine ,Animals ,Humans ,lcsh:RC109-216 ,Ecosystem ,lcsh:R ,VECTEUR ,Culex modestus ,ETUDE REGIONALE ,Oryza ,PALUDISME ,biology.organism_classification ,medicine.disease ,RIZICULTURE ,Insect Vectors ,Socioeconomic Factors ,ANTHROPISATION ,Vector (epidemiology) ,West Nile Fever ,Malaria - Abstract
Sixty years of environmental modifications have led to strong and rapid effects on the abundance of vector populations., Using historical data, we highlight the consequences of anthropogenic ecosystem modifications on the abundance of mosquitoes implicated as the current most important potential malaria vector, Anopheles hyrcanus, and the most important West Nile virus (WNV) vector, Culex modestus, in the Camargue region, France. From World War II to 1971, populations of these species increased as rice cultivation expanded in the region in a political context that supported agriculture. They then fell, likely because of decreased cultivation and increased pesticide use to control a rice pest. The species increased again after 2000 with the advent of more targeted pest-management strategies, mainly the results of European regulations decisions. An intertwined influence of political context, environmental constraints, technical improvements, and social factors led to changes in mosquito abundance that had potential consequences on malaria and WNV transmission. These findings suggest that anthropogenic changes should not be underestimated in vectorborne disease recrudescence.
- Published
- 2007
14. Storage ring free electron laser dynamics in presence of an auxiliary harmonic radio frequency cavity
- Author
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Christelle Bruni, G.L. Orlandi, de G Ninno, M.E. Couprie, Cyrille Thomas, Jim Jan Botman, D. Garzella, and Coherence and Quantum Technology
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Physics ,business.industry ,Gain ,Free-electron laser ,Physics::Optics ,Laser ,Atomic and Molecular Physics, and Optics ,law.invention ,Optics ,law ,Harmonic ,Physics::Accelerator Physics ,Radio frequency ,Laser beam quality ,business ,Beam (structure) ,Storage ring - Abstract
In a Storage Ring Free Electron Laser (SRFEL) there is a strong interdependence between the laser beam and the electron beam from which the laser is generated. The Super ACO storage ring has a second Radio Frequency (RF) cavity at the 5th harmonic of the main RF cavity. It is used to shorten the bunch length, thereby enhancing the laser gain. Employing this RF harmonic cavity instabilities are observed with a strong effect on both the laser radiation properties and the electron beam behaviour. In this paper, we first present beam characteristics of Super-ACO as influenced by the harmonic cavity, and the instabilities of the beam due to this RF cavity. Then we discuss the FEL properties in presence of the harmonic RF cavity. In general the harmonic cavity functions as intended, and it is observed that the laser suppresses the instabilities caused by the harmonic cavity in the absence of the FEL.PACS: 41.60.Cr Free-electron lasers - 05.45.-a Nonlinear dynamics and nonlinear dynamical systems - 29.20.Dh Storage rings - 41.75.Fr Electron and positron beams
- Published
- 2005
15. Longitudinal detuning for an SRFEL
- Author
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Giuseppe Dattoli, Cyrille Thomas, C. Bruni, D. Garzella, de G Ninno, Jim Jan Botman, M.E. Couprie, and Coherence and Quantum Technology
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Physics ,Pulse repetition frequency ,Nuclear and High Energy Physics ,business.industry ,Free-electron laser ,Pulse duration ,Electron ,Laser ,law.invention ,Pulse (physics) ,Optics ,law ,Physics::Accelerator Physics ,Laser power scaling ,Physics::Atomic Physics ,business ,Instrumentation ,Storage ring - Abstract
The interaction between laser pulse and electron beam of a storage ring free electron laser (SRFEL) can be described in the longitudinal phase space as a function of the longitudinal detuning, which we define as the delay per pass between the laser pulse and the electron bunch. SRFEL dynamics versus detuning is studied by comparison of measurements performed at Super ACO with a numerical code. Experimental phenomena regarding detuning have been properly predicted by simulations. Quantitative agreement for pulse duration, pulse repetition frequency, laser power, etc. has been found.
- Published
- 2003
16. An analytical solution for the Haissinski equation with purely inductive wake fields
- Author
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Luca Mezi, Cyrille Thomas, Giuseppe Dattoli, Jim Jan Botman, R. Bartolini, and Mauro Migliorati
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Normalization (statistics) ,Physics ,Wake field ,Classical mechanics ,Ordinary differential equation ,General Physics and Astronomy ,Fokker–Planck equation ,Wake - Abstract
The static solution of the Fokker-Planck equation, known as the Haissinski equation and governing the longitudinal evolution of an electron beam moving in a Storage-Ring which is subject to an inductive wake field, can be expressed in an analytical form, using the Lambert W-function. We show how the use of this analytical tool allows a better understanding of the validity of the numerical solutions and the distribution normalization properties.
- Published
- 2002
17. SRFEL dynamics investigated with a 1-D numerical code
- Author
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Giuseppe Dattoli, Luca Mezi, de G Ninno, Jim Jan Botman, Cyrille Thomas, M.E. Couprie, and Coherence and Quantum Technology
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Physics ,Nuclear and High Energy Physics ,Differential equation ,Free-electron laser ,Electron ,Instability ,Computational physics ,Quantum mechanics ,Electric field ,Physics::Accelerator Physics ,Instrumentation ,Storage ring ,Energy (signal processing) ,Microwave - Abstract
Designing a Storage Ring Free Electron Laser or improving the performance of an existing one first requires investigation of its longitudinal dynamics. With this aim, a 1-dimensional model, including energy spread and Microwave Instability (MI) effects, has been implemented in a numerical code. The code solves the differential equations of the longitudinal complex amplitude of the intra-cavity electric field, coupled with the differential equations describing the evolution of the electron bunch energy spread and of the MI. The agreement with experimental results of the Super-ACO FEL is also discussed.
- Published
- 2002
18. Towards the Fourier limit on the super-ACO Storage Ring FEL
- Author
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G. De Ninno, E. Renault, M. Hirsch, D. Nutarelli, D. Garzella, M.E. Couprie, R. Roux, G. Moneron, and Cyrille Thomas
- Subjects
Physics ,Nuclear and High Energy Physics ,Streak camera ,business.industry ,Free-electron laser ,Laser ,law.invention ,symbols.namesake ,Fourier transform ,Optics ,law ,Limit (music) ,symbols ,business ,Instrumentation ,Storage ring ,Monochromator ,Line (formation) - Abstract
Systematic studies on the Free Electron Laser (FEL) line and micropulse have been performed on the Super-ACO storage ring FEL with a monochromator and a double-sweep streak camera under various conditions of operation (detuning, “CW” and Q-switched mode). From these data, it appears that the FEL is usually operated very close to the Fourier limit.
- Published
- 2001
19. Single shot transverse emittance measurement from OTR screens in a drift transport section
- Author
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Riccardo Bartolini, Nicolas Delerue, Cyrille Thomas, Laboratoire de l'Accélérateur Linéaire (LAL), and Université Paris-Sud - Paris 11 (UP11)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Centre National de la Recherche Scientifique (CNRS)
- Subjects
electrostatic accelerators) ,[PHYS.PHYS.PHYS-ACC-PH]Physics [physics]/Physics [physics]/Accelerator Physics [physics.acc-ph] ,Beam-line instrumentation (beam position and profile monitors ,01 natural sciences ,Linear particle accelerator ,law.invention ,Wake-field acceleration (laser-driven ,Optics ,law ,0103 physical sciences ,beam-intensity monitors ,Thermal emittance ,010306 general physics ,Instrumentation ,Mathematical Physics ,Physics ,Beam diameter ,electron-driven) ,010308 nuclear & particles physics ,business.industry ,Laser ,low energy (linear accelerators ,Transverse plane ,Instrumentation for particle accelerators and storage rings ,bunch length monitors) ,Physics::Accelerator Physics ,Laser beam quality ,business ,cyclotrons ,Storage ring ,Beam (structure) - Abstract
Single shot transverse emittance measurement is essential to assess the beam quality and performance of new generation light sources such as linac based X-ray Free Electron Lasers (FELs) or laser plasma wakefield accelerators (LPWA). To this end, we have developed a single shot transverse emittance measurement using at least 3 screens inserted in the beam at the same time, measuring the beam size at different positions in a drift space in one single shot. In this paper, we firstly present the theoretical aspects to perform the measurement. We secondly show experimental results obtained at Diamond for a 3 GeV electron beam in the transfer line from the Booster to the Storage Ring, using this thin OTR screens method. Finally, we discuss the results showing the strength of the measurement in comparison with more standard and established emittance measurement, like the quadrupole scan method. © 2011 IOP Publishing Ltd and SISSA.
- Published
- 2011
20. Experience with low-alpha lattices at the Diamond Light Source
- Author
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Cyrille Thomas, Ian Martin, Riccardo Bartolini, and Guenther Rehm
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Physics ,Nuclear and High Energy Physics ,Physics and Astronomy (miscellaneous) ,business.industry ,Synchrotron radiation ,Diamond ,Surfaces and Interfaces ,Momentum compaction ,engineering.material ,Alpha (programming language) ,Light source ,Optics ,Thz radiation ,engineering ,lcsh:QC770-798 ,Point (geometry) ,lcsh:Nuclear and particle physics. Atomic energy. Radioactivity ,business ,Beam (structure) - Abstract
In this paper we present the experience at Diamond Light Source in the design, implementation, and operation of low momentum compaction factor lattices for the generation of short x-ray pulses and coherent THz radiation. The effects of higher-order terms in the expansion of the momentum compaction factor on beam dynamics are reviewed from a theoretical point of view, and the details of both high- and low-emittance solutions at Diamond are discussed. Measurements taken to characterize the lattices under a variety of machine conditions are presented, along with the practical limitations that exist as the momentum compaction factor is made to approach zero. © 2011 American Physical Society.
- Published
- 2011
21. X-ray pinhole camera resolution and emittance measurement
- Author
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Riccardo Bartolini, Ian Martin, Cyrille Thomas, and Guenther Rehm
- Subjects
Diffraction ,Point spread function ,Physics ,Nuclear and High Energy Physics ,Physics and Astronomy (miscellaneous) ,business.industry ,Surfaces and Interfaces ,Scintillator ,Synchrotron ,law.invention ,Optics ,law ,Pinhole camera ,Physics::Accelerator Physics ,lcsh:QC770-798 ,Thermal emittance ,lcsh:Nuclear and particle physics. Atomic energy. Radioactivity ,business ,Beam (structure) ,Fresnel diffraction - Abstract
Third generation synchrotron light sources are characterized by a low emittance and a low emittance coupling. Some light sources are already operating with extremely low coupling close to 0.1%. Measurement of the transverse beam size is generally used to measure the emittance and the coupling. To this end, several systems are currently used and an x-ray pinhole camera is one of them. In this paper we derive the point spread function of the x-ray pinhole camera both analytically and numerically using the Fresnel diffraction integral and taking into account the broadband spectrum of the bending magnet source, and we show that an optimized design allows the measurement of extremely small vertical beam sizes below $5\text{ }\text{ }\ensuremath{\mu}\mathrm{m}$. The point spread function of several scintillator screens is also measured, and it shows that the contribution of the diffraction and the screen point spread functions have to be taken into account for an accurate measurement of a low coupling. Finally, we show measurements of the vertical beam sizes as small as $6\text{ }\text{ }\ensuremath{\mu}\mathrm{m}$ for our nonoptimized setup.
- Published
- 2010
22. Free electron laser and microwave instability interplay in a storage ring
- Author
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Cyrille Thomas, M. E. Couprie, C. Bruni, C. Rippon, G.L Orlandi, Giuseppe Dattoli, Riccardo Bartolini, and D. Garzella
- Subjects
Physics ,Nuclear and High Energy Physics ,Physics and Astronomy (miscellaneous) ,Free-electron laser ,Surfaces and Interfaces ,Laser ,Instability ,law.invention ,law ,Cathode ray ,Physics::Accelerator Physics ,lcsh:QC770-798 ,lcsh:Nuclear and particle physics. Atomic energy. Radioactivity ,Laser power scaling ,Atomic physics ,Storage ring ,Microwave ,Beam (structure) - Abstract
060701-1 Collective effects, such as the microwave instability, influence the longitudinal dynamics of an electron beam in a storage ring. In a storage ring free electron laser (FEL) they can compete with the induced beam heating and thus be treated as a further concomitant perturbing source of the beam dynamics. Bunch length and energy spread measurements, carried out at the Super-ACO storage ring, can be correctly interpreted according to a broad-band impedance model. Quantitative estimations of the relative role that is played by the microwave instability and the laser heating in shaping the beam longitudinal dynamics have been obtained by the analysis of the equilibrium laser power. It has been performed in terms of either a theoretical limit, implemented with the measured beam longitudinal characteristics, or the numerical results obtained by a macroparticle tracking code, which includes the laser pulse propagation. Such an analysis, carried out for different operating points of the Super-ACO storage ring FEL, indicates that the laser heating counteracts the microwave instability.
- Published
- 2004
23. Spin transition with a very large thermal hysteresis in a molecular crystal: an EPR study of Fe(PM-PEA)(2)(NCS)(2)
- Author
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Hervé Daubric, Olivier Kahn, Cyrille Thomas, C. Cantin, Jean-François Létard, Janis Kliava, Centre de physique moléculaire optique et hertzienne (CPMOH), Université Sciences et Technologies - Bordeaux 1-Centre National de la Recherche Scientifique (CNRS), Laboratoire de l'Accélérateur Linéaire (LAL), Centre National de la Recherche Scientifique (CNRS)-Institut National de Physique Nucléaire et de Physique des Particules du CNRS (IN2P3)-Université Paris-Sud - Paris 11 (UP11), Institut de Chimie de la Matière Condensée de Bordeaux (ICMCB), and Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)-Institut Polytechnique de Bordeaux-Université de Bordeaux (UB)
- Subjects
[PHYS]Physics [physics] ,Chemistry ,Doping ,Spin transition ,General Physics and Astronomy ,02 engineering and technology ,010402 general chemistry ,021001 nanoscience & nanotechnology ,01 natural sciences ,Magnetic susceptibility ,Spectral line ,0104 chemical sciences ,Ion ,law.invention ,Crystal ,Crystallography ,law ,Phase (matter) ,Condensed Matter::Strongly Correlated Electrons ,Physical and Theoretical Chemistry ,[PHYS.COND]Physics [physics]/Condensed Matter [cond-mat] ,0210 nano-technology ,Electron paramagnetic resonance ,ComputingMilieux_MISCELLANEOUS - Abstract
Magnetic susceptibility and X- and Q-band EPR studies are reported for the Fe 2+ spin transition compound (Fe( PM-PEA ) 2 (NCS) 2 ) in powder form. An exceptionally large thermal hysteresis loop, about 60 K, has been found by both techniques. The EPR studies have been carried out on compound doped with Mn 2+ (0.1‰ of Mn/Fe). An original EPR spectra simulation program has been elaborated in order to yield data on the structural modifications accompanying the spin transition. The fine structure parameters obtained by simulations in the high-spin state of Fe 2+ , D =460, E =25, and in the low-spin state of this ion, D =235, E =20 (in 10 −4 cm −1 ) confirm that the spin transition is accompanied by a crystalline phase transformation. The Mn 2+ EPR spectra in the spin transition region can be convincingly fitted by linear combinations of the spectra observed in the high-spin and low-spin states of Fe 2+ , indicating that the spin transition occurs in domains of like-spin ions.
- Published
- 1999
24. Coherence of a near diffraction limited undulator synchrotron radiation source
- Author
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Cyrille Thomas, Moritz Hoesch, and Pavel Dudin
- Subjects
Diffraction ,Physics ,X-ray optics ,010308 nuclear & particles physics ,business.industry ,Synchrotron Radiation Source ,Synchrotron radiation ,02 engineering and technology ,Undulator ,01 natural sciences ,Atomic and Molecular Physics, and Optics ,Coherence and statistical optics ,Electronic, Optical and Magnetic Materials ,Optics ,Beamline ,High-energy X-rays ,0103 physical sciences ,0202 electrical engineering, electronic engineering, information engineering ,Physics::Accelerator Physics ,020201 artificial intelligence & image processing ,Electrical and Electronic Engineering ,Physical and Theoretical Chemistry ,business ,Coherence (physics) - Abstract
We present experimental measurements of the coherence of an undulator synchrotron radiation source near to the diffraction limit condition. These measurements have been done following two objectives. The first one is to verify a fundamental point of the theory of synchrotron radiation. To our knowledge, since it has been re-written by Geloni et al. [1] , no experimental verification to validate the theory has been performed. Our measurement proves the theory to be valid for the case of a near diffraction limited undulator source. The other objective is to measure the coherence of the synchrotron radiation on the I05 beamline of Diamond, in front of the last focusing element of the beamline. This knowledge can be used to predict the focusing performance of the beamline by means of Fourier Optics.
- Full Text
- View/download PDF
25. Implementation of the proton beam instrumentation into the proton beam instrumentation plug.
- Author
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Naja de la Cour, Mattias Wilborgsson, Thomas Shea, Cyrille Thomas, Fabien Rey, Sara Ghatnekar, Rikard Linander, Erik Adli, Håvard Gjerdsal, Martin Jaekel, Mark Ibison, and Raul Vivanco
- Published
- 2018
- Full Text
- View/download PDF
26. Genetic basis of growth, spring phenology, and susceptibility to biotic stressors in maritime pine.
- Author
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Hurel, Agathe, de Miguel, Marina, Dutech, Cyril, Desprez‐Loustau, Marie‐Laure, Plomion, Christophe, Rodríguez‐Quilón, Isabel, Cyrille, Agathe, Guzman, Thomas, Alía, Ricardo, González‐Martínez, Santiago C., and Budde, Katharina B.
- Subjects
CLUSTER pine ,PHENOLOGY ,PINE ,GENETIC variation ,FOREST reserves ,PLANT phenology ,DROUGHTS - Abstract
Forest ecosystems are increasingly challenged by extreme events, for example, drought, storms, pest attacks, and fungal pathogen outbreaks, causing severe ecological and economic losses. Understanding the genetic basis of adaptive traits in tree species is of key importance to preserve forest ecosystems, as genetic variation in a trait (i.e., heritability) determines its potential for human‐mediated or evolutionary change. Maritime pine (Pinus pinaster Aiton), a conifer widely distributed in southwestern Europe and northwestern Africa, grows under contrasted environmental conditions promoting local adaptation. Genetic variation at adaptive phenotypes, including height, spring phenology, and susceptibility to two fungal pathogens (Diplodia sapinea and Armillaria ostoyae) and an insect pest (Thaumetopoea pityocampa), was assessed in a range‐wide clonal common garden of maritime pine. Broad‐sense heritability was significant for height (0.219), spring phenology (0.165–0.310), and pathogen susceptibility (necrosis length caused by D. sapinea, 0.152; and by A. ostoyae, 0.021, measured on inoculated, excised branches under controlled conditions), but not for pine processionary moth incidence in the common garden. The correlations of trait variation among populations revealed contrasting trends for pathogen susceptibility to D. sapinea and A. ostoyae with respect to height. Taller trees showed longer necrosis length caused by D. sapinea while shorter trees were more affected by A. ostoyae. Moreover, maritime pine populations from areas with high summer temperatures and frequent droughts were less susceptible to D. sapinea but more susceptible to A. ostoyae. Finally, an association study using 4227 genome‐wide SNPs revealed several loci significantly associated with each trait (range of 3–26), including a possibly disease‐induced translation initiation factor, eIF‐5, associated with needle discoloration caused by D. sapinea. This study provides important insights to develop genetic conservation and breeding strategies integrating species responses to biotic stressors. [ABSTRACT FROM AUTHOR]
- Published
- 2021
- Full Text
- View/download PDF
27. Silicon accumulation in rice plant aboveground biomass affects leaf carbon quality.
- Author
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Schaller, Jörg, Heimes, Robin, Ma, Jian Feng, Meunier, Jean-Dominique, Shao, Ji Feng, Fujii-Kashino, Miho, and Knorr, Klaus Holger
- Subjects
PLANT biomass ,LIGNINS ,CARBON compounds ,SILICON ,RICE ,FOURIER transform infrared spectroscopy ,BROWN rice - Abstract
Background and aim: Silicon is known to be able to substitute carbon in plant biomass, especially in cellulose, lignin and phenols. However, a more comprehensive picture regarding the effect of silicon accumulation on plant carbon quality (cellulose, lignin, phenol, wax, lipids, and free organic acids content) with regard to potential decomposability is still missing. Methods: Two different rice varieties (French brown and red rice cultivars) were cultivated under five different soil silicon availabilities. After maturity we harvested the plants and analyzed them regarding carbon quality by FTIR spectroscopy and regarding plant silicon concentrations. Results: Silicon accumulation was found to be dependent on silicon availability and on the specific rice cultivar. The lowering of carbon compounds content by silicon was found not to be restricted to cellulose, lignin and phenol. Silicon accumulation was able to decrease other carbon compounds such as fat, wax, lipids, and free organic acids, too. Conclusions: Consequently, silicon is important for the carbon quality of silicon accumulating plants. Furthermore, silicon accumulation in plants is interfering with a large range of different carbon compounds potentially altering the leaf economic spectra, decomposability, and thus potentially interfering with the whole performance of ecosystems dominated by silicon accumulating plant species. [ABSTRACT FROM AUTHOR]
- Published
- 2019
- Full Text
- View/download PDF
28. Cyanate is a low abundance but actively cycled nitrogen compound in soil
- Author
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Mooshammer, Maria, Wanek, Wolfgang, Jones, Stephen H., Richter, Andreas, and Wagner, Michael
- Published
- 2021
- Full Text
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29. AGENDA.
- Published
- 2017
30. Effects of local anthropogenic changes on potential malaria vector Anopheles hyrcanus and West Nile virus vector Culex modestus, Camargue, France.
- Author
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Ponçon, Nicolas, Balenghien, Thomas, Toty, Céline, Ferré, Jean Baptiste, Thomas, Cyrille, Dervieux, Alain, L'Ambert, Grégory, Schaffner, Francis, Bardin, Olivier, Fontenille, Didier, Ponçon, Nicolas, Toty, Céline, Baptiste Ferré, Jean, and L'ambert, Grégory
- Subjects
MALARIA ,MOSQUITOES ,ANOPHELES hyrcanus ,WEST Nile virus ,CULEX - Abstract
Using historical data, we highlight the consequences of anthropogenic ecosystem modifications on the abundance of mosquitoes implicated as the current most important potential malaria vector, Anopheles hyrcanus, and the most important West Nile virus (WNV) vector, Culex modestus, in the Camargue region, France. From World War II to 1971, populations of these species increased as rice cultivation expanded in the region in a political context that supported agriculture. They then fell, likely because of decreased cultivation and increased pesticide use to control a rice pest. The species increased again after 2000 with the advent of more targeted pest-management strategies, mainly the results of European regulations decisions. An intertwined influence of political context, environmental constraints, technical improvements, and social factors led to changes in mosquito abundance that had potential consequences on malaria and WNV transmission. These findings suggest that anthropogenic changes should not be underestimated in vectorborne disease recrudescence. [ABSTRACT FROM AUTHOR]
- Published
- 2007
- Full Text
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31. Population dynamics of pest mosquitoes and potential malaria and West Nile virus vectors in relation to climatic factors and human activities in the Camargue, France.
- Author
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PONÇON, N., TOTY, C., L’AMBERT, G., LE GOFF, G., BRENGUES, C., SCHAFFNER, F., and FONTENILLE, D.
- Subjects
WETLAND management ,MOSQUITOES ,DIPTERA ,ANOPHELES ,PROTOZOAN diseases ,INSECT traps ,WATER quality management ,MOSQUITO control - Abstract
The Camargue is an extensive wetland in the southeast of France, which is highly influenced by human activities. Large ponds, marshes and irrigated fields provide abundant potential breeding sites for mosquitoes. mosquitoes, which are important in terms of the nuisance they cause to people and animals, the limitations they impose on tourism and their potential threat to human health. Several of the mosquito species present are potential vectors of malaria and West Nile virus. Therefore, the population dynamics of these species were monitored over an entire breeding season during March–October 2005. Mosquito populations were sampled in two study areas once every 2 weeks, using CDC light traps baited with CO
2 . Sixteen species were collected. The majority (98.7%) of the catch were Aedes caspius (Pallas) (Diptera: Culicidae), Culex modestus (Ficalbi), Culex pipiens L. and Anopheles hyrcanus (Pallas). The population dynamics of these species varied considerably in relation to the species’ biology, climatic conditions (rainfall, temperature and season), water management, implementation of mosquito control campaigns and landscape use. [ABSTRACT FROM AUTHOR]- Published
- 2007
- Full Text
- View/download PDF
32. Single shot transverse emittance measurement from OTR screens in a drift transport section.
- Author
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Thomas, C., Delerue, N., and Bartolini, R.
- Published
- 2011
- Full Text
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33. Le kali-yuga ou l’ambivalence de l’âge sombre
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Dominique Wohlschlag and Dominique Wohlschlag
- Abstract
La littérature antique nous a familiarisés, dès Hésiode, avec l'idée d'un âge d'or suivi de périodes de plus en plus sombres, d'argent, de bronze et de fer. Ce même mythe apparaît, avec quelques variations, dans la grande épopée indienne du Mahâbhârata quelques siècles plus tard. Mais à la différence de la Grèce, l'Inde propose, dès le début, une estimation chiffrée de la durée de ces âges, inscrits dans un processus cyclique d'une grande complexité.Dès lors, le mythe des quatre âges devient la pierre angulaire de la religion commune. Naît alors une nouvelle conception du temps, débouchant sur une eschatologie : nous allons droit vers une catastrophe qu'annoncent la crise écologique, un inéluctable désintérêt du spirituel, l'érosion des religions, la désagrégation des familles et le relâchement des mœurs.Cependant, le kali-yuga, « l'âge des conflits », offre, des compensations inattendues. C'est si vrai que certains sages des âges antérieurs ont, selon les textes, regretté d'être « nés trop tôt ». C'est un aspect méconnu de la doctrine des quatre âges, qui prend un relief singulier à notre époque et que tente d'explorer le présent ouvrage, à partir d'une lecture attentive des inépuisables sources de la tradition hindoue.
- Published
- 2024
34. Black Coffee Lightning David Lynch Returns to Twin Peaks
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Greg Olson and Greg Olson
- Abstract
Greg Olson, author of David Lynch: Beautiful Dark, the essential book on Lynch's life and art, has resided in the Twin Peaks region of the Northwest for decades, and David Lynch spent youthful years in the Northwest; both of their fathers were woodsmen. Lynch believes that the world hums with spirituality, and over a thirty-year span Lynch and Mark Frost created forty-eight hours of Twin Peaks TV and film, hypnotic cinematic music immersed in the depths and divine heights of human nature, an artistic song of the forest, America, the world, the cosmos. David Lynch is an international icon of visionary artistic innovation, humanistic thought and philanthropy, and spiritual exploration, and Twin Peaks: The Return is his magnum opus, a mytho-poetic summation of his deepest beliefs and concerns. Author Olson, in his characteristically intimate and personal way, traces the Twin Peaks currents of Lynch's emotional-visceral storytelling, themes, imagery and sound: the way the artist and viewer share an electrified circuit of mystery and understanding. Olson details Lynch's kinship with transcendence-seeking artists like William Blake, Walt Whitman, Jean Cocteau, Philip K. Dick and the post-World War II mystical Northwest painters. Small town values, coffee culture, the color pink, the Bible, Vedic literature, Marvel Comics Superheroes, and a Parisian camera crew wanting Olson to guide them throughTwin Peaks territory all make appearances. Olson's chronicle includes personal interaction with Lynch, his colleagues, and the artist's inner world of karmic balancing, reincarnation, spiritual evolution, and veneration of women. Twin Peaks centers on the abiding presence of a lost woman, Laura Palmer, the downward, then upward arc of her life, afterlife, and goddess potential. Olson. Lynch and Twin Peaks have been on parallel tracks for decades. Olson's longtime love, Linda Bowers, died shortly before Twin Peaks: The Return aired, and his lived experience with Lynch's art speaks to the healing power of artistic engagement.
- Published
- 2024
35. La voce della felicità : Dentro la musica di Jakob Bro
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Andrea Fabris and Andrea Fabris
- Abstract
Classe 1978, danese, Jakob Bro è uno dei chitarristi più eclettici che il panorama jazzistico abbia partorito negli ultimi vent'anni. A partire dal 2002, giovanissimo, si forma militando nei gruppi di Paul Motian e Tomasz Stanko, per poi diventare a sua volta un protagonista della musica improvvisata mondiale. Incidendo ben 16 dischi da leader, nell'arco della sua carriera ha collaborato con musicisti quali Lee Konitz, Bill Frisell, Andrew Cyrille, Kenny Wheeler, Jon Christensen, Palle Mikkelborg, Joey Baron, Thomas Morgan, Larry Grenadier, Jorge Rossy, Craig Taborn, Mark Turner, Arve Henriksen. Cosa porta musicisti di estrazioni ed età così eterogenee a collaborare fra di loro? Ma soprattutto, quali caratteristiche spingono la musica di Jakob Bro a essere un richiamo così forte e affascinante, capace di attrarre figure di tale calibro come api sul miele? Analizzando la produzione discografica di Bro tramite le sue principali influenze artistiche, i vari capitoli del libro ripercorrono un percorso immaginario: partendo dal vorticoso interplay proveniente dai locali del West Village newyorkese, si passa per le incursioni rumoristiche della free thing anni Sessanta, per arrivare fino alle armonie soffuse nelle gelide terre scandinave. L'autore, attraverso un'introspezione nel suo percorso umano e di musicista, tiene fede all'emotività che contraddistingue le composizioni di Bro, regalando una visione intima e personale su uno dei “nuovi” maestri del jazz contemporaneo.
- Published
- 2023
36. Rayonnante humilite : L'amplitude de la lumiere selon Bonaventure de Bagnoregio
- Author
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C. Solignac and C. Solignac
- Abstract
Pensee de lumignons, tel est le sobriquet forge par Pierre Magnard pour designer la si brillante pensee des Lumieres. Un lumignon peut etre concu comme une lumiere reduite non consciente de sa source. La reduction de la Lumiere veritable a la lumiere naturelle et finie de l'intelligence humaine serait-elle l'ecueil d'apres Pierre Magnard de certains penseurs des dites Lumieres? Si cette reduction a bien eu lieu notamment au sein du mouvement des Lumieres mais aussi ailleurs et a d'autres epoques, elle est l'inverse de la reductio medievale qui est reconduction et concentration plus que reduction simplificatrice. Pour mieux le comprendre, le livre que vous tenez entre vos mains propose un parcours, grace au fil rouge de la lumiere, dans l'oeuvre d'un grand auteur medieval, Giovanni da Fidanza (env. 1217-1274), italien d'origine, devenu par vocation frere mineur sous le nom de Bonaventure, etudiant a Paris, oeuvrant ensuite comme ministre general de l'Ordre franciscain. Le Docteur seraphique (ainsi l'a baptise l'Eglise catholique) exprime dans tout son OEuvre que le vocable lumiere ne peut etre utilise uniquement pour parler de la raison humaine, lumiere naturelle, mais qu'il permet bien aussi, et peut-etre surtout, de designer l'etre divin, Lumiere veritable et unique, present sous diverses modalites en chaque chose dont l'intelligence humaine. Il percoit, scrute, pense et nous aide a penser, certes, le role epistemique, cosmologique, esthetique, physique et metaphysique de la lumiere mais avec l'evangile, il montre aussi l'importance de la lumiere dans la constitution de la theologie et, par la christologie, dans l'anthropologie. Bonaventure, frere de saint Francois d'Assise, nomme alter Christus, renvoie ainsi, et pour cause, assez souvent son lecteur ou son auditoire au Christ, si bien nomme dans le quatrieme evangile Lumiere du monde. Que les heritiers de conceptions relayees entre autres par certains modernes qui se sont auto-proclames Lumieres parfois jusqu'a la negation de la lumiere divine (humanisme athee), heritiers que nous sommes tous, puissent redecouvrir l'origine de toute lumiere dont leur propre lumiere naturelle afin de rayonner d'humilite et de cesser d'etre des lumignons : tel pourrait etre un des nombreux apports de cet ouvrage.
- Published
- 2022
37. First Beam on Target diagnostics equipment for real-time beam data installed at ESS
- Subjects
Business, international - Abstract
Lund, Sweden: European Spallation Source has issued the following news release: The ESS Beam Diagnostics team, in collaboration with Oslo University, has recently installed mirrors in the Proton Beam Instrumentation [...]
- Published
- 2024
38. New Technologies for Electrochemical Applications
- Author
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Mu. Naushad, Saravanan Rajendran, Abdullah Al-Enizi, Mu. Naushad, Saravanan Rajendran, and Abdullah Al-Enizi
- Subjects
- Electrochemistry, Industrial
- Abstract
The field of electrochemistry is exploring beyond its basic principles to innovation. New Technologies for Electrochemical Applications presents advancements in electrochemical processes, materials, and technology for electrochemical power sources such as batteries, supercapacitors, fuel cells, hydrogen storage and solar cells. It also examines various environmental applications such as photo electrochemistry, photosynthesis, and coating. Organized to give readers an overview of the current field in electrochemical applications, this book features a historical timeline of advancements and chapters devoted to the topics of organic material and conducting polymers for electrochemical purposes. Established experts in the field detail state-of-the-art materials in biosensors, immunosensors, and electrochemical DNA.This edited reference is a valuable resource for graduate and post-graduate students, and researchers in disciplines such as chemistry, physics, electrical engineering and materials science.
- Published
- 2020
39. La souffrance en prison
- Author
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Rolande Chazot, Franck Violet, Rolande Chazot, and Franck Violet
- Abstract
La prison, concentration de misère sociale et de violence, est un lieu de souffrances plurielles pour la personne privée de liberté ; comme pour l'ensemble des professionnels et des bénévoles qui interviennent entre ses murs. Elle demeure un défi pour notre société qui s'ingénie à la tenir à distance du coeur des villes. Un comité de scientifique s'est engagé dans une réflexion sur le sens de la souffrance lié au sens de la peine, et sur les conditions dans lesquelles cette souffrance peut évoluer : dans quelle mesure la prison fait-elle souffrir ceux qui la vivent jour après jour?
- Published
- 2020
40. Thomas von Aquin : Predigerbruder und Professor
- Author
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Ulrich Horst and Ulrich Horst
- Abstract
Das 13. Jahrhundert war eine Zeit des Aufbruchs in Kirche und Gesellschaft. Franziskaner und Dominikaner arbeiteten in den Städten. Predigt und Beichtpastoral setzten theologische Bildung voraus, die jetzt die Universitäten bieten. Thomas von Aquin hat die daraus entstandenen Konflikte mit einer neuen Sicht des päpstlichen Primats und der Funktion der Orden in der Kirche zu lösen versucht.Thomas von Aquin schloss sich 1244 der Gemeinschaft der Dominikaner an. Diese verkörperte einen neuen Ordenstyp, der die Nachfolge des armen und predigenden Christus zum Ziel hatte, das nicht mehr im Monasterium oder in der Einöde, sondern in der Stadt realisiert werden sollte. Da Predigt ein Studium voraussetzt, waren die Bettelmönche bald an den Universitäten zu finden. Die nicht an einen Ort gebundene Seelsorge provozierte den Widerstand des Klerus. Er zeigt, dass ein auf päpstlicher Sendung beruhender Orden keinen Widerspruch zur herkömmlichen Kirchenfassung darstellt. Ekklesiologische Fragen sowie das Verhältnis der apostolischen Armut zum Besitz stehen im Vordergrund wie auch Aspekte des neutestamentlichen Wunderbegriffs und das Problem der Zwangstaufe von Juden.
- Published
- 2017
41. Rice Production Worldwide
- Author
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Bhagirath S. Chauhan, Khawar Jabran, Gulshan Mahajan, Bhagirath S. Chauhan, Khawar Jabran, and Gulshan Mahajan
- Subjects
- Rice trade, Rice
- Abstract
This book addresses aspects of rice production in rice-growing areas of the world including origin, history, role in global food security, cropping systems, management practices, production systems, cultivars, as well as fertilizer and pest management. As one of the three most important grain crops that helps to fulfill food needs all across the globe, rice plays a key role in the current and future food security of the world. Currently, no book covers all aspects of rice production in the rice-growing areas of world. This book fills that gap by highlighting the diverse production and management practices as well as the various rice genotypes in the salient, rice-producing areas in Asia, Europe, Africa, the Americas, and Australia. Further, this text highlights harvesting, threshing, processing, yields and rice products and future research needs. Supplemented with illustrations and tables, this text is essential for students taking courses in agronomy and production systems as well as for agricultural advisers, county agents, extension specialists, and professionals throughout the industry.
- Published
- 2017
42. Landscape Architecture and Digital Technologies : Re-conceptualising Design and Making
- Author
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Jillian Walliss, Heike Rahmann, Jillian Walliss, and Heike Rahmann
- Subjects
- Landscape architecture--Computer-aided design, Landscape design--Data processing, Visualization
- Abstract
Landscape Architecture and Digital Technologies explores how digital technologies are reshaping design and making in landscape architecture. While the potentials of digital technologies are well documented within landscape planning and visualisation, their application within design practice is far less understood. This book highlights the role of the digital model in encouraging a new design logic that moves from the privileging of the visual to a focus on processes of formation, bridging the interface of the conceptual and material, the virtual and the physical.Drawing on interviews and projects from a range of international designers -including, Snøhetta, Arup, Gustafson Porter, ASPECT Studios, Grant Associates, Catherine Mosbach, Philippe Rahm, PARKKIM, LAAC and PEG office of landscape + architecture among others, the authors explore the influence of parametric modelling, scripting, real-time data, simulation, prototyping, fabrication, and Building Information Modelling on the design and construction of contemporary landscapes. This engagement with practice is expanded through critical reflection from academics involved in landscape architecture programs around the world that are reshaping their research and pedagogy to reflect an expanded digital realm.Crossing critical theory, technology and contemporary design, the book constructs a picture of an emerging twenty-first century practice of landscape architecture practice premised on complexity and performance. It also highlights the disciplinary demands and challenges in engaging with a rapidly evolving digital context within practice and education. The book is of immense value to professionals and researchers, and is a key publication for digital landscape courses at all levels.
- Published
- 2016
43. Enseigner les religions
- Author
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Brigitte Caulier, Joël Molinario, Brigitte Caulier, and Joël Molinario
- Abstract
Au cœur des débats actuels sur la tolérance, le dialogue interreligieux et la place des religions dans l'éducation, cet ouvrage rassemble des contributions européennes et américaines autour d'une discipline souvent négligée par les décideurs: l'histoire. Les auteurs évaluent l'apport de cette discipline dans la formation des intervenants et des enseignants, ainsi que dans l'élaboration des contenus d'enseignement. Ils analysent sa place dans la recherche fondamentale et l'enseignement universitaire. C'est l'occasion pour eux de poursuivre un dialogue interdisciplinaire sans compromis qui mobilise les sciences de l'éducation, les sciences sociales et religieuses et la théologie. Enseigner les religions dresse également le panorama de la recherche historienne qui a emprunté plusieurs avenues pour aborder la formation religieuse des populations à convertir ou à maintenir dans la religion ainsi que les enjeux identitaires qui s'y rattachent. Le lecteur pourra se familiariser avec les expériences contemporaines de plusieurs pays qui intègrent l'enseignement des religions à l'école.
- Published
- 2015
44. Receptions
- Author
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Fedou/Berndt and Fedou/Berndt
- Abstract
Le présent ouvrage a son origine dans un congrès de médiévistes qui s'est tenu, du 11 au 14 juin 2008, au Centre Sèvres – Facultés jésuites de Paris. Ce congrès avait été organisé avec le concours et l'appui de l'Institut universitaire de France. Plusieurs institutions avaient accepté d'être représentées dans le comité de patronage: l'Institut Catholique de Paris, la Faculté Notre-Dame, l'École Pratique des Hautes Études (Ve section), l'Institut des Sources Chrétiennes, l'Institut d'Études Augustiniennes et le Centre du Saulchoir. Si ce volume rassemble la plupart des exposés qui ont été donnés lors de ce congrès, il n'en constitue pas moins un ouvrage original qui a sa cohérence propre. Il s'agit de faire converger, à la faveur d'exposés répartis en diverses sections, des préoccupations touchant à la doctrine et à la spiritualité pensée et vécue. En s'attachant au processus de communication à l'œuvre dans le phénomène historique de la réception des Pères, on voudrait montrer, à travers différentes approches, comment ce processus de communication construit, entretient ou réinvente la tradition à laquelle l'Église se réfère comme à un élément fondamental de son identité. La recherche donne l'occasion d'évaluer cette référence aux Pères dans d'autres lieux culturels et ecclésiaux, comme la liturgie, les bulles pontificales, les actes conciliaires, les collections canoniques. De la familiarité avec les écrits des Pères peut encore résulter, pour les hommes d'une société donnée, le façonnement d'un regard sur des réalités sociologiques, anthropologiques, politiques (regard qu'il nous faut aujourd'hui restituer en confrontant les témoignages de nombreuses sources). Enfin, si l'on envisage l'Église comme « congregatio fidelium », l'appréhension du devenir de la tradition ecclésiale ne se limite pas à une histoire des idées telles qu'elles peuvent être recueillies et transmises par l'écrit, mais intègre aussi d'autres dimensions de l'existence chrétienne. - Das vorliegende Werk geht zurück auf einen Kongreß von Mediävisten, der vom 11. bis zum 14. Juni 2008 im Centre Sèvres - Facultés jésuites de Paris stattgefunden hat. Dieser Kongreß wurde organisiert in Zusammenarbeit mit und dank der Unterstützung durch das Institut universitaire de France. Mehrere andere Institutionen haben sich außerdem im Patronat über diese Veranstaltung engagiert: das Institut Catholique von Paris, die Faculté Notre-Dame, die École Pratique des Hautes Études (Ve section), das Institut des Sources Chrétiennes in Lyon, das Institut d'Études Augustiniennes und das Centre du Saulchoir in Paris. Wenn auch dieser Band die meisten Vorträge umfaßt, die auf der Tagung gehalten wurden, so stellt er doch eine eigenständige Publikation dar. Denn er intendiert, die in verschiedene Sektionen gegliederten Beiträge hinsichtlich der kirchlichen Lehre und der gelebten sowie gedachten Spiritualität zusammenzuführen. Dieses Werk formuliert den Kommunikationsprozeß, der den geschichtlichen Vorgang der Kirchenväterrezeptionen belebt. Auf diese Weise wollen Autoren und Herausgeber aufzeigen, wie dieser Kommunikationsprozeß die Tradition konstruiert, unterhält und je neu erfindet, auf die sich die Kirche als ein grundlegendes Element ihrer Identität bezieht. Die hier mitgeteilten Forschungen bieten darüber hinaus die Gelegenheit, die Bezugnahme auf die Kirchenväter auch in anderen kulturellen und ekklesialen Bereichen zu würdigen, beispielsweise in der Liturgie, in päpstlichen Dokumenten, in Konzilsakten, in Kirchenrechtssammlungen. Die Vertrautheit mit den Schriften der Kirchenväter kann für die Menschen einer bestimmten Gesellschaft auch dazu führen, daß ihre soziologische, anthropologische und politische Wahrnehmung geformt wird (eine Wahrnehmung, die wir heute von neuem bestätigen müssen angesichts der vielen neuen Quellen). Wenn, schließlich, die Kirche als « congregatio fidelium » verstanden wird, beschränkt sich die Bewertung des Werdens der kirchlichen Tradition nicht auf
- Published
- 2015
45. Arts et territoires à l'ère du développement durable
- Author
-
Myrtille Roy-Valex, Guy Bellavance, Myrtille Roy-Valex, and Guy Bellavance
- Abstract
Longtemps considérés comme facteurs marginaux du développement régional, les arts et la culture sont aujourd'hui des maîtres-mots en matière d'aménagement des territoires. La prolifération de quartiers'culturels'dans les villes occidentales, et bien au-delà, en témoigne éloquemment. Bassin d'emplois, facteur d'attractivité touristique, valeur d'ambiance, etc., en quel sens les pratiques artistiques sont-elles mobilisées par ces nouveaux enjeux de développement? Cette nouvelle économie culturelle se conjugue en fait à des perspectives de développement durable et relève non seulement de logiques économiques instrumentales mais aussi de logiques écologiques, environnementales et sociales. Cet ouvrage se penche sur la situation des arts au regard de ces nouvelles formes et stratégies de développement des territoires par la culture, réunissant les contributions de chercheurs européens et nord-américains issus des différentes disciplines des sciences sociales et dont les travaux s'inscrivent dans le champ des études urbaines-régionales et des études de la culture. Les dimensions économiques, géographiques, politologiques, sociologiques, symboliques, sémiotiques et cognitives de cette nouvelle économie sont au cœur de l'analyse. Chacune des contributions propose un retour critique sur cette nouvelle conjoncture où les arts sont mobilisés au nom du développement durable des territoires.
- Published
- 2015
46. Time Out Paris
- Author
-
Out, Editors of Time and Out, Editors of Time
- Abstract
Time Out's resident team helps you get the best from the fascinating French capital in this annual guide. Along with detailed coverage of the Louvre, the Eiffel Tower and all the major attractions, the Time Out Paris Guide gives you the inside track on local culture, with illuminating features and independent reviews throwing the spotlight on everything from ancient street corner cafes to vital new nightclubs.
- Published
- 2014
47. French Grammar and Usage
- Author
-
Roger Hawkins, Richard Towell, Roger Hawkins, and Richard Towell
- Subjects
- French language--Textbooks for foreign speakers--English, French language--Grammar
- Abstract
Long trusted as the most comprehensive, up-to-date and user-friendly grammar available, French Grammar and Usage is a complete guide to French as it is written and spoken today. It includes clear descriptions of all the main grammatical phenomena of French, and their use, illustrated by numerous examples taken from contemporary French, and distinguishes the most common forms of usage, both formal and informal.Key features include:Comprehensive content, covering all the major structures of contemporary French User-friendly organisation offering easy-to-find sections with cross-referencing and indexes of English words, French words and grammatical termsClear and illuminating examples help students at all stage of their degreeUseful indications of what cannot be said as well as what canRevised and updated throughout, this new edition offers updated examples to reflect current usage, new headers to include chapter number and section parts as well as enhanced cross-referencing for easier reference and expanded and more nuanced explanations of notoriously difficult points of grammar.The combination of reference grammar and manual of current usage is an invaluable resource for students and teachers of French at the intermediate to advanced levels.This Grammar is accompanied by the Practising French Grammar: A Workbook (ISBN 978-1-13-885119-1) which features related exercises and activities and a companion website offering additional resources at www.routledge.com/cw/hawkins.
- Published
- 2013
48. Ideas Under Fire : Historical Studies of Philosophy and Science in Adversity
- Author
-
Jonathan Lavery, Louis Groarke, William Sweet, Jonathan Lavery, Louis Groarke, and William Sweet
- Subjects
- Science--History, Philosophy, Philosophy--History
- Abstract
Since Aristotle's famous declaration that the speculative sciences originated with the emergence of a leisure class, it has been accepted as a truism that intellectual activity requires political stability and leisure in order to flourish. Paradoxically, however, some of the most powerful and influential contributions to Western intellectual culture have been produced in conditions that were adverse–indeed hostile–to intellectual activity. Examples include Socrates'stirring defense of the examined life before a hostile Athenian jury, Boethius writing The Consolation of Philosophy under the specter of impending torture and execution, Galileo devising key notions for modern mechanics while under house arrest, and Jean-Paul Sartre drafting portions of Being and Nothingness in his war diaries, to name only a few of the most famous incidents–all extraordinary achievements spawned, developed or completed in adversity. In cases such as these, a philosopher or scientist must manage somehow to remain intellectually creative and focused despite living in conditions that are adverse or hostile to thought. In brief, they are working on ideas under fire. This book is a survey of several momentous cases of philosophers and scientists working under fire. Each chapter of Ideas Under Fire explores a particular case or set of related cases. For each case contributors consider two questions: How did the individual at the center of a particular moment of discovery overcome such formidable obstacles to leisure and conceptually abstract thought? And how did adversity shape their thinking under fire?Each chapter has been written by a specialist on its respective subject, and the book covers every period of Western history. All the chapters are written in an accessible style that is intended to appeal to both specialists and generalists.
- Published
- 2013
49. The Evolution of Negation : Beyond the Jespersen Cycle
- Author
-
Pierre Larrivée, Richard Ingham, Pierre Larrivée, and Richard Ingham
- Subjects
- Grammar, Comparative and general--Negatives, Grammar, Comparative and general--Syntax, Polarity (Linguistics)
- Abstract
Why do grammars change? The cycle of negation proposed by Jespersen is crucially linked to the status of items and phrases. The definition of criteria establishing when a polarity item becomes a negative element, and the identification of the role of phrases for the evolution of negation are the two objectives pursued by the contributions to this volume. The contributions look at the emergence of negative items, and their relation within a given sentence, with particular reference to English and French. The comparative perspective supports the documentation of the fine-grained steps that shed light on the factors that (i) determine change and those that (ii) accompany actuation, which are considered through a dialogue between functionalist and formalist approaches. By looking at the place of negation in the architecture of the sentence, they take up the debate as to the relevance of phrasal projections and consider the role of features. Focusing on the make-up of individual items makes it possible to re-conceptualise the Jespersen cycle as the apparent result of the documented evolution patterns of individual (series of) items. This novel perspective is solidly grounded on an extensive use of the complete, up to date bibliography, and will contribute to shape future research.
- Published
- 2011
50. French Grammar and Usage
- Author
-
Hawkins, Roger, Towell, Richard, Hawkins, Roger, and Towell, Richard
- Subjects
- French language--Textbooks for foreign speakers--English, French language--Grammar
- Abstract
Long trusted as the most comprehensive, up-to-date and user-friendly grammar available, French Grammar and Usage provides students and teachers with a complete guide to French as it is written and spoken today.
- Published
- 2010
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