WorldWideScience

Sample records for aux energies intermediaires

  1. Photoproduction de Mesons sur le Nucleon aux Energies Intermediaire (in French) [Photoproduction of mesons on the nucleon at intermediate energies

    Energy Technology Data Exchange (ETDEWEB)

    Guidal, Michel [Univ. of Paris, Orsay (France)

    1996-12-13

    One object of this thesis is to propose a model taking account of low transfer reaction mechanisms for a series of photoproduction reactions on nucleons for photon energies ≳4 GeV. If our comprehension of processes with low transfers is correct, then extrapolating our model in the domain of large transfers and the comparison with data supplied will give us information on the domains in energy and transfers from which an interpretation of reactions in terms of the "soft" process ceases to be valid. In the domain of large transfers, only one approach in terms of "hard" process can then explain the data. We are interested in electromagnetic photoproduction reactions because the probe, firstly, interacts with the target via an exact and well known mechanism (described by the QED theory) and also eliminates the interaction phenomena in the initial state. No probe is as well known as the photon. The extraction of reaction mechanisms, amplitudes and coupling constants match is made easier than in the case of hadronic probes. The energy domain Eγ >4 GeV studied is particularly interesting because it is from this energy of incident photons that can be expected to achieve large enough pulse transfers to hope for emergence of hard processes and therefore see the cessation of validity of interpretation of hadron models. Also, resonance effects are minor and do not interfere with our interpretations. Experimentally, this area is widely unexplored and the new generation accelerators of a large duty cycle (CEBAF, MAMI, ESRF, ELF, ...) combined with 4π detectors will allow to precisely measure low cross sections reactions of a large transfer. We first study pion photoproduction reactions on nucleon because they are the most experimentally accessible reactions and many data of high energy and low transfers exist. This will require strong constraints on the model parameters of the numerous analyses performed previously. Then we'll move on to kaon photoproduction

  2. Photoproduction of mesons on the nucleon at intermediate energies; Photoproduction de mesons sur le nucleon aux energies intermediaires

    Energy Technology Data Exchange (ETDEWEB)

    Guidal, M

    1997-01-01

    In this work a model is proposed to simulate the photoproduction of pseudoscalar mesons ('PI' and K) on the nucleon at high energy. This model is based on the exchange of mesonic or baryonic Regge trajectories, it is gauge invariant and it uses a Feynman diagram formalism inspired from isobaric models. The measurements concerning the following reactions {gamma}p {yields} n{pi}{sup +}, {gamma}n {yields} p{pi}{sup -}, {gamma}p {yields} p{pi}{sup 0} and {gamma}n {yields} n{pi}{sup 0} are reviewed and the new model is confronted to the experimental results. The model gives a reasonable and coherent description of these 4 reactions. The model has also been applied to the photoproduction of strange mesons and of {lambda} and {sigma} baryons and has been extrapolated at low energy to the threshold of the reaction, the model matches the results even up to E{sub {gamma}} = 2 GeV for differential cross-sections and recoil polarization. An attempt has been made to associate a Regge based description, which is valid with low transfers, with perturbative quantum chromodynamics which is valid with high transfers. The model relies on the saturation of trajectories in the high transfer region and on the counting laws that give the right variation of the cross-section. It seems that a model based on linear trajectories can be reliable up to 4 GeV. The domain of high transfer has been too little investigated to provide enough experimental data to validate the model. An experiment whose purpose is to study the photoproduction of {phi} at high transfer, is proposed. This experiment requires an accelerator with high useful cycle because of the smallness of the expected cross-section. The CEBAF (continuous electron beam accelerator facility) as well as the CLAS 4{pi} detector is presented. The study of {gamma}p {yields} p{phi} and {gamma}p {yields} K{lambda}{sup *} (1520) requires the discrimination of kaons from pions so the measurement of 180 ps as time resolution allows the

  3. Emission of fragments in heavy ion-collisions at Fermi energy; Modes de production des fragments dans les collisions d'ions lourds aux energies intermediaires

    Energy Technology Data Exchange (ETDEWEB)

    Normand, J

    2001-10-01

    The study of reaction mechanisms in Fermi energy domain has shown the dominant binary character of the process. The two heavy sources produced after the first stage of the interaction (the quasi-projectile QP and the quasi-target QT) can experience various decay modes from evaporation to multifragmentation. However, the presence of light fragments at mid rapidity cannot be explained by the standard decay of the QP and the QT. To understand the mechanisms producing such a contribution, the break-up of the QP has been studied on the following systems: Xe+Sn from 25 to 50 MeV/A, Ta+Au and Ta+U at 33, 39.6 MeV/A and U+U at 24 MeV/A. The experiment has been performed at GANIL with the INDRA multidetector. The particular behaviour of the heaviest fragment and the correlation between the charge and the velocity of the fragments suggest a shape deformation followed by the rupture of a neck formed in between the two partners of the collision. The heaviest fragment could be the reminiscence of the projectile. A method based on the angular distribution of the heaviest fragment has allowed to separate the statistical break-up of the QP and the non equilibrated break-up. The statistical break-up ranges from 30 % to 75 % of the break-ups. The comparison of the statistical component with a statistical model gives information about the charge, the angular momentum and the temperature of the QP. The comparison of the non equilibrated component with dynamical models could give information about the parameters of the nuclear interaction in medium. (author)

  4. Dilepton spectroscopy at intermediate energies; the carbon - carbon reaction at 1 GeV/A; Spectroscopie des dileptons aux energies intermediaires; la reaction carbone - carbone A 1 GeV/A

    Energy Technology Data Exchange (ETDEWEB)

    Prunet, M.

    1995-06-01

    The Physics context of this work is heavy ion collisions at relativistic energies where di-electron provide informations on the produced hot and dense nuclear matter. The experiment is performed by the DiLepton Spectrometer (DLS) Collaboration at the Lawrence Berkeley`s Bevalac. After a description of the apparatus, we review the whole program and the main results so far obtained: first evidence of a significant di-electron signal at energies above 1 GeV/A; improvement of the understanding of di-electron production (electromagnetic decays of hadrons, {pi}{sup +}{pi}{sup -} annihilation and hadronic Bremsstrahlung). The results of p-p, p-d reactions from 1 to 4.9 GeV/A show that hadronic Bremsstrahlung (pp, pn) should be reformulated. Our analysis, optimized on the reaction Carbon-Carbon at 1 GeV/A, has been applied to {alpha}-Ca and d-Ca. We have developed two main aspects: improvement of the time resolution (500 ps) in order to eliminate all of the protons. Improvement of the space resolution (300 {mu}) for better mass resolution, in particular in the {rho} region. We obtain the cross section of di-electron production as a function of mass, transverse momentum and rapidity from the C-C, {alpha}-Ca and d-Ca reactions at 1 GeV/A. We also compare the cross section for all of the measured systems at 1 GeV/A, including Ca-Ca, and we show a (ApAt){sup {alpha}} dependence with {alpha} {approx_equal} 1.1. A study of the associated multiplicity has also been performed. Nevertheless, the limited acceptance of the DLS and its poor mass resolution to identify the {rho}, {omega} vector mesons, do not allow to conclude on hadron behaviour in nuclear matter. This point is one of the main goal of the HADES project at GSI (Darmstadt), which we give a brief description of the main features. (authors). 60 refs.

  5. Relation between hard photon production and impact parameter in heavy ion collisions at intermediate energies; Dependance de la production de photons durs avec le parametre d`impact dans les collisions entre ions lourds aux energies intermediaires

    Energy Technology Data Exchange (ETDEWEB)

    Martinez Garcia, G.

    1994-06-01

    Hard photons produced in heavy-ions collisions at intermediate energies have been used in order to study hot and compresses nuclear matter created in these collisions (at Ganil). It was found that Bremsstrahlung radiation emitted in np collisions is the main mechanism of hard-photon production for the whole range of impact parameter. Moreover, it was observed a substantial decrease of the hardness of hard-photon spectrum. The BUU model reproduces very well the experimental results, showing that the hardness of the spectrum reflects, mainly, nuclear-matter compression in the first stage of the collision. A new method was developed to measure the density of the nuclear matter created at the beginning of the collision. BUU results and some experimental evidences point out that a significant contribution of hard photons are produced in the last stage of the collision: thermal hard photons. These photons are sensitive to the density oscillation of nuclear matter. Its production cross-section will constitute a measurement of the compressibility of nuclear matter and its spectrum a measure of the temperature. (from author) 64 figs., 60 refs.

  6. Intermediate energies heavy ion collisions : study of the charged particles emission dynamics and emitters characterization; Collisions d`ions lourds aux energies intermediaires: etude de la dynamique d`emission des particules chargees et caracterisation des emetteurs

    Energy Technology Data Exchange (ETDEWEB)

    Bauge, E.

    1994-07-01

    In heavy ion collisions at intermediate energies, reaction processes are ranging from slow processes where equilibrium is achieved between every emission, up to direct processes where nucleon nucleon scattering and phase space availability are the deciding factors. In order to investigate this transition, both the emission dynamics and the characteristics of the emitter have been studied, both theoretically and experimentally in the AMPHORA detector, for the systems 7, 17, 27 and 34 AMeV, {sup 40}Ar+Al, {sup 40}Ar+Cu and {sup 40}Ar+Ag. First, the linear momentum transfer of the most central collisions has been evaluated for these systems, by measuring the velocity of heavy residues. Then, by measuring azimuthal angle correlations functions, and by comparing them with statistical model predictions, the average angular momentum of the emitter has been evaluated. To study the charged particles emission dynamics, experimental azimuthal angle and relative momentum correlation functions have been compared with simulations based on a classical trajectory model. Finally, predictions of an advanced BUU model have been studied for the system 34 AMeV 40 Ar+Al. (authors). 69 refs., 52 figs., 5 tabs.

  7. Statistical and off-equilibrium production of fragments in heavy ion collisions at intermediate energies; Production statistique et hors-equilibre de fragments dans les collisions d`ions lourdes aux energies intermediaires

    Energy Technology Data Exchange (ETDEWEB)

    Bocage, Frederic [Lab. de Physique Corpusculaire, Caen Univ., 14 - Caen (France)

    1998-12-15

    The study of reaction products, fragments and light charged particles, emitted during heavy-ion collisions at intermediate energies has shown the dominant binary dissipative character of the reaction, which is persisting for almost all impact parameters. However, in comparison with this purely binary process, an excess of nuclear matter is observed in-between the quasi-projectile and the quasi-target. To understand the mechanisms producing such an excess, this work studies more precisely the breakup in two fragments of the quasi-projectile formed in Xe+Sn, from 25 to 50 MeV/u, and Gd+C and Gd+U at 36 MeV/u. The data were obtained during the first INDRA experiment at GANIL. The angular distributions of the two fragments show the competition between statistical fission and non-equilibrated breakup of the quasi-projectile. In the second case, the two fragments are aligned along the separation axis of the two primary partners. The comparison of the fission directions and probabilities with statistical models allows us to measure the fission time, as well as the angular momentum, temperature and size of the fissioning residue. The relative velocities are compatible with Coulomb and thermal effects in the case of statistical fission and are found much higher for the breakup of a non-equilibrated quasi-projectile, which indicates that the projectile was deformed during interaction with the target. Such deformations should be compared with dynamical calculations in order to constrain the viscosity of nuclear matter and the parameters of the nucleon-nucleon interaction, (author) 148 refs., 77 figs., 11 tabs.

  8. Examination of the conditions of a broadening of the general tax for polluting activities to the intermediate energy consumptions. Incentive mechanisms for the abatement of greenhouse gas emissions; Examen des conditions d'un elargissement de la TGAP aux consommations intermediaires d'energie. Mecanismes incitatifs a la reduction des emissions de gaz a effet de serre

    Energy Technology Data Exchange (ETDEWEB)

    Bureau, D

    2000-05-15

    Among the various existing incentive mechanisms for the abatement of greenhouse gas emissions, like the pollution regulations and the financial help for energy mastery, this document analyzes the conditions of efficiency of the negotiated voluntary agreements and of the tradable emission quotas and their articulation with the fiscality. (J.S.)

  9. White Book on means of extending the general tax on polluting activities to intermediary energy consumptions of enterprises; Livre blanc sur les modalites de l'extension de la taxe generale sur les activites polluantes aux consommations intermediaires d'energie des entreprises

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-10-11

    The government decided to engage France in a firm action of reducing the pollutant emission damaging the environment or producing the greenhouse effect. To this aim the taxation upon the consumptions of rare resources the use of which results in an important pressure upon environment, as the energy for instance, constitutes an essential complement to other tools, as for instance, regulations, technical norms, ecological labels, assistance for investments, etc. Thus the fiscal policy constitutes a perennial lever of inciting actors, particularly those acting in economy, to optimize and control their energy consumption or to reduce their greenhouse gas emission. Any pollutant emission avoided represents not only a supplementary protection of the environment but also, in time, the avoidance of a reparatory expenditure for the entire society. To this aim the Parliament has approved in 1999 the creation of a general tax on polluting activities (TGAP) intended to prevent first the local and diffuse pollutions which will be enlarged since 2001 to prevent the global pollutions, first of those resulting from greenhouse gas emissions. France engaged itself in the frame of Kyoto conference protocol, adopted in December 1997, to stabilize in 2010 its gas emissions to the level attained in 1990. Actually, taking into account the prospects for economic growth, this engagement needs supplementary efforts. The government's decision, announced last 20 May, of enlarging the TGAP since 2001 to intermediary energy consumptions, is a contribution to this objective. Concerned about the France industry competitiveness, namely to the particular situation of the intensive energy enterprises, exposed to international competition, the government judged advisable to proceed in a large consultation of the concerned economic actors before implementing this enlargement. The White Book makes this engagement concrete. The accuracy of the answers given to the questions, posed in its second

  10. Examination of the conditions of a broadening of the general tax for polluting activities to the intermediate energy consumptions, examination of the conditions of exoneration and attenuation for the energy uses in the industry; Examen des conditions d'un elargissement de la TGAP aux consommations intermediaires d'energie, examen des conditions d'exoneration et d'attenuation des usages d'energie dans l'industrie

    Energy Technology Data Exchange (ETDEWEB)

    Beaulinet, M

    2000-05-15

    This document examines the conditions for a broadening of the general tax on polluting activities to the intermediate energy consumptions in order to reinforce the fight against greenhouse effect and to better master the energy consumption. It analyses the characteristics of each energy source with respect to the principle of a taxation of the consumptions. Finally, several scenarios are analyzed to show the advantage and drawbacks of such a system. A first evaluation and a preliminary tariffing are given. (J.S.)

  11. Investigation of the core-halo structure of the neutron-rich nuclei {sup 6}He and {sup 8}He by intermediate-energy elastic proton scattering at high momentum transfer; Etude de la structure coeur-halo des noyaux riches en neutron {sup 6}He et {sup 8}He par la diffusion elastique de protons aux energies intermediaires etendue a la region du premier minimum de diffraction

    Energy Technology Data Exchange (ETDEWEB)

    Aksouh, F

    2002-12-01

    The elastic proton scattering from the halo nuclei {sup 6}He and {sup 8}He was investigated in inverse kinematics at energies around 700 MeV/u with the aim to deduce the differential cross sections for the region of high momentum transfer, covering the first diffraction minimum. For this purpose, a liquid-hydrogen target was specially developed and used for the first time allowing to obtain low-background data as compared to commonly used targets made from C-H compounds. Previous data taken in the region of small momentum transfer were sensitive to the size and the peripheral shape of the total nuclear matter density distribution but not to the inner part. The present data allow for a more detailed insight in the structure of the alike core in {sup 6,8}He through a better determination of the matter density distributions. Several density distributions calculated from different microscopic models were used to derive elastic scattering cross sections which are compared with the obtained data. (author)

  12. 1. contribution of the dynamics on the reactions mechanisms in the heavy ions collisions at the intermediary energies (20-100 MeV/A) for the light systems. 2. management of radioactive wastes by new options: nuclear data measurement programme between 20 and 150 MeV; 1. role de la dynamique sur les mecanismes de reactions dans les collisions d'ions lourds aux energies intermediaires (20-100 MeV/A) pour des systemes legers. 2. gestion des dechets radioactifs par des options nouvelles: programme de mesures de donnees nucleaires entre 20 et 150 MeV

    Energy Technology Data Exchange (ETDEWEB)

    Eudes, Ph

    2000-09-22

    The first part concerns the features of emitted charged particles in heavy ions reactions that have been studied in the framework of the semi classical Landau-Vlasov approach for the light system Ar + Al at 65 MeV/nucleon incident energy. The second part is devoted to the radioactive waste management (transmutation), but it was necessary to increase the data banks evaluated in neutrons up to 150-200 MeV and to create a data bank in protons. In the European framework it was decide to focus on three representative elements: lead (spallation target), iron (structure material) and uranium (actinide). (N.C.)

  13. Controlling the energy bill thanks to renewable energies; Maitriser la facture energetique grace aux energies renouvelables

    Energy Technology Data Exchange (ETDEWEB)

    Anon.

    2011-07-01

    An average rise of 10% of electricity prices was taxed to French companies between June 2010 and June 2011. The reason is the increase of oil prices and the investments necessary for the maintenance of the French nuclear power plants. In parallel, the price of electricity from renewable energy sources is still decreasing, in particular thanks to technological progresses in this domain, and foreseeable in the long term. Therefore, the direct power supply of a factory with a wind power source, in combination or not with a solar source, is technically feasible and economically profitable. This paper presents the experience in this domain of juwi EnR company, specialist in the development of wind and solar projects worldwide. (J.S.)

  14. Thermal, intermediate and fast neutron flux measurements using activation detectors; Mesure des flux de neutrons thermiques, intermediaires et rapides au moyen de detecteurs par activation

    Energy Technology Data Exchange (ETDEWEB)

    Brisbois, J.; Lott, M.; Manent, G. [Commissariat a l' Energie Atomique, Fontenay-aux-Roses (France). Centre d' Etudes Nucleaires

    1964-07-01

    The problem of neutron flux measurements using activation detectors is studied in the particular case of protection research. It is shown how it possible, it is possible, using a known thermal flux, to organise a coherent calibration system for all the detectors. The rapid neutron detectors are calibrated with respect to a reference detector (phosphorus) in a natural uranium converter; the intermediate neutron detectors with respect to gold in the axial channel of ZOE. This method makes it possible to minimise the errors due to the activation cross-sections. A brief description is given of the counting room of the Pile Safety Study Service, as well of the practical utilisation characteristics of the counters employed. (authors) [French] Le probleme de la mesure des flux de neutrons au moyen de detecteurs par activation est etudie dans le cas particulier des etudes de protections. On montre comment, a partir d'un flux thermique connu, on peut organiser un systeme coherent d'etalonnage de tous les detecteurs. Les detecteurs de neutrons rapides sont etalonnes par rapport a un detecteur de reference (phosphore) dans un convertisseur en uranium naturel; les detecteurs de neutrons intermediaires, par rapport a l'or dans le canal axial de ZOE, Cette methode permet de minimiser les erreurs dues aux sections efficaces d'activation. On decrit sommairement la salle de comptage du Service d'Etudes de Protections de Piles et on indique les caracteristiques d'emploi pratique des detecteurs utilises. (auteurs)

  15. Law project relative to the energy markets; Projet de loi relatif aux marches energetiques

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2002-09-25

    This document presents the law project relative to the energy markets. It aims to open the french gas market to the competition and defines the gas utilities obligations. The first part presents the main topics of the law: the natural gas distribution access, the natural gas sector regulation, the gas utilities, the natural gas transport and distribution, the underground storage, the control and penalties. The second part details the commission works concerning this law project. (A.L.B.)

  16. Insight on the energy in the United States; Apercus sur l'energie aux Etats-Unis

    Energy Technology Data Exchange (ETDEWEB)

    Jamet, Ph

    2006-11-15

    This document recapitulates the main characteristics and the key data of the energy in the United States (fossil energies, renewable energies, electric power production). The main american strategies are then described as the actions at the international scale during the last five years. The main data of the research programs in the energy domain are presented and the possible consequences of the government change at the Congress are analyzed. (A.L.B.)

  17. DET/MPS - THE GSFC ENERGY BALANCE PROGRAM, DIRECT ENERGY TRANSFER/MULTIMISSION SPACECRAFT MODULAR POWER SYSTEM (MACINTOSH A/UX VERSION)

    Science.gov (United States)

    Jagielski, J. M.

    1994-01-01

    The DET/MPS programs model and simulate the Direct Energy Transfer and Multimission Spacecraft Modular Power System in order to aid both in design and in analysis of orbital energy balance. Typically, the DET power system has the solar array directly to the spacecraft bus, and the central building block of MPS is the Standard Power Regulator Unit. DET/MPS allows a minute-by-minute simulation of the power system's performance as it responds to various orbital parameters, focusing its output on solar array output and battery characteristics. While this package is limited in terms of orbital mechanics, it is sufficient to calculate eclipse and solar array data for circular or non-circular orbits. DET/MPS can be adjusted to run one or sequential orbits up to about one week, simulated time. These programs have been used on a variety of Goddard Space Flight Center spacecraft projects. DET/MPS is written in FORTRAN 77 with some VAX-type extensions. Any FORTRAN 77 compiler that includes VAX extensions should be able to compile and run the program with little or no modifications. The compiler must at least support free-form (or tab-delineated) source format and 'do do-while end-do' control structures. DET/MPS is available for three platforms: GSC-13374, for DEC VAX series computers running VMS, is available in DEC VAX Backup format on a 9-track 1600 BPI tape (standard distribution) or TK50 tape cartridge; GSC-13443, for UNIX-based computers, is available on a .25 inch streaming magnetic tape cartridge in UNIX tar format; and GSC-13444, for Macintosh computers running AU/X with either the NKR FORTRAN or AbSoft MacFORTRAN II compilers, is available on a 3.5 inch 800K Macintosh format diskette. Source code and test data are supplied. The UNIX version of DET requires 90K of main memory for execution. DET/MPS was developed in 1990. A/UX and Macintosh are registered trademarks of Apple Computer, Inc. VMS, DEC VAX and TK50 are trademarks of Digital Equipment Corporation. UNIX is a

  18. Working group on the modes of a TGAP remission or decrease concerning the intermediate energy consumptions; Groupe de travail sur les modalites d'exoneration et d'attenuation d'une tgap sur les consommations intermediaires d'energie

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-04-01

    The french government decided to examine conditions of the application of the TGAP tax on intermediate energy consumption, in order to enforce the fight against the greenhouse effect and to better control the energy consumption. A working group has been created to examine the possibilities of the TGAP remission. This report presents the conclusions of the working group and analyses different scenario. (A.L.B.)

  19. About the renewable and the seas energies in the United States; Apercus sur les energies renouvelables et l'energie des mers aux Etats-Unis

    Energy Technology Data Exchange (ETDEWEB)

    Jamet, Ph

    2006-07-01

    This report aims to bring some information on the regulations and the technologies in the United States in the domain of the seas energies. After a presentation of the different seas and renewable energies and the corresponding regulations in the United States, the author concludes of an energy in its infancy except for the offshore wind power where some big projects are implemented. (A.L.B.)

  20. The contribution of economic theory to the energy debates; L'apport de la theorie economique aux debats energetiques

    Energy Technology Data Exchange (ETDEWEB)

    Percebois, J.

    1999-11-01

    This paper proposes a brief overview of the contributions of the micro- and macro-economic theory to the answer of the following four main questions: 1 - how will change the world energy demand with respect to the economic activity and what will be the determining factors of this demand, globally and per energy source? What are the respective roles of energy prices and technological innovations? How will change the petroleum price and what will be the share of economical and political weight in this change? 2 - how passing on this price to the end-user taking into consideration the national preferences? Is there an optimum price when the energy producing, transporting and distributing company is a monopoly? 3 - what is the optimal structure of a network industry? 4 - how to integrate the local and global externalities characteristic of the energy sector in the economical calculus? (J.S.)

  1. Talk presented to the Second parliamentary gatherings on energy, on 14 October 1999; Intervention aux secondes rencontres parlementaires sur l'energie, le 14 octobre 1999

    Energy Technology Data Exchange (ETDEWEB)

    Pierret, Christian [State Secretary for Industry, French Goverment, Paris (France)

    2000-02-18

    The energy sector records at present deep evolutions all over the world. The energy issues are now almost always international. Besides internationalization and liberalization, increasing preoccupations toward preservation of ecosystems and struggle against climate change became major governmental responsibilities. France assumed in Kyoto commitments in this field which are to be accomplished. In this context of energy policy the State Secretary found worth to underline a number of issues. The first concerns the maintenance of secured resource supply in the new European frame. As about half of the France's energy dependence is related to the imported fossil fuels maintaining the results achieved remains of continual importance. Prospective studies show for the 30 years to come an increase in the hydrocarbon prices while the resources will concentrate themselves in certain zones of the globe. Hence, the government must develop an influencing policy in the choices for electricity producing equipment and energy sources. This is possible by organizing the electricity and gas production by multi-annual planning of investments. The second long-term preoccupation concerns the environment protection the more so as one can not think that the market's spontaneous choices go necessarily toward environment protection. Indeed, the less polluting energies as well as the less polluting uses of energy are not always the cheapest and more rewarding short-term solutions. Consequently, maintaining an action capability within reach of public powers is vital. These objectives, the security of energy supply and environment protection require an energy policy both mastering and diversified. The development of renewable energies resulted in considerable energy savings: 60 million tons of oil equivalents were avoided annually from importation, relative to 1973, what is comparable with the amount of 75 million oil equivalent power supplied by the nuclear sector. The nuclear power

  2. Quantum chromodynamics at high energy, theory and phenomenology at hadron colliders; Chromodynamique quantique a haute energie, theorie et phenomenologie appliquee aux collisions de hadrons

    Energy Technology Data Exchange (ETDEWEB)

    Marquet, C

    2006-09-15

    When probing small distances inside a hadron, one can resolve its partonic constituents: quarks and gluons that obey the laws of perturbative Quantum Chromodynamics (QCD). This substructure reveals itself in hadronic collisions characterized by a large momentum transfer: in such collisions, a hadron acts like a collection of partons whose interactions can be described in QCD. In a collision at moderate energy, a hadron looks dilute and the partons interact incoherently. As the collision energy increases, the parton density inside the hadron grows. Eventually, at some energy much bigger than the momentum transfer, one enters the saturation regime of QCD: the gluon density has become so large that collective effects are important. We introduce a formalism suitable to study hadronic collisions in the high-energy limit in QCD, and the transition to the saturation regime. In this framework, we derive known results that are needed to present our personal contributions and we compute different cross-sections in the context of hard diffraction and particle production. We study the transition to the saturation regime as given by the Balitsky-Kovchegov equation. In particular we derive properties of its solutions.We apply our results to deep inelastic scattering and show that, in the energy range of the HERA collider, the predictions of high-energy QCD are in good agreement with the data. We also consider jet production in hadronic collisions and discuss the possibility to test saturation at the Large Hadron Collider. (author)

  3. Aux origines du monde

    CERN Multimedia

    2004-01-01

    "C'est l'histoire d'une aventure humaine, scientifique, international qui a vu le jour il y a cinquante ans, aux confins de la Suisse et du département de l'Ain. Le plus grand laboratoire de physique des particules du monde, le Cern, a été fondé en 1954. Les festivités organisées à l occasion de cet anniversaire connaîtront leur point d'orgue le 16 octobre prochain, avec portes-ouvertes, accueil de personallités et inauguration d'un monumnet spécifique, le Globe de l'innovation" (2 pages)

  4. Study of heavy ions collision at SIS energies with the detector FOPI; Etude des collisions d'ions lourds aux energies de SIS avec le detecteur FOPI

    Energy Technology Data Exchange (ETDEWEB)

    Bastid, N

    1999-09-23

    The present work has been carried out in the framework of experiments performed with the FOPI detector at the SIS/ESR accelerator facility of GSI-Darmstadt. It is devoted to the study of central and semi-central heavy ion collisions at beam energies ranging from 100 MeV to 2 GeV per nucleon. We present first generalities on relativistic heavy ion collisions then the FOPI detector with a special attention to the FOPI Inner Wall constructed by the Clermont-Ferrand group. The main results of the FOPI collaboration obtained with light and intermediate mass fragments and kaons are presented. A systematic study of the different forms of collection motion of nuclear matter, radial flow in very central reactions, sideward flow and squeeze-out in semi-central collisions, is performed. Further exciting possibilities concerning production and propagation of strangeness at SIS energies will be offered soon with the upgrade of the FOPI detector. The FOPI data have introduced constraints on parameters of theoretical models. Important progress concerning the knowledge of the properties of nuclear matter, the dynamics of the collisions and in-medium effects have been achieved. (author)

  5. Industrial applications of solar energy: deserts, seas, the Alps; Les applications industrielles de l'energie solaire: du desert aux Alpes en passant par la mer

    Energy Technology Data Exchange (ETDEWEB)

    Allani, Y.

    2008-07-01

    In this set of presentation slides, after a review of worldwide energy resources the author presents his innovative technical solution aimed at contributing to future energy supply. An extra-flat solar concentrator was developed to produce industrial steam in the temperature range 150 to 300 {sup o}C. A prototype was operated on the site of the Federal Institute of Technology (EPFL) in Lausanne, Switzerland, for power generation at 12 kW{sub el}. In Ras al Khaimah, United Arab Emirates, the concept of the so-called Solar Island is to be tested. Construction work is underway. A floating circular platform will be equipped with parallel rows of extra-flat solar concentrators. The platform will rotate to follow the sun apparent movement and enhance the power output of the concentrators. A second project is presented that should be realised in the Swiss Alps. In this case the extra-flat concentrators will be mounted on existing steel constructions that prevent snow avalanches on steep grounds. The basic technical data of the two projects are given.

  6. Preliminary study about the necessary concepts and nomenclatures for long duration energy studies; Etude prealable sur les concepts et nomenclatures necessaires aux etudes energetiques sur tres longue periode

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-12-15

    Long duration prospect studies about the worldwide energy demand requires to refer to other, non-economical, disciplines which have different representations of the socio-economic reality and of the evolution dynamics of societies. This study is a multi-disciplinary bibliographic research which aims to identify the categories considered in these disciplines and to show the main elements allowing to answer the questions about energy uses. The bibliographic research is based on a set of key-words which are crossed between each others like: 'categories', 'social behaviour', 'life style', 'energy', 'consumption', 'need', 'development', 'time' etc. The content of each cited bibliographic references is described in a file attached in the appendix of this study. (J.S.)

  7. Les vehicules spatiaux a source d'energie solaire Le Projet Phaetan

    Directory of Open Access Journals (Sweden)

    M. VERNET-LOZET

    1964-06-01

    Full Text Available II est permis, a priori au moins, d'envisager un assez
    grand nombre de mdtliodes pour transformer l'6nergie solaire en energie
    utilisable pour la propulsion d'un vehicule spatial. Toutefois dans la mesure
    ou 1'on s'impose un certain nombre de conditions, entre autres celle de
    produire une poussee qui ne soit pas parfaitement negligeable devant le
    poids du vehicule, on constate que dans l'etat actuel de nos connaissances
    et de nos possibilitcs technologiques, il n'est guere raisonnable de penser
    utiliser une autre methode que celle, bien classique et sans doute demodee
    aux yeux de certains qui eonsiste a passer par l'intermediaire d'une machine
    thermique.
    II apparait clairement d'ailleurs que l'originalite d'un tel mode de
    propulsion ne reside pas dans le systeme de propulsion lui-meme qui pourra
    etre n'importe quel type de propulseur electrique, le clioix pouvant etre
    fait en fonction de la mission que l'on se propose d'effectuer et de la charge
    utile que l'on desire transporter, mais au contraire dans la conception de
    l'ensemble constitue par le miroir, la machine thermique et le condenseur.
    Nous nous proposons sur la base du projet « Phaeton » actuelleinent en
    cours d'etude a la Societe d'Etude de la Propulsion par Reaction, d'examiner
    un peu plus en detail qu'il ne l'a ete fait jusqu'ici, quels iinperatifs regissent
    le dimensionnement d'une telle machine.

  8. INTRODUCTION AUX EQUATIONS DIFFERENTIELLES STOCHASTIQUES

    OpenAIRE

    ABI AYAD, Ilham

    2012-01-01

    Dans ce mémoire, on introduit les équations di érentielles (EDS) qui sont une généralisation de la notion d'équations di érentielles prenant en compte une perturbation aléatoire. Celle ci est exprimée à l'aide du mouvement brownien. Ce document est composé de quatre chapitres. Le premier chapitre est consacré aux rappels des résultats importants en calcul stochastique concernant les processus stochastiques. On donnera les principales propriétés du mouvement brownien ainsi qu...

  9. Communities and energy: response to non-grid energy needs in reducing poverty in West Africa; Villes - Energie: repondre aux besoins hors reseaux en reduisant la pauvrete en Afrique de l'ouest

    Energy Technology Data Exchange (ETDEWEB)

    Koumain, M-C.; Seck, A. F.; Ekouevi, K.

    1999-12-31

    Initiatives undertaken by west African countries to ensure an efficient and adequate supply of wood for their urban centres not supplied by grid electricity are described. Although results of efforts over the past two decades have been mixed, the majority of countries are continuing to deal with the problems of biomass energy, the traditional source of fuel in this region. Programs of several countries -- Senegal, Mauritania, Benin, Togo, among others -- encouraged by the Regional Program for the Traditional Energy Sector (Programme regionale pour la Secteur des Energies Traditionelles, RPTES) and financed with aid from various developed countries, are analyzed in an effort to synthesize salient factors involved with the planning and management of traditional energy sources ( more recently referred to as 'non-grid energy sources' to avoid pejorative connotations attached to the word 'traditional'). The paper also attempts to assess the importance of the subject based on statistical data, investigate the factors responsible for the demand for wood biomass energy by urban households, and summarize information about physical availability and the role this energy source plays in reducing the poverty rampant in most countries of west Africa. The study concludes by pointing out the importance of the connection between non-grid energy sources and a thematic approach to development, revenue generation and stable and responsible governments. 8 refs., 3 figs.

  10. Application du groupe de renormalisation aux conducteurs organiques quasi-unidimensionnels soumis a un champ magnetique

    Science.gov (United States)

    Hubert, Laurent

    particule, la situation est plus complexe puisque la structure de bande et la forme de la surface de Fermi deviennent pertinentes. Sous bon nesting, un champ magnetique le champ magnetique defavorise les phases magnetiques du type habituellement observe en champ nul. Nous obtenons en effet que leur temperature de transition diminue avec le champ magnetique. Sous deviations au nesting suffisant pour detruire l'ordre magnetique a champ nul, nous montrons que le nesting quantifie est compatible avec l'analyse du GRQ pour des champ faibles et intermediaires. Ainsi, le nesting quantifie fournit toujours une excellente base de description des cascades de phases d'onde de densite de spin induite en champ magnetique. D'autre part, l'utilisation du GRQ permet de mettre en evidence l'existence d'un regime de champ fort. Dans ce regime le mouvement coherent des electrons dans la direction transverse aux chai ne est fortement reduit. De cette reduction de la coherence transverse les regles de renormalisation 1D qui persistent a une temperature plus basse que dans les autres regimes. Ceci donne la possibilite d'atteindre grace au champ magnetique des etats de type localisation de charge et spin-Peierls qui sont habituellement observes, en champ nul, dans des composes ayant un caractere unidimensionnel beaucoup plus prononce.

  11. Hard processes and fragmentation in a unified model for interactions at ultra-relativistic energies; Les processus durs et la fragmentation dans un modele unifie pour les interactions aux energies ultra-relativistes

    Energy Technology Data Exchange (ETDEWEB)

    Drescher, H.J

    1999-06-11

    In this work we have developed hard processes and string fragmentation in the framework of interactions at relativistic energies. The hypothesis of the universality of high energy interactions means that many elements of heavy ion collisions can be studied and simulated in simpler nuclear reactions. In particular this hypothesis implies that the fragmentation observed in the reaction e{sup +}e{sup -} follows the same rules as in the collision of 2 lead ions. This work deals with 2 nuclear processes: the e{sup +}e{sup -} annihilation reaction and the deep inelastic diffusion. For the first process the string model has been developed to simulate fragmentation by adding an artificial breaking of string due to relativistic effects. A monte-Carlo method has been used to determine the points in a Minkowski space where this breaking occurs. For the second reaction, the theory of semi-hard pomerons is introduced in order to define elementary hadron-hadron interactions. The model of fragmentation proposed in this work can be applied to more complicated reactions such as proton-proton or ion-ion collisions.

  12. Quantum mechanical study of molecular collisions at ultra-low energy: applications to alkali and alkaline-earth systems; Etude quantique de collisions moleculaires a ultra-basse energie: applications aux alcalins et alcalino-terreux

    Energy Technology Data Exchange (ETDEWEB)

    Quemener, G

    2006-10-15

    In order to investigate the collisional processes which occur during the formation of molecular Bose-Einstein condensates, a time-independent quantum mechanical formalism, based on hyperspherical coordinates, has been applied to the study of atom-diatom dynamics at ultra-low energies. We present theoretical results for three alkali systems, each composed of lithium, sodium or potassium atoms, and for an alkaline-earth system composed of calcium atoms. We also study dynamics at large and positive atom-atom scattering length. Evidence for the suppression of inelastic processes in a fermionic system is given, as well as a linear relation between the atom-diatom scattering length and the atom-atom scattering length. (author)

  13. Thermal Bremsstrahlung probing nuclear multifragmentation in nucleus-nucleus collisions around the Fermi energy; Bremsstrahlung thermique comme sonde de la multifragmentation nucleaire dans les collisions noyau-noyau aux energies de Fermi

    Energy Technology Data Exchange (ETDEWEB)

    D' Enterria, D.G

    2000-05-15

    The thermodynamical properties of nuclear matter at moderate temperatures and densities, in the vicinity of the predicted nuclear liquid-gas phase transition, are studied using as experimental probe the hard-photons (E{sub {gamma}} > 30 MeV) emitted in nucleus-nucleus collisions. Photon and charged-particle production in four different heavy-ion reactions (Ar{sup 36} + Au{sup 197}, Ag{sup 107}, Ni{sup 58}, C{sup 12} at 60 A*MeV) is measured exclusively and inclusively coupling the TAPS photon spectrometer with two charged-particle and intermediate-mass-fragment detectors covering nearly 4{pi}. We confirm that Bremsstrahlung emission in first-chance (off-equilibrium) proton-neutron collisions (pn{gamma}) is the dominant origin of hard photons. We also firmly establish the existence of a thermal radiation component emitted in second-chance proton-neutron collisions. This thermal Bremsstrahlung emission takes place in semi-central and central nucleus-nucleus reactions involving heavy targets. We exploit this observation i) to demonstrate that thermal equilibrium is reached during the reaction, ii) to establish a new thermometer of nuclear matter based on Bremsstrahlung photons, iii) to derive the thermodynamical properties of the excited nuclear sources and, in particular, to establish a 'caloric curve' (temperature versus excitation energy), and iv) to assess the time-scales of the nuclear break-up process. (author)

  14. Contributing to global computing platform: gliding, tunneling standard services and high energy physics application; Contribution aux infrastructures de calcul global: delegation inter plates-formes, integration de services standards et application a la physique des hautes energies

    Energy Technology Data Exchange (ETDEWEB)

    Lodygensky, O

    2006-09-15

    Centralized computers have been replaced by 'client/server' distributed architectures which are in turn in competition with new distributed systems known as 'peer to peer'. These new technologies are widely spread, and trading, industry and the research world have understood the new goals involved and massively invest around these new technologies, named 'grid'. One of the fields is about calculating. This is the subject of the works presented here. At the Paris Orsay University, a synergy emerged between the Computing Science Laboratory (LRI) and the Linear Accelerator Laboratory (LAL) on grid infrastructure, opening new investigations fields for the first and new high computing perspective for the other. Works presented here are the results of this multi-discipline collaboration. They are based on XtremWeb, the LRI global computing platform. We first introduce a state of the art of the large scale distributed systems, its principles, its architecture based on services. We then introduce XtremWeb and detail modifications and improvements we had to specify and implement to achieve our goals. We present two different studies, first interconnecting grids in order to generalize resource sharing and secondly, be able to use legacy services on such platforms. We finally explain how a research community like the community of high energy cosmic radiation detection can gain access to these services and detail Monte Carlos and data analysis processes over the grids. (author)

  15. Speech by Prime Minister Francois Fillon. Visit of the Jules Horowitz experimental reactor works on the Commissariat a l'Energie et aux Energies Alternatives site. Cadarache, May 3, 2010; Discours du Premier ministre Francois FILLON Cadarache, lundi 3 mai 2010. Visite du chantier du Reacteur experimental Jules Horowitz sur le site du Commissariat a l'Energie Atomique et aux Energies Alternatives

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2010-07-01

    In this speech, the French Prime Minister evokes the present context, the importance of strategic technologies, and the challenge of investing in these technologies within a context of reduction of public expenses. He comments the decision of his government to finance research and education activities in different domains, and more specifically in the energy sector with this fourth generation Jules Horowitz experimental reactor. He recalls that the nuclear sector has always been very important to the eyes of the successive French governments, and outlines how this reactor will contribute to reactor operational optimization, lifetime extension and safety, nuclear fuel development, etc.

  16. Substrate-dependent Aux cluster: A new insight into Aux/CeO2

    Science.gov (United States)

    Zhu, Kong-Jie; Yang, Yan-Ju; Lang, Jia-Jian; Teng, Bo-Tao; Wu, Feng-Min; Du, Shi-Yu; Wen, Xiao-Dong

    2016-11-01

    To theoretically study the structures of metal clusters on oxides is very important and becomes one of the most challenging works in computational heterogeneous catalysis since many factors affect their structures and lead to various possibilities. In this work, it is very interesting to find that the stable structures and stability evolution of Aux clusters on ceria are varied with different index surfaces of CeO2. The corresponding reasons in chemical, geometric and electronic properties are systematically explored. Aux (x = 1-4) clusters prefer to separately disperse at the O-O bridge sites on CeO2(100) due to the low coordination number of surface O; while aggregate due to the strong Au-Au attractions when x is larger than 4. Owing to the uniform distribution of O-O bridge sites on CeO2(111) and (100), the most stable configurations of Aux are 3D structures with bottom atoms more than top ones when x is larger than 4. However, 2D configurations of Aux/CeO2(110) (x < 10) are more stable than the corresponding 3D structures due to the particular O-O arrangement on CeO2(110). 3D Aux clusters across O-O-Y lines are suggested as the most stable configurations for Aux/CeO2(110) (x ≥ 10). The present work gives a detailed example for the theoretical study of metal clusters on oxide, and will shed light into the design for controllable synthesis of ceria-based catalysts with metal nanoparticles supported on CeO2.

  17. Assistance et discipline, introduction aux articles

    Directory of Open Access Journals (Sweden)

    Jean-Claude Vimont

    2012-07-01

    Full Text Available Quand Michel Foucault publie Surveiller et punir en 1975, aux lendemains de trois années de mutineries dans l'univers carcéral, il ne se contente pas d'offrir une généalogie de la prison moderne, mais analyse les systèmes disciplinaires à l'oeuvre dans d'autres institutions. Les études que nous reproduisons dans cette rubrique incitent à une réflexion sur la dimension coercitive de certains dispositifs d'assistance et de soins. Non de manière statique, car les oeuvres, les institutions évolue...

  18. Etude du mecanisme de predissociation de l'ion moleculaire de protoxyde d'azote par la mesure de l'energie cinetique des fragments de l'oxyde nitrique et de l'oxygene

    Science.gov (United States)

    Delisle, Claude

    La reaction N2 + O+ ↔ NO + + N, laquelle joue un role important dans la physique de la haute atmosphere, a ete le sujet de plusieurs etudes. Bien que cette reaction ait ete l'objet d'une quantite importante de travaux, ces derniers ne permettent toutefois pas de comprendre entierement le mecanisme d'un point de vue quantique, particulierement les niveaux d'energie excites des fragments qui permettent cette reaction. Puisque cette reaction n'est pas tres facile a reproduire en laboratoire, nous avons utilise la spectroscopie laser sur faisceaux d'ions rapides afin d'explorer les limites de dissociation de l'ion moleculaire intermediaire de cette reaction, a savoir l'ion N2O+. Le faisceau d'ions N2O+ rapides, apres excitation de l'ion moleculaire vers un niveau predissocie de l'etat A2Sigma+, se dissocie pour produire les fragments ioniques O+ et NO+. Par la mesure de la variation du nombre de fragments ioniques en fonction de l'energie cinetique des ions N2O+, nous avons enregistre les spectres de predissociation de l'ion N2O+. Lorsque c'etait possible, nous avons procede a l'analyse de ces spectres de dissociation afin d'en tirer les constantes moleculaires. Pour certaines des transitions rotationnelles intenses, nous avons mesure l'energie cinetique acquise par les fragments lors de la predissociation de l'ion N 2O+. Afin d'analyser les distributions en energie cinetique, nous avons developpe une simulation de l'experience en considerant, entre autres choses, la position des niveaux de vibration et de rotation des fragments diatomiques de chacune des limites de dissociation de N2O+. Les resultats de l'analyse sont exprimes en termes de population des niveaux de vibration des fragments diatomiques pour une distribution donnee de la population des niveaux de rotation des fragments. Les resultats ainsi obtenus, montrent que les fragments diatomiques sont produits dans des niveaux de vibration fortement excites. De tels niveaux d'excitation ne correspondent pas aux

  19. Het intermediair, verzekers van ondersteuning

    NARCIS (Netherlands)

    Greven, F.

    2007-01-01

    The goal of this research project was to develop an architecture to support the Dutch insurance agents by using ICT. In order to create this support an analysis of the insurance-market has been performed. Based on this analysis can be concluded that the insurance agents are losing ground to the dire

  20. Calculation of intermediate neutron flux in the radial reflectors of graphite reactors, comparison with experiments; Calcul du flux de neutrons intermediaires dans les reflecteurs lateraux des piles a graphite. Comparaison avec l'experience

    Energy Technology Data Exchange (ETDEWEB)

    Brisbois, J.; Vergnaud, T.; Oceraies, Y

    1967-12-01

    In a graphite pile, EDF or Inca type reactor, it is necessary to know the value of the intermediate neutron flux at the output of the lateral reflector in order to determine more precisely the neutron flux at the level of ionisation chambers. A sub critical pile of graphite and natural uranium was built, allowing to reconstitute the geometry of the radiation sources and the disposition of inferior and lateral protections of these piles. This pile is supplied with thermal neutrons coming from the Nereide light water type reactor. Some measurements of intermediate neutron flux have been made in this pile in order to establish a formalism for neutron flux calculation in slowing down in a whole core-lateral reflector, from the distribution of the thermal neutrons flux in the core. The flux calculation is done by age theory in three dimensions, in two homogenous media, separated by an axially semi infinite and laterally finite plane. One of these media includes a distribution of source. The constants are modified in order to take into account the presence of empty channels in the stacking. These calculations are done by the Malaga code. The checking of the formalism has been made in a greater complex geometry of these reactors that introduces an uncertainty factor in the comparison of results. We can however tell that we estimate correctly the variation of the intermediate neutrons flux in the core as well as its descending in a holed lateral reflector. The ratio between the calculation and the experiment is inferior to 2 or 3. Most of the time to a factor 2. [French] Dans une pile a graphite, du type EdF ou Inca, il est necessaire de connaitre la valeur du flux de neutrons intermediaires a la sortie du reflecteur lateral, afin de determiner avec plus de precision le flux de neutrons au niveau des chambres d'ionisation. Il a ete construit un empilement sous-critique, graphite uranium naturel, qui permet de reconstituer la geometrie des sources de rayonnement et la

  1. The Paris-Nairobi climate initiative. Access to clean energy for all in Africa and countries vulnerable to climate change. Access to energy, sustainable development and climate change; Initiative climat Paris-Nairobi. Acces aux energies propres en Afrique et dans les pays vulnerables au changement climatique. Livre-Blanc, Acces a l'energie, developpement durable et changements climatiques

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2011-04-21

    The first part of this report highlights the importance of a universal access to energy, the role of public policies and renewable energies, the need to implement sustainable economic models for energy services, and indicates the major objectives and essential actions for these purposes. The second part outlines the weakness of electricity production in Africa, the degradation of the energy mix balance, the vulnerability to climate change, and the fact that Africa, like other countries vulnerable to climate change, possess huge and unexploited renewable energy resources (biomass, hydroelectricity, geothermal, solar, wind). The third part proposes an approach to energy services by developing sustainable cooking, supplying energy to support rural development and to poles of economic growth, by developing sustainable cities (notably in transports and buildings), and by developing national and regional electricity grids. The last part addresses the issue of energy financing in developing countries

  2. To break away from fossil fuels : a contribution to solve climatic change and energy security for Quebec; S'affranchir des carburants fossiles : une contribution a la lutte aux changements climatiques et a la securite energetique du Quebec

    Energy Technology Data Exchange (ETDEWEB)

    Bonin, P.; Seguin, H.; Waridel, L.

    2006-06-15

    In response to growing energy demands, Quebec has proposed the construction of 3 deep water terminals to accommodate methane tankers which transport liquefied natural gas (LNG). This paper focused on the proposed Gros Cacouna Port project in the St. Lawrence Seaway which is currently under study and subject to approval. Equiterre, questioned the energy security aspect of the proposal and argued that increasing Quebec's reliance on increasingly expensive energy would decrease energy security. In addition, importation of LNG would bring a clear exit of capital outside the province. Equiterre also argued that reliance on fossil fuels should be decreased in order to mitigate greenhouse gas emissions which contribute to climate change. The organization questioned whether the economic and social need for the proposed project justifies a greater dependency on fossil fuels and the associated impact on the environment and fragile ecosystems of the St. Lawrence. It was suggested that alternative solutions such as renewable energy sources and energy efficiency should be explored in order to promote sustainable development, increase energy security and reduce greenhouse gases. Equiterre argued that Quebec can and must decrease, and even eliminate, its dependence on fossil fuels, including natural gas, for Quebec's economic, social and environmental well-being. For these reasons, Equiterre recommended that the proposed project be rejected, particularly since the project proponents failed to show the real impact that the project would have on Quebec markets. 72 refs., 10 tabs., 21 figs.

  3. Chapitre III. La descente aux enfers

    OpenAIRE

    2014-01-01

    Descendons maintenant, au propre et au figuré, dans cet univers transitoire qui sépare la liberté des chaînes et le soleil des ombres, ce lieu redoutable où se brisent les âmes ou les vies, descendons à la maison des morts, où nous attend la vision, augmentée par une simplification caricaturale, des vices et des faiblesses d’une société et de ses hommes. III.1. LES LIEUX ET LA ROUTINE Et d’abord, fixons-en le triste décor. Il est changeant, assujetti aux vicissitudes financières de l’Inquisit...

  4. Report on behalf of the Economic Affairs and Plan Commission on the law project relative to the energy markets; Rapport au nom de la commission des affaires economiques et du plan sur le projet de loi relatif aux marches energetiques

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2002-10-01

    In the framework of the directive no. 98/30 concerning the common rules for the natural gas internal market, the Senate debates on the law project relative to the energy markets no. 406, adopted by the Minister Council the 25 september 2002. This project transposes the directive content in french law. This document presents the amendments allowing the directive transposition. (A.L.B.)

  5. Electric power quality analysis methods. Application to voltage dips and harmonic disturbances; Methodes d'analyse de la qualite de l'energie electrique. Application aux creux de tension et a la pollution harmonique

    Energy Technology Data Exchange (ETDEWEB)

    Vanya, Ignatova

    2006-10-15

    The power quality concerns all the actors in the energy domains, that they are network administrators, suppliers, producers, or consumers of electricity. The research work presented in this PhD thesis is situated in the field of the power quality monitoring. Its objective is to introduce new techniques for analysis of power quality problems. There are different methods designed for the analysis of the power quality disturbances. This method reaches very good performances in the voltage dips analysis, as it allows segmenting, classifying and characterising these power quality disturbances. The periodic systems method allows the theoretical study of the generation and the propagation of harmonic disturbances in the network. Finally, the statistical matrix method has the objective to represent statistically electrical signals without loss of important information. (author)

  6. Ruling of 15 April 1999 regarding the technical conditions of junction of the autonomous electric energy production installations to the HTA and BT public networks not connected to a large interconnected network; Arrete du 15 avril 1999 relatif aux conditions techniques de raccordement des installations de production autonome d'energie electrique aux reseaux publics HTA et BT non relies a un grand reseau interconnecte

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-06-15

    The document issued by the State Secretariat for Industry, concerning the technical conditions of junction of the autonomous electric energy production installations to the HTA and BT public networks not connected to a large interconnected network, takes into account the directive no.98/34/CE of European Parliament and Council of 22 June 1998, the notification no.98/0477/F, as well as a number of laws, decrees and rulings concerning the energy distribution and supply. The present ruling contains five articles stipulating the conditions of junction to the public networks. An appendix is given, regarding the junction to HTA and BT networks. It contains the following seven sections: 1. Field of application; 2. Administration in case of normal and perturbed regime; 3. Functioning of the signal transmission (175 Hz or another close frequency); 4. Decoupling protections; 5. Network management and control; 6. Participation in primary frequency tuning; 7. Participation in the local voltage setting. Also two informative appendices are given. The first one presents the characteristics of insular networks in Guadeloupe and the neighbouring islands, Martinique, Reunion, Guiana and Corsica. The second informative appendix gives the information necessary to be provided in the frame of network management and control. A table presents the information to be supplied to the power station and the control center, respectively, according to the section five of the first appendix.

  7. La formation à distance aux États-Unis

    OpenAIRE

    Perley, Jim

    2013-01-01

    L’université, garante de la qualité académique et pédagogique des enseignements supérieurs se trouve confrontée aux conséquences du développement des TIC, vecteurs d’une plus large information, outils modernes au service de la formation mais aussi sources de profits par l’arrivée de cours en ligne. Aux États-Unis, une association d’universitaires part en guerre… pour la qualité. Universities as guarantors of academic and educational quality in higher education are confronted with the conse...

  8. Periodicity, Electronic Structures, and Bonding of Gold Tetrahalides [AuX4](-) (X = F, CI, Br, I, At, Uus)

    Energy Technology Data Exchange (ETDEWEB)

    Li, Wan-Lu; Li, Yong; Xu, Congqiao; Wang, Xue B.; Vorpagel, Erich R.; Li, Jun

    2015-12-07

    Systematic theoretical and experimental investigations have been performed to understand the periodicity and electronic structures of trivalent-gold halides using gold tetrahalides [AuX4]⁻ anions (X = F, Cl, Br, I, At, Uus). The [AuX4]⁻ (X = Cl, Br, I) anions were produced in gas phase and their negative-ion photoelectron spectra were obtained, which exhibited rich and well-resolved spectral peaks. We calculated the adiabatic as well as vertical electron detachment energies using density functional methods with scalar and spin-orbit coupling relativistic effects. The simulated photoelectron spectra based on these calculations are in good agreement with the experimental spectra. Our results show that the trivalent Au(III) oxidation state becomes progressively less stable while Au(I) is preferred when the halides become heavier along the Period Table. This trend reveals that the oxidation state of metals in complexes can be manipulated through ligand design

  9. Opinion of Energie-Cites on: Proposals for a directive of the European Parliament and of the Council; Avis d'Energie-Cites sur la: proposition de directive du parlement europeen et du conseil relative a l'efficacite energetique dans les utilisations finales et aux services energetiques

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2003-12-01

    The Proposal for a Directive on energy end-use efficiency and energy services, published in December 2003, is intended to develop and encourage energy efficiency on the demand side, in particular that provided by utilities and related services companies in the form of energy services, since promoting energy services is an important element for reducing greenhouse gas emissions. This proposal, focusing on the promotion of end-use efficiency, should be regarded as a necessary instrument to complement the recently adopted legislation on the opening of the internal energy market, which mainly leads to efficiency improvements on the supply side. (A.L.B.)

  10. Armand Mattelard et Erik Neveu. Introduction aux Cultural Studies.

    Directory of Open Access Journals (Sweden)

    Michel Imbert

    2006-04-01

    Full Text Available Cet ouvrage retrace en cinq chapitres la génèse et le développement d’un courant de recherche jusqu’à un certain point méconnu en France. Dans les années 60, l’école de Birmingham (Centre for Contemporary Cultural Studies a élargi la notion de culture au sens noble du terme en accordant aux styles de vie de la classe ouvrière et aux médias l’attention jusque là réservée à la culture des lettrés.Le premier chapitre évoque les travaux des pères fondateurs : le retentissement profond de l’ouvra...

  11. Opinion of Energie-Cites on: proposal for a directive of the European parliament and of the council; Avis d'Energie-Cites sur la: proposition de directive du parlement Europeen et du conseil relative a l'efficacite energetique dans les utilisations finales et aux services energetiques

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2003-12-01

    This proposal, focusing on the promotion of end-use efficiency, should be regarded as a necessary instrument to complement the recently adopted legislation on the opening of the internal energy market, which mainly leads to efficiency improvements on the supply side. Memorandum Considering that the functioning of the energy market does not allow ''market forces to allocate economic and natural resources effectively'' and that measures should be taken to improve this, the Commission draws up a list of the main obstacles and presents objectives. The technical potential for savings is at about 40%. The economic cost-effective savings potential is at about 20%, 22% in the buildings sector. The general target is 1 % savings per year. The 1,5 % target in the public sector is therefore more ambitious that the general target. According to the Commission, energy efficiency is a strategy to deal with scarce public funds while at the same time addressing serious energy and climate challenges, using the concept of leadership by example. It presents also the economic impact of energy savings targets and explains the reasons why the local authorities are affected by the proposed directive (Municipalities are energy consumers, the municipalities are energy distributors and/or retailers, the municipalities are planners/investors, the municipalities are motivators and local growth and employment are of concern to local authorities). (A.L.B.)

  12. Report of the working group on the rationalization and simplification of the procedures applicable to power producers that use renewable energy sources; Rapport du groupe de travail sur la rationalisation et la simplification des procedures applicables aux producteurs d'electricite a partir de sources d'energie renouvelables

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2002-04-01

    After a recall of the general context of development of renewable energy sources in France, this report draws up an inventory of the procedures which concern the facilities that use renewable energy sources. Then, it examines the different criticisms that have been expressed about these procedures and about their modalities of enforcement. This analysis leads to a set of proposals which aims at restoring the expected legibility of the procedures with respect the operators of these facilities and at ensuring the necessary transparency and exemplariness with respect to the environment. (J.S.)

  13. Neutron cross section evaluations of europium isotopes in 1 keV - 30 MeV energy range. Format - validation - comparison; Evaluation de sections efficaces pour des neutrons incidents sur des isotopes d'europium aux energies 1 keV - 30 MeV. Format - validation - comparaison

    Energy Technology Data Exchange (ETDEWEB)

    Dossantos-Uzarralde, P.; Le Luel, C.; Bauge, E. [CEA Bruyeres le Chatel, 91 (France). Dept. de Physique Theorique et Appliquee

    2004-07-01

    This paper presents neutron cross section evaluations of Europium isotopes. The cross sections are evaluated in 1 keV - 30 MeV energy range for the isotopes {sup 146}Eu, {sup 147}Eu, {sup 148}Eu, {sup 149}Eu, {sup 150}Eu, {sup 151}Eu, {sup 152}Eu, {sup 153}Eu, {sup 154}Eu in their ground state. This evaluation includes cross section productions of the long life isomeric states. Special attention is put on the options used for the description of the files written in ENDF-6 format. The final issue is a proposal of a new breed of ENDF-6 formatted neutron activation file. (authors)

  14. OVER- EXPRESSION OF AN AUX1 HOMOLOG TRIGGERS OVARY INITIATION IN VITRO OF POPULUS TOMENTOSA CARR.

    Institute of Scientific and Technical Information of China (English)

    2007-01-01

    PtAUX1, an ortholog of Arabidopsis AtAUX1 ( encoding auxin influx carrier protein), has been cloned from Populus tomentosa. PtAUX1 protein is similar to Arabidopsis AtAUX1 in structure, but PtAUX1 contains an additional cAMP/cGMP - dependent protein kinase phosphorylation site. Its overexpression lines driven by 35S promoter exhibits a novel phenotype related flower development which has not been revealed in AtAUX1 mutants. Ovary - like structures each with 1 ~ 2 styles, but without a cup - like disc and a bract, can initial from regenerated transgenic bud in cluster,resembling an inflorescence. The histological dissections illuminate that the ovary - like structures have womb and transmitting tissue inner its styles, but no ovules. PtAUX1 expression pattern are ubiquitous and various in different organs,which is coincident with its candidate auxin influx, functioning in distributing auxin thorough a plant body. These results suggest that PtAUX1 or polar auxin transport has a substantial function in floral organ initiation.

  15. Neutron dosimetry using proportional counters with tissue equivalent walls; Dosimetrie des neutrons au moyen de compteurs proportionnels a paroi equivalente aux tissus

    Energy Technology Data Exchange (ETDEWEB)

    Kerviller, H. de [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1965-07-01

    The author reminds the calculation method of the neutron absorbed dose in a material and deduce of it the conditions what this material have to fill to be equivalent to biological tissues. Various proportional counters are mode with walls in new tissue equivalent material and filled with various gases. The multiplication factor and neutron energy response of these counters are investigated and compared with those obtained with ethylene lined polyethylene counters. The conditions of working of such proportional counters for neutron dosimetry in energy range 10{sup -2} to 15 MeV are specified. (author) [French] L'auteur rappelle la methode de calcul de la dose absorbee due aux neutrons dans un materiau et en deduit les conditions que dolt remplir ce materiau pour titre equivalent aux tissus biologiques. Divers compteurs proportionnels sont realises avec des parois en nouveau materiau equivalent aux tissus et remplis de divers gaz. Les coefficients de multiplication et la reponse en fonction de l'energie des neutrons sont etudies et compares avec ceux de compteurs a paroi de polyethylene et remplis d'ethylene, Les conditions de fonctionnement de tels compteurs proportionnels pour la dosimetrie des neutrons d'energie 10{sup -2} a 15 MeV sont precisees. (auteur)

  16. Poweo 1. quarter 2007 revenue up 7% at 85 million euro. Energy supply to end-customers up 137%; Poweo chiffre d'affaires de 85 millions euro au 1. trimestre 2007, en hausse de 7%. Fourniture d'energie aux clients finaux en hausse de 137%

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2007-05-15

    POWEO, the leading independent electricity and gas operator in France, presents in this document its key business indicators for the first quarter of 2007. For the first time since its creation, POWEO achieved a quarterly sales turnover in excess of 100 million euro excluding the Energy Management activity. The implementation of commercial resources dedicated to the acquisition of large accounts in industry and services indeed enabled the Group to develop significantly the sales on this segment, in particular to a French large industrial group. POWEO intends to materialize in the coming months some opportunities with large accounts thanks to the implementation of the transitory regulated adjustment to market tariff (TARTAM), as decided by the government last fall 2006 and recently further defined. The professional customers segment started gradually to grow again. Before the launch of the residential offering, the acquisition of new professional customers during the past quarter compensated for usual erosion. The number of active sites customers amounts to 80.500 as at March 31, 2007, overall stable compared to the end of 2006. The electricity customer base represents 75.000 active sites as at March 31, 2007, the gas customer base further grew to reach 5.500 active sites at March 31, 2007. In addition, the commercial partners network has been streamlined in order to preserve only a reduced number of them, in view of the forthcoming launch of a new web site which will enable to market directly to the professional and residential customers POWEO's offering in energy and services. Within the framework of the capacity swap with EDF announced on January 3, 2007, part of the forward procurement contracts and call options initially dedicated to supply the end-customers had been re-classified in the Energy Management portfolio as of December 31, 2006. According to IFRS standards, this portfolio must be valued at market prices. The energy sector faced during the first

  17. Poweo 1. quarter 2007 revenue up 7% at 85 million euro. Energy supply to end-customers up 137%; Poweo chiffre d'affaires de 85 millions euro au 1. trimestre 2007, en hausse de 7%. Fourniture d'energie aux clients finaux en hausse de 137%

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2007-05-15

    POWEO, the leading independent electricity and gas operator in France, presents in this document its key business indicators for the first quarter of 2007. For the first time since its creation, POWEO achieved a quarterly sales turnover in excess of 100 million euro excluding the Energy Management activity. The implementation of commercial resources dedicated to the acquisition of large accounts in industry and services indeed enabled the Group to develop significantly the sales on this segment, in particular to a French large industrial group. POWEO intends to materialize in the coming months some opportunities with large accounts thanks to the implementation of the transitory regulated adjustment to market tariff (TARTAM), as decided by the government last fall 2006 and recently further defined. The professional customers segment started gradually to grow again. Before the launch of the residential offering, the acquisition of new professional customers during the past quarter compensated for usual erosion. The number of active sites customers amounts to 80.500 as at March 31, 2007, overall stable compared to the end of 2006. The electricity customer base represents 75.000 active sites as at March 31, 2007, the gas customer base further grew to reach 5.500 active sites at March 31, 2007. In addition, the commercial partners network has been streamlined in order to preserve only a reduced number of them, in view of the forthcoming launch of a new web site which will enable to market directly to the professional and residential customers POWEO's offering in energy and services. Within the framework of the capacity swap with EDF announced on January 3, 2007, part of the forward procurement contracts and call options initially dedicated to supply the end-customers had been re-classified in the Energy Management portfolio as of December 31, 2006. According to IFRS standards, this portfolio must be valued at market prices. The energy sector faced during the first

  18. Methods of selection in heavy ion collisions at Fermi energies and de-excitation modes with the INDRA multi-detector; Methodes de tri dans les collisions d'ions lourds aux energies de Fermi et modes de desexcitation avec le multidetecteur INDRA

    Energy Technology Data Exchange (ETDEWEB)

    Lautesse, Ph

    2005-11-15

    The progress made in particle detection, particularly the design of multi-detectors, like INDRA, that cover a solid angle of almost 4{pi}, have given a new impetus to heavy ion collisions. These detectors are demanding for an efficient way of selecting events that have a common history or similar features, for instance the events representing the de-excitation of a unique emitter. The problem is to find the adequate variable on which the discrimination can be based. Different methods are proposed in this work, the common point is that they require efficient models to reproduce and analyse experimental data in order to apprehend the equation of state of nuclear matter. Most of these models are based on the numerically solving of the nuclear Boltzmann equation. The application to the Ni + Ni reaction with an energy ranging from a few A.MeV to more than 50 A.MeV illustrates this work. (A.C.)

  19. Study of the sensibility of the Antares neutrino telescope to very high energy photons: Contribution to the time calibration of the detector; Etude de la sensibilite du telescope a neutrinos Antares aux photons de tres haute energie: Contribution a l'etalonnage en temps du detecteur

    Energy Technology Data Exchange (ETDEWEB)

    Guillard, G.

    2010-10-15

    From the sea-floor, the 900-odd photomultiplier tubes of the Antares neutrino telescope scrutinize the abysses attempting to discern, amid bioluminescence and marine radioactivity, Cerenkov photons emitted by muons from astrophysical neutrinos, and to distinguish these muons from those generated by air showers produced by cosmic rays. Antares has been collecting data since 2006; this feat of engineering has paved the way for submarine neutrino astronomy: Antares is expected to be the forerunner of a larger instrument, KM3NeT. Telescope's performance is characterized in part by its angular resolution. In the case of Antares, the angular resolution is directly related to the time resolution of the detector's elements. This manuscript presents a correction for one of the main sources of deterioration of this time resolution, the walk effect induced by the set up of a fixed threshold for triggering the photomultiplier tubes signal. This correction, implemented in the official software chain of the Antares collaboration, improves in particular the events reconstruction quality estimator. This implementation allows further optimizations. The author also attempts to evaluate, using a complete Monte-Carlo simulation, the possibility of using very high energy photon sources as calibrated muon beams in order to estimate the absolute pointing and the angular resolution of the telescope. Although limited by large uncertainties, it is demonstrated that the possibility to detect such sources is extremely small. In addition, it is shown that the atmospheric neutrino background induced by very high-energy photons is negligible. (author)

  20. Possibility of observing high energy neutrinos from gamma bursts, with the Antanares telescope, feasibility study; Possibilite d'observation, par le telescope antares, de neutrinos de haute energie associes aux sursauts gamma et validation des techniques de detection a l'aide d'un prototype

    Energy Technology Data Exchange (ETDEWEB)

    Kouchner, A

    2001-04-01

    The European Antares collaboration intends to build a deep-sea neutrino telescope with a detection surface of about 1/10 km{sup 2} in the Mediterranean sea. The universe is transparent to neutrinos, so their study provides a unique means of improving our knowledge of the nature and origin of cosmic rays and their emission from the most powerful astrophysical sources in the cosmos. Neutrinos also offer the possibility of opening a new energy window (E>TeV) for observation of the universe. The first part of the thesis is dedicated to a study of the possibility of using the future telescope to look for correlations between gamma-ray bursts and high-energy neutrinos. It is based, on one hand, on the predictions of neutrino fluxes from gamma-ray bursts in the framework of the theoretical model of 'fireballs', and, on the other hand, on the temporal properties of the gamma-ray bursts in the 4. BATSE catalogue. The second part of the thesis presents the results obtained with a prototype detector line deployed, at the end of 1999, some forty km south-west off Marseilles. The objective was to operate a complete apparatus, similar to the future detector lines, from the shore, and under realistic conditions. Data from 7 photomultiplier tubes disposed along the detector line were transmitted through 37 km of optical fiber to the shore, where they were used to reconstruct tracks due to atmospheric muons, thus validating the detection principles and methods. (author)

  1. Shakespeare Cliff, rempart symbolique aux portes du royaume

    Directory of Open Access Journals (Sweden)

    Jeremy Price

    2006-02-01

    Full Text Available Figure 1 : Clarkson STANFIELD, Shakespeare Cliff, Dover, 1849, 1862« Il est une falaise, dont le front haut et courbeRegarde avec effroi dans l’abîme qu’elle enserre :Conduis-moi jusqu’à son bordEt je remédierai à la misère que tu souffresPar quelque riche objet ; de cet endroitJe n’aurai point besoin de guide. »Les lignes ci-dessus, tirées de l’Acte IV, Scène I du Roi Lear, font allusion aux falaises de Douvres, plus particulièrement à leur point culminant, un grand bloc de calcaire et de cr...

  2. Feticismo e desiderio in Poulet aux prunes di Marjane Satrapi

    Directory of Open Access Journals (Sweden)

    Stefania Rimini

    2013-05-01

    Full Text Available Il saggio si propone di individuare e descrivere le sfumature erotiche e sentimentali del film Poulet aux prunes di Marjane Satrapi, felice adattamento dell’omonima graphic novel. Il racconto procede per scarti, ellissi, anticipazioni e flasback, dando luogo a una narrazione labirintica dalla singolare trama arabescante. Le sottili dinamiche seduttive messe in campo dal complesso stile di regia di Satrapi-Paronnaud vengono analizzate alla luce delle categorie feticistiche individuate da Massimo Fusillo, che offrono interessanti modelli di interazione fra desiderio e creatività. L’esito di tale indagine consente di ampliare il dibattito relativo al rapporto di scambio e interferenza fra oggetti, pulsioni e sguardi nel cinema contemporaneo.

  3. Les aides financières aux étudiants

    OpenAIRE

    Delhaxhe, Arlette; Godenir, Anne; Deutsch, Laurent

    2013-01-01

    Élaboré à partir d'une étude intitulée Les aides financières aux étudiants dans l'Union européenne, tendance et débats, cet article permet d'appréhender les composantes multiples qui sont à prendre en considération dans ce domaine selon les pays de l'Union européenne observés. Outre les principes de base sur lesquels reposent les différents systèmes d'aides et leurs objectifs, une analyse des données qui imposent une évolution est présentée. This article, based on a study entitled Financia...

  4. Chemical and dynamics properties of heavy ion collisions at RHIC energies by the measurement of the production of the doubly strange baryons in the STAR experiment; Proprietes chimiques et dynamiques des collisions d'ions lourds aux energies du RHIC par la mesure de la production des baryons doublement etranges dans l'experience STAR

    Energy Technology Data Exchange (ETDEWEB)

    Estienne, M

    2005-04-15

    Lattice QCD calculations predict, at {mu}{sub B} {approx} 0, a crossover from ordinary hadronic matter to a Quark Gluon Plasma. Heavy ion collisions have been proposed to recreate it in the laboratory and to study its properties. The Au+Au, d+Au collisions at {radical}(S{sub NN}) = 200 GeV and the Au+Au ones at 62.4 GeV delivered at RHIC have been probed by the measurement of the {xi} particles in the STAR experiment. Their yield evolution with collision energy and system size gives size to the chemical properties of the reaction in the framework of hadronic and statistical models. The {xi} R{sub CP} shows: (1) a meson/baryon dependence for 2 < {sub pT} < 5 GeV/c well reproduced by quark coalescence and recombination models, (2) the formation of a dense matter signed by a R{sub CP} suppression at {sub pT} > 3 GeV/c, (3) strong interactions between constituents suggesting the existence of strong collectivity in the medium. The {xi} transverse flow seems to be interesting to probe the early stage the collision with presumably partonic degrees of freedom. (author)

  5. Contribution to global computation infrastructure: inter-platform delegation, integration of standard services and application to high-energy physics; Contribution aux infrastructures de calcul global: delegation inter plates-formes, integration de services standards et application a la physique des hautes energies

    Energy Technology Data Exchange (ETDEWEB)

    Lodygensky, Oleg [Laboratoire de Recherche en Informatique, Laboratoire de l' Accelerateur Lineaire, Bat. 200, 91898 Orsay Cedex (France)

    2006-07-01

    The generalization and implementation of the current information resources, particularly the large storing capacities and the networks allow conceiving new methods of work and ways of entertainment. Centralized stand-alone, monolithic computing stations have been gradually replaced by distributed client-tailored architectures which in turn are challenged by the new distributed systems called 'pair-by pair' systems. This migration is no longer with the specialists' realm but users of more modest skills get used with this new techniques for e-mailing commercial information and exchanging various sorts of files on a 'equal-to-equal' basis. Trade, industry and research as well make profits largely of the new technique called 'grid', this new technique of handling information at a global scale. The present work concerns the grid utilisation for computation. A synergy was created with Paris-Sud University at Orsay, between the Information Research Laboratory (LRI) and the Linear Accelerator Laboratory (LAL) in order to foster the works on grid infrastructure of high research interest for LRI and offering new working methods for LAL. The results of the work developed within this inter-disciplinary-collaboration are based on XtremWeb, the research and production platform for global computation elaborated at LRI. First one presents the current status of the large-scale distributed systems, their basic principles and user-oriented architecture. The XtremWeb is then described focusing the modifications which were effected upon both architecture and implementation in order to fulfill optimally the requirements imposed to such a platform. Then one presents studies with the platform allowing a generalization of the inter-grid resources and development of a user-oriented grid adapted to special services, as well,. Finally one presents the operation modes, the problems to solve and the advantages of this new platform for the high-energy research

  6. Monsieur Etienne Blanc Premier vice-président de la Région Auvergne-Rhône-Alpes Délégué aux finances, à l'administration générale, aux économies budgétaires et aux politiques transfrontalières

    CERN Multimedia

    Bennett, Sophia Elizabeth

    2017-01-01

    Monsieur Etienne Blanc Premier vice-président de la Région Auvergne-Rhône-Alpes Délégué aux finances, à l'administration générale, aux économies budgétaires et aux politiques transfrontalières

  7. OsAUX1 controls lateral root initiation in rice (Oryza sativa L.).

    Science.gov (United States)

    Zhao, Heming; Ma, Tengfei; Wang, Xin; Deng, Yingtian; Ma, Haoli; Zhang, Rongsheng; Zhao, Jie

    2015-11-01

    Polar auxin transport, mediated by influx and efflux transporters, controls many aspects of plant growth and development. The auxin influx carriers in Arabidopsis have been shown to control lateral root development and gravitropism, but little is known about these proteins in rice. This paper reports on the functional characterization of OsAUX1. Three OsAUX1 T-DNA insertion mutants and RNAi knockdown transgenic plants reduced lateral root initiation compared with wild-type (WT) plants. OsAUX1 overexpression plants exhibited increased lateral root initiation and OsAUX1 was highly expressed in lateral roots and lateral root primordia. Similarly, the auxin reporter, DR5-GUS, was expressed at lower levels in osaux1 than in the WT plants, which indicated that the auxin levels in the mutant roots had decreased. Exogenous 1-naphthylacetic acid (NAA) treatment rescued the defective phenotype in osaux1-1 plants, whereas indole-3-acetic acid (IAA) and 2,4-D could not, which suggested that OsAUX1 was a putative auxin influx carrier. The transcript levels of several auxin signalling genes and cell cycle genes significantly declined in osaux1, hinting that the regulatory role of OsAUX1 may be mediated by auxin signalling and cell cycle genes. Overall, our results indicated that OsAUX1 was involved in polar auxin transport and functioned to control auxin-mediated lateral root initiation in rice.

  8. Meels: municipalities and energy efficiency in a liberalized system. Guidelines for municipalities: adapting to new roles in a liberalized market; Meels: les municipalites et l'efficacite energetique dans un systeme liberalise. Recommandations detinees aux municipalites: comment peuvent-elles s'adapter a leurs nouveaux roles dans un marche liberalise?

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2003-07-01

    Even if the liberalization of energy markets seems to make it more difficult, it also creates opportunities for the committed local authority. Local authorities fulfill their functions in the energy sphere via a number of roles: as a consumer of energy, as a producer of energy, as a distributor of energy, as a trader of energy, as a regulator, planner and policy maker regarding energy using activities, as an awareness tool of the issues relating to energy use and as a provider of incentives to improve energy performance. There are impacts of liberalization on each of these roles. In most, liberalization has not actually changed what they do, only the degree of attention that should be given to it. Only in those areas where trading is involved are new skills necessary, for instance in purchasing energy, in transporting one own energy and in trading energy. In this framework, the following topics are successively analyzed: Improving performance as an energy consumer, improving performance as an energy producer, improving performance as an energy trader, improving performance as an energy distributor, improving performance in delivering sustainable, energy policies at local level and improving performance as a facilitator and awareness programs. (A.L.B.)

  9. Activation analysis using {gamma} photons; Analyse par activation aux photons {gamma}

    Energy Technology Data Exchange (ETDEWEB)

    Engelmann, Ch. [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1967-07-01

    This report summarizes all the data required for using photonuclear reactions in the field of analysis. After a brief review of the elementary properties of nuclear reactions induced by photon irradiation, the main characteristics are given of high energy (E > 20 MeV) Bremsstrahlung sources. The principle of activation analysis based on the use of photons is given. Actual examples of the analytic possibilities are described in detail, in particular in the case of the determination of very small quantities (< 10{sup -6}) of C, N, O and F. The influence of interfering nuclear reactions is discussed. (author) [French] Ce rapport se propose de resumer l'ensemble des connaissances indispensables pour l'utilisation des reactions photonucleaires a des fins analytiques. Apres quelques rappels concernant les proprietes elementaires des reactions nucleaires induites par irradiation dans les photons, les principales caracteristiques des sources de rayonnement de freinage de haute energie (E > 20 MeV)| sont donnees. Le principe de l'analyse par activation aux photons est rappele. Des exemples concrets sur les possibilites analytiques sont developpes, particulierement en ce qui concerne la determination de quantites tres faibles (< 10{sup -6}) de C, N, O et F. L'influence des reactions nucleaires parasites est discutee. (auteur)

  10. The identification and characterization of specific ARF-Aux/IAA regulatory modules in plant growth and development.

    Science.gov (United States)

    Krogan, Naden T; Berleth, Thomas

    2015-01-01

    The current model of auxin-inducible transcription describes numerous regulatory interactions between AUXIN RESPONSE FACTORs (ARFs) and Aux/IAAs. However, specific relationships between individual members of these families in planta remain largely uncharacterized. Using a systems biology approach, the entire suite of Aux/IAA genes directly regulated by the developmentally pivotal ARF MONOPTEROS (MP) was recently determined for multiple Arabidopsis tissue types. This study showed that MP directly targets distinct subclades of Aux/IAAs, revealing potential regulatory modules of redundantly acting Aux/IAAs involved in MP-dependent processes. Further, functional analyses indicated that the protein products of these targeted Aux/IAAs negatively feedback on MP. Thus, comprehensive identification of Aux/IAAs targeted by individual ARFs will generate biologically meaningful networks of ARF-Aux/IAA regulatory modules controlling distinct plant pathways.

  11. The reference energy scenario of the DGEMP for 2030,there's many a slip twixt the cup and the lip; Le scenario energetique de reference de la DGEMP pour 2030, ou il y a loin de la coupe aux levres

    Energy Technology Data Exchange (ETDEWEB)

    Acket, C.; Nifenecker, H

    2008-05-15

    The authors discuss the energy reference scenario for 2030, proposed by the DGEMP. This scenario is published every 4 years. It represents the french energy situation in 2030, if no new energy policy was decided, in particularly no new measure from the Grenelle of the environment. The scenario supposes also no energy crisis in the fossil fuels supply and the fuels prices. In this topic, the objective of a contribution of 20% of renewable energies in the final energy consumption, seems possible. (A.L.B.)

  12. No 3017. Resolution proposal aiming at creating an inquiry commission relative to the project of merger between Gaz de France and Suez, to the conditions of its preparation and announcement and to the consequences of Gaz de France privatization on users and on the energy market balance; N. 3017. Proposition de resolution tendant a la creation d'une commission d'enquete relative au projet de fusion entre Gaz de France et Suez, aux conditions de sa preparation et de son annonce et aux consequences de la privatisation de Gaz de France pour les usagers et l'equilibre du marche de l'energie

    Energy Technology Data Exchange (ETDEWEB)

    Balligand, J.P.; Ayrault, J.M.; Hollande, F.; Besson, E.; Migaud, D.; Emmanuelli, H.; Brottes, F.; Bataille, Ch.; Ducout, P.; Gaubert, J.; Habib, D

    2006-04-15

    On February 25, 2006, the French government took the decision of merging together Gaz de France and Suez energy companies as an answer to Enel's project of takeover bid on Suez. This document wonders about: the real motivations of Gaz de France (the French gas utility) privatization, the possible intervention of public authorities in Enel and Veolia companies project of controlling the Suez group, the governing way of the share-holding government and the preservation of its industrial interests, and the consequences for consumers. Therefore, the creation of a parliamentary inquiry commission is requested to shade light on these different points and to give notice of any bad practices in this affair. (J.S.)

  13. Aux limites de la physique les paradoxes quantiques

    CERN Document Server

    Rothen, François

    2012-01-01

    Dans l’esprit des pères fondateurs de la science moderne, les phénomènes matériels se déroulent selon un schéma unique. La cause précède nécessairement l’effet, et la connaissance de l’effet permet de remonter à la cause. Sur la scène de la nature, le hasard n’occupe qu’une place congrue. On ne fait appel à lui que pour pallier notre ignorance. Dans les années 1920, la révolution quantique bouleverse ce cadre rigide. Elle accorde une place de choix au hasard, si malmené jusqu’alors, puis elle met en scène une constellation de phénomènes inexplicables aux yeux de la science dite classique. Après une courte introduction historique, l’auteur met ses lecteurs au contact de certains de ces phénomènes si contraires à l’intuition. Refusant l’aide du langage mathématique, il les convie à pénétrer dans un monde quantique qui déconcerte le novice avant de l’éblouir par sa nouveauté et sa cohérence. Un accent particulier est mis sur une application nouvelle de la physiqu...

  14. Introduction aux études sur le genre. - 2e éd. revue et augm.

    NARCIS (Netherlands)

    Bereni, L.; Chauvin, S.; Jaunait, A.; Revillard, A.

    2012-01-01

    Pourquoi offre-t-on des poupées aux filles et des voitures aux garçons ? Pourquoi les femmes gagnent-elles moins que les hommes ? Comment expliquer qu’elles effectuent les deux tiers du travail domestique ? Pourquoi est-ce si mal vu pour un homme d’être efféminé ? Le pouvoir est-il intrinsèquement m

  15. Des tables pascales aux tables astronomiques et retour.

    Directory of Open Access Journals (Sweden)

    Max Lejbowicz

    2006-05-01

    Full Text Available L’article étudie la naissance et le développement du calendrier ecclésiastique chrétien, i. e. le comput, depuis les premiers témoignages de la célébration annuelle de la résurrection de Jésus jusqu’aux traductions des tables astronomiques arabes au xiie siècle. Il privilégie les procédures qui aboutissent à la détermination des dates pascales et à leur mise en forme tabulaire. Les analyses sont conduites à partir d’un double point de vue. L’un est scientifique. Il s’appuie sur les données astronomiques retenues par Ptolémée et sur l’apport de la tradition mathématique grecque au calcul par approximations. Les cycles soli-lunaires sont posés à partir des fractions continues et le cycle soli-hebdomadaire à partir du plus petit commun multiple. Le second point de vue est social : l’unification du comput participe à celle de la chrétienté comprise comme une configuration politico-religieuse. Deux conclusions s’imposent. Quelle que soit l’importance que la civilisation médiévale a attribuée au comput, il reste que : 1 / les Pâques sont porteuses de significations irréductibles aux techniques chronométriques qui inscrivent cette fête dans le déroulement de l’année ; 2 / ces techniques ont toutefois marqué profondément les curiosités intellectuelles des Latins et les ont préparé à accueillir avec ferveur les zīj et la numération de position.The article studies the birth and development of the Christian ecclesiastical calendar, i.e. the computus, from the first witnesses to the yearly celebration of the resurrection of Jesus to the translations of arabic astronomical tables in the 12th century. It focuses on the procedures which resulted in determinig the dates of Easter and their being put into tabular form. These analyses were undertaken from two perspectives. One was scientific, relying on the astronomical data preserved by Ptolemy and on the contribution of the Greek mathematical

  16. Réactions aux interfaces de bicristaux compatibles et incompatibles

    Science.gov (United States)

    Taisne, A.; Décamps, B.; Priester, L.

    2003-03-01

    La rupture intergranulaire peut apparaître suite à la non accommodation des contraintes au voisinage de l'interface. La transmission du glissement au travers d'une interface est un des modes de relaxation possible qui dépend des paramètres suivants : facteurs géométriques (caractéristiques de l'interface et systèmes de glissement activés), constantes élastiques de chacune des phases. Dans cette étude, la microscopie électronique à transmission (MET) est utilisée pour analyser les configurations de dislocations résultant d'une déformation par fatigue de bicristaux d'acier austénoferritique de désorientations contrôlées. Deux types de bicristaux sont étudiés, compatible et incompatible plastiquement. Pour chacun d'eux, la déformation est initiée soit dans la phase ferritique α soit dans la phase austénitique γ selon la localisation d'une entaille préalable à l'essai mécanique. Les résultats permettent de remonter aux mécanismes élémentaires qui régissent le transfert “direct” ou “indirect” des dislocations à travers l'interface. Une corrélation avec le comportement des bicristaux à l'échelle macroscopique est également tentée.

  17. Gestion des ressources hydriques adaptee aux changements climatiques pour la production optimale d'hydroelectricite. Etude de cas: Bassin versant de la riviere Manicouagan

    Science.gov (United States)

    Haguma, Didier

    Il est dorenavant etabli que les changements climatiques auront des repercussions sur les ressources en eau. La situation est preoccupante pour le secteur de production d'energie hydroelectrique, car l'eau constitue le moteur pour generer cette forme d'energie. Il sera important d'adapter les regles de gestion et/ou les installations des systemes hydriques, afin de minimiser les impacts negatifs et/ou pour capitaliser sur les retombees positives que les changements climatiques pourront apporter. Les travaux de la presente recherche s'interessent au developpement d'une methode de gestion des systemes hydriques qui tient compte des projections climatiques pour mieux anticiper les impacts de l'evolution du climat sur la production d'hydroelectricite et d'etablir des strategies d'adaptation aux changements climatiques. Le domaine d'etude est le bassin versant de la riviere Manicouagan situe dans la partie centrale du Quebec. Une nouvelle approche d'optimisation des ressources hydriques dans le contexte des changements climatiques est proposee. L'approche traite le probleme de la saisonnalite et de la non-stationnarite du climat d'une maniere explicite pour representer l'incertitude rattachee a un ensemble des projections climatiques. Cette approche permet d'integrer les projections climatiques dans le probleme d'optimisation des ressources en eau pour une gestion a long terme des systemes hydriques et de developper des strategies d'adaptation de ces systemes aux changements climatiques. Les resultats montrent que les impacts des changements climatiques sur le regime hydrologique du bassin de la riviere Manicouagan seraient le devancement et l'attenuation de la crue printaniere et l'augmentation du volume annuel d'apports. L'adaptation des regles de gestion du systeme hydrique engendrerait une hausse de la production hydroelectrique. Neanmoins, une perte de la performance des installations existantes du systeme hydrique serait observee a cause de l'augmentation des

  18. Des usines à la campagne aux villes industrielles

    Directory of Open Access Journals (Sweden)

    Laure Bonnaud

    2005-06-01

    Full Text Available L’objet de cet article est de retracer sociologiquement l’histoire du droit des installations classées ou plutôt de la partie de ce droit qui concerne l’urbanisation autour des établissements dangereux et qui entend ainsi encadrer les relations entre la ville et l’industrie. Cette perspective permet d’envisager deux aspects complémentaires de cette question : d’une part, on examine le droit comme une façon de représenter un problème et notamment comment la place de la question urbaine y a été pensée et définie ; d’autre part, on s’intéresse aux règles juridiques comme des outils, des ressources de catégories, de concepts qui définissent des cadres pour l’action publique. Ainsi, l'histoire du droit des installations classées contribue à mettre en lumière la façon dont la gestion de la proximité ville/industrie articule en permanence (mais selon des modalités qui varient au fil du temps les dimensions sociales, économiques et environnementales qui permettent aujourd'hui d'appréhender et de définir le développement durable.The main aim of this paper is to relate the history of a part of the environmental French law, the one which govern the urban development in the vicinity of the dangerous chemical plants. From a sociological point of view, two aspects of this issue may be simultaneously analysed. In one hand, we examine the law as a way to represent the problem of cohabitation between urban area and industry: how this question has been successively thought out and defined? On the other hand, we take an interest in the juridical rules considered as tools, resources and concepts for public management. According to this approach, the history of this part of French law highlight how urban planning and risk management permanently link the social, economical and environmental dimensions of sustainability. But it shows also that those three factors play a part that vary from time to time.

  19. A velocity map imaging study of gold-rare gas complexes: Au-Ar, Au-Kr, and Au-Xe

    Science.gov (United States)

    Hopkins, W. Scott; Woodham, Alex P.; Plowright, Richard J.; Wright, Timothy G.; Mackenzie, Stuart R.

    2010-06-01

    The ultraviolet photodissociation dynamics of the gold-rare gas atom van der Waals complexes (Au-RG, RG=Ar, Kr, and Xe) have been studied by velocity map imaging. Photofragmentation of Au-Ar and Au-Kr at several wavelengths permits extrapolation to zero of the total kinetic energy release (TKER) spectra as monitored in the Au(P23/2∘[5d106p]) fragment channel, facilitating the determination of ground state dissociation energies of D0″(Au-Ar)=149±13 cm-1 and D0″(Au-Kr)=240±19 cm-1, respectively. In the same spectral region, transitions to vibrational levels of an Ω'=1/2 state of the Au-Xe complex result in predissociation to the lower Au(P21/2∘[5d106p])+Xe(S10[5p6]) fragment channel for which TKER extrapolation yields a value of D0″(Au-Xe)=636±27 cm-1. Asymmetric line shapes for transitions to the v'=14 level of this state indicate coupling to the Au(P23/2∘[5d106p])+Xe(S10[5p6]) continuum, which allows us to refine this value to D0″(Au-Xe)=607±5 cm-1. The dissociation dynamics of this vibrational level have been studied at the level of individual isotopologues by fitting the observed excitation spectra to Fano profiles. These fits reveal a remarkable variation in the predissociation dynamics for different Au-Xe isotopologues. For Au-Ar and Au-Xe, the determined ground state dissociation energies are in good agreement with recent theoretical calculations; the agreement of the Au-Kr value with theory is less satisfactory.

  20. Optimisation de forme et application à l'observation et au contrôle d'équations aux dérivées partielles

    OpenAIRE

    Privat, Yannick

    2014-01-01

    Les travaux pr\\'esent\\'es dans ce m\\'emoire portent sur l'analyse math\\'ematique de probl\\`emes \\`a la charni\\`ere de l'optimisation de forme et du contr\\^ole des \\'equations aux d\\'eriv\\'ees partielles.La premi\\`ere partie du manuscrit est consacr\\'ee \\`a l'\\'etude de deux probl\\`emes d'optimisation de forme en m\\'ecanique des fluides. Le premier trouve sa motivation dans la mod\\'elisation de l'arbre bronchique. On cherche \\`a minimiser l'\\'energie dissip\\'ee par un fluide newtonien incompre...

  1. Commissariat aux comptes : la fin inéluctable de l'exercice à titre accessoire

    OpenAIRE

    Mikol, Alain

    2006-01-01

    International audience; 25% des commissaires aux comptes inscrits à la Compagnie nationale des commissaires aux comptes (CNCC, France) n'ont aucun mandat et 25% ont moins de cinq mandats. Ces deux chiffres montrent qu'il y a un nombre très important d'inscrits qui exercent le commissariat de manière accessoire à leur métier principal, lequel est dans la quasi-totalité des cas celui d'expert-comptable. L'exercice accessoire des missions censoriales par des experts-comptables a de tout temps ex...

  2. Genome-Wide Analysis and Characterization of Aux/IAA Family Genes in Brassica rapa.

    Directory of Open Access Journals (Sweden)

    Parameswari Paul

    Full Text Available Auxins are the key players in plant growth development involving leaf formation, phototropism, root, fruit and embryo development. Auxin/Indole-3-Acetic Acid (Aux/IAA are early auxin response genes noted as transcriptional repressors in plant auxin signaling. However, many studies focus on Aux/ARF gene families and much less is known about the Aux/IAA gene family in Brassica rapa (B. rapa. Here we performed a comprehensive genome-wide analysis and identified 55 Aux/IAA genes in B. rapa using four conserved motifs of Aux/IAA family (PF02309. Chromosomal mapping of the B. rapa Aux/IAA (BrIAA genes facilitated understanding cluster rearrangement of the crucifer building blocks in the genome. Phylogenetic analysis of BrIAA with Arabidopsis thaliana, Oryza sativa and Zea mays identified 51 sister pairs including 15 same species (BrIAA-BrIAA and 36 cross species (BrIAA-AtIAA IAA genes. Among the 55 BrIAA genes, expression of 43 and 45 genes were verified using Genebank B. rapa ESTs and in home developed microarray data from mature leaves of Chiifu and RcBr lines. Despite their huge morphological difference, tissue specific expression analysis of BrIAA genes between the parental lines Chiifu and RcBr showed that the genes followed a similar pattern of expression during leaf development and a different pattern during bud, flower and siliqua development stages. The response of the BrIAA genes to abiotic and auxin stress at different time intervals revealed their involvement in stress response. Single Nucleotide Polymorphisms between IAA genes of reference genome Chiifu and RcBr were focused and identified. Our study examines the scope of conservation and divergence of Aux/IAA genes and their structures in B. rapa. Analyzing the expression and structural variation between two parental lines will significantly contribute to functional genomics of Brassica crops and we belive our study would provide a foundation in understanding the Aux/IAA genes in B. rapa.

  3. Report of transparency and nuclear safety 2007 CEA Fontenay aux Roses; Rapport transparence et securite nucleaire 2007 CEA Fontenay aux Roses

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2007-07-01

    This report presents the activities of the CEA Center of Fontenay aux roses for the year 2007. After many years of decommissioning and dismantling of nuclear installations, the Center is now devoted (since 2005) to the development of research programmes on biology and biomedical technologies. The actions concerning the safety, the radiation protection, the significant events, the release control and the environmental impacts and the wastes stored on the center are discussed. (A.L.B.)

  4. Monitoring the performance of Aux. Feedwater Pump using Smart Sensing Model

    Energy Technology Data Exchange (ETDEWEB)

    No, Young Gyu; Seong, Poong Hyun [Korea Advanced Institute of Science and Technology, Daejeon (Korea, Republic of)

    2015-10-15

    Many artificial intelligence (AI) techniques equipped with learning systems have recently been proposed to monitor sensors and components in NPPs. Therefore, the objective of this study is the development of an integrity evaluation method for safety critical components such as Aux. feedwater pump, high pressure safety injection (HPSI) pump, etc. using smart sensing models based on AI techniques. In this work, the smart sensing model is developed at first to predict the performance of Aux. feedwater pump by estimating flowrate using group method of data handing (GMDH) method. If the performance prediction is achieved by this feasibility study, the smart sensing model will be applied to development of the integrity evaluation method for safety critical components. Also, the proposed algorithm for the performance prediction is verified by comparison with the simulation data of the MARS code for station blackout (SBO) events. In this study, the smart sensing model for the prediction performance of Aux. feedwater pump has been developed. In order to develop the smart sensing model, the GMDH algorithm is employed. The GMDH algorithm is the way to find a function that can well express a dependent variable from independent variables. This method uses a data structure similar to that of multiple regression models. The proposed GMDH model can accurately predict the performance of Aux.

  5. Dodo remains from an in situ context from Mare aux Songes, Mauritius

    NARCIS (Netherlands)

    Meijer, H.J.M.; Gill, A.; de Louw, P.G.B.; van den Hoek Ostende, L.W.; Hume, J.P.; Rijsdijk, K.F.

    2012-01-01

    Since 2005, excavations at Mare aux Songes, Mauritius, have revealed the presence of a very rich, ∼4,200-year-old fossil bone bed including dodo (Raphus cucullatus) bones and bone fragments. The recently excavated dodo assemblage comprises at least 17 individuals and is characterised by the presence

  6. The carrier AUXIN RESISTANT (AUX1) dominates auxin flux into Arabidopsis protoplasts.

    Science.gov (United States)

    Rutschow, Heidi L; Baskin, Tobias I; Kramer, Eric M

    2014-11-01

    The ability of the plant hormone auxin to enter a cell is critical to auxin transport and signaling. Auxin can cross the cell membrane by diffusion or via auxin-specific influx carriers. There is little knowledge of the magnitudes of these fluxes in plants. Radiolabeled auxin uptake was measured in protoplasts isolated from roots of Arabidopsis thaliana. This was done for the wild-type, under treatments with additional unlabeled auxin to saturate the influx carriers, and for the influx carrier mutant auxin resistant 1 (aux1). We also used flow cytometry to quantify the relative abundance of cells expressing AUX1-YFP in the assayed population. At pH 5.7, the majority of auxin influx into protoplasts - 75% - was mediated by the influx carrier AUX1. An additional 20% was mediated by other saturable carriers. The diffusive influx of auxin was essentially negligible at pH 5.7. The influx of auxin mediated by AUX1, expressed as a membrane permeability, was 1.5 ± 0.3 μm s(-1) . This value is comparable in magnitude to estimates of efflux permeability. Thus, auxin-transporting tissues can sustain relatively high auxin efflux and yet not become depleted of auxin.

  7. Oligomerization of SCFTIR1 Is Essential for Aux/IAA Degradation and Auxin Signaling in Arabidopsis.

    Science.gov (United States)

    Dezfulian, Mohammad H; Jalili, Espanta; Roberto, Don Karl A; Moss, Britney L; Khoo, Kerry; Nemhauser, Jennifer L; Crosby, William L

    2016-09-01

    The phytohormone auxin is a key regulator of plant growth and development. Molecular studies in Arabidopsis have shown that auxin perception and signaling is mediated via TIR1/AFB-Aux/IAA co-receptors that assemble as part of the SCFTIR1/AFB E3 ubiquitin-ligase complex and direct the auxin-regulated degradation of Aux/IAA transcriptional repressors. Despite the importance of auxin signaling, little is known about the functional regulation of the TIR1/AFB receptor family. Here we show that TIR1 can oligomerize in planta via a set of spatially clustered amino acid residues. While none of the residues identified reside in the interaction interface of the TIR1-Aux/IAA degron, they nonetheless regulate the binding of TIR1 to Aux/IAA substrate proteins and their subsequent degradation in vivo as an essential aspect of auxin signaling. We propose oligomerization of TIR1 as a novel regulatory mechanism in the regulation of auxin-mediated plant patterning and development.

  8. Energy

    CERN Document Server

    Foland, Andrew Dean

    2007-01-01

    Energy is the central concept of physics. Unable to be created or destroyed but transformable from one form to another, energy ultimately determines what is and isn''t possible in our universe. This book gives readers an appreciation for the limits of energy and the quantities of energy in the world around them. This fascinating book explores the major forms of energy: kinetic, potential, electrical, chemical, thermal, and nuclear.

  9. Report on behalf of the ''Commission mixte Paritaire'' commissioned to propose a text on the arrangements remaining in discussion and concerning the law project relative to the gas and electric power market and to the energy public utilities; Rapport au nom de la Commission mixte paritaire chargee de proposer un texte sur les dispositions restant en discussion du projet de loi relatif aux marches energetiques et au service public de l'energie

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2002-12-01

    In the framework of the energy market opening, this document presents by a comparative table, the recommendations of the Senate and the National Assembly. After examination of this table, the ''Commission Paritaire'' elaborates a common text, presented in the second part of the document. (A.L.B.)

  10. ARF-Aux/IAA interactions through domain III/IV are not strictly required for auxin-responsive gene expression

    OpenAIRE

    2013-01-01

    Auxin response factors (ARFs), together with auxin/indole acetic acid proteins (Aux/IAAs), are transcription factors that play key roles in regulating auxin-responsive transcription in plants. Current models for auxin signaling predict that auxin response is dependent on ARF-Aux/IAA interactions mediated by the related protein-protein interaction domain (i.e., referred to as the CTD) found in the ARF and Aux/IAA C-terminal regions. When auxin concentrations in a cell are low, ARF activators r...

  11. Energy

    CERN Document Server

    Robertson, William C

    2002-01-01

    Confounded by kinetic energy? Suspect that teaching about simple machines isn t really so simple? Exasperated by electricity? If you fear the study of energy is beyond you, this entertaining book will do more than introduce you to the topic. It will help you actually understand it. At the book s heart are easy-to-grasp explanations of energy basics work, kinetic energy, potential energy, and the transformation of energy and energy as it relates to simple machines, heat energy, temperature, and heat transfer. Irreverent author Bill Robertson suggests activities that bring the basic concepts of energy to life with common household objects. Each chapter ends with a summary and an applications section that uses practical examples such as roller coasters and home heating systems to explain energy transformations and convection cells. The final chapter brings together key concepts in an easy-to-grasp explanation of how electricity is generated. Energy is the second book in the Stop Faking It! series published by NS...

  12. Dodo remains from an in situ context from Mare aux Songes, Mauritius

    Science.gov (United States)

    Meijer, Hanneke J. M.; Gill, Arike; de Louw, Perry G. B.; van den Hoek Ostende, Lars W.; Hume, Julian P.; Rijsdijk, Kenneth F.

    2012-03-01

    Since 2005, excavations at Mare aux Songes, Mauritius, have revealed the presence of a very rich, ˜4,200-year-old fossil bone bed including dodo ( Raphus cucullatus) bones and bone fragments. The recently excavated dodo assemblage comprises at least 17 individuals and is characterised by the presence of small and fragile skeletal elements, a dominance of leg elements and an absence of juveniles. The hydrology of the area suggests that dodos, like many other species, were probably lured to Mare aux Songes by the presence of freshwater during times of drought. The most likely scenario for the origin of the fossil deposit is that animals became trapped in the sediment in repeated miring events, which would favour the conservation of hindlimbs. Such a scenario is fully in accordance with the taphonomic characteristics of the bone assemblage.

  13. Le Carnaval de Schignano : un dernier salut aux émigrants

    Directory of Open Access Journals (Sweden)

    Cristina Del Biaggio

    2011-05-01

    Full Text Available Pour arriver à Schignano, il faut passer par una cürva al giazz e una cürva al suu [Un virage dans la glace et un virage au soleil], comme disent les mots en dialecte d’une récente chanson écrite par Davide Van De Sfroos, compositeur-interprète de la région. C’est dans ce petit hameau de la Vallée d’Intelvi, au-dessus du Lac de Côme, que, tous les ans, le carnaval anime le village. Une fête populaire spontanée, sans règles écrites, ni lois, qui survit grâce aux habitants qui l’animent, aux ar...

  14. Genome-wide analysis of Aux/IAA and ARF gene families in Populus trichocarpa

    Energy Technology Data Exchange (ETDEWEB)

    Kalluri, Udaya C [ORNL; DiFazio, Stephen P [West Virginia University; Brunner, A. [Virginia Polytechnic Institute and State University (Virginia Tech); Tuskan, Gerald A [ORNL

    2007-01-01

    Auxin/Indole-3-Acetic Acid (Aux/IAA) and Auxin Response Factor (ARF) transcription factors are key regulators of auxin responses in plants. A total of 35 Aux/IAA and 39 ARF genes were identified in the Populus genome. Comparative phylogenetic analysis revealed that the subgroups PoptrARF2, 6, 9 and 16 and PoptrIAA3, 16, 27 and 29 have differentially expanded in Populus relative to Arabidopsis. Activator ARFs were found to be two fold-overrepresented in the Populus genome. PoptrIAA and PoptrARF gene families appear to have expanded due to high segmental and low tandem duplication events. Furthermore, expression studies showed that genes in the expanded PoptrIAA3 subgroup display differential expression. The gene-family analysis reported here will be useful in conducting future functional genomics studies to understand how the molecular roles of these large gene families translate into a diversity of biologically meaningful auxin effects.

  15. Une offre de services adaptée aux chercheurs

    CERN Document Server

    Chaney, Eliane; Vigen, Jens

    2001-01-01

    Ayant l'un des groupes de lecteurs les plus exigeants dans le monde scientifique et des ressources comparables à celles d'une collection de moyenne bibliothèque universitaire, le Service de l'Information Scientifique du CERN utilise toute sa créativité pour ne pas disparaître entre l'offre et la demande. Le CERN a pour but d'être un centre d'excellence dans le domaine de la physique des hautes energies et des technologies connexes. Le Service d'Information Scientifique réalise cet objectif en préservant la mémoire des développements de la physique et en appliquant les technologies avancées des sciences de l'information et du commerce électronique.

  16. Application of real-time RT-PCR quantification to evaluate differential expres sion of Arabidopsis Aux/IAAgenes

    Institute of Scientific and Technical Information of China (English)

    2001-01-01

    The molecular techniques including Northern blot, dot blot, in situ hybridization, etc. have been success fully used to estimate semi-quantitatively mRNA levels in plant samples. In this study, we employed a real-time reverse transcription-PCR (RT-PCR) assay using SYBR Green Ifluorescence methodology to evaluate accurate quant itation and sequence specific detection of Aux/IAA mRNA levels in Arabidopsis. Results obtained indicate a linear dynamic range of 102-106 Aux/IAA mRNA copies with standard de viations of generally less than 15%. As a model experiment,the outcome of analysis of expression patterns of five Aux/IAA genes in Arabidopsis under various chemical and temperature treatments is presented. The method presented here provides a sensitive and rapid technique to evaluate plant Aux/IAA mRNA expression levels in nanogram order.

  17. Simulation of a hybrid fuel cell electric powered vehicle; intermediary elements of power storage; Simulation d'un vehicule electrique a source hybridee pile a combustible; elements intermediaires de stockage de la puissance

    Energy Technology Data Exchange (ETDEWEB)

    Candusso, D.; Rulliere, E.; Yonnet, J.P. [Ecole Nationale Superieure d' Ingenieurs Electriciens de Grenoble, 38 - Saint Martin d' Heres (France); Baurens, P. [CEA/Grenoble, Dept. d' Etudes des Materiaux, DEM, 38 (France)

    2000-07-01

    Studies carried out by the LEG ('Laboratoire Electrotechnique de Grenoble') on the modelling of the different elements of the traction chains of batteries electric powered vehicles (motors, electric converters..) and on the coupling batteries - super-capacitors by a converter allowing to manage the energy exchanges between these different storage elements are basic works for the future studies of fuel cells vehicles. In this article is shown that the electric size range of each components of the traction chain is strongly conditioned by those of its neighbours and that a global simulation of the chain is a precious tool of decision assistance. The interest to combine the energy source is presented too. (O.M.)

  18. [Aide aux jeunes diabétiques, a diabetes school for children].

    Science.gov (United States)

    Cahané, Michel; Vias, Marthe

    2011-01-01

    The general aim of the association Aide aux jeunes diabétiques (AID) (Help for young diabetics) is to help children and their families live as well as possible with the disease. This requires specific education which forms part of the overall therapy and which combines training, information and patient compliance. The AJD works on all three of these levels during the holidays it organises for young diabetics.

  19. Disruptions in AUX1-Dependent Auxin Influx Alter Hypocotyl Phototropism in Arabidopsis

    Institute of Scientific and Technical Information of China (English)

    Bethany B.Stone; Emily L.Stowe-Evans; Reneé M.Harper; R.Brandon Celaya; Karin Ljung; G(o)ran Sandberg; Emmanuel Liscum

    2008-01-01

    Phototropism represents a differential growth response by which plant organs can respond adaptively to changes in the direction of incident light to optimize leaf/stem positioning for photosynthetic light capture and root growth orientation for water/nutrient acquisition. Studies over the past few years have identified a number of components in the signaling pathway(s) leading to development of phototropic curvatures in hypocotyls. These include the phototropin photoreceptors (phot1 and phot2) that perceive directional blue-light (BL) cues and then stimulate signaling,leading to relocalization of the plant hormone auxin, as well as the auxin response factor NPH4/ARF7 that responds to changes in local auxin concentrations to directly mediate expression of genes likely encoding proteins necessary for development of phototropic curvatures. While null mutations in NPH4/ARF7 condition an aphototropic response to unidirectional BL, seedlings carrying the same mutations recover BL-dependent phototropic responsiveness if coirradiated with red light (RL) or pre-treated with either ethylene. In the present study, we identify second-site enhancer mutations in the nph4 background that abrogate these recovery responses. One of these mutations-map1 ((m)odifier of (a)rf7 (p)henotypes (1))-was found to represent a missense allele of AUX1-a gene encoding a high-affinity auxin influx carrier previously associated with a number of root responses. Pharmocological studies and analyses of additional aux1 mutants confirmed that AUX1 functions as a modulator of hypocotyl phototropism. Moreover, we have found that the strength of dependence of hypocotyl phototropism on AUX1-mediated auxin influx is directly related to the auxin responsiveness of the seedling in question.

  20. Energy

    Science.gov (United States)

    2003-01-01

    Canada, Britain, and Spain. We found that the energy industry is not in crisis ; however, U.S. government policies, laws, dollars, and even public...CEIMAT (Centro de Investagaciones Energeticas , Medioambeintales y Tecnologicas) Research and development Page 3 of 28ENERGY 8/10/04http://www.ndu.edu...meet an emerging national crisis (war), emergency (natural disaster), or major impact event (Y2K). Certain resources are generally critical to the

  1. Exclusive {rho}{sup 0} meson electroproduction at intermediate square momentum transfer with the CLAS detector (Jefferson laboratory); Electroproduction exclusive de meson vecteur {rho}{sup 0} a virtualite intermediaire a Jlab avec le detecteur CLAS

    Energy Technology Data Exchange (ETDEWEB)

    Hadjidakis, C

    2002-12-01

    This report presents the exclusive {rho}{sup 0} meson electroproduction on the nucleon at intermediate square momentum transfers Q{sup 2} (1.5 < Q{sup 2} < 3 GeV{sup 2}) and above the resonance region. The experiment has been taken place at the Jefferson laboratory with the CLAS detector, with a 4.2 GeV beam energy on an hydrogen target in the February-March 1999 period. We present the results and in particular the L/T separated cross sections. This experimentally unexplored domain experimentally is at the intersection between traditional 'soft' hadronic physics models (VDM and Regge inspired models) and 'hard' pQCD inspired approaches (recently introduced Generalized Parton Distribution). We discuss both approaches and their domain of validity. (author)

  2. Despite a good figure for first half 2011, the French photovoltaic sector is dramatically hit; Malgre un bon bilan intermediaire 2011, le photovoltaique francais est touche de plein fouet

    Energy Technology Data Exchange (ETDEWEB)

    Fovez, G.

    2010-10-15

    In France the photovoltaic energy sustained an important growth in 2011, particularly during the first semester. The growth during the second semester is expected to be less important since it will be assured only by the projects that are too advanced to have been impacted by the new legislation. For the government the difference of costs between photovoltaic power and the grid power stays too important to justify big investment. The situation is totally different in Germany, Spain or Italy where the electricity price is far higher. For these countries, photovoltaic power require less financial incentive to become competitive. In France the annual production of photovoltaic power reached 676 GWh in 2010 and is expected to double in 2011 but will stay marginal when compared to the global electricity production of the country (less than 0.2%). (A.C.)

  3. Exclusive Electroproduction of meson rho on the nucleon Virtualite Intermediate With the CLAS Detector at Jlab; Electroproduction Exclusive de meson rho sur le nucleon Virtualite Intermediaire Avec le Detecteur CLAS at Jlab

    Energy Technology Data Exchange (ETDEWEB)

    Hadjidakis, Cynthia [Univ. of Paris-Sud, Orsay (France). Inst. of Nuclear Physics of Orsay

    2002-12-17

    This report presents the exclusive rho0 meson electroproduction on the nucleon at intermediate square momentum transfers Q2 (1.5 < Q2 < 3 GeV2) and above the resonance region. The experiment has been taken place at the Jefferson laboratory with the CLAS detector, with a 4.2 GeV beam energy on a hydrogen target in the February-March 1999 period. They present the results and in particular the L/T separated cross sections. This experimentally unexplored domain experimentally is at the intersection between traditional ''soft'' hadronic physics models (VDM and Regge inspired models) and ''hard'' pQCD inspired approaches (recently introduced Generalized Parton Distribution). They discuss both approaches and their domain of validity.

  4. The ARF, AUX/IAA and GH3 gene families in citrus: genome-wide identification and expression analysis during fruitlet drop from abscission zone A.

    Science.gov (United States)

    Xie, Rangjin; Pang, Shaoping; Ma, Yanyan; Deng, Lie; He, Shaolan; Yi, Shilai; Lv, Qiang; Zheng, Yongqiang

    2015-12-01

    Completion of the whole genome sequencing of citrus enabled us to perform genome-wide identification and functional analysis of the gene families involved in agronomic traits and morphological diversity of citrus. In this study, 22 CitARF, 11 CitGH3 and 26 CitAUX/IAA genes were identified in citrus, respectively. Phylogenetic analysis revealed that all the genes of each gene family could be subdivided into three groups and showed strong evolutionary conservation. The GH3 and AUX/IAA gene families shrank and ARF gene family was highly conserved in the citrus genome after speciation from Arabidopsis thaliana. Tissue-specific expression profiles revealed that 54 genes were expressed in at least one tissue while just 5 genes including CitARF07, CitARF20, CitGH3.04, CitAUX/IAA25 and CitAUX/IAA26 with very low expression level in all tissues tested, suggesting that the CitARF, CitGH3 and CitAUX/IAA gene families played important roles in the development of citrus organs. In addition, our data found that the expression of 2 CitARF, 4 CitGH3 and 4 AUX/IAA genes was affected by IAA treatment, and 7 genes including, CitGH3.04, CitGH3.07, CitAUX/IAA03, CitAUX/IAA04, CitAUX/IAA18, CitAUX/IAA19 and CitAUX/IAA23 were related to fruitlet abscission. This study provides a foundation for future studies on elucidating the precise role of citrus ARF, GH3 and AUX/IAA genes in early steps of auxin signal transduction and open up a new opportunity to uncover the molecular mechanism underlying citrus fruitlet abscission.

  5. Identification of ARF and AUX/IAA gene families in Rafflesia cantleyi

    Science.gov (United States)

    Elias, Nur Atiqah Mohd; Goh, Hoe-Han; Isa, Nurulhikma Md; Wan, Kiew-Lian

    2016-11-01

    Rafflesia is a unique plant that produces the largest flowers in the world. It has a short blooming period of 6 to 7 days. Due to its rarity and limited accessibility, little is known about the growth and developmental process in the Rafflesia plant. In all plant species, auxin is the key hormone that is involved in growth and development. The auxin signal transduction involves members of the ARF transcription factor and AUX/IAA regulator families, which activate or inhibit the regulation of auxin response genes, thereby control the developmental process in plants. To gain a better understanding of molecular regulations in the Rafflesia plant development during flowering, members of the ARF and AUX/IAA gene families were identified from the transcriptome data of flower blooming stages in Rafflesia cantleyi. Based on Rafflesia unique transcripts (UTs) against the Arabidopsis TAIR database using BLASTX search, a total of nine UTs were identified as ARF transcription factors, while another seven UTs were identified as AUX/IAA regulators. These genes were found to be expressed in all three R. cantleyi flower stages i.e. days 1 (F1), 3 (F2), and 5 (F3). Gene expression analysis identified three genes that are differentially expressed in stage F1 vs. F2 i.e. IAA4 is upregulated while IAA8 and ARF3 are downregulated. These genes may be involved in the activation and/or inhibition of the auxin signal transduction pathway. Further analysis of these genes may unravel their function in the phenotypic development of the Rafflesia plant.

  6. Chemical composition and geologic history of saline waters in Aux Vases and Cypress Formations, Illinois Basin

    Science.gov (United States)

    Demir, I.; Seyler, B.

    1999-01-01

    Seventy-six samples of formation waters were collected from oil wells producing from the Aux Vases or Cypress Formations in the Illinois Basin. Forty core samples of the reservoir rocks were also collected from the two formations. Analyses of the samples indicated that the total dissolved solids content (TDS) of the waters ranged from 43,300 to 151,400 mg/L, far exceeding the 35,400 mg/mL of TDS found in typical seawater. Cl-Br relations suggested that high salinities in the Aux Vases and Cypress formation waters resulted from the evaporation of original seawater and subsequent mixing of the evaporated seawater with concentrated halite solutions. Mixing with the halite solutions increased Na and Cl concentrations and diluted the concentration of other ions in the formation waters. The elemental concentrations were influenced further by diagenetic reactions with silicate and carbonate minerals. Diagenetic signatures revealed by fluid chemistry and rock mineralogy delineated the water-rock interactions that took place in the Aux Vases and Cypress sandstones. Dissolution of K-feldspar released K into the solution, leading to the formation of authigenic illite and mixed-layered illite/smectite. Some Mg was removed from the solution by the formation of authigenic chlorite and dolomite. Dolomitization, calcite recrystallization, and contribution from clay minerals raised Sr levels significantly in the formation waters. The trend of increasing TDS of the saline formation waters with depth can be explained with density stratification. But, it is difficult to explain the combination of the increasing TDS and increasing Ca/Na ratio with depth without invoking the controversial 'ion filtration' mechanism.

  7. DES ACCENTS ÉTRANGERS AUX ABORDS DE L’UTOPIE BROSSARDIENNE

    Directory of Open Access Journals (Sweden)

    Ghislaine Boulanger

    2011-12-01

    Full Text Available Cet article analyse l’analogie entre une langue sexiste et une langue étrangère, et démontre comment cette comparaison met en jeu des dimensions identitaires qui seront progressivement refoulées aux frontières de l’utopie féministe imaginée par Nicole Brossard. Cette étude met en relief certains problèmes d’exclusion reliés à la disparition symbolique de l’accent, tels que l’effacement de l’identité juive dans le roman Picture theory.

  8. Biomonitoring de l'exposition aux polluants environnementaux dans la population de Kinshasa

    OpenAIRE

    Tuakuila Kabengele, Joël

    2010-01-01

    Contexte et objectif de la recherche. La pollution chimique constitue une préoccupation majeure de santé publique dans les pays industrialisés mais également dans l’hémisphère sud, et plus particulièrement en Afrique. Des données relatives à l’exposition de l’Homme aux substances chimiques ne sont actuellement pas disponibles pour la ville de Kinshasa. L’objectif de cette thèse était de dresser un état des lieux de l’imprégnation de la population kinoise à quelques polluants environnementaux ...

  9. Conference - Découvrez notre région - Aux bornes de Genève

    CERN Multimedia

    Staff Association

    2016-01-01

      Les premières bornes-frontière sont posées en 1816 aux confins du royaume de Sardaigne, d’autres feront leur apparition dès 1818 du côté du royaume de France. Deux cents ans plus tard, on retrouve toujours ces pierres, témoins de la naissance du canton et patrimoine partagé des communes genevoises, gessiennes et savoisiennes qui font notre région.  

  10. Decision no. 2011-DC-0224 of the French nuclear safety authority from May 5, 2011, ordering the French atomic energy and alternative energies commission (CEA) to proceed to a complementary safety evaluation of some of its basic nuclear facilities in the eyes of the Fukushima Daiichi nuclear power plant accident; Decision no. 2011-DC-0224 de l'Autorite de surete nucleaire du 5 mai 2011 prescrivant au Commissariat a l'Energie Atomique et aux energies alternatives (CEA) de proceder a une evaluation complementaire de la surete de certaines de ses installations nucleaires de base au regard de l'accident survenu a la centrale nucleaire de Fukushima Daiichi

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2011-07-01

    As a consequence of the accident of the Fukushima Daiichi nuclear power plant (Japan), the French Prime Minister entrusted the French nuclear safety authority (ASN) with the mission to carry out a safety analysis re-evaluation of the French nuclear facilities, and in particular the nuclear power plants. A decision has been addressed by the ASN to each nuclear operator with the specifications of this safety re-evaluation analysis and the list of facilities in concern. This document is the decision addressed to the French atomic energy commission (CEA). (J.S.)

  11. Est-on aux pizzas comme on est aux casseroles ? Sur les emplois métonymiques des syntagmes prépositionnels en à avec un nom d’objet

    Directory of Open Access Journals (Sweden)

    Hernandez Patricia

    2012-07-01

    Full Text Available Ce travail aborde les emplois spatiaux du type être à + article défini + nom d’objet (par exemple, être aux surgelés, aux casseroles, aux costumes, aux pizzas. De tels emplois sont compris, dans les ouvrages de spécialité comme des relations de localisation interprétables selon les connaissances partagées aussi bien sur le contexte d’énonciation que sur l’univers environnant. Sur la base de ce savoir lié aux routines établies, le repérage induit par la préposition à déclenche des inférences sur les interactions entre l’entité à situer et l’objet de référence. Notre parcours des descriptions existantes (Vandeloise 1988, Borillo 2001, Aurnague 2009, Corblin 2010 est suivi d’une réflexion, inspirée des principes de base de la sémantique cognitive (Langacker 1987, sur la nature de ces connexions. Ainsi, notre analyse prend en compte la corrélation entre objets et actions dans les rapports expérientiels entre l’être humain et son environnement : les lexèmes renvoyant aux entités dénotées offrent des clés d’accès à des routines et des synthèses d’expérience (Janet 1935, Brown 1965, Cadiot et Nemo 1997b. Ces scénarios, organisés en cadres d’interactions typiques (Fillmore 1982, fournissent un fond de connaissances permettant des connexions métonymiques par proximité conceptuelle selon des Modèles Cognitifs Idéalisés (Lakoff 1987, Radden & Kövecses 1999. Notre réflexion théorique est étayée par des occurrences attestées qui permettent de mieux saisir le rôle du contexte et des critères pragmatiques dans l’interprétation des formulations. En effet, sur la base d’une analyse contextuelle d’usages effectifs sur support électronique (Google France octobre 2011, nous présentons une ébauche de classement de ces emplois particuliers. La taxinomie proposée, qui ne se veut nullement définitive, conçoit les formulations en à avec des noms d’objet comme donnant un accès mental

  12. Les représentations sociales du travail dans des parcours de retour aux études aux niveaux collégial et universitaire

    Directory of Open Access Journals (Sweden)

    Claude Julie Bourque

    2009-10-01

    Full Text Available Cet article porte sur le volet éducatif de la production et de la reproduction de la main-d’œuvre hautement qualifiée par l’examen des processus en jeu au moment des retours aux études dans des programmes de formation technique et de génie. Nous nous intéressons en particulier à une situation emblématique des référentiels politiques récents en matière d’éducation, soit les retours aux études. Nous cherchons à mieux comprendre comment le retour aux études se réalise, comment les représentations professionnelles agissent sur ce dernier et comment l’expérience scolaire influence les projets des individus. Notre analyse met l’accent sur les ressorts sociaux et culturels des décisions relatives au choix de programmes et à l’orientation professionnelle d’étudiants qui ont interrompu leurs études et qui y retournent. Nous explorons le discours d’étudiants et d’étudiantes qui ont choisi de profiter de la souplesse du système d’éducation québécois pour compléter ou bonifier leur formation initiale ou encore pour tenter une réorientation professionnelle. En particulier, nous désirons savoir comment les différentes formes d’articulation entre éducation et travail influencent les représentations sociales des étudiants au sujet des titres scolaires, de l’évolution de leur carrière scolaire et de leur projet professionnel personnel.This paper deals with the educational aspect of the production and reproduction of highly qualified manpower through examining the processes at play when people return to school by enrolling in technical or engineering training programs. Our interest is focussed specifically on returning to school as an emblematic situation in recent educational policy frameworks. We are trying to better understand how school return is done, how professional representations act upon it and how previous school experience influences individual projects. Our analysis focuses on the

  13. Novel auxin transport inhibitors phenocopy the auxin influx carrier mutation aux1.

    Science.gov (United States)

    Parry, G; Delbarre, A; Marchant, A; Swarup, R; Napier, R; Perrot-Rechenmann, C; Bennett, M J

    2001-02-01

    The hormone auxin is transported in plants through the combined actions of diffusion and specific auxin influx and efflux carriers. In contrast to auxin efflux, for which there are well documented inhibitors, understanding the developmental roles of carrier-mediated auxin influx has been hampered by the absence of specific competitive inhibitors. However, several molecules that inhibit auxin influx in cultured cells have been described recently. The physiological effects of two of these novel influx carrier inhibitors, 1-naphthoxyacetic acid (1-NOA) and 3-chloro-4-hydroxyphenylacetic acid (CHPAA), have been investigated in intact seedlings and tissue segments using classical and new auxin transport bioassays. Both molecules do disrupt root gravitropism, which is a developmental process requiring rapid auxin redistribution. Furthermore, the auxin-insensitive and agravitropic root-growth characteristics of aux1 plants were phenocopied by 1-NOA and CHPAA. Similarly, the agravitropic phenotype of inhibitor-treated seedlings was rescued by the auxin 1-naphthaleneacetic acid, but not by 2,4-dichlorophenoxyacetic acid, again resembling the relative abilities of these two auxins to rescue the phenotype of aux1. Further investigations have shown that none of these compounds block polar auxin transport, and that CHPAA exhibits some auxin-like activity at high concentrations. Whilst results indicate that 1-NOA and CHPAA represent useful tools for physiological studies addressing the role of auxin influx in planta, 1-NOA is likely to prove the more useful of the two compounds.

  14. Edgar Morin, aux risques d'une pensée libre

    CERN Document Server

    Pena Vega, Alfredo

    2011-01-01

    8 juillet 2011 ; Edgar Morin fête ses 90 ans et 60 ans passés au sein du CNRS. Une occasion unique pour l'équipe d'Hermès et Dominique Wolton, d'analyser et de critiquer la pensée de ce grand intellectuel. Aspiration à la liberté, attention à la complexité du monde et une profonde originalité épistémologique, Edgar Morin a bouleversé aussi bien la philosophie, la politique que la physique ou les mathématiques. Avec un souci constant : faire communiquer et interagir toutes les sciences pour relever le défi de la compréhension. Plus qu'un simple hommage, ce numéro questionne l'œuvre d'Edgar Morin au filtre de la communication, dévoilant les mécaniques de cette vision du monde profondément originale, échappant aux cloisonnements et aux certitudes académiques, portée par un projet central, celui d'une réforme des connaissances. Suivant les cheminements intellectuels et politiques de ce chercheur itinérant et passionné à travers l'Europe, l'Est, l'Amérique latine ou les États-Unis, ce...

  15. Safety Training: Sensibilisation aux gestes et postures de travail

    CERN Multimedia

    Laetitia Laddada

    2004-01-01

    Nous vous proposons un nouveau cours de sécurité lié aux manutentions manuelles (durée 1 jour) : Sensibilisation aux gestes et postures de travail. Si vous êtes amené à manipuler régulièrement des charges lourdes ou volumineuses, cette formation peut vous aider à prévenir les lésions musculaires ou dorsales. A l'issue de cette formation, vous serez capable d'adopter et d'appliquer les principes de base de sécurité physique et d'économie d'efforts dans les manipulations d'objets. Les cours sont pris en charge par la Commission de Sécurité. L'inscription EDH est obligatoire. Pour plus d'information, veuillez consulter les pages Formation & Développement (Groupe Sécurité). Formation & Développement (Groupe Sécurité) FORMATION EN SECURITE SAFETY TRAINING Laetitia Laddada 73811 - 79236 safety.training@cern.ch

  16. Exposition précoce aux aliments et allergies alimentaires chez les enfants

    Science.gov (United States)

    Chin, Benetta; Chan, Edmond S.; Goldman, Ran D.

    2014-01-01

    Résumé Question J’étais sous l’impression qu’on devrait éviter de donner aux nourrissons des aliments potentiellement allergènes comme des noix, du lait de vache et des œufs pour prévenir le développement de réactions allergiques. Quels conseils devrait-on donner aux parents concernant l’introduction des aliments durant la petite enfance et le développement des allergies alimentaires? Réponse Il n’y a pas de données probantes indiquant que retarder l’introduction d’aliments particuliers après l’âge de 6 mois aide à prévenir les allergies. Une récente déclaration de la Société canadienne de pédiatrie ne recommande aucun délai quant à l’introduction d’aliments durant la petite enfance. De récentes études de recherche semblent aussi faire valoir que l’introduction précoce (entre 4 et 6 mois) d’aliments possiblement allergènes procure une forme de protection et contribue à prévenir les allergies, mais il faudrait plus de recherche à ce sujet.

  17. Safety Training: Sensibilisation aux gestes et postures de travail

    CERN Multimedia

    Laetitia Laddada

    2004-01-01

    If you wish to participate in one of the following courses, please discuss with your supervisor and apply electronically directly from the course description pages that can be found on the Web at: http://www.cern.ch/Training/ or fill in an 'application for training' form available from your Divisional Secretariat or from your DTO (Divisional Training Officer). Applications will be accepted in the order of their receipt. Nous vous proposons un nouveau cours de sécurité lié aux manutentions manuelles (durée 1 jour) : Sensibilisation aux gestes et postures de travail. Si vous êtes amené à manipuler régulièrement des charges lourdes ou volumineuses, cette formation peut vous aider à prévenir les lésions musculaires ou dorsales. A l'issue de cette formation, vous serez capable d'adopter et d'appliquer les principes de base de sécurité physique et d'économie d'efforts dans les manipulations...

  18. Identification and expression analysis of primary auxin-responsive Aux/IAA gene family in cucumber (Cucumis sativus)

    Indian Academy of Sciences (India)

    Defang Gan; Dan Zhuang; Fei Ding; Zhenzhou Yu; Yang Zhao

    2013-12-01

    Aux/IAA is an important gene family involved in many aspects of growth and development. Aux/IAA proteins are short-lived nuclear proteins that are induced primarily by various phytohormones. In this study, 29 Aux/IAA family genes (CsIAA01–CsIAA29) were identified and characterized in cucumber, including gene structures, phylogenetic relationships, conserved protein motifs and chromosomal locations. These genes show distinct organizational patterns of their putative motifs. The distributions of the genes vary: except for five CsIAA genes in cucumber that were not located, seven CsIAA genes were found on scaffold, while the other 17 CsIAA genes were distributed on seven other chromosomes. Based on a phylogenetic analysis of the Aux/IAA protein sequences from cucumber, Arabidopsis and other plants, the Aux/IAA genes in cucumber were categorized into seven subfamilies. To investigate whether the expression of CsIAA genes is associated with auxin induction, their transcript levels were monitored in seedlings treated with IAA (indole-3-acetic acid), and their expression patterns were analysed by semiquantitative reverse transcription-polymerase chain reaction (RT-PCR). The results showed that 11/29 CsIAA genes were expressed in leaves whether treated with IAA or not and the time course of processing and compared with the control, five CsIAA genes showed low expression only after 60 min treatment with IAA, while 11 genes showed no expression. These results provide useful information for further functional analysis of Aux/IAA gene family in cucumber.

  19. Répondre aux suds : imaginaires et défis géopolitiques aux frontières du nord : cas du maroc et du mexique.

    Directory of Open Access Journals (Sweden)

    Philippe Sierra

    2010-11-01

    Full Text Available Maroc et Mexique sont deux Etats qui ont construit depuis une quinzaine d’années un nouveau discours et de nouvelles politiques pour valoriser leur proximité au « Nord ». Alena et Mexamérique d’un côté, quasi intégration au marché européen et péninsule tingitane de l’autre, sont devenues des lignes majeures des discours gouvernementaux. Cette valorisation des nords a provoqué une nouvelle vision des territoires nationaux, dans laquelle il faut répondre aux inquiétudes des suds, éloignés et sources de problèmes géopolitique tant au Mexique (la rébellion néo-zapatiste au Chiapas qu’au Maroc (le Sahara occidental. Cet article tente de montrer comment à travers les nouveaux plans de développement mis en place par les Etats pour répondre différemment à leurs inquiétudes, de nouvelles représentations géopolitiques révélatrices des « imaginaires du sud » se mettent en place auxquelles répondent des populations en soif d’identité.

  20. Electronic storage capacity of ceria: role of peroxide in Aux supported on CeO2(111) facet and CO adsorption.

    Science.gov (United States)

    Liu, Yinli; Li, Huiying; Yu, Jun; Mao, Dongsen; Lu, Guanzhong

    2015-11-07

    Density functional theory (DFT+U) was used to study the adsorption of Aux (x = 1-4) clusters on the defective CeO2(111) facet and CO adsorption on the corresponding Aux/CeO2-x catalyst, in this work Aux clusters are adsorbed onto the CeO2-x + superoxide/peroxide surface. When Au1 is supported on the CeO2(111) facet with an O vacancy, the strong electronegative Au(δ-) formed is not favorable for CO adsorption. When peroxide is adsorbed on the CeO2(111) facet with the O vacancy, Aux was oxidized, resulting in stable Aux adsorption on the defective ceria surface with peroxide, which promotes CO adsorption on the Aux/CeO2-x catalyst. With more Au atoms in supported Aux clusters, CO adsorption on this surface becomes stronger. During both the Au being supported on CeO2-x and CO being adsorbed on Aux/CeO2-x, CeO2 acts as an electron buffer that can store/release the electrons. These results provide a scientific understanding for the development of high-performance rare earth catalytic materials.

  1. Introduction aux modèles espace état et au filtre de Kalman

    OpenAIRE

    Lemoine, Matthieu; Pelgrin, Florian

    2003-01-01

    Nous détaillons ici les principaux concepts et problèmes liés aux modèles espace-état, ainsi que leurs applications. Nous présentons d'abord ces modèles dans leur généralité. Ensuite, nous explicitons les algorithmes utilisés afin de procéder à l'estimation par le maximum de vraisemblance, c'est-à-dire fondamentalement le filtre de Kalman et l'algorithme EM. Nous considérons enfin quatre applications : les décompositions tendance-cycle, l'extraction d'indicateurs coïncidents d'activité, l'est...

  2. Des furoncles résistants aux antibiotiques: penser à la myiase !!

    Science.gov (United States)

    Ajili, Faida; Abid, Rim; Bousseta, Najeh; Mrabet, Ali; Karoui, Ghazi; Louzir, Bassem; Battikh, Riadh; Othmani, Salah

    2013-01-01

    Les myiases sont des infections parasitaires par des larves de mouches. La localisation cutanée doit être évoquée de retour d'un pays tropical devant une évolution inhabituelle de lésions cutanées. Nous rapportons une observation d'un militaire tunisien, ayant séjourné en République Démocratique du Congo. Il était atteint de myiase cutanée simulatrice d'une furonculose résistante aux antibiotiques. L'intérêt de cette observation est de souligner l'importance d’évoquer la myiase dont le traitement est simple et rapide chez un patient de retour de zone d'endémie. PMID:24106569

  3. Un programme simple de regression non-lineaire pondere adapte aux estimations de biomasse forestiere

    OpenAIRE

    Bergez, Jacques-Eric,; BISCH, J.L.; Cabanettes, Alain; Pages, L.

    1988-01-01

    On présente un programme permettant l’ajustement de données expérimentales aux modèles non-linéaires : Y= a * X1α * X2β +b ou Y= a * X1α + b particulièrement utile dans le domaine des estimations de biomasse forestière (Y = biomasse totale d’un arbre ; Xl = diamètre à 1,30 m ; X2 = hauteur totale). Le calcul intègre à la fois : - la recherche des valeurs optimales des exposants α et β; - la possibilité de pondérer les résidus de la régression par une fonction puissance de la variable e...

  4. Safety Training: Ergonomie - Sensibilisation aux gestes et postures de travail

    CERN Multimedia

    Laetitia Laddada

    2004-01-01

    Nous vous proposons un nouveau cours d'ergonomie (durée : 1 jour) Sensibilisation aux gestes et postures de travail. A l'issue de cette formation, vous serez capable d'adopter et d'appliquer les principes de base de sécurité physique et d'économie d'efforts dans les manipulations d'objets. Les cours sont pris en charge par la Commission de Sécurité. L'inscription EDH est obligatoire. Pour plus d'information, veuillez consulter les pages Formation & Développement (Groupe Sécurité). FORMATION EN SECURITE SAFETY TRAINING Laetitia Laddada 73811 - 79236 safety.training@cern.ch

  5. Le travail autonome de l’élève aux Pays-Bas

    OpenAIRE

    2012-01-01

    L’autonomie de l’élève est une réalité inscrite dans l’ensemble du système éducatif néerlandais depuis déjà plusieurs années. En rendre compte amène à décrire non seulement les innovations pédagogiques intervenues dans le primaire comme dans le secondaire, mais également leurs répercussions sur l’organisation de l’enseignement aux Pays-Bas. Les différents acteurs du système éducatif peuvent aujourd’hui commencer à en mesurer les bénéfices… comme les inconvénients. Autonomous learning has b...

  6. A. Lacassagne : de l’archive mineure aux Archives d’anthropologie criminelle

    Directory of Open Access Journals (Sweden)

    Philippe Artières

    2005-01-01

    Full Text Available En 1921, le médecin Alexandre Lacassagne offre à la ville de Lyon ses archives et son importante bibliothèque. Depuis son installation au début des années 1880, Lacassagne qui y détient la chaire de médecine légale et de toxicologie, est devenu l’une des figures les plus célèbre de la ville. Il est intervenu à plusieurs reprises dans les affaires municipales et notamment en matière d’hygiène urbaine, il a surtout pris part comme expert aux grandes affaires criminelles ; il a ainsi fait de Lyo...

  7. Observation spatiale et SIG: des outils pour cartographier les zones sensibles aux mouvements de terrain

    OpenAIRE

    Jean-Yves SCANVIC

    1994-01-01

    Les niveaux de sensibilité des sols aux mouvements de terrain ont été cartographiés dans différents bassins de risques en Bolivie, en Colombie et à Taïwan, selon une méthodologie développée au BRGM et fondée en partie sur l’extraction visuelle et numérique d’informations contenues dans les données de télédétection spatiale stéréoscopiques et leur gestion-valorisation dans un SIG. Ces cartes font apparaître l’intérêt de l’imagerie Spot pour la gestion du risque naturel....

  8. Observation spatiale et SIG: des outils pour cartographier les zones sensibles aux mouvements de terrain

    Directory of Open Access Journals (Sweden)

    Jean-Yves SCANVIC

    1994-12-01

    Full Text Available Les niveaux de sensibilité des sols aux mouvements de terrain ont été cartographiés dans différents bassins de risques en Bolivie, en Colombie et à Taïwan, selon une méthodologie développée au BRGM et fondée en partie sur l’extraction visuelle et numérique d’informations contenues dans les données de télédétection spatiale stéréoscopiques et leur gestion-valorisation dans un SIG. Ces cartes font apparaître l’intérêt de l’imagerie Spot pour la gestion du risque naturel.

  9. Herculanum. Des archives aux restitutions architecturales et décoratives

    OpenAIRE

    Dardenay, Alexandra; Allroggen-Bedel, Agnes; Eristov, Hélène; Grand-Clément, Adeline; Maraval, Marie-Laure; Marotta, Carla; Monteix, Nicolas; Rosso, Emmanuelle

    2016-01-01

    La campagne de 2015 du programme VESUVIA (Habitat et Société à Herculanum) s’est caractérisée par la multiplication des enquêtes archivistiques et muséales parallèlement aux travaux de terrain. En effet, l’enregistrement des décors in situ étant pratiquement achevé, l’attention de l’équipe se concentre désormais sur la recontextualisation des éléments prélevés lors des différentes phases de fouilles du site et sur la réalisation d’infographies de restitution à projeter dans les modèles 3D (fi...

  10. Administrative procedures linked with power production facilities that use renewable energy sources. Report made in application of article 6 of directive 2001/77/CE from October 27, 2001; Les procedures administratives liees aux installations de production d'electricite d'origine renouvelable. Rapport fait en application de l'article 6 de la directive 2001/77/CE du 27/10/2001

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-10-01

    This report presents an evaluation of the legislative and regulatory framework relative to power generation facilities that use renewable energy sources. It presents also the actions that have been carried out to reduce the obstacles to the development of these facilities (access to the power distribution and transportation grid). (J.S.)

  11. Analyse de l'évolution et modélisation des besoins énergétiques français. Application du modèle ABEL à des scénarios contrastés aux horizons 2000 et 2020 Evolutionary Analysis and Modeling of French Energy Needs. Applying the ABEL Model to Contrasting Scenarios for the Horizons 2000 and 2020

    Directory of Open Access Journals (Sweden)

    Roncato J. P.

    2006-11-01

    Full Text Available Devant l'enchérissement du pétrole, les pays industrialisés à faibles ressources énergétiques fossiles nationales devront recourir dans le futur à d'autres formes d'énergie (nucléaire, charbon, solaire. La transformation de ces énergies primaires en vecteurs commercialisables est caractérisée par des coûts d'investissement élevés. Cela impose de rechercher le meilleur taux d'utilisation des équipements face à une demande fortement modulée. L'étude de tels systèmes énergétiques procède en deux étapes : analyse des besoins en énergie, puis optimisation des équipements depuis le niveau de production jusqu'à l'utilisation. L'objet de cette communication est de présenter un modèle d'étude de la consommation (ABEL, qui s'appuie sur une analyse du système socio-économique national expliquant la formation et l'évolution des besoins d'énergie. Cette analyse aboutit à la construction de modèles de simulation des consommations d'énergie par secteur. Cette modélisation rend compte des variations saisonnières des besoins. Un modèle macro-économique de cohérence traduit les relations entre niveaux d'activité des différents secteurs, de façon à éviter des distorsions grossières dans une projection à long terme. Des scénarios permettent de simuler diverses hypothèses de développement économique et social. Faced with increasing oil prices, the industrialized countries with smail national fossil energy resources will have to look to other types of energy in the future (nuclear energy, coal, solar energy. The transformation of such primary energy sources into marketable carriers is characterized by high investment costs. This means that the best utilization factor for equipment will have to be sought after in the face of highly modulated demand. A survey of such energy systems is made in two steps: (a analyzing energy needs, and (b optimizing equipment all the way from initial production to end use. The aim of

  12. Adenosine Diphosphate Ribosylation Factor-GTPaseActivating Protein Stimulates the Transport of AUX1Endosome, Which Relies on Actin Cytoskeletal Organization in Rice Root DevelopmentF

    Institute of Scientific and Technical Information of China (English)

    Cheng Du; Yunyuan XU; Yingdian Wang; Kang Chong

    2011-01-01

    Polar auxin transport,which depends on polarized subcellular distribution of AUXIN RESISTANT 1/LIKE AUX1 (AUX1/LAX) influx carriers and PIN-FORMED (PIN) efflux carriers,mediates various processes of plant growth and development.Endosomal recycling of PIN1 is mediated by an adenosine diphosphate (ADP)ribosylation factor (ARF)-GTPase exchange factor protein,GNOM.However,the mediation of auxin influx carrier recycling is poorly understood.Here,we report that overexpression of OsAGAP,an ARF-GTPase-activating protein in rice,stimulates vesicle transport from the plasma membrane to the Golgi apparatus in protoplasts and transgenic plants and induces the accumulation of early endosomes and AUX1.AUX1 endosomes could partially colocalize with FM4-64 labeled early endosome after actin disruption.Furthermore,OsAGAP is involved in actin cytoskeletal organization,and its overexpression tends to reduce the thickness and bundling of actin filaments.Fluorescence recovery after photobleaching analysis revealed exocytosis of the AUX1 recycling endosome was not affected in the OsAGAP overexpression cells,and was only slightly promoted when the actin filaments were completely disrupted by Lat B.Thus,we propose that AUX1 accumulation in the OsAGAP overexpression and actin disrupted cells may be due to the fact that endocytosis of the auxin influx carrier AUX1 early endosome was greatly promoted by actin cytoskeleton disruption.

  13. Report made on behalf of the commission of economic affairs, of environment and of territory about the project of law, adopted by the Senate after urgency declaration (no. 326), relative to the energy markets and to the energy public utility; Rapport fait au nom de la commission des affaires economiques, de l'environnement et du territoire sur le projet de loi, adopte par le Senat apres declaration d'urgence (no. 326), relatif aux marches energetiques et au service public de l'energie

    Energy Technology Data Exchange (ETDEWEB)

    Gonnot, F.M

    2002-11-01

    This report concerns the transposition into French law of the directive 98/30/CE adopted by the European parliament and council on June 22, 1998, and concerning the common rules for the home natural gas market. In an introductory part, the report recalls first the principle and implementation of the regulation of the natural gas market (commission of energy regulation, role of the energy minister), and then explains its impact for the end-consumer and the conditions of the adaptation of the gas distribution network to this structure change (reinforcement of market contestableness, Gaz de France monopoly, competition between infrastructures, problem of investments coordination). The main part of the document concerns the works of the commission about the project of law adopted by the Senate, and the examination of its different articles: access to the natural gas networks, transparency and regulation of the natural gas sector, the gas public utility, the transport and distribution of natural gas, the underground storage, the control and sanctions, and the dispositions relative to the public electric utility. (J.S.)

  14. PROPOSITION D'UN MODELE DE L'EFFICACITE DU CO-COMMISSARIAT AUX COMPTES DANS LES SOCIETES ANONYMES COTEES FRANÇAISES

    OpenAIRE

    Bennecib, Jeannette

    2002-01-01

    International audience; Si le commissariat aux comptes est une institution reconnue par un large public, le co-commissariat aux comptes semble ignoré. Dans un contexte de remise en cause de la crédibilité des informations financières et de l'opinion de l'auditeur, nous nous interrogeons sur l'efficacité d'un double contrôle dans les SA cotées françaises. A partir du cadre conceptuel normatif de l'efficacité du cocommissariat aux comptes, nous proposons un modèle explicatif fondé sur le princi...

  15. Modelisation de la diffusion sur les surfaces metalliques: De l'adatome aux processus de croissance

    Science.gov (United States)

    Boisvert, Ghyslain

    Cette these est consacree a l'etude des processus de diffusion en surface dans le but ultime de comprendre, et de modeliser, la croissance d'une couche mince. L'importance de bien mai triser la croissance est primordiale compte tenu de son role dans la miniaturisation des circuits electroniques. Nous etudions ici les surface des metaux nobles et de ceux de la fin de la serie de transition. Dans un premier temps, nous nous interessons a la diffusion d'un simple adatome sur une surface metallique. Nous avons, entre autres, mis en evidence l'apparition d'une correlation entre evenements successifs lorsque la temperature est comparable a la barriere de diffusion, i.e., la diffusion ne peut pas etre associee a une marche aleatoire. Nous proposons un modele phenomenologique simple qui reproduit bien les resultats des simulations. Ces calculs nous ont aussi permis de montrer que la diffusion obeit a la loi de Meyer-Neldel. Cette loi stipule que, pour un processus active, le prefacteur augmente exponentiellement avec la barriere. En plus, ce travail permet de clarifier l'origine physique de cette loi. En comparant les resultats dynamiques aux resultats statiques, on se rend compte que la barriere extraite des calculs dynamiques est essentiellement la meme que celle obtenue par une approche statique, beaucoup plus simple. On peut donc obtenir cette barriere a l'aide de methodes plus precises, i.e., ab initio, comme la theorie de la fonctionnelle de la densite, qui sont aussi malheureusement beaucoup plus lourdes. C'est ce que nous avons fait pour plusieurs systemes metalliques. Nos resultats avec cette derniere approche se comparent tres bien aux resultats experimentaux. Nous nous sommes attardes plus longuement a la surface (111) du platine. Cette surface regorge de particularites interessantes, comme la forme d'equilibre non-hexagonale des i lots et deux sites d'adsorption differents pour l'adatome. De plus, des calculs ab initio precedents n'ont pas reussi a confirmer la

  16. Etude sur les tendons en materiaux composites et leur application aux ancrages postcontraints

    Science.gov (United States)

    Chennouf, Adil

    L'objectif general de la presente these est d'evaluer le comportement a l'arrachement et au fluage d'ancrages injectes constitues de tendons en materiaux composites afin d'etablir des recommandations plus appropriees et realistes pour le dimensionnement et la conception. Quatre types de tendons en materiaux composites, deux a base de fibres d'aramide et deux a base de fibres de carbone, ont ete utilises dans l'etude. Les travaux de recherche de cette these ont porte notamment sur: (I) Une caracterisation physique et mecanique des tendons en materiaux composites utilises dans l'etude. (II) Une etude en laboratoire sur les coulis de scellement. La premiere etape de cette etude a concerne le developpement d'un coulis de scellement performant adapte aux tendons en materiaux composites et a differentes situations d'injection. La seconde etape a traite des essais de caracterisations physique et mecanique du coulis de scellement developpe comparativement a trois coulis de scellement usuels d'un meme rapport E/L de 0,4. (III) Une etude sur des modeles reduits d'ancrages injectes. (IV) Une etude sur des modeles d'ancrages a grande echelle. La synthese de ces etudes a permis d'enoncer les principales conclusions suivantes: (1) Les valeurs moyennes des charges de rupture des tendons en materiaux composites ont ete de 1% a 29% superieures a celles specifiees par les manufacturiers. (2) L'etude sur les coulis de scellement a permis le developpement de coulis de ciment repondant aux criteres fixes, soient une grande stabilite, une bonne fluidite, une legere expansion et de bonnes caracteristiques mecaniques. (3) Les tendons en materiaux composites ont montre des contraintes d'adherence maximum superieures a celles des tendons en acier. (4) Le type de fibre, la configuration et le fini de surface des tendons en materiaux composites gouvernent leur resistance a l'adherence. (5) L'introduction de sable et d'autres ajouts comme les fines de silice et la poudre d'aluminium au coulis

  17. L’accès aux ressources d’une formation guidé par des ontologies

    Directory of Open Access Journals (Sweden)

    Dominique Fontaine

    2006-01-01

    Full Text Available Beaucoup de ressources sont mises à contribution pour supporter une formation de type e-learning. L’un des objectifs du projet MEMORAe est de rendre ces ressources plus accessibles aux apprenants. Ce projet propose une approche fondée sur une mémoire organisationnelle de l’ensemble des notions et des ressources de la formation. Un principe est d’indexer ces ressources sur les concepts d’ontologie. Nous décrivons les moyens déployés à cette fin. Nous présentons les scénarios par lesquels les apprenants accèdent aux connaissances en parcourant ces ontologies. Enfin, nous illustrons notre propos à l’aide de deux applications actuellement mises en place en université.

  18. Former aux TICE : entre compétences techniques et modèles pédagogiques

    Directory of Open Access Journals (Sweden)

    Jacques Béziat

    2012-01-01

    Full Text Available Cette contribution discute des enjeux et des limites d’une formation aux compétences techniques attendues des futurs enseignants d’école primaire. Une formation est certainement nécessaire pour espérer voir des pratiques pédagogiques avec les TICE se développer en classe. Mais ce n’est qu’un des leviers pour leur intégration dans les pratiques scolaires. Une formation aux TICE suppose que l’on mette l’accent sur l’analyse de pratiques. Plus que de former « simplement » à l’usage pédagogique d’outils numériques, il est indispensable de former à la complexité de leurs enjeux intellectuels et pratiques.

  19. 思南公馆酒店Aux Jardins Massenet法餐厅,呈现全新美味

    Institute of Scientific and Technical Information of China (English)

    2013-01-01

    AuxJardinsMassenet位于上海思南公馆酒店57号,坐拥精致花园,悦享自然景致。店名AuxJardins是法文“花园”的意思。与思南公馆酒店的气质不谋而合。餐厅完美传承了法国大餐的精致,并创新性地融合了巴黎、普罗旺斯、阿尔萨斯等地的佳肴特色,带来非同凡响的摩登法国风情。每季更会依据季节变化,烹饪全新菜式,打造饕餮盛宴。

  20. Optimisation des systèmes multi-antennes appliqués aux systèmes MC -CDMA

    OpenAIRE

    BENYAROU, MOURAD

    2014-01-01

    Aujourd’hui les systèmes MIMO sont devenus un des sujets les plus étudiés en recherche, car ils sont capables d’augmenter l’efficacité spectrale (capacité) sur une largeur de bande limitée. L’aptitude des systèmes multi-antennes à résister aux évanouissements et aux interférences constitue par ailleurs un avantage supplémentaire indéniable. Les avantages des systèmes MIMO vont cependant bien au-delà de ceux des antennes intelligentes. Le fait de placer des antennes des deux côt...

  1. La politique européenne d’aide à la mise aux normes de qualité

    Directory of Open Access Journals (Sweden)

    Vialatte Philippe

    2001-05-01

    Full Text Available La Commission européenne peut aider les pays en développement à financer des programmes de mise aux normes de qualité pour contribuer à la lutte contre la pauvreté, améliorer les conditions de vie des populations locales et leur permettre de bénéficier encore plus largement des opportunités offertes par le marché européen.

  2. À propos de Pierre Brossolette, " Hommage aux morts de la France combattante ", Albert Hall de Londres, 18 juin 1943

    OpenAIRE

    2010-01-01

    En rendant un hommage passionné aux morts de la France Combattante, le 18 juin 1943 à l'Albert Hall de Londres, Pierre Brossolette s'efforce de mobiliser les " Français de Grande-Bretagne " (c'est-à-dire, rappelons-le, un auditoire qui dépasse la seule France Combattante) au service de l'entreprise gaullienne et, plus largement, de la rénovation à venir de la France (...).

  3. Comparative Performance of the RapID Yeast Plus System and the API 20C AUX Clinical Yeast System

    OpenAIRE

    Smith, Michael B; Dunklee, Daisy; Vu, Hangna; Woods, Gail L.

    1999-01-01

    The performance of the RapID Yeast Plus System (Innovative Diagnostic Systems, Norcross, Ga.), a 4-h micropanel using single-substrate enzymatic test reactions, was compared with that of the API 20C AUX Clinical Yeast System (bioMerieux Vitek, Hazelwood, Mo.), a 48- to 72-h carbohydrate assimilation panel. Two hundred twenty-five yeasts, yeast-like fungi, and algae, comprising 28 species and including 30 isolates of Cryptococcus neoformans, an important pathogen not tested in appreciable numb...

  4. Phloem-specific expression of a melon Aux/IAA in tomato plants alters auxin sensitivity and plant development

    Directory of Open Access Journals (Sweden)

    Guy eGolan

    2013-08-01

    Full Text Available Phloem sap contains a large repertoire of macromolecules in addition to sugars, amino acids, growth substances and ions. The transcription profile of melon phloem sap contains over 1,000 mRNA molecules, most of them associated with signal transduction, transcriptional control, and stress and defense responses. Heterografting experiments have established the long-distance trafficking of numerous mRNA molecules. Interestingly, several trafficking transcripts are involved in the auxin response, including two molecules coding for auxin/indole acetic acid (Aux/IAA. To further explore the biological role of the melon Aux/IAA transcript CmF-308 in the vascular tissue, a cassette containing the coding sequence of this gene under a phloem-specific promoter was introduced into tomato plants. The number of lateral roots was significantly higher in transgenic plants expressing CmF-308 under the AtSUC2 promoter than in controls. A similar effect on root development was obtained after transient expression of CmF-308 in source leaves of N. benthamiana plants. An auxin-response assay showed that CmF-308-transgenic roots are more sensitive to auxin than control roots. In addition to the altered root development, phloem-specific expression of CmF-308 resulted in shorter plants, a higher number of lateral shoots and delayed flowering, a phenotype resembling reduced apical dominance. In contrast to the root response, cotyledons of the transgenic plants were less sensitive to auxin than control cotyledons. The reduced auxin sensitivity in the shoot tissue was confirmed by lower relative expression of several Aux/IAA genes in leaves and an increase in the relative expression of a cytokinin-response regulator, TRR8/9b. The accumulated data suggest that expression of Aux/IAA in the phloem modifies auxin sensitivity in a tissue-specific manner, thereby altering plant development.

  5. Comparison of VITEK 2 YST Card and API 20C AUX system in identification of non- albicans Candida species

    Directory of Open Access Journals (Sweden)

    Süleyman Durmaz

    2012-03-01

    Full Text Available Objectives: In the present study, it was aimed to compare results obtained by using VITEK 2 YST Card (bioMérieux, France with those obtained by using API 20C AUX (bioMérieux, France for identification of non- albicans Candida species, which was isolated from various clinical samples, at level of species.Materials and methods: Forty-one non-albicans Candida isolates, which were isolated from 28 urine, 10 blood and 3 vaginal swab specimens, and found to be negative by germ tube test, were identified by using VITEK 2 YST Card (bioMérieux, France. In addition, microscopic morphology was assessed in corn-meal Tween 80 agar, while carbohydrate assimilation was assessed by using commercially available API 20C AUX kit (bioMérieux, France.Results: Thirty-four isolates (82.9% were identified as identical species by these 2 systems, while different results were obtained in 7 isolates (17.1%. 5 isolates, identified as Candida glabrata by API 20C AUX system, were identified as Candida tropicalis (n=2, Candida krusei, Candida lipolitica and Candida kefyr by VITEK 2 YST Card. One other isolate, identified as C.tropicalis, was identified as Candida parapsilosis; and additional one isolate, identified as C.parapsilosis, was identified as C.tropicalis.Conclusion: It was concluded that one should be cautious in the identification of C.glabrata, in particular, C.tropicalis and C.parapsilosis, although between VITEK 2 YST Card and API 20C AUX system results was found largely similarity in identification of non-albicans Candida spp.

  6. Phloem-Mobile Aux/IAA Transcripts Target to the Root Tip and Modify Root Architecture

    Institute of Scientific and Technical Information of China (English)

    Michitaka Notaguchi; Shmuel Wolf; William J. Lucas

    2012-01-01

    In plants,the phloem is the component of the vascular system that delivers nutrients and transmits signals from mature leaves to developing sink tissues.Recent studies have identified proteins,mRNA,and small RNA within the phloem sap of several plant species.It is now of considerable interest to elucidate the biological functions of these potential long-distance signal agents,to further our understanding of how plants coordinate their developmental programs at the whole-plant level.In this study,we developed a strategy for the functional analysis of phloem-mobile mRNA by focusing on IAA transcripts,whose mobility has previously been reported in melon (Cucumis melo cv.Hale's Best Jumbo).Indoleacetic acid (IAA) proteins are key transcriptional regulators of auxin signaling,and are involved in a broad range of developmental processes including root development.We used a combination of vasculature-enriched sampling and hetero-grafting techniques to identify IAA18 and IAA28 as phloemmobile transcripts in the model plant Arabidopsis thaliana.Micro-grafting experiments were used to confirm that these IAA transcripts,which are generated in vascular tissues of mature leaves,are then transported into the root system where they negatively regulate lateral root formation.Based on these findings,we present a model in which auxin distribution,in combination with phloem-mobile AuxIIAA transcripts,can determine the sites of auxin action.

  7. Aux frontières poreuses des cartes palestiniennes et de l'art contemporain

    Directory of Open Access Journals (Sweden)

    Anaïs Farine

    2013-12-01

    Full Text Available Un certain nombre d'artistes contemporains palestiniens se saisissent de la carte comme motif (simple présence de carte traditionnelle dans l'espace des œuvres ou comme modèle conceptuel structurant leurs travaux. A travers l'analyse des vidéos M* of Bethlehem [Ayreen Anastas, 2003], Red, Dead and Mediterranean [Akram Al-Ashqar, 2006], et We Began by Measuring Distance [Basma Al-sharif, 2009], cet article entend étudier le déplacement des frontières artistiques ainsi que des représentations de l'espace géopolitique dans les images en mouvements palestiniennes contemporaines. En interrogeant les différents dispositifs mis en place par les trois artistes pour se réapproprier le territoire en lui donnant un sens et une unité, cet article indique que ces œuvres, parce qu'elles répondent avec une grande subtilité aux préoccupations spatiales d'une certaine mouvance de l'art contemporain, sont devenues incontournables.

  8. Cours Sécurité : Sensibilisation aux gestes et postures de travail

    CERN Multimedia

    DGS Unit

    2010-01-01

    Prochaine session le 21 octobre 2010. 12 places disponibles. Ce cours concerne toutes les personnes appelées à réaliser des manutentions manuelles dans le cadre de leurs activités. Contenu du cours : Théorie - Présentation des objectifs du programme ; - L'accident du travail (définition, coûts) ; - Statistiques CNAM ; - Notion d'anatomie (mécanique humaine) ; - Les différentes pathologies (lumbago, sciatique, hernie discale) ; - Discussion sur les problèmes particuliers rencontrés dans la vie courante. Pratique - Les efforts mécaniques sur la colonne dus aux mauvaises postures ; - Les principes de base de l'utilisation de la mécanique humaine ; - Exercices pratiques d'application (sur objets divers standards) ; - Prises de vues au caméscope des positions de chacun. Pour vous inscrire : https://edh.cern.ch/Document/Personnel/TRN?new=YES&...

  9. Shoot-supplied ammonium targets the root auxin influx carrier AUX1 and inhibits lateral root emergence in Arabidopsis

    KAUST Repository

    Li, Baohai

    2011-03-24

    Deposition of ammonium (NH4 +) from the atmosphere is a substantial environmental problem. While toxicity resulting from root exposure to NH4 + is well studied, little is known about how shoot-supplied ammonium (SSA) affects root growth. In this study, we show that SSA significantly affects lateral root (LR) development. We show that SSA inhibits lateral root primordium (LRP) emergence, but not LRP initiation, resulting in significantly impaired LR number. We show that the inhibition is independent of abscisic acid (ABA) signalling and sucrose uptake in shoots but relates to the auxin response in roots. Expression analyses of an auxin-responsive reporter, DR5:GUS, and direct assays of auxin transport demonstrated that SSA inhibits root acropetal (rootward) auxin transport while not affecting basipetal (shootward) transport or auxin sensitivity of root cells. Mutant analyses indicated that the auxin influx carrier AUX1, but not the auxin efflux carriers PIN-FORMED (PIN)1 or PIN2, is required for this inhibition of LRP emergence and the observed auxin response. We found that AUX1 expression was modulated by SSA in vascular tissues rather than LR cap cells in roots. Taken together, our results suggest that SSA inhibits LRP emergence in Arabidopsis by interfering with AUX1-dependent auxin transport from shoot to root. © 2011 Blackwell Publishing Ltd.

  10. Comparative performance of Fungichrom I, Candifast and API 20C Aux systems in the identification of clinically significant yeasts.

    Science.gov (United States)

    Gündeş, S G; Gulenc, S; Bingol, R

    2001-12-01

    To compare the performance of current chromogenic yeast identification methods, three commercial systems (API 20C Aux, Fungichrom I and Candifast) were evaluated in parallel, along with conventional tests to identify yeasts commonly isolated in this clinical microbiology laboratory. In all, 116 clinical isolates, (68 Candida albicans, 12 C. parapsilosis, 12 C. glabrata and 24 other yeasts) were tested. Germ-tube production, microscopical morphology and other conventional methods were used as standards to definitively identify yeast isolates. The percentage of isolates identified correctly varied between 82.7% and 95.6%. Overall, the performance obtained with Fungichrom I was highest with 95.6% identification (111 of 116 isolates). The performance of API 20C Aux was higher with 87% (101 of 116 isolates) than that of Candifast with 82.7% (96 of 116). The Fungichrom I method was found to be rapid, as 90% of strains were identified after incubation for 24 h at 30 degrees C. Both of the chromogenic yeast identification systems provided a simple, accurate alternative to API 20C Aux and conventional assimilation methods for the rapid identification of most commonly encountered isolates of Candida spp. Fungichrom seemed to be the most appropriate system for use in a clinical microbiology laboratory, due to its good performance with regard to sensitivity, ease of use and reading, rapidity and the cost per test.

  11. Proposition d'attribution de deux contrats pour la fourniture de fils supraconducteurs destines aux aimants de correction du LHC

    CERN Document Server

    1999-01-01

    Le présent document concerne l'attribution de deux contrats pour la fourniture de fils supraconducteurs émaillés de quatre types différents (fil 1, fil 2, fil 3 et fil 4) destinés aux aimants de correction du LHC. Un appel d'offres (IT-2649/LHC/LHC) a été adressé le 13 juillet 1999 à quatre entreprises dans quatre Etats membres, trois entreprises au Japon et trois entreprises aux Etats-Unis. A la date de clôture, le CERN avait reçu cinq offres. Il est demandé au Comité des finances d'approuver la négociation de deux contrats: 1. d'une part avec IGC (USA) pour la fourniture de fils supraconducteurs 1 et 2 destinés aux aimants de correction du LHC pour un prix total net de 996 074 dollars des Etats-Unis, non révisable, avec une option pour la fourniture de fils 1 et 2 supplémentaires représentant 20% de la quantité initiale pour un prix total net de 199 215 dollars des Etats-Unis, révisable, ce qui porte le montant total à 1 195 289 dollars US, révisable pour l'option. Au taux de change in...

  12. By-law from November 6, 2003 concerning the collection of data relative to gas and electricity markets and to energy public utilities as defined in article 10 of law no. 2003-8 from January 3, 2003; Arrete du 6 novembre 2003 concernant la collecte de donnees prevue a l'article 10 de la loi no. 2003-8 du 3 janvier 2003 relative aux marches du gaz et de l'electricite et au service public de l'energie

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2004-03-01

    This by-law defines the type and periodicity (monthly and annual) of the economical data the gas and electricity operators have to supply to the general direction of energy and raw materials (energy observatory - DGEMP/OE) in order to produce reliable and consistent statistical indicators. (J.S.)

  13. Uninhabited Military Vehicles (UMVs): Human Factors Issues in Augmenting the Force (Vehicules Militaires sans Pilote (UMV): Questions Relatives aux Facteurs Humains lies a l’augmentation des Forces)

    Science.gov (United States)

    2007-07-01

    conventionnelles et aux défis des conflits asymétriques, où le succès politique et militaire repose sur le choix des objectifs et des moyens de...le transfert de commande occupent désormais le devant de la scène, aux côtés des problèmes traditionnels de Facteurs humains relatifs à la gestion

  14. Energies; Energies

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2003-07-01

    In the framework of the National Debate on the energies in a context of a sustainable development some associations for the environment organized a debate on the nuclear interest facing the renewable energies. The first part presents the nuclear energy as a possible solution to fight against the greenhouse effect and the associated problem of the wastes management. The second part gives information on the solar energy and the possibilities of heat and electric power production. A presentation of the FEE (French wind power association) on the situation and the development of the wind power in France, is also provided. (A.L.B.)

  15. On directly measuring relative Fermi energies of noble metals and their alloys

    Science.gov (United States)

    Kleiman, G. G.; Sundaram, V. S.; Rogers, J. D.

    1981-09-01

    We present the first evidence of direct measurement of relative Fermi energies in alloys and between pure metals. From applying the "atomic" concept of core hole final state screening, the Auger energy shift of noble metal A equals EFA- EF( x). High resolution Auger shifts in P1- xtCux, AuxCu1- x and AuxAg1- x demonstrate experimental verification of this simple relation. We find E FCuE FAu ≅ - 0.2 eV, and E FPt ≅ E FCu and E FAg ≅ E FAu.

  16. Benefícios auxílio-doença concedidos aos trabalhadores empregados no ramo de carne e pescado no Brasil em 2008

    Directory of Open Access Journals (Sweden)

    Heinz Roland Jakobi

    2015-01-01

    Full Text Available Este estudo objetivou identificar fatores associados à incidência de concessão de benefícios entre trabalhadores na atividade de carne e pescado no Brasil. Foram estudados os benefícios auxílio-doença concedidos pela Previdência Social aos empregados em carne e pescado no Brasil em 2008. As incidências por 10 mil vínculos empregatícios foram estratificadas por sexo, idade, diagnóstico, atividade econômica, unidade federada, espécie e duração dos benefícios auxílio-doença. Foram concedidos 31.913 benefícios auxílio-doença, com incidência de 788,7. O ramo abate de bovinos, equinos, ovinos e caprinos apresentou a maior incidência (1.223,2; o pescado, a maior duração (61 dias de benefícios auxílio-doença. As mulheres apresentaram maior incidência, enquanto os homens, maior duração de benefícios auxílio-doença. Os grupos Lesões, doenças osteomusculares e transtornos mentais representaram 67,2% dos benefícios auxílio-doença. Os diagnósticos mais incidentes foram as dorsopatias, hemorragia no início da gravidez e episódios depressivos. O ramo de atividade, sexo, e a idade representaram importantes fatores associados à incidência de benefícios auxílio-doença, sugerindo uma precarização das condições/relações de trabalho.

  17. Expression of wild-type PtrIAA14.1, a poplar Aux/IAA gene causes morphological changes in Arabidopsis

    Directory of Open Access Journals (Sweden)

    Shanda eLiu

    2015-06-01

    Full Text Available Aux/IAA proteins are transcriptional repressors that control auxin signaling by interacting with Auxin Response Factors (ARFs. So far all of the identified Aux/IAA mutants with auxin-related phenotypes in Arabidopsis and rice (Oryza sativa are dominant gain-of-function mutants, with mutantions in Domain II that affected stability of the corresponding Aux/IAA proteins. On the other hand, morphological changes were observed in knock-down mutants of Aux/IAA genes in tomato (Solanum lycopersicum, suggesting that functions of Aux/IAA proteins may be specific for certain plant species. We report here the characterization of PtrIAA14.1, a poplar (Populus trichocarpa homologue of IAA7. Bioinformatics analysis showed that PtrIAA14.1 is a classic Aux/IAA protein. It contains four conserved domains with the repressor motif in Domain I, the degron in Domain II, and the conserved amino acid signatures for protein-protein interactions in Domain III and Domain IV. Protoplast transfection assays showed that PtrIAA14.1 is localized in nucleus. It is unable in the presence of auxin, and it represses auxin response reporter gene expression. Expression of wild type PtrIAA14.1 in Arabidopsis resulted in auxin-related phenotypes including down-curling leaves, semi-draft with increased number of branches, and greatly reduced fertility, but expression of the Arabidopsis Aux/IAA genes tested remain largely unchanged in the transgenic plants. Protein-protein interaction assays in yeast and protoplasts showed that PtrIAA14.1 interacted with ARF5, but not other ARFs. Consistent with this observation, vascular patterning was altered in the transgenic plants, and the expression of AtHB8 (Arabidopsis thaliana Homeobox Gene 8 was reduced in transgenic plants.

  18. Evaluation of the radiology state at the CEA/Fontenay-aux-Roses and its environment; Point sur l'etat radiologique du CEA/Fontenay-aux-Roses et de son environnement

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2000-10-01

    Since 1946 the nuclear installations followed one other at the CEA of Fontenay-aux-Roses still their gradual stop the last ten years, except two installations INB34 and INB73, necessary for the wastes management. Today these installations form the subject of a drainage program. The public opinion is regularly informed on this program since 1999. This document presents the stock of the actions realized since this date: the track keeping of the sites activities impacts on the environment and the actions realized since 1999. (A.L.B.)

  19. Interactions entre les bacteries et les algues dans une culture continue de phytoplancton naturel soumise aux conditions exterieures

    OpenAIRE

    Gauthier, M; Martin, Y; Lelong, P; Breittmayer, V

    1984-01-01

    Au cours d'une expérience de culture continue de phytoplancton marin en grand volume soumise aux conditions extérieures, des tests microbiologiques et biochimiques ont été effectués pour mettre en évidence la production de substances antibactériennes et antialgales par les algues unicellulaires. De nombreux paramètres ont été mesurés pour caractériser la croissance de ces algues (qualitativement et quantitativement) et des bassin expérimental et dans la biomasse à différents stades de la cult...

  20. 11 septembre 2001 - 11 janvier 2002 / cent vingt jours d'atteintes aux libertés immuables

    OpenAIRE

    2005-01-01

    La fédération internationale des ligues des droits de l'homme, Human rights watch et reporters sans frontières viennent de publier un état des lieux des mesures sécuriatires prises dans les différents Etats après les attentats du 11 septembre. 11 SEPTEMBRE 2001 - 11 JANVIER 2002 / CENT VINGT JOURS D'ATTEINTES AUX LIBERTÉS IMMUABLES 11 janvier 2002 Télécharger le rapport Cent vingt jours environ après les attaques terroristes de New York et Washington, il nous semblait opportun que libertes...

  1. Accès aux données dans les systèmes d'information pervasifs

    OpenAIRE

    Delot, Thierry

    2009-01-01

    Le développement des réseaux sans fil et des dispositifs mobiles (ordinateurs portables, PDA communicants, capteurs, etc.) constaté ces dernières années entraine de profondes mutations des applications et des services proposés aux utilisateurs. Nous entrons aujourd'hui dans l'ère de l'informatique pervasive avec pour enjeu de proposer des services et de rendre les données disponibles n'importe où et n'importe quand. Le système d'information n'échappe pas à cette évolution et devient lui aussi...

  2. Du "non-public" d’un Centre de culture scientifique aux appropriations des sciences et techniques

    OpenAIRE

    Urbas, Boris

    2011-01-01

    National audience; Dans le cadre d'une recherche de doctorat, nous abordons la place et l'image du musée parmi d'autres pratiques culturelles consacrées aux sciences et tech- niques, dans le quotidien des publics et des « non-publics » de la structure. En proposant une analyse centrée sur les publics individuels des expositions mais aussi des manifestations hors-les-murs, nous nous interrogeons sur les formes d'appropriations non-formelles et informelles des sciences et techniques, et sur la ...

  3. Le recours aux archives judiciaires pour étudier les habitudes de sommeil

    Directory of Open Access Journals (Sweden)

    Guillaume Garnier

    2009-10-01

    Full Text Available Les archives judiciaires possèdent de nombreux attraits, et certains sont parfois insoupçonnés. Les faits relatés dans les actes d’accusation par exemple, mais aussi les déclarations de témoins recèlent de petits détails sur les habitudes de sommeil qui passent souvent inaperçus aux yeux des historiens. Dans un corpus très large (du XVIIIe au xixe siècle on peut ainsi tenter de comprendre les logiques de sommeil : heures de coucher et lever, durée du sommeil, l’apparente vulnérabilité du repos nocturne, les déviances nocturnes, le lieu de sommeil. Mais dans une vue plus globale, les archives aident aussi à déterminer les rythmes nocturnes et notamment la place qu’y tient le sommeil. Les contraintes sociales et politiques, la dureté du travail et de la vie, l’importance de la religion transparaissent aussi pour former une culture spécifique du sommeil préindustriel.Judiciary records have many appealing aspects, some of which one would not suspect. What is related in indictment documents for instance, as well as in evidence statements, contains small details about sleeping habits that often go unnoticed by historians. Out of a very large corpus (from the xviiith till the xixth century, one can try and work out the rationale behind sleep: at what time people go to sleep or wake up, for how long, how vulnerable night sleep seems to be, nocturnal deviances, or where people sleep. But to a larger extent, records also help to determine nocturnal rhythms and more specifically the place that sleep holds in them. Social and political constraints, harshness of working and living conditions, the importance of religion, all show through and convey a specific culture of pre-industrial sleep.

  4. Genome-wide survey of Aux/IAA gene family members in potato (Solanum tuberosum): Identification, expression analysis, and evaluation of their roles in tuber development.

    Science.gov (United States)

    Gao, Junpeng; Cao, Xiaoli; Shi, Shandang; Ma, Yuling; Wang, Kai; Liu, Shengjie; Chen, Dan; Chen, Qin; Ma, Haoli

    2016-03-04

    The Auxin/indole-3-acetic acid (Aux/IAA) genes encode short-lived nuclear proteins that are known to be involved in the primary cellular responses to auxin. To date, systematic analysis of the Aux/IAA genes in potato (Solanum tuberosum) has not been conducted. In this study, a total of 26 potato Aux/IAA genes were identified (designated from StIAA1 to StIAA26), and the distribution of four conserved domains shared by the StIAAs were analyzed based on multiple sequence alignment and a motif-based sequence analysis. A phylogenetic analysis of the Aux/IAA gene families of potato and Arabidopsis was also conducted. In order to assess the roles of StIAA genes in tuber development, the results of RNA-seq studies were reformatted to analyze the expression patterns of StIAA genes, and then verified by quantitative real-time PCR. A large number of StIAA genes (12 genes) were highly expressed in stolon organs and in during the tuber initiation and expansion developmental stages, and most of these genes were responsive to indoleacetic acid treatment. Our results suggested that StIAA genes were involved in the process of tuber development and provided insights into functional roles of potato Aux/IAA genes.

  5. PROPOSITION D'UN MODELE DE L'EFFICACITE DU CO-COMMISSARIAT AUX COMPTES DANS LES SOCIETES ANONYMES COTEES FRANÇAISES

    OpenAIRE

    Jeannette Bennecib

    2002-01-01

    Si le commissariat aux comptes est une institution reconnue par un large public, le co-commissariat aux comptes semble ignoré. Dans un contexte de remise en cause de la crédibilité des informations financières et de l'opinion de l'auditeur, nous nous interrogeons sur l'efficacité d'un double contrôle dans les SA cotées françaises. A partir du cadre conceptuel normatif de l'efficacité du cocommissariat aux comptes, nous proposons un modèle explicatif fondé sur le principe d'indépendance en app...

  6. L'intolérance environnementale idiopathique attribuée aux champs électromagnétiques (IEI-EMF)

    OpenAIRE

    Demaret, Isabelle

    2014-01-01

    Depuis le début des années '80, des chercheurs étudient les plaintes des personnes se disant hypersensibles aux champs électromagnétiques (EMF), sous les normes recommandées. Les recherches n'ont cependant pas démontré que ces personnes étaient capables de détecter les EMF ni qu'elles présentaient des changements physiologiques en étant exposées aux EMF . L'OMS a regroupé ces plaintes sous le nom d'Intolérance Environnementale Idiopathique attribuée aux Champs Electromagnétiques (IEI-EMF). Au...

  7. L'inégalité des territoires insulaires de la Caraïbe face aux menaces volcaniques

    Directory of Open Access Journals (Sweden)

    Thierry Lesales

    2008-02-01

    Full Text Available Les îles de la Caraïbe orientale sont particulièrement exposées aux éruptions volcaniques. L’ensemble des Petites Antilles comprend en effet une vingtaine de volcans actifs, aux styles éruptifs parmi les plus dangereux et destructeurs. La définition de facteurs de vulnérabilité autorise des comparaisons et un classement des îles en fonction de leur niveau d’exposition. Cette approche permet d’attirer l’attention sur la nécessité d’une gestion proactive des risques volcaniques en contexte insulaireThe Eastern Caribbean islands are particularly exposed to volcanic eruptions. The Lesser Antilles arc indeed includes a score of active volcanoes, whose eruptive styles are among the most dangerous and destructive. The definition of vulnerability factors leads to some comparisons and a classification of the islands according to their level of exposure. This approach draws the attention to the imperative need for a proactive management of the volcanic risks in this insular context.

  8. Etude sur les non-usagers d'Internet : analyse de la perception des TIC et du rapport aux médias

    OpenAIRE

    Boudokhane-Lima, Feirouz

    2012-01-01

    International audience; Ce travail s’inscrit dans le cadre de la problématique du non-usage. En sciences de l’information et de la communication, cette question reste peu étudiée par rapport aux recherches abondantes sur les usages. Cet article présente une étude sur les non-usagers d’Internet sans chercher à les rattacher à un portrait-type. Notre travail a en effet pour objet l’analyse du rapport des non-usagers d’Internet aux autres TIC (ordinateur, téléphone portable, appareils numériques...

  9. Project of law, adopted by the Senate, giving permission to the approval of the agreement between the French government and the international organization for thermonuclear fusion energy ITER, relative to the head office of ITER organization and to the privileges and immunities of ITER organization in the French territory; Projet de loi adopte par le Senat, autorisant l'approbation de l'accord entre le Gouvernement de la Republique francaise et l'Organisation internationale ITER pour l'energie de fusion relatif au siege de l'Organisation ITER et aux privileges et immunites de l'Organisation ITER sur le territoire francais

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2008-01-15

    The will of building up an international thermonuclear experimental reactor (ITER) gathers since several years the European community of atomic energy (Euratom), Japan, the USA, and Russia, next followed by China, South Korea and, since 2005, by India. The agreement signed in Paris between these seven parties on November 21, 2006 entrusted the international organization ITER with the realization of this project. The implications of the ITER project are enormous both in their scientific and in their economical aspects. France has a particular position in this project since the head office of ITER organisation is sited at Saint-Paul-lez-Durance and the tokamak will be built at Cadarache. Therefore, an agreement has been signed between ITER organization and the French government. The approval of this agreement is the object of this project of law made of a single article. The agreement between the French government and the international organization ITER is attached to the document. It defines the juridical status, the privileges and immunities of the organization itself and of its personnel inside the French territory. An appendix to the agreement precises the cooperation modalities between the French authorities and ITER organization. (J.S.)

  10. Atlani-Duault Laëtitia, Vidal Laurent, ss. Dir., Anthropologie de l’aide humanitaire et du développement. Des pratiques aux savoirs, des savoirs aux pratiques

    Directory of Open Access Journals (Sweden)

    Gilles Ferréol

    2010-10-01

    Full Text Available L’anthropologie, rappelle d’entrée de jeu Laëtitia Atlani-Duault, fait partie, aux côtés d’autres disciplines comme l’économie, la sociologie, la démographie ou encore la géographie, de la panoplie des outils mobilisés par les professionnels du développement et de l’aide humanitaire. Comme le souligne Jean Copans dans sa préface, un tel éclairage, « transversal par nécessité » et « politique au bon sens du terme », s’efforce de « relier le micro au macro » tout en « pratiquant le comparatisme...

  11. Contribution to the study of {pi}{sup -} + p {yields} {pi}{sup 0} + n and {pi}{sup -} + p {yields} {pi}{sup 0} + {pi} + n reactions at the energies of the maxima of the {pi}-nucleon interaction in the T = 1/2 state total cross section; Contribution a l'etude des reactions {pi}{sup -} + p {yields} {pi}{sup 0} + n et {pi}{sup -} + p {yields} {pi}{sup 0} + n aux energies des maxima de la section efficace totale de l'interaction {pi}{sup -} nucleon dans l'etat de spin isobarique T = 1/2

    Energy Technology Data Exchange (ETDEWEB)

    Turlay, R. [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1962-07-01

    In the first part of this experiment, we determined the total cross section for processes yielding only neutral particles, from 300 to 1600 MeV. For this, we counted the number of incident {pi}{sup -}, as defined by a counter telescope, which interact in a liquid-hydrogen target without giving charged particles in a 4{pi} counter surrounding the target. In the second part of this experiment, we have separated the reaction {pi}{sup -} p {yields} {pi}{sup 0} n and {pi}{sup -} p {yields} {pi}{sup 0} {pi}{sup 0} n between 300 and 1100 MeV, by supposing that only these two reactions was realized by placing lead absorbers between the target and 4{pi} counter and by comparing the counting rate for neutral events with and without lead. The transmission thus measured is a function of the average number of photons produced and therefore of the ratio between the two neutral channels, {pi}{sup 0} n and {pi}{sup 0} {pi}{sup 0} n. In the last section of this work, we discuss the experimental results and compare them to those obtained by other authors in the study of photoproduction and the {pi}-nucleon interaction. (author) [French] Dans une premiere partie de cette experience, nous determinons la section efficace totale des processus ne donnant naissance qu'a des particules neutres de 300 et 1 600 MeV. Pour cela nous comptons le nombre de {pi}{sup -}, defini par un telescope incident, qui interagissent dans une cible d'hydrogene liquide sans donner de particules chargees dans un compteur 4{pi} entourant cette cible. Dans la deuxieme partie de l'experience nous avons separe les reactions {pi}{sup -} p {yields} {pi}{sup 0} n et {pi}{sup -} p {yields} {pi}{sup 0} {pi}{sup 0} n entre 300 et 1 600 MeV en supposant que seules ces deux voies soient importantes a ces energies. La separation de ces deux reactions a ete realisee en placant des ecrans de plomb entre la cible et le compteur 4 {pi}, et en comparant les traces de comptage des evenements a secondaires neutres

  12. Sur la commande tolérante aux défauts des machines asynchrones : Une approche implicite

    OpenAIRE

    Benzineb, Omar; Tadjine, Mohamed; Benbouzid, Mohamed; Diallo, Demba

    2012-01-01

    International audience; Dans cet article, deux approches de commande tolérante aux défauts (FTC Fault-Tolerant Control) sont étudiées et appliquées à la machine asynchrone. Dans ce contexte, la phase de détection et d'isolation du défaut est décalée par rapport à la phase de reconfiguration de la commande. Celle-ci est réalisée en testant l'état d'un modèle interne qui s'active automatiquement dès l'apparition d'un défaut pour compenser son effet. Cet effet peut être convenablement modélisé p...

  13. Les ecarts de financement en matiere d'adaptation aux changements climatiques - avec la perspective des CPDN

    DEFF Research Database (Denmark)

    Olhoff, Anne; Bee, Skylar; Puig, Daniel

    En 2014, le Programme des Nations Unies pour l’Environnement (PNUE) a publié son premier rapport sur les écarts entre besoins et perspectives en matière d’adaptation (AGR 2014) (PNUE, 2014), lequel a permis de poser un cadre préliminaire pour évaluer ces écarts et d’établir une évaluation......). Elle comprend les principales conclusions concernant les coûts et les financements de l’adaptation aux changements climatiques du rapport AGR 2014 du PNUE ainsi que les conclusions préliminaires de l’évaluation de 2016. De plus, elle s’appuie sur les réflexions concernant les coûts de l’adaptation et...

  14. PHOSPHONYLATION DES COMPOSES A LIAISONS C=X : ACCES AUX Bis-PHOSPHONATES ET ETUDES DE LEURS DE LEURS FONCTIONNALISATIOS.

    OpenAIRE

    EPENIT, MONDJO RODY-DAVY

    2014-01-01

    Dans ce travail, consacré aux bis-phosphonates et iminophosphonates, nous avons tout d'abord, commencé par reproduire un travail sur les bis-phosphonates. Cette opération est bien réussie. Nous avons amélioré cette méthode, en utilisant un processus avec un minimum d'étape. Elle consiste à utiliser les ?-aminoacides sans recours à la protection. Ceci nous fait gagner deux étapes, puisque nous n'aurons pas à débloquer en fin de réaction. C'est à partir de cette méthode que la suite de nos trav...

  15. Une méthode de production de truites fario destinées aux repeuplements de restauration

    Directory of Open Access Journals (Sweden)

    MAISSE G.

    1981-01-01

    Full Text Available Une méthode de production de populations de truites fario présentant une forte variabilité génétique est proposée pour les repeuplements de restauration. Du sperme de géniteurs sauvage est conservé à des températures voisines de 0° C et à l'obscurité, pendant la durée du transport entre le cours d'eau d'origine et la pisciculture, où l'on procède à l'insémination d'ovules de truites fario d'élevage en utilisant le dilueur de sperme 532. La descendance est destinée de préférence aux déversements au stade oeuf dans le milieu préalablement restauré.

  16. Pollution durable des sols par la chlordécone aux Antilles : comment la gérer ?

    OpenAIRE

    Cabidoche, Yves-Marie; Lesueur-Jannoyer, Magali

    2011-01-01

    La chlordécone, insecticide organochloré de synthèse, était utilisée dans les bananeraies antillaises avant 1993. Pourtant, elle contamine encore les ressources en eau, certaines denrées, et des organismes aquatiques. Très tôt, la recherche agronomique s’est mobilisée pour répondre aux questions posées pour la gestion de cette crise : Où sont les sols pollués? Est-ce une pollution durable ? La molécule est peu mobile. Des cartes de risques, fondées sur leur occupation rétrospective en bananer...

  17. Des mots en politique Liberté de la presse, des Lumières aux Trois Glorieuses

    OpenAIRE

    Steuckardt, Agnès

    2008-01-01

    « La liberté de la presse se porte mal. Le Rapport annuel 2002 de Reporters sans frontières est sans appel : l’ensemble des chiffres est en augmentation par rapport à l’année précédente. Aujourd’hui, 106 journalistes sont emprisonnés dans le monde » : le discours contemporain pose une équivalence implicite entre la liberté de la presse et le sort fait aux journalistes, et, pour le lecteur, la geôle du journaliste représente une sorte de prototype inversé de l’expression liberté de la presse. ...

  18. The Politics of Religion in the United States Manifestations politiques de la religion aux États-Unis

    Directory of Open Access Journals (Sweden)

    Josef Braml

    2011-04-01

    Full Text Available Aux États-Unis, les attitudes religieuses ont plus d’influence sur les choix politiques que dans n’importe quelle autre démocratie occidentale. L’engagement religieux/moral de la droite chrétienne polarise les États-Unis, ce qui a des conséquences sur le plan électoral mais aussi sur les choix politiques réels. L’importance de la droite chrétienne dans la coalition électorale du Parti républicain oblige celui-ci à mettre l’accent sur les questions liées à la sécurité nationale, en particulier la lutte anti-terroriste, afin de mieux souder une coalition électorale hétérogène.

  19. Marketers as Innovators: how ethnic marketing revisits ethnicity Marketing ethnique et innovation aux États-Unis

    Directory of Open Access Journals (Sweden)

    Marie-Christine Pauwels

    2009-10-01

    Full Text Available L’innovation aux États-Unis est ici vue sous un angle social et culturel. Il ne s’agit plus d’étudier l’innovation technologique, mais l’innovation en matière de produit. L’article aborde la création de valeur à travers la variable ethnique dans le domaine de la vente, du marketing et de la publicité. Les nouvelles tendances en matière d’ethno-marketing sont analysées, en particulier la manière dont les professionnels utilisent la notion d’ethnicité pour vendre des produits de consommation courante à un marché de consommateurs de plus en plus exigeants, soit en ayant recours à une segmentation de ces consommateurs en micro-marchés toujours plus étroits, soit en privilégiant un marketing multi- ou trans-culturel.

  20. Etude de la microstructure d'un acier 316 titane apres vieillissement et apres irradiation aux neutrons

    Science.gov (United States)

    Brun, G.; Le Naour, J.; Vouillon, M.

    1981-10-01

    La précipitation qui se produit lors de vieillissements de longue durée entre 450 et 700°C dans un acier 316 Ti soit hypertrempé soit écroui, a été étudiée en couplant les techniques de microscopic électronique et de microanalyse X. Pour les cas expérimentaux étudiés, les résultats obtenus montrent que la composition des carbures M 23C 6 et des phases σ, Laves et χ est peu sensible aux conditions de vieillissement et dépend également peu de l'état structural initial. Leur teneur en éléments principaux de l'alliage est d'ailleurs voisine de celle des phases précipitées dans l'acier non stabilisé. Excepté les carbures de type M 6C, toutes ces phases ont une teneur en nickel inférieure à celle de la matrice. Les premiers rérultats obtenus sur des matériaux irradiés aux neutrons montrent que la précipitation sous flux est différente de celle qui se produit dans l'acier vieilli. Les phases γ' et G ainsi que les carbures riches en nickel ont été observés. L'attention a été attirée sur le fait qu'il n'y a pas de corrélation simple entre la vitesse de gonflement et la teneuer résiduelle en nickel de la matrice.

  1. Diversification and expression of the PIN, AUX/LAX and ABCB families of putative auxin transporters in Populus

    Directory of Open Access Journals (Sweden)

    Nicola eCarraro

    2012-02-01

    Full Text Available Intercellular transport of the plant hormone auxin is mediated by three families of membrane-bound protein carriers, with the PIN and ABCB families coding primarily for efflux proteins and the AUX/LAX family coding for influx proteins. In the last decade our understanding of gene and protein function for these transporters in Arabidopsis has expanded rapidly but very little is known about their role in woody plant development. Here we present a comprehensive account of all three families in the model woody species Populus, including chromosome distribution, protein structure, quantitative gene expression, and evolutionary relationships. The PIN and AUX/LAX gene families in Populus comprise 16 and 8 members respectively, and show evidence for the retention of paralogs following a relatively recent whole genome duplication. There is also evidence for differential expression across tissues within many gene pairs. The ABCB family is previously undescribed in Populus and includes 20 members, showing a much deeper evolutionary history including both tandem and whole genome duplication as well as probable loss. A striking number of these transporters are expressed in developing Populus stems and we suggest that evolutionary and structural relationships with known auxin transporters in Arabidopsis can point toward candidate genes for further study in Populus. This is especially important for the ABCBs, which is a large family and includes members in Arabidopsis that are able to transport other substrates in addition to auxin. Protein modeling, sequence alignment and expression data all point to ABCB1.1 as a likely auxin transport protein in Populus. Given that basipetal auxin flow through the cambial zone shapes the development of woody stems, it is important that we identify the full complement of proteins involved in this process. This work should lay the foundation for studies targeting specific proteins for functional characterization and in situ

  2. The auxin transporter, OsAUX1, is involved in primary root and root hair elongation and in Cd stress responses in rice (Oryza sativa L.).

    Science.gov (United States)

    Yu, ChenLiang; Sun, ChenDong; Shen, Chenjia; Wang, Suikang; Liu, Fang; Liu, Yan; Chen, YunLong; Li, Chuanyou; Qian, Qian; Aryal, Bibek; Geisler, Markus; Jiang, De An; Qi, YanHua

    2015-09-01

    Auxin and cadmium (Cd) stress play critical roles during root development. There are only a few reports on the mechanisms by which Cd stress influences auxin homeostasis and affects primary root (PR) and lateral root (LR) development, and almost nothing is known about how auxin and Cd interfere with root hair (RH) development. Here, we characterize rice osaux1 mutants that have a longer PR and shorter RHs in hydroponic culture, and that are more sensitive to Cd stress compared to wild-type (Dongjin). OsAUX1 expression in root hair cells is different from that of its paralogous gene, AtAUX1, which is expressed in non-hair cells. However, OsAUX1, like AtAUX1, localizes at the plasma membrane and appears to function as an auxin tranporter. Decreased auxin distribution and contents in the osaux1 mutant result in reduction of OsCyCB1;1 expression and shortened PRs, LRs and RHs under Cd stress, but may be rescued by treatment with the membrane-permeable auxin 1-naphthalene acetic acid. Treatment with the auxin transport inhibitors 1-naphthoxyacetic acid and N-1-naphthylphthalamic acid increased the Cd sensitivity of WT rice. Cd contents in the osaux1 mutant were not altered, but reactive oxygen species-mediated damage was enhanced, further increasing the sensitivity of the osaux1 mutant to Cd stress. Taken together, our results indicate that OsAUX1 plays an important role in root development and in responses to Cd stress.

  3. Electronic circuits associated to radiation detectors; Electronique associee aux detecteurs de rayonnements

    Energy Technology Data Exchange (ETDEWEB)

    Fanet, H. [CEA, 75 - Paris (France)

    1995-05-01

    This work deals with electronic circuits associated to radiation detectors. In the first part are described the different detectors used and the way the electronic pulses are treated. Then are given the mistakes sources which are the electronic noise, the thermal drifts, the electromagnetic disturbances, the stacking effects of counting rates and the input current form variation effect. In the second part are treated the energy optimal estimation and the counting optimization. In the third part are described the measure chains associated to detectors and more particularly the counting, the weak currents measure and the energy measures. (O.L.). 32 figs.

  4. CARACTERISATIONS ENERGETIQUE ET ENVIRONNEMENTALE DE LA BIOMETHANISATION PILOTE APPLIQUEE AUX DEJECTIONS ANIMALES

    Directory of Open Access Journals (Sweden)

    Y. M’SADAK

    2012-12-01

    Full Text Available This study interested in monitoring energy (quantitative and qualitative and environmental performances at various pilot digesters of animal biomass.Main results are:The combined effect of the diet and the substrate on quantitative experimental productivity of gas is in favor of poultry digesters continuously fed. The biogas produced has better potential especially in industry. The environmental evaluation virtually shows a certain interest on the depollution for industrial digester.

  5. Electronic systems associated with radiation detectors; Electronique associee aux detecteurs de rayonnements

    Energy Technology Data Exchange (ETDEWEB)

    Fanet, H. [CEA Grenoble, Dept. des Systemes pour l' Information et la Sante, DSIS, 38 (France)

    2002-07-01

    This article deals with the instrumentation used for the detection of radiations in nuclear reactors and fuel reprocessing plants. In power reactors, the control of nuclear fissions is performed with the measurement of the neutron flux emitted by the pressure vessel. In fuel reprocessing plants the quantities of nuclear material are controlled all along the process by the measurement of the neutrons and gamma photons emitted. The measurement systems use the information contained in the series of electrical pulses delivered by the detectors. The number of pulses and the particular characteristics of each pulse are the methods used in the two different classes of measurements performed in nuclear facilities. Measurement systems are particularly sensible to the signal/noise ratio which is a determining factor in the quality of measurements: 1 - sources of error and filtering of detector pulses: detectors and processing of pulses; sources of errors (electronic noise, thermal drift, electromagnetic disturbances, piling up effects, ballistic deficit); optimum estimation and filtering (optimum energy estimation, counting optimization); 2 - measurement chains associated with detectors: counting and measurement of weak currents (effect of the connection cable, effects of high counting rates, method of fluctuations and advantage of a numerical processing of the signal, measurement of weak currents, effect of radiations on electronic components); energy measurement (filter for energy measurements, design of low-noise preamplifiers, high counting rate measurements). (J.S.)

  6. Du sport aux activités physiques de loisir : des formes culturelles et sociales bigarrées

    Directory of Open Access Journals (Sweden)

    Éric Dugas

    2007-07-01

    Full Text Available L'espace ludique des formes sociales des pratiques physiques accepte maintes variations. Du jeu informel et libre aux activités physiques institutionnelles (les sports, plusieurs catégories de situations motrices, distinctes des unes des autres, jalonnent l'espace des jeux sportifs. Après avoir défini et délimité, dans un premier temps, les contours et la richesse de l'univers des pratiques physiques ludiques, nous essayons, dans un second temps de mettre au jour le type de pratiques qui coïncident le mieux aux aspirations des pratiquants du xxie siècle. On s'aperçoit actuellement que malgré l'hégémonie du sport au sein de l'espace médiatique et économique, il se dessine néanmoins une tendance forte : la prédominance d’activités physiques ludiques de plus en plus autocontrôlées qui laissent l'initiative aux pratiquants et dans lesquelles les institutions sportives ne sont plus totalement ou pas du tout maître du jeu.From sport to leisure physical activities: mixed cultural and social formsThe game space of physical activities' social forms accepts many variations. From informal and free games to institutional physical activities (sports, several motor situation categories, distinct from each other, punctuate the space of physical games. After having specified and delimited the contours and richness of the world of playful physical activities, we will try to bring to light the kind of practices which coincide best with the 21st century's players or sports (women. Currently, we can see that in spite of sport's hegemony within the media and the economic spheres, a strong tendency is becoming apparent: the predominance of more and more self-controlled playful physical activities, which leave the initiative to players and in which governing bodies are not totally or not at all in command any more.Del deporte a las actividades de ocio: una mezcolanza en las formas culturales y socialesEl espacio lúdico de las formas sociales de

  7. Le rôle politique des revues conservatrices aux Etats-Unis depuis les années 1980

    Directory of Open Access Journals (Sweden)

    Marie-Cécile Naves

    2004-09-01

    Full Text Available L’article vise à étudier, à travers l’exemple de la théorie de la « Fin de l’Histoire » de Fukuyama, en quoi la revue américaine The National Interest est, à l’instar d’autres revues conservatrices, un instrument médiatique crucial pour la diffusion de certains idéaux du Parti Républicain aux Etats-Unis depuis le milieu des années 1980. Il s’agit par là même de réfléchir aux conditions de production et de diffusion de cette théorie, dans un contexte géopolitique et intellectuel exceptionnel, celui de la fin de la guerre froide. L’évolution des liens entre intellectuels et pouvoir politique américains, avec pour enjeu, depuis le début des années 1980, la politique étrangère, sont au cœur de cette réflexion.El artículo intenta estudiar a través del ejemplo de la teoría del « Fin de la Historia » de Fukuyama, hasta que punto la revista americana The National Interest es, a semejanza de otras revistas conservadoras, un instrumento crucial para la difusión de algunos ideales del partido republicano en los estados Unidos desde mediados de los años ochenta. Se trata de reflexionar sobre las condiciones de producción y de difusión de esta teoría, en un contexto geopolítico e intelectual excepcional, el del final de la guerra fría. El centro de esta reflexión es la evolución de las relaciones entre los intelectuales y el poder político americano, teniendo como telón de fondo, la política exterior.The article aims at studying, through the example of Fukuyama’s theory of the « End of History », how the American journal The National Interest, as other conservative journals, has, since the mid 1980s, been a crucial media instrument for the dissemination of some ideals of the Republican Party. We have thus to think about the conditions of production and dissemination of this theory in an exceptional geopolitical and intellectual context – the end of the cold war. The changing links between

  8. The French Tsunami warning center for the Mediterranean and North-East Atlantic (CENtre d'ALerte aux Tsunamis, CENALT)

    Science.gov (United States)

    Schindelé, F.; Bossu, R.; Alabrune, N.; Arnoul, P.; Duperray, P.; Gailler, A.; Guilbert, J.; Hébert, H.; Hernandez, B.; Loevenbruck, A.; Roudil, P.

    2012-04-01

    The CENALT (CENtre d'Alerte aux Tsunamis) is responsible for the French NTWC (National Tsunami Warning Center). This center was established through a project that was requested by the French Ministry of Interior and the Ministry of Sustainable Development. It is implemented by the Commissariat à l'énergie atomique et aux énergies alternatives (CEA), the French Hydrographic and Oceanographic Service (SHOM) and the Centre National de la Recherche Scientifique (CNRS), and is based in Bruyères-le-Châtel (30 km from Paris). This center is based on three main components: seismic network data, sea level network data, dissemination system and processing and analyzing softwares and is operating on a 24/7 basis. The CENALT has established scientific cooperation with 8 institutions and implemented and funded private leased lines to exchange data with institutions from 5 different European countries (Germany, Italy, Portugal, Spain, Tunisia). The seismic data are processed with the Seiscomp 3 software. SHOM is working on making all French tide-gauge stations operated and available in real-time in 2012, and they installed 5 new tide gage stations. The tide gage data will be processed with a customized version of the Guitar (Gempa) software allowing the detection of tsunami signals, complemented by other softwares developed by the CEA. Historical tsunami databases (sources and observations) and earthquake databases, mostly based on available international databases, have been synthetized by CEA to produce information maps in real time, used to guide operators of permanence. Precomputed tsunami scenarios are implemented to build in real time maps of the highest tsunami impact expected in deep water. Along with an optimized tsunami modeling tool, these softwares help to define the areas where the tsunami may be observed and cause damage. The CENALT has been operating since early January 2012 as a pre-operational service and will be fully operational in July 2012. It is also

  9. Partial differential equations and their applications; Equations aux derivees partielles et applications

    Energy Technology Data Exchange (ETDEWEB)

    Gauthier-Villars [ed.

    1998-12-31

    This book is dedicated to the French mathematician J.L.Lions. It represents a compilation of articles from about 80 authors. The topics treated are diverse but the more or less commune matter is the study of the characteristics of some partial differential equations. Stability, optimal approximation, numerical resolution, particular applications are among the subjects reviewed. An article deals with the MHD stability of fusion plasmas in tokamaks, another presents the scientific and technical challenges of nuclear energy in France. The latter that contains no equations can be considered as an enjoyable break in a sea of about 40 mathematical articles. (A.C.)

  10. Surveillance acoustique des câbles de ponts : application aux ponts en béton précontraint

    OpenAIRE

    Brevet, P.; ROBERT, JL; AUBAGNAC, C

    2003-01-01

    Le suivi de la dégradation des câbles de ponts à l'aide de systèmes de surveillance acoustique est opérationnel depuis 1969. Le système actuellement mis en oeuvre utilise les progrès de l'électronique, de la numérisation et des télécommunications. Il permet le traitement en temps réel des signaux, l'adaptation automatique des capteurs "intelligents" aux conditions sur site et la gestion des alarmes : identification et transmission aux services et autorités compétentes. La numérisation a permi...

  11. Du panafricanisme à la réafricanisation : formation et actualité du mouvement akan aux États-Unis

    OpenAIRE

    Guedj, Pauline

    2014-01-01

    Du panafricanisme à la réafricanisation : formation et actualité du mouvement akan aux États-Unis. À Cuba et au Brésil, la réafricanisation des religions afro-américaines est centrée autour de la valorisation des origines yoruba de ces cultes. En se fondant sur une enquête de terrain réalisée aux États-Unis, cet article montre comment l’originalité de la réafricanisation en Amérique du Nord réside dans l’existence, à côté de la religion des orisha, d’un autre système de croyance « africain » ...

  12. Fédéralisme et droits des LGBT aux États-Unis et au Canada : analyse comparatives des politiques

    OpenAIRE

    Miriam Smith

    2014-01-01

    L’article examine le militantisme LGBT et les résultats des politiques en matière de droit pénal et du mariage entre personnes de même sexe de 1969 à aujourd’hui, dans le cadre d’une analyse comparée du fédéralisme aux États-Unis et au Canada. Nous soutiendrons que le fédéralisme a grandement façonné les politiques publiques relatives aux droits des LGBT. Dans le régime américain, le potentiel d’expansion du fédéralisme a favorisé les changements graduels de politiques dans les États et, para...

  13. Les trajectoires de conversion écologique face aux enjeux économiques et sociaux du « logement durable » en France

    OpenAIRE

    Hamman, Philippe; Frank, Cécile; Mangold, Marie

    2014-01-01

    Cet article interroge les trajectoires de conversion écologique des modes de vie à travers un questionnement du logement en développement durable en France, et retient deux groupes cibles : les jeunes primo-accédants et les séniors, dans trois régions différentes. Par rapport aux programmes immobiliers axés sur le « durable » qui se développent à l’heure actuelle, et mettent fréquemment l’accent sur une dimension technique liée aux économies d’énergie, la recherche révèle la pluralité des dyn...

  14. Adaptation of systems to fluid changes; Adaptation des systemes aux changements de fluides

    Energy Technology Data Exchange (ETDEWEB)

    Clodic, D. [Ecole Nationale Superieure des Mines, 75 - Paris (France)

    1996-12-31

    Regulation constraints and the stoppage of CFCs production and HCFCs production in the future lead to rapid evolutions in the conceiving of refrigerating installations which are linked with refrigerant changes. The refrigerant/installation pair has become the aim of detailed analyses in order to understand the relation between the thermodynamical properties of fluids and the energy efficiency of refrigerating installations. The efficiency depends entirely on the global design of the installation while the choice of the fluid is only one element that contributes to this efficiency. This paper analyzes successively: the consequences of pure refrigerant substitution on volume and centrifugal compressors, and the constraints linked with the use of mixtures close to azeotropic compounds (R408A and R404A) and mixtures with temperature shift like R407C. In this last case, the replacement is deeply different in the case of water heat exchangers and in the case of air-circulation heat exchangers. (J.S.) 3 refs.

  15. Phenotypes associated with down-regulation of Sl-IAA27 support functional diversity among Aux/IAA family members in tomato.

    Science.gov (United States)

    Bassa, Carole; Mila, Isabelle; Bouzayen, Mondher; Audran-Delalande, Corinne

    2012-09-01

    The phytohormone auxin is known to regulate several aspects of plant development, and Aux/IAA transcription factors play a pivotal role in auxin signaling. To extend our understanding of the multiple functions of Aux/IAAs further, the present study describes the functional characterization of Sl-IAA27, a member of the tomato Aux/IAA gene family. Sl-IAA27 displays a distinct behavior compared with most Aux/IAA genes regarding the regulation of its expression by auxin, and the Sl-IAA27-encoded protein harbors a unique motif of unknown function also present in Sl-IAA9 and remarkably conserved in monocot and dicot species. Tomato transgenic plants underexpressing the Sl-IAA27 gene revealed multiple phenotypes related to vegetative and reproductive growth. Silencing of Sl-IAA27 results in higher auxin sensitivity, altered root development and reduced Chl content in leaves. Both ovule and pollen display a dramatic loss of fertility in Sl-IAA27 down-regulated lines, and the internal anatomy of the flower and the fruit are modified, with an enlarged placenta in smaller fruits. In line with the reduced Chl content in Sl-IAA27 RNA interference (RNAi) leaves, genes involved in Chl synthesis display lower expression at the level of transcript accumulation. Even though Sl-IAA27 is closely related to Sl-IAA9 in terms of sequence homology and the encoded proteins share common structural features, the data indicate that the two genes regulate tomato fruit initiation and development in a distinct manner.

  16. Gestion bancaire du risque de non-remboursement des crédits aux entreprises : une revue de la littérature

    OpenAIRE

    Rougès, Véronique

    2003-01-01

    Les banquiers subissent un risque de non-remboursement des crédits aux entreprises. Ce risque peut être réduit lors des deux phases du crédit : lors de l'octroi, par une analyse du risque de défaillance et la rédaction de contrats incitatifs, et en cours de vie, par un suivi actif du crédit.

  17. INAVEM : un parcours professionnel d’écoute et d’aide aux victimes / INAVEM: a professional way of listening to and helping victims of crime

    Directory of Open Access Journals (Sweden)

    Bellucci Sabrina

    2012-08-01

    Full Text Available It is only in the last 20 years that support for victims of crime has received attention. The French history of associations dedicated to victims of crime is based on INAVEM (Institut National d’Aide aux Victimes et de Médiation – National Institute for Victims of Crime and Mediation: indeed, an associative network and its federation devoted to a mission of general interest and public service, constitute a French specificity. In France, the enforcement of the public policy to help and support victims of crime relies on associations, the most of which joined the INAVEM. L’aide aux victimes a longtemps été méconnue, elle s’est construite progressivement et a connu un essor considérable au cours de ces vingt dernières années. L’histoire associative française au service de la cause des victimes se fonde sur l’INAVEM (Institut National d’Aide aux Victimes et de Médiation : en effet, un réseau associatif et sa fédération en charge d’une mission d’intérêt général, de service public, constitue une spécificité française. La mise en œuvre de la politique publique d’aide aux victimes repose en France sur des structures associatives, la plupart adhérentes à l’INAVEM.

  18. Comparative performance of the RapID Yeast Plus System and the API 20C AUX Clinical Yeast System.

    Science.gov (United States)

    Smith, M B; Dunklee, D; Vu, H; Woods, G L

    1999-08-01

    The performance of the RapID Yeast Plus System (Innovative Diagnostic Systems, Norcross, Ga.), a 4-h micropanel using single-substrate enzymatic test reactions, was compared with that of the API 20C AUX Clinical Yeast System (bioMerieux Vitek, Hazelwood, Mo.), a 48- to 72-h carbohydrate assimilation panel. Two hundred twenty-five yeasts, yeast-like fungi, and algae, comprising 28 species and including 30 isolates of Cryptococcus neoformans, an important pathogen not tested in appreciable numbers in other comparisons, were tested by both methods. On initial testing, 196 (87.1%) and 215 (95.6%) isolates were correctly identified by the RapID and API systems, respectively. Upon repeat testing, the number of correctly identified isolates increased to 220 (97.8%) for the RapID system and 223 (99.1%) for the API system. Reducing the turbidity of the test inoculum to that of a no. 3 McFarland turbidity standard, which is below that recommended by the manufacturer, resulted in the correct identification of most of the isolates initially misidentified by the RapID system, including 10 of 30 C. neoformans isolates. Concordance between the RapID and API results after repeat testing was 97.3%.

  19. Aux origines de la masse particules élémentaires et symétries fondamentales

    CERN Document Server

    Iliopoulos, Jean

    2014-01-01

    Pourquoi les « particules élémentaires » qui forment toute la matière ont-elles une masse ? Étrange question qui semble être en contradiction avec toute notre intuition physique. Dans ce livre, nous montrons d'abord que la réponse à cette question est tout sauf évidente et ensuite que la clé peut se trouver dans la découverte récente d'une nouvelle particule à l'accélérateur géant LHC (Large Hadron Collider) situé au CERN, près de Genève. Nous proposons au lecteur une promenade guidée qui l'emmènera des confins de l'Univers pendant les premières fractions de seconde après le Big Bang, aux plus petits constituants de la matière tels que nous les apercevons dans nos laboratoires. Notre guide sera un principe profond de symétrie qui, de façon surprenante, semble déterminer la structure du monde.

  20. Flora Tristan: De la nécessité de faire bon accueil aux femmes étrangères

    Directory of Open Access Journals (Sweden)

    Martine Reid

    2014-10-01

    Full Text Available Dans son traité De la nécessité de faire bon accueil aux femmes étrangères (1835, Flora Tristan (1803-1844, l’écrivaine française qui adopte l’état psychologique d’une étrangère dans son propre pays, traite de la situation des femmes “étrangères” qui voyagent seules en France et/ou commencent une nouvelle vie dans le pays, en particulier à Paris. Politiquement engagée auprès des plus défavorisés à partir du socialisme, Tristan propose la création d’une association pour ces femmes. En assimilant les deux groupes d'"étrangères” (nationales et non nationales, car elle pense que le même type d’accueil doit être fourni à toutes, Tristan préconise l’aide à la voisine nécessiteuse, voisine qui est à la fois un sujet national ou un sujet en transit, une femme sans-papiers ou une réfugiée.

  1. Mutation in domain II of IAA1 confers diverse auxin-related phenotypes and represses auxin-activated expression of Aux/IAA genes in steroid regulator-inducible system.

    Science.gov (United States)

    Park, Jin-Young; Kim, Hye-Joung; Kim, Jungmook

    2002-12-01

    Most of Aux/IAA genes are rapidly induced by auxin. The Aux/IAA proteins are short-lived nuclear proteins sharing the four conserved domains. Domain II is critical for rapid degradation of Aux/IAA proteins. Among these gene family members, IAA1 is one of the earliest auxin-inducible genes. We used a steroid hormone-inducible system to reveal putative roles and downstream signaling of IAA1 in auxin response. Arabidopsis transgenic plants were generated expressing fusion protein of IAA1 (IAA1-GR) or IAA1 with a mutation in domain II (iaa1-GR) and the glucocorticoid hormone-binding domain (GR). IAA1-GR transgenic plants did not exhibit any discernable phenotypic differences by DEX treatment that allows nuclear translocation of the fusion protein. In contrast, diverse auxin-related physiological processes including gravitropism and phototropism were impaired by DEX treatment in roots, hypocotyls, stems, and leaves in iaa1-GR transgenic plants. Auxin induction of seven Aux/IAA mRNAs including IAA1 itself was repressed by DEX treatment, suggesting that IAA1 functions in the nucleus by mediating auxin response and might act as a negative feedback regulator for the expression of Aux/IAA genes including IAA1 itself. Auxin induction of Aux/IAA genes in the presence of cycloheximide can be repressed by DEX treatment, showing that the repression of transcription of the Aux/IAAs by the iaa1 mutant protein is primary. Wild-type IAA1-GR could not suppress auxin induction of IAA1 and IAA2. These results indicate that inhibition of auxin-activated transcription of Aux/IAA genes by the iaa1 mutant protein might be responsible for alteration of various auxin responses.

  2. Separation of reaction mechanisms at low energy. Study of the reactions: {sup 27}Al(d,p) {sup 28}Al, {sup 24}Mg(d,p) {sup 25}Mg, and {sup 24}Mg(d, {alpha}) {sup 22}Na; Sur la separation des mecanismes de reaction a basse energie. Etude des reactions: {sup 27}Al(d,p) {sup 28}Al, {sup 24}Mg(d,p) {sup 25}Mg, et {sup 24}Mg(d, {alpha}) {sup 22}Na

    Energy Technology Data Exchange (ETDEWEB)

    Mermaz, M. [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1966-06-01

    The two sets of angular distributions of (d,p) reactions on Al and Mg, measured between 2 and 6 MeV, have given the possibility to test, in analysing the statistical fluctuations of cross-section, the validity of the separation of their mean values in two parts, one 'direct', another given by the statistical mechanism. With the same method of analysis we have studied excitation functions for several alpha groups of the reaction {sup 24}Mg(d, {alpha}) {sup 22}Na and given an evidence for an intermediate structure for the alpha channel leading to the 3. excited state of {sup 22}Na. The angular distribution of the wide resonance at 15.9 MeV in {sup 26}Al has been obtained. (author) [French] Les deux ensembles de distributions angulaires des reactions (d,p) sur Al et Mg, mesures entre 2 et 6 MeV, nous ont permis, en analysant les fluctuations statistiques de sections efficaces, de verifier la possibilite de la separation de leurs valeurs moyennes en deux composantes: l'une 'directe', l'autre due au mecanisme statistique. Avec la meme methode d'analyse nous avons etudie les fonctions d'excitation des premiers groupes alpha de la reaction {sup 24}Mg(d,{alpha}) {sup 22}Na et mis en evidence une structure intermediaire pour la voie de reaction aboutissant au 3eme niveau de {sup 22}Na. Nous avons obtenu la distribution angulaire de la resonance large situee a une energie d'excitation de 15,9 MeV dans {sup 26}Al. (auteur)

  3. Behaviour of circuits with respect to ionising radiations; Tenue des circuits aux radiations ionisantes

    Energy Technology Data Exchange (ETDEWEB)

    Boudenot, J.C. [Thomson-CSF, 75 - Paris (France)

    1999-11-01

    Electronic components with a greater integration of transistors, with an increase of surface and with reduced grid distances and operating voltages are more and more developing. These new technologies are more sensible to radiative environments which can lead to important disturbances: multiple upset, low level leakage current in MOS components etc.. The hardening techniques used so far must be adapted in order to take into account these new phenomena. This paper deals successively with: 1 - recall about radiations: interaction with matter (electrons, protons, heavy ions, photons, neutrons), effects to be considered (dose and dose rates, displacements, linear energy transfer and critical load); 2 - radiative environments: nuclear explosions, spatial environment (radiation belts, solar eruptions and wind, cosmic radiation), atmospheric environment, other environments (particle accelerators, robots in radiative environments, nuclear power plants, propulsion reactors, fusion devices, dismantling of nuclear facilities, industrial irradiations); 3 - radiative effects and technological hardening: cumulated dose (basic mechanisms, influence of radiation, polarization, dose rates, temperature, process, vulnerability of components), neutron fluence, heavy ions; 4 - protection means: components technology, circuits and systems (dose and dose rates, neutrons, heavy ions), hardening strategy; 5 - hardening validation: testing methods and procedures, nuclear hardening assurance (context, definition of needs, distribution of afterlife probabilities, design margins, components classification, repertory file), space hardening assurance (context, dose effects, direct and indirect heavy ion effects, assurance costs). (J.S.)

  4. L’Afrique sub-saharienne face aux famines énergétiques

    Directory of Open Access Journals (Sweden)

    Géraud Magrin

    2008-02-01

    Full Text Available La faible consommation d’énergie est une cause et un symptôme du sous-développement de l’Afrique. La pénurie énergétique qui menace le monde semble y introduire deux trajectoires différentes : pour les pays pétroliers, il s’agit d’éviter les pièges de la « malédiction des matières premières », d’utiliser la rente pour consolider l’Etat et l’économie. Pour les autres, il convient déjà de penser l’après pétrole. Partout, des innovations sont à rechercher pour que l’énergie ne soit plus un frein mais un catalyseur du développement.   The low consumption of energy is a cause and a symptom of Africa underdevelopment. The fuel shortage which threatens the world seems to induce two different paths. The oil-producing countries have to avoid the traps of the "commodities curse"; they have to use the oil incomes to strengthen both their State and their economy. The other countries have to think of the after oil. Everywhere innovations have to be sought so that economy be no more an hindrance, but a development catalyst.

  5. Large Eddy simulations of jet in cross flow; Simulations aux grandes echelles: application au jet transverse

    Energy Technology Data Exchange (ETDEWEB)

    Priere, C.

    2005-01-15

    Nowadays, environmental and economic constraints require considerable research efforts from the gas turbine industry. Objectives aim at lowering pollutants emissions and fuel consumption. These efforts take a primary importance to satisfy a continue growth of energy production and to obey to stringent environmental legislations. Recorded progresses are linked to mixing enhancement in combustors running at lean premixed operating point. Indeed, industry shows itself to be attentive in the mixing enhancement and during the last years, efforts are concentrated on fresh and burned gas dilution. The Jet In Cross Flow (JICF), which constitutes a representative case to further the research effort. It has been to be widely studied both in experimentally and numerically, and is particularly well suited for the evaluation of Large Eddy Simulations (LES). This approach, where large scale phenomena are naturally taken into account in the governing equation while the small scales are modelled, offers the means to well-predict such flows. The main objective of this work is to gauge and to enhance the quality of the LES predictions in JICF configurations by means of numerical tools developed in the compressible AVBP code. Physical and numerical parameters considered in the JICF modelization are taken into account and strategies that are able to enhance quality of LES results are proposed. Configurations studied in this work are the following: - Influences of the boundary conditions and jet injection system on a free JICF - Study of static mixing device in an industrial gas turbine chamber. - Study of a JICF configuration represented a dilution zone in low emissions combustors. (author)

  6. Influência do auxílio mecânico na colheita de tomates Influence of the harvesting aid equipment in tomato harvest

    Directory of Open Access Journals (Sweden)

    Augusto C. Sanchez

    2006-12-01

    Full Text Available O objetivo deste trabalho foi avaliar parâmetros que influenciam na colheita auxiliada e comparar a colheita tradicionalmente realizada para tomate de mesa em propriedades agrícolas, no Estado de São Paulo. Para tanto, foi desenvolvido um dispositivo de auxílio à colheita, de estrutura metálica, dotado de rodas e com assentos acoplados para um ou dois colhedores, avaliado em quatro modalidades de colheita: testemunha (colheita-padrão utilizada na Fazenda Santa Luzia, Brotas-SP, colhedor a pé com auxílio, colhedor sentado com auxílio e composição dos dois sistemas, com dois colhedores sentados e um a pé, em diferentes velocidades de deslocamento. Os resultados demonstraram que os tipos de colheita com auxílio mecânico se apresentaram mais eficientes do que a testemunha em relação à produtividade horária média por colhedor. O sistema de colheita auxiliada com três colhedores apresentou aumento de 290% na produtividade média horária por colhedor, para a faixa de 0,5 a 1,0 fruto por planta, seguido dos sistemas de colheita auxiliada com colhedor a pé, com aumento de aproximadamente 41%, e colheita auxiliada com colhedor sentado, com aumento de aproximadamente 35%. Esses resultados comprovam a importância do uso do dispositivo de auxílio mecânico.Fresh tomato harvest is traditionally made without harvesting aids. The main goal of this research was to evaluate performance parameters of fresh tomato harvesting aid equipment and compare it to traditional harvest, in the state of São Paulo. Therefore, an equipment was developed and the harvest process was evaluated in four different ways: traditional system (harvest system used in Santa Luzia farm, Brotas, SP, Brazil, picker walking with a harvesting aid equipment, picker seated in a harvesting aid equipment and a composition of both systems: two pickers seated and one picker walking in two different velocities ranges. The different systems using harvesting aid showed an

  7. Acquisition de donnees a haute resolution et faible latence dediee aux capteurs avioniques de position

    Science.gov (United States)

    Koubaa, Zied

    The communication network and the detection mechanisms are two critical systems in a plane. Their performance has a direct impact on aircrafts. This is of particular interest for avionics designers, who have increasingly invested more and more in the development of these elements. As a part of a project in this domain, we introduce the design and the development of a smart interface for position sensors dedicated to flights (Smart Sensor Interface - SSI). This interface will serve to connect sensors of different technologies (electromagnetic, optical and MEMS) to the new communication network, AFDX. The role of this interface is to generate an appropriate excitation signal for certain types of sensors (R/LVDT), and to treat, demodulate, and digitize their output signals. The proposed interface is thus composed of a Signal Acquisition Path (SAP) and an Excitation Signal Generation (ESG). By adopting the Integrated Modular Avionics architecture (IMA), we can minimize the size of the classic interface, reduce its energy consumption and improve its reliability and its performance. The focus of our design is particularly on the Data Acquisition Path (DAP). An Architecture characterized by a high resolution (14 bits) and a low latency (1.2 ms) of this module is introduced and developed in this prestigious work. This architecture was developed after a wellconducted study of existing solutions found in literature work and a detailed analysis of the problems arise in the design and implementation of this system (DAP). The conversion of the sensor signal into a digital signal is the most important step in acquiring data, as it sets the resolution of the acquired information and generates the majority of its latency. This module can also affect the reliability and stability of the system. Among different models and architectures, the Delta-Sigma analog-to-digital converter (ADC) is preferred for this application (for better resolution). This converter is formed by an analog

  8. Les stratégies des investisseurs : des bords de ville aux bords de mer

    Directory of Open Access Journals (Sweden)

    Sophie Cueille

    2004-03-01

    Full Text Available L’architecture de la villégiature a un prix. Construire des villes nouvelles, qu’elles soient balnéaires, thermales ou périurbaines, induit la mise en place de réseaux ferroviaires et viaires, d’édifices dévolus à la détente, les soins ou les jeux, d’hôtels et de maisons. Quels sont les investisseurs qui engagent d’importants financements en ces lieux ? Personnages de la vie politique, industrielle et bancaire, le plus souvent parisiens, tous se saisissent des besoins de la nouvelle société bourgeoise montante, consommatrice de loisirs dès le milieu du XIXe siècle. Si certains projets peuvent être initialement teintés d’une certaine forme de philanthropie, toutes les opérations deviennent très vite de véritables entreprises lucratives. Sociétés civiles en tous genres, concessions et affermages, les formules d’investissement s’adaptent au produit où souvent se mêlent intérêts publics et privés. La réussite de tels projets suscite également le financement de campagnes publicitaires importantes : journaux, affiches et guides sont publiés pour faire accourir la clientèle visée et ainsi rapporter aux investisseurs les profits escomptés.

  9. Le projet Petits Films : du retour aux participants à la valorisation des données

    Directory of Open Access Journals (Sweden)

    Piccoli Vanessa

    2015-01-01

    Full Text Available En 2014, au sein du laboratoire ICAR (équipe InSitu / Cellule Corpus Complexe un projet appelé “Petits Films” a été conduit avec une double finalité : confectionner des petits films à partir de trois différents corpus et parallèlement mener une réflexion sur les modalités de réalisation, les finalités et les contraintes de ce type de réalisation. On considère que dans le domaine de l’analyse conversationnelle, dans lequel les chercheurs recourent de plus en plus à des corpus de données vidéo, la réalisation d’un petit film peut représenter non seulement un retour pour les participants, mais aussi un moyen de valorisation du corpus, d’un type d’approche en linguistique et plus largement de l’activité du laboratoire de recherche. Grâce à leur forme agréable et à leur courte durée, les petits films sont conçus pour la diffusion et la valorisation des méthodologies et des recherches, ils sont accessibles pour un large public, même de non-experts. Cependant, il est nécessaire de réfléchir aux questions juridiques et déontologiques que soulève cette opération.

  10. ETUDES ANALYTIQUES : Détection des OGM : du libre choix des consommateurs aux études de biovigilance

    Directory of Open Access Journals (Sweden)

    Bertheau Yves

    2000-07-01

    Full Text Available Les récentes affaires de semences conventionnelles de colza et de maïs contaminées par des traces d’OGM ont à nouveau, s’il en était besoin, rappelé à notre bon souvenir les besoins en méthodes de détection et d’identification des OGM fiables et sensibles. Les développements se poursuivent, certes bien plus lentement qu’initialement espéré du fait du nombre important de facteurs à maîtriser et du caractère relativement inédit de ce travail. Concernant des matrices alimentaires variées, cette détection se heurte au manque de recul dans plusieurs domaines tels que celui de l’extraction et la purification d’acides nucléiques en quantité et en qualité. Bien que développées pour satisfaire aux besoins réglementaires européens concernant l’alimentation humaine, ces méthodes devraient être aisément applicables dans d’autres domaines concernés par les OGM (étude des transferts de gènes par flux pollinique, éventuels transferts horizontaux, suivi des acides nucléiques lors de l’ingestion.... Au-delà des OGM, les méthodes mises en œuvre devraient présenter un intérêt dans d’autres domaines comme la microbiologie, l’épidémiologie ou l’authentification des composants biologiques d’un produit.

  11. The reactions of magnesium and its alloys with moist gases at high temperatures; Les reactions du magnesium et de ses alliages avec les gaz humides aux temperatures elevees

    Energy Technology Data Exchange (ETDEWEB)

    Darras, R. [Commissariat a l' Energie Atomique, Saclay (France). Centre d' Etudes Nucleaires

    1963-02-15

    presence sont moins oxydantes. De plus, un changement important d'energie d'activation du processus d'oxydation se produit systematiquement, mais aussi a une temperature variable suivant l'atmosphere consideree. Cependant, dans le cas des alliages, la cinetique d'oxydation lineaire classique est generalement precedee de courtes periodes d'induction, a caractere parabolique. On a ensuite mis en evidence et interprete deux possibilites d'inhibition de ia corrosion du magnesium par la vapeur d'eau: soit a la suite d'une fluoration superficielle partielle, soit lorsque le gaz porteur est l'anhydride carbonique. D'autre part, les conditions extremes de l'oxydation, c'est-a-dire les phenomenes d'inflammation qui surviennent a une temperature bien determinee dans chaque atmosphere, ont fait l'objet d'une etude particuliere. Enfin, on s'est efforce de degager la portee de l'ensemble de ces resultats aux deux points de vue fondamental et pratique. (auteur)

  12. Assimilation ou fidélité aux valeurs du Vieux Monde ? La nouvelle et sa représentation de l’immigration juive aux Etats-Unis

    Directory of Open Access Journals (Sweden)

    Crystel Pinçonnat

    2001-06-01

    Full Text Available Quel modèle adopter : le respect de la tradition ou la voie de l’américanisation ? A partir de quelques nouvelles traduites du yiddish (New-Yorkaises de Lamed Shapiro, Le Fils qui venait d’Amérique d’Isaac Bashevis Singer et de l’américain (L’Oiseau-juif de Bernard Malamud, Eli le fanatique de Philip Roth et La Voix la plus forte de Grace Paley, cet article se propose d’étudier la représentation de la déchirure qui hante la communauté juive ashkénaze émigrée aux Etats-Unis : son tiraillement entre fidélité au passé et adhésion au présent.What model should be adopted: being respectful of tradition or becoming Americanized? A lot of Yiddish or American short stories raise the issue: New-York’s Women by Lamed Shapiro, The Son Who Came from America by Isaac Bashevis Singer,The Jewbird by Bernard Malamud Eli, The Fanatic by Philip Roth, and The Loudest Voice by Grace Paley. This article examines the representation these texts offer of the ongoing conflict within the Ashkenaze Jewish community, who came to the United States, torn between its past and its present, resistance and assimilation.¿Qué modelo adoptar : el respeto de la tradición o la vía de la americanización ? A partir de algunas novelas cortas traducidas del yiddish (New York’s Women de Lamed Shapiro, The Son Who Came from America de Isaac Bashevis Singer y del americano (The Jewbird de Bernard Malamud, Eli, The Fanatic de Philp Roth, y The Loudest Voice de Grace Paley, este artículo analiza la representación del dilema que desgarra a la comunidad judía asquenazie inmigrada a los Estados Unidos : la elección entre la fidelidad al pasado y la adhesión al presente.

  13. Le recours aux modeles dans l'enseignement de la biologie au secondaire : Conceptions d'enseignantes et d'enseignants et modes d'utilisation

    Science.gov (United States)

    Varlet, Madeleine

    Le recours aux modeles et a la modelisation est mentionne dans la documentation scientifique comme un moyen de favoriser la mise en oeuvre de pratiques d'enseignement-apprentissage constructivistes pour pallier les difficultes d'apprentissage en sciences. L'etude prealable du rapport des enseignantes et des enseignants aux modeles et a la modelisation est alors pertinente pour comprendre leurs pratiques d'enseignement et identifier des elements dont la prise en compte dans les formations initiale et disciplinaire peut contribuer au developpement d'un enseignement constructiviste des sciences. Plusieurs recherches ont porte sur ces conceptions sans faire de distinction selon les matieres enseignees, telles la physique, la chimie ou la biologie, alors que les modeles ne sont pas forcement utilises ou compris de la meme maniere dans ces differentes disciplines. Notre recherche s'est interessee aux conceptions d'enseignantes et d'enseignants de biologie au secondaire au sujet des modeles scientifiques, de quelques formes de representations de ces modeles ainsi que de leurs modes d'utilisation en classe. Les resultats, que nous avons obtenus au moyen d'une serie d'entrevues semi-dirigees, indiquent que globalement leurs conceptions au sujet des modeles sont compatibles avec celle scientifiquement admise, mais varient quant aux formes de representations des modeles. L'examen de ces conceptions temoigne d'une connaissance limitee des modeles et variable selon la matiere enseignee. Le niveau d'etudes, la formation prealable, l'experience en enseignement et un possible cloisonnement des matieres pourraient expliquer les differentes conceptions identifiees. En outre, des difficultes temporelles, conceptuelles et techniques peuvent freiner leurs tentatives de modelisation avec les eleves. Toutefois, nos resultats accreditent l'hypothese que les conceptions des enseignantes et des enseignants eux-memes au sujet des modeles, de leurs formes de representation et de leur approche

  14. Cartographie de la vulnérabilité globale d'une population citadine face aux risques naturels: le cas de Manizales

    Directory of Open Access Journals (Sweden)

    Anne-Catherine CHARDON

    1994-12-01

    Full Text Available Cette méthode cartographique sert à évaluer la vulnérabilité de la population d’une grande ville andine (Manizales, Colombie, exposée aux séismes et à de fréquents glissements de terrain. Sept facteurs naturels et huit facteurs socio-économiques, mesurés à l’échelle du quartier, sont intégrés, avec d’autre facteurs géographiques, dans une carte de vulnérabilité globale.

  15. De la production fruitière intégrée à la gestion écologique des vergers aux Antilles

    OpenAIRE

    Lavigne, Claire; Lesueur-Jannoyer, M.; Lacroix, S.; Chauvet, G.; Lavigne, A.; Dufeal, D.

    2011-01-01

    La forte anthropisation aux Antilles françaises, la pression des monocultures de banane et de canne à sucre, et l’usage immodéré de pesticides, ont abouti à la pollution persistante d’une partie importante des sols de la SAU ainsi que des eaux de rivière et des nappes phréatiques. Si, dans les dix dernières années, la recherche de moyens de lutte biologique contre les insectes a été prioritaire, la lutte contre les adventices continue d’être un problème central pour les arboriculteurs qui ne ...

  16. Le graphe et la graphie de la Terre. Un exercice formel pour commémorer le bicentennaire du Voyage aux Amériques équinoxales

    Directory of Open Access Journals (Sweden)

    Hervé Gazel

    1999-06-01

    Full Text Available Cette communication interroge la migration de connaissances géographiques vers un support numérique. Une telle migration peut se concevoir comme une hypertextualisation. Elle passe par l’examen de la relation entre le graphe et l’écriture géographique. L’exemple de la classification des climats qui renvoie aux travaux de Humboldt permet de montrer comment la mutation de connaissances géographiques est liée à l’analyse de la relation entre graphe et graphie de la terre.

  17. La participation des personnes utilisatrices aux exercices de planification et d'organisation des services de santé mentale au Québec

    Directory of Open Access Journals (Sweden)

    Michèle Clément

    2013-10-01

    Full Text Available Cet article documente la manière dont s'est renouvelé et s'est transformé au fil du temps le projet de faire participer les usagers aux exercices de planification et d'organisation des services de santé mentale au Québec (Canada. Pour ce faire, les auteurs reviennent sur l'ensemble des documents ministériels qui ont traité de cette question et dégage, pour les principaux moment-clés, les principales modalités de participation des usagers.

  18. Expériences religieuses en contexte urbain. De l'ordo monasticus aux religiones novæ : le jalon du monachisme militaire

    OpenAIRE

    Carraz, Damien

    2013-01-01

    http://pubp.univ-bpclermont.fr/public/Histoire_Medievale.php; International audience; Les ordres militaires sont-ils les "fils" de la révolution urbaine du XIIe siècle ? Représentent-ils en cela un jalon qui aiderait à comprendre le passage de l'ordo monasticus traditionnel aux "Religiones novæ" du XIIIe siècle incarnées par l'expérience mendiante ? Pour tenter de mieux comprendre les modalités de l'inurbamento des ordres militaires, on s'efforce d'abord de situer brièvement ces derniers au s...

  19. La défense face aux défis du dérèglement climatique

    Directory of Open Access Journals (Sweden)

    Bastien Alex

    2015-01-01

    Full Text Available Dans un rapport rédigé il y a plus de dix ans, le Pentagone établissait un lien entre sécurité et changement climatique. Depuis lors, l’étude du potentiel crisogène du phénomène s’est approfondie. Du fait de sa propension à renforcer le pouvoir de nuisance des aléas naturels et à, indirectement, produire de nouveaux risques, il est désormais considéré comme un « multiplicateur de menace » (Center for Naval Analyses 2007. Le changement climatique est ainsi un enjeu de premier plan pour les acteurs de la défense, institutionnels, militaires et industriels, et soulève plusieurs problématiques. Dans un premier temps se pose évidemment la question des risques et menaces sécuritaires découlant des manifestations des changements climatiques (modification du régime des précipitations, hausse du niveau des mers et océans, multiplication des phénomènes climatiques exceptionnels et l’étude de leur propension à générer de l’insécurité. Dans un deuxième temps se pose celle des réponses à y apporter en matière doctrinale (réflexion stratégique, opérationnelle (gestion de crise mais aussi en termes capacitaires (impacts sur l’outil militaire. Enfin, il convient d’étudier dans un troisième temps, et c’est là un paradoxe, les conséquences sur la sécurité internationale des politiques et stratégies d’adaptation qui seront développées par les Etats ou d’autres acteurs pour faire face aux défis posés par le dérèglement climatique.

  20. Élaboration de couches minces de carbone par ablation laser femtoseconde pour application aux biomatériaux implantables

    Science.gov (United States)

    Loir, A.-S.; Garrelie, F.; Donnet, C.; Subtil, J.-L.; Belin, M.; Forest, B.; Rogemond, F.; Laporte, P.

    2005-06-01

    Des films de tetrahedral amorphous-Carbon (ta-C) ont été déposés, sous vide poussé, par ablation d'une cible de graphite avec un laser Ti : saphir (durée d'impulsion 170 fs, fréquence de répétition 1 kHz, énergie maximale par impulsion 1,5 mJ, longueur d'onde 800 nm) sur substrats standard et sur biomatériaux (acier AISI 316L, polyéthylène à très haut poids moléculaire). Les propriétés de ces couches (structure, propriétés nanomécaniques et tribologiques) ont été caractérisées, en fonction des conditions d'élaboration, en examinant l'intérêt de l'utilisation d'un laser femtoseconde et leur capacité à satisfaire aux exigences spécifiques du domaine biomédical. Les propriétés d'adhérence des films ont été considérablement améliorées lors du dépôt sur des substrats en acier inoxydable préalablement préparés par décapage ionique in situ sous atmosphère d'argon. La surface hémisphérique d'une tête fémorale, en acier inoxydable, de prothèse de hanche de diamètre 22,2 mm a été revêtue d'un film de DLC adhérent et homogène en épaisseur. La résistance à l'usure de ce revêtement sera quantifiée à l'aide d'un simulateur de marche durant un million de cycles (correspondant à une année d'activité physique d'un être humain).

  1. La chasse aux axions

    CERN Multimedia

    Robilliard, Cécile

    2009-01-01

    Since three years, physicists double efforts to catch an hypothetical particle that would not interact - or little - with the matter. Its detection would resolve a lot of problems in the filed of particle physics and cosmology. (4 pages)

  2. Endosidin1 defines a compartment involved in endocytosis of the brassinosteroid receptor BRI1 and the auxin transporters PIN2 and AUX1.

    Science.gov (United States)

    Robert, Stéphanie; Chary, S Narasimha; Drakakaki, Georgia; Li, Shundai; Yang, Zhenbiao; Raikhel, Natasha V; Hicks, Glenn R

    2008-06-17

    Although it is known that proteins are delivered to and recycled from the plasma membrane (PM) via endosomes, the nature of the compartments and pathways responsible for cargo and vesicle sorting and cellular signaling is poorly understood. To define and dissect specific recycling pathways, chemical effectors of proteins involved in vesicle trafficking, especially through endosomes, would be invaluable. Thus, we identified chemicals affecting essential steps in PM/endosome trafficking, using the intensely localized PM transport at the tips of germinating pollen tubes. The basic mechanisms of this localized growth are likely similar to those of non-tip growing cells in seedlings. The compound endosidin 1 (ES1) interfered selectively with endocytosis in seedlings, providing a unique tool to dissect recycling pathways. ES1 treatment induced the rapid agglomeration of the auxin translocators PIN2 and AUX1 and the brassinosteroid receptor BRI1 into distinct endomembrane compartments termed "endosidin bodies"; however, the markers PIN1, PIN7, and other PM proteins were unaffected. Endosidin bodies were defined by the syntaxin SYP61 and the V-ATPase subunit VHA-a1, two trans-Golgi network (TGN)/endosomal proteins. Interestingly, brassinosteroid (BR)-induced gene expression was inhibited by ES1 and treated seedlings displayed a brassinolide (BL)-insensitive phenotype similar to a bri1 loss-of-function mutant. No effect was detected in auxin signaling. Thus, PIN2, AUX1, and BRI1 use interactive pathways involving an early SYP61/VHA-a1 endosomal compartment.

  3. La « brutalisation » de la guerre. Des guerres d’Italie aux guerres de Religion

    Directory of Open Access Journals (Sweden)

    Jean-Louis Fournel

    2005-04-01

    avait fait ses premières armes sur les champs de bataille italiens et des réactions face aux atrocités de la guerre civile, permettrait peut-être tout à la fois d’inscrire la barbarie dans le présent des conflits, de permettre un nouveau discours pacifiste, de confier paradoxalement au souverain comme instance laïque, au-dessus des choix religieux personnels, le rôle d’arbitre et de régulateur des guerres (cf. les politiques, et, enfin, de relancer la question du jus in bello (le jus ad bellum n’étant plus vraiment opératoire, pas plus que le rôle d’arbitre du pape qui s’effondrera bientôt définitivement dans l’Europe née du traité de Westphalie.

  4. Du karma aux planètes From the Karma to the Planets: Arakanese Healers and their Heterogeneous Practices

    Directory of Open Access Journals (Sweden)

    Céline Coderey

    2012-10-01

    Full Text Available En Arakan, les conceptions de la maladie et les pratiques thérapeutiques relevant du bouddhisme theravāda, de l’astrologie, du culte des esprits, de la médecine et de bien d’autres domaines forment un ensemble signifiant et hiérarchisé. Ensemble signifiant parce que malades et thérapeutes considèrent ces conceptions et pratiques comme indissociables les unes des autres et devant donc être combinées afin de mener à bien le processus de guérison. Ensemble hiérarchisé car, à l’intérieur de celui-ci, le bouddhisme occupe une place hégémonique au niveau des valeurs. Néanmoins, dans le domaine thérapeutique, son apport est limité. Ce n’est que combinées aux pratiques astrologiques, médicales, etc. que les pratiques bouddhiques peuvent contribuer à la prévention et au soin des maladies. L’attention est ici portée sur la manière dont laquelle cette totalité signifiante et hiérarchisée s’exprime dans les pratiques des thérapeutes. Sur la base d’une étude de cas, l’article montre que souvent les thérapeutes cumulent plusieurs formations et pratiques plus ou moins hétérogènes afin de pouvoir intervenir sur le plus grand nombre possible de facteurs de la maladie : déséquilibre des éléments corporels, mauvais karma, influences planétaires néfastes, agressions par des puissances maléfiques.In Arakan, sickness-related conceptions and therapeutic practices issuing from Theravada Buddhism, astrology, spirits cult and medicine form a meaningful and hierarchical whole. This whole is meaningful because patients and healers consider that it is the combination of various conceptions and various practices which makes sense and which guarantees the succes of the healing treatement. The whole is hierarchical because conceptions and practices are organised into a hierarchy where Buddhism occupies an hegemonic position. Nevertheless, in the healing field its contribution is limited. Only if combined with

  5. L’utilisation de la pierre dans la construction rurale en Normandie aux époques médiévale et moderne

    Directory of Open Access Journals (Sweden)

    Laurent Dujardin

    2012-04-01

    Full Text Available L’utilisation de la pierre dans les bâtiments ruraux anciens de Normandie est mal documentée et varie fortement selon leur localisation dans la province. La méthode d’étude adoptée consiste à partir du matériau lui-même et de son origine, à observer les bâtiments ruraux anciens, et enfin à confronter les observations aux sources écrites (tabellionnages, terriers, sources narratives, comptes de construction… et aux données de l’archéologie. Si un grand nombre de paramètres interviennent dans l’utilisation et dans la provenance des pierres, il est avéré que, lorsque la géologie le permet, on fit systématiquement appel aux ressources locales pour l’édification du blocage des murs. A côté des exploitations approvisionnant une ou quelques paroisses existaient des carrières produisant des pierres de meilleure qualité, des produits finis ou semi-finis. Enfin, la construction rurale fait appel pour des usages particuliers à des pierres plus lointaines qui sont diffusées à partir de grands centres de production en nombre limité.The use of stone in Normandy’s old rural buildings is not well documented. These uses vary widely from one part of the province to another. The method applied to study these uses was to articulate the study on the material itself and its quarry origins, to observe the old rural buildings in the field and to confront these observations with written sources (‘tabellionnages’, land registers, narrative sources, building accounts… and with archaeological evidence. Although many considerations are at play in the use and provenance of the stones, it is clear that when geology permitted it, local resources were used whenever possible for the structural walls. Alongside stone quarries which supplied one or several parishes, other quarries produced higher quality stone and finished or semi-finished products. Finally, for certain specific uses, rural construction used stones from further

  6. Analyse des statistiques de pêche aux engins dans le bassin du Rhône. Deuxième partie : étude des captures

    Directory of Open Access Journals (Sweden)

    CHANGEUX T.

    1993-07-01

    Full Text Available En confrontant les captures déclarées et les autorisations délivrées sur le Rhône et la Saône en 1988 et 1989, on estime pour ces deux années les prélèvements de la pêche aux engins à 238 t/an et 273 t/an. Les captures sont essentiellement constituées de grands cyprinidés (Abramis brama, Blicca bjoerkna, Rutilus rutilus et Chondrostoma nasus et de poissons amphihalins comme les muges (Liza ramada en majorité ou l'anguille (Anguilla anguilla. La pêche professionnelle fluviale représente en moyenne 72 % des captures. Pour certaines espèces comme les aloses (Alosa fallax en majorité, le brochet (Esox lucius, le sandre (Stizostedion lucioperca et le poisson-chat (ictalurus mêlas, les pêcheurs amateurs aux engins et filets prélèvent des quantités comparables à celles des professionnels. De plus, les amateurs sont majoritaires dans les productions de la Saône amont. La biomasse totale des captures du Rhône deltaïque arrive en seconde position derrière celle de la Saône aval, située au centre du bassin. Ce secteur apparaît comme une zone de première importance pour la pratique de la pêche aux engins strictement fluviale en France. Les captures déclarées suivent un rythme saisonnier en relation avec le cycle de l'effort de pêche mis en évidence dans la première partie de l'article (CHANGEUX et ZYLBERBLAT, ce numéro. Les aloses sont capturées pendant la fermeture des autres pêches, au mois de mai. Les muges sont capturés pendant la saison "froide" et la friture de petits cyprinidés (Alburnus alburnus, en majorité pendant la "saison chaude". Dans la Saône aval, l'analyse des Captures par Unité d'Effort (CPUE valide la distinction des métiers définis dans la première partie de l'article. L'utilisation des CPUE est envisagée pour suivre les stocks des principales captures du secteur.

  7. Immigration(s et accès aux soins en Guyane Immigration(s and access to health care in French Guyana

    Directory of Open Access Journals (Sweden)

    Estelle Carde

    2012-11-01

    Full Text Available L’immigration en Guyane est plurielle. Aux migrants caribéens que la précarité et les violences politiques ont chassés de chez eux se mêlent des migrants partis de France métropolitaine pour goûter à l’exotisme de cette société française sise en Amérique du Sud. Cette pluralité se retrouve lorsque les premiers, usagers étrangers du système de soins, rencontrent des professionnels qui, bien que français, sont soit autochtones, soit eux-mêmes migrants. Ces usagers étrangers sont parfois victimes de discriminations opérées par des professionnels autochtones qui les suspectent de venir profiter indûment du système de soins local. Si ces discriminations ont également cours ailleurs en France, elles sont exacerbées en Guyane par l’importance des flux migratoires et des difficultés socio-économiques. Une autre figure de l’accès aux soins en contexte d’immigration, plus spécifique à la Guyane, est celle de professionnels migrants qui attribuent à certains de leurs usagers étrangers, au nom de leur identité ethnique, une autochtonie que ne leur reconnaît pas la loi. Enfin, les enjeux de l’accès aux soins en contexte d’immigration s’articulent à l’ensemble des rapports sociaux inégalitaires qui traversent la société guyanaise.Immigration in French Guyana is plural. Caribbean migrants, driven away by poverty and political violence, mix with migrants who left metropolitan France to taste the exotism of this French society in South America. This plurality shapes access to health care, since foreign users meet French professionals who are either native or migrants. These foreigners may be victims of discrimination on the part of native professionals who suspect them of taking advantage of the local health care system. Whereas such discrimination exists elsewhere in France, the situation seems exacerbated in French Guyana by the importance of the migratory flows and socioeconomic difficulties. Migrant

  8. CFD Techniques for Propulsion Applications Panel Symposium (77th), Held in San Antonio, Texas on 27-31 May 1991 (Les Techniques de l’Aerodynamique Numerique pour les Applications aux Propulseurs)

    Science.gov (United States)

    1992-02-01

    la paroi. Cette force est directement lite A un coefficient de frottement donn6 tant que ’dcoulement W’est pas ralenti, sinan elke depend du gradient...montre que dans Ic cms avec pertes, les amplitudes ont des valeurs beaucoup plus 6lev~es que dans le cms sans coefficient de frottement constant aux

  9. Combining histology, stable isotope analysis and ZooMS collagen fingerprinting to investigate the taphonomic history and dietary behaviour of extinct giant tortoises from the Mare aux Songes deposit on Mauritius

    NARCIS (Netherlands)

    van der Sluis, L.G.; Hollund, H.I.; Buckley, M.; de Louw, P.G.B.; Rijsdijk, K.F.; Kars, H.

    2014-01-01

    Taphonomic research of bones can provide additional insight into a site's formation and development, the burial environment and ongoing post-mortem processes. A total of 30 tortoise (Cylindraspis) femur bone samples from the Mare aux Songes site (Mauritius) were studied histologically, assessing par

  10. Dépendance économique aux produits forestiers non ligneux : cas des ménages riverains des forêts de Boulon et de Koflandé, au Sud-Ouest du Burkina Faso

    DEFF Research Database (Denmark)

    Ouédraogo, M; Ouédraogo, D; Thiombiano, T;

    2013-01-01

    Cette étude a pour objectif d’évaluer la dépendance économique des ménages riverains des forêts de Boulon et de Koflandé aux produits forestiers non ligneux (PFNL) et d’identifier les déterminants de cette dépendance. Des enquêtes ont été menées auprès de 583 ménages de 14 villages riverains de ces...... forêts. Les résultats montrent que le revenu moyen annuel par ménage est de 846 800 F CFA avec une contribution de 60% du revenu des cultures et 12% du revenu d’élevage. Les PFNL procurent en moyenne 72 479 F CFA par ménage et par an à près de 93% des ménages enquêtés. La dépendance économique des...... ménages aux PFNL est estimée à 12%. Elle diminue avec le revenu, traduisant une plus grande dépendance des ménages pauvres aux PFNL. Par ailleurs, les hommes sont économiquement moins dépendants des PFNL que les femmes. Les autres déterminants de la dépendance aux PFNL sont le statut d’autochtone, la...

  11. La construction conjointe d’aspects du « vivant » à l’école ; une compréhension éclairée par les rapports aux saviors

    Directory of Open Access Journals (Sweden)

    Pautal Éliane

    2015-01-01

    Full Text Available La recherche présentée interroge le curriculum « en train de se faire » relativement à la coconstruction de connaissances, d’attitudes et de valeurs liées au « vivant », en fonction de la familiarité qu’ont les élèves et le professeur avec certains aspects de ce concept. Pour produire ces explications, nous mobilisons la théorie de l’action conjointe en didactique, croisée avec la notion de rapport aux savoirs qui permet d’être attentif au sens et à la valeur que les acteurs accordent aux savoirs biologiques. L’étude de cas que nous rapportons sollicite une méthodologie mettant en correspondance diverses données issues des séances filmées dans la classe et d’entretiens menés avec le professeur et des élèves. Les résultats indiquent comment les ressources didactiques disponibles, leur agencement et les manières de les mettre en scène conduisent à privilégier certains aspects du «vivant » qui peuvent engager les élèves durablement dans une forme de rapport au « vivant », aux sciences et aux pratiques scientifiques.

  12. Des monastères aux funérailles. La construction d’une relation ethnographique avec des chrétiennes de Damas (Syrie

    Directory of Open Access Journals (Sweden)

    Anna Poujeau

    2009-03-01

    Full Text Available Des monastères aux funérailles. La construction d’une relation ethnographique avec des chrétiennes de Damas (Syrie. En juillet 2004, j’ai assisté aux funérailles d’un jeune homme de la famille au sein de laquelle je vivais à Damas. À l’époque, l’intense émotion suscitée par cet événement empêcha que je m’y intéresse de plus près. Ce n’est que deux ans plus tard, en juillet 2006, que j’ai décidé d’enquêter sur l’un des aspects majeurs de la cérémonie : les lamentations funèbres féminines. Lors de ce dernier terrain, les femmes de la famille que j’interrogeais, que j’accompagnais aux funérailles et dont j’enregistrais les chants m’assignèrent alors une place tout à fait particulière. Puisque, moi aussi, « je m’habillais en noir et je venais aux funérailles », je ne pouvais plus être considérée comme une étrangère. Dès lors, elles firent de moi la fille d’une de leur sœur émigrée à Paris et mariée avec un Français. Ce statut me fut par ailleurs confirmé lorsqu’elles m’attribuèrent une place dans leurs plaisanteries entre sœurs, tantes et neveux matrilatéraux.Dans cet article, je souhaite engager une double réflexion : sur la position et l’implication de l’ethnologue sur un terrain où l’émotion est au premier plan, ainsi que sur la façon dont être assignée à une place dans la parenté de ses informateurs donne enfin toute liberté d’action à l’ethnologue sur son terrain.From monasteries to funerals. The construction of ethnographical relations with the Christians of Damascus (Syria. In July 2004, I attended the funeral of a young man from the family with whom I was staying in Damascus. At the time, the intense emotion provoked by that event prevented me from immediately examining it more closely. It was only two years later, in July 2006, that I decided to study one of the main features of the ceremony: the women’s lamentations. During this

  13. Nicole Fouché. Benjamin Franklin et Thomas Jefferson : Aux sources de l’amitié franco-américaine 1776-1808.

    Directory of Open Access Journals (Sweden)

    Nathalie Caron

    2006-04-01

    Full Text Available Spécialiste des relations franco-américaines, Nicole Fouché propose une comparaison presque terme à terme entre deux Pères fondateurs de renom, Benjamin Franklin et Thomas Jefferson. Ce choix, comme la brièveté de l’ouvrage, le nombre limité de notes, la présence d’une courte bibliographie et l’absence d’index, répond aux exigences de la collection « Biographies américaines », dirigée par Annick Foucrier, dont l’objectif est de « présenter l’histoire des Etats-Unis à travers les vies de deux ...

  14. Le poids de l'apparence dans le monde noir. Un héritage africain à l'heure de la globalisation aux États-Unis

    OpenAIRE

    Berloquin-Chassany, Pascale

    2005-01-01

    Mon travail de thèse de doctorat en sociologie s’est orienté plus concrètement lors du premier Festival International de la Mode Africaine, en novembre 1998. Aux portes du désert de l’Aïr au Niger, Alphadi avait invité des confrères originaires de son continent, mais également Kenzo et Isey Miaké et nombre de collections d’Yves Saint-Laurent, de Trussardi et de Christian Lacroix, entre autres. La présence du maire de Washington et autres personnalités des États-Unis me conduisit de l'autre cô...

  15. « A Nation within Nations » : nationalisme afro-américain et réafricanisation aux États-Unis

    OpenAIRE

    2009-01-01

    L’essor des religions d’origine africaine aux Etats-Unis s’inscrit dans un vaste mouvement politique de réafricanisation de la communauté afro-américaine. En revenant sur l’évolution du nationalisme noir, cet article montre comment ce phénomène de réafricanisation est né dans un contexte de lutte séparatiste des populations afro-américaines pour l’indépendance. Introduisant les notions de communautés transnationales et d’identité ethnique, le processus de réafricanisation de la communauté noi...

  16. L’expérience d’achat impulsif : un essai de modélisation. Une application aux achats impulsifs dans la grande distribution

    OpenAIRE

    Giraud, Magali

    2002-01-01

    Susciter des achats impulsifs est un moyen essentiel pour développer les ventes dans la grande distribution. Toutefois, l'absence de définition consensuelle du concept d'achat impulsif conduit à considérer sous le même terme des comportements d'achats hétérogènes. Cette recherche a pour premier objectif de proposer une définition et un cadre conceptuel de l'achat impulsif fondés sur les recherches qui, en sciences sociales, s'intéressent aux comportements impulsifs en général. Elle démontre l...

  17. Robert LEROUX, Aux fondements de l’industrialisme. Comte, Dunoyer et la pensée libérale en France

    OpenAIRE

    Pranchère, Jean-Yves

    2016-01-01

    L’objectif affiché par l’ouvrage de Robert Leroux est de « combler une importante lacune » de l’histoire des idées (p. 10). Le but est atteint et on ne peut que se féliciter de disposer d’une présentation synthétique – à la fois érudite et accessible aux non-spécialistes – d’un courant trop oublié du libéralisme français : celui de Charles Comte (1782-1837) et de Charles Dunoyer (1786-1862), qui donnèrent au mot de « libéral » son sens classique en récusant les tendances étatistes de la pensé...

  18. Fédéralisme et droits des LGBT aux États-Unis et au Canada : analyse comparatives des politiques

    Directory of Open Access Journals (Sweden)

    Miriam Smith

    2014-12-01

    Full Text Available L’article examine le militantisme LGBT et les résultats des politiques en matière de droit pénal et du mariage entre personnes de même sexe de 1969 à aujourd’hui, dans le cadre d’une analyse comparée du fédéralisme aux États-Unis et au Canada. Nous soutiendrons que le fédéralisme a grandement façonné les politiques publiques relatives aux droits des LGBT. Dans le régime américain, le potentiel d’expansion du fédéralisme a favorisé les changements graduels de politiques dans les États et, parallèlement, les multiples points de véto créés par le système de séparation des pouvoirs conjugués aux compétences conférés aux États dans d’importants domaines de politiques ont entravé ces changements de politiques. Dans le régime canadien, la centralisation des mécanismes de protection des droits de la personne dans la Charte de même que la dynamique descendante de l’exercice du pouvoir dans le régime parlementaire de type Westminster ont facilité les changements de politiques. Le fédéralisme est souvent perçu comme un obstacle à l’adoption de politiques progressistes. La répartition des pouvoirs entrave l’élaboration de politiques cohérentes et prête le flanc à la prolifération de vétos dont peuvent se prévaloir des groupes influents pour freiner le changement. Les critiques de cette perspective arguent depuis longtemps que, même si le fédéralisme multiplie les points de véto, il présente aussi de nombreuses possibilités d’innovation. Ils font valoir que les groupes ont plus de poids dans les régimes fédéraux puisqu’ils peuvent exercer leur influence à deux paliers de gouvernement plutôt qu’à un. Ainsi, un groupe qui ne réussit pas à se faire entendre à l’un des paliers pourra tenter sa chance au second et pourra même dresser un palier contre l’autre pour atteindre ses objectifs stratégiques.

  19. Profils de virulence et de résistance aux B-lactamines de souches cliniques de Klebsiellapneumoniae isolées de sondes endotrachéales

    OpenAIRE

    BELAID, KHADIDJA

    2015-01-01

    La présence étude visait à détecter les facteurs de virulence et de résistance aux B-lactamines des souches cliniques de Kiebsiella pneumoniae isolées des prélèvements à partir des sondes d'aspiration trachéale. Au totale, 10 souches de K. pneumoniae ont été isolées, identifiées, et - testés leurs résistances vis-à-vis de 7 antibiotiques (B-Iactamine). Les antibiotiques qui présentent le plus d'efficacité sont: Imipenème et Cefoxitine. La résistance a l'Ampiciline et Ticarcilli...

  20. Genome-wide identification and expression profiling analysis of the Aux/IAA gene family in Medicago truncatula during the early phase of Sinorhizobium meliloti infection.

    Directory of Open Access Journals (Sweden)

    Chenjia Shen

    Full Text Available BACKGROUND: Auxin/indoleacetic acid (Aux/IAA genes, coding a family of short-lived nuclear proteins, play key roles in wide variety of plant developmental processes, including root system regulation and responses to environmental stimulus. However, how they function in auxin signaling pathway and symbiosis with rhizobial in Medicago truncatula are largely unknown. The present study aims at gaining deeper insight on distinctive expression and function features of Aux/IAA family genes in Medicago truncatula during nodule formation. PRINCIPAL FINDINGS: Using the latest updated draft of the full Medicago truncatula genome, a comprehensive identification and analysis of IAA genes were performed. The data indicated that MtIAA family genes are distributed in all the M. truncatula chromosomes except chromosome 6. Most of MtIAA genes are responsive to exogenous auxin and express in tissues-specific manner. To understand the biological functions of MtIAA genes involved in nodule formation, quantitative real-time polymerase chain reaction (qRT-PCR was used to test the expression profiling of MtIAA genes during the early phase of Sinorhizobium meliloti (S. meliloti infection. The expression patterns of most MtIAA genes were down-regulated in roots and up-regulated in shoots by S. meliloti infection. The differences in expression responses between roots and shoots caused by S. meliloti infection were alleviated by 1-NOA application. CONCLUSION: The genome-wide identification, evolution and expression pattern analysis of MtIAA genes were performed in this study. The data helps us to understand the roles of MtIAA-mediated auxin signaling in nodule formation during the early phase of S. meliloti infection.

  1. Expression profile of PIN, AUX/LAX and PGP auxin transporter gene families in Sorghum bicolor under phytohormone and abiotic stress.

    Science.gov (United States)

    Shen, ChenJia; Bai, YouHuang; Wang, SuiKang; Zhang, SaiNa; Wu, YunRong; Chen, Ming; Jiang, DeAn; Qi, YanHua

    2010-07-01

    Auxin is transported by the influx carriers auxin resistant 1/like aux1 (AUX/LAX), and the efflux carriers pin-formed (PIN) and P-glycoprotein (PGP), which play a major role in polar auxin transport. Several auxin transporter genes have been characterized in dicotyledonous Arabidopsis, but most are unknown in monocotyledons, especially in sorghum. Here, we analyze the chromosome distribution, gene duplication and intron/exon of SbPIN, SbLAX and SbPGP gene families, and examine their phylogenic relationships in Arabidopsis, rice and sorghum. Real-time PCR analysis demonstrated that most of these genes were differently expressed in the organs of sorghum. SbPIN3 and SbPIN9 were highly expressed in flowers, SbLAX2 and SbPGP17 were mainly expressed in stems, and SbPGP7 was strongly expressed in roots. This suggests that individual genes might participate in specific organ development. The expression profiles of these gene families were analyzed after treatment with: (a) the phytohormones indole-3-acetic acid and brassinosteroid; (b) the polar auxin transport inhibitors 1-naphthoxyacetic acids, 1-naphthylphthalamic acid and 2,3,5-triiodobenzoic acid; and (c) abscissic acid and the abiotic stresses of high salinity and drought. Most of the auxin transporter genes were strongly induced by indole-3-acetic acid and brassinosteroid, providing new evidence for the synergism of these phytohormones. Interestingly, most genes showed similar trends in expression under polar auxin transport inhibitors and each also responded to abscissic acid, salt and drought. This study provides new insights into the auxin transporters of sorghum.

  2. Transcriptome profiling of petal abscission zone and functional analysis of an Aux/IAA family gene RhIAA16 involved in petal shedding in rose

    Directory of Open Access Journals (Sweden)

    Yuerong Gao

    2016-09-01

    Full Text Available Roses are one of the most important cut flowers among ornamental plants. Rose flower longevity is largely dependent on the timing of petal shedding occurrence. To understand the molecular mechanism underlying petal abscission in rose, we performed transcriptome profiling of the petal abscission zone during petal shedding using Illumina technology. We identified a total of 2592 differentially transcribed genes (DTGs during rose petal shedding. Gene ontology term enrichment and pathway analysis revealed that major biochemical pathways the DTGs were involved in included ethylene biosynthesis, starch degradation, superpathway of cytosolic glycolysis, pyruvate dehydrogenase and TCA cycle, photorespiration and the lactose degradation III pathway. This suggests that alterations in carbon metabolism are an important part of rose petal abscission. Among these DTGs, approximately 150 genes putatively encoding transcription factors were identified in rose abscission zone. These included zinc finger, WRKY, ERF, and Aux/IAA gene families, suggesting that petal abscission involves complex transcriptional reprogramming. Approximately 108 DTGs were related to hormone pathways, of which auxin and ethylene related DTGs were the largest groups including 52 and 41 genes, respectively. These also included 12 DTGs related to gibberellin and 6 DTGs in jasmonic acid pathway. Surprisingly, no DTGs involved in the biosynthesis/signaling of abscisic acid, cytokinin, brassinosteroid, and salicylic acid pathways were detected. Moreover, among DTGs related to auxin, we identified an Aux/IAA gene RhIAA16 that was up-regulated in response to petal shedding. Down-regulation of RhIAA16 by virus-induced gene silencing in rose promoted petal abscission, suggesting that RhIAA16 plays an important role in rose petal abscission.

  3. « Les citoyens ordinaires face aux discours de l'énergie : l'appropriation d'un problème public »

    Directory of Open Access Journals (Sweden)

    Bouillet Jérémy

    2014-07-01

    Full Text Available L'opinion publique sondée dans les grandes enquêtes témoigne de l'écart entre « pétitions de principe » et réalité au quotidien sur les questions d'énergie et d'environnement. Ce travail propose une explication de la manière dont les « citoyens ordinaires » intègrent des parties de discours sur les questions énergétiques, les ré-agencent et les prennent en compte ou non dans leur vie quotidienne, dans un jeu croisé de contraintes et de contradictions. Il exploite deux jeux de données liés à des forums en ligne organisés, l'un pendant la campagne présidentielle de 2012, moment politique par excellence, et l'autre au cours d'un moment de moindre politisation dans une région énergétiquement vulnérable : PACA. Un des intérêts de ces forums est de proposer aux enquêtés des scènes d'expression dont la publicité varie, faisant ainsi apparaître des écarts entre les principes défendus en « public » montrant ce que la norme doit être, et les pratiques routinières décrites en « privé »: de même ils permettent de faire apparaître des degrés de conflictualité liés aux divers aspects des enjeux énergétiques.

  4. Auxin responsiveness of the MONOPTEROS-BODENLOS module in primary root initiation critically depends on the nuclear import kinetics of the Aux/IAA inhibitor BODENLOS.

    Science.gov (United States)

    Herud, Ole; Weijers, Dolf; Lau, Steffen; Jürgens, Gerd

    2016-01-01

    Primary root formation in early embryogenesis of Arabidopsis thaliana is initiated with the specification of a single cell called hypophysis. This initial step requires the auxin-dependent release of the transcription factor MONOPTEROS (MP, also known as ARF5) from its inhibition by the Aux/IAA protein BODENLOS (BDL, also known as IAA12). Auxin-insensitive bdl mutant embryos and mp loss-of-function embryos fail to specify the hypophysis, giving rise to rootless seedlings. A suppressor screen of rootless bdl mutant seedlings yielded a mutation in the nuclear import receptor IMPORTIN-ALPHA 6 (IMPα6) that promoted primary root formation through rescue of the embryonic hypophysis defects, without causing additional phenotypic changes. Aux/IAA proteins are continually synthesized and degraded, which is essential for rapid transcriptional responses to changing auxin concentrations. Nuclear translocation of bdl:3×GFP was slowed down in impα6 mutants as measured by fluorescence recovery after photobleaching (FRAP) analysis, which correlated with the reduced inhibition of MP by bdl in transient expression assays in impα6 knock-down protoplasts. The MP-BDL module acts like an auxin-triggered genetic switch because MP activates its own expression as well as the expression of its inhibitor BDL. Using an established simulation model, we determined that the reduced nuclear translocation rate of BDL in impα6 mutant embryos rendered the auxin-triggered switch unstable, impairing the fast response to changes in auxin concentration. Our results suggest that the instability of the inhibitor BDL necessitates a fast nuclear uptake in order to reach the critical threshold level required for auxin responsiveness of the MP-BDL module in primary root initiation.

  5. Bioinformatic cis-element analyses performed in Arabidopsis and rice disclose bZIP- and MYB-related binding sites as potential AuxRE-coupling elements in auxin-mediated transcription

    Directory of Open Access Journals (Sweden)

    Berendzen Kenneth W

    2012-08-01

    Full Text Available Abstract Background In higher plants, a diverse array of developmental and growth-related processes is regulated by the plant hormone auxin. Recent publications have proposed that besides the well-characterized Auxin Response Factors (ARFs that bind Auxin Response Elements (AuxREs, also members of the bZIP- and MYB-transcription factor (TF families participate in transcriptional control of auxin-regulated genes via bZIP Response Elements (ZREs or Myb Response Elements (MREs, respectively. Results Applying a novel bioinformatic algorithm, we demonstrate on a genome-wide scale that singular motifs or composite modules of AuxREs, ZREs, MREs but also of MYC2 related elements are significantly enriched in promoters of auxin-inducible genes. Despite considerable, species-specific differences in the genome structure in terms of the GC content, this enrichment is generally conserved in dicot (Arabidopsis thaliana and monocot (Oryza sativa model plants. Moreover, an enrichment of defined composite modules has been observed in selected auxin-related gene families. Consistently, a bipartite module, which encompasses a bZIP-associated G-box Related Element (GRE and an AuxRE motif, has been found to be highly enriched. Making use of transient reporter studies in protoplasts, these findings were experimentally confirmed, demonstrating that GREs functionally interact with AuxREs in regulating auxin-mediated transcription. Conclusions Using genome-wide bioinformatic analyses, evolutionary conserved motifs have been defined which potentially function as AuxRE-dependent coupling elements to establish auxin-specific expression patterns. Based on these findings, experimental approaches can be designed to broaden our understanding of combinatorial, auxin-controlled gene regulation.

  6. Statut phospho-calcique en hémodialyse chronique dans l’Oriental Marocain: évaluation de l’adhésion aux recommandations K/DOQI et KDIGO

    Science.gov (United States)

    Benabdellah, Nawal; Karimi, Ilham; Bentata, Yassamine; Yacoubi, Hicham; Haddiya, Intissar

    2013-01-01

    Les troubles phosphocalciques sont fréquents en hémodialyse chronique. Leurs conséquences justifient une prévention et un traitement adaptés aux recommandations des sociétés savantes. L’objectif de notre étude était de déterminer le statut phosphocalcique de nos patients hémodialysés chroniques (HDC) et l’évaluation des taux de conformité des indicateurs aux recommandations K/DOQI et KDIGO. Ainsi, nous avons réalisé une étude transversale incluant les 83 patients HDC du centre d’hémodialyse de l’hôpital Al Farabi d’Oujda. L’âge moyen de nos patients était de 49.8± 15.6 ans. Une prédominance masculine a été notée. La conformité des indicateurs du bilan phosphocalcique chez nos patients hémodialysés chroniques par rapport aux recommandations KDIGO était de l’ordre de 21.6%. Le pourcentage des patients ayant des données phosphocalciques conformes aux cibles recommandées par les K/DOQI était Les patients répondants simultanément aux quatres critères recommandés par les K/DOQI n’étaient que 8.4%. PMID:24570784

  7. Silicon P.I.N. Junctions used for studies of radiation damage; Etude de l'irradiation aux neutrons rapides du silicium au moyen de jonctions P.I.N

    Energy Technology Data Exchange (ETDEWEB)

    Lanore, J. [Commissariat a l' Energie Atomique, Fontenay-aux-Roses (France). Centre d' Etudes Nucleaires

    1964-06-01

    Irradiation of silicon P.I.N. junction has been studied primarily for the purpose of developing a radiation damage dosimeter, but also for the purpose of investigating silicon itself. It is known that the rate of recombination of electrons and holes is a linear function of defects introduced by neutron irradiation. Two methods have been used to measure that rate of recombination: forward characteristic measurements, recovery time measurements. In order to explain how these two parameters depend on recombination rate we have given a theory of the P.I.N. junction. We have also given an idea of the carrier lifetime dependence versus temperature. Annealing effects in the range of 70 to 700 K have also been studied, we found five annealing stages with corresponding activation energies. As an application for these studies, we developed a radiation damage dosimeter with which we made several experiments in facilities such as Naiade or Marias. (author) [French] L'irradiation de structures P.I.N. etait faite dans le but d'etudier principalement la mise au point d'un dosimetre a ''radiation damage'' et aussi pour etudier plus profondement le silicium lui-meme. On sait que le taux de recombinaison electrons-trous est une fonction lineaire du taux de defauts introduits par irradiation aux neutrons. Deux methodes ont ete utilisees pour atteindre ce taux de recombinaison: mesures de la caracteristique directe, mesures du temps de retournement. Pour expliquer de quelle facon ces parametres dependent du taux de recombinaison. Nous avons donne une theorie de la jonction P.I.N. Nous avons aussi donne l'allure des variations du temps de vie des porteurs en fonction de la temperature. Nous avons d'autre part effectue des recuits entre 70 et 700 K, domaine dans lequel nous avons trouve cinq etapes de ''guerison'' avec les energies d'activation correspondantes. En application de ces etudes nous avons mis ou point un

  8. Application of the decree 2910 for coal fired boilers; Application de l`arrete 2910 aux chaudieres a charbon

    Energy Technology Data Exchange (ETDEWEB)

    Hing, K. [CDF Energie, Charbonnages de France, 92 - Rueil-Malmaison (France)

    1997-12-31

    The impacts of the new French decree 2910 concerning the classification of all combustion equipment with regards to their energy sources, energy efficiency and pollution control, on 2 to 20 MW coal-fired boilers, are discussed, with emphasis on their pollutant emissions (SO{sub 2}, NO{sub x} and ashes). The compositions of several coals is presented and the various types of coal-fired boilers adapted to the new decree are presented: automatic boilers, dense fluidized bed boilers, vibrating and chain grids with fume tubes and water tubes

  9. Alternative energies; Energies alternatives

    Energy Technology Data Exchange (ETDEWEB)

    Bonal, J.; Rossetti, P

    2007-07-01

    The earth took millions years to made the petroleum, the gas the coal and the uranium. Only a few centuries will be needed to exhaust these fossil fuels and some years to reach expensive prices. Will the wold continue on this way of energy compulsive consumption? The renewable energies and some citizen attitudes are sufficient to break this spiral. This book proposes to discuss these alternative energies. It shows that this attitude must be supported by the government. It takes stock on the more recent information concerning the renewable energies. it develops three main points: the electricity storage, the housing and the transports. (A.L.B.)

  10. Wind energies; Energies eoliennes

    Energy Technology Data Exchange (ETDEWEB)

    Martin, J.

    1997-01-01

    The main part of this study is focused on the wind turbine, including a full overview of turbine types, with in each case advantages, disadvantages and conditions of use. Subsidiary elements are mentioned, for support or energy conversion (into electricity, water pumping, heat generation). A glimpse is added to energy storage, and an economic balance is stroke. (D.L.)

  11. Didier Combeau, Des Américains et des armes à feux. Violence et démocratie aux Etats-Unis. Saul Cornell, A Well-Regulated Militia : The Founding Fathers and the Origins of Gun Control in America.

    Directory of Open Access Journals (Sweden)

    Renaud Pacoud

    2008-07-01

    Full Text Available Deux ouvrages différents dans leur approche mais également passionnants permettent de saisir l’évolution du débat sur les armes à feu aux États-Unis. Des Américains et des armes à feux. Violence et démocratie aux Etats Unis de Didier Combeau rend compte de la relation complexe que les Américains entretiennent avec les armes à feu depuis la fondation de la nation et de la polémique contemporaine sur la question du droit aux armes. A Well-Regulated Militia : The Founding Fathers and the Origins...

  12. Conception and test of an integrated circuit (ASIC): application to multiwire chambers and photomultipliers of the GRAAL experience; Conception et test d`un circuit integre (ASIC): application aux chambres multifils et aux photomultiplicateurs de l`experience GRAAL

    Energy Technology Data Exchange (ETDEWEB)

    Bugnet, H.

    1995-11-21

    The nuclear physics project GRAAL (GRenoble Anneau Accelerateur Laser) located at the European Synchrotron Radiation Facility (ESRF) in Grenoble produces a high energy photon beam with a maximum energy of 1.5 GeV. This gamma beam is obtained by Compton backscattering and can be polarized easily. It permits to probe, in an original way, the structure of the nucleon. The associated detector system includes multiwire proportional chambers and scintillator hodoscopes. A kit of six ASICs (Application Specific Integrated Circuit) has been developed and used for the signal processing and data conditioning up to the level of the data acquisition. This integrated electronics can be mounted right on the detectors. Obvious advantages, due to the reduction of the length of the wires and the number of connections, are an improvement of the signal quality and an increase of the reliability. The Wire Processor (WP), ASIC designed and tested during this thesis, treats the signals from the chamber wires and the photomultipliers. In one chip, there are two identical channels permitting the amplification, the amplitude discrimination, the generation of a programmable delay and the writing in a two state memory in case of coincidence with an external strobe signal. The measurement of the multiwire chamber efficiency demonstrates the functioning of the WP, the data conditioning electronics, the data acquisition and the chamber itself. (author). 62 refs., 111 figs., 13 tabs.

  13. Energy Handbook; Energy Vademecum

    Energy Technology Data Exchange (ETDEWEB)

    Israels, E.; Stofberg, F.

    2010-05-15

    This is the third and revised print of the Handbook energy-conscious designing of new dwellings. The handbook addresses the latest developments in the field of developing, designing and realizing of new dwellings. [Dutch] Dit is een derde en sterk herziene druk van het 'Vademecum energiebewust ontwerpen van nieuwbouwwoningen', dat in 1992 verscheen. In het 'EnergieVademecum' komen de nieuwste ontwikkelingen op het gebied van energiebewust ontwikkelen, ontwerpen en realiseren van nieuwbouwwoningen aan bod.

  14. Cohabitation sociale et ordre public aux Champs-Élysées :Gestion et appropriation du carré des jeux (1700-1830

    Directory of Open Access Journals (Sweden)

    Véronique Laporte

    2011-08-01

    Full Text Available Au 18e siècle et au début du 19e siècle, les Champs-Élysées sont ouverts à tous et attirent une clientèle diversifiée. Des joueurs issus d’horizons très différents s’y retrouvent pour pratiquer différentes activités, telles que la longue paume, les boules ou les barres. Afin que les promeneurs ne soient pas importunés par les jeux, ces derniers sont confinés dans une vaste clairière servant également lors des revues militaires et des fêtes publiques. Les autorités ont une volonté réelle d’offrir aux visiteurs des espaces de jeux, mais elles craignent aussi les débordements susceptibles d’être créés par les amusements. En effet, qu’importe si les joueurs sont nobles ou écoliers, la même crainte transparaît. Il s’agit de la peur des attroupements. C’est pourquoi les autorités tentent de diminuer l’affluence aux Champs-Élysées en contrôlant le nombre et la nature des jeux pratiqués dans cet espace public.At the end of the 18th century and the beginning of the 19th century, the Champs-Élysées were open to people of all extractions and attracted indeed a diversified public. Players of different social origins gathered for various collective games such as the longue paume, bowls, or "les barres". In order not to disturb the strollers, the games were confined in a clearing also used for military reviews and public celebrations. Authorities had a will to offer playing spaces to visitors, but were at the same time concerned by the possibility of public overflowings. Whether they be aristocrats or schoolboys, the same apprehension comes out: the fear of gatherings. This is the why the authorities attempted to reduce the crowds on the Champs-Élysées by controlling the number and the nature of the games practiced in that public place.

  15. CO{sub 2} direct cycles suitable for AGR type reactors; Cycles directs de gaz carbonique applicables aux reacteurs du genre AGR

    Energy Technology Data Exchange (ETDEWEB)

    Maillet, E. [Commissariat a l' Energie Atomique. Centre d' Etudes Nucleaires de Saclay, 91 - Gif-sur-Yvette (France)

    1967-10-01

    The perspectives given by the gas turbines under pressure, to build simple nuclear power plants and acieving significantly high yield, are specified. The CO{sub 2} is characterised by by good efficiency under moderate temperature (500 to 750 Celsius degrees), compactness and the simpleness of machines and the safe exploitation (supply, storage, relief cooling, thermosyphon). The revision of thermal properties of the CO{sub 2} and loss elements show that several direct cycles would fit in particular to the AGR type reactors. Cycles that would diverge a little from classical models and able to lead to power and heat generation can lead by simple means to the best results. Several satisfying solutions present for the starting up, the power regulation and the stopping. The nuclear power plant components and the functioning safety are equally considered in the present report. The conclusions stimulate the studies and realizations of carbon dioxide gas turbines in when approprite. [French] Les perspectives offertes par la turbine a gaz sous pression, pour construire des centrales nucleaires simples et de rendement progressivement eleve, se precisent actuellement. le CO{sub 2} se distingue par sa bonne efficacite a temperature moderee (500 a 750 degres celsius), la compacite et la simplicite des machines, et la surete qu'il apporte a l'exploitation ( approvisionnement, stockage, refroidissement de secours, thermosiphon). La revision des proprietes thermophysiques du CO{sub 2} et des elements de pertes montre que divers cycles directs conviendraient en particulier aux reacteurs agr ou derives. Des cycles s'ecartant peu des modeles classiques, et se pretant ulterieurement a la production simultanee d'electricite et de chaleur, peuvent conduire par des moyens simples aux meilleurs resultats d'ensemble. Plusieurs solutions satisfaisantes se presentent pour le demarrage, le reglage de la puissance et l'arret. Les composants de la centrale et la

  16. Research and photovoltaic industry at the United States; Recherche et industrie photovoltaique (PV) aux Etats-Unis

    Energy Technology Data Exchange (ETDEWEB)

    Lerouge, Ch.; Herino, R.; Delville, R.; Allegre, R

    2006-06-15

    For a big country as the United States, the solar energy can be a solution for the air quality improvement, the greenhouse gases fight and the reduction of the dependence to the imported petroleum and also for the economic growth by the increase of the employment in the solar industry sector. This document takes stock on the photovoltaic in the United States in the industrial and research domains. The american photovoltaic industry is the third behind the Japan and the Germany. (A.L.B.)

  17. Report made on behalf of the commission of foreign affairs about the project of law, adopted by the Senate, giving permission to the approval of the agreement between the French government and the international organization for thermonuclear fusion energy ITER, relative to the head office of ITER organization and to the privileges and immunities of ITER organization in the French territory; Rapport fait au nom de la commission des affaires etrangeres sur le projet de loi, adopte par le senat, autorisant l'approbation de l'accord entre le Gouvernement de la Republique francaise et l'Organisation internationale ITER pour l'energie de fusion relatif au siege de l'Organisation ITER et aux privileges et immunites de l'Organisation ITER sur le territoire francais

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2008-02-15

    The will of building up an international thermonuclear experimental reactor (ITER) gathers since several years the European community of atomic energy (Euratom), Japan, the USA, and Russia, next followed by China, South Korea and, since 2005, by India. The agreement signed in Paris between these seven parties on November 21, 2006 entrusted the international organization ITER with the realization of this project. The implications of the ITER project are enormous both in their scientific and in their economical aspects. France has a particular position in this project since the head office of ITER organisation is sited at Saint-Paul-lez-Durance and the tokamak will be built at Cadarache. Therefore, an agreement has been signed between ITER organization and the French government. The approval of this agreement is the object of this project of law. The document presents first the principle, challenge and stakes of the ITER project and the long negotiations that have led to chose France for the setting up of the research facility. Then, it presents the agreement of November 7, 2007, which fixes the general framework of the conditions necessary to the achievement of the project. The agreement comprises the classical rules, privileges and immunities of any international organization sited on the French ground, plus some more specific dispositions in particular in the domain of management of the wastes generated by the facility. (J.S.)

  18. Lutte contre la piraterie : faut-il faire appel aux sociétés de sécurité privées ?

    Directory of Open Access Journals (Sweden)

    2009-10-01

    Full Text Available Le point de vue d’un armateur françaisEric Frécon : Quel est l’environnement juridique dans lequel opèrent les armateurs soucieux de protéger leur navire avec des hommes en armes ?Sur un navire, dans les eaux nationales d’un pays, la protection armée s’effectue dans le cadre du droit maritime dudit pays. Ces eaux nationales s’entendent sans contestation aux douze nautiques mais dans certains cas, comme aux Etats-Unis, elles sont prolongées jusqu’à la limite de la ZEE soit 200 milles. Ainsi, d...

  19. Statut phospho-calcique en hémodialyse chronique dans l’Oriental Marocain: évaluation de l’adhésion aux recommandations K/DOQI et KDIGO

    OpenAIRE

    Benabdellah, Nawal; Karimi, Ilham; Bentata, Yassamine; Yacoubi, Hicham; Haddiya, Intissar

    2013-01-01

    Les troubles phosphocalciques sont fréquents en hémodialyse chronique. Leurs conséquences justifient une prévention et un traitement adaptés aux recommandations des sociétés savantes. L’objectif de notre étude était de déterminer le statut phosphocalcique de nos patients hémodialysés chroniques (HDC) et l’évaluation des taux de conformité des indicateurs aux recommandations K/DOQI et KDIGO. Ainsi, nous avons réalisé une étude transversale incluant les 83 patients HDC du centre d’hémodialyse d...

  20. Concentration des services de santé, contraintes de mobilité et difficultés d’accès aux soins dans la métropole d’Oran

    OpenAIRE

    Rebouha, Fafa

    2011-01-01

    L’objet de ce travail, basé sur une approche quantitative et qualitative, est d’analyser les conditions d’accès des populations démunies aux soins dans la métropole d’Oran. Mieux connaître les inégalités sociales et spatiales d’accès aux soins peut contribuer au développement durable du territoire urbain en offrant de meilleures conditions de vie à chacun. Dans cet objectif, il s’agit en premier lieu de présenter les caractéristiques de l’offre sanitaire dans la wilaya d’Oran selon les statis...

  1. Enseigner la littératie aux personnes présentant une déficience intellectuelle modérée à sévère

    OpenAIRE

    2016-01-01

    Ce travail de mémoire aborde la thématique de la littératie enseignée aux personnes présentant une déficience intellectuelle modérée à sévère. Son objectif était de procéder de manière non exhaustive, à une revue de la littérature traitant de ce sujet pour en tirer des recommandations fondées par la recherche. Ainsi, à partir de cet inventaire, un guide pratique destiné aux professionnels chargés de l’enseignement littéracique a été rédigé : il donne d’abord des renseignements généraux et ens...

  2. Life cycle assessment applied to wastewater treatment; Analyse de cycle de vie appliquee aux systemes de traitement des eaux usees

    Energy Technology Data Exchange (ETDEWEB)

    Renou, S.

    2006-01-15

    Nowadays, the environmental performances of wastewater treatment systems are not properly analyzed. Thus, the development of an exhaustive and reliable method is needed to help stakeholders to choose the best environmental solutions. Life cycle assessment (LCA) was selected as a starting point to answer this problem. LCA has been tested. This tool is essential to analyze the environmental performances of wastewater treatment systems. In order to fulfill our goal, the best compromise seems to be the association of LCA, to assess global impacts, with others methodologies, to assess local impacts. Finally, a software has been developed to compare urban sludge treatment and recovering process trains. Two impacts, energy and greenhouse effect, are currently included in. The software and its development steps are described and illustrated through two case studies. This tool has made LCA easier to apply and more useful to wastewater field stakeholders. (author)

  3. Dimensionnement des composants magnétiques d'un convertisseur DC/DC boost entrelacé tolérant aux défauts pour des applications véhicule électrique à pile à combustible

    OpenAIRE

    GUILBERT, Damien

    2014-01-01

    International audience; Ces dernières années, la tolérance aux défauts a profité d'un intérêt croissant de la part de la communauté scientifique internationale, en particulier pour les convertisseurs DC/DC. Dans le cas des convertisseurs DC/DC, la tolérance aux défauts se présente sous deux formes : une architecture et/ou une stratégie de contrôle tolérant aux défauts. Dans cet article, l'étude se concentre sur un convertisseur DC/DC entrelacé offrant une architecture naturelle tolérante aux ...

  4. Energy options?; Energie opties?

    Energy Technology Data Exchange (ETDEWEB)

    Van Sark, W. (ed.)

    2006-05-15

    March 2006 the so-called Options Document was published by the Energy research Centre of the Netherlands (ECN) and the Netherlands Environmental Assessment Agency (MNP). The document is an overview of technical options to reduce energy consumption and emission of greenhouse gases up to 2020. Next to a brief summary of the document a few reactions and comments on the contents of the document are given. [Dutch] Maart 2006 publiceerde het Energieonderzoek Centrum Nederland (ECN) en het Milieu- en Natuurplanbureau (MNP) het zogenaamde Optiedocument energie en emissies 2010-2020. Daarin wordt een overzicht gegeven van de technische mogelijkheden voor vermindering van het energieverbruik en de uitstoot van broeikasgassen en luchtverontreinigende stoffen tot 2020. Naast een korte samenvatting van het document worden enkele reacties gegeven op de inhoud.

  5. Generation d'impulsions breves utilisant la non-linearite associee aux porteurs de charge libres dans des semi-conducteurs

    Science.gov (United States)

    Richard, Isabelle

    Dans cette these, nous utilisons la non-linearite associee aux porteurs de charge libres generes par absorption multi-photonique dans des semi-conducteurs pour produire des impulsions breves dans l'infrarouge moyen. Nous proposons d'abord la methode de generation par suppression de la transmission et auto-defocalisation, ou le faisceau incident a l'angle de Brewster genere les porteurs de charge libres, creant un profil d'indice qui defocalise le faisceau. L'impulsion resultante presente un temps de montee calque sur l'impulsion initiale, suivie d'une coupure abrupte. En polarisation TE, on obtient le decoupage par effet d'etalon ou le faisceau est incident sur un etalon oriente sur un minimum de transmission; le debut de l'impulsion est reflechi. Le changement d'indice accompagnant la creation de porteurs de charge libres syntonise la transmission de l'etalon et seule la partie centrale de l'impulsion est transmise. Enfin, le decoupage peut aussi s'effectuer en configuration pompe-sonde; un faisceau continu (sonde) est incident sur un etalon simultanement soumis a l'illumination d'une d'impulsion breve (pompe). Cette derniere genere des porteurs de charge libres, conduisant a un glissement de la frequence instantanee de la sonde. Le faisceau est envoye dans un filtre spectral qui ne transmet que la portion ayant subi un important glissement de frequence.

  6. Les Méduses dans la Marée de l’Histoire: L’Anse aux Meadows, Nan Sdins and Cultural Heritage Agendas

    Directory of Open Access Journals (Sweden)

    Philip Hayward

    2008-11-01

    Full Text Available This paper reflects upon the relation of island communities to global cultural heritage agendas through discussion of two particular examples, the first two island locations successfully nominated by the Canadian government for UNESCO World Heritage listing: L’Anse aux Meadows, on Newfoundland, and Nan Sdins (Ninstints on SGang Gwaii . This reflection involves discussion of the motives and discourses that led to their formal establishment as cultural heritage sites and those that have come into play in subsequent social inscriptions and interpretations. This line of inquiry intersects with – and is illuminated by - a consideration of the spatial contexts of the island networks that have facilitated particular moments upon which their heritage status is based. In particular, I refer to their relation to sea-lanes and coastal/inter-island lines of contact that are, in turn, predicated on particular moments of climatic, navigational and socio-economic history. The paper concludes by offering a point of mediation between traditional concepts of heritage agendas and socio-cultural development in island communities pertinent to the development of Island Studies as an activist enterprise.

  7. La science au(x miroir (s du prince. Savoir et pouvoir dans l'espace arabo-musulman d'hier et d'aujourd'hui

    Directory of Open Access Journals (Sweden)

    Abdel Wedoud Ould Cheikh

    2009-05-01

    Full Text Available Le sultan et le savant sont deux figures centrales de la « culture sultanienne » entendue comme un champ de normes et de valeurs présentant une certaine unité dans le monde arabo-musulman. Il y a entre ces deux figures une tension fondamentale, le clerc-savant étant seul autorisé à sermonner le détenteur du pouvoir au nom du savoir et de la justice. Dans la réalité actuelle des pays arabo-musulmans — illustrée ici par le cas de la Mauritanie —, la massification d'un enseignement fortement imprégné de tradition en même temps que socialement dévalué contribue sans doute à l'émergence d'une mouvance contestataire islamiste qui s'inscrit, sur un mode collectif, dans la continuité des admonestations du clerc censeur s'opposant aux dérives du sultan.

  8. La modélisation graphique de phénomènes émergents pour répondre aux besoins de la prospective

    Directory of Open Access Journals (Sweden)

    Laure Casanova Enault

    2017-01-01

    Full Text Available La modélisation graphique de scénarios prospectifs développés dans le programme Territoire durable 2030 piloté par le Ministère de l’Écologie, du Développement Durable et de l’énergie (MEDDE a été l’occasion d’interroger l’ajustement de la méthode aux besoins de la prospective. L’enjeu réside dans l’exploration des modes de représentation de deux thématiques difficiles à appréhender par la méthode et qui sont pourtant devenues décisives dans la compréhension de l’évolution des territoires du fait de la généralisation du référentiel de développement durable : l’environnement et la gouvernance.

  9. Negative phototropism is seen in Arabidopsis inflorescences when auxin signaling is reduced to a minimal level by an Aux/IAA dominant mutation, axr2.

    Science.gov (United States)

    Sato, Atsuko; Sasaki, Shu; Matsuzaki, Jun; Yamamoto, Kotaro T

    2015-01-01

    Inflorescences of a dominant mutant of Arabidopsis Aux/IAA7, axr2, showed negative phototropism with a similar fluence response curve to the positive phototropism of wild-type stems. Application of a synthetic auxin, NAA, and an inhibitor of polar auxin transport, NPA, increased and decreased respectively the magnitude of the phototropic response in the wild type, while in axr2 application of NAA reduced the negative phototropic response and NPA had no effect. Decapitation of the apex induced a small negative phototropism in wild-type stems, and had no effect in axr2 plants. Inflorescences of the double mutants of auxin transporters, pgp1 pgp19, showed no phototropic response, while decapitation resulted in a negative phototropic response. These results suggest that negative phototropism can occur when the level of auxin or of auxin signaling is reduced to a minimal level, and that in plant axial organs the default phototropic response to unilateral blue light may be negative. Expression of axr2 protein by an endodermis-specific promoter resulted in agravitropism of inflorescences in a similar way to that of axr2, but phototropism was normal, confirming that the endodermis does not play a critical role in phototropism.

  10. L’octroi de crédits aux femmes entrepreneuses libanaises par les banquiers : le cas du dispositif Kafalat

    Directory of Open Access Journals (Sweden)

    Inaya Wahidi

    2016-03-01

    Full Text Available L’accès au crédit bancaire sans garantie est quasi impossible au Liban, d’où le dispositif Kafalat qui représente une solution face à cette difficulté. Selon la littérature, l’entrepreneuriat des femmes souffre de discrimination par rapport aux hommes quant à l’octroi de crédits bancaires. Notre objectif est d’essayer de voir dans quelle mesure cette situation existe au Liban. L’étude exploratoire conduite par entretiens semi-directifs auprès des banquiers exclusivement fournit les premiers éléments sur le profil de ces femmes entrepreneuses libanaises et sur la discrimination éventuelle qui pourrait exister du fait de leur sexe pour l’obtention de crédits bancaires. Les résultats semblent montrer que les banquiers ne font pas de distinction entre les entrepreneurs hommes ou femmes, même si les entrepreneuses ont peut-être moins d’informations concernant les garanties offertes par le dispositif Kafalat et sont souvent soutenues par leur mari qui accepte une hypothèque comme garantie du crédit demandé par leur femme ou qui passe par leur femme pour obtenir le crédit nécessaire au développement de leur propre entreprise.

  11. L’alternance dans une formation professionnelle universitaire. De l’idéal épistémologique aux contradictions pédagogiques

    Directory of Open Access Journals (Sweden)

    Hugues Pentecouteau

    2012-04-01

    Full Text Available L’ouverture de l’université française sur le monde du travail constitue l’un des faits marquants de l’histoire du système universitaire au cours des deux dernières décennies. Le développement des formations professionnelles, du nombre de stages effectués par des étudiants et des conventions passées avec des partenaires professionnelles ont contribué à modifier le paysage de la formation diplômante. En développant des formations par alternance, l’université s’est engagée dans des formes pédagogiques qui nécessitent de penser autrement l’articulation entre la théorie et la pratique. L’objet de cette contribution est de questionner de manière critique différentes formes d’alternance et d’illustrer à partir d’une expérience d’alternance intégrative menée dans une formation aux métiers de la formation.

  12. Energy Technology.

    Science.gov (United States)

    Eaton, William W.

    Reviewed are technological problems faced in energy production including locating, recovering, developing, storing, and distributing energy in clean, convenient, economical, and environmentally satisfactory manners. The energy resources of coal, oil, natural gas, hydroelectric power, nuclear energy, solar energy, geothermal energy, winds, tides,…

  13. Energy intermittency

    CERN Document Server

    Sorensen, Bent

    2014-01-01

    The first book to consider intermittency as a key point of an energy system, Energy Intermittency describes different levels of variability for traditional and renewable energy sources, presenting detailed solutions for handling energy intermittency through trade, collaboration, demand management, and active energy storage. Addressing energy supply intermittency systematically, this practical text:Analyzes typical time-distributions and intervals between episodes of demand-supply mismatch and explores their dependence on system layouts and energy source characteristicsSimulates scenarios regar

  14. Energy sustainability through green energy

    CERN Document Server

    Sharma, Atul

    2015-01-01

    This book shares the latest developments and advances in materials and processes involved in the energy generation, transmission, distribution and storage. Chapters are written by researchers in the energy and materials field. Topics include, but are not limited to, energy from biomass, bio-gas and bio-fuels; solar, wind, geothermal, hydro power, wave energy; energy-transmission, distribution and storage; energy-efficient lighting buildings; energy sustainability; hydrogen and fuel cells; energy policy for new and renewable energy technologies and education for sustainable energy development

  15. Renewable energy.

    Science.gov (United States)

    Destouni, Georgia; Frank, Harry

    2010-01-01

    The Energy Committee of the Royal Swedish Academy of Sciences has in a series of projects gathered information and knowledge on renewable energy from various sources, both within and outside the academic world. In this article, we synthesize and summarize some of the main points on renewable energy from the various Energy Committee projects and the Committee's Energy 2050 symposium, regarding energy from water and wind, bioenergy, and solar energy. We further summarize the Energy Committee's scenario estimates of future renewable energy contributions to the global energy system, and other presentations given at the Energy 2050 symposium. In general, international coordination and investment in energy research and development is crucial to enable future reliance on renewable energy sources with minimal fossil fuel use.

  16. Energy resources

    CERN Document Server

    Simon, Andrew L

    1975-01-01

    Energy Resources mainly focuses on energy, including its definition, historical perspective, sources, utilization, and conservation. This text first explains what energy is and what its uses are. This book then explains coal, oil, and natural gas, which are some of the common energy sources used by various industries. Other energy sources such as wind, solar, geothermal, water, and nuclear energy sources are also tackled. This text also looks into fusion energy and techniques of energy conversion. This book concludes by explaining the energy allocation and utilization crisis. This publ

  17. Understanding Energy

    Science.gov (United States)

    Menon, Deepika; Shelby, Blake; Mattingly, Christine

    2016-01-01

    "Energy" is a term often used in everyday language. Even young children associate energy with the food they eat, feeling tired after playing soccer, or when asked to turn the lights off to save light energy. However, they may not have the scientific conceptual understanding of energy at this age. Teaching energy and matter could be…

  18. Solar Energy.

    Science.gov (United States)

    Eaton, William W.

    Presented is the utilization of solar radiation as an energy resource principally for the production of electricity. Included are discussions of solar thermal conversion, photovoltic conversion, wind energy, and energy from ocean temperature differences. Future solar energy plans, the role of solar energy in plant and fossil fuel production, and…

  19. Energy Demand

    NARCIS (Netherlands)

    Stehfest, E. et al.

    2014-01-01

    Key policy issues – How will energy demand evolve particularly in emerging and medium- and low- income economies? – What is the mix of end-use energy carriers to meet future energy demand? – How can energy efficiency contribute to reducing the growth rate of energy demand and mitigate pressures on t

  20. La femme écrivain hébraïque narre aux enfants Israeli Women Writing for Children: Devora Omer an Author of Young Literature ספרות נוער כתובה על ידי נשים : דבורה עומר

    Directory of Open Access Journals (Sweden)

    Dorit Shilo

    2011-11-01

    Full Text Available Les auteurs de la littérature israélienne pour enfants. Dans la première partie de l'article, j'explore les premiers jours de la littérature hébraïque pour enfants (XIXe siècle. Je tiens à souligner que ce sont les auteurs masculins qui ont régné sur ce genre littéraire et qu’à travers le XXe siècle un phénomène intriguant apparaît: les femmes commencent à écrire des oeuvres littéraires pour les enfants, et deviennent professionnelles dans ce domaine.La deuxième partie de l'article est dédiée à Devora Omer (né en 1932 qui est l'une des romancières les plus populaires et appréciées chez les enfants dans la littérature israélienne contemporaine. En particulier, j'examine le protagoniste féminin, Zohara, dans son œuvre Le’eov ad mavet (Aimer jusqu'à la mort, 1980, par rapport à la représentation de son apparence physique et à son monologue intérieur. Je suggère que même si elle est intégrée dans l'armée et donc « égale » aux hommes, le personnage principal du roman entretient la conception de l'auteur de la féminité, c'est-à-dire être physiquement attractive, même dans la bataille, pendant qu’elle est obligée d'accomplir les tâches ménagères, traditionnellement considérées comme le travail des femmes. En conclusion, la représentation de Zohara renvoie aux conflits entre les sexes dans la société israélienne contemporaine.In the first part of the article, I explore the early days of Hebrew children’s literature (19th century. I emphasize that it was male authors who ruled this literary genre and throughout the 20th century an intriguing phenomenon appears: women start writing literary works for children, becoming professionals in the domain. The second part of the article is dedicated to Devora Omer (born 1932 who is one of the most popular and well-appreciated children’s novelists in contemporary Israeli literature. In particular, I examine the female protagonist, Zohara, in

  1. Les géographes - climatologues français et le changement climatique aux échelles régionales

    Directory of Open Access Journals (Sweden)

    Gérard Beltrando

    2010-04-01

    Full Text Available En France, sur le sujet du changement climatique et quel que soit son origine, les géographes - climatologues se sont majoritairement intéressés à la description et l’explication de la variabilité du climat à diverses échelles de temps et d’espace sur des périodes écoulées. Ils se sont moins investis sur les formes d’adaptations tenant compte des résultats des simulations du climat futur, tel qu’il est envisagé à partir des calculs obtenus par les modèles numériques du climat. Cette frilosité s’explique en partie par le manque de précision et de fiabilité accordé aux résultats produits par ces modèles, aux échelles des territoires occupés par les sociétés humaines, mais aussi parce que les travaux de géographes montrent depuis longtemps que les sociétés humaines - indépendamment du changement climatique sous l’effet des gaz à effet de serre additionnels - ont une part directe dans bien des catastrophes qui les affectent (construction dans des zones inondables, production agricole dans des régions où la pluviométrie peut être insuffisante certaines années…. Les géographes-climatologues, commencent à utiliser des nouvelles sorties de modèle à des échelles plus opérationnelles pour proposer des formes d’adaptations spécifiques à chaque territoire et à chaque secteur économique. Ces recherches prospectives sont réalisées en tenant compte à la fois de la part d’incertitude des résultats produits par des modèles numériques, mais aussi des particularités des groupes sociaux et des milieux physiques dans lesquels s’inscrivent ces changements. Cela est un préalable nécessaire à toutes formes de réflexion approfondies sur l'identification des facteurs d’adaptation.In France, on the topic of climate change, the geographer climatologists are focused on the description and explanation of climate variability at various temporal and spatial scales on last period. They are less

  2. Des psy aux rabbins – pour une pensée de la Shoah From Psychologists to Rabbis – rethinking the Holocaust

    Directory of Open Access Journals (Sweden)

    Nathalie Zajde

    2010-03-01

    Full Text Available Le monde juif traditionnel contemporain, c’est-à-dire celui qui recourt aux concepts de la Thora pour se penser et penser les événements, ne s’est que fort peu intéressé à la Shoah. Les quelques interprétations proposées sont souvent anciennes – bon nombre datent de l’époque de la Shoah – et ne donnent pas lieu à des innovations ; elles n’intéressent que peu les penseurs de la tradition juive contemporaine au regard de leur foisonnante production. De leur côté, la psychiatrie, la psychologie et même la psychanalyse s’intéressent depuis fort longtemps à la Shoah et aux internés en camp de concentration – le point le plus marquant étant la création du Syndrome du survivant des camps de concentration à la fin des années 1950. Mais ni le fameux syndrome, ni pratiquement aucun des textes, des manuels, des articles traitant des survivants de la Shoah, ne mentionnent l’identité juive des patients de manière scientifiquement pertinente. Pourquoi chercher à combler ces lacunes de part et d’autre ? Pourquoi a-t-on besoin de faire se rencontrer la discipline « psy » et l’univers de la pensée juive ? L’auteur, responsable, au Centre Georges Devereux à l’Université de Paris 8, de dispositifs cliniques de recherche en psychothérapie des survivants et descendants de survivants de la Shoah, expose les raisons de cette réflexion et soumet des propositions.The contemporary Jewish world, namely the one which bases itself on concepts from the Torah in order to comprehend itself and events, has taken a minimal interest in the Holocaust. The few interpretations it has put forward are often old – many dating from the period of the Holocaust, with few innovations – and they have little interest for contemporary Jewish scholars, if one looks at the latter’s abundant output. On their side, psychiatry, psychology and even psycho-analysis have, for a long time, taken an interest in the Holocaust and

  3. From Psychologists to Rabbis – rethinking the Holocaust Des psy aux rabbins – pour une pensée de la Shoah

    Directory of Open Access Journals (Sweden)

    Nathalie Zajde

    2010-03-01

    Full Text Available The contemporary Jewish world, namely the one which bases itself on concepts from the Torah in order to comprehend itself and events, has taken a minimal interest in the Holocaust. The few interpretations it has put forward are often old – many dating from the period of the Holocaust, with few innovations – and they have little interest for contemporary Jewish scholars, if one looks at the latter’s abundant output. On their side, psychiatry, psychology and even psycho-analysis have, for a long time, taken an interest in the Holocaust and in the internees of concentration camps – the most famous achievement being the identification of the concentration camp survivor syndrome at the end of the 1950s. But neither this famous syndrome, nor practically any other books, manuals, or articles dealing with Holocaust survivors mention the Jewish identity of the patients in a pertinent scientific manner. Why seek to fill these gaps on either side? Why deem it necessary to connect the psychological disciplines with the world of Jewish thought? The author, in charge, at the Centre Georges Devereux at the University of Paris 8, of clinical research psychotherapy tools for Holocaust survivors and descendants of survivors, analyzes the reasons behind these issues and puts forward suggestions.Le monde juif traditionnel contemporain, c’est-à-dire celui qui recourt aux concepts de la Thora pour se penser et penser les événements, ne s’est que fort peu intéressé à la Shoah. Les quelques interprétations proposées sont souvent anciennes – bon nombre datent de l’époque de la Shoah – et ne donnent pas lieu à des innovations ; elles n’intéressent que peu les penseurs de la tradition juive contemporaine au regard de leur foisonnante production. De leur côté, la psychiatrie, la psychologie et même la psychanalyse s’intéressent depuis fort longtemps à la Shoah et aux internés en camp de concentration — le point le plus

  4. Creatina: auxílio ergogênico com potencial antioxidante? Creatine: ergogenic aid with antioxidant potential?

    Directory of Open Access Journals (Sweden)

    Tácito Pessoa de Souza Junior

    2008-06-01

    Full Text Available A creatina é largamente utilizada como auxilio ergogênico, com algumas evidências quanto ao seu efeito positivo na massa magra, força/potência e resistência muscular. Entretanto, esses estudos não conseguiram identificar potenciais mecanismos bioquímicos que pudessem explicar seu efeito na fadiga ou turnover de proteína muscular, existindo a possibilidade de que alguns indivíduos não sejam responsivos a esse suplemento. Outro possível efeito da creatina, que vem sendo recentemente investigado, é a sua ação antioxidante. Mesmo com poucos trabalhos disponíveis, duas possibilidades existem para explicar esse efeito: 1 Ação indireta como tampão energético, devido ao aumento na concentração tecidual de fosfocreatina, que favoreceria a menor produção de metabólitos do ciclo de degradação de purinas (ciclo de Lowenstein, resultando em queda na formação de hipoxantina, xantina e ácido úrico, assim como em espécies reativas de oxigênio (superóxido, peróxido de hidrogênio e radical hidroxil; 2 Por ação direta, apesar de essa propriedade ser inferior à dos antioxidantes já bem conhecidos, como a glutationa reduzida. Mesmo assim, poderia atuar conjuntamente com estes. O objetivo desta comunicação é relatar dados disponíveis sobre esses dois itens.Creatine is largely used as an ergogenic aid with some evidence regarding its positive effect on lean body mass, strength/power and muscle endurance. However, most studies were not capable of identifying biochemical mechanisms that could explain its effect on fatigue or muscle protein turnover. There is also the possibility that some individuals are non-responsive to this supplement. Another possible effect of creatine that has been recently investigated is its antioxidant action, but few studies explored this subject. Nonetheless, it can be emphasized that the antioxidant effect of creatine works in the organism in the following way: 1 Indirect action as an energy buffer

  5. Analyse de la sensibilité aux paramètres gazoles d'un moteur diesel d'automobile à injection directe Small Direct Injection Diesel Engine Sensitivity to the Diesel Fuel Characteristics

    Directory of Open Access Journals (Sweden)

    Montagne X.

    2006-12-01

    Full Text Available L'étude présentée a été réalisée dans le cadre du GMCL (Groupement Moteur Carburant Lubrifiant, organisme qui réunit des constructeurs d'automobiles, des raffineurs et des additiveurs, avec l'objectif d'examiner la sensibilité d'un moteur Diesel à injection directe d'automobile aux paramètres du gazole. Les partenaires de cette étude sont Elf, IFP, Octel, PSA, Renault et Total. Parmi les solutions technologiques permettant de disposer de convertisseurs d'énergie assurant de faibles niveaux d'émissions de polluants et de consommation, le moteur Diesel se place naturellement en bonne position. Dans ce contexte, on enregistre aujourd'hui l'émergence du moteur Diesel à injection directe pour les véhicules légers en raison de ses performances, notamment en regard de la consommation. Toutefois, cette technologie nécessite une technique d'injection performante, associée à la gestion électronique, demande de l'EGR et un catalyseur d'oxydation afin de régler les problèmes d'émissions polluantes et sonores. Il est donc de première importance de cerner avec précision la sensibilité du moteur Diesel à injection directe aux paramètres carburants afin de tirer le meilleur profit de cette technologie. À partir d'un ensemble de gazoles formulés pour faire varier la composition chimique, l'indice de cétane et la densité, un moteur Audi à injection directe de type 1Z a été testé au banc, dans des conditions standard de réglage (avance à l'injection et taux de gaz recyclés. Cet ensemble de résultats a ainsi permis de démontrer que l'accroissement de l'indice de cétane, la réduction de la densité et de la teneur en polyaromatiques ont une influence positive sensible sur les émissions de CO, d'hydrocarbures imbrûlés, des VOF. En ce qui concerne les émissions de particules, l'indice de cétane semble avoir une influence négative sur la fraction sèche dans certaines conditions. De plus, il apparaît que les

  6. The Aux/IAA gene rum1 involved in seminal and lateral root formation controls vascular patterning in maize (Zea mays L.) primary roots.

    Science.gov (United States)

    Zhang, Yanxiang; Paschold, Anja; Marcon, Caroline; Liu, Sanzhen; Tai, Huanhuan; Nestler, Josefine; Yeh, Cheng-Ting; Opitz, Nina; Lanz, Christa; Schnable, Patrick S; Hochholdinger, Frank

    2014-09-01

    The maize (Zea mays L.) Aux/IAA protein RUM1 (ROOTLESS WITH UNDETECTABLE MERISTEMS 1) controls seminal and lateral root initiation. To identify RUM1-dependent gene expression patterns, RNA-Seq of the differentiation zone of primary roots of rum1 mutants and the wild type was performed in four biological replicates. In total, 2 801 high-confidence maize genes displayed differential gene expression with Fc ≥2 and FDR ≤1%. The auxin signalling-related genes rum1, like-auxin1 (lax1), lax2, (nam ataf cuc 1 nac1), the plethora genes plt1 (plethora 1), bbm1 (baby boom 1), and hscf1 (heat shock complementing factor 1) and the auxin response factors arf8 and arf37 were down-regulated in the mutant rum1. All of these genes except nac1 were auxin-inducible. The maize arf8 and arf37 genes are orthologues of Arabidopsis MP/ARF5 (MONOPTEROS/ARF5), which controls the differentiation of vascular cells. Histological analyses of mutant rum1 roots revealed defects in xylem organization and the differentiation of pith cells around the xylem. Moreover, histochemical staining of enlarged pith cells surrounding late metaxylem elements demonstrated that their thickened cell walls displayed excessive lignin deposition. In line with this phenotype, rum1-dependent mis-expression of several lignin biosynthesis genes was observed. In summary, RNA-Seq of RUM1-dependent gene expression in maize primary roots, in combination with histological and histochemical analyses, revealed the specific regulation of auxin signal transduction components by RUM1 and novel functions of RUM1 in vascular development.

  7. Économiste et développement durable : de la professionnalité aux métiers

    Directory of Open Access Journals (Sweden)

    Catherine Figuière

    2010-12-01

    Full Text Available Les emplois intégrant certaines dimensions du développement durable (DD se développent, même si leur affichage n’est pas toujours limpide. Ce texte se propose de distinguer tout d’abord les nouveaux gisements d’emplois des nouvelles préoccupations intégrées à des pratiques existantes ; les postes proposés aux économistes se situant clairement dans cette seconde catégorie. Il vise ensuite, sur la base d’une expérimentation de formation universitaire menée à Grenoble, à mettre en évidence la nécessité d’une formation articulant  « une éducation à propos du développement durable » et la maîtrise d’outils transversaux de l’économie-gestion, tels que la conduite du changement. Cette maîtrise est en effet imposée par la grande variété de l’offre de situations professionnelles.Jobs requiring skills which integrate some dimensions of sustainable development are increasingly numerous, even if their description is not always clear. This paper proposes primarily to identify newly-created jobs from traditional jobs integrating new issues in their description. The jobs offered to economists clearly belong to the second category. Then, based on an experiment carried out at Grenoble University, this paper aims at stressing the need for training including on the one hand, courses “about sustainable development” and on the other, proficiency in using some transversal tools of economics and management, such as organisational change management. This proficiency is indeed imposed by the large variety of the professional positions on offer in this field.

  8. Administration d’anti-inflammatoires non stéroïdiens aux enfants ayant des antécédents de sibilance

    Science.gov (United States)

    Sih, Kendra; Goldman, Ran D.

    2016-01-01

    Résumé Question Un enfant qui fréquente ma clinique s’est récemment fait une entorse à la cheville et il éprouve de la douleur et de la difficulté à supporter son poids sur la jambe affectée. Sa mère lui donne de l’acétaminophène parce qu’on lui a dit de ne jamais utiliser d’anti-inflammatoires non stéroïdiens (AINS) en raison de son asthme contrôlé par pharmacologie. L’asthme chez un enfant est-il une contre-indication à l’administration d’AINS? La maladie respiratoire exacerbée par les AINS existe-t-elle comme entité réelle? Réponse Les AINS sont des médicaments analgésiques et antipyrétiques efficaces. La maladie respiratoire exacerbée par des AINS a été décrite chez des adultes ayant certains facteurs de prédisposition, mais n’a pas été clairement identifiée chez un grand nombre d’enfants. Les AINS peuvent donc être recommandés aux enfants ayant une sibilance connue qui n’ont pas d’antécédents de maladie respiratoire déclenchée par des AINS. PMID:27521406

  9. Le traducteur aux frontières des discours: le "monologue narrativisé" dans les deux traductions slovènes de Madame Bovary

    Directory of Open Access Journals (Sweden)

    Florence Gacoin-Marks

    2013-12-01

    Full Text Available Forme de discours souvent ambiguë et polyphonique dont Flaubert a généralisé lʼemploi dans son écriture romanesque, en particulier dans Madame Bovary, le "monologue narrativisé", plus connu sous le nom de "discours indirect libre", passionne encore aujourdʼhui tant les linguistes que les narratologues et pose aux traducteurs étrangers des difficultés parfois insurmontables. Les différences entre les codes linguistiques français et slovène, notamment lʼabsence en slovène de la concordance des temps dans les propositions complétives, ont pour effet que, dans cette langue, le monologue narrativisé, appelé "discours semidirect", est beaucoup plus nettement détaché des autres formes du discours coexistant dans les textes littéraires. Par ailleurs, contrairement au discours indirect libre français, il se rapporte à une instance énonciative clairement identifiée et est, de ce fait, pratiquement monophonique. En traduisant la prose française, notamment les oeuvres de Flaubert, le traducteur slovène sera donc toujours contraint de prendre parti, de poser des frontières entre les différents types de discours et de transformer le discours indirect libre français polyphonique soit en discours narratif, soit en discours semi-direct slovène monophonique. Dʼautre part, il sera contraint dʼinterpréter les formes verbales ambiguës au sein même du discours indirect libre français, en particulier le conditionnel qui, généralement strictement temporel, peut toutefois également exprimer lʼhypothèse ou lʼaltérité énonciative.

  10. Finance et risque aux Etats-Unis : vers une nouvelle frontière ? Finance and Risk in the USA: A New Frontier?

    Directory of Open Access Journals (Sweden)

    Christine Zumello

    2010-03-01

    Full Text Available Cet article aborde la question de l’évaluation et de l’anticipation du risque sur les marchés financiers aux États-Unis. Les différents types de risque sont analysés ainsi que les principales méthodes utilisées pour les évaluer. La crise des subprimes qui a marqué la fin du second mandat de G.W. Bush a semblé déboucher sur une crise systémique. Parmi les différentes strates de risque, le plus grave est celui qui porte le système financier et économique au naufrage. Les conditions de la remise en cause du système suite à des prises de risque ou une absence de contrôle rigoureux du risque posent la question de l’équilibre entre la sphère politique et la sphère financière.This article raises the question of the evaluation and anticipation of risk on financial markets in the United States. The various types of risk are analysed as well as the main methods used to measure risk. The subprime crisis which dominated the end of the second G.W. Bush presidential term seemed to bring the whole financial and economic system to the brink of collapse. The central notion of the measure and control of risk hinges on the role of the political sphere versus the financial sphere.

  11. Influence du compartiment trophique dans les réponses des populations de poissons aux variations artificielles de débit

    Directory of Open Access Journals (Sweden)

    ORTH D. J.

    1995-04-01

    Full Text Available Les réponses des populations de poissons aux altérations de débit sont assez peu souvent correctement prédites à partir des simulations physiques d'habitat. Actuellement, les évaluations de débit réservé sont basées sur des analyses de l'habitat physique, qui sont supposées avoir une influence sur ces populations. Cela conduit au dilemme en matière de détermination de ces débits : combien d'espèces et de stades faut-il analyser et comment pondérer leur importance respective ? Dans certains cours d'eau, les simulations d'habitat physique issues de PHABSIM (Physical Habitat Simulation pour les poissons les plus courants montrent une surface pondérée utile insensible ou maximum à faible débit. Or, les débits moyens à forts débits sont indubitablement importants pour différentes raisons, telles que le recrutement des espèces inféodées à la plaine alluviale, le nettoyage du fond du lit, les entrées de matière organique et la production des invertébrés benthiques. La densité, la diversité et la production des insectes aquatiques dans différents types de cours d'eau montrent des variations spatiales et interannuelles considérables, souvent directement reliables aux débits. De même, la croissance et le succès de prise de nourriture des poissons varient en fonction de l'abondance des proies. Un modèle de chaîne trophique a été développé pour étudier l'influence de la nourriture de base (insectes aquatiques, proies constituées par les poissons de petite taille et écrevisses sur la production des poissons prédateurs clé (Black bass à petite bouche, Micropterus dolomieu, Rock bass, Ambloplites rupestris, et Poisson chat à tête plate, Pylodictis olivaris dans un grand cours d'eau à régime thermique chaud. L'analyse du modèle indique que la production des poissons est très dépendante de la disponibilité des proies, en particulier les insectes aquatiques et les écrevisses. A partir des analyses du mod

  12. Methodology of hot nucleus calorimetry and thermometry produced by nuclear reactions around Fermi energies; Methodologie de la calorimetrie et de la thermometrie des noyaux chauds formes lors de collisions nucleaires aux energies de Fermi

    Energy Technology Data Exchange (ETDEWEB)

    Vient, E

    2006-12-15

    This work deals with the calorimetry and thermometry of hot nuclei produced in collisions Xe + Sn between 25 and 100 MeV/u. The apparatus for hot nucleus physical characterization is the 4{pi} detector array Indra. This study was made by using the event generators Gemini, Simon and Hipse and a data-processing filter simulating the complete operation of the multi-detector. The first chapter presents the different ways of producing hot nuclei. In the second and third chapters, the author presents a critical methodological study of calorimetry and thermometry applied to hot nuclei, different methods are reviewed, their accuracy and application range are assessed. All the calorimetry methods rely on the assumption that we are able to discriminate decay products of the hot nucleus from evaporated particles. In the fourth chapter, the author gives some ways of improving calorimetry characterization of the hot nucleus. An alternative method of calorimetry is proposed in the fifth chapter, this method is based on the experimental determination of an evaporation probability that is deduced from the physical characteristics of the particles present in a restricted domain of the space of velocities.

  13. Study of heavy ion collisions at Fermi energy: is the methodology orientating our understanding of physics?; Etude des collisions d'ions lourds aux energies de Fermi: les demarches utilisees orientent-elles notre comprehension de la physique?

    Energy Technology Data Exchange (ETDEWEB)

    Bacri, Ch.O

    2001-07-01

    The analysis of the reaction products in the case of a multi-fragmentation reaction requires an efficient sorting of the experimental data. A collision, detected in a 4{pi} detector generates about 100 parameters that are measured. Experimental data have to be reduced to the part most meaningful of the studied event. A model of the reaction is necessary to discard or value variables on which the sorting could be based. The selection of experimental data implies almost always the introduction of a bias that is necessary to know in order to continue a thorough analysis of the experimental results. A theoretical work is then necessary not only in the view of the comparison between results and predictions but also to validate the assumptions that have been made to sort out the experimental data. This method is applied to the study of the nuclear reaction: Gd + U at 36 MeV/U. (A.C.)

  14. Energy Management.

    Science.gov (United States)

    Bete, Tim, Ed.

    1998-01-01

    Presents the opinions of three energy experts on the issue of school facility energy management. The experts respond to the following questions: will energy deregulation occur in all 50 states and will it provide real savings; and will the majority of districts hire ESCOs to manage their energy needs? (GR)

  15. Energy Theater

    Science.gov (United States)

    Daane, Abigail R.; Wells, Lindsay; Scherr, Rachel E.

    2014-01-01

    Energy Theater is a dynamic, full-body activity that engages all students in representing the flow of energy in various phenomena, such as a light bulb burning steadily or a refrigerator cooling food. In Energy Theater, each participant acts as a unit of energy that has one form at a time. Regions on the floor correspond to objects in a physical…

  16. Energy crisis

    Energy Technology Data Exchange (ETDEWEB)

    Subrahmanyam, K.V.; Mudgal, A.G. (comp.)

    1980-01-01

    Energy sources and energy consumption in India are discussed. Human and animal power constitute the principal sources of energy; both are extremely efficient users of the energy in food if they get enough; the food itself takes little energy to grow if energy-intensive agriculture does not take over from traditional methods. Of the commercial sources of energy with which India is endowed, the scarcest are natural gas and petroleum; the most abundant and reasonably well distributed geographically, except for the metallurgical grade, is coal; the one which holds out the greatest promise for the future is nuclear energy. The most important aspect of the energy problem in India is the short supply of coal to steel plants, electric utilities, and such vital industries as cement and textiles. There is a stark confession of the absence of progress on the energy front during the past 18 years. (MCW)

  17. Advantage Energy

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2011-07-01

    Increased focus has been placed on the issues of energy access and energy poverty over the last number of years, most notably indicated by the United Nations (UN) declaring 2012 as the 'International Year of Sustainable Energy for All'. Although attention in these topics has increased, incorrect assumptions and misunderstandings still arise in both the literature and dialogues. Access to energy does not only include electricity, does not only include cook stoves, but must include access to all types of energy that form the overall energy system. This paper chooses to examine this energy system using a typology that breaks it into 3 primary energy subsystems: heat energy, electricity and transportation. Describing the global energy system using these three subsystems provides a way to articulate the differences and similarities for each system's required investments needs by the private and public sectors.

  18. L’expertise médico-légale face aux perversions : instrument ou argument de la justice ? The Medico-Legal Expert on Perversion: Instrument or Argument?

    Directory of Open Access Journals (Sweden)

    Gilles Trimaille

    2011-03-01

    Full Text Available L’expertise médico-légale n’est pas une création du XIXe siècle mais l’application du Code pénal napoléonien de 1810 va profondément modifier la place des experts dans le débat judiciaire. Face à certains comportements étranges, les juges seront amenés à solliciter de plus en plus fréquemment les experts psychiatres afin de déterminer le niveau de responsabilité imputable aux auteurs de crimes ou délits. Dans le domaine spécifique des infractions sexuelles, il reviendra aux psychiatres de déterminer la limite entre la perversité et la perversion, le partage entre la sanction et le soin. Malgré un souci croissant de scientificité présent dans les études médicales consacrées aux perversions sexuelles, les experts psychiatres du XIXe siècle n’arriveront pas toujours à se déprendre des valeurs politiques et morales dominantes de leur temps.Medico-legal expertise was not a creation of the 19th century but application of the Napoleonic Criminal Code of 1810 profoundly changed the role of experts in judicial proceedings. Faced with certain strange behaviors, judges were increasingly led to solicit psychiatric experts so as to determine the level of responsibility attributable to those accused of crimes or misdemeanors. In the specific domain of sexual offenses, it fell to psychiatrists to determine the border between perversity and perversion, and the distinction between sanction and care.  In spite of growing concern with the scientific character of medical studies devoted to sexual perversions, psychiatric experts of the 19th century did not always succeed in separating themselves from the dominant political and moral values of their times.

  19. Contribution to the determination of Sb-Ag-Cu-Ga-Mo-Zn using 14 MeV neutron activation; Contribution au dosage de Sb-Ag-Cu-Ga-Mo-Zn par activation aux neutrons de 14 MeV

    Energy Technology Data Exchange (ETDEWEB)

    Crambes, M. [Commissariat a l' Energie Atomique, Grenoble (France). Centre d' Etudes Nucleaires

    1966-04-01

    By using, 14 MeV, neutron irradiation it is possible to extend the field of application of neutron radio-activation analysis, in particular to the case of light elements. For, many other elements it can replace in-pile irradiation thereby making it possible, thanks to portable 14 MeV neutron generators, to carry out radio-activation analyses away from nuclear-research c e n t r e s. With a view to applying this analytical technique to routine work, we have developed some rapid chemical separation methods in order to make possible the determination of several elements which after exposure to fast neutrons, produce {beta} emitting nuclides which cannot be differentiated by a simple instrumental study, the emitted radiation being of the same type and of similar half-life the two cases. (author) [French] L'irradiation au moyen de neutrons de 14 MeV permet d'etendre le domaine d'application de l'analyse par radioactivation neutronique, en particulier aux elements legers. Cependant pour de nombreux autres elements elle peut remplacer l'irradiation en reacteur nucleaire permettant ainsi grace aux ensembles portables producteurs de neutrons de 14 MeV, l'extension de l'analyse par radioactivation a l'exterieur des centres d'etudes nucleaires. Dans le but d'appliquer cette methode d'analyse a des travaux de routine, nous avons mis au point des separations chimiques rapides, afin de permettre le dosage de quelques elements qui par irradiation aux neutrons rapides, engendrent des nucleides emetteurs {beta} qu'une simple etude instrumentale ne peut differencier en raison de l'identite de leur rayonnement et de leurs periodes radioactives trop proches. (auteur)

  20. Support to Industry Partners in Achieving Designation/Certification for the US Safety Act (Soutien aux Partenaires de L’industrie afin de les Aider a Obtenir la Designation/Certification Associee a la Loi Americaine sur la Securite)

    Science.gov (United States)

    2011-10-01

    américain en 2001, le gouvernement américain a pris conscience qu’il devait améliorer sa stratégie visant à prévenir ou à neutraliser les futures...époque, le gouvernement américain s’est aperçu qu’il était nécessaire de faire appel aux nouvelles technologies pour atteindre les objectifs de sa...l’industrie et les investissements en développement technologique, le gouvernement américain a également passé la loi sur le soutien à

  1. Interagency Training for Comprehensive Operations: Government Partners Perceptions of Exercise Maple Guardian (La Formation Interorganismes aux fins d’Operations Globales: Perceptions des Partenaires Gouvernementaux de l’Exercise Maple Guardian)

    Science.gov (United States)

    2010-06-01

    afghans durant l’exercice et quant à la valeur perçue de la formation pour se préparer à collaborer avec les membres de la population afghane durant le...contemporaines a poussé le gouvernement du Canada à adopter progressivement une approche globale face aux opérations, fondée en partie sur une intervention...supporting the creation and sustainment of good governance, are also critical to addressing the scope and depth of the needs of the people of such states

  2. Evaluation des indicateurs d’alerte précoce de la résistance du VIH aux ARV en Côte d’Ivoire en 2011

    Science.gov (United States)

    Yao, Kouadio Jean; Damey, Néto Florence; Konan, Diby Jean Paul; Aka, Joseph; Aka-Konan, Sandrine; Ani, Alex; Bonle, Marguerite Te; Kouassi, Dinard

    2016-01-01

    Introduction En 2001, l'Organisation des Nations Unies recommandait de rendre disponible les médicaments antirétroviraux dans les pays à ressources limitées. Cependant, l'utilisation de ces médicaments à grande échelle s'accompagne du développement de résistance du virus. En Côte d'Ivoire, plusieurs sites prescrivent les antirétroviraux. Cette étude avait pour objectif d'évaluer les facteurs programmatiques associés à un risque élevé d'émergence de résistance du VIH aux antirétroviraux. Méthodes Il s'agit d'une cohorte rétrospective sur 20 sites de prise en charge des personnes vivant avec le VIH. La population d'étude était constituée des personnes ayant initié leur traitement antirétroviral sur les sites en 2008-2009. L'estimation de la taille de l'échantillon a été faite à partir de la stratégie d'échantillonnage de l'OMS. Résultats Sur 20 sites, 98% des prescriptions initiales étaient conformes aux directives nationales et 20% des sites avaient 100% de prescriptions conformes. Au total, 33% des patients étaient perdus de vue au cours des 12 premiers mois de traitement antirétroviral et 20% des sites avaient moins de 20% de perdus de vue. A 12 mois, 51% des patients demeuraient sous traitement de première intention approprié et 11% des sites ont atteint le seuil d'au moins 70% de patients sous traitement de première intention approprié. Un seul site n'a pas connu de rupture d'antirétroviraux sur les 12 mois. Conclusion Des insuffisances relevées dans la prise en charge des personnes vivant avec le VIH traduisent l'existence d'un risque important de résistance du virus aux antirétroviraux en 2008-2009. Pour minimiser ce risque les pratiques de prescription devraient être améliorées, un système de recherche des absents aux rendez-vous devrait être mis en place et la disponibilité constante des antirétroviraux devraient être assurée. PMID:28250876

  3. Des controverses aux compromis. Les lignes de front du métro bruxellois From controversies to compromises. The frontlines of Brussels metro

    Directory of Open Access Journals (Sweden)

    Céline Tellier

    2012-12-01

    Full Text Available En 1963, le Ministère belge des Communications publie un document intitulé “Promotion des Transports en commun dans les grandes agglomérations”, véritable plaidoyer en faveur du transport public à l’échelle de cinq grandes villes belges. Dans cet article, nous proposons d’analyser de manière approfondie ce document pour comprendre la controverse fondatrice qui a justifié les travaux du futur métro à Bruxelles. En faisant parler les archives institutionnelles, nous soutenons que le métro bruxellois peut être considéré comme le résultat d’un compromis entre les deux institutions à l’époque en charge de la mobilité à Bruxelles : le Ministère des Travaux Publics et le Ministère des Communications. Préférant répondre aux normes de capacité et de rapidité déjà présentes dans le monde routier, le transport public a ainsi fait le deuil de la surface et, par là, a purifié le débat des mobilités urbaines en une solution apparemment strictement technique, espace pacifié où protagonistes d’un champ désormais commun peuvent s’entendre et s’allier.In 1963 the Belgian Ministry of Communications published a document entitled “Promotion des Transports en commun dans les grandes agglomérations”, real plea for the defence of public transport on the scale of five Belgian cities. In this article, we propose to analyze this document deeply, to help the understanding of the founding controversy which justified the works of future metro in Brussels. By studying institutional archives, we maintain that the Brussels metro may be considered as the result of a compromise between the two institutions dealing with mobility at that time in Brussels: the Ministry of Civil Engineering and the Ministry of Communications. Through responding to capacity and speed standards already present in the field of road transport, public transport gave up the surface and turned the debate on urban mobility into an apparently

  4. Parler l’« interlangue » de mon siècle : la poesia visiva face aux mass media

    Directory of Open Access Journals (Sweden)

    Gaëlle Theval

    2006-06-01

    Full Text Available La poesia visiva se donne pour but de résister à la massification aliénante véhiculée par les médias, en développant une poésie visuelle qui se réapproprie le langage même des médias incriminés. L’adoption de cette « interlangue », qui repose sur l’association du mot et de l’image, a une fonction double : il s’agit à la fois de redonner une place à la poésie dans la société contemporaine dominée par l’image en empruntant aux médias leur efficacité pragmatique, et, dans le même temps, de contester ce pragmatisme en usant du montage et du détournement, à des fins critiques. C’est la stratégie « cheval de Troie ».The aim of poesia visiva is to resist the alienating massification conveyed by the media, by developing a visual poetry which re-appropriates the language of the media in question. Adopting this “interlanguage”, which is based on the association of word and image, has a double function: it both restores a place for poetry in our contemporary society, which is dominated by images, by borrowing from the media their pragmatic efficiency, and, at the same time it questions this pragmatism by using photomontage and diversion in a critical way. This can be called a strategy of “the Trojan horse”.La poesia visiva tiene por objetivo resistir a la masificación enajenante vehiculada por los medios de comunicación, al desarrollar una poesía visual que se reapropia el lenguaje mismo de los medias en cuestión. La adopción de esta “intrelengua”, que tiene lugar por la asociación de la palabra y la imagen, tiene una doble función : por una parte, situar de nuevo la poesía en la sociedad contemporánea dominada por la imagen, al tomar la eficiencia pragmática de los medios, por otra, dudar de tal pragmatismo valiéndose del montaje y de la deformación con fines críticos. En otras palabras, la estrategia del “Caballo de Troya”.

  5. L’enfant pauvre et la naissance de la photographie sociale aux États-Unis au XIXe siècle

    Directory of Open Access Journals (Sweden)

    Anne LESME

    2010-03-01

    Full Text Available À la fin du XIXe siècle, le journaliste et photographe Jacob Riis révèle les conditions de vie déplorables des familles d’immigrants à New York. C’est le début de la photographie sociale aux États-Unis où la représentation de l’enfant pauvre tiendra une place majeure. Ses photographies, projetées au cours de conférences faites par l’auteur et reproduites dans des publications, contribueront à un changement de mentalité. Si le regard de ce photographe reste celui d’un membre de la classe moyenne sur les enfants du Lower East Side, ses images apportent une nouvelle vision de la pauvreté, en phase avec un enfant désormais perçu comme innocent par la société. Par ailleurs, cet usage particulier du rôle probant de la photographie en soutien du texte inaugure un nouveau mode de communication dont les réformateurs useront afin d’émouvoir et de faire réagir le public des classes moyennes et aisées.At the end of the 19th century, Jacob Riis, journalist and photographer, brought to light the appalling conditions of the slums in New York; it was the beginning of the social documentary photography in the United States. The representation of destitute children was to become central in this genre. His photographs, used during stereopticon slides projections and published in books and articles, contributed to a change of mentality. However influenced by a middle-class vision of the Lower East Side’s children, Jacob Riis’s photographs contributed to bring a new perception of poverty in line with a child who was from that time perceived as innocent by a large part of society. This particular use of photography as a convincing and reliable medium added to the text initiated a new means of communication used by the reformers to move and provoke reactions from a middle and upper-class public.

  6. Energy audit and energy security

    Directory of Open Access Journals (Sweden)

    Beata Agnieszka Kulessa

    2013-07-01

    Full Text Available In article, we present the issue of energy security. This article to answer the questions concerning the future of energy in Poland. These activities are directly related to energy security and the reduction of CO2 emissions. One element of this plan is the introduction in the EU energy certification of buildings. The energy certificates in Poland launched on 01.01.2009 and implements the objectives adopted by the European Union and contribute to energy security, increasing energy efficiency in construction and environmental protection.

  7. POLYACETYLENE : LA CHASSE AUX SOLITONS

    OpenAIRE

    Roth, S.; Ehinger, K.; Menke, K.; Peo, M.; Schweizer, R

    1983-01-01

    Des expériences électriques, magnétiques et optiques dans le polyacétylène sont recensées et des résultats nouveaux sont présentés concernant l'isomérisation cis-trans par dopage AsF5 (étude Raman) ; la coexistence des spins localisés et itinérants (expérience RPE) même dans des échantillons dopés doucement ; et la variation en temps (échelle des nanosecondes) de l'effet photoélectrique. Des arguments expérimentaux prosoliton sont critiqués et l'avis est exprimé qu'il manque des évidences dir...

  8. Graph Energy

    CERN Document Server

    Li, Xueliang; Gutman, Ivan

    2012-01-01

    This book is about graph energy. The authors have included many of the important results on graph energy, such as the complete solution to the conjecture on maximal energy of unicyclic graphs, the Wagner-Heuberger's result on the energy of trees, the energy of random graphs or the approach to energy using singular values. It contains an extensive coverage of recent results and a gradual development of topics and the inclusion of complete proofs from most of the important recent results in the area. The latter fact makes it a valuable reference for researchers looking to get into the field of g

  9. Geothermal Energy

    Energy Technology Data Exchange (ETDEWEB)

    Steele, B.C.; Harman, G.; Pitsenbarger, J. [eds.

    1996-02-01

    Geothermal Energy Technology (GET) announces on a bimonthly basis the current worldwide information available on the technologies required for economic recovery of geothermal energy and its use as direct heat or for electric power production.

  10. Alternative Energies

    Energy Technology Data Exchange (ETDEWEB)

    Planting, A.; De saint Jacob, Y.; Verwijs, H.; Belin, H.; Preesman, L.

    2009-03-15

    In two articles, one interview and one column attention is paid to alternative energies. The article 'A new light on saving energy' discusses the option to save energy by modernising lighting systems in urban areas. The column 'View from Paris' focuses on investment decisions in France with regard to renewable energy and energy savings. The article 'Europe turns a blind eye to big battery' discusses developments in batteries to store energy. The interview concerns fuel cell expert and formerly President of UTC Power Jan van Dokkum. The last article gives a brief overview of the European Energy Research Alliance (EERA) and the challenges this alliance will have to face with regard to climate change and energy security.

  11. Energy economics

    Energy Technology Data Exchange (ETDEWEB)

    Develi, Abdulkadir; Kaynak, Selahattin (eds.)

    2012-07-01

    Energy resources, the basic input in every area of the economy, have a fundamental function for society's welfare. Traditional energy resources are, however, rapidly decreasing. Energy supply has been falling behind in meeting global demand, and is causing increased focus on efficiency and economy concepts in recent energy policies. Since the existing energy resources are not spread evenly among the countries, but instead are concentrated in certain regions and countries, a monopolistic situation arises. Equally, supply assurance is an issue, since the energy supply is held by certain regions and countries who have monopolistic pricing power. Both the EU and many other countries are studying how to marketize energy. This book focuses on the importance of energy and the problems posed by it. It will be useful for the academic community, related sectors and decision makers.

  12. Energy storage

    CERN Document Server

    Brunet, Yves

    2013-01-01

    Energy storage examines different applications such as electric power generation, transmission and distribution systems, pulsed systems, transportation, buildings and mobile applications. For each of these applications, proper energy storage technologies are foreseen, with their advantages, disadvantages and limits. As electricity cannot be stored cheaply in large quantities, energy has to be stored in another form (chemical, thermal, electromagnetic, mechanical) and then converted back into electric power and/or energy using conversion systems. Most of the storage technologies are examined: b

  13. Atomic energy

    CERN Multimedia

    1996-01-01

    Interviews following the 1991 co-operation Agreement between the Department of Atomic Energy (DAE) of the Government of India and the European Organization for Nuclear Research (CERN) concerning the participation in the Large Hadron Collider Project (LHC) . With Chidambaram, R, Chairman, Atomic Energy Commission and Secretary, Department of Atomic Energy, Department of Atomic Energy (DAE) of the Government of India and Professor Llewellyn-Smith, Christopher H, Director-General, CERN.

  14. Principe d'alimentation par convertisseurs multiniveaux à stockage intégré - Application aux accélérateurs de particules

    CERN Document Server

    Fahrni, Claude

    Facilities operating in cycles, such as particles accelerators, require pulsed power. Directly drawing this pulsed power from the industrial network is generally not acceptable. A system with a local energy storage system lessens the impact on the network. In this work, a power supply is proposed that allows pulsed operation of a proton synchrotron without disturbing the industrial network with large variations of active power. The context of this study is the search of a completely static replace ment of an existing inertial energy storage device. The application is the proton synchrotron of the CERN. Several solutions to store the energy needed by the proton synchrotron are studied, they include inertial energy storage, capacitive energy storage and magnetic energy storage. On this basis, the solution based on capacitive energy storage with interleaved multilevel converters is retained. The sizing of the storage elements and the filter is carried out. The control strategies are studied and designed. They ar...

  15. Geothermal Energy

    Energy Technology Data Exchange (ETDEWEB)

    Steele, B.C.; Pichiarella, L.S. [eds.; Kane, L.S.; Henline, D.M.

    1995-01-01

    Geothermal Energy (GET) announces on a bimonthly basis the current worldwide information available on the technologies required for economic recovery of geothermal energy and its use as direct heat or for electric power production. This publication contains the abstracts of DOE reports, journal articles, conference papers, patents, theses, and monographs added to the Energy Science and Technology Database during the past two months.

  16. Energy requirements

    NARCIS (Netherlands)

    Hulzebos, Christian V.; Sauer, Pieter J. J.

    2007-01-01

    The determination of the appropriate energy and nutritional requirements of a newborn infant requires a clear goal of the energy and other compounds to be administered, valid methods to measure energy balance and body composition, and knowledge of the neonatal metabolic capacities. Providing an appr

  17. Energy Storage.

    Science.gov (United States)

    Eaton, William W.

    Described are technological considerations affecting storage of energy, particularly electrical energy. The background and present status of energy storage by batteries, water storage, compressed air storage, flywheels, magnetic storage, hydrogen storage, and thermal storage are discussed followed by a review of development trends. Included are…

  18. Wind Energy

    Energy Technology Data Exchange (ETDEWEB)

    Beurskens, H.J.M. [SET Analysis, Kievitlaan 26, 1742 AD Schagen (Netherlands); Brand, A.J. [Energy research Centre of the Netherlands ECN, Unit Wind Energy, P.O. Box 1, 1755 ZG Petten (Netherlands)

    2013-02-15

    Over the years, wind energy has become a major source of renewable energy worldwide. The present chapter addresses the wind resource, which is available for exploitation for large-scale electricity production, and its specific physical properties. Furthermore, the technical options available to convert the energy of the air flow into mechanical energy and electricity are described. Specific problems of large-scale integration of wind energy into the grid as well as the present and future market developments are described in this chapter. Finally, environmental aspects are discussed briefly.

  19. Energy Security Means Energy Interdependence

    Science.gov (United States)

    2009-09-24

    robertbryce.com. i BP Statistical Review of World Energy 2009. ii Donald Losman, “Oil Denial: An...aer/txt/ptb0103.html xix BP Statistical Review of World Energy 2009. xx BP Statistical Review of World Energy 2009. xxi Author interview with...Betrand Barré, Areva headquarters, Paris, May 7, 2009. xxii BP Statistical Review of World Energy 2009. xxiii For a comparison of various fuels in

  20. Attitudes des éleveurs et sensibilité des systèmes d'élevage face aux sécheresses dans les Alpes françaises

    Directory of Open Access Journals (Sweden)

    Laurent Dobremez

    2011-01-01

    Full Text Available Les systèmes d'élevage des Alpes françaises sont fortement exposés au changement climatique annoncé et la plupart subissent déjà des épisodes de sécheresse depuis le début des années 2000. Face à ces aléas, les éleveurs ont mis en œuvre un certain nombre de leviers et envisagent d'en activer d'autres à l'avenir. Des enquêtes en exploitation ont permis d’identifier ces leviers. Leur analyse permet de caractériser les attitudes des éleveurs face aux sécheresses et d’évaluer l’évolution de la sensibilité de leurs systèmes d’élevage. A l'exception des exploitations disposant de surfaces irriguées importantes, toutes les exploitations cherchent d'abord à contourner l’aléa. Elles ont recours aux achats de fourrage pour compenser la baisse des récoltes destinées aux stocks hivernaux, mais à des degrés divers selon la durée de l’hivernage. Pour les périodes de pâturage, les éleveurs de haute montagne et les systèmes laitiers des Alpes du nord jouent avant tout sur un système résistant grâce à l’agrandissement et au surdimensionnement des pâtures par rapport aux besoins du troupeau. Les exploitations pastorales des Alpes du sud misent aussi sur une diversité de surfaces et une certaine latitude dans la conduite technique pour s'adapter aux conditions de l'année. Une succession répétée d’années sèches pourrait se traduire par des ruptures plus radicales dans les systèmes d’élevage. Il faut aussi garder à l’esprit que le changement climatique n'est qu'un des facteurs influençant les modes de transformation des exploitations.Livestock farming systems in the French Alps are particularly exposed to the predicted climate change and most of them have already experienced periods of drought since the beginning of the 2000s. Faced with this risk, livestock farmers have put in place a certain number of measures and envisage introducing others in the future. For the present study, surveys were

  1. Des millets aux nations From millets to nations: the construction of national identities in the novel You too, are you Greek? by Vassilios Christopoulos

    Directory of Open Access Journals (Sweden)

    Nicolas Pitsos

    2012-05-01

    Full Text Available L’auteur de ce roman construit son intrigue sur l’histoire de plusieurs familles d’une part au moment de l’effondrement d’un monde, celui des millets de l’Empire ottoman fondé sur le principe de l’identification des individus en fonction de leurs croyances religieuses et, d’autre part, lors de la mise en place d’une nouvelle organisation politique, celle des États-nations obsédés par l’idée de la définition de l’individu sur la base de critères nationaux. L'exemple narratif dominant est celui du passage du millet des Roums à la nation des Grecs. Il s’agit d’un roman polyphonique quant à l’expression d’expériences traumatisantes issues de politiques de nettoyage ethnique et culturel, menées par les différentes parties impliquées dans les événements qui agitent l’Empire ottoman à la fin du XIXe et au début du XXe siècle. Dans ce sens, l’écriture de ce roman s’oppose aux lectures exclusivistes de l’événement historique, largement diffusées par les mythologies nationales balkaniques visant à exalter les souffrances de nos compatriotes et de nos coreligionnaires, tout en effaçant ou occultant les destins tragiques des Autres.The author of this novel puts in plot the history of various families, at the moment of the fall from one hand, of an entire world, this of ottoman empire’s millets, based on the principle of individual identification following their religious beliefs and during the establishment on the other hand, of a new political organization, this of State-Nations, obsessed by the idea of individual definition on the basis of national criteria. The predominant narrative paradigm is this of the Roum millet transition towards the Greeks' nation. It is about a polyphonic novel, regarding to the expression of traumatic experiences issued by the ethnic and cultural cleansing policies, conducted by the different actors implicated in the events which stirred up trouble in the ottoman

  2. Application of Continuous Thermodynamics to Natural-Gas Mixtures Application de la thermodynamique continue aux mélanges de gaz naturel

    Directory of Open Access Journals (Sweden)

    Prausnitz J. M.

    2006-11-01

    Full Text Available This work reviews recent progress in the application of continuous thermodynamics towards calculation of phase equilibria in natural-gas mixtures. In such mixtures, there may be too many components to identify each component individually. Continuous thermodynamics provides a theoretical framework for representing the composition of a portion of the natural-gas mixture by a continuous distribution function. Advances in continuous thermodynamics are discussed in three areas :(1 Characterization and representation of composition in a many-component mixture(2 Development and application of molecular-thermodynamic models for continuous mixtures, and(3 Implementation of efficient numerical techniques for solving material-balance and phase-equilibrium equations. While continuous thermodynamics provides a useful tool for calculation of phase equilibria in natural-gas mixtures, successful implementation requires better chemical-analytical characterization methods. Further, improved semi-theoretical techniques must be developed to relate experimental characterization information to physically significant parameters in molecular-thermodynamic models. Ce travail examine les récents développements de l'application de la thermodynamique continue au calcul des équilibres de phases de mélanges de gaz naturel. Dans ces mélanges, les composants sont souvent en trop grand nombre pour qu'on puisse les identifier individuellement. La thermodynamique continue fournit un schéma théorique permettant de représenter la composition d'une partie de mélange de gaz naturel par une fonction de distribution continue. Les progrès de la thermodynamique continue sont examinés dans les trois domaines suivants : 1 caractérisation et représentation de la composition d'un mélange de plusieurs produits; 2 mise au point et application des modèles de thermodynamique moléculaire aux mélanges continus; 3 mise en oeuvre de techniques numériques efficaces pour r

  3. Voyage aux Enfers ou rêve de jeune-fille ?Les révélations curieuses de la Fille dans le Gascon extravagant

    Directory of Open Access Journals (Sweden)

    Sophie Houdard

    2007-10-01

    Full Text Available 1637, la possession des ursulines de Loudun entre dans sa phase de publicité spectaculaire. Les jésuites exorcistes mettent tout en œuvre pour lutter contre les incrédulités. Jeanne des anges, la supérieure du couvent, délivrée du diable Béhémot censé avoir gravé des noms sur sa main devient un « miracle » ambulant. La même année, l’auteur anonyme du Gascon extravagant choisit de publier son « Histoire comique » : une Fille, prétendument possédée et un Ermite-exorciste deviennent, pour la première fois, les personnages centraux d’une fiction comique. Cette « invention » romanesque ne doit pas être prise à la légère : en « empruntant » à la possession ce couple, le Gascon extravagant « négocie » un espace critique avec la possession : la représentation dénonce, en l’installant dans l’espace fictionnel, la redoutable efficacité de la fable possessionniste. On verra comment la Fille et le récit de son Voyage aux enfers participent de cette représentation critique, en inventant une narration d’une rare ambiguïté.« A trip into Hell or a teen girl’s dream ? Young woman’s curious revelations in The Gascon extravagant »1637. The demonic possession of the Ursulines of Loudun enters its sensationalist stage. The Jesuit exorcists put their best efforts into fighting disbelief. Jeanne des Anges, the Mother Superior of the convent, who has been freed from Béhémot, a devil supposed to have engraved names on her hand, becomes a walking “miracle”. During the same year the anonymous author of Gascon extravagant decides to publish his « Histoire comique »: a supposedly possessed « Young woman » and an exorcist-« Hermit » become, for the first time, the main characters in a comic fiction. This romanesque « invention » ought not to be taken lightly: in « borrowing » this couple from the realm of demonic possession, The Gascon extravagant « negotiates » a critical

  4. Solar energy

    Energy Technology Data Exchange (ETDEWEB)

    Sommer-Larsen, P.; Krebs, F.C. (Risoe DTU, Roskilde (Denmark)); Plaza, D.M. (Plataforma Solar de Almeria-CIEMAT (Spain))

    2010-11-15

    Solar energy is the most abundant energy resource on earth. In a sustainable future with an ever-increasing demand for energy, we will need to use this resource better. Solar energy technologies either convert sunlight directly into heat and electrical energy or use it to power chemical conversions which create 'solar fuels' or synthetic compounds. Solar heating technologies have developed steadily for many years and solar heating and cooling is one of the world's commonest renewable energy technologies. This chapter, however, focuses on technologies for electricity production and touches more briefly on the prospects for solar fuels. The section on Danish perspectives also discusses solar thermal heating in district heating plants. In recent decades, two technologies for converting solar energy into electrical energy have dominated: photovoltaics (PV) and concentrating solar power (CSP). Today's silicon and thin-film PV technologies are advancing steadily, with new materials and technologies constantly being developed, and there are clear roadmaps for lowering production costs. In the discussion below we assess the maturation potential of currently emerging PV technologies within the next 40 years. Concentrating solar power is already a proven technology, and below we evaluate its potential to become a substantial part of the energy mix by 2050. Solar fuels cover a range of technologies. The chapter is to a great extent based on two recent roadmaps from the International Energy Agency (IEA). Many reports, predictions, scenarios and roadmaps for solar energy deployment exist. The IEA predictions for the penetration of solar energy in the future energy system are low relative to many of the other studies. The IEA roadmaps, however, cover most aspects of the future deployment of the technologies and reference older work. (Author)

  5. Wind energy.

    Science.gov (United States)

    Leithead, W E

    2007-04-15

    From its rebirth in the early 1980s, the rate of development of wind energy has been dramatic. Today, other than hydropower, it is the most important of the renewable sources of power. The UK Government and the EU Commission have adopted targets for renewable energy generation of 10 and 12% of consumption, respectively. Much of this, by necessity, must be met by wind energy. The US Department of Energy has set a goal of 6% of electricity supply from wind energy by 2020. For this potential to be fully realized, several aspects, related to public acceptance, and technical issues, related to the expected increase in penetration on the electricity network and the current drive towards larger wind turbines, need to be resolved. Nevertheless, these challenges will be met and wind energy will, very likely, become increasingly important over the next two decades. An overview of the technology is presented.

  6. Transporation Energy

    Energy Technology Data Exchange (ETDEWEB)

    Clifford Mirman; Promod Vohra

    2012-06-30

    This Transportation Energy Project is comprised of four unique tasks which work within the railroad industry to provide solutions in various areas of energy conservation. These tasks addressed: energy reducing yard related decision issues; alternate fuels; energy education, and energy storage for railroad applications. The NIU Engineering and Technology research team examined these areas and provided current solutions which can be used to both provide important reduction in energy usage and system efficiency in the given industry. This project also sought a mode in which rural and long-distance education could be provided. The information developed in each of the project tasks can be applied to all of the rail companies to assist in developing efficiencies.

  7. Energy Security

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    With an increasing number of countries becoming industrialized, energy, the so-called blood of modern economies, is becoming increasingly important Energy security has become an important factor that directly influences world economic stability and international relations. In an article posted on People's Daily Online, Liu Jianfei, professor at the International Strategic Research Center of the Party School of the Central Committee of the Communist Party of China, shares his opinions on energy security.

  8. Energy Savers

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    The government has mandated a reduction in energy use this year, but many wonder whether and how that goal can be achieved Pressure is mounting for China to reduce its energy consumption, but many say the government's target of cutting energy use per unit of gross domestic product (GDP) by 4 percent this year will be a major hurdle. Nearly half of the provinces and

  9. Wind Energy

    Energy Technology Data Exchange (ETDEWEB)

    Ganley, Jason; Zhang, Jie; Hodge, Bri-Mathias

    2016-03-15

    Wind energy is a variable and uncertain renewable resource that has long been used to produce mechanical work, and has developed into a large producer of global electricity needs. As renewable sources of energy and feedstocks become more important globally to produce sustainable products, many different processes have started adopting wind power as an energy source. Many times this is through a conversion to hydrogen through electrolysis that allows for a more continuous process input. Other important pathways include methanol and ammonia. As the demand for sustainable products and production pathways increases, and wind power capital costs decrease, the role of wind power in chemical and energy production seems poised to increase significantly.

  10. Solar energy

    Science.gov (United States)

    Rapp, D.

    1981-01-01

    The book opens with a review of the patterns of energy use and resources in the United States, and an exploration of the potential of solar energy to supply some of this energy in the future. This is followed by background material on solar geometry, solar intensities, flat plate collectors, and economics. Detailed attention is then given to a variety of solar units and systems, including domestic hot water systems, space heating systems, solar-assisted heat pumps, intermediate temperature collectors, space heating/cooling systems, concentrating collectors for high temperatures, storage systems, and solar total energy systems. Finally, rights to solar access are discussed.

  11. Energy: nuclear energy; Energies: l'energie nucleaire

    Energy Technology Data Exchange (ETDEWEB)

    Lung, M. [Societe Generale pour les Techniques Nouvelles (SGN), 78 - Saint-Quentin-en-Yvelines (France)

    2000-11-01

    Convinced that the nuclear energy will be the cleaner, safer, more economical and more respectful of the environment energy of the future, the author preconizes to study the way it can be implemented, to continue to improve its production, to understand its virtues and to better inform the public. He develops this opinion in the presentation of the principal characteristics of the nuclear energy: technology, radioactive wastes, radiation protection, the plutonium, the nuclear accidents, the proliferation risks, the economics and nuclear energy and competitiveness, development and sustainability. (A.L.B.)

  12. Nuclear energy.

    Science.gov (United States)

    Grandin, Karl; Jagers, Peter; Kullander, Sven

    2010-01-01

    Nuclear energy can play a role in carbon free production of electrical energy, thus making it interesting for tomorrow's energy mix. However, several issues have to be addressed. In fission technology, the design of so-called fourth generation reactors show great promise, in particular in addressing materials efficiency and safety issues. If successfully developed, such reactors may have an important and sustainable part in future energy production. Working fusion reactors may be even more materials efficient and environmental friendly, but also need more development and research. The roadmap for development of fourth generation fission and fusion reactors, therefore, asks for attention and research in these fields must be strengthened.

  13. Applied energy an introduction

    CERN Document Server

    Abdullah, Mohammad Omar

    2012-01-01

    Introduction to Applied EnergyGeneral IntroductionEnergy and Power BasicsEnergy EquationEnergy Generation SystemsEnergy Storage and MethodsEnergy Efficiencies and LossesEnergy industry and Energy Applications in Small -Medium Enterprises (SME) industriesEnergy IndustryEnergy-Intensive industryEnergy Applications in SME Energy industriesEnergy Sources and SupplyEnergy SourcesEnergy Supply and Energy DemandEnergy Flow Visualization and Sankey DiagramEnergy Management and AnalysisEnergy AuditsEnergy Use and Fuel Consumption StudyEnergy Life-Cycle AnalysisEnergy and EnvironmentEnergy Pollutants, S

  14. Energy harvester

    NARCIS (Netherlands)

    Herder, J.L.; Tolou, N.

    2013-01-01

    Energy harvester comprising a mass (2) that is subjectable to environmental forces for bringing it into the status of a moving mass, and means (5) linked to the mass (2) for converting and storing of energy embodied in the moving mass, which means (5) are arranged for subsequent release of said ener

  15. Geothermal Energy.

    Science.gov (United States)

    Bufe, Charles Glenn

    1983-01-01

    Major activities, programs, and conferences in geothermal energy during 1982 are highlighted. These include first comprehensive national assessment of U.S. low-temperature geothermal resources (conducted by U.S. Geological Survey and Department of Energy), map production by U.S. Geological Survey, geothermal plant production, and others. (JN)

  16. Energy Monitoring

    DEFF Research Database (Denmark)

    Hansen, Claus T.; Madsen, Dines; Christiensen, Thomas

    Energy measurement has become an important aspect of our daily lives since we have learned that energy consumption, is one of the main source of global warming. Measuring instruments varies from a simple watt-meter to more sophisticated microprocessor control devices. The negative effects...... that fossil fuels induce on our environment has forced us to research renewable energy such as sunlight, wind etc. This new environmental awareness has also helped us to realize the importance of monitoring and controlling our energy use. The main purpose in this research is to introduce a more sophisticated...... but affordable way to monitor energy consumption of individuals or groups of home appliances. By knowing their consumption the utilization can be regulated for more efficient use. A prototype system has been constructed to demonstrate our idea....

  17. Thermodynamic Aspects of Supercritical Fluids Processing: Applications of Polymers and Wastes Treatment Aspects thermodynamiques des procédés mettant en oeuvre des fluides supercritiques : applications aux traitements des polymères et des déchets

    Directory of Open Access Journals (Sweden)

    Beslin P.

    2006-11-01

    Full Text Available Supercritical fluid processes are of increasing interest for many fields : in supercritical fluid separation (petroleum-chemistry separation and purification, food industry and supercritical fluid chromatography (analytical and preparative separation, determination of physicochemical properties; as reaction media with continuously adjustable properties from gas to liquid (low-density polyethylene, waste destruction, polymer recycling; in geology and mineralogy (volcanoes, geothermal energy, hydrothermal synthesis; in particle, fibber and substrate formations (pharmaceuticals, explosives, coatings; in drying materials (gels. This paper presents the unusual physicochemical properties of supercritical fluids in relation to their engineering applications. After a short report of fundamental concepts of critical behavior in pure fluids, we develop in more details the tunable physicochemical properties of fluid in the supercritical domain. The second part of this paper describes the engineering applications of supercritical fluids relevant of chemical reactions and polymer processing. Each application presentation is divided in two parts : the first one recalls the basic concepts including general background, physicochemical properties and the second one develops the engineering applications relevant of the advocated domain. La mise en Suvre des fluides supercritiques est d'un intérêt croissant dans de nombreux domaines : pour la séparation (séparation et purification en pétrochimie, industrie alimentaire et la chromatographie par fluides supercritiques (séparation analytique et préparatoire, détermination des propriétés physicochimiques, comme milieux réactifs aux propriétés continûment ajustables allant du gaz au liquide (polyéthylène de faible densité, élimination des déchets, recyclage des polymères, en géologie et en minéralogie (volcanologie, énergie géothermique, synthèse hydrothermique, dans la formation des particules

  18. Proposal of law relative to the electricity and natural gas regulated prices; Proposition de loi relative aux tarifs reglementes d'electricite et de gaz naturel

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2008-01-15

    This proposal of law relative to regulated electricity and gas tariffs, concerns one important modification of the article 66 from the law no 2005-781 of July 13, 2005 about the main guidelines of the French energy policy. This modification allows the households who have made the choice of a de-regulated energy supplier to change back and benefit again of the regulated tariffs. This document presents the items added in this way to the article 66. (J.S.)

  19. The today situation and the nuclear sector perspectives in Usa; La situation actuelle et les perspectives du secteur nucleaire aux Etats-Unis

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2006-07-01

    In this analysis the author details and discusses the nuclear energy situation in the Usa: the park and the electric power production, the nuclear safety and the radiation protection, the licenses prolongation, the power increase, the regulation relative to the construction of new reactors, the combined construction permit and operating license, the uncertainties on the Yucca Mountain storage site and the Global Nuclear Energy Partnership initiative, the 2006 perspectives and the IV generation reactors. (A.L.B.)

  20. Energies prices; Prix des energies

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2006-01-15

    This document offers a synthesis of the main tariffs and prices of the energy for January 2006 and for 2004 and 2005. It concerns the transportation sector, the residential heating and the industry for different types of energy source. (A.L.B.)

  1. Hydro-energy; Energie hydraulique

    Energy Technology Data Exchange (ETDEWEB)

    Bacher, P. [Electricite de France (EDF), 75 - Paris (France); Tardieu, B. [Coyne et Bellier, 92 - Gennevilliers (France)

    2005-07-01

    The first part of this study concerns the different type of hydraulic works. The second part presents the big hydro-energy, its advantages and disadvantages, the industrial risks, the electric power transport network, the economy and the development perspectives. The third part presents the little hydro-energy, its advantages and disadvantages, the decentralized production and the development perspectives. (A.L.B.)

  2. Energy materials

    CERN Document Server

    Bruce, Duncan W; Walton, Richard I

    2011-01-01

    In an age of global industrialisation and population growth, the area of energy is one that is very much in the public consciousness. Fundamental scientific research is recognised as being crucial to delivering solutions to these issues, particularly to yield novel means of providing efficient, ideally recyclable, ways of converting, transporting and delivering energy. This volume considers a selection of the state-of-the-art materials that are being designed to meet some of the energy challenges we face today. Topics are carefully chosen that show how the skill of the synthetic chemist can

  3. Descriptif et qualification d'un mode opératoire de soudage pour les matériaux métalliques - Épreuve de qualification d'un mode opératoire de soudage - Partie 6: Soudage à l'arc et aux gaz du cuivre et de ses alliages

    CERN Document Server

    2006-01-01

    Descriptif et qualification d'un mode opératoire de soudage pour les matériaux métalliques - Épreuve de qualification d'un mode opératoire de soudage - Partie 6: Soudage à l'arc et aux gaz du cuivre et de ses alliages

  4. BIOMASS ENERGY AND ENERGY FORESTRY

    Directory of Open Access Journals (Sweden)

    Fahrettin Tilki

    2003-04-01

    Full Text Available Biomass fuels account for nearly 14% of the world’s energy. Energy forestry has been investigated since the mid-1960s to produce fiber for the paper and pulp industry. In the 1970s, following the oil crises, the emphasis switched to producing woody biomass for energy using fast-growing trees. Fastgrowing broadleaved trees, such as poplars and willows are grown at close spacing and under intensive management systems more akin to agriculture practice than forestry. In Turkey, rehabilitation studies in especially oak coppice stands are thought to be a part of the energy forestry, but the areas coppice stands grow on and species common in those areas are not suitable for modern energy forestry used in developed countries.

  5. Règlement de sécurité contre l'incendie relatif aux établissements recevant du public dispositions générales et commentaires de la commission centrale de sécurité

    CERN Document Server

    2015-01-01

    L’ouvrage comporte : les dispositions des Codes de la construction et de l'habitation, et l'urbanisme relatives à la protection contre l'incendie ; les articles : GN, GE, CO, AM, DF, CH, GZ, EL, EC, AS, GC et MS ; les instructions techniques ; les textes relatifs aux commissions de sécurité ; les textes concernant l’accessibilité des personnes handicapées ; les textes intéressant les qualifications des personnels des services de sécurité des ERP (SSIAP) ; la jurisprudence sur les ERP avec des arrêts du Conseil d'État et des arrêts des cours administratives d'appel.

  6. Arnaud de Lajartre, Vincent Gaboriau (dir., 2004, Les Collectivités Territoriales face aux risques physiques, Paris, L’Harmattan, collection « Logiques juridiques », 261 p.

    Directory of Open Access Journals (Sweden)

    Stéphane Callens

    2005-02-01

    Full Text Available Cet ouvrage réunit les contributions d’un colloque qui s’est tenu à Angers en mars 2002, sur le thème « Les Collectivités Territoriales face aux risques physiques ». Il faut entendre par « risques physiques », l’ensemble des risques non directement financiers, qu’ils soient « majeurs » (catastrophes naturelles ou technologiques, ou « mineurs » (accidents. Les treize contributions sont toutes intéressantes en elles-mêmes. On peut regretter toutefois que les éditeurs n’aient pas fait un effor...

  7. L’enseignement clinique du droit de l’immigration aux Etats-Unis : la clinique de l’Université de Californie Davis et le programme DACA

    OpenAIRE

    Kahssay, Jihan A.

    2014-01-01

    Les cliniques de l'immigration jouent un rôle important et original dans l'enseignement du droit de l'immigration aux USA. Elle remplissent également un rôle social important dans l'accès au droit pour les publics défavorisés. Dans cette interview, J. Kahssay, avocate et chargée du programme DACA à la clinique du droit de l'immigration de l'Université de Californie Davis (King hall school of law), présente le fonctionnement général de la clinique du droit de l'immigration de UC Davis. Elle dé...

  8. Diversité faunique et distribution des activités de braconnage dans la Réserve de Biosphère de la Mare aux Hippopotames au Burkina Faso

    OpenAIRE

    Dibloni, Ollo Théophile; Millogo, Alfred Nicolas; Ouedraogo, Amadé Junior; Guenda, Wendengoudi; Vermeulen, Cédric

    2011-01-01

    La faune sauvage dans la Réserve de Biosphère de la Mare aux Hippopotames du Burkina Faso est très peu connue. Cette étude vise à inventorier les différentes espèces de mammifères sauvages et à recenser les activités de braconnage rencontrées dans cette réserve. Des dénombrements pédestres ont été réalisés en 2004, 2005, 2006 et 2007 suivant la méthode de transect linéaire à largeur variable. Ils ont consisté à suivre l’évolution de l’effectif des mammifères sauvages selon les con...

  9. Causes of low vision and use of optical aids in the elderly Causas de baixa visão e uso de auxílio óptico por idosos

    Directory of Open Access Journals (Sweden)

    Keila Monteiro de Carvalho

    2004-01-01

    Full Text Available PURPOSE: To determine the causes of low vision in an elderly population attended by a university visual rehabilitation service and to check for the use of prescribed optical aids. METHOD: A cross-sectional study was carried out on patients aged 60 years or over attending for the first time a university low vision service in 2001. Ophthalmic reevaluation and interview were performed by means of a structured questionnaire in 2002. RESULTS: The sample comprised 50 subjects aged between 60 and 90 years. Severe low vision (20/200 was present in 68.0% of patients. The main cause of low vision was age-related macular degeneration (44.0%. Regarding literacy, 16.0% were illiterate and 72.0% had completed fundamental schooling. Thirty-one patients (62.0% had been prescribed optical aids; 54.8% of these patients stated that they use them. A majority (70.6% held a favorable opinion of these aids. CONCLUSIONS: The main cause of low vision was age-related macular degeneration. Approximately half of those receiving prescriptions reported actually using the aids in their daily activities. Making best use of residual vision in the elderly population with visual impairment is a priority, given the social context, if the independence necessary for enhanced quality of life is to be achieved.OBJETIVO: Determinar causas de baixa visão de população idosa atendida por serviço universitário de reabilitação visual e verificar a utilização dos auxílios ópticos prescritos. MÉTODO: Foi realizado estudo transversal entre pacientes de idade igual ou superior a 60 anos, atendidos pela primeira vez por serviço de visão subnormal em 2001. Foram submetidos à reavaliação oftalmológica e entrevistados mediante a aplicação de questionário estruturado em 2002. RESULTADOS: A amostra foi formada por 50 sujeitos de idades entre 60 e 90 anos. Apresentaram baixa visão acentuada (acuidade visual < 20/200 68,0% dos pacientes. A principal causa de baixa visão foi a

  10. Méthodes pour la validation de modèles formels pour la sûreté de fonctionnement et extension aux problèmes multi-physiques

    OpenAIRE

    Adeline, Romain

    2011-01-01

    Pour certifier un système aéronautique, des études de Sûreté de Fonctionnement (SdF) visent à démontrer qu’il répond à des exigences de sécurité de haut niveau. La complexité des systèmes étudiés ayant évolué, les exigences à démontrer devenant toujours plus nombreuses, les analyses actuelles (e.g. arbre de défaillance) peuvent aujourd’hui présenter des limites d’utilisation. Pour aller à l’encontre de ces limites, l’Ingénierie Dirigée par les Modèles s’est développée et s’intéresse aux étude...

  11. Segmentation du nombre de sinistres en assurance : de la loi de Poisson aux modèles gonflés à zéro et à barrière

    OpenAIRE

    Boucher, Jean-Philippe

    2007-01-01

    La première partie de la thèse s'intéresse aux modèles de classification du nombre de réclamations sous l'hypothèse que toutes les observations analysées dans la base de données sont indépendantes. En introduisant les caractéristique du risque dans la moyenne par une fonction de score, le développe-ment de ce type de modèles permet de mieux comprendre l'impact de certaines caractéristiques sur la probabilité de réclamer à l'assureur. De plus, en utilisant des modèles qui diffèrent de la loi...

  12. Developpement d'une plateforme de calcul d'equilibres chimiques complexes et adaptation aux problemes electrochimiques et d'equilibres contraints

    Science.gov (United States)

    Neron, Alex

    Avec l'arrivée de l'environnement comme enjeu mondial, le secteur de l'efficacité énergétique prend une place de plus en plus importante pour les entreprises autant au niveau économique que pour l'image de la compagnie. Par le fait même, le domaine des technologies de l'énergie est un créneau de recherche dont les projets en cours se multiplient. D'ailleurs, un des problèmes qui peut survenir fréquemment dans certaines entreprises est d'aller mesurer la composition des matériaux dans des conditions difficiles d'accès. C'est le cas par exemple de l'électrolyse de l'aluminium qui se réalise à des températures très élevées. Pour pallier à ce problème, il faut créer et valider des modèles mathématiques qui vont calculer la composition et les propriétés à l'équilibre du système chimique. Ainsi, l'objectif global du projet de recherche est de développer un outil de calcul d'équilibres chimiques complexes (plusieurs réactions et plusieurs phases) et l'adapter aux problèmes électrochimiques et d'équilibres contraints. Plus spécifiquement, la plateforme de calcul doit tenir compte de la variation de température due à un gain ou une perte en énergie du système. Elle doit aussi considérer la limitation de l'équilibre due à un taux de réaction et enfin, résoudre les problèmes d'équilibres électrochimiques. Pour y parvenir, les propriétés thermodynamiques telles que l'énergie libre de Gibbs, la fugacité et l'activité sont tout d'abord étudiées pour mieux comprendre les interactions moléculaires qui régissent les équilibres chimiques. Ensuite, un bilan énergétique est inséré à la plateforme de calcul, ce qui permet de calculer la température à laquelle le système est le plus stable en fonction d'une température initiale et d'une quantité d'énergie échangée. Puis, une contrainte cinétique est ajoutée au système afin de calculer les équilibres pseudo-stationnaires en évolution dans le temps. De plus, la

  13. Aux origines du « baroque littéraire » en France : 1935-1950. Aperçus historiographiques

    Directory of Open Access Journals (Sweden)

    Guy Catusse

    2012-06-01

    caractéristiques politiques, économiques, idéologiques d’une société et les formes littéraires qui en expriment les tendances et les tensions ? Peut-on considérer, autrement que de façon métaphorique, qu’il existe des catégories esthétiques baroques communes aux arts visuels et à ceux de l’écriture ?French academic research has always been reluctant to use the notion of baroque to typify the literary production of the period between the end of Renaissance and the beginnings of classicism. It is not before the opening of the fifties and the impact of Jean Rousset’s book La littérature de l’âge baroque en France. Circé et le paon, that numerous studies and polemics made familiar, if not indisputable, the notion of baroque applied to literature. The fame of publications which came out through these years of « baroque mirage » (Pierre Charpentrat must not live down important forerunners works. Between 1935 and 1950, a few french-writing historians specialized in the xvith and xviith centuries french literature, opened up the field. These learned works, the first ones that explicitely refered to this notion of baroque , are the main topic of this paper. The purpose being less to examine their content in great detail than to approach them through historiography : who were these researchers ? where and in which kind of institutional framework did they work ? through which mediums and networks did their works spread ? how was this question of baroque, a new one for the french-writing historians of french literature, addressed ? A reviewing of these questions shows that throughout these fifteen years, questions were addressed, themes were explored, polemics were launched which remained cardinal in the writings about baroque during the two following decades : should we merely assign the epithet of baroque to the literary production of a determined historical moment or, conversely, picture it as a set of formal caracters, perennial and

  14. Chronologie pariétale des œuvres magdaléniennes du Roc-aux-Sorciers (Angles-sur-l’Anglin, Vienne : entre tradition et innovation

    Directory of Open Access Journals (Sweden)

    Geneviève Pinçon

    2012-04-01

    Full Text Available L’abri sous-roche magdalénien du Roc-aux-Sorciers (Angles-sur-l’Anglin, Vienne joue un rôle essentiel et novateur pour l’enrichissement de notre connaissance sur l’art pariétal sculpté en raison de l’impact de cette technique sur les œuvres monumentales qu’il livre. Ayant constaté à plusieurs reprises des phénomènes de retaille sur la paroi, ainsi que la présence de vestiges de sculpture volontairement effacés, nous abordons la chronologie des œuvres pariétales en rappelant le contexte archéologique de ces œuvres et en analysant sur quelques exemples l’évolution des thèmes artistiques, les choix iconographiques perceptibles au cours de l’occupation de ce site.The magdalenian rock-shelter of Le Roc-aux-Sorciers (Angles-sur-l’Anglin, Vienne is playing an essential and innovative role in the enrichment of our knowledge of sculpted parietal art, given the impact of this technique on the monumental work it produces. Having noted several examples of recarving on the wall, as well as the presence of traces of sculpture that have been deliberately erased, we tackle the chronology of the parietal works, emphasising their archaeological context and analysing through several examples the evolution of the artistic themes, the iconographic choices which are perceptible during the site's occupation. (traduction : Paul Bahn

  15. Les règles de mélange appliquées aux équations d'état Mixing Rules Applied to Equations of State

    Directory of Open Access Journals (Sweden)

    Lermite C.

    2006-11-01

    Full Text Available Sous haute pression, les propriétés thermodynamiques et les équilibres de phase sont généralement évalués en appliquant la même équation d'état aux phases en présence. Les règles de mélange déterminent la variation des paramètres avec la composition. L'extension de ces méthodes à des systèmes polaires exige une révision de ces règles. Une seconde difficulté se présente si on applique une équation d'état contenant plus de deux paramètres. Les relations existant entre les grandeurs d'excès et les règles de mélange apportent une solution aux problèmes ainsi définis. Les exemples proposés portent sur la prédiction des équilibres de phase de systèmes ternaires, l'application du concept de contributions de groupes et l'utilisation d'une équation d'état contenant quatre paramètres. Under high pressure, thermodynamic properties and phase equilibria are generally evaluated by applying the same equation of state to the phases present. Mixing rules determine how parameters vary with the composition. The extension of such methods to polar systems requires these rules to be revised. A second difficulty arises if an equation of state containing more than two parameters is used. The relations existing between excess functions and mixing rules provide a solution to the problems thus defined. The examples proposed concern the predicting of phase equilibria for ternary systems, the application of the concept of group contributions and the use of an equation of state containing four parameters.

  16. Salinity Energy.

    Science.gov (United States)

    Schmitt, Walter R.

    1987-01-01

    Discussed are the costs of deriving energy from the earth's natural reserves of salt. Argues that, as fossil fuel supplies become more depleted in the future, the environmental advantages of salinity power may prove to warrant its exploitation. (TW)

  17. Les effets des interfaces sur les proprietes magnetiques et de transport des multicouches nickel/iron et cobalt/silver

    Science.gov (United States)

    Veres, Teodor

    Cette these est consacree a l'etude de l'evolution structurale des proprietes magnetiques et de transport des multicouches Ni/Fe et nanostructures a base de Co et de l'Ag. Dans une premiere partie, essentiellement bibliographique, nous introduisons quelques concepts de base relies aux proprietes magnetiques et de transport des multicouches metalliques. Ensuite, nous presentons une breve description des methodes d'analyse des resultats. La deuxieme partie est consacree a l'etude des proprietes magnetiques et de transport des multicouches ferromagnetiques/ferromagnetiques Ni/Fe. Nous montrerons qu'une interpretation coherente de ces proprietes necessite la prise en consideration des effets des interfaces. Nous nous attacherons a mettre en evidence, a evaluer et a etudier les effets de ces interfaces ainsi que leur evolution, et ce, suite a des traitements thermiques tel que le depot a temperature elevee et l'irradiation ionique. Les analyses correlees de la structure et de la magnetoresistance nous permettront d'emettre des conclusions sur l'influence des couches tampons entre l'interface et le substrat ainsi qu'entre les couches elles-memes sur le comportement magnetique des couches F/F. La troisieme partie est consacree aux systemes a Magneto-Resistance Geante (MRG) a base de Co et Ag. Nous allons etudier l'evolution de la microstructure suite a l'irradiation avec des ions Si+ ayant une energie de 1 MeV, ainsi que les effets de ces changements sur le comportement magnetique. Cette partie debutera par l'analyse des proprietes d'une multicouche hybride, intermediaire entre les multicouches et les materiaux granulaires. Nous analyserons a l'aide des mesures de diffraction, de relaxation superparamagnetique et de magnetoresistance, les evolutions structurales produites par l'irradiation ionique. Nous etablirons des modeles qui nous aideront a interpreter les resultats pour une serie des multicouches qui couvrent un large eventail de differents comportements magnetiques

  18. Geothermal energy

    OpenAIRE

    Manzella A.

    2015-01-01

    Geothermal technologies use renewable energy resources to generate electricity and direct use of heat while producing very low levels of greenhouse-gas (GHG) emissions. Geothermal energy is stored in rocks and in fluids circulating in the underground. Electricity generation usually requires geothermal resources temperatures of over 100°C. For heating, geothermal resources spanning a wider range of temperatures can be used in applications such as space and district heating (and cooling, with p...

  19. Energy Storage

    Energy Technology Data Exchange (ETDEWEB)

    Mukundan, Rangachary [Los Alamos National Lab. (LANL), Los Alamos, NM (United States)

    2014-09-30

    Energy storage technology is critical if the U.S. is to achieve more than 25% penetration of renewable electrical energy, given the intermittency of wind and solar. Energy density is a critical parameter in the economic viability of any energy storage system with liquid fuels being 10 to 100 times better than batteries. However, the economical conversion of electricity to fuel still presents significant technical challenges. This project addressed these challenges by focusing on a specific approach: efficient processes to convert electricity, water and nitrogen to ammonia. Ammonia has many attributes that make it the ideal energy storage compound. The feed stocks are plentiful, ammonia is easily liquefied and routinely stored in large volumes in cheap containers, and it has exceptional energy density for grid scale electrical energy storage. Ammonia can be oxidized efficiently in fuel cells or advanced Carnot cycle engines yielding water and nitrogen as end products. Because of the high energy density and low reactivity of ammonia, the capital cost for grid storage will be lower than any other storage application. This project developed the theoretical foundations of N2 catalysis on specific catalysts and provided for the first time experimental evidence for activation of Mo 2N based catalysts. Theory also revealed that the N atom adsorbed in the bridging position between two metal atoms is the critical step for catalysis. Simple electrochemical ammonia production reactors were designed and built in this project using two novel electrolyte systems. The first one demonstrated the use of ionic liquid electrolytes at room temperature and the second the use of pyrophosphate based electrolytes at intermediate temperatures (200 – 300 ºC). The mechanism of high proton conduction in the pyrophosphate materials was found to be associated with a polyphosphate second phase contrary to literature claims and ammonia production rates as high as 5X 10

  20. Saving Energy

    Institute of Scientific and Technical Information of China (English)

    2006-01-01

    More and more Chinese consumers are beginning to think about their energy-saving needs when buying apartments. The energy-saving estate market is huge, which provides great opportunities for companies in the business, especially foreign investors. But just how big is this market and how is it developing? Which fields in this industry are suitable for foreign businesses? With these questions in mind, Beijing Review spoke with Li Shuren, Vice Secretary General of the China Real Estate and Housing Research ...

  1. Energy awareness

    Energy Technology Data Exchange (ETDEWEB)

    1977-01-01

    The objective of the Symposium for Public Awareness on Energy was to provide an information exchange among the members of the technical community and the public, civic, fraternal, service, and labor organizations on timely energy-related issues. The 1977 symposium was oriented toward state and local governmental officials in the southeastern states. Since it is these officials who have the responsibility for the development and actualization of local energy strategies, the program was directed toward providing information which would be of help to them in considering energy plans. The symposium presentations featured speakers who are recognized in many facets of the energy field. A variety of views were expressed and a number of policy alternatives were suggested. It is hoped that the presentations provided the motivation for the audience to return to their respective communities with a new and expanded perspective regarding energy issues and policies. The private and public organizations represented at the symposium can continue to provide pertinent information to those who are interested. A separate abstract was prepared for each of the 9 presentations.

  2. Present day situation and perspectives of the nuclear sector in the USA; La situation actuelle et les perspectives du secteur nucleaire aux Etats-Unis

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2008-07-01

    With the restart-up of Browns Ferry NPP on May 22, 2007, the US nuclear park comprises now 104 reactors in operation: 35 BWR-type and 69 PWR-type. NPPs are present in only 31 states and mainly in the eastern half of the country. Nuclear energy represents 20% of the US energy mix (coal: 50%, gas: 19%, hydro-power: 6%, petroleum: 3% and other renewable energies: 2%). The highest average availability rate in power generation is reached by nuclear energy (89.9%). The nuclear power generation reached 787.2 TWh in 2006, i.e. the second best result after the 2004 record (788.5 TWh). This document presents also some nuclear safety and radioprotection indicators (number of unplanned outages, failures, injury frequency rate), the programme of licenses extension, the permissions for power increase, the demands for design certification, for early site permit, and for combined construction permit and operating license. The regulation may be different from one state to the other and sometimes not favorable to a re-launch of nuclear energy. The situation of each state in this domain is presented in appendix. (J.S.)

  3. Organisation of biological research carried out in the United States by the A.E.C. or under her contract (1960); Organisation des recherches biologiques menees aux Etats-Unis par l'A.E.C. ou sous son egide. Compte-rendu sommaire d'une mission d'etude (1960)

    Energy Technology Data Exchange (ETDEWEB)

    Pellerin, J. [Commissariat a l' Energie Atomique, Saclay (France).Centre d' Etudes Nucleaires

    1960-07-01

    This report is based on information gathered in the course of a trip to the United States, in November and December 1958 which consisted chiefly of visits to the main biological and medical research laboratories and discussions with the heads of these establishments. A description is given of the general organisation of the Atomic Energy Commission's Division of Biology and Medicine, and of the distribution of responsibility for radiation protection work and for biological, medical and agricultural research amongst the various Services attached to it; this is followed by a more detailed account of the activities carried on in this field at the great national laboratories. Finally, the systems of collaboration set up with external research organisations in the form of research contracts are examined, together with the substantial help provided by the A.E.C. for biological, medical and agricultural research in general, owing to a systematic policy of subsidising the distribution of radioisotopes for this purpose. (author) [French] Le present rapport a ete etabli sur la base des renseignements recueillis au cours d'un voyage d'etude aux Etats-Unis, en novembre et decembre 1958, comportant notamment la visite des principaux laboratoires de recherche biologique et medicale et des entretiens avec les principaux responsables de ces laboratoires. Apres une description de l'organisation generale de la 'Division of Biology and Medicine' de l'Atomic Energy Commission et de la repartition entre les divers Services qui lui sont rattaches des responsabilites concernant la protection contre les radiations et la Recherche biologique, medicale et agronomique, des indications plus detaillees sont donnees au sujet des activites poursuivies dans ce domaine au sein des grands laboratoires nationaux. Sont examinees enfin, l'importance et les modalites de la collaboration instituee avec les Organismes de Recherche exterieurs sous la forme de

  4. The mechanism of contribution to the taxes of the electricity public service; Le mecanisme de contribution aux Charges de Service Public d'Electricite

    Energy Technology Data Exchange (ETDEWEB)

    Blonde, G.; Poizat, F.; Triboulet, A. [IED, Louvain-la-Neuve (Belgium)

    2008-02-15

    This report presents the results of an expertise realized by the Institute of the Energy and development for the CCE of EDF. The CSPE is a mechanism of mutualization of taxes of the electricity public service. These taxes concern the impact of the tariffs adjustment, the assistance to systems of energy conservation, the solidarity to poor households. the document presents the historical aspects and the bases of the mechanism, the cost of the global compensation, the foundations of this mutualization system, the forecasts and some recommendations. (A.L.B.)

  5. Energy prices; Prix des energies

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2007-01-15

    This folder presents a synthesis of the main energy tariffs and prices in January 2007 and their comparison with the average annual data for 2005 and 2006. Data are presented in tables by sector of activity and by energy source: transports (automotive fuels), residential (fuel oil, district heating, propane, coal, wood-fuel, electricity, natural gas), industry (natural gas, electricity, heavy fuel oil, coal). (J.S.)

  6. Geothermal energy

    Directory of Open Access Journals (Sweden)

    Manzella A.

    2015-01-01

    Full Text Available Geothermal technologies use renewable energy resources to generate electricity and direct use of heat while producing very low levels of greenhouse-gas (GHG emissions. Geothermal energy is stored in rocks and in fluids circulating in the underground. Electricity generation usually requires geothermal resources temperatures of over 100°C. For heating, geothermal resources spanning a wider range of temperatures can be used in applications such as space and district heating (and cooling, with proper technology, spa and swimming pool heating, greenhouse and soil heating, aquaculture pond heating, industrial process heating and snow melting. Geothermal technology, which has focused so far on extracting naturally heated steam or hot water from natural hydrothermal reservoirs, is developing to more advanced techniques to exploit the heat also where underground fluids are scarce and to use the Earth as a potential energy battery, by storing heat. The success of the research will enable energy recovery and utilization from a much larger fraction of the accessible thermal energy in the Earth’s crust.

  7. Dark Energy

    CERN Document Server

    Kesavan, Aruna

    2009-01-01

    Dark energy is one of the mysteries of modern science. It is unlike any known form of matter or energy and has been detected so far only by its gravitational effect of repulsion. Owing to its effects being discernible only at very very large distance scales, dark energy was only detected at the turn of the last century when technology had advanced enough to observe a greater part of the universe in finer detail. The aim of the report is to gain a better understanding of the mysterious dark energy. To this end, both theoretical methods and observational evidence are studied. Three lines of evidence, namely , the redshift data of type Ia supernovae, estimates of the age of the universe by various methods, and the anisotropies in the cosmic background radiation, build the case for existence of dark energy. The supernova data indicate that the expansion of the universe is accelerating. The ages of the oldest star clusters in the universe indicate that the universe is older than previously thought to be. The aniso...

  8. Geothermal energy

    Science.gov (United States)

    Manzella, A.

    2015-08-01

    Geothermal technologies use renewable energy resources to generate electricity and direct use of heat while producing very low levels of greenhouse-gas (GHG) emissions. Geothermal energy is stored in rocks and in fluids circulating in the underground. Electricity generation usually requires geothermal resources temperatures of over 100°C. For heating, geothermal resources spanning a wider range of temperatures can be used in applications such as space and district heating (and cooling, with proper technology), spa and swimming pool heating, greenhouse and soil heating, aquaculture pond heating, industrial process heating and snow melting. Geothermal technology, which has focused so far on extracting naturally heated steam or hot water from natural hydrothermal reservoirs, is developing to more advanced techniques to exploit the heat also where underground fluids are scarce and to use the Earth as a potential energy battery, by storing heat. The success of the research will enable energy recovery and utilization from a much larger fraction of the accessible thermal energy in the Earth's crust.

  9. Energie et développement

    Directory of Open Access Journals (Sweden)

    Gilles Carbonnier

    2011-05-01

    Full Text Available Cet article introduit le dossier thématique consacré à la relation intime entre énergie et développement. Les auteurs retracent l’importance des énergies fossiles dans la croissance économique du monde occidental dès le XIXe siècle et le rôle central du pétrole au XXe siècle pour s’interroger sur les limites de ce modèle de développement face aux contraintes géologiques et climatiques. Ils examinent le fossé et les malentendus qui séparent les sciences de l’homme  et les sciences de la nature, ainsi que les récentes initiatives de dialogue interdisciplinaire autour de l’économie écologique et de l’écologie industrielle. Ils analysent ensuite les enjeux spécifiques aux pays en développement ainsi que l’inadéquation du système de gouvernance internationale pour faire face aux tensions croissantes liées à la déplétion du pétrole, aux asymétries d’accès et d’exploitation des ressources minérales et aux conséquences environnementales d’une consommation croissante de ressources non renouvelables.

  10. Energy Deskbook

    Energy Technology Data Exchange (ETDEWEB)

    Glasstone, S

    1982-06-01

    The purpose of the Energy Deskbook is to serve as a convenient reference to definitions of energy-related terms and descriptions of current and potential energy sources and their utilization. The material is presented at a low technical level with emphasis on general principles, which are not difficult to understand, rather than technology. The entries vary in length from a few lines to several pages, according to circumstances. As a general rule, each topic is defined and outlined in the first paragraph; this may be followed by a more detailed treatment, as required. An important feature of the Deskbook is the use of boldface (heavy) type for cross references. Words in the text set in boldface are the titles of articles where the particular subjects are described.

  11. Ferramenta de auxílio no processo de medição de energia elétrica utilizando inteligência computacional

    Directory of Open Access Journals (Sweden)

    Marco Antônio Silva Pereira

    2015-06-01

    Full Text Available Este artigo aborda assuntos relacionados aos problemas encontrados na medição de energia elétrica em decorrência de distorções harmônicas da rede. Tais distorções podem ser capazes de provocar erros consideráveis, acarretando, consequentemente, em cobrança de uma quantidade indevida de energia pela empresa fornecedora. Tendo em vista esse problema, o objetivo deste artigo consiste em tornar o processo de medição de energia elétrica mais eficiente por meio de conceitos referentes a Redes Neurais Artificias e Redes Neuro-Fuzzy.Palavras-chave: Medição de energia elétrica. Distorções Harmônicas. Redes Neurais Artificiais. Redes Neuro-Fuzzy.AbstractA tool to assist in the process of electric energy measurement by the use of computational intelligenceThis article discusses issues related to problems encountered on electrical energy measurement due to harmonics distortions in the network. Such distortions may be able to cause considerable errors and consequently an undue amount of energy collection by the supplier. In view of this problem, the objective of this article is to make the process of measuring more efficient electricity through concepts related to Artificial Neural Networks and Neuro-Fuzzy Networks.Keywords: Electrical energy measurement. Harmonic Distortions. Artificial Neural Networks. Neuro-Fuzzy Networks.

  12. Energy Futures

    DEFF Research Database (Denmark)

    Davies, Sarah Rachael; Selin, Cynthia

    2012-01-01

    foresight and public and stakeholder engagement are used to reflect on?and direct?the impacts of new technology. In this essay we draw on our experience of anticipatory governance, in the shape of the ?NanoFutures? project on energy futures, to present a reflexive analysis of engagement and deliberation. We...... draw out five tensions of the practice of deliberation on energy technologies. Through tracing the lineages of these dilemmas, we discuss some of the implications of these tensions for the practice of civic engagement and deliberation in a set of questions for this community of practitioner-scholars....

  13. Energy Efficiency

    DEFF Research Database (Denmark)

    Petrichenko, Ksenia; Farrell, Timothy Clifford; Thorsch Krader, Thomas

    2016-01-01

    This report was commissioned by REN21 and produced in collaboration with a global network of research partners. Financing was provided by the German Federal Ministry for Economic Cooperation and Development (BMZ), the German Federal Ministry for Economic Affairs and Energy (BMWi), the Government...

  14. Creating Energy.

    Science.gov (United States)

    Wilson, David A.

    The author of this booklet is an engineer who conducts experiments in solar energy. Here he has described basic principles of the field. He also details methods of constructing a variety of solar implements, including solar panels, solar cells, a concentrating collector and a solar furnace. The book is intended for the layman and contains…

  15. Dark energy without dark energy

    CERN Document Server

    Wiltshire, David L

    2007-01-01

    An overview is presented of a recently proposed "radically conservative" solution to the problem of dark energy in cosmology. The proposal yields a model universe which appears to be quantitatively viable, in terms of its fit to supernovae luminosity distances, the angular scale of the sound horizon in the cosmic microwave background (CMB) anisotropy spectrum, and the baryon acoustic oscillation scale. It may simultaneously resolve key anomalies relating to primordial lithium abundances, CMB ellipticity, the expansion age of the universe and the Hubble bubble feature. The model uses only general relativity, and matter obeying the strong energy condition, but revisits operational issues in interpreting average measurements in our presently inhomogeneous universe, from first principles. The present overview examines both the foundational issues concerning the definition of gravitational energy in a dynamically expanding space, the quantitative predictions of the new model and its best-fit cosmological parameter...

  16. La frontière boliviano-paraguayenne : des contentieux historiques aux dynamiques d’intégration énergétiques (The Bolivia-Paraguay Border: From Old Enemies to the Integrated Energy Powerhouses

    Directory of Open Access Journals (Sweden)

    Laurent Lacroix

    2011-01-01

    Full Text Available En avril 2009, la Bolivie et le Paraguay signent un traité de démarcation frontalière qui met fin à un contentieux frontalier né de la guerre du Chaco (1932-1935. Pour les deux seuls pays enclavés du continent américain, l'enjeu consiste désormais à réhabiliter une région frontalière qui a longtemps constitué un glacis. Malgré les projets d'intégration économique et de coopération bilatérale, la frontière reste un thème sensible, à l'origine de quelques tensions diplomatiques et militaires. Les deux pays devront outrepasser ces contretemps liés à la mémoire collective encore marquée par le conflit armé qui les a opposés. Sans quoi, le Chaco pourrait bien demeurer un angle mort dans les mégaprojets définis dans le cadre de l'intégration de la région sud-américaine (IIRSA et rester un espace idéal pour les contrebandiers et les trafiquants.(In April 2009, Bolivia and Paraguay signed a treaty establishing their border, ending a dispute born of the war of Chao (1932-1935. For the two land-locked countries of the American continent the challenge was to establish a border region which had long been a buffer zone. Despite economic integration and bilateral cooperation, the border remains a sensitive issue and has been the source of diplomatic and military tension. The two countries must surpass these difficulties stemming from the collective memory of the armed conflict between them. Otherwise Chao will remain the stumbling block to the megaprojects of South American regional integration (IIRSA and borders will remain an ideal place for smugglers and drug traffickers.

  17. Study of the influence of chemical binding on resonant absorption and scattering of neutrons; Etude de l'influence des liaisons chimiques sur l'absorption et la diffusion des neutrons aux energies de resonance

    Energy Technology Data Exchange (ETDEWEB)

    Naberejnev, D.G. [Aix-Marseille-1 Univ., 13 - Marseille (France)

    1999-02-01

    At present time the problem of taking into account of the crystalline binding in the heavy nuclei resonance range is not correctly treated in nuclear data processing codes. The present work deals separately with resonant absorption and scattering of neutrons. The influence of crystalline binding is considered for both types of reactions in the harmonic crystal frame work. The harmonic crystal model is applied to the study of resonant absorption cross sections to show the inconsistency of the free gas model widely in use in reactor neutronics. The errors due to the use of the latter were found to be non negligible. These errors should be corrected by introducing a more elaborated harmonic crystal model in codes for resonances analysis and on the nuclear data processing stage. Currently the influence of crystalline binding on transfer cross section in the resonance domain is taken into account in a naive manner using the model of the free nucleus at rest in the laboratory system. In this work I present a formalism (Uncoupled Phonon Approximation) which permits to consider in more detail the crystalline structure of the nuclear fuel. This formalism shows new features in comparison with the static model. (author)

  18. The financial help given by the French government to LPG-fueled taxis; L'aide financiere de l'etat aux taxis GPL

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-02-01

    In the framework of its 'clean vehicle' air pollution abatement program, the French government has set up a financial help managed by the French agency of environment and energy mastery (Ademe) and devoted to taxi fleets which use LPG fuels. This brochure gives a general presentation of LPG-fueled vehicles (equipment, cost, service stations..) and explains the conditions of allocation of the help. (J.S.)

  19. The future of the nuclear wastes and the spent fuels at the United States; Le devenir des dechets nucleaires et des combustibles uses aux Etats-Unis

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2006-07-01

    The USA regulation distinguishes three classes of nuclear wastes: the low activity wastes under the federal states control, the wastes contaminated by long life radionuclides (transuranic elements) and the high activity wastes. The two last classes are controlled by the DOE (Department of energy). The different classes management are discussed as the DOE obligations towards the operators, the storage project of Yucca Mountain and Private fuel storage of Skull Valley. (A.L.B.)

  20. Les transitions énergétiques urbaines du XIXe au XXIe siècle : de la biomasse aux combustibles fossiles et fissiles à Paris (France).

    OpenAIRE

    Kim, Eun Hye

    2013-01-01

    Increasing urban natural resource consumption and particularly fossil energy consumption is one of the important factors of global environment alteration. To understand the socioecological transition process for the city, we characterize it as a natral resource dependant system in material and ecological terms. Cities rnobilize a technical system to draw the external natural resource. Therefore, externality is a fundamental character of urban metabolism. We focus in this work on the relations...

  1. Uncertainties on decay heat power due to fission product data uncertainties; Incertitudes sur la puissance residuelle dues aux incertitudes sur les donnees de produits de fission

    Energy Technology Data Exchange (ETDEWEB)

    Rebah, J

    1998-08-01

    Following a reactor shutdown, after the fission process has completely faded out, a significant quantity of energy known as 'decay heat' continues to be generated in the core. The knowledge with a good precision of the decay heat released in a fuel after reactor shutdown is necessary for: residual heat removal for normal operation or emergency shutdown condition, the design of cooling systems and spent fuel handling. By the summation calculations method, the decay heat is equal to the sum of the energies released by individual fission products. Under taking into account all nuclides that contribute significantly to the total decay heat, the results from summation method are comparable with the measured ones. Without the complete covariance information of nuclear data, the published uncertainty analyses of fission products decay heat summation calculation give underestimated errors through the variance/covariance analysis in consideration of correlation between the basic nuclear data, we calculate in this work the uncertainties on the decay heat associated with the summation calculations. Contribution to the total error of decay heat comes from uncertainties in three terms: fission yields, half-lives and average beta and gamma decay energy. (author)

  2. Energies prices; Prix des energies

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2005-08-15

    This document offers a synthesis of the tariffs and the energies prices in august 2005 in Paris, compared with the years 2003 and 2004. This sectoral presentation (transports, houses, industry) provides thus statistics on the prices of fuels, heating, propane, coal, wood fuels, electric power and gas. (A.L.B.)

  3. Role of LPG as an energy substitute in Algeria; Role des G.P.L. comme energie de substitution en Algerie

    Energy Technology Data Exchange (ETDEWEB)

    Boukadoum, Abdelhamid; Houghlaouene, Samir

    2010-09-15

    Algeria is a leader country in LPG industry. The availability of resources and the upstream production development efforts have oriented the large energy choices in terms of domestic market need satisfaction. LPG (propane and butane) plays a massive role in the change towards clean energy (case of LPG versus gas) and towards more practical energy (i.e. the case of bulk propane versus the packed butane, or versus natural gas). [French] L'Algerie est un pays leader dans l'industrie des GPL. La disponibilite des ressources et les efforts de developpement de la production en amont ont oriente les grands choix energetiques en matiere de satisfaction des besoins du marche domestique. En effet, les GPL (propane et butane) jouent un role majeur dans la substitution vers les sources d'energie propres (cas du GPL/C par rapport aux essences) et vers des energies plus commodes (par exemple le cas du propane vrac par rapport au butane conditionne, voire par rapport au gaz naturel).

  4. Energy Recovery

    Science.gov (United States)

    1987-01-01

    The United States and other countries face the problem of waste disposal in an economical, environmentally safe manner. A widely applied solution adopted by Americans is "waste to energy," incinerating the refuse and using the steam produced by trash burning to drive an electricity producing generator. NASA's computer program PRESTO II, (Performance of Regenerative Superheated Steam Turbine Cycles), provides power engineering companies, including Blount Energy Resources Corporation of Alabama, with the ability to model such features as process steam extraction, induction and feedwater heating by external sources, peaking and high back pressure. Expansion line efficiency, exhaust loss, leakage, mechanical losses and generator losses are used to calculate the cycle heat rate. The generator output program is sufficiently precise that it can be used to verify performance quoted in turbine generator supplier's proposals.

  5. Use of optical aids by visually impaired students: social and cultural factors Uso de auxílios ópticos por escolares com deficiência visual: fatores socioculturais

    Directory of Open Access Journals (Sweden)

    Gelse Beatriz Martins Monteiro

    2006-08-01

    Full Text Available PURPOSE: To identify conceptions, social and cultural factors regarding the use of optical aids by visually impaired students and to present information to health and educational professionals. METHODS: Qualitative research using spontaneous theater (interactive theater modality based on improvisation as research instrument. To analyze data, an adapted form of the collective subject discourse technique - procedures for organization of verbal data - was applied. Scenes, gestures, expressions, silences and behaviors were added to the original proposal. The study population included all visually impaired students from elementary public schools, aged 10 to 14 years who attended a resource room in a São Paulo state city. The students were examined at a university low vision service. RESULTS: Little knowledge about the impairment and difficult adaptation to use of optical aids were identified. The students' behavior showed denial of own problems, discomfort on public use of aids and lack of participation in own health decisions. CONCLUSION: Analysis through spontaneous theater session allows the professional to gather information which is not possible to acquire in the health assistance atmosphere. Needs, difficulties and barriers the users found before the prescribed treatment were identified.OBJETIVO: Identificar concepções e verificar aspectos socioculturais a respeito do uso de auxílios ópticos por escolares deficientes visuais e oferecer informações a profissionais das áreas de saúde e educacional. MÉTODOS: Utilizou-se pesquisa qualitativa mediante aplicação da técnica do teatro espontâneo - modalidade de teatro interativo, de improviso, construído a partir de histórias contadas pelos participantes. Para análise das informações colhidas, foi adaptada a técnica de análise do discurso do sujeito coletivo, conjunto de procedimentos de organização de dados discursivos de natureza verbal. Por se tratar de técnica psicodram

  6. Analyse d’un genre de discours spécialisé : les lettres annuelles de Warren Buffett aux actionnaires de Berkshire Hathaway et leur spécificité

    Directory of Open Access Journals (Sweden)

    Catherine RESCHE

    2010-09-01

    Full Text Available Cette étude a pour objet d’analyser un genre de discours spécialisé particulier au monde des entreprises. Les lettres aux actionnaires rédigées par Warren Buffett, dont la portée dépasse le cercle des actionnaires concernés, suscitent un intérêt hors du commun. Une analyse qualitative et quantitative portant sur le fond et la forme nous a permis de les comparer à un corpus témoin d’autres lettres aux actionnaires pour faire ressortir leur spécificité. La perspective diachronique qui a été adoptée nous a également donné l’occasion de mesurer l’évolution interne de ces documents sur une période de 32 ans. Les résultats de l’étude font ressortir une très grande présence de l’auteur dans son discours et la nature dialogique de ce discours. La « marqueterie discursive » atypique qui caractérise le style Buffett conduit également à envisager ses lettres comme des macro-actes de langage. Néanmoins, elles se rattachent sans ambiguïté au genre « lettre aux actionnaires » par la situation dans laquelle elles sont produites, le but qu’elles poursuivent et la fonction sociale qu’elles remplissent. Ce sont ces mêmes éléments qui permettent de les considérer comme un échantillon de discours spécialisé, même si leur syntaxe n’est pas spécifique et si le discours n’est pas particulièrement technique.The paper focuses on a particular genre which is characteristic of the corporate world. Warren Buffett’s letters to the shareholders seem to arouse unprecedented interest among readers who greatly outnumber his shareholders. The letters’ form and content were analyzed quantitatively and qualitatively and compared to a sample corpus of other letters to the shareholders in order to determine their specificity. The diachronic approach that was chosen was an opportunity to observe how Buffett’s letters have evolved over a period of 32 years. The findings of this analysis seem to indicate that the

  7. The Energy Crisis and Solar Energy

    Science.gov (United States)

    Bockris, J. O'M.

    1974-01-01

    Examines the status of the energy crisis in Australia. Outlines energy alternatives for the 1990's and describes the present status of solar energy research and the economics of solar energy systems. (GS)

  8. Cold energy

    Energy Technology Data Exchange (ETDEWEB)

    Wallace, John P., E-mail: jpw@castinganalysis.com [Casting Analysis Corp., PO Box 52, Weyers Cave, VA 24486 (United States)

    2015-12-04

    Deviations in Q for resonant superconducting radio frequency niobium accelerator cavities are generally correlated with resistivity loss mechanisms. Field dependent Qs are not well modeled by these classical loss mechanisms, but rather can represent a form of precision cavity surface thermometry. When the field dependent Q variation shows improvement with increasing B field level the classical treatment of this problem is inadequate. To justify this behavior hydrogen as a ubiquitous impurity in niobium, which creates measurable property changes, even at very low concentrations is typically considered the cause of such anomalous behavior. This maybe the case in some instances, but more importantly any system operating with a highly coherent field with a significant time dependent magnetic component at near 2° K will have the ability to organize the remaining free spins within the London penetration depth to form a coupled energy reservoir in the form of low mass spin waves. The niobium resonant cavities are composed of a single isotope with a large nuclear spin. When the other loss mechanisms are stripped away this may be the gain medium activated by the low level residual magnetic fields. It was found that one resonant cavity heat treatment produced optimum surface properties and then functioned as a MASER extracting energy from the 2° K thermal bath while cooling the cavity walls. The cavity operating in this mode is a simulator of what can take place in the wider but not colder universe using the cosmic microwave background (CMB) as a thermal source. The low mass, long lifetimes, and the scale of the magnetic spin waves on the weakly magnetized interstellar medium allows energy to be stored that is many orders of magnitude colder than the cosmic microwave background. A linear accelerator cavity becomes a tool to explore the properties of the long wave length magnetic spin waves that populate this cold low energy regime.

  9. Human energy

    OpenAIRE

    2010-01-01

    In the midst of big-oil record profits and growing debate on global warming, the Chevron Corporation launched its “Human Energy” public relations campaign. In television commercials and print advertisements, Chevron portrays itself as a compassionate entity striving to solve the planet’s energy crisis. Yet, the first term in this corporate oxymoron misleadingly reframes the significance of the second, suggesting that the corporation has a renewed focus. In depicting Chevron as a green/human o...

  10. Energy supply technologies. Nuclear energy

    Energy Technology Data Exchange (ETDEWEB)

    Lauritsen, Bent.; Nonboel, E. [Risoe National Lab. - DTU (Denmark); Vuori, S. [VTT (Finland)

    2007-11-15

    Nuclear power has long been controversial, especially in Europe, with concerns over the safety of nuclear installations, radioactive waste, and proliferation of nuclear weapon materials. Globally, however, renewed interest in nuclear energy has been sparked by concerns for energy security, economic development, and commitment to reduce CO{sub 2} emissions. Nuclear fission is a major source of energy that is free from CO{sub 2} emissions. It provides 15 % of the world's electricity and 7 % of total primary energy consumption. Around 440 nuclear reactors are currently generating power in 31 countries, with largest capacity in Europe, the USA and Southeast Asia. Non-electricity applications are few at present, but include process heat, hydrogen production, ship propulsion, and desalination. Nuclear power is characterised by high construction costs and a relatively long construction period, but low operating and maintenance expenses, including fuel. Most nuclear power plants in the USA and Europe have second-generation light water reactors (LWRs), while the plants now being built in Southeast Asia are of third-generation design. The Evolutionary Power Reactor (EPR) under construction in Finland, and the Pebble Bed Modular Reactor (PBMR) being developed in South Africa, are both of types referred to as Generation III+. From 2020-30 onwards fourth-generation reactors are expected to provide improved fuel utilisation and economics. Nuclear power does not form part of the Danish energy mix and at present there seems to be little political will to change this position. As a result Denmark has relatively little expertise in nuclear power. However, since nuclear power provides a substantial share of Europe's electricity, Denmark should ensure that it has expertise to advise the government and the public on nuclear issues. (BA)

  11. Analytical Solutions and Optimization of the Exo-Irreversible Schmidt Cycle with Imperfect Regeneration for the 3 Classical Types of Stirling Engine Solutions analytiques et optimisation du cycle de Schmidt irréversible à régénération imparfaite appliquées aux 3 types classiques de moteur Stirling

    Directory of Open Access Journals (Sweden)

    Rochelle P.

    2011-11-01

    Full Text Available The “old” Stirling engine is one of the most promising multi-heat source engines for the future. Simple and realistic basic models are useful to aid in optimizing a preliminary engine configuration. In addition to new proper analytical solutions for regeneration that dramatically reduce computing time, this study of the Schmidt-Stirling engine cycle is carried out from an engineer-friendly viewpoint introducing exo-irreversible heat transfers. The reference parameters are the technological or physical constraints: the maximum pressure, the maximum volume, the extreme wall temperatures and the overall thermal conductance, while the adjustable optimization variables are the volumetric compression ratio, the dead volume ratios, the volume phase-lag, the gas characteristics, the hot-to-cold conductance ratio and the regenerator efficiency. The new normalized analytical expressions for the operating characteristics of the engine: power, work, efficiency, mean pressure, maximum speed of revolution are derived, and some dimensionless and dimensional reference numbers are presented as well as power optimization examples with respect to non-dimensional speed, volume ratio and volume phase-lag angle.analytical solutions. Le “vieux” moteur Stirling est l’un des moteurs a sources multiples d’energie les plus prometteurs pour le futur. Des modeles elementaires simples et realistes sont utiles pour faciliter l’optimisation de configurations preliminaires du moteur. En plus de nouvelles solutions analytiques qui reduisent fortement le temps de calcul, cette etude du cycle moteur de Schmidt-Stirling modifie est entreprise avec le point de vue de l’ingenieur en introduisant les exo-irreversibilites dues aux transferts thermiques. Les parametres de reference sont des contraintes technologiques ou physiques : la pression maximum, le volume maximum, les temperatures de paroi extremes et la conductance totale, alors que les parametres d

  12. Entre Africanité et Afro-Américanité. Divinités « akan » et culte des ancêtres aux États-Unis

    Directory of Open Access Journals (Sweden)

    Pauline Guedj

    2007-07-01

    Full Text Available En 1967, naquit aux États-Unis la première maison de culte « akan » qui, s’inspirant des pratiques d’un sanctuaire de religion dite « traditionnelle » à Larteh Kubease au Ghana, rassemblait en son sein des adeptes afro-américains de ce culte fraîchement importé. En revenant sur l’histoire du mouvement « akan » aux États-Unis, sur ses réalités actuelles et sur les rituels sur lesquels il repose, l’auteur se propose d’analyser la manière dont le culte des ancêtres constitue aujourd’hui pour les fidèles une nouvelle stratégie, leur permettant de mêler leurs propres expériences afro-américaines à une tentative jusqu’auboutiste de retour à l’identité africaine ancestrale et immuable qu’ils espèrent recouvrer.The first « Akan » shrine house based on the practices of the Akonedi Shrine in Larteh Kubease, Ghana, was born in New York in 1967. It assembled many African American practitioners who used « Akan » religion to search for their roots. Analyzing the history of the « Akan » movement in America, dealing with its current reality as well as describing some of its rituals, this paper will study the way in which ancestors worship constitute today a new step in the reafricanization process in North America. Worshipping their African American ancestors along with their African gods, the practitioners of the « Akan » religion have managed to include their own experience in their effort to go back to their ancestral roots.La primera casa-templo « akan » surgió en los Estados Unidos en el año 1967, agrupando adeptos afro-americanos que se inspiraban de las prácticas de un santuario de religión « tradicional » en Larteh Kubease (Ghana. Retomando la historia del movimiento « akan » en Estados Unidos, así como la descripción de sus realidades actuales y de los rituales que lo conforman, la autora propone analizar en que medida el culto a los ancestros constituye hoy en día una nueva

  13. Radiographie par rayons X à haute résolution de défauts topologiques en volume de structures modulées comparée aux neutrons en faisceau blanc

    Science.gov (United States)

    Fernandez Palacio, J.; Hamelin, B.; Marmeggi, J. C.

    2004-11-01

    Une émission de rayons X par un générateur à haute tension (plage : 50 - 410 kV) a été développée pour être utilisée avec un diffractomètre à rayons X durs et caractériser en volume des monocristaux. Le fort flux issu d'une installation de radiologie à foyer fin avec un grand pouvoir de pénétration en profondeur autorise l'étude d'échantillons très absorbants. Quelques exemples de l'utilisation de ces propriétés pour des échantillons épais et très absorbants sont présentés ; principalement l'analyse de contraintes et la topographie X projetée 2D dans des matériaux en comparaison avec l'information par la diffraction des neutrons. La diffraction à haute énergie apparaît dans la direction transmise, les angles de Bragg sont petits et ainsi les différentes lignes de réflexions sont réparties autour du faisceau principal. La presse uni-axiale utilisée pour les expériences est optimisée effectivement avec l'absence d'un bruit de fond dû à l'usage de fentes. L'optique des rayons X durs et neutrons appliquée aux échantillons épais donne une information complémentaire dans les expériences sur l'analyse de la densité volumétrique par la diffusion des rayons X et neutrons. On l'applique à des problèmes concernant des cristaux aux structures modulées étudiées sous des charges mécaniques et thermiques.

  14. Des « mouvements pacifistes » aux « mouvements anti-occupation » israéliens

    Directory of Open Access Journals (Sweden)

    Karine Lamarche

    2008-08-01

    que le produit d’un rapport de force sur le terrain de plus en plus difficile avec les représentants de l’ordre, contribuant à rendre les répertoires d’actions d’autant plus transgressifs.Cet article présentera divers groupes et organisations qui ont contribué à écrire l’histoire du mouvement pacifiste israélien, de manière non-exhaustive et suivant un développement chronologique. La première partie sera consacrée aux années succédant la conquête des territoires palestiniens, caractérisées par des mobilisations pacifistes à caractère sécuritaire (« le Mouvement pour la paix et la sécurité », Oz Ve’Shalom, « la Paix Maintenant », etc. mais aussi par la première initiative de protestation israélo-palestinienne conjointe (le « Comité de solidarité avec l’Université Bir Zeit ». Dans un second temps, nous examinerons la période des années 80 marquée par la guerre du Liban puis par la première Intifada, et qui vit l’émergence d’un mouvement pacifiste de masse. Celui-ci se caractérisa notamment par l’apparition de nombreuses organisations créées dans le but de défendre les droits de l’homme (HaMoked, les « Rabbins pour les droits de l’homme », ICAHD, B’Tselem, etc., mais aussi de groupes dénonçant, de manière plus ou moins subversive, l’occupation et ses conséquences sur la société israélienne (Daï La’Kibush, The 21st Year, les « Femmes en Noir », etc.. Oslo constitue évidemment un moment charnière pour le camp de la paix israélien puisque le projet pour lequel celui-ci s’était mobilisé sembla sur le point d’aboutir pour finalement échouer radicalement. Suite à l’espoir suscité par les négociations entre le gouvernement israélien et l’OLP, la dégradation très rapide de la situation sur le terrain (assassinat d’Yitzhak Rabin, massacre commis par Baruch Goldstein à Hébron, intensification de la colonisation, bouclages répétés en Cisjordanie, reprise des

  15. Development potential of wind energy in Turkey

    Directory of Open Access Journals (Sweden)

    İsmet Akova

    2011-07-01

    Full Text Available L’énergie en Turquie est aujourd’hui fournie par l’énergie fossile. De plus, la Turquie est dépendante de l’extérieur en matière d’énergie pour son économie et les secteurs divers qui en ont besoin. En Turquie, parallèlement aux informations ci-dessus, 83% de l’électricité de l’an 2008 provient des sources d’énergie fossile. Les perspectives d'avenir prévoient que la demande d’énergie de la Turquie augmentera et l’effet naturel de cette croissance sera l’augmentation du taux de dépendance énergétique à l'égard des autres pays. Les travaux effectués démontrent que, parmi les sources d’énergies renouvelables de la Turquie, le pouvoir hydraulique et le potentiel d’énergie éolienne sont les plus importants et que chacune de ces deux sources ont des potentiels techniques pour la production de l’électricité. La multiplication des centrales éoliennes au cours de ces dernières années est à relier à des facteurs comme la préparation de l’Atlas d’Energie Eolienne Turc, la disposition des lois afin d’aider les entrepreneurs du secteur privé et l’augmentation des prix du pétrole. Les centrales éoliennes fonctionneront dans la région de Marmara, la région d’Egée et dans la partie de méditerranée orientale de la Turquie où se manifestent plus souvent les vents violents. Il est probable que quelques autres centrales seront construites dans d'autres régions que celles citées précédemment.Covering its energy requirement from fossil energy sources for the most part, Turkey relies on outside sources to procure energy required for its economy and different sectors. Similarly, Turkey had produced 83 pct of the overall electricity in 2008 out of fossil energy sources. Future projectors indicate that the energy requirement of our country would augment and foreign-dependency in energy would thus increase accordingly.  The on-going studies state that especially hydraulic power and wind

  16. Introduction to analytical techniques of beam-target interactions and resolutions; Introduction aux techniques d`analyse interactions rayonnement-matiere et resolutions

    Energy Technology Data Exchange (ETDEWEB)

    Ruste, J.

    1995-08-01

    For several years, new analysis and observation techniques have been developed, which have considerably improved material research. Almost all these techniques are based on the interaction of a beam of `primary particles` (electrons, photons, ions, particles, etc) with target. Correct and appropriate use of these techniques requires a good knowledge of these interactions and their consequences (emissions of `secondary particles`, modifications of the primary beam and target, etc). The first part of this report deals with the radiation/material interactions according to the nature of the radiation and its energy. The nature and consequences of the interaction of an electromagnetic wave, a beam of electrons, ions and neutrons are examined over an extended range of energy from MeV to MeV. Certain notions such as the analysis area, spatial resolutions or limits of detection can also be defined. In the second part, some of the most important and widespread techniques of analysis and observation are compared in terms of properties and performance. In particular, there is a brief principle of the technique, nature of the data obtained, spatial resolution, and the limits of detection with today`s methods permit. (author). 5 refs., 23 figs., 9 tabs.

  17. Report by the AERES on the unit: Fuel Study Department (DEC) under the supervision of the establishments and bodies: Atomic Energy and Alternative Energies Commission (CEA); Rapport de l'AERES sur l'unite: Departement d'Etudes des Combustibles (DEC) sous tutelle des etablissements et organismes: Commissariat a l'Energie Atomique et aux Energies Alternatives (CEA)

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2011-03-15

    This report is a kind of audit report on a research laboratory, the DEC (Departement d'Etudes des Combustibles, Fuel Study Department) which comprises four departments: a department of analysis and characterization of fuel behaviour (SA3C) which comprises four laboratories, a Plutonium, Uranium and Minor Actinides department (SPUA) which comprises four laboratories, a department for the investigation and simulation of fuel behaviour (four laboratories) and the Leca-Star department (3 laboratories and a project group). The authors discuss an assessment of the whole unit activities in terms of strengths and opportunities, aspects to be improved, risks and recommendations, productions and publications on different themes (fundamental research on fuels, fuel design, fabrications, characterizations and property measurements, experimental irradiations, characterization of irradiated fuels and chemical and radio-chemical analysis, modelling and simulation). A more detailed assessment is presented for each theme in terms of scientific quality, influence and attractiveness (awards, recruitment capacity, capacity to obtain financing and to tender, participation to international programs), strategy and governance, and project

  18. DET/MPS - THE GSFC ENERGY BALANCE PROGRAM, DIRECT ENERGY TRANSFER/MULTIMISSION SPACECRAFT MODULAR POWER SYSTEM (UNIX VERSION)

    Science.gov (United States)

    Jagielski, J. M.

    1994-01-01

    The DET/MPS programs model and simulate the Direct Energy Transfer and Multimission Spacecraft Modular Power System in order to aid both in design and in analysis of orbital energy balance. Typically, the DET power system has the solar array directly to the spacecraft bus, and the central building block of MPS is the Standard Power Regulator Unit. DET/MPS allows a minute-by-minute simulation of the power system's performance as it responds to various orbital parameters, focusing its output on solar array output and battery characteristics. While this package is limited in terms of orbital mechanics, it is sufficient to calculate eclipse and solar array data for circular or non-circular orbits. DET/MPS can be adjusted to run one or sequential orbits up to about one week, simulated time. These programs have been used on a variety of Goddard Space Flight Center spacecraft projects. DET/MPS is written in FORTRAN 77 with some VAX-type extensions. Any FORTRAN 77 compiler that includes VAX extensions should be able to compile and run the program with little or no modifications. The compiler must at least support free-form (or tab-delineated) source format and 'do do-while end-do' control structures. DET/MPS is available for three platforms: GSC-13374, for DEC VAX series computers running VMS, is available in DEC VAX Backup format on a 9-track 1600 BPI tape (standard distribution) or TK50 tape cartridge; GSC-13443, for UNIX-based computers, is available on a .25 inch streaming magnetic tape cartridge in UNIX tar format; and GSC-13444, for Macintosh computers running AU/X with either the NKR FORTRAN or AbSoft MacFORTRAN II compilers, is available on a 3.5 inch 800K Macintosh format diskette. Source code and test data are supplied. The UNIX version of DET requires 90K of main memory for execution. DET/MPS was developed in 1990. A/UX and Macintosh are registered trademarks of Apple Computer, Inc. VMS, DEC VAX and TK50 are trademarks of Digital Equipment Corporation. UNIX is a

  19. Photoelectron imaging, probe of the dynamics: from atoms... to clusters; Imagerie de photoelectrons, sonde de la dynamique: des atomes... aux agregats

    Energy Technology Data Exchange (ETDEWEB)

    Lepine, F

    2003-06-15

    This thesis concerns the study of the deexcitation of clusters and atoms by photoelectron imaging. The first part is dedicated to thermionic emission of a finite size system. A 3-dimensional imaging setup allows us to measure the time evolution of the kinetic energy spectrum of electrons emitted from different clusters (W{sub n}{sup -}, C{sub n}{sup -}, C{sub 60}). Then we have a direct access to the fundamental quantities which characterize this statistical emission: the temperature of the finite heat bath and the decay rate. The second part concerns the ionization of atomic Rydberg states placed in a static electric field. We performed the first experiment of photoionization microscopy which allows us to obtain a picture which is the macroscopic projection of the electronic wave function. Then we have access to the detail of the photoionization and particularly to the quantum properties of the electron usually confined at the atomic scale. (author)

  20. Contributions to safety studies for new concepts of nuclear reactors; Contributions aux etudes de surete pour des filieres innovantes de reacteurs nucleaires

    Energy Technology Data Exchange (ETDEWEB)

    Perdu, F

    2003-12-01

    The complete study of molten salt reactors, designed for a massive and durable nuclear energy production, must include neutronics, hydraulics and thermal effects. This coupled study, using the MCNP and Trio{sub U} codes, is undertaken in the case of the MSRE (molten salt reactor experiment) prototype. The obtained results fit very well the experiment. Their extrapolation suggests ways of improving the safety coefficients of power molten salt reactors. A second part is devoted to accelerator driven subcritical reactors, developed to incinerate radioactive waste.We propose a method to measure the prompt reactivity from the decay following a neutron pulse. It relies only on the distribution of times between generations, which is a characteristic of the reactor. This method is implemented on the results of the MUSE 4 experiment, and the obtained reactivity is accurate within 5%. (author)

  1. Thermal room modelling adapted to the test of HVAC control systems; Modele de zone adapte aux essais de regulateurs de systemes de chauffage et de climatisation

    Energy Technology Data Exchange (ETDEWEB)

    Riederer, P.

    2002-01-15

    Room models, currently used for controller tests, assume the room air to be perfectly mixed. A new room model is developed, assuming non-homogeneous room conditions and distinguishing between different sensor positions. From measurement in real test rooms and detailed CFD simulations, a list of convective phenomena is obtained that has to be considered in the development of a model for a room equipped with different HVAC systems. The zonal modelling approach that divides the room air into several sub-volumes is chosen, since it is able to represent the important convective phenomena imposed on the HVAC system. The convective room model is divided into two parts: a zonal model, representing the air at the occupant zone and a second model, providing the conditions at typical sensor positions. Using this approach, the comfort conditions at the occupant zone can be evaluated as well as the impact of different sensor positions. The model is validated for a test room equipped with different HVAC systems. Sensitivity analysis is carried out on the main parameters of the model. Performance assessment and energy consumption are then compared for different sensor positions in a room equipped with different HVAC systems. The results are also compared with those obtained when a well-mixed model is used. A main conclusion of these tests is, that the differences obtained, when changing the position of the controller's sensor, is a function of the HVAC system and controller type. The differences are generally small in terms of thermal comfort but significant in terms of overall energy consumption. For different HVAC systems the cases are listed, in which the use of a simplified model is not recommended. (author)

  2. Development of Single-Event Upset hardened programmable logic devices in deep submicron CMOS; Developpement de circuits logiques programmables resistants aux aleas logiques en technologie CMOS submicrometrique

    Energy Technology Data Exchange (ETDEWEB)

    Bonacini, S

    2007-11-15

    The electronics associated to the particle detectors of the Large Hadron Collider (LHC), under construction at CERN, will operate in a very harsh radiation environment. Commercial Off-The-Shelf (COTS) components cannot be used in the vicinity of particle collision due to their poor radiation tolerance. This thesis is a contribution to the effort to cover the need for radiation-tolerant SEU-robust (Single Event Upset) programmable components for application in high energy physics experiments. Two components are under development: a Programmable Logic Device (PLD) and a Field-Programmable Gate Array (FPGA). The PLD is a fuse-based, 10-input, 8-I/O general architecture device in 0.25 {mu}m CMOS technology. The FPGA under development is a 32*32 logic block array, equivalent to {approx} 25 k gates, in 0.13 {mu}m CMOS. The irradiation test results obtained in the CMOS 0.25 {mu}m technology demonstrate good robustness of the circuit up to an LET (Linear Energy Transfer) of 79.6 cm{sup 2}*MeV/mg, which make it suitable for the target environment. The CMOS 0.13 {mu}m circuit has showed robustness to an LET of 37.4 cm{sup 2}*MeV/mg in the static test mode and has increased sensitivity in the dynamic test mode. This work focused also on the research for an SEU-robust register in both the mentioned technologies. The SEU-robust register is employed as a user data flip-flop in the FPGA and PLD designs and as a configuration cell as well in the FPGA design.

  3. Annual Energy Review, 2008

    Energy Technology Data Exchange (ETDEWEB)

    None

    2009-06-01

    The Annual Energy Review (AER) is the Energy Information Administration's (EIA) primary report of annual historical energy statistics. For many series, data begin with the year 1949. Included are statistics on total energy production, consumption, trade, and energy prices; overviews of petroleum, natural gas, coal, electricity, nuclear energy, renewable energy, and international energy; financial and environment indicators; and data unit conversions.

  4. "Quelque part {u00E1 un tournant du destin..." ; "Ciel vide, bőte aux lettres vide, chemin vide..." ; "Singe indécis..." ; Ithaque / Tõnu Õnnepalu ; trad. par Antoine Chalvin avec le concours de l'auteur

    Index Scriptorium Estoniae

    Õnnepalu, Tõnu

    1992-01-01

    Orig.: "Kusagil saatuse käänakul..." ; "Tühi taevas, tühi postkast, tühi kruusatee..." ; "Otsustusvõimetu ahv..." ; Ithaka. Sisu: "Quelque part {u00E1 un tournant du destin..." ; "Ciel vide, bőte aux lettres vide, chemin vide..." ; "Singe indécis..." ; Ithaque. T. Õnnepalust lk. 93. Kadriann Soosaare illustratsioon lk. 97

  5. Absolute NMR shielding scales and nuclear spin-rotation constants in (175)LuX and (197)AuX (X = (19)F, (35)Cl, (79)Br and (127)I).

    Science.gov (United States)

    Demissie, Taye B; Jaszuński, Michał; Komorovsky, Stanislav; Repisky, Michal; Ruud, Kenneth

    2015-10-28

    We present nuclear spin-rotation constants, absolute nuclear magnetic resonance (NMR) shielding constants, and shielding spans of all the nuclei in (175)LuX and (197)AuX (X = (19)F, (35)Cl, (79)Br, (127)I), calculated using coupled-cluster singles-and-doubles with a perturbative triples (CCSD(T)) correction theory, four-component relativistic density functional theory (relativistic DFT), and non-relativistic DFT. The total nuclear spin-rotation constants determined by adding the relativistic corrections obtained from DFT calculations to the CCSD(T) values are in general in agreement with available experimental data, indicating that the computational approach followed in this study allows us to predict reliable results for the unknown spin-rotation constants in these molecules. The total NMR absolute shielding constants are determined for all the nuclei following the same approach as that applied for the nuclear spin-rotation constants. In most of the molecules, relativistic effects significantly change the computed shielding constants, demonstrating that straightforward application of the non-relativistic formula relating the electronic contribution to the nuclear spin-rotation constants and the paramagnetic contribution to the shielding constants does not yield correct results. We also analyze the origin of the unusually large absolute shielding constant and its relativistic correction of gold in AuF compared to the other gold monohalides.

  6. Absolute NMR shielding scales and nuclear spin–rotation constants in {sup 175}LuX and {sup 197}AuX (X = {sup 19}F, {sup 35}Cl, {sup 79}Br and {sup 127}I)

    Energy Technology Data Exchange (ETDEWEB)

    Demissie, Taye B., E-mail: taye.b.demissie@uit.no; Komorovsky, Stanislav; Repisky, Michal; Ruud, Kenneth [Centre for Theoretical and Computational Chemistry, Department of Chemistry, UiT The Arctic University of Norway, N-9037 Tromsø (Norway); Jaszuński, Michał [Institute of Organic Chemistry, Polish Academy of Sciences, Kasprzaka 44, 01 224 Warszawa (Poland)

    2015-10-28

    We present nuclear spin–rotation constants, absolute nuclear magnetic resonance (NMR) shielding constants, and shielding spans of all the nuclei in {sup 175}LuX and {sup 197}AuX (X = {sup 19}F, {sup 35}Cl, {sup 79}Br, {sup 127}I), calculated using coupled-cluster singles-and-doubles with a perturbative triples (CCSD(T)) correction theory, four-component relativistic density functional theory (relativistic DFT), and non-relativistic DFT. The total nuclear spin–rotation constants determined by adding the relativistic corrections obtained from DFT calculations to the CCSD(T) values are in general in agreement with available experimental data, indicating that the computational approach followed in this study allows us to predict reliable results for the unknown spin–rotation constants in these molecules. The total NMR absolute shielding constants are determined for all the nuclei following the same approach as that applied for the nuclear spin–rotation constants. In most of the molecules, relativistic effects significantly change the computed shielding constants, demonstrating that straightforward application of the non-relativistic formula relating the electronic contribution to the nuclear spin–rotation constants and the paramagnetic contribution to the shielding constants does not yield correct results. We also analyze the origin of the unusually large absolute shielding constant and its relativistic correction of gold in AuF compared to the other gold monohalides.

  7. Absolute NMR shielding scales and nuclear spin-rotation constants in 175LuX and 197AuX (X = 19F, 35Cl, 79Br and 127I)

    Science.gov (United States)

    Demissie, Taye B.; Jaszuński, Michał; Komorovsky, Stanislav; Repisky, Michal; Ruud, Kenneth

    2015-10-01

    We present nuclear spin-rotation constants, absolute nuclear magnetic resonance (NMR) shielding constants, and shielding spans of all the nuclei in 175LuX and 197AuX (X = 19F, 35Cl, 79Br, 127I), calculated using coupled-cluster singles-and-doubles with a perturbative triples (CCSD(T)) correction theory, four-component relativistic density functional theory (relativistic DFT), and non-relativistic DFT. The total nuclear spin-rotation constants determined by adding the relativistic corrections obtained from DFT calculations to the CCSD(T) values are in general in agreement with available experimental data, indicating that the computational approach followed in this study allows us to predict reliable results for the unknown spin-rotation constants in these molecules. The total NMR absolute shielding constants are determined for all the nuclei following the same approach as that applied for the nuclear spin-rotation constants. In most of the molecules, relativistic effects significantly change the computed shielding constants, demonstrating that straightforward application of the non-relativistic formula relating the electronic contribution to the nuclear spin-rotation constants and the paramagnetic contribution to the shielding constants does not yield correct results. We also analyze the origin of the unusually large absolute shielding constant and its relativistic correction of gold in AuF compared to the other gold monohalides.

  8. Genre et stéréotypage médiatique: du procès des médias aux processus psycho-sociaux de facilitation ou de réactance

    Directory of Open Access Journals (Sweden)

    Claude Chabrol

    2016-12-01

    Full Text Available Les discours sociaux publiquement produits dans les sociétés occidentales contemporaines mettent en oeuvre des opérations de stéréotypages qui évoquent des représentations bien connues et parfois opposées, conformes ou non aux catégorisations psycho-sociales profondes. Leurs fonctions premières ne semblent pas être de renforcer les catégorisations de genre les plus traditionnelles ou de promouvoir leurs avatars modernes opposés, mais bien plutôt de les rendre compatibles entre elles, au risque de les vider de leurs significations premières au profit d’un Imaginaire social qui les concilierait toutes à la façon dont les mythes tentaient eux aussi pour Levi Strauss d’opérer une conciliation et un dépassement de représentations sociales contraires dans les sociétés antérieures. Ces discours suscitent aussi des phénomènes importants de résistance dits de “reactance”. Des psychologues proposent aussi de renforcer la résistance à cette persuasion qu’ils ont d’ailleurs souvent étudiée de près.

  9. Potentialités et intérêts de l'élevage larvaire de la crevette d'eau douce indigène Macrobrachium carcinus (L. (Palaemonidae aux Antilles françaises

    Directory of Open Access Journals (Sweden)

    HERMAN F.

    1999-01-01

    Full Text Available De précédents travaux, réalisés en laboratoire, ont montré que le développement larvaire de Macrobrachium carcinus nécessitait un environnement salin. Le nombre de larves mises en élevage lors de ces essais était cependant trop faible pour envisager une production de masse de l'espèce. Lors de l'expérience ici présentée, 46.900 larves au stade I ont été mises en élevage à une température oscillant entre 28 et 30°C. Il a été montré qu'en faisant varier la salinité, la production de masse de post-larves était possible en 45 jours, avec un taux de survie finale de 14,3 % et un taux de métamorphose de 10,6 %. Ces résultats sont nettement inférieurs à ceux obtenus en routine avec l'espèce indonésienne Macrobrachium rosenbergii, mais attestent des possibilités d'élevage de M. carcinus aux Antilles françaises et ailleurs.

  10. Residential Energy Management Education.

    Science.gov (United States)

    Mecca, Stephen J.; Robertshaw, Joseph E.

    1980-01-01

    Describes two formal programs in the area of energy management education: a Residential Energy Management Summer Institute (part of a faculty development program funded by the Department of Energy), and a Residential Energy Management curriculum for Energy Auditors. (CS)

  11. Saqayti: For greater rationalization of tapstand water supplies Une meilleure rationalisation de la distribution d’eau grâce aux Saqaytis Saqayti para racionalizar la utilización de los puntos de abastecimiento de agua

    Directory of Open Access Journals (Sweden)

    T. Hascoet

    2011-04-01

    foyers, en particulier dans les zones urbaines et péri-urbaines, ne peuvent actuellement toujours pas bénéficier d’un raccordement individuel au réseau d’eau potable pour des raisons structurelles et/ou financières. Afin de leur garantir toutefois un accès à ce service essentiel, les autorités locales ont mis en place des points d’eau communaux collectifs -les bornes fontaines- où L’eau, financée par les communes, est desservie gratuitement et sans restriction d’accès. Mais si ces bornes fontaines constituent une solution à court terme, elles ne permettent ni d’assurer une gestion rationnelle de la ressource, ni de la partager équitablement. En effet, cet accès libre et gratuit entraîne surconsommations, gaspillages et utilisation de l’eau par des consommateurs qui n’étaient pas initialement ciblés par cette aide. Ceci a engendre de fait des charges élevées pour les municipalités concernées, qui menacent la durabilité du service dans son ensemble. Partant de ce constat, et conformément aux recommandations de la communauté internationale et de la société civile, un nouveau type de point d’eau, la borne fontaine « Saqayti », a été développé pour distribuer de l’eau prépayée à des usagers dans les villes de Rabat, Tanger et Tétouan. L’accès y est contingenté aux seuls porteurs d’une clé à puce électronique, préalablement choisis au cas par cas par l'autorité municipale. Ce système permet ainsi de limiter la distribution de l’eau aux seules populations visées qui peuvent accéder librement au point d’eau jusqu’à un seuil mensuel, prépayé par les communes, équivalent à leurs besoins essentiels. Cet article se propose de montrer que Saqayti se conçoit comme une solution de complément innovante au raccordement individuel au réseau, assurant aux populations les plus pauvres un accès au service d’eau et d’assainissement, répondant  aux standards de qualité internationaux, tout en

  12. Calculation system for physical analysis of boiling water reactors; Modelisation des phenomenes physiques specifiques aux reacteurs a eau bouillante, notamment le couplage neutronique-thermohydraulique

    Energy Technology Data Exchange (ETDEWEB)

    Bouveret, F

    2001-07-01

    Although Boiling Water Reactors generate a quarter of worldwide nuclear electricity, they have been only little studied in France. A certain interest now shows up for these reactors. So, the aim of the work presented here is to contribute to determine a core calculation methodology with CEA (Commissariat a l'Energie Atomique) codes. Vapour production in the reactor core involves great differences in technological options from pressurised water reactor. We analyse main physical phenomena for BWR and offer solutions taking them into account. BWR fuel assembly heterogeneity causes steep thermal flux gradients. The two dimensional collision probability method with exact boundary conditions makes possible to calculate accurately the flux in BWR fuel assemblies using the APOLLO-2 lattice code but induces a very long calculation time. So, we determine a new methodology based on a two-level flux calculation. Void fraction variations in assemblies involve big spectrum changes that we have to consider in core calculation. We suggest to use a void history parameter to generate cross-sections libraries for core calculation. The core calculation code has also to calculate the depletion of main isotopes concentrations. A core calculation associating neutronics and thermal-hydraulic codes lays stress on points we still have to study out. The most important of them is to take into account the control blade in the different calculation stages. (author)

  13. Non-linear vibrations of cracked structures: application to turbine rotors; Vibrations non-lineaires des structures fissurees: application aux rotors de turbines

    Energy Technology Data Exchange (ETDEWEB)

    El Arem, S.

    2006-01-15

    The aim of this work is to study the dynamic response of a cracked rotor to establish some possibilities for early on line crack detection. First, a review on experimental, numerical and analytical works on the dynamics of cracked rotors is given. Then, an original method of calculating the behavior of a cracked beam section in bending with shearing effects is presented. The nonlinear behavior relations are derived from a three-dimensional model taking into account the unilateral contact conditions on the crack's lips. Based on an energy formulation, this method could be applied to any geometry of crack. The exploration by different numerical integration methods of the vibratory response of some models of cracked rotors is presented in the third chapter of this thesis. The un-cracked parts of a rotor are represented by elements of bar or beam type, and the cracked section by a nonlinear spring taking into account the breathing mechanism of the cracks. At the end of this part, an original method of construction of a finite element of a cracked beam is presented. The final chapter is devoted to the analytical study of the system with 2 degrees of freedom. The breathing mechanism of the crack is taken into account by considering specific periodic variation of the global stiffness of the system. The differential equations system is solved using the harmonic balance method. The linear stability of the periodic solutions is studied by the Floquet theory. Some vibratory parameters are proposed as crack indicators. (author)

  14. Contribution to the optimization of the coupling of nuclear reactors to desalination processes; Contribution a l'optimisation du couplage des reacteurs nucleaires aux procedes de dessalement

    Energy Technology Data Exchange (ETDEWEB)

    Dardour, S

    2007-04-15

    This work deals with modelling, simulation and optimization of the coupling between nuclear reactors (PWR, modular high temperature reactors) and desalination processes (multiple effect distillation, reverse osmosis). The reactors considered in this study are PWR (Pressurized Water Reactor) and GTMHR (Gas Turbine Modular Helium Reactor). The desalination processes retained are MED (Multi Effect Distillation) and SWRO (Sea Water Reverse Osmosis). A software tool: EXCELEES of thermodynamic modelling of coupled systems, based on the Engineering Algebraic Equation Solver has been developed. Models of energy conversion systems and of membrane desalination processes and distillation have been developed. Based on the first and second principles of thermodynamics, these models have allowed to determine the optimal running point of the coupled systems. The thermodynamic analysis has been completed by a first economic evaluation. Based on the use of the DEEP software of the IAEA, this evaluation has confirmed the interest to use these types of reactors for desalination. A modelling tool of thermal processes of desalination in dynamic condition has been developed too. This tool has been applied to the study of the dynamics of an existing plant and has given satisfying results. A first safety checking has been at last carried out. The transients able to jeopardize the integrated system have been identified. Several measures aiming at consolidate the safety have been proposed. (O.M.)

  15. Microscopic approach of molecular dynamics. Applications to reactions near the barrier; Approches microscopiques de la dynamique nucleaire. Applications aux reactions autour de la barriere

    Energy Technology Data Exchange (ETDEWEB)

    Simenel, C.; Avez, B. [CEA Saclay, Dept. d' Astrophysique, de Physique des Particules de Physique Nucleaire et de l' Instrumentation Associee (DSM/DAPNIA/SPhN), 91- Gif sur Yvette (France); Lacroix, D. [GANIL, 14 - Caen (France)

    2007-07-01

    This lecture introduces several microscopic approaches to nuclear dynamics. Our goal is to provide a good description of low energy heavy ions collisions. We study both the formalism and the practical application of the time-dependent Hartree-Fock (TDHF) theory. The TDHF approach gives a mean field dynamics of the system under the assumption of independent particles. As an example, we study the fusion of both spherical and deformed nuclei with TDHF. We also show that nucleon transfer may occur between nuclei below the barrier. These studies allow us to specify the field of applications of TDHF in one hand, and, in the other hand, its intrinsic limitations, as for instance the fact that there is no fusion by tunnel effect with TDHF. It is then important to get rid of the independent particle assumption. We finally present some approaches to go beyond TDHF, including for instance pairing and/or collision term between nucleons, though only few realistic applications have been performed so far. (authors)

  16. VT Renewable Energy Sites - Renewable Energy Professionals

    Data.gov (United States)

    Vermont Center for Geographic Information — (Link to Metadata) The Renewable Energy Atlas of Vermont and this dataset were created to assist town energy committees, the Clean Energy Development Fund and other...

  17. The renewable energies; Les energies renouvelables

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2004-07-01

    The renewable energies are everywhere but also irregular. Thus they need savings in our energy consumptions. This document provides information, such as economics, capacity and implementation, on the following renewable energies: the wind power, the solar energy, the photovoltaic energy, the biogas, the geothermal energy, the hydroelectricity, the wood. It also presents a state of the art and examples of bio-climatic architecture. (A.L.B.)

  18. Waste energy harvesting mechanical and thermal energies

    CERN Document Server

    Ling Bing, Kong; Hng, Huey Hoon; Boey, Freddy; Zhang, Tianshu

    2014-01-01

    Waste Energy Harvesting overviews the latest progress in waste energy harvesting technologies, with specific focusing on waste thermal mechanical energies. Thermal energy harvesting technologies include thermoelectric effect, storage through phase change materials and pyroelectric effect. Waste mechanical energy harvesting technologies include piezoelectric (ferroelectric) effect with ferroelectric materials and nanogenerators. The book aims to strengthen the syllabus in energy, materials and physics and is well suitable for students and professionals in the fields.

  19. Energy awareness luncheon and energy seminar

    Energy Technology Data Exchange (ETDEWEB)

    None

    1980-07-23

    A separate abstract was prepared for each of the following: the luncheon address, energy-growth-freedom by Kenneth A. Randall; the keynote commentary, by F.S. Patton, program chairman; and four current-awareness papers on the future of oil and gas, coal, nuclear energy, and solar energy. In addition, in a section, Speaking of Energy, very brief statements by eight professional engineers on the energy challenge are included. Also, the NSPE position paper on energy policy is included.

  20. Energy Trends 2012; Energie Trends 2012

    Energy Technology Data Exchange (ETDEWEB)

    Van Dril, T. (ed.); Gerdes, J. (ed.) [ECN Beleidsstudies, Petten (Netherlands); Marbus, S. (ed.) [Energie-Nederland, Den Haag (Netherlands); Boelhouwer, M. (ed.) [Netbeheer Nederland, Arnhem (Netherlands)

    2012-11-15

    In Energy Trends 2012, all figures and developments in the field of energy in the Netherlands are presented in conjunction. The book provides information on energy use by consumers and businesses, provides insight into the international energy trade, energy production and development of energy networks [Dutch] In Energie Trends 2012 staan alle cijfers en ontwikkelingen op het gebied van energie in Nederland in samenhang gepresenteerd. Het boek biedt informatie over energiegebruik door consumenten en bedrijven, geeft inzage in de internationale energiehandel en energieproductie en biedt inzicht in de ontwikkeling van de energienetten.

  1. Energy efficiency, renewable energy and sustainable development

    Energy Technology Data Exchange (ETDEWEB)

    Ervin, C.A.

    1994-12-31

    The Office of Energy Efficiency and Renewable Energy (EE) is part of the U.S. Department of Energy that is specifically charged with encouraging the more efficient use of energy resources, and the use of renewable energy resources - such as solar power, wind power, biomass energy and geothermal energy. In the past several years, EE has increased its emphasis on technology deployment through partnerships with states, local governments and private companies. Partnerships move new discoveries more quickly into the marketplace, where they can create jobs, prevent pollution, save resources, and produce many other benefits. The author then emphasizes the importance of this effort in a number of different sections of the paper: energy consumption pervades everything we do; U.S. energy imports are rising to record levels; transportation energy demand is increasing; U.S. energy use is increasing; population growth increases world energy demand; total costs of energy consumption aren`t always counted; world energy markets offer incredible potential; cost of renewables is decreasing; clean energy is essential to sustainable development; sustainable energy policy; sustainable energy initiatives: utilities, buildings, and transportation.

  2. EFFICACITÉ DES REPEUPLEMENTS EN TRUITES (Salmo trutta L. et Oncorhynchus mykiss W. DE UN AN POUR LA PÊCHE PROFESSIONNELLE AUX FILETS ET LA PÊCHE AMATEUR À LA TRAÎNE DANS LE LAC DU BOURGET

    Directory of Open Access Journals (Sweden)

    CHAMPIGNEULLE A.

    2003-01-01

    Full Text Available L’étude visait à évaluer l’efficacité d’une pratique de repeuplement courante dans le lac du Bourget (4 400 ha consistant à déverser directement en lac des truitelles de un an avec pour objectif de soutenir des captures de truite du lac. Les recaptures par la pêche amateur et professionnelle ont été évaluées pour un lot de 15 900 truites fario (Salmo trutta L. domestiques de un an (longueur totale moyenne de 177 mm déversées fin avril 1988. Elles sont respectivement de 3,8 % (33 kg/1 000 truitelles pour la pêche professionnelle aux filets maillants et de 1,0 % (6 kg/1 000 truitelles pour la pêche amateur à la traîne en bateau. En relation avec une forte croissance, l’essentiel des recaptures a été réalisé en fin de saison 1988 et en début de saison 1989. Les recaptures par la pêche professionnelle aux filets maillants ont été évaluées pour un lot de 10 000 truitelles fario domestiques (longueur totale moyenne de 179 mm en comparaison avec un lot de 10 800 truitelles arc en ciel (Oncorhynchus mykiss W. de un an (longueur totale moyenne de 219 mm déversées en mai 1990. Les recaptures ont été respectivement de 3,2 % (20 kg/1 000 truitelles pour la fario et de 7,0 % (42 kg/1 000 truitelles pour l’arc en ciel. Pour la truite arc-en-ciel, l’essentiel des recaptures a été réalisé très rapidement sur une période brève : milieu et fin de saison 1990. Pour le lot de fario, l’essentiel de l’exploitation a été réalisé sur une période courte mais un peu plus tardive (fin de saison 1990 et début de saison 1991 que pour l’arc-en-ciel. Les repeuplements en mai avec des truitelles domestiques de un an conduisent effectivement à des captures de truite de lac en lac mais avec un rendement plutôt faible et en prenant des risques (écologiques et pathologiques. Ceci suggère de mobiliser les efforts de gestion vers la production naturelle et donc durable de la ressource truite de lac dans le lac du

  3. L’accès du plus grand nombre aux services essentiels ne se fera pas sans une implication du secteur privé et sans une tarification adéquate de ces services

    Directory of Open Access Journals (Sweden)

    Luc Rigouzzo

    2012-01-01

    Full Text Available La couverture, via le secteur privé, des besoins en services de base (eau, énergie, services financiers, logement,.. des populations des pays en développement est une nécessité si l’on veut essayer de faire reculer la pauvreté.  Toutefois les financements privés « classiques » ne s’orientent pas spontanément vers ces secteurs notamment en raison du refus de faire  « payer » un service essentiel à des populations pauvres, sujet qui a fait souvent l’objet de campagnes de rejets de la part d’acteurs de la société civile. De très nombreux exemples montrent pourtant que, compte tenu de l’impact de ces services sur leur qualité de vie, les consommateurs  de ces pays, notamment du « bas de la pyramide » sont disposés à les payer pourvus qu’ils aient accès à un service de qualité. Dans ces secteurs, le coût nominal du service  importe beaucoup moins que son coût d’opportunité et l’impact qu’aura ce service sur la vie des bénéficiaires.  Bien souvent ce service peut même être  payé ex ante ce qui peut permettre aux familles de mieux contrôler les dépenses qu’elles peuvent y consacrer. Il faut toutefois distinguer la fourniture de services essentiels de celles de bien de consommation courante et bien entendu éviter les dérives. En tout état de cause la possibilité de construire des modèles équilibrés financièrement conditionne  la mobilisation de financement en quantité suffisante de la part des  acteurs financiers locaux et internationaux. Dans ce domaine comme dans d’autres, la voie est donc probablement la voie du juste milieu,  en évitant les excès d’une sur-tarification, mais en acceptant de conserver des modèles économiques rentables. Ceux-ci doivent  permettre aux investisseurs d’avoir des résultats qui les conduisent à accroitre et poursuivre leurs investissements, et  d’augmenter le plus rapidement possible le nombre de bénéficiaires. Prétendre construire

  4. Rôle de la dispersion dans la réponse des populations de truites aux habitats formés par les grands débris ligneux dans les ruisseaux de montagne du Colorado

    Directory of Open Access Journals (Sweden)

    FAUSCH K. D.

    1995-04-01

    Full Text Available Un peu partout dans le monde, les aménagistes des pêches utilisent souvent des rondins pour réaliser des mouilles pour les salmonidés, souvent pour compenser l'absence de grands débris ligneux (LWD due à la déforestation ou à d'autres perturbations des forêts alluviales. Des mesures des LWD réalisées sur 11 ruisseaux de montagne du Colorado drainant de vieilles forêts de résineux (Picea - Abies montrent qu'ils sont à l'origine de la plupart des mouilles. Les morceaux qui contribuent à la formation des mouilles sont, en moyenne, plus grands que ceux qui n'en forment pas. La plupart enjambe le chenal perpendiculairement à l'écoulement et forme des mouilles de chute («plunge pool» et des mouilles de retenue («dammed pool». Les aménagistes des pêches qui utilisent des troncs perpendiculaires à l'écoulement pour réaliser des mouilles considèrent généralement que cette addition d'habitat améliore la survie des salmonidés résidents pendant les périodes critiques comme l'hiver. Une expérience de longue durée, réalisée pour tester cette hypothèse dans six ruisseaux de montagne du Colorado, a montré que les populations de truites résidentes augmentaient rapidement et significativement dans des portions expérimentales de 250m, par rapport à des témoins adjacents. Cependant, des mesures de la dispersion réalisées par des piégeages et des recaptures de truites marquées ont montré que les mouilles formées par des troncs augmentent les populations de truites adultes en permettant aux truites qui étaient en phase de déplacement de rester dans les portions expérimentales plutôt qu'en améliorant la survie hivernale sur place, comme le décrivent d'autres auteurs. La recherche sur les salmonidés d'eau courante non migrateurs et leur gestion a jusqu'à présent été marquée par un modèle impliquant des déplacements limités, ce qui implique que les adultes soient relativement sédentaires. Cependant, l

  5. Harmonization of welding qualification provisions in RCC-M and European standards; Rapprochement des regles relatives aux qualifications de soudage dans les normes europeennes et le RCC-M

    Energy Technology Data Exchange (ETDEWEB)

    Lemoine, M. [Areva-NP, Tour AREVA, 92084 - Paris La Defense cedex (France); Lainez, B. [Areva-NP, usine de Chalon sur Saone 71380 Saint Marcel (France); Anastassiades, P. [EDF/Ceidre - 2 rue Ampere - 93206 SAINT-DENIS Cedex (France)

    2007-07-01

    Since a long time, numerous precautions for welding have been integrated in the nuclear codes, in particular in the RCC-M applicable to pressurized water reactors, in order to guarantee a high quality level of permanent assemblies. In parallel, European and ISO standardization works have led to a harmonisation of practices on qualification of welding processes, welders and operators. In the context of the regulatory evolutions presented during this conference, it was judged appropriate to bring closer the RCC-M practices and those of EN and ISO standards, while taking the precaution of specifying, if necessary, the complementary provisions allowing maintaining guarantees of quality consistent with the prior experience feedback. This paper presents the amendments brought to the RCC-M Code by the 2005 and 2007 addenda, in order to respond to this objective, and develops their motivations. (authors) [French] De nombreuses precautions ont ete integrees de longue date dans les codes nucleaires, et en particulier dans le RCC-M applicable aux reacteurs a eau sous pression, en matiere de soudage afin de garantir un haut niveau de qualite de ces assemblages permanents. Par ailleurs, des travaux europeens, puis ISO, ont conduit a une harmonisation des pratiques en matiere de qualification des modes operatoires de soudage et des soudeurs et operateurs. Dans le contexte des evolutions reglementaires presentees par ailleurs au cours de cette conference, il a ete juge opportun de rapprocher les pratiques du RCC-M et celles des normes EN et ISO, en prenant la precaution de specifier au besoin les dispositions complementaires permettant de maintenir des garanties de qualite coherentes avec le retour d'experience anterieur. La communication presente les amenagements apportees au code RCC-M par les modificatifs 2005 et 2007, afin de repondre a cet objectif, et en developpe les motivations. (auteurs)

  6. Apoios de decisão: instrumento de auxílio à medicina baseada em preferências. Uma revisão conceitual Decision aids: an instrument to eliciting patient preference. Current concepts

    Directory of Open Access Journals (Sweden)

    Mirhelen Mendes de Abreu

    2006-08-01

    Full Text Available A necessidade da incorporação das preferências dos pacientes nas tomadas de decisão é uma realidade da assistência médica contemporânea, que caracteriza a medicina baseada em preferências. Os apoios de decisão são instrumentos que surgem como mecanismos de auxílio ao médico a expor riscos e benefícios de uma determinada tomada de decisão, sendo um mecanismo facilitador para a decisão compartilhada. Na literatura médica, particularmente em reumatologia, nota-se um emergente interesse pelo estudo das preferências dos pacientes nos ensaios clínicos. Este artigo de revisão tem por objetivo conceituar e caracterizar os apoios de decisão e suas implicações na pesquisa e prática clínicas, bem como ressaltar os princípios metodológicos necessários para a sua utilização e desenvolvimento.Patient preferences in decision making is one reality of the medical assistance, which characterizes the value based medicine. The decision aids are instruments that appear as support mechanisms for the doctor to exercise this model of decision making. In medical literature, particularly in rheumatology, an emergent interest on patient's preference study is noticed in clinical trials. The aim of this article is to appraise and to characterize the decision aids and its implications in the practical research and clinics, as well as standing out the necessary methodology principles for its use and development.

  7. Etude de la résistance aux antibiotiques de Pseudomonas aeruginosa au niveau de différents hôpitaux de l’ouest algérien

    OpenAIRE

    SEFRAOUI, Imane Ep KHELIL

    2015-01-01

    Année Universitaire: 2014-2015 Etude de la résistance aux antibiotiques de Pseudomonas aeruginosa au niveau de différents hôpitaux de l’ouest algérien ملخّص عصيّات Pseudomonas aeruginosa هي ج ا رثيم ممرضة انتهازية مسؤولة أساسا عن الالتهابات المكتسبة وتُظهر هذه البكتيريا قدرة التكيّف تجاه المضادّات الحيويّة ممّا يؤدّي إلى مشاكل علاجيّة حادّة في كثير من الأحيان. مجموع 217 جرثوم من عصيّات P. aeruginosa تمّ عزلها ما بين يناير 9002 ونوفمبر 2012 ، في مختلف الوحدات من ثلاثة مستشفيا...

  8. Impacts des TIC sur l’enseignement et l’apprentissage des conceptions relatives au champ électrostatique en classes préparatoires aux grandes écoles d’ingénieurs (CPGE

    Directory of Open Access Journals (Sweden)

    Abdelaziz Bouchaib

    2011-01-01

    Full Text Available Cet article décrit une séquence d’enseignement au cours de laquelle nous avons expérimenté les ressources numériques du site Université en Ligne (UeL, relatives au module d’électrostatique, avec des étudiants de la première année des classes préparatoires aux grandes écoles d’ingénieurs. Nous rappelons brièvement les difficultés conceptuelles rencontrées chez les étudiants de premier cycle universitaire dans le domaine de l’électrostatique. La description de la séquence, expérimentée durant trois années consécutives en deux versions, est suivie d’une analyse des perceptions des étudiants à propos du site UeL. Cette analyse montre que les étudiants sont largement satisfaits du contenu, de la clarté et de la motivation que le site procure dans l’apprentissage. Nous étudions ensuite l’apport de l’UeL sur les conceptions des étudiants participant à l’expérimentation à propos du champ électrostatique créé par une charge ponctuelle et du principe de superposition des champs créés par deux charges ponctuelles. Les résultats montrent que, lorsque les ressources de l’UeL sont intégrées en situation d’auto-apprentissage accompagné par un enseignant tuteur, elles permettent une bonne appropriation de ces concepts et une meilleure interprétation des situations utilisées comme instrument d’évaluation.

  9. Collecting Solar Energy. Solar Energy Education Project.

    Science.gov (United States)

    O'Brien, Alexander

    This solar energy learning module for use with junior high school students offers a list of activities, a pre-post test, job titles, basic solar energy vocabulary, and diagrams of solar energy collectors and installations. The purpose is to familiarize students with applications of solar energy and titles of jobs where this knowledge could be…

  10. Wind energy renewable energy and the environment

    CERN Document Server

    Nelson, Vaughn; Nelson, Vaughn

    2009-01-01

    Due to the mounting demand for energy and increasing population of the world, switching from nonrenewable fossil fuels to other energy sources is not an option-it is a necessity. Focusing on a cost-effective option for the generation of electricity, Wind Energy: Renewable Energy and the Environment covers all facets of wind energy and wind turbines. The book begins by outlining the history of wind energy, before providing reasons to shift from fossil fuels to renewable energy. After examining the characteristics of wind, such as shear, power potential, and turbulence, it discusses the measur

  11. Reconstruction of Petroleum Feedstocks by Entropy Maximization. Application to FCC Gasolines Reconstruction de coupes pétrolières par maximisation d’entropie. Application aux essences de FCC

    Directory of Open Access Journals (Sweden)

    Hudebine D.

    2011-06-01

    pétrolier, les coupes sont généralement des mélanges complexes de plusieurs centaines à plusieurs millions d’espèces chimiques différentes. De ce fait, les outils analytiques, même les plus performants, ne permettent pas de séparer et d’identifier l’ensemble des composés présents. Les fractions pétrolières sont donc actuellement caractérisées soit via des descripteurs macroscopiques moyens (densité, analyse élémentaire, résonance magnétique nucléaire, etc., soit à l’aide de techniques séparatives (distillation, chromatographie gaz ou liquide, spectrométrie de masse, etc. qui ne quantifient cependant que quelques grandes familles de molécules. Les méthodes de reconstruction de coupes pétrolières sont des approches informatiques qui permettent d’évoluer vers un détail plus moléculaire en se basant sur le principe suivant : définir des mélanges simplifiés mais cohérents de composés chimiques à partir de données analytiques parcellaires et de connaissances expertes du procédé étudié. Ainsi, la méthode de reconstruction par maximisation d’entropie, proposée dans cet article, est une technique récente et puissante permettant de déterminer les fractions molaires d’un mélange préétabli de composés chimiques en maximisant un critère entropique et en respectant les contraintes analytiques fixées par le modélisateur. L’utilisation de cette méthodologie permet de réduire le nombre de degrés de liberté du système de quelques milliers (correspondant aux fractions molaires des composés à quelques dizaines (correspondant aux paramètres de Lagrange associés aux contraintes analytiques et ainsi de diminuer fortement le temps de calcul nécessaire à la résolution du problème. Cette approche a été appliquée avec succès à la reconstruction d’essences de FCC en prédisant précisément la composition moléculaire de ce type de coupes pétrolières à partir d’une distillation simulée et d

  12. Femicidio: la forma più estrema di violenza contro le donne / Fémicide : la forme la plus extrême de violence faite aux femmes / Femicide: the most extreme form of violence against women

    Directory of Open Access Journals (Sweden)

    Karadole Cristina

    2012-04-01

    the victims and, especially, the clear links between this crime and violence against women. Le fémicide, comme forme extrême de violence faite aux femmes, est un phénomène encore méconnu car il existe encore peu d’études sur le sujet en Italie. À l’issue d’une revue de la littérature criminologique et féministe internationale, cet article vise à définir le concept de « fémicide » et ses différentes déclinaisons dans la recherche scientifique et dans la lutte politique féministe. Le texte met en évidence la particularité de ce délit, qui doit être considéré différemment par rapport aux autres formes d’homicides. En effet, il s’agit d’un crime qui découle de la relation de pouvoir entre les hommes et les femmes ; le fémicide est l'acte final du cycle de la violence masculine contre les femmes, dont il représente le point culminant. Contrairement au sens commun et à la représentation médiatique et comme cet essai tente de le démontrer, le fémicide n’existe pas dans les cultures autres qu’occidentales, pas plus qu’il n’est particulièrement rattaché aux situations de difficulté sociale ou de marginalité culturelle, mais il s'inscrit, en tant que violence à l’égard des femmes, dans des rapports « normaux » et dans le conflit homme/femme. Cela signifie que des situations considérées comme « sûres » peuvent pourtant comporter des facteurs de risque d’être victimes de fémicide pour les femmes concernées. En effet, les fémicides peuvent intervenir chez soi ou au domicile de la famille, dans une relation conjugale comme pour des couples non mariés.Ensuite, l’auteur analyse aussi bien les premières études sociologiques et criminologiques italiennes que des données sur le phénomène. La seconde partie de ce texte est dédiée à la lecture des informations tirées d’une étude sur les articles de presse menée par le Groupe d'études sur le fémicide de l'association bolognaise contre la violence

  13. L’évolution de l’affirmative action aux États-Unis sous la présidence de George W. Bush Evolution of Affirmative Action in the United States during the Presidency of George W. Bush

    Directory of Open Access Journals (Sweden)

    Marie-Christine Pauwels

    2010-03-01

    Full Text Available L’offensive contre l’affirmative action engagée depuis les années 1980 s’est accrue pendant les deux mandats de la présidence Bush, et l’opinion publique s’est radicalisée, percevant désormais de plus en plus fréquemment ces programmes comme une série d’avantages indûment octroyés à un certain nombre de « privilégiés ». Tout programme d’affirmative action doit désormais être étayé par des disparity studies démontrant la réalité de la discrimination, et seules des mesures très ciblées (narrowly tailored sont autorisées pour y remédier. La charge de la preuve a été en quelque sorte inversée. Mais contrairement aux idées reçues, l’affirmative action n’est pas sur le point de disparaître aux États-Unis et malgré son hostilité de principe, le gouvernement Bush n’a pris aucune mesure concrète pour démanteler ces programmes. L’affirmative action connaît aujourd’hui plusieurs transformations majeures, l’évolution la plus marquante étant l’effacement du critère ethno-racial au profit de critères plus neutres et moins idéologiquement polarisants, essentiellement d’ordre géographique et territorial. Dans l’enseignement supérieur par exemple, des procédures d’admission codées ont vu le jour pour favoriser l’accès des minorités ethniques sous-représentées aux campus d’élite, et diverses stratégies de contournement ont été mises en place dans l’adjudication des marchés publics. Ces transformations sont également intéressantes à analyser d’un point de vue transnational, puisque l’on observe une convergence croissante avec le modèle français de discrimination positive, lui aussi fondé sur le camouflage et l’euphémisation de l’identité ethno-raciale et sur une logique de territoire.This article examines the fate of affirmative action in the United States during the eight years of the Bush administration. After a brief reminder of the major landmarks

  14. Energy in Sweden 1996

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-09-01

    Statistical data on energy supply and consumption are presented, together with information on the current energy situation, developments in energy use and supply, prices and environmental data. The international energy and environmental situation is also treated. 31 figs

  15. Annual energy review 1996

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-07-01

    This report presents historical energy statistics on all major energy activities. The statistics cover consumption, production, trade, stock, and prices, for all major energy commodities including fossil fuels, electricity, and renewable energy sources.

  16. Energy Policy Act

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Energy Policy Act (EPA) addresses energy production in the United States, including: (1) energy efficiency; (2) renewable energy; (3) oil and gas; (4) coal; (5)...

  17. Energy valley in transition

    NARCIS (Netherlands)

    Verwayen, Barbara

    2006-01-01

    The Energy Valley foundation was born in 2004. It functions as a catalyst and platform for private and public organisations. It has a supporting and facilitating role in realising projects on energy conservation and sustainable energy. The Energy Valley a

  18. Seasonal thermal energy storage

    Energy Technology Data Exchange (ETDEWEB)

    Allen, R.D.; Kannberg, L.D.; Raymond, J.R.

    1984-05-01

    This report describes the following: (1) the US Department of Energy Seasonal Thermal Energy Storage Program, (2) aquifer thermal energy storage technology, (3) alternative STES technology, (4) foreign studies in seasonal thermal energy storage, and (5) economic assessment.

  19. Wind Energy Japan

    Energy Technology Data Exchange (ETDEWEB)

    Komatsubara, Kazuyo [Embassy of the Kingdom of the Netherlands, Tokyo (Japan)

    2012-06-15

    An overview is given of wind energy in Japan: Background; Wind Energy in Japan; Japanese Wind Energy Industry; Government Supports; Useful Links; Major Japanese Companies; Profiles of Major Japanese Companies; Major Wind Energy Projects in Japan.

  20. The energy; L'energie

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-07-01

    In order to inform the public on the stakes bonded to the energy, the french government developed seven days of information on the energy. Visits of energy facilities (production, transport, storage, distribution) are proposed. Colloquium, exhibitions and debates on the energy questions are also offered to the public. This paper summarizes the activities and the concerned addresses of these energy days. (A.L.B.)

  1. Geothermal Energy : An Alternative Source of Energy

    Directory of Open Access Journals (Sweden)

    R R Shah

    2014-04-01

    Full Text Available Nowadays renewable sources are preferred over the non renewable source to generate the energy. The rapid rates of exhausting non-renewable resources have completed us to look out for new avenues in energy generation. According to global energy scenario, developed countries are adopting renewable resources as major source of energy. Geothermal energy originates from the original formation of the planet, from radioactive decay of minerals, and from solar energy absorbed at the surface. Geothermal energy is derived from the hot interior of the earth. The earth is a reservoir of heat energy, most of which is buried and is observed during episodes of volcanic eruption at the surfaces. Geothermal is one of the most promising renewable source of energy which is plentiful, eco-friendly, reliable and clean source of energy available in earth crust. In our country there is wide scope for the utilization of geothermal energy with proper strategically approach to meet the energy requirement. The future prospects of this heat energy as a sustainable source of renewable energy are indeed promising. Today India is the fifth largest consumer of electricity and by 2030 it will become third largest overtaking Japan and Russia according to statistical data available by Energy Planning Commission, Government of India.

  2. Alternative energies. Alternative Energien

    Energy Technology Data Exchange (ETDEWEB)

    Hayes, D.

    1979-01-01

    This is a popular review of problems of present and, in particular, future energy supply. All energy sources available are discussed, including improved energy use and energy conservation. Solar energy is favoured as energy source of the future. A great number of examples are given along with many bibliographic references.

  3. The ABC's of Energy.

    Science.gov (United States)

    Barrow, Lloyd H., Ed.; Bitner, Betty L., Ed.

    This resource guide consists of activities related to 26 separate energy topics (one for each letter of the alphabet). Topic areas are: approaches to problems related to energy shortages; biomass; conserving energy; demand for energy in the year 2000; economics and energy; fossil fuels; geothermal energy; hydroelectric power; insulation; energy…

  4. Architecture and energy

    DEFF Research Database (Denmark)

    Marsh, Rob; Lauring, Michael

    2011-01-01

    Traditional low-energy architecture has not necessarily led to reduced energy consumption. A paradigm shift is proposed promoting pluralistic energy-saving strategies.......Traditional low-energy architecture has not necessarily led to reduced energy consumption. A paradigm shift is proposed promoting pluralistic energy-saving strategies....

  5. Tribal Energy Program, Assisting Tribes to Realize Their Energy Visions (Brochure), Energy Efficiency & Renewable Energy (EERE)

    Energy Technology Data Exchange (ETDEWEB)

    2013-06-01

    This 12-page brochure provides an overview of the U.S. Department of Energy Office of Energy Efficiency and Renewable Energy's Tribal Energy Program and describes the financial, technical, and educational assistance it provides to help tribes develop their renewable energy resources and reduce their energy consumption.

  6. Energy conservation and energy efficiency; Energiebesparing en energie-efficientie

    Energy Technology Data Exchange (ETDEWEB)

    Ossevoort, H.

    2013-07-15

    The author discusses the important role of the concepts of energy conservation and energy efficiency in the design and construction of buildings [Dutch] De auteur bespreekt hoe belangrijk de rol is van de begrippen energiebesparing en energie efficientie bij het ontwerpen en bouwen van gebouwen.

  7. Architecture and energy; Arkitektur og energi

    Energy Technology Data Exchange (ETDEWEB)

    Marsh, R.; Grupe Larsen, V.; Lauring, M.; Christensen, Morten

    2006-07-01

    The aim of this book is to illustrate the interaction between architecture and energy in an overall perspective starting from the new energy requirements. Architects make a lot of form related outlines early in the design process, and these have significant consequences for the energy consumption. Furthermore, the new energy requirements start from an overall evaluation, during which the architectural form is of decisive importance to minimization of the energy consumption. The book focuses on four themes: a) day lighting, which plays a decisive part in relation to our health and wellness inside buildings, b) solar heating; passive solar heating has traditionally been playing an important part in low-energy architecture, c) rough house; choice of materials can both increase and decrease buildings' energy consumption, and d) technology; modern buildings use a number of energy demanding installations, therefore the interaction between technology and energy is examined. (BA)

  8. The Energy Efficient Enterprise

    Energy Technology Data Exchange (ETDEWEB)

    Ahmad, Bashir

    2010-09-15

    Since rising energy costs have become a crucial factor for the economy of production processes, the optimization of energy efficiency is of essential importance for industrial enterprises. Enterprises establish energy saving programs, specific to their needs. The most important elements of these energy efficiency programs are energy savings, energy controlling, energy optimization, and energy management. This article highlights the industrial enterprise approach to establish sustainable energy management programs based on the above elements. Globally, if organizations follow this approach, they can significantly reduce the overall energy consumption and cost.

  9. Industry and energy; Industrie et energie

    Energy Technology Data Exchange (ETDEWEB)

    Birules y Bertran, A.M. [Ministere des Sciences et de la Technologie (Spain); Folgado Blanco, J. [Secretariat d' Etat a l' Economie, a l' Energie et aux PME du Royaume d' Espagne (Spain)

    2002-07-01

    This document is the provisional version of the summary of the debates of the 2433. session of the European Union Council about various topics relative to the industry and the energy. The energy-related topics that have been debated concern: the government helps in coal industry, the internal electricity and gas market, the trans-European energy networks, the bio-fuels in transportation systems, the energy charter, the pluri-annual energy program, and the green book on the security of energy supplies. (J.S.)

  10. Project of law, adopted by the Senate after urgency declaration, relative to the energy markets and to the energy public utilities; Projet de loi adopte par le Senat apres declaration d'urgence relatif aux marches energetiques et au service public de l'energie

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2002-10-01

    This project of law treats of: 1 - the right of access to natural gas distribution networks (transit contracts, eligible clients and market opening, acknowledged suppliers, diversification of supplies, denial of contract, derogations); 2 - the transparency and regulation of the natural gas sector (prices and commercial conditions, transport and storage informations, organisation of the regulation authority); 3 - the natural gas public utility (organisation, obligations, supplies warranty and security, national observatory); 4 - the natural gas transport and distribution (network management, expertises and controls, maintenance); 5 - the underground storage (mining law, storage concession, exploitation); 6 - the controls and sanctions; 7 - the dispositions relative to the electric public utility (costs, taxes and contributions, overruns, regulation authority). (J.S.)

  11. Energy supply and energy saving in Ukraine

    Directory of Open Access Journals (Sweden)

    V.M. Ilchenko

    2015-09-01

    Full Text Available The article examines the main problems and solutions of energy saving and energy supply in Ukraine. Low energy efficiency has become one of the main factors of the crisis in the Ukrainian economy. The most relevant scientific and methodical approaches to assessment of the level of energy consumption and saving are indicated. The comparative analysis of annual energy use has been made. A potential to solve energy supply problems is strongly correlated with the ability to ensure the innovative development of economy for efficient and economical use of existing and imported energy resources. The ways for reducing of energy resource consumption have been suggested. Creation of technological conditions for the use of alternative energy sources is considered to be rational also. The development of renewable sources of energy (alternative and renewable energy sources will provide a significant effect in reducing the use of traditional energy sources, harmful emissions and greenhouse gas. Under these conditions, increasing of energy efficiency of economy and its competitiveness can be real. Improvement of environmental and social conditions of citizens of the country will mark a positive step towards the EU, and also will cancel some problems of the future generation.

  12. RENEWABLE ENERGY IN TOURISM

    OpenAIRE

    MĂDĂLINA MIHĂILĂ

    2012-01-01

    Recent reports published by the International Energy Agency and U.S. Department of Energy, regarding the global energy outlook for the first three decades of the XXI century, warns of global trends on energy demand, increasing dependence on energy imports, coal use and volume emissions of greenhouse gases, torism industry being one of the biggest energy consumption industry. Uncertainties on different models of regional development and access of the world to traditional energy resources requi...

  13. Assessment and management of risks associated with exposures to Auger- and beta-emitting radionuclides. Recommendations and proposals for lines of research; L'evaluation et la gestion des risques associes aux expositions aux radionucleides emetteurs Auger et beta. Avis et propositions de pistes de recherche

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2010-07-01

    The assessment and management of risks associated with exposures to ionising radiation are defined by the general radiological protection system, proposed by the International Commission on Radiological Protection (ICRP). This system is regarded by a large majority of users as a robust system with well-established relevance for the management and prevention of exposures. Despite this, there are a number of dissenting voices, claiming that this system is not suitable for estimating the risks resulting from internal exposures, particularly when incorporated radionuclides decay, emitting electrons. Criticisms of the system particularly pertain to Auger- and beta-emitting radionuclides, the intake of which can occur during environmental and industrial exposures or, simply, during a medical use of ionising radiation for diagnostic or therapeutic purposes. These debates result from a lack of data in the fields of dosimetry and toxicology of these radionuclides. Auger and beta emitters can be distributed preferentially in certain tissue structures and even in certain cellular organelles, according to the vector with which they are associated. Given the limited range of electrons in matter, this heterogeneous distribution can generate highly localised energy depositions, not taken into account in conventional dosimetry methods, which make the assumption of uniform energy depositions. These specific physical and biochemical features of some of these radionuclides seem to influence their cellular toxicity directly. It is thus established that intranuclear distribution of iodine-125 is more effective for the induction of mutations or even cell death than a cytosolic distribution. This point is explained by the very short range of Auger electrons in matter (around a few dozen nm), which, in the case of an intranuclear distribution, would deliver all of their energy in the vicinity of the DNA, which, if affected, would be detrimental to the survival of the cell. The observation

  14. Energy saving synergies in national energy systems

    DEFF Research Database (Denmark)

    Thellufsen, Jakob Zinck; Lund, Henrik

    2015-01-01

    In the transition towards a 100% renewable energy system, energy savings are essential. The possibility of energy savings through conservation or efficiency increases can be identified in, for instance, the heating and electricity sectors, in industry, and in transport. Several studies point...... to various optimal levels of savings in the different sectors of the energy system. However, these studies do not investigate the idea of energy savings being system dependent. This paper argues that such system dependency is critical to understand, as it does not make sense to analyse an energy saving...... without taking into account the actual benefit of the saving in relation to the energy system. The study therefore identifies a need to understand how saving methods may interact with each other and the system in which they are conducted. By using energy system analysis to do hourly simulation...

  15. Energy consumption: energy consumption in mainland Norway

    Energy Technology Data Exchange (ETDEWEB)

    Magnussen, Inger Helene; Killingland, Magnus; Spilde, Dag

    2012-07-25

    The purpose of this report is to describe trends in energy consumption in mainland Norway, with an emphasis on key trends within the largest consumer groups. We also explain common terms and concepts in the field of energy consumption. Finally, we look at forecasts for future energy consumption, produced by bodies outside NVE. Total final energy consumption in mainland Norway in 2009 was 207 TWh. The most important end-user groups are households, service industries, manufacturing industry and transport. In addition, the energy sector in mainland Norway consumed 15 TWh. Energy consumed in the energy sector is not considered as final consumption, as the energy is used to produce new energy products. The long-term trend in energy consumption in mainland Norway is that fuel in the transport sector and electricity for the energy sector increases, while energy consumption in other sectors flattens out. The main reason for an increased use of fuel in the transport sector is the rise in the number of motorised machinery and vehicles in mainland Norway. This has caused a rise in gasoline and diesel consumption of 75 per cent since 1976. The petroleum sector is the largest consumer of energy within the energy sector in mainland Norway, and electricity from onshore to platforms in the North Sea and to new shore side installations has led to a rise in electricity consumption from 1 TWh in 1995 to 5 TWh in 2009. The energy consumption in households showed flat trend from 1996 to 2009, after many years of growth. The main reasons are a warmer climate, higher energy prices, the use of heats pumps and more energy-efficient buildings. In the service industries, the growth in energy consumptions has slightly decreased since the late 1990s, for much the same reasons as for households. In manufacturing industries the energy consumption have flatten out mainly due to the closure of energy-intensive businesses and the establishment of new more energy-efficient businesses. Electricity is

  16. Sea energy; Energie de la mer

    Energy Technology Data Exchange (ETDEWEB)

    Anon.

    2004-07-01

    The tidal and wave power of the sea could offer electric power for many towns and villages of seashore. This document presents the possibilities of electric power production from the sea energy (submarine wind turbines, tidal energy and wave energy) and the research programs in the world. (A.L.B.)

  17. Energy and health; Energie et sante

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-07-01

    If the energy is an important factor of public health a d quality by the technology development (heat, transport, production and communication), it may also generate hazard for the environment and the health. This report takes stock on the impacts and the risks of the use of energy sources with a special interest to the nuclear energy. (A.L.B.)

  18. Energy system comprising an electrochemical energy source

    NARCIS (Netherlands)

    Roozeboom, F.; Notten, P.

    2010-01-01

    The invention relates to an energy system comprising an electrochemical energy source, wherein said electrochemical energy source comprises at least one assembly of a first electrode, a second electrode, and an intermediate solid-state electrolyte separating said first electrode and said second elec

  19. Guam Strategic Energy Plan

    Energy Technology Data Exchange (ETDEWEB)

    Conrad, M. D.

    2013-07-01

    Describes various energy strategies available to Guam to meet the territory's goal of diversifying fuel sources and reducing fossil energy consumption 20% by 2020.The information presented in this strategic energy plan will be used by the Guam Energy Task Force to develop an energy action plan. Available energy strategies include policy changes, education and outreach, reducing energy consumption at federal facilities, and expanding the use of a range of energy technologies, including buildings energy efficiency and conservation, renewable electricity production, and alternative transportation. The strategies are categorized based on the time required to implement them.

  20. Potentiel et limites d'utilisation, aux températures élevées, des lubrifiants liquides dans les moteurs Potential and Limitations of Use of Liquid Lubricants in Engines At High Temperatures

    Directory of Open Access Journals (Sweden)

    Toulhoat H.

    2006-11-01

    Full Text Available Cet article examine les possibilités de réponse de la formulation des lubrifiants à une élévation des températures dans les moteurs automobiles de la prochaine décennie; l'accroissement des puissances spécifiques des moteurs, et la réduction de leurs dimensions et de leur poids, la pénétration des turbo-compresseurs et des pots catalytiques, et dans une certaine mesure la tendance à réduire les rejets thermiques à l'échappement, sont des forces motrices pour cette évolution. Une augmentation de la température moyenne à la rampe d'environ 15 à 20°C est attendue pour la plupart des moteurs courants, à essence ou Diesel. Les températures en fond de gorge de segment de feu resteront très probablement dans l'intervalle actuel 250-260°C grâce aux systèmes de refroidissement des pistons. L'évolution des moteurs Diesel de camions dans les cinq dernières années est significative de cette tendance. Une telle évolution n'induira pas de bouleversements majeurs dans la formulation des lubrifiants pour automobiles. Cependant, elle déterminera une demande en VI significativement accrue de façon à maintenir les conditions de la lubrification hydrodynamique aux paliers, aussi bien que le comportement au démarrage à froid. Ceci sera obtenu par une meilleure combinaison des bases, avec une mise en oeuvre accrue des bases hydrotraitées et synthétiques, et un renforcement de l'additivation en épaississants ( règle du pouce: 0. 25 % par incrément de 1°C de température moyenne. Une alternative pourrait provenir de progrès réalisés sur le comportement visco-élastique et la stabilité sous cisaillement de ces polymères additifs de viscosité. Une autre exigence sur les propriétés des lubrifiants afin de faire face à cet accroissement apparemment marginal de température de fonctionnement, sera une meilleure résistance à l'oxydation, et dans cette optique, le recours aux bases non conventionnelles sera à nouveau

  1. Monthly Energy Review, July 1992

    Energy Technology Data Exchange (ETDEWEB)

    None

    1992-07-27

    The Monthly Energy Review is prepared by the Energy Information Administration. Topics discussed include: Energy Overview, Energy Consumption, Petroleum, Natural Gas, Oil and Gas Resource Development, Coal, Electricity, Nuclear Energy, Energy Prices, International Energy. (VC)

  2. Monthly Energy Review

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-05-28

    This publication presents an overview of the Energy information Administration`s recent monthly energy statistics. The statistics cover the major activities of US production, consumption, trade, stocks, and prices for petroleum, natural gas, coal, electricity, and nuclear energy. Also included are international energy and thermal and metric conversion factors. Two brief ``energy plugs`` (reviews of EIA publications) are included, as well.

  3. Energy Conservation Simplified

    Science.gov (United States)

    Hecht, Eugene

    2008-01-01

    The standard formulation of energy conservation involves the subsidiary ideas of kinetic energy ("KE"), work ("W"), thermal energy, internal energy, and a half-dozen different kinds of potential energy ("PE"): elastic, chemical, nuclear, gravitational, and so forth. These quantities came to be recognized during the centuries over which the…

  4. Mise au point d'une forme stable de l'allergène Der p 3 de Dermatophagoides pteronyssinus pour le diagnostic rapide et le développement de nouvelles approches d'immunothérapie de l'allergie aux acariens

    OpenAIRE

    Bouaziz, Ahlem

    2014-01-01

    L’allergie aux acariens touche 20 à 30 % de la population occidentale. L’allergène Der p 3 de l’acarien Dermatophagoides pteronyssinus est une protéase à serine active appartenant à la famille de la trypsine. Son activité protéolytique pourrait être un facteur adjuvant impliqué dans le développement et la chronicité de l’allergie. A l’heure actuelle, l’implication de Der p 3 dans l’allergie est peu connue et son taux de fixation des IgE provenant de patients allergiques est controversé. Cepe...

  5. Proposals for Solutions to Problems Related to the Use of F-34 (SFP) and High Sulphur Diesel on Ground Equipment Using Advanced Reduction Emission Technologies (Propositions de solutions aux problemes lies a l’utilisation de F-34 (SFP) et de diesel a haute teneur en soufre pour le materiel terrestre disposant de technologies avancees de reduction des emissions)

    Science.gov (United States)

    2008-09-01

    avancées de réduction des émissions (RTO-TM-AVT-ET-073) Synthèse Lors de sa réunion 2005, le Groupe de travail AC/112 de l’OTAN sur les carburants et les...émissions nécessitent l’utilisation de carburants à faible teneur en soufre (LSF). Le F-34 utilisé en vertu de la Politique du carburant unique de l’OTAN...Single Fuel Policy, ou SFP) est un carburant à haute teneur en soufre, en comparaison des carburants diesels européens et américains conformes aux

  6. Concepção da célula de trabalho de equipamento de auxílio à colheita da cana-de-açúcar sob a perspectiva da ergonomia e da segurança do trabalho

    OpenAIRE

    Pezzin Júnior, Renato; Abrahão, Roberto Funes; Tereso,Mauro José Andrade

    2013-01-01

    O trabalho busca conceber, a partir da perspectiva da ergonomia e da segurança do trabalho, a célula de trabalho do equipamento de auxílio à colheita denominado UNIMAC CANA. No posto de trabalho, o conceito mecânico proposto utiliza operadores na transferência da cana da frente de corte até o mecanismo de limpeza, buscando preservar parte da mão-de-obra utilizada na colheita manual. Baseado nos conceitos da Ergonomia de Concepção, foi realizada uma análise da atividade futura dos operadores a...

  7. La formation des enseignants du primaire en France, de l’Ecole normale aux IUFM (18e-20e siècles) : place et rôle de l’écrit professionnel en tant qu’outil de formation

    OpenAIRE

    Azoulay, Carole

    2014-01-01

    Cette thèse présente deux siècles d’analyse des écrits professionnels dans la formation des maîtres du premier degré en France : des premières Ecoles normales aux derniers IUFM. A travers ces institutions, les programmes contenus dans les écrits sont étudiés en termes de savoirs (institutionnels, théoriques et pratiques) et font l’objet d’une étude historique qui retrace l’évolution des dispositifs de formation. Cette évolution traduit la mise en place progressive du processus de professionna...

  8. Mobility energy label: An indicator for a sustainable city; Les etiquettes energetiques de mobilite: Un indicateur pour la ville durable

    Energy Technology Data Exchange (ETDEWEB)

    Flety, Yann; Antoni, Jean-Philippe; Vuidel, Gilles; de Sede-Marceau, Marie-Helene

    2010-09-15

    Perspectives of energy consumption reduction linked to global warming are bringing a desire for actions relating to the mastering and the improvement of energy efficiency. In this context, from the French example of greater Besancon (Communaute d'Agglomeration du Grand Besancon (CAGB)), the research presented here wants to define an energy indicator useful to planners called 'Territory energy label': to measure how the urban area is situated energy wise in terms of the daily mobility of its inhabitants, the behaviour of whom is looked at in a prescriptive manner. [French] Les perspectives de reduction des consommations energetiques en lien avec le rechauffement climatique se traduisent par une volonte d'actions en matiere de maitrise et d'amelioration de l'efficacite energetique. Dans ce contexte, a partir de l'exemple francais de la Communaute d'Agglomeration du Grand Besancon (CAGB), la recherche presentee vise a definir un indicateur energetique utile aux amenageurs intitule 'etiquette energetique Territoriale' : il s'agit de mesurer comment 'se situent energetiquement' les differents espaces que regroupent une meme aire urbaine du point de vu des mobilites quotidiennes de ses habitants, dont le comportement est apprehende de maniere normative.

  9. La compréhension en lecture aux deuxième et troisième cycles du primaire: regard sur les pratiques déclarées d’enseignement

    Directory of Open Access Journals (Sweden)

    Virgine Martel

    2010-06-01

    Full Text Available RésuméAfin de dresser le portrait actuel des pratiques enseignantes en matière de compréhension en lecture aux deuxième et troisième cycles du primaire, la présente recherche a identifié, par le biais d'un questionnaire, les pratiques pédagogiques de 413 enseignants de différentes régions du Québec. Alors que les études réalisées au tournant des années 2000 laissaient penser que les enseignants se conformaient à un enseignement relativement traditionnel et peu tourné vers l'enseignement de stratégies de compréhension, les résultats de la présente recherche démontrent que les enseignants déclarent équiper leurs élèves de stratégies en vue de développer leur compétence à comprendre le discours écrit. Toutefois, il semble évident que certaines pratiques, notamment celles liées à l'enseignement de stratégies métacognitives et à l'enseignement réciproque sont délaissées par plus de la moitié des enseignants. Ainsi, des améliorations sont souhaitables, voire fondamentales afin d'améliorer la compétence des élèves.AbstractThis article presents the results of a survey completed by 413 elementary school teachers across Quebec. The study aimed to document current teaching practices relating to reading comprehension. While studies completed at the beginning of this century suggested that teachers tend to resort to relatively traditional teaching that does not focus explicitly on teaching comprehension strategies, the results of this study show that teachers claim that they equip their students with strategies that enhance their reading comprehension skills. However, some practices, and in particular those linked to metacognitive strategies and reciprocal teaching, appear to be neglected by more than half of the participants in this study. Implications for improving reading instruction are offered.

  10. Características da marcha de um paciente com osteoartrose de quadril com e sem auxílio de bengala Characteristics of cane-assisted and non-assisted gait in a patient with hip osteoarthrosis

    Directory of Open Access Journals (Sweden)

    Susane Graup

    2009-12-01

    Full Text Available O objetivo deste estudo foi comparar características espaciais, temporais e espaço-temporais da marcha de um paciente com osteoartrose de quadril com e sem o auxílio de dispositivo (bengala. O caso é o de um sujeito com osteoartrose de quadril esquerdo de 63 anos, 97,8 kg e 1,76 m. Um sistema de reconstrução tridimensional de movimento foi utilizado para análise da marcha. Foram registrados três ciclos completos da marcha com e sem a utilização da bengala, sendo analisadas variáveis espaciais, temporais e espaço-temporais. Foi feita análise estatística, com nível de significância de 5%. Os principais resultados indicam que o comprimento de passo direito (CPD e esquerdo (CPE, bem como o comprimento total do ciclo, foram superiores com o uso da bengala durante a marcha; o CPE foi significativamente maior do que o CPD quando o sujeito utilizava a bengala; todas as variáveis temporais foram estatisticamente menores com o uso da bengala; a cadência da marcha e a velocidade foram estatisticamente superiores com a bengala. Pode-se concluir que o uso da bengala gerou diferenças significativas no comportamento das variáveis espaciais, temporais e espaço-temporais durante a marcha, melhorando de forma significativa a eficiência do movimento do paciente com osteoatrose de quadril.The purpose of this study was to compare cane-assisted and non-assisted gait temporal, spatial and spatiotemporal features in a patient with hip osteoarthrosis. The patient studied, with left hip osteoarthrosis, was 63 years old and had 97.8 kg and 1.76 m. A three-dimensional analysis system was used for the analysis of gait. Three complete gait cycles with and without cane assistance were recorded, where temporal, spatial and spatiotemporal variables were analysed. Descriptive statistics was used with the level of significance set at 5%. Main results show that left step length (LSL, right step length (RSL and stride length were greater during cane

  11. Ouverture du colloque « La cour et les sciences : naissance des politiques scientifiques dans les cours européennes aux xviie et xviiie siècles »

    Directory of Open Access Journals (Sweden)

    Béatrix Saule

    2011-09-01

    Full Text Available À l’occasion de l’exposition « Sciences et curiosités à la cour de Versailles » au château de Versailles (26 octobre 2010 au 3 avril 2011, le Centre de recherche du château de Versailles a organisé le colloque « La cour et les sciences : naissance des politiques scientifiques dans les cours européennes aux xviie et xviiie siècles ». Pour les sciences et pour le royaume – devrions-nous dire. En effet, la cour, siège du pouvoir et lieu de concentration des capitaux, soutenait la recherche scientifique tandis que cette dernière devait servir les intérêts généraux du pays et la gloire de son souverain. En un temps qui ignorait encore la séparation entre les deux cultures, scientifique et technique d’un côté, humaniste et artistique de l’autre, on vit cependant s’affirmer une nouvelle idée de la science. Cette modernité, la plupart du temps, ne put exister sans le concours actif des princes. La cour, comme lieu d’expérimentation, d’innovations techniques, apparaît comme un des moteurs des évolutions de la recherche, permettant notamment des applications concrètes. L’implication des souverains européens, par leur éducation, par leurs rapports privilégiés avec les savants, fut souvent à l’origine du développement des connaissances scientifiques dans de nombreux domaines. Dans ce colloque, il s’agit donc essentiellement d’étudier les politiques scientifiques volontaristes ou non des états européens sous l’Ancien Régime en s’attachant particulièrement à la recherche « fondamentale » et à la recherche « utile » (amélioration de la santé, lutte contre la famine, progrès des techniques, des constructions et des bâtiments, etc.. Volontairement comparatistes, les études englobent l’ère géographique européenne à travers trois axes : le financement des sciences et des scientifiques, la communauté scientifique face à la cour et, enfin, la diffusion et la culture

  12. Histoire de l’hôpital. L’éclairage des salles d’opération aux XIXe et XXe siècles : l’apparition du scialytique

    Directory of Open Access Journals (Sweden)

    Francis Dreyer

    2009-05-01

    Full Text Available L’éclairage des salles d’opération dans les hôpitaux et plus particulièrement celui des zones opératoires était l’un des problèmes récurrents qui entravaient le déroulement de certaines interventions. Les ombres, la focalisation et la chaleur de la source gênaient les chirurgiens. Plus que cela, la promiscuité entre les praticiens et leurs patients, la tradition des cours magistraux et les usages multiples de la salle de travail entraînaient la prolifération de maladies nosocomiales mortelles. Au début du XXe siècle, la venue d’une nouvelle source lumineuse, le scialytique BBT, qui projette un faisceau lumineux sans ombre portée, permit enfin de répondre aux besoins des médecins. Plus que la simple amélioration d’un confort visuel, le scialytique participa à la transformation de l’ancienne salle d’opération en un élément unique : le bloc opératoire. Cet espace hautement spécialisé et confiné put dès lors être placé stratégiquement, suivant les besoins, à l’intérieur de « l’hôpital bloc » moderne.The lighting of operating rooms in hospitals, and, more especially the lighting of operating zones, was a persistent problem which could interfere with certain surgical operations. Shadows, focussing and the heat from the light source were nuisance for the surgeons. The promiscuity between surgeons and patients, the tradition of holding courses during operations and the fact that operating rooms could be used for other purposes led to an increase in often fatal nosocomial infections. At the beginning of the twentieth century, the appearance of a new type of operating lamp, the scialytique BBT, which could light without casting shadows, at last brought a solution to the problem. But this new type of lighting not only increased the visual comfort of surgeons at work, it also had an impact in transforming the operating room into a dedicated space, the modern operating theatre. This highly specialised

  13. Ampleur et impact des évènements indésirables graves liés aux soins: étude d'incidence dans un hôpital du Centre-Est tunisien

    Science.gov (United States)

    Bouafia, Nabiha; Bougmiza, Iheb; Bahri, Fathi; Letaief, Mondher; Astagneau, Pascal; Njah, Mansour

    2013-01-01

    Introduction La prévention des événements indésirables représente une priorité de santé du fait de leur fréquence et de leur gravité potentielle. Ce travail a été mené afin d'avoir un diagnostic de la situation épidémiologique relative aux événements indésirables survenant dans notre hôpital. Méthodes Une étude prospective a été menée auprès de tous les patients qui ont été hospitalisés au CHU Farhat Hached - Sousse (Tunisie) sur une période d'un mois dans quatorze services de l'hôpital. La détection d'évènement indésirable grave (EIG) était basée sur les critères adoptés dans différentes études. Les tests T et Chi 2 ont été utilisés pour identifier les facteurs contribuant à l'apparition d'évènements indésirables. Résultats Au total, 162 EIG ont été identifiés pendant la période. 45% de ces évènements étaient des infections nosocomiales. Ces EIG ont eu comme conséquences un décès chez 9,2% des patients, la mise en jeu du pronostic vital de 26% des patients et la prolongation de la durée de séjour chez 61,7% d'entre eux. L'admission dans des circonstances particulières et l'exposition à des soins invasifs étaient identifiés comme des facteurs de risque potentiels EIG. Conclusion Le renforcement de la stratégie de gestion des risques sanitaires en ciblant préférentiellement le risque infectieux constitue une étape fondamentale dans l'amélioration de la sécurité des patients au sein de notre établissement de santé. PMID:24711868

  14. Aux origines de la civilisation orientale

    Directory of Open Access Journals (Sweden)

    Jean Perrot

    2007-09-01

    Full Text Available Entre le 10e et le 3e millénaire av. l’ère chrétienne, l’Asie du Sud-Ouest a été le théâtre d’événements annonciateurs d’une inflexion décisive du destin de l’humanité. Ces événements signalent un changement radical dans le rapport des hommes avec le milieu naturel. Mettant à profit une amélioration générale des conditions climatiques, amélioration qui s’accentue à partir de 10 000 avant l’ère chrétienne, des bandes qui vivaient de la chasse, de la pêche et de la cueillette dans les régions l...

  15. AVIS AUX PASSIONNES... - French version only

    CERN Multimedia

    2002-01-01

    Les anémones du CERN seront bientôt orphelines. Nous recherchons une personne volontaire pour s'occuper de l'aquarium situé au bâtiment principal, pour une durée d'une année. Si vous êtes intéressé, ou si vous voulez plus d'information, téléphonez au 73830 (les anémones vivant dans l'aquarium vous remercient beaucoup d'avance).

  16. Introduction aux dynamiques cat\\'egoriques connectives

    CERN Document Server

    Dugowson, Stéphane

    2011-01-01

    This text is a continuation to my former article "On Connectivity Spaces". It takes into account that connectivity spaces gives rise to phenomena which are essentially dynamic. In a first stage, the representation of finite connectivity spaces by links (Brunn-Debrunner-Kanenobu's theorem) leads to the notion of connective representation. But examples of connective representations often come from dynamical systems. And this is even more obvious when we study the adjoint notion of connective foliation. To apply those notions to dynamics, we first need to consider dynamical systems in an unified way. This is done with a categorical point of view on temporalities and dynamics. It is then possible to define categorical connective dynamics, and to apply to them the various connective notions, specially the connectivity order of a connectivity space.

  17. ALLERGIE AUX PROTEINES LAIT DE VACHE

    OpenAIRE

    DIABI, FATIMA ZOHRA; DIBOUN, KHAWLA

    2014-01-01

    Notre étude a pour but d’aider les médecins généralistes et les pédiatres pour leur permettre un meilleur repérage des nourrissons allergiques et les orienter au début de leur démarche diagnostique. Ils pourront ainsi identifier les principaux facteurs prédictifs d’APLV, mesurer le risque d’aboutir au diagnostic d’APLV et mieux adapter leurs prescriptions d’examens complémentaires. En améliorant le dépistage, nous pouvons espérer un progrès dans le diagnostic et la prise en ...

  18. Des cafés aux dancings

    Directory of Open Access Journals (Sweden)

    David Vrydaghs

    2009-09-01

    Full Text Available Comme la plupart des collectifs dont les membres sont unis par un objectif commun, le groupe surréaliste français a régulé son activité de plusieurs façons. Ses efforts en ce sens furent notamment d’ordre organisationnel, avec par exemple la création d’un Bureau de recherches surréalistes ou la tenue de réunions régulières au café ; ils eurent également lieu dans le domaine esthétique, avec notamment la défense du merveilleux et de la poésie ; ils portèrent enfin sur les comportements des uns...

  19. Des surréalistes aux situationnistes

    Directory of Open Access Journals (Sweden)

    Alexandre Trudel

    2009-09-01

    Full Text Available L’objet de cet article concerne la différence entre l’esthétique du rêve pratiquée par les surréalistes et l’esthétique de l’ivresse pratiquée par les membres de l’Internationale lettriste (1952-1957 puis par leurs descendants situationnistes (1957-1972. On cherchera surtout à comprendre en quoi consiste le « dépassement », du point de vue situationniste, du rêve au profit de l’ivresse. Mais pourquoi cette comparaison ? Tout d’abord parce que nous avons ici affaire à deux groupes similaires...

  20. Accessibilite des batiments publics aux personnes handicapees

    CERN Document Server

    Colloca, C

    2003-01-01

    Selon les législations suisse et franèaise, les lieux de travail ainsi que les bâtiments recevant du public, doivent être aménagés en tenant compte de la présence de travailleurs et de public handicapés et de manière à favoriser leur autonomie. Les dispositions adoptées pour les accès, les portes, les dégagements et les ascenseurs desservant les postes de travail ou à vocation conviviale, et les locaux annexes tels que locaux sanitaires, locaux de restauration, parcs de stationnement, doivent permettre l'accès et l'évacuation des personnes handicapées, notamment celles circulant en fauteuil roulant.

  1. Building integrated photovoltaic; Photovaltaique integre aux batiments

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2004-01-01

    Durable, modular and flexible in use, as demonstrated by the different case studies in this publication, photovoltaic can replace diverse building elements, from glass facades to weather proof roofs. This leaflet towards architects describes aesthetic, technical, economic and environmental interest of building integrated photovoltaic. (author)

  2. Wind energy renewable energy and the environment

    CERN Document Server

    Nelson, Vaughn

    2013-01-01

    As the demand for energy increases, and fossil fuels continue to decrease, Wind Energy: Renewable Energy and the Environment, Second Edition considers the viability of wind as an alternative renewable energy source. This book examines the wind industry from its start in the 1970s until now, and introduces all aspects of wind energy. The phenomenal growth of wind power for utilities is covered along with applications such as wind-diesel, village power, telecommunications, and street lighting.. It covers the characteristics of wind, such as shear, power potential, turbulence, wind resource, wind

  3. Dissolve energy obesity by energy diet

    Energy Technology Data Exchange (ETDEWEB)

    Kim, Jung Heum [Sunmoon University, Asan (Korea)

    2000-07-01

    Every organism takes needed materials or energy from outside and excretes unessential things to outside. This is called a metabolism or energy metabolism. Calculating the amount of energy consumed by human in the world by converting to the amount of metabolism of an animal to survive, the weight of a human being is corresponding to an animal with a weigh of 40 ton. Human beings can find a solution to dissolve energy obesity or can maintain a massive status by finding a new energy source in the universe.

  4. GLOBAL ENERGY CRISIS AND RENEWABLE ENERGY SOURCES

    OpenAIRE

    Katarzyna Piechota

    2013-01-01

    The sudden development of the mankind at the turn of the 19th and 20th centuries brought along the growth in importance of exploiting the energy of different type. When uninterruptedly a demand for the energy is growing, and abilities of increasing the supply for her are limited, we can deal with the occurrence of an energy crisis. The article is moving the subject matter of an global energy crisis. A definition of an energy crisis, his genesis and effects were included in it for world econom...

  5. Energy Storage and Smart Energy Systems

    DEFF Research Database (Denmark)

    Lund, Henrik; Østergaard, Poul Alberg; Connolly, David

    2016-01-01

    It is often highlighted how the transition to renewable energy supply calls for significant electricity storage. However, one has to move beyond the electricity-only focus and take a holistic energy system view to identify optimal solutions for integrating renewable energy. In this paper......, an integrated cross-sector approach is used to determine the most efficient and least-cost storage options for the entire renewable energy system concluding that the best storage solutions cannot be found through analyses focusing on the individual sub-sectors. Electricity storage is not the optimum solution...... to integrate large inflows of fluctuating renewable energy, since more efficient and cheaper options can be found by integrating the electricity sector with other parts of the energy system and by this creating a Smart Energy System. Nevertheless, this does not imply that electricity storage should...

  6. Energy and creativity; Energie und Kreativitaet

    Energy Technology Data Exchange (ETDEWEB)

    Kuemmel, R. [Wuerzburg Univ. (Germany)

    1998-12-31

    Energy utilization influences our life and the development of the society. The book starts from natural energy sources and the history of technical progress and shows the power of energy in present production and analyses energy economical general conditions. Besides the reduction of polluting emissions is the focus of interest innovative engineering as also utilization of renewable energy sources. The volume turns to all, who expect a better future from innovations by energy engineering. [Deutsch] Dieses Buch beschreibt, wie Energienutzung unser Leben praegt und die Entwicklung der Gesellschaft beeinflusst. Ausgehend von den naturgegebenen Energiequellen und der Geschichte des technischen Fortschritts zeigt es die Macht der Energie in der heutigen Produktion und analysiert energiewirtschaftliche Rahmenbedingungen. Neben der Verringerung umweltbelastender Emissionen stehen dabei sowohl innovative Techniken der rationellen Energieverwendung als auch die Nutzung nichtfossiler Energiequellen im Mittelpunkt. Der Band wendet sich an alle, die von energietechnischen Innovationen einen Beitrag zur Zukunftssicherung erwarten. (orig.)

  7. State Clean Energy Practices: Renewable Energy Rebates

    Energy Technology Data Exchange (ETDEWEB)

    Lantz, E.; Doris, E.

    2009-03-01

    This report functions as a primer for renewable energy rebate programs. It highlights the impacts of specific renewable energy rebate programs on renewable energy markets around the country, as well as rebate program impacts on overarching energy policy drivers. It also discusses lessons learned, challenges, ideal applications, keys to success, and complementary and alternative policies. Results indicate that rebate programs can have a strong deployment impact on emerging renewable energy markets. This report focuses on renewable energy rebate programs, which are being analyzed as part of the State Clean Energy Policies Analysis (SCEPA) project. SCEPA is being used to quantify the impacts of existing state policies, and to identify crucial policy attributes and their potential applicability to other states.

  8. State Clean Energy Practices. Renewable Energy Rebates

    Energy Technology Data Exchange (ETDEWEB)

    Lantz, Eric [National Renewable Energy Lab. (NREL), Golden, CO (United States); Doris, Elizabeth [National Renewable Energy Lab. (NREL), Golden, CO (United States)

    2009-03-01

    This report functions as a primer for renewable energy rebate programs. It highlights the impacts of specific renewable energy rebate programs on renewable energy markets around the country, as well as rebate program impacts on overarching energy policy drivers. It also discusses lessons learned, challenges, ideal applications, keys to success, and complementary and alternative policies. Results indicate that rebate programs can have a strong deployment impact on emerging renewable energy markets. This report focuses on renewable energy rebate programs, which are being analyzed as part of the State Clean Energy Policies Analysis (SCEPA) project. SCEPA is being used to quantify the impacts of existing state policies, and to identify crucial policy attributes and their potential applicability to other states.

  9. Western Energy Corridor -- Energy Resource Report

    Energy Technology Data Exchange (ETDEWEB)

    Leslie Roberts; Michael Hagood

    2011-06-01

    The world is facing significant growth in energy demand over the next several decades. Strategic in meeting this demand are the world-class energy resources concentrated along the Rocky Mountains and northern plains in Canada and the U.S., informally referred to as the Western Energy Corridor (WEC). The fossil energy resources in this region are rivaled only in a very few places in the world, and the proven uranium reserves are among the world's largest. Also concentrated in this region are renewable resources contributing to wind power, hydro power, bioenergy, geothermal energy, and solar energy. Substantial existing and planned energy infrastructure, including refineries, pipelines, electrical transmission lines, and rail lines provide access to these resources.

  10. Energy planning and energy efficiency assistance

    Energy Technology Data Exchange (ETDEWEB)

    Markel, L. [Electrotek Concepts, Inc., Knoxville, TN (United States)

    1995-12-31

    Electrotek is an engineering services company specializing in energy-related programs. Clients are most utilities, large energy users, and the U.S. Electric Power Research Institute. Electrotek has directed energy projects for the U.S. Agency for International Development and the U.S. Department of Energy in Poland and other countries of Central Europe. The objective is to assist the host country organizations to identify and implement appropriate energy efficiency and pollution reduction technologies, to transfer technical and organizational knowledge, so that further implementations are market-driven, without needed continuing foreign investment. Electrotek has worked with the Silesian Power Distribution Company to design an energy efficiency program for industrial customers that has proven to be profitable for the company and for its customers. The program has both saved energy and costs, and reduced pollution. The program is expanding to include additional customers, without needing more funding from the U.S. government.

  11. Alcohol Energy Drinks

    Science.gov (United States)

    ... Home / About Addiction / Alcohol / Alcohol Energy Drinks Alcohol Energy Drinks Read 24018 times font size decrease font size increase font size Print Email Alcohol energy drinks (AEDs) or Caffeinated alcoholic beverages (CABs) are ...

  12. The energy report

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-12-23

    The Energy Report aims to be an essential source of information about the UK energy scene, setting out key elements of energy policy and the main driving forces and events, both internal and external to the UK. Chapter headings are: forward and main events of 1998/99; energy policy and related initiatives; environmental and international issues; energy demand and energy efficiency; fuel poverty; gas supply; electricity; nuclear; new and renewable sources of energy; coal; oil and gas production; and downstream oil. Papers by the Engineering Advisory Panel are included. Appendices include tables relating to the production, supply, demand and prices of energy in the United Kingdom and energy-related atmospheric emissions. The report has been formerly published as Volume 1 of the Energy Report. Purchasers also receive an 84-page booklet entitled 'UK energy sector indicators 1999' and a leaflet 'UK energy in brief' (issued separately free of charge).

  13. Energy in Sweden 1997

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1997-09-01

    Statistical data on supply and consumption of energy are presented together with information on the current energy situation, developments in energy use and supply, prices and environmental data. International aspects are also treated

  14. Energy for Mankind

    Science.gov (United States)

    Pincherle, L.; Rice-Evans, P.

    1977-01-01

    Discusses statistics concerning world energy requirements and supplies of different types of fuels. Also discusses the storage and transmission of energy and pollution problems related to energy utilization. (MLH)

  15. Energy in Sweden 2000

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2001-01-01

    Statistical data on supply and consumption of energy are presented together with information on the current energy situation, developments in energy use and supply, prices and environmental data. International aspects are also treated.

  16. Energy in Sweden 1999

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1999-11-01

    Statistical data on supply and consumption of energy are presented together with information on the current energy situation, developments in energy use and supply, prices and environmental data. International aspects are also treated.

  17. 75 FR 30014 - Office of Energy Efficiency and Renewable Energy; Energy Efficiency and Conservation Block Grant...

    Science.gov (United States)

    2010-05-28

    ... of Energy Efficiency and Renewable Energy; Energy Efficiency and Conservation Block Grant Program AGENCY: Office of Energy Efficiency and Renewable Energy, Department of Energy. ACTION: Notice. SUMMARY... Efficiency and Renewable Energy (EERE), has experienced historic growth and unprecedented workload...

  18. Factors and uncertainties in the profitability of using nuclear energy in desalination of water; Facteurs et incertitudes de la rentabilite du recours a l'energie nucleaire dans le dessalement des eaux

    Energy Technology Data Exchange (ETDEWEB)

    Thiriet, L.; Lievre, P. [Commissariat a l' Energie Atomique, Fontenay-aux-Roses (France). Centre d' Etudes Nucleaires

    1969-07-01

    One of the economic advantages of nuclear energy consists of the small proportional element in its cost structure. Economies of scale favour the nuclear station as compared with the conventional thermal one, and when the demand for electricity and heat, in particular for desalination, are sufficient, nuclear energy may, subject to certain conditions, prove advantageous. The object of this paper is to discuss the validity of the conclusions reached according to the hypotheses adopted. In the first part, the different kind of uncertainties connected with technical, economic and financial data (the various transmission coefficients, the life of equipment according to the choice of materials, changes in prices, the form of price functions and interest rates), and with the various constraints, are examined and discussed. In the second part the uncertainties connected with the method of optimisation used and the criterion of selection adopted are examined and discussed. It is shown thereby that it is usually extremely difficult to assume absolutely the competitiveness, or conversely the non-competitiveness, of using nuclear energy in the desalination of water, and that a large number of aspects have to be carefully examined. (author) [French] On sait que l'un des avantages economiques de l'energie nucleaire reside dans la faible part proportionnelle dans la structure de son cout. Les economies d'echelle favorisent le nucleaire par rapport au thermique classique, et lorsque les demandes d'electricite et de chaleur, notamment pour le dessalement, sont suffisantes on peut envisager favorablement, sous certaines hypotheses, le recours a l'energie nucleaire. L'objet de cette communication est de discuter la validite des conclusions auxquelles on parvient selon les hypotheses envisagees. Dans une premiere partie, on etudie et on discute les differentes sortes d'incertitudes, liees aux donnees techniques, economiques et financieres (les divers

  19. Energy, Economics & Environment

    OpenAIRE

    David James

    1997-01-01

    Energy-economic-environment (EEE) interactions can be expected to play a crucial role in the development process. Energy is a critical resourced underpinning economic growth. Countries in SE Asia have reached different levels of economic welfare, and this is reflected in their energy use patterns. Some of the countries are well endowed with energy resources - to the extent of being major exporters of energy. Others face serious poverty, accompanied by low levels of energy use. To achieve impr...

  20. Transitions in Energy Use

    OpenAIRE

    Grubler, A.

    2004-01-01

    Patterns of energy use have changed dramatically since the onset of the industrial revolution in terms of both energy quantities and energy quality. These changing patterns of energy use, where energy quantities and quality interact in numerous important ways, are referred to in this article as energy transitions and are described from a historical perspective as well as through future scenarios. Far from being completed, many of these transitions are continuing to unfold in industrial and de...