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Sample records for hydrogen jean dhers

  1. Ten questions on hydrogen Jean Dhers

    International Nuclear Information System (INIS)

    2005-01-01

    The author proposes explanations and comments on the use of hydrogen in energy production. He discusses whether hydrogen can be a new energy technology within the context of a sustainable development, whether hydrogen is actually an energy vector, what would be the benefits of using hydrogen in energy applications, why it took so much time to be interested in hydrogen, when the hydrogen vector will be needed, whether we can economically produce hydrogen to meet energy needs (particularly in transports), whether hydrogen is the best suited energy vector for ground transports in the future, how to retail hydrogen for ground transports, what are the difficulties to store hydrogen for ground transport applications, and how research programs on hydrogen are linked together

  2. Post-Newtonian Jeans Analysis

    International Nuclear Information System (INIS)

    Nazari, Elham; Kazemi, Ali; Roshan, Mahmood; Abbassi, Shahram

    2017-01-01

    The Jeans analysis is studied in the first post-Newtonian limit. In other words, the relativistic effects on local gravitational instability are considered for systems whose characteristic velocities and corresponding gravitational fields are higher than those permitted in the Newtonian limit. The dispersion relation for the propagation of small perturbations is found in the post-Newtonian approximation using two different techniques. A new Jeans mass is derived and compared to the standard Jeans mass. In this limit, the relativistic effects make the new Jeans mass smaller than the Newtonian Jeans mass. Furthermore, the fractional difference between these two masses increases when the temperature/pressure of the system increases. Interestingly, in this limit, pressure can enhance gravitational instability instead of preventing it. Finally, the results are applied to high-temperature astrophysical systems, and the possibility of local fragmentation in some relativistic systems is investigated.

  3. Post-Newtonian Jeans Analysis

    Energy Technology Data Exchange (ETDEWEB)

    Nazari, Elham; Kazemi, Ali; Roshan, Mahmood; Abbassi, Shahram, E-mail: mroshan@um.ac.ir [Department of Physics, Ferdowsi University of Mashhad, P.O. Box 1436, Mashhad (Iran, Islamic Republic of)

    2017-04-20

    The Jeans analysis is studied in the first post-Newtonian limit. In other words, the relativistic effects on local gravitational instability are considered for systems whose characteristic velocities and corresponding gravitational fields are higher than those permitted in the Newtonian limit. The dispersion relation for the propagation of small perturbations is found in the post-Newtonian approximation using two different techniques. A new Jeans mass is derived and compared to the standard Jeans mass. In this limit, the relativistic effects make the new Jeans mass smaller than the Newtonian Jeans mass. Furthermore, the fractional difference between these two masses increases when the temperature/pressure of the system increases. Interestingly, in this limit, pressure can enhance gravitational instability instead of preventing it. Finally, the results are applied to high-temperature astrophysical systems, and the possibility of local fragmentation in some relativistic systems is investigated.

  4. Ten questions to Jean Dhers on the storage of electric energy

    International Nuclear Information System (INIS)

    2006-01-01

    The authors proposes a comprehensive set of technical and economical data and information on electricity storage: the reasons to store energy (autonomous, stationary and network applications), the different types and advantages of energy storages with reversible power, the means to massively store electricity to exploit in on the network (description, uses and comparison of pumping energy transfer station, energy storage under the form of compressed air), the inertial storage (storage of kinetic energy accumulated in a flywheel, and its applications), the importance of storage with electrochemical batteries (reversible storage, evolution of batteries in ground transports, main economic sectors for batteries), fuel cells, the role of energy storage by power capacitors, the perspectives of super capacitors in a near future (comparison of their performance with those of batteries, possible applications), the use of electromagnetic storage of electricity (description, advantages, drawbacks and applications of superconducting magnet energy storage or SMES), and how the research on electric power storage is organised

  5. On the Jeans criterion

    International Nuclear Information System (INIS)

    Whitworth, A.P.

    1980-01-01

    The Jeans criterion is first stated and distinguished from the Virial Theorem. Then it is discussed how the Jeans criterion can be derived from the Virial Theorem and the inherent shortcomings in this derivation. Finally, it is indicated how these shortcomings might be overcome. The Jeans criterion is a fragmentation - or condensation -criterion. An expression is given, connecting the fragmentation of an unstable extended medium into masses Msub(J). Rather than picturing the background medium fragmenting, it is probably more appropriate to envisage these masses Msub(J) 'condensing' out of the background medium. On the condensation picture some fraction of the background material separates out into coherent bound nodules under the pull of its self-gravity. For this reason the Jeans criterion is discussed as a condensation condition, reserving the term fragmentation for a different process. The Virial Theorem provides a contraction criterion. This is described with reference to a spherical cloud and is developed to derive the Jeans criterion. (U.K.)

  6. Homage to Jean Teillac

    International Nuclear Information System (INIS)

    Matteoli, J.; Dermagne, J.; Rouvillois, Ph.; Baleras, R.; Dautray, R.; Detraz, C.; Yoccoz, J.; Curien, H.; Rebut, P.H.; Caristan, Y.; Wallard, H. E.

    1997-01-01

    On the 10 November 1994 has taken place, to the 'Conseil economique et social', a ceremony in homage to the professor Jean Teillac, organized by: the' Conseil economique et social' (the president Jean Matteoli) the'Commissariat a l'energie atomique' (the general Administrator Philippe Rouvillois, the High - Commissioner Robert Dautray) The National center of the scientific research(CNRS) the national physics institute of particles (the Director Claude Detraz) The University of Pierre et Marie Curie Paris 6 (the President Jean-Claude Legrand). (N.C.)

  7. Jean-Anthelme Brillat-Savarin

    DEFF Research Database (Denmark)

    Fisker, Anna Marie; Jørgensen, René Langdahl

    Pixiebog til undervisning ifm. sommerskole afholdt af Center for Food Science, Design and Experience, august 2010. Forfatteren og gastronomen Jean-Anthelme Brillat-Savarin.......Pixiebog til undervisning ifm. sommerskole afholdt af Center for Food Science, Design and Experience, august 2010. Forfatteren og gastronomen Jean-Anthelme Brillat-Savarin....

  8. Homage to Jean Roche

    CERN Multimedia

    2010-01-01

    It was with deep sadness that we learnt that Jean Roche had died. Jean was one of those quietly efficient and conscientious pillars of our community who beaver away unobtrusively for decades and make such a contribution to building CERN. An expert in thermal engineering, he left his mark on many buildings on the Meyrin and Prévessin sites. At the time of the LEP project at the beginning of the 1980s he was in charge of defining the principles of the ventilation systems for the new accelerator. Through his design studies and the calls for tenders that he launched, he developed these high-performance state-of-the-art installations which not only made LEP’s successes possible but also served as benchmarks for the fundamental principles underpinning the design of the LHC ventilation system. Jean always liked to surround himself with young people and during the years of his stewardship the design office was a splendid training ground. Despite his responsibilities, Jean was always keen t...

  9. Jean-Marie Dufour 1937-2007

    CERN Multimedia

    2007-01-01

    Jean-Marie Dufour, who was head of the CERN Legal Service from 1974 until his retirement in 2001, passed away on 8 July. Following his arrival at CERN in 1966 during the crucial phase of expansion of the Laboratory’s site, Jean-Marie Dufour ensured that CERN’s rules were applied while taking part in essential stages of the Organization’s development. With his fine mind and erudition, Jean-Marie Dufour, a staunch European devoted to the CERN cause, has left his mark on the Legal Service. The Service will publish a tribute to him in a forthcoming issue of the Bulletin.

  10. Jean Gervaise 1921 -2007

    CERN Multimedia

    2007-01-01

    Jean Gervaise, a pioneer of metrology at CERN, passed away on 10 April. A French geodesist, he was behind the creation and development of CERN's metrology group and was a consistently fervent advocate of innovation to meet the increasingly demanding alignment needs of the accelerators and detectors. Under his leadership, metrology at CERN acquired international renown. Jean Gervaise taking measurements with invar wire and a theodolite on a pillar at the PS. In spite of the disruptions caused by the second world war, Jean Gervaise was able to complete an engineering degree at the Ecole nationale des Sciences géographiques in Paris, which led to a first job in the prestigious Geodesy Department of the Institut géographique national (IGN). This 'queen of disciplines', as he called it, is the most scientific and most complex of the branches of cartography, offering opportunities for exciting and varied - sometimes highly adventurous - missions at home and abroad. The rich experience he acquired here helped to...

  11. Jeans instability in a quantum dusty magnetoplasma

    International Nuclear Information System (INIS)

    Salimullah, M.; Jamil, M.; Shah, H. A.; Murtaza, G.

    2009-01-01

    Jeans instability in a homogeneous cold quantum dusty plasma in the presence of the ambient magnetic field and the quantum effect arising through the Bohm potential has been examined using the quantum magnetohydrodynamic model. It is found that the Jeans instability is significantly reduced by the presence of the dust-lower-hybrid wave and the ion quantum effect. The minimum wavenumber for Jeans stability depends clearly on ion quantum effect and the dust-lower-hybrid frequency also.

  12. We’re all behind you, Jean-Yves!

    CERN Multimedia

    Laëtitia Pedroso

    2010-01-01

    Jean-Yves Le Meur, developer of the CERN Document Server (CDS) which manages the Organization’s electronic archives, is about to take part in his third Paralympic Winter Games in Vancouver. Don’t miss him on TV from 15th March onwards !   Jean-Yves, second from the right, participates in a five-day IT training programme in Rwanda. Jean-Yves Le Meur won his place in the 14-strong “Team France” (11 men and 3 women) that will compete at the 2010 Paralympic Winter Games in Vancouver via the qualifying events held in Austria and Italy in 2009. “It was really tough to get selected this time round. You either had to make a top-three finish in a World Cup event or win gold at the European Cup”, says Jean-Yves.     Jean-Yves will be competing in four alpine skiing events: the "Super G" (Super Giant Slalom), the Super Combined Slalom, the Giant Slalom and the Slalom. And given his good performances in ...

  13. Relationship between the Physical Properties and Hand of Jean Fabric

    Directory of Open Access Journals (Sweden)

    Kawamura Atsushi

    2016-09-01

    Full Text Available We investigated the distinctive characteristics of jean fabrics (denim fabrics obtained from jeans and compared the physical properties and the hand. We used 13 kinds of jean fabric from commercial jeans and 26 other fabric types. The physical properties were measured using the Kawabata evaluation system, and the fabric hand was evaluated by 20 subjects using a semantic differential method. To characterise the hand of jean fabrics compared with other fabrics, we used principal component analysis and obtained three principal components. We found that jean fabrics were characterised by the second principal component, which was affected by feelings of thickness and weight. We further characterised the jean fabrics according to ‘softness & smoothness’ and ‘non-fullness’, depending on country of origin and type of manufacturer. The three principal components were analysed using multiple linear regression to characterise the components according to the physical properties. We explained the hand of fabrics including jean fabrics using its association with physical properties.

  14. Janus faces of Jeans instabilities

    International Nuclear Information System (INIS)

    Verheest, Frank; Jacobs, Gerald; Cadez, Vladimir M.

    2000-01-01

    Self-gravitating clouds have been shown by Jeans to be unstable to harmonic perturbations whose wavelength exceeds some critical value involving the mass density and some thermal velocity or equivalent information. Based upon the assumption that the unperturbed cloud is initially uniform, the Jeans instability is non-oscillatory and purely growing. However, Newtonian gravitation precludes strictly homogeneous equilibria, but a way out is offered, in theory, by considering local perturbations, small compared to the inhomogeneity scale lengths. While in itself plausible, this procedure can in most cases not be tested for internal consistency, because real knowledge about the equilibrium is lacking, and is therefore called the Jeans swindle. The severe limitations of such an approach lead to an unavoidable dichotomy, and an example of a plasma will be discussed where the computations can be done explicitly, both for the stationary as well as for the perturbed state, showing that the system is stable at all wavelengths compatible with the equilibrium inhomogeneity. Nevertheless, the present state of affairs does not allow self-consistent equilibria to be worked out in more complicated configurations, like in dusty plasmas with external magnetic fields. This typically leads to the Jeans swindle being used a little longer than desirable

  15. A pedagogical look at Jeans' density scale

    International Nuclear Information System (INIS)

    Chu, K-H W

    2007-01-01

    We illustrate the derivations of Jeans' criteria for the gravitational instabilities in a static homogeneous Newtonian system for pedagogical objectives. The critical Jeans density surface is presented in terms of dimensionless sound speeds and (characteristic) length scales

  16. Jean-Jacques Petter. Primates

    Directory of Open Access Journals (Sweden)

    Bruno Simmen

    2010-12-01

    Full Text Available Voici un magnifique ouvrage grand format sur les Primates dont l’auteur principal est le regretté Jean Jacques Petter, l’un des spécialistes historiques des prosimiens de Madagascar. Ce livre, publié à titre posthume, a une histoire que nous découvrons dans la préface d’Yves Coppens. A l’origine pensé et rédigé par Jean-Jacques Petter, qui a été professeur au Muséum National d’Histoire Naturelle, l’ouvrage interrompu à sa mort en 2002 a été remis en chantier sous l’impulsion de sa femme Arlet...

  17. Jean Bodin

    DEFF Research Database (Denmark)

    Harste, Gorm

    2009-01-01

    Jean Bodin (1530 - 1596) skabte teorien om statens suverænitet. Staten er indplaceret på et niveau mellem lokale  domstole og pave/kejser. Grunden til at staten kan få en permanent status er, at den netop på Bodins tid udstyrerede sig som en etat med en hierarikisk opbygget centraladministration...

  18. Jean-Marie Dufour 1937-2007

    CERN Multimedia

    2007-01-01

    Picture taken by Rudiger Voss in the Legal Service LibraryJean-Marie Dufour, CERN Legal Advisor from 1974 until his retirement in 2001, passed away on 8 July. For us, his colleagues in the Legal Service, Jean-Marie was a tutor and a reference, who passed on to us his passion for the practice of law in an intergovernmental organisation. As a boss, his abiding managerial quality was his unstinting loyalty to his collaborators. Jean-Marie joined CERN in 1966 and for the next 35 years was to be the guardian of the Laboratory’s rules. This was his view of the Organization: "...I have discovered [at CERN] a fascinating universe driven by two forces: science and Europe; a world of physicists and engineers who, encouraged by the States of Europe, run a remarkable Laboratory, where Europeans have achieved reconciliation and restored the grand tradition of European physics, attracting physicists from around the world; a Laboratory that transcends not only the fro...

  19. Jeans instability of self-gravitating magnetized strongly coupled plasma

    International Nuclear Information System (INIS)

    Prajapati, R P; Sharma, P K; Sanghvi, R K; Chhajlani, R K

    2012-01-01

    We investigate the Jeans instability of self-gravitating magnetized strongly coupled plasma. The equations of the problem are formulated using the generalized hydrodynamic model and a general dispersion relation is obtained using the normal mode analysis. This dispersion relation is discussed for transverse and longitudinal mode of propagations. The modified condition of Jeans instability is obtained for magnetized strongly coupled plasma. We find that strong coupling of plasma particles modify the fundamental criterion of Jeans gravitational instability. In transverse mode it is found that Jeans instability criterion gets modified due to the presence of magnetic field, shear viscosity and fluid viscosity but in longitudinal mode it is unaffected due to the presence of magnetic field. From the curves we found that all these parameters have stabilizing influence on the growth rate of Jeans instability.

  20. Jean-Yves Hemery

    CERN Multimedia

    CERN Bulletin

    2010-01-01

    The family, friends and colleagues of Jean-Yves HEMERY are sad to announce his accidental death on 24 September, at the age of 63, in Priziac. A funeral service has already taken place in his native region of Brittany and a commemoration will be held at the Mairie de Cessy, on Tuesday 12 October at 1.30 p.m., prior to the burial at the cemetery. Jean-Yves joined CERN in 1973 and worked first at the ISR for ten years and then on the beam instrumentation at LEP. The last twelve years of his career were his most fulfilling as he did great work on the beam design for the LEAR facility at the PS. Since retiring in 2007 his main occupation had been the renovation of his small house in Brittany. His Family and friends

  1. Jean Comandon Neuroscientist.

    Science.gov (United States)

    Lorusso, Lorenzo; Lefebvre, Thierry; de Pastre, Béatrice

    2016-01-01

    The microbiologist Jean Comandon is famous for his studies on the movement of the syphilis bacteria as differentiated in various forms by ultramicroscope. He was also a pioneer on the technical application of the microcinematography in laboratory research. His collaboration with clinicians and surgeons in the study of various pathological disorders is little known. From 1918 to the 1920s, he collaborated with such neurologists as André Thomas, Jean Athanase Sicard, and others in the study of various neurological disorders by using cinematography as a scientific tool for understanding the clinical and pathological mechanisms of diseases. These collaborations allowed him to be involved in the beginnings of the French cinematography industry, especially with Charles Pathé who established a small film studio laboratory in Vincennes where a multidisciplinary group improved the application of cinematography in clinical medical practice.

  2. Eneseotsingutee / Jean-Charles Hue ; intervjueerinud Reet Varblane

    Index Scriptorium Estoniae

    Hue, Jean-Charles, 1968-

    2011-01-01

    Tallinna Kunstihoone galeriis on 12. juunini 2011 vaadata prantsuse videokunstniku Jean-Charles Hue' näitus "Tattoo Fight" ("Tätorebimine"), kuraator Harry Liivrand. Kunstnikust, kelle emapoolsed sugulased on Prantsusmaa mustlased ehk yéniche'id. Jean-Charles Hue yéniche'itest, nende olukorrast Prantsusmaal, oma loomingust, pikemalt mustlaste teema käsitlemisest

  3. Spécificité pastorale de la personnalité de Jean-Paul II selon Jean-Marie Lustiger

    Directory of Open Access Journals (Sweden)

    Ryszard Biernat

    2011-04-01

    Full Text Available Jean-Marie Lustiger admired John Paul II and he was devoted to him. They both had similar origin. The Cardinal of Paris often accompanied the pope in his pastoral visits. He perceived John Paul II as the man of Providence. He was convinced that God had prepared him to this role. Jean-Marie Lustiger emphasized the attitudes of John Paul II that attracted the attention and admiration of observers. For instance: pray, holiness, attentive pastor and good relation with young people. Jean-Marie Lustiger as an attentive observer also focused his attention on the pastoral methods of John Paul II. In his utterances he often perceived the following methods: each person was important, defense of person’s dignity, the ability to speak with each man, modern language, importance of the pastoral visits and sui generis spiritual pedagogic. Jean-Marie Lustiger noticed radical change of perspective in preaching and in pastoral action of John Paul II. According to him the pope perceived the challenges of the modern times, evaluated needs of the humanity and gave the appropriate answers. For these he did not choose politics, sociology or even anthropology as a re fl ection but addressed to the hurt human who was redeem by Jesus Christ.

  4. New aspects of the Jeans instability in dusty plasmas

    International Nuclear Information System (INIS)

    Verheest, Frank; Hellberg, Manfred A; Mace, Richard L

    1998-01-01

    In contrast to a gas, a dusty plasma can support a variety of wave modes each in principle able to impart to the dust grains the randomizing energy necessary to avoid Jeans collapse on some length scale. Consequently, the stability to Jeans collapse is more complex in a dusty plasma than it is for a charge-neutral gas. After recalling some of the fundamental ideas related to the ordinary Jeans instability in neutral gases, we will extend the discussion to plasmas containing charged dust grains. Besides the usual Jeans criterion based upon thermal agitation, various other ways of countering the gravitational collapse can be considered. One is via excitation of electrostatic dust-acoustic modes, the other via novel Alfven-Jeans instabilities for perpendicularly propagating electromagnetic waves on the extraordinary mode branch. The wavelengths that are unstable are modified due to the presence of a magnetic field and of charged particles. These mechanisms yield different minimum threshold length scales for the onset of instability/condensation

  5. Farewell Jean-Marie Good Luck Eva Welcome back Franz

    CERN Multimedia

    2001-01-01

    At the farewell reception offered by the Director-General, Professor Luciano Maiani, on the occasion of Jean-Marie Dufour's retirement from CERN, three generations of CERN Legal Counsel met. From right to left: Jean-Marie Dufour, who retires on 30 November 2001, after 35 years of service. Eva-Maria Gröniger-Voss, who takes over from Jean-Marie Dufour on 1st December 2001. Ambassador Franz Schmid, CERN Legal Counsel from 1971 to 1974.

  6. Jean-Pierre Brans

    DEFF Research Database (Denmark)

    Brugha, Cathal Macswiney; Krarup, Jakob

    2017-01-01

    , OR gradually became a field with widespread applications, an academic discipline, and a field with its own institutions. The pioneers who paved the road deserve to be both identified and honoured. We present here a profile of Jean-Pierre Brans (born 1937), highly esteemed for his scientific achievements...

  7. Jean Nouveli supermodernism Barcelonas / Raili Seppänen

    Index Scriptorium Estoniae

    Seppänen, Raili

    2005-01-01

    2005. a. suvel valmivast prantsuse arhitekti Jean Nouveli (sünd. 1945) projekteeritud tornmajast Torre Agbar Barcelonas Avinguda Diagonal 209-211. Abiks hispaania arhitekt Fermin Vazquez arhitektibüroost b720 Arquitectura S.L. Jean Nouveli tuntud projekte. Ill.: J. Nouveli portreefoto, tornmaja välisvaade

  8. Jeans and Means

    Indian Academy of Sciences (India)

    Home; Journals; Resonance – Journal of Science Education; Volume 1; Issue 8. Jeans and Means - The Story of Indigo. Subramania Ranganathan. Series Article Volume 1 Issue 8 August 1996 pp 22-27. Fulltext. Click here to view fulltext PDF. Permanent link: https://www.ias.ac.in/article/fulltext/reso/001/08/0022-0027 ...

  9. Jean Baptiste Joseph Fourier

    Science.gov (United States)

    Sterken, C.

    2003-03-01

    This paper gives a short account of some key elements in the life of Jean Baptiste Joseph Fourier (1768-1830), specifically his relation to Napoleon Bonaparte. The mathematical approach to Fourier series and the original scepticism by French mathematicians are briefly illustrated.

  10. Jean Piaget' teos mõttestruktuuridest

    Index Scriptorium Estoniae

    2002-01-01

    TPÜ kasvatusteaduste teaduskond esitles 29. okt. 2002.a. Šveitsi psühholoogi Jean Piaget' ja Alina Szeminska teost "Arvumõiste kujunemine lapsel". Kommenteerib TPÜ psühholoogiaprofessor Voldemar Kolga

  11. 'STARLESS' SUPER-JEANS CORES IN FOUR GOULD BELT CLOUDS

    International Nuclear Information System (INIS)

    Sadavoy, Sarah I.; Di Francesco, James; Johnstone, Doug

    2010-01-01

    From a survey of 729 cores based on JCMT/SCUBA data, we present an analysis of 17 candidate starless cores with masses that exceed their stable Jeans masses. We re-examine the classification of these super-Jeans cores using Spitzer maps and find that 3 are re-classified as protostellar, 11 have ambiguous emission near the core positions, and 3 appear to be genuinely starless. We suggest that the 3 starless and 11 undetermined super-Jeans cores represent excellent targets for future observational and computational study to understand the evolution of dense cores and the process of star formation.

  12. Ajalool on ajaloolaste nägu / Jean-Claude Schmitt ; interv. Marek Tamm

    Index Scriptorium Estoniae

    Schmitt, Jean-Claude

    2004-01-01

    Intervjuu ajaloolase Jean-Claude Schmittiga. Ilm. ka: Keha, pilt ja unenägu : intervjuu Jean-Claude Scmittiga // Schmitt, Jean-Claude. Püha hurdakoer : Guinefort - lasteravija 13. sajandist. - Tallinn, 2000. - Lk. 296-305 ; Kuidas kirjutatakse ajalugu? // Tamm, Marek. Kuidas kirjutatakse ajalugu? - Tallinn, 2007. - 161-177

  13. In memory of Jean-François Stéphan

    Science.gov (United States)

    Blanchet, René

    2016-01-01

    This thematic issue of Comptes rendus Geoscience has been assembled to honor the memory of our late colleague and friend Jean-François Stéphan, whose remarkable scientific and community-directed activity has left a deep imprint on both the French and the International Earth Science communities. This volume brings together contributions of colleagues of Jean-François who were also close friends. Naturally, tectonics is the common theme of these contributions. Some of the papers presented here focus on tectonic questions and/or regions Jean-François worked on during his career; other papers present studies Jean-François motivated or encouraged in one way or another. Taken together, the papers of this thematic issue take the reader on a beautiful trip, from past to current tectonics.

  14. Jean Picard og Ole Rømer på Hven

    DEFF Research Database (Denmark)

    Pedersen, Kurt Møller

    2011-01-01

    Jean Picards rejse til Hven og København i 1671/72 for at bestemme længdeforskellen mellem Tycho Brahes observatorier og observatoriet i Paris.......Jean Picards rejse til Hven og København i 1671/72 for at bestemme længdeforskellen mellem Tycho Brahes observatorier og observatoriet i Paris....

  15. Effect of polarization force on the Jeans instability of self-gravitating dusty plasma

    International Nuclear Information System (INIS)

    Prajapati, R.P.

    2011-01-01

    The effect of polarization force acting on massive charged dust grains is investigated analytically on the Jeans instability of self-gravitating dusty plasma. The gravitational force acting on the massive negatively charged interstellar dust grains are considered in presence of both electrical and polarization forces. The basic equations of the problem are formulated and a general dispersion relation is obtained using plane wave approximation in low frequency wave mode. The effect of polarization force in the dispersion relation of the problem, condition of the Jeans instability and expression of the critical Jeans wave number is examined. The unstable growing modes due to self-gravitational force are studied in the situation when polarization force on the dust grain exceeds over the electrical force in magnitude. It is observed that the polarization force increases the growth rate of the system. -- Highlights: → Jeans instability of gravitating dusty plasma with polarization force is investigated. → The fundamental Jeans instability criterion is modified due to polarization effect. → The critical Jeans length decreases due to increase in polarization force. → Polarization force destabilizes the unstable Jeans mode. → The collapsing of interstellar dusty cloud is discussed.

  16. Jean Francheteau (1943-2010)

    Science.gov (United States)

    Sclater, John; Le Pichon, Xavier

    2010-12-01

    Jean Francheteau, pioneering marine geologist and geophysicist, AGU Fellow, and emeritus professor at the University of Brest (Université de Bretagne Occidentale), died on 21 July in St-Renan, Brittany, France, at the age of 67 after a long illness. With his passing, the field of Earth sciences lost a major contributor to the development of a definitive theory of plate tectonics and one of the first to make visual geological observations on the deep seafloor. Such scientific accomplishments, coupled with his personal charm and the ability to collaborate with researchers from many institutions, ensured that he had a huge influence not only on the world of research but also on teaching and the application of ethics to science. Jean arrived at Scripps Institution of Oceanography in La Jolla, Calif., in 1966 after obtaining a diploma in mining engineering at the prestigious Éole Nationale Supérieure de la Métallurgie et de l'Industrie des Mines in Nancy, France. He chose Victor Vacquier as his thesis supervisor and began working in Vic's lab with John Sclater, ostensibly on heat flow measurements.

  17. Kinetic theory of Jeans instability

    NARCIS (Netherlands)

    Trigger, S.A.; Ershkovic, A.I.; Heijst, van G.J.F.; Schram, P.P.J.M.

    2004-01-01

    Kinetic treatment of the Jeans gravitational instability, with collisions taken into account, is presented. The initial-value problem for the distribution function which obeys the kinetic equation, with the collision integral conserving the number of particles, is solved. Dispersion relation is

  18. Writings and correspondence: 1961-1985: Hubert Damisch and Jean Dubuffet

    NARCIS (Netherlands)

    Berrebi, S.

    2015-01-01

    This dossier comprises a selection of the correspondence between Hubert Damisch and Jean Dubuffet as well as six essays written by Damisch on Dubuffet between 1962 and 1985. Both the correspondence and texts are here published in English for the first time. "Jean Dubuffet and the Awakening of

  19. Jean-Marie Dufour receives the Legion of Honour

    CERN Multimedia

    2001-01-01

    French Ambassador Philippe Petit (left) presents the cross of Knight of the Légion d'Honneur to Jean-Marie Dufour. On Friday 22 June, Jean-Marie Dufour, Head of CERN's Legal Service, was made Knight of the Legion of Honour by Ambassador Philippe Petit, at a ceremony held at the Permanent Mission of France in Geneva. Ambassador Petit is Permanent Representative of France at the United Nations and French delegate at CERN. He was awarded the decoration in recognition of his services. He has played an active part in all the great stages of CERN's development, in fact, ranging from its scientific programmes, to its establishment in its Host States, Switzerland and France, and its opening up to the wider world. The ceremony took place in the presence of Professor Luciano Maiani. The award is an honour to CERN, and the Organization takes this opportunity to convey its friendliest congratulations to Jean-Marie Dufour, a committed European.

  20. Jeans' criterion and nonextensive velocity distribution function in kinetic theory

    International Nuclear Information System (INIS)

    Du Jiulin

    2004-01-01

    The effect of nonextensivity of self-gravitating systems on the Jeans' criterion for gravitational instability is studied in the framework of Tsallis statistics. The nonextensivity is introduced in the Jeans problem by a generalized q-nonextensive velocity distribution function through the equation of state of ideal gas in nonextensive kinetic theory. A new Jeans' criterion is deduced with a factor √(2/(5-3q)) that, however, differs from that one in [Astron. Astrophys. 396 (2002) 309] and new results of gravitational instability are analyzed for the nonextensive parameter q. An understanding of physical meaning of q and a possible seismic observation to find astronomical evidence for a value of q different from unity are also discussed

  1. THERMALLY DRIVEN ATMOSPHERIC ESCAPE: TRANSITION FROM HYDRODYNAMIC TO JEANS ESCAPE

    International Nuclear Information System (INIS)

    Volkov, Alexey N.; Johnson, Robert E.; Tucker, Orenthal J.; Erwin, Justin T.

    2011-01-01

    Thermally driven escape from planetary atmospheres changes in nature from an organized outflow (hydrodynamic escape) to escape on a molecule-by-molecule basis (Jeans escape) with increasing Jeans parameter, λ, the ratio of the gravitational to thermal energy of the atmospheric molecules. This change is described here for the first time using the direct simulation Monte Carlo method. When heating is predominantly below the lower boundary of the simulation region, R 0 , and well below the exobase of a single-component atmosphere, the nature of the escape process changes over a surprisingly narrow range of Jeans parameters, λ 0 , evaluated at R 0 . For an atomic gas, the transition occurs over λ 0 ∼ 2-3, where the lower bound, λ 0 ∼ 2.1, corresponds to the upper limit for isentropic, supersonic outflow. For λ 0 > 3 escape occurs on a molecule-by-molecule basis and we show that, contrary to earlier suggestions, for λ 0 > ∼6 the escape rate does not deviate significantly from the familiar Jeans rate. In a gas composed of diatomic molecules, the transition shifts to λ 0 ∼ 2.4-3.6 and at λ 0 > ∼4 the escape rate increases a few tens of percent over that for the monatomic gas. Scaling by the Jeans parameter and the Knudsen number, these results can be applied to thermally induced escape of the major species from solar and extrasolar planets.

  2. Jean-Paul Diss (1928-2012)

    CERN Multimedia

    2012-01-01

    We were greatly saddened to learn of the sudden death of Dr Jean-Paul Diss at his home on 7 June 2012.   Jean-Paul studied medicine at the Strasbourg Faculty of Medicine and began his career as an occupational medical practitioner at the Mulhouse potash mines. He then came to CERN in 1965 to set up a Medical Service at the request of the then CERN Director-General, Professor Weisskopf. He was the first person to hold the position of Head of the Medical Service and he invested all his energies to provide the Organization with an occupational healthcare unit worthy of the name. As a pioneer of occupational medicine, he worked tirelessly to improve the working conditions of the members of the personnel and continued to be solicitous about the health of every member of the personnel until his retirement in 1993.  Over the past twenty years, he remained active within the CERN Pensioners Association, in particular as the pensioners’ representative on the CERN Health Insuran...

  3. Effect of magnetic field and radiative condensation on the Jeans instability of dusty plasma with polarization force

    International Nuclear Information System (INIS)

    Prajapati, R.P.

    2013-01-01

    The Jeans instability of self-gravitating dusty plasma with polarization force is investigated considering the effects of magnetic field, dust temperature and radiative condensation. The condition of Jeans instability and expression of critical Jeans wave number are obtained which depend upon polarization force and dust temperature but these are unaffected by the presence of magnetic field. The radiative heat-loss functions also modify the Jeans condition of instability and expression of critical Jeans wave number. It is observed that the polarization force and ratio of radiative heat-loss functions have destabilizing while magnetic field and dust temperature have stabilizing influence on the growth rate of Jeans instability.

  4. Histoire de lÈstonie et de la nation estonienne : Eesti ja eesti rahvuse ajalugu : intervjuu Jean-Pierre Minaudier̀ga / Jean-Pierre Minaudier ; küsitlenud Marek Tamm

    Index Scriptorium Estoniae

    Minaudier, Jean-Pierre

    2008-01-01

    Intervjuu raamatu "Histoire de lÈstonie et de la nation estonienne" autori, prantsuse ajaloolase Jean-Pierre Minaudier̀ga. Raamatututvustus : Minaudier, Jean-Pierre. Histoire de lÈstonie et de la nation estonienne. Paris : L̀Harmattan, 2007 (Bibliothèque finno-ougrienne; 17)

  5. Maison du Peuple; Jean Prouvè

    DEFF Research Database (Denmark)

    Beim, Anne

    2017-01-01

    The chapter presents a deep analysis of Maison du Peuple, de Clichy in Paris by the French architect and manufacturer Jean Prouvè. The historical context of the original ideas behind the building and how and by which means it was constructed are being examined from a tectonic perspective....

  6. Effect of secondary electron emission on the Jeans instability in a dusty plasma

    International Nuclear Information System (INIS)

    Sarkar, Susmita; Roy, Banamali; Maity, Saumyen; Khan, Manoranjan; Gupta, M. R.

    2007-01-01

    In this paper the effect of secondary electron emission on Jeans instability in a dusty plasma has been investigated. Due to secondary electron emission, dust grains may have two stable equilibrium states out of which one is negative and the other is positive. Here both cases have been considered separately. It has been shown that secondary electron emission enhances Jeans instability when equilibrium dust charge is negative. It has also been shown that growth rate of Jeans instability reduces with increasing secondary electron emission when equilibrium dust charge is positive

  7. Jeans instability with exchange effects in quantum dusty magnetoplasmas

    International Nuclear Information System (INIS)

    Jamil, M.; Rasheed, A.; Rozina, Ch.; Jung, Y.-D.; Salimullah, M.

    2015-01-01

    Jeans instability is examined in magnetized quantum dusty plasmas using the quantum hydrodynamic model. The quantum effects are considered via exchange-correlation potential, recoil effect, and Fermi degenerate pressure, in addition to thermal effects of plasma species. It is found that the electron exchange and correlation potential have significant effects over the threshold value of wave vector and Jeans instability. The presence of electron exchange and correlation effect shortens the time of dust sound that comparatively stabilizes the self gravitational collapse. The results at quantum scale are helpful in understanding the collapse of the self-gravitating dusty plasma systems

  8. Jeans instability in collisional strongly coupled dusty plasma with radiative condensation and polarization force

    International Nuclear Information System (INIS)

    Prajapati, R. P.; Bhakta, S.; Chhajlani, R. K.

    2016-01-01

    The influence of dust-neutral collisions, polarization force, and electron radiative condensation is analysed on the Jeans (gravitational) instability of partially ionized strongly coupled dusty plasma (SCDP) using linear perturbation (normal mode) analysis. The Boltzmann distributed ions, dynamics of inertialess electrons, charged dust and neutral particles are considered. Using the plane wave solutions, a general dispersion relation is derived which is modified due to the presence of dust-neutral collisions, strong coupling effect, polarization force, electron radiative condensation, and Jeans dust/neutral frequencies. In the long wavelength perturbations, the Jeans instability criterion depends upon strong coupling effect, polarization interaction parameter, and thermal loss, but it is independent of dust-neutral collision frequency. The stability of the considered configuration is analysed using the Routh–Hurwitz criterion. The growth rates of Jeans instability are illustrated, and stabilizing influence of viscoelasticity and dust-neutral collision frequency while destabilizing effect of electron radiative condensation, polarization force, and Jeans dust-neutral frequency ratio is observed. This work is applied to understand the gravitational collapse of SCDP with dust-neutral collisions.

  9. Correlated Random Systems Five Different Methods : CIRM Jean-Morlet Chair

    CERN Document Server

    Kistler, Nicola

    2015-01-01

    This volume presents five different methods recently developed to tackle the large scale behavior of highly correlated random systems, such as spin glasses, random polymers, local times and loop soups and random matrices. These methods, presented in a series of lectures delivered within the Jean-Morlet initiative (Spring 2013), play a fundamental role in the current development of probability theory and statistical mechanics. The lectures were: Random Polymers by E. Bolthausen, Spontaneous Replica Symmetry Breaking and Interpolation Methods by F. Guerra, Derrida's Random Energy Models by N. Kistler, Isomorphism Theorems by J. Rosen and Spectral Properties of Wigner Matrices by B. Schlein. This book is the first in a co-edition between the Jean-Morlet Chair at CIRM and the Springer Lecture Notes in Mathematics which aims to collect together courses and lectures on cutting-edge subjects given during the term of the Jean-Morlet Chair, as well as new material produced in its wake. It is targeted at researchers, i...

  10. Meeting with Jean-Yves Le Meur, author of "Faux Pas"

    CERN Multimedia

    2008-01-01

    A CERN engineer and an accomplished sportsman, Jean-Yves Le Meur (IT Department) has recently published his first book "Faux pas". Meet him and hear about his exceptional life on 23 April 2008 in the Globe. An accident cost him his legs when he was young, and it was sheer force of character and a passion for the mountains that carried Jean-Yves Le Meur, with one artificial leg and crutches to stay upright, to the very summit of the Mont-Blanc. In his book, Jean-Yves, a computer engineer at CERN, recounts with detachment his personal battle to win back his life and make this impossible ascent. "Faux Pas" depicts a series of encounters and people, and recreates the extreme emotions of a man who reconstructed his life and pushed himself beyond his limits. It is a moving personal account, whose message is universal. The question-and-answer session with the author will be preceded by the projection of "4810M, CAHIN-CAHA",...

  11. Jean Dieudonné (1906-1992) mathematician

    CERN Document Server

    Cartier, P

    2005-01-01

    Jean Dieudonn\\'e has been one of the most influential French mathematicians during the 20$^{\\rm th}$ century, especially through his association -- even identification -- with the Bourbaki group. An excellent biography has been written by his friend P. Dugac, a historian of science [4]. We shall retrace here his long and distinguished career.

  12. The effect of spin induced magnetization on Jeans instability of viscous and resistive quantum plasma

    International Nuclear Information System (INIS)

    Sharma, Prerana; Chhajlani, R. K.

    2014-01-01

    The effect of spin induced magnetization and electrical resistivity incorporating the viscosity of the medium is examined on the Jeans instability of quantum magnetoplasma. Formulation of the system is done by using the quantum magnetohydrodynamic model. The analysis of the problem is carried out by normal mode analysis theory. The general dispersion relation is derived from set of perturbed equations to analyse the growth rate and condition of self-gravitational Jeans instability. To discuss the influence of resistivity, magnetization, and viscosity parameters on Jeans instability, the general dispersion relation is reduced for both transverse and longitudinal mode of propagations. In the case of transverse propagation, the gravitating mode is found to be affected by the viscosity, magnetization, resistivity, and magnetic field strength whereas Jeans criterion of instability is modified by the magnetization and quantum parameter. In the longitudinal mode of propagation, the gravitating mode is found to be modified due to the viscosity and quantum correction in which the Jeans condition of instability is influenced only by quantum parameter. The other non-gravitating Alfven mode in this direction is affected by finite electrical resistivity, spin induced magnetization, and viscosity. The numerical study for the growth rate of Jeans instability is carried out for both in the transverse and longitudinal direction of propagation to the magnetic field. The effect of various parameters on the growth rate of Jeans instability in quantum plasma is analysed

  13. Jeans instability of rotating magnetized quantum plasma: Influence of radiation

    Energy Technology Data Exchange (ETDEWEB)

    Joshi, H., E-mail: hjoshi8525@yahoo.com [Department of Physics, Mewar University, Chittorgarh (Raj.) India (India); Pensia, R. K. [Department of Physics, Govt. Girls College, Neemuch (M.P.) India (India)

    2015-07-31

    The effect of radiative heat-loss function and rotation on the Jeans instability of quantum plasma is investigated. The basic set of equations for this problem is constructed by considering quantum magnetohydrodynamic (QMHD) model. Using normal mode analysis, the general dispersion relation is obtained. This dispersion relation is studied in both, longitudinal and transverse direction of propagations. In both case of longitudinal and transverse direction of propagation, the Jeans instability criterion is modified due to presence of radiative heat-loss function and quantum correction.

  14. Hiiu murdekeel Jean Baptiste Holzmayeri "Osilianas" / Helmi Neetar

    Index Scriptorium Estoniae

    Neetar, Helmi

    1997-01-01

    Saaremaa muinasusundi ja rahvaluule koguja ning uurija Jean Baptiste Holzmayeri teosest "Osiliana" (II osa ilmus 1873) ja Pühalepa pastori von Segenbuschi kaastööst sellele ning uurimuses sisalduvatest hiiumurdelistest keelenditest

  15. Jean Piaget's Debt to John Dewey

    Science.gov (United States)

    Tanner, Daniel

    2016-01-01

    Jean Piaget became a veritable institution unto himself in education and psychology, largely as the result of his developmental-stage theory advanced over the second quarter of the twentieth century. Not until Piaget was 73 did he make mention of John Dewey's work at Dewey's laboratory school, founded in 1894 at the University of Chicago. But here…

  16. Jeans instability of magnetized quantum plasma: Effect of viscosity, rotation and finite Larmor radius corrections

    International Nuclear Information System (INIS)

    Jain, Shweta; Sharma, Prerana; Chhajlani, R. K.

    2015-01-01

    The Jeans instability of self-gravitating quantum plasma is examined considering the effects of viscosity, finite Larmor radius (FLR) corrections and rotation. The analysis is done by normal mode analysis theory with the help of relevant linearized perturbation equations of the problem. The general dispersion relation is obtained using the quantum magneto hydrodynamic model. The modified condition of Jeans instability is obtained and the numerical calculations have been performed to show the effects of various parameters on the growth rate of Jeans instability

  17. Monsieur Jean-Noël Guerini, Senator, Chairman of the Bouches-du-Rhône General Council

    CERN Multimedia

    Patrice Loïez

    2003-01-01

    Monsieur Jean-Noël Guerini, Senator and Chairman of the Bouches-du-Rhône General Council visited CERN on 21 March 2003.Photo 01: Handshake between Monsieur Jean-Noël Guerini and CERN Director-General Luciano Maiani at the signing of the CERN VIP Visitors' book. Left to right: Prof. Cecilia Jarlskog, Member State relations; Prof. Claude Détraz, Director for fixed target and future programmes; Prof. Jean-Jacques Aubert, Director, French national institute for nuclear and particle physics (IN2P3), French Delegate to CERN; Prof. Luciano Maiani, CERN Director-General; Monsieur Jean-Noël Guerini; and Prof. Elie Aslanides, Director, centre for particle physics, Marseille (CPPM).Photo 02: Monsieur Jean-Noël Guerini signs the CERN VIP Visitors' book. Left to right: Prof. Cecilia Jarlskog, Member State relations; Prof. Claude Détraz, Director for fixed target and future programmes; Prof. Jean-Jacques Aubert, Director, French national institute for nuclear and particle physics (IN2P3), French Delegate to CERN; Pr...

  18. [Fatal diseases and "imaginary" suffering. "Hypochondria" and "consumption" in the correspondence between Jean Paul and Johann Bernhard Hermann, with a perspective on Jean Paul's literature and aesthetics].

    Science.gov (United States)

    Meier, Monika

    2007-01-01

    The German writerJean Paul (Johann Paul Friedrich Richter, 1763-1825) and his friendJohann Bernhard Hermann (1761-1790) became acquainted with the thoughts of late Enlightenment at the University of Leipzig. They particularly appreciated the anthropology of Ernst Platner, who taught philosophy and aesthetics as well as medicine. Their confidential correspondence contains reflections on their respective situation and well being. Both write about feeling ill and label their illness "hypochondria". In the course of the correspondence Jean Paul's understanding of hypochondria evolves from an illness of the entrails as he follows Hermann, who supports the modern concept of hypochondria as an illness of the nerves. Two important themes from this correspondence recur in Jean Paul's novels and tales: firstly, his way of expressing comfort is related to his aesthetics, and secondly, the satirical way of portraying at least certain aspects of illness as imaginary reappears in his first successful novel "The Invisible Lodge" (1793).

  19. Parole in Jeans: poetry and telematics

    Directory of Open Access Journals (Sweden)

    Paola Barisone

    1998-01-01

    Full Text Available Presentation of project "Parole in Jeans" focuses on poetry and telematics under more 'general education reading in a multimedia context. The theme concerns "the culture of the various Italian regions" created through a collaborative implemented electronically between Genoa Middle School, Udine and Padua. The main aim 'to promote reading, comprehension and production of poetic texts in an interdisciplinary context and key media.

  20. Marketing plan of Vips Jeans

    OpenAIRE

    Marzá Mallol, Adrià

    2015-01-01

    Treball Final de Grau en Administració d'Empreses. Codi: AE1049. Curs: 2014/2015 The following work shows the Marketing Plan of Vips Jeans, this company is specialized in the commercialization of fashion-forward. His shop in the street ‘En medio’ in Castellón sells clothing, shoes and accessories of the best current brands. This company has been operating since 1988 and their main Competitive Advantage is the social prestige among Castellón consumers, acquired during these 26 ...

  1. 2017-2018 Hospitality Expense Reports for Jean Lebel, President

    International Development Research Centre (IDRC) Digital Library (Canada)

    SD

    Page 1. Description: Dinner - Discuss IDRC's programming. Date: 2017-06-08. Attendees: 2 (IDRC 1). Location: Ottawa. Total: $213.12. Comments: 2017-2018 Hospitality Expense Reports for Jean Lebel, President.

  2. Jean Lebel | IDRC - International Development Research Centre

    International Development Research Centre (IDRC) Digital Library (Canada)

    Jean previously served as Vice-President, Program and Partnership Branch, overseeing all IDRC programming, as well as Director, Agriculture and Environment. He holds a PhD in environmental sciences from l'Université du Québec à Montréal and an MScA in occupational health sciences from McGill University.

  3. Streaming Jeans-Alfvén Instability in Quantum Magnetoplasmas

    Science.gov (United States)

    Jamil, M.; Rasheed, A.; Hadi, F.; Ali, G.; Ayub, M.

    2017-10-01

    The physical mechanism of magnetosonic perturbations which modifies the Jeans instability in streaming quantum dusty magnetoplasmas is examined. These perturbations are low frequency and electromagnetic in nature that propagate with Alfvén speed. The fluid model consisting of momentum balance equations for quantum plasmas, Poisson's equation for gravitational potential, and Maxwell's equations for magnetosonic perturbations is used for the coupled solution. The numerical analysis of the dispersion relation elaborates the significant contribution of streaming speed of plasma species at equilibrium v0, uniform external magnetic field B0, electron number density at equilibrium n0e, and variable dust mass md over the Jeans instability. This study helps to understand the possible mechanism responsible for the formation of astrophysical objects.

  4. A quantum hydrodynamic model for multicomponent quantum magnetoplasma with Jeans term

    International Nuclear Information System (INIS)

    Masood, W.; Salimullah, M.; Shah, H.A.

    2008-01-01

    The effect of Jeans term in a multicomponent self-gravitating quantum magnetoplasma is investigated employing the quantum hydrodynamic (QHD) model. The effects of quantum Bohm potential and statistical terms as well as the ambient magnetic field are also investigated on both dust and ion dynamics driven waves in this Letter. We state the conditions that can drive the system unstable in the presence of Jeans term. The limiting cases are also presented. The present work may have relevance in the dense astrophysical environments where the self-gravitating effects are expected to play a pivotal role

  5. 2017-2018 Hospitality Expense Reports for Jean Lebel, President

    International Development Research Centre (IDRC) Digital Library (Canada)

    Chantal Taylor

    Page 1. Description: Lunch - Discussion of development research issues. Date: 2017-09-26. Attendees: 4 (3 IDRC). Location: Ottawa. Total: $64.00. Comments: 2017-2018 Hospitality Expense Reports for Jean Lebel, President.

  6. 2017-2018 Hospitality Expense Reports for Jean Lebel, President

    International Development Research Centre (IDRC) Digital Library (Canada)

    Chantal Taylor

    Page 1. Description: Lunch - Discussion of development research issues. Date: 2017-10-20. Attendees: 2 (1 IDRC). Location: Ottawa. Total: $32.00. Comments: 2017-2018 Hospitality Expense Reports for Jean Lebel, President.

  7. Mustamäe Jeans & Sport kujundati nädalaga

    Index Scriptorium Estoniae

    1998-01-01

    Kauplusele Jeans & Sport määras sisekujundaja Urmas Alling punased trepid ja laetalad ning must-valge värvikombinatsiooni, ülejäänud sisekujunduse eest kandis õnnestunult hoolt reklaamijuht Urmas Priske

  8. 2016-2017 Hospitality Expense Reports for Jean Lebel, President

    International Development Research Centre (IDRC) Digital Library (Canada)

    Beata Bialic

    Page 1. Description: Lunch with government official on current programming. Date: 2016-11-30. Attendees: 2 (IDRC 1). Location: Ottawa. Total: $57.00. Comments: 2016-2017 Hospitality Expense Reports for Jean Lebel, President.

  9. 2016-2017 Hospitality Expense Reports for Jean Lebel, President

    International Development Research Centre (IDRC) Digital Library (Canada)

    Beata Bialic

    Page 1. Description: Lunch with government official on current programming. Date: 2016-12-09. Attendees: 2 (IDRC 1). Location: Ottawa. Total: $72.00. Comments: 2016-2017 Hospitality Expense Reports for Jean Lebel, President.

  10. 2016-2017 Hospitality Expense Report for Jean Lebel, President

    International Development Research Centre (IDRC) Digital Library (Canada)

    Beata Bialic

    Page 1. Description: Lunch to discuss IDRC Strategic Planning with consultant. Date: 2016-06-10. Attendees: 3 (IDRC 2). Location: Ottawa. Total: $72.41. Comments: 2016-2017 Hospitality Expense Report for Jean Lebel, President.

  11. 2017-2018 Hospitality Expense Reports for Jean Lebel, President

    International Development Research Centre (IDRC) Digital Library (Canada)

    SD

    Page 1. Description: Lunch - Discuss programming with rural development research partners. Date: 2017-04-12. Attendees: 7 (IDRC 3). Location: Ottawa. Total: $162.00. Comments: 2017-2018 Hospitality Expense Reports for Jean Lebel, President.

  12. 2016-2017 Hospitality Expense Reports for Jean Lebel, President

    International Development Research Centre (IDRC) Digital Library (Canada)

    chantal Taylor

    Page 1. Description: Lunch to discuss programming opportunities with UN representative. Date: 2016-04-06. Attendees: 2 (IDRC 2). Location: Ottawa. Total: $34.00. Comments: 2016-2017 Hospitality Expense Reports for Jean Lebel, President.

  13. 2016-2017 Hospitality Expense Reports for Jean Lebel, President

    International Development Research Centre (IDRC) Digital Library (Canada)

    chantal Taylor

    Page 1. Description: Lunch to discuss health research programming in Africa. Date: 2016-04-15. Attendees: 3 (IDRC 2). Location: Ottawa. Total: $68.00. Comments: 2016-2017 Hospitality Expense Reports for Jean Lebel, President.

  14. 2016-2017 Hospitality Expense Report for Jean Lebel, President

    International Development Research Centre (IDRC) Digital Library (Canada)

    Beata Bialic

    Page 1. Description: Lunch to discuss African development with leading researcher. Date: 2016-06-09. Attendees: 2 (IDRC 1). Location: Ottawa. Total: $49.60. Comments: 2016-2017 Hospitality Expense Report for. Jean Lebel, President.

  15. PROBLEM PENDIDIKAN VIDEO GAMES DALAM PERSPEKTIF TEORI SIMULACRA JEAN BAUDRILLARD

    Directory of Open Access Journals (Sweden)

    Siti Murtiningsih, Joko Siswanto, M. Mukhtasar Syamsudin

    2013-05-01

    Full Text Available Abstract: Education Problems of Video Games in the Perspective of Jean Baudrillard’s Theory of Simulacra. In the era of digital age, we are witnessing how video games penetrate children’s daily life and it is believed to have some impacts on their cognitive and affective processes. Referring to hermeneutical approach, the present library research seeks to answer the question whether video games create a real identity or simply forge false consciousness in children. In the first step, the data were collected from bibliographi­cal sources that related to data. In the second step, the data were analyzed to examine the pedagogical-philosophical properties of the video games. The results indicate that video games change the way children view the world. Video games present the world as hiper-reality. Bu putting aside the negative values and maximizing the positive ones, the understanding of hiper-reality allows for the inculcation of children. Abstrak: Problem Pendidikan Video Games dalam Perspectif Teori Simulacra Jean Baudrillard. Permainan video games diyakini berdampak positif sekaligus negatif pada proses kognitif dan afektif anak.-anak. Terutama, video games berpengaruh pada proses internalisasi nilai-nilai dan pembentukan identitas mereka. Teknologi virtual yang disajikan oleh video games, seperti didekati oleh teori simulacra Jean Baudrillard, menyuguhkan jebakan akan realitas palsu. Melalui riset pustaka dengan metode "filsafat her­meneutis", dianalisis data untuk membangun refleksi filsafat pendidikan atas permainan video games itu. Hasil penelitian ini menyatakan video games menyuguhkan sebuah hiper-realitas dari simulasi realitas, atau simulacra dalam teori Jean Baudrillard. Simulacra adalah dunia yang terbentuk dari salinan realitas, yang menjadi acuan melebihi realitas asli. Disimpulkan bahwa video games menjadi semacam “ruang konseptual”, yang dibentuk oleh simulacra. Dengan mengenali hakikat hiper-realitas, video games dapat

  16. Jean-Baptiste Charcot and Brazil

    Directory of Open Access Journals (Sweden)

    Hélio Afonso Ghizoni Teive

    2014-06-01

    Full Text Available Jean-Baptiste Charcot, a neurologist from the famous Salpêtrière school and a renowned maritime explorer, visited Brazil twice. The first visit was in 1903, when the first French Antarctic expedition, traveling aboard the ship Français, made a very short stopover in Recife, in the state of Pernambuco. The second took place in 1908, during the famous voyage of the Pourquoi Pas? to the Antarctic, when Charcot and his crew stayed in the city of Rio de Janeiro for eight days.

  17. 2017-2018 Hospitality Expense Reports for Jean Lebel, President

    International Development Research Centre (IDRC) Digital Library (Canada)

    SD

    Page 1. Description: World Refugee Council lunch to discuss the refugee status. Date: 2017-05-17. Attendees: 25 (IDRC 4). Location: Ottawa. Total: $753.33. Comments: 2017-2018 Hospitality Expense Reports for Jean Lebel, President.

  18. 2016-2017 Hospitality Expense Reports for Jean Lebel, President

    International Development Research Centre (IDRC) Digital Library (Canada)

    Beata Bialic

    Page 1. Description: Lunch with government official to discuss current IDRC programming. Date: 2016-11-21. Attendees: 2 (IDRC 1). Location: Ottawa. Total: $57.00. Comments: 2016-2017 Hospitality Expense Reports for Jean Lebel, President.

  19. Jean Rouch: sign, true and thought

    Directory of Open Access Journals (Sweden)

    Ana Paula Oliveira

    2014-12-01

    Full Text Available This article is based on a fundamental question: thinking cinema verite documentary created by Jean Rouch from Deleuze’s power of the false problematic to highlight the singularities of images and signs that make it up. The cinematographic images created by Rouch allowing that thought be taken to maximum intensity and the process of artistic creation make speakable the unspeakable, audible the inaudible and visible the invisible.  

  20. Design jeans for recycling: a supply chain case study in The Netherlands.

    Science.gov (United States)

    van Bommel, Harrie; Goorhuis, Maarten

    2014-11-01

    Because the insight is raising that waste prevention needs an integral product chain approach, a product chain project was awarded with an International Solid Waste Association grant. The project decided to focus on jeans because of the large environmental impacts of cotton and the low recycling rates. The project used an open innovative approach by involving many actors from the different phases of the chain and included student and applied researchers. In a 'design jeans for recycling' students' workshop, prototypes of jeans that are easier to recycle have been developed. Integrating the new generation from different disciplines in the project proved to be very successful. The results show that an open innovation process can lead to very creative ideas and that lessons learned from this project could be used to develop new chain projects for other products. An important condition is that key actors are willing to cooperate in an open innovation approach. © The Author(s) 2014.

  1. Nothing is Erased: Hubert Damisch and Jean Dubuffet

    NARCIS (Netherlands)

    Berrebi, S.

    2015-01-01

    Alongside his writings on the cloud, architecture, the Italian Renaissance, and cinema that established him as one of the most important art historians and philosophers working in France since the 1960s, Hubert Damisch (1928-) edited the four volumes of the writings of artist Jean Dubuffet

  2. 2016-2017 Hospitality Expense Reports for Jean Lebel, President

    International Development Research Centre (IDRC) Digital Library (Canada)

    chantal Taylor

    Page 1. Description: Lunch to discuss IDRC's mandate and programming with foreign official. Date: 2016-04-08. Attendees: 3 (IDRC 2). Location: Ottawa. Total: $51.00. Comments: 2016-2017 Hospitality Expense Reports for Jean Lebel, President.

  3. Formation of giant cloud complexes by the Parker-Jeans instability

    International Nuclear Information System (INIS)

    Elmegreen, B.G.

    1982-01-01

    The Parker-Jeans instability is considered as a possible mechanism for forming the giant cloud complexes observed near OB associations. We use a previously derived dispersion relation to evaluate the masses and growth times of the dominant modes in this instability. The results show that massive clouds (Mroughly-equal10 6 M/sub sun/) can form quickly (roughly-equal12 million yr) in the high density environments (5 cm -3 ) associated with spiral density wave shocks. For densities larger than about 3 cm -3 , these clouds form primarily as a result of the self-graviational forces in the interstellar medium. Lower mass clouds (Mroughly-equal10 5 M/sub sun/) can form in lower density environments as a result of the pure Parker instability. The masses of the clouds that form when the density exceeds about 3 cm -3 are insensitive to the magnetic field strength, cosmic ray pressure, and ambient density (even in compressed media.). These masses are essentially the Jeans mass in a magnetic interstellar medium. The occurrence of a characteristic mass may explain the similarity of the local OB associations. The role of the Parker-Jeans instability as part of a complete theory of cloud formation is summarized

  4. Jean Desmet and the Early Dutch Film Trade

    NARCIS (Netherlands)

    Blom, Ivo

    2003-01-01

    Since 1957 the Film Museum in Amsterdam has been in possession of the Desmet Collection which contains the estate of the Dutch cinema owner and film distributor Jean Desmet (1875-1956). The collection comprises almost nine hundred European and American films in all genres, a collection of publicity

  5. 2016-2017 Travel Expense Reports for Jean Lebel, President

    International Development Research Centre (IDRC) Digital Library (Canada)

    Beata Bialic

    (s):. 2016-11-08. Destination(s):. Montreal. Airfare: $0.00. Other. Transportation: $333.58. Accommodation: $201.12. Meals and. Incidentals: $111.20. Other: $0.00. Total: $645.90. Comments: 2016-2017 Travel Expense Reports for Jean. Lebel ...

  6. Reklaamid nagu kino / Jean Marie Bouriscot ; interv.Valner Valme

    Index Scriptorium Estoniae

    Bouriscot, Jean Marie

    2001-01-01

    Sakala keskuses toimus reedel 6. korda reklaamiõgijate öö, kus näidati reklaamiklippe Jean Marie Bouriscotþ kogust. Kogu omanik polnud küll seekord ise kohal, kuid vastas siiski ajakirjaniku küsimustele oma huviala kohta

  7. Gravitation Field Dynamics in Jeans Theory A. A. Stupka

    Indian Academy of Sciences (India)

    Key words. Time equations—Jeans ... A as longitudinal vector potential, however, one should remember that it is a new generalized co-ordinate of .... Further, it is convenient to consider the equation (9) in the picture of spatial depen- dence of ...

  8. Limiares: Histoire( s) du cinéma de Jean-Luc Godard

    OpenAIRE

    Gervaiseau, Henri

    2006-01-01

    Neste artigo apresentamos a série videográfica Histoire(s) du cinéma, de Jean Luc Godard, apontamos as suas principais características, e efetuamos um primeiro exame da ordenação dos seus dois primeiros episódios. Discutimos de que modo Godard estabelece, nesta obra, uma trama poética de relações entre a história do século XX; a história do cinema e a sua própria estória enquanto sujeito enunciador. This article provides an introduction to the video series Histoire( s) du cinéma de Jean Lu...

  9. Luciano Maiani and Jean Iliopoulos awarded the Dirac Medal

    CERN Multimedia

    2007-01-01

    Luciano Maiani, when he was Director-General of CERN. Jean Iliopoulos in 1999. (©CNRS Photothèque - Julien Quideau)On 8 August, the 2007 Dirac Medal, one of the most prestigious prizes in the fields of theoretical physics and mathematics, was awarded to Luciano Maiani, professor at Rome’s La Sapienza University and former Director-General of CERN, and to Jean Iliopoulos, emeritus Director of Research at the CNRS Laboratory of Theoretical Physics. The medal was awarded to both physicists for their joint "work on the physics of the charm quark, a major contribution to the birth of the Standard Model, the modern theory of Elementary Particles." Founded by the Abdus Salam International Centre for Theoretical Physics (ICTP) in 1985, the Dirac Medal is awarded annually on 8 August, the birthday of the famous physicist Paul Dirac, winner of the 1933 Nobel Prize for Physics. It is awarded to ...

  10. Leguay Jean-Pierre, 1999, La pollution au Moyen-Âge, Edition Jean-Paul Gisserot, Paris

    Directory of Open Access Journals (Sweden)

    Sandrine Rousseau

    2004-10-01

    Full Text Available Si vous aviez du Moyen-Âge la vision qu’en donnent certaines gravures : une belle princesse au bras d’un preux chevalier, Jean-Pierre Leguay, professeur d’histoire médiévale à l’université de Haute-Normandie, risque de vous surprendre. En effet, son ouvrage, La pollution au Moyen-Âge modifiera sans doute cette vision idyllique. Pour commencer, sachez que la princesse et son preux chevalier ont les pieds dans la boue, une boue composée de la fange, d’excréments humains, de déchets des bouchers...

  11. Leguay Jean-Pierre, 1999, La pollution au Moyen-Âge, Edition Jean-Paul Gisserot, Paris

    OpenAIRE

    Rousseau, Sandrine

    2004-01-01

    Si vous aviez du Moyen-Âge la vision qu’en donnent certaines gravures : une belle princesse au bras d’un preux chevalier, Jean-Pierre Leguay, professeur d’histoire médiévale à l’université de Haute-Normandie, risque de vous surprendre. En effet, son ouvrage, La pollution au Moyen-Âge modifiera sans doute cette vision idyllique. Pour commencer, sachez que la princesse et son preux chevalier ont les pieds dans la boue, une boue composée de la fange, d’excréments humains, de déchets des bouchers...

  12. 77 FR 56647 - Lisa Jean Sharp: Debarment Order

    Science.gov (United States)

    2012-09-13

    ... Act (the FD&C Act) permanently debarring Lisa Jean Sharp from providing services in any capacity to a...&C Act. Ms. Sharp was given notice of the proposed permanent debarment and an opportunity to request... drug product under the FD&C Act. The factual basis for this conviction is as follows: Ms. Sharp was the...

  13. A NEW METHOD TO DIRECTLY MEASURE THE JEANS SCALE OF THE INTERGALACTIC MEDIUM USING CLOSE QUASAR PAIRS

    International Nuclear Information System (INIS)

    Rorai, Alberto; Hennawi, Joseph F.; White, Martin

    2013-01-01

    Although the baryons in the intergalactic medium (IGM) trace dark matter fluctuations on megaparsec scales, on smaller scales ∼100 kpc, fluctuations are suppressed because the finite temperature gas is pressure supported against gravity, analogous to the classical Jeans argument. This Jeans filtering scale, which quantifies the small-scale structure of the IGM, has fundamental cosmological implications. First, it provides a thermal record of heat injected by ultraviolet photons during cosmic reionization events, and thus constrains the thermal and reionization history of the universe. Second, the Jeans scale determines the clumpiness of the IGM, a critical ingredient in models of cosmic reionization. Third, it sets the minimum mass scale for gravitational collapse from the IGM, and hence plays a pivotal role in galaxy formation. Unfortunately, it is extremely challenging to measure the Jeans scale via the standard technique of analyzing purely longitudinal Lyα forest spectra, because the thermal Doppler broadening of absorption lines along the line-of-sight, is highly degenerate with Jeans smoothing. In this work, we show that the Jeans filtering scale can be directly measured by characterizing the coherence of correlated Lyα forest absorption in close quasar pairs, with separations small enough ∼100 kpc to resolve it. We present a novel technique for this purpose, based on the probability density function (PDF) of phase angle differences of homologous longitudinal Fourier modes in close quasar pair spectra. A Bayesian formalism is introduced based on the phase angle PDF, and Markov Chain Monte Carlo techniques are used to characterize the precision of a hypothetical Jeans scale measurement, and explore degeneracies with other thermal parameters governing the IGM. A semi-analytical model of the Lyα forest is used to generate a large grid (500) of thermal models from a dark matter only simulation. Our full parameter study indicates that a realistic sample of

  14. A NEW METHOD TO DIRECTLY MEASURE THE JEANS SCALE OF THE INTERGALACTIC MEDIUM USING CLOSE QUASAR PAIRS

    Energy Technology Data Exchange (ETDEWEB)

    Rorai, Alberto; Hennawi, Joseph F. [Max-Planck-Institut für Astronomie, Königstuhl 17, D-69117 Heidelberg (Germany); White, Martin [Department of Astronomy, University of California at Berkeley, 601 Campbell Hall, Berkeley, CA 94720-3411 (United States)

    2013-10-01

    Although the baryons in the intergalactic medium (IGM) trace dark matter fluctuations on megaparsec scales, on smaller scales ∼100 kpc, fluctuations are suppressed because the finite temperature gas is pressure supported against gravity, analogous to the classical Jeans argument. This Jeans filtering scale, which quantifies the small-scale structure of the IGM, has fundamental cosmological implications. First, it provides a thermal record of heat injected by ultraviolet photons during cosmic reionization events, and thus constrains the thermal and reionization history of the universe. Second, the Jeans scale determines the clumpiness of the IGM, a critical ingredient in models of cosmic reionization. Third, it sets the minimum mass scale for gravitational collapse from the IGM, and hence plays a pivotal role in galaxy formation. Unfortunately, it is extremely challenging to measure the Jeans scale via the standard technique of analyzing purely longitudinal Lyα forest spectra, because the thermal Doppler broadening of absorption lines along the line-of-sight, is highly degenerate with Jeans smoothing. In this work, we show that the Jeans filtering scale can be directly measured by characterizing the coherence of correlated Lyα forest absorption in close quasar pairs, with separations small enough ∼100 kpc to resolve it. We present a novel technique for this purpose, based on the probability density function (PDF) of phase angle differences of homologous longitudinal Fourier modes in close quasar pair spectra. A Bayesian formalism is introduced based on the phase angle PDF, and Markov Chain Monte Carlo techniques are used to characterize the precision of a hypothetical Jeans scale measurement, and explore degeneracies with other thermal parameters governing the IGM. A semi-analytical model of the Lyα forest is used to generate a large grid (500) of thermal models from a dark matter only simulation. Our full parameter study indicates that a realistic sample of

  15. 2337-IJBCS-Article-Jean Claude Kamb T

    African Journals Online (AJOL)

    hp

    Jean-Claude KAMB TSHIJIK 1*, Séraphin NDEY IFUTA2, .... type Aw4 suivant la classification de Köppen. ... trois classes de qualité des eaux (Evrard, ... analyse de regroupement (cluster analysis) .... de Pielou calculées pour l'ensemble des ..... in k u sa. S+Vg (G). I. 1. 12. 2. 5. 28. 3. 5. V+MO (A). I. 2. 3. 4 2. 2. 68. 1. 1.

  16. 2015-2016 Travel and Hospitality Expense Reports for Jean Lebel ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Ruxandra Staicu

    Page 1. Description: Lunch to discuss IDRC's mandate and programming. Date: 2016-02-01. Attendees: 3 (IDRC 2). Location: Ottawa. Total: $20.75. Comments: 2015-2016 Travel and Hospitality Expense. Reports for Jean Lebel, President.

  17. 2015-2016 Travel and Hospitality Expense Reports for Jean Lebel ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Ruxandra Staicu

    Page 1. Description: Lunch to discuss strategic development of health programming. Date: 2016-01-26. Attendees: 2 (IDRC 1). Location: Ottawa. Total: $46.69. Comments: 2015-2016 Travel and Hospitality Expense. Reports for Jean Lebel, President.

  18. 2017-2018 Travel Expense Reports for Jean Lebel, President

    International Development Research Centre (IDRC) Digital Library (Canada)

    SD

    Purpose: Attend Public Policy Forum Dinner. Date(s):. 2017-04-19 to 2017-04-21. Destination(s):. Toronto. Airfare: $159.84. Other. Transportation: $25.25. Accommodation: $490.02. Meals and. Incidentals: $149.03. Other: $0.00. Total: $824.14. Comments: 2017-2018 Travel Expense Reports for Jean. Lebel, President.

  19. 2017-2018 Travel Expense Reports for Jean Lebel, President

    International Development Research Centre (IDRC) Digital Library (Canada)

    Chantal Taylor

    Attend conference organized by the Montreal Council on Foreign. Relations. Date(s):. 2017-10-27. Destination(s):. Montreal. Airfare: $190.86. Other. Transportation: $60.00. Accommodation: $0.00. Meals and. Incidentals: $42.12. Other: $0.00. Total: $292.98. Comments: 2017-2018 Travel Expense Reports for. Jean Lebel ...

  20. Jean-Jacques Rousseau gramatólogo

    Directory of Open Access Journals (Sweden)

    Jesús Camarero

    2009-04-01

    Full Text Available An analysis about Jean-Jacques Rousseau’s contribution to the theory of writing and the grammatology. This analysis contains a systematic comparison of the rousseaunian ideas about the language and the writing with another theories of the 17th (Arnauld and Lancelot, 18th (Condillac, Paillasson, Jaucourt and 20th centuries (Saussure. The contrast of Rousseau’s ideas to Saussure’s about writing also, allows to make explicit Rousseau’s grammatological ideas’s big importance and his relation with the grammatology (Gelb,Derrida, Harris, exceeding avant la lettre modern linguistics’s phonocentrism.

  1. Effect of secondary electron emission on Jean's instability in a complex plasma in the presence of nonthermal ions

    International Nuclear Information System (INIS)

    Sarkar, Susmita; Maity, Saumyen; Banerjee, Soumyajyoti

    2011-01-01

    In this paper, we have investigated the role of secondary electron emission on Jean's instability in a complex plasma in the presence of nonthermal ions. The equilibrium dust surface potential has been considered negative and hence primary and secondary electron temperatures are equal. Such plasma consists of three components: Boltzman distributed electrons, nonthermal ions and negatively charged inertial dust grains. From the linear dispersion relation, we have calculated the real frequency and growth rate of Jean's instability. Numerically, we have shown that for strong ion nonthermality Jean's mode is unstable. Growth of the instability reduces and the real part of the wave frequency increases with increasing secondary electron emission from dust grains. Hence, strong secondary electron emission suppresses Jean's instability in a complex plasma even when ion nonthermality is strong and equilibrium dust charge is negative.

  2. 2017-2018 Travel Expense Reports for Jean Lebel, President

    International Development Research Centre (IDRC) Digital Library (Canada)

    Chantal Taylor

    Purpose: Attend the Gender Summit 11. Date(s):. 2017-11-06 to 2017-11-09. Destination(s):. Montreal. Airfare: $0.00. Other. Transportation: $203.58. Accommodation: $639.03. Meals and. Incidentals: $241.37. Other: $0.00. Total: $1,083.98. Comments: 2017-2018 Travel Expense Reports for. Jean Lebel, President.

  3. 2016-2017 Travel Expense Report for Jean Lebel, President

    International Development Research Centre (IDRC) Digital Library (Canada)

    Beata Bialic

    Purpose: Attend C2 Conference in Montreal. Date(s):. 2016-05-24 to 2016-05-26. Destination(s):. Montreal. Airfare: $0.00. Other. Transportation: $144.32. Accommodation: $344.61. Meals and. Incidentals: $246.44. Other: $0.00. Total: $735.37. Comments: 2016-2017 Travel Expense Report for Jean. Lebel, President.

  4. Performing the Narrators in Jean Stafford's "The Hope Chest."

    Science.gov (United States)

    JoAnn Niehaus, Sister

    "The Hope Chest," a short story by Jean Stafford, offers a challenge to the oral interpreter of literature because it demands that the performer demonstrate its complex narrative levels. There are five distinct facets in the personality of the central character, Miss Bellamy: a lonely, fearful old lady; a shrewd, hospitable mistress of…

  5. Hannah Arendt & Jean Baudrillard: Pedagogy in the Consumer Society

    Science.gov (United States)

    Norris, Trevor

    2006-01-01

    This paper considers the place of education within our "consumers' society", beginning with Hannah Arendt's account of the rise of consumerism to a position of political dominance and the resulting eclipse of public life. Connections are then made between Arendt's account of this rise and Jean Baudrillard's account of the postmodern proliferation…

  6. STUDI KOMPARASI SAMINISME DENGAN JEAN PAUL SARTRE TENTANG KEBEBASAN (Tinjauan Filsafat Sosial

    Directory of Open Access Journals (Sweden)

    Restu Trisnova

    2016-09-01

    Full Text Available The comparative study between Saminism concept and Jean Paul Sartre thought of freedom are: 1 Human freedom, according to Sartre, is an absolute freedom. No other rules which are able to determine human either God or other people; 2 The Saminism concept of freedom is an individual freedom. It means every individual as a subject is able to decide their own choice. Every individual as a subject is independent without any outside order; 3 Saminism freedom conveys individual responsibility. It means every person’s freedom has individual responsibility. Every doer subject can decide everything based on their interest. Therefore, the freedom and responsibility in Saminism actualizes the Jean Paul Sartre thought of freedom.

  7. Effect of rotation on Jeans instability of magnetized radiative quantum plasma

    Science.gov (United States)

    Joshi, H.; Pensia, R. K.

    2017-03-01

    The influence of rotation on the Jeans instability of homogeneous magnetized radiative quantum plasma is investigated. The basic equations of the problem are constructed and linearized by using the Quantum Magnetohydrodynamics (QMHD) model. The general dispersion relation is obtained by using the normal mode analysis technique, which is reduced for both the transverse and the longitudinal mode of propagations and further it is reduced for the axis of rotation parallel and perpendicular to the magnetic field. We found that the stabilizing effects of rotation are decreases for a strong magnetic field which is shown in the graphical representation. We also found that the quantum correction modified the condition of Jeans instability in both modes of propagation. The stabilizing effect of rotation is more increased in the presence of quantum correction.

  8. Kinetic theory of Jean instability in Eddington-inspired Born-Infeld gravity

    Energy Technology Data Exchange (ETDEWEB)

    Martino, Ivan de [University of the Basque Country UPV/EHU, Department of Theoretical Physics and History of Science, Faculty of Science and Technology, Leioa (Spain); Capolupo, Antonio [Universita di Salerno, Dipartimento di Fisica E.R. Caianiello, Fisciano (Italy); INFN Gruppo Collegato di Salerno, Fisciano (Italy)

    2017-10-15

    We analyze the stability of self-gravitating systems which dynamics is investigated using the collisionless Boltzmann equation, and the modified Poisson equation of Eddington-inspired Born-Infield gravity. These equations provide a description of the Jeans paradigm used to determine the critical scale above which such systems collapse. At equilibrium, the systems are described using the time-independent Maxwell-Boltzmann distribution function f{sub 0}(v). Considering small perturbations to this equilibrium state, we obtain a modified dispersion relation, and we find a new characteristic scale length. Our results indicate that the dynamics of self-gravitating astrophysical systems can be fully addressed in the Eddington-inspired Born-Infeld gravity. The latter modifies the Jeans instability in high densities environments, while its effects become negligible in star formation regions. (orig.)

  9. Karl Popper and Jean Piaget: A Rationale for Constructivism

    Science.gov (United States)

    Harlow, Steve; Cummings, Rhoda; Aberasturi, Suzanne M.

    2006-01-01

    The current faddish use of the term constructivism has taken on as many different definitions as the number of people attempting to define it. This essay clarifies the meaning of constructivism through an examination of Karl Popper's and Jean Piaget's theories. The authors provide a rationale for the use of Popper's paradigm of "Three Worlds" and…

  10. 2015-2016 Travel and Hospitality Expense Reports for Jean Lebel ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Ruxandra Staicu

    Description: Lunch to discuss IDRC programming in Peru. Date: 2016-02-04. Attendees: 4 (IDRC 2). Location: Ottawa. Total: $68.00. Comments: 2015-2016 Travel and Hospitality Expense. Reports for Jean Lebel, President. Page 2. Working lunch to discuss IDRC programming in Peru, Ambassador Bravo, Counselor ...

  11. Linear coupling of electromagnetic and Jeans modes in self-gravitating plasma streams

    International Nuclear Information System (INIS)

    Yaroshenko, Victoria V.; Voitenko, Yuriy; Goossens, Marcel

    2002-01-01

    A new mechanism of linear coupling between electromagnetic (nonpotential) and gravitational disturbances is found for oblique propagation relatively to particle streams. The general dispersion law is derived and applied to the case of two countersteaming dust beams of equal strength and quiasiperpendicular propagation. It reveals a strong linear coupling between the low-frequency aperiodically unstable electromagnetic (AEM) and the Jeans (JM) modes. The coupling is of a mode conversion type, resulting in a frequency gap in the dispersion, and thus significantly modifies the instability criteria. It is shown that, in contrast to the electrostatic case, AEM and JM coupling in streaming self-gravitating plasmas can actually appear even if the plasma frequencies of the dust species greatly exceed the corresponding Jeans frequencies

  12. A monarquia segundo Jean-Jacques Rousseau

    Directory of Open Access Journals (Sweden)

    Renato Moscateli

    2004-12-01

    Full Text Available The Swiss philosopher Jean-Jacques Rousseau didn't limit himself to consider how a democratic State could be constructed in substitution to the absolutist monarchies existing at his time. He also dedicated his efforts to understand the monarchic regime itself, being conscientious of the obstacles to be overstepped so that this political form was surpassed in direction to other ones more next to his ideals, in which all the citizens could participate actively of the administration of the government. Thus, the article will handle some aspects of the Rousseau's reflection about the monarchy, from his criticism to the regime until his concrete proposals for possible reforms on it.

  13. Ensaio de Pedagogia Comparada: Jean Jacques Rousseau (1712-1778) X Immanuel Kant (1724-1804) (Essay on Compared Pedagogy: Jean Jacques Rousseau (1712-1778) X Immanuel Kant (1724-1804).

    Science.gov (United States)

    Fontanella, Francisco Cock

    2000-01-01

    Finds that, although the thought of Jean Jacques Rousseau is frequently cited as an influence on Immanuel Kant, this has no basis regarding pedagogical influence. Compares the "Projecto" and "Emilio" of Rousseau with Kant's "Pedagogia." (BT)

  14. Jean Lafitte 2013, 1.0 Meter LiDAR, Classified point cloud

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — The Light Detection and Ranging (LiDAR) dataset is a survey of the Jean Lafitte,G13PD00214, 1.0 Meter LiDAR Survey Area in south of New Orleans and encompasses 77...

  15. Il dono del libero arbitrio nella Terza Orazione inaugurale: analogie e differenze con Jean Bodin

    Directory of Open Access Journals (Sweden)

    Claudia Megale

    2016-11-01

    Full Text Available [The “gift of free will” in the Third Inaugural Oratio: Similarities and Differences with Jean Bodin]. This paper intends to emphasize the position of Vico between knowledge and liberty with reference to modern concept of respublica literaria. We are still far from Voltaire’s Traité, but the political influences of the theory of religious tolerance had found full expression already at the end of the XVIth century, expecially by Jean Bodin, whose Colloquium Heptaplomeres (1593 is analyzed by the author and compared with Vico’s Oratio III.

  16. [Jean-Daniel Strub. Der gerechte Friede. Spannungsfelder eines friedensethnischen Leibegriffs.] / Andreas Pawlas

    Index Scriptorium Estoniae

    Pawlas, Andreas

    2012-01-01

    Arvustus: Strub, Jean-Daniel. Der gerechte Friede. Spannungsfelder eines friedensethnischen Leibegriffs. (Forum Systematik. beiträge zur Dogmatik, Ethik und ökumenischen Theologie, hg von Johannes Brosseder, Johannes Fischer und Joachim Track, Band 36), Verlag W. Kohlhammer, Stuttgart 2010

  17. Du lexique de l'eau dans Mont-Oriol et Pierre et Jean de Guy de Maupassant

    OpenAIRE

    Benzina, Ouafae

    2017-01-01

    [EN] The following article revolves around the theme of water in Mont-Oriol and Pierre and Jean of Guy de Maupassant. These two fabulous novels, indeed, include the theme of water in all its forms. In Mont-Oriol, the aquatic element determines its novelistic space and represents in itself the novel’s frame. It is present in many aspects : water, source, lake, resort, and stream. In Pierre and Jean, the lexicon of the sea is very abundant. The theme of the sea keeps appearing conti...

  18. Ces silences de la narration qui rapprochèrent Jean Giono et Juan Ramón Jiménez

    Directory of Open Access Journals (Sweden)

    Dominique Bonnet

    2010-01-01

    Full Text Available This article intends to show how JeanGiono discovered a purity of writing inJuan Ramón Jiménez that he practicedhimself in his elliptical narratives. Thus,this purifying desire that both sought intheir writings would be one of the commonpoints that would persuade Jean Giono todo the film adaptation of Platero y yo.

  19. Distortions in the Rayleigh-Jeans region of the cosmic background radiation spectrum

    International Nuclear Information System (INIS)

    De Zotti, G.

    1982-01-01

    The theory of the origin and evolution of distortions in the Rayleigh-Jeans region of the cosmic background radiation spectrum is reviewed. Some proposed experiments, designed to substantially improve our knowledge of that portion of the spectrum, are briefly described. (author)

  20. de Jean Watson

    Directory of Open Access Journals (Sweden)

    Thaís Schossler

    2008-01-01

    Full Text Available Este estudio tuvo como objetivo conocer la percepción del cuidador domiciliario del anciano acerca del cuidado de sí mismo, teniendo como base teórica a Jean Watson en su Teoría del Cuidado Humano. La investigación se caracterizó por un abordaje cualitativo, de tipo exploratorio-descriptivo, el cual fue desarrollado en la Unidad de la Vila Floresta con nueve cuidadores domiciliarios de ancianos, integrantes del Programa de Atención a Domicilio. La recolección de informaciones se realizó en el período de agosto a octubre de 2006, por medio de una entrevista parcialmente estructurada. Se utilizó el análisis de contenido de Bardin y emergieron las categorías: compartir el cuidado al anciano - una posibilidad para cuidar de sí mismo; descansar, pasear, dormir, uno no tiene más ese derecho; presencia de la familia: una necesidad sentida por el cuidador domiciliar; (desequilibrio del cuerpo físico y mental, una resultante percibida en el (descuidado de sí mismo. Se concluye que el cuidador domiciliario es el principal responsable por el cuidado del anciano y que el cuidado de sí mismo se hace presente en su realidad.

  1. Jean Bodin, o Methodus e a Clio tucidideana: as figurações heroicizantes do historiador Jean Bodin, his ' Methodus' and Thucydides' Clio

    Directory of Open Access Journals (Sweden)

    Francisco Murari Pires

    2012-06-01

    Full Text Available Apreciando as representações figuradas na ideia de uma Clio Tucidideana por fins do século XVI, propõe-se refletir sobre a associação entre a concepção antiga de herói e a moderna de gênio como parâmetro epistemológico que catalisa a apreciação da excelência da práxis historiográfica. Aborda-se essa reflexão tomando em particular as proposições elaboradas sobre a escrita da História no Metodus de Jean Bodin que juntamente com La Popelinière e Thomas Hobbes configuram historiograficamente a ideia da Clio Tucidideana conceituada por Cesare Ripa.Considering the representations configured in the idea of a Thucydidean Clio in the end of the sixteenth century, the article proposes to think about the association between the ancient concept of the hero and the modern concept of the genius as a epistemological criterium that catalizes the appreciation of the excellence of historiographical praxis. The attention of the article is centered on the thesis proposed to the wrting of history in the Methodus of Jean Bodin, who configures, conjointly with La Popelinière and Thomas Hobbes, the historiographical formulation of the idea of a Thucydidean Clio cconceptualized by Cesare Ripa.

  2. Can You Hear Me Now? Jean-Jacques Rousseau on Listening Education

    Science.gov (United States)

    Laverty, Megan J.

    2011-01-01

    In this essay Megan J. Laverty argues that Jean-Jacques Rousseau's conception of humane communication and his proposal for teaching it have implications for our understanding of the role of listening in education. She develops this argument through a close reading of Rousseau's most substantial work on education, "Emile: Or, On Education". Laverty…

  3. Grafmeyer Yves, Authier Jean-Yves, Sociologie urbaine

    Directory of Open Access Journals (Sweden)

    Anaïs Van Sull

    2011-02-01

    Full Text Available Yves Grafmeyer et Jean-Yves Authier ont consacré la plupart de leurs travaux de recherche aux questions de l’espace urbain et de la socialisation qui y prend place. L’ouvrage qu’ils proposent, enrichi et actualisé par rapport à la première édition, aborde les différents objets, méthodes et problématiques qui peuvent être insérés dans le champ de la sociologie urbaine. S’ils reconnaissent une large part d’arbitraire dans les concepts et courants retenus, on ne peut que se réjouir des nouvelles...

  4. Jean Frémon/Rue du Regard

    OpenAIRE

    Mokhtari, Sylvie

    2012-01-01

    La prose de Jean Frémon sur la peinture se déploie ici en 48 courts textes, dont une bonne moitié d’entre eux avait déjà connu une première édition dans des revues. Abordés isolément, les œuvres de Bill Viola, David Hockney, Antoni Tàpies, Gilles Aillaud, Roy Lichtenstein… sont soumises à la traduction littéraire qu’en donne le « regardeur de tableau, jardinier, journalier, vagabond » et écrivain. J. Frémon chemine entre art et littérature à la rencontre d’artistes qui l’interpellent dans l’H...

  5. Molecular reality a perspective on the scientific work of Jean Perrin

    CERN Document Server

    Nye, Mary Jo

    1972-01-01

    Dr Nye analyses the philosophical and scientific debate among nineteenth-century chemists and physicists over the question of the physical reality of atoms and molecules. She traces the way in which the experimental investigations, methodological viewpoint and publications of the French physical chemist Jean Perrin contributed decisively to an end of the dispute by 1913.

  6. Design jeans for recycling: a supply chain case study in The Netherlands

    NARCIS (Netherlands)

    van Bommel, H.W.M.; van Bommel, Harrie; Goorhuis, Maarten

    2014-01-01

    Because the insight is raising that waste prevention needs an integral product chain approach, a product chain project was awarded with an International Solid Waste Association grant. The project decided to focus on jeans because of the large environmental impacts of cotton and the low recycling

  7. Documenting Reproduction and Inequality: Revisiting Jean Anyon's "Social Class and School Knowledge"

    Science.gov (United States)

    Luke, Allan

    2010-01-01

    Jean Anyon's (1981) "Social Class and School Knowledge" was a landmark work in North American educational research. It provided a richly detailed qualitative description of differential, social class-based constructions of knowledge and epistemological stance. This essay situates Anyon's work in two parallel traditions of critical educational…

  8. The outside of phenomenology: Jean-Luc Nancy on world and sense

    African Journals Online (AJOL)

    In this essay, I examine Jean-Luc Nancy's notion of the sense of the world in relation to the phenomenological investigation of the life-world in Husserl and the worldhood of the world in Heidegger. My aim is to address the reasons why Nancy stresses the need for a different thinking that goes beyond the phenomenological ...

  9. The Right College: As Comfortable as Your Favorite Pair of Jeans

    Science.gov (United States)

    Martin, Elizabeth Jean

    2009-01-01

    There is one thing on every shopping list that any student will be sure to choose accurately: the perfect pair of jeans. Indeed, this ubiquitous wardrobe staple is an important purchase requiring a variety of considerations, many of which correspond to another even more significant decision most students will make in the coming weeks, months or…

  10. Jean-Claude Brunet (1941 - 2016)

    CERN Multimedia

    2016-01-01

    Jean-Claude Brunet passed away on 27 February 2016.   Brunet joined CERN in 1966 and was one of the key players in the design of the colliders, from the ISR, the first Intersecting Storage Rings, to the LHC, not forgetting the AA, the first Antiproton Accumulator, and LEP. An engineer in the design office, he participated as a precursor to the development and implementation of many elements of the ultra-high vacuum (UHV) systems of these machines. He also played an important role in the design and construction of the LHC cryostats. As a leader, he was always open-minded and much appreciated by the younger generations. His strong energy led him to be a staff representative and one of the pillars of the touring section of the Ski Club. We have lost a creator, a traveller, a sailor, a mountaineer and a great friend. Our thoughts go to his wife, Marie-Claude and his family. His friends and former colleagues

  11. Chaînes logistiques et consommation d'énergie : cas du yaourt et du jean

    OpenAIRE

    Rizet , C.; Keita , Basile

    2005-01-01

    Contrat INRETS/ADEME n°: 0203034; Rapport de recherche; Pour analyser l'efficacité énergétique et les émissions de GES des chaînes logistiques, on compare différentes chaînes aboutissant aux mêmes consommateurs. Deux produits sont étudiés : le yaourt, caractéristique de la chaîne du froid et des flux tendus et le blue jean, intégré au marché mondial, tant pour sa matière première principale (le coton) que pour les différentes étapes de sa fabrication. Les chaînes étudiées pour le jean différe...

  12. Jean Giono mellom perlehøna og verden

    Directory of Open Access Journals (Sweden)

    Guri Ellen Barstad

    2003-08-01

    Full Text Available Jean Giono er lite kjent i Skandinavia. Bare to av de første romanene hans, Un de Baumugnes (1929 og Regain (1930, er oversatt til norsk. Begge tilhører den såkalte Pan-trilogien. Giono er den franske forfatteren som oftest blir sammenlignet med Knut Hamsun. Dette skyldes vel først og fremst naturfølelsen og den lyriske stilen, men også vandrerens sentrale plass i romanuniverset. Med sine underlige personer og oppløsning av den tradisjonelle formen blir Giono dessuten betraktet som en forløper for den franske nyromanen.

  13. Uus nobelist : prantslane Jean-Marie Gustave Le Clézio / Kaarel Kressa

    Index Scriptorium Estoniae

    Kressa, Kaarel, 1983-

    2008-01-01

    Nobeli kirjandusauhind 2008 - prantsuse romaanikirjanik Jean-Marie Gustave Le Clézio. Sisaldab autori eesti keelde tõlgitud teoste annotatsioone: Päev, mil Beaumont tegi tutvust oma valuga : [novell] / tlk. Merike Riives (kogumikust Prantsuse novell, 1973); Kõrb / tlk. Kristiina Ross (Eesti Raamat, 1990); Diego ja Frida / tlk. Sirje Keevallik (Kunst, 2007)

  14. Understanding the concept of «advertising» in sociology Jean Baudrillard

    Directory of Open Access Journals (Sweden)

    A. A. Sogorin

    2015-09-01

    It is proved that the «system of things» of Jean Baudrillard points out that the power of advertising is based on the belief in her from a mass consumers.. The root of this belief - the so-called «infantile bestowing function», which creates a sense of mythic human involvement, which is in this context belongs to a social nature.

  15. Influence of rotation and FLR corrections on selfgravitational Jeans instability in quantum plasma

    International Nuclear Information System (INIS)

    Jain, Shweta; Sharma, Prerana; Chhajlani, R K

    2014-01-01

    In the present work, the self-gravitational instability of quantum plasma is investigated including the effects of finite Larmor radius corrections (FLR) and rotation. The formulation is done employing quantum magnetohydrodynamic (QMHD) model. The plane wave solutions are employed on the linearized perturbed QMHD set of equations to obtain the general dispersion relation. The rotation is assumed only along the z- direction. The general dispersion relation is further reduced for transverse and longitudinal directions of propagation. It is found that in transverse direction of propagation the Jeans criterion is modified due to the rotation, FLR and quantum corrections while in longitudinal direction of propagation it is observed that the Jeans criterion is modified by quantum corrections only. The growth rate of perturbation is discussed numerically including the considered parameters FLR and quantum corrections. The growth rate is observed to be modified significantly due to the quantum correction and FLR effects.

  16. The Autodidact in Defense of Himself: Jean-Jacques Rousseau and Knut Hamsun.

    Science.gov (United States)

    Buttry, Dolores

    1980-01-01

    Describes Jean-Jacques Rousseau and Knut Hamsun as self-educated men who never ceased to warn of the evils of formal education. Quoting from their works, considers their feelings toward education as revealed in Rousseau's "Emile," with its description of ideal education, and in the ill effects of education on Hamsun's characters. (AYC)

  17. Jean Piaget and Rudolf Steiner: Stages of Child Development and Implications for Pedagogy.

    Science.gov (United States)

    Ginsburg, Iona H.

    1982-01-01

    The views of Jean Piaget and Rudolf Steiner concerning children's stages of development are compared and related to present-day instructional practices used in the Waldorf schools, which employ Steiner's ideas. Educational principles and practices used at the elementary school level are discussed. (PP)

  18. Notícias sobre uma expedição: Jean Massart e a missão biológica belga ao Brasil, 1922-1923 Notes on an expedition: Jean Massart and the Belgium biological mission to Brazil, 1922-1923

    Directory of Open Access Journals (Sweden)

    Alda Heizer

    2008-09-01

    Full Text Available Em 1922, chegou ao litoral brasileiro um grupo de naturalistas viajantes, liderados pelo belga Jean Massart. Registrada em imagens que integram a obra Une mission biologique belge au Brésil 1922-1923, a referida missão teve como objetivo coletar exemplares para o herbário de Bruxelas.In 1922, a group of traveling naturalists reached the Brazilian coast, led by Jean Massart, a Belgium. The goal of this mission was to collect specimens for the Brussels herbarium, as recorded in images found in Une mission biologique belge au Brésil, 1922-1923.

  19. Astronaut Jean-Francois Clervoy in middeck during launch/entry training

    Science.gov (United States)

    1994-01-01

    Wearing a training version of a partial pressure suit, Astronaut Jean-Francois Clervoy, STS-66 international mission specialist, secures himself on a collapsible seat on the middeck of a shuttle trainer during a rehearsal of procedures to be followed during launch and entry phases of the scheduled November flight of STS-66. This rehearsal, held in the crew compartment trainer (CCT) of JSC's Shuttle mockup and integration laboratory, was followed by a training session on emergency egress procedures.

  20. Non-thermal escape of molecular hydrogen from Mars

    Science.gov (United States)

    Gacesa, M.; Zhang, P.; Kharchenko, V.

    2012-05-01

    We present a detailed theoretical analysis of non-thermal escape of molecular hydrogen from Mars induced by collisions with hot atomic oxygen from the Martian corona. To accurately describe the energy transfer in O + H2(v, j) collisions, we performed extensive quantum-mechanical calculations of state-to-state elastic, inelastic, and reactive cross sections. The escape flux of H2 molecules was evaluated using a simplified 1D column model of the Martian atmosphere with realistic densities of atmospheric gases and hot oxygen production rates for low solar activity conditions. An average intensity of the non-thermal escape flux of H2 of 1.9 × 105 cm-2s-1 was obtained considering energetic O atoms produced in dissociative recombinations of O2+ ions. Predicted ro-vibrational distribution of the escaping H2 was found to contain a significant fraction of higher rotational states. While the non-thermal escape rate was found to be lower than Jeans rate for H2 molecules, the non-thermal escape rates of HD and D2 are significantly higher than their respective Jeans rates. The accurate evaluation of the collisional escape flux of H2 and its isotopes is important for understanding non-thermal escape of molecules from Mars, as well as for the formation of hot H2 Martian corona. The described molecular ejection mechanism is general and expected to contribute to atmospheric escape of H2 and other light molecules from planets, satellites, and exoplanetary bodies.

  1. Jean Fourastié, un expert en comptabilité

    OpenAIRE

    Boulat, Régis

    2010-01-01

    Qui ne connait pas Jean Fourastié, auteur de la formule des “Trente Glorieuses” et de plusieurs essais économiques grand public qui, en décrivant les mécanismes économiques de long terme, ont dévoilé aux Français le sens et la portée des transformations que leur pays connait après la guerre ? Pourtant, les amalgames les oublis et les simplifications montrent qu'il est un “inconnu célèbre”. Dans ce contexte, et à la lumière de recherches récentes, son rôle dans l'harmonisation des pratiques co...

  2. Interview With Jean Laplanche.

    Science.gov (United States)

    Laplanche, Jean; Danon, Gisèle; Lauru, Didier

    2015-10-01

    The starting point for this interview with Jean Laplanche is a question regarding the place of infantile sexuality within psychoanalysis today. Laplanche begins by underscoring the audaciousness of Freud's characterization of infantile sexuality and the significance of the expansion of the field of "the sexual" that this characterization entails. He goes on to outline his celebrated "general theory of seduction." In doing so he explains key terms associated with it, such as the "enigmatic message" and the "fundamental anthropological situation," and clarifies how the theory seeks to account for sexuality in the expanded sense. In particular, Laplanche stresses the intersubjective origins of "drive" sexuality in infancy, its chaotic evolution, its unique economic mode of functioning, and its subsequent conflict with innate "instinctual" sexual impulses that surge forth at puberty. He also positions the general theory of seduction in relation to the important advances made by attachment theory in the field of the adult-child relationship. Throughout the interview, the discussion touches on social contexts, and at points Laplanche outlines positions on topical concerns connected to education, media, and the law, and the importance of rethinking certain psychoanalytic paradigms in an age of new family structures that do not correspond to the nuclear unit.

  3. A CONSTITUIÇÃO DO SUJEITO: UMA REFLEXÃO A PARTIR DE JEAN-PAUL SARTRE

    Directory of Open Access Journals (Sweden)

    Lúcia Cecília da Silva

    2017-05-01

    this object of study has difficulties, which are evident in the different approaches to it, either objectivist or subjectivist ones. In order to contribute to such discussion, this study aims at analyzing how the existentialism of Jean-Paul Sartre approaches the processes of the constitution of the subject. The Sartrean perspective enriches Psychology because, by rejecting reductionisms, it offers a conception that does not dichotomize the phenomenon of objectification-subjectification, since it conceives the subject in the dialectical relation between objectivity and subjectivity. Sartre does not only suggest elements to understand body, consciousness and the world as a human and historical reality, but also elucidates how the subject, who is forged in intersubjectivity, constructs his/her personal and collective history. Keywords: psychology; constitution of the subject; existentialism; Jean-Paul Sartr

  4. Identidad y escenificación de estereotipos en Los negros de Jean Genet

    Directory of Open Access Journals (Sweden)

    Rosario León Pinto

    2016-05-01

    Full Text Available En la obra Los negros del dramaturgo francés Jean Genet nos enfrentamos, de manera muy compleja y evidentemente polémica, al problema de la identidad cultural y racial, del dominio ideológico, de la colonización y el proceso de descolonización, particularmente desde el problema de “lo negro” en el ámbito cultural del colonialismo, centrándose la obra en la problemática en torno a la identidad del ser negro, como una identidad construida por el blanco. Este conflicto identitario es presentado en escena evidenciando y tensionando el artificio teatral. De este modo, en este artículo veremos cómo se escenifica dicho conflicto mediante un uso extremo de los recursos teatrales y del motivo del teatro dentro del teatro, particularmente a partir de personajes que muestran una identidad engañosa, explicitando que son actores representando un rol (reflejo perfecto de la realidad del hombre negro que constantemente representa un papel dado por el blanco, y gestando un espacio posible para la rebelión y liberación de sus propias subjetividades detrás de los diferentes niveles de la representación. Palabra clave: Jean Genet, identidad, colonialismo, postcolonialismo, teatro dentro del teatro.   In the play The Blacks by French dramatist Jean Genet we are faced, in both a complex and controversial manner, with the issues of cultural and racial identity, ideological dominion, colonialism and the process of decolonization as seen from the perspective of “the blackness” issue against the backdrop of colonialism. The play revolves around the problem of identity of being black as one built by the white man. This conflict is staged by overtly showing and exaggerating theatrical artifices. Thus, in this paper we shall discuss how such a conflict is brought onto the stage by heightening theatrical resources, as well as the theme of a play within the play. This theme shows characters bearing an ill-defined identity, revealing them as actors

  5. PROBLEM PENDIDIKAN VIDEO GAMES DALAM PERSPEKTIF TEORI SIMULACRA JEAN BAUDRILLARD

    OpenAIRE

    Siti Murtiningsih, Joko Siswanto, M. Mukhtasar Syamsudin

    2013-01-01

    Abstract: Education Problems of Video Games in the Perspective of Jean Baudrillard’s Theory of Simulacra. In the era of digital age, we are witnessing how video games penetrate children’s daily life and it is believed to have some impacts on their cognitive and affective processes. Referring to hermeneutical approach, the present library research seeks to answer the question whether video games create a real identity or simply forge false consciousness in children. In the first step, the data...

  6. Jeans criteria and stars formation in the Omnes matter-anti-matter supermassive star model; Critere de Jeans et formation d'etoiles dans le modele d'etoile supermassive matiere-antimatiere d'Omnes

    Energy Technology Data Exchange (ETDEWEB)

    Montmerle, Thierry

    1971-10-08

    This research thesis reports the study of the formation of stars in a quasar nucleus by using the Jeans criterion, and by adopting a model made of a super-massive star comprising an anti-matter nucleus surrounded by a matter envelope. After an overview of different observation results, and a presentation of different existing quasar models, the author details the Omnes model and its related problems. He reports the study of opacities to thermal photons (scattering and continuous absorption), and to γ radiation (absorption mechanism, creation of pairs in the interaction between γ rays and medium or between photons). The study of γ radiation transfer in a completely ionised gas is then reported (transfer equations, transfer equation coupling, heating of the semi-infinite medium, application to the nucleus with a plane approximation). Sound speed is then studied without γ (physical conditions, adiabatic case, non relativistic case, relativistic case), and in presence of γ. In the last chapter, the author discusses the application of the Jeans instability criterion to a medium governed by radiation. Results are discussed as well as consequences for the Omes model and for multiple-star models [French] Nous nous proposons d'etudier la formation d'etoiles dans le noyau d'un quasar au moyen du critere de Jeans. Nous adoptons un modele constitue d'une etoile supermassive (M> 10{sup 5} Mo) comprenant un noyau d'antimatiere entoure d'une enveloppe de matiere ('modele d'Omnes'). Apres avoir fait un bref tour d'horizon des divers resultats d'observation obtenus a ce jour et expose les differents modeles de quasar actuellement proposes (chapitre 1), nous decrirons en detail le modele d'Omnes. Nous exposerons un certain nombre de problemes qui lui sont lies, et nous donnerons la motivation du present travail (chapitre 2). Examinant plus particulierement l'opacite du milieu aux photons thermiques et aux photons γ (issus de l'annihilation matiere-antimatiere, nous etablirons

  7. The early evolution of Jean Piaget's clinical method.

    Science.gov (United States)

    Mayer, Susan Jean

    2005-11-01

    This article analyzes the early evolution of Jean Piaget's renowned "clinical method" in order to investigate the method's strikingly original and generative character. Throughout his 1st decade in the field, Piaget frequently discussed and justified the many different approaches to data collection he used. Analysis of his methodological progression during this period reveals that Piaget's determination to access the genuine convictions of children eventually led him to combine 3 distinct traditions in which he had been trained-naturalistic observation, psychometrics, and the psychiatric clinical examination. It was in this amalgam, first evident in his 4th text, that Piaget discovered the clinical dynamic that would drive the classic experiments for which he is most well known.

  8. "Of comics and men: A cultural history of American comic books," by Jean-Paul Gabilliet

    Directory of Open Access Journals (Sweden)

    Drew Morton

    2013-06-01

    Full Text Available Jean-Paul Gabilliet. Of comics and men: A cultural history of American comic books. Translated by Bart Beaty and Nick Nguyen. Jackson: University Press of Mississippi, 2010, hardcover, $55.00 (390p, ISBN 978-1604732672.

  9. Jean-Martin Charcot's Role in the 19th Century Study of Music Aphasia

    Science.gov (United States)

    Johnson, Julene K.; Lorch, Marjorie; Nicolas, Serge; Graziano, Amy

    2013-01-01

    Jean-Martin Charcot (1825-93) was a well-known French neurologist. Although he is widely recognized for his discovery of several neurological disorders and his research into aphasia, Charcot's ideas about how the brain processes music are less well known. Charcot discussed the music abilities of several patients in the context of his "Friday…

  10. Jeans Instability of the Self-Gravitating Viscoelastic Ferromagnetic Cylinder with Axial Nonuniform Rotation and Magnetic Field

    Science.gov (United States)

    Dhiman, Joginder Singh; Sharma, Rajni

    2017-12-01

    The effects of nonuniform rotation and magnetic field on the instability of a self gravitating infinitely extending axisymmetric cylinder of viscoelastic ferromagnetic medium have been studied using the Generalised Hydrodynamic (GH) model. The non-uniform magnetic field and rotation are acting along the axial direction of the cylinder and the propagation of the wave is considered along the radial direction, while the ferrofluid magnetization is taken collinear with the magnetic field. A general dispersion relation representing magnetization, magnetic permeability and viscoelastic relaxation time parameters is obtained using the normal mode analysis method in the linearized perturbation equation system. Jeans criteria which represent the onset of instability of self gravitating medium are obtained under the limits; when the medium behaves like a viscous liquid (strongly coupled limit) and a Newtonian liquid (weakly coupled limit). The effects of various parameters on the Jeans instability criteria and on the growth rate of self gravitating viscoelastic ferromagnetic medium have been discussed. It is found that the magnetic polarizability due to ferromagnetization of medium marginalizes the effect of non-uniform magnetic field on the Jeans instability, whereas the viscoelasticity of the medium has the usual stabilizing effect on the instability of the system. Further, it is found that the cylindrical geometry is more stable than the Cartesian one. The variation of growth rate against the wave number and radial distance has been depicted graphically.

  11. Jean-Paul Martinon, ed. - The Curatorial: A Philosophy of Curating

    Directory of Open Access Journals (Sweden)

    Sofia Romualdo

    2015-12-01

    Full Text Available In the words of Jean-Paul Martinon, this book’s editor, The Curatorial: A Philosophy of Curating originated from a “wish to talk about curating”, the same wish that led to the creation, in 2006, of a practice-led PhD programme at Goldsmiths College, called Curatorial/Knowledge. The anthology features contributions from tutors, guest speakers and students, all of whom delve into what “the curatorial” is and what it might mean in the future. Curating, or the act of organizing exhibitions, paral...

  12. Une mission astronomique de Jean Picard: Le voyage d'Uraniborg

    DEFF Research Database (Denmark)

    Pedersen, Kurt Møller

    1987-01-01

    In order to determine the difference in longitude between Tycho Brahe's observatory on the island of Hven and the new observatory in Paris, the French astronomer Jean Picard travelled to Copenhagen with the most accurate equipment to measure that difference. The mission was a success, he determin...... the difference that was only 10 minutes wrong compared to a modern value and he brought with him back to Paris Ole Roemer. In this paper I analyze Picard scientific achiements and methods while on Hven and at the Round Tower in Copenhagen....

  13. Women in the Looking-Glass: Post-Colonial and Psychoanalytical Techniques in Jean Rhys's Wide Sargasso Sea

    National Research Council Canada - National Science Library

    Despain, Martha

    2004-01-01

    When Jean Rhys takes on the underdog tale of Charlotte Bronte's Bertha Mason, she both moves beyond license by appropriating a popular, Victorian text and imposes limits by choosing a story with an unchangeable ending...

  14. Currículo, universalismo e relativismo: uma discussão com Jean-Claude Forquin Curriculum, universalism and relativism: a discussion with Jean-Claude Forquin

    Directory of Open Access Journals (Sweden)

    Tomaz Tadeu da Silva

    2000-12-01

    Full Text Available O texto discute a conferência do professor Jean-Claude Forquin, proferida em 17 de junho de 1997, por ocasião do seminário internacional comemorativo dos 25 anos dos cursos de p��s-Graduação da Faculdade de Educação da Universidade Federal do Rio de Janeiro. Questiono, sobretudo, a argumentação desenvolvida pelo conferencista em favor de um currículo no qual as "ciências" deveriam figurar como a representação da universalidade do conhecimento, enquanto outras disciplinas, menos "exatas" e mais "culturais", apareceriam como a expressão da relatividade epistemológica. Apresento, em contraposição, uma posição que vê ambos os "tipos" de conhecimento como construções sociais e culturais, sujeitos, igualmente, ao questionamento e à crítica.This article discusses a lecture given by Professor Jean-Claude Forquin on June 17, 1997, at the international seminar celebrating the 25th anniversary of the Graduate Courses of the Faculty of Education (Federal University of Rio de Janeiro. Basically, I question Forquin's argument in favor of a curriculum where the so-called "sciences" would appear as representing a supposed universality of knowledge, whereas the other, less "precise" and more "cultural" disciplines would be seen as the expression of epistemological relativity. My position, in contrast, is that both "types" of knowledge should be viewed as social and cultural constructions, and are therefore subject to the same questioning and criticism.

  15. Le double destin des archives Jean Sénac

    Directory of Open Access Journals (Sweden)

    Hamid Nacer-Khodja

    2014-04-01

    Full Text Available Les archives Jean Sénac (1926‑1973 sont constituées de deux fonds : un fonds déposé à la bibliothèque municipale de Marseille et un autre à la Bibliothèque nationale d’Algérie. Le premier fonds regroupe essentiellement les manuscrits de la période de l’écrivain en France (1950‑1952 et 1954‑1962. Le fonds de la Bibliothèque nationale d’Algérie – le plus riche quantitativement – correspond à deux grandes périodes de la vie et de l’œuvre de Sénac en Algérie, soit de 1926 à 1950 et de 1962 à 1973.

  16. Jean Gadrey, Nouvelle économie, nouveau mythe ?

    Directory of Open Access Journals (Sweden)

    Diane-Gabrielle Tremblay

    2002-10-01

    Full Text Available La « nouvelle économie » est partout dans les médias nord-américains, comme européens. L’ouvrage de Jean Gadrey est rafraîchissant, car il présente une critique et une analyse minutieuse du concept, de son apparition, des développements qui y sont associés, des thèses et idées défendues au nom de la « nouvelle économie ».Comme il le note bien « les mythes mobilisateurs fleurissent, mais la réflexion sur les contours de cet âge et sur les risques sociaux à prévenir est inexistante : les formul...

  17. Jean Piaget: Images of a life and his factory.

    Science.gov (United States)

    Burman, Jeremy Trevelyan

    2012-08-01

    In this article, I use a new book about Jean Piaget to introduce a new historical method: examining "psychological factories." I also discuss some of the ways that "Great Men" are presented in the literature, as well as opportunities for new projects if one approaches the history of the discipline differently and examines the conditions that made that greatness possible. To that end, the article includes many details about Piaget that have never before been discussed in English. Attention is drawn, in particular, to Piaget's collaborators: the hundreds of workers at his factory in Geneva, many of whom were women. (PsycINFO Database Record (c) 2012 APA, all rights reserved).

  18. Jean-Alfred Fournier - the founder of the European venereology and dermatology (on the one hundredth death anniversary

    Directory of Open Access Journals (Sweden)

    O. A. Kisteneva

    2014-01-01

    Full Text Available The article presents a life story of a great French dermatologist and venereologist, one of the founders of the theory of syphilis Jean-Alfred Fournier (1832-1914. It provides data on the published works by Jean-Alfred Fournier, some of which earned him a doctoral degree. It also provides data on Fournier’s election as a member of the French Academy of Medicine in 1879 as well as on the founding of the French Society of Dermatology and Syphiligraphy by Fournier and other French dermatologists in 1889. The article defines the contribution made by Fournier to the development of venereology and practical medicine in the second half of the 19th century and early 20th century.

  19. De dood staat op. Naar een seculier opstandingsverhaal − een onderzoek met Jean-Luc Nancy

    NARCIS (Netherlands)

    Kate, L. ten

    2013-01-01

    In his philosophical project of a ‘deconstruction of monotheism’, Jean-Luc Nancy explores the hypothesis that the historical roots of secularization should be traced back to the beginnings of the monotheistic traditions. The secular is not exclusively a feature of modern culture. The complex

  20. Gender, identity and power: a reflection on Wide sargasso sea, by Jean Rhys

    Directory of Open Access Journals (Sweden)

    Shirley de Souza Gomes Carreira

    2012-12-01

    Full Text Available This work aims to analyze Jean Rhys’s novel Wide Sargasso Sea in order to display the author’s strategy to deconstruct Charlotte Brontë’s eurocentric discourse in Jane Eyre, granting voice to the colonized subject, besides allowing a “dive” into the web woven by patriarchy, getting men and women stuck in predetermined social roles.

  1. The Enunciation of the Subject: Sharing Jean-Luc Nancy's Singular Plural in the Classroom

    Science.gov (United States)

    Collins, Ashok

    2015-01-01

    This article seeks to explore the implications of Jean-Luc Nancy's reading of the subject for educational philosophy by connecting his re-interpretation of Descartes to his later thinking on what he names the ontological singular plural. Nancy's re-imagining of the Cogito coalesces around the figure of the mouth ("la bouche") through…

  2. The evidence of film and the presence of the world: Jean-Luc Nancy's cinematic ontology

    NARCIS (Netherlands)

    Früchtl, J.; Kavanaugh, L.

    2010-01-01

    Following Deleuze's theory, the emergence of the "time-image" following the Second World War led to (our relationship to) the world disappearing from film. Following Jean-Luc Nancy, the Iranian film-maker Abbas Kiarostami is a privileged witness to a cinema that liberates itself from a "postmodern"

  3. When the Jeans Do Not Fit: How Stellar Feedback Drives Stellar Kinematics and Complicates Dynamical Modeling in Low-mass Galaxies

    Energy Technology Data Exchange (ETDEWEB)

    El-Badry, Kareem; Quataert, Eliot [Department of Astronomy, University of California, Berkeley, CA (United States); Wetzel, Andrew R.; Hopkins, Philip F. [TAPIR, California Institute of Technology, Pasadena, CA (United States); Geha, Marla [Department of Astronomy, Yale University, New Haven, CT (United States); Kereš, Dusan; Chan, T. K. [Department of Physics, Center for Astrophysics and Space Sciences, University of California at San Diego, La Jolla (United States); Faucher-Giguère, Claude-André, E-mail: kelbadry@berkeley.edu [Department of Physics and Astronomy and CIERA, Northwestern University, Evanston, IL (United States)

    2017-02-01

    In low-mass galaxies, stellar feedback can drive gas outflows that generate non-equilibrium fluctuations in the gravitational potential. Using cosmological zoom-in baryonic simulations from the Feedback in Realistic Environments project, we investigate how these fluctuations affect stellar kinematics and the reliability of Jeans dynamical modeling in low-mass galaxies. We find that stellar velocity dispersion and anisotropy profiles fluctuate significantly over the course of galaxies’ starburst cycles. We therefore predict an observable correlation between star formation rate and stellar kinematics: dwarf galaxies with higher recent star formation rates should have systemically higher stellar velocity dispersions. This prediction provides an observational test of the role of stellar feedback in regulating both stellar and dark-matter densities in dwarf galaxies. We find that Jeans modeling, which treats galaxies as virialized systems in dynamical equilibrium, overestimates a galaxy’s dynamical mass during periods of post-starburst gas outflow and underestimates it during periods of net inflow. Short-timescale potential fluctuations lead to typical errors of ∼20% in dynamical mass estimates, even if full three-dimensional stellar kinematics—including the orbital anisotropy—are known exactly. When orbital anisotropy is not known a priori, typical mass errors arising from non-equilibrium fluctuations in the potential are larger than those arising from the mass-anisotropy degeneracy. However, Jeans modeling alone cannot reliably constrain the orbital anisotropy, and problematically, it often favors anisotropy models that do not reflect the true profile. If galaxies completely lose their gas and cease forming stars, fluctuations in the potential subside, and Jeans modeling becomes much more reliable.

  4. When the Jeans Do Not Fit: How Stellar Feedback Drives Stellar Kinematics and Complicates Dynamical Modeling in Low-mass Galaxies

    International Nuclear Information System (INIS)

    El-Badry, Kareem; Quataert, Eliot; Wetzel, Andrew R.; Hopkins, Philip F.; Geha, Marla; Kereš, Dusan; Chan, T. K.; Faucher-Giguère, Claude-André

    2017-01-01

    In low-mass galaxies, stellar feedback can drive gas outflows that generate non-equilibrium fluctuations in the gravitational potential. Using cosmological zoom-in baryonic simulations from the Feedback in Realistic Environments project, we investigate how these fluctuations affect stellar kinematics and the reliability of Jeans dynamical modeling in low-mass galaxies. We find that stellar velocity dispersion and anisotropy profiles fluctuate significantly over the course of galaxies’ starburst cycles. We therefore predict an observable correlation between star formation rate and stellar kinematics: dwarf galaxies with higher recent star formation rates should have systemically higher stellar velocity dispersions. This prediction provides an observational test of the role of stellar feedback in regulating both stellar and dark-matter densities in dwarf galaxies. We find that Jeans modeling, which treats galaxies as virialized systems in dynamical equilibrium, overestimates a galaxy’s dynamical mass during periods of post-starburst gas outflow and underestimates it during periods of net inflow. Short-timescale potential fluctuations lead to typical errors of ∼20% in dynamical mass estimates, even if full three-dimensional stellar kinematics—including the orbital anisotropy—are known exactly. When orbital anisotropy is not known a priori, typical mass errors arising from non-equilibrium fluctuations in the potential are larger than those arising from the mass-anisotropy degeneracy. However, Jeans modeling alone cannot reliably constrain the orbital anisotropy, and problematically, it often favors anisotropy models that do not reflect the true profile. If galaxies completely lose their gas and cease forming stars, fluctuations in the potential subside, and Jeans modeling becomes much more reliable.

  5. Public Lecture | Making the most of your presentation | By Jean-Luc Doumont | 26 June

    CERN Multimedia

    2014-01-01

    Making the most of your presentation, by Dr. Jean-Luc Doumont (Principiae).   Thursday 26 June 2014 from 14:30 to 16:30 at CERN (4-3-006 - TH Conference Room) Want to participate? Apply here. Strong presentation skills are a key to success for engineers and scientists, yet many of these do not exploit their potential to reach the audience. Systematic as they can be in their work, they go at it intuitively, with much good will but with results that could be much better. In this talk, Dr. Doumont proposes a systematic way to prepare and deliver an oral presentation: he covers structure, slides, and delivery, as well as stage fright. An engineer (Louvain) and PhD in applied physics (Stanford), Dr. Jean-Luc Doumont is acclaimed worldwide for his no-nonsense approach, his highly applicable, often life-changing recommendations on a wide range of topics, and Trees, maps, and theorems, his book about “effective communication for rational minds”. He had his first rese...

  6. Hydrogen escape from Mars enhanced by deep convection in dust storms

    Science.gov (United States)

    Heavens, Nicholas G.; Kleinböhl, Armin; Chaffin, Michael S.; Halekas, Jasper S.; Kass, David M.; Hayne, Paul O.; McCleese, Daniel J.; Piqueux, Sylvain; Shirley, James H.; Schofield, John T.

    2018-02-01

    Present-day water loss from Mars provides insight into Mars's past habitability1-3. Its main mechanism is thought to be Jeans escape of a steady hydrogen reservoir sourced from odd-oxygen reactions with near-surface water vapour2, 4,5. The observed escape rate, however, is strongly variable and correlates poorly with solar extreme-ultraviolet radiation flux6-8, which was predicted to modulate escape9. This variability has recently been attributed to hydrogen sourced from photolysed middle atmospheric water vapour10, whose vertical and seasonal distribution is only partly characterized and understood11-13. Here, we report multi-annual observational estimates of water content and dust and water transport to the middle atmosphere from Mars Climate Sounder data. We provide strong evidence that the transport of water vapour and ice to the middle atmosphere by deep convection in Martian dust storms can enhance hydrogen escape. Planet-encircling dust storms can raise the effective hygropause (where water content rapidly decreases to effectively zero) from 50 to 80 km above the areoid (the reference equipotential surface). Smaller dust storms contribute to an annual mode in water content at 40-50 km that may explain seasonal variability in escape. Our results imply that Martian atmospheric chemistry and evolution can be strongly affected by the meteorology of the lower and middle atmosphere of Mars.

  7. The Judas Effect: Betrayal in Jean-Luc Godard’s Breathless

    Directory of Open Access Journals (Sweden)

    Vlad Dima

    2016-01-01

    Full Text Available This article revisits the ending of Jean-Luc Godard’s Breathless (1960 in an attempt to untangle the complicated relationship between the two main characters, and to claim that they are characters that belong to no identifiable genre. Instead, they come to life as characters at the intersection point of existentialism, creationism, and two radically different genres, film noir and neorealism. In essence, they are characters without a genre, always out of place, and their existential drifting generates a Judas effect—a trope that establishes betrayal and sacrifice as necessary narrative tools and that suspends the classical (cinematic Oedipal cycle.

  8. The Modern Idea of Progress by Jean A. Condorcet

    Directory of Open Access Journals (Sweden)

    Podgórski Ryszard

    2017-12-01

    Full Text Available The 18th century is the opening to cognitive progress (epistemology which becomes the core of historical progress. They were defined more precisely by Robert Turgot (1727-1781. Turgot’s lecture entitled Discours sur l´histoire universalle of 1750 significantly contributed to the notion of “progress”. The lecture presented a broad programme of historical studies whose object was humanity striving for perfection. Turgot’s programme was implemented by his friend Jean Antoine de Condorcet (1743-1794. He contained the interpretation of his programme of historical progress in Esquisse d´un tableau historique des progrés de l´esprit humain (A sketch of the picture of progress of human spirit through the ages. It was 1794 and in that year Condorcet was imprisoned. Jean Antoine de Condorcet proposed a secular mechanism of progress which was to take place through development of knowledge and science. In his outline of the development of humanity, Condorcet emphasised that the progress of humanity occurs because of efforts of people without interference of divine factors. Man is able to improve due to his own mind. The history of humanity is presented in his philosophy as a linear, continuous process taking place along a rising line, whereas the description of progress includes both past times and the future. In this way, Condorcet showed the perspective of further development of humanity in the direction of a system consistent with the law of nature and the complete elimination of suffering. This view of Condorcet motivated August Comte (1798-1857 when he built the “first philosophy”, and Claude Adrien Helvétius (1715-1771 and Paul Henry d´Holbach (1723-1789.

  9. Je vous salue Marie de Jean-Luc Godard : modalités et enjeux d’un retour du religieux au cinéma “Hail Mary, full of grace”, a film by Jean-Luc Godard

    Directory of Open Access Journals (Sweden)

    Natalie Malabre

    2012-06-01

    Full Text Available Est-il possible de filmer un sujet aussi sensible que celui de la virginité de Marie en dehors des références aux canons religieux ? Ce fut le défi de Jean-Luc Godard au milieu des années 1980, lorsqu’il réalisa Je vous salue Marie. Sans surprise, certains catholiques manifestèrent leur opposition. Mais d’autres essayèrent d’expliquer et de soutenir cette manière non traditionnelle d’approcher le mystère de la transcendance.Is it possible to film religious subject, a very sensitive one like the virginity of Mary, out of the references of religious stances? That was the challenge of Jean-Luc Godard in the middle of the 80’s when he promoted “Je vous salue Marie”. Without surprise, some Catholics demonstrated their opposition. But some of them tried to explain and support the untraditional way to approach the mystery of transcendence.

  10. Depaule Jean-Charles (avec la collaboration de Jean-Luc Arnaud, À travers le mur, Marseille, éditions Parenthèses, collection Eupalinos, 2014, 219 p.

    Directory of Open Access Journals (Sweden)

    Anna Madoeuf

    2014-09-01

    Full Text Available Saluons la réédition, aux éditions Parenthèses, dans la collection Eupalinos, d’À travers le mur, de Jean-Charles Depaule, ouvrage qui est tant une contribution rare et originale aux études urbaines, qu’un opus d’anthropologie sur l’espace habité, de même qu’une source de références multiples, notamment littéraires. « Rêver des lourdes portes, des passages en chicane et plus encore, peut-être des moucharabiehs perdus […] ». Cette sollicitation onirique et énigmatique, quatrième de couverture ...

  11. Profiles of international archives: Les archives Jean Piaget, University of Geneva, Switzerland.

    Science.gov (United States)

    Burman, Jeremy Trevelyan

    2013-05-01

    This research report provides a look behind closed doors at the Jean Piaget Archives in Geneva, Switzerland. It situates the potential visitor, contextualizes the Archives in its own history, and then describes what scholars can expect to find. New details about Piaget's views on Equal Rights and Equal Pay are also provided, including a look at how they affected the women who worked his factory (esp. Bärbel Inhelder). (PsycINFO Database Record (c) 2013 APA, all rights reserved).

  12. Jean Rotz and the Marine Chart, 1542

    Science.gov (United States)

    Taylor, E. G. R.

    This paper was first published in the Journal in 1954 (Vol. 7, p. 138). It is followed by comments from Michael Richey.At the time (1542) when Jean Rotz presented Henry VIII with a variation compass, and an accompanying treatise on its making and use, the question of magnetic variation was an acute one. It formed part of a wider controversy concerning the general validity of the sea-chart which had been raised among seamen. As to this, Dr Pedro Nunez, writing a treatise in 1537 addressed to his friend and pupil the Infante Dom Luys of Portugal, said that there were skilled pilots who derided the chart and declared it to be - the falsest thing in the world. Hastening to its defence, Nunez dealt at length with the navigating errors introduced by ignoring the convergence of the meridians, and showed besides that a rhumb, or line of constant bearing was a spiral curve on the globe.

  13. ¿Resistencia intelectual y apoyo pasivo de Vichy? Reflexiones sobre una paradoja en el itinerario de Jean-Paul Sartre

    Directory of Open Access Journals (Sweden)

    Ingrid Galster

    2012-02-01

    Full Text Available La actitud de Jean-Paul Sartre durante la Ocupación alemana sigue siendo la materia de muchos debates nutridos por clichés. Mientras que sus detractores en los medios (como últimamente Michel Onfray pintan la imagen de un arribista que se hizo aplaudir en el teatro por oficiales nazis y periodistas colaboracionistas, sus hagiógrafos defienden a un resistente sin mancha. El presente estudio corrige estas representaciones esquemáticas para proponer, fundamentado en documentos, un retrato complejo. Tiene en cuenta tanto la mala reputación que tuvo Sartre con razón en el  campo de la ideología dominante como el hecho de que escribió su literatura de resistencia ocupando el puesto de un colega judío excluído de la Educación Nacional por el regimen antisemita de Vichy.Palabras clave: Jean-Paul Sartre, Ocupación alemana, Vichy, Resistencia, legislación antisemita______________________Abstract:Jean-Paul Sartre’s attitude during the German Occupation of France is still the matter of numerous discussions full of stereotypes. Whereas his detractors in the French media (currently for instance Michel Onfray paint the image of an arriviste who accepted to be applauded, on stage, by nazi officers and collaborating journalists, his hagiographers defend a resister without stain. The present study’s aim is to correct these schematic representations; it proposes a complex portrait based on documents. It takes into account the bad reputation Sartre enjoyed with complete justification in the area of dominant ideology as well as the economic basis on which he wrote his literature of resistance: the position inherited from a Jewish colleage excluded from the National Education by the anti-Semitic Vichy regime.Keywords: Jean-Paul Sartre, German Occupation, Vichy, Resistance, anti-Semitic laws

  14. Jeans that fit: weighing the mass of the Milky Way analogues in the ΛCDM universe

    Science.gov (United States)

    Kafle, Prajwal R.; Sharma, Sanjib; Robotham, Aaron S. G.; Elahi, Pascal J.; Driver, Simon P.

    2018-04-01

    The spherical Jeans equation is a widely used tool for dynamical study of gravitating systems in astronomy. Here, we test its efficacy in robustly weighing the mass of Milky Way analogues, given they need not be in equilibrium or even spherical. Utilizing Milky Way stellar haloes simulated in accordance with Λ cold dark matter (ΛCDM) cosmology by Bullock and Johnston and analysing them under the Jeans formalism, we recover the underlying mass distribution of the parent galaxy, within distance r/kpc ∈ [10, 100], with a bias of ˜ 12 per cent and a dispersion of ˜ 14 per cent. Additionally, the mass profiles of triaxial dark matter haloes taken from the SURFS simulation, within scaled radius 0.2 < r/rmax < 3, are measured with a bias of ˜ - 2.4 per cent and a dispersion of ˜ 10 per cent. The obtained dispersion is not because of Poisson noise due to small particle numbers as it is twice the later. We interpret the dispersion to be due to the inherent nature of the ΛCDM haloes, for example being aspherical and out-of-equilibrium. Hence, the dispersion obtained for stellar haloes sets a limit of about 12 per cent (after adjusting for random uncertainty) on the accuracy with which the mass profiles of the Milky Way-like galaxies can be reconstructed using the spherical Jeans equation. This limit is independent of the quantity and quality of the observational data. The reason for a non-zero bias is not clear, hence its interpretation is not obvious at this stage.

  15. 2006 USGS/NPS/NASA Experimental Advanced Airborne Research Lidar (EAARL): Jean Lafitte National Historical Park and Preserve

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — A first surface/bare earth elevation map (also known as a Digital Elevation Model, or DEM) of the Jean Lafitte National Historical Park and Preserve in Louisiana was...

  16. The copy of the Essays of Jean Rey, used by Bayen and Gobet, at the BIU Sante, pole Pharmacie.

    Science.gov (United States)

    Lafont, Olivier

    2016-06-01

    The copy of the innovative book written by Jean Rey in 1630, entitied : The Essays on the reasons why the weight of stain and lead increased when they were burnt, which is nowadays kept in the BIU Sante, pole Pharmacie, proved to be the authentic copy which had been used by Pierre Bayer when he rediscovered Jean Rey's Works. It was also the same copy that Gobey used when he real- ized his new edition of the Essays in 1777. This copy first belonged to M. de Villars from La Rochelle, and then was acquired by M. de Villiers, who accepted to lend it to Bayen. The probes for this identification were detailed in the article.

  17. Evolution of the phase-space density and the Jeans scale for dark matter derived from the Vlasov-Einstein equation

    International Nuclear Information System (INIS)

    Piattella, O.F.; Rodrigues, D.C.; Fabris, J.C.; Pacheco, J.A. de Freitas

    2013-01-01

    We discuss solutions of Vlasov-Einstein equation for collisionless dark matter particles in the context of a flat Friedmann universe. We show that, after decoupling from the primordial plasma, the dark matter phase-space density indicator Q = ρ/(σ 1D 2 ) 3/2 remains constant during the expansion of the universe, prior to structure formation. This well known result is valid for non-relativistic particles and is not ''observer dependent'' as in solutions derived from the Vlasov-Poisson system. In the linear regime, the inclusion of velocity dispersion effects permits to define a physical Jeans length for collisionless matter as function of the primordial phase-space density indicator: λ J = (5π/G) 1/2 Q −1/3 ρ dm −1/6 . The comoving Jeans wavenumber at matter-radiation equality is smaller by a factor of 2-3 than the comoving wavenumber due to free-streaming, contributing to the cut-off of the density fluctuation power spectrum at the lowest scales. We discuss the physical differences between these two scales. For dark matter particles of mass equal to 200 GeV, the derived Jeans mass is 4.3 × 10 −6 M ⊙

  18. Proyecto de factibilidad para la creación de una Empresa productora de Jeanïs en la ciudad de Quito - Ecuador.

    OpenAIRE

    Carrillo Gavilánez, Verónica Paola

    2007-01-01

    El sector de la confección de jeans ha sido altamente fragmentado y de tipo familiar en el país. Dentro de la estrategia para incrementar su competitividad internacional, a raíz de la apertura comercial de inicios de los 90, el ingreso de empresas textiles con plantas de confección propias cambió significativamente el panorama de la confección nacional de jeans el cual se vio súbitamente inyectado con mejores prácticas gerenciales y nuevas estrategias de comercialización y vent...

  19. Language of the Theatre of the Absurd: Jean Tardieu, “Box Office”

    OpenAIRE

    Kol, Mustafa

    2011-01-01

    Jean Tardieu’s short play Le Guichet, which has been considered within the AbsurdTheatre part Tradition, is in the work of Theatre of chamber. The play presents a very strikingpart from the rhythm of like; It covers the unrelatedness of human relationships, lonelinessof humans, being in the gap, searching for happiness in the world of dream. They confrontto a customer and clerk who is sitting on a desk. Actually, the customer indulges into abureaucratic questioned with a humorous and ironic t...

  20. Aplicação da Teoria do Cuidado Transpessoal de Jean Watson: uma década de produção brasileira Aplicación de la Teoría del Cuidado Transpersonal de Jean Watson: una década de producción brasileña Jean Watson's Theory of Human Caring: a decade of Brazilian publications

    Directory of Open Access Journals (Sweden)

    Luciane Favero

    2009-01-01

    Full Text Available Esta revisão sistemática objetivou descrever e analisar a aplicação da Teoria do Cuidado Transpessoal de Jean Watson nas pesquisas divulgadas em publicações de Enfermagem brasileiras dos últimos dez anos. O levantamento bibliográfico abrangeu 34 produções científicas selecionadas nas bases de dados eletrônicas MEDLINE (MEDLARS [Medical Literature Analysis and Retrieval System] On-line, LILACS (Literatura Latino Americana e do Caribe em Ciências da Saúde, BDENF (Base de dados de Enfermagem e SciELO (Scientific Electronic Library On-line, que após aplicação dos critérios de inclusão estabelecidos, compuseram a amostra do estudo. Os resultados apontaram que a Região Sul concentra 61,8% das produções referidas ao tema de estudo, que ela pode ser aplicada nos níveis de atenção primária, secundária e terciária e que 64,7% das produções utilizam os fatores de cuidado propostos por Jean Watson em 1979. Emerge a necessidade de aprimoramento das pesquisas acerca da transformação ocorrida na Teoria do Cuidado Transpessoal, com abordagem do Processo Clinical Caritas, porém como são escassos os estudos referentes a esta temática, dificultam sua utilização prática.Esta revisión sistemática tuvo como objetivo describir y analizar la aplicación de la Teoría del Cuidado Transpersonal de Jean Watson en las investigaciones divulgadas en publicaciones de Enfermería brasileñas de los últimos diez años. El levantamiento bibliográfico abarcó 34 producciones seleccionadas en las bases de datos electrónicas MEDLINE (MEDLARS [Medical Literature Analysis and Retrieval System] On-line, LILACS (Literatura Latinoamericana y del Caribe en Ciencias de la Salud, BDENF (Base de datos de Enfermería y SciELO (Scientific Electronic Library On-line, que después de la aplicación de los criterios de inclusión establecidos, compusieron la muestra del estudio. Los resultados señalaron que la región Sur concentra el 61,8% de las

  1. Jean-Martin Charcot, father of modern neurology: an homage 120 years after his death

    OpenAIRE

    Gomes, Marleide da Mota; Engelhardt, Eliasz

    2013-01-01

    Jean-Martin Charcot was a pioneer in a variety of subjects, including nervous system diseases; anatomy; physiology; pathology; and diseases of ageing, joints, and lungs. His medical achievements were mainly based on his anatomopathological proficiency, his observation, and his personal thoroughness that favored the delineation of the nosology of the main neurological diseases, including multiple sclerosis, amyotrophic lateral sclerosis, Parkinson’s disease, peroneal muscular atrophy, and hyst...

  2. The Role of Trustworthiness in Teaching: An Examination of "The Prime of Miss Jean Brodie"

    Science.gov (United States)

    Katz, Michael S.

    2014-01-01

    The purpose of this paper is to examine the role that trustworthiness plays in the ability of teachers to function as moral role models. Through exploration of Muriel Spark's novel, "The Prime of Miss Jean Brodie," I explain some of the central features of trustworthiness as a moral virtue and suggest how these features are critical…

  3. A Biographic Comparison Tracing the Origin of Their Ideas of Jean Piaget and Lev Vygotsky.

    Science.gov (United States)

    Pass, Susan

    This paper compares the early life, background, and education of Jean Piaget and Lev Vygotsky. It makes the case that an adaptation of the curve developed by C. Quigley can be used to trace the motivations of both Piaget and Vygotsky in creating their respective theories. The analysis also reveals the adversity that each man faced. Although they…

  4. Geometry, analysis and probability in honor of Jean-Michel Bismut

    CERN Document Server

    Hofer, Helmut; Labourie, François; Jan, Yves; Ma, Xiaonan; Zhang, Weiping

    2017-01-01

    This volume presents original research articles and extended surveys related to the mathematical interest and work of Jean-Michel Bismut. His outstanding contributions to probability theory and global analysis on manifolds have had a profound impact on several branches of mathematics in the areas of control theory, mathematical physics and arithmetic geometry. Contributions by: K. Behrend N. Bergeron S. K. Donaldson J. Dubédat B. Duplantier G. Faltings E. Getzler G. Kings R. Mazzeo J. Millson C. Moeglin W. Müller R. Rhodes D. Rössler S. Sheffield A. Teleman G. Tian K-I. Yoshikawa H. Weiss W. Werner The collection is a valuable resource for graduate students and researchers in these fields.

  5. Assistência em Enfermagem e Jean Watson: Uma reflexão sobre a empatia

    Directory of Open Access Journals (Sweden)

    Roberta Maria Savieto

    2016-03-01

    Full Text Available Resumo Objetivo: Relacionar a empatia com a Teoria do Cuidado Humano, de Jean Watson, no contexto atual da Enfermagem. Métodos: Trata-se de um ensaio teórico-reflexivo que propõe uma discussão acerca da empatia e sua relação com a Teoria do Cuidado Humano, de Jean Watson, na prática contemporânea da Enfermagem. Resultado: É apresentado o processo Clinical Caritas e cada elemento de cuidado que o compõe visando propor e discutir as conexões com a empatia na assistência em Enfermagem. Torna-se imperioso aliar aspectos técnicos e humanísticos na oferta do cuidado de Enfermagem, além de resgatar a valorização da abordagem da empatia na formação de profissionais da saúde, bem como na continuidade dos estudos após a graduação. Conclusão: Entende-se que essa reflexão pode contribuir para a reorganização de ideias e conceitos sobre aprimoramentos essenciais que se mostram necessários à prática atual da Enfermagem, além de reforçar seu crescimento enquanto ciência.

  6. Unaffectedness and Rare Eurythmics: Carl Koch, Jean Renoir, Luchino Visconti and the Production of Tosca (1939/41)

    NARCIS (Netherlands)

    Blom, I.L.

    2017-01-01

    Tosca (1941) is a curious and intriguing case in film history. It was originally begun by French director Jean Renoir, but finished by his German screenwriter-turned-director Carl Koch. Koch’s wife Lotte Reiniger and the young Luchino Visconti contributed to the film, while its producer was the

  7. Jean-Jacques Rousseau on Adult Education and Revolution. Paradigma of Radical, Pedagogical Thought. 2nd Revised Edition.

    Science.gov (United States)

    Dame, Frederick William

    This book explores Jean-Jacques Rousseau's educational philosophy, as expressed in his key works, and applies that philosophy to adult education and revolution. The titles and topics of the book's seven chapters are as follows: (1) "L'Invitation: Raison d'Etre" (prelude, statement, significance, the process, assumptions and limitations);…

  8. The importance of hydraulic groundwater theory in catchment hydrology: The legacy of Wilfried Brutsaert and Jean-Yves Parlange

    NARCIS (Netherlands)

    Troch, P.A.A.; Berne, A.D.; Harman, C.; Hilberts, A.G.J.; Lyon, S.W.; Paniconi, C.; Pauwels, V.R.N.; Rupp, D.E.; Selker, J.S.; Teuling, A.J.; Uijlenhoet, R.; Verhoest, N.E.C.

    2013-01-01

    Based on a literature overview, this paper summarizes the impact and legacy of the contributions of Wilfried Brutsaert and Jean-Yves Parlange (Cornell University) with respect to the current state-of-the-art understanding in hydraulic groundwater theory. Forming the basis of many applications in

  9. The importance of hydraulic groundwater theory in catchment hydrology: The legacy of Wilfried Brutsaert adn Jean-Yves Parlange

    NARCIS (Netherlands)

    Troch, P.A.; Berne, A.; Bogaart, P.W.; Harman, C.; Hilberts, A.G.J.; Lyon, S.W.; Paniconi, C.; Pauwels, V.R.N.; Rupp, D.E.; Selker, J.S.; Teuling, A.J.; Uijlenhoet, R.; Verhoest, N.E.C.

    2013-01-01

    Based on a literature overview, this paper summarizes the impact and legacy of the contributions of Wilfried Brutsaert and Jean-Yves Parlange (Cornell University) with respect to the current state-of-the-art understanding in hydraulic groundwater theory. Forming the basis of many applications in

  10. El mito de Orestes en Les mouches de Jean-Paul Sartre y El pan de todos de Alfonso Sastre: La necesidad de la acción

    Directory of Open Access Journals (Sweden)

    L. Rovecchio Antón L.

    2012-08-01

    Full Text Available ENIn Les mouches and El pan de todos, Jean-Paul Sartre and Alfonso Sastre speak about the mythological figure of Orestes to reveal the problems of their society. In this article I will focus on the analysis of these two plays and, more specifically, the question of the necessity of the action, which is closely linked with human freedom. A freedom based on choosing a way that leads to direct action or passivity. A choice that, in turn, becomes the essence of human being.Keywords: Jean-Paul Sartre, Alfonso Sastre, Orestes, freedom, action.  ESEn Les mouches y El pan de todos, Jean-Paul Sartre y Alfonso Sastre discurren sobre la figura mitológica de Orestes para revelarnos los problemas de la sociedad que les rodea. En este artículo me centraré en el análisis de estas dos piezas teatrales y, más concretamente, en la cuestión de la necesidad de la acción, que está íntimamente ligada con la libertad del hombre. Una libertad que se basa en la elección de un camino que lleva a la actuación directa o a la pasividad. Una elección que, a su vez, se convierte en la esencia del ser humano.Palabras claves: Jean-Paul Sartre, Alfonso Sastre, Orestes, libertad, acción.

  11. Jean Luc Nancy and the community: trascendence and immanence, ecstasy and death

    Directory of Open Access Journals (Sweden)

    Edgar Straehle Porras

    2012-01-01

    Full Text Available The community is one of the recurring themes of political philosophy today, especially by streams as communitarianism. Jean Luc Nancy has problematized this notion and tried to free it from any trace of what might be a thought or identity politics. The community is not the affirmation of a being of us but the breakdown of any form of essentialism which entails the need to recognize the role of otherness and difference. Hence, linking the community to a finitude that relates to concepts such as death, “clinamen”, transcendence and especially the absence of Oeuvre

  12. Man with a Mission: Jean-Dominique Cassini

    Science.gov (United States)

    Belkora, Leila

    2004-03-01

    Jean-Dominique Cassini, for whom the Cassini mission to Saturn is named, is best known for his early understanding of that planet's rings. This article is an overview of his influential career in astronomy and other scientific fields.= Born in Italy in1625 and formally educated at an early age, he was a professor of astronomy at the University of Bologna, a leading center of learning in Europe of the time. He was an early observer of Jupiter, Mars, and Venus. He is best known for constructing a giant pinhole camera in a cathedral that he used with a meridian line on the floor to track the Sun's image through the year, thus providing the Catholic Church with a reliable calendar. Cassini also used the pinhole camera observations to calculate the variation in the distance between the Sun and Earth, thus lending support to the Copernican (Sun-centered) view of the solar system. Cassini moved to Paris at the request of King Louis XIV, originally to oversee the surveying needed for a new map system of France, but ultimately he took over as the director of the Paris Observatory. Cassini's descendants ran the observatory there for the following century.

  13. Model for common growth of supermassive black holes, bulges and globular star clusters: Ripping off Jeans clusters

    NARCIS (Netherlands)

    Nieuwenhuizen, T.M.

    2012-01-01

    It is assumed that a galaxy starts as a dark halo of a few million Jeans clusters (JCs), each of which consists of nearly a trillion micro brown dwarfs, MACHOs of Earth mass. JCs in the galaxy center heat up their MACHOs by tidal forces, which makes them expand, so that coagulation and star

  14. Os estudos cognitivos da memória de Jean Piaget e Barbel Inhelder

    OpenAIRE

    Ericeira, Ronald Clay dos Santos; Parrat-Dayan, Silvia

    2017-01-01

    O objetivo do artigo é revisitar um tema que inadequadamente é considerado secundário nos estudos piagetianos, a saber: a memória. Nosso foco será revitalizar textos sobre esta temática produzidos por Jean Piaget e colaboradores, principalmente Barbel Inhelder, como os livros Intelligence et Mémoire e L’image mentale chez l’enfant. Para além de sua importância histórica, estes textos são intelectualmente instigantes de diversas maneiras. Primeiro, eles propõem uma teoria geral da memória, que...

  15. [Jean-Louis-Paul Denucé (1824-1889): A forgotten pioneer of plastic surgery].

    Science.gov (United States)

    Marck, K W; Martin, D

    2016-02-01

    The authors propose to define as main characterization of plastic reconstructive surgery the conceptual thinking that leads to a rational choice of an operative treatment. Conceptual thinking in plastic surgery started halfway the nineteenth century with the first schematic representations of the operative procedures available at that time, in which Von Ammon and Baumgarten, Szymanowski and Denucé played a prominent role. These four authors and their works are presented with special attention for the less known of them, Jean-Paul Denucé, surgeon in Bordeaux. Copyright © 2015 Elsevier Masson SAS. All rights reserved.

  16. THINKING ART, POETRY AND LITERATURE OF PERSPECTIVE BY JEAN-LUC NANCY

    Directory of Open Access Journals (Sweden)

    José Oleriano Monteiro Filho

    2010-07-01

    Full Text Available Jean-Luc Nancy, one of the most influential philosophers of today, is part of a group to some extent antagonistic. Marked by Heidegger's phenomenology, for a certain Hegelianism and the grounds of literary criticism of Maurice Blanchot, Nancy is coming from philosophers like Derrida and Philippe Lacoue-Labarthe. He teaches philosophy at the Faculty of Philosophy, Science of Language and Communication at the University of Strasbourg. Author of several works, his thoughts are evoked by quotations from scholarly works in many different areas. In this study, without attempting to exhaust the subject, we will discuss art, poetry and literature in light of the thought of Nancy, also featuring, when needed, the help of other established names.

  17. Profile of a leader. Alena Jean MacMaster: administrator, educator, professional activist and community advocate.

    Science.gov (United States)

    Gautreau, G; Winans, P

    1999-01-01

    This paper profiles Alena Jean MacMaster, an extraordinary nurse leader, activist, visionary and humanitarian from New Brunswick. Her determination and drive were instrumental in fostering the development and progression of health care, nursing education and nursing services at the local, provincial, federal and international levels. "First, loyalty to the institution in which you serve. The patient is the most important person in the entire institution," was Miss MacMaster's guiding principle throughout her career.

  18. Der vergeschlechtlichte Staat: zum Verhältnis von Freiheit, Geschlecht und Staat bei Jean-Jacques Rousseau

    OpenAIRE

    Nagy, Nicola

    2017-01-01

    "Im Beitrag werden die strategischen und systematischen Funktionen sowie die Bedeutung der von Jean-Jacques Rousseau beschriebenen Geschlechtscharaktere und der darauf bauenden Ordnung des Geschlechterverhältnisses im Rahmen der konkreten Ausgestaltung und Umsetzung seines Modells des Staates sichtbar gemacht. Bemerkenswert ist die Tatsache, dass die Möglichkeitsbedingungen (Gemeinwohlorientierung) von Rousseaus Republik, mit deren Hilfe die Herstellung und der Erhalt der bürgerlichen Freihei...

  19. EL PSICOANÁLISIS EXISTENCIAL DE JEAN-PAUL SARTRE

    Directory of Open Access Journals (Sweden)

    Alfonso Rodríguez M.

    2001-01-01

    Full Text Available Esta ponencia se refiere al aparte «El psicoanálisis existencial», sección I del capítulo II de la cuarta parte del libro El ser y la nada, de Jean-Paul Sartre (JPS, publicado por ediciones Gallimard en 1943. Este aparte del libro básicamente define lo que entiende JPS por psicoanálisis existencial, por oposición a los llamados por él «psicoanálisis empírico» y «psicoanálisis de Freud y sus discípulos». Este capítulo es además importante porque aquí se encuentran varios de los temas más recurrentes en la filosofía sartriana, como son los temas de la libertad, Dios como para– sí del hombre y la razón como luz que descubre las últimas evidencias. A pesar de la reconocida «inspiración freudiana», además de Freud, este aparte arremete contra algunos de los pensadores que critica la obra sartriana: Kant, Nietzsche, Heidegger.

  20. The diluvial rains of Saguenay-Lac-Saint-Jean : status one year after

    International Nuclear Information System (INIS)

    Henri, N.; Beauchemin, G.; Alonso, M.; Gelinas, M.

    1997-01-01

    The status of damages and reconstruction in the Saguenay-Lac-Saint-Jean region, one year after the catastrophic torrential rain storm of July 1996 was presented. Numerous detailed maps and photographs of the principal washed-out, destroyed and damaged regions were presented, along with maps and photographs of the same areas after reconstruction, repair and landscaping. The maps show the different river beds, urban, and rural districts that were subjected to the catastrophic washouts, landslides and soil collapses. The report also includes a summary of the repair costs by municipal regions and the financial aid received by the region to help in the reconstruction effort. tabs., figs

  1. Jeans instability of inhomogeneous dusty plasma with polarization force, ionization and recombination

    International Nuclear Information System (INIS)

    Jain, Shweta; Sharma, Prerana; Chhajlani, R K

    2017-01-01

    The self-gravitational Jeans instability has been studied in dusty plasma containing significant background of neutral pressure and recombination of ions and electrons on the dust surface. The full dynamics of charged dust grains, ions and neutral species are employed considering the electrons as Maxwellian. We have derived the general dispersion relation for collisional dusty plasma with ionization, recombination and polarization force. The general dispersion relation describes the effects of considered parameters which are solved in different dusty plasma situations. Further, the dispersion relation is solved numerically. The present work is applicable to understand the structure formation of interstellar molecular clouds in astrophysical plasma. (paper)

  2. Jeans instability of inhomogeneous dusty plasma with polarization force, ionization and recombination

    Science.gov (United States)

    Jain, Shweta; Sharma, Prerana; Chhajlani, R. K.

    2017-05-01

    The self-gravitational Jeans instability has been studied in dusty plasma containing significant background of neutral pressure and recombination of ions and electrons on the dust surface. The full dynamics of charged dust grains, ions and neutral species are employed considering the electrons as Maxwellian. We have derived the general dispersion relation for collisional dusty plasma with ionization, recombination and polarization force. The general dispersion relation describes the effects of considered parameters which are solved in different dusty plasma situations. Further, the dispersion relation is solved numerically. The present work is applicable to understand the structure formation of interstellar molecular clouds in astrophysical plasma.

  3. Jeans instability and antiscreening in the system of matter-antimatter with antigravitation

    International Nuclear Information System (INIS)

    Trigger, S A; Gribov, I A

    2015-01-01

    The hypothesis of antigravitational interaction of elementary particles and antiparticles is applied to the simple two-component hydrodynamic model Λ-CDM (Lambda cold-dark matter) with gravitational repulsion and attraction. An increase in the Jeans instability rate, the presence of antiscreening, and the dominant role of the gravitational repulsion as a possible mechanism of spatial separation of matter and antimatter in the Universe are shown, as well as the observable acceleration of far galaxies. The sound wave is found for the two-component gravitational-antigravitational system. The suggested approach permits to reestablish the idea about baryon symmetry of the Universe, causing its steady large-scale flatness and accelerated Universe expansion. (paper)

  4. La ricetta di Jean Giono. Rammendi di paesaggi rurali

    Directory of Open Access Journals (Sweden)

    Gabriele Corsani

    2015-12-01

    Full Text Available Today’s attention paid to food, related to the challenges to sustainability of its production and to the large numbers of humans, must not relegate its spiritual features into a corner. Lettre aux paysans sur la pauvreté et la paix (1938 of the Occcitan writer Jean Giono is not a praise of poverty but the praise of a modest measure, linked to the dramatic situation of that time but generally valid. The Lettre is now a classic. We present it starting from the recipe of a vegetable soup, humble fulcrum of the author’s message meant to announce the reform of the rural world. The topic of the letter has an arrival point with L’homme qui plantait des arbres, written by Giono in 1953 and published in 1980, gaining a success ever renewed; the Italian translation, L’uomo che piantava gli alberi obtained a similar success. There is not mention of the food but its environmental premises perform a protagonist role.

  5. The Function of the Medieval in Jean-Jacques Rousseau's Nouvelle Heloise : A Rereading of the Abelard and Heloise Motif

    NARCIS (Netherlands)

    Montoya, Alicia C.

    2010-01-01

    Jean-Jacques Rousseau's critical rewriting in his Nouvelle H,lo

  6. A Thermodynamic History of the Solar Constitution — II: The Theory of a Gaseous Sun and Jeans' Failed Liquid Alternative

    Directory of Open Access Journals (Sweden)

    Robitaille P.-M.

    2011-07-01

    Full Text Available In this work, the development of solar theory is followed from the concept that the Sun was an ethereal nuclear body with a partially condensed photosphere to the creation of a fully gaseous object. An overview will be presented of the liquid Sun. A powerful lineage has brought us the gaseous Sun and two of its main authors were the direct sci- entific descendants of Gustav Robert Kirchhoff: Franz Arthur Friedrich Schuster and Arthur Stanley Eddington. It will be discovered that the seminal ideas of Father Secchi and Herv ́ e Faye were not abandoned by astronomy until the beginning of 20th century. The central role of carbon in early solar physics will also be highlighted by revisit- ing George Johnstone Stoney. The evolution of the gaseous models will be outlined, along with the contributions of Johann Karl Friedrich Z ̈ ollner, James Clerk Maxwell, Jonathan Homer Lane, August Ritter, William Thomson, William Huggins, William Edward Wilson, George Francis FitzGerald, Jacob Robert Emden, Frank Washington Very, Karl Schwarzschild, and Edward Arthur Milne. Finally, with the aid of Edward Arthur Milne, the work of James Hopwood Jeans, the last modern advocate of a liquid Sun, will be rediscovered. Jeans was a staunch advocate of the condensed phase, but deprived of a proper building block, he would eventually abandon his non-gaseous stars. For his part, Subrahmanyan Chandrasekhar would spend nine years of his life studying homogeneous liquid masses. These were precisely the kind of objects which Jeans had considered for his liquid stars.

  7. National debate on the energies: Report of the Senior citizens Committee, report of M. Jean Besson. Our electric system proof against the heat wave. The italian electric network failure; Debat national sur les energies: les suites rapport du comite des Sages, rapport de M. Jean Besson. Notre systeme electrique a l'epreuve de la canicule. La panne du reseau electrique italien

    Energy Technology Data Exchange (ETDEWEB)

    Castillon, P.; Lesggy, M.; Morin, E.; Besson, J.; Mattatia, St.; Barthe, F.; Bouley, N.; Kahan, J.M. [Direction de la Demande et des Marches Energetiques (DIDEME), 75 - Paris (France)

    2003-07-01

    To preserve the impartiality and the serenity of the discussions, the National Debate on the Energies based on three channels: a Senior Citizens, a consultative Committee and the Parliamentarian Jean Besson. This document published extracts of the reports of the Senior Citizens Committee and Jean Besson. It also provides an analysis of the consequences on the electric power supply during the 2003 summer heat wave in France and the great failure of the italian electric power network during the 28 september 2003. (A.L.B.)

  8. Jean Baptiste Paulin Trolard (1842-1910): his life and contributions to neuroanatomy.

    Science.gov (United States)

    Loukas, Marios; Shea, Misha; Shea, Cory; Lutter-Hoppenheim, Martine; Zand, Paula; Tubbs, R Shane; Cohen-Gadol, Aaron A

    2010-06-01

    One hundred years after his death, Jean Baptiste Paulin Trolard's name endures in the medical literature primarily because of his work on the anastomotic veins of the cerebral circulation. Specifically, and known to all neurosurgeons, the great anastomotic vein, or the vein of Trolard, underscores a portion of Trolard's contribution to neuroanatomy. The country of Algeria has also remembered this influential colonist because of his life's work as a physician, professor, humanitarian, environmentalist, and French nationalist. Trolard fought deforestation, injustice, epidemics, and bureaucracy in northern Africa and tragically died in the midst of these struggles. In this historical vignette, the authors review the life and contributions of this pioneer of early neuroanatomy.

  9. Rytíř Jean de Carro, Karel A. Vinařický a jejich latinská korespondence z let 1829-1843

    Czech Academy of Sciences Publication Activity Database

    span class="emphasis">Podavka, Ondřejspan>

    2011-01-01

    Roč. 134, 1-2 (2011), s. 95-119 ISSN 0024-4457 Institutional research plan: CEZ:AV0Z90090514 Keywords : reception of Antiquity * correspondence * intellectual contacts * Karel A. Vinařický * Jean de Carro Subject RIV: AB - History

  10. Jean Alesi and his son Giuliano visited CERN

    CERN Multimedia

    Emma Jones

    2010-01-01

    Jean Alesi, former F1 racing driver, and his kids visited CERN on Monday 1st February 2010. The Bulletin and the Video productions team had the opportunity to meet him. The video interview is transcribed for your convenience. What attracted you to CERN, what was it that made you want to come? We talked at home with the children about places to see close to us, like CERN, where they are seeking to reproduce the origins of the world. These things are so far removed from what we ordinarily think and talk about, that they captured our imagination and made us want to come see for ourselves. We know that your son (Giuliano, 9 years) is interested in what is happening at CERN, so we'd like to ask him: how did he find out about it? Giuliano: I am very interested in the technologies used in laboratories, and the exploration of the Universe. Plus, I wanted to see some of the incredible machines. I enjoyed my visit a lot. I found out about CERN from my mother. She showed me a video that I really liked, so I wanted to...

  11. Jean-Paul Marat (1743-1793, cientista e tradutor de Newton

    Directory of Open Access Journals (Sweden)

    Tosi Lucía

    1999-01-01

    Full Text Available Although Jean Paul Marat (1743-1793 is known as a political activist and as a founder of the controversial journal L'Ami du Peuple during the French Revolution, an important period of his life was spent as a medical practionner, and as a scientist. In 1765 he went to England, where he remained for eleven years mostly dedicated to medical practice and publications on that subject and on political and moral questions. Returning to France in 1776 he iniciated his researches on fire, electricity and light, that lasted practically until the French Revolution. In 1787 he published a translation of Newton's Opticks. In this article we describe in some detail his medical and scientific practice giving particular emphasis to his experiments on optics and to his theory about colors which strongly departs from newtonian theory, fully accepted by the French scientific community of the time.

  12. Jean Langlais (1907-91): an historical case of a blind organist with stroke-induced aphasia and Braille alexia but without amusia.

    Science.gov (United States)

    Fisher, C A H; Larner, A J

    2008-11-01

    The subject of a prior report of a blind organist with aphasia and Braille alexia without amusia, published in French, has been identified as Jean Langlais. His artistic and medical history is presented, the latter via translation of the original 1987 paper.

  13. Seduction as a Game of Reversals and Death. Understanding Jean Baudrillard’s Seduction through Patricia Duncker’s Hallucinating Foucault (La seducción como un juego de inversiones y muerte. Comprender Seduction, de Jean Baudrillard mediante Hallucinating Foucault, de Patricia Duncker

    Directory of Open Access Journals (Sweden)

    Alejandra Giangiulio Lobo

    2014-11-01

    Full Text Available Se estudia la teoría de la seducción de Jean Baudrillard mediante el análisis de la novela Hallucinating Foucault, de Patricia Duncker, para mostrar que el proceso de lectura es un acto seductor y un juego obsesivo entre lector y escritor. Estas características se comprueban con la inversión de las jerarquías presentes, del cambio de roles y de una muerte literal y metafórica. Hallucinating Foucault muestra la complejidad entre lector y escritor, vistos como compañeros de juego, parte de una relación que respectivamente alimenta su imaginación y su creatividad. Jean Baudrillard’s theory of seduction is studied by the analysis of the novel Hallucinating Foucault, by Patricia Duncker, to verify that the process of reading is a seductive act and a compulsive game among readers and writers. These features are shown by the reversal of the hierarchies present, the changing of roles and a literal and metaphorical death. Thus, Hallucinating Foucault shows the complexity between readers and writers, seen as playmates and partners that mutually feed one another’s imagination and creativity.

  14. Filosofía del cuerpo de Jean-Luc Nancy y Bioética de la trasplantología

    Directory of Open Access Journals (Sweden)

    Francisco Quesada Rodríguez

    2012-01-01

    Full Text Available El artículo presenta un análisis ético de la donación y trasplante de órganos a partir de la filosofía del cuerpo de Jean-Luc Nancy comprendida como ontología narrativa, considerando la noción antropológica que subyace en la historia de la trasplantología.

  15. Jean-Louis Déotte, Walter Benjamin et la forme plastique. Architecture, technique, lieux

    OpenAIRE

    Brabant, Dominik

    2014-01-01

    Une longue fréquentation de Walter Benjamin a permis à Jean-Louis Déotte de construire, progressivement, par touches successives et motifs récurrents sans cesse repris et retravaillés, une figure de l’œuvre qui n’en soit pas la simple exégèse toujours recommencée, mais bien la reconfiguration constante de son lieu, du site de son avoir-lieu, si l’on considère l’œuvre-Benjamin à l’image d’un événement. Walter Benjamin et la forme plastique constitue à cet égard une étape importante, sans postu...

  16. JEAN DANIÉLOU (1905–1974: CARDINAL, SCHOLAR, THEOLOGI AND EDICATED TO THE 35TH ANNIVERSARY OF HIS DEATH

    Directory of Open Access Journals (Sweden)

    P. MIKHAYLOV

    2009-08-01

    Full Text Available Author overviews life and activities of well-known Catholic theologian of the XXthcentury — Jean Daniélou, and also analyses his main works in patristics, early Christian theology, theology of Christian mission etc. This article may be useful to everyone who is interested in the destinies of Christian theology nowaday

  17. National debate on the energies: Report of the Senior citizens Committee, report of M. Jean Besson. Our electric system proof against the heat wave. The italian electric network failure

    International Nuclear Information System (INIS)

    Castillon, P.; Lesggy, M.; Morin, E.; Besson, J.; Mattatia, St.; Barthe, F.; Bouley, N.; Kahan, J.M.

    2003-01-01

    To preserve the impartiality and the serenity of the discussions, the National Debate on the Energies based on three channels: a Senior Citizens, a consultative Committee and the Parliamentarian Jean Besson. This document published extracts of the reports of the Senior Citizens Committee and Jean Besson. It also provides an analysis of the consequences on the electric power supply during the 2003 summer heat wave in France and the great failure of the italian electric power network during the 28 september 2003. (A.L.B.)

  18. Régis Boulat, Jean Fourastié, un expert en productivité. La modernisation de la France (années 1930–années 1950)

    OpenAIRE

    Denord, François

    2011-01-01

    De Jean Fourastié, beaucoup se souviennent qu’il a inventé la formule « les Trente Glorieuses ». Sa renommée aurait pu à elle seule justifier une biographie. Issu d’une thèse de doctorat d’histoire soutenue à l’université de Franche-Comté, le livre de Régis Boulat doit pourtant peu à ce genre académique. S’il rend compte de la trajectoire de Jean Fourastié, c’est comme véhicule de la notion de productivité en France entre les années 1930 et 1950. Praticien et expert de l’économie, haut foncti...

  19. A teoria de Jean Piaget como princípio para o desenvolvimento das inovações = The theory of Jean Piaget as a principle for the development of innovations = La teoría de Jean Piaget como principio para el desarrollo de innovaciones

    Directory of Open Access Journals (Sweden)

    Borges, Karen Selbach

    2016-01-01

    Full Text Available Neste trabalho, buscou-se mostrar que a teoria de Jean Piaget explica os mecanismos cognitivos utilizados pelos inventores nas suas criações. Sabendo-se que o processo de criação é diferente para cada pessoa, procurou-se, através de uma metáfora, o "ciclone da criação", representar as etapas desse processo. Por fim, desejou-se promover uma reflexão sobre a seguinte questão: sabendo-se que os mecanismos descritos por Piaget são efetivos para a produção de invenções e que estas são importantes para as inovações que impulsionam o avanço da humanidade, como promover, de forma adequada, o desenvolvimento desses mecanismos para que os jovens de hoje sejam os inovadores de amanhã?

  20. The Matrix Regained: Reflections on the Use of the Grid in the Architectural Theories of Nicolaus Goldmann and Jean-Nicolas-Louis Durand

    NARCIS (Netherlands)

    Goudeau, J.J.W.

    2015-01-01

    In addition to the superficial visual similarities between the architectural theories of the Silesian-born, seventeenth-century Dutch mathematician Nicolaus Goldmann and the early nineteenth-century French architect Jean-Nicolas-Louis Durand, there is a more profound interconnection: their use of

  1. Derecho para la ciudad en una sociedad democrática. Respuesta a Jean-Pierre Garnier.

    OpenAIRE

    Capel, Horacio

    2011-01-01

    Como respuesta a las críticas efectuadas por Jean-Pierre Garnier en su artículo “Treinta objeciones a Horacio Capel”, el autor se reafirma en las ideas que expuso en la conferencia “Urbanización Generalizada, derecho a la ciudad y derecho para la ciudad”. Su tesis fundamental es que se debe y se puede convencer a los ciudadanos de la necesidad de realizar profundas reformas, y que el marco legal democrático permite elaborar y aprobar leyes verdaderamente innovadoras e incluso revolucionarias....

  2. Kohti elokuvallista ajattelua : virtuaalisen todellisen ontologia Gilles Deleuzen ja Jean-Luc Godardin elokuvakäsityksissä

    OpenAIRE

    Oravala, Juha

    2008-01-01

    Juha Oravala tarkastelee tutkimuksessaan yhteyttä ranskalaisen filosofin Gilles Deleuzen (1925–1995) elokuvalle ominaisten liikkeen ja ajan kategorioille rakentuvan monijakoisen todellisuuskäsityksen sekä ranskalaisen elokuvaohjaaja Jean-Luc Godardin tutkivan elokuvakäsityksen välillä.Aikaisempi elokuvateoria painotti laajalti tekijälähtöistä näkökulmaa. Sen yksi vallitseva tulkinnallinen totuus oli, että tekijä pyrkii ilmaisemaan elokuvien kautta sisäistä kokemusmaailmaansa ja sisäistä puhet...

  3. Proceedings of the French-German symposium on Hydrogen-energy, an industrial model for the energy transition in France and in Germany: myth or reality?

    International Nuclear Information System (INIS)

    Bodineau, Luc; Menzen, Georg; Hotellier, Gaelle; Arnold, Peter Erich; Mauberger, Pascal; Roentzsch, Lars; Poggi, Philippe; Gervais, Thierry; Schneider, Guenther; Colomar, David; Buenger, Ulrich; Nieder, Babette; Zimmer, Rene; Le Grand, Jean-Francois

    2014-06-01

    Energies. The example of Herten (Babette Nieder); 11 - Social acceptance of hydrogen mobility in Germany (Rene Zimmer); 12 - Hydrogen - a development opportunity for regions? (Jean-Francois Le Grand)

  4. L’entreprise archivistique de Jean de Cirey, abbé de Cîteaux (1476-1501. Le dossier documentaire de la seigneurie de Villars en Côte-d’Or

    Directory of Open Access Journals (Sweden)

    Coraline Rey

    2010-10-01

    Full Text Available L'abbé Jean de Cirey (1476-1501 a réalisé un ambitieux projet archivistique, notamment en faisant trier et classer les chartes, et en assurant leur préservation par la rédaction de cartulaires. De cette entreprise, les Archives départementales de Côte-d’Or conservent aujourd’hui neuf grands registres de parchemin (320/325 x 240/250 mm appelés « cartulaires de Jean de Cirey », formant un cartulaire général de l’abbaye de Cîteaux. Ce service d’archives possède aussi quinze cartulaires cisterc...

  5. Éloge du décor : l’église Saint-Jean-Bosco à Paris, sanctuaire national du père des orphelins

    Directory of Open Access Journals (Sweden)

    Valérie Gaudard

    2009-11-01

    Full Text Available Architecte méconnu, D. Rotter élève en 1933 le sanctuaire national de l’ordre de Saint-Jean-Bosco, soixantième chantier du cardinal Verdier. Élément d’un projet plus vaste de bâtiments destinés à l’éducation des jeunes défavorisés, l’église en béton armé, à la silhouette proche de l’église du Raincy, frappe par l’originalité, la richesse et la bonne conservation de son décor. Bessac et Gaudin signent une partie du décor dû pour l’essentiel à Mauméjean Frères. Cet unicum parisien contient l’un des derniers décors figurés d’église avant leur disparition après-guerre.

  6. Lühike panegüürika Lauri Leesist : temale pühendatud näituse avamise puhul Eesti Rahvusraamatukogus 18. jaanuaril 2002 / Jean-Jacques Subrenat

    Index Scriptorium Estoniae

    Subrenat, Jean-Jacques

    2002-01-01

    Prantsuse suursaadiku Eestis Jean-Jacques Subrenat sõnavõtt Rahvusraamatukogu humanitaarteaduste saalis ja Prantsuse saali galeriis näituse "Lauri Leesi kui prantsuse kultuuri ja keele vahendaja Eestis" avamise puhul

  7. Sovereignty and Democracy in Global Times: acutality of the Jean-Jacques Rousseau Political Philosophy and the limits of the social contract

    Directory of Open Access Journals (Sweden)

    Marcus Baccega

    2017-09-01

    Full Text Available SOBERANIA E DEMOCRACIA EM TEMPOS MUNDIALIZADOS: ATUALIDADE DA FILOSOFIA POLÍTICA DE JEAN-JACQUES ROUSSEAU E OS LIMITES DO CONTRATO SOCIAL Resumo: este artigo visa a problematizar os (descaminhos dos conceitos políticos e das práticas sociais e jurídicas em torno da soberania política do Estado Nacional e da democracia nos tempos de mundialização do Capital. Portanto, revisita e percorre uma breve arqueologia conceitual da Soberania, desde Isidoro de Sevilha até a clássica definição de Jean Bodin nos Seis Livros sobre a República (1576. O propósito é problematizar a filosofia política de Rousseau para, então, perceber e discutir seus limites suas virtualidades, bem como a atualidade de sua noção de Contrato Social e o papel da Filosofia Política na Era do Capital Global. Palavras-chave: Rousseau. Soberania. Mundialização do Capital. Abstract: this paper casts doubt on the ways and shunts of political concepts and social and legal practices concerning political sovereignty of the Nation State and democracy at the time of Capital’s globalization. It revisits a brief conceptual archeology of Sovereignty, since Isidore of Seville to the classical definition by Jean Bodin in The Six Books on the Republic (1576. The purpose is casting doubt on the political philosophy of Rousseau, in order to discuss its limits and virtualities, and the topicality of his notion of social contract and the role of Political Philosophy at the Age of Global Capital. Keywords: Rousseau. Sovereignty. Globalization of Capital.

  8. Human rights assessment in Parc Jean Marie Vincent, Port-au-Prince, Haiti.

    Science.gov (United States)

    Cullen, Kimberly A; Ivers, Louise C

    2010-12-15

    Months after a 7.0 magnitude earthquake hit Port-au-Prince, Haiti, over one million remain homeless and living in spontaneous internally displaced person (IDP) camps. Billions of dollars from aid organizations and government agencies have been pledged toward the relief effort, yet many basic human needs, including food, shelter, and sanitation, continue to be unmet. The Sphere Project, "Humanitarian Charter and Minimum Standards in Disaster Response," identifies the minimum standards to be attained in disaster response. From a human rights perspective and utilizing key indicators from the Sphere Project as benchmarks, this article reports on an assessment of the living conditions approximately 12 weeks after the earthquake in Parc Jean Marie Vincent, a spontaneous IDP camp in Port-au-Prince. A stratified random sample of households in the camp, proportionate to the number of families living in each sector, was selected. Interview questions were designed to serve as "key indicators" for the Sphere Project minimum standards. A total of 486 interviews were completed, representing approximately 5% of households in each of the five sectors of the camp. Our assessment identified the relative achievements and shortcomings in the provision of relief services in Parc Jean Marie Vincent. At the time of this survey, the Sphere Project minimum standards for access to health care and quantity of water per person per day were being met. Food, shelter, sanitation, and security were below minimum accepted standard and of major concern. The formal assessment reported here was completed by September 2010, and is necessarily limited to conditions in Haiti before the cholera outbreak in October. Copyright © 2010 Cullen and Ivers. This is an open access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/), which permits unrestricted non-commercial use, distribution, and reproduction in any

  9. Hydrogen system (hydrogen fuels feasibility)

    International Nuclear Information System (INIS)

    Guarna, S.

    1991-07-01

    This feasibility study on the production and use of hydrogen fuels for industry and domestic purposes includes the following aspects: physical and chemical properties of hydrogen; production methods steam reforming of natural gas, hydrolysis of water; liquid and gaseous hydrogen transportation and storage (hydrogen-hydride technology); environmental impacts, safety and economics of hydrogen fuel cells for power generation and hydrogen automotive fuels; relevant international research programs

  10. NOMENCLATURAL NOTES ON THE EURYTOMIDS (CHALCIDOIDEA: EURYTOMIDAE) DESCRIBED BY JEAN BRÈTHES HOUSED IN MUSEO ARGENTINO DE CIENCIAS NATURALES “BERNARDINO RIVADAVIA”

    Science.gov (United States)

    Nine species parasitic eurytomid wasps described by Jean Brèthes and deposited in the National Insect Collection of Argentina, Buenos Aires are treated and their nomenclature stabilized. The condition of the type material is described. Lectotypes are designated for Prodecatoma parodii, Eudecatoma o...

  11. Pengaruh Harga Diskon, Kualitas Produk, Citra Merek, dan Iklan terhadap Minat Beli Celana Jeans Levi's di Surabaya

    OpenAIRE

    Ghristian, Ignatius Danu

    2015-01-01

    The aim of this study is to test the effect of Discounted Price, Product Quality, Brand Image, and Advertising on Purchase Intention of Levi's Pants Jeans in Surabaya. This study used the independent variables such as discount price, product quality, brand image and advertising while the dependent variable is Purchase Intention. It took 82 respondents that were selected by using Judgment Sampling Technique. The data were analyzed using multiple linear regressions and using analysis tools of S...

  12. Role of radiation therapy in bladder cancer in the Saguenay-Lac Saint-Jean area

    International Nuclear Information System (INIS)

    Brochet, F.; Barrette, L.R.

    1998-01-01

    Bladder cancer is more frequent in Quebec, especially in Saguenay-Lac Saint-Jean than in other Canadian provinces and in the USA. From 1983 to 1996, only 78 patients presenting with bladder cancer received external beam radiation therapy. Sixty-eight were treated with curative intent Overall survival rates were 70% at 3 years, 66% at 5 years, and 40% at 10 years. Retrospective analysis of these cases and literature review show that preoperative radiation therapy is useful in the management of bladder cancer, especially in T3 tumors. It is also useful for patients whose tumor objectively responds to radiation therapy, without an increase in morbidity. (authors)

  13. Le paysage atlantique dans Lettres à ma fille de Jean Désy. Entre projection et plongée

    Directory of Open Access Journals (Sweden)

    Myriam Marcil-Bergeron

    2015-11-01

    Full Text Available L’écrivain-voyageur Jean Désy raconte dans Lettres à ma fille (1997 sa première navigation hauturière, qui consiste en une traversée de l’océan Atlantique à la voile. Deux pôles orientent la représentation du grand large dans ce récit, soit la projection du voyageur vers le dehors et la plongée dans ses souvenirs des paysages nordiques et sylvestres. Par une approche géopoétique, cet article vise à examiner les effets du rythme et de la polysensorialité ainsi que la manière dont l’expérience du Nord et de la forêt participe à la configuration du paysage atlantique. The traveller and writer Jean Désy narrates in Lettres à ma fille (1997 his first ocean navigation, which consists in a sailing across the Atlantic. In this story, two poles orient the representation of the open sea, namely the traveler’s outward projection and his diving into memories from nordic and forest landscapes. Through a geopoetic approach, this article aims to examine the effects of rhythm and polysensoriality, and also how the experience of the North and the forest participates in the configuration of the atlantic landscape.

  14. The Chiasmus of Mourning and Identification in Jean Genet

    Directory of Open Access Journals (Sweden)

    Peter Benson

    2000-06-01

    Full Text Available The theories of psychological identification proposed by Sigmund Freud and Kaja Silverman are explored in relation to Jean Genet's Funeral Rites and his later essay on Rembrandt. Genet can be seen to separate mourning (which for Freud lies at the basis of identification from a process of generalized identification in which his difference from other people dissolves. A narcissistic formation of personality, evident in the symbolism of mirrors in Funeral Rites , gives to this process an added impetus. But the fundamental condition of possibility for such generalized identification is the void it reveals at the center of all personality. This void not only makes possible the different kinds of identification (heteropathic and idiopathic described by Silverman, it also disturbs any clear distinction between them. It is for these reasons that the glamorization of Nazism in Funeral Rites is coextensive with a demystification of its power, and the often brutal eroticism of the book is suffused with an ineradicable dimension of tenderness. Taken further in the essay on Rembrandt, these themes lead to an ambiguous mysticism in which the source of creativity is revealed as inseparable from its ultimate obliteration.

  15. Pedagical enlightenment and natural education in Jean-Jacques Rousseau

    Directory of Open Access Journals (Sweden)

    Cristiano Eduardo Wendt

    2012-05-01

    Full Text Available The essay discusses the importance of Jean-Jacques Rousseau for modern pedagogy, by being grounded on his philosophical-pedagogical work Émile or On Education. It seeks to present the meaning of pedagogical enlightenment as well as the concept of natural education, and the two great novelties brought by Rousseau to the educational realm, i.e., the concept of infancy and of education. In this perspective, it analyzes the three main interpretations to which Rousseau’s enlightenment was submitted along history: As an optimist of reason, primitivist and dialectician of reason. Assuming the Genevan’s thought as a defender of a dialectics of reason, the essay seeks to reflect the unfolding which every concept provokes to its project of natural education and how it reflects in the cognitive and moral development of the infants. At last it deals with the presentation of two innovations which Rousseau brings to the realm of education, the first one which deals with the concept of infancy, and the second one which deals with the pedagogical concept as a whole, by considering the phases of biological, cognitive and moral maturing, where each child is encountered.

  16. El diálogo, un espacio de crítica Jean Badovici y Eilleen Gray

    OpenAIRE

    María Pura Moreno Moreno; Juan Pedro Sanz Alarcón

    2016-01-01

    Resumen Jean Badovici fue un arquitecto rumano dedicado a la crítica y a la difusión de la arquitectura moderna en el París de la Europa de entreguerras. A  partir de 1924, y emulando a Paul Valéry en 'Eupalinos ó el arquitecto',  comenzó a publicar unos textos dialogados donde él mismo interpelaba a una segunda voz – Eileen Gray – en torno a conceptos del pensamiento  arquitectónico. En este artículo se analizan los temas abordados principalmente en los  diálogos titulados 'La maison ...

  17. Predikanten in ballingschap. De carrièrekansen van Jean en Isaac Claude in de Republiek

    Directory of Open Access Journals (Sweden)

    David van der Linden

    2012-01-01

    Full Text Available After the revocation of the Edict of Nantes in 1685, over 400 Huguenot ministers made their way to the Dutch Republic in search of a new pulpit. They stood a good chance, because the Huguenot exodus resulted in a corresponding demand for French preachers, while Dutch authorities offered financial support. Yet a surplus of ministers also meant fierce competition over positions. The careers of Jean and Isaac Claude show that on this highly competitive market Huguenot ministers succeeded in gaining a position in the Dutch Republic by virtue of their reputation, networks, and religious and political ideas.

  18. Jean-Philippe Costes, Les subversifs hollywoodiens. L’esprit critique du cinéma grand public

    OpenAIRE

    Dubois, François-Ronan

    2015-01-01

    À l’idée largement répandue que le cinéma grand public produit dans les studios d’Hollywood représente une machine de propagande étasunienne ou, à tout le moins, capitaliste, Jean-Philippe Costes entend opposer une lecture à contre-courant d’un corpus cinématographique fait de grands classiques et de grands oubliés. Hollywood, à ses yeux, ne saurait se réduire au véhicule médiatique d’une idéologie uniforme et oppressive qui serait, au gré des analyses, celle du capital, du patriotisme améric...

  19. "I would eagerly leave Neuchâtel ..." A 1912 letter by Jean Piaget with an introduction and notes.

    Science.gov (United States)

    Vidal, F

    1986-01-01

    A 1912 letter from fifteen-year-old Jean Piaget (1896-1980) to the director of the Museum of Natural History of Geneva illustrates Piaget's precocious integration into a community of professional naturalists, and reveals his hitherto unknown plan to study medicine. It is not certain whether he actually intended to realize that plan. An essential biographical fact, however, is that he finally left natural history by turning to philosophy rather than to medicine.

  20. DECREASEMENT OF COLOUR AND COD CONTENT OF THE LIQUID WASTE PRODUCT FROM THE JEANS WASHING INDUSTRY BY CHITOSAN AND Trametes versicolor

    Directory of Open Access Journals (Sweden)

    Rumondang Bulan

    2010-06-01

    Full Text Available Chitosan and Trametes versicolor were used as the material for processing liquid waste product from the jeans washing industry in this study as they were more economics and no negative damage in the environmental life. This research is to find out the chitosan and Trametes versicolor effect as the coagulant in decreasing the colour and the COD content of the liquid waste product from the jeans washing industry using the coagulation method and floculation. The dosage of chitosan and Trametes versicolor were 200, 400, 600, 800 and 1000 mg/L of the liquid waste product whereas the combination of chitosan and Trametes versicolor were 4:1, 3:2, 2:3 and 1:4. The data resulted from the analysis were shown as a graphics. The research results show that the optimum dosage of chitosan as coagulant was 800 mg/L which was able to decrease the colour intensity. For blue colour, the intensity decreased from 1.2 to 0.1%; the yellow colour intensity decreased from 0.9 to 0.0% and the COD 91.23%. The optimum dosage of Trametes versicolor of 600 mg/L was able to decrease the blue colour intensity from 1.2 to 0.11%; the yellow colour intensity from 0.9 to 0.1% and the COD was 91.37%. By using the combinationof chitosan and Trametes versicolor it was shown that the best result was using the 3:2 ratio which was able to decrease the blue colour intensity from 0.9 to 0.1% and the yellow colour intensity from 0.9 to 0.0% and the COD was 86.68%.   Keywords: colour intensity, COD, liquid waste product of the jeans washing, chitosan, Trametes versicolor

  1. The resilient banality of catastrophes: about After Fukushima by Jean-Luc Nancy

    International Nuclear Information System (INIS)

    Tonaki, Yotetsu

    2016-01-01

    The author proposes some thoughts based on a book (The equivalence of catastrophes - After Fukushima) written by the French philosopher Jean-Luc Nancy for whom Fukushima cannot be reduced to technological dysfunctions, nor to a factor attributable to men in charge, but reveals a system of general equivalence which supports a whole civilisation. The author refers to the speech on safety engineering and on resilience in Japan, and outlines some surprising correspondences with Nancy's writings. With a reference to Heidegger, the author shows that what the catastrophe reveals is not only daunting or abnormal phenomena, but also and above all an almost ontological condition which command the normal operation of every day life. Based on Anders' works, he examines what is on in this techno-sphere which is finally similar to a 'self-transformation of the human being'

  2. El relato de la experiencia depresiva: Aplicando los factores cuidativos de Jean Watson The expression of the depressive experience: the application of Jean Watson caring factors

    Directory of Open Access Journals (Sweden)

    Carme Ferré-Grau

    2008-03-01

    Full Text Available La elevada frecuencia de personas con trastornos depresivos en todos los niveles de atención y la complejidad de los cuidados, conlleva la necesidad, para la enfermera, de desarrollar nuevas habilidades y competencias en el abordaje integral de los pacientes y su familia. Para la comprensión de una persona con depresión es útil una mirada etnográfica que nos permita conocer la expresión subjetiva de la vivencia de la enfermedad. Un marco adecuado de referencia para ayudar en el cuidado de estos procesos es la teoría de Jean Watson sobre la Filosofía y Ciencia de los Cuidados Humanos, que a través de sus diez factores cuidativos enmarca el rol de la enfermera en "cómo tener cuidado de...". Este artículo trata de analizar, a través de los factores cuidativos de Watson, las vivencias subjetivas relacionadas con la transformación del cuerpo y la mente de las personas con depresión: el sufrimiento y el dolor, la autoimagen y el reconocimiento, la falta de energía, la pérdida de la esperanza. Se concluye que no es posible controlar el cuerpo sin controlar la mente y para ello nos puede ayudar el análisis subjetivo de la experiencia y la aplicación de los factores cuidativos.The high frequency of people with depressive disorders in Primary Health Care as well as in Hospital and the complexity of care, carry for nurses the need to develop new skills and competences to deal with complete care of patiens and families. To understand a person suffering depressive disorders may be useful an ethnographic look that let us know the subjective expression of the experience of being ill. An appropriate framework to help care is Jean Watson’s Philosophy and Science of Human Caring, trough 10 caring factors that frame the nursing role "to take care of…". This paper tries to analyze the subjective experience related to body and mind changes: suffering and pain, self-image and acceptance, lack of energy, loss of hope… in patients with

  3. Transitory Connections: The Reception and Rejection of Jean Piaget's Psychology in the Nursery School Movement in the 1920s and 1930s

    Science.gov (United States)

    Beatty, Barbara

    2009-01-01

    In 1927, nursery school educator Lucy Sprague Mitchell heralded Jean Piaget's psychology as of "outstanding interest" and wrote in "Progressive Education" that it should be of "immense service" to psychologists, teachers, and parents. In 1929, psychologist Lois Meek praised Piaget's research in the National Society for the Study of Education's…

  4. The hydrogen; L'hydrogene

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2004-07-01

    The hydrogen as an energy system represents nowadays a main challenge (in a scientific, economical and environmental point of view). The physical and chemical characteristics of hydrogen are at first given. Then, the challenges of an hydrogen economy are explained. The different possibilities of hydrogen production are described as well as the distribution systems and the different possibilities of hydrogen storage. Several fuel cells are at last presented: PEMFC, DMFC and SOFC. (O.M.)

  5. Élisée RECLUS. Géographe, anarchiste, écologiste, Jean-Didier VINCENT, 2010

    Directory of Open Access Journals (Sweden)

    Alain Marre

    2012-06-01

    Full Text Available Lire la biographie d'un géographe écrite par un non géographe est un grand plaisir ! Jean-Didier VINCENT, comme Élisée RECLUS, est natif, de Sainte-Foy-la-Grande. C'est peut être la raison pour laquelle il s'est lancé dans cette biographie hommage qui, comme il l'écrit lui-même en fin de son ouvrage est "une histoire d'amour". On citera les dernières lignes de son livre, qui donnent tout l'objectif de cet ouvrage : "J'ai voulu écrire une histoire d'amour. L'œuvre d'Élisée RECLUS a suscité bie...

  6. Antoine-Marie Chambeyron (1797-1851): a forgotten disciple of Jean-Etienne Esquirol (1772-1840).

    Science.gov (United States)

    Walusinski, Olivier

    2017-09-01

    Antoine-Marie Chambeyron (1797-1851) was a disciple of Jean-Etienne Esquirol (1772-1840) that history forgot, undoubtedly because he made no original contribution to psychiatric nosography. In 1827, his interest in the medical-legal status of the insane led him to translate into French and annotate the first medical-legal psychiatric treatise ever published, which was the work of the German philosopher Johann Christoph Hoffbauer (1766-1827). His translation played a role in shaping the French Law of 1838, the first piece of modern legislation aimed at protecting the rights of mental patients and limiting the State's power to confine them arbitrarily. Chambeyron is among the least-cited contributors to the prestigious work of nineteenth-century French alienists.

  7. Jean-Martin Charcot, father of modern neurology: an homage 120 years after his death

    Directory of Open Access Journals (Sweden)

    Marleide da Mota Gomes

    2013-10-01

    Full Text Available Jean-Martin Charcot was a pioneer in a variety of subjects, including nervous system diseases; anatomy; physiology; pathology; and diseases of ageing, joints, and lungs. His medical achievements were mainly based on his anatomopathological proficiency, his observation, and his personal thoroughness that favored the delineation of the nosology of the main neurological diseases, including multiple sclerosis, amyotrophic lateral sclerosis, Parkinson’s disease, peroneal muscular atrophy, and hysteria/epilepsy. The link of this anatomoclinical method with iconographic representations and theatrical lessons, and the rich bibliographical documentations, carried out in a crowded diseased people barn - Salpetrière hospital were the basis of his achievements, which are still discussed 120 years after his death.

  8. ‘Domestic utility and useful lines: Jean-Charles Krafft’s and Thomas Hope’s outlines’

    Directory of Open Access Journals (Sweden)

    Alexis H. Cohen

    2013-12-01

    Full Text Available Through a study of design publications by the architect and draughtsman, Jean-Charles Krafft (1764-1833, and aristocrat and designer Thomas Hope (1769-1831, this paper examines how Neoclassicism’s material products – its architecture and objects of interior design – participated in an intellectual history of utility c. 1800. This paper gives special attention to the outline drawing, arguing that its graphic idiom is an integral feature of Krafft and Hope’s work, linking the value they ascribe to useful buildings and objects to ideas about how the lines of their illustrations were to participate both in design processes and in the promotion of neoclassical aesthetics.

  9. Jean Caune, La démocratisation culturelle, une médiation à bout de souffle

    OpenAIRE

    Clerc, Adeline

    2012-01-01

    Les travaux de Jean Caune, professeur émérite à l’université Stendhal de Grenoble, portent sur les pratiques esthétiques envisagées comme processus de médiation culturelle. Dans La démocratisation culturelle, une médiation à bout de souffle, il revient sur des notions et expressions trop souvent flottantes telles que « art », « culture », « démocratie culturelle », « action culturelle » et « médiation culturelle », et les met à rude épreuve en réinterrogeant leur signification à travers les é...

  10. La ciencia omnívora: antropología, capitalismo y estados contemporaneos según Jean y John Comaroff

    Directory of Open Access Journals (Sweden)

    Luis Fernando Angosto Ferrández

    2012-09-01

    Full Text Available Muy pocos científicos sociales alcanzan el estatus de clásicos contemporáneos, pero ciertamente incluiríamos a Jean y John Comaroff en dicha categoría. Sus investigaciones se encuentran hoy sin duda en la vanguardia de las ciencias sociales, pero su trabajo ya venía siendo seguido y debatido ampliamente en el campo de la antropología casi tres décadas atrás. Más allá de las fronteras de esta disciplina, su trabajo ha tenido ecos, y continúa resonando, en las comunidades académicas de la sociología, las ciencias políticas y los estudios legales, en clara demostración del potencial del conocimiento antropológico cuando aborda abiertamente las grandes problemáticas de nuestros tiempos. Sólo una pequeña parte de la producción de John y Jean Comaroff ha sido traducida al castellano, pero son muchos los antropólogos españoles y latinoamericanos que conocen sus propuestas teóricas y metodológicas. La conversación que sigue nos brinda la oportunidad de profundizar en los contenidos de dichas propuestas y su relación con las política del conocimiento antropológico, del capitalismo y de los estados contemporáneos.

  11. Teoria do cuidado transpessoal de jean watson no cuidado domiciliar de enfermagem a crianca: uma reflexao

    Directory of Open Access Journals (Sweden)

    Ingrid Meireles Gomes

    2013-09-01

    Full Text Available Trata-se de um ensaio reflexivo sobre o potencial de utilização da Teoria do Cuidado Transpessoal de Jean Watson, na realização do cuidado domiciliar de enfermagem direcionado à criança, desenvolvido à luz dos 10 elementos do Processo Clinical Caritas. Este referencial teórico permite desenvolver a transpessoalidade no cuidado domiciliar da criança, momento em que o enfermeiro precisa desenvolver autoconhecimento, ter suporte teórico-filosófico e valer-se deste conhecimento, a fim de ultrapassar o paradigma da objetividade e do biologicismo.

  12. Jean Valjean y Rastignac: dos modelos extremos de comprender la libertad en el héroe decimonónico / Jean Valjean and Rastignac: Two Opposing Approaches on the Notion of Freedom in the Nineteenth-Century Hero

    Directory of Open Access Journals (Sweden)

    Guillermo Aguirre Martínez

    2012-01-01

    Full Text Available Through two universal characters, Jean Valjean and Eugène de Rastignac, French decimononic narrative offers two heroic models as two different views of the world: one embodies Victor Hugo’s social ideas, and the other Honoré de Balzac’s ones. In this paper, we suggest a study focused on the heroe’s fight against destiny in order to develop several oppositions between chance and fate. This duality is the central idea in the work of both novelists. Finally, we will analyze the heroe’s work aiming to under-sand how the ethical behavior trascends fiction to emerge into the real world.À travers les personnages de Jean Valjean et de Eugène de Rastignac, le roman français du XIXème proposera deux modèles de héros appréhendés comme des cosmovisions opposées : l’une incarnera les idées sociales de Victor Hugo, et l’autre celles d’Honoré de Balzac. Dans cet article, nous proposons une approche qui s’empare de la figure du héros et sa confrontation avec le destin, afin d’établir une série d’oppositions autour de la dualité hasard-nécessité, entendue comme fondement clé dans l’œuvre des deux romanciers. Enfin, nous réaliserons une série de comparaisons éclairantes autour de la tâche du héros dans le but de comprendre comment les conduites éthiques manifestées dans la fiction trouvent leur projection dans la vie même.

  13. Jean Claude Risset’s Duet for One Pianist: Challenges of a Real-Time Performance Interaction with a Computer-Controlled Acoustic Piano 16 Years Later

    Directory of Open Access Journals (Sweden)

    Sofia Lourenço

    2014-12-01

    Full Text Available This study aims to discuss the work Duet for one Pianist (1989 by the French composer Jean-Claude Risset (b. 13 March 1938 by analyzing the challenges of the music performance of this Computer-Aided Composition work Disklavier and implies Human-Computer Interaction performance. Extremely honored to perform the revised version of the 8 Sketches for One Pianist and Disklavier within a research project of CITAR and a new Sketch Reflections (2012 by Jean-Claude Risset dedicated to me in a World premiere in the closing ceremony of Black&White 2012 Film Festival promoted by the Catholic University of Portugal. Several issues on the performance of this work are analysed as a case-study, from the point of view of the performer, particularly the components of expressive performance in a real-time interaction between performer and computer. These components can work as analysis criteria of a piano interpretation, in here, of a pianist and Disklavier interpretation. 

  14. JEAN CLAUDE RENARD: (POETRY AS CRAFT OF TRANSPARENCY

    Directory of Open Access Journals (Sweden)

    María del Sagrario Rollán

    2015-04-01

    Full Text Available The work of Jean-Claude Renard (Toulon 1922- Paris 2002 appears from the beginning marked by the metaphor of the journey - Songs for land lost (1947, and the craft of transparency. The poet begins the journey - that originates in the experience of death and destruction of a world shaken by the war, with a word that transcends the nonsense, and calls for “the country where forgiveness is / and are childhoods “a word that is built in search of human spaces and anticipates them. The adventure through the exercise of Solitude (1951, requirement beyond itself, a kind of internal and painful split: “I am separated from my heart,” releasing it, in turn, to the knowledge of the world and the gift that transfigures. The metamorphosis of the World (1951 takes place in the act of writing itself, for in him a knowledge of the essential reality is given, from which the party of pure celebrated say, “Oh breathing started / in the center of the loaf and snow “. Poetry as craft of transparency J.C. Renard develops in Un autre parole  (1981, prose poetry admirably clarifies its internal relations with theology and mysticism. The poet moves beyond “ailleurs” to a previous or future place of reconciliation and love letters between beings: “One happy pasture / leads above child / each wisdom to your name / and every love your body.”

  15. Jean-Martin Charcot and Parkinson's disease: Teaching and teaching materials.

    Science.gov (United States)

    Walusinski, O

    2018-04-10

    James Parkinson's 1817 seminal article was not well known in France until 1861, when Jean-Martin Charcot and his friend, Alfred Vulpian, published a detailed description in French of paralysis agitans. Their article provided clinical information to help French physicians make an accurate diagnosis by considering gait, shaking and rigidity as well as masked facies. As Charcot always had a strong desire to teach, this article describes his lessons on Parkinson's disease from 1868 to 1888, and also examines the teaching approach he used to pass on his latest findings to his students and colleagues. Charcot also used his role as thesis advisor to disseminate Parkinson's work, and seven of the theses he oversaw, which until now have been overlooked, reveal another facet of his teacher-student relationship. These dissertations provided Charcot with an opportunity to highlight what he had already identified concerning what is today referred to as 'Parkinson-plus syndromes'. Finally, this report concludes with an historical survey of the teaching materials that Paul Richer and Albert Londe developed for the Master at La Salpêtrière to provide him with visual documentation. Copyright © 2018 Elsevier Masson SAS. All rights reserved.

  16. Hydrogen energy

    International Nuclear Information System (INIS)

    2005-03-01

    This book consists of seven chapters, which deals with hydrogen energy with discover and using of hydrogen, Korean plan for hydrogen economy and background, manufacturing technique on hydrogen like classification and hydrogen manufacture by water splitting, hydrogen storage technique with need and method, hydrogen using technique like fuel cell, hydrogen engine, international trend on involving hydrogen economy, technical current for infrastructure such as hydrogen station and price, regulation, standard, prospect and education for hydrogen safety and system. It has an appendix on related organization with hydrogen and fuel cell.

  17. Nizet Jean, Pichault François, Les performances des organisations africaines : pratiques de gestion en contexte incertain

    Directory of Open Access Journals (Sweden)

    David Laloy

    2011-02-01

    Full Text Available Cet ouvrage, dirigé par Jean Nizet et François Pichault, propose d’aborder la question du fonctionnement et des performances des organisations africaines en dépassant la posture “radicale” selon laquelle les caractéristiques de la culture africaine (manque d’expérience et de formation des entrepreneurs, clientélisme et corruption, prégnance des cultures traditionnelles et non rationnelles... expliqueraient à elles seules l’inhibition du développement des organisations. Ce type d’approche, qu...

  18. Data report: Jean Lake Area, Nevada. National Uranium Resource Evaluation Program

    International Nuclear Information System (INIS)

    Cook, J.R.

    1982-05-01

    This report presents the results of detailed sampling of soils, rocks, and dry lake bed material from the area of Jean Dry Lake in southern Nevada. The study area is in the Kingman 1 0 x 2 0 quadrangle of the National Topographic Map Series. Samples were collected from 1000 sites. The target density of sampling was 16 sites per square mile in the lake bed and four sites per square mile for soil samples. Neutron activation analyses are presented for uranium and 16 other elements. Scintillometer readings are reported for each site. Analytical data and scintillometer measurements are presented in tables. Statistical summaries and a brief description of the results are given. Data from the sites (on microfiche in pocket) include; (1) elemental analyses (U, Th, Hf, Al, Ce, Dy, Eu, Fe, La, Lu, Mn, Sc, Sm, Na, Ti, and V); and (2) scintillometer readings. To make the data available for public use without further delay, this report is being issued without the normal technical and copy editing

  19. More than just a conference : the European Particule Accelerator Conference, EPAC, has developped a distinctive role on the world stage, explains Christine Petit-Jean-Genaz, the EPAC conferences coordinator

    CERN Multimedia

    Maximilien Brice

    2004-01-01

    More than just a conference : the European Particule Accelerator Conference, EPAC, has developped a distinctive role on the world stage, explains Christine Petit-Jean-Genaz, the EPAC conferences coordinator

  20. Aesthetics of Being: The Unfinished Memoirs of Virginia Woolf and Jean Rhys

    Directory of Open Access Journals (Sweden)

    Patricia Moran

    2010-01-01

    Full Text Available This essay reads the unfinished memoirs of Virginia Woolf and Jean Rhys through the lens of relational psychoanalysis, particularly that of Christopher Bollas. Building upon the latter's theorisation of a maternal aesthetic based on her handling of the infant, what Bollas terms the mother's "idiom of care", the essay traces both positive and negative registers of such an aesthetic. Both memoirs open with self-identified "first memories", and both go on to connect the act of writing with these first memories. Woolf's memoir foregrounds moments of containment in a uterine, preoedipal surround, "colour-and-sound" experiences shattered by the mother's sudden death: Woolf goes on to characterise her writing as a practice that allows her to rebuild the shattered world. Rhys, by contrast, connects her writing to experiences of disharmony, alienation, and estrangement, an aesthetic she traces back to her mother's insistence on a surface conformity, at odds with the daughter's inner turmoil.

  1. JEAN-JACQUES ROUSSEAU’NUN EMILE’İNDE KADIN EĞİTİMİ

    OpenAIRE

    GENÇ, Hanife Nalan

    2015-01-01

    Bu çalışmada Fransız Yazınının Aydınlanma Dönemi yazarlarından olan Jean-Jacques Rousseau’nun ağırlıkla eğitim konusuna adanmış olan Emile (Bir Çocuk Büyüyor) isimli yapıtında kadına bakış açısını irdelemeye çalıştık. İsmi kahramanının ismiyle özdeş olan roman, yazarın kuram ve görüşlerini bilimsel ilkeler ışığında geliştirdiği Emile’in eğitimini konu edinir. Yazıldığı dönemde derin yankılar uyandıran kitap, eğitbilim alanında uygulamaya dönük kuramlar geliştirilmiş ilk yapıt olmasıyla önemli...

  2. Jean-Baptiste Comby (dir.), Enquêter sur l’internationalisation des biens médiatiques et culturels

    OpenAIRE

    Mouchard, Laure

    2018-01-01

    Issu de réflexions menées lors d’un séminaire du Centre d’analyse et de recherche interdisciplinaire sur les médias consacré à l’internationalisation des médias, l’ouvrage dirigé et introduit par Jean-Baptiste Comby prend le parti de « sociologiser » l’étude des phénomènes d’internationalisation des biens médiatiques et culturels, thème que l’auteur estime davantage investi par les historiens, les économistes, les politistes et les sémiologues. En faisant retour sur l’histoire des études de l...

  3. Measurement of dissolved hydrogen and hydrogen gas transfer in a hydrogen-producing reactor

    Energy Technology Data Exchange (ETDEWEB)

    Shizas, I.; Bagley, D.M. [Toronto Univ., ON (Canada). Dept. of Civil Engineering

    2004-07-01

    This paper presents a simple method to measure dissolved hydrogen concentrations in the laboratory using standard equipment and a series of hydrogen gas transfer tests. The method was validated by measuring hydrogen gas transfer parameters for an anaerobic reactor system that was purged with 10 per cent carbon dioxide and 90 per cent nitrogen using a coarse bubble diffuser stone. Liquid samples from the reactor were injected into vials and hydrogen was allowed to partition between the liquid and gaseous phases. The concentration of dissolved hydrogen was determined by comparing the headspace injections onto a gas chromatograph and a standard curve. The detection limit was 1.0 x 10{sup -5} mol/L of dissolved hydrogen. The gas transfer rate for hydrogen in basal medium and anaerobic digester sludge was used to validate the method. Results were compared with gas transfer models. In addition to monitoring dissolved hydrogen in reactor systems, this method can help improve hydrogen production potential. 1 ref., 4 figs.

  4. [Baron Dominique-Jean Larrey: the founder of urological traumatology].

    Science.gov (United States)

    Hatzinger, M; Ameijenda, C; Lent, V; Sohn, M

    2012-12-01

    Dominique-Jean Larrey (1766-1842) was Surgeon-in-Chief of the Grande Army under Napoleon Bonaparte (1769-1821) and personal physician of the Emperor. Against the opposition of the traditionalists he introduced the "ambulances volantes", the so-called flying ambulances. The aim was the medical treatment of the injured soldiers immediately on the battlefield. This revolutionary treatment led to a benefit not only for the own soldiers, but also for the wounded enemies. His innovation in the field of immediate assistance of wounded persons, together with Larreys' outstanding medical competence, saved thousands of soldiers lives on the battlefield of the Napoleonic wars. His memories concerning the military campaigns, have been even up to the 20th century one of the standard works of modern military surgery. He had as well great interest in urolological injuries of the urinary system and their conservative and operative care. Up to these days, his work shows a surprising actuality and perfect anatomic understanding. In a time without anaesthetics, antibiotics and under primitive circumstances, Larrey and his collegues accomplished surgical feats. Larreys flying ambulances were copied by many different countries. The American Mobile Army Surgical Hospital (M.A.S.H) is clearly based on his thoughts and ideals. In our opinion he is the father of the modern war surgery as well the urological traumatology. Georg Thieme Verlag KG Stuttgart · New York.

  5. Jean-Jacques Rousseau's copy of Albrecht von Haller's Historia stirpium indigenarum Helvetiae inchoata (1768).

    Science.gov (United States)

    Cook, A

    2003-04-01

    Jean-Jacques Rousseau sold his botanical texts to Daniel Malthus (father of Thomas Malthus) about 1775. Two of these are now in the Old Library, Jesus College, Cambridge, but all the rest have long been thought lost. However, a copy of Albrecht von Haller's Historia stirpium indigenarum Helvetiae inchoata (1768) in the Lindley Library, Royal Horticultural Society, London, bears Rousseau's name and seems to have been annotated by him. The volume contains the bookplate of Jane Dalton, a cousin to whom Malthus willed "all[his] Botanical Books in which the name of Rousseau is written". Haller was well-known to Rousseau, who while in exile in the Swiss Jura (1763-1765), studied under one of Haller's collaborators, Abraham Gagnebin. Rousseau cited Haller's entry 762 when describing a species of Seseli to the Duchess of Portland.

  6. The Jeans Condition and Collapsing Molecular Cloud Cores: Filaments or Binaries?

    International Nuclear Information System (INIS)

    Boss, Alan P.; Fisher, Robert T.; Klein, Richard I.; McKee, Christopher F.

    2000-01-01

    The 1997 and 1998 studies by Truelove and colleagues introduced the Jeans condition as a necessary condition for avoiding artificial fragmentation during protostellar collapse calculations. They found that when the Jeans condition was properly satisfied with their adaptive mesh refinement (AMR) code, an isothermal cloud with an initial Gaussian density profile collapsed to form a thin filament rather than the binary or quadruple protostar systems found in previous calculations. Using a completely different self-gravitational hydrodynamics code introduced by Boss and Myhill in 1992 (B and M), we present here calculations that reproduce the filamentary solution first obtained by Truelove et al. in 1997. The filamentary solution only emerged with very high spatial resolution with the B and M code, with effectively 12,500 radial grid points (R12500). Reproducing the filamentary collapse solution appears to be an excellent means for testing the reliability of self-gravitational hydrodynamics codes, whether grid-based or particle-based. We then show that in the more physically realistic case of an identical initial cloud with nonisothermal heating (calculated in the Eddington approximation with code B and M), thermal retardation of the collapse permits the Gaussian cloud to fragment into a binary protostar system at the same maximum density where the isothermal collapse yields a thin filament. However, the binary clumps soon thereafter evolve into a central clump surrounded by spiral arms containing two more clumps. A roughly similar evolution is obtained using the AMR code with a barotropic equation of state--formation of a transient binary, followed by decay of the binary to form a central object surrounded by spiral arms, though in this case the spiral arms do not form clumps. When the same barotropic equation of state is used with the B and M code, the agreement with the initial phases of the AMR calculation is quite good, showing that these two codes yield mutually

  7. LA SAFE and Isle de Jean Charles: Regional Adaptation and Community Resettlement Planning

    Science.gov (United States)

    Sanders, M.

    2017-12-01

    LA SAFE, or Louisiana's Strategic Adaptations for Future Environments, is a strategic framework for community development utilizing future projections of coastal land loss and flood risk as a determining factor in regional growth management and local planning initiatives along a 10, 25, and 50 year timeline. LA SAFE utilizes the input of passionate local citizen leaders and organizations committed to enabling community members to take proactive steps towards mitigating risk and increasing resilience against coastal issues. The project aims to acknowledge that adaptation and restoration must go hand-in-hand with addressing community growth and contraction, as well as realizing Louisiana's most vulnerable coastal communities will need to contemplate resettlement over the next 50 years. The project's outlook is to become a global leader for adaptation and cultural design and restoration. Connecting a global interest with the project and offering extensive ways for people to learn about the issues and get involved will provide an immense amount of support necessary for future coastal environments around the world. This presentation will focus on the output of a year-long planning effort across a six-parish target area encompassing several vulnerable coastal Louisiana locales. The Resettlement of Isle de Jean Charles is a federally-funded and first-of-its kind initiative marking Louisiana's first attempt to relocate a vulnerable coastal community at-scale and as a group. Due to a myriad of environmental factors, the Island has experienced 98 percent land loss since 1955, leading to many of the Island's historical inhabitants to retreat to higher, drier landscapes. In moving the community at-scale, the project seeks to inject new life into the community and its residents in relocating the community to higher, safer ground, while also developing the new community in such a way that it maximizes economic development, job training, and educational opportunities and can be a

  8. Dependence of hydrogen-induced lattice defects and hydrogen embrittlement of cold-drawn pearlitic steels on hydrogen trap state, temperature, strain rate and hydrogen content

    International Nuclear Information System (INIS)

    Doshida, Tomoki; Takai, Kenichi

    2014-01-01

    The effects of the hydrogen state, temperature, strain rate and hydrogen content on hydrogen embrittlement susceptibility and hydrogen-induced lattice defects were evaluated for cold-drawn pearlitic steel that absorbed hydrogen in two trapping states. Firstly, tensile tests were carried out under various conditions to evaluate hydrogen embrittlement susceptibility. The results showed that peak 2 hydrogen, desorbed at temperatures above 200 °C as determined by thermal desorption analysis (TDA), had no significant effect on hydrogen embrittlement susceptibility. In contrast, hydrogen embrittlement susceptibility increased in the presence of peak 1 hydrogen, desorbed from room temperature to 200 °C as determined by TDA, at temperatures higher than −30 °C, at lower strain rates and with higher hydrogen content. Next, the same effects on hydrogen-induced lattice defects were also evaluated by TDA using hydrogen as a probe. Peak 2 hydrogen showed no significant effect on either hydrogen-induced lattice defects or hydrogen embrittlement susceptibility. It was found that hydrogen-induced lattice defects formed under the conditions where hydrogen embrittlement susceptibility increased. This relationship indicates that hydrogen embrittlement susceptibility was higher under the conditions where the formation of hydrogen-induced lattice defects tended to be enhanced. Since hydrogen-induced lattice defects formed by the interaction between hydrogen and strain were annihilated by annealing at a temperature of 200 °C, they were presumably vacancies or vacancy clusters. One of the common atomic-level changes that occur in cold-drawn pearlitic steel showing higher hydrogen embrittlement susceptibility is the formation of vacancies and vacancy clusters

  9. Hydrogen sensor

    Science.gov (United States)

    Duan, Yixiang; Jia, Quanxi; Cao, Wenqing

    2010-11-23

    A hydrogen sensor for detecting/quantitating hydrogen and hydrogen isotopes includes a sampling line and a microplasma generator that excites hydrogen from a gas sample and produces light emission from excited hydrogen. A power supply provides power to the microplasma generator, and a spectrometer generates an emission spectrum from the light emission. A programmable computer is adapted for determining whether or not the gas sample includes hydrogen, and for quantitating the amount of hydrogen and/or hydrogen isotopes are present in the gas sample.

  10. Algunas cuestiones epistemológicas a propósito de la teología monástica medieval en Jean Leclercq

    Directory of Open Access Journals (Sweden)

    Pedro Edmundo Gómez, osb

    2006-12-01

    Full Text Available Este artículo plantea cuatro cuestiones epistemológicas a propósito de la teología monástica medieval: existencia y significado, distinción de la escolástica, noción de ciencia y crítica neoescolástica, exponiendo reverentemente lo que Dom Jean Leclercq, osb. monje, historiador y teólogo, enseñó especialmente en L'amour des lettres et le désir de Dieu, que es a la vez el título y la conclusión de un hermoso libro publicado hace ya cincuenta años, mostrando la posible "complementariedad" y "coexistencia pacífica" entre modos diversos de hacer teologíaThis article outlines four epistemological questions apropos of medieval monastic theology: existence and meaning, the scholastic distinction, the notion of science and neo-scholastic criticism, expounding reverently what monk, historian and theologian Dom Jean Leclercq, o.s.b., taught, especially in L'amour des letters et le désir de Dieu, which is at the same time the title and the conclusion of a beautiful book published 50 years ago, showing the possible "complementarity" and "peaceful co-existence" between different modes of doing theology

  11. Armes et Armures dans l'Oeuvre Épique et Historique de Jean d'Outremeuse (XIVe Siècle

    Directory of Open Access Journals (Sweden)

    Gaier, Claude

    1983-12-01

    Full Text Available JEAN d'Outremeuse fut et reste le plus populaire des vieux auteurs qui ont écrit l'histoire de l'ancienne principauté de Liège. Cette notoriété, il la doit sans doute à l'usage de la langue vulgaire -un français teinté de wallon- et aussi à l'extraordinaire profusion de détails pitttoresques qui émaillent ses narrations, où vingt générations d'érudits, de littérateurs et d'échotiers du passé ont puisé leur inspiration. Pourtant, la critique historique de notre siècle n'a eu aucune peine à démontrer que pareil ascendant n'était pas mérité, puisque Jean d'Outremeuse avait bel et bien recopié d'autres récits ou inventé de toutes pièces la matière qu'il n'avait pas trouvée dans des sources antérieures. De sorte que, à quelques nuances près, l'admiration sans bornes qu'on lui vouait jadis à désormais cédé la place au scepticisme, voire au dénigrement systématique à son égard.

  12. Hail hydrogen

    International Nuclear Information System (INIS)

    Hairston, D.

    1996-01-01

    After years of being scorned and maligned, hydrogen is finding favor in environmental and process applications. There is enormous demand for the industrial gas from petroleum refiners, who need in creasing amounts of hydrogen to remove sulfur and other contaminants from crude oil. In pulp and paper mills, hydrogen is turning up as hydrogen peroxide, displacing bleaching agents based on chlorine. Now, new technologies for making hydrogen have the industry abuzz. With better capabilities of being generated onsite at higher purity levels, recycled and reused, hydrogen is being prepped for a range of applications, from waste reduction to purification of Nylon 6 and hydrogenation of specialty chemicals. The paper discusses the strong market demand for hydrogen, easier routes being developed for hydrogen production, and the use of hydrogen in the future

  13. In memoriam: Jean Blancou, DVM, 1936-2010. World authority on rabies, historian and former Director General of the World Organisation for Animal Health (Office International des Épizooties: OIE).

    Science.gov (United States)

    2011-01-01

    Jean-Marie Blancou was born in Bangui on 28 August 1936 and passed away in Paris on 10 November 2010 at the age of 74. After studying at the Pierre de Fermat Lycée in Toulouse, Jean Blancou graduated from the Toulouse Veterinary School in 1960. He continued his studies in tropical veterinary medicine in Paris until 1963, extending his knowledge of immunology, microbiology, biochemistry and zoology, at the Institut Pasteur. He obtained his doctorate in biological sciences at the University of Nancy in 1982. Jean Blancou commenced his career as technical adviser to the Veterinary Services of Ethiopia where he directed a campaign against rinderpest in the south of the county. From 1965 to 1967 he was deputy director of the national veterinary laboratory in Niamey where he was responsible for the diagnosis of animal diseases and the production of veterinary vaccines. In 1967, he moved to the central livestock laboratory in Madagascar, where he commenced research on the diagnosis and control of dermatophilosis, bovine tuberculosis and other bacterial and parasitic diseases. In August 1968 he married Geneviève Orue. In 1975 he was appointed as head of the national veterinary laboratory in Senegal, where he remained until 1977. Initially deputy director, and then director of Research on rabies and wildlife diseases, at the World Health Organization collaborating centre in Nancy, he remained in this position until 1990. Jean Blancou was recognised as a world authority on rabies. He conducted research into the diagnosis, aetiology, epidemiology and control of rabies during his time in Nancy. Between 1988 and 1990, Dr Blancou also headed the animal health and protection department of the Centre national d'études vétérinaires et animales (CNEVA) in Maisons-Alfort. On 1 January 1991, he was appointed director general of the World Organisation for Animal Health (Office International des Épizooties: OIE) and was re-elected in 1995 for a further five-year term, until he

  14. A propósito de “L’initiation à la traduction économique” de Jean Delisle (1988

    Directory of Open Access Journals (Sweden)

    María Magdalena Vila Barbosa

    2013-06-01

    Full Text Available http://dx.doi.org/10.5007/2175-7968.2013v1n31p205 A partir de la publicación de L’analyse du discours comme méthode de traduction de Jean Delisle (1980 se empieza a aplicar a la enseñanza de la traducción el concepto de objetivos didácticos y se comienzan a elaborar de programaciones detalladas para el aula de traducción. Esta obra del autor canadiense es referencia ineludible en todas las  investigaciones en el campo de la didáctica de la traducción. Ocho años más tarde, Delisle publicaba en Meta su propuesta metodológica para la enseñanza de la traducción de textos económicos. A partir de su propia experiencia como docente y como traductor en activo, Delisle propone un método articulado en cinco objetivos que facilitan el aprendizaje y la asimilación de los conocimientos teóricos y prácticos necesarios para enfrentarse a la traducción de textos de naturaleza esencialmente económica. Una de las aportaciones más importantes en la enseñanza de la traducción ha sido las propuestas de organización de la enseñanza mediante el diseño de objetivos de aprendizaje y la búsqueda de una metodología didáctica activa (Hurtado: 1999. En este sentido, Jean Delisle abrió un camino en el que se sentaron los cimientos de la didáctica de la traducción a comienzos del siglo XXI.

  15. Jean-Louis Brachet (1789-1858). A forgotten contributor to early 19th century neurology.

    Science.gov (United States)

    Walusinski, O

    2015-10-01

    Specialists of the history of hysteria know the name of Jean-Louis Brachet (1789-1858), but few realise the influence of this physician and surgeon from Lyon, a city in the southeastern part of France. Not only a clinician, he was also a neurophysiology researcher in the early 19th century. Along with his descriptions of meningoencephalitis, including hydrocephalus and meningoencephalitis, he elucidated the functioning of the vegetative nervous system and described its activity during emotional states. He also helped describe the different forms of epilepsy and sought to understand their aetiologies, working at the same time as the better-known Louis-Florentin Calmeil (1798-1895). We present a biography of this forgotten physician, a prolific writer, keen clinical observer and staunch devotee of a rigorous scientific approach. Copyright © 2015 Elsevier Masson SAS. All rights reserved.

  16. Jean-Anthelme Brillat-Savarin's 1825 treatise on the mouth and ingestion.

    Science.gov (United States)

    Chong, Gabriel Tse Feng

    2012-12-01

    This article quotes and discusses Jean-Anthelme Brillat-Savarin's musings on the mouth and ingestion as described in his book The Physiology of Taste. The book was first published in France in December 1825, and is still widely read as a key work in Gastronomy today. The mouth is intimately related to the acts of chewing, swallowing and eating and it would be interesting to report an early 19th century epicurean's views on the mouth. Passages from Brillat-Savarin's book describing the functions of the teeth and tongue and the acts of tasting, chewing, and swallowing are quoted in full. Anecdotes also include one on the horrifying punishment of having one's tongue removed and another illustrating the poor oral health found among Europeans of that era. His work offers a unique glimpse into how a 19th century gastronome viewed the oral cavity and its gastronomical functions. While some of his writings may appear archaic and antediluvian to the modern reader; others relating to, for example chewing and swallowing, are surprisingly accurate by contemporary standards. Nonetheless, the gastronomic savant seemed to know a lot right about modern stomatology! Copyright © 2012. Published by Elsevier B.V.

  17. "To afford the wounded speedy assistance": Dominique Jean Larrey and Napoleon.

    Science.gov (United States)

    Skandalakis, Panagiotis N; Lainas, Panagiotis; Zoras, Odyseas; Skandalakis, John E; Mirilas, Petros

    2006-08-01

    Dominique Jean Larrey (1766-1842) has been described as the father of modern military surgery and is considered even today as the model military surgeon. He developed a plan of rapid evacuation of wounded soldiers from the battlefield during combat, using flexible medical units which he named ambulances volantes ("flying ambulances"). He won the admiration of Napoleon Bonaparte (1769-1821), who was amazed by the results of Larrey's sanitary system. Larrey spent almost 18 years with Napoleon, accompanying him in 25 campaigns, 60 battles, and more than 400 engagements. Napoleon's enormous military success was due not only to his strategy and skill but also to the medical services provided by Larrey. The surgeon became a master of wound management and limb amputation. In his vivid battlefield journals, Larrey documented the course of tetanus, the pathophysiology of cold injury, the effective control of hemorrhage, the drainage of empyema and hemothorax, the aspiration of pericardial effusion or hemopericardium, and the packing of sucking chest wounds. Larrey established a categorical rule for the triage of war casualties, treating the wounded according to the observed gravity of their injuries and the urgency for medical care, regardless of their rank or nationality.

  18. Hydrogen molecules and hydrogen-related defects in crystalline silicon

    Science.gov (United States)

    Fukata, N.; Sasaki, S.; Murakami, K.; Ishioka, K.; Nakamura, K. G.; Kitajima, M.; Fujimura, S.; Kikuchi, J.; Haneda, H.

    1997-09-01

    We have found that hydrogen exists in molecular form in crystalline silicon treated with hydrogen atoms in the downstream of a hydrogen plasma. The vibrational Raman line of hydrogen molecules is observed at 4158 cm-1 for silicon samples hydrogenated between 180 and 500 °C. The assignment of the Raman line is confirmed by its isotope shift to 2990 cm-1 for silicon treated with deuterium atoms. The Raman intensity has a maximum for hydrogenation at 400 °C. The vibrational Raman line of the hydrogen molecules is broad and asymmetric. It consists of at least two components, possibly arising from hydrogen molecules in different occupation sites in crystalline silicon. The rotational Raman line of hydrogen molecules is observed at 590 cm-1. The Raman band of Si-H stretching is observed for hydrogenation temperatures between 100 and 500 °C and the intensity has a maximum for hydrogenation at 250 °C.

  19. Jean DeBernardi, The Way that Lives in the Heart. Chinese Popular Religion and Spirit-Mediums in Penang, Malaysia

    OpenAIRE

    Goossaert, Vincent

    2009-01-01

    Jean DeBernardi a mené ses recherches anthropologiques sur la communauté chinoise de l’île de Penang en Malaisie depuis la fin des années soixante-dix, et en a tiré successivement deux ouvrages. L’un (Rites of Belonging: Memory, Modernity, and Identity in a Malaysian Chinese community. Stanford, Stanford University Press, 2004) trace une histoire de l’organisation religieuse de cette communauté et du rôle de la religion dans la formation des identités ethniques et culturelles dans le contexte...

  20. Jean-Pierre Abbet & Daniel Stoecklin, « We were talking… » Les Beatles en héritage

    OpenAIRE

    Nikoghosyan, Nuné

    2012-01-01

    Voici un ouvrage autour des Beatles qui n’est pas une biographie, ni une étude sociologique, mais une collection d’essais par deux sociologues. Dans « We were talking » Les Beatles en héritage, Jean-Pierre Abbet et Daniel Stoecklin prennent un style discursif libre et, ne visant pas une neutralité scientifique, proposent leurs points de vue personnels sur des thèmes divers autour des Beatles. Les thèmes varient de l’œuvre des Beatles à la « Beatlemania » comme phénomène social, en passant par...

  1. Hydrogen concentration control utilizing a hydrogen permeable membrane

    International Nuclear Information System (INIS)

    Keating, S.J. Jr.

    1976-01-01

    The concentration of hydrogen in a fluid mixture is controlled to a desired concentration by flowing the fluid through one chamber of a diffusion cell separated into two chambers by a hydrogen permeable membrane. A gradient of hydrogen partial pressure is maintained across the membrane to cause diffusion of hydrogen through the membrane to maintain the concentration of hydrogen in the fluid mixture at the predetermined level. The invention has particular utility for the purpose of injecting into and/or separating hydrogen from the reactor coolant of a nuclear reactor system

  2. Highlights from e-EPS: Jean-Michel Raimond wins EPS Edison-Volta Prize 2014

    CERN Multimedia

    Martina Knoop, e-EPS News

    2014-01-01

    e-EPS News is a monthly addition to the CERN Bulletin line-up, showcasing articles from e-EPS – the European Physical Society newsletter – as part of a collaboration between the two publications.   The European Physical Society has the pleasure to announce that the 2014 EPS Edison-Volta Prize is awarded to Jean-Michel Raimond for “seminal contribution to physics (that) have paved the way for novel explorations of quantum mechanics and have opened new routes in quantum information processing”. J.-M. Raimond’s PhD thesis was supervised by Serge Haroche at the École Normale Supérieure in Paris, France, in the early 1980′s, and together S. Haroche, M. Brune and J.-M. Raimond have built an extremely successful research group since then. J.-M. Raimond has made seminal contributions to the development of cavity QED experiments, in particular involving circular Rydberg atoms interacting with very high-Q superc...

  3. The Hawthorne experiments and the introduction of Jean Piaget in American industrial psychology, 1929-1932.

    Science.gov (United States)

    Hsueh, Yeh

    2002-05-01

    The Hawthorne interview program between 1929 and 1932 was one of the most significant industrial studies in the United States. The Hawthorne researchers applied Jean Piaget's clinical method in their extensive interviews with tens of thousands of workers. Chiefly responsible for the program's methodology was Elton Mayo, an Australian who saw interviewing as a means to promote social cooperation. Previous discussions of the Hawthorne experiments have ignored the influence of Piaget in the social sciences. This article provides an account of Mayo's and the Hawthorne researchers' efforts to fuse Piaget's innovation with burgeoning American industrial psychology. The endeavor was not an isolated event but rather drew on the theories and practice of Janet-Piaget psychology, on the support of the Laura Spelman Rockefeller Memorial Foundation, and on the discourse among social scientists about Piaget's work.

  4. Hydrogen safety

    International Nuclear Information System (INIS)

    Frazier, W.R.

    1991-01-01

    The NASA experience with hydrogen began in the 1950s when the National Advisory Committee on Aeronautics (NACA) research on rocket fuels was inherited by the newly formed National Aeronautics and Space Administration (NASA). Initial emphasis on the use of hydrogen as a fuel for high-altitude probes, satellites, and aircraft limited the available data on hydrogen hazards to small quantities of hydrogen. NASA began to use hydrogen as the principal liquid propellant for launch vehicles and quickly determined the need for hydrogen safety documentation to support design and operational requirements. The resulting NASA approach to hydrogen safety requires a joint effort by design and safety engineering to address hydrogen hazards and develop procedures for safe operation of equipment and facilities. NASA also determined the need for rigorous training and certification programs for personnel involved with hydrogen use. NASA's current use of hydrogen is mainly for large heavy-lift vehicle propulsion, which necessitates storage of large quantities for fueling space shots and for testing. Future use will involve new applications such as thermal imaging

  5. Hydrogen isotope effect through Pd in hydrogen transport pipe

    International Nuclear Information System (INIS)

    Tamaki, Masayoshi

    1992-01-01

    This investigation concerns hydrogen system with hydrogen transport pipes for transportation, purification, isotope separation and storage of hydrogen and its isotopes. A principle of the hydrogen transport pipe (heat pipe having hydrogen transport function) was proposed. It is comprised of the heat pipe and palladium alloy tubes as inlet, outlet, and the separation membrane of hydrogen. The operation was as follows: (1) gas was introduced into the heat pipe through the membrane in the evaporator; (2) the introduced gas was transported toward the condenser by the vapor flow; (3) the transported gas was swept and compressed to the end of the condenser by the vapor pressure; and (4) the compressed gas was exhausted from the heat pipe through the membrane in the condenser. The characteristics of the hydrogen transport pipe were examined for various working conditions. Basic performance concerning transportation, evacuation and compression was experimentally verified. Isotopic dihydrogen gases (H 2 and D 2 ) were used as feed gas for examining the intrinsic performance of the isotope separation by the hydrogen transport pipe. A simulated experiment for hydrogen isotope separation was carried out using a hydrogen-helium gas mixture. The hydrogen transport pipe has a potential for isotope separation and purification of hydrogen, deuterium and tritium in fusion reactor technology. (author)

  6. Chinese vegetative materia medica in a venereological treatise by Jean Astruc from 1740.

    Science.gov (United States)

    Drobnik, Jacek

    2016-07-01

    Historical medical sources can be still queried for forgotten cures and remedies. Traditional Chinese medicine has dealt with lues venerea (syphilis) since the Five Dynasties period (10th century). Chinese indigenous materia medica and remedies recorded, studied or imported by the Europeans can reveal known or quite unknown medicinal plants. The studied Jean Astruc's work is a published ethnopharmacological survey carried out in Beijing in the 1730s and it deserves a modern interpretation. This is the first proposal to identify historical Chinese medicinal plants listed in a scarcely known medical treatise De Morbis venereis… ('On venereal diseases…') by Jean Astruc from 1740. I searched for the current uses and position of the taxonomically identified herbal stock in both traditional Chinese and official medical knowledge, with special attention to syphilis. Chinese names of drugs and their botanical identities (originally expressed by means of pre-Linnaean polynomials, and now interpreted as accepted binomials) were independently cross-checked with younger till most recent taxonomical and ethnopharmacological sources. Plants and drugs identified this way were queried for their modern applications in traditional Chinese and official medicine with special attention to sexually transmitted diseases (STD) and other uses which are similar to the 18th-century understanding of venereology. For 24 items of medicinal stock, 34 medicinal plants have been identified or suspected: Acacia catechu, Achyranthes bidentata, Akebia quinata, Angelica dahurica, A. sinensis, Aquilaria sinensis, Aralia cordata, Aristolochia fangchi, Chaenomeles sinensis, Ch. speciosa, Clematis vitalba, Coix lacryma-jobi, Commiphora myrrha, Cydonia oblonga, Daemonorops draco, D. jenkinsiana, Dictamnus dasycarpus, Dryobalanops sumatrensis, Forsythia suspensa, Glycyrrhiza uralensis, Lonicera confusa, L. hypoglauca, L. japonica, Ligusticum striatum (=L. chuanxiong), Piper kadsura, Pterocarpus

  7. Future hydrogen markets for large-scale hydrogen production systems

    International Nuclear Information System (INIS)

    Forsberg, Charles W.

    2007-01-01

    The cost of delivered hydrogen includes production, storage, and distribution. For equal production costs, large users (>10 6 m 3 /day) will favor high-volume centralized hydrogen production technologies to avoid collection costs for hydrogen from widely distributed sources. Potential hydrogen markets were examined to identify and characterize those markets that will favor large-scale hydrogen production technologies. The two high-volume centralized hydrogen production technologies are nuclear energy and fossil energy with carbon dioxide sequestration. The potential markets for these technologies are: (1) production of liquid fuels (gasoline, diesel and jet) including liquid fuels with no net greenhouse gas emissions and (2) peak electricity production. The development of high-volume centralized hydrogen production technologies requires an understanding of the markets to (1) define hydrogen production requirements (purity, pressure, volumes, need for co-product oxygen, etc.); (2) define and develop technologies to use the hydrogen, and (3) create the industrial partnerships to commercialize such technologies. (author)

  8. Hydrogen embrittlement due to hydrogen-inclusion interactions

    International Nuclear Information System (INIS)

    Yu, H.Y.; Li, J.C.M.

    1976-01-01

    Plastic flow around inclusions creates elastic misfit which attracts hydrogen towards the regions of positive dilatation. Upon decohesion of the inclusion-matrix interface, the excess hydrogen escapes into the void and can produce sufficient pressure to cause void growth by plastic deformation. This mechanism of hydrogen embrittlement can be used to understand the increase of ductility with temperature, the decrease of ductility with hydrogen content, and the increase of ductility with the ultimate strength of the matrix. An examination of the effect of the shape of spheroid inclusion reveals that rods are more susceptible to hydrogen embrittlement than disks. The size of the inclusion is unimportant while the volume fraction of inclusions plays the usual role

  9. Hydrogen molecules and hydrogen-related defects in crystalline silicon

    OpenAIRE

    Fukata, N.; Sasak, S.; Murakami, K.; Ishioka, K.; Nakamura, K. G.; Kitajima, M.; Fujimura, S.; Kikuchi, J.; Haneda, H.

    1997-01-01

    We have found that hydrogen exists in molecular form in crystalline silicon treated with hydrogen atoms in the downstream of a hydrogen plasma. The vibrational Raman line of hydrogen molecules is observed at 4158cm-1 for silicon samples hydrogenated between 180 and 500 °C. The assignment of the Raman line is confirmed by its isotope shift to 2990cm-1 for silicon treated with deuterium atoms. The Raman intensity has a maximum for hydrogenation at 400 °C. The vibrational Raman line of the hydro...

  10. Why hydrogen; Pourquoi l'hydrogene?

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2004-02-01

    The energy consumption increase and the associated environmental risks, led to develop new energy sources. The authors present the potentialities of the hydrogen in this context of energy supply safety. They detail the today market and the perspectives, the energy sources for the hydrogen production (fossils, nuclear and renewable), the hydrogen transport, storage, distribution and conversion, the application domains, the associated risks. (A.L.B.)

  11. Hydrogen Embrittlement

    Science.gov (United States)

    Woods, Stephen; Lee, Jonathan A.

    2016-01-01

    Hydrogen embrittlement (HE) is a process resulting in a decrease in the fracture toughness or ductility of a metal due to the presence of atomic hydrogen. In addition to pure hydrogen gas as a direct source for the absorption of atomic hydrogen, the damaging effect can manifest itself from other hydrogen-containing gas species such as hydrogen sulfide (H2S), hydrogen chloride (HCl), and hydrogen bromide (HBr) environments. It has been known that H2S environment may result in a much more severe condition of embrittlement than pure hydrogen gas (H2) for certain types of alloys at similar conditions of stress and gas pressure. The reduction of fracture loads can occur at levels well below the yield strength of the material. Hydrogen embrittlement is usually manifest in terms of singular sharp cracks, in contrast to the extensive branching observed for stress corrosion cracking. The initial crack openings and the local deformation associated with crack propagation may be so small that they are difficult to detect except in special nondestructive examinations. Cracks due to HE can grow rapidly with little macroscopic evidence of mechanical deformation in materials that are normally quite ductile. This Technical Memorandum presents a comprehensive review of experimental data for the effects of gaseous Hydrogen Environment Embrittlement (HEE) for several types of metallic materials. Common material screening methods are used to rate the hydrogen degradation of mechanical properties that occur while the material is under an applied stress and exposed to gaseous hydrogen as compared to air or helium, under slow strain rates (SSR) testing. Due to the simplicity and accelerated nature of these tests, the results expressed in terms of HEE index are not intended to necessarily represent true hydrogen service environment for long-term exposure, but rather to provide a practical approach for material screening, which is a useful concept to qualitatively evaluate the severity of

  12. [The market at the heart of the invention of the museum ? : Jean-Baptiste-Pierre Lebrun at the Louvre (1792-1802)].

    Science.gov (United States)

    Guichard, Charlotte

    2011-01-01

    Before Vivant Denon, the dealer Jean-Baptiste-Pierre Lebrun played a crucial role in the creation of the Louvre collections, despite the revolutionary discourse which opposed the market to the museum. Lebrun's position as a polemicist is interpreted here as a strategy of self-presentation which made possible the controversial birth of the figure of the museum expert. With Lebrun, the Louvre imposed itself as a public space of artistic expertise, where values imported from the market - such as attributionism, materiality, and authenticity - became prominent in the evaluation of paintings.

  13. Le paysage atlantique dans Lettres à ma fille de Jean Désy. Entre projection et plongée

    OpenAIRE

    Myriam Marcil-Bergeron

    2015-01-01

    L’écrivain-voyageur Jean Désy raconte dans Lettres à ma fille (1997) sa première navigation hauturière, qui consiste en une traversée de l’océan Atlantique à la voile. Deux pôles orientent la représentation du grand large dans ce récit, soit la projection du voyageur vers le dehors et la plongée dans ses souvenirs des paysages nordiques et sylvestres. Par une approche géopoétique, cet article vise à examiner les effets du rythme et de la polysensorialité ainsi que la manière dont l’expérience...

  14. Jean-Louis Guereña (éd.), La sexualidad en la España contemporánea (1808-1950)

    OpenAIRE

    Heras, Beatriz de las

    2013-01-01

    Interesante compilación de artículos que incluye la edición a cargo de Jean-Louis Guereña y el servicio de publicaciones de la Universidad de Cádiz. Un volumen que, partiendo de la historia social y cultural (el editor señala que «esta historia social de la sexualidad ha de ser al mismo tiempo una historia cultural de la sexualidad»), se acerca a un tema tradicionalmente olvidado por los historiadores españoles, que no por la academia francesa o anglosajona: la sexualidad en los siglos xix y ...

  15. Fuel Cell and Hydrogen Technology Validation | Hydrogen and Fuel Cells |

    Science.gov (United States)

    NREL Fuel Cell and Hydrogen Technology Validation Fuel Cell and Hydrogen Technology Validation The NREL technology validation team works on validating hydrogen fuel cell electric vehicles; hydrogen fueling infrastructure; hydrogen system components; and fuel cell use in early market applications such as

  16. Hydrogen program overview

    Energy Technology Data Exchange (ETDEWEB)

    Gronich, S. [Dept. of Energy, Washington, DC (United States). Office of Utility Technologies

    1997-12-31

    This paper consists of viewgraphs which summarize the following: Hydrogen program structure; Goals for hydrogen production research; Goals for hydrogen storage and utilization research; Technology validation; DOE technology validation activities supporting hydrogen pathways; Near-term opportunities for hydrogen; Market for hydrogen; and List of solicitation awards. It is concluded that a full transition toward a hydrogen economy can begin in the next decade.

  17. The prospects for hydrogen as an energy carrier: an overview of hydrogen energy and hydrogen energy systems

    International Nuclear Information System (INIS)

    Rosen, Marc A.; Koohi-Fayegh, Seama

    2016-01-01

    Hydrogen is expected to play a key role as an energy carrier in future energy systems of the world. As fossil-fuel supplies become scarcer and environmental concerns increase, hydrogen is likely to become an increasingly important chemical energy carrier and eventually may become the principal chemical energy carrier. When most of the world's energy sources become non-fossil based, hydrogen and electricity are expected to be the two dominant energy carriers for the provision of end-use services. In such a ''hydrogen economy,'' the two complementary energy carriers, hydrogen and electricity, are used to satisfy most of the requirements of energy consumers. A transition era will bridge the gap between today's fossil-fuel economy and a hydrogen economy, in which non-fossil-derived hydrogen will be used to extend the lifetime of the world's fossil fuels - by upgrading heavy oils, for instance - and the infrastructure needed to support a hydrogen economy is gradually developed. In this paper, the role of hydrogen as an energy carrier and hydrogen energy systems' technologies and their economics are described. Also, the social and political implications of hydrogen energy are examined, and the questions of when and where hydrogen is likely to become important are addressed. Examples are provided to illustrate key points. (orig.)

  18. Hydrogen economy

    Energy Technology Data Exchange (ETDEWEB)

    Pahwa, P.K.; Pahwa, Gulshan Kumar

    2013-10-01

    In the future, our energy systems will need to be renewable and sustainable, efficient and cost-effective, convenient and safe. Hydrogen has been proposed as the perfect fuel for this future energy system. The availability of a reliable and cost-effective supply, safe and efficient storage, and convenient end use of hydrogen will be essential for a transition to a hydrogen economy. Research is being conducted throughout the world for the development of safe, cost-effective hydrogen production, storage, and end-use technologies that support and foster this transition. This book discusses hydrogen economy vis-a-vis sustainable development. It examines the link between development and energy, prospects of sustainable development, significance of hydrogen energy economy, and provides an authoritative and up-to-date scientific account of hydrogen generation, storage, transportation, and safety.

  19. Ivan Djaja (Jean Giaja)1 and the Belgrade School of Physiology

    Science.gov (United States)

    Andjus, Pavle R.; Stojilkovic, Stanko S.; Cvijic, Gordana

    2016-01-01

    Summary The founder of physiology studies in the Balkans and the pioneer of research on hypothermia, Ivan Djaja (Jean Giaja) was born 1884 in L’Havre. Giaja gained his PhD at the Sorbonne in 1909. In 1910 he established the first Chair of Physiology in the Balkans and organized the first Serbian Institute for Physiology at the School of Philosophy of the University of Belgrade. He led this Institute for more than 40 subsequent years. His most notable papers were in the field of thermoregulation and bioenergetics. Djaja became member of the Serbian and Croatian academies of science and doctor honoris causa of Sorbonne. In 1952 for the seminal work on the behaviour of deep cooled warm blooded animals he becane associate member of the National Medical Academy in Paris. In 1955 the French Academy of Sciences elected him as associate member in place of deceased Sir Alexander Fleming. Djaja died in 1957 during a congress held in his honour. He left more than 200 scientific and other papers and the golden DaVincian credo “Nulla dies sine experimento”. His legacy was continued by several generations of researchers, the most prominent among them being Stefan Gelineo, Radoslav Andjus and Vojislav Petrović. PMID:21777022

  20. Jean-Baptiste Labat and the buccaneer barbecue in seventeenth-century Martinique.

    Science.gov (United States)

    Toczyski, Suzanne

    2010-01-01

    If, as the sociologist Pierre L. van den Berghe has suggested, cuisine is a significant expression of man's sociability, one might say that the seventeenth-century missionary Jean-Baptiste Labat was the single most social animal in the Caribbean islands in the 1690s. Although his primary responsibility on the island of Martinique was to serve the island's multiethnic population as a spiritual leader, le père Labat's memoirs chronicle the diverse culinary experiences of the missionary as he literally eats his way around the island, learning to prepare such delicacies as cocoa confit, roasted manatee, lizard en brochette, and parakeet en daube. Positing his unbridled interest in the culinary arts as a mark of his “obedience” to the duties assigned him as missionary, Labat's taxonomy of island delicacies and exotic tastes no doubt titillated the curiosity of his mainland readers while nevertheless grounding itself strongly in the values of order, authenticity, and industry so essential to Labat's apostolic mission. This article focuses on two “buccaneer barbecues” as examples of gastronomical experiences through which Labat was able to construct and negotiate new social, cultural, and symbolic meanings, exploring identity politics through the frame of the culinary arts in seventeenth-century Martinique.

  1. Hydrogen detector

    International Nuclear Information System (INIS)

    Kumagaya, Hiromichi; Yoshida, Kazuo; Sanada, Kazuo; Chigira, Sadao.

    1994-01-01

    The present invention concerns a hydrogen detector for detecting water-sodium reaction. The hydrogen detector comprises a sensor portion having coiled optical fibers and detects hydrogen on the basis of the increase of light transmission loss upon hydrogen absorption. In the hydrogen detector, optical fibers are wound around and welded to the outer circumference of a quartz rod, as well as the thickness of the clad layer of the optical fiber is reduced by etching. With such procedures, size of the hydrogen detecting sensor portion can be decreased easily. Further, since it can be used at high temperature, diffusion rate is improved to shorten the detection time. (N.H.)

  2. La Sentence de Jean Genet : expérience du journal, journal de l’expérience

    Directory of Open Access Journals (Sweden)

    Thomas Liano

    2016-05-01

    Full Text Available Publié récemment La Sentence de Jean Genet est pour de multiples raisons un texte de transition : il marque non seulement la transition littéraire entre le théâtre genétien et Un captif amoureux, ou la transition politique entre le Black Panther Party et les Palestiniens, mais il marque plus significativement la transition entre une période d'écriture journalistique et le retour à la fiction. Nous utiliserons les liens alors récents entre Genet et la presse pour lire La Sentence comme un texte porteur de la marque d'un refus : le refus d'un choix clair entre écriture littéraire et écriture journalistique. A l'aide d'une étude de la mise en page du texte autant que de son contenu, nous montrerons que l'intégration de la presse dans l'écriture littéraire, loin de marquer la dégradation du style genétien, permet une revitalisation proprement créative de ce dernier. The recently published La Sentence by Jean Genet is in many ways a transitory text: indeed, it represents a literary transition from his theatre to Un captif amoureux; a political transition from the Black Panther Party to the Palestinians; and more importantly a transition from a period in which the author mainly practiced journalism to a return to fiction. Using the recently established link between Genet and the newspapers as a key element to analyse La Sentence, we will argue that the undefined status of this text is due to the writer’s refusal of a clear choice between the two types of writings he has been performing. Drawing on the implications of this choice, through a study both of the content and of the page layout chosen by Genet, we will detect how bringing press models into literary writing should be perceived not as a degradation of Genet’s style, but as a highly creative way to refresh it.

  3. Pierre-Jean Mariette, enlightened art connoisseur and scholar of art history : Mariette and the Science of the Connoisseur in Eighteenth-Century Europe by Kristen Smentek, Farnham: Ashgate, 2014

    NARCIS (Netherlands)

    Vermeulen, I.R.

    2017-01-01

    In her book Smentek brings back to life the rich scope of economic and scholarly activities and social ambitions employed by the art dealer and collector of European renown, Jean-Pierre Mariette (1694-1774). By concentrating on the various artistic media in which he was primarily involved, she each

  4. The prospects for hydrogen as an energy carrier: an overview of hydrogen energy and hydrogen energy systems

    Energy Technology Data Exchange (ETDEWEB)

    Rosen, Marc A.; Koohi-Fayegh, Seama [Ontario Univ., Oshawa, ON (Canada). Inst. of Technology

    2016-02-15

    Hydrogen is expected to play a key role as an energy carrier in future energy systems of the world. As fossil-fuel supplies become scarcer and environmental concerns increase, hydrogen is likely to become an increasingly important chemical energy carrier and eventually may become the principal chemical energy carrier. When most of the world's energy sources become non-fossil based, hydrogen and electricity are expected to be the two dominant energy carriers for the provision of end-use services. In such a ''hydrogen economy,'' the two complementary energy carriers, hydrogen and electricity, are used to satisfy most of the requirements of energy consumers. A transition era will bridge the gap between today's fossil-fuel economy and a hydrogen economy, in which non-fossil-derived hydrogen will be used to extend the lifetime of the world's fossil fuels - by upgrading heavy oils, for instance - and the infrastructure needed to support a hydrogen economy is gradually developed. In this paper, the role of hydrogen as an energy carrier and hydrogen energy systems' technologies and their economics are described. Also, the social and political implications of hydrogen energy are examined, and the questions of when and where hydrogen is likely to become important are addressed. Examples are provided to illustrate key points. (orig.)

  5. A SEPARAÇÃO ENTRE ESFERA PÚBLICA E PRIVADA: UM CONFRONTO ENTRE JOHN LOCKE, JEAN-JACQUES ROUSSEAU E CAROLE PATEMAN

    OpenAIRE

    Cunha de Moura, Samantha Nagle

    2014-01-01

    RESUMO: O presente artigo busca problematizar a separação entre esfera pública e esfera privada, existente no modelo liberal burguês, como um substrato legitimador da imposição de papeis sociais e sexuais diferenciados para homens e mulheres. Para tanto, o trabalho confronta as ideias fundamentais do pensamento de John Locke e de Jean-Jacques Rousseau, teóricos liberais contratualistas do séc. XVII-XVIII, diante da teoria do contrato sexual da teórica feminista Carole Pateman. Palavras-cha...

  6. Naked, Deformed, Violated Body. A Montage in the Histoire(s du cinema of Jean-Luc Godard

    Directory of Open Access Journals (Sweden)

    Alberto Brodesco

    2013-07-01

    Full Text Available The article analyses Histoire(s du cinéma (1988-1998, a cinematic essay by Jean-Luc Godard, and in particular it focuses on the controversial montage in which the French director aligns extracts from a pornographic film, Tod Browning’s Freaks, and footage from the concentration camps. With this sequence Godard inquires his own theory of montage: the idea of a productive reconciliation between opposing realities. This shocking sequence (the violence of images is compared to a similar shock (the violence of asking to witness produced by a scene of the documentary Shoah by Claude Lanzmann. The trauma of Godard’s editing choice induces the viewer to examine the issues of the degradation of the indexical status of the film, the limits of representation and the ethics of the gaze.

  7. Jean-Martin Charcot's role in the 19th century study of music aphasia.

    Science.gov (United States)

    Johnson, Julene K; Lorch, Marjorie; Nicolas, Serge; Graziano, Amy

    2013-05-01

    Jean-Martin Charcot (1825-93) was a well-known French neurologist. Although he is widely recognized for his discovery of several neurological disorders and his research into aphasia, Charcot's ideas about how the brain processes music are less well known. Charcot discussed the music abilities of several patients in the context of his 'Friday Lessons' on aphasia, which took place at the Salpêtrière Hospital in Paris in 1883-84. In his most comprehensive discussion about music, Charcot described a professional trombone player who developed difficulty copying music notation and playing his instrument, thereby identifying a new isolated syndrome of music agraphia without aphasia. Because the description of this case was published only in Italian by one of his students, Domenico Miliotti, there has been considerable confusion and under-acknowledgement of Charcot's ideas about music and the brain. In this paper, we describe Charcot's ideas regarding music and place them within the historical context of the growing interest in the neurological underpinnings of music abilities that took place in the 1880s.

  8. Breath Hydrogen Produced by Ingestion of Commercial Hydrogen Water and Milk

    OpenAIRE

    Shimouchi, Akito; Nose, Kazutoshi; Yamaguchi, Makoto; Ishiguro, Hiroshi; Kondo, Takaharu

    2009-01-01

    Objective: To compare how and to what extent ingestion of hydrogen water and milk increase breath hydrogen in adults.Methods: Five subjects without specific diseases, ingested distilled or hydrogen water and milk as a reference material that could increase breath hydrogen. Their end-alveolar breath hydrogen was measured.Results: Ingestion of hydrogen water rapidly increased breath hydrogen to the maximal level of approximately 40 ppm 10–15 min after ingestion and thereafter rapidly decrease...

  9. Hydrogen - From hydrogen to energy production

    International Nuclear Information System (INIS)

    Klotz, Gregory

    2005-01-01

    More than a century ago, Jules Verne wrote in 'The Mysterious Island' that water would one day be employed as fuel: 'Hydrogen and oxygen, which constitute it, used singly or together, will furnish an inexhaustible source of heat and light'. Today, the 'water motor' is not entirely the dream of a writer. Fiction is about to become fact thanks to hydrogen, which can be produced from water and when burned in air itself produces water. Hydrogen is now at the heart of international research. So why do we have such great expectations of hydrogen? 'Hydrogen as an energy system is now a major challenge, both scientifically and from an environmental and economic point of view'. Dominated as it is by fossil fuels (oil, gas and coal), our current energy system has left a dual threat hovering over our environment, exposing the planet to the exhaustion of its natural reserves and contributing to the greenhouse effect. If we want sustainable development for future generations, it is becoming necessary to diversify our methods of producing energy. Hydrogen is not, of course, a source of energy, because first it has to be produced. But it has the twofold advantage of being both inexhaustible and non-polluting. So in the future, it should have a very important role to play. (author)

  10. Hydrogen fuel. Uses

    International Nuclear Information System (INIS)

    Darkrim-Lamari, F.; Malbrunot, P.

    2006-01-01

    Hydrogen is a very energetic fuel which can be used in combustion to generate heat and mechanical energy or which can be used to generate electricity and heat through an electrochemical reaction with oxygen. This article deals with the energy conversion, the availability and safety problems linked with the use of hydrogen, and with the socio-economical consequences of a generalized use of hydrogen: 1 - hydrogen energy conversion: hydrogen engines, aerospace applications, fuel cells (principle, different types, domains of application); 2 - hydrogen energy availability: transport and storage (gas pipelines, liquid hydrogen, adsorbed and absorbed hydrogen in solid materials), service stations; 3 - hazards and safety: flammability, explosibility, storage and transport safety, standards and regulations; 4 - hydrogen economy; 5 - conclusion. (J.S.)

  11. Solar hydrogen production: renewable hydrogen production by dry fuel reforming

    Science.gov (United States)

    Bakos, Jamie; Miyamoto, Henry K.

    2006-09-01

    SHEC LABS - Solar Hydrogen Energy Corporation constructed a pilot-plant to demonstrate a Dry Fuel Reforming (DFR) system that is heated primarily by sunlight focusing-mirrors. The pilot-plant consists of: 1) a solar mirror array and solar concentrator and shutter system; and 2) two thermo-catalytic reactors to convert Methane, Carbon Dioxide, and Water into Hydrogen. Results from the pilot study show that solar Hydrogen generation is feasible and cost-competitive with traditional Hydrogen production. More than 95% of Hydrogen commercially produced today is by the Steam Methane Reformation (SMR) of natural gas, a process that liberates Carbon Dioxide to the atmosphere. The SMR process provides a net energy loss of 30 to 35% when converting from Methane to Hydrogen. Solar Hydrogen production provides a 14% net energy gain when converting Methane into Hydrogen since the energy used to drive the process is from the sun. The environmental benefits of generating Hydrogen using renewable energy include significant greenhouse gas and criteria air contaminant reductions.

  12. Carbon Dioxide-Free Hydrogen Production with Integrated Hydrogen Separation and Storage.

    Science.gov (United States)

    Dürr, Stefan; Müller, Michael; Jorschick, Holger; Helmin, Marta; Bösmann, Andreas; Palkovits, Regina; Wasserscheid, Peter

    2017-01-10

    An integration of CO 2 -free hydrogen generation through methane decomposition coupled with hydrogen/methane separation and chemical hydrogen storage through liquid organic hydrogen carrier (LOHC) systems is demonstrated. A potential, very interesting application is the upgrading of stranded gas, for example, gas from a remote gas field or associated gas from off-shore oil drilling. Stranded gas can be effectively converted in a catalytic process by methane decomposition into solid carbon and a hydrogen/methane mixture that can be directly fed to a hydrogenation unit to load a LOHC with hydrogen. This allows for a straight-forward separation of hydrogen from CH 4 and conversion of hydrogen to a hydrogen-rich LOHC material. Both, the hydrogen-rich LOHC material and the generated carbon on metal can easily be transported to destinations of further industrial use by established transport systems, like ships or trucks. © 2017 Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim.

  13. Production of hydrogen from organic waste via hydrogen sulfide

    International Nuclear Information System (INIS)

    McMahon, M.; Davis, B.R.; Roy, A.; Daugulis, A.

    2007-01-01

    In this paper an integrated process is proposed that converts organic waste to hydrogen via hydrogen sulphide. The designed bioreactor has achieved high volumetric productivities comparable to methanogenic bioreactors. Proposed process has advantages of bio-methane production and is more resilient to process upset. Thermochemical conversion of hydrogen sulphide to hydrogen is exothermic and also requires smaller plant infrastructure

  14. Fuel Cell and Hydrogen Technologies Program | Hydrogen and Fuel Cells |

    Science.gov (United States)

    NREL Fuel Cell and Hydrogen Technologies Program Fuel Cell and Hydrogen Technologies Program Through its Fuel Cell and Hydrogen Technologies Program, NREL researches, develops, analyzes, and validates fuel cell and hydrogen production, delivery, and storage technologies for transportation

  15. Mise en perspective de l’article de Jean Duvignaud « L'idéologie, cancer de la conscience »

    OpenAIRE

    Corbeau, Jean-Pierre

    2007-01-01

    Introduction à l’article de Jean Duvignaud « L'idéologie, cancer de la conscience », paru en 1969 dans le volume 46 des Cahiers internationaux de sociologie. Sa thématique concerne, depuis toujours, l'ensemble de la communauté scientifique, au-delà des frontières artificielles ou obsolètes entre sciences sociales, humaines, politiques, économiques, juridiques, du vivant, etc. Ses analyses résonnent avec l'actualité, concernent la citoyenneté qui s'interroge sur le fonctionnement de nos sociét...

  16. The road to universal logic festschrift for 50th birthday of Jean-Yves Béziau

    CERN Document Server

    Buchsbaum, Arthur

    2015-01-01

    This is the first volume of a collection of papers in honor of the fiftieth birthday of Jean-Yves Béziau. These 25 papers have been written by internationally distinguished logicians, mathematicians, computer scientists, linguists and philosophers, including Arnon Avron, John Corcoran, Wilfrid Hodges, Laurence Horn, Lloyd Humbertsone, Dale Jacquette, David Makinson, Stephen Read, and Jan Woleński. It is a state-of-the-art source of cutting-edge studies in the new interdisciplinary field of universal logic. The papers touch upon a wide range of topics including combination of logic, non-classical logic, square and other geometrical figures of opposition, categorical logic, set theory, foundation of logic, philosophy and history of logic (Aristotle, Avicenna, Buridan, Schröder, MacColl). This book offers new perspectives and challenges in the study of logic and will be of interest to all students and researchers interested the nature and future of logic.

  17. The poetic nature of non-religious Spirituality: A point of view by Jean Paul Sartre

    Directory of Open Access Journals (Sweden)

    Alex Villas Boas

    2014-09-01

    Full Text Available This article proposes to examine some theories of non-religious spirituality in light of the growing phenomenon of those individuals who declared themselves as having "no religion" by Brazilian religious census conducted in 2010 by the Brazilian Institute of Geography and Statistics (IBGE. The intention here is to identify how the poetic question presents itself as the fundamental element of these proposals about spirituality for authors, since beauty is part of the spiritual quest, as in: Viktor Frankl and existential religiosity grounded in the search for meaning in life; Marià Corbí and his non-religious or secular spirituality; Robert Solomon and his spirituality for skeptics, and André Comte-Sponville and his atheistic spirituality, or spirituality without God. From there, we then present the perception of spirituality in the poetry of the thought of Jean Paul Sartre, primarily in his work “what is Literature?”

  18. The practice of nurses caring for families of pediatric inpatients in light of Jean Watson

    Directory of Open Access Journals (Sweden)

    Maiara Rodrigues dos Santos

    2014-08-01

    Full Text Available Objective To know the facilities and the difficulties of nurses in caring practice of hospitalized children’s families in the light of Jean Watson’s Theory of Human Caring. Method It was used the descriptive qualitative approach. The data collection was conducted in three stages: presentation of theoretical content; engagement with families in the light of Watson’s theory; and semi-structured interview with 12 pediatric nurses. The interviews were analysed using inductive thematic analysis, being possible to form three themes: Recognizing a framework for care; Considering the institutional context; and Challenges in family’s relationship. Results The theory favored reflections about self, about the institutions and about nurses’ relationship with the family of the child, normalized by a consciousness toward caring attitudes. Conclusion In this process, it is imperative that nurses recognize the philosophical-theoretical foundations of care to attend the child’s family in hospital.

  19. Hydrogen Village : creating hydrogen and fuel cell communities

    International Nuclear Information System (INIS)

    Smith, G.R.

    2009-01-01

    The Hydrogen Village (H2V) is a collaborative public-private partnership administered through Hydrogen and Fuel Cells Canada and funded by the Governments of Canada and Ontario. This end user-driven, market development program accelerates the commercialization of hydrogen and fuel cell (FC) technologies throughout the Greater Toronto Area (GTA). The program targets 3 specific aspects of market development, notably deployment of near market technologies in community based stationary and mobile applications; development of a coordinated hydrogen delivery and equipment service infrastructure; and societal factors involving corporate policy and public education. This presentation focused on lessons learned through outreach programs and the deployment of solid oxide fuel cell (SOFC) heat and power generation; indoor and outdoor fuel cell back up power systems; fuel cell-powered forklifts, delivery vehicles, and utility vehicles; hydrogen internal combustion engine powered shuttle buses, sedans, parade float; hydrogen production/refueling stations in the downtown core; and temporary fuel cell power systems

  20. Bertrand Lavedrine, Jean-Paul Gandolfo, L’Autochrome Lumière. Secrets d’ateliers et défis industriels

    OpenAIRE

    Boulouch, Nathalie

    2009-01-01

    Bien que l’autochrome ait bénéficié de l’attention régulière des historiens et des éditeurs depuis une quinzaine d’années, il restait encore une part importante de connaissances à révéler à propos de l’histoire industrielle du premier procédé de photographie couleur commercialisé en juin 1907 par la Société Lumière et ses fils. C’est chose faite avec cet ouvrage qui s’appuie sur les recherches menées de longue date par Bertrand Lavedrine et Jean-Paul Gandolfo. Sa qualité réside dans le tressa...

  1. De l’onirisme à l’ironie : les prestiges de la nuit dans l’Euphormion de Jean Barclay (1605)

    OpenAIRE

    Correard, Nicolas

    2017-01-01

    Publiée en 1605 par l’auteur franco-écossais Jean Barclay, la première partie de l’Euphormionis Lusinini Satyricon, roman satirique néo-latin, abonde en scènes nocturnes, durant lesquelles le personnage éponyme est confronté à une série de phénomènes au statut ambigu (feux follets, apparitions, songes). Événements surnaturels, ou naturels ? Le texte laisse place à l’interprétation, comme le montre la réception d’époque, notamment les traductions françaises, qui tendent à réduire son ambiguïté...

  2. Hydrogen energy assessment

    Energy Technology Data Exchange (ETDEWEB)

    Salzano, F J; Braun, C [eds.

    1977-09-01

    The purpose of this assessment is to define the near term and long term prospects for the use of hydrogen as an energy delivery medium. Possible applications of hydrogen are defined along with the associated technologies required for implementation. A major focus in the near term is on industrial uses of hydrogen for special applications. The major source of hydrogen in the near term is expected to be from coal, with hydrogen from electric sources supplying a smaller fraction. A number of potential applications for hydrogen in the long term are identified and the level of demand estimated. The results of a cost benefit study for R and D work on coal gasification to hydrogen and electrolytic production of hydrogen are presented in order to aid in defining approximate levels of R and D funding. A considerable amount of data is presented on the cost of producing hydrogen from various energy resources. A key conclusion of the study is that in time hydrogen is likely to play a role in the energy system; however, hydrogen is not yet competitive for most applications when compared to the cost of energy from petroleum and natural gas.

  3. Hydrogen separation process

    Science.gov (United States)

    Mundschau, Michael [Longmont, CO; Xie, Xiaobing [Foster City, CA; Evenson, IV, Carl; Grimmer, Paul [Longmont, CO; Wright, Harold [Longmont, CO

    2011-05-24

    A method for separating a hydrogen-rich product stream from a feed stream comprising hydrogen and at least one carbon-containing gas, comprising feeding the feed stream, at an inlet pressure greater than atmospheric pressure and a temperature greater than 200.degree. C., to a hydrogen separation membrane system comprising a membrane that is selectively permeable to hydrogen, and producing a hydrogen-rich permeate product stream on the permeate side of the membrane and a carbon dioxide-rich product raffinate stream on the raffinate side of the membrane. A method for separating a hydrogen-rich product stream from a feed stream comprising hydrogen and at least one carbon-containing gas, comprising feeding the feed stream, at an inlet pressure greater than atmospheric pressure and a temperature greater than 200.degree. C., to an integrated water gas shift/hydrogen separation membrane system wherein the hydrogen separation membrane system comprises a membrane that is selectively permeable to hydrogen, and producing a hydrogen-rich permeate product stream on the permeate side of the membrane and a carbon dioxide-rich product raffinate stream on the raffinate side of the membrane. A method for pretreating a membrane, comprising: heating the membrane to a desired operating temperature and desired feed pressure in a flow of inert gas for a sufficient time to cause the membrane to mechanically deform; decreasing the feed pressure to approximately ambient pressure; and optionally, flowing an oxidizing agent across the membrane before, during, or after deformation of the membrane. A method of supporting a hydrogen separation membrane system comprising selecting a hydrogen separation membrane system comprising one or more catalyst outer layers deposited on a hydrogen transport membrane layer and sealing the hydrogen separation membrane system to a porous support.

  4. Hydrogen energy stations: along the roadside to the hydrogen economy

    International Nuclear Information System (INIS)

    Clark, W.W.; Rifkin, J.; O'Connor, T.; Swisher, J.; Lipman, T.; Rambach, G.

    2005-01-01

    Hydrogen has become more than an international topic of discussion within government and among industry. With the public announcements from the European Union and American governments and an Executive Order from the Governor of California, hydrogen has become a ''paradigm change'' targeted toward changing decades of economic and societal behaviours. The public demand for clean and green energy as well as being ''independent'' or not located in political or societal conflict areas, has become paramount. The key issues are the commitment of governments through public policies along with corporations. Above all, secondly, the advancement of hydrogen is regional as it depends upon infrastructure and fuel resources. Hence, the hydrogen economy, to which the hydrogen highway is the main component, will be regional and creative. New jobs, businesses and opportunities are already emerging. And finally, the costs for the hydrogen economy are critical. The debate as to hydrogen being 5 years away from being commercial and available in the marketplace versus needing more research and development contradicts the historical development and deployment of any new technology be it bio-science, flat panel displays, computers or mobile phones. The market drivers are government regulations and standards soon thereafter matched by market forces and mass production. Hydrogen is no different. What this paper does is describes is how the hydrogen highway is the backbone to the hydrogen economy by becoming, with the next five years, both regional and commercial through supplying stationary power to communities. Soon thereafter, within five to ten years, these same hydrogen stations will be serving hundreds and then thousands of hydrogen fuel powered vehicles. Hydrogen is the fuel for distributed energy generation and hence positively impacts the future of public and private power generators. The paradigm has already changed. (author)

  5. Canadian Hydrogen Association workshop on building Canadian strength with hydrogen systems. Proceedings

    International Nuclear Information System (INIS)

    2006-01-01

    The Canadian Hydrogen Association workshop on 'Building Canadian Strength with Hydrogen Systems' was held in Montreal, Quebec, Canada on October 19-20, 2006. Over 100 delegates attended the workshop and there were over 50 presentations made. The Canadian Hydrogen Association (CHA) promotes the development of a hydrogen infrastructure and the commercialization of new, efficient and economic methods that accelerate the adoption of hydrogen technologies that will eventually replace fossil-based energy systems to reduce greenhouse gas emissions. This workshop focused on defining the strategic direction of research and development that will define the future of hydrogen related energy developments across Canada. It provided a forum to strengthen the research, development and innovation linkages among government, industry and academia to build Canadian strength with hydrogen systems. The presentations described new technologies and the companies that are making small scale hydrogen and hydrogen powered vehicles. Other topics of discussion included storage issues, hydrogen safety, competition in the hydrogen market, hydrogen fuel cell opportunities, nuclear-based hydrogen production, and environmental impacts

  6. Abismos do reconhecimento: o legado sociofilosófico de Jean-Jacques Rousseau = Abysses of recognition: the sociophilosophical legacy of Jean-Jacques Rousseau

    Directory of Open Access Journals (Sweden)

    Honneth, Axel

    2013-01-01

    Full Text Available O texto se ocupa com a questão da interpretação da obra de Jean-Jacques Rousseau, em particular com suas referências sobre a dependência constitutiva em relação aos outros. Vista negativamente na crítica da cultura, mas positivamente nos esboços de um contrato social, o lugar dessa dependência constitutiva da confirmação e estima por parte dos outros está vinculada ao significado dado ao “amor próprio” nos diferentes textos; mas ela abre a possibilidade de interpretar Rousseau como um teórico do reconhecimento. O autor acompanha Rousseau em seu desenvolvimento teórico até o ponto em que ele se tornou consciente das exigências de uma forma sociocontratual, igualitária do reconhecimento mútuo, para depois expor a enorme influência que a ideia bipolar de Rousseau a respeito do reconhecimento social exerceu sobre a teoria social da modernidade: em sua variante negativa, a profunda necessidade dos seres humanos de sobrepujar os respectivos cossujeitos no grau de estima social, reinterpretada por Kant como sendo a força motriz do progresso cultural e social, e em sua variante positiva, o respeito mútuo entre iguais, desenvolvido por Fichte e Hegel na direção de uma teoria do reconhecimento relacionada ao direito e à moralidade. No final, Honneth discute o ceticismo com que Rousseau sempre viu a dependência de outros contida no “amor próprio”, deixando sem solução definitiva a tensão entre a ideia estoica de uma independência pessoal de toda avaliação alheia e a ideia intersubjetivista de uma profunda dependência do outro. (Resumo do editor

  7. Hydrogen in metals

    CSIR Research Space (South Africa)

    Carter, TJ

    2001-04-01

    Full Text Available .J. Cartera,*, L.A. Cornishb aAdvanced Engineering & Testing Services, MATTEK, CSIR, Private Bag X28, Auckland Park 2006, South Africa bSchool of Process and Materials Engineering, University of the Witwatersrand, Private Bag 3, P.O. WITS 2050, South Africa... are contrasted, and an unusual case study of hydrogen embrittlement of an alloy steel is presented. 7 2001 Published by Elsevier Science Ltd. Keywords: Hydrogen; Hydrogen-assisted cracking; Hydrogen damage; Hydrogen embrittlement 1. Introduction Hydrogen suC128...

  8. Pierre-Jean Mariette, enlightened art connoisseur and scholar of art history

    Directory of Open Access Journals (Sweden)

    Ingrid R. Vermeulen

    2017-06-01

    Full Text Available Review of Mariette and the Science of the Connoisseur in Eighteenth-Century Europe by Kristel Smentek, Farnham: Ashgate, 2014. In her book Smentek brings back to life the rich scope of economic and scholarly activities and social ambitions employed by the art dealer and collector of European renown, Jean-Pierre Mariette (1694-1774. By concentrating on the various artistic media in which he was primarily involved, she each time singles out an aspect of Mariette’s expertise. Economic and social shrewdness in the case of printmaking, the very core of his art connoisseurship in the case of drawing, and his art-historical scholarship in the case of gem engraving. In spite of the diverse connections she here creates between artistic medium and expertise, Smentek makes abundantly clear that the scientific method of art connoisseurship was underlying the employment of all these artistic media, which favoured empirical analysis in the historical understanding of art. She thereby makes a highly convincing case of the ways in which Mariette’s practices changed the terms in which the artistic past was scrutinized. On this basis it seems only logical to further research the impact of Mariette’s practices on art-scholarly projects initiated elsewhere in Europe and the ways it contributed to the emergence of art history as a modern discipline.

  9. Jean Painlevé : de la science à la fiction scientifique.

    Directory of Open Access Journals (Sweden)

    Florence Riou

    2009-12-01

    Full Text Available Si l'image documentaire, et à fortiori l'image scientifique est encore souvent perçue comme la réalité elle-même, elle n'est cependant qu’interprétation. Nous nous proposons ici, par une approche issue de l'histoire des techniques, d'interroger la construction des images liées à la pratique de biologiste. La mise en formes de ces images est tout à la fois le reflet de l'expérimentateur, de l'instrument, et celui de la connaissance de l'époque. Mais dans un désir de partage de la science au plus grand nombre, elles soulèvent aussi la question du lien existant entre science et fiction. Jean Painlevé (1902-1989, réalisateur et scientifique usant du cinématographe, met l'accent sur ce point dès les années trente. Conscient de notre tendance naturelle à l'anthropomorphisme, il souligne la nécessité d'une éducation du regard pour plus d'indépendance et d'esprit critique vis à vis des images. Et, en tirant du contenu scientifique lui même la substance et la dramaturgie de ses histoires, il propose une mise en fiction de la science qui renouvelle le genre documentaire.

  10. Hydrogen-Assisted IC Engine Combustion as a Route to Hydrogen Implementation

    Energy Technology Data Exchange (ETDEWEB)

    Andre Boehman; Daniel Haworth

    2008-09-30

    The 'Freedom Car' Initiative announced by the Bush Administration has placed a significant emphasis on development of a hydrogen economy in the United States. While the hydrogen-fueled fuel-cell vehicle that is the focus of the 'Freedom Car' program would rely on electrochemical energy conversion, and despite the large amount of resources being devoted to its objectives, near-term implementation of hydrogen in the transportation sector is not likely to arise from fuel cell cars. Instead, fuel blending and ''hydrogen-assisted'' combustion are more realizable pathways for wide-scale hydrogen utilization within the next ten years. Thus, a large potential avenue for utilization of hydrogen in transportation applications is through blending with natural gas, since there is an existing market for natural-gas vehicles of various classes, and since hydrogen can provide a means of achieving even stricter emissions standards. Another potential avenue is through use of hydrogen to 'assist' diesel combustion to permit alternate combustion strategies that can achieve lower emissions and higher efficiency. This project focused on developing the underlying fundamental information to support technologies that will facilitate the introduction of coal-derived hydrogen into the market. Two paths were envisioned for hydrogen utilization in transportation applications. One is for hydrogen to be mixed with other fuels, specifically natural gas, to enhance performance in existing natural gas-fueled vehicles (e.g., transit buses) and provide a practical and marketable avenue to begin using hydrogen in the field. A second is to use hydrogen to enable alternative combustion modes in existing diesel engines, such as homogeneous charge compression ignition, to permit enhanced efficiency and reduced emissions. Thus, this project on hydrogen-assisted combustion encompassed two major objectives: (1) Optimization of hydrogen-natural gas mixture

  11. Vanadium alloy membranes for high hydrogen permeability and suppressed hydrogen embrittlement

    International Nuclear Information System (INIS)

    Kim, Kwang Hee; Park, Hyeon Cheol; Lee, Jaeho; Cho, Eunseog; Lee, Sang Mock

    2013-01-01

    The structural properties and hydrogen permeation characteristics of ternary vanadium–iron–aluminum (V–Fe–Al) alloy were investigated. To achieve not only high hydrogen permeability but also strong resistance to hydrogen embrittlement, the alloy composition was modulated to show high hydrogen diffusivity but reduced hydrogen solubility. We demonstrated that matching the lattice constant to the value of pure V by co-alloying lattice-contracting and lattice-expanding elements was quite effective in maintaining high hydrogen diffusivity of pure V

  12. Technical files. Hydrogen memento; Fiches techniques. Memento de l'hydrogene

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2002-07-01

    This document is a compilation of 30 technical files about hydrogen and its related technologies. These files cover the following aspects: general considerations (world energy consumption growth, contribution of developing countries, atmospheric pollution and greenhouse effect, health impacts, actions implemented at the world scale, role of hydrogen); glossary and acronyms; units used and conversions; world energy situation (primary production, sectoral consumption, demand trends, environmental impact, situation of fossil fuel reserves); French energy situation (primary sources, energy independence ratio, electric power status, evolutions and trends of the French energy demand); fuel cells; basic data on hydrogen (thermodynamic properties and data); hydrogen production by water electrolysis, application to small capacity systems; thermochemical water dissociation; water photo-electrolysis; hydrogen pipeline networks in the world; mechanical energy production; hydrogen thermal engines; aeronautic applications; research laboratories; industrial actors of the hydrogen sector (companies, activities, geographical situation, financial structure, strategy, R and D, cooperations, projects etc..); hydrogen flammability and explosiveness; transport and storage safety; standards and regulations about hydrogen safety in France, in Europe and in the rest of the world; hydrogen programs in the world; the programs financed by the European Union; the German programs; the programs in Island, France and UK; the programs in North America; the Japanese programs; table of the main recent R and D projects per type of program; light vehicles with fuel cells; the Daimler-Chrysler program. (J.S.)

  13. Phase I clinical trial of HER2-specific immunotherapy with concomitant HER2 kinase inhibtion

    Directory of Open Access Journals (Sweden)

    Hamilton Erika

    2012-02-01

    Full Text Available Abstract Background Patients with HER2-overexpressing metastatic breast cancer, despite initially benefiting from the monoclonal antibody trastuzumab and the EGFR/HER2 tyrosine kinase inhibitor lapatinib, will eventually have progressive disease. HER2-based vaccines induce polyclonal antibody responses against HER2 that demonstrate enhanced anti-tumor activity when combined with lapatinib in murine models. We wished to test the clinical safety, immunogenicity, and activity of a HER2-based cancer vaccine, when combined with lapatinib. Methods We immunized women (n = 12 with metastatic, trastuzumab-refractory, HER2-overexpressing breast cancer with dHER2, a recombinant protein consisting of extracellular domain (ECD and a portion of the intracellular domain (ICD of HER2 combined with the adjuvant AS15, containing MPL, QS21, CpG and liposome. Lapatinib (1250 mg/day was administered concurrently. Peripheral blood antibody and T cell responses were measured. Results This regimen was well tolerated, with no cardiotoxicity. Anti-HER2-specific antibody was induced in all patients whereas HER2-specific T cells were detected in one patient. Preliminary analyses of patient serum demonstrated downstream signaling inhibition in HER2 expressing tumor cells. The median time to progression was 55 days, with the majority of patients progressing prior to induction of peak anti-HER2 immune responses; however, 300-day overall survival was 92% (95% CI: 77-100%. Conclusions dHER2 combined with lapatinib was safe and immunogenic with promising long term survival in those with HER2-overexpressing breast cancers refractory to trastuzumab. Further studies to define the anticancer activity of the antibodies induced by HER2 vaccines along with lapatinib are underway. Trial registry ClinicalTrials.gov NCT00952692

  14. Method for absorbing hydrogen using an oxidation resisant organic hydrogen getter

    Science.gov (United States)

    Shepodd, Timothy J [Livermore, CA; Buffleben, George M [Tracy, CA

    2009-02-03

    A composition for removing hydrogen from an atmosphere, comprising a mixture of a polyphenyl ether and a hydrogenation catalyst, preferably a precious metal catalyst, and most preferably platinum, is disclosed. This composition is stable in the presence of oxygen, will not polymerize or degrade upon exposure to temperatures in excess of 200.degree. C., or prolonged exposure to temperatures in the range of 100-300.degree. C. Moreover, these novel hydrogen getter materials can be used to efficiently remove hydrogen from mixtures of hydrogen/inert gas (e.g., He, Ar, N.sub.2), hydrogen/ammonia atmospheres, such as may be encountered in heat exchangers, and hydrogen/carbon dioxide atmospheres. Water vapor and common atmospheric gases have no adverse effect on the ability of these getter materials to absorb hydrogen.

  15. Hydrogenation properties of Zr films under various conditions of hydrogen plasma

    CERN Document Server

    Yan Guo Qiang; Zhou Zhu Ying; Zhao Guo Qing; Hu Pei Gang; Luo Shun Zhong; Peng Shu Ming; Ding Wei; Long Xing Gui

    2002-01-01

    The hydrogenation properties of Zr samples with and without an Ni overlayer under various plasma conditions were investigated by means of non-Rutherford backscattering and elastic recoil detection analysis. The theoretical maximum hydrogen capacity, 66.7 at%, could be achieved at a hydrogen absolute pressure of approx 2 Pa and a substrate temperature of approx 393K for a plasma irradiation of only 10 min; this was significantly greater than that for gas hydrogenation under the same hydrogen pressure and substrate temperature. It was also found that the C and O contamination on the sample surface strongly influences the hydrogenation, and that the maximum equilibrium hydrogen content drops dramatically with the increasing total contamination. In addition, the influence of the Ni overlayer on the plasma hydrogenation is discussed

  16. The hydrogen village: building hydrogen and fuel cell opportunities

    International Nuclear Information System (INIS)

    Smith, R.

    2006-01-01

    The presentation addressed the progress the Hydrogen Village Program has made in its first 24 months of existence and will provide an understanding of the development of new markets for emerging Hydrogen and Fuel Cell technologies based on first hand, real world experience. The Hydrogen Village (H2V) is an End User driven, Market Development Program designed to accelerate the sustainable commercialization of hydrogen and fuel cell technologies through awareness, education and early deployments throughout the greater Toronto area (GTA). The program is a collaborative public-private partnership of some 35 companies from a broad cross section of industry administered through Hydrogen and Fuel Cells Canada and funded by the Governments of Canada and Ontario. The intent of the H2V is to develop markets for Hydrogen and Fuel Cell technologies that benefit the local and global community. The following aspects of market development are specifically targeted: 1) Deployments: of near market technologies in all aspects of community life (stationary and mobile). All applications must be placed within the community and contact peoples in their day-to-day activity. End user involvement is critical to ensure that the applications chosen have a commercial justification and contribute to the complementary growth of the market. 2) Development: of a coordinated hydrogen delivery and equipment service infrastructure. The infrastructure will develop following the principles of conservation and sustainability. 3) Human and societal factors: - Public and Corporate policy, public education, Codes/ Standards/ Regulations - Opportunity for real world implementation and feedback on developing codes and standards - Build awareness among regulatory groups, public, and the media. The GTA Hydrogen Village is already well under way with strategically located projects covering a wide range of hydrogen and fuel cell applications including: Residential heat and power generation using solid oxide

  17. Jean-Léon Gérôme and Stanisław Chlebowski: The Story of a Friendship

    Directory of Open Access Journals (Sweden)

    Wójcik, Agata

    2010-12-01

    Full Text Available The aim of the article is to present the story of the relationship between Jean-Léon Gérôme and Stanisław Chlebowski. The reconstruction of their friendship is partly based on yet unpublished source materials on the life and work of Chlebowski. The artists met in the early 1860s. Their acquaintance became closer in 1875 when Gérôme stayed in Istanbul at Chlebowski's house. When Chlebowski moved to France, Gérôme introduced him to the French artistic circles, offered him advice and suggested themes for his work. Their relationship was interrupted by Chlebowski's disease and his return to Poland. The last note of this friendship was the short story by Léontine de Nittis, published in 1892.

  18. Shakespeare for all Seasons ? Richard II en Avignon : de Jean Vilar (1957 à Ariane Mnouchkine (1982 Shakespeare for All Seasons? Richard II at the Avignon Festival: from Jean Vilar (1957 to Ariane Mnouchkine (1982

    Directory of Open Access Journals (Sweden)

    Isabelle Schwartz-Gastine

    2009-06-01

    Full Text Available Richard II has not often been performed on the French stage; however, in the 20th century, within a period of 35 years, two productions premiered at the same venue (the Cour d’Honneur at the open-air Avignon Festival, were so successful that they became emblematic of their times. In 1947 Jean Vilar opened the first Avignon Festival with an ascetic, charismatic eponymous hero who came to an inner knowledge of himself in his bare prison cell; in 1982 Ariane Mnouchkine offered a splendid visual display by transposing the play into the kabuki tradition; this offered the audience breath-taking and dynamic tableaux of elaborate court ceremonies and rebellious lords.At such a distance in time, the English medieval code of honour was dealt with according to completely different theatrical principles of ethics and aesthetics, mirroring the changes in perspective within French society.

  19. Hydrogen Filling Station

    Energy Technology Data Exchange (ETDEWEB)

    Boehm, Robert F; Sabacky, Bruce; Anderson II, Everett B; Haberman, David; Al-Hassin, Mowafak; He, Xiaoming; Morriseau, Brian

    2010-02-24

    Hydrogen is an environmentally attractive transportation fuel that has the potential to displace fossil fuels. The Freedom CAR and Freedom FUEL initiatives emphasize the importance of hydrogen as a future transportation fuel. Presently, Las Vegas has one hydrogen fueling station powered by natural gas. However, the use of traditional sources of energy to produce hydrogen does not maximize the benefit. The hydrogen fueling station developed under this grant used electrolysis units and solar energy to produce hydrogen fuel. Water and electricity are furnished to the unit and the output is hydrogen and oxygen. Three vehicles were converted to utilize the hydrogen produced at the station. The vehicles were all equipped with different types of technologies. The vehicles were used in the day-to-day operation of the Las Vegas Valley Water District and monitoring was performed on efficiency, reliability and maintenance requirements. The research and demonstration utilized for the reconfiguration of these vehicles could lead to new technologies in vehicle development that could make hydrogen-fueled vehicles more cost effective, economical, efficient and more widely used. In order to advance the development of a hydrogen future in Southern Nevada, project partners recognized a need to bring various entities involved in hydrogen development and deployment together as a means of sharing knowledge and eliminating duplication of efforts. A road-mapping session was held in Las Vegas in June 2006. The Nevada State Energy Office, representatives from DOE, DOE contractors and LANL, NETL, NREL were present. Leadership from the National hydrogen Association Board of Directors also attended. As a result of this session, a roadmap for hydrogen development was created. This roadmap has the ability to become a tool for use by other road-mapping efforts in the hydrogen community. It could also become a standard template for other states or even countries to approach planning for a hydrogen

  20. Analysis of hydrogen content and distribution in hydrogen storage alloys using neutron radiography

    International Nuclear Information System (INIS)

    Sakaguchi, Hiroki; Hatakeyama, Keisuke; Satake, Yuichi; Esaka, Takao; Fujine, Shigenori; Yoneda, Kenji; Kanda, Keiji

    2000-01-01

    Small amounts of hydrogen in hydrogen storage alloys, such as Mg 2 Ni, were detected using neutron radiography (NRG). Hydrogen concentrations in a hydrogenated solid solution were determined by this technique. Furthermore, we were able to obtain NRG images for an initial stage of hydrogen absorption in the hydrogen storage alloys. NRG would be a new measurement method to clarify the behavior of hydrogen in hydrogen storage alloys. (author)

  1. Liquid-phase chemical hydrogen storage: catalytic hydrogen generation under ambient conditions.

    Science.gov (United States)

    Jiang, Hai-Long; Singh, Sanjay Kumar; Yan, Jun-Min; Zhang, Xin-Bo; Xu, Qiang

    2010-05-25

    There is a demand for a sufficient and sustainable energy supply. Hence, the search for applicable hydrogen storage materials is extremely important owing to the diversified merits of hydrogen energy. Lithium and sodium borohydride, ammonia borane, hydrazine, and formic acid have been extensively investigated as promising hydrogen storage materials based on their relatively high hydrogen content. Significant advances, such as hydrogen generation temperatures and reaction kinetics, have been made in the catalytic hydrolysis of aqueous lithium and sodium borohydride and ammonia borane as well as in the catalytic decomposition of hydrous hydrazine and formic acid. In this Minireview we briefly survey the research progresses in catalytic hydrogen generation from these liquid-phase chemical hydrogen storage materials.

  2. Process for exchanging hydrogen isotopes between gaseous hydrogen and water

    International Nuclear Information System (INIS)

    Hindin, S.G.; Roberts, G.W.

    1977-01-01

    A process is described for exchanging isotopes (particularly tritium) between water and gaseous hydrogen. Isotope depleted gaseous hydrogen and water containing a hydrogen isotope are introduced into the vapour phase in a first reaction area. The steam and gaseous hydrogen are brought into contact with a supported metal catalyst in this area in a parallel flow at a temperature range of around 225 and 300 0 C. An effluent flow comprising a mixture of isotope enriched gaseous hydrogen and depleted steam is evacuated from this area and the steam condensed into liquid water [fr

  3. Hydrogen energy applications

    International Nuclear Information System (INIS)

    Okken, P.A.

    1992-10-01

    For the Energy and Material consumption Scenarios (EMS), by which emission reduction of CO 2 and other greenhouse gases can be calculated, calculations are executed by means of the MARKAL model (MARket ALlocation, a process-oriented dynamic linear programming model to minimize the costs of the energy system) for the Netherlands energy economy in the period 2000-2040, using a variable CO 2 emission limit. The results of these calculations are published in a separate report (ECN-C--92-066). The use of hydrogen can play an important part in the above-mentioned period. An overview of several options to produce or use hydrogen is given and added to the MARKAL model. In this report techno-economical data and estimates were compiled for several H 2 -application options, which subsequently also are added to the MARKAL model. After a brief chapter on hydrogen and the impact on the reduction of CO 2 emission attention is paid to stationary and mobile applications. The stationary options concern the mixing of natural gas with 10% hydrogen, a 100% substitution of natural gas by hydrogen, the use of a direct steam generator (combustion of hydrogen by means of pure oxygen, followed by steam injection to produce steam), and the use of fuel cells. The mobile options concern the use of hydrogen in the transportation sector. In brief, attention is paid to a hydrogen passenger car with an Otto engine, and a hydrogen passenger car with a fuel cell, a hybrid (metal)-hydride car, a hydrogen truck, a truck with a methanol fuel cell, a hydrogen bus, an inland canal boat with a hydrogen fuel cell, and finally a hydrogen airplane. 2 figs., 15 tabs., 1 app., 26 refs

  4. In memoriam:Jean Blancou, DVM, 1936-2010. World authority on rabies, historian and former Director General of the World Organisation for Animal Health (Office International des Épizooties: OIE

    Directory of Open Access Journals (Sweden)

    Anon.

    2011-01-01

    Full Text Available Chevalier de la Légion d’honneurChevalier de l’Ordre national du mérite agricoleCommandeur de l’Ordre national du mérite agricoleCorresponding member of the Argentinean Academy of Agronomy and Veterinary Medicine Docteur honoris causa, Liege University (Belgium Foreign member of the Royal Belgian Academy of Agriculture Foreign member of the Russian Academy of Agronomic Sciences Honorary Director General of the OIEHonorary Member of the British Veterinary AssociationMédaille d’honneur, CNEVAMember and previous President of the French Veterinary Academy Member of the Academy of Sciences of Overseas TerritoriesPrix Trasbot, Académie vétérinaire de France, 1980Vice President of the Société française d’histoire de la médecine et des sciences vétérinairese Jean-Marie Blancou was born in Bangui on 28 August 1936 and passed away in Paris on 10 November 2010 at the age of 74. After studying at the Pierre de Fermat Lycée in Toulouse, Jean Blancou graduated from the Toulouse Veterinary School in 1960. He continued his studies in tropical veterinary medicine in Paris until 1963, extending his knowledge of immunology, microbiology, biochemistry and zoology, at the Institut Pasteur. He obtained his doctorate in biological sciences at the University of Nancy in 1982.Jean Blancou commenced his career as technical adviser to the Veterinary Services of Ethiopia where he directed a campaign against rinderpest in the south of the county. From 1965 to 1967 he was deputy director of the national veterinary laboratory in Niamey where he was responsible for the diagnosis of animal diseases and the production of veterinary vaccines.In 1967, he moved to the central livestock laboratory in Madagascar, where he commenced research on the diagnosis and control of dermatophilosis, bovine tuberculosis and other bacterial and parasitic diseases.In August 1968 he married Geneviève Orue.In 1975 he was appointed as head of the national veterinary

  5. Hydrogen millennium

    International Nuclear Information System (INIS)

    Bose, T.K.; Benard, P.

    2000-05-01

    The 10th Canadian Hydrogen Conference was held at the Hilton Hotel in Quebec City from May 28 to May 31, 2000. The topics discussed included current drivers for the hydrogen economy, the international response to these drivers, new initiatives, sustainable as well as biological and hydrocarbon-derived production of hydrogen, defense applications of fuel cells, hydrogen storage on metal hydrides and carbon nanostructures, stationary power and remote application, micro-fuel cells and portable applications, marketing aspects, fuel cell modeling, materials, safety, fuel cell vehicles and residential applications. (author)

  6. Modification of hydrogen determinator for total hydrogen analysis in irradiated zircaloy cladding tube

    International Nuclear Information System (INIS)

    Park, Soon Dal; Choi, Kwnag Soon; Kim, Jong Goo; Joe, Kih Soo; Kim, Won Ho

    1999-01-01

    A hydrogen determinator was modified and installed in the glove box to analyse total hydrogen content in irradiated zircaloy tube. The analysis method of hydrogen is Inert Gas Fusion(IGF)-Thermal Conductivity Detection(TCD). The hydrogen recoveries of no tin method using Ti and Zr matrix standards, respectively, were available within 3 μg of hydrogen. Also the smaller size of sample showed the better hydrogen recovery. It was found that the hydrogen standard of Ti matrix is available to hydrogen analysis in zircaloy sample. The mean radioactivity of irradiated zircaloy sample was 10 mR/hr and hydrogen concentration was 130 ppm

  7. Hydrogen exchange

    DEFF Research Database (Denmark)

    Jensen, Pernille Foged; Rand, Kasper Dyrberg

    2016-01-01

    Hydrogen exchange (HX) monitored by mass spectrometry (MS) is a powerful analytical method for investigation of protein conformation and dynamics. HX-MS monitors isotopic exchange of hydrogen in protein backbone amides and thus serves as a sensitive method for probing protein conformation...... and dynamics along the entire protein backbone. This chapter describes the exchange of backbone amide hydrogen which is highly quenchable as it is strongly dependent on the pH and temperature. The HX rates of backbone amide hydrogen are sensitive and very useful probes of protein conformation......, as they are distributed along the polypeptide backbone and form the fundamental hydrogen-bonding networks of basic secondary structure. The effect of pressure on HX in unstructured polypeptides (poly-dl-lysine and oxidatively unfolded ribonuclease A) and native folded proteins (lysozyme and ribonuclease A) was evaluated...

  8. Hydrogen energy systems studies

    Energy Technology Data Exchange (ETDEWEB)

    Ogden, J.M.; Kreutz, T.G.; Steinbugler, M. [Princeton Univ., NJ (United States)] [and others

    1996-10-01

    In this report the authors describe results from technical and economic assessments carried out during the past year with support from the USDOE Hydrogen R&D Program. (1) Assessment of technologies for small scale production of hydrogen from natural gas. Because of the cost and logistics of transporting and storing hydrogen, it may be preferable to produce hydrogen at the point of use from more readily available energy carriers such as natural gas or electricity. In this task the authors assess near term technologies for producing hydrogen from natural gas at small scale including steam reforming, partial oxidation and autothermal reforming. (2) Case study of developing a hydrogen vehicle refueling infrastructure in Southern California. Many analysts suggest that the first widespread use of hydrogen energy is likely to be in zero emission vehicles in Southern California. Several hundred thousand zero emission automobiles are projected for the Los Angeles Basin alone by 2010, if mandated levels are implemented. Assuming that hydrogen vehicles capture a significant fraction of this market, a large demand for hydrogen fuel could evolve over the next few decades. Refueling a large number of hydrogen vehicles poses significant challenges. In this task the authors assess near term options for producing and delivering gaseous hydrogen transportation fuel to users in Southern California including: (1) hydrogen produced from natural gas in a large, centralized steam reforming plant, and delivered to refueling stations via liquid hydrogen truck or small scale hydrogen gas pipeline, (2) hydrogen produced at the refueling station via small scale steam reforming of natural gas, (3) hydrogen produced via small scale electrolysis at the refueling station, and (4) hydrogen from low cost chemical industry sources (e.g. excess capacity in refineries which have recently upgraded their hydrogen production capacity, etc.).

  9. Questioning hydrogen

    International Nuclear Information System (INIS)

    Hammerschlag, Roel; Mazza, Patrick

    2005-01-01

    As an energy carrier, hydrogen is to be compared to electricity, the only widespread and viable alternative. When hydrogen is used to transmit renewable electricity, only 51% can reach the end user due to losses in electrolysis, hydrogen compression, and the fuel cell. In contrast, conventional electric storage technologies allow between 75% and 85% of the original electricity to be delivered. Even when hydrogen is extracted from gasified coal (with carbon sequestration) or from water cracked in high-temperature nuclear reactors, more of the primary energy reaches the end user if a conventional electric process is used instead. Hydrogen performs no better in mobile applications, where electric vehicles that are far closer to commercialization exceed fuel cell vehicles in efficiency, cost and performance. New, carbon-neutral energy can prevent twice the quantity of GHG's by displacing fossil electricity than it can by powering fuel cell vehicles. The same is true for new, natural gas energy. New energy resources should be used to displace high-GHG electric generation, not to manufacture hydrogen

  10. Hydrogen in oxygen-free, phosphorus-doped copper-Charging techniques, hydrogen contents and modelling of hydrogen diffusion and depth profile

    International Nuclear Information System (INIS)

    Martinsson, Aasa; Sandstroem, Rolf; Lilja, Christina

    2013-01-01

    In Sweden spent nuclear fuel is planned to be disposed of by encapsulating in cast iron inserts protected by a copper shell. The copper can be exposed to hydrogen released during corrosion processes in the inserts. If the hydrogen is taken up by the copper, it could lead to hydrogen embrittlement. Specimens from oxygen-free copper have been hydrogen charged using two different methods. The purpose was to investigate how hydrogen could be introduced into copper in a controlled way. The thermal charging method resulted in a reduction of the initial hydrogen content. After electrochemical charging of cylindrical specimens, the measured hydrogen content was 2.6 wt. ppm which should compared with 0.6 wt. ppm before charging. The retained hydrogen after two weeks was reduced by nearly 40%. Recently the paper 'Hydrogen depth profile in phosphorus-doped, oxygen-free copper after cathodic charging' (Martinsson and Sandstrom, 2012) has been published. The paper describes experimental results for bulk specimens as well as presenting a model. Almost all the hydrogen is found to be located less than 100 μm from the surface. This model is used to interpret the experimental results on foils in the present report. Since the model is fully based on fundamental equations, it can be used to analyse what happens in new situations. In this report the effect of the charging intensity, the grain size, the critical nucleus size for hydrogen bubble formation as well as the charging time are analysed

  11. Hydrogen in oxygen-free, phosphorus-doped copper - Charging techniques, hydrogen contents and modelling of hydrogen diffusion and depth profile

    Energy Technology Data Exchange (ETDEWEB)

    Martinsson, Aasa [Swerea KIMAB, Kista (Sweden); Sandstroem, Rolf [Swerea KIMAB, Kista (Sweden); Div. of Materials Science and Engineering, KTH Royal Institute of Technology, Stockholm (Sweden); Lilja, Christina [Swedish Nuclear Fuel and Waste Management Co., Stockholm (Sweden)

    2013-01-15

    In Sweden spent nuclear fuel is planned to be disposed of by encapsulating in cast iron inserts protected by a copper shell. The copper can be exposed to hydrogen released during corrosion processes in the inserts. If the hydrogen is taken up by the copper, it could lead to hydrogen embrittlement. Specimens from oxygen-free copper have been hydrogen charged using two different methods. The purpose was to investigate how hydrogen could be introduced into copper in a controlled way. The thermal charging method resulted in a reduction of the initial hydrogen content. After electrochemical charging of cylindrical specimens, the measured hydrogen content was 2.6 wt. ppm which should compared with 0.6 wt. ppm before charging. The retained hydrogen after two weeks was reduced by nearly 40%. Recently the paper 'Hydrogen depth profile in phosphorus-doped, oxygen-free copper after cathodic charging' (Martinsson and Sandstrom, 2012) has been published. The paper describes experimental results for bulk specimens as well as presenting a model. Almost all the hydrogen is found to be located less than 100 {mu}m from the surface. This model is used to interpret the experimental results on foils in the present report. Since the model is fully based on fundamental equations, it can be used to analyse what happens in new situations. In this report the effect of the charging intensity, the grain size, the critical nucleus size for hydrogen bubble formation as well as the charging time are analysed.

  12. Hydrogen at the Rooftop: Compact CPV-Hydrogen system to Convert Sunlight to Hydrogen

    KAUST Repository

    Burhan, Muhammad

    2017-12-27

    Despite being highest potential energy source, solar intermittency and low power density make it difficult for solar energy to compete with the conventional power plants. Highly efficient concentrated photovoltaic (CPV) system provides best technology to be paired with the electrolytic hydrogen production, as a sustainable energy source with long term energy storage. However, the conventional gigantic design of CPV system limits its market and application to the open desert fields without any rooftop installation scope, unlike conventional PV. This makes CPV less popular among solar energy customers. This paper discusses the development of compact CPV-Hydrogen system for the rooftop application in the urban region. The in-house built compact CPV system works with hybrid solar tracking of 0.1° accuracy, ensured through proposed double lens collimator based solar tracking sensor. With PEM based electrolyser, the compact CPV-hydrogen system showed 28% CPV efficiency and 18% sunlight to hydrogen (STH) efficiency, for rooftop operation in tropical region of Singapore. For plant designers, the solar to hydrogen production rating of 217 kWh/kg has been presented with 15% STH daily average efficiency, recorded from the long term field operation of the system.

  13. Hydrogen at the Rooftop: Compact CPV-Hydrogen system to Convert Sunlight to Hydrogen

    KAUST Repository

    Burhan, Muhammad; Wakil Shahzad, Muhammad; Ng, Kim Choon

    2017-01-01

    Despite being highest potential energy source, solar intermittency and low power density make it difficult for solar energy to compete with the conventional power plants. Highly efficient concentrated photovoltaic (CPV) system provides best technology to be paired with the electrolytic hydrogen production, as a sustainable energy source with long term energy storage. However, the conventional gigantic design of CPV system limits its market and application to the open desert fields without any rooftop installation scope, unlike conventional PV. This makes CPV less popular among solar energy customers. This paper discusses the development of compact CPV-Hydrogen system for the rooftop application in the urban region. The in-house built compact CPV system works with hybrid solar tracking of 0.1° accuracy, ensured through proposed double lens collimator based solar tracking sensor. With PEM based electrolyser, the compact CPV-hydrogen system showed 28% CPV efficiency and 18% sunlight to hydrogen (STH) efficiency, for rooftop operation in tropical region of Singapore. For plant designers, the solar to hydrogen production rating of 217 kWh/kg has been presented with 15% STH daily average efficiency, recorded from the long term field operation of the system.

  14. Trapping and detrapping of hydrogen in graphite materials exposed to hydrogen gas

    International Nuclear Information System (INIS)

    Atsumi, Hisao; Iseki, Michio; Shikama, Tatsuo.

    1994-01-01

    Measurements of hydrogen solubility have been performed for several unirradiated and neutron-irradiated graphite (and CFC) samples at temperatures between 973 and 1323 K under a ∼10 kPa hydrogen atmosphere. The hydrogen dissolution process has been studied and it is discussed here. The values of hydrogen solubility vary substantially among the samples up to about a factor of 16. A strong correlation has been observed between the values of hydrogen solubility and the degrees of graphitization determined by X-ray diffraction technique. The relation can be extended even for the neutron irradiated samples. Hydrogen dissolution into graphite can be explained with the trapping of hydrogen at defect sites (e.g. dangling carbon bonds) considering an equilibrium reaction between hydrogen molecules and the trapping sites. The migration of hydrogen in graphite is speculated to result from a sequence of detrapping and retrapping events with high energy activation processes. (author)

  15. Technical files. Hydrogen memento; Fiches techniques. Memento de l'hydrogene

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2002-07-01

    This document is a compilation of 30 technical files about hydrogen and its related technologies. These files cover the following aspects: general considerations (world energy consumption growth, contribution of developing countries, atmospheric pollution and greenhouse effect, health impacts, actions implemented at the world scale, role of hydrogen); glossary and acronyms; units used and conversions; world energy situation (primary production, sectoral consumption, demand trends, environmental impact, situation of fossil fuel reserves); French energy situation (primary sources, energy independence ratio, electric power status, evolutions and trends of the French energy demand); fuel cells; basic data on hydrogen (thermodynamic properties and data); hydrogen production by water electrolysis, application to small capacity systems; thermochemical water dissociation; water photo-electrolysis; hydrogen pipeline networks in the world; mechanical energy production; hydrogen thermal engines; aeronautic applications; research laboratories; industrial actors of the hydrogen sector (companies, activities, geographical situation, financial structure, strategy, R and D, cooperations, projects etc..); hydrogen flammability and explosiveness; transport and storage safety; standards and regulations about hydrogen safety in France, in Europe and in the rest of the world; hydrogen programs in the world; the programs financed by the European Union; the German programs; the programs in Island, France and UK; the programs in North America; the Japanese programs; table of the main recent R and D projects per type of program; light vehicles with fuel cells; the Daimler-Chrysler program. (J.S.)

  16. Process for exchanging hydrogen isotopes between gaseous hydrogen and water

    International Nuclear Information System (INIS)

    Hindin, S. G.; Roberts, G. W.

    1980-01-01

    A process for exchanging isotopes of hydrogen, particularly tritium, between gaseous hydrogen and water is provided whereby gaseous hydrogen depeleted in tritium and liquid or gaseous water containing tritium are reacted in the presence of a metallic catalyst

  17. BIG hydrogen: hydrogen technology in the oil and gas sector

    International Nuclear Information System (INIS)

    2006-01-01

    The BIG Hydrogen workshop was held in Calgary, Alberta, Canada on February 13, 2006. About 60 representatives of industry, academia and government attended this one-day technical meeting on hydrogen production for the oil and gas industry. The following themes were identified from the presentations and discussion: the need to find a BIG hydrogen replacement for Steam Methane Reformer (SMR) because of uncertainty regarding cost and availability of natural gas, although given the maturity of SMR process (reliability, known capital cost) how high will H2 prices have to rise?; need for a national strategy to link the near-term and the longer-term hydrogen production requirements, which can take hydrogen from chemical feedstock to energy carrier; and in the near-term Canada should get involved in demonstrations and build expertise in large hydrogen systems including production and carbon capture and sequestration

  18. Florida Hydrogen Initiative

    Energy Technology Data Exchange (ETDEWEB)

    Block, David L

    2013-06-30

    The Florida Hydrogen Initiative (FHI) was a research, development and demonstration hydrogen and fuel cell program. The FHI program objectives were to develop Florida?s hydrogen and fuel cell infrastructure and to assist DOE in its hydrogen and fuel cell activities The FHI program funded 12 RD&D projects as follows: Hydrogen Refueling Infrastructure and Rental Car Strategies -- L. Lines, Rollins College This project analyzes strategies for Florida's early stage adaptation of hydrogen-powered public transportation. In particular, the report investigates urban and statewide network of refueling stations and the feasibility of establishing a hydrogen rental-car fleet based in Orlando. Methanol Fuel Cell Vehicle Charging Station at Florida Atlantic University ? M. Fuchs, EnerFuel, Inc. The project objectives were to design, and demonstrate a 10 kWnet proton exchange membrane fuel cell stationary power plant operating on methanol, to achieve an electrical energy efficiency of 32% and to demonstrate transient response time of less than 3 milliseconds. Assessment of Public Understanding of the Hydrogen Economy Through Science Center Exhibits, J. Newman, Orlando Science Center The project objective was to design and build an interactive Science Center exhibit called: ?H2Now: the Great Hydrogen Xchange?. On-site Reformation of Diesel Fuel for Hydrogen Fueling Station Applications ? A. Raissi, Florida Solar Energy Center This project developed an on-demand forecourt hydrogen production technology by catalytically converting high-sulfur hydrocarbon fuels to an essentially sulfur-free gas. The removal of sulfur from reformate is critical since most catalysts used for the steam reformation have limited sulfur tolerance. Chemochromic Hydrogen Leak Detectors for Safety Monitoring ? N. Mohajeri and N. Muradov, Florida Solar Energy Center This project developed and demonstrated a cost-effective and highly selective chemochromic (visual) hydrogen leak detector for safety

  19. New efficient hydrogen process production from organosilane hydrogen carriers derivatives

    Energy Technology Data Exchange (ETDEWEB)

    Brunel, Jean Michel [Unite URMITE, UMR 6236 CNRS, Faculte de Medecine et de Pharmacie, Universite de la Mediterranee, 27 boulevard Jean Moulin, 13385 Marseille 05 (France)

    2010-04-15

    While the source of hydrogen constitutes a significant scientific challenge, addressing issues of hydrogen storage, transport, and delivery is equally important. None of the current hydrogen storage options, liquefied or high pressure H{sub 2} gas, metal hydrides, etc.. satisfy criteria of size, costs, kinetics, and safety for use in transportation. In this context, we have discovered a methodology for the production of hydrogen on demand, in high yield, under kinetic control, from organosilane hydrogen carriers derivatives and methanol as co-reagent under mild conditions catalyzed by a cheap ammonium fluoride salt. Finally, the silicon by-products can be efficiently recycle leading to an environmentally friendly source of energy. (author)

  20. Weighing the galactic disc using the Jeans equation: lessons from simulations

    Science.gov (United States)

    Candlish, G. N.; Smith, R.; Moni Bidin, C.; Gibson, B. K.

    2016-03-01

    Using three-dimensional stellar kinematic data from simulated galaxies, we examine the efficacy of a Jeans equation analysis in reconstructing the total disk surface density, including the dark matter, at the `Solar' radius. Our simulation data set includes galaxies formed in a cosmological context using state-of-the-art high-resolution cosmological zoom simulations, and other idealized models. The cosmologically formed galaxies have been demonstrated to lie on many of the observed scaling relations for late-type spirals, and thus offer an interesting surrogate for real galaxies with the obvious advantage that all the kinematical data are known perfectly. We show that the vertical velocity dispersion is typically the dominant kinematic quantity in the analysis, and that the traditional method of using only the vertical force is reasonably effective at low heights above the disk plane. At higher heights the inclusion of the radial force becomes increasingly important. We also show that the method is sensitive to uncertainties in the measured disk parameters, particularly the scalelengths of the assumed double exponential density distribution, and the scalelength of the radial velocity dispersion. In addition, we show that disk structure and low number statistics can lead to significant errors in the calculated surface densities. Finally, we examine the implications of our results for previous studies of this sort, suggesting that more accurate measurements of the scalelengths may help reconcile conflicting estimates of the local dark matter density in the literature.

  1. Effect of hydrogen coverage on hydrogenation of o-cresol on Pt(111)

    Science.gov (United States)

    Li, Yaping; Liu, Zhimin; Crossley, Steven P.; Jentoft, Friederike C.; Wang, Sanwu

    2018-06-01

    The conversion of phenolics over metal catalysts is an important process for upgrading biofuels. With density functional calculations, hydrogenation of o-cresol on the hydrogen-covered Pt(111) surface was investigated. The results show that the coverage of hydrogen plays a significant role in the reaction rate while it does not affect the reaction selectivity. The reaction barriers of the hydrogenation process leading to the formation of both 2-methyl-cyclohexanone (the intermediate product) and 2-methyl-cyclohexanol (the final product) at high H coverages (∼1 ML) are found to be smaller by 0.14-0.69 eV than those at lower H coverages (∼1/25 ML). After both hydrogen and cresol are adsorbed on Pt(111) from their initial gas phase state, the reaction energy of each hydrogenation step on the surface is also dependent on the hydrogen coverage. On the H-covered Pt(111) surface, most steps of hydrogenation involve exothermic reactions when the hydrogen coverage is high while they are endothermic reactions at low hydrogen coverages. The differences in reaction rate and reaction energy between high and low H coverages can be understood with the coverage-dependent bonding strength and configurations.

  2. Hydrogen distribution in a containment with a high-velocity hydrogen-steam source

    International Nuclear Information System (INIS)

    Bloom, G.R.; Muhlestein, L.D.; Postma, A.K.; Claybrook, S.W.

    1982-09-01

    Hydrogen mixing and distribution tests are reported for a modeled high velocity hydrogen-steam release from a postulated small pipe break or release from a pressurizer relief tank rupture disk into the lower compartment of an Ice Condenser Plant. The tests, which in most cases used helium as a simulant for hydrogen, demonstrated that the lower compartment gas was well mixed for both hydrogen release conditions used. The gas concentration differences between any spatial locations were less than 3 volume percent during the hydrogen/steam release period and were reduced to less than 0.5 volume percent within 20 minutes after termination of the hydrogen source. The high velocity hydrogen/steam jet provided the dominant mixing mechanism; however, natural convection and forced air recirculation played important roles in providing a well mixed atmosphere following termination of the hydrogen source. 5 figures, 4 tables

  3. Jean-Baptiste Comby, La Question climatique. Genèse et dépolitisation d’un problème public (Raisons d’Agir, 2015)

    OpenAIRE

    Tasset, Cyprien

    2016-01-01

    Une sociologie de la dépolitisation du changement climatique La radicalité climatique Comment se fait-il que la question du réchauffement climatique, qui est portée à l’attention publique dans les démocraties occidentales depuis de nombreuses années maintenant, n’ait pas abouti à des changements politiques proportionnés à l’extrême gravité que lui prêtent les scientifiques ? Dans La Question climatique, issu d’une thèse en information-communication soutenue en 2008, Jean-Baptiste Comby propos...

  4. Novel developments in hydrogen storage, hydrogen activation and ionic liquids

    Energy Technology Data Exchange (ETDEWEB)

    Doroodian, Amir

    2010-12-03

    This dissertation is divided into three chapters. Recently, metal-free hydrogen activation using phosphorous compounds has been reported in science magazine. We have investigated the interaction between hydrogen and phosphorous compounds in presence of strong Lewis acids (chapter one). A new generation of metal-free hydrogen activation, using amines and strong Lewis acids with sterically demanding nature, was already developed in our group. Shortage of high storage capacity using large substitution to improve sterical effect led us to explore the amine borane derivatives, which are explained in chapter two. Due to the high storage capacity of hydrogen in aminoborane derivatives, we have explored these materials to extend hydrogen release. These compounds store hydrogen as proton and hydride on adjacent atoms or ions. These investigations resulted in developing hydrogen storage based on ionic liquids containing methyl guanidinium cation. Then we have continued to develop ionic liquids based on methyl guanidinium cation with different anions, such as tetrafluoro borate (chapter three). We have replaced these anions with transition metal anions to investigate hydrogen bonding and catalytic activity of ionic liquids. This chapter illustrates the world of ionic liquid as a green solvent for organic, inorganic and catalytic reactions and combines the concept of catalysts and solvents based on ionic liquids. The catalytic activity is investigated particularly with respect to the interaction with CO{sub 2}. (orig.)

  5. Unusual hydrogen bonding in L-cysteine hydrogen fluoride.

    Science.gov (United States)

    Minkov, V S; Ghazaryan, V V; Boldyreva, E V; Petrosyan, A M

    2015-08-01

    L-Cysteine hydrogen fluoride, or bis(L-cysteinium) difluoride-L-cysteine-hydrogen fluoride (1/1/1), 2C3H8NO2S(+)·2F(-)·C3H7NO2S·HF or L-Cys(+)(L-Cys···L-Cys(+))F(-)(F(-)...H-F), provides the first example of a structure with cations of the 'triglycine sulfate' type, i.e. A(+)(A···A(+)) (where A and A(+) are the zwitterionic and cationic states of an amino acid, respectively), without a doubly charged counter-ion. The salt crystallizes in the monoclinic system with the space group P2(1). The dimeric (L-Cys···L-Cys(+)) cation and the dimeric (F(-)···H-F) anion are formed via strong O-H···O or F-H···F hydrogen bonds, respectively, with very short O···O [2.4438 (19) Å] and F···F distances [2.2676 (17) Å]. The F···F distance is significantly shorter than in solid hydrogen fluoride. Additionally, there is another very short hydrogen bond, of O-H···F type, formed by a L-cysteinium cation and a fluoride ion. The corresponding O···F distance of 2.3412 (19) Å seems to be the shortest among O-H···F and F-H···O hydrogen bonds known to date. The single-crystal X-ray diffraction study was complemented by IR spectroscopy. Of special interest was the spectral region of vibrations related to the above-mentioned hydrogen bonds.

  6. Hydrogen production using Rhodopseudomonas palustris WP 3-5 with hydrogen fermentation reactor effluent

    International Nuclear Information System (INIS)

    Chi-Mei Lee; Kuo-Tsang Hung

    2006-01-01

    The possibility of utilizing the dark hydrogen fermentation stage effluents for photo hydrogen production using purple non-sulfur bacteria should be elucidated. In the previous experiments, Rhodopseudomonas palustris WP3-5 was proven to efficiently produce hydrogen from the effluent of hydrogen fermentation reactors. The highest hydrogen production rate was obtained at a HRT value of 48 h when feeding a 5 fold effluent dilution from anaerobic hydrogen fermentation. Besides, hydrogen production occurred only when the NH 4 + concentration was below 17 mg-NH 4 + /l. Therefore, for successful fermentation effluent utilization, the most important things were to decrease the optimal HRT, increase the optimal substrate concentration and increase the tolerable ammonia concentration. In this study, a lab-scale serial photo-bioreactor was constructed. The reactor overall hydrogen production efficiency with synthetic wastewater exhibiting an organic acid profile identical to that of anaerobic hydrogen fermentation reactor effluent and with effluent from two anaerobic hydrogen fermentation reactors was evaluated. (authors)

  7. BOOK REVIEW: Jean-Charles Houzeau et son temps

    Science.gov (United States)

    Sterken, C.; Verhas, P.

    2002-12-01

    This is a wonderful book. It describes the life and work of Belgian astronomer Jean-Charles Houzeau (1820-1888) and, as the last three words of the title indicate, it has a broader focus including the social, industrial and scientific context of the second part of the 19th century. This is set in a very broad international social context including social revolutions in Belgium and France, and the abolition of slavery in the United States. The biography clearly shows that this hard-working man was driven by science and justice, by individualism and generosity, by humor and sentiment. The book is divided in four parts, each part is placed in its own historical context. The first part "The apprentice, the master and his disciples" describes Houzeau's childhood and young years, his early scientific career at the Observatory in Brussels, and his relationship with Adolphe Quetelet. The evolution of this relationship is very well documented: the turbulent revolutionary Houzeau versus cool, moderated and diplomatic royalist Quetelet, the observer versus the mathematician theorist. But both were very dedicated teachers: Quetelet established public courses and after the Revolution of 1830 he contributed to the foundation of the University of Brussels; Houzeau was the peripatetic teacher wherever place he was, also after his return to Belgium. The second part is "The politician" and deals with Houzeau's political ideas and revolutionary attitudes and their consequences. His revolutionary ideas, though, were not confined to politics only: he also severely criticised the paucity of high-precision observations collected at the Royal Observatory in his days. Because he participated at revolutionary meetings, Houzeau was fired from his position at the Observatory by the Minister of Interior Affairs Charles Rogier. Thus started his peripathetic life, covering observational work in astronomy, geography, geodesy and natural sciences in many places in Belgium and abroad. The third

  8. Metal hydrides for hydrogen storage in nickel hydrogen batteries

    International Nuclear Information System (INIS)

    Bittner, H.F.; Badcock, C.C.; Quinzio, M.V.

    1984-01-01

    Metal hydride hydrogen storage in nickel hydrogen (Ni/H 2 ) batteries has been shown to increase battery energy density and improve battery heat management capabilities. However the properties of metal hydrides in a Ni/H 2 battery environment, which contains water vapor and oxygen in addition to the hydrogen, have not been well characterized. This work evaluates the use of hydrides in Ni/H 2 batteries by fundamental characterization of metal hydride properties in a Ni/H 2 cell environment. Hydrogen sorption properties of various hydrides have been measured in a Ni/H 2 cell environment. Results of detailed thermodynamic and kinetic studies of hydrogen sorption in LaNi 5 in a Ni/H 2 cell environment are presented. Long-term cycling studies indicate that degradation of the hydride can be minimized by cycling between certain pressure limits. A model describing the mechanism of hydride degradation is presented

  9. Jean-François Gallotte, Joëlle Malberg, Carbone 14 le film, Les Mutins de Pangée

    OpenAIRE

    Curien, Julie

    2014-01-01

    Carbone 14 le film est un témoignage sur le mouvement des radios libres, à travers l'exemple de « Carbone 14 », « la radio active » devenue « la radio qui vous encule par les oreilles ». Filmé en 4 jours à la rentrée 1982, avec du matériel volé, le film ovni de Jean-François Galotte et Joëlle Malberg est sélectionné au Festival de Cannes en 1983. Il fait un tollé qui retombe comme une crêpe, aux oubliettes : on n'en parle plus avant... 2011, trente ans après la création de la radio culte et c...

  10. Hydrogen, energy of the future?

    International Nuclear Information System (INIS)

    Alleau, Th.

    2007-01-01

    A cheap, non-polluting energy with no greenhouse gas emissions and unlimited resources? This is towards this fantastic future that this book brings us, analyzing the complex but promising question of hydrogen. The scientific and technical aspects of production, transport, storage and distribution raised by hydrogen are thoroughly reviewed. Content: I) Energy, which solutions?: 1 - hydrogen, a future; 2 - hydrogen, a foreseeable solution?; II) Hydrogen, an energy vector: 3 - characteristics of hydrogen (physical data, quality and drawbacks); 4 - hydrogen production (from fossil fuels, from water, from biomass, bio-hydrogen generation); 5 - transport, storage and distribution of hydrogen; 6 - hydrogen cost (production, storage, transport and distribution costs); III) Fuel cells and ITER, utopias?: 7 - molecular hydrogen uses (thermal engines and fuel cells); 8 - hydrogen and fusion (hydrogen isotopes, thermonuclear reaction, ITER project, fusion and wastes); IV) Hydrogen acceptability: 9 - risk acceptability; 10 - standards and regulations; 11 - national, European and international policies about hydrogen; 12 - big demonstration projects in France and in the rest of the world; conclusion. (J.S.)

  11. A new type of hydrogen generator-HHEG (high-compressed hydrogen energy generator)

    International Nuclear Information System (INIS)

    Harada, H.; Tojima, K.; Takeda, M.; Nakazawa, T.

    2004-01-01

    'Full text:' We have developed a new type of hydrogen generator named HHEG (High-compressed Hydrogen Energy Generator). HHEG can produce 35 MPa high-compressed hydrogen for fuel cell vehicle without any mechanical compressor. HHEG is a kind of PEM(proton exchange membrane)electrolysis. It was well known that compressed hydrogen could be generated by water electrolysis. However, the conventional electrolysis could not generate 35 MPa or higher pressure that is required for fuel cell vehicle, because electrolysis cell stack is destroyed in such high pressure. In HHEG, the cell stack is put in high-pressure vessel and the pressure difference of oxygen and hydrogen that is generated by the cell stack is always kept at nearly zero by an automatic compensator invented by Mitsubishi Corporation. The cell stack of HHEG is not so special one, but it is not broken under such high pressure, because the automatic compensator always offsets the force acting on the cell stack. Hydrogen for fuel cell vehicle must be produce by no emission energy such as solar and atomic power. These energies are available as electricity. So, water electrolysis is the only way of producing hydrogen fuel. Hydrogen fuel is also 35 MPa high-compressed hydrogen and will become 70 MPa in near future. But conventional mechanical compressor is not useful for such high pressure hydrogen fuel, because of the short lifetime and high power consumption. Construction of hydrogen station network is indispensable in order to come into wide use of fuel cell vehicles. For such network contraction, an on-site type hydrogen generator is required. HHEG can satisfy above these requirements. So we can conclude that HHEG is the only way of realizing the hydrogen economy. (author)

  12. Effect of composition on diffusible hydrogen content and hydrogen assisted cracking of steel welds

    International Nuclear Information System (INIS)

    Albert, S.K.; Ramasubbu, V.; Bhaduri, A.K.; Parvathavarthini, N.

    2008-01-01

    Study of hydrogen assisted cracking and measurement of diffusible hydrogen content in different Cr-Mo steel welds showed that for identical conditions, susceptibility to cracking increased and diffusible hydrogen content decreased with increase in alloy content. Hydrogen permeation studies showed that hydrogen diffusivity decreases and solubility increases with increase in alloy content. Thus decrease in diffusible hydrogen content with increase in alloying is attributed to increase in apparent solubility and decrease in apparent diffusivity of hydrogen with increase in alloy content. Analysis of the results indicates that variation of diffusible hydrogen content and apparent diffusivity of hydrogen with alloy content can be represented as a function of alloy composition. (author)

  13. Hubert Damisch / Jean Dubuffet - Entrée en matière: correspondance 1961-1985, textes 1961-2014: édition établie, présentée et annotée

    NARCIS (Netherlands)

    Berrebi, S.

    2016-01-01

    French artist Jean Dubuffet and French art historian Hubert Damisch shared a long friendship between 1961—the year Damisch published his first essay on Dubuffet—and 1985—when the latter died. "Entrée en matière" gathers together all the texts written by Damisch on Dubuffet as well as a selection of

  14. New hydrogen technologies

    International Nuclear Information System (INIS)

    1992-01-01

    This report presents an overview of the overall hydrogen system. There are separate sections for production, distribution, transport, storage; and applications of hydrogen. The most important methods for hydrogen production are steam reformation of natural gas and electrolysis of water. Of the renewable energy options, production of hydrogen by electrolysis using electricity from wind turbines or by gasification of biomass were found to be the most economic for Finland. Direct use of this electricity or the production of liquid fuels from biomass will be competing alternatives. When hydrogen is produced in the solar belt or where there is cheap hydropower it must be transported over long distances. The overall energy consumed for the transport is from 25 to 40 % of the initial available energy. Hydrogen storage can be divided into stationary and mobile types. The most economic, stationary, large scale hydrogen storage for both long and short periods is underground storage. When suitable sites are not available, then pressure vessels are the best for short period and liquid H 2 for long period. Vehicle storage of hydrogen is by either metal hydrides or liquid H 2 . Hydrogen is a very versatile energy carrier. It can be used to produce heat directly in catalytic burners without flame, to produce electricity in fuel cells with high efficiency for use in vehicles or for peak power shaving, as a fuel component with conventional fuels to reduce emissions, as a way to store energy and as a chemical reagent in reactions

  15. Hydrogen production by Cyanobacteria

    Directory of Open Access Journals (Sweden)

    Chaudhuri Surabhi

    2005-12-01

    Full Text Available Abstract The limited fossil fuel prompts the prospecting of various unconventional energy sources to take over the traditional fossil fuel energy source. In this respect the use of hydrogen gas is an attractive alternate source. Attributed by its numerous advantages including those of environmentally clean, efficiency and renew ability, hydrogen gas is considered to be one of the most desired alternate. Cyanobacteria are highly promising microorganism for hydrogen production. In comparison to the traditional ways of hydrogen production (chemical, photoelectrical, Cyanobacterial hydrogen production is commercially viable. This review highlights the basic biology of cynobacterial hydrogen production, strains involved, large-scale hydrogen production and its future prospects. While integrating the existing knowledge and technology, much future improvement and progress is to be done before hydrogen is accepted as a commercial primary energy source.

  16. Hydrogen Fuelling Stations

    DEFF Research Database (Denmark)

    Rothuizen, Erasmus Damgaard

    . A system consisting of one high pressure storage tank is used to investigate the thermodynamics of fuelling a hydrogen vehicle. The results show that the decisive parameter for how the fuelling proceeds is the pressure loss in the vehicle. The single tank fuelling system is compared to a cascade fuelling......This thesis concerns hydrogen fuelling stations from an overall system perspective. The study investigates thermodynamics and energy consumption of hydrogen fuelling stations for fuelling vehicles for personal transportation. For the study a library concerning the components in a hydrogen fuelling...... station has been developed in Dymola. The models include the fuelling protocol (J2601) for hydrogen vehicles made by Society of Automotive Engineers (SAE) and the thermodynamic property library CoolProp is used for retrieving state point. The components in the hydrogen fuelling library are building up...

  17. Liquid hydrogen properties

    International Nuclear Information System (INIS)

    Choi, Jung Woon; Kim, Y. J.; Lee, K. H.; Kim, H. I.; Han, K. Y.; Park, J.H.

    2004-03-01

    The purpose of this report is to provide the input data, whose characteristic is thermodynamic and transport, in the form of equation for the thermo-hydraulic calculations using hydrogen as a working substance. The considered data in this report are particularly focused on the properties of para-hydrogen and of equilibrium-hydrogen around the working temperature range of the HANARO-CNS. The discussed properties of hydrogen are, in turn, the pressure of saturated vapors, the density, the heat of vaporization, thermal conductivity, viscosity, and heat capacity. Several equations to fit the above-mentioned experimental data allow calculating the various properties of liquid hydrogen with high accuracy at all considered temperatures

  18. Dynamics of hydrogen in hydrogenated amorphous silicon

    Indian Academy of Sciences (India)

    is mobile and can easily move through the material). Hydrogen diffuses ... The determination of the relationship of light-enhanced hydrogen motion to ... term is negligible, and using the thermodynamic relation given below f(c) = kBT .... device-applications problematic but the normal state can be recovered by a thermal an-.

  19. Muonium/muonic hydrogen formation in atomic hydrogen

    Indian Academy of Sciences (India)

    The muonium/muonic hydrogen atom formation in ± –H collisions is investigated, using a two-state approximation in a time dependent formalism. It is found that muonium cross-section results are similar to the cross-section results obtained for positronium formation in + –H collision. Muonic hydrogen atom formation ...

  20. On the solubility of hydrogen in the systems titanium-aluminium-hydrogen, titanium-vanadium-hydrogen and titanium-aluminium-vanadium-hydrogen in the temperature region of 800 to 1,0000C at hydrogen pressures of 0.1 to 400 mm.Hg

    International Nuclear Information System (INIS)

    Kauder, G.W.

    1973-01-01

    The hydrogen concentrations on Ti-Al, Ti-V and Ti-Al-V alloys were determined in the temperature region from 800 to 1,000 0 C and at hydrogen pressures of 0.1 to 400 mm.Hg using a gravimetric measuring process. The thus obtained results allowed the drawing of hydrogen activity slopes in the titanium rich corner of the systems titanium-hydrogen, titanium-aluminium-hydrogen, titanium-vanadium-hydrogen and such for the technical titanium alloys Ti-6Al-4V and Ti-6Al-6V. In spite of the antagonistic effects of the elements aluminium and vanadium on the stabilization of the α and β phase regions of titanium, a hydrogen-activity-increasing effect was always found in which the aluminium influence was greater than that of vanadium. Breaks occured in the hydrogen activity curves and phase boundaries, and phase regions were determined over their positions. Isothermal phase diagrams for the titanium-rich corner of the system titanium-aluminium-hydrogen at 800, 850 and 900 0 C and for the titanium-rich corner of the titanium-vanadium-hydrogen system at 900, 950 and 1,000 0 C were drawn up from the hydrogen activity curves. (orig./LH) [de

  1. Industrial implications of hydrogen

    International Nuclear Information System (INIS)

    Pressouyre, G.M.

    1982-01-01

    Two major industrial implications of hydrogen are examined: problems related to the effect of hydrogen on materials properties (hydrogen embrittlement), and problems related to the use and production of hydrogen as a future energy vector [fr

  2. Biomimetic hydrogen production

    Energy Technology Data Exchange (ETDEWEB)

    Krassen, Henning

    2009-05-15

    Hydrogenases catalyze the reduction of protons to molecular hydrogen with outstanding efficiency. An electrode surface which is covered with active hydrogenase molecules becomes a promising alternative to platinum for electrochemical hydrogen production. To immobilize the hydrogenase on the electrode, the gold surface was modified by heterobifunctional molecules. A thiol headgroup on one side allowed the binding to the gold surface and the formation of a self-assembled monolayer. The other side of the molecules provided a surface with a high affinity for the hydrogenase CrHydA1 from Chlamydomonas reinhardtii. With methylviologen as a soluble energy carrier, electrons were transferred from carboxy-terminated electrodes to CrHydA1 and conducted to the active site (H-cluster), where they reduce protons to molecular hydrogen. A combined approach of surface-enhanced infrared absorption spectroscopy, gas chromatography, and surface plasmon resonance allowed quantifying the hydrogen production on a molecular level. Hydrogen was produced with a rate of 85 mol H{sub 2} min{sup -1} mol{sup -1}. On a 1'- benzyl-4,4'-bipyridinum (BBP)-terminated surface, the electrons were mediated by the monolayer and no soluble electron carrier was necessary to achieve a comparable hydrogen production rate (approximately 50% of the former system). The hydrogen evolution potential was determined to be -335 mV for the BBP-bound hydrogenase and -290 mV for the hydrogenase which was immobilized on a carboxy-terminated mercaptopropionic acid SAM. Therefore, both systems significantly reduce the hydrogen production overpotential and allow electrochemical hydrogen production at an energy level which is close to the commercially applied platinum electrodes (hydrogen evolution potential of -270 mV). In order to couple hydrogen production and photosynthesis, photosystem I (PS1) from Synechocystis PCC 6803 and membrane-bound hydrogenase (MBH) from Ralstonia eutropha were bound to each other

  3. 30 July 2012 - Prime Minister of France, Mr. Jean-Marc Ayrault, visits CERN

    CERN Multimedia

    Maximillien Brice

    2012-01-01

    Ligne d'accueil: Directeur général, R. Heuer présente: Directeur S. Myers, Chef des Relations internationales F. Pauss et Chefs de Département P. Bloch et A.-S. Catherin ; Représentants du CEA et du CNRS des 4 experiences LHC : J.-L. Faure, L. Fayard, C. Guyot, M.-H. Schune, Y. Schutz, Y. Sirois, Protocole CERN S. Molinari. Les autorités locales saluent le Premier ministre: M. Christophe Bouvier, maire de Cessy, M. Rachel Mazuir, sénateur de l'Ain, président du CG01, M. Etienne Blanc, député de l'Ain, maire de Divonne les Bains, et Mme Yvette Brachet, conseillère régionale représentant M. Jean-Jack Queyranne, président du CR Rhône Alpes. CERN-GE-1207163 32: dans le tunnel du LHC au Point 5: R. Garoby, Chef adjoint du département Faisceaux P. Lebrunm, Attaché à la Direction P. Bloch, Chef du département Physique J. Bertrand, (représente Alain Fuchs),CNRS Y. Sirois, Collaboration CMS, Responsable pour la France, Directeur de Recherche au CNRS, LLR Ecole Polytechnique J.-Y. Le Deaut, Dépu...

  4. Ultrafine hydrogen storage powders

    Science.gov (United States)

    Anderson, Iver E.; Ellis, Timothy W.; Pecharsky, Vitalij K.; Ting, Jason; Terpstra, Robert; Bowman, Robert C.; Witham, Charles K.; Fultz, Brent T.; Bugga, Ratnakumar V.

    2000-06-13

    A method of making hydrogen storage powder resistant to fracture in service involves forming a melt having the appropriate composition for the hydrogen storage material, such, for example, LaNi.sub.5 and other AB.sub.5 type materials and AB.sub.5+x materials, where x is from about -2.5 to about +2.5, including x=0, and the melt is gas atomized under conditions of melt temperature and atomizing gas pressure to form generally spherical powder particles. The hydrogen storage powder exhibits improved chemcial homogeneity as a result of rapid solidfication from the melt and small particle size that is more resistant to microcracking during hydrogen absorption/desorption cycling. A hydrogen storage component, such as an electrode for a battery or electrochemical fuel cell, made from the gas atomized hydrogen storage material is resistant to hydrogen degradation upon hydrogen absorption/desorption that occurs for example, during charging/discharging of a battery. Such hydrogen storage components can be made by consolidating and optionally sintering the gas atomized hydrogen storage powder or alternately by shaping the gas atomized powder and a suitable binder to a desired configuration in a mold or die.

  5. Canadian hydrogen safety program

    International Nuclear Information System (INIS)

    MacIntyre, I.; Tchouvelev, A.V.; Hay, D.R.; Wong, J.; Grant, J.; Benard, P.

    2007-01-01

    The Canadian hydrogen safety program (CHSP) is a project initiative of the Codes and Standards Working Group of the Canadian transportation fuel cell alliance (CTFCA) that represents industry, academia, government, and regulators. The Program rationale, structure and contents contribute to acceptance of the products, services and systems of the Canadian Hydrogen Industry into the Canadian hydrogen stakeholder community. It facilitates trade through fair insurance policies and rates, effective and efficient regulatory approval procedures and accommodation of the interests of the general public. The Program integrates a consistent quantitative risk assessment methodology with experimental (destructive and non-destructive) failure rates and consequence-of-release data for key hydrogen components and systems into risk assessment of commercial application scenarios. Its current and past six projects include Intelligent Virtual Hydrogen Filling Station (IVHFS), Hydrogen clearance distances, comparative quantitative risk comparison of hydrogen and compressed natural gas (CNG) refuelling options; computational fluid dynamics (CFD) modeling validation, calibration and enhancement; enhancement of frequency and probability analysis, and Consequence analysis of key component failures of hydrogen systems; and fuel cell oxidant outlet hydrogen sensor project. The Program projects are tightly linked with the content of the International Energy Agency (IEA) Task 19 Hydrogen Safety. (author)

  6. The energy carrier hydrogen

    International Nuclear Information System (INIS)

    Anon.

    1992-01-01

    The potential of hydrogen to be used as a clean fuel for the production of heat and power, as well as for the propulsion of aeroplanes and vehicles, is described, in particular for Germany. First, attention is paid to the application of hydrogen as a basic material for the (petro)chemical industry, as an indirect energy source for (petro)chemical processes, and as a direct energy source for several purposes. Than the importance of hydrogen as an energy carrier in a large-scale application of renewable energy sources is discussed. Next an overview is given of new and old hydrogen production techniques from fossil fuels, biomass, or the electrolysis of water. Energetic applications of hydrogen in the transportation sector and the production of electric power and heat are mentioned. Brief descriptions are given of techniques to store hydrogen safely. Finally attention is paid to hydrogen research in Germany. Two hydrogen projects, in which Germany participates, are briefly dealt with: the Euro-Quebec project (production of hydrogen by means of hydropower), and the HYSOLAR project (hydrogen production by means of solar energy). 18 figs., 1 tab., 7 refs

  7. Nanodiamond for hydrogen storage: temperature-dependent hydrogenation and charge-induced dehydrogenation.

    Science.gov (United States)

    Lai, Lin; Barnard, Amanda S

    2012-02-21

    Carbon-based hydrogen storage materials are one of hottest research topics in materials science. Although the majority of studies focus on highly porous loosely bound systems, these systems have various limitations including use at elevated temperature. Here we propose, based on computer simulations, that diamond nanoparticles may provide a new promising high temperature candidate with a moderate storage capacity, but good potential for recyclability. The hydrogenation of nanodiamonds is found to be easily achieved, in agreement with experiments, though we find the stability of hydrogenation is dependent on the morphology of nanodiamonds and surrounding environment. Hydrogenation is thermodynamically favourable even at high temperature in pure hydrogen, ammonia, and methane gas reservoirs, whereas water vapour can help to reduce the energy barrier for desorption. The greatest challenge in using this material is the breaking of the strong covalent C-H bonds, and we have identified that the spontaneous release of atomic hydrogen may be achieved through charging of hydrogenated nanodiamonds. If the degree of induced charge is properly controlled, the integrity of the host nanodiamond is maintained, which indicates that an efficient and recyclable approach for hydrogen release may be possible. This journal is © The Royal Society of Chemistry 2012

  8. Jean Rouch e a invenção do Outro no documentário

    Directory of Open Access Journals (Sweden)

    Marcius Freire

    2007-12-01

    Full Text Available In 1954, Jean Rouch, who at the time was studying the migrationsystem in West Africa, invited three Nigerian friends - Lam, Illo and Damouré - to undertake an excursion up to the Gold Cost (presently Gana the same way as thousand of young men did during the drought months. Rouch filmed that experience, mixing documentary with fiction, thereby introducing a whole new element in the relation movie maker/observed citizens. In fact, until then thesesubjects were under the gaze of the camera and urged to show aspects of their reality in the most natural possible way. In contrast, in Jaguar, the film resulting from the afore mentioned experience, Rouch shows subjects who constructed themselves through the fílmic record and act upon a likewise constructed reality. In this way, he sought an "induced-truth", an expression he used to define the procedure through which the freedom he gave to the characters to create orto create themselves could lead to the truth of the film. The aim of this article is to reflect on this procedure and its unfolding in the field of contemporary documentary.

  9. La Maison Standar de Jean Prouvé en Meudon. Edificio, fachadas y paneles verticales

    Directory of Open Access Journals (Sweden)

    Laura Armesto Pineda

    2014-10-01

    Full Text Available En 1949 el ministro francés Eugène Claudius Petit visitó los talleres de Jean Prouvé en Maxeville. Acto seguido, el Ministerio de Reconstrucción y Urbanismo (M.R.U. encargó a Prouvé la planificación y desarrollo de una serie de casas de construcción ligera para la producción en serie, cuyo precio no debía superar el de una casa sencilla de la periferia construida de forma tradicional. El ministerio se comprometió a comprar 25 casas de este tipo y con ellas demostrar que la construcción ligera podía ser un procedimiento rápido y económico para poner fin a la escasez de viviendas en el periodo de posguerra. Finalmente, solo 14 de esas casas fueron construidas en Meudon, a las afueras de París. Su proyecto innovador, y el compromiso y dedicación de su autor, convirtieron a estas construcciones en un referente de la prefabricación aplicada al diseño y en verdaderas obras de arte que hoy día todavía pueden ser admiradas.

  10. Hydrogen-metal systems

    International Nuclear Information System (INIS)

    Wenzl, H.; Springer, T.

    1976-01-01

    A survey is given on the alloys of metal crystals with hydrogen. The system niobium-hydrogen and its properties are especially dealt with: diffusion and heat of solution of hydrogen in the host crystal, phase diagram, coherent and incoherent phase separation, application of metal-hydrogen systems in technology. Furthermore, examples from research work in IFF (Institut fuer Festkoerperforschung) of the Nuclear Research Plant, Juelich, in the field of metal-H systems are given in summary form. (GSC) [de

  11. Electric arc hydrogen heaters

    International Nuclear Information System (INIS)

    Zasypin, I.M.

    2000-01-01

    The experimental data on the electric arc burning in hydrogen are presented. Empirical and semiempirical dependences for calculating the arc characteristics are derived. An engineering method of calculating plasma torches for hydrogen heating is proposed. A model of interaction of a hydrogen arc with a gas flow is outlined. The characteristics of plasma torches for heating hydrogen and hydrogen-bearing gases are described. (author)

  12. Investigation of hydrogen bubbles behavior in tungsten by high-flux hydrogen implantation

    Science.gov (United States)

    Zhao, Jiangtao; Meng, Xuan; Guan, Xingcai; Wang, Qiang; Fang, Kaihong; Xu, Xiaohui; Lu, Yongkai; Gao, Jun; Liu, Zhenlin; Wang, Tieshan

    2018-05-01

    Hydrogen isotopes retention and bubbles formation are critical issues for tungsten as plasma-facing material in future fusion reactors. In this work, the formation and growing up behavior of hydrogen bubbles in tungsten were investigated experimentally. The planar TEM samples were implanted by 6.0keV hydrogens to a fluence of 3.38 ×1018 H ṡ cm-2 at room temperature, and well-defined hydrogen bubbles were observed by TEM. It was demonstrated that hydrogen bubbles formed when exposed to a fluence of 1.5 ×1018 H ṡ cm-2 , and the hydrogen bubbles grew up with the implantation fluence. In addition, the bubbles' size appeared larger with higher beam flux until saturated at a certain flux, even though the total fluence was kept the same. Finally, in order to understand the thermal annealing effect on the bubbles behavior, hydrogen-implanted samples were annealed at 400, 600, 800, and 1000 °C for 3 h. It was obvious that hydrogen bubbles' morphology changed at temperatures higher than 800 °C.

  13. Liquid hydrogen in Japan

    Energy Technology Data Exchange (ETDEWEB)

    Yasumi, S. [Iwatani Corp., Osaka (Japan). Dept. of Overseas Business Development

    2009-07-01

    Japan's Iwatani Corporation has focused its attention on hydrogen as the ultimate energy source in future. Unlike the United States, hydrogen use and delivery in liquid form is extremely limited in the European Union and in Japan. Iwatani Corporation broke through industry stereotypes by creating and building Hydro Edge Co. Ltd., Japan's largest liquid hydrogen plant. It was established in 2006 as a joint venture between Iwatani and Kansai Electric Power Group in Osaka. Hydro Edge is Japan's first combined liquid hydrogen and ASU plant, and is fully operational. Liquid oxygen, liquid nitrogen and liquid argon are separated from air using the cryogenic energy of liquefied natural gas fuel that is used for power generation. Liquid hydrogen is produced efficiently and simultaneously using liquid nitrogen. Approximately 12 times as much hydrogen in liquid form can be transported and supplied as pressurized hydrogen gas. This technology is a significant step forward in the dissemination and expansion of hydrogen in a hydrogen-based economy.

  14. Hydrogen as automotive fuel

    International Nuclear Information System (INIS)

    Dini, D.; Ciancia, A.; Pede, G.; Sglavo, V.; ENEA, Rome

    1992-01-01

    An assessment of the technical/economic feasibility of the use of hydrogen as an automotive fuel is made based on analyses of the following: the chemical- physical properties of hydrogen in relation to its use in internal combustion engines; the modifications necessary to adapt internal combustion engines to hydrogen use; hydrogen fuel injection systems - with water vapour injection, cryogenic injection, and the low or high pressure injection of hydrogen directly into the combustion chamber; the current commercialization status of hydrogen automotive fuels; energy efficiency ratings; environmental impacts; in-vehicle storage systems - involving the use of hydrides, high pressure systems and liquid hydrogen storage systems; performance in terms of pay-load ratio; autonomous operation; and operating costs. The paper concludes that, considering current costs for hydrogen fuel production, distribution and use, at present, the employment of hydrogen fuelled vehicles is feasible only in highly polluted urban environments where the innovative vehicle's air pollution abatement characteristics would justify its high operating costs as compared with those of conventional automotive alternatives

  15. Nuclear electrolytic hydrogen

    International Nuclear Information System (INIS)

    Barnstaple, A.G.; Petrella, A.J.

    1982-05-01

    An extensive study of hydrogen supply has recently been carried out by Ontario Hydro which indicates that electrolytic hydrogen produced from nuclear electricity could offer the lowest cost option for any future large scale hydrogen supply in the Province of Ontario, Canada. This paper provides a synopsis of the Ontario Hydro study, a brief overview of the economic factors supporting the study conclusion and discussion of a number of issues concerning the supply of electrolytic hydrogen by electric power utilities

  16. Limits for hydrogen production of a solar - hydrogen system in Cuernavaca, Mexico

    International Nuclear Information System (INIS)

    Arriaga, H.L.G.; Gutierrez, S.L.; Cano, U.

    2006-01-01

    In this work experimental data are used in order to estimate the production of hydrogen as a function of irradiance of a direct-interconnection of solar panel system with a SPE (Solid Polymer Electrolyte) electrolyzer (also Solar-Hydrogen system). The solar - hydrogen system, consists of a photovoltaic solar array of 36 panels (75 Watts each) of monocrystalline silicon interconnected with an electrolyzer stack of 25 cells (around 100 cm 2 of geometrical area) with a maximum hydrogen production of 1 Nm 3 /h. By the use of voltage, current density, energy consumption values of the whole solar-hydrogen system, an average efficiency up to 5% was estimated and an average of 3,800 NL of hydrogen per day can be expected. Also the maximum hydrogen production for the months of July and December (sunniest and least sunny months in the location) is predicted. (authors)

  17. Limits for hydrogen production of a solar - hydrogen system in Cuernavaca, Mexico

    Energy Technology Data Exchange (ETDEWEB)

    Arriaga, H.L.G.; Gutierrez, S.L.; Cano, U. [Instituto de Investigaciones Electricas Av. Reforma 113, col. Palmira c.p.62490 Cuernavaca Morelos (Mexico)

    2006-07-01

    In this work experimental data are used in order to estimate the production of hydrogen as a function of irradiance of a direct-interconnection of solar panel system with a SPE (Solid Polymer Electrolyte) electrolyzer (also Solar-Hydrogen system). The solar - hydrogen system, consists of a photovoltaic solar array of 36 panels (75 Watts each) of monocrystalline silicon interconnected with an electrolyzer stack of 25 cells (around 100 cm{sup 2} of geometrical area) with a maximum hydrogen production of 1 Nm{sup 3}/h. By the use of voltage, current density, energy consumption values of the whole solar-hydrogen system, an average efficiency up to 5% was estimated and an average of 3,800 NL of hydrogen per day can be expected. Also the maximum hydrogen production for the months of July and December (sunniest and least sunny months in the location) is predicted. (authors)

  18. Temperature, salinity, nutrients, oxygen, chlorophyll and other measurements found in dataset SISMER taken from the VAUBAN, JEAN CHARCOT (FNOY) and other platforms in the South Pacific, Coastal North Atlantic and other locations from 1983 to 2007 (NODC Accession 0046621)

    Data.gov (United States)

    National Oceanic and Atmospheric Administration, Department of Commerce — Temperature, salinity, nutrients, oxygen, chlorophyll and other measurements found in CTD and OSD datasets taken from the VAUBAN, JEAN CHARCOT (FNOY) and other...

  19. Simulation of hydrogen and hydrogen-assisted propane ignition in Pt catalyzed microchannel

    Energy Technology Data Exchange (ETDEWEB)

    Seshadri, Vikram; Kaisare, Niket S. [Department of Chemical Engineering, Indian Institute of Technology - Madras, Chennai 600 036 (India)

    2010-11-15

    This paper deals with self-ignition of catalytic microburners from ambient cold-start conditions. First, reaction kinetics for hydrogen combustion is validated with experimental results from the literature, followed by validation of a simplified pseudo-2D microburner model. The model is then used to study the self-ignition behavior of lean hydrogen/air mixtures in a Platinum-catalyzed microburner. Hydrogen combustion on Pt is a very fast reaction. During cold start ignition, hydrogen conversion reaches 100% within the first few seconds and the reactor dynamics are governed by the ''thermal inertia'' of the microburner wall structure. The self-ignition property of hydrogen can be used to provide the energy required for propane ignition. Two different modes of hydrogen-assisted propane ignition are considered: co-feed mode, where the microburner inlet consists of premixed hydrogen/propane/air mixtures; and sequential feed mode, where the inlet feed is switched from hydrogen/air to propane/air mixtures after the microburner reaches propane ignition temperature. We show that hydrogen-assisted ignition is equivalent to selectively preheating the inlet section of the microburner. The time to reach steady state is lower at higher equivalence ratio, lower wall thermal conductivity, and higher inlet velocity for both the ignition modes. The ignition times and propane emissions are compared. Although the sequential feed mode requires slightly higher amount of hydrogen, the propane emissions are at least an order of magnitude lower than the other ignition modes. (author)

  20. Metallic hydrogen research

    International Nuclear Information System (INIS)

    Burgess, T.J.; Hawke, R.S.

    1978-01-01

    Theoretical studies predict that molecular hydrogen can be converted to the metallic phase at very high density and pressure. These conditions were achieved by subjecting liquid hydrogen to isentropic compression in a magnetic-flux compression device. Hydrogen became electrically conducting at a density of about 1.06 g/cm 3 and a calculated pressure of about 2 Mbar. In the experimental device, a cylindrical liner, on implosion by high explosive, compresses a magnetic flux which in turn isentropically compresses a hydrogen sample; coaxial conical anvils prevent escape of the sample during compression. One anvil contains a coaxial cable that uses alumina ceramic as an insulator; this probe allows continuous measurement of the electrical conductivity of the hydrogen. A flash x-ray radiograph exposed during the experiment records the location of the sample-tube boundaries and permits calculation of the sample density. The theoretical underpinnings of the metallic transition of hydrogen are briefly summarized, and the experimental apparatus and technique, analytical methods, and results are described. 9 figures

  1. Numerical analysis on hydrogen stratification and post-inerting of hydrogen risk

    International Nuclear Information System (INIS)

    Peng, Cheng; Tong, Lili; Cao, Xuewu

    2016-01-01

    Highlights: • A three-dimensional computational model was built and the applicability was discussed. • The formation of helium stratification was further studied. • Three influencing factors on the post-inerting of hydrogen risk were analyzed. - Abstract: In the case of severe accidents, the risk of hydrogen explosion threatens the integrity of the nuclear reactor containment. According to nuclear regulations, hydrogen control is required to ensure the safe operation of the nuclear reactor. In this study, the method of Computational Fluid Dynamics (CFD) has been applied to analyze process of hydrogen stratification and the post-inerting of hydrogen risk in the Large-Scale Gas Mixing Facility. A three-dimensional computational model was built and the applicability of different turbulence models was discussed. The result shows that the helium concentration calculated by the standard k–ε turbulence model is closest to the experiment data. Through analyzing the formation of helium stratification at different injection velocities, it is found that when the injection mass flow is constant and the injection velocity of helium increases, the mixture of helium and air is enhanced while there is rarely influence on the formation of helium stratification. In addition, the influences of mass flow rate, injection location and direction and inert gas on the post-inerting of hydrogen risk have been analyzed and the results are as follows: with the increasing of mass flow rate, the mitigation effect of nitrogen on hydrogen risk will be further improved; there is an obvious local difference between the mitigation effects of nitrogen on hydrogen risk in different injection directions and locations; when the inert gas is injected at the same mass flow rate, the mitigation effect of steam on hydrogen risk is better than that of nitrogen. This study can provide technical support for the mitigation of hydrogen risk in the small LWR containment.

  2. Evaluation of hydrogen demonstration systems (Task 18 of IEA Implementing Agreement on Hydrogen)

    Energy Technology Data Exchange (ETDEWEB)

    Baker, J N; Carter, S

    2005-07-01

    Task 18 aims to gather information about the integration of hydrogen into society around the world. As part of subtask B (demonstration projects), EA Technology Limited collected information and data on specific UK hydrogen demonstration projects and case studies. The work involved desk research, a literature review, telephone conversations and meetings with developers and operators of hydrogen-related projects in the UK. Various examples were identified in phase 1 that were either proposed, planned, under construction, commissioned or operational. The main demonstration activities described in the report are: the Clean Urban Transport for Europe (CUTE) refuelling station at Hornchurch in Essex; the Hydrogen and Renewables Integration (HARI) project at West Beacon Farm, Leicestershire; the Promoting Unst Renewable Energy (PURE) project on Unst in the Shetland Isles; the Hunterston Hydrogen Project in North Ayrshire, Scotland; and the Tees Valley Hydrogen Project. The CUTE, HARI and PURE projects were selected for inclusion in the overall Task 18 workplan. The report also covers developments associated with the Fuel Cell House, the Hydrogen Office, INEOS Chlor, the London Hydrogen Partnership and the Wales Hydrogen Project.

  3. Hydrogen in amorphous silicon

    International Nuclear Information System (INIS)

    Peercy, P.S.

    1980-01-01

    The structural aspects of amorphous silicon and the role of hydrogen in this structure are reviewed with emphasis on ion implantation studies. In amorphous silicon produced by Si ion implantation of crystalline silicon, the material reconstructs into a metastable amorphous structure which has optical and electrical properties qualitatively similar to the corresponding properties in high-purity evaporated amorphous silicon. Hydrogen studies further indicate that these structures will accomodate less than or equal to 5 at.% hydrogen and this hydrogen is bonded predominantly in a monohydride (SiH 1 ) site. Larger hydrogen concentrations than this can be achieved under certain conditions, but the excess hydrogen may be attributed to defects and voids in the material. Similarly, glow discharge or sputter deposited amorphous silicon has more desirable electrical and optical properties when the material is prepared with low hydrogen concentration and monohydride bonding. Results of structural studies and hydrogen incorporation in amorphous silicon were discussed relative to the different models proposed for amorphous silicon

  4. Transient shielded liquid hydrogen containers

    International Nuclear Information System (INIS)

    Varghese, A.P.; Herring, R.H.

    1990-01-01

    The storage of hydrogen in the liquid phase has been limited in duration due to the thermal performance constraints of conventional Liquid Hydrogen containers available. Conventional Liquid Hydrogen containers lose hydrogen because of their relatively high heat leak and variations in usage pattern of hydrogen due to shutdowns. Local regulations also discourage venting of hydrogen. Long term storage of Liquid Hydrogen without product loss was usually accomplished using Liquid Nitrogen sacrificial shields. This paper reports on a new low heat leak container developed and patented that will extend the storage time of liquid hydrogen by five hundred percent. The principle of operation of the Transient Shields which makes the extraordinary performance of this container feasible is described in this paper. Also covered are the impact of this new container on present applications of hydrogen and the new opportunities afforded to Liquid hydrogen in the world hydrogen market

  5. Handheld hydrogen - a new concept for hydrogen storage

    DEFF Research Database (Denmark)

    Johannessen, Tue; Sørensen, Rasmus Zink

    2005-01-01

    A method of hydrogen storage using metal ammine complexes in combination with an ammonia decomposition catalyst is presented. This dense hydrogen storage material has high degree of safety compared to all the other available alternatives. This technology reduces the safety hazards of using liquid...

  6. On Jewish Being: Notes on Jean Améry

    Directory of Open Access Journals (Sweden)

    Andrew Benjamin

    2017-02-01

    Full Text Available That the question of identity takes on a sense of urgency, one with its own possibilities and impossibilities, the moment that identity is bound up with death, is hardy surprising. What follows are a series of reflections on the question of identity, Jewish identity, raised by Jean Améry’s remarkable text On the Necessity and Impossibility of Being a Jew (Über Zwang und Unmöglichkeit, Jude zu sein. Améry’s text was of course published in the wake of his own experiences as an active member of the resistance, as having been imprisoned in Auschwitz and as the victim of torture. Philosophically, rather than biographically, if there were a point of comparison, then it is to Levinas’s 1947 text Etre juif. Both pose the problem of how the question of Jewish identity, Jewish being, is to be understood in the wake of the Shoah. The meaning of the formulations - Jude zu sein, Jude sein, Etre juif, Jewish being – delimits the question to be addressed. This will be the case even if its point of address, namely what the question stages, is itself far from straightforward. Moreover, while what is demanded within that question is itself philosophically important, it is equally the case that the question of Jewish being is at work within both communities and synagogues across the Jewish world. As a consequence it is as much a philosophical question as it is one that has a structuring effect on how Jewish survival is conceived (and thus equally on what that survival is taken to be. How survival is understood is an issue that continues to exert its force. Who is the subject of survival? What is the subject of survival? Who or what has been subjected to the issue of survival? Survival is both more nuanced and complex than the brute fact of an afterlife. Jewish being as a present question – a question of the present - continues therefore.

  7. Hydrogen energy for beginners

    CERN Document Server

    2013-01-01

    This book highlights the outstanding role of hydrogen in energy processes, where it is the most functional element due to its unique peculiarities that are highlighted and emphasized in the book. The first half of the book covers the great natural hydrogen processes in biology, chemistry, and physics, showing that hydrogen is a trend that can unite all natural sciences. The second half of the book is devoted to the technological hydrogen processes that are under research and development with the aim to create the infrastructure for hydrogen energetics. The book describes the main features of hydrogen that make it inalienable player in processes such as fusion, photosynthesis, and metabolism. It also covers the methods of hydrogen production and storage, highlighting at the same time the exclusive importance of nanotechnologies in those processes.

  8. Reactivity of hydrogen contained in Raney nickel for ethylene hydrogenation studied by means of a tritium tracer

    International Nuclear Information System (INIS)

    Miyatani, Daisaku; Takeuchi, Toyosaburo.

    1979-01-01

    Reactivity of hydrogen contained in Raney nickel with ethylene was studied by using a tritium tracer. Hydrogen in Raney nickel was previously labeled with tritium and distinguished from hydrogen introduced during the hydrogenation reaction. The reactivity of the contained hydrogen was determined by measurement of the radioactivity of ethane produced in the hydrogenation. Ethylene reacted with hydrogen in Raney nickel for no supply of hydrogen during the hydrogenation. However, when ethylene was hydrogenated by both hydrogen in Raney nickel and introduced hydrogen, over 99% of the ethylene reacted with the introduced hydrogen and hardly reacted with the contained hydrogen. (author)

  9. IEA Hydrogen Implementing Agreement: Three Decades of Collaborative Hydrogen R and D

    International Nuclear Information System (INIS)

    Nick Beck; Mary-Rose de Valladares

    2006-01-01

    Created in 1977 and now in its Second Generation of Hydrogen R, D and D, the International Energy Agency (IEA) Hydrogen Implementing Agreement (HIA) is the oldest, largest international collaboration on hydrogen Research, Development and Demonstration (RD and D). As a global resource for technical expertise in hydrogen R, D and D, the HIA has expanded worldwide opportunities for hydrogen by undertaking 21 annexes (or tasks) on hydrogen production, storage, analysis of integrated systems and related topics with its 19 member countries. Related topics include hydrogen safety, conversion, economics and markets. The majority of the HIA's R and D portfolio has focused on longer term, pre-competitive R, D and D issues. Of the 21 annexes undertaken by the HIA, 15 are now complete. The HIA is also committed to outreach in support of both its core R and D activities and related issues such as regulation and infrastructure. As ever, the HIA welcomes collaboration and liaison with interested groups in the public and private sectors. (authors)

  10. Hydrogen energy systems studies

    Energy Technology Data Exchange (ETDEWEB)

    Ogden, J.M.; Steinbugler, M.; Dennis, E. [Princeton Univ., NJ (United States)] [and others

    1995-09-01

    For several years, researchers at Princeton University`s Center for Energy and Environmental Studies have carried out technical and economic assessments of hydrogen energy systems. Initially, we focussed on the long term potential of renewable hydrogen. More recently we have explored how a transition to renewable hydrogen might begin. The goal of our current work is to identify promising strategies leading from near term hydrogen markets and technologies toward eventual large scale use of renewable hydrogen as an energy carrier. Our approach has been to assess the entire hydrogen energy system from production through end-use considering technical performance, economics, infrastructure and environmental issues. This work is part of the systems analysis activity of the DOE Hydrogen Program. In this paper we first summarize the results of three tasks which were completed during the past year under NREL Contract No. XR-11265-2: in Task 1, we carried out assessments of near term options for supplying hydrogen transportation fuel from natural gas; in Task 2, we assessed the feasibility of using the existing natural gas system with hydrogen and hydrogen blends; and in Task 3, we carried out a study of PEM fuel cells for residential cogeneration applications, a market which might have less stringent cost requirements than transportation. We then give preliminary results for two other tasks which are ongoing under DOE Contract No. DE-FG04-94AL85803: In Task 1 we are assessing the technical options for low cost small scale production of hydrogen from natural gas, considering (a) steam reforming, (b) partial oxidation and (c) autothermal reforming, and in Task 2 we are assessing potential markets for hydrogen in Southern California.

  11. The Phenomenological Challenge of Jean-Luc Marion’s Gift Theology

    Directory of Open Access Journals (Sweden)

    Alex Y. Tiempo

    2016-05-01

    Full Text Available The tendency in most prayers is to preempt an answer coming from God. Yet such predetermination often results to a short-sighted vision of God’s action. The mysterious dimension in this case is subsumed by man’s finite gaze of the divine. Man often “thinks” that what he asks for in prayer elicits an answer from God, in which case the latter has a “duty” to respond to the former. Thus, if man’s wish is not granted, he tends to doubt the existence of the divine. To counteract such tendency, this paper presents phenomenology as a possible explanation. First, it will analyze the problem through the Husserlian method of bracketing one’s biases or preconceived notions of God. The notion of intentionality is given as a probable cause of the usual tendency in prayers where man often “intends” according to how he perceives the divine. Next, it will apply Jean-Luc Marion’s reverse intentionality which considers that God initiates the dialog. Man’s role is simply to respond to such a call. This paper concludes that prayer or any acts attributed to God should be interpreted within the context of Marion’s reverse intentionality. The one thing that man needs to avoid is the tendency toward predetermination – that is, toward the thinking that man predetermines God’s answer. Intentionality could be a helpful guide in the phenomenological interpretation, but it is limited only to the act of bracketing previously held notions of God. It is precisely the difficulty in seeing the invisible that one needs, at most, a possible phenomenon that allows for the divine to reveal as a gift.

  12. Hydrogen as automotive fuel

    International Nuclear Information System (INIS)

    Ambrosini, G.; Ciancia, A.; Pede, G.; Brighigna, M.

    1993-01-01

    Hydrogen fueled vehicles may just be the answer to the air pollution problem in highly polluted urban environments where the innovative vehicle's air pollution abatement characteristics would justify its high operating costs as compared with those of conventional automotive alternatives. This paper examines the feasibility of hydrogen as an automotive fuel by analyzing the following aspects: the chemical-physical properties of hydrogen in relation to its use in internal combustion engines; the modifications necessary to adapt internal combustion engines to hydrogen use; hydrogen fuel injection systems; current production technologies and commercialization status of hydrogen automotive fuels; energy efficiency ratings; environmental impacts; in-vehicle storage systems - involving the use of hydrides, high pressure systems and liquid hydrogen storage systems; performance in terms of pay-load ratio; autonomous operation; and operating costs. With reference to recent trial results being obtained in the USA, an assessment is also made of the feasibility of the use of methane-hydrogen mixtures as automotive fuels. The paper concludes with a review of progress being made by ENEA (the Italian Agency for New Technology, Energy and the Environment) in the development of fuel storage and electronic fuel injection systems for hydrogen powered vehicles

  13. LIFTING THE DUSTY VEIL WITH NEAR- AND MID-INFRARED PHOTOMETRY. I. DESCRIPTION AND APPLICATIONS OF THE RAYLEIGH-JEANS COLOR EXCESS METHOD

    International Nuclear Information System (INIS)

    Majewski, Steven R.; Zasowski, Gail; Nidever, David L.

    2011-01-01

    The Milky Way (MW) remains a primary laboratory for understanding the structure and evolution of spiral galaxies, but typically we are denied clear views of MW stellar populations at low Galactic latitudes because of extinction by interstellar dust. However, the combination of Two Micron All-Sky Survey (2MASS) near-infrared (NIR) and Spitzer-IRAC mid-infrared (MIR) photometry enables a powerful method for determining the line-of-sight reddening to any star: the sampled wavelengths lie in the Rayleigh-Jeans part of the spectral energy distribution of most stars, where, to first order, all stars have essentially the same intrinsic color. Thus, changes in stellar NIR-MIR colors due to interstellar reddening are readily apparent, and (under an assumed extinction law) the observed colors and magnitudes of stars can be easily and accurately restored to their intrinsic values, greatly increasing their usefulness for Galactic structure studies. In this paper, we explore this 'Rayleigh-Jeans Color Excess' (RJCE) method and demonstrate that use of even a simple variant of the RJCE method based on a single reference color, (H -[4.5μ]), can rather accurately remove dust effects from previously uninterpretable 2MASS color-magnitude diagrams of stars in fields along the heavily reddened Galactic midplane, with results far superior to those derived from application of other dereddening methods. We also show that 'total' Galactic midplane extinction looks rather different from that predicted using 100μ emission maps from the IRAS/ISSA and COBE/DIRBE instruments as presented by Schlegel et al. Instead, the Galactic midplane extinction strongly resembles the distribution of 13 CO (J = 1→0) emission. Future papers will focus on refining the RJCE method and applying the technique to understand better not only dust and its distribution but also the distribution of stars intermixed with the dust in the low-latitude Galaxy.

  14. Hydrogen-based electrochemical energy storage

    Science.gov (United States)

    Simpson, Lin Jay

    2013-08-06

    An energy storage device (100) providing high storage densities via hydrogen storage. The device (100) includes a counter electrode (110), a storage electrode (130), and an ion conducting membrane (120) positioned between the counter electrode (110) and the storage electrode (130). The counter electrode (110) is formed of one or more materials with an affinity for hydrogen and includes an exchange matrix for elements/materials selected from the non-noble materials that have an affinity for hydrogen. The storage electrode (130) is loaded with hydrogen such as atomic or mono-hydrogen that is adsorbed by a hydrogen storage material such that the hydrogen (132, 134) may be stored with low chemical bonding. The hydrogen storage material is typically formed of a lightweight material such as carbon or boron with a network of passage-ways or intercalants for storing and conducting mono-hydrogen, protons, or the like. The hydrogen storage material may store at least ten percent by weight hydrogen (132, 134) at ambient temperature and pressure.

  15. LARGE-SCALE PRODUCTION OF HYDROGEN BY NUCLEAR ENERGY FOR THE HYDROGEN ECONOMY

    International Nuclear Information System (INIS)

    SCHULTZ, K.R.; BROWN, L.C.; BESENBRUCH, G.E.; HAMILTON, C.J.

    2003-01-01

    OAK B202 LARGE-SCALE PRODUCTION OF HYDROGEN BY NUCLEAR ENERGY FOR THE HYDROGEN ECONOMY. The ''Hydrogen Economy'' will reduce petroleum imports and greenhouse gas emissions. However, current commercial hydrogen production processes use fossil fuels and releases carbon dioxide. Hydrogen produced from nuclear energy could avoid these concerns. The authors have recently completed a three-year project for the US Department of Energy whose objective was to ''define an economically feasible concept for production of hydrogen, by nuclear means, using an advanced high-temperature nuclear reactor as the energy source''. Thermochemical water-splitting, a chemical process that accomplishes the decomposition of water into hydrogen and oxygen, met this objective. The goal of the first phase of this study was to evaluate thermochemical processes which offer the potential for efficient, cost-effective, large-scale production of hydrogen and to select one for further detailed consideration. The authors selected the Sulfur-Iodine cycle, In the second phase, they reviewed all the basic reactor types for suitability to provide the high temperature heat needed by the selected thermochemical water splitting cycle and chose the helium gas-cooled reactor. In the third phase they designed the chemical flowsheet for the thermochemical process and estimated the efficiency and cost of the process and the projected cost of producing hydrogen. These results are summarized in this paper

  16. Hydrogen gas detector

    International Nuclear Information System (INIS)

    Bohl, T.L.

    1982-01-01

    A differential thermocouple hydrogen gas detector has one thermocouple junction coated with an activated palladium or palladium-silver alloy catalytic material to allow heated hydrogen gas to react with the catalyst and raise the temperature of that junction. The other juction is covered with inert glass or epoxy resin, and does not experience a rise in temperature in the presence of hydrogen gas. A coil heater may be mounted around the thermocouple junctions to heat the hydrogen, or the gas may be passed through a heated block prior to exposing it to the thermocouples

  17. Sustainable hydrogen production

    Energy Technology Data Exchange (ETDEWEB)

    Block, D.L.; Linkous, C.; Muradov, N.

    1996-01-01

    This report describes the Sustainable Hydrogen Production research conducted at the Florida Solar Energy Center (FSEC) for the past year. The report presents the work done on the following four tasks: Task 1--production of hydrogen by photovoltaic-powered electrolysis; Task 2--solar photocatalytic hydrogen production from water using a dual-bed photosystem; Task 3--development of solid electrolytes for water electrolysis at intermediate temperatures; and Task 4--production of hydrogen by thermocatalytic cracking of natural gas. For each task, this report presents a summary, introduction/description of project, and results.

  18. Atomic hydrogen reactor

    International Nuclear Information System (INIS)

    Massip de Turville, C.M.D.

    1982-01-01

    Methods are discussed of generating heat in an atomic hydrogen reactor which involve; the production of atomic hydrogen by an electrical discharge, the capture of nascent neutrons from atomic hydrogen in a number of surrounding steel alloy tubes having a high manganese content to produce 56 Mn, the irradiation of atomic hydrogen by the high energy antineutrinos from the beta decay of 56 Mn to yield nascent neutrons, and the removal of the heat generated by the capture of nascent neutrons by 55 Mn and the beta decay of 56 Mn. (U.K.)

  19. Kicking the habit[Hydrogen fuel

    Energy Technology Data Exchange (ETDEWEB)

    Jones, N.; Lawton, G.; Pearce, F.

    2000-11-25

    This article focuses on the use of clean non-polluting hydrogen fuel as opposed to the use of fossil fuels which ties western nations to the Middle East. Details are given of Iceland's plans to use hydrogen fuelled buses, cars, trucks and trawlers, car manufacturers' options of using internal combustion engines burning hydrogen and hydrogen fuel cells, and the production of hydrogen using electrolysis of water and steam reforming of hydrocarbons. The 'Green Dream' of pollution-free hydrogen production, the use of solar energy for renewable hydrogen production in California, and problems associated with hydrogen storage are discussed.

  20. Hydrogen highway

    International Nuclear Information System (INIS)

    Anon

    2008-01-01

    The USA Administration would like to consider the US power generating industry as a basis ensuring both the full-scale production of hydrogen and the widespread use of the hydrogen related technological processes into the economy [ru

  1. High density hydrogen research

    International Nuclear Information System (INIS)

    Hawke, R.S.

    1977-01-01

    The interest in the properties of very dense hydrogen is prompted by its abundance in Saturn and Jupiter and its importance in laser fusion studies. Furthermore, it has been proposed that the metallic form of hydrogen may be a superconductor at relatively high temperatures and/or exist in a metastable phase at ambient pressure. For ten years or more, laboratories have been developing the techniques to study hydrogen in the megabar region (1 megabar = 100 GPa). Three major approaches to study dense hydrogen experimentally have been used, static presses, shockwave compression, and magnetic compression. Static tchniques have crossed the megabar threshold in stiff materials but have not yet been convincingly successful in very compressible hydrogen. Single and double shockwave techniques have improved the precision of the pressure, volume, temperature Equation of State (EOS) of molecular hydrogen (deuterium) up to near 1 Mbar. Multiple shockwave and magnetic techniques have compressed hydrogen to several megabars and densities in the range of the metallic phase. The net result is that hydrogen becomes conducting at a pressure between 2 and 4 megabars. Hence, the possibility of making a significant amount of hydrogen into a metal in a static press remains a formidable challenge. The success of such experiments will hopefully answer the questions about hydrogen's metallic vs. conducting molecular phase, superconductivity, and metastability. 4 figures, 15 references

  2. The hydrogen highway

    International Nuclear Information System (INIS)

    Grigg, A.

    2004-01-01

    'Full text:' The Hydrogen Highway in British Columbia, Canada, is a coordinated, large-scale demonstration and deployment program aimed at accelerating the commercialization of hydrogen and fuel cell technologies and products. It will be a showcase for fuel cell vehicles, refuelling stations and stationary power systems leading up to the 2010 Olympic and Paralympic Winter Games in Whistler, BC. The Hydrogen Highway is designed to help address many of the challenges to commercialization identified in the Canadian Fuel Cell Commercialization Roadmap. The project will create an early adopter network of hydrogen and fuel cell microenvironments where technology developers and users can learn about the technical, economic, environmental and social impacts of products. The Hydrogen Highway will give the public and potential purchasers an opportunity to feel, touch and see the new technology, as well as provide the industry with a venue in which to develop industry standards and supply chains of materials and components. While demonstration and deployment programs are a recognized and necessary component in the process to commercialize hydrogen and fuel cell technologies, there is no handbook describing how it should be done. This paper will describe the history, objectives, project details and some of the challenges associated with establishing Canada's Hydrogen Highway. (author)

  3. The hydrogen highway

    Energy Technology Data Exchange (ETDEWEB)

    Grigg, A. [Fuel Cells Canada, Vancouver, British Columbia (Canada)

    2004-07-01

    'Full text:' The Hydrogen Highway in British Columbia, Canada, is a coordinated, large-scale demonstration and deployment program aimed at accelerating the commercialization of hydrogen and fuel cell technologies and products. It will be a showcase for fuel cell vehicles, refuelling stations and stationary power systems leading up to the 2010 Olympic and Paralympic Winter Games in Whistler, BC. The Hydrogen Highway is designed to help address many of the challenges to commercialization identified in the Canadian Fuel Cell Commercialization Roadmap. The project will create an early adopter network of hydrogen and fuel cell microenvironments where technology developers and users can learn about the technical, economic, environmental and social impacts of products. The Hydrogen Highway will give the public and potential purchasers an opportunity to feel, touch and see the new technology, as well as provide the industry with a venue in which to develop industry standards and supply chains of materials and components. While demonstration and deployment programs are a recognized and necessary component in the process to commercialize hydrogen and fuel cell technologies, there is no handbook describing how it should be done. This paper will describe the history, objectives, project details and some of the challenges associated with establishing Canada's Hydrogen Highway. (author)

  4. Hydrogen

    Directory of Open Access Journals (Sweden)

    John O’M. Bockris

    2011-11-01

    Full Text Available The idea of a “Hydrogen Economy” is that carbon containing fuels should be replaced by hydrogen, thus eliminating air pollution and growth of CO2 in the atmosphere. However, storage of a gas, its transport and reconversion to electricity doubles the cost of H2 from the electrolyzer. Methanol made with CO2 from the atmosphere is a zero carbon fuel created from inexhaustible components from the atmosphere. Extensive work on the splitting of water by bacteria shows that if wastes are used as the origin of feed for certain bacteria, the cost for hydrogen becomes lower than any yet known. The first creation of hydrogen and electricity from light was carried out in 1976 by Ohashi et al. at Flinders University in Australia. Improvements in knowledge of the structure of the semiconductor-solution system used in a solar breakdown of water has led to the discovery of surface states which take part in giving rise to hydrogen (Khan. Photoelectrocatalysis made a ten times increase in the efficiency of the photo production of hydrogen from water. The use of two electrode cells; p and n semiconductors respectively, was first introduced by Uosaki in 1978. Most photoanodes decompose during the photoelectrolysis. To avoid this, it has been necessary to create a transparent shield between the semiconductor and its electronic properties and the solution. In this way, 8.5% at 25 °C and 9.5% at 50 °C has been reached in the photo dissociation of water (GaP and InAs by Kainthla and Barbara Zeleney in 1989. A large consortium has been funded by the US government at the California Institute of Technology under the direction of Nathan Lewis. The decomposition of water by light is the main aim of this group. Whether light will be the origin of the post fossil fuel supply of energy may be questionable, but the maximum program in this direction is likely to come from Cal. Tech.

  5. Hydrogen.

    Science.gov (United States)

    Bockris, John O'M

    2011-11-30

    The idea of a "Hydrogen Economy" is that carbon containing fuels should be replaced by hydrogen, thus eliminating air pollution and growth of CO₂ in the atmosphere. However, storage of a gas, its transport and reconversion to electricity doubles the cost of H₂ from the electrolyzer. Methanol made with CO₂ from the atmosphere is a zero carbon fuel created from inexhaustible components from the atmosphere. Extensive work on the splitting of water by bacteria shows that if wastes are used as the origin of feed for certain bacteria, the cost for hydrogen becomes lower than any yet known. The first creation of hydrogen and electricity from light was carried out in 1976 by Ohashi et al. at Flinders University in Australia. Improvements in knowledge of the structure of the semiconductor-solution system used in a solar breakdown of water has led to the discovery of surface states which take part in giving rise to hydrogen (Khan). Photoelectrocatalysis made a ten times increase in the efficiency of the photo production of hydrogen from water. The use of two electrode cells; p and n semiconductors respectively, was first introduced by Uosaki in 1978. Most photoanodes decompose during the photoelectrolysis. To avoid this, it has been necessary to create a transparent shield between the semiconductor and its electronic properties and the solution. In this way, 8.5% at 25 °C and 9.5% at 50 °C has been reached in the photo dissociation of water (GaP and InAs) by Kainthla and Barbara Zeleney in 1989. A large consortium has been funded by the US government at the California Institute of Technology under the direction of Nathan Lewis. The decomposition of water by light is the main aim of this group. Whether light will be the origin of the post fossil fuel supply of energy may be questionable, but the maximum program in this direction is likely to come from Cal. Tech.

  6. L’histoire au théâtre ou l’onde sphérique divergente dans l’œuvre de Jean-Luc Lagarce

    Directory of Open Access Journals (Sweden)

    Cristina Vinuesa Muñoz

    2012-01-01

    Full Text Available The aim is to propose a parallel between a geometric figure and the dramatic work of Jean-Luc Lagarce to elucidate the essence of his writing technique and understanding the proposed dramaturgical challenge. If the comparison between the divergent spherical wave and the author’s playwriting is compelling, it may perhaps serve as a method of textual analysis with yet a method with yet unknown playwrights and see if the circularity can be seen as a contemporary trend. We will observe how a central dramatic event will cause a series of growing dramatic earthquakes interrelated by a complex language and an inter-character specific space.

  7. Hydrogen and its challenges

    International Nuclear Information System (INIS)

    Schal, M.

    2008-01-01

    The future of hydrogen as a universal fuel is in jeopardy unless we are able to produce it through an environment-friendly way and at a competitive cost. Today almost all the hydrogen used in the world is produced by steam reforming of natural gas. This process releases 8 tonnes of CO 2 per tonne of hydrogen produced. Other means of producing hydrogen are the hydrolysis, the very high temperature hydrolysis, and the direct chemical dissociation of water, these processes are greener than steam reforming but less efficient. About one hundred buses in the world operate on fuel cells fed by hydrogen, but it appears that the first industrial use of hydrogen at great scale will be for the local generation of electricity. Globally the annual budget for research concerning hydrogen is 4.4 milliard (10 9 ) euros worldwide. (A.C.)

  8. Hydrogen production methods

    International Nuclear Information System (INIS)

    Hammerli, M.

    1982-07-01

    Old, present and new proceses for producing hydrogen are assessed critically. The emphasis throughout is placed on those processes which could be commercially viable before the turn of the century for large-scale hydrogen manufacture. Electrolysis of water is the only industrial process not dependent on fossil resources for large-scale hydrogen production and is likely to remain so for the next two or three decades. While many new processes, including those utilizing sunlight directly or indirectly, are presently not considered to be commercially viable for large-scale hydrogen production, research and development effort is needed to enhance our understanding of the nature of these processes. Water vapour electrolysis is compared with thermochemical processes: the former has the potential for displacing all other processes for producing hydrogen and oxygen from water

  9. Synthesis of hydrogen-carbon clathrate material and hydrogen evolution therefrom at moderate temperatures and pressures

    Science.gov (United States)

    Lueking, Angela [State College, PA; Narayanan, Deepa [Redmond, WA

    2011-03-08

    A process for making a hydrogenated carbon material is provided which includes forming a mixture of a carbon source, particularly a carbonaceous material, and a hydrogen source. The mixture is reacted under reaction conditions such that hydrogen is generated and/or released from the hydrogen source, an amorphous diamond-like carbon is formed, and at least a portion of the generated and/or released hydrogen associates with the amorphous diamond-like carbon, thereby forming a hydrogenated carbon material. A hydrogenated carbon material including a hydrogen carbon clathrate is characterized by evolution of molecular hydrogen at room temperature at atmospheric pressure in particular embodiments of methods and compositions according to the present invention.

  10. Historical sources about diseases, death and embalming regarding the family of Jean Antoine Michel Agar, Minister of Finance of Gioacchino Murat.

    Science.gov (United States)

    Marinozzi, S; Gazzaniga, V; Giuffra, V; Fornaciari, G

    2011-06-01

    Among the mummies preserved in the Basilica of San Domenico Maggiore in Naples, there are the bodies of the wife and three children of Jean Antoine Michel Agar, Minister of Finance of Naple's Kingdom during the Monarchy of Joachim Murat (1808-1815). Between 1983 and 1987 paleopathological analyses were performed; in particular, X-ray examination allowed investigation of the health status of the Agar family members and reconstruction of the embalming processes used to preserve the bodies. In addition, an analysis of the historical and archival documents was carried out, to formulate hypotheses about the causes of death, demonstrating how these sources could become important instruments to obtain diagnoses and pathological histories.

  11. Examining hydrogen transitions.

    Energy Technology Data Exchange (ETDEWEB)

    Plotkin, S. E.; Energy Systems

    2007-03-01

    This report describes the results of an effort to identify key analytic issues associated with modeling a transition to hydrogen as a fuel for light duty vehicles, and using insights gained from this effort to suggest ways to improve ongoing modeling efforts. The study reported on here examined multiple hydrogen scenarios reported in the literature, identified modeling issues associated with those scenario analyses, and examined three DOE-sponsored hydrogen transition models in the context of those modeling issues. The three hydrogen transition models are HyTrans (contractor: Oak Ridge National Laboratory), MARKAL/DOE* (Brookhaven National Laboratory), and NEMS-H2 (OnLocation, Inc). The goals of these models are (1) to help DOE improve its R&D effort by identifying key technology and other roadblocks to a transition and testing its technical program goals to determine whether they are likely to lead to the market success of hydrogen technologies, (2) to evaluate alternative policies to promote a transition, and (3) to estimate the costs and benefits of alternative pathways to hydrogen development.

  12. Europe - the first hydrogen economy?

    International Nuclear Information System (INIS)

    Hart, D.

    1999-01-01

    An examination of the state of research relating to hydrogen production and utilization indicates that interest in hydrogen from major companies in Europe has increased by several orders of magnitude in recent years. Of the three major areas where a hydrogen economy could be expected to start, namely, Japan, the United States and Europe, the latter may have advantages in diversity of resources, attitudes towards environmental issues and specific fiscal and regulatory structures. Examples of ongoing research and development projects in Europe include Norway's hydrogen combustion turbine to run on hydrogen from decarbonised natural gas, a project in the Netherlands involving mixing hydrogen and methane in the natural gas grid and a variety of projects involving liquid hydrogen refuelling, hydrogen aircraft, hydrogen fuelling stations and fuel cell vehicle development. There are also ongoing projects in carbon sequestration and hydrogen production for power generation and vehicle use. The author's main contention is that the combination of natural surroundings, environmental problems and attitudes, and business and government frameworks strongly suggest that Europe may be the first to have a hydrogen-based economy. 8 refs

  13. Hydrogen fueling stations in Japan hydrogen and fuel cell demonstration project

    International Nuclear Information System (INIS)

    Koseki, K.; Tomuro, J.; Sato, H.; Maruyama, S.

    2004-01-01

    A new national demonstration project of fuel cell vehicles, which is called Japan Hydrogen and Fuel Cell Demonstration Project (JHFC Project), has started in FY2002 on a four-year plan. In this new project, ten hydrogen fueling stations have been constructed in Tokyo and Kanagawa area in FY2002-2003. The ten stations adopt the following different types of fuel and fueling methods: LPG reforming, methanol reforming, naphtha reforming, desulfurized-gasoline reforming, kerosene reforming, natural gas reforming, water electrolysis, liquid hydrogen, by-product hydrogen, and commercially available cylinder hydrogen. Approximately fifty fuel cell passenger cars and a fuel cell bus are running on public roads using these stations. In addition, two hydrogen stations will be constructed in FY2004 in Aichi prefecture where The 2005 World Exposition (EXPO 2005) will be held. The stations will service eight fuel cell buses used as pick-up buses for visitors. We, Engineering Advancement Association of Japan (ENAA), are commissioned to construct and operate a total of twelve stations by Ministry of Economy Trade and Industry (METI). We are executing to demonstrate or identify the energy-saving effect, reduction of the environmental footprint, and issues for facilitating the acceptance of hydrogen stations on the basis of the data obtained from the operation of the stations. (author)

  14. Hydrogen Car Cartridges: A New Strategy for Hydrogen Storage, Delivering and Refueling

    Energy Technology Data Exchange (ETDEWEB)

    Prosini, Pier Paolo

    2007-07-01

    The purpose of the project is to introduce a sustainable model in the automotive field, guarantying the Kyoto agreements. The aim of the project is to develop an innovative hydrogen tank able to power an hydrogen fuel cell car with the same performance of liquid fuelled cars. Most of the system performance are expected to satisfy the Department of Energy (DOE) goals for 2015. The hydrogen releasing system is based on solid NaBH4 which is hydrolyzed with water or steam to obtain hydrogen. Sodium borate is obtained as by-product and it has to be recycled. Pure and humidified hydrogen, ready to be utilized in a fuel cell, is obtained by a simple and sure way. Hydrogen is produced only when it is requested and therefore there is never pressurized hydrogen or hydrogen overproduction The system works at atmospheric pressure avoiding the problems related to handling and storing pressurized gas. The car fuelling could be performed in area like the present service stations. The used cartridges can be removed and substituted by new cartridges. Contemporarily a water tank should be refilled. To improve the total energetic yield it was also proposed a NaBH4 regeneration process directly starting from the products of hydrolysis. (auth)

  15. IEA Hydrogen Implementing Agreement: Three Decades of Collaborative Hydrogen R and D

    Energy Technology Data Exchange (ETDEWEB)

    Nick Beck; Mary-Rose de Valladares

    2006-07-01

    Created in 1977 and now in its Second Generation of Hydrogen R, D and D, the International Energy Agency (IEA) Hydrogen Implementing Agreement (HIA) is the oldest, largest international collaboration on hydrogen Research, Development and Demonstration (RD and D). As a global resource for technical expertise in hydrogen R, D and D, the HIA has expanded worldwide opportunities for hydrogen by undertaking 21 annexes (or tasks) on hydrogen production, storage, analysis of integrated systems and related topics with its 19 member countries. Related topics include hydrogen safety, conversion, economics and markets. The majority of the HIA's R and D portfolio has focused on longer term, pre-competitive R, D and D issues. Of the 21 annexes undertaken by the HIA, 15 are now complete. The HIA is also committed to outreach in support of both its core R and D activities and related issues such as regulation and infrastructure. As ever, the HIA welcomes collaboration and liaison with interested groups in the public and private sectors. (authors)

  16. Reply to comment "On the hydrogen escape: Comment to variability of the hydrogen in the Martian upper atmosphere as simulated by a 3D atmosphere-exosphere coupling by J.-Y. Chaufray et al." by V. Krasnopolsky, Icarus, 281, 262

    Science.gov (United States)

    Chaufray, J.-Y.; Gonzalez-Galindo, F.; Forget, F.; Lopez-Valverde, M.; Leblanc, F.; Modolo, R.; Hess, S.

    2018-02-01

    Krasnopolsky (2017) makes a careful review of our recent results about the Martian hydrogen content of the Martian upper atmosphere (Chaufray et al., 2015). We comment here on his two major points. First, he suggests that the non-thermal escape of H2, and particularly collisions with hot oxygen, not taken into account in our general circulation model (GCM), should modify our reported H2 and H density profiles. This is an important issue; we acknowledge that future effective coupling of our GCM with comprehensive models of the Martian solar wind interaction, ideally after being validated with the latest plasma observations of H2+, would allow for better estimations of the relative importance of the H2 non-thermal and thermal escape processes. For the time being we need assumptions in the GCM, with proper and regular updates. According to a recent and detailed study of the anisotropic elastic and inelastic collision cross sections between O and H2 (Gacesa et al., 2012), the escape rates used by Krasnopolsky (2010) for this process might be overestimated. We therefore do not include non thermal escape of H2 in the model. And secondly, in response to Krasnopolsky's comment on the H escape variability with the solar cycle, we revised our calculations and found a small bug in the computation of the Jeans effusion velocity. Our revised computed H escape rates are included here. They have a small impact on our key conclusions: similar seasonal variations, a reduced variation with the solar cycle but still larger than Krasnopolsky (2017), and again a hydrogen scape systematically lower than the diffusion-limited flux. This bug does not affect the latest Mars Climate Database v5.2.

  17. Canada's hydrogen energy sector

    International Nuclear Information System (INIS)

    Kimmel, T.B.

    2009-01-01

    Canada produces the most hydrogen per capita of any Organization of Economic Cooperation and Development (OECD) country. The majority of this hydrogen is produced by steam methane reforming for industrial use (predominantly oil upgrading and fertilizer production). Canada also has a world leading hydrogen and fuel cell sector. This sector is seeking new methods for making hydrogen for its future energy needs. The paper will discuss Canada's hydrogen and fuel cell sector in the context of its capabilities, its demonstration and commercialization activities and its stature on the world stage. (author)

  18. Electrochemical Hydrogen Compressor

    Energy Technology Data Exchange (ETDEWEB)

    Lipp, Ludwig [FuelCell Energy, Inc., Torrington, CT (United States)

    2016-01-21

    Conventional compressors have not been able to meet DOE targets for hydrogen refueling stations. They suffer from high capital cost, poor reliability and pose a risk of fuel contamination from lubricant oils. This project has significantly advanced the development of solid state hydrogen compressor technology for multiple applications. The project has achieved all of its major objectives. It has demonstrated capability of Electrochemical Hydrogen Compression (EHC) technology to potentially meet the DOE targets for small compressors for refueling sites. It has quantified EHC cell performance and durability, including single stage hydrogen compression from near-atmospheric pressure to 12,800 psi and operation of EHC for more than 22,000 hours. Capital cost of EHC was reduced by 60%, enabling a path to meeting the DOE cost targets for hydrogen compression, storage and delivery ($2.00-2.15/gge by 2020).

  19. Liquid hydrogen and deuterium targets; Cibles a hydrogene et deuterium liquides

    Energy Technology Data Exchange (ETDEWEB)

    Bougon, M; Marquet, M; Prugne, P [Commissariat a l' Energie Atomique, Saclay (France).Centre d' Etudes Nucleaires

    1961-07-01

    A description is given of 1) Atmospheric pressure target: liquid hydrogen, 400 mm thickness; thermal insulation: styrofoam; the hydrogen vapors are used to improve the target cooling; Mylar windows. 2) Vacuum target: 12 liter content: hydrogen or deuterium; liquid thickness 400 mm; thermal insulation is afforded by a vacuum vessel and a liquid nitrogen shield. Recovery and liquefaction of deuterium vapors are managed in the vacuum vessel which holds the target. The target emptying system is designed for operating in a few minutes. (author) [French] Description de: 1) Cible a pression atmospherique; hydrogene liquide, 400 mm d'epaisseur; l'isolement thermique: styrofoam; on utilise les vapeurs d'hydrogene pour ameliorer le refroidissement de la cible; hublots en Mylar. 2) Cible sous vide; contenance 12 litres; hydrogene ou deuterium; epaisseur du liquide 400 mm; l'isolement thermique est assure par une cuve a vide et un ecran d'azote liquide. Recuperation et liquefaction des vapeurs de deuterium sont effectuees dans la cuve a vide contenant la cible. Le systeme de vidange pour la cible est concu pour fonctionner en quelques minutes. (auteur)

  20. Annex 15 of the IEA Hydrogen Implementing Agreement : Photobiological hydrogen production

    Energy Technology Data Exchange (ETDEWEB)

    Lindblad, P. [Uppsala Univ., Uppsala (Sweden)]|[International Energy Agency, Paris (France)

    2004-07-01

    Task 15 of the Hydrogen Implementation Agreement of the International Energy Agency is to advance the science of biophotosynthesis of hydrogen, which is the biological production of hydrogen from water and sunlight using microalgal photosynthesis. A practical process for biophotolysis would result in an innovative biological source of sustainable and environmentally benign renewable energy source. Japan, Norway, Sweden and the United States initially committed to the project. Since then Canada, the Netherlands and the United Kingdom have joined. The current task is to produce hydrogen from both green algae and cyanobacteria with focus on early-stage applied research on biophotolysis processes with intermediate carbon dioxide fixation. Significant advances have also occurred in the scientific field of cyanobacterial biohydrogen. Cyanobacteria has enzymes that metabolise hydrogen. Photosynthetic cyanobacteria have simple nutritional requirements and can grow in air, water, or mineral salts with light as the only source of energy. This research will help provide the advances needed to achieve practical efficiencies and cost objectives of biological hydrogen production. tabs., figs.

  1. The hydrogen issue.

    Science.gov (United States)

    Armaroli, Nicola; Balzani, Vincenzo

    2011-01-17

    Hydrogen is often proposed as the fuel of the future, but the transformation from the present fossil fuel economy to a hydrogen economy will need the solution of numerous complex scientific and technological issues, which will require several decades to be accomplished. Hydrogen is not an alternative fuel, but an energy carrier that has to be produced by using energy, starting from hydrogen-rich compounds. Production from gasoline or natural gas does not offer any advantage over the direct use of such fuels. Production from coal by gasification techniques with capture and sequestration of CO₂ could be an interim solution. Water splitting by artificial photosynthesis, photobiological methods based on algae, and high temperatures obtained by nuclear or concentrated solar power plants are promising approaches, but still far from practical applications. In the next decades, the development of the hydrogen economy will most likely rely on water electrolysis by using enormous amounts of electric power, which in its turn has to be generated. Producing electricity by burning fossil fuels, of course, cannot be a rational solution. Hydroelectric power can give but a very modest contribution. Therefore, it will be necessary to generate large amounts of electric power by nuclear energy of by renewable energies. A hydrogen economy based on nuclear electricity would imply the construction of thousands of fission reactors, thereby magnifying all the problems related to the use of nuclear energy (e.g., safe disposal of radioactive waste, nuclear proliferation, plant decommissioning, uranium shortage). In principle, wind, photovoltaic, and concentrated solar power have the potential to produce enormous amounts of electric power, but, except for wind, such technologies are too underdeveloped and expensive to tackle such a big task in a short period of time. A full development of a hydrogen economy needs also improvement in hydrogen storage, transportation and distribution

  2. Electrochemical hydrogen Storage Systems

    International Nuclear Information System (INIS)

    Macdonald, Digby

    2010-01-01

    As the global need for energy increases, scientists and engineers have found a possible solution by using hydrogen to power our world. Although hydrogen can be combusted as a fuel, it is considered an energy carrier for use in fuel cells wherein it is consumed (oxidized) without the production of greenhouse gases and produces electrical energy with high efficiency. Chemical storage of hydrogen involves release of hydrogen in a controlled manner from materials in which the hydrogen is covalently bound. Sodium borohydride and aminoborane are two materials given consideration as chemical hydrogen storage materials by the US Department of Energy. A very significant barrier to adoption of these materials as hydrogen carriers is their regeneration from 'spent fuel,' i.e., the material remaining after discharge of hydrogen. The U.S. Department of Energy (DOE) formed a Center of Excellence for Chemical Hydrogen Storage, and this work stems from that project. The DOE has identified boron hydrides as being the main compounds of interest as hydrogen storage materials. The various boron hydrides are then oxidized to release their hydrogen, thereby forming a 'spent fuel' in the form of a lower boron hydride or even a boron oxide. The ultimate goal of this project is to take the oxidized boron hydrides as the spent fuel and hydrogenate them back to their original form so they can be used again as a fuel. Thus this research is essentially a boron hydride recycling project. In this report, research directed at regeneration of sodium borohydride and aminoborane is described. For sodium borohydride, electrochemical reduction of boric acid and sodium metaborate (representing spent fuel) in alkaline, aqueous solution has been investigated. Similarly to literature reports (primarily patents), a variety of cathode materials were tried in these experiments. Additionally, approaches directed at overcoming electrostatic repulsion of borate anion from the cathode, not described in the

  3. Electrochemical hydrogen Storage Systems

    Energy Technology Data Exchange (ETDEWEB)

    Dr. Digby Macdonald

    2010-08-09

    As the global need for energy increases, scientists and engineers have found a possible solution by using hydrogen to power our world. Although hydrogen can be combusted as a fuel, it is considered an energy carrier for use in fuel cells wherein it is consumed (oxidized) without the production of greenhouse gases and produces electrical energy with high efficiency. Chemical storage of hydrogen involves release of hydrogen in a controlled manner from materials in which the hydrogen is covalently bound. Sodium borohydride and aminoborane are two materials given consideration as chemical hydrogen storage materials by the US Department of Energy. A very significant barrier to adoption of these materials as hydrogen carriers is their regeneration from 'spent fuel,' i.e., the material remaining after discharge of hydrogen. The U.S. Department of Energy (DOE) formed a Center of Excellence for Chemical Hydrogen Storage, and this work stems from that project. The DOE has identified boron hydrides as being the main compounds of interest as hydrogen storage materials. The various boron hydrides are then oxidized to release their hydrogen, thereby forming a 'spent fuel' in the form of a lower boron hydride or even a boron oxide. The ultimate goal of this project is to take the oxidized boron hydrides as the spent fuel and hydrogenate them back to their original form so they can be used again as a fuel. Thus this research is essentially a boron hydride recycling project. In this report, research directed at regeneration of sodium borohydride and aminoborane is described. For sodium borohydride, electrochemical reduction of boric acid and sodium metaborate (representing spent fuel) in alkaline, aqueous solution has been investigated. Similarly to literature reports (primarily patents), a variety of cathode materials were tried in these experiments. Additionally, approaches directed at overcoming electrostatic repulsion of borate anion from the cathode, not

  4. Hydrogen peroxide safety issues

    International Nuclear Information System (INIS)

    Conner, W.V.

    1993-01-01

    A literature survey was conducted to review the safety issues involved in handling hydrogen peroxide solutions. Most of the information found in the literature is not directly applicable to conditions at the Rocky Flats Plant, but one report describes experimental work conducted previously at Rocky Flats to determine decomposition reaction-rate constants for hydrogen peroxide solutions. Data from this report were used to calculate decomposition half-life times for hydrogen peroxide in solutions containing several decomposition catalysts. The information developed from this survey indicates that hydrogen peroxide will undergo both homogeneous and heterogeneous decomposition. The rate of decomposition is affected by temperature and the presence of catalytic agents. Decomposition of hydrogen peroxide is catalyzed by alkalies, strong acids, platinum group and transition metals, and dissolved salts of transition metals. Depending upon conditions, the consequence of a hydrogen peroxide decomposition can range from slow evolution of oxygen gas to a vapor, phase detonation of hydrogen peroxide vapors

  5. Hydrogen charging, hydrogen content analysis and metallographic examination of hydride in zirconium alloys

    International Nuclear Information System (INIS)

    Singh, R.N.; Kishore, R.; Mukherjee, S.; Roychowdhury, S.; Srivastava, D.; Sinha, T.K.; De, P.K.; Banerjee, S.; Gopalan, B.; Kameswaran, R.; Sheelvantra, Smita S.

    2003-12-01

    Gaseous and electrolytic hydrogen charging techniques for introducing controlled amount of hydrogen in zirconium alloy is described. Zr-1wt%Nb fuel tube, zircaloy-2 pressure tube and Zr-2.5Nb pressure tube samples were charged with up to 1000 ppm of hydrogen by weight using one of the aforementioned methods. These hydrogen charged Zr-alloy samples were analyzed for estimating the total hydrogen content using inert gas fusion technique. Influence of sample surface preparation on the estimated hydrogen content is also discussed. In zirconium alloys, hydrogen in excess of the terminal solid solubility precipitates out as brittle hydride phase, which acquire platelet shaped morphology due to its accommodation in the matrix and can make the host matrix brittle. The F N number, which represents susceptibility of Zr-alloy tubes to hydride embrittlement was measured from the metallographs. The volume fraction of the hydride phase, platelet size, distribution, interplatelet spacing and orientation were examined metallographically using samples sliced along the radial-axial and radial-circumferential plane of the tubes. It was observed that hydride platelet length increases with increase in hydrogen content. Considering the metallographs generated by Materials Science Division as standard, metallographs prepared by the IAEA round robin participants for different hydrogen concentration was compared. It is felt that hydride micrographs can be used to estimate not only that approximate hydrogen concentration of the sample but also its size, distribution and orientation which significantly affect the susceptibility to hydride embrittlement of these alloys. (author)

  6. Hydrogen pellet injection device

    International Nuclear Information System (INIS)

    Kanno, Masahiro.

    1992-01-01

    In a hydrogen pellet injection device, a nozzle block having a hydrogen gas supply channel is disposed at the inner side of a main cryogenic housing, and an electric resistor is attached to the block. Further, a nozzle block and a hydrogen gas introduction pipe are attached by way of a thermal insulating spacer. Electric current is supplied to the resistor to positively heat the nozzle block and melt remaining solid hydrogen in the hydrogen gas supply channel. Further, the effect of temperature elevation due to the resistor is prevented from reaching the side of the hydrogen gas introduction pipe by the thermal insulation spacer. That is, the temperature of the nozzle block is directly and positively elevated, to melt the solid hydrogen rapidly. Preparation operation from the injection of the hydrogen pellet to the next injection can be completed in a shorter period of time compared with a conventional case thereby enabling to make the test more efficient. Further, only the temperature of the nozzle block is elevated with no effect of temperature elevation due to the resistor to other components by the thermal insulation flange. (N.H.)

  7. Oxidation resistant organic hydrogen getters

    Science.gov (United States)

    Shepodd, Timothy J [Livermore, CA; Buffleben, George M [Tracy, CA

    2008-09-09

    A composition for removing hydrogen from an atmosphere, comprising a mixture of a polyphenyl ether and a hydrogenation catalyst, preferably a precious metal catalyst, and most preferably Pt. This composition is stable in the presence of oxygen, will not polymerize or degrade upon exposure to temperatures in excess of 200.degree. C., or prolonged exposure to temperatures in the range of 100-300.degree. C. Moreover, these novel hydrogen getter materials can be used to efficiently removing hydrogen from mixtures of hydrogen/inert gas (e.g., He, Ar, N.sub.2), hydrogen/ammonia atmospheres, such as may be encountered in heat exchangers, and hydrogen/carbon dioxide atmospheres. Water vapor and common atmospheric gases have no adverse effect on the ability of these getter materials to absorb hydrogen.

  8. Liquid hydrogen production via hydrogen sulfide methane reformation

    Science.gov (United States)

    Huang, Cunping; T-Raissi, Ali

    Hydrogen sulfide (H 2S) methane (CH 4) reformation (H 2SMR) (2H 2S + CH 4 = CS 2 + 4H 2) is a potentially viable process for the removal of H 2S from sour natural gas resources or other methane containing gases. Unlike steam methane reformation that generates carbon dioxide as a by-product, H 2SMR produces carbon disulfide (CS 2), a liquid under ambient temperature and pressure-a commodity chemical that is also a feedstock for the synthesis of sulfuric acid. Pinch point analyses for H 2SMR were conducted to determine the reaction conditions necessary for no carbon lay down to occur. Calculations showed that to prevent solid carbon formation, low inlet CH 4 to H 2S ratios are needed. In this paper, we analyze H 2SMR with either a cryogenic process or a membrane separation operation for production of either liquid or gaseous hydrogen. Of the three H 2SMR hydrogen production flowsheets analyzed, direct liquid hydrogen generation has higher first and second law efficiencies of exceeding 80% and 50%, respectively.

  9. Hydrogen Technologies Safety Guide

    Energy Technology Data Exchange (ETDEWEB)

    Rivkin, C. [National Renewable Energy Lab. (NREL), Golden, CO (United States); Burgess, R. [National Renewable Energy Lab. (NREL), Golden, CO (United States); Buttner, W. [National Renewable Energy Lab. (NREL), Golden, CO (United States)

    2015-01-01

    The purpose of this guide is to provide basic background information on hydrogen technologies. It is intended to provide project developers, code officials, and other interested parties the background information to be able to put hydrogen safety in context. For example, code officials reviewing permit applications for hydrogen projects will get an understanding of the industrial history of hydrogen, basic safety concerns, and safety requirements.

  10. Contribution to the study of catalytic hydrogen-deuterium exchange between hydrogen and hydrocarbons; Contribution a l'etude de l'echange catalytique hydrogene-deuterium entre l'hydrogene et les hydrocarbures

    Energy Technology Data Exchange (ETDEWEB)

    Ravoire, J

    1958-12-20

    The hydrogen-deuterium exchange between molecular hydrogen and hydrocarbons over a platinum and charcoal catalyst was studied in a static system. The change in isotopic composition of molecular hydrogen was followed by a thermal conductivity method. Cyclo-pentane and cyclohexane were chosen because of their stability. A reversible inactivation of the catalyst was observed with both hydrocarbons. The reasons for this inactivation are unknown but it was shown that reactivation led to satisfactory reproducibility. A kinetic study was done with cyclohexane in the range 30 to 160 deg. C, and 40 to 360 mm for the pressure of hydrogen, and 10 to 70 mm for the pressure of cyclohexane. The order of the reaction with respect to cyclohexane pressure is always close to zero; the order with respect to that of hydrogen is 0.5 above 100 deg. C. It decreases with increasing temperature and becomes negative (-0.5 at 30 deg. C), characterizing an inhibition by hydrogen. At the same time, the apparent activation energy goes from 6 to 13 kcal/mole. (author) [French] L'echange hydrogene-deuterium entre l'hydrogene moleculaire et les hydrocarbures sur un catalyseur au platine depose sur charbon a ete etudie a l'aide d'un appareil statique. La teneur en deuterium de L'hydrogene moleculaire a ete suivie par conductibilite thermique. Le cyclopentane et le cyclohexane ont ete choisis en raison de leur stabilite. Une desactivation reversible du catalyseur pendant son utilisation a ete observee pour les deux hydrocarbures. Les causes de la desactivation n'ont pas ete determinees, mais il a ete montre qu'une reactivation conduisait une reproductibilite satisfaisante. Une etude cinetique a ete conduite avec le cyclohexane dans le domaine: 30 deg C - 160 deg C, 40 mm - 360 mm comme pression d'hydrogene, 10 mm - 70 mm comme pression de cyclohexane. L'ordre par rapport a la pression de cyclohexane est toujours voisin de zero; l'ordre par rapport a la pression d'hydrogene est de 0,5 au-dessus de

  11. Hydrogen/oxygen injection stopping method for nuclear power plant and emergent hydrogen/oxygen injection device

    International Nuclear Information System (INIS)

    Ishida, Ryoichi; Ota, Masamoto; Takagi, Jun-ichi; Hirose, Yuki

    1998-01-01

    The present invention provides a device for suppressing increase of electroconductivity of reactor water during operation of a BWR type reactor, upon occurrence of reactor scram of the plant or upon stopping of hydrogen/oxygen injection due to emergent stoppage of an injection device so as not to deteriorate the integrity of a gas waste processing system upon occurrence of scram. Namely, when injection of hydrogen/oxygen is stopped during plant operation, the injection amount of hydrogen is reduced gradually. Subsequently, injection of hydrogen is stopped. With such procedures, the increase of electroconductivity of reactor water can be suppressed upon stoppage of hydrogen injection. When injection of hydrogen/oxygen is stopped upon shut down of the plant, the amount of hydrogen injection is changed depending on the change of the feedwater flow rate, and then the plant is shut down while keeping hydrogen concentration of feedwater to a predetermined value. With such procedures, increase of the reactor water electroconductivity can be suppressed upon stoppage of hydrogen injection. Upon emergent stoppage of the hydrogen/oxygen injection device, an emergent hydrogen/oxygen injection device is actuated to continue the injection of hydrogen/oxygen. With such procedures, elevation of reactor water electroconductivity can be suppressed. (I.S.)

  12. Enhancing hydrogen spillover and storage

    Science.gov (United States)

    Yang, Ralph T [Ann Arbor, MI; Li, Yingwel [Ann Arbor, MI; Lachawiec, Jr., Anthony J.

    2011-05-31

    Methods for enhancing hydrogen spillover and storage are disclosed. One embodiment of the method includes doping a hydrogen receptor with metal particles, and exposing the hydrogen receptor to ultrasonification as doping occurs. Another embodiment of the method includes doping a hydrogen receptor with metal particles, and exposing the doped hydrogen receptor to a plasma treatment.

  13. A study of the electrochemical hydrogenation of o-xylene in a PEM hydrogenation reactor

    International Nuclear Information System (INIS)

    Fonocho, R.; Gardner, C.L.; Ternan, M.

    2012-01-01

    In this study, we investigate the electrochemical hydrogenation of o-xylene in a proton exchange membrane hydrogenation reactor (PEMHR). The reactor was operated isothermally over the temperature range 20–68 °C and at a pressure of 1 atm in a semi-batch mode. Hydrogen was fed into the anode compartment and o-xylene into the cathode. The hydrogenation efficiency was investigated at different current densities and temperatures. Results obtained show that the hydrogenation efficiency increases with temperature but decreases with current density. At low current densities the hydrogenation efficiency approaches 100%. A zero dimensional model was used to fit the data and extract a rate constant for the hydrogenation reaction. The activation energy for this reaction was found to be 28 kJ/mole.

  14. The mean free path of hydrogen ionizing photons during the epoch of reionization

    Science.gov (United States)

    Rahmati, Alireza; Schaye, Joop

    2018-05-01

    We use the Aurora radiation-hydrodynamical simulations to study the mean free path (MFP) for hydrogen ionizing photons during the epoch of reionization. We directly measure the MFP by averaging the distance 1 Ry photons travel before reaching an optical depth of unity along random lines-of-sight. During reionization the free paths tend to end in neutral gas with densities near the cosmic mean, while after reionization the end points tend to be overdense but highly ionized. Despite the increasing importance of discrete, over-dense systems, the cumulative contribution of systems with NHI ≲ 1016.5 cm-2 suffices to drive the MFP at z ≈ 6, while at earlier times higher column densities are more important. After reionization the typical size of HI systems is close to the local Jeans length, but during reionization it is much larger. The mean free path for photons originating close to galaxies, {MFP_{gal}}, is much smaller than the cosmic MFP. After reionization this enhancement can remain significant up to starting distances of ˜1 comoving Mpc. During reionization, however, {MFP_{gal}} for distances ˜102 - 103 comoving kpc typically exceeds the cosmic MFP. These findings have important consequences for models that interpret the intergalactic MFP as the distance escaped ionizing photons can travel from galaxies before being absorbed and may cause them to under-estimate the required escape fraction from galaxies, and/or the required emissivity of ionizing photons after reionization.

  15. Solar Hydrogen Reaching Maturity

    Directory of Open Access Journals (Sweden)

    Rongé Jan

    2015-09-01

    Full Text Available Increasingly vast research efforts are devoted to the development of materials and processes for solar hydrogen production by light-driven dissociation of water into oxygen and hydrogen. Storage of solar energy in chemical bonds resolves the issues associated with the intermittent nature of sunlight, by decoupling energy generation and consumption. This paper investigates recent advances and prospects in solar hydrogen processes that are reaching market readiness. Future energy scenarios involving solar hydrogen are proposed and a case is made for systems producing hydrogen from water vapor present in air, supported by advanced modeling.

  16. Hydrogen assisted diesel combustion

    Energy Technology Data Exchange (ETDEWEB)

    Lilik, Gregory K.; Boehman, Andre L. [The EMS Energy Institute, The Pennsylvania State University, University Park, PA 16802 (United States); Zhang, Hedan; Haworth, Daniel C. [Department of Mechanical and Nuclear Engineering, The Pennsylvania State University, University Park, PA 16802 (United States); Herreros, Jose Martin [Escuela Tecnica Superior de Ingenieros Industriales, Universidad de Castilla La-Mancha, Avda. Camilo Jose Cela s/n, 13071 Ciudad Real (Spain)

    2010-05-15

    Hydrogen assisted diesel combustion was investigated on a DDC/VM Motori 2.5L, 4-cylinder, turbocharged, common rail, direct injection light-duty diesel engine, with a focus on exhaust emissions. Hydrogen was substituted for diesel fuel on an energy basis of 0%, 2.5%, 5%, 7.5%, 10% and 15% by aspiration of hydrogen into the engine's intake air. Four speed and load conditions were investigated (1800 rpm at 25% and 75% of maximum output and 3600 rpm at 25% and 75% of maximum output). A significant retarding of injection timing by the engine's electronic control unit (ECU) was observed during the increased aspiration of hydrogen. The retarding of injection timing resulted in significant NO{sub X} emission reductions, however, the same emission reductions were achieved without aspirated hydrogen by manually retarding the injection timing. Subsequently, hydrogen assisted diesel combustion was examined, with the pilot and main injection timings locked, to study the effects caused directly by hydrogen addition. Hydrogen assisted diesel combustion resulted in a modest increase of NO{sub X} emissions and a shift in NO/NO{sub 2} ratio in which NO emissions decreased and NO{sub 2} emissions increased, with NO{sub 2} becoming the dominant NO{sub X} component in some combustion modes. Computational fluid dynamics analysis (CFD) of the hydrogen assisted diesel combustion process captured this trend and reproduced the experimentally observed trends of hydrogen's effect on the composition of NO{sub X} for some operating conditions. A model that explicitly accounts for turbulence-chemistry interactions using a transported probability density function (PDF) method was better able to reproduce the experimental trends, compared to a model that ignores the influence of turbulent fluctuations on mean chemical production rates, although the importance of the fluctuations is not as strong as has been reported in some other recent modeling studies. The CFD results confirm

  17. Present status of research on hydrogen energy and perspective of HTGR hydrogen production system

    Energy Technology Data Exchange (ETDEWEB)

    Miyamoto, Yoshiaki; Ogawa, Masuro; Akino, Norio [Japan Atomic Energy Research Inst., Oarai, Ibaraki (Japan). Oarai Research Establishment] [and others

    2001-03-01

    A study was performed to make a clear positioning of research and development on hydrogen production systems with a High Temperature Gas-cooled Reactor (HTGR) under currently promoting at the Japan Atomic Energy Research Institute through a grasp of the present status of hydrogen energy, focussing on its production and utilization as an energy in future. The study made clear that introduction of safe distance concept for hydrogen fire and explosion was practicable for a HTGR hydrogen production system, including hydrogen properties and need to provide regulations applying to handle hydrogen. And also generalization of hydrogen production processes showed technical issues of the HTGR system. Hydrogen with HTGR was competitive to one with fossil fired system due to evaluation of production cost. Hydrogen is expected to be used as promising fuel of fuel cell cars in future. In addition, the study indicated that there were a large amount of energy demand alternative to high efficiency power generation and fossil fuel with nuclear energy through the structure of energy demand and supply in Japan. Assuming that hydrogen with HTGR meets all demand of fuel cell cars, an estimation would show introduction of the maximum number of about 30 HTGRs with capacity of 100 MWt from 2020 to 2030. (author)

  18. Hydrogen meter prooftesting

    International Nuclear Information System (INIS)

    McCown, J.J.; Mettler, G.W.

    1976-04-01

    Two diffusion type hydrogen meters have been tested on the Prototype Applications Loop (PAL). The ANL designed unit was used to monitor hydrogen in sodium during FFTF startup and over a wide range of hydrogen concentrations resulting from chemical additions to the sodium and cover gas. A commercially available meter was added and its performance compared with the ANL unit. Details of the test work are described

  19. Hydrogen-water vapor mixtures: Control of hydrothermal atmospheres by hydrogen osmosis

    Science.gov (United States)

    Shaw, H.R.

    1963-01-01

    Experiments at 700??C and 800 bars total pressure demonstrate positive deviations from ideality for mixtures of hydrogen and H2O gases. The deviations are greater than predicted with Stockmayer's method. The composition of the mixture and the fugacity of hydrogen are controlled by diffusing hydrogen through metallic membranes. The results give the fugacities of both H 2O and oxygen.

  20. A humanist's legacy in medical informatics: visions and accomplishments of Professor Jean-Raoul Scherrer.

    Science.gov (United States)

    Geissbühler, A; Lovis, C; Spahni, S; Appel, R D; Ratib, O; Boyer, C; Hochstrasser, D F; Baud, R

    2002-01-01

    To report about the work of Prof. Jean-Raoul Scherrer, and show how his humanist vision, his medical skills and his scientific background have enabled and shaped the development of medical informatics over the last 30 years. Starting with the mainframe-based patient-centered hospital information system DIOGENE in the 70s, Prof. Scherrer developed, implemented and evolved innovative concepts of man-machine interfaces, distributed and federated environments, leading the way with information systems that obstinately focused on the support of care providers and patients. Through a rigorous design of terminologies and ontologies, the DIOGENE data would then serve as a basis for the development of clinical research, data mining, and lead to innovative natural language processing techniques. In parallel, Prof. Scherrer supported the development of medical image management, ranging from a distributed picture archiving and communication systems (PACS) to molecular imaging of protein electrophoreses. Recognizing the need for improving the quality and trustworthiness of medical information on the Web, Prof. Scherrer created the Health-On-the-Net (HON) foundation. These achievements, made possible thanks to his visionary mind, deep humanism, creativity, generosity and determination, have made of Prof. Scherrer a true pioneer and leader of the human-centered, patient-oriented application of information technology for improving healthcare.

  1. Entretiens Jacques Cordonier, Alain Jacquesson, Jean-Frédéric Jauslin, Hubert Villard

    CERN Document Server

    2016-01-01

    Beaucoup d’usages sont tellement ancrés dans nos vies que l’on ne s’interroge guère sur la manière dont ils sont advenus. Les réseaux informatiques, les échanges qu’ils génèrent, semblent aujourd’hui aussi « naturels » aux digital natives que la conversation à distance par téléphones fixes allait de soi il y a cinquante ans. Pour autant que l’on se pose la question, il est difficile d’imaginer qu’un domaine institutionnel, celui des bibliothèques en l’occurrence, ait joué un rôle important dans l’avènement et l’expansion de ces réseaux, au plan suisse voire international, et, par voie de conséquence, dans le développement et la normalisation des échanges intercantonaux. Cela est néanmoins une réalité. Ce livre d’entretiens fait apparaître en quoi Jacques Cordonier, Alain Jacquesson, Jean-Frédéric Jauslin et Hubert Villard, directeurs romands parmi les plus marquants de la fin du 20 e siècle, chacun avec son regard et sa tessiture, dans son canton ou à ...

  2. e quotidien à tout prix. Analyse du retour à l’ordinaire dans Le drap d’Yves Ravey et Un an de Jean Echenoz

    Directory of Open Access Journals (Sweden)

    Isabelle Décarie

    2007-06-01

    Full Text Available Pourquoi le quotidien reprend-il le dessus avec force dans les occasions les moins courantes, comme celle d’une maladie mortelle ou d’une fugue à la suite d’un crime ? Comment le quotidien est-il raconté dans de telles circonstances ? Ces questions préliminaires guident ici l’analyse de deux romans, Le drap d’Yves Ravey (2002 et Un an de Jean Echenoz (1997, dans lesquels des événements, qui rompent pourtant avec le quotidien des personnages, sont chaque fois dépassés pour faire place au retour du temps ordinaire. Il s’agit ici de voir comment les romanciers parviennent à maintenir un récit de tous les jours tout en racontant une situation peu banale, puis de tenter de répondre à cette autre interrogation : quelle force nous pousse à vouloir à tout prix raconter le quotidien malgré des circonstances dramatiques ? Why does everyday life take over even in the least mundane of occasions, as is the case with a terminal illness or a disappearance after a crime ? How is everyday life narrated in such circumstances ? These preliminary questions guide the analysis of two novels, Le drap by Yves Ravey (2002 and Un an by Jean Echenoz (1997, two books in which events, although far from ordinary, are each time transcended to herald the return of everyday life. This article explores the ways in which Echenoz and Ravey manage to tell an extraordinary story while narrating ordinary events and tries to answer the question : what force compels us to tell the story of the ordinary at any price, even when confronted with dramatic circumstances ?

  3. Il limite e l’altrove: il mito di Jean-Paul Belmondo nella Siberia di Andreï Makine The Bound and the Elsewhere: the Myth of Jean-Paul Belmondo in Andreï Makine’s Siberia

    Directory of Open Access Journals (Sweden)

    Elisabetta Abignente

    2011-04-01

    Full Text Available The narrative work of Andreï Makine (1957, a French writer of Siberian origin, is situated on the border between two geographical and cultural spaces: on the one hand the wide, wild and snowy Siberia of his childhood; on the other hand France, a mythic place which the main characters, often teenagers, of his novels look at as a model. The contrast between these two worlds is described in a particularly forceful way in one of his early novels, Au temps du fleuve Amour (1994, in which the author tells the overwhelming effect of the screening of a popular French comedy with Jean-Paul Belmondo (Le Magnifique, 1973 in a small Siberian village. Looking closely at the entire sequence which is devoted to the film in the novel, the paper aims to reconstruct the process of mythicizing the Belmondo character by the three young protagonists and to investigate the functions that the episode covers in the novel. Focusing on the different narrative levels that characterize the film plot, we show how the “phenomenon Belmondo” embodies in the novel the idea of a triple border: a geographic one (Europe/Asia, an expressive one (writing/imagine and, above all, an imaginary one (reality/fiction. We also show how this phenomenon refers, in the novel, to one of the central themes of Makine’s work: literary vocation.The narrative work of Andreï Makine (1957, a French writer of Siberian origin, is situated on the border between two geographical and cultural spaces: on the one hand the wide, wild and snowy Siberia of his childhood; on the other hand France, a mythic place which the main characters, often teenagers, of his novels look at as a model. The contrast between these two worlds is described in a particularly forceful way in one of his early novels, Au temps du fleuve Amour (1994, in which the author tells the overwhelming effect of the screening of a popular French comedy with Jean-Paul Belmondo (Le Magnifique, 1973 in a small Siberian village. Looking

  4. Decentralized and direct solar hydrogen production: Towards a hydrogen economy in MENA region

    Energy Technology Data Exchange (ETDEWEB)

    Bensebaa, Farid; Khalfallah, Mohamed; Ouchene, Majid

    2010-09-15

    Hydrogen has certainly some advantages in spite of its high cost and low efficiency when compared to other energy vectors. Solar energy is an abundant, clean and renewable source of energy, currently competing with fossil fuel for water heating without subsidy. Photo-electrochemical, thermo-chemicals and photo-biological processes for hydrogen production processes have been demonstrated. These decentralised hydrogen production processes using directly solar energy do not require expensive hydrogen infrastructure for packaging and delivery in the short and medium terms. MENA region could certainly be considered a key area for a new start to a global deployment of hydrogen economy.

  5. Hydrogen Contractors Meeting

    Energy Technology Data Exchange (ETDEWEB)

    Fitzsimmons, Tim [Dept. of Energy (DOE), Washington DC (United States). Office of Basic Energy Sciences. Division of Materials Sciences and Engineering

    2006-05-16

    This volume highlights the scientific content of the 2006 Hydrogen Contractors Meeting sponsored by the Division of Materials Sciences and Engineering (DMS&E) on behalf of the Office of Basic Energy Sciences (BES) of the U. S. Department of Energy (DOE). Hydrogen Contractors Meeting held from May 16-19, 2006 at the Crystal Gateway Marriott Hotel Arlington, Virginia. This meeting is the second in a series of research theme-based Contractors Meetings sponsored by DMS&E held in conjunction with our counterparts in the Office of Energy Efficiency and Renewable Energy (EERE) and the first with the Hydrogen, Fuel Cells and Infrastructure Technologies Program. The focus of this year’s meeting is BES funded fundamental research underpinning advancement of hydrogen storage. The major goals of these research efforts are the development of a fundamental scientific base in terms of new concepts, theories and computational tools; new characterization capabilities; and new materials that could be used or mimicked in advancing capabilities for hydrogen storage.

  6. Hydrogen-storing hydride complexes

    Science.gov (United States)

    Srinivasan, Sesha S [Tampa, FL; Niemann, Michael U [Venice, FL; Goswami, D Yogi [Tampa, FL; Stefanakos, Elias K [Tampa, FL

    2012-04-10

    A ternary hydrogen storage system having a constant stoichiometric molar ratio of LiNH.sub.2:MgH.sub.2:LiBH.sub.4 of 2:1:1. It was found that the incorporation of MgH.sub.2 particles of approximately 10 nm to 20 nm exhibit a lower initial hydrogen release temperature of 150.degree. C. Furthermore, it is observed that the particle size of LiBNH quaternary hydride has a significant effect on the hydrogen sorption concentration with an optimum size of 28 nm. The as-synthesized hydrides exhibit two main hydrogen release temperatures, one around 160.degree. C. and the other around 300.degree. C., with the main hydrogen release temperature reduced from 310.degree. C. to 270.degree. C., while hydrogen is first reversibly released at temperatures as low as 150.degree. C. with a total hydrogen capacity of 6 wt. % to 8 wt. %. Detailed thermal, capacity, structural and microstructural properties have been demonstrated and correlated with the activation energies of these materials.

  7. Hydrogen storage container

    Science.gov (United States)

    Wang, Jy-An John; Feng, Zhili; Zhang, Wei

    2017-02-07

    An apparatus and system is described for storing high-pressure fluids such as hydrogen. An inner tank and pre-stressed concrete pressure vessel share the structural and/or pressure load on the inner tank. The system and apparatus provide a high performance and low cost container while mitigating hydrogen embrittlement of the metal tank. System is useful for distributing hydrogen to a power grid or to a vehicle refueling station.

  8. Quantitative analysis of hydrogen and hydrogen isotopes at the solid surface

    International Nuclear Information System (INIS)

    Trocellier, P.

    2007-01-01

    Because of the importance of the effects bound to the hydrogen presence in materials it is particularly important to determine with accuracy the surface and volume distribution of hydrogen. Meanwhile the electronic structure of the hydrogen (one electron) do not allow to use many characterization techniques as the electrons spectroscopies or the X micro analysis. The author presents other possible techniques. (A.L.B.)

  9. Cathodic hydrogen charging of zinc

    International Nuclear Information System (INIS)

    Panagopoulos, C.N.; Georgiou, E.P.; Chaliampalias, D.

    2014-01-01

    Highlights: •Incorporation of hydrogen into zinc and formation of zinc hydrides. •Investigation of surface residual stresses due to hydrogen diffusion. •Effect of hydrogen diffusion and hydride formation on mechanical properties of Zn. •Hydrogen embrittlement phenomena in zinc. -- Abstract: The effect of cathodic hydrogen charging on the structural and mechanical characteristics of zinc was investigated. Hardening of the surface layers of zinc, due to hydrogen incorporation and possible formation of ZnH 2 , was observed. In addition, the residual stresses brought about by the incorporation of hydrogen atoms into the metallic matrix, were calculated by analyzing the obtained X-ray diffraction patterns. Tensile testing of the as-received and hydrogen charged specimens revealed that the ductility of zinc decreased significantly with increasing hydrogen charging time, for a constant value of charging current density, and with increasing charging current density, for a constant value of charging time. However, the ultimate tensile strength of this material was slightly affected by the hydrogen charging procedure. The cathodically charged zinc exhibited brittle transgranular fracture at the surface layers and ductile intergranular fracture at the deeper layers of the material

  10. Hydrogen damage in stainless steel

    International Nuclear Information System (INIS)

    Caskey, G.R. Jr.

    1981-01-01

    Hydrogen damage has been studied in a wide variety of stainless steels. Both internal and external hydrogen damage were evaluated by ductility or J-integral under rising tensile loads and by fractography. Analysis of the data has emphasized the potential effects of strain-induced martensite on hydrogen damage. Strain-induced martensite was neither necessary nor sufficient for hydrogen damage in the alloys studied. Neither ductility loss nor fracture-mode change correlated generally with martensite formation. Alloy composition, particularly nickel and nitrogen contents, was the primary factor in resistance to hydrogen damage. Thermomechanical processing, however, could alter the degree of hydrogen damage in an alloy and was critical for optimizing resistance to hydrogen damage. 10 figures, 10 tables

  11. Hydrogen environment embrittlement

    International Nuclear Information System (INIS)

    Donovan, J.A.

    1975-01-01

    Exposure of many metals to gaseous hydrogen causes losses in elongation, reduction of area, and fracture toughness, and causes increases in slow crack growth rate or fatigue life compared with values obtained in air or vacuum. Hydrogen pressure, temperature, and purity significantly influence deleterious effects. The strength and structural characteristics of the metal influence the degradation of its properties by hydrogen. Several theories have been proposed to explain the loss of properties in hydrogen, but none has gained wide acceptance. The embrittlement mechanism and the role of diffusion are, therefore, open questions and need more quantitative experimental data both to test the proposed theories and to allow the development of realistic preventive measures. (U.S.)

  12. Hydrogen peroxide kinetics in water radiolysis

    Science.gov (United States)

    Iwamatsu, Kazuhiro; Sundin, Sara; LaVerne, Jay A.

    2018-04-01

    The kinetics of the formation and reaction of hydrogen peroxide in the long time γ- radiolysis of water is examined using a combination of experiment with model calculations. Escape yields of hydrogen peroxide on the microsecond time scale are easily measured with added radical scavengers even with substantial amounts of initial added hydrogen peroxide. The γ-radiolysis of aqueous hydrogen peroxide solutions without added radical scavengers reach a steady state limiting concentration of hydrogen peroxide with increasing dose, and that limit is directly proportional to the initial concentration of added hydrogen peroxide. The dose necessary to reach that limiting hydrogen peroxide concentration is also proportional to the initial concentration, but dose rate has a very small effect. The addition of molecular hydrogen to aqueous solutions of hydrogen peroxide leads to a decrease in the high dose limiting hydrogen peroxide concentration that is linear with the initial hydrogen concentration, but the amount of decrease is not stoichiometric. Proton irradiations of solutions with added hydrogen peroxide and hydrogen are more difficult to predict because of the decreased yields of radicals; however, with a substantial increase in dose rate there is a sufficient decrease in radical yields that hydrogen addition has little effect on hydrogen peroxide decay.

  13. Nanostructured materials for hydrogen storage

    Science.gov (United States)

    Williamson, Andrew J.; Reboredo, Fernando A.

    2007-12-04

    A system for hydrogen storage comprising a porous nano-structured material with hydrogen absorbed on the surfaces of the porous nano-structured material. The system of hydrogen storage comprises absorbing hydrogen on the surfaces of a porous nano-structured semiconductor material.

  14. Hydrogenation properties and microstructure of Ti-Mn-based alloys for hybrid hydrogen storage vessel

    International Nuclear Information System (INIS)

    Shibuya, Masachika; Nakamura, Jin; Akiba, Etsuo

    2008-01-01

    Ti-Mn-based AB 2 -type alloys which are suitable for a hybrid hydrogen storage vessel have been synthesized and evaluated hydrogenation properties. As the third element V was added to Ti-Mn binary alloys. All the alloys synthesized in this work mainly consist of the C14 Laves and BCC phase. In the case of Ti0.5V0.5Mn alloy, the amounts of hydrogen absorption was 1.8 wt.% at 243 K under the atmosphere of 7 MPa H 2 , and the hydrogen desorption pressure was in the range of 0.2-0.4 MPa at 243 K. The hydrogen capacity of this alloy did not saturate under 7 MPa H 2 and seems to increase with hydrogen pressure up to 35 MPa that is estimated working pressure of the hybrid hydrogen storage vessel

  15. Regional Consumer Hydrogen Demand and Optimal Hydrogen Refueling Station Siting

    Energy Technology Data Exchange (ETDEWEB)

    Melendez, M.; Milbrandt, A.

    2008-04-01

    Using a GIS approach to spatially analyze key attributes affecting hydrogen market transformation, this study proposes hypothetical hydrogen refueling station locations in select subregions to demonstrate a method for determining station locations based on geographic criteria.

  16. Micro hydrogen for portable power : generating opportunities for hydrogen and fuel cells

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    2006-07-01

    A new fuel cell technology for portable applications was reviewed. Success for the fuel cell industry will be achieved primarily by supplanting lithium-ion batteries, and fuel cells for portable applications have clear advantages to batteries in addition to their known environmental benefits. Micro hydrogen {sup TM} is the integrated combination of hydrogen fuel cell, hydrogen storage and delivery, fluidic interconnects and power conditioning electronics required for creating high energy density portable power sources. The small size, low heat production, environmental sustainability and refueling flexibility of the systems provides enormous economic opportunities for the use of micro hydrogen in cell phone technology, personal digital assistants and other electronic gadgets. Details of a trial to test and evaluate micro hydrogen fuel cell powered bike lights were presented. Further programs are planned for external demonstrations of high-beam search and rescue lighting, flashlights for security personnel and portable hydrogen power sources that will be used by multiple organizations throughout British Columbia. It was concluded that fuel cell technology must match the lithium-ion battery's performance by providing fast recharge, high energy density, and adaptability. Issues concerning refueling and portable and disposable cartridges for micro hydrogen systems were also discussed. 8 figs.

  17. A Sociedade do Consumo, Os Media e A Comunicação nas Obras Iniciais de Jean Baudrillard Consumption Society, Medias and the Consumption Society in Jean Baudrillard Initial Works

    Directory of Open Access Journals (Sweden)

    Tarcyanie Cajueiro Santos

    2011-07-01

    Full Text Available Este texto objetiva refletir sobre as relações entre comunicação e consumo tomando como referência os livros de Baudrillard: O sistema dos objetos, A sociedade de consumo e Para uma crítica da economia política do signo, pois eles apontam para um período de transição, em que o autor busca combinar as teorias do signo com as críticas marxistas do capitalismo. Do ponto de vista teórico, o marxismo é substituído pela semiologia, e, do ponto de vista social, a técnica e o consumo tornam-se centrais na vida das pessoas. A partir daí, procura-se analisar a pertinência teórica destes enfoques, levando em consideração a sociedade mediática.This text aims to reflect on the relations between communication and consumption by taking as reference the books of Jean Baudrillard: The System of Objects, The Consumer Society and For a Critique of Political Economy of the Sign, which are representative of transition period when the author tries to combine the theories of the sign with the Marxist critics of capitalism. From a theoretical standpoint, Marxism is replaced by semiotics, and from the social point of view, technique and consumption have become central to people’s lives. From there, we try to analyze the theoretical relevance of these approaches, considering the media society.

  18. Chemochromic Hydrogen Leak Detectors

    Science.gov (United States)

    Roberson, Luke; Captain, Janine; Williams, Martha; Smith, Trent; Tate, LaNetra; Raissi, Ali; Mohajeri, Nahid; Muradov, Nazim; Bokerman, Gary

    2009-01-01

    At NASA, hydrogen safety is a key concern for space shuttle processing. Leaks of any level must be quickly recognized and addressed due to hydrogen s lower explosion limit. Chemo - chromic devices have been developed to detect hydrogen gas in several embodiments. Because hydrogen is odorless and colorless and poses an explosion hazard, there is an emerging need for sensors to quickly and accurately detect low levels of leaking hydrogen in fuel cells and other advanced energy- generating systems in which hydrogen is used as fuel. The device incorporates a chemo - chromic pigment into a base polymer. The article can reversibly or irreversibly change color upon exposure to hydrogen. The irreversible pigment changes color from a light beige to a dark gray. The sensitivity of the pigment can be tailored to its application by altering its exposure to gas through the incorporation of one or more additives or polymer matrix. Furthermore, through the incorporation of insulating additives, the chemochromic sensor can operate at cryogenic temperatures as low as 78 K. A chemochromic detector of this type can be manufactured into any feasible polymer part including injection molded plastic parts, fiber-spun textiles, or extruded tapes. The detectors are simple, inexpensive, portable, and do not require an external power source. The chemochromic detectors were installed and removed easily at the KSC launch pad without need for special expertise. These detectors may require an external monitor such as the human eye, camera, or electronic detector; however, they could be left in place, unmonitored, and examined later for color change to determine whether there had been exposure to hydrogen. In one type of envisioned application, chemochromic detectors would be fabricated as outer layers (e.g., casings or coatings) on high-pressure hydrogen storage tanks and other components of hydrogen-handling systems to provide visible indications of hydrogen leaks caused by fatigue failures or

  19. Hydrogen axion star: metallic hydrogen bound to a QCD axion BEC

    Energy Technology Data Exchange (ETDEWEB)

    Bai, Yang; Barger, Vernon; Berger, Joshua [Department of Physics, University of Wisconsin-Madison,1150 University Ave, Madison, WI 53706 (United States)

    2016-12-23

    As a cold dark matter candidate, the QCD axion may form Bose-Einstein condensates, called axion stars, with masses around 10{sup −11} M{sub ⊙}. In this paper, we point out that a brand new astrophysical object, a Hydrogen Axion Star (HAS), may well be formed by ordinary baryonic matter becoming gravitationally bound to an axion star. We study the properties of the HAS and find that the hydrogen cloud has a high pressure and temperature in the center and is likely in the liquid metallic hydrogen state. Because of the high particle number densities for both the axion star and the hydrogen cloud, the feeble interaction between axion and hydrogen can still generate enough internal power, around 10{sup 13} W×(m{sub a}/5 meV){sup 4}, to make these objects luminous point sources. High resolution ultraviolet, optical and infrared telescopes can discover HAS via black-body radiation.

  20. Liquid hydrogen production via hydrogen sulfide methane reformation

    Energy Technology Data Exchange (ETDEWEB)

    Huang, Cunping; T-Raissi, Ali [University of Central Florida, Florida Solar Energy Center, 1769 Clearlake Road, Cocoa, FL 32922 (United States)

    2008-01-03

    Hydrogen sulfide (H{sub 2}S) methane (CH{sub 4}) reformation (H{sub 2}SMR) (2H{sub 2}S + CH{sub 4} = CS{sub 2} + 4H{sub 2}) is a potentially viable process for the removal of H{sub 2}S from sour natural gas resources or other methane containing gases. Unlike steam methane reformation that generates carbon dioxide as a by-product, H{sub 2}SMR produces carbon disulfide (CS{sub 2}), a liquid under ambient temperature and pressure - a commodity chemical that is also a feedstock for the synthesis of sulfuric acid. Pinch point analyses for H{sub 2}SMR were conducted to determine the reaction conditions necessary for no carbon lay down to occur. Calculations showed that to prevent solid carbon formation, low inlet CH{sub 4} to H{sub 2}S ratios are needed. In this paper, we analyze H{sub 2}SMR with either a cryogenic process or a membrane separation operation for production of either liquid or gaseous hydrogen. Of the three H{sub 2}SMR hydrogen production flowsheets analyzed, direct liquid hydrogen generation has higher first and second law efficiencies of exceeding 80% and 50%, respectively. (author)

  1. Membrane pumping technology, helium and hydrogen isotopes separation in the fusion hydrogen

    International Nuclear Information System (INIS)

    Pigarov, A.Yu.; Pistunovich, V.I.; Busnyuk, A.O.

    1994-01-01

    A gas pumping system for the ITER, improved by implementation of superpermeable membranes for selective hydrogen isotope exhaust, is considered. The study of the pumping capability of a niobium membrane for a hydrogen-helium mixture has been fulfilled. The membrane superpermeability can be only realized for atomic hydrogen. Helium does not pass through the membrane, and its presence does not affect the hydrogen pumping. A detailed Monte Carlo simulation of gas behavior for the experimental facility has been done. The probability of permeation for a hydrogen atom for one collision with the membrane is ∼0.1; the same probability of molecule permeation is ∼10 -5 . The probability for atomization, i.e. re-emission of an atomizer is ∼0.2; the probability of recombination of an atom is ∼0.2

  2. Hydrogen Storage In Nanostructured Materials

    OpenAIRE

    Assfour, Bassem

    2011-01-01

    Hydrogen is an appealing energy carrier for clean energy use. However, storage of hydrogen is still the main bottleneck for the realization of an energy economy based on hydrogen. Many materials with outstanding properties have been synthesized with the aim to store enough amount of hydrogen under ambient conditions. Such efforts need guidance from material science, which includes predictive theoretical tools. Carbon nanotubes were considered as promising candidates for hydrogen storag...

  3. A New Optimization Strategy to Improve Design of Hydrogen Network Based Formulation of Hydrogen Consumers

    Directory of Open Access Journals (Sweden)

    M. R. S. Birjandi

    2018-03-01

    Full Text Available This paper describes a shortcut model for formulating hydrogen consumers in hydrogen network based on inlet/outlet flow rate and inlet/outlet hydrogen purity. The formulation procedure is obtained using nonlinear regression of industrial data and represents the relationship between the flow rate and purity of outlet and inlet streams. The proposed model can estimate outlet flow rate and purity of hydrogen by changing inlet flow rate and purity of hydrogen. The shortcut model is used to achieve optimal operation of consumers and it optimizes hydrogen network design.

  4. Hydrogen production by several cyanobacteria

    Energy Technology Data Exchange (ETDEWEB)

    Kumar, Dhruv; Kumar, H.D. (Banaras Hindu Univ., Varanasi (India). Dept. of Botany)

    1992-11-01

    Twenty species belonging to eleven genera of nitrogen-fixing and non-nitrogen-fixing cyanobacteria were screened for production of hydrogen. Only one species each of Nostoc and Anabaena showed light-and nitrogenase-dependent aerobic hydrogen production. The highest rate of aerobic hydrogen production was recorded in Anabaena sp. strain CA. When incubated anaerobically under 99% Ar + 1% CO[sub 2], all the tested strains produced hydrogen. Nickel supplementation completely abolished hydrogen production both under aerobic and anaerobic conditions, except in Anabaena sp. strain CA, where only the rate of production was decreased. Species of Plectonema, Oscillatoria and Spirulina showed methyl viologen-dependent (hydrogenase-dependent) hydrogen production. Other physiological activities were also studied with a view to selecting a suitable organism for large-scale production of hydrogen. (author)

  5. Development of hydrogen oxidizing bacteria using hydrogen from radiolysis or metal corrosion

    International Nuclear Information System (INIS)

    Libert, M.F.; Sellier, R.; Marty, V.; Camaro, S.

    2000-01-01

    The effect of many parameters need to be studied to characterize the long term behavior of nuclear waste in a deep repository. These parameters concern the chemical effects, radiolytic effects, mechanical properties, water composition, and microbiological activity. To evaluate microbial activity in such an environment, work was focused on an inventory of key nutrients (C, H, 0, N, P, S) and energy sources required for bacterial growth. The production of hydrogen in the nuclear waste environment leads to the growth of hydrogen oxidizing bacteria, which modify the gas production balance. A deep repository containing bituminized waste drums implies several sources of hydrogen: - water radiolysis; -corrosion of metal containers; - radiolysis of the embedding matrix (bitumen). Two deep geological disposal conditions leading to H 2 production in a bituminized nuclear waste environment were simulated in the present study: - H 2 production by iron corrosion under anaerobic conditions was simulated by adding 10% of H 2 in the atmosphere; - H 2 production by radiolysis of bitumen matrix was approached by subjecting this material to external gamma irradiation with a dose rate near real conditions (6 Gy/h). The presence of dissolved H 2 in water allows the growth of hydrogen oxidizing bacteria leading to: - CO 2 and N 2 production; - H 2 consumption; - lower NO 3 - concentration caused by reduction to nitrogen. In the first case, hydrogen consumption is limited by the NO 3 - release rate from the bitumen matrix. In the second case, however, under gamma radiation at a low dose rate, hydrogen production is weak, and the hydrogen is completely consumed by microorganisms. Knowledge about these hydrogen oxidizing bacteria is just beginning to emerge. Heterotrophic denitrifying bacteria adapt well to hydrogen metabolism (autotrophic metabolism) by oxidizing H 2 instead of hydrocarbons. (authors)

  6. Hydrogen production from microbial strains

    Science.gov (United States)

    Harwood, Caroline S; Rey, Federico E

    2012-09-18

    The present invention is directed to a method of screening microbe strains capable of generating hydrogen. This method involves inoculating one or more microbes in a sample containing cell culture medium to form an inoculated culture medium. The inoculated culture medium is then incubated under hydrogen producing conditions. Once incubating causes the inoculated culture medium to produce hydrogen, microbes in the culture medium are identified as candidate microbe strains capable of generating hydrogen. Methods of producing hydrogen using one or more of the microbial strains identified as well as the hydrogen producing strains themselves are also disclosed.

  7. Hydrogen storage compositions

    Science.gov (United States)

    Li, Wen; Vajo, John J.; Cumberland, Robert W.; Liu, Ping

    2011-04-19

    Compositions for hydrogen storage and methods of making such compositions employ an alloy that exhibits reversible formation/deformation of BH.sub.4.sup.- anions. The composition includes a ternary alloy including magnesium, boron and a metal and a metal hydride. The ternary alloy and the metal hydride are present in an amount sufficient to render the composition capable of hydrogen storage. The molar ratio of the metal to magnesium and boron in the alloy is such that the alloy exhibits reversible formation/deformation of BH.sub.4.sup.- anions. The hydrogen storage composition is prepared by combining magnesium, boron and a metal to prepare a ternary alloy and combining the ternary alloy with a metal hydride to form the hydrogen storage composition.

  8. The US Department of Energy hydrogen baseline survey: assessing knowledge and opinions about hydrogen technology

    International Nuclear Information System (INIS)

    Christy Cooper; Tykey Truett; R L Schmoyer

    2006-01-01

    To design and maintain its education program, the United States Department of Energy (DOE) Hydrogen Program conducted a statistically-valid national survey to measure knowledge and opinions of hydrogen among key target audiences. The Hydrogen Baseline Knowledge Survey provides a reference for designing the DOE hydrogen education strategy and will be used in comparisons with future surveys to measure changes in knowledge and opinions over time. The survey sampled four U.S. populations: (1) public; (2) students; (3) state and local government officials; and (4) potential large-scale hydrogen end-users in three business categories. Questions measured technical understanding of hydrogen and opinions about hydrogen safety. Other questions assessed visions of the likelihood of future hydrogen applications and sources of energy information. Several important findings were discovered, including a striking lack of technical understanding across all survey groups, as well as a strong correlation between technical knowledge and opinions about safety: those who demonstrated an understanding of hydrogen technologies expressed the least fear of its safe use. (authors)

  9. A Study on Methodology of Assessment for Hydrogen Explosion in Hydrogen Production Facility

    International Nuclear Information System (INIS)

    Jung, Gun Hyo

    2007-02-01

    Due to the exhaustion of fossil fuel as energy sources and international situation insecurity for political factor, unstability of world energy market is rising, consequently, a substitute energy development have been required. Among substitute energy to be discussed, producing hydrogen from water by nuclear energy which does not release carbon is a very promising technology. Very high temperature gas cooled reactor is expected to be utilized since the procedure of producing hydrogen requires high temperature over 1000 .deg. C. Hydrogen production facility using very high temperature gas cooled reactor lies in situation of high temperature and corrosion which makes hydrogen release easily. In case of hydrogen release, there lies a danger of explosion. Moreover explosion not only has a bad influence upon facility itself but very high temperature gas cooled reactor which also result in unsafe situation that might cause serious damage. However, from point of thermal-hydraulics view, long distance makes low efficiency result. In this study, therefore, outlines of hydrogen production using nuclear energy is researched. Several methods for analyzing the effects of hydrogen explosion upon high temperature gas cooled reactor are reviewed. Reliability physics model which is appropriate for assessment is used. Using this model, leakage probability, rupture probability and structure failure probability of very high temperature gas cooled reactor is evaluated classified by detonation volume and distance. Also based on standard safety criteria which is a value of 1x10 -6 , the safety distance between very high temperature and hydrogen production facility is calculated. In the future, assessment for characteristic of very high temperature gas cooled reactor, capacity to resist pressure from outside hydrogen explosion and overpressure for large amount of detonation volume in detail is expected to identify more precise distance using reliability physics model in this paper. This

  10. Experiments with cold hydrogen atoms

    International Nuclear Information System (INIS)

    Leonas, V.B.

    1981-01-01

    Numerous investigations of atomic processes in Waseous phase on the surface with participation of ''cold'' hydrogen atoms, made during the last years, are considered. The term ''cold atom'' means the range of relative collision energies E<10 MeV (respectively 'ultracold ' atoms at E< or approximately 1 MeV) which corresponds to the range of temperatures in tens (units) of K degrees. Three main ranges of investigations where extensive experimental programs are realized are considered: study of collisional processes with hydrogen atom participation, hydrogen atoms being of astrophysical interest; study of elastic atom-molecular scattering at superlow energies and studies on the problem of condensed hydrogen. Hydrogen atoms production is realized at dissociation in non-electrode high-frequency or superhigh-frequency discharge. A method of hydrogen quantum generator and of its modifications appeared to be rather an effective means to study collisional changes of spin state of hydrogen atoms. First important results on storage and stabilization of the gas of polarized hydrogen atoms are received

  11. Modelling hydrogen permeation in a hydrogen effusion probe for monitoring corrosion of carbon steels

    International Nuclear Information System (INIS)

    Santiwiparat, P.; Rirksomboon, T.; Steward, F.R.; Lister, D.H.; Cook, W.G.

    2015-01-01

    Hydrogen accumulation inside carbon steel and stainless steel devices shaped like cylindrical cups attached to a pipe containing hydrogen gas was modelled with MATLAB software. Hydrogen transfer around the bottom of the cups (edge effect) and diffusion through the cup walls (material effect) were accounted for. The variation of hydrogen pressure with time was similar for both materials, but the hydrogen plateau pressures in stainless steel cups were significantly higher than those in carbon steel cups. The geometry of the cup also affected the plateau pressure inside the cup. (author)

  12. Advanced hydrogen electrode for hydrogen-bromide battery

    Science.gov (United States)

    Kosek, Jack A.; Laconti, Anthony B.

    1987-01-01

    Binary platinum alloys are being developed as hydrogen electrocatalysts for use in a hydrogen bromide battery system. These alloys were varied in terms of alloy component mole ratio and heat treatment temperature. Electrocatalyst evaluation, performed in the absence and presence of bromide ion, includes floating half cell polarization studies, electrochemical surface area measurements, X ray diffraction analysis, scanning electron microscopy analysis and corrosion measurements. Results obtained to date indicate a platinum rich alloy has the best tolerance to bromide ion poisoning.

  13. Hydrogen gains further momentum

    International Nuclear Information System (INIS)

    Anon.

    2017-01-01

    As first industrial production projects should become a reality in the next few years, hydrogen as a source of energy will find important applications with mobility, which momentum is rapid and irresistible. Next steps will be the (large capacity) storage of hydrogen associated to power-to-gas systems and the generalization of renewable energies. This document presents 5 articles, which themes are: Description and explanation of the process of hydrogen production; Presentation of the H2V project for the construction, in Normandy, of the first operational industrial hydrogen production plant using electric power 100 pc generated by renewable energies; The conversion of electric power from renewable energies through hydrogen storage and fuel cells for buildings applications (Sylfen project); The development of a reversible fuel cell at Mines-Paris Tech University, that will be adapted to the storage of renewable electric power; Hydrogen as a lever for the development of zero-emission vehicles, from trucks to cars and bicycles

  14. HNEI wind-hydrogen program

    International Nuclear Information System (INIS)

    Neill, D.; Holst, B.; Yu, C.; Huang, N.; Wei, J.

    1990-01-01

    This paper reports on wind powered hydrogen production which is promising for Hawaii because Hawaii's wind energy potential exceeds the state's current electrical energy requirements by more than twenty-fold. Wind energy costs are now approaching $0.06 to $0.08/kWh, and the U.S. Department of Energy has set a goal of $0.04/kWh. These conditions make wind power a good source for electrolytic production of hydrogen. HNEI's wind-hydrogen program, at the HNEI-Kahua Wind Energy Storage Test facility on the island of Hawaii, is developing energy storage and power electronic systems for intermittent wind and solar devices to provide firm power to the utility or to a stand-alone hybrid system. In mid 1990, the first wind-hydrogen production/storage/ generation system is scheduled for installation. HNEI's wind- hydrogen program will provide research, development, demonstration, and education on the great potential and benefits of hydrogen

  15. IEA Hydrogen Implementing Agreement's Second Generation R and D and the Hydrogen Economy

    Energy Technology Data Exchange (ETDEWEB)

    Beck, N.; Garcia-Conde, A. G.; Riis, T. U.; Luzzi, A.; Valladares, M. R. de

    2005-07-01

    Since its creation by the International Energy Agency in the late 1970's, the IEA Hydrogen Implementing Agreement (HIA) has been at the forefront of collaborative international hydrogen research and development (R and D) (http://www.ieahia.org. ) The collective body of HIA hydrogen R and D will contribute to definition of the hydrogen economy. The five-year [2004-2009) mission of the IEA HIA is to advance the adoption of a Hydrogen Economy through strategic implementation of collaborative R and D and outreach programs that address key issues and barriers. The three goals for the Second Generation HIA are: Advancement of science and technology via pre-commercial collaborative RD and D programs; Assessment of market environment, including the non-energy sector; and Implementation of outreach program, aimed at community acceptance and support. The HIA launched its Second Generation of hydrogen R and D in the latter part of 2004. The HIA's anniversary report: In Pursuit of the Future: 25 Years of IEA Research towards the realization of Hydrogen Energy Systems (http://ieahia.org/pdfs/IEA_AnniversaryReport_HIA.pdf) chronicles its contributions to hydrogen R and D. As the hydrogen economy takes shape, the HIA is pleased to share highlights of its R and D history together with progress on planned activities and its six current annexes, listed below: Task 15 Photobiological Production of Hydrogen Task 16 Hydrogen from Carbon-Containing Materials Task 17 Solid and Liquid Storage Task 18 Integrated Systems Evaluation Task 19 Safety Task 20 Hydrogen from Waterphotolysis Planned successor annexes in storage and photobiological hydrogen production will also be discussed, along with a task on high temperature hydrogen production that is now in the definition phase. Over 250 experts from the sixteen member HIA countries and the European Union contribute to this portfolio of cutting edge hydrogen R and D and analysis activities. Several other countries are expected to

  16. Hydrogen gas driven permeation through tungsten deposition layer formed by hydrogen plasma sputtering

    International Nuclear Information System (INIS)

    Uehara, Keiichiro; Katayama, Kazunari; Date, Hiroyuki; Fukada, Satoshi

    2015-01-01

    Highlights: • H permeation tests for W layer formed by H plasma sputtering are performed. • H permeation flux through W layer is larger than that through W bulk. • H diffusivity in W layer is smaller than that in W bulk. • The equilibrium H concentration in W layer is larger than that in W bulk. - Abstract: It is important to evaluate the influence of deposition layers formed on plasma facing wall on tritium permeation and tritium retention in the vessel of a fusion reactor from a viewpoint of safety. In this work, tungsten deposition layers having different thickness and porosity were formed on circular nickel plates by hydrogen RF plasma sputtering. Hydrogen permeation experiment was carried out at the temperature range from 250 °C to 500 °C and at hydrogen pressure range from 1013 Pa to 101,300 Pa. The hydrogen permeation flux through the nickel plate with tungsten deposition layer was significantly smaller than that through a bare nickel plate. This indicates that a rate-controlling step in hydrogen permeation was not permeation through the nickel plate but permeation though the deposition layer. The pressure dependence on the permeation flux differed by temperature. Hydrogen permeation flux through tungsten deposition layer is larger than that through tungsten bulk. From analysis of the permeation curves, it was indicated that hydrogen diffusivity in tungsten deposition layer is smaller than that in tungsten bulk and the equilibrium hydrogen concentration in tungsten deposition layer is enormously larger than that in tungsten bulk at same hydrogen pressure.

  17. Kinetics of the excited muonic hydrogen in the mixtures of hydrogen isotopes in helium

    International Nuclear Information System (INIS)

    Bystritskij, V.M.; Kravtsov, A.V.; Popov, N.P.

    1989-01-01

    De-excitation of the excited muonic hydrogen in the mixture of hydrogen isotopes and helium is considered. The method is proposed which allows one to determine the rates of the muon transfer from the excited muonic hydrogen to helium nuclei, as well as the probability of the direct muon atomic capture by nuclei of hydrogen isotopes. 20 refs.; 4 figs

  18. Composition and method for hydrogen storage

    Science.gov (United States)

    Mao, Wendy L. (Inventor); Mao, Ho-Kwang (Inventor)

    2004-01-01

    A method for hydrogen storage includes providing water and hydrogen gas to a containment volume, reducing the temperature of the water and hydrogen gas to form a hydrogen clathrate at a first cryogenic temperature and a first pressure and maintaining the hydrogen clathrate at second cryogenic temperature within a temperature range of up to 250 K to effect hydrogen storage. The low-pressure hydrogen hydrate includes H.sub.2 O molecules, H.sub.2 molecules and a unit cell including polyhedron cages of hydrogen-bonded frameworks of the H.sub.2 O molecules built around the H.sub.2 molecules.

  19. The Norwegian hydrogen guide 2010

    Energy Technology Data Exchange (ETDEWEB)

    2010-07-01

    Hydrogen technologies are maturing at rapid speed, something we experience in Norway and around the globe every day as demonstration projects for vehicles and infrastructure expand at a rate unthinkable of only a few years ago. An example of this evolution happened in Norway in 2009 when two hydrogen filling stations were opened on May the 11th, making it possible to arrange the highly successful Viking Rally from Oslo to Stavanger with more than 40 competing teams. The Viking Rally demonstrated for the public that battery and hydrogen-electric vehicles are technologies that exist today and provide a real alternative for zero emission mobility in the future. The driving range of the generation of vehicles put into demonstration today is more than 450 km on a full hydrogen tank, comparable to conventional vehicles. As the car industry develops the next generation of vehicles for serial production within the next 4-5 years, we will see vehicles that are more robust, more reliable and cost effective. Also on the hydrogen production and distribution side progress is being made, and since renewable hydrogen from biomass and electrolysis is capable of making mobility basically emission free, hydrogen can be a key component in combating climate change and reducing local emissions. The research Council of Norway has for many years supported the development of hydrogen and fuel cell technologies, and The Research Council firmly believes that hydrogen and fuel cell technologies play a crucial role in the energy system of the future. Hydrogen is a flexible transportation fuel, and offers possibilities for storing and balancing intermittent electricity in the energy system. Norwegian companies, research organisations and universities have during the last decade developed strong capabilities in hydrogen and fuel cell technologies, capabilities it is important to further develop so that Norwegian actors can supply high class hydrogen and fuel cell technologies to global markets

  20. Texaco, carbide form hydrogen plant venture

    International Nuclear Information System (INIS)

    Anon.

    1992-01-01

    This paper reports that Texaco Inc. and Union Carbide Industrial Gases Inc. (UCIG) have formed a joint venture to develop and operate hydrogen plants. The venture, named HydroGEN Supply Co., is owned by Texaco Hydrogen Inc., a wholly owned subsidiary of Texaco, and UCIG Hydrogen Services Inc., a wholly owned subsidiary of UCIG. Plants built by HydroGEN will combine Texaco's HyTEX technology for hydrogen production with UCIG's position in cryogenic and advanced air separation technology. Texaco the U.S. demand for hydrogen is expected to increase sharply during the next decade, while refinery hydrogen supply is expected to drop. The Clean Air Act amendments of 1990 require U.S. refiners to lower aromatics in gasoline, resulting in less hydrogen recovered by refiners from catalytic reforming units. Meanwhile, requirements to reduce sulfur in diesel fuel will require more hydrogen capacity

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