WorldWideScience

Sample records for judzis boucher mccammon

  1. Boucher de Perthes and the Discovery of Human Antiquity

    Directory of Open Access Journals (Sweden)

    James Sackett

    2014-01-01

    Full Text Available Why did Boucher de Perthes’ discoveries of handaxes in the Somme River’s gravels need to be verified by English geologist Joseph Prestwich, and antiquarian John Evans, before members of the French Academy of Sciences changed their minds about evidence for the antiquity of humanity? The problem was not with the evidence itself, but with the way Boucher de Perthes interpreted and published it. Teetotal, but an over-imaginative Romantic, a provincial bureaucrat and an antiquarian scholar, an autodidact, and a generous provider of charity to local workers and early advocate for women’s education, Boucher de Perthes was not only eccentric and remarkable, but also his own worst enemy. He was easily dismissed by the scientific elite of Paris until more handaxes were found at other sites and in different countries, and were recognised as being similar to those found at Abbeville.

  2. Boucher Neuhäuser Syndrome - A rare cause of inherited hypogonadotropic hypogonadism. A case of two adult siblings with two novel mutations in PNPLA6.

    Science.gov (United States)

    Langdahl, Jakob H; Frederiksen, Anja L; Nguyen, Nina; Brusgaard, Klaus; Juhl, Claus B

    2017-02-01

    Boucher Neuhäuser Syndrome (BNS) is a rare clinical syndrome with autosomal recessive inheritance defined by early-onset ataxia, hypogonadism and chorioretinal dystrophy. We present two siblings diagnosed with BNS in late adult life identified with compound heterozygous state of two novel PNPLA6 mutations. Five healthy siblings were non- or heterozygous carriers of the mutations. The cases, which presented with ataxia in childhood and hypogonadotropic hypogonadism (HH), were diagnosed at age 17 and 25, respectively, when examined for delayed puberty. The youngest case, a 55-year old male, was referred to our department in 2006 for evaluation of secondary causes of osteoporosis, which he developed despite adequate testosterone replacement therapy. The unusual medical history with childhood ataxia and hypogonadotropic hypogonadism lead to further examinations and eventually the diagnosis of BNS. The older sister of the proband also displayed the triad of ataxia, HH and chorioretinal dystrophy accompanied by cerebellar atrophy and in 2014, we found the mutations in PNPLA6. BNS is a rare cause of HH and secondary osteoporosis, but should be considered in patients presenting with one or more of the key features. Genetic screening is becoming increasingly available and inexpensive and accordingly this may be considered earlier and by broader indication in unusual phenotypic presentations. The increasing knowledge of causes for inherited diseases should extend the use of genetic screening, as the correct diagnosis will benefit the patients. Copyright © 2016 Elsevier Masson SAS. All rights reserved.

  3. Genetics Home Reference: Boucher-Neuhäuser syndrome

    Science.gov (United States)

    ... the cerebellum ). Affected individuals have an unsteady walking style (gait) and frequent falls. Another key feature of ... s00415-014-7516-3. Epub 2014 Sep 30. Citation on PubMed or Free article on PubMed Central ...

  4. VizieR Online Data Catalog: Wisconsin soft X-ray diffuse background all-sky Survey (McCammon+ 1983)

    Science.gov (United States)

    McCammon, D.; Burrows, D. N.; Sanders, W. T.; Kraushaar, W. L.

    1997-10-01

    The catalog contains all-sky survey of the soft X-ray diffuse background and the count-rate data from which the maps were made for the ten flights included in the survey. It contains 40 files in the machine-readable version and includes documentation and utility subroutines. The data files contain different band maps (B, C, M, M1, M2, I, J, 2-6 keV) in a 0 degree-centered Aitoff projection, in a 180-degree-centered Aitoff projection, in a north polar projection, and in a south polar projection. Lookup tables in the form of FITS images are provided for conversion between pixel coordinates and Galactic coordinates for the various projections. The bands are: B = 130-188eV C = 160-284eV M1 = 440-930eV M2 = 600-1100eV I = 770-1500eV J = 1100-2200eV 2-6keV = 1800-6300eV (51 data files).

  5. Sexual Health Concerns in Patients with Cardiovascular Disease

    Science.gov (United States)

    ... Patient Page Sexual Health Concerns in Patients With Cardiovascular Disease Lindsey Rosman , John M. Cahill , Susan L. McCammon , ... and difficulty achieving and maintaining an erection. 2 Cardiovascular disease and its treatment may also affect a man’s ...

  6. Cultural probes

    DEFF Research Database (Denmark)

    Madsen, Jacob Østergaard

    The aim of this study was thus to explore cultural probes (Gaver, Boucher et al. 2004), as a possible methodical approach, supporting knowledge production on situated and contextual aspects of occupation.......The aim of this study was thus to explore cultural probes (Gaver, Boucher et al. 2004), as a possible methodical approach, supporting knowledge production on situated and contextual aspects of occupation....

  7. Description and biology of two new species of Neotropical Liriomyza Mik (Diptera, Agromyzidae, mining leaves of Bocconia (Papaveraceae

    Directory of Open Access Journals (Sweden)

    Stephanie Boucher

    2014-01-01

    Full Text Available Liriomyza mystica Boucher & Nishida, sp. n., and Liriomyza prompta Boucher & Nishida, sp. n. are described from Costa Rica. Both species were reared from leaves of Bocconia frutescens L. (Papaveraceae. The latter species was also reared from B. arborea S. Watson. Larvae of L. mystica mine primary veins of large, relatively old, mature leaves, and L. prompta mine blades of small to large, mature leaves. These represent the first record of agromyzids feeding on Bocconia. Biological information is also given and illustrated.

  8. 75 FR 22637 - Proposed Collection; Comment Request

    Science.gov (United States)

    2010-04-29

    ... orders of the Commission declaring that the registration of that investment company cease to be in effect... techniques or other forms of information technology. Consideration will be given to comments and suggestions... Boucher, Director/ CIO, Securities and Exchange Commission, C/O Shirley Martinson, 6432 General Green Way...

  9. 75 FR 18246 - Proposed Collection; Comment Request

    Science.gov (United States)

    2010-04-09

    ... be issued in connection with employee benefit plans. We estimate that Form S-8 takes approximately 24... techniques or other forms of information technology. Consideration will be given to comments and suggestions... Boucher, Director/ CIO, Securities and Exchange Commission, C/O Shirley Martinson, 6432 General Green Way...

  10. Tri-Service Procedural Guidelines for Ecological Risk Assessments. Volume 1.

    Science.gov (United States)

    1996-05-01

    developed for agrichemical evaluations, especially for evaluating the effects of insecticides on non-target insects (e.g., honey bees ( apis mellifera ); see...Ormiston, R. Boucher, C.A. Luke and D.E. Paquette. 1987. Environmental biomonitoring with feral rodent species, In S.S. Sandhu, D.M. Demanine, M.J. Mass

  11. Atypical Neurophysiology Underlying Episodic and Semantic Memory in Adults with Autism Spectrum Disorder

    Science.gov (United States)

    Massand, Esha; Bowler, Dermot M.

    2015-01-01

    Individuals with autism spectrum disorder (ASD) show atypicalities in episodic memory (Boucher et al. in Psychological Bulletin, 138 (3), 458-496, 2012). We asked participants to recall the colours of a set of studied line drawings (episodic judgement), or to recognize line drawings alone (semantic judgement). Cycowicz et al. ("Journal of…

  12. Modelling the partitioning of ammonium nitrate in the convective boundary layer

    NARCIS (Netherlands)

    Aan de Brugh, J.M.J.; Henzing, J.S.; Schaap, M.|info:eu-repo/dai/nl/413333175; Morgan, W.T.; Coe, H.; Krol, M.C.|info:eu-repo/dai/nl/078760410

    2011-01-01

    Aerosols have a pronounced influence on the climate system, both directly by scattering and absorbing incoming solar radiation (Hess et al., 1998; Haywood and Boucher, 2000; IPCC, 2007) and indirectly by altering cloud properties (Rosenfeld et al., 2008; 5 Kaufman et al., 2002). The combined climate

  13. Body weight and growth rate of South African Angora goat kids ...

    African Journals Online (AJOL)

    grethas

    E-mail: grethasn@nda.agric.za. Introduction ... production has been investigated (McGregor, 1998), but very little work has been done on the effect of different ..... Grégoire, R.J., Fahmy, M.H., Boucher, J.M., Tremblay, A. & Mercier, J., 1996.

  14. Browse Title Index

    African Journals Online (AJOL)

    Items 101 - 150 of 699 ... ... Bioassessment of the ecological integrity of river ecosystems using aquatic macroinvertebrates: an overview with a focus on South Africa, Abstract. Dean J Ollis, Helen F Dallas, Karen J Esler, Charles Boucher. Vol 40, No 1 (2015), Biochemical and haematological responses in African catfish Clarias ...

  15. Optimization of Hybrid-Electric Propulsion Systems for Small Remotely-Piloted Aircraft

    Science.gov (United States)

    2011-03-24

    hades.mech.northwestern.edu/index.php/Brushed_DC_Motor_Theory [31 Robert J. Boucher, The Electric Motor Handbook, 2nd ed., 1995. [32 John D. Anderson...Jr., Introduction to Flight, 4th ed. Boston, MA: McGraw-Hill, 2000. 83 [33 Daniel P. Raymer , Aircraft Desigh: A Conceptual approach, 3rd ed

  16. Innovation, apprentissage et cadres institutionnels dans des ...

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

    Trois secteurs de transformation des ressources naturelles - ceux des pâtes et ... devrait déboucher sur des recommandations concrètes pour l'élaboration de ... bibliothèque de ressources aideront à améliorer les systèmes d'information et ...

  17. Targeting Ovarian Cancer with Porphysome Nanotechnology

    Science.gov (United States)

    2014-10-01

    Gross, S. M.; Miles, D. T.; Murray, R. W. Nanometer Gold Clusters Protected by Surface-Bound Monolayers of Thiolated Poly(Ethylene Glycol) Polymer ... Polymeric Micelles in Poorly Permeable Tumours Depends on Size. Nature nanotechnology 2011, 6, 815-823. 13. Pluen, A.; Boucher, Y.; Ramanujan, S...developed for improving their stability, delivery effi ciency, and preferen- tial accumulation at target-tissue, such as polymers loaded with

  18. A Quantitative Measure of JS's Memory

    Science.gov (United States)

    Ben Shalom, Dorit; Faran, Yifat; Boucher, Jill

    2010-01-01

    JS is a highly able, well-educated 37 year old man with Asperger syndrome. A recent qualitative paper (Boucher, 2007) described his self-report of verbal and visual memory difficulties. The present paper used the WMS-III to compare the memory profile of JS to that of the adults with HFA in the Williams et al. (2005) WMS-III paper. Results show…

  19. Evidence-based diabetes nutrition therapy recommendations are effective: the key is individualization

    OpenAIRE

    Franz, Marion J; Boucher, Jackie L; Evert, Alison B

    2014-01-01

    Marion J Franz,1 Jackie L Boucher,2 Alison B Evert3 1Nutrition Concepts by Franz, Inc., Minneapolis, MN, 2Minneapolis Heart Institute Foundation, Minneapolis, MN, 3Diabetes Care Center, University of Washington Medical Center, Seattle, WA, USA Abstract: Current nutrition therapy recommendations for the prevention and treatment of diabetes are based on a systematic review of evidence and answer important nutrition care questions. First, is diabetes nutrition therapy effective? Clinical trials...

  20. PIST – IS THE NEWEST BLACK BERRY WINE GRAPE VARIETY WITH COLORED FLESH AND JUICE, FOR THE PRODUCTION GLOBAL BENEFIT RED WINES

    OpenAIRE

    Zamanidi P. C.; Troshin L. P.; Radchevskiy P. P.

    2014-01-01

    Newest technical black berry variety named Piste (“Faith” in Greek) with colored flesh and juice breeded at Athens Institute of Viticulture (Greece) by researchers Zamanidi P., L. Troshin and P. Radchevskii in 2007 by crossing the Greek varieties Afoos (Mavrodafni x Alicante Boucher) with Ukrainian variety Odessa black (Alicante Bouchet x Cabernet Sauvignon). Duration of production period is 146-155 days. Growth of shoots is strong (2,1-3,0 m). The percentage of productive shoots is more than...

  1. ITER EDA Newsletter. V. 6, no. 9

    International Nuclear Information System (INIS)

    1997-09-01

    This issue of the Newsletter reports on new ITER Home Page and contains a report on the combined workshop of the ITER confinement and transport expert group and of the confinement modeling and database expert group, by D. Boucher, V. Mukhavatov (both ITER JCT), J.G. Cordey, JET Joint Undertaking , M. Wakatani, Kyoto University held at the Max-Planck-Institut for Plasmaphysik, Garching, Germany on September 25 - 30 1997

  2. Atypical Neurophysiology Underlying Episodic and Semantic Memory in Adults with Autism Spectrum Disorder

    OpenAIRE

    Massand, E.; Bowler, D. M.

    2015-01-01

    Individuals with autism spectrum disorder (ASD) show atypicalities in episodic memory (Boucher et al. in Psychological Bulletin, 138 (3), 458-496, 2012). We asked participants to recall the colours of a set of studied line drawings (episodic judgement), or to recognize line drawings alone (semantic judgement). Cycowicz et al. (Journal of Experimental Child Psychology, 65, 171-237, 2001) found early (300 ms onset) posterior old-new event-related potential effects for semantic judgements in typ...

  3. Galerkin Optimal Control

    Science.gov (United States)

    2014-12-01

    MATHEMATICS from the NAVAL POSTGRADUATE SCHOOL December 2014 Randy Boucher Approved By: Wei Kang Professor Chris L. Frenzen Professor Department of...also to the members of my committee: Dr. Frank Giraldo, Dr. Chris Frenzen, Dr. Mike Ross and Dr. Arthur Krener. Each of you planted great seeds of...Louis Lions, Universite Paris, Paris, France, Oct. 2005. [80] J. R. Higgins , Completeness and Basis Properties of Sets of Special Functions. Cam

  4. Thought and Language in Cognitive Science

    Directory of Open Access Journals (Sweden)

    Destéfano, Mariela

    2012-01-01

    Full Text Available In cognitive science, the discussion about the relations between language and thought is very heterogeneous. It involves developments on linguistics, philosophy, psychology, etc. Carruthers and Boucher (1998 identify different criteria that would organize the diversity of positions about language and thought assumed in linguistics, philosophy and psychology. One of them is the constitution thesis (CT, which establishes that language is constitutively involved in thought. In this paper I would like to show some problems of CT in order to understand the relation between language and thought in cognitive science.

  5. (Microphytobenthic potential primary production of a mudflat in north Brittany: Vertical stratification)

    Digital Repository Service at National Institute of Oceanography (India)

    Riaux-Gobin, C.; Wafar, M.V.M.; Klein, B.

    montre des reper- cussions directes sur l’evolution des peuplements de sites cornparables (Pace et. al., 1979 et Branch & Branch, 1980 in Sundbtick, 1983; Davis & Lee, 1983 in Nienhuis & De Bree, 1984). Au Dourduff la microfaune et la meiofaune sont... rempli de frustules (G. Boucher, comm. pers.); le role de la meiofaune n’est done pas a negliger (Montagna, 1984; Admiraal et. al., 1983). La macrofaune, quant a elle, est 226 C. RIAUX-GOBIN ET AL Nbre micropbytes 300 200 100 0 PPP ’ -0 2.0 L,O 6.0 I...

  6. Migración Internacional, Remesas y Distribución del Ingreso: el Caso de Tarímbaro Michoacán

    OpenAIRE

    Renato Salas Alfaro

    2009-01-01

    Este trabajo contrasta la hipótesis de que en las comunidades rurales con arraigada historia migratoria, las remesas contribuyen a mejorar la distribución del ingreso (Stark, Taylor and Yitzhaki, 1986; Taylor, Mora, Adams and López, 2005; Barham and Boucher, 1998). El estudio se realizó en la cabecera municipal de Tarímbaro Michoacán, comunidad que registra una tradición migratoria sostenida por lo menos desde el programa bracero. La información sobre los ingresos y sus fuentes se obtuv...

  7. Perspectives on Personal Pronoun Reversal in Children with ASD: A Critical Review

    Directory of Open Access Journals (Sweden)

    David Brehme

    2014-03-01

    Full Text Available Personal pronoun reversal (PPR, characterised by inverse use of personal pronouns (typically first and second person is a hallmark of an autism spectrum disorder diagnosis (ASD; American Psychiatric Association, 2013. This literature review examines different theories accounting for the occurrence of PPR, in particular Kanner’s (1943 original view of PPR as echolalia, PPR as a result of impaired understanding of discourse roles (e.g. Tager-Flusberg, 1994, and PPR due to impaired theory of mind (Boucher, 2003. These existing theories are critiqued as overly simplistic, and the review argues that more complex theories are required to adequately explain the available evidence on PPR.

  8. 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...

  9. 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...

  10. Chandra Snapshot Spectral Imaging of Comets C/2001 Q4 (NEAT) and C/2002 T7 (LINEAR)

    Science.gov (United States)

    Lisse, Carey

    2003-09-01

    The highly favorable perigee passage of the very bright comets C/2001 Q4 (NEAT) and C/2002 T7 (LINEAR) in late May 2004 provides an opportunity to study cometary x-ray emission in conjunction with the new CHIPS spectroscopic mission. In 10 ksec of on-target time for each comet, ACIS-S will obtain snapshot images of the comets in the heart of the CHIPS 0.05 0.150 keV spectroscopic monitoring period in late-May 2004. The combined observations have the potential of directly detecting for the first time the ultra-soft emission due to Mg, S, Si, and Fe predicted by McCammon et al. (2002) from soft x-ray background measurements and by Kharchenko et al. (2000, 2003) from models of solar wind minor ion charge exchange emission. New work by Wegmann, Dennerl, and Lisse (2004) allows a determination of the neutral gas production rate from the spatial scale of the emission, and an independent determination of the solar wind minor ion flux density using the x-ray surface brightness.

  11. DE L’IRRATIONNEL AU RATIONNEL : QUAND LES ANIMAUX TIENNENT LE DISCOURS DE LA VÉRITÉ AUX HOMMES / FROM NON-RATIONALE TO RATIONALE: WHEN ANIMALS POSSESS TRUTH SPEECH TO HUMAN BEINGS / DE LA IRAŢIONAL LA RAŢIONAL: CÂND ANIMALELE DEŢIN DISCURSUL ADEVĂRULUI ÎN FAŢA FIINŢELOR UMANE

    Directory of Open Access Journals (Sweden)

    Yao Lambert Konan

    2013-11-01

    Full Text Available Cette étude, qui s’est intéressée à la figuration faunesque dans les contes de l’Afrique noire, a saisi l’animal en tant que symbole thématique et force agissante. Le bestiaire dans l’univers narratif des textes oraux assume une triple fonctionnalité : véhiculer les idéaux de la société, indiquer les repères de conduite à tenir dans telle ou telle circonstance et se conformer aux normes communautaires. La symbolisation animale permet de déboucher sur la sagesse humaine, élément fondamental de la paix sociale.

  12. Mise au point d'un protocole de test de vélocimètres ultrasonores à effet Doppler

    OpenAIRE

    LARRARTE, F; BOUTAMAR, O; JOANNIS, C

    2001-01-01

    Les vélocimètres ultrasonores à effet Doppler fournissent une mesure globale d'une grandeur réputée représentative de la vitesse de l'écoulement. Afin de mieux appréhender les relations entre cette grandeur mesurée et la vitesse, et de déboucher sur une mesure précise du débit, il est nécessaire de connaître des caractéristiques fonctionnelles des capteurs : volume de mesure, pondération des échos provenant de différentes zones de ce volume. Un protocole a donc été développé pour mesurer ces ...

  13. Distant Relations

    DEFF Research Database (Denmark)

    Søndergaard, Morten

    2011-01-01

    Art EntrepreneurshipIvo Zander Mikael Scherdin This project is funded and sponsored by the Knowledge Foundation, the Bank of Sweden Tercentenary Foundation, and the Department of Business Studies, Uppsala University2008-2009This cutting edge project asks what art and artistic processes can...... recognition among creative individuals, similarities and differences between artists and entrepreneurs, the survival and failure of new art initiatives, the globalization of the art arena, and policies for maintaining a dynamic art arena. Publications: The collective findings from the project will appear...... in a book published by Edward Elgar. The preliminary chapters include: Introduction (Mikael Scherdin and Ivo Zander) The new and the challenge of the market or the non-instrumental function of creation (Maria Bonnafous-Boucher, Raphaël Cuir, and Marc Partouche) Today's novelty is yesterday's garbage...

  14. Developing a Betel Quid Cessation Program on the Island of Guam.

    Science.gov (United States)

    Moss, John; Kawamoto, Crissy; Pokhrel, Pallav; Paulino, Yvette; Herzog, Thaddeus

    2015-01-01

    Betel quid is a psychoactive drug preparation typically made up of a combination of areca quid, slaked lime, piper betel leaf and tobacco. It is the fourth most commonly consumed drug in the world with global use concentrated in the Asia-Pacific region (Boucher and Mannan, 2002; Warnakulasuriya and Peters, 2002). The International Agency for Research on Cancer has classified betel quid as a Group 1 carcinogen (IARC, 2004; Lin et al., 2006), and its use has been associated with oral and oropharyngeal cancer, oral lesions, oral leukoplakia, submucous fibrosis, gum disease, and cancer of the pharynx and esophagus (IARC, 2004; Oakley et al., 2005; Shah et al., 2002; Warnakulasuriya, 2002). This paper reports on the feasibility of an innovative betel quid cessation program carried on the U.S. territory of Guam, and is the first of its kind. The program is described, along with the challenges encountered during the implementation process.

  15. Oxygen fugacity and piston cylinder capsule assemblies

    Science.gov (United States)

    Jakobsson, S.

    2011-12-01

    A double capsule assembly designed to control oxygen fugacity in piston cylinder experiments has been tested at 1200 °C and 10 kbar. The assembly consists of an outer Pt-capsule containing a solid buffer (Ni-NiO or Co-CoO plus H2O) and an inner AuPd-capsule containing the sample, H2O and a Pt-wire. To prevent direct contact with the buffer phases the AuPd-capsule is embedded in finely ground Al2O3 along with some coarser, fractured Al2O3 facilitating fluid inclusion formation. No water loss is observed in the sample even after 48 hrs but a slight increase in water content is observed in longer duration runs due to oxygen and hydrogen diffusion into the AuPd-capsule. Carbon from the furnace also diffuses through the outer Pt-capsule but reacts with H2O in the outer capsule to form CO2 and never reaches the inner capsule. Oxygen fugacity of runs in equilibrium with the Ni-NiO and Co-CoO buffers was measured by analyzing the Fe content of the Pt-wire in the sample1 and by analyzing Fe dissolved in the AuPd capsule2. The second method gives values that are in good agreement with established buffer whereas results from the first method are one half to one log units higher than the established values. References 1. E. Medard, C. A. McCammon, J. A. Barr, T. L. Grove, Am. Mineral. 93, 1838 (2008). 2. J. Barr, T. Grove, Contrib. Mineral. Petrol. 160, 631 (2010)

  16. A self-consistent phase-field approach to implicit solvation of charged molecules with Poisson–Boltzmann electrostatics

    Science.gov (United States)

    Sun, Hui; Wen, Jiayi; Zhao, Yanxiang; Li, Bo; McCammon, J. Andrew

    2015-01-01

    Dielectric boundary based implicit-solvent models provide efficient descriptions of coarse-grained effects, particularly the electrostatic effect, of aqueous solvent. Recent years have seen the initial success of a new such model, variational implicit-solvent model (VISM) [Dzubiella, Swanson, and McCammon Phys. Rev. Lett. 96, 087802 (2006) and J. Chem. Phys. 124, 084905 (2006)], in capturing multiple dry and wet hydration states, describing the subtle electrostatic effect in hydrophobic interactions, and providing qualitatively good estimates of solvation free energies. Here, we develop a phase-field VISM to the solvation of charged molecules in aqueous solvent to include more flexibility. In this approach, a stable equilibrium molecular system is described by a phase field that takes one constant value in the solute region and a different constant value in the solvent region, and smoothly changes its value on a thin transition layer representing a smeared solute-solvent interface or dielectric boundary. Such a phase field minimizes an effective solvation free-energy functional that consists of the solute-solvent interfacial energy, solute-solvent van der Waals interaction energy, and electrostatic free energy described by the Poisson–Boltzmann theory. We apply our model and methods to the solvation of single ions, two parallel plates, and protein complexes BphC and p53/MDM2 to demonstrate the capability and efficiency of our approach at different levels. With a diffuse dielectric boundary, our new approach can describe the dielectric asymmetry in the solute-solvent interfacial region. Our theory is developed based on rigorous mathematical studies and is also connected to the Lum–Chandler–Weeks theory (1999). We discuss these connections and possible extensions of our theory and methods. PMID:26723595

  17. A self-consistent phase-field approach to implicit solvation of charged molecules with Poisson-Boltzmann electrostatics.

    Science.gov (United States)

    Sun, Hui; Wen, Jiayi; Zhao, Yanxiang; Li, Bo; McCammon, J Andrew

    2015-12-28

    Dielectric boundary based implicit-solvent models provide efficient descriptions of coarse-grained effects, particularly the electrostatic effect, of aqueous solvent. Recent years have seen the initial success of a new such model, variational implicit-solvent model (VISM) [Dzubiella, Swanson, and McCammon Phys. Rev. Lett. 96, 087802 (2006) and J. Chem. Phys. 124, 084905 (2006)], in capturing multiple dry and wet hydration states, describing the subtle electrostatic effect in hydrophobic interactions, and providing qualitatively good estimates of solvation free energies. Here, we develop a phase-field VISM to the solvation of charged molecules in aqueous solvent to include more flexibility. In this approach, a stable equilibrium molecular system is described by a phase field that takes one constant value in the solute region and a different constant value in the solvent region, and smoothly changes its value on a thin transition layer representing a smeared solute-solvent interface or dielectric boundary. Such a phase field minimizes an effective solvation free-energy functional that consists of the solute-solvent interfacial energy, solute-solvent van der Waals interaction energy, and electrostatic free energy described by the Poisson-Boltzmann theory. We apply our model and methods to the solvation of single ions, two parallel plates, and protein complexes BphC and p53/MDM2 to demonstrate the capability and efficiency of our approach at different levels. With a diffuse dielectric boundary, our new approach can describe the dielectric asymmetry in the solute-solvent interfacial region. Our theory is developed based on rigorous mathematical studies and is also connected to the Lum-Chandler-Weeks theory (1999). We discuss these connections and possible extensions of our theory and methods.

  18. Sensitivity of aerosol indirect forcing and autoconversion to cloud droplet parameterization: an assessment with the NASA Global Modeling Initiative.

    Science.gov (United States)

    Sotiropoulou, R. P.; Meshkhidze, N.; Nenes, A.

    2006-12-01

    The aerosol indirect forcing is one of the largest sources of uncertainty in assessments of anthropogenic climate change [IPCC, 2001]. Much of this uncertainty arises from the approach used for linking cloud droplet number concentration (CDNC) to precursor aerosol. Global Climate Models (GCM) use a wide range of cloud droplet activation mechanisms ranging from empirical [Boucher and Lohmann, 1995] to detailed physically- based formulations [e.g., Abdul-Razzak and Ghan, 2000; Fountoukis and Nenes, 2005]. The objective of this study is to assess the uncertainties in indirect forcing and autoconversion of cloud water to rain caused by the application of different cloud droplet parameterization mechanisms; this is an important step towards constraining the aerosol indirect effects (AIE). Here we estimate the uncertainty in indirect forcing and autoconversion rate using the NASA Global Model Initiative (GMI). The GMI allows easy interchange of meteorological fields, chemical mechanisms and the aerosol microphysical packages. Therefore, it is an ideal tool for assessing the effect of different parameters on aerosol indirect forcing. The aerosol module includes primary emissions, chemical production of sulfate in clear air and in-cloud aqueous phase, gravitational sedimentation, dry deposition, wet scavenging in and below clouds, and hygroscopic growth. Model inputs include SO2 (fossil fuel and natural), black carbon (BC), organic carbon (OC), mineral dust and sea salt. The meteorological data used in this work were taken from the NASA Data Assimilation Office (DAO) and two different GCMs: the NASA GEOS4 finite volume GCM (FVGCM) and the Goddard Institute for Space Studies version II' (GISS II') GCM. Simulations were carried out for "present day" and "preindustrial" emissions using different meteorological fields (i.e. DAO, FVGCM, GISS II'); cloud droplet number concentration is computed from the correlations of Boucher and Lohmann [1995], Abdul-Razzak and Ghan [2000

  19. From Exquisite to Transgressive Moderns? The Goncourt's "Decadent" Eighteenth-Century Art Revival

    Directory of Open Access Journals (Sweden)

    Juliet Simpson

    2012-03-01

    Full Text Available As avid collectors of French eighteenth-century art, the Goncourts' contribution to its nineteenth-century history is well-known. This article, however, explores a less welldocumented aspect of their L'Art du dix-huitième siècle (1858-1875: that is, its articulation of an art of latency and decadence prior to the term's fin-de-siècle association with explicitly transgressive cultures of modernity. Indeed, the paper argues that the Goncourts were amongst the first writers of their age to use the art of an age linked with political and cultural decay, to foreground latently decadent tendencies in mid nineteenth-century French art and culture. In so doing, they were to produce a paradigm of "decadence" defining not decline, but a new and highly modern artistry of heightened aesthetic expression. The article will explore these ideas in two principal ways. First, it considers neglected relations between the Goncourts' and Taine's ideas on art, and specifically, the Goncourts' use and exploitation of Tainean indicators of decadence, broached in Taine's study on La Fontaine (1861, for opposing artistically and culturally productive ends. Second it develops these ideas in a discussion of the three artist-studies in L'Art du dixhuitième siècle in which the Goncourts' developing theme of "decadence" is articulated with especial force and prescience: in "Boucher" (1861, "Greuze" (1863 and ‘Fragonard' (1864. These, as the paper argues, suggest particularly defined channels for the Goncourts' engagement with key Tainean ideas of the period, offering related opportunities for their promotion of corruption, vice and decline as aesthetically and culturally compelling. In repositioning Boucher's sensualism as "indécence", Greuze's "innocence" as "perverse" and Fragonard's Italianate expressivity as "impure", the Goncourts not only situate their "histories" in the vanguard of a new, transgressive aesthetic understanding of eighteenth-century art, they re

  20. Suppression of Transient Events by Levitation (STABLE): Results From the USML-2 Mission. Experiment 38

    Science.gov (United States)

    Nurre, Gerald S.; Edberg, Donald L.

    1998-01-01

    Microgravity science payloads can be extremely sensitive to vibrations from machinery, acoustics, ventilation, and crew activity. Suppression of Transient Acceleration by Levitation (STABLE) is an active vibration isolation system designed to protect payloads from these disturbances. This paper gives an account of results from the flight demonstration of the STABLE microgravity isolation system, which was developed and successfully flight tested in orbit during USML-2, with the participation of Astronaut Fred Leslie. Following a very brief description of the operational principles, the hardware and software design, and performance criteria, results of the analysis of measured flight data are presented to provide an evaluation of system performance parameters, including acceleration attenuation, assessment of sway space, system power consumption, and other factors critical to the performance of an isolation system. Lessons learned and potential design improvements and evolutions are discussed. Data reduction by Robert Boucher of McDonnell Douglas Aerospace (MDA) was substantially assisted by Kenneth Hrovat of Tal-Cut, Inc., under support from National Aeronautics and Space Administration/Lewis Research Center (LeRC), Cleveland, OH.

  1. The new "Jardin de Capucine" crèche brings a breath of fresh air for young CERN parents

    CERN Multimedia

    HR Department

    2011-01-01

    On 19 January 2011, CERN's Director-General, Rolf Heuer, signed an agreement with the company "Le Jardin de Zébulon" for the provision of 40 places at the "Jardin de Capucine", a new private crèche due to open this autumn.   In 2008, the "Jardin de Zébulon", a private bilingual crèche for children aged 1 to 4, was opened by Ariane Boucheron at the Technoparc industrial estate in Saint-Genis Pouilly (France). The following year, the number of places was increased from 20 to 37 to meet demand. The "Jardin de Zébulon" has taken in a number of children of CERN personnel ever since it was created. With no let-up in the demand for new crèche places, Ariane Boucher is currently engaged in the construction of a new centre, the "Jardin de Capucine", next-door to the existing crèche. Forty places at the new crèche will...

  2. Renal colic and childbirth pain: female experience versus male perception

    Directory of Open Access Journals (Sweden)

    Miah S

    2017-07-01

    Full Text Available Saiful Miah,1,2 Charlotte Gunner,3 Lucy Clayton,4 Suresh Venugopal,5 Nigel R Boucher,5 Bo Parys61Division of Surgery and Interventional Science, University College London, London, UK; 2Urology Department, Charing Cross Hospital, Imperial College Healthcare NHS Trust, London, UK; 3Urology Department, Raigmore Hospital, Inverness, UK; 4Psychiatry Department, Highbury Hospital, Nottingham, UK; 5Urology Department, Chesterfield Royal Infirmary, Chesterfield, UK; 6Urology Department, Rotherham General Hospital, Rotherham, UKIntroductionRenal colic is often described by patients as the worst pain ever experienced.1 Pain during childbirth is also similarly described.2 To date, no study has comparatively evaluated the pain of renal colic to that of childbirth in female patients who have experienced both. Furthermore, no such study has evaluated the perception that men with renal colic have with respect to the pain experienced during childbirth. Here we present our cross-sectional observational study to address these questions. The primary objectives of our study were to answer these questions and highlight the severity of renal colic which is not always faced and treated aggressively.  

  3. A combined analysis of the Frost Multidimensional Perfectionism Scale (FMPS), Child and Adolescent Perfectionism Scale (CAPS), and Almost Perfect Scale-Revised (APS-R): Different perfectionist profiles in adolescent high school students.

    Science.gov (United States)

    Sironic, Amanda; Reeve, Robert A

    2015-12-01

    To investigate differences and similarities in the dimensional constructs of the Frost Multidimensional Perfectionism Scale (FMPS; Frost, Marten, Lahart, & Rosenblate, 1990), Child and Adolescent Perfectionism Scale (CAPS; Flett, Hewitt, Boucher, Davidson, & Munro, 2000), and Almost Perfect Scale-Revised (APS-R; Slaney, Rice, Mobley, Trippi, & Ashby, 2001), 938 high school students completed the 3 perfectionism questionnaires, as well as the Depression Anxiety Stress Scales (DASS; Lovibond & Lovibond, 1995). Preliminary analyses revealed commonly observed factor structures for each perfectionism questionnaire. Exploratory factor analysis of item responses from the questionnaires (combined) yielded a 4-factor solution (factors were labeled High Personal Standards, Concerns, Doubts and Discrepancy, Externally Motivated Perfectionism, and Organization and Order). A latent class analysis of individuals' mean ratings on each of the 4 factors yielded a 6-class solution. Three of the 6 classes represented perfectionist subgroups (labeled adaptive perfectionist, externally motivated maladaptive perfectionist, and mixed maladaptive perfectionist), and 3 represented nonperfectionist subgroups (labeled nonperfectionist A, nonperfectionist B, and order and organization nonperfectionist). Each of the 6 subgroups was meaningfully associated with the DASS. Findings showed that 3 out of 10 students were classified as maladaptive perfectionists, and maladaptive perfectionists were more prevalent than adaptive perfectionists. In sum, it is evident that combined ratings from the FMPS, CAPS, and APS-R offer a meaningful characterization of perfectionism. (c) 2015 APA, all rights reserved).

  4. Learning to save lives!

    CERN Document Server

    2003-01-01

    They're all around you and watch over you, but you won't be aware of them unless you look closely at their office doors. There are 308 of them and they have all been given 12 hours of training with the CERN Fire Brigade. Who are they? Quite simply, those who could one day save your life at work, the CERN first-aiders. First-aiders are recruited on a volunteer basis. "Training is in groups of 10 to 12 people and a lot of emphasis is placed on the practical to ensure that they remember the life-saving techniques we show them", explains Patrick Berlinghi, a CERN first-aid instructor from TIS Division. He is looking forward to the arrival of four new instructors, which will bring the total number to twelve (eleven firemen and one member of the Medical Service). "The new instructors were trained at CERN from 16 to 24 May by Marie-Christine Boucher Da Ros (a member of the Commission Pédagogie de l'Observatoire National Français du Secourisme, the education commission of France's national first-aid body). This in...

  5. Sustained Local Diversity of Vibrio cholerae O1 Biotypes in a Previously Cholera-Free Country.

    Science.gov (United States)

    Boucher, Yan

    2016-05-03

    Although the current cholera pandemic can trace its origin to a specific time and place, many variants of Vibrio cholerae have caused this disease over the last 50 years. The relative clinical importance and geographical distribution of these variants have changed with time, but most remain in circulation. Some countries, such as Mexico and Haiti, had escaped the current pandemic, until large epidemics struck them in 1991 and 2010, respectively. Cholera has been endemic in these countries ever since. A recent retrospective study in mBio presents the results of more than 3 decades of V. cholerae monitoring from environmental and clinical sources in Mexico (S. Y. Choi et al., mBio 7:e02160-15, 2016, http://dx.doi.org/10.1128/mBio.02160-15). It reveals that multiple V. cholerae variants, including classical strains from the previous pandemic, as well as completely novel biotypes, have been circulating in Mexico. This discovery has important implications for the epidemiology and evolution of V. cholerae. Copyright © 2016 Boucher.

  6. Preliminary chronostratigraphy of the Tetagouche and Fournier groups in northern New Brunswick

    International Nuclear Information System (INIS)

    Sullivan, R.W.; VanStaal, C.R.

    1996-01-01

    Seven U-Pb zircon ages of volcanic rocks from northern New Brunswick are reported and a preliminary stratigraphy of the middle Ordovician Tetagouche and Fournier groups is presented. Deposition of the Tetagouche Group started with calcareous rocks of the Vallee Lourdes Formation in the Late Arenig (>470 Ma). Quartz- and feldspar-phyric felsic volcanic rocks of the immediately overlying Nepisiquit Falls Formation yielded U-Pb zircon ages between ca. 471 and 469 Ma. These volcanic rocks are time stratigraphic equivalents of the feldspar-phyric dacites of the Spruce Lake Formation, which yielded a U-Pb zircon age of ca. 470 Ma, and tholeiitic and alkalic pillow basalts of the structurally overlying Canoe Landing Lake Formation. The final phase of rhyolitic to dacitic volcanism is marked by the emplacement of distinct quartz- and feldspar-phyric dacitic porphyries at ca. 465 Ma, thus limiting silicic volcanism to the Late Arenig and llanvim. During the Ilandeilo and Caradoc (ca. 464-457 Ma) volcanic activity in the Tetagouche Group was characterized by extrusion of alkali basalts and minor comendites, interlayered with dark shales and siltstones of the Boucher Brook Formation. Oceanic crust of the Fournier Group was also formed during this period. (author). 29 refs., 1 tab., 10 figs

  7. Migración Internacional, Remesas y Distribución del Ingreso: el Caso de Tarímbaro Michoacán

    Directory of Open Access Journals (Sweden)

    Renato Salas Alfaro

    2009-06-01

    Full Text Available Este trabajo contrasta la hipótesis de que en las comunidades rurales con arraigada historia migratoria, las remesas contribuyen a mejorar la distribución del ingreso (Stark, Taylor and Yitzhaki, 1986; Taylor, Mora, Adams and López, 2005; Barham and Boucher, 1998. El estudio se realizó en la cabecera municipal de Tarímbaro Michoacán, comunidad que registra una tradición migratoria sostenida por lo menos desde el programa bracero. La información sobre los ingresos y sus fuentes se obtuvo aplicando una etnoencuesta a una muestra aleatoria de hogares; incluyendo aquellos con y sin migración. Mediante la descomposición del Coeficiente de Gini (Lerman and Yitzhaki, 1985 se determinó la proporción que tiene cada fuente de ingreso sobre el valor de la distribución del ingreso total. Los resultados muestran que las remesas internacionales representan casi un tercio de los ingresos totales de la comunidad y aunque son los hogares de mayores ingresos quienes las están recibiendo en mayor proporción; la evidencia sugiere que efectivamente éstas contribuyen a mejorar la distribución del ingreso que estructuralmente tiene está comunidad.

  8. Preliminary chronostratigraphy of the Tetagouche and Fournier groups in northern New Brunswick

    Energy Technology Data Exchange (ETDEWEB)

    Sullivan, R W; VanStaal, C R [Geological Survey of Canada, Ottawa, ON (Canada)

    1997-12-31

    Seven U-Pb zircon ages of volcanic rocks from northern New Brunswick are reported and a preliminary stratigraphy of the middle Ordovician Tetagouche and Fournier groups is presented. Deposition of the Tetagouche Group started with calcareous rocks of the Vallee Lourdes Formation in the Late Arenig (>470 Ma). Quartz- and feldspar-phyric felsic volcanic rocks of the immediately overlying Nepisiquit Falls Formation yielded U-Pb zircon ages between ca. 471 and 469 Ma. These volcanic rocks are time stratigraphic equivalents of the feldspar-phyric dacites of the Spruce Lake Formation, which yielded a U-Pb zircon age of ca. 470 Ma, and tholeiitic and alkalic pillow basalts of the structurally overlying Canoe Landing Lake Formation. The final phase of rhyolitic to dacitic volcanism is marked by the emplacement of distinct quartz- and feldspar-phyric dacitic porphyries at ca. 465 Ma, thus limiting silicic volcanism to the Late Arenig and llanvim. During the Ilandeilo and Caradoc (ca. 464-457 Ma) volcanic activity in the Tetagouche Group was characterized by extrusion of alkali basalts and minor comendites, interlayered with dark shales and siltstones of the Boucher Brook Formation. Oceanic crust of the Fournier Group was also formed during this period. (author). 29 refs., 1 tab., 10 figs.

  9. Experimental determination of dissolved CO2 content in nominally anhydrous andesitic melts at graphite/diamond saturation - Remobilization of deeply subducted reduced carbon via partial melts of MORB-like eclogite

    Science.gov (United States)

    Eguchi, J.; Dasgupta, R.

    2015-12-01

    coming from subducted crust and investigate the possible role this process may play in the deep carbon cycle. [1] Dasgupta (2013) RiMG. [2] Shirey, et al. (2013) RiMG. [3] Frost & McCammon (2008) Ann Rev Earth Plan Sci. [4] Stagno, et al. (2015) CMP. [5] Kiseeva, et al. (2012) JPet. [6] Mallik & Dasgupta (2014) G3. [7] Spandler, et al. (2008) JPet.

  10. A Methane-Rich Early Mars: Implications for Habitability and the Emergence of Life

    Science.gov (United States)

    Wong, Michael L.; Friedson, Andrew James; Willacy, Karen; Shia, Run-Lie; Yung, Yuk; Russell, Michael J.

    2017-10-01

    We investigate the radiation and chemistry of a ~4.0 Ga, CH4-rich martian atmosphere in an effort to assess whether or not Mars was once habitable and suitable for the emergence of life. High atmospheric CH4 may be consistent with a mantle that does not reach the requisite pressure (24 GPa) and temperature (1900 K) for the silicate spinel-to-perovskite transition (Dale et al., 2012; McCammon, 1997; Wadhwa, 2001; Wood et al., 2006). Impact degassing from chondritic material can also contribute substantial amounts of CH4 to the atmosphere (Schaefer and Fegley, 2007). CH4 plays an important role in atmospheric radiation. Atmospheric models have demonstrated that a purely CO2 atmosphere, even one as massive as 7 bars, is incapable of heating Mars above an annual-mean surface temperature of 273 K (Forget et al., 2013), although recent studies show that recurring wet states could have been induced in an H2-rich atmosphere (Batalha et al., 2015, 2016). We show that CH4 alone is insufficient to warm early Mars above freezing—in fact it produces an anti-greenhouse effect—but it substantially raises middle atmospheric temperatures. We determine whether or not such high temperatures could prolong the photochemical lifetime of SO2, another potent greenhouse gas. We use RC1D, a non-gray 1-D radiative-convective equilibrium model, to calculate the atmospheric thermal structure consistent with the radiative heating and cooling associated with the composition computed at each chemical model time step. KINETICS, the Caltech/JPL chemistry transport model (e.g. Nair et al., 1994), determines the chemical makeup of the atmosphere, evaluating steady-state chemical profiles and the synthesis of astrobiologically relevant molecules. H2O is in vapor pressure equilibrium at the surface. We consider conditions forced by the faint-young Sun’s spectrum and luminosity. By coupling RC1D and KINETICS, we are able to paint a more realistic picture of Mars’s early climate, calculating the

  11. Solar-powered Gossamer Penguin in flight

    Science.gov (United States)

    1979-01-01

    Gossamer Penguin in flight above Rogers Dry Lakebed at Edwards, California, showing the solar panel perpendicular to the wing and facing the sun. Background The first flight of a solar-powered aircraft took place on November 4, 1974, when the remotely controlled Sunrise II, designed by Robert J. Boucher of AstroFlight, Inc., flew following a launch from a catapult. Following this event, AeroVironment, Inc. (founded in 1971 by the ultra-light airplane innovator--Dr. Paul MacCready) took on a more ambitious project to design a human-piloted, solar-powered aircraft. The firm initially took the human-powered Gossamer Albatross II and scaled it down to three-quarters of its previous size for solar-powered flight with a human pilot controlling it. This was more easily done because in early 1980 the Gossamer Albatross had participated in a flight research program at NASA Dryden in a program conducted jointly by the Langley and Dryden research centers. Some of the flights were conducted using a small electric motor for power. Gossamer Penguin The scaled-down aircraft was designated the Gossamer Penguin. It had a 71-foot wingspan compared with the 96-foot span of the Gossamer Albatross. Weighing only 68 pounds without a pilot, it had a low power requirement and thus was an excellent test bed for solar power. AstroFlight, Inc., of Venice, Calif., provided the power plant for the Gossamer Penguin, an Astro-40 electric motor. Robert Boucher, designer of the Sunrise II, served as a key consultant for both this aircraft and the Solar Challenger. The power source for the initial flights of the Gossamer Penguin consisted of 28 nickel-cadmium batteries, replaced for the solar-powered flights by a panel of 3,920 solar cells capable of producing 541 Watts of power. The battery-powered flights took place at Shafter Airport near Bakersfield, Calif. Dr. Paul MacCready's son Marshall, who was 13 years old and weighed roughly 80 pounds, served as the initial pilot for these flights to

  12. ["Les Impatients": expression through art].

    Science.gov (United States)

    Lamontagne, Céline; Palardy, Lorraine

    2015-01-01

    The organization called "Les Impatients" was founded in 1992. Using a unique model, Les Impatients welcomes those with mental health issues who would like to express themselves through art. Les Impatients offers free creative workshops and encourages exchanges with the community through the sharing of its participants' creations. The name Les Impatients reinforces the idea that the organization does not consider those attending its workshops as patients, but rather creators who are eager to heal, develop their craft and find their place in society. The participants contribute to the collective objective of breaking down the stigma that surrounds mental illness.Les Impatients collaborates with various mental health organizations in Quebec, such as the Institut universitaire en santé mentale de Montréal (IUSMM) affiliated to the Université de Montréal, Douglas Mental Health University Institute (DMHUI), the Centre de santé et services sociaux Drummond (CSSS Drummond) and the Centre de santé et services sociaux Pierre-Boucher (CSSS Pierre-Boucher). Les Impatients offers more than 48 workshops in eight different locations to around 450 participants each week.Dissemination activities, remarkable events, original projects: Les Impatients stands out through its realizations. Examples are exhibitions, collections of love letters, comic books, CD, concerts, and reading nights. The organization's originality resides in the exploration of the links between the work of the participants and that of professional artists. An illustration of this interest is the annual Parle-moi d'amour auction-exhibition, which has been one of Les Impatients' major events since 1999.As part of its mission, Les Impatients conserves the works of art created by the participants during the workshops. Its collection includes more than 15,000 works of art from Les Impatients as well as pieces donated by collectors of unconventional art, commonly known as "art brut" or "outsider art". The

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

    Directory of Open Access Journals (Sweden)

    Christine Zumello

    2010-03-01

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

  14. Approvisionnement en porcs vifs et viande porcine de la ville de Bobo-Dioulasso (Burkina Faso

    Directory of Open Access Journals (Sweden)

    Kiendrebeogo Timbilfou

    2012-12-01

    Full Text Available Résumé : L’étude a évalué l’approvisionnement en porcs et viande de porc de la ville de Bobo-Dioulasso (Burkina Faso. Les données ont été collectées par enquête transversale et rétrospective  auprès de 623 éleveurs en 2003, de 34 commerçants/transformateurs en 2005 et 2006 et auprès de l’Abattoir Frigorifique de Bobo-Dioulasso (AFB en 2009. Les résultats ont montré que les porcs provenaient des élevages urbains et périurbains (38% et des villages au-delà de la périphérie de Bobo-Dioulasso (62%. La production de viande de porc à l’AFB s’est accrue entre 2001 et 2006. Les carcasses, les poumons et le foie ont été surtout saisis aux motifs de tuberculose, de congestions et de cysticerques. Sur 982kg de viande traitée quotidiennement par les acteurs (35, 80% l’a été par des rôtisseurs (88,24% des acteurs, 17% par des charcutiers (5,88%, 2% par les bouchers (2,94% et 1% par les restaurateurs (2,94%. Des études complémentaires sur la rémunération de la production et de la commercialisation et sur la qualité des produits (porcs, viande et produits transformés seront nécessaires pour impulser l’accroissement de la part des viandes porcines dans l’approvisionnement de la ville de Bobo-Dioulasso Mots clés : Approvisionnement, porcs,  viande de porc, Ville de Bobo-Dioulasso

  15. NOUVELLES PERSPECTIVES EN ONCOLOGIE MEDICALE MEDECINE MOLECULAIRE ET SES PERSPECTIVES

    Directory of Open Access Journals (Sweden)

    Jean-Yves BLAY

    2017-05-01

    Full Text Available La médecine  moléculaire du cancer  s’appuie sur l’identification d’anomalies génomique de  l’ADN des cellules tumorales, permettant de guider le traitement des patients, en choisissant des inhibiteurs agissant sur les protéines mutées codées par les gènes mutés. Cependant, on assiste depuis 10 ans à l’émergence très rapide d’un nouveau corpus de connaissance décrivant les anomalies génomiques des cellules cancéreuses au sein des programmes internationaux  comme ICGC ou TCGA, permettant de déboucher sur de nouvelles classifications nosologiques mais démontrant aussi l’extrème  complexité et variabilité clonale des cellules cancéreuses  chez le patient humain. Il s’agit désormais d’utiliser ces données  nouvelles de manière  efficace. Ceci requiert la constitution de plateformes de diagnostic  explorant progressivement avec  une plus grande profondeur  les anomalies moléculaire de chaque patient individuel, et l’organisation de réunions de concertation pluridisciplinaires moléculaire permettant d’intégrer ces données au contexte  clinique et global du patient, et requérant la  contribution  croissante des bio-informaticiens. Ce  court article  fait le point  sur l’évolution de cette médecine moléculaire.

  16. L’influence de l’eugénisme galtonien dans la pensée de Joseph Alois Schumpeter The Influence of Eugenics in Joseph Alois Schumpeter’s theory

    Directory of Open Access Journals (Sweden)

    Fabrice Dannequin

    2012-11-01

    Full Text Available Dans sa théorie du capitalisme, Joseph Alois Schumpeter mobilise l’eugénique, notamment les travaux de Francis Galton. Ce dernier a élaboré une vision hiérarchisée et héréditariste des hommes. Il l’a notamment appliquée à la question de la pauvreté en reprenant les données empiriques de Charles Booth. Schumpeter reprend ces éléments comme socle de l’explication de l’inégalité sociale et dans la construction de sa théorie de l’entrepreneuriat. Les entrepreneurs constituent une élite se démarquant de la masse, en engendrant l’évolution de la société du fait de leurs talents innés. Le capitalisme ne peut déboucher sur la disparition totale de la pauvreté. En effet, les individus biologiquement moins « dotés » sont condamnés à rester au bas de l’échelle sociale.In his theory about capitalism, Joseph Alois Schumpeter uses eugenics, and especially Francis Galton’s work. The former has conceived a hierarchized vision of society, and a hereditary vision of the transmission of talents. He notably applied it to the question of poverty by using Charles Booth’s empirical data. Schumpeter uses these elements both as an explanation of social inequality and as a basis of his theory of entrepreneurship. To him, the entrepreneurs are an elite standing out against the masses since they have the innate talents to generate evolution. Capitalism cannot totally eradicate poverty. Indeed, the least biologically gifted are bound to remain at the bottom of the social ladder.

  17. Selectivity and weed control efficacy of some herbicides applied to sprinkler irrigated rice (Oryza sativa L.)

    Energy Technology Data Exchange (ETDEWEB)

    Cavero, J; Zaragoza, C; Cirujeda, A; Anzalone, A; Faci, J M; Blanco, O

    2011-07-01

    Sprinkler irrigation can reduce the irrigation water needed to grow rice. However, most available information on weed control with herbicides is related to flood irrigated rice because this is the main growing method. Field experiments were conducted at Zaragoza (Spain) during two years to study weed control and tolerance of sprinkler irrigated rice to several herbicides. The main weeds were Atriplex prostrata Boucher ex DC., Cyperus rotundus L., Echinochloa crus-galli (L.) Beauv. and Sonchus oleraceus L. Rice cv Guadiamar was tolerant to preemergence (PRE) application of clomazone at 0.36 kg ha{sup -}1 and oxadiazon at 0.5 kg ha{sup -}1. PRE application of pendimethalin at 1.32 kg ha{sup -}1 combined with clomazone at 0.36 kg ha{sup -}1 decreased rice yield. Postemergence (POST) application of bentazon at 1.6 kg ha{sup -}1 + MCPA at 0.25 kg ha{sup -}1 did not injure rice but POST application of azimsulfuron at 0.025 kg ha{sup -}1 produced visual crop injury. Only treatments that controlled grassy weeds since rice was planted and by more than 80% at harvest time lead to acceptable rice yield (> 5,000 kg ha{sup -}1). Clomazone applied PRE at 0.36 kg ha{sup -}1 provided good control of grassy weeds (> 80%) and the highest rice yield, so it is recommended as a selective and efficacious PRE treatment for weed control of annual weeds in sprinkler irrigated rice. The perennial purple nutsedge was difficult to control at high plant densities (> 150 plants m{sup -}2) and the recommended herbicide is azimsulfuron applied at POST at 0.02 kg ha{sup -}1. (Author) 37 refs.

  18. Nitrogen Compounds in Radiation Chemistry

    International Nuclear Information System (INIS)

    Sims, H.E.; Dey, G.R.; Vaudey, C.E.; Peaucelle, C.; Boucher, J.L.; Toulhoat, N.; Bererd, N.; Koppenol, W.H.; Janata, E.; Dauvois, V.; Durand, D.; Legand, S.; Roujou, J.L.; Doizi, D.; Dannoux, A.; Lamouroux, C.

    2009-01-01

    Water radiolysis in presence of N 2 is probably the topic the most controversy in the field of water radiolysis. It still exists a strong discrepancy between the different reports of ammonia formation by water radiolysis in presence of N 2 and moreover in absence of oxygen there is no agreement on the formation or not of nitrogen oxide like NO 2 - and NO 3 -. These discrepancies come from multiple sources: - the complexity of the reaction mechanisms where nitrogen is involved - the experimental difficulties - and, the irradiation conditions. The aim of the workshop is to capitalize the knowledge needed to go further in simulations and understanding the problems caused (or not) by the presence of nitrogen / water in the environment of radioactive materials. Implications are evident in terms of corrosion, understanding of biological systems and atmospheric chemistry under radiation. Topics covered include experimental and theoretical approaches, application and fundamental researches: - Nitrate and Ammonia in radiation chemistry in nuclear cycle; - NOx in biological systems and atmospheric chemistry; - Formation of Nitrogen compounds in Nuclear installations; - Nitrogen in future power plant projects (Gen4, ITER...) and large particle accelerators. This document gathers the transparencies available for 7 of the presentations given at this workshop. These are: - H.E SIMS: 'Radiation Chemistry of Nitrogen Compounds in Nuclear Power Plant'; - G.R. DEY: 'Nitrogen Compounds Formation in the Radiolysis of Aqueous Solutions'; - C.E. VAUDEY et al.: 'Radiolytic corrosion of nuclear graphite studied with the dedicated gas irradiation cell of IPNL'; - J.L. BOUCHER: 'Roles and biosynthesis of NO in eukaryotes and prokaryotes'; - W.H. KOPPENOL: 'Chemistry of NOx'; - E. JANATA: 'Yield of OH in N 2 O saturated aqueous solution'; - V. DAUVOIS: 'Analytical strategy for the study of radiolysis gases'

  19. Le labyrinthe arabo-musulman dans les romans de Tahar Ben Jelloun (El laberinto árabe-musulmán en las novelas de Tahar Ben Jelloun

    Directory of Open Access Journals (Sweden)

    Virginia Boza Araya

    2015-09-01

    Full Text Available El escritor marroquí Tahar Ben Jelloun reproduce en sus obras la estructura laberíntica de su medina. La circularidad que marca las historias de sus personajes constituye la muralla que protege los misterios, los secretos y los seres. La superposición de composiciones teje, en el interior de esta muralla, callejuelas obscuras que desembocan en la vida de seres cuyo destino fue alienado por los caprichos de la historia. Todo es sombrío: atmósfera, historias, personajes, y estos tan sombríos como la vida de los magrebís cuya identidad ha sido alienada y que están en búsqueda de sus raíces. Tahar Ben Jelloun est un écrivain marocain d’expression française, cependant son œuvre reste foncièrement arabe autant dans la forme que dans le fond. Chaque roman harmonise différentes compositions pour créer le labyrinthe de la culture arabo-musulmane. Son œuvre s’articule, tant au niveau macro que micro, comme une Médina qui est au cœur même de la culture arabe. Chaque histoire constitue une micro cellule (histoire dans l’histoire qui se cache au fond de ses impasses. Elle suit l’itinéraire de ces ruelles étroites et sinueuses, pour déboucher sur d’autres histoires aussi sombres que certains espaces qu’on trouve au détour d’une venelle dans les souks. En fait, la médina est indissociable des récits et d’événements historiques comme le souligne Tahar Ben Jelloun.

  20. Developing a Web Platform to Support a Community of Practice: A Mixed Methods Study in Pediatric Physiotherapy.

    Science.gov (United States)

    Pratte, Gabrielle; Hurtubise, Karen; Rivard, Lisa; Berbari, Jade; Camden, Chantal

    2018-01-01

    Web platforms are increasingly used to support virtual interactions between members of communities of practice (CoP). However, little is known about how to develop these platforms to support the implementation of best practices for health care professionals. The aim of this article is to explore pediatric physiotherapists' (PTs) perspectives regarding the utility and usability of the characteristic of a web platform developed to support virtual communities of practice (vCoP). This study adopted an explanatory sequential mixed methods design. A web platform supporting the interactions of vCoP members was developed for PTs working with children with developmental coordination disorder. Specific strategies and features were created to support the effectiveness of the platform across three domains: social, information-quality, and system-quality factors. Quantitative data were collected from a cross-sectional survey (n = 41) after 5 months of access to the web platform. Descriptive statistics were calculated. Qualitative data were also collected from semistructured interviews (n = 9), which were coded, interpreted, and analyzed by using Boucher's Web Ergonomics Conceptual Framework. The utility of web platform characteristics targeting the three key domain factors were generally perceived positively by PTs. However, web platform usability issues were noted by PTs, including problems with navigation and information retrieval. Web platform aiming to support vCoP should be carefully developed to target potential users' needs. Whenever possible, users should co-construct the web platform with vCoP developers. Moreover, each of the developed characteristics (eg, newsletter, search function) should be evaluated in terms of utility and usability for the users.

  1. Swedish Plectida (Nematoda). Part 4. The genus Leptolaimus de Man, 1876.

    Science.gov (United States)

    Holovachov, Oleksandr; Boström, Sven

    2013-11-25

    Twelve known and nine new species of Leptolaimus are described from bottom sediments collected in marine habitats of Sweden, including the Bothnian Sea and Bothnian Bay, the Baltic Sea proper, Gullmarn Fjord and the Skagerrak. Three of these species have been previously recorded in Sweden while nine are new records for the Swedish fauna. The following known species are redescribed: Leptolaimus papilliger de Man, 1876, L. cupulatus Lorenzen, 1972, L. danicus Jensen, 1978, L. donsi (Allgén, 1946) comb. n., L. mixtus Lorenzen, 1972, L. pellucidus (Southern, 1914) comb. n., L. venustus Lorenzen, 1972, L. lorenzeni (Boucher & de Bovée, 1972) comb. n., L. alatus Vitiello, 1971, L. macer Lorenzen, 1972, L. septempapillatus Platt, 1973, L. elegans (Schuurmans Stekhoven & De Coninck, 1933) Gerlach, 1958. Leptolaimus primus sp. n. is characterised by the 319-472 µm long body; rounded labial region continuous with body contour; cephalic setae 1.5-2.0 µm long; amphid located 7.0-11.5 µm from anterior end; first body pore located 18.5-28.0 µm from anterior end; lateral field originating 35 µm from anterior end; female without supplements, vagina without pars refringens, vulva midventral; male without tubular and with four alveolar supplements, alveolar supplements without sclerotized inner ring; spicules arcuate and 13.5-16.0 µm long. Leptolaimus secundus sp. n. is characterised by the 576-645 µm long body; rounded labial region continuous with body contour; cephalic setae 2.0 µm long; amphid located 6.5-7.0 µm from anterior end; first body pore located 23.0-28.5 µm from anterior end; lateral field originating 18.0-23.0 µm from anterior end; female without supplements, vagina without pars refringens, vulva midventral; male with single tubular and 9-15 alveolar supplements, tubular supplement weakly arcuate with blunt tips, alveolar supplements with sclerotized lining; spicules arcuate and 23.0-26.5 µm long. Leptolaimus tertius sp. n. is characterised by the 576

  2. OPTIMIZATION OF MUD HAMMER DRILLING PERFORMANCE - A PROGRAM TO BENCHMARK THE VIABILITY OF ADVANCED MUD HAMMER DRILLING

    Energy Technology Data Exchange (ETDEWEB)

    Alan Black; Arnis Judzis

    2003-01-01

    Progress during current reporting year 2002 by quarter--Progress during Q1 2002: (1) In accordance to Task 7.0 (D. No.2 Technical Publications) TerraTek, NETL, and the Industry Contributors successfully presented a paper detailing Phase 1 testing results at the February 2002 IADC/SPE Drilling Conference, a prestigious venue for presenting DOE and private sector drilling technology advances. The full reference is as follows: IADC/SPE 74540 ''World's First Benchmarking of Drilling Mud Hammer Performance at Depth Conditions'' authored by Gordon A. Tibbitts, TerraTek; Roy C. Long, US Department of Energy, Brian E. Miller, BP America, Inc.; Arnis Judzis, TerraTek; and Alan D. Black, TerraTek. Gordon Tibbitts, TerraTek, will presented the well-attended paper in February of 2002. The full text of the Mud Hammer paper was included in the last quarterly report. (2) The Phase 2 project planning meeting (Task 6) was held at ExxonMobil's Houston Greenspoint offices on February 22, 2002. In attendance were representatives from TerraTek, DOE, BP, ExxonMobil, PDVSA, Novatek, and SDS Digger Tools. (3) PDVSA has joined the advisory board to this DOE mud hammer project. PDVSA's commitment of cash and in-kind contributions were reported during the last quarter. (4) Strong Industry support remains for the DOE project. Both Andergauge and Smith Tools have expressed an interest in participating in the ''optimization'' phase of the program. The potential for increased testing with additional Industry cash support was discussed at the planning meeting in February 2002. Progress during Q2 2002: (1) Presentation material was provided to the DOE/NETL project manager (Dr. John Rogers) for the DOE exhibit at the 2002 Offshore Technology Conference. (2) Two meeting at Smith International and one at Andergauge in Houston were held to investigate their interest in joining the Mud Hammer Performance study. (3) SDS Digger Tools (Task 3

  3. Clinopyroxenes still trapped in diamonds: high-energy synchrotron X-ray diffraction as a chemical probe

    Science.gov (United States)

    Casati, Nicola; Nestola, Fabrizio; Alvaro, Matteo; Wilhelm, Heribert; Kleppe, Annette; Nimis, Paolo; Harris, Jeffrey W.

    2014-05-01

    radiation at I15 extreme-conditions beamline, Diamond Light Source Ltd. Such approach makes the absorption from the large diamond host nearly negligible (i.e. with a decrease in the mass attenuation coefficient of more than 75% with respect to a conventional laboratory X-ray source for single crystal diffraction) and allows to collect extremely high quality data on the inclusions. The details will be discussed. We thank the Diamond Light Source for beamtime allocation (beamline I15, experiment number EE8754-1). The research was also funded by the ERC Starting Grant 2012 to FN. References Fedortchouk Y., Manghnani M.H., Hushur A., Shiryaev A., Nestola F. (2011) An atomic force microscopy study of diamond dissolution features: The effect of H2O and CO2 in the fluid on diamond morphology. American Mineralogist, 96, 1768-1775. Nestola F., Longo M., McCammon C., Boffa Ballaran T. (2007) Crystal-structure refinement of Na-bearing clinopyroxenes from mantle-derived eclogite xenoliths. American Mineralogist, 92, 1242-1245.

  4. Elemental and Organic Carbon Measurements at the Kosetice Observatory, Czech Republic within EU Projects in 2009-2014

    Science.gov (United States)

    Vana, M.; Holubova, A.; Cech, J.

    2016-12-01

    Carbonaceous aerosol (TC) is a complex mixture of many organics (OC fraction) and elemental carbon (EC). EC is a product of anthropogenic activities, especially incomplete combustion of fossil fuels by transport, heating, power plants, wood and biomass burning and agriculture activities. EC could have larger health impact than other PM constituents (Cassee et al., 2013). Carbonaceous aerosols also play an important role in climate change (Boucher et al., 2013). Kosetice Observatory, operated by the Czech Hydrometeorological Institute has been carrying out long-term air quality monitoring at the background scale the Czech Republic since 1988. Regular EC-OC measurement has been implementing within EU-projects EUSAAR and ACTRIS since 2009. Sampling frequency is every 6th day in fraction PM2,5 on 2 quartz-fibre filters. Since October 2011 the sampling on filters has been implementing behind the denuder catching the organic vapor. Amount of OC on back quartz fiber filter represents positive artifact by measurement without denuder and negative artifact by measurements with denuder. The analytical method is thermal-optical analysis. The samples are analyzed in CHMI Central Laboratories in Prague-Libuš using EC-OC Sunset Lab Dual Analyzer. Charring correction is made by laser transmission monitoring. Slightly decreasing tendency of EC-OC was found in the period under review (2009-2014). The mean annual concentration of total carbon (TC) in PM2,5 was 3,73 µg.m-3. The figure for elemental carbon (0,5 µg.m-3) represents the mean annual ratio of 13% on TC. EC-OC concentrations follow an annual course that reflects their emission levels, i.e. with maximums in winter and minimums in summer. The seasonal variation of EC/TC ratio ranges between 9,6 (summer) - 14,2% (winter). Mean TC ratio on PM2,5 total mass in the period under review was 29%, the highest ratios reached 50%. EC participated on PM2,5 total mass by 3,5% in average. 3D trajectories were used for sector analysis of

  5. Radiative and temperature effects of aerosol simulated by the COSMO-Ru model for different atmospheric conditions and their testing against ground-based measurements and accurate RT simulations

    Science.gov (United States)

    Chubarova, Nataly; Poliukhov, Alexei; Shatunova, Marina; Rivin, Gdali; Becker, Ralf; Muskatel, Harel; Blahak, Ulrich; Kinne, Stefan; Tarasova, Tatiana

    2017-04-01

    We use the operational Russian COSMO-Ru weather forecast model (Ritter and and Geleyn, 1991) with different aerosol input data for the evaluation of radiative and temperature effects of aerosol in different atmospheric conditions. Various aerosol datasets were utilized including Tegen climatology (Tegen et al., 1997), updated Macv2 climatology (Kinne et al., 2013), Tanre climatology (Tanre et al., 1984) as well as the MACC data (Morcrette et al., 2009). For clear sky conditions we compare the radiative effects from the COSMO-Ru model over Moscow (55.7N, 37.5E) and Lindenberg/Falkenberg sites (52.2N, 14.1E) with the results obtained using long-term aerosol measurements. Additional tests of the COSMO RT code were performed against (FC05)-SW model (Tarasova T.A. and Fomin B.A., 2007). The overestimation of about 5-8% of COSMO RT code was obtained. The study of aerosol effect on temperature at 2 meters has revealed the sensitivity of about 0.7-1.1 degree C per 100 W/m2 change in shortwave net radiation due to aerosol variations. We also discuss the radiative impact of urban aerosol properties according to the long-term AERONET measurements in Moscow and Moscow suburb as well as long-term aerosol trends over Moscow from the measurements and Macv2 dataset. References: Kinne, S., O'Donnel D., Stier P., et al., J. Adv. Model. Earth Syst., 5, 704-740, 2013. Morcrette J.-J.,O. Boucher, L. Jones, eet al, J.GEOPHYS. RES.,VOL. 114, D06206, doi:10.1029/2008JD011235, 2009. Ritter, B. and Geleyn, J., Monthly Weather Review, 120, 303-325, 1992. Tanre, D., Geleyn, J., and Slingo, J., A. Deepak Publ., Hampton, Virginia, 133-177, 1984. Tarasova, T., and Fomin, B., Journal of Atmospheric and Oceanic Technology, 24, 1157-1162, 2007. Tegen, I., Hollrig, P., Chin, M., et al., Journal of Geophysical Research- Atmospheres, 102, 23895-23915, 1997.

  6. [The role of parental support in the relationship between homophobic bullying, internalized homophobia and psychological distress among sexual-minority youths (SMY): a moderated mediation approach].

    Science.gov (United States)

    Bergeron, Félix-Antoine; Blais, Martin; Hébert, Martine

    Introduction Sexual-minority youths (SMY) report high rates of psychological distress such as depression, anxiety and suicidal ideation (Burton, Marshal, Chisolm, Sucato et Friedman, 2013; Williams & Chapman, 2011). Several studies confirm that the poor mental health outcomes are partly related to their high likelihood of experiencing homophobic victimization (Blais, Gervais, Boucher, Hébert & Lavoie, 2013; Taylor & Peter, 2011; Hughes, McCabe, Wilsnack, West & Boyd, 2010; Chamberland, Richard & Bernier, 2013). Whereas the development of a positive sexual minority identity is crucial for the mental health of SMY (Chamberland, Richard & Chevrier, 2011; Rosario, Schrimshaw & Hunter, 2011; Luhtanen, 2002), the victimization they experience put them at risk of internalizing societal homophobia and heterosexism (Meyer, 2003; Hatzenbuehler, 2009). It is important to identify variables that may influence the impact of distal and proximal factors that impact SMY's mental health.Objectives The objectives of this paper are 1) to document different forms of homophobic victimization experienced by SMY, according to gender and age, and 2) to test the potential moderating effect of parental support in the relationship between homophobic victimization, internalized homophobia and psychological distress.Method Data come from 228 SMY aged 14 to 22 years old recruited through online means as part of the Quebec Youth's Romantic Relationships Survey. The impact of homophobic victimization, parental support, and internalized homophobia on psychological distress is explored by a linear regression model including moderated mediation effects.Results Results show the relationship between homophobic victimization and psychological distress as well as indirect significant relationship through internalized homophobia. The moderated mediation analysis also confirms the moderating role of parental support in the relationship between homophobic victimization and psychological distress. Thus

  7. Le problème des hydrates dans le contexte de la production et du transport polyphasiques des pétroles bruts et des gaz naturels. Deuxième partie : les solutions possibles aux difficultés d'exploitation générées par les hydrates Hydrates Problem Within the Framework of Multiphase Production and Transport of Crude Oils and Natural Gases. Part Two: Possible Solutions to Exploitation Difficulties Generated by Hydrates

    Directory of Open Access Journals (Sweden)

    Behar E.

    2006-11-01

    Full Text Available L'exploitation en mer des gisements de combustibles fossiles fluides a amplifié le besoin d'accroître nos connaissances sur les hydrates qui sont susceptibles de boucher les installations de production, de traitement et de transport. La première partie rappelait la structure moléculaire des hydrates I, Il et H et décrivait ensuite succinctement l'analyse physico-chimique de leur formation, tant sur les plans thermodynamique que cinétique. Dans cette deuxième partie, les remèdes possibles aux problèmes rencontrés par les compagnies opératrices sont indiqués, essentiellement les inhibiteurs thermodynamiques classiques tels que les alcools ou les sels qui diminuent la température de formation des hydrates, et les additifs dispersants qui évitent la croissance et/ou l'agglomération des cristaux. Pour terminer, une boucle pilote de circulation originale est présentée, ses caractéristiques qui permettent la validation des additifs dispersants dans des conditions hydrodynamiques et physico-chimiques représentatives étant soulignées. Offshore exploitation of fossil fluid fuels has emphasized the need of improving our knowledge on hydrates which can plug production, treatment and transport facilities. The first part recalled the molecular structure of I, II and H hydrates, then the physical-chemistry of their formation was briefly reviewed from both the thermodynamic and the kinetic points of view. In this second part, the possible remedies to the problems met by operating companies are described, mainly classical thermodynamic inhibitors such as alcohols or salts which decrease the hydrates formation temperature, and dispersant additives which avoid crystals growth and/or agglomeration. At last an original circulation loop at pilot scale is presented, its characteristics which allow the testing of dispersant additives under representative hydrodynamic and physico-chemical conditions being outlined.

  8. Le problème des hydrates dans le contexte de la production et du transport polyphasiques des pétroles bruts et des gaz naturels. Première partie : physico-chimie de la formation et de la dissociation des hydrates Hydrates Problem Within the Framework of Multiphase Production and Transport of Crude Oils and Natural Gases. Part One: Physical-Chemistry of Hydrates Formation and Dissociation

    Directory of Open Access Journals (Sweden)

    Behar E.

    2006-11-01

    Full Text Available L'exploitation en mer des gisements de combustibles fossiles fluides a amplifié le besoin d'accroître nos connaissances sur les hydrates qui sont susceptibles de boucher les installations de production, de traitement et de transport. Dans cette publication, la structure moléculaire des hydrates I, II et H est rappelée, ensuite l'analyse physico-chimique de leur formation est succinctement décrite tant sur les plans thermodynamique que cinétique. Enfin, les remèdes possibles aux problèmes rencontrés par les compagnies opératrices sont indiqués, essentiellement les inhibiteurs thermodynamiques classiques tels que les alcools ou les sels qui diminuent la température de formation des hydrates, et les additifs dispersants qui évitent la croissance et/ou l'agglomération des cristaux. Pour terminer, une boucle pilote de circulation originale est présentée, ses caractéristiques qui permettent la validation des additifs dispersants dans des conditions hydrodynamiques et physico-chimiques représentatives étant soulignées. Offshore exploitation of fossil fluid fuels has emphasized the need of improving our knowledge on hydrates which can plug production, treatment and transport facilities. In this paper, the molecular structure of I, II and H hydrates is recalled, then the physical-chemistry of their formation is briefly reviewed from both the thermodynamic and the kinetic points of view. Finally, the possible remedies to the problems met by operating companies are described, mainly classical thermodynamic inhibitors such as alcohols or salts which decrease the hydrates formation temperature, and dispersant additives which avoid crystals growth and/or agglomeration. At last an original circulation loop at pilot scale is presented, its characteristics which allow the testing of dispersant additives under representative hydrodynamic and physico-chemical conditions being outlined.

  9. A Deep Learning Approach to LIBS Spectroscopy for Planetary Applications

    Science.gov (United States)

    Mullen, T. H.; Parente, M.; Gemp, I.; Dyar, M. D.

    2017-12-01

    from terrestrial lab data to Martian field data. Neural networks and generative models provide the flexibility need for elemental composition prediction and unseen spectra synthesis. [1] Clegg S. et al. (2016) Spectrochim. Acta B, 129, 64-85. [2] Boucher T. et al. (2017) J. Chemom., 31, e2877.

  10. Of woods and webs: possible alternatives to the tree of life for studying genomic fluidity in E. coli

    Directory of Open Access Journals (Sweden)

    Lapointe François-Joseph

    2011-07-01

    analyse the evolutionary processes at play in microbial evolution. This manuscript was reviewed by: Ford Doolittle, Tal Pupko, Richard Burian, James McInerney, Didier Raoult, and Yan Boucher

  11. Radiobiological hypoxic fraction does not correlate with pO2 measurements in eight human tumor xenografts into nude mice

    International Nuclear Information System (INIS)

    Taghian, A.; Huang, P.; Griffon, G.; Hartford, A.; Allam, A.; Costa, A. da; Kozin, S.; Suit, H.D.

    1997-01-01

    Purpose/Objective: Clinical and laboratory reports suggest that hypoxia limits local control probability in tumors treated by radiation. Significant increase in the TCD 50 (the dose of radiation needed to control 50% of the tumors) was obtained in a number of tumor models when the tumors were rendered hypoxic by clamping. Furthermore, recent data have shown the value of measuring the pO2 using electrodes in predicting the tumor response to radiation in cervical cancer. The aim of this study is to investigate the correlation between the radiobiological hypoxic fraction (HF) and the pO2 measurements of human tumor xenografts. Materials and Methods: Eight human tumor xenografts (five glioblastoma, one squamous cell carcinoma, one colon cancer, and one soft tissue sarcoma) were used in these experiments. Tumor chunks 2 mm in diameter were implanted into the hindleg of 5 Gy whole-body irradiated nude mice. When the tumor size reached 110 mm 3 , radiation was administered in a single dose ranging from 17.5 Gy to 90 Gy in hypoxic conditions. Acute hypoxia was induced by clamping the tumor bearing leg three minutes before and during the treatment. When aerobic conditions were required, the tumor bearing leg was immobilized by a hook which fitted around the ankle. Seven to 10 tumors were assigned to each dose level in each assay; there were 6 to 8 dose levels per assay. Starting at 2-3 weeks after irradiation, the animals were examined once per week and scored for presence of local tumor; if present, tumor diameters were measured. Tumor response is described in terms of radiation dose (in Gy) required to control 50% of the xenografts (TCD 50 ). The (HF) was determined using the formula of Howes (HF=e - ((TCD 50 hypoxic-TCD 50 air)(Do hypoxic)) and assuming an oxygen enhancement ratio of 3.0: (D o hyp=D o air x 3.0) (the D o air was separately determined in vitro for the corresponding cell lines). The pO2 measurements used electrodes as published (Boucher et al

  12. Bioinformatics for Genome Analysis

    Energy Technology Data Exchange (ETDEWEB)

    Gary J. Olsen

    2005-06-30

    Nesbo, Boucher and Doolittle (2001) used phylogenetic trees of four taxa to assess whether euryarchaeal genes share a common history. They have suggested that of the 521 genes examined, each of the three possible tree topologies relating the four taxa was supported essentially equal numbers of times. They suggest that this might be the result of numerous horizontal gene transfer events, essentially randomizing the relationships between gene histories (as inferred in the 521 gene trees) and organismal relationships (which would be a single underlying tree). Motivated by the fact that the order in which sequences are added to a multiple sequence alignment influences the alignment, and ultimately inferred tree, they were interested in the extent to which the variations among inferred trees might be due to variations in the alignment order. This bears directly on their efforts to evaluate and improve upon methods of multiple sequence alignment. They set out to analyze the influence of alignment order on the tree inferred for 43 genes shared among these same 4 taxa. Because alignments produced by CLUSTALW are directed by a rooted guide tree (the denderogram), there are 15 possible alignment orders of 4 taxa. For each gene they tested all 15 alignment orders, and as a 16th option, allowed CLUSTALW to generate its own guide tree. If we supply all 15 possible rooted guide trees, they expected that at least one of them should be as good at CLUSTAL's own guide tree, but most of the time they differed (sometimes being better than CLUSTAL's default tree and sometimes being worse). The difference seems to be that the user-supplied tree is not given meaningful branch lengths, which effect the assumed probability of amino acid changes. They examined the practicality of modifying CLUSTALW to improve its treatment of user-supplied guide trees. This work became ever increasing bogged down in finding and repairing minor bugs in the CLUSTALW code. This effort was put on hold

  13. Progress in Global Multicompartmental Modelling of DDT

    Science.gov (United States)

    Stemmler, I.; Lammel, G.

    2009-04-01

    input parameters. Furthermore, better resolution of some processes could improve model performance. References: Marsland S.J., Haak H., Jungclaus J.H., Latif M., Röske F. (2003): The Max-Planck-Institute global ocean/sea ice model with orthogonal curvilinear coordinates. Ocean Modelling 5, 91-127 Maier-Reimer E. , Kriest I., Segschneider J., Wetzel P. : The HAMburg Ocean Carbon Cycle Model HAMOCC 5.1 - Technical Description Release 1.1 (2005),Reports on Earth System Science 14 Stier P. , Feichter J. (2005), Kinne S., Kloster S., Vignati E., Wilson J.Ganzeveld L., Tegen I., Werner M., Blakanski Y., Schulz M., Boucher O., Minikin A., Petzold A.: The aerosol-climate model ECHAM5-HAM. Atmos. Chem. Phys 5, 1125-1156 Semeena V.S., Feichter J., Lammel G. (2006): Impact of the regional climate and substance properties on the fate and atmospheric long-range transport of persistent organic pollutants - examples of DDT and γ-HCH. Atmos. Chem. Phys. 6, 1231-1248

  14. Identification of mineral dust layers in high alpine snow packs

    Science.gov (United States)

    Greilinger, Marion; Kau, Daniela; Schauer, Gerhard; Kasper-Giebl, Anne

    2017-04-01

    allow a retrospective evaluation of previous snow chemistry data of snow packs of previous years or different locations. Thus the unique time of almost 30 years of snow chemistry data from glaciers surrounding the Sonnblick observatory [5] can be evaluated, focusing on the intensity and frequency of the occurance of Saharan dust layers in high alpine snow packs. Literature: [1] Boucher, O., Randall, D., Artaxo, P., Bretherton, C., Feingold, G., Forster, P., Kerminen, V.M., Kondo, Y., Liao, H., Lohmann, U., Rasch, P., Satheesh, S.K., Sherwood, S., Stevens, B., Zhang, X.Y., 2013. Clouds and aerosols. In: Stocker, T.F., Qin, D., Plattner, G.-K., Tignor, M., Allen, S.K., Boschung, J., Nauels, A., Xia, Y., Bex, V., Midgley, P.M. (Eds.), Climate Change 2013: the Physical Science Basis. Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change. Cambridge University Press, Cambridge, United Kingdom and New York, NY, USA. [2] Prospero, J.M., 1996. Saharan Dust Transport Over the North Atlantic Ocean and Mediterranean: An Overview, in: Guerzoni, S., Chester, R. (Eds.), The Impact of Desert Dust Across the Mediterranean, Environmental Science and Technology Library. Springer Netherlands, pp. 133-151. [3] Avila, A., Rod_a, F., 1991. Red rains as major contributors of nutrients and alkalinity to terrestrial ecosystems at Montseny (NE Spain). Orsis Org. Sist. 6, 215e229. [4] Miles, L.J., Yost, K.J., 1982. Quality analysis of USGS precipitation chemistry data for New York. Atmos. Environ. 1967 (16), 2889e2898. http://dx.doi.org/10.1016/ 0004-6981(82)90039-7. [5] Greilinger, Marion, et al. "Temporal changes of inorganic ion deposition in the seasonal snow cover for the Austrian Alps (1983-2014)." Atmospheric Environment 132 (2016): 141-152.

  15. Optimisation énergétique des procédés de séparation en raffinage et en traitement de gaz naturel Optimal Use of Energy in Separation Processes for Refining and Natural Gas Treatment

    Directory of Open Access Journals (Sweden)

    Rojey A.

    2006-11-01

    Full Text Available Cet article présente une méthode d'optimisation des procédés de séparation basée sur une analyse thermodynamique. Cette analyse s'appuie sur un bilan exergétique qui est établi dans le cas général d'un système quelconque opérant en régime permanent. Les facteurs qui conditionnent le rendement exergétique d'un procédé de séparation sont ensuite examinés. Il en résulte une méthode d'optimisation basée sur une réduction des irréversibilités thermodynamiques. Des exemples concrets d'application en raffinage et en traitement de gaz naturel sont présentés, et on montre comment cette analyse peut déboucher sur la conception de procédés innovants. The optimization of separation units in refining and natural-gas processing must take into consideration new needs and constraints that may seem incompatible. New installations must be designed not only on the basis of energy optimization but also by seeking to minimize investments and to respect new rules concerning environmental protection. The optimization described in this article is based on a thermodynamic analysis of different material and energy exchanges, The energybalance provides a suitable basis for making this analysis. It leads to the defining of an exergy efficiency that is all the higher as the thermodynamic irreversibilities are reduced, and that tends toward one for an ideal reversible system. For a separation process, a separation exergyterm is defined that correspond to the minimum separation work . Distillation is the basic separation operation. The exergy efficiency of this operation is low, and we show that, even in a relatively favorable cas, it is no greater than a value of about 6%. For an atmospheric distillation operation of crude oil, the exergy efficiency is about 4%. This overall exergy efficiency is the product of an external exergy efficiency and an internal exergy efficiency. The external exergy efficiency can be improved by better thermal

  16. The Cloud2SM Project

    Science.gov (United States)

    Crinière, Antoine; Dumoulin, Jean; Mevel, Laurent; Andrade-Barosso, Guillermo; Simonin, Matthieu

    2015-04-01

    thermal monitoring of civil engineering structures [2-3] and/or the vibration monitoring of such structures [4-5]. The chosen architecture is based on the OGC standard in order to ensure the interoperability between the various measurement systems. This concept is extended to the notion of physical models. The last but not the least main objective of this project is to explore the feasibility and the reliability to deploy mathematical models and process a large amount of data using the GPGPU capacity of a dedicated computational cluster, while studying OGC standardization to those technical concepts. References [1] M. Proto et al., « Transport Infrastructure surveillance and Monitoring by Electromagnetic Sensing: the ISTIMES project », Journal Sensors, Sensors 2010, 10(12), 10620-10639; doi:10.3390/s101210620, December 2010. [2] J. Dumoulin, A. Crinière, R. Averty ," Detection and thermal characterization of the inner structure of the "Musmeci" bridge deck by infrared thermography monitoring ",Journal of Geophysics and Engineering, Volume 10, Number 2, 17 pages ,November 2013, IOP Science, doi:10.1088/1742-2132/10/6/064003. [3] J Dumoulin and V Boucher; "Infrared thermography system for transport infrastructures survey with inline local atmospheric parameter measurements and offline model for radiation attenuation evaluations," J. Appl. Remote Sens., 8(1), 084978 (2014). doi:10.1117/1.JRS.8.084978. [4] V. Le Cam, M. Doehler, M. Le Pen, L. Mevel. "Embedded modal analysis algorithms on the smart wireless sensor platform PEGASE", In Proc. 9th International Workshop on Structural Health Monitoring, Stanford, CA, USA, 2013. [5] M. Zghal, L. Mevel, P. Del Moral, "Modal parameter estimation using interacting Kalman filter", Mechanical Systems and Signal Processing, 2014.

  17. New developments on COSI6, the simulation software for fuel cycle analysis

    Energy Technology Data Exchange (ETDEWEB)

    Meyer, Maryan; Boucher, Lionel [CEA, DEN, DER, SPRC, LECy, Centre de Cadarache, Batiment 230, Saint-Paul-lez-Durance, 13108 (France)

    2009-06-15

    , concentration (SQs/MT), radiation dose rates (rem/hr at a distance of 1 meter), inventory (Significant Quantities). Those results allows to assess proliferation resistance of fuel cycle or to implement an integrated method. The coupling between COSI6 and ERANOS is on the way: the initial composition of fuel is given to MACCAO software, MACCAO builds an ERANOS input mixing it and a reference case, ERANOS is run and the results returns to COSI. This coupling will be a reference calculation way, which provides other results like end-of-cycle reactivity or core dynamic coefficients. For international collaboration COSI is available in French language or English language, with total compatibility of data sets. COSI is used in France, Italy and Germany within licence agreements. COSI utilisation involves a nice graphical user interface, including graphical post processing. The next evolution will include the coupling with CESAR5.3 (JEFF3.1 nuclear data). Examples of studies and results obtained with COSI are presented in the paper. Specific papers about scenario studies made with COSI are also presented. References: [1] Lionel Boucher, Jean-Paul Grouiller: 'COSI: the complete renewal of the simulation software for fuel cycle analysis', proceedings of ICONE 14, Miami, USA, July 17-20, 2006. [2] G. Rimpault, 'The ERANOS Code and Data System for Fast Reactor Neutronic Analyses', Proc. of the PHYSOR 2002 International Conference on the New Frontiers of Nuclear Technology: Reactor Physics, Safety and High Performance Computing, Seoul, Korea, October 7-10,2002. (authors)

  18. Influence sociale et leadership dans la direction des personnes

    Directory of Open Access Journals (Sweden)

    Yves Bapes Ba Bapes

    2010-09-01

    Full Text Available Dans le contexte actuel de direction des personnes, la bonne articulation de l’influence sociale et du leadership constitue un véritable défi à relever. Partagées entre la rupture d’avec les modes de management classiques et la fidélité au management traditionnel, les organisations se trouvent de plus en plus insérées dans un champ où s’expriment diverses rationalités toujours plus complexes. Les modes d’exercice du leadership semblent en fait subir l’influence de l’environnement social et culturel dans lequel ils s’expriment, ce qui consacre un certain relativisme qui vise à recommander désormais un ré-encastrement social du leadership. Les enjeux actuels de la direction des personnes placent les organisations au cœur d’une remise en question nécessaire, du moment où les valeurs de la démocratie semblent orienter les problématiques actuelles. Dès lors, une redéfinition de l’influence sociale et du leadership, qui tienne compte des élaborations théoriques et des constations empiriques s’impose, en vue de déboucher sur une culture d’entreprise négociée qui rende plus réelle l’optimisation du capital humain.In the present context of personnel management, the good articulation of social influence and leadership is a major challenge. Caught between the break away from classical management methods and faithfulness to traditional management, organizations are becoming more and more integrated in a field where different and even more complex rationalities are expressed. Actually, ways of practicing leadership seem to be subject to the influence of the social and cultural environment in which they are used. This, therefore, establishes some sort of relativism which aims henceforth at recommending a new social build-in of leadership. The present issues in personnel management place organizations at the centre of a necessary questioning, as democratic values seem to be oriented towards current problems

  19. Coke Formation During Hydrocarbons Pyrolysis. Part One: Steam Cracking Formation de coke pendant la pyrolise des hydrocarbures. Première partie : vapocraquage

    Directory of Open Access Journals (Sweden)

    Weill J.

    2006-11-01

    Full Text Available Thermal cracking is always accompanied by coke formation, which becomes deposited on the wall and limits heat transfers in the reactor while increasing pressure drops and possibly even plugging up the reactor. This review article covers undesirable coking operations in steam craking reactors. These coking reactions may take place in the gas phase and/or on the surface of the reactor, with coke being produced during pyrolysis by a complex mechanism that breaks down into a catalytic sequence and a noncatalytic sequence. After a brief description of different experimental set-ups used to measure the coke deposition, on the basis of research described in the literature, the different factors and their importance for coke formation are listed. In particular, we describe the effects of surface properties of stainless-steel and quartz reactors as well as the influence of the cracked feedstock, of temperature, of dilution, of residence time and of the conversion on coke deposition. Some findings about the morphology of coke are described and linked to formation mechanisms. To illustrate this review, some particularly interesting research is referred to concerning models developed to assess coke formation during propane steam cracking. Le craquage thermique est toujours accompagné de la formation de coke qui, en se déposant à la paroi, limite les transferts de chaleur au réacteur, augmente les pertes de charges et même peut boucher celui-ci. Cet article fait le point sur les réactions indésirables de cokage dans les réacteurs de vapocraquage. Ces réactions de cokage peuvent avoir lieu en phase gazeuse et/ou sur la surface du réacteur, le coke étant produit pendant la pyrolyse par un mécanisme complexe qui se décompose en une séquence catalytique et une séquence non catalytique. Après une brève présentation des différents montages expérimentaux utilisés pour mesurer le dépôt de coke, il est mentionné, à partir de travaux de la

  20. Kelvin Notation for Stabilizing Elastic-Constant Inversion Notation Kelvin pour stabiliser l'inversion de constantes élastiques

    Directory of Open Access Journals (Sweden)

    Dellinger J.

    2006-12-01

    introduction progressive des paramètres. En permettant l'évolution par étapes (isotropie, isotropie transversale, orthorhombique, anisotropie générale, la méthode doit déboucher sur la solution la plus isotrope de toutes celles qui expliquent les données.

  1. A canadian response to the iconography of war propaganda in the British Empire: Nellie McClung’s Politeia Pax Feminina Une réponse canadienne à l’iconographie de la propagande de guerre dans l’Empire britannique : la « Politeia Pax Feminina » de Nellie McClung

    Directory of Open Access Journals (Sweden)

    Karin Ikas

    2009-10-01

    Full Text Available Comme l’écrivait récemment Margaret Atwood dans Story of a Nation (2001, l’éthique canadienne de considération pour autrui fait aujourd’hui partie de l’identité nationale autant que le respect de la diversité et du multiculturalisme. Il faut ajouter à ce propos le lien que l’on peut établir entre l’impact de la guerre et le rôle de la paix dans le processus actuel de construction d’une identité nationale canadienne. En dépit du fait que le Canada ne soit pas aujourd’hui une nation militaire mais plutôt une nation de soldats de la paix, la guerre, comme c’est le cas pour toute nation, a eu un rôle instrumental dans le processus de construction de la nation. En réalité, « c’est la guerre qui a fait le Canada », comme l’annonçait la page d’accueil du Musée canadien de la guerre, mise en ligne il y a peu. Cependant, « le Canada n’a jamais été un enfant de chœur dans le concert des nations ; il a participé à des guerres et a négocié ses avantages comme tous les autres. Pourtant, s’il faut que les nations projettent une image d’elles-mêmes, il vaut certainement mieux que les Canadiens s’identifient à la moralité incarnée et s’imaginent dans le rôle d’arbitres plutôt que celui de bouchers ou de bellicistes », note pertinemment J. L. Grantstein. En partant de ces observations, le présent article remonte à l’époque du Haut Empire et de la Grande Guerre, que l’on peut considérer comme la pierre angulaire de ces évolutions. En s’appuyant sur le travail de critiques comme J. Turpin, J. Bethke-Elshtain et A. Carter pour définir son cadre théorique, cet article examine la relation contestée entre maternité, paix et guerre, et l’impact de cette relation sur la construction d’une identité nationale et féminine en contexte de guerre. Cette analyse aborde en premier lieu du matériel de propagande, des œuvres d’art et des représentations littéraires de cette p

  2. Book Reviews

    Directory of Open Access Journals (Sweden)

    Redactie KITLV

    1994-01-01

    Full Text Available -Peter Hulme, Simon Gikandi, Writing in limbo: Modernism and Caribbean literature. Ithaca: Cornell University Press, 1992. x + 260 pp. -Charles V. Carnegie, Alistair Hennessy, Intellectuals in the twentieth-century Caribbean (Volume 1 - Spectre of the new class: The Commonwealth Caribbean. London: Macmillan, 1992. xvii 204 pp. -Nigel Rigby, Anne Walmsley, The Caribbean artists movement, 1966-1972: A literary and cultural history. London: New Beacon Books, 1992. xx + 356 pp. -Carl Pedersen, Tyrone Tillery, Claude McKay: A black poet's struggle for identity. Amherst: University of Massachusetts Press, 1992. xii + 235 pp. -Simone Dreyfus, Irving Rouse, The Tainos: Rise and decline of the people who greeted Columbus. New Haven: Yale University Press, 1992. xii + 211 pp. -Louis Allaire, Antonio M. Stevens-Arroyo, Cave of the Jagua: The mythological world of the Taino. Alburquerque: University of New Mexico Press, 1988. xiii + 282 pp. -Irving Rouse, William F. Keegan, The people who discovered Columbus: The prehistory of the Bahamas. Gainesville: University of Florida Press, 1992. xx + 279 pp. -Neil L. Whitehead, Philip P. Boucher, Cannibal encounters: Europeans and Island Caribs, 1492-1763. Baltimore: John Hopkins University Press, 1992. xii + 217 pp. -Peter Kloos, Kaliña, des amérindiens à Paris: Photographies du prince Roland. Présentées par Gérard Collomb. Paris: Créaphis, 1992. 119 pp. -Maureen Warner-Lewis, Alan Gregor Cobley ,The African-Caribbean connection: Historical and cultural perspectives. Bridgetown, Barbados: Department of History, University of the West Indies, Cave Hill, 1990. viii + 171 pp., Alvin Thompson (eds -H. Hoetink, Jean-Luc Bonniol, La couleur comme maléfice: une illustration créole de la généalogie des 'Blancs' et des 'Noirs'. Paris: Albin Michel, 1992. 304 pp. -Michael Aceto, Richard Price ,Two evenings in Saramaka. Chicago and London: University of Chicago Press, 1991. xvi + 417 pp., Sally Price (eds -Jorge P

  3. Hydraulic Hybrid Propulsion for Heavy Vehicles: Combining the Simulation and Engine-In-the-Loop Techniques to Maximize the Fuel Economy and Emission Benefits Propulsion hybride hydraulique des poids lourds : une approche alliant les techniques de simulation et d’« Engine-In-the-loop » (EIL afin de maximiser les économies de carburant et les avantages en termes d’émissions

    Directory of Open Access Journals (Sweden)

    Filipi Z.

    2009-09-01

    échauffement climatique fournissent une forte motivation pour le développement de moyens de propulsion véhiculaires économes. Pour les camions, cette tâche est particulièrement difficile à accomplir du fait d’importantes contraintes de taille et de poids. L’hybridation est la seule approche qui puisse déboucher sur des progrès importants à court et moyen termes. En particulier, la configuration “hybride série” découple le moteur thermique des roues et permet une flexibilité complète dans le contrôle des points de fonctionnement moteur. De plus, la conversion et le stockage de l’énergie hydraulique fournissent une densité de puissance et un rendement excellents. Le défi technologique tient à la faible densité d’énergie de l’accumulateur hydraulique, et met en avant l’importance particulière du développement du gestionnaire de l’énergie. Il est communément admis qu’il faut maintenir le moteur au point de rendement maximum mais, si l’objectif ultime en terme énergétique consiste à optimiser drastiquement le rendement du moteur, ceci induit des phases transitoires fréquentes causant pour des moteurs diesels des effets opposés tant sur l’émission de particules que sur l’agrément de conduite. Par conséquent, nous proposons une méthodologie pour le superviseur d’énergie d’un système hybride, qui prend en compte 2 objectifs : la réduction de consommation et la réduction des émissions polluantes. Les économies de carburant sont prises en compte par une approche fondée sur la simulation, alors que l’étude de l’impact des phases transitoires du moteur sur les émissions de particules, est fondée sur un dispositif expérimental combinant modèles temps réel et moteur réel – l’EIL (Engine-In-the-Loop. Le dispositif EIL confirme que le contrôle de la répartition énergétique thermique/hydraulique de l’état de charge des batteries (SOC présente des avantages certains sur celui basé sur l’approche de contr

  4. Sampling Devices for Water and Soil; Methodes de Prelevement d'Echantillons dans l'Eau et le Sol; 041f 0420 0414 ; Dispositivos para Tomar Muestras de Agua y de Suelos

    Energy Technology Data Exchange (ETDEWEB)

    Merritt, W. F.; Parsons, P. J. [Environmental Research Branch, Division of Biology and Health Physics, Atomic Energy of Canada Limited, Chalk River, ON (Canada)

    1960-07-01

    eaux souterraines. On construit actuellement un spectrometre portatif a rayons X, destine a servir dans ces puits secs. Des echantillons d'eau souterraine sont preleves a des profondeurs determinees au moyen de petits recipients d'aluminium relies a la surface par des tuyaux de polythene. Les echantillons sont deverses dans un ballon qui est ensuite enleve. On peut fixer plusieurs recipients sur une tige qui est entouree d'un coffrage; ce coffrage est enfonce a la profondeur voulue et ensuite retire, laissant les recipients en place dans le sol. Lorsqu'il n'existe pas de formations rocheuses, des piezometres de bronze poreux peuvent etre enfonces profondement dans le sol, par pression ou forage. L'eau circule librement a travers le bronze et se deverse dans un ballon qui est enleve. Dans un seul puits, il est possible d'extraire de nombreuses carottes prelevees a toute une gamme de profondeurs determinees a l'avance, en utilisant des sondes fixees a une tige de forage. Chaque sonde est constituee par une tige creuse percee de rainures qui sont fermees par un piston lors du forage. Pour le prelevement de la carotte, le piston est amene legerement en retrait et l'on fait tourner la tige. Un deuxieme piston, fixe au premier, intervient alors pour boucher les rainures et l'ensemble des sondes est retire du puits. On preleve des carottes de sable non remue en dessous du niveau hydrostatique au moyen de sondes munies d'une cloche a air, grace a laquelle la carotte peut etre amenee dans une cavite d'air et maintenue dans la conduite par la pression de l'air pendant que la sonde est remontee a la surface. (author) [Spanish] En Chalk River se utilizan varios metodos para controlar el desplazamiento subterraneo de las sustancias radiactivas. Se introducen en el terreno tubos cerrados de aluminio hasta alcanzar el conglomerado glaciar. Por el tubo se hace descender un contador Geiger amarrado a un cable y alimentado por una bateria. El contador puede detectar una actividad de 20

  5. Herbeleving en herinterpretatie. Recente literatuur over Nederland en de Tweede Wereldoorlog

    Directory of Open Access Journals (Sweden)

    P. Romijn

    1987-01-01

    Full Text Available Flehite. Tijdschrift voor verleden en heden van Oost-Utrecht J.R. Pauwels, Bijdragen van het Navorsings- en studiecentrum voor de geschiedenis van de tweede wereldoorlog J. van der Steen, Jaarboek van de Heemkunde 'Roerstreek' H.T. Bussemaker, De militaire spectator Maandorgaan van de documentatiegroep '40-'45 G. Abma, Tussen goed en fout. Nieuwe gezichtspunten in de geschiedschrijving 1940-1945 M. Avesaath-van den Broek, Swalmen '40-'45 P. Baghus, Ontmoeting met de bevrijding. De ouverture in Limburg 1944-1945 P. Berserk, De tweede generatie. Herinneringen van een NSB-kind R. Blatt, Rudy, een strijdbare jood, 1940-1945 H. Bollen, J. Kuiper-Abee, Worsteling om Walcheren 1939-1945 A.H. Bornebroek, De illegaliteit in Twente. Een onderzoek naar het ondergronds georganiseerd verzet in '40-'45 J. Bosdriesz, G. Soeteman, Ons Indië voor de Indonesiërs. De oorlog — de chaos — de vrijheid bewerkt naar de gelijknamige NOS-documentaire door C. van Heekeren F. Boucher, E. Kalkman, D. Schaap, Woord gehouden. Veertig jaar Stichting 1940-1945 B. van der Klaauw, B.M. Rijnhout, De luchtoorlog boven Nederland 1940-1945 A. Korthals Altes, Slag in de schaduw, Peel/Maas 1944-'45 H. Kraaijenbrink, Politierapport 1940-1945. Dagboek van een politieofficier B.H. Laurens, Hun armoede en hun grauwe gezicht. Hongerwinter '44-'45 L. Looijenga, De bevrijding is een jaartal geworden. Noordwolde 1940/45…1985. Een stille omgang door Weststellingwerfs oorlogsgeschiedenis K. Mallan, Als de slag van gisteren… Rotterdam 10-14 mei 1940. De Duitse overrompeling en vernietiging van Nederlands eerste havenstad J.A. Niemeijer, A.J.A. Mulder, Verzet in Groningen J.J. Nortier, Acties in de Archipel. De intelligence-operaties van NEFIS III in de Pacific-oorlog H. Onderwater, Operatie 'Manna'. De geallieerde voedseldroppings april/mei 1945 J. Pisuisse, Dubbelbeeld. Twee vrouwen in oorlogstijd Nederland en Indië R. Roegholt, J. Zwaan, Het verzet 1940-1945 J. Roelfs, De onvergetelijke

  6. Tropospheric Aerosols

    Science.gov (United States)

    Buseck, P. R.; Schwartz, S. E.

    2003-12-01

    anthropogenic aerosols are thought to be of comparable magnitude to the positive forcings resulting from incremental concentrations of greenhouse gases.The magnitudes and estimated uncertainties of the several forcings over the industrial period are summarized in Figure 2, which was prepared as part of the recent assessment of climate change by the Intergovernmental Panel on Climate Change (IPCC, 2001). This figure shows for each forcing a best estimate of its magnitude and of the associated uncertainty. The uncertainty associated with forcing by the long-lived greenhouse gases is relatively small, reflective of the rather high level of understanding of both the magnitude of the incremental concentrations of these species and of the radiative perturbation per incremental concentration. In marked contrast, the uncertainties associated with the several aerosol forcings are much greater, indicative of a much lesser understanding of the controlling quantities. For direct forcing by dust aerosols, which may be positive or negative, and for indirect radiative forcing by anthropogenic aerosols the IPCC working groups ( Penner et al., 2001; Ramaswamy et al., 2001) declined to present best estimates but indicated only possible ranges. This situation is unsatisfying but unavoidable, given the current state of knowledge. Other reviews of aerosol forcings are provided by Ramanathan et al. (2001a), Haywood and Boucher (2000), Shine and Forster (1999), Schwartz (1996), and Schwartz and Slingo (1996). Hobbs (1993) provides an introduction to aerosol-cloud interactions. (9K)Figure 2. The effects of various anthropogenic constituents of the atmosphere on the global climate system for the year 2000 relative to 1750 as estimated by the Intergovernmental Panel on Climate Change (IPCC, 2001). The effects are expressed as forcings, which in this case are changes in global mean radiative flux components arising from the indicated perturbing influence. Best estimates are indicated by the bars and

  7. Adaptive Optics for Industry and Medicine

    Science.gov (United States)

    Dainty, Christopher

    2008-01-01

    Monteiro ... [et al.]. Adaptive optics system to compensate complex-shaped wavefronts (oral paper) / Miguel Ares, and Santiago Royo. A kind of novel linear phase retrieval wavefront sensor and its application in close-loop adaptive optics system (oral paper) / Xinyang Li ... [et al.]. Ophthalmic Shack-Hatmann wavefront sensor applications (oral paper) / Daniel R. Neal. Wave front sensing of an optical vortex and its correction with the help of bimorph mirror (poster paper) / F. A. Starikov ... [et al.]. Recent advances in laser metrology and correction of high numerical aperture laser beams using quadri-wave lateral shearing-interferometry (poster paper) / Benoit Wattellier, Ivan Doudet and William Boucher. Thin film optical metrology using principles of wavefront sensing and interference (poster paper) / D. M. Faichnie, A. H. Greenaway and I. Bain. Direct diffractive image simulation (poster paper) / A. P. Maryasov, N. P. Maryasov, A. P. Layko. High speed smart CMOS sensor for adaptive optics (poster paper) / T. D. Raymond ... [et al.]. Traceable astigmatism measurements for wavefront sensors (poster paper) / S. R. G. Hall, S. D. Knox, R. F. Stevens -- pt. 3. Adaptive optics in vision science. Dual-conjugate adaptive optics instrument for wide-field retinal imaging (oral paper) / Jörgen Thaung, Mette-Owner Petersen and Zoran Popovic. Visual simulation using electromagnetic adaptive-optics (oral paper) / Laurent Vabre ... [et al.]. High-resolution field-of-view widening in human eye retina imaging (oral paper) / Alexander V. Dubinin, Tatyana Yu. Cherezova, Alexis V. Kudryashov. Psychophysical experiments on visual performance with an ocular adaptive optics system (oral paper) / E. Dalimier, J. C. Dainty and J. Barbur. Does the accommodative mechanism of the eye calibrate itself using aberration dynamics? (oral paper) / K. M. Hampson, S. S. Chin and E. A. H. Mallen. A study of field aberrations in the human eye (oral paper) / Alexander V. Goncharov ... [et al.]. Dual

  8. Effects of Ionizing Radiation on Insects and Other Arthropods; Effet des rayonnements ionisants sur les insectes et autres arthropodes; Vozdejstvie ioniziruntsej radiatsii na nasekomykh i drugikh chlenistonogikh; Efectos de las radiaciones ionizantes sobre los insectos y otros artropodos

    Energy Technology Data Exchange (ETDEWEB)

    Stone, William E. [United States Department of Agriculture Laboratories, Mexico City, D.F (Mexico)

    1963-09-15

    'eradication des insectes. L'auteur analyse les resultats obtenus dans la campagne d'eradication de la lucilie bouchere Cochliomyia hominivorax Cqrl. aux Etats-Unis, ainsi que dans des etudes visant a produire des souches vigoureuses, marquees genetiquement en vue d'identifier facilement les mouches steriles apres leur lacher. Il etudie aussi les resultats de recherches sur differents sujets: effets des rayonnements sur six autres especes nuisibles aux fruits, aux legumes, aux cultures et aux forets, sur trois especes qui s'attaquent au cheptel et sur trois especes qui sont particulierement nuisibles a l'homme; effets des rayonnements sur le scorpion Centruroides limpidus Karsch et sur la tique Amblyomma americanium L.; possibilite d'utiliser les rayonnements ionisants pour traiter - comme mesure de quarantaine - les fruits et legumes attaques par les mouches des fruits et les mangues attaquees par le charancon de la mangue Sternochetus mangiferae Fabricius. (author) [Spanish] Actualmente se estudia la posibilidad de recurrir a la radioesterilizacion para exterminar a diversos insectos que atacan al hombre, a los animales y a las plantas. Las primeras investigaciones han demostrado que las radiaciones ionizantes producen esterilidad, y que las dosis necesarias varian considerablemente. Tambien hacen pensar que los daflos producidos por las radiaciones pudieran en algunos casos impedir que se aplique el metodo a ciertos insectos. Con frecuencia, el obstaculo principal es la falta de metodos de cria de los insectos en gran escala. En otros casos, el insecto se da con tal abundancia que no es posible aplicar esta tecnica sin antes tratar por otros medios la zona infestada a fin de reducir el numero de insectos. A pesar de todas las dificultades, el metodo de la radioesterilizacion es uno de los mejores, cuando las condiciones son favorables. Tambien se puede utilizar para retrasar el desarrollo de la plaga hasta despues de la cosecha. La memoria informa sobre la influencia de las

  9. Aquifer overexploitation: what does it mean?

    Science.gov (United States)

    Custodio, Emilio

    2002-02-01

    écider du degré de "surexploitation de la nappe" conseillé ou admisible on a besoin de la description detaillée et à jour des effets de l'exploitation et des mesures de correction adoptées. Cette décision ne peut pas étre prise uniquement à partir de regles générales et l'appui de quelques observations indirectes. On a besoin de controle, d'une bonne connaissance de la nappe, et de calculer ou modeliser le comportement, en faisant appel à l'ensemble des objectifs et politiques établies par une institution de gestion, avec l'implication des personnes qui sont intéressées par l'eau souterraine, et tenant compte des conditions environmentales et sociales. La surexploitation de nappes, qui souvent est associée a quelque chose éthiquement nocive, n'est pas necessairement ainsi pendant un certain temps, et peut être une étape dans l'évolution vers un développement durable. Réellement la designation de surexploitation de nappes est surtout un adjectif que a pour but de qualifier une évolution préoccupante sous certains points de vue, mais sans une signification hydrodynamique précise. Pour adopter des mesures de gestion et protection, on a besoin de l'évaluation quantitative de l'évolution de la nappe et de ses effets, ce qui doit déboucher sur des études detaillées dans un contexte multidisciplinaire, et sur de bonnes données. Resumen. La sobreexpolotación del agua subterránea y la sobreexplotacion de acuíferos son conceptos que se están convirtiendo en términos de uso común en gestión hídrica. Muchos hidrólogos, gestores y periodistas las usan para referirse a un acuífero explotado intensamente o que presenta situaciones conflictivas. La sobreexplotación se puede definir como la situación en la que durante varios años la extracción media de agua subterránea de un acuífero supera o se aproxima a la recarga media. Pero la tasa y también la superficie sobre la que se realiza esta recarga son a menudo muy inciertas, y pueden cambiar por

  10. Multiphase Production. Representation of Thermodynamic Properties of Methanol by Different Equations of State Production polyphasique. Représentation des propriétés thermodynamiques du méthanol à partir de différentes équations d'état

    Directory of Open Access Journals (Sweden)

    Peneloux A.

    2006-11-01

    éveloppement classiques ; - possibilité de mise en production des réservoirs situés par grandes profondeurs d'eau (avec ou sans pompage polyphasique. Ce concept de production polyphasique a été utilisé jusqu'à présent avec des conditions de transport relativement favorables et pour des effluents dont le comportement ne présentait pas de problème majeur. Son extension à des conditions (hydrauliques et thermiques de transport de plus en plus difficiles d'effluents de plus en plus complexes (émulsions, hydrates, paraffines, asphaltènes, sels, corrosion,. . . nécessite en particulier : - une meilleure compréhension et une bonne maîtrise du comportement thermodynamique de ces effluents c'est-à-dire de mélanges contenant essentiellement de l'eau et des hydrocarbures mais aussi divers sels (eaux de gisement et additifs (anti- hydrates/paraffines/corrosion,. . . ; - une meilleure appréciation de l'efficacité des divers additifs (et des mélanges de ces additifs indispensables à des opérations de production sûres, fiables et économiques. Un des principaux additifs utilisés pour inhiber la formation des hydrates est le méthanol, c'est lui que nous avons spécifiquement étudié ici en essayant de modéliser ses propriétés thermodynamiques. L'ajout de méthanol peut, en effet, dans certaines conditions, éviter la formation d'hydrates qui prennent naissance en présence d'eau à basses températures, et qui, en s'agglomérant sous différents états cristallins (I, II, H, peuvent arriver à boucher totalement les conduites de transport, interrompant la production. Ce risque n'est pas du tout théorique comme l'ont clairement démontré un certain nombre d'expériences récentes (en particulier en mer du Nord. Pour des effluents comportant des quantités importantes d'eau, du H2S et/ou des aromatiques et transportés à hautes pressions/basses températures, les quantités de méthanol à utiliser peuvent devenir très importantes et même, dans certains cas