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Sample records for judzis boucher mccammon

  1. Compound heterozygous PNPLA6 mutations cause Boucher-Neuhäuser syndrome with late-onset ataxia.

    Science.gov (United States)

    Deik, A; Johannes, B; Rucker, J C; Sánchez, E; Brodie, S E; Deegan, E; Landy, K; Kajiwara, Y; Scelsa, S; Saunders-Pullman, R; Paisán-Ruiz, C

    2014-12-01

    PNPLA6 mutations, known to be associated with the development of motor neuron phenotypes, have recently been identified in families with Boucher-Neuhäuser syndrome. Boucher-Neuhäuser is a rare autosomal recessive syndrome characterized by the co-occurrence of cerebellar ataxia, hypogonadotropic hypogonadism, and chorioretinal dystrophy. Gait ataxia in Boucher-Neuhäuser usually manifests before early adulthood, although onset in the third or fourth decade has also been reported. However, given the recent identification of PNPLA6 mutations as the cause of this condition, the determining factors of age of symptom onset still need to be established. Here, we have identified a sporadic Boucher-Neuhäuser case with late-onset gait ataxia and relatively milder retinal changes due to compound heterozygous PNPLA6 mutations. Compound heterozygosity was confirmed by cloning and sequencing the patient's genomic DNA from coding exons 26-29. Furthermore, both mutations (one novel and one known) fell in the phospholipase esterase domain, where most pathogenic mutations seem to cluster. Taken together, we herein confirm PNPLA6 mutations as the leading cause of Boucher-Neuhäuser syndrome and suggest inquiring about a history of hypogonadism or visual changes in patients presenting with late-onset gait ataxia. We also advocate for neuroophthalmologic evaluation in suspected cases.

  2. Phylogeny of the genus Yumtaax Boucher (Coleoptera, Passalidae, Proculini: Taxonomic and evolutionary implications with descriptions of three new species

    Directory of Open Access Journals (Sweden)

    Cristian Fernando Beza-Beza

    2017-04-01

    Full Text Available Yumtaax Boucher (Coleoptera: Passalidae is an endemic genus from the temperate sierras of Mexico and includes six narrowly distributed species. Yumtaax species have been assigned to several genera of Passalidae throughout history, and a phylogenetic approach is necessary to understand species delimitation and interspecific relationships. This study reconstructed the molecular phylogeny of six Yumtaax morphotypes using parsimony and Bayesian analysis of DNA sequence data from the ribosomal nuclear gene region 28S and the mitochondrial gene regions 12S and cytochrome oxidase I (COI in addition to morphological characters. Analyses recovered two well-supported Yumtaax clades (the Yumtaax laticornis and Yumtaax imbellis clades that are possible sister lineages. One synapomorphic morphological character state and the geographic isolation of the group provide corroborative evidence for monophyly. Molecular phylogenetic analyses and traditional morphological examinations also resulted in the discovery of two undescribed Yumtaax species and the discovery of two separate evolutionary lineages (cryptic species within Yumtaax recticornis. As a result we describe three new species (Yumtaax veracrucensis Beza-Beza, Reyes-Castillo & Jameson, sp. n., Yumtaax cameliae Beza-Beza, Reyes-Castillo & Jameson, sp. n., and Yumtaax jimenezi Beza-Beza, Reyes-Castillo & Jameson, sp. n., redescribe two species (Yumtaax recticornis [Burmeister 1847] and Yumtaax laticornis [Truqui 1857], and provide a key to all nine Yumtaax species. This study is one of two studies to use molecular data to evaluate the evolutionary relationships of a genus of Bess Beetles (Passalidae, an ecologically important insect group exhibiting low morphological variability and heretofore lacking molecular phylogenetic study.

  3. Smaller Footprint Drilling System for Deep and Hard Rock Environments; Feasibility of Ultra-High-Speed Diamond Drilling

    Energy Technology Data Exchange (ETDEWEB)

    TerraTek, A Schlumberger Company

    2008-12-31

    ) Analysis of Phase 1 data indicated that there is decreased specific energy as the rotational speed increases; (5) Technology transfer, as part of Phase 1, was accomplished with technical presentations to the industry (see Judzis, Boucher, McCammon, and Black); (6) TerraTek prepared a design concept for the high speed drilling test stand, which was planned around the proposed high speed mud motor concept. Alternative drives for the test stand were explored; a high speed hydraulic motor concept was finally used; (7) The high speed system was modified to accommodate larger drill bits than originally planned; (8) Prototype mud turbine motors and the high speed test stand were used to drive the drill bits at high speed; (9) Three different rock types were used during the testing: Sierra White granite, Crab Orchard sandstone, and Colton sandstone. The drill bits used included diamond impregnated bits, a polycrystalline diamond compact (PDC) bit, a thermally stable PDC (TSP) bit, and a hybrid TSP and natural diamond bit; and (10) The drill bits were run at rotary speeds up to 5500 rpm and weight on bit (WOB) to 8000 lbf. During Phase 2, the ROP as measured in depth of cut per bit revolution generally increased with increased WOB. The performance was mixed with increased rotary speed, with the depth cut with the impregnated drill bit generally increasing and the TSP and hybrid TSP drill bits generally decreasing. The ROP in ft/hr generally increased with all bits with increased WOB and rotary speed. The mechanical specific energy generally improved (decreased) with increased WOB and was mixed with increased rotary speed.

  4. A Literature Survey of Reverberation Modeling: With Emphasis on Bellhop Compatibility for Operational Applications

    Science.gov (United States)

    2010-09-01

    necessarily have the approval or endorsement of Defence R&D Canada. Contract Project Manager: Diana McCammon, 902-538-3003 Contract number: W7707...McCammon Acoustical Consulting 475 Baseline Road Waterville, NS B0P 1V0 Contract Project Manager: Diana McCammon, 902-538-3003 Contract Number...in some cases, the scattering area. Some of the older models of reverberation are the Generic Sonar Model (GSM), Cass/Grab, BiRasp, and ASTRAL . A

  5. Cultural probes

    DEFF Research Database (Denmark)

    Madsen, Jacob Østergaard

    2016-01-01

    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....

  6. An Interview Forum on Interlibrary Loan/Document Delivery with Lynn Wiley and Tom Delaney

    Science.gov (United States)

    Hasty, Douglas F.

    2003-01-01

    The Virginia Boucher-OCLC Distinguished ILL Librarian Award is the most prestigious commendation given to practitioners in the field. The following questions about ILL were posed to the two most recent recipients of the Boucher Award: Tom Delaney (2002), Coordinator of Interlibrary Loan Services at Colorado State University and Lynn Wiley (2001),…

  7. The Average X-Ray/Gamma-Ray Spectra of Seyfert Galaxies From Ginga and OSSE and the Origin of the Cosmic X-Ray Background

    Science.gov (United States)

    1995-01-01

    Copernicus Astronomical Center, Bartycka 18, 00-716 Warsaw, Poland; I: aaz@camk.edu.pl W. Neil Johnson E. O. Hulburt Center for Space Research, Naval...For absorption in the re ecting medium, we used the neutral absorption cross sections of Ba lucinska- Church & McCammon (1992) with the elemental...Maehara, M. 1991, PASJ, 43, L1 Ba lucinska- Church , M., & McCammon, D. 1992, ApJ, 400, 699 Bassani, L., et al. 1994, ApJ, in press Della Ceca, R

  8. Passalidae (Coleoptera: Scarabaeoidea) of the Greater and Lesser Antilles.

    Science.gov (United States)

    Jiménez-Ferbans, Larry; Reyes-Castillo, Pedro; Schuster, Jack C

    2015-05-12

    We present a synthesis of the state of knowledge concerning the species of Passalidae (Coleoptera) of the West Indies and we present a key to the species. The recently described genus Antillanax Boucher renders the subgenus Passalus (Pertinax) Kaup paraphyletic, therefore we place Antillanax in synonymy with Passalus (Pertinax) and we propose a new combination for Passalus (Pertinax) doesburgi (Boucher). The island richest in species is Hispaniola, with five species, three of them endemic. Excluding Trinidad and Tobago, the passalid fauna of the West Indies comprises 13 species; this is low richness, but with high endemism (50%), especially for the Greater Antilles.

  9. 77 FR 25538 - Quarterly Publication of Individuals, Who Have Chosen To Expatriate

    Science.gov (United States)

    2012-04-30

    ... CARMEN BONNARD VINCENT DANIEL BOUCHER ANDREW FRANKLIN BOWDEN GEORGENE BROOKE BOXER VIRGINIA ANNE BRANCA... CHAMAY EMILIE MARISSA CHAN GLADYS LO CHANG CHIAO-PO CHANG JENNIFER HYUN JEONG CHANG JESS KIM CHAPUISAT... EISENBERG DENISE ERDIN-SORENSEN RENEE SUSANNE FALCONER JUDITH ANN FANG GENG SENG ] FANG YI CHING CHANG FARAJ...

  10. Senescence Marker Protein 30 (SMP30) Expression in Eukaryotic Cells: Existence Of Multiple Species and Membrane Localization

    Science.gov (United States)

    2011-02-01

    disiopropylfluorophosphate (DFP) and chemical warfare nerve agents including soman, sarin, VX, and tabun [19–21]. In addition, SMP30 knock-out mice lacked...Talbot MK, Boucher LJ, MacIver B, et al. (1989) Partial characterization of an enzyme that hydrolyzes sarin, soman, tabun , and diisopropyl

  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.; Morgan, W.T.; Coe, H.; Krol, M.C.

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

    OpenAIRE

    Franz MJ; Boucher JL; Evert AB

    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...

  14. Development of a Dynamic Biomechanical Model for Load Carriage: Phase III Part B: Characterization of Load Control During a Human Trials Circuit

    Science.gov (United States)

    2005-08-01

    studies be ve responses to pressure in the shoulder and lumbar ensors were BM. It is also recommended that the LC Simulator be used to 5. well...Meeting, KN1;1-20, 2001. Léger, L. and Boucher, R. (1980) An indirect continuous running multistage fi T 77-84. Loehr, James E. Mental Toughne T...62 Appendix D Mental Toughness Questionnaire (Contained in WORD File called By James E Loehr (1986

  15. 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.

  16. Laville Jean-Louis, 2007, L’économie solidaire. Une perspective internationale, Hachette Littératures, 383 p.

    Directory of Open Access Journals (Sweden)

    Sarah Seus

    2008-05-01

    Full Text Available Cet ouvrage collectif sous la direction de Jean-Louis Laville (professeur au Conservatoire national des arts et métiers, co-directeur du Laboratoire interdisciplinaire pour la sociologie économique rassemble huit synthèses de recherche menées dans plusieurs pays et continents. Ecrites par des universitaires européens (Laurent Gardin, Marthe Nyssens, Isabelle Guérin, Laurent Fraisse, Elisabetta Bucolo, québécois (Paul R. Bélanger, Jacques L. Boucher, Benoît Lévesque et chilien (Ignacio Larr...

  17. On-shell recursion relations for gravity

    Science.gov (United States)

    Hall, Anthony

    2008-06-01

    We extend the argument presented by Benincasa, Boucher-Veronneau, and Cachazo to show that graviton tree amplitudes are well behaved under large complex deformations of the momenta of a pair of like-helicity gravitons. This shows that Britto-Cachazo-Feng-Witten recursion relations for gravity amplitudes can be constructed using such shifts, providing an alternative proof to the recent one by Arkani-Hamed and Kaplan. By using auxiliary recursion relations the cancellations which are hidden when using covariant Feynman diagrams become manifest.

  18. 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...

  19. Compact Transducers and Arrays

    Science.gov (United States)

    2005-05-01

    Soc. Am., 104, pp.64-71 44 25.Decarpigny, J.N., J.C. Debus, B. Tocquet & D. Boucher. 1985. "In-Air Analysis Of Piezoelectric Tonpilz Transducers In A... Transducers and Arrays Final Report May 2005 Contacts: Dr. Robert E. Newnham The Pennsylvania State University, 251 MRL, University Park, PA 16802 phone...814) 865-1612 fax: (814) 865-2326 email: ....c xx.....i.i.....ht.. .u a.p.u..c.e.du. Dr. Richard J. Meyer, Jr. Systems Engineering ( Transducers ), ARL

  20. Limits on the radiative decay of sterile neutrino dark matter from the unresolved cosmic and soft x-ray backgrounds

    Science.gov (United States)

    Abazajian, Kevork N.; Markevitch, Maxim; Koushiappas, Savvas M.; Hickox, Ryan C.

    2007-03-01

    We present upper limits on line emission in the Cosmic X-ray background (CXB) that would be produced by decay of sterile neutrino dark matter. We employ the spectra of the unresolved component of the CXB in the Chandra Deep Fields North and South obtained with the Chandra CCD detector in the E=0.8 9keV band. The expected decay flux comes from the dark matter on the lines of sight through the Milky Way galactic halo. Our constraints on the sterile neutrino decay rate are sensitive to the modeling of the Milky Way halo. The highest halo mass estimates provide a limit on the sterile neutrino mass of msrocket-borne calorimeter by McCammon and collaborators.

  1. Oxygen fugacities determined from iron oxidation state in natural (Mg,Fe)O ferropericlase: new insights into lower mantle diamond formation

    Science.gov (United States)

    Longo, Micaela; McCammon, Catherine; Bulanova, Galina; Kaminsky, Felix; Tappert, Ralf

    2010-05-01

    Mineral inclusions in diamonds reflect the chemical composition and mineral assemblages of the two principal rock types occurring in the deep lithosphere, peridotite and eclogite. However, in the past two decades, the discovery of rare diamonds containing inclusions such as former Mg,Si-perovskite and (Mg,Fe)O ferropericlase led to the possibility that diamonds can form also at greater depths. (Mg,Fe)O ferropericlase is the most commonly found inclusion in lower mantle diamonds (more than 50% of the occurrences). Since the Fe3+ concentration in (Mg,Fe)O is sensitive to oxygen fugacity also at high pressures (Frost et al., 2004), the determination of Fe3+/Σ Fe in such inclusions provides a direct method for investigating lower mantle redox conditions during diamond formation. In the present study we explore whether variations in mantle oxygen fugacity exist as a function of chemical, physical and geographic parameters, by studying (Mg,Fe)O inclusions in lower mantle diamonds from a wide range of localities. Eighteen (Mg,Fe)O ferropericlase inclusions from lower mantle diamonds selected worldwide were measured by the flank method using the calibration previously established for synthetic ferropericlase (Longo et al., in preparation). The Fe3+/Σ Fe measured in (Mg,Fe)O inclusions of the present work (Juina, Brazil, Machado River, Brazil and Orroroo, Australia) were compared to data already available for other inclusions of larger size previously measured by Mössbauer spectroscopy (McCammon et al. 1997, 2004). Oxygen fugacity was estimated for each specimen relative to two reference buffers such as the Fe-(Mg,Fe)O buffer (reducing conditions) and the Re-ReO2 buffer (oxidizing conditions). Our results show a dependence on geographical location, and in particular, inclusions from the African province (Kankan Guinea) seem to record more reducing mantle conditions than the inclusions measured from the other provinces, which cover a larger range of fO2 conditions. It is

  2. Description of the immature stages of nine species of Veturius (Coleoptera: Passalidae).

    Science.gov (United States)

    Salazar-Niño, Karen; Serrão, José Eduardo

    2015-02-26

    The third instar of Veturius aspina Kuwert, V. assimilis (Weber), V. simillimus Kuwert, V. sinuatocollis Kuwert, V. sinuatus (Eschscholtz), V. crassus (Smith), V. impressus Hincks (as well as pupal stage), V. negroensis Boucher, and the first instar of V. oberthuri (Hincks) (Coleoptera: Passalidae) are described for the first time based on specimens from Argentina, Brazil, and Colombia. The most distinctive characters for these species are the presence and distribution of primary setae and the position, number, and size of the teeth of the metathoracic legs. An evident difference in the number of micro-conical projections on the maxillary stipes and measurements of the pars stridens (mesocoxae) suggests that these characters are useful for species identification. We present an identification key to the species of known larval Veturius (13), representing the 17.6% of total species recognized into genus. Light micrographs and scanning electronic micrographs are included for detailed characters.

  3. A Positive Energy Theorem for $P(X, \\phi)$ Theories

    CERN Document Server

    Elder, Benjamin; Khoury, Justin; Tolley, Andrew J

    2014-01-01

    We descibe a positive energy theorem for Einstein gravity coupled to scalar fields with first-derivative interactions, so-called $P(X, \\phi)$ theories. We offer two independent derivations of this result. The first method introduces an auxiliary field to map the theory to a lagrangian describing two canonical scalar fields, where one can apply a positive energy result of Boucher and Townsend. The second method works directly at the $P(X, \\phi)$ level and uses spinorial arguments introduced by Witten. The latter approach follows that of arXiv:1310.1663, but the end result is less restrictive. We point to the technical step where our derivation deviates from theirs. One of the more interesting implications of our analysis is to show it is possible to have positive energy in cases where dispersion relations following from locality and S-Matrix analyticity are violated.

  4. Eau, conflits et coopération

    Directory of Open Access Journals (Sweden)

    Katarina Csefalvayova

    2015-01-01

    Full Text Available A ce jour, si aucun conflit armé n’a eu pour cause principale le partage de l’eau, nombreux sont les bassins fluviaux où le partage transfrontalier des ressources hydriques constitue soit l’une des raisons de l’éclatement d’un conflit armé, soit une cause de tensions susceptible de déboucher sur un conflit armé. Il en va ainsi dans les bassins du Mékong, de l’Euphrate et du Tigre ou encore de l’Amou-Daria et du Syr-Daria. Dans le cadre de cet article, nous allons aborder plus spécifiquement les cas des bassins du Jourdain et du Nil.

  5. Exploration of the Energy Landscape of Acetylcholinesterase by Molecular Dynamics Simulation.

    Science.gov (United States)

    McCammon, J. Andrew

    2002-03-01

    Proteins have rough energy landscapes. Often more states than just the ground state are occupied and have biological functions. It is essential to study these conformational substates and the dynamical transitions among them. Acetylcholinesterase (AChE) is an important enzyme that has biological functions including the termination of synaptic transmission signals. X-ray structures show that it has an active site that is accessible only via a long and narrow channel from its surface. Therefore the fact that acetylcholine and larger ligands can reach the active site is believed to reflect the protein's structural fluctuation. We carried out long molecular dynamics simulations to investigate the dynamics of AChE and its relation to biological function, and compared our results with experiments. The results reveal several "doors" that open intermittantly between the active site and the surface. Instead of having simple exponential decay correlation functions, the time series of these channels reveal complex, fractal gating between conformations. We also compared the AChE dynamics data with those from an AchE-fasciculin complex. (Fasciculin is a small protein that is a natural inhibitor of AChE.) The results show remarkable effects of the protein-protein interaction, including allosteric and dynamical inhibition by fasciculin besides direct steric blocking. More information and images can be found at http://mccammon.ucsd.edu

  6. AFMPB: An adaptive fast multipole Poisson-Boltzmann solver for calculating electrostatics in biomolecular systems

    Science.gov (United States)

    Lu, Benzhuo; Cheng, Xiaolin; Huang, Jingfang; McCammon, J. Andrew

    2013-11-01

    A Fortran program package is introduced for rapid evaluation of the electrostatic potentials and forces in biomolecular systems modeled by the linearized Poisson-Boltzmann equation. The numerical solver utilizes a well-conditioned boundary integral equation (BIE) formulation, a node-patch discretization scheme, a Krylov subspace iterative solver package with reverse communication protocols, and an adaptive new version of the fast multipole method in which the exponential expansions are used to diagonalize the multipole-to-local translations. The program and its full description, as well as several closely related libraries and utility tools are available at http://lsec.cc.ac.cn/~lubz/afmpb.html and a mirror site at http://mccammon.ucsd.edu/. This paper is a brief summary of the program: the algorithms, the implementation and the usage. Restrictions: Only three or six significant digits options are provided in this version. Unusual features: Most of the codes are in Fortran77 style. Memory allocation functions from Fortran90 and above are used in a few subroutines. Additional comments: The current version of the codes is designed and written for single core/processor desktop machines. Check http://lsec.cc.ac.cn/lubz/afmpb.html for updates and changes. Running time: The running time varies with the number of discretized elements (N) in the system and their distributions. In most cases, it scales linearly as a function of N.

  7. A Scan with the EUVE DS Telescope across the High-latitude Molecular Cloud MBM12

    Science.gov (United States)

    Berghoefer, Thomas W.

    We propose to scan across the nearby high-latitude molecular cloud MBM12 and its vicinity with the EUVE Deep Survey (DS) telescope. A distance of 65 pc and an EUV mean free path of ~100 pc in the vicinity of MBM12 makes this an ideal target to apply a newly developed method, based on a differential cloud technique, to measure physical conditions of the hot gas in the local ISM by means of EUVE observations. Snowden, McCammon & Verter (1993) reported the detection of an X-ray shadow in the 3/4 keV diffuse background at the position of MBM12. However, a shadow in the 1/4 keV band, which would surely be present as a consequence of the higher optical depth at lower energies, cannot be seen in the data. This is quite suprising! Stellar reddening measurements of stars in the direction of MBM12 indicate an HI column density that is too low to reveal a shadow at soft X-ray wavelength. However, in the EUV range MBM12 is opaque and the proposed observations shall be used to derive the density and the pressure of the hot gas in the direction of MBM12 and hopefully to provide an explanation for the contradictory results given by Snowden et al.

  8. Limits on the Radiative Decay of Sterile Neutrino Dark Matter from the Unresolved Cosmic and Soft X-ray Backgrounds

    CERN Document Server

    Abazajian, Kevork N; Koushiappas, S M; Hickox, R C; Abazajian, Kevork N.; Markevitch, Maxim; Koushiappas, Savvas M.; Hickox, Ryan C.

    2006-01-01

    We present upper limits on line emission in the Cosmic X-ray background (CXB) that would be produced by decay of sterile neutrino dark matter. We employ the spectra of the unresolved component of the CXB in the Chandra Deep Fields North and South obtained with the Chandra CCD detector in the E=0.8-9 keV band. The expected decay flux comes from the dark matter on the lines of sight through the Milky Way galactic halo. Our constraints on the sterile neutrino decay rate are sensitive to the modeling of the Milky Way halo. The highest halo mass estimates provide a limit on the sterile neutrino mass of m_s<2.9 keV in the Dodelson-Widrow production model, while the lowest halo mass estimates provide the conservative limit of m_s<5.7 keV (2-sigma). We also discuss constraints from a short observation of the softer (E<1 keV) X-ray background with a rocket-borne calorimeter by McCammon and collaborators.

  9. 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

  10. Reconstruction of Aerosol Concentration and Composition from Glacier Ice Cores

    Science.gov (United States)

    Vogel, Alexander; Dällenbach, Kaspar; El-Haddad, Imad; Wendl, Isabel; Eichler, Anja; Schwikowski, Margit

    2017-04-01

    Reconstruction of the concentration and composition of natural aerosol in an undisturbed atmosphere enables the evaluation of the understanding of aerosol-climate effects, which is currently based on highly uncertain emission inventories of the biosphere under pre-industrial conditions. Understanding of the natural state of the pre-industrial atmosphere and evaluating the atmospheric perturbations by anthropogenic emissions, and their potential feedbacks, is essential for accurate model predictions of the future climate (Boucher et al., 2013). Here, we present a new approach for the chemical characterization of the organic fraction preserved in cold-glacier ice cores. From this analysis historic trends of atmospheric organic aerosols are reconstructed, allowing new insights on organic aerosol composition and mass in the pre-industrial atmosphere, which can help to improve climate models through evaluation of our current understanding of aerosol radiative effects. We present results from a proof-of-principal study, analyzing an 800 year ice core record from the Lomonosovfonna glacier ice core, drilled in 2009 in Svalbard, Norway, using a setup that has until then only been applied on offline measurements of aerosol filter extracts (Dällenbach et al., 2016): The melted ice was nebulized and dried, such that aerosols are formed from the soluble and insoluble organic and inorganic compounds that are preserved in the ice. To improve the sensitivity, the aerosol stream was then enriched by the application of an online aerosol concentrator, before the aerosol was analyzed by electron ionization within a high resolution time-of-flight aerosol mass spectrometer (HR-ToF-AMS). We were able to demonstrate that this setup is a quantitative method toward nitrate and sulfate when internal inorganic standards of NH415NO3 and (NH4)234SO4 are added to the sample. Comparison between AMS and IC measurements of nitrate and sulfate resulted in an excellent agreement. The analysis of

  11. Multi-scale continuum modeling of biological processes: from molecular electro-diffusion to sub-cellular signaling transduction

    Science.gov (United States)

    Cheng, Y.; Kekenes-Huskey, P.; Hake, J. E.; Holst, M. J.; McCammon, J. A.; Michailova, A. P.

    2012-01-01

    This paper presents a brief review of multi-scale modeling at the molecular to cellular scale, with new results for heart muscle cells. A finite element-based simulation package (SMOL) was used to investigate the signaling transduction at molecular and sub-cellular scales (http://mccammon.ucsd.edu/smol/, http://FETK.org) by numerical solution of the time-dependent Smoluchowski equations and a reaction-diffusion system. At the molecular scale, SMOL has yielded experimentally validated estimates of the diffusion-limited association rates for the binding of acetylcholine to mouse acetylcholinesterase using crystallographic structural data. The predicted rate constants exhibit increasingly delayed steady-state times, with increasing ionic strength, and demonstrate the role of an enzyme's electrostatic potential in influencing ligand binding. At the sub-cellular scale, an extension of SMOL solves a nonlinear, reaction-diffusion system describing Ca2+ ligand buffering and diffusion in experimentally derived rodent ventricular myocyte geometries. Results reveal the important role of mobile and stationary Ca2+ buffers, including Ca2+ indicator dye. We found that alterations in Ca2+-binding and dissociation rates of troponin C (TnC) and total TnC concentration modulate sub-cellular Ca2+ signals. The model predicts that reduced off-rate in the whole troponin complex (TnC, TnI, TnT) versus reconstructed thin filaments (Tn, Tm, actin) alters cytosolic Ca2+ dynamics under control conditions or in disease-linked TnC mutations. The ultimate goal of these studies is to develop scalable methods and theories for the integration of molecular-scale information into simulations of cellular-scale systems.

  12. 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.

  13. Understanding the source: The nitrogen isotope composition of Type II mantle diamonds

    Science.gov (United States)

    Mikhail, Sami; Howell, Dan; Jones, Adrian; Milledge, Judith; Verchovsky, Sasha

    2010-05-01

    Diamonds can be broadly subdivided into 2 groups based on their nitrogen content; type I with > 10ppm nitrogen and type II with growth nitrogen can be incorporated into diamond as a compatible element in a closed system and therefore the N/C ratio in the source can be depleted by Rayleigh fractionation as the first diamonds to crystallise will partition nitrogen atoms into their lattice as a 1:1 substitution for carbon atoms (type I diamonds). However nitrogen may behave as an incompatible element in diamond (and be a compatible element in the metasomatic fluid), this coupled with an open system would lead to the removal of nitrogen by the metasomatic fluids, thus causing the source to progressively become depleted in nitrogen. Continued diamond crystallization in either system will produce diamonds with ever decreasing nitrogen concentrations with time, possibly to the point of them being almost nitrogen free. 2- It is conceivable that type I & II diamonds found in the same deposit and sharing a common paragenesis (eclogitic or peridotitic) may have formed from different metasomatic fluids in separate diamond forming events. The latter has been proposed for samples from the Cullinan mine (South Africa) based on their carbon isotope compositions (3). Both models can be tested using the stable isotope compositions of carbon and nitrogen with the N/C ratio of the diamonds in a given population with varying nitrogen content (from type I to type II). 1.D. G. Pearson, D. Canil, S. B. Shirey, D. H. Heinrich, K. T. Karl, in Treatise on Geochemistry. (Pergamon, Oxford, 2003), pp. 171-275. 2.C. McCammon, Science 293, 813 (August 3, 2001, 2001). 3.A. E. Moore, South African Journal of Geology 112, 23 (March 1, 2009, 2009).

  14. 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...

  15. ATTACHMENTS IN PROSTHODONTICS: DIFFERENT SYSTEMS OF CLASSIFICATION: A REVIEW

    Directory of Open Access Journals (Sweden)

    Khuthija Khanam

    2014-07-01

    Full Text Available Attachments are mechanical devices for the fixation and stabilisation of a dental prosthesis and include frictional, internal, intracoronal, extracoronal, key-key way, parallel, precision and slotted types. (Boucher 1976. Attachments are used as alternative to clasps in removable partial denture therapy for both aesthetic and functional purpose. Their application is not only limited to removable partial dentures, but has a broader usage in fixed bridges, overdentures, implant supported dentures as well. Hundreds of attachments are available commercially and significant differences exist between them. In this article, different systems of classification of attachments have been reviewed. They are categorised as precision and semi-precision depending on the method of manufacture, intracoronal and extra coronal depending on their location relative to the abutment tooth, rigid and resilient determined by the amount of movement allowed between the component parts, also as stud and bar attachments depending on the design. A classification system to more accurately evaluate differences among resilient attachments has also been described here.

  16. Leituras e quadro hermenêutico

    Directory of Open Access Journals (Sweden)

    Dominique Maingueneau

    2007-01-01

    Full Text Available Cet article réfléchit sur la notion de “lecture” quand celle-ci s’applique à des textes qui relèvent d’un cadre herméneutique, en particulier les textes littéraires, religieux, philosophiques. Pour caractériser les diverses attitudes du lecteur, une distinction est faite entre la “lecture” et la “surlecture”. La lecture peut correspondre à deux pratiques distinctes : la “lecture contractuelle”, qui se contente de lire le texte à travers ses contraintes génériques, et la “lecture hyperprotectrice”, celle que l’on met en œuvre quand on lit un texte qui appartient au patrimoine culturel. De son côté, la surlecture est censée déboucher sur l’énonciation d’un autre texte ; dans le cas de la “superlecture” on lit pour produire des fiches, des résumés, des compte-rendus... ; l’“hyperlecture”, en revanche, est un commentaire qui s’attache à chercher des significations cachées. Cette dernière pratique est illustrée par l’étude du début d’un sermon d’un prédicateur français du XVIII° siècle, N. Massillon.

  17. IERS Conventions (2003)

    Science.gov (United States)

    2004-01-01

    ITRF96,” IERS Technical Note, 24, Observatoire de Paris, Paris. Boucher, C., Altamimi, Z., and Sillard, P., 1999, “The 1997 Interna - tional...1.2× 10−5 Matera 3.0 1.0× 10−5 10.5 3.8 5.7 − 1.2× 10−5 Medicina 2.3 1.0× 10−5 15.5 4.3 4.3 − 1.2× 10−5 Noto 2.2 1.0× 10−5 15.7 4.2 5.0 − 1.2× 10−5...Effelsberg −15.0 −6.8 +0.6 +3.2 Hartebeesthoek −7.8 −5.0 −1.9 +0.1 Madrid −6.0 −2.8 0.0 +1.0 Matera −2.1 0.0 +1.9 +2.6 Medicina −0.8 +2.1 +4.6 +5.6

  18. La vulnérabilité territoriale : une nouvelle approche des risques en milieu urbain

    Directory of Open Access Journals (Sweden)

    Pascale Metzger

    2009-03-01

    Full Text Available L’analyse de vulnérabilité territoriale vise à identifier, caractériser et hiérarchiser les espaces à partir desquels se crée et se diffuse la vulnérabilité au sein d’un territoire. Les politiques de prévention des risques doivent considérer en priorité ces espaces dans la mesure où ils peuvent perturber, compromettre, voire interrompre le fonctionnement et le développement du territoire.L’approche a été développée dans le cadre du programme de recherche « Système d’Information et Risques dans le district métropolitain de Quito », mené entre 1999 et 2004 par l’IRD et la Municipalité de Quito. L’article vise à expliciter cette approche, fondée sur l’identification des enjeux majeurs du territoire et l’analyse de leur vulnérabilité, ainsi que la démarche méthodologique permettant de déboucher sur la cartographie de la vulnérabilité territoriale à Quito.

  19. Inborn errors of metabolism in the biosynthesis and remodelling of phospholipids.

    Science.gov (United States)

    Wortmann, Saskia B; Espeel, Marc; Almeida, Ligia; Reimer, Annette; Bosboom, Dennis; Roels, Frank; de Brouwer, Arjan P M; Wevers, Ron A

    2015-01-01

    Since the proposal to define a separate subgroup of inborn errors of metabolism involved in the biosynthesis and remodelling of phospholipids, sphingolipids and long chain fatty acids in 2013, this group is rapidly expanding. This review focuses on the disorders involved in the biosynthesis of phospholipids. Phospholipids are involved in uncountable cellular processes, e.g. as structural components of membranes, by taking part in vesicle and mitochondrial fusion and fission or signal transduction. Here we provide an overview on both pathophysiology and the extremely heterogeneous clinical presentations of the disorders reported so far (Sengers syndrome (due to mutations in AGK), MEGDEL syndrome (or SERAC defect, SERAC1), Barth syndrome (or TAZ defect, TAZ), congenital muscular dystrophy due to CHKB deficiency (CHKB). Boucher-Neuhäuser/Gordon Holmes syndrome (PNPLA6), PHARC syndrome (ABHD12), hereditary spastic paraplegia type 28, 54 and 56 (HSP28, DDHD1; HSP54, DDHD2; HSP56, CYP2U1), Lenz Majewski syndrome (PTDSS1), spondylometaphyseal dysplasia with cone-rod dystrophy (PCYT1A), atypical haemolytic-uremic syndrome due to DGKE deficiency (DGKE).

  20. 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.

  1. 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.

  2. OPEC and the Middle East: the impact of oil on societal development

    Energy Technology Data Exchange (ETDEWEB)

    Stone, R.A. (ed.)

    1977-01-01

    The book focuses on different aspects of OPEC's impact on development. The chapter comprising Part I, by Russell A. Stone, discusses the potential for development and variations in this potential among the oil countries of the Middle East from a sociological point of view, indicating the wide range of aspects of society that will be affected by oil revenues. The chapters that follow are: Middle East Oil and Changing Political Constellations, Don Peretz; Problems of Transition to Economic Growth and Modernization in Middle Eastern Societies, Robert Sinai; OPEC: Its International Economic Significance, 1974-75, Girgis B. Ghobrial; Development Projects in the Middle East: Domestic Investments Utilizing Oil Revenues, Bertrand P. Boucher; Energy Interdependence and OPEC Government Use of the Foreign Sector, Marwan M. El Nasser; Higher Oil Prices and the Consuming Developing Countries: Consequences, Initiatives, and Potential Energy Policy Actions, Farouk A. Sankari; Kuwait's Economic Development Policies, Khalid M. Jaffar; Patterns of Aid: Kuwait, The Middle East, and the Developing World, Abdo I. Baaklini; Egypt and OPEC, Mohamed El Behairy; Ideology and Politics in Iraqi Oil Policy: The Nationalization of 1972, Abdul H. Raoof; Algeria's Oil Economy: Liberation or Neocolonialism, James A. Paul; The Impact of Oil Revenue on Education in Iran, Manuchehr Afzal. (MCW)

  3. 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...

  4. New interpretation for the determinant formulae of the N=2 superconformal algebras

    CERN Document Server

    Gato-Rivera, Beatriz; Gato-Rivera, Beatriz; Rosado, Jose Ignacio

    1996-01-01

    We prove that the usual interpretation given for the N=2 determinant formulae, first due to Boucher, Friedan and Kent, must be corrected. The key fact is the spectral flow automorphism of the Twisted Topological algebra, mapping singular states into singular states, which implies after the untwisting that the charged and uncharged singular states of the Aperiodic NS algebra, built on chiral or antichiral primaries, must come in pairs. This fact is not accounted for by the spectra of singular states proposed by BFK. The actual computation of singular states agrees with the predictions of the topological algebra automorphism implying that at any semi-integer level (except 1/2) there exist at least two charged h.w. singular states outside the vanishing plane g^A_k=0, sitting rather on the quadratic vanishing surface f^A_{r,s}=0. We write down the correct spectra of singular states for the Twisted Topological algebra and for the Aperiodic NS algebra for singular states built on chiral and antichiral primaries.

  5. 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

  6. ["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

  7. 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

  8. Nitrogen Compounds in Radiation Chemistry

    Energy Technology Data Exchange (ETDEWEB)

    Sims, H.E. [NNL Sellafield (United Kingdom); Dey, G.R. [Radiation and Photochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400085 (India); Vaudey, C.E.; Peaucelle, C. [Institut de Physique Nucleaire de Lyon - IPNL, 69 - Lyon (France); Boucher, J.L. [Lab. de Chimie et Biochimie Pharmacologiques et Toxicologiques, UMR 8601 CNRS 45 rue des Saints Peres, 75270 Paris cedex 06, Univ Paris 5, 75 (France); Toulhoat, N. [Institut de Physique Nucleaire de Lyon (France); Commissariat a l' Energie Atomique CEA/DEN, Centre de Saclay (France); Bererd, N. [Institut de Physique Nucleaire de Lyon (France); IUT Departement Chimie, Universite Claude Bernard Lyon 1 (France); Koppenol, W.H. [Department of Chemistry and Applied Biosciences, ETH Zurich (Switzerland); Janata, E. [Helmholtz-Zentrum fuer Materialien und Energie, Solar Energy Research, Berlin (Germany); Dauvois, V.; Durand, D.; Legand, S.; Roujou, J.L.; Doizi, D.; Dannoux, A.; Lamouroux, C. [Laboratoire de Speciation des Radionucleides et des Molecules, DEN/DPC/Service d' Etude du Comportement des Radionucleides, CEA Saclay, 91 - Gif sur yvette (France)

    2009-07-01

    Water radiolysis in presence of N{sub 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{sub 2} and moreover in absence of oxygen there is no agreement on the formation or not of nitrogen oxide like NO{sub 2}- and NO{sub 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{sub 2}O saturated aqueous solution'; - V. DAUVOIS: 'Analytical strategy for the study of radiolysis gases'

  9. 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.

  10. 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.

  11. The clinical spectrum of inherited diseases involved in the synthesis and remodeling of complex lipids. A tentative overview.

    Science.gov (United States)

    Garcia-Cazorla, Àngels; Mochel, Fanny; Lamari, Foudil; Saudubray, Jean-Marie

    2015-01-01

    Over one hundred diseases related to inherited defects of complex lipids synthesis and remodeling are now reported. Most of them were described within the last 5 years. New descriptions and phenotypes are expanding rapidly. While the associated clinical phenotype is currently difficult to outline, with only a few patients identified, it appears that all organs and systems may be affected. The main clinical presentations can be divided into (1) Diseases affecting the central and peripheral nervous system. Complex lipid synthesis disorders produce prominent motor manifestations due to upper and/or lower motoneuron degeneration. Motor signs are often complex, associated with other neurological and extra-neurological signs. Three neurological phenotypes, spastic paraparesis, neurodegeneration with brain iron accumulation and peripheral neuropathies, deserve special attention. Many apparently well clinically defined syndromes are not distinct entities, but rather clusters on a continuous spectrum, like for the PNPLA6-associated diseases, extending from Boucher-Neuhauser syndrome via Gordon Holmes syndrome to spastic ataxia and pure hereditary spastic paraplegia; (2) Muscular/cardiac presentations; (3) Skin symptoms mostly represented by syndromic (neurocutaneous) and non syndromic ichthyosis; (4) Retinal dystrophies with syndromic and non syndromic retinitis pigmentosa, Leber congenital amaurosis, cone rod dystrophy, Stargardt disease; (5) Congenital bone dysplasia and segmental overgrowth disorders with congenital lipomatosis; (6) Liver presentations characterized mainly by transient neonatal cholestatic jaundice and non alcoholic liver steatosis with hypertriglyceridemia; and (7) Renal and immune presentations. Lipidomics and molecular functional studies could help to elucidate the mechanism(s) of dominant versus recessive inheritance observed for the same gene in a growing number of these disorders.

  12. 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

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

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    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.

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

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    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.

  15. Long term trends of CCN concentration in Arctic region at Zeppelin station, Ny-Ålesund, Svalbard

    Science.gov (United States)

    Jung, C. H.; Yoon, Y. J.; Kang, H. J.; Gim, Y. T.; Lee, B. Y.; Ström, J.; Krejci, R.; Tunved, P.

    2015-12-01

    The Arctic is a challenging region when assessing aerosol impacts due to their large variations in concentration, and varying chemical, physical and optical properties. In the climate effects of atmosphere aerosol indirect force, cloud condensation nuclei (CCN) play an important role because particles acting as they can grow to cloud droplets by condensation of water vapor, affecting cloud properties in various ways. For example, the increased CCN concentrations lead to the production of more numerous and smaller cloud drops, which can result in optically thicker clouds that tend to reflect more incoming solar radiation back to space (Twomey, 1977). Thus, investigating the physical process of the CCN aerosol that controls cloud droplet formation is important in understanding the radiative transfer and climate effect. In addition, there are still large variabilities in Arctic CCN number concentrations remaining. These variabilities are mainly due to the result of varying aerosol sources and chemical composition (Browse et al., 2012). Especially, the analysis on the long term trends as well as seasonality of CCN and relation with aerosols are very rare and need to be investigated. In this study, CCN concentration data collected at the Zeppelin observatory located on the top of Mt. Zeppelin, Svalbard (78° 54' N, 11° 53' E) are analyzed during 2007-2013. The seasonal and yearly trends of CCN in the Arctic region during the long periods are presented. The obtained results are compared with other instrumental data such as aerosol size distribution and total number concentration. ReferenceBrowse, J., Carslaw, K. S., Arnold, S. R., Pringle, K., and Boucher, O, 2012, The scavenging processes controlling the seasonal cycle in Arctic sulphate and black carbon aerosol, Atmos. Chem. Phys., 12, 6775-6798. Twomey, S., 1977: Atmospheric Aerosols. Elsevier.

  16. Molecular dynamics simulations of Palmitic acid adsorbed on NaCl

    Science.gov (United States)

    Lovrić, Josip; Brizquez, Stéphane; Duflot, Denis; Monnerville, Maurice; Pouilly, Brigitte; Toubin, Céline

    2015-04-01

    The aerosol and gases effects in the atmosphere play an important role on health, air quality and climate, affecting both political decisions and economic activities around the world [1]. Among the several approaches of studying the origin of these effects, computational modeling is of fundamental importance, providing insights on the elementary chemical processes. Sea salts are the most important aerosol in the troposphere (109T/year) [2]. Our theoretical work consists in modeling a (100) NaCl surface coated with palmitic acid (PA) molecules. Molecular dynamics simulations are carried out with the GROMACS package [3], in the NPT ensemble at different temperatures, different PA coverages and various humidity. We focus on two aspects of the PA organization at the salt surface: the first one is related to transition in molecular orientation of the adsorbate as a function of PA coverage. The second one implies the effect of humidity, by adding water molecules, on the organization of the fatty acid at the salt surface, and especially on the occurrence of PA isolated islands as observed in the experiments [4]. For high humidity conditions, PA are removed from the salt surface and form islands on top of the water. This effect is enhanced when temperature increases. Acknowledgments: this research has been supported by the CaPPA project (Chemical and Physical Properties of the Atmosphere), funded by the French National Research Agency (ANR) through the PIA (Programme d'Investissement d'Avenir) under contract ANR-10-LABX-005. [1] O. Boucher et al, 5th Assessment Report IPCC, (2013) [2] B. J. Finlayson-Pitts, Chem. Rev.103, 4801-4822 (2003) [3] http://www.gromacs.org/ [4] S. Sobanska et al, private communication

  17. Comparison of two field tests to estimate maximum aerobic speed.

    Science.gov (United States)

    Berthoin, S; Gerbeaux, M; Turpin, E; Guerrin, F; Lensel-Corbeil, G; Vandendorpe, F

    1994-08-01

    The measurement of maximal aerobic speed (MAS) and the prediction of maximal oxygen uptake (VO2 max) by means of field tests were carried out on 17 students studying physical education. The subjects underwent a continuous multi-stage track test (Léger and Boucher, 1980), shuttle test (Léger et al., 1984) and VO2 max measurement on a treadmill. The VO2 max values estimated using the track test (56.8 +/- 5.8 ml kg-1 min-1) were not significantly different from the values measured in the treadmill test (56.8 +/- 7.1 ml kg-1 min-1), but were higher than those estimated using the shuttle test (51.1 +/- 5.9 ml kg-1 min-1). The maximal nature of the tests was checked by measurement of heart rate and lactate concentration, taken within 2 min post-test. The means of the MAS observed in the track test (15.8 +/- 1.9 km h-1) and in the treadmill test (15.9 +/- 2.6 km h-1) were not significantly different (P > 0.10). The mean of the shuttle test MAS (13.1 +/- 1 km h-1) was significantly lower (P < 0.01) than those of the other tests. However, the MAS of the shuttle test and track test are linked. The equation for linear regression between MAS values in these two tests is MAStrack = 1.81 x MASshuttle -7.86 (r = 0.91), allowing estimation of one of these MAS values when the other is known. Thus these values may be used within diversified training.

  18. Temperature Dependent Mössbauer Spectra of Aluminous Perovskite and Implications for the Earth's Lower Mantle

    Science.gov (United States)

    Liu, J.; Mysen, B. O.; Fei, Y.; Mao, H.; Hemley, R. J.; Li, J.

    2011-12-01

    Perovskite in the Earth's lower mantle contains 4.0~5.3 weight % Al (Wood and Rubie, Science. 1996). To date Mössbauer data on Al-PV under cryogenic conditions have not been reported. In this study, we measured Mössbauer spectra of an Al-PV sample at 65 to 300 K and 1 bar. The temperature dependence of the center shift, fitted by Debye model, gives recoil-free fractions of fFe2+ and fFe3+, which are critical for calculating Fe3+/⊙Fe ratio. The high relative concentration of Fe3+ of our Al-PV sample is consistent with previous studies on Al-PV samples containing a similar amount of aluminum (Lauterbach et al., Contrib Mineral Petrol. 2000). However, it cannot be attributed to disproportionation of Fe2+ (Frost et al., Nature. 2004), because neither metallic iron nor wüstite was observed in the Mössbauer spectra or electron probe analysis. In comparison to other capsule materials used in previous studies, such as graphite, iron, or rhenium, the gold capsule used in our synthesis is chemically inert, and does not influence the oxidation environment. A likely candidate to oxidize Fe2+ into Fe3+ in PV structure is H2O trapped as moisture. Earth's lower mantle may contain 2.5~5 times H2O of the present ocean's mass (Murakami et al., Science. 2002; Litasov et al., Earth Planet. Sci. Lett. 2003), a high Fe3+/⊙Fe ratio in lower mantle Al-PV can be achieved without disproportionation of Fe2+. Recent studies (McCammon et al., Nature Geosci. 2008; Lin et al., Nature Geosci. 2008) found a high quadrupole splitting (QS) (~4 mm s-1) component in Al-free PV at pressures above 30 GPa, and assigned it to intermediate-spin ferrous iron. The high QS component in our Al-PV sample has similar hyperfine parameters. Its relative concentration changes with temperature, possibly due to a temperature-induced change in the degree of lattice distortion (Bengtson et al., Geophys. Res. Lett. 2009).

  19. A relação entre o nível de condicionamento aeróbico, execução de uma pista de obstáculos e o rendimento em um teste de tiro La relación entre el nivel de acondicionamiento aeróbico, ejecución de una pista de obstáculos y el rendimiento en un test de tiro Relationship between the level of the aerobic conditioning, performance on an obstacle course, and outcome in a shooting test

    Directory of Open Access Journals (Sweden)

    Adriano da Costa Dias

    2005-12-01

    Full Text Available A preparação do militar para o combate é baseada na instrução militar que tem como fundamento a representação do campo de batalha. Entre as principais instruções estão a pista de obstáculos e a execução do tiro. O objetivo deste estudo foi verificar a influência do nível de condicionamento aeróbico sobre o rendimento na execução de uma pista de obstáculos e a realização de um teste de tiro em integrantes do Exército Brasileiro. Procurou-se, também, verificar a influência da execução de uma pista de obstáculos sobre a execução de um teste de tiro. O citado rendimento foi avaliado pelo tempo de execução de uma pista de obstáculos e resultado no teste de tiro (considerou-se a diferença entre o resultado do tiro pós e pré-esforço como índice de performance no tiro IPT. A amostra foi constituída de 28 militares homens, de 19 a 20 anos de idade. Inicialmente foi estimado o VO2máx dos indivíduos por meio do teste de Léger-Boucher. Posteriormente os militares da amostra executaram um teste de tiro, uma pista de obstáculos e, novamente, um teste de tiro. Verificou-se uma diferença significativa entre o tiro pré-esforço e pós-esforço (43,79 ± 4,02 para 40,54 ± 4,10 pontos, p La preparación del ejército para combate esta basado en la instrucción militar que el soldado tiene como fundamento en la representación del campo de batalla. Entre las instrucciones principales ellos son la pista de obstáculos y la ejecución del tiro. El objetivo de este estudio es el de verificar la influencia del nivel de acondicionamiento de ejercicio aeróbico en el ingreso en la ejecución de una pista de obstáculos y el logro de una prueba del tiro en los miembros del Ejército brasileño. Se buscaba además, verificar la influencia de la ejecución de una pista de obstáculos en la ejecución de una prueba del tiro. El estudio mencionado fue evaluado cuando se realizaron pruebas de ejecución de una pista de obstáculos y

  20. 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

  1. [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

    2015-01-01

    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

  2. Information Content Analysis for the Multi-Viewing, Multi-Channel, Multi-Polarization Imaging (3MI) Instrument : Toward Retrieval of Vertically Resolved Cloud Properties from Passive Only Measurements.

    Science.gov (United States)

    Riedi, J.; Merlin, G.; Labonnote, L.; Cornet, C.; Ferlay, N.; Desmons, M.; Dubuisson, P.; Parol, F.; Davis, A. B.; Marbach, T.

    2014-12-01

    The EUMETSAT Polar System- Second Generation (EPS-SG) is currently under development to take over the current EUMETSAT Polar System at the 2020 horizon. As part of it, the Multi-Viewing Multi-Channel Multi-Polarization Imaging mission (3MI) will be dedicated to the operational monitoring of aerosols but will also provide unique observations for characterization of cloud properties building on the legacy of POLDER and particularly of its 3rd mission (PARASOL) within the A-Train. Through the synergy of POLDER3/PARASOL and MODIS/AQUA several studies have demonstrated the great interest of combining multispectral, multiangle and polarization measurements in the visible, near and shortwave infrared to better constrain retrieval of clouds microphysical and macrophysical properties. Remote-sensing of cloud thermodynamic phase (Riedi et al, 2010), liquid (Bréon and Doutriaux-Boucher, 2005) or ice clouds microphysics (Zhang et al, 2009; Cole et al, 2012), cloud radiative (Zeng et al, 2012) or macrophysical properties (Ferlay et al, 2010; Desmons et al, 2013) can unarguably benefit from the additional information content brought by polarization and multiangle measurements. At the same time, retrieval algorithms are gaining further complexity and skills. Thanks to availability of computational resources, practical implementation of optimal estimation or related optimization techniques (Delanoe & Hogan, 2008; Dubovik et al, 2013) have appeared that allow simultaneous and consistent retrieval of larger sets of parameters from constantly growing observations vectors. Therefore 3MI observations will not only allow to improve accuracy of future cloud products but also opens perspectives for the development of new retrieval algorithms. A major challenge for cloud remote-sensing from passive measurements is to obtain information on clouds properties vertical distribution and structure. Through results of a comprehensive information content analysis we will illustrate our current

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

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    Franz MJ

    2014-02-01

    Full Text Available 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 as well as systematic and Cochrane reviews report a ~1%–2% lowering of hemoglobin A1c values as well as other beneficial outcomes from nutrition therapy interventions, depending on the type and duration of diabetes and level of glycemic control. Clinical trials also provide evidence for the effectiveness of nutrition therapy in the prevention of diabetes. Second, are weight loss interventions important and when are they beneficial? Modest weight loss is important for the prevention of type 2 diabetes and early in the disease process. However, as diabetes progresses, weight loss may or may not result in beneficial glycemic and cardiovascular outcomes. Third, are there ideal percentages of macronutrients and eating patterns that apply to all persons with diabetes? There is no ideal percentage of macronutrients and a variety of eating patterns has been shown to be effective for persons with diabetes. Treatment goals, personal preferences (eg, tradition, culture, religion, health beliefs, economics, and the individual's ability and willingness to make lifestyle changes must all be considered by clinicians and/or educators when counseling and educating individuals with diabetes. A healthy eating pattern emphasizing nutrient-dense foods in appropriate portion sizes, regular physical activity, and support are priorities for all individuals with diabetes. Reduced energy intake for persons with prediabetes or type 2 diabetes as well as matching insulin to planned

  4. 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

  5. Cloud-microphysical sensors intercomparison at the Puy-de-Dôme Observatory, France

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    G. Guyot

    2015-06-01

    Full Text Available Clouds play an important role on the radiative budget of the earth (Boucher et al., 2013. Since the late 70s, several instrumental developments have been made in order to quantify the microphysical and optical properties of clouds, for both airborne and ground-based applications. However, the cloud properties derived from these different instrumentations have rarely been compared. In this work, we discuss the results of an intercomparison campaign, performed at the Puy de Dôme during May 2013. During this campaign, a unique set of cloud instruments were compared. Two Particle Volume Monitors (PVM-100, a Forward Scattering Spectrometer Probe (FSSP, a Fog Monitor (FM-100 and a Present Weather Detector (PWD were sampling on the roof of the station. Within a wind tunnel located underneath the roof, two Cloud Droplet Probes (CDP and a modified FSSP (SPP-100 were operating. The main objectives of this paper are to study the effects of wind direction and speed on ground based cloud observations, to quantify the cloud parameters discrepancies observed by the different instruments, and to develop methods to improve the quantification of the measurements. The results reveal that all instruments, except one PVM, show a good agreement in their sizing abilities, both in term of amplitudes and variability. However, some of them, especially the FM-100, the FSSP and the SPP, display large discrepancies in their capability to assess the cloud droplet number concentrations. As a result, the total liquid water content can differ by up to a factor of 5 between the probes. The use of a standardization procedure, based on data of integrating probes (PVM-100 or visibilimeter and extinction coefficient comparison, substantially enhances the instrumental agreement. During the intercomparison campaign, the total concentration agreed in variations with the visibilimeter, except for the FSSP, so corrective factor can be applied and range from 0.43 to 2.2. This

  6. 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

  7. Abstract: Magnetic solitons' contribution to the specific heat of (CH3)4NMnCl3 in an external magnetic field

    Science.gov (United States)

    Borsa, F.

    1982-03-01

    It has been shown theoretically that linear magnetic systems with planar anisotropy should display nonlinear excitations, i.e., sine-Gordon solitons upon application of a magnetic field perpendicular to the chain axis. Experimental evidence for ID magnetic solitons has been presented for TMMC from neutron scattering and NMR measurements.1 The classical statistical mechanics of this system predict a soliton contribution to the free energy and thus to the specific heat.2 In order to test experimentally the thermodynamic relevance of magnetic solitons, I performed measurements of specific heat in single crystal TMMC in an external magnetic field up to 10 Tesla, applied both perpendicular and parallel to the chain. The measurements were performed with an adiabatic calorimeter in the temperature range 1.5-15 °K. The results show an extra contribution for H⊥c not present for H∥c. This contribution displays a broad maximum which scales approximately as H/T in agreement with the theory. The maximum occurs just above the peak in the specific heat which is observed in correspondence to the three-dimensional transition temperature, and it can be clearly resolved only for H⩾5.0 T. The soliton energy obtained by fitting the experiments to the classical theory is Es = 2.0 H for H = 5.39 T and Es = 1.8 H for H = 10 T to be compared with the theoretical value of Es = gμBHS = 3.35 H and with the value obtained by neutron scattering at H = 3.2 T, i.e., Es = 2.6 H. The discrepancy between theory and experiment is discussed in terms of renormalization corrections and of a possible soliton instability occurring for fields between 3 and 5 T. a)Permanent address: Institut di Fisica, Universita di Pavia, 27100 Pavia, Italy. 1J. P. Boucher, L. P. Regnault, J. Rossad Miguod, J. P. Renard, J. Bouillot, and W. G. Stirling, J. Appl. Phys. 52, 1956 (1981). 2K. M. Leung, D. Hone, D. L. Mills, P. S. Riseborough, and S. E. Trullinger, Phys. Rev. B 21, 4017 (1980).

  8. 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.

  9. Geophysical Fluid Dynamics Laboratory general circulation model investigation of the indirect radiative effects of anthropogenic sulfate aerosol

    Science.gov (United States)

    Ming, Yi; Ramaswamy, V.; Ginoux, Paul A.; Horowitz, Larry W.; Russell, Lynn M.

    2005-11-01

    The Geophysical Fluid Dynamics Laboratory (GFDL) atmosphere general circulation model, with its new cloud scheme, is employed to study the indirect radiative effect of anthropogenic sulfate aerosol during the industrial period. The preindustrial and present-day monthly mean aerosol climatologies are generated from running the Model for Ozone And Related chemical Tracers (MOZART) chemistry-transport model. The respective global annual mean sulfate burdens are 0.22 and 0.81 Tg S. Cloud droplet number concentrations are related to sulfate mass concentrations using an empirical relationship (Boucher and Lohmann, 1995). A distinction is made between "forcing" and flux change at the top of the atmosphere in this study. The simulations, performed with prescribed sea surface temperature, show that the first indirect "forcing" ("Twomey" effect) amounts to an annual mean of -1.5 W m-2, concentrated largely over the oceans in the Northern Hemisphere (NH). The annual mean flux change owing to the response of the model to the first indirect effect is -1.4 W m-2, similar to the annual mean forcing. However, the model's response causes a rearrangement of cloud distribution as well as changes in longwave flux (smaller than solar flux changes). There is thus a differing geographical nature of the radiation field than for the forcing even though the global means are similar. The second indirect effect, which is necessarily an estimate made in terms of the model's response, amounts to -0.9 W m-2, but the statistical significance of the simulated geographical distribution of this effect is relatively low owing to the model's natural variability. Both the first and second effects are approximately linearly additive, giving rise to a combined annual mean flux change of -2.3 W m-2, with the NH responsible for 77% of the total flux change. Statistically significant model responses are obtained for the zonal mean total indirect effect in the entire NH and in the Southern Hemisphere low

  10. 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.

  11. Hyper-Raman spectroscopy of Earth related materials

    Science.gov (United States)

    Hellwig, H.

    2004-12-01

    conventional Raman and hyper-Raman are complimentary. In many cases the combined information of both techniques can reveal all the vibrational information of a material. This information can be used to calculate thermodynamic properties, to identify mineral phases ('finger-printing'), or to investigate the dynamics related to phase transitions ('soft-modes'). First results on planetary materials will be presented, including MgO and stichovite. Corundum as another possible high pressure transmitting material is characterized as well. Further measurements are underway, including MgSiO3 and CaSiO3 perovskite. [1] A. M. Hofmeister, in: Infrared Spectroscopy in Geochemistry, Exploration Geochemistry, and Remote Sensing, Vol. 33 (ed. P. K. King, M. S. Ramsey, and G. A. Swayze), Mineralogical Society of Canada (2004) [2] P. F. McMillan, R. J. Hemley, and P. Gillet, in : Mineral Spectroscopy: A Tribute to Roger G. Burns, Vol. 5 (ed. D. Dyar, C. McCammon, and M. W. Schaefer), The Geochemical Society Special Publication (1996). [3] H. Vogt, in: Topics in Applied Physics, Vol. 50, Light scattering in solids II (ed. M. Cardonna and G. Guentherodt), Springer-Verlag, Heidelberg, New York (1982).

  12. 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.

  13. Where is mantle's carbon?

    Science.gov (United States)

    Oganov, A. R.; Ono, S.; Ma, Y.

    2008-12-01

    Due to the strongly reducing conditions (the presence of metallic iron was suggested both by experiments [1] and theory [2]), diamond was believed to be the main host of carbon through most of the lower mantle [3]. We showed [4] that cementite Fe3C is another good candidate to be the main host of "reduced" carbon in the mantle, reinforcing an earlier hypothesis [5]. The fate of "oxidised" carbon (in subducted slabs) is of particular importance - if carbonates decompose producing fluid CO2, this would have important implications for the chemistry and rheology of the mantle. Knowledge of crystal structures and phase diagrams of carbonates is crucial here. The high-pressure structures of CaCO3 were predicted [6] and subsequently verified by experiments. For MgCO3, Isshiki et al. [7] found a new phase above 110 GPa, and several attempts were made to solve it [8,9]. Here [4], using an evolutionary algorithm for crystal structure prediction [10], we show that there are two post-magnesite phases at mantle-relevant pressure range, one stable at 82-138 GPa, and the other from 138 GPa to ~160 GPa. Both are based on threefold rings of CO4-tetrahedra and are more favourable than all previously proposed structures. We show that through most of the P-T conditions of the mantle, MgCO3 is the major host of oxidized carbon in the Earth. We predict the possibility of CO2 release at the very bottom of the mantle (in SiO2-rich basaltic part of subducted slabs), which could enhance partial melting of rocks and be related to the geodynamical differences between the Earth and Venus. 1.Frost D.J., Liebske C., Langenhorst F., McCammon C.A., Tronnes R.G., Rubie D.C. (2004). Experimental evidence for the existence of iron-rich metal in the Earth's lower mantle. Nature 428, 409-412. 2.Zhang F., Oganov A.R. (2006). Valence and spin states of iron impurities in mantle-forming silicates. Earth Planet. Sci. Lett. 249, 436-443. 3.Luth R.W. (1999). Carbon and carbonates in the mantle. In: Mantle

  14. A new algorithm for automatic Outlier Detection in GPS Time Series

    Science.gov (United States)

    Cannavo', Flavio; Mattia, Mario; Rossi, Massimo; Palano, Mimmo; Bruno, Valentina

    2010-05-01

    confirm that the algorithms are effective and reasonable. Bibliography - Aloisi M., A. Bonaccorso, F. Cannavò, S. Gambino, M. Mattia, G. Puglisi, E. Boschi, A new dyke intrusion style for the Mount Etna May 2008 eruption modelled through continuous tilt and GPS data, Terra Nova, Volume 21 Issue 4 , Pages 316 - 321, doi: 10.1111/j.1365-3121.2009.00889.x (August 2009) - Altamimi Z., Sillard P., Boucher C., ITRF2000: A new release of the International Terrestrial Reference frame for earth science applications, J Geophys Res-Solid Earth, 107 (B10): art. no.-2214, (Oct 2002) - Elósegui, P., J. L. Davis, D. Oberlander, R. Baena, and G. Ekström , Accuracy of high-rate GPS for seismology, Geophys. Res. Lett., 33, L11308, doi:10.1029/2006GL026065 (2006) - Wei W. S., Time Series Analysis: Univariate and Multivariate Methods, Addison Wesley (2 edition), ISBN-10: 0321322169 (July, 2005)

  15. 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

  16. Global distribution and Gas-particle Partitioning of Polycyclic Aromatic Hydrocarbons - a Modelling Study

    Science.gov (United States)

    Lammel, G.; Sehili, A. M.

    2009-04-01

    organic matter and adsorption to black carbon (soot) to determine gas-particle partitioning. PAHs are multi-hopping to some extent and volatilization from ground exceeds deposition over dry parts of the continents and some sea regions at least seasonally. Bond T.C., Streets D.G., Yarber K.F., Nelson S.M., Woo J.H., Klimont Z. (2004), J. Geophys. Res. 109, D14203, doi:10.1029/2003JD003697 Lohmann R., Lammel G. (2004), Environ. Sci. Technol. 38, 3793-3803 Pankow J.F. (1987), Atmos. Environ. 21, 2275-2283 Sehili A.M., Lammel G. (2007), Atmos. Environ. 41, 8301-8315. Semeena V.S., Feichter J., Lammel G. (2006), Atmos. Chem. Phys. 6, 1231-1248 Stier P., Feichter J., Kinne S., Kloster S., Vignati E., Wilson J., Ganzeveld L., Tegen I., Werner M., Schulz M., Balkanski Y., Boucher O., Minikin A., Petzold A. (2005), Atmos. Chem. Phys. 5, 1125-1156

  17. Simulation of Arctic mixed-phase clouds with the ECHAM GCM

    Science.gov (United States)

    Ickes, Luisa; Lohmann, Ulrike; Hoose, Corinna

    2013-04-01

    . Possible roles of ice nucleation mode and ice nuclei depletion in the extended lifetime of arctic mixed-phase clouds. Geophys. Res. Lett., 32(18), 2005. [3] U. Lohmann and C. Hoose. Sensitivity studies of different aerosol indirect effects in mixed-phase clouds. Atmos. Chem. Phys., 9:8917-8934, 2009. [4] P. Stier, J. Feichter, S. Kinne, S. Kloster, E. Vignati, J. Wilson, L. Ganzeveld, I. Tegen, M. Werner, Y. Balkanski, M. Schulz, O. Boucher, A. Minikin, and A. Petzold. The aerosol-climate model echam5-ham. Atmos. Chem. Phys., 5(4):1125-1156, 2005. [5] J.-P. Chen, A. Hazra, and Z. Levin. Parameterizing ice nucleation rates using contact angle and activation energy derived from laboratory data. Atmos. Chem. Phys., 8(24):7431-7449, 2008.

  18. 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.

  19. 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

  20. Hydrological data assimilation using Extreme Learning Machines

    Science.gov (United States)

    Boucher, Marie-Amélie; Quilty, John; Adamowski, Jan

    2017-04-01

    state variables (snow calorific deficit and the percentage of the watershed covered by snow). In order to verify the general applicability of the proposed method, it is applied to five watersheds in contrasting hydro-climatic contexts (e.g., nordic, semi-arid, humid, and temperate). We show that the ELMs can be used to successfully update GR4J's state variables, in all cases. Considering the ensemble mean as a deterministic forecast, the Mean Absolute Error between simulated and observed streamflow can be reduced by up to 30 %. We also show that the success of the method is highly dependent on adequate selection of input variables for the ELMs. Overall, this new data assimilation method offers good performance with low computational costs. References Thiboult, A., Anctil, F. and Boucher, M.-A. (2016) Accounting for three sources of uncertainty in ensemble hydrological forecasting, Hydrology and Earth System Sciences, 20(5), 1809-1825. Zang, K. and Liu, M. (2015) Outlier-robust extreme learning machine for regression problems, Neurocomputing, 151, part 3, 1519-1527.

  1. Identités collectives ; territoires et mémoires Collective Identities, Places, MemoryAnalysing working lives and social identities changes through local Memory

    Directory of Open Access Journals (Sweden)

    Sylvie Contrepois

    2011-12-01

    Full Text Available Quel éclairage spécifique apportent les productions et les initiatives visant à préserver la mémoire locale dans l’analyse des transformations qui affectent les sociétés contemporaines ? Nous abordons cette question à partir d’une recherche menée dans le cadre d’un projet européen portant sur l’articulation des identités régionales, nationales et européennes au travers du travail et des communautés d’appartenance dans des régions subissant des processus de restructurations et de transformations économiques (Projet SPHERE : www.sphereeurope.eu. La conduite de ce projet repose notamment sur la mise en place de comités de pilotage dans chacun des pays partenaires et doit déboucher sur d’importants efforts de valorisation en direction des populations locales.Le terrain d’enquête retenu en France est constitué par deux communautés d’agglomérations voisines de la région parisienne, celles d’Evry et celle de Corbeil-Essonnes. Si la première symbolise l’ère du tertiaire et le renouveau urbain apporté par les villes nouvelles, la seconde porte encore les traces d’un passé industriel prestigieux. Leur contiguïté représente une formidable opportunité d’analyser les continuités et discontinuités de l’histoire des transformations du travail et des identités sociales.Les président(es de quatre associations d’histoire et de mémoire locale ont été mobilisés pour ce faire au sein du comité de pilotage de la recherche. Pour la première fois les matériaux et connaissances produits par chacune des associations sont directement confrontés et exploités ensemble, simultanément aux données produites par le chercheur. Nous rendons compte ici de cette démarche et de ses résultats.To what extent do attempts to preserve local memory help highlight the ways contemporary societies change ? This question is at the core of a European research project on the historical and contemporary articulations

  2. 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

  3. Impedance spectroscopy analysis on electrical properties of serpentine at high pressure and high temperature

    Institute of Scientific and Technical Information of China (English)

    ZHU; Maoxu; (

    2001-01-01

    , J. R., Johnson, W. B., Fundamentals of impedance spectroscopy, in Impedance Spectroscopy (ed. Macdonald, J. R.), New York: John Wiley & Sons, 1987, 1-26.[14] Duba, A., Constable, S., The electrical conductivity of lherzolite, J. Geophys. Res., 1993, 98(B7): 11885-11899.[15] Roberts, J. J., Tyburczy, J. A., Frequency dependent electrical properties of dunite as functions of temperature and oxygen fugacity, Phys. Chem. Minerals, 1993, 19: 545-561.[16] Sato, H., Ida, Y., Low frequency electrical impedance of partially molten gabbro: The effect of melt geometry on electrical properties, Tectonophysics, 1984, 107: 105-134.[17] Xu, Y-S, McCammon, C., Poe, B. T., The effect of alumina on the electrical conductivity of silicate perovskite, Science, 1998, 282: 922-924.[18] Li, X-Y, Ming, L-C, Manghnan, M. H. et al., Pressure dependence of the electrical conductivity of (Mg0.9Fe0.1)SiO3 perov-skite, J. Geophys. Res., 1993, 98(B1): 501-508.[19] Popp, T., Kern, H., Thermal dehydration reactions characterised by combined measurements of electrical conductivity and elastic wave velocities, Earth Planet Sci. lett., 1993, 120: 43-57.[20] Gu Zhijuan, Guo Caihua, Li Biao et al., Primary studies on the genesis of the low-velocity and highly conductive layers in the crust, Science in China, Series B (in Chinese), 1995, 25(1): 108-112.[21] Duba, A., Heikamp, S., Meurer, W. et al., Evidence from borehole samples for the role of accessory minerals in lower-crustal conductivity, Nature, 1994, 357: 59-61.[22] Shankland, T. J., Duba, A. G., Mathez, E. A. et al., Increase of electrical conductivity with pressure as an indictor of con-duction through a solid phase in midcrustal rocks, J. Geophys. Res., 1997, 102(B7): 14741-14750.

  4. Comparison of the performance and reliability of 18 lumped hydrological models driven by ECMWF rainfall ensemble forecasts: a case study on 29 French catchments

    Science.gov (United States)

    Velázquez, Juan Alberto; Anctil, François; Ramos, Maria-Helena; Perrin, Charles

    2010-05-01

    Earth Syst. Sci., 8, 281-291, 2008. Matheson, J. E. and Winkler, R. L.: Scoring rules for continuous probability distributions, Manage Sci., 22, 1087-1096, 1976. Perrin, C., Michel C. and Andréassian,V. Does a large number of parameters enhance model performance? Comparative assessment of common catchment model structures on 429 catchments, J. Hydrol., 242, 275-301, 2001. Renner, M., Werner, M. G. F., Rademacher, S., and Sprokkereef, E.: Verification of ensemble flow forecast for the River Rhine, J. Hydrol., 376, 463-475, 2009. Roulin, E. and Vannitsem, S.: Skill of medium-range hydrological ensemble predictions, J. Hydrometeorol., 6, 729-744, 2005. Talagrand, O., Vautard, R., and Strauss, B.: Evaluation of the probabilistic prediction systems, in: Proceedings, ECMWF Workshop on Predictability, Shinfield Park, Reading, Berkshire, ECMWF, 1-25, 1999. Velázquez, J.A., Petit, T., Lavoie, A., Boucher M.-A., Turcotte R., Fortin V., and Anctil, F. : An evaluation of the Canadian global meteorological ensemble prediction system for short-term hydrological forecasting, Hydrol. Earth Syst. Sci., 13, 2221-2231, 2009. Wilks, D. S.: Statistical Methods in the Atmospheric Sciences, Academic Press, San Diego, CA, 465 pp., 1995.

  5. 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

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

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    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.

  7. 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

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    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

  8. Operational value of ensemble streamflow forecasts for hydropower production: A Canadian case study

    Science.gov (United States)

    Boucher, Marie-Amélie; Tremblay, Denis; Luc, Perreault; François, Anctil

    2010-05-01

    increased hydropower production. The ensemble precipitation forecasts extend from March 1st of 2002 to December 31st of 2003. They were obtained using two atmospheric models, SEF (8 members plus the control deterministic forecast) and GEM (8 members). The corresponding deterministic precipitation forecast issued by SEF model is also used within HYDROTEL in order to compare ensemble streamflow forecasts with their deterministic counterparts. Although this study does not incorporate all the sources of uncertainty, precipitation is certainly the most important input for hydrological modeling and conveys a great portion of the total uncertainty. References: Fortin, J.P., Moussa, R., Bocquillon, C. and Villeneuve, J.P. 1995: HYDROTEL, un modèle hydrologique distribué pouvant bénéficier des données fournies par la télédétection et les systèmes d'information géographique, Revue des Sciences de l'Eau, 8(1), 94-124. Jaun, S., Ahrens, B., Walser, A., Ewen, T. and Schaer, C. 2008: A probabilistic view on the August 2005 floods in the upper Rhine catchment, Natural Hazards and Earth System Sciences, 8 (2), 281-291. Krzysztofowicz, R. 2001: The case for probabilistic forecasting in hydrology, Journal of Hydrology, 249, 2-9. Murphy, A.H. 1994: Assessing the economic value of weather forecasts: An overview of methods, results and issues, Meteorological Applications, 1, 69-73. Mylne, K.R. 2002: Decision-Making from probability forecasts based on forecast value, Meteorological Applications, 9, 307-315. Laio, F. and Tamea, S. 2007: Verification tools for probabilistic forecasts of continuous hydrological variables, Hydrology and Earth System Sciences, 11, 1267-1277. Roulin, E. 2007: Skill and relative economic value of medium-range hydrological ensemble predictions, Hydrology and Earth System Sciences, 11, 725-737. Velazquez, J.-A., Petit, T., Lavoie, A., Boucher, M.-A., Turcotte, R., Fortin, V. and Anctil, F. 2009: An evaluation of the Canadian global meteorological ensemble

  9. Book Reviews

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    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

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

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    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

  11. 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

  12. 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

  13. 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

  14. 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

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    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