Sample records for physics contribution aux

  1. Contribution méthodologique aux pratiques de matériovigilance en transfusion sanguine

    Microsoft Academic Search

    P Roussel; A Pujol-Rey; C Arzur

    2001-01-01

    To reduce seriousness and frequency of iatriogenic risk implies prevention policies and efficient operational systems for vigilance. This risk management implies definition of precise organizations and procedures able to locate and to notify quickly undesirable events. This is the case about single use medical devices (SUMD) used in blood transfusion. This article is a contribution to the organisation of the

  2. CONTRIBUTION A L'TUDE DU DURCISSEMENT DU NIOBIUM ET DE CERTAINS DE SES ALLIAGES LIS AUX INTERSTITIELS,

    E-print Network

    Paris-Sud XI, Université de

    387 CONTRIBUTION A L'ÉTUDE DU DURCISSEMENT DU NIOBIUM ET DE CERTAINS DE SES ALLIAGES LIÉS AUX traction effectués sous vide entre 20 et 1 200 °C sur divers alliages de Niobium ont permis de distinguer. Abstract. 2014 Tensile tests were run on different Niobium alloys from 20 to 1 200 °C in high vacuum

  3. Hermann Weyl's Contribution to Physics

    NASA Astrophysics Data System (ADS)

    Yang, Chen Ning

    2013-05-01

    In May 1954, at the age of 69, Hermann Weyl gave a lecture1 in Lausanne, as President Ursprung already mentioned. This lecture was largely autobiographical, centering upon various stages of his thinking, especially about philosophy. It touched upon Weyl's first important work in physics: The next epochal event for me was that I made an important mathematical discovery. It concerned the regularity in the distribution of the eigenfrequencies of a continuous medium, like a membrane, an elastic body, or the electromagnetic ether. The idea was one of many, as they probably come to every young person preoccupied with science but while the others soon burst like soap bubbles, this one led, as a short inspection showed, to the goal. I was myself rather taken aback by it as I had not believed myself capable of anything like it...

  4. Physical mechanisms contributing to device ''REBOUND''

    Microsoft Academic Search

    J. R. Schwank; P. V. Dressendorfer; P. J. McWhorter; F. W. Sexton; D. C. Turpin; P. S. Winokur

    1984-01-01

    The physical mechanisms that produce rebound have been identified. The positive increase in threshold voltage during a bias anneal is due to annealing of oxide trapped charge. Rebound can be predicted by measuring the contribution to the threshold voltage from radiation-induced interface states immediately after irradiation.

  5. Contribution of Public Parks to Physical Activity

    PubMed Central

    Cohen, Deborah A.; McKenzie, Thomas L.; Sehgal, Amber; Williamson, Stephanie; Golinelli, Daniela; Lurie, Nicole

    2007-01-01

    Objectives. Parks provide places for people to experience nature, engage in physical activity, and relax. We studied how residents in low-income, minority communities use public, urban neighborhood parks and how parks contribute to physical activity. Methods. In 8 public parks, we used direct observation to document the number, gender, race/ethnicity, age group, and activity level of park users 4 times per day, 7 days per week. We also interviewed 713 park users and 605 area residents living within 2 miles of each park. Results. On average, over 2000 individuals were counted in each park, and about two thirds were sedentary when observed. More males than females used the parks, and males were twice as likely to be vigorously active. Interviewees identified the park as the most common place they exercised. Both park use and exercise levels of individuals were predicted by proximity of their residence to the park. Conclusions. Public parks are critical resources for physical activity in minority communities. Because residential proximity is strongly associated with physical activity and park use, the number and location of parks are currently insufficient to serve local populations well. PMID:17267728

  6. Marie Curie's contribution to Medical Physics.

    PubMed

    Jean-Claude, Rosenwald; Nüsslin, Fridtjof

    2013-09-01

    On occasion of its 50th anniversary, the International Organization for Medical Physics (IOMP) from now on is going to celebrate annually an International Day of Medical Physics for which the 7th November, the birthday of Marie Sklodowska Curie, a most exceptional character in science at all and a pioneer of medical physics, has been chosen. This article briefly outlines her outstanding personality, sketches her fundamental discovery of radioactivity and emphasizes the impact of her various achievements on the development of medical physics at large. PMID:23958429

  7. On Wolfgang Pauli's most important contributions to physics

    Microsoft Academic Search

    Norbert Straumann

    2000-01-01

    After some brief biographical notes, Wolfgang Pauli's main contributions to general relativity, quantum theory, quantum field theory, and elementary particle physics are reviewed. A detailed description is given how Pauli descovered - before the advent of the new quantum mechanics - his exclusion principle.

  8. On Wolfgang Pauli's most important contributions to physics

    E-print Network

    Norbert Straumann

    2000-10-02

    After some brief biographical notes, Wolfgang Pauli's main contributions to general relativity, quantum theory, quantum field theory, and elementary particle physics are reviewed. A detailed description is given how Pauli descovered - before the advent of the new quantum mechanics - his exclusion principle.

  9. On Wolfgang Pauli's most important contributions to physics1

    Microsoft Academic Search

    Norbert Straumann

    After some brief biographical notes, Wolfgang Pauli's main contributions to general re- lativity, quantum theory, quantum field theory, and elementary particle physics are reviewed. A detailed description is given how Pauli descovered - before the advent of the new quantum mechanics - his exclusion principle.

  10. Dick Dalitz:. Examples of His Contributions to Particle Physics

    NASA Astrophysics Data System (ADS)

    Goldstein, Gary R.

    2008-07-01

    Dick Dalitz produced lasting contributions to particle physics for 50 years. Along with Dalitz pairs, Dalitz plots and CDD poles, he did major work in parity violation, hyperon resonance identification, the quark model, and hypernuclei. These topics will be summarized, with some emphasis on the author's collaboration with Dalitz on quark spin and fragmentation correlations, and, particularly, the work on the identification of the top quark and its mass. Short biographical information is interspersed. This paper is based on a presentation at the International School of Subnuclear Physics, Erice 2006.

  11. Dick Dalitz: Examples of His Contributions to Particle Physics

    E-print Network

    Gary R. Goldstein

    2007-04-30

    Dick Dalitz produced lasting contributions to particle physics for 50 years. Along with Dalitz pairs, Dalitz plots and CDD poles, he did major work in parity violation, hyperon resonance identification, the quark model, and hypernuclei. These topics will be summarized, with some emphasis on the author's collaboration with Dalitz on quark spin and fragmentation correlations, and, particularly, the work on the identification of the top quark and its mass. Short biographical information is interspersed. This paper is based on a presentation at the International School of Subnuclear Physics, Erice 2006.

  12. New physics contribution to neutral trilinear gauge boson couplings

    NASA Astrophysics Data System (ADS)

    Dutta, Sukanta; Goyal, Ashok; Mamta

    2009-09-01

    We study the one-loop new physics effects to the CP even triple neutral gauge boson vertices ? ? ? Z, ? ? Z Z, Z ? Z ? and Z ? ZZ in the context of Little Higgs models. We compute the contribution of the additional fermions in Little Higgs models in the framework of direct product groups where [ SU(2)× U(1)]2 gauge symmetry is embedded in SU(5) global symmetry and also in the framework of the simple group where SU( N)× U(1) gauge symmetry breaks down to SU(2) L × U(1). We calculate the contribution of the fermions to these couplings when T parity is invoked. In addition, we re-examine the MSSM contribution at the chosen point of SPS1a' and compare with the SM and Little Higgs models.

  13. Venus Express Magnetometer Contribution to Space Plasma Physics

    NASA Astrophysics Data System (ADS)

    Zhang, Tielong

    Venus Express (VEX), the first European satellite to Venus, is primarily a planetary mission itself and the main scientific objective is a comprehensive investigation of Venus atmosphere and plasma environment. But the plasma payload is very limited with only a plasma instrument and a magnetometer. Since Venus Express reused the spacecraft bus of Mars Express, which did not carry a magnetometer, no magnetic cleanliness program was implemented to minimize the spacecraft field and no boom was provided. It is fair to say that no essential VEX contribution to fundamental plasma physics was expected after fleets of ISEE and Cluster spacecraft. However during relatively short time in orbit, we have been successfully recovered nearly 100% of the field data with a good accuracy of the quality comparable to magnetic field measurements made onboard magnetically clean spacecraft. And we have produced substantial contributions to many interesting problems of plasma physics. VEX was th! e first to register a new type of subcritical shock, never discussed and never observed before in space plasma. VEX was the first show that K-H vortices are the main contributor to the plasma escape from Venus. Review of these and other exciting VEX results will be given in this presentation.

  14. "Physical Education Makes You Fit and Healthy". Physical Education's Contribution to Young People's Physical Activity Levels

    ERIC Educational Resources Information Center

    Fairclough, S.; Stratton, G.

    2005-01-01

    The purpose of this study was to assess physical activity levels during high school physical education lessons. The data were considered in relation to recommended levels of physical activity to ascertain whether or not physical education can be effective in helping young people meet health-related goals. Sixty-two boys and 60 girls (aged 11-14…

  15. 'Physical education makes you fit and healthy'. Physical education's contribution to young people's physical activity levels

    Microsoft Academic Search

    S. Fairclough; G. Stratton

    2004-01-01

    The purpose of this study was to assess physical activity levels during high school physical education lessons. The data were considered in relation to recommended levels of physical activity to ascertain whether or not physical education can be effective in helping young people meet health-related goals. Sixty-two boys and 60 girls (aged 11-14 years) wore heart rate telemeters during physical

  16. The contributing role of physical education in youth’s daily physical activity and sedentary behavior

    PubMed Central

    2014-01-01

    Background School physical education (PE) is considered as an effective channel for youth to accumulate moderate-to-vigorous physical activity (MVPA) and reduce sedentary time. The purpose of this study was to determine the contributing role of PE in daily MVPA and sedentary time among youth. Methods The study recruited 67 sixth grade children (29 boys; Mean age?=?11.75) from two suburban schools at a U.S. Midwest state, 48 of whom contributed ?10 hours of physical activity (PA) data per day were included for analysis. An objective monitoring tool (i.e., Sensewear armband monitor) was used to capture the participants’ MVPA and sedentary time for 7–14 days. Pearson product–moment correlation analysis (r), multi-level regression analyses, and analysis of variance were conducted for data analysis. Results MVPA and sedentary time in PE showed significant positive associations with daily MVPA and sedentary time, respectively (r?=?0.35, p?contribution to increasing daily MVPA and decreasing daily sedentary time among youth. Active participation in PE classes increases the chance to be more active and less sedentary beyond PE among youth. PMID:24495714

  17. Quantum-Matter-Spacetime: Peter Mittelstaedt's Contributions to Physics and Its Foundations

    NASA Astrophysics Data System (ADS)

    Busch, Paul; Pfarr, Joachim; Ristig, Manfred L.; Stachow, Ernst-Walther

    2010-10-01

    In a period of over 50 years, Peter Mittelstaedt has made substantial and lasting contributions to several fields in theoretical physics as well as the foundations and philosophy of physics. Here we present an overview of his achievements in physics and its foundations which may serve as a guide to the bibliography (printed in this Festschrift) of his publications. An appraisal of Peter Mittelstaedt’s work in the philosophy of physics is given in a separate contribution by B. Falkenburg.

  18. Nuclear Physics A 611 ( 1996) 484-513 Mesonic and binding contributions to the EMC

    E-print Network

    Fernández de Córdoba, Pedro

    NUCLEAR PHYSICS A Nuclear Physics A 611 ( 1996) 484-513 Mesonic and binding contributions in the interplay of nuclear and particle physics which has attracted more attention. Pioneering work on Fermi.V. All rights reserved. PII SO375-9474(96)00289-S #12;E. Marco et al./Nuclear Physics A 611 (1996) 484

  19. Applied Physics Lab Kennedy Space Center: Recent Contributions

    NASA Technical Reports Server (NTRS)

    Starr, Stan; Youngquist, Robert

    2006-01-01

    The mission of the Applied Physics Lab is: (1) Develop and deliver novel sensors and devices to support KSC mission operations. (2) Analyze operational issues and recommend or deliver practical solutions. (3) Apply physics to the resolution of long term space flight issues that affect space port operation on Earth or on other planets.

  20. Psycho-Physiological Contributions of Physical Activity and Sports for Girls.

    ERIC Educational Resources Information Center

    Bunker, Linda K

    1998-01-01

    Sport and physical activity contribute to the physical movement capabilities of girls, the health status of their bodies, the values and ethical behaviors they develop, and their personal development of a unique identity. This paper offers an overview of contributions and potential challenges related to physiological dimensions and psychosocial…

  1. Contributions of SCADM to solar-terrestrial physics

    NASA Technical Reports Server (NTRS)

    Fisk, L. A.

    1980-01-01

    The many different aspects of solar terrestrial physics are summarized. The possible influence of variations in the solar outputs on the terrestrial climate, and the role for SCADM in such studies is emphasized. The use of SCADM to provide detailed information on variations in the solar outputs over a sizeable fraction of the solar cycle, and on the physics of the convection layer of the Sun is discussed.

  2. Herbert M. Parker: Publications and other contributions to radiological and health physics

    Microsoft Academic Search

    R. L. Kathren; R. W. Baalman; W. J. Bair

    1986-01-01

    For more than a half century, Herbert M. Parker was a leading force in radiological physics. This book brings together all of Parker's published and unpublished papers and is divided into six parts. The second edition is on his work in medical physics. The third part is on his contribution to the evolution of radiological units. The fourth and largest

  3. Herbert M. Parker: Publications and contributions to radiological and health physics

    Microsoft Academic Search

    R. L. Kathren; R. W. Baalman; W. J. Bair

    1986-01-01

    For more than a half century, Herbert M. Parker was a leading force in radiological physics. As a scientist, he was codeveloper of a systematic dosimetry scheme for implant therapy and the innovative proposer of radiological units with unambiguous physical and biological bases. He made seminal contributions to the development of scientifically based radiation protection standards and, as an administrator

  4. The Contribution of Secondary School Physical Education to Lifetime Physical Activity

    Microsoft Academic Search

    Stuart Fairclough; Gareth Stratton; Graham Baldwin

    2002-01-01

    The promotion of lifetime participation in physical activity is a major goal of physical education, which this study considered in the context of curricular and extracurricular opportunities. Questionnaires focusing on PE provision were completed by 51 heads of physical education (HoPE). Results showed that team games predominated over lifetime activities in Key Stages 3 and 4 (p < .01), while

  5. Physical Activity Energy Expenditure in Dutch Adolescents: Contribution of Active Transport to School, Physical Education, and Leisure Time Activities

    ERIC Educational Resources Information Center

    Slingerland, Menno; Borghouts, Lars B.; Hesselink, Matthijs K. C.

    2012-01-01

    Background: Detailed knowledge about physical activity energy expenditure (PAEE) can guide the development of school interventions aimed at reducing overweight in adolescents. However, relevant components of PAEE have never been objectively quantified in this population. This study investigated the contribution of active transport to and from…

  6. Economic difficulties and physical functioning in Finnish and British employees: contribution of social and behavioural factors

    PubMed Central

    Lallukka, Tea; Lahelma, Eero; Ferrie, Jane E.; Rahkonen, Ossi; Head, Jenny; Marmot, Michael G.; Martikainen, Pekka

    2011-01-01

    Background: Childhood and current economic difficulties are associated with physical health. However, evidence concerning the factors underlying these associations is sparse. This study examines the contribution of a range of social and behavioural factors to associations between economic difficulties and physical functioning. Methods: We used comparable data on middle-aged white-collar employees from the Finnish Helsinki Health Study cohort (n?=?3843) and the British Whitehall II Study cohort (n?=?3052). Our health outcome was physical functioning measured by the SF-36 Physical Component Summary. Relative indices of inequality (RII), calculated using logistic regression analysis, were used to examine associations between economic difficulties and physical functioning, and the contribution of further socio-economic circumstances, health behaviours, living arrangements and work–family conflicts to these associations. Results: In age-adjusted models, childhood (RII?=?1.76?3.06) and current (RII?=?1.79?3.03) economic difficulties were associated with poor physical functioning in both cohorts. Further adjusting for work–family conflicts attenuated the associations of current economic difficulties with physical functioning in both cohorts, and also those of childhood economic difficulties in the Helsinki cohort. Adjustments for other socio-economic circumstances also caused some attenuation, while health behaviours and living arrangements had small or negligible effects. Conclusions: Conflicts between work and family contribute to the associations of economic difficulties with physical functioning among employees from Finland and Britain. This suggests that supporting people to cope with economic difficulties, and efforts to improve the balance between paid work and family may help employees maintain good physical functioning. PMID:20616102

  7. Limb bud and flank mesoderm have distinct "physical phenotypes" that may contribute to limb budding

    E-print Network

    Newman, Stuart A.

    Limb bud and flank mesoderm have distinct "physical phenotypes" that may contribute to limb budding 2008 Available online 20 June 2008 Keywords: Limb bud Surface tension Active response -smooth muscle actin Limb bud outgrowth in chicken embryos is initiated during the third day of development

  8. The contribution of preschool playground factors in explaining children's physical activity during recess

    PubMed Central

    Cardon, Greet; Van Cauwenberghe, Eveline; Labarque, Valery; Haerens, Leen; De Bourdeaudhuij, Ilse

    2008-01-01

    Background Low levels of physical activity are characteristic in preschoolers. To effectively promote physical activity, it is necessary to understand factors that influence young children's physical activity. The present study aimed to investigate how physical activity levels are influenced by environmental factors during recess in preschool. Methods Preschool playground observations and pedometry during recess were carried out in 39 randomly selected preschools (415 boys and 368 girls; 5.3 ± 0.4 years old). In order to examine the contribution of playground variables to physical activity levels, taking adjustment for clustering of subjects within preschools into account, multilevel analyses were conducted. Results During recess boys took significantly more steps per minute than girls (65 ± 36 versus 54 ± 28 steps/min). In both genders higher step counts per minute were significantly associated with less children per m2 and with shorter recess times. Only in boys a hard playground surface was a borderline significant predictor for higher physical activity levels. In girls higher step counts were associated with the presence of less supervising teachers. Playground markings, access to toys, the number of playing or aiming equipment pieces and the presence of vegetation or height differences were not significant physical activity predictors in both genders. Conclusion In preschool children physical activity during outdoor play is associated with modifiable playground factors. Further study is recommended to evaluate if the provision of more play space, the promotion of continued activity by supervisors and the modification of playground characteristics can increase physical activity levels in preschoolers. PMID:18302741

  9. Final Report, CONTRIBUTIONS TO STUDIES OF CP VIOLATION AND HADRONIC PHYSICS WITH THE BABAR COLLABORATION

    SciTech Connect

    Brown, David Norvil [University of Louisville] [University of Louisville

    2013-07-25

    The University of Louisville High Energy Physics group has undertaken a long-term effort in understanding baryon production in elementary particle processes in the 10 GeV energy region. We have contributed significantly to the broad program of the BaBar Collaboration, particularly in support of computing, data visualization, and simulation. We report here on progress in the areas of service to the Collaboration and understanding of baryon production via measurement of inclusive hadronic particle spectra.

  10. INTRODUCTION AUX HOMME-MACHINE

    E-print Network

    Essert-Villard, Caroline

    en fonction de la perception visuelle puis tactile #12;10 Action physique · la main est la plus;13 Cognition : mémoire et apprentissage · mémoire sensorielle associée aux sens très court laps de temps (env dizaines de secondes · mémoire à long terme capacité infinie temps de stockage infini #12;14 Cognition

  11. Assessing the Contribution of Parks to Physical Activity using GPS and Accelerometry

    PubMed Central

    Evenson, Kelly R.; Wen, Fang; Hillier, Amy; Cohen, Deborah A.

    2013-01-01

    Purpose Parks offer a free option for physical activity in many communities. How much time people spend using parks and the contribution that parks makes to their physical activity is not known. This study describes patterns of park use and physical activity among a diverse adult sample. Methods From five US states, 238 adults enrolled in or near 31 study parks. Participants wore a global positioning system (GPS) monitor (Qstarz BT-Q1000X) and an ActiGraph accelerometer (GT1M) concurrently for three weeks. Parks were mapped from local and national park shape files. Park visits and travel to and from the parks were derived from the objective data. Results Participants visited parks a median of 2.3 times/week and park visits lasted a median of 42.0 minutes. Overall, participants engaged in a median of 21.7 minutes/day of moderate activity and 0.1 minutes/day of vigorous activity, with an average of 8.2% of all moderate and 9.4% of all vigorous activity occurring within the parks. Among those with at least one park visit (n=218), counts per minute, moderate, moderate to vigorous physical activity (MVPA), number and time in MVPA bouts/day, and sedentary behavior were all higher on days when a park was visited compared to days when a park was not visited. Considering several definitions of active travel, walking or bicycling to and from the park added an additional 3.7 to 6.6 mean minutes of MVPA per park visit. Conclusion Parks contributed as a place and destination for physical activity, but were underutilized. One of the next steps in this line of inquiry is to understand characteristics of parks used more often as a place and destination for physical activity. PMID:23531716

  12. Spectroscopy of antiprotonic helium atoms and its contribution to the fundamental physical constants

    PubMed Central

    Hayano, Ryugo S.

    2010-01-01

    Antiprotonic helium atom, a metastable neutral system consisting of an antiproton, an electron and a helium nucleus, was serendipitously discovered, and has been studied at CERN’s antiproton decelerator facility. Its transition frequencies have recently been measured to nine digits of precision by laser spectroscopy. By comparing these experimental results with three-body QED calculations, the antiproton-to-electron massratio was determined as 1836.152674(5). This result contributed to the CODATA recommended values of the fundamental physical constants. PMID:20075605

  13. III -INTRODUCTION AUX TESTS STATISTIQUES

    E-print Network

    Croisille, Jean-Pierre

    III - INTRODUCTION AUX TESTS STATISTIQUES J-P. Croisille Universit´e de Lorraine UEL - Ann´ee 2012/2013 Jean-Pierre CROISILLE - Laboratoire LMAM UEL: L'influence des math´ematiques sur la soci´et´e #12 LMAM UEL: L'influence des math´ematiques sur la soci´et´e #12;CHOIX DE L'HYPOTHESE NEUTRE ET DE L

  14. There is a rich history of the physical sciences contribut-ing to cancer research and treatment. Max Delbrck, a

    E-print Network

    with the biologist Salvador Luria, he showed that phage resistance in a population of bacteria is caused by random is a cornerstone of cancer therapy, originated from basic physical chem- istry research. Physics and mathematics personalized cancer therapies, in which patients are treated with drug regimens that are specifically tailored

  15. CIEAEM 57 Italie Italy Foire aux ides, Session de Poster Piazza Armerina, Forum of Ideas, Poster Session

    E-print Network

    Spagnolo, Filippo

    CIEAEM 57 ­ Italie ­ Italy Foire aux idées, Session de Poster Piazza Armerina, Forum of Ideas, Poster Session July 23-29, 2005. The contribution will be organised as a poster and will present illustrations of the way student teachers meet

  16. Aide aux doctorants pour la participation des Aide aux doctorants pour la participation des colloques

    E-print Network

    Di Girolami, Cristina

    Aide aux doctorants pour la participation à des colloques Aide aux doctorants pour la participation à des colloques retour Formation doctorale Aide aux doctorants pour la participation à des colloques aide vient compléter les financements déjà prévus par les laboratoires et les Écoles doctorales pour

  17. Physical activity during soccer and its contribution to physical activity recommendations in normal weight and overweight children.

    PubMed

    Sacheck, Jennifer M; Nelson, Tara; Ficker, Laura; Kafka, Tamar; Kuder, Julia; Economos, Christina D

    2011-05-01

    Amid the childhood obesity epidemic, understanding how organized sports participation contributes to meeting physical activity recommendations in children is important. Anthropometrics were measured in children (n = 111; 68% female, 9.1 ± 0.8 yr) before one 50-min soccer match. Time spent at different physical activity intensity levels was examined using Actigraph accelerometers. 49% of the match time was spent in sedentary activity (25.4 ± 5.7 min), while 33% of the match (16.9 ± 4.7 min) was spent in moderate-to-vigorous activity (MVPA; p < .001). 22.5% of the children were overweight/obese and spent more time in sedentary activity (+3.2 ± 1.2 min; p < .05) and less time in MVPA (-3.0 ± 1.0 min; p < .01) compared with the normal weight children. These data demonstrate that playing an organized sport such as soccer only meets a portion (~25%) of the 60 min of MVPA recommended and even less of this recommendation is met by overweight/obese children. PMID:21633140

  18. New-physics contributions to the forward-backward asymmetry in B ? K * ? + ? -

    NASA Astrophysics Data System (ADS)

    Alok, Ashutosh Kumar; Dighe, Amol; Ghosh, Diptimoy; London, David; Matias, Joaquim; Nagashima, Makiko; Szynkman, Alejandro

    2010-02-01

    We study the forward-backward asymmetry (AFB) and the differential branching ratio (DBR) in B ? K * ? + ? - in the presence of new physics (NP) with different Lorentz structures. We consider NP contributions from vector-axial vector (VA), scalarpseudoscalar (SP), and tensor (T) operators, as well as their combinations. We calculate the effects of these new Lorentz structures in the low- q 2 and high- q 2 regions, and explain their features through analytic approximations. We find two mechanisms that can give a significant deviation from the standard-model predictions, in the direction indicated by the recent measurement of AFB by the Belle experiment. They involve the addition of the following NP operators: (i) VA, or (ii) a combination of SP and T (slightly better than T alone). These two mechanisms can be distinguished through measurements of DBR in B ? K * ? + ? - and AFB in B ? K? + ? -.

  19. LES PROBLMATIQUES DE TRANSITION AUX NORMES

    E-print Network

    Paris-Sud XI, Université de

    LES PROBLÉMATIQUES DE TRANSITION AUX NORMES IFRS DES SOCIÉTÉS FONCIÈRES Eric TORT Expert-comptable certifié IFRS par les institutions (CSOEC, CNCC) Docteur en sciences de gestion, GREGOR de l'IAE de Paris 8 opérationnel, les problématiques du passage aux normes IFRS des sociétés foncières (évaluation des actifs

  20. ACCS AUX ESPACES COMMUNS ET GRANDES STRATGIES

    E-print Network

    Paris-Sud XI, Université de

    #12;ACCÈS AUX ESPACES COMMUNS ET GRANDES STRATÉGIES : VERS UN NOUVEAU JEU MONDIAL par Frédéric Ramel SCIENCES PO, CERI #12;ACCÈS AUX ESPACES COMMUNS ET GRANDES STRATÉGIES: VERS UN NOUVEAU JEU MONDIAL ARABES UNIS 9- ÉTUDIER LE RENSEIGNEMENT : ÉTAT DE L'ART ET PERSPECTIVES DE RECHERCHE 10- ENQUÊTE SUR LES

  1. The contribution of preschool playground factors in explaining children's physical activity during recess

    Microsoft Academic Search

    Greet Cardon; Eveline Van Cauwenberghe; Valery Labarque; Leen Haerens; Ilse De Bourdeaudhuij

    2008-01-01

    BACKGROUND: Low levels of physical activity are characteristic in preschoolers. To effectively promote physical activity, it is necessary to understand factors that influence young children's physical activity. The present study aimed to investigate how physical activity levels are influenced by environmental factors during recess in preschool. METHODS: Preschool playground observations and pedometry during recess were carried out in 39 randomly

  2. Introduction aux Systmes Temps Rel Nicolas NAVET

    E-print Network

    Navet, Nicolas

    Introduction aux Systèmes Temps Réel Nicolas NAVET 2010/2011 http://www.loria.fr/~nnavet Introduction aux systèmes temps réel #12;Plan du cours 1. Systèmes temps réel : exemples et fondamentaux 2. Conception des applications temps réel : quelles techniques pour vérier le respect des contraintes ? 3

  3. Working Group I Contribution to the IPCC Fourth Assessment Report Climate Change 2007: The Physical Science Basis

    E-print Network

    Fischlin, Andreas

    Working Group I Contribution to the IPCC Fourth Assessment Report Climate Change 2007: The Physical Assessment Report. All names and roles given below are subject to confirmation by the individuals concerned Greenhouse gases, Aircraft Effects, GWPs Richard A. BETTS United Kingdom Land-use Forcing David W. FAHEY USA

  4. Contribution of Individual and Environmental Factors to Physical Activity Level among Spanish Adults

    PubMed Central

    Serrano-Sanchez, José Antonio; Lera-Navarro, Angela; Dorado-García, Cecilia; González-Henriquez, Juan José; Sanchis-Moysi, Joaquin

    2012-01-01

    Background Lack of physical activity (PA) is a major risk for chronic disease and obesity. The main aims of the present study were to identify individual and environmental factors independently associated with PA and examine the relative contribution of these factors to PA level in Spanish adults. Methodology/Principal Findings A population-based cross-sectional sample of 3,000 adults (18–75 years old) from Gran Canaria (Spain) was selected using a multistage stratified random sampling method. The participants were interviewed at home using a validated questionnaire to assess PA as well as individual and environmental factors. The data were analyzed using bivariate and multivariate logistic regression. One demographic variable (education), two cognitive (self-efficacy and perceived barriers), and one social environmental (organized format) were independently associated with PA in both genders. Odds ratios ranged between 1.76–2.07 in men and 1.35–2.50 in women (both p<0.05). Individual and environmental factors explained about one-third of the variance in PA level. Conclusions/Significance Self-efficacy and perceived barriers were the most significant factors to meet an adequate level of PA. The risk of insufficient PA was twofold greater in men with primary or lesser studies and who are employed. In women, living in rural environments increased the risk of insufficient PA. The promotion of organized PA may be an efficient way to increase the level of PA in the general population. Improvement in the access to sport facilities and places for PA is a prerequisite that may be insufficient and should be combined with strategies to improve self-efficacy and overcome perceived barriers in adulthood. PMID:22685598

  5. Apport de l'ingnierie ontologique aux environnements de formation distance

    E-print Network

    Paris-Sud XI, Université de

    for ontological engineering. MOTS-CLES. ontologie, ingénierie ontologique, formation à distance, KEYWORDS.ontology, ontological engineering, distance education #12;STICEF/Hors série 2003, Technologies et formation à distance 11 Apport de l'ingénierie ontologique aux environnements de formation à distance Contribution

  6. Former aux comptences TIC et aux comptences informationnelles : des objectifs intimement lis en formation

    E-print Network

    Paris-Sud XI, Université de

    Former aux compétences TIC et aux compétences informationnelles : des objectifs intimement liés en.dumouchel@umontreal.ca Université de Montréal Résumé: Pour mieux comprendre la forte relation qui existe entre les compétences TIC enchaînons avec une vue d'ensemble des études empiriques sur le niveau des compétences TIC et

  7. Contribution of Physical Development and Muscular Strength to the Motor Performance Capacity of 7 to 12 Year Old Boys

    PubMed Central

    Teeple, Janet B.; Lohman, T. G.; Misner, J. E.; Boileau, R. A.; Massey, B. H.

    1975-01-01

    The contribution of selected physical development and muscular strength measures to general motor performance capacity was investigated in 55 seven to twelve year old boys. The physical development variables were height, body weight and fat-free body. Right and left hand strength, and static leg extension force of the right, left and both legs. simultaneously were used as measures of strength. The measures of general motor capacity were six field performance tests of the kind typically used by investigators and teachers including the softball throw, vertical jump, standing broad jump, shuttle run, 50 yard dash, and mile run. Data were analyzed by the method of least squares and constants fitted for height, body weight, fat-free weight and various measures of strength with chronological age held constant. Strength accounted for 18 to 43 percent of the variation in the children's motor performance score. Two measures of physical development, body weight and fat-free body weight together with age, were the dominant factors, contributing from 46 to 65 percent of the variation. Muscular strength and physical development measures together accounted for 57 to 70 percent of the variability in motor performance. For diagnostic and research purposes, measurement of physical development is an important consideration for proper interpretation of field tests of motor performance. ImagesFigure 1

  8. Physical quality of pelleted animal feed 3. Contribution of feedstuff components

    Microsoft Academic Search

    M. Thomas; T. van Vliet

    1998-01-01

    An overview is given of effects of the diet ingredients and their composition (e.g., starch, protein, sugar, fat and fibre content) on production characteristics of pellets and on their physical quality (pellet hardness and pellet durability) as compound animal feeds. Large differences exist in the effect on pellet physical quality within and between groups of diet ingredients when incorporated in

  9. Patterns of physical exercise and contributing factors among Hong Kong older adults

    Microsoft Academic Search

    Sau Po; I Chi; DJ MacFarlane; YH Cheng

    Key Messages 1. Studies suggest that regular physical activity and exercise offer a significant opportunity to enhance years of active independent life for older individuals. However, the majority of local respondents have a relatively sedentary lifestyle and were not getting adequate physical activity and exercise, though many recognised the health benefits of being active. 2. Compared with their relatively active

  10. "Friluftsliv": A Contribution to Equity and Democracy in Swedish Physical Education? An Analysis of Codes in Swedish Physical Education Curricula

    ERIC Educational Resources Information Center

    Backman, Erik

    2011-01-01

    During the last decade, expanding research investigating the school subject Physical Education (PE) indicates a promotion of inequalities regarding which children benefit from PE teaching. Outdoor education and its Scandinavian equivalent "friluftsliv," is a part of the PE curriculum in many countries, and these practices have been claimed to have…

  11. Experimental Semiconductor Physics: The Will to Contribute to the Country’s Economic Development

    NASA Astrophysics Data System (ADS)

    Vigil Santos, Elena

    During the second half of the 1960s the Physics School staff increased sharply. Before this, it had experienced near depletion due to the emigration of many of its members shortly after the triumph of the Revolution. This renaissance took place thanks to the incorporation of the first physicists to graduate from the Physics School itself, and to the return of those who had graduated abroad, mainly from the former Soviet Union. This group of young physicists—with a heavy schedule of teaching duties in spite of their lack of experience—gave strong support to the development of physics in Cuba.

  12. Aux\\/IAA Proteins Contain a Potent Transcriptional Repression Domain

    Microsoft Academic Search

    Shiv B. Tiwari; Gretchen Hagen; Tom J. Guilfoyle

    2004-01-01

    Aux\\/IAA proteins are short-lived nuclear proteins that repress expression of primary\\/early auxin response genes in protoplast transfection assays. Repression is thought to result from Aux\\/IAA proteins dimerizing with auxin response factor (ARF) transcriptional activators that reside on auxin-responsive promoter elements, referred to as AuxREs. Most Aux\\/IAA proteins contain four conserved domains, designated domains I, II, III, and IV. Domain II

  13. A combinatorial TIR1/AFB-Aux/IAA co-receptor system for differential sensing of auxin.

    PubMed

    Calderón Villalobos, Luz Irina A; Lee, Sarah; De Oliveira, Cesar; Ivetac, Anthony; Brandt, Wolfgang; Armitage, Lynne; Sheard, Laura B; Tan, Xu; Parry, Geraint; Mao, Haibin; Zheng, Ning; Napier, Richard; Kepinski, Stefan; Estelle, Mark

    2012-05-01

    The plant hormone auxin regulates virtually every aspect of plant growth and development. Auxin acts by binding the F-box protein transport inhibitor response 1 (TIR1) and promotes the degradation of the AUXIN/INDOLE-3-ACETIC ACID (Aux/IAA) transcriptional repressors. Here we show that efficient auxin binding requires assembly of an auxin co-receptor complex consisting of TIR1 and an Aux/IAA protein. Heterologous experiments in yeast and quantitative IAA binding assays using purified proteins showed that different combinations of TIR1 and Aux/IAA proteins form co-receptor complexes with a wide range of auxin-binding affinities. Auxin affinity seems to be largely determined by the Aux/IAA. As there are 6 TIR1/AUXIN SIGNALING F-BOX proteins (AFBs) and 29 Aux/IAA proteins in Arabidopsis thaliana, combinatorial interactions may result in many co-receptors with distinct auxin-sensing properties. We also demonstrate that the AFB5-Aux/IAA co-receptor selectively binds the auxinic herbicide picloram. This co-receptor system broadens the effective concentration range of the hormone and may contribute to the complexity of auxin response. PMID:22466420

  14. Jacquelin Charbonnel -ANF Mathrice -Angers 2012 Introduction aux expressions rgulires 1/21 Introduction aux expressions rgulires

    E-print Network

    Menichi, Luc

    Jacquelin Charbonnel - ANF Mathrice - Angers 2012 Introduction aux expressions régulières 1 Mathrice - Angers, mai 2012 #12;Jacquelin Charbonnel - ANF Mathrice - Angers 2012 Introduction aux expressions régulières 2/21 RE POSIX #12;Jacquelin Charbonnel - ANF Mathrice - Angers 2012 Introduction aux

  15. New physics contribution to B{yields}K{pi} decays in soft collinear effective theory

    SciTech Connect

    Huitu, K. [Department of Physics, and Helsinki Institute of Physics, P.O.Box 64, FIN-00014, University of Helsinki (Finland); Khalil, S. [Centre for Theoretical Physics, British University in Egypt, El Sherouk City, 11837 (Egypt) and Department of Mathematics, Ain Shams University, Faculty of Science, Cairo, 11566 (Egypt)

    2010-05-01

    We analyze the 5{sigma} difference between the CP asymmetries of the B{sup 0{yields}}K{sup +{pi}-} and B{sup +{yields}}K{sup +{pi}0} decays within the soft collinear effective theory. We find that in the standard model, such a big difference cannot be achieved. We classify then the requirements for the possible New Physics models, which can be responsible for the experimental results. As an example of a New Physics model we study minimal supersymmetric models, and find that the measured asymmetry can be obtained with nonminimal flavor violation.

  16. PENTOM 2005 Maintenance prdictive applique aux

    E-print Network

    Boyer, Edmond

    the signature of a health of a board. MOTS CLES : Maintenance proactive, diagnostic, surveillance, avionique KEYWORDS: Proactive maintenance, diagnostic, monitoring, avionics hal-00185497,version1-6Nov2007 ManuscritPENTOM 2005 Maintenance prédictive appliquée aux systèmes électroniques embarqués Samir Ghelam

  17. Prix Louis Dallves Appel aux candidatures

    E-print Network

    Rochaix, Jean-David

    Prix Louis Dallèves Appel aux candidatures Le Prix Louis Dallèves 2014 est mis au concours. Il est) Montant du prix : au maximum Frs 4000 (le montant est fixé par la Commission du Prix Louis Dallèves dividende le montant qui a permis d'instituer le Prix Louis Dallèves. Informée de ce geste émouvant, la

  18. Contribution of Neighborhood Income and Access to Quality Physical Activity Resources to Physical Activity in Ethnic Minority Women Over Time

    PubMed Central

    Lee, Rebecca E.; Mama, Scherezade K.; Adamus-Leach, Heather J.; Soltero, Erica G.

    2015-01-01

    Purpose To create and test an index to indicate both availability and quality of physical activity (PA) resources (PARs), to examine associations between access to quality PARs and changes in PA, and to determine whether this association differed in lower- and higher-income neighborhoods. Design Longitudinal, 6-month intervention. Setting. Houston and Austin, Texas. Subjects African-American and Hispanic or Latina women. Measures Women (N = 410) completed a questionnaire and accelerometry to measure PA. Neighborhoods (N = 163) were classified as lower- or higher-income by median household income at the census-tract level. PARs were audited using the PARA (physical activity resource assessment). Access to quality PARs was determined by a composite index (QPAR) of features, amenities, and incivilities. Analysis Repeated measures analyses of variance were used to examine changes in PA by (1) neighborhood income (lower/higher) and QPAR (lower/higher) groups, and (2) neighborhood income (lower/higher) and number of PARs (lower/higher) groups, adjusting for ethnicity, household income, and body mass index. Results Women in neighborhoods with lower QPAR scores had small increases in self-reported vigorous PA (M ? = 327.8 metabolic equivalent of task [MET]-min/wk) and decreases in accelerometer PA (M = ?3.4 min/d), compared to those with higher QPAR scores who had larger increases in self-reported vigorous PA (M ? = 709.8 MET-min/wk) and increased accelerometer PA (M = 3.9 min/d). There was a significant interaction between changes in leisure-time PA, QPAR score, and number of PARs (p =.049). Women with both more PARs and higher QPAR scores reported greater increases in leisure-time PA than women with fewer PARs and lower QPAR scores. Conclusion Access to higher-quality PARs can help increase or maintain PA over time regardless of neighborhood income. PAR quality is a separate and distinct, important determinant of PA in ethnic minority women. PMID:24524382

  19. The etiology of obesity: relative contribution of metabolic factors, diet, and physical activity

    Microsoft Academic Search

    Roland L. Weinsier; Gary R. Hunter; Adrian F. Heini; Michael I. Goran; Susan M. Sell

    1998-01-01

    Three major factors modulate body weight: metabolic factors, diet, and physical activity, each influenced by genetic traits. Despite recent advances in these areas, the prevalence of obesity in Westernized societies has increased. In contrast to monogenic animal models and rare human genetic syndromes, predisposition to common forms of obesity is probably influenced by numerous susceptibility genes, accounting for variations in

  20. Contribution of Physical Education and Sport to Health-Related Fitness in High School Students

    ERIC Educational Resources Information Center

    Beets, Michael W.; Pitetti, Kenneth H.

    2005-01-01

    This study compared health-related fitness variables of high school students (14 to 19-years-old; 120 males, 67 females) participating in physical education (PE) and school-sponsored sports (SSS) to students participating solely in PE. Cardiovascular fitness, the primary variable of interest, was measured using the 20-Meter Shuttle Ran (number of…

  1. Teaching the Nature of Science in Physics Courses: The Contribution of Classroom Historical Inquiries

    ERIC Educational Resources Information Center

    Maurines, Laurence; Beaufils, Daniel

    2013-01-01

    Physics and chemistry programs at the secondary school level in France recommend introducing components of the history of science (HS). Emphasis is placed on a "cultural" dimension, which is poorly defined but essentially refers to elements of epistemological nature. Moreover, the few examples of activities based on HS suggested by the programs…

  2. How Do Maternal Reasoning and Physical Punishment Contribute to Development of Verbal Competence and Behavior Problems?

    ERIC Educational Resources Information Center

    Jester, Jennifer M.; Muzik, Maria; Berube, Renee; Narang, Sonia; Tuttle, Brenda; Jacobson, Joseph

    As part of a longitudinal investigation of the effect of prenatal alcohol exposure on children's cognitive and socioemotional development, this study examined the role of physical punishment on the development of children's externalizing behavior. Participating in this phase were 296 inner-city African-American families with 7-year-olds who had…

  3. Sense of coherence contributes to physical and mental health in general hospital patients in China.

    PubMed

    Li, Wentian; Leonhart, Rainer; Schaefert, Rainer; Zhao, Xudong; Zhang, Lan; Wei, Jing; Yang, Jianzhong; Wirsching, Michael; Larisch, Astrid; Fritzsche, Kurt

    2015-07-01

    The sense of coherence (SOC) may explain why some people become ill under stress whereas others remain healthy. SOC is strongly related to perceived health, particularly mental health. Little is known about the physical and mental health statuses associated with SOC among general hospital outpatients in China. This multicentre cross-sectional study analysed 491 outpatients from four large Chinese general hospitals located in Beijing, Shanghai, Chengdu and Kunming. Patients completed questionnaires examining their SOC (SOC-9), somatic symptom severity (PHQ-15), depression (PHQ-9), generalised anxiety disorder (GAD), health anxiety (WI-7), quality of life (QoL; SF-12) and socio-demographic and clinical characteristics. SOC was negatively correlated with daily-life impairment, symptom duration, somatic symptom severity, depression, GAD and health anxiety, but was positively correlated with age as well as physical and mental QoL. Using a multiple linear regression model, the three strongest correlates of SOC were mental QoL, depression and age. These three variables explained 52% of the variance. SOC may be an important contributor to both mental and physical health in Chinese general hospital outpatients, which is consistent with the results obtained for primary care patients in Western countries. Longitudinal studies are needed to investigate how SOC predicts physical and mental health statuses over time and how these statuses respond to treatment for low SOC. PMID:25200137

  4. Student Physical Education Teachers' Well-Being: Contribution of Basic Psychological Needs

    ERIC Educational Resources Information Center

    Ciyin, Gülten; Erturan-Ilker, Gökçe

    2014-01-01

    This study adopted Self-Determination Theory tenets and aimed to explore whether student physical education (PE) teachers' satisfaction of the three basic psychological needs independently predicts well-being. 267 Turkish student PE teachers were recruited for the study. Two stepwise multiple regression analysis was performed in which each outcome…

  5. Hadronic Contributions to the Photon Vacuum Polarization and their Role in Precision Physics

    E-print Network

    F. Jegerlehner

    2002-12-09

    I review recent evaluations of the hadronic contribution to the shift in the fine structure constant and to the anomalous magnetic moment of the muon. Substantial progress in a precise determination of these important observables is a consequence of substantially improved total cross section measurement by the CMD-2 and BES II collaborations and an improved theoretical understanding. Prospects for further possible progress is discussed.

  6. Solvent contribution to the stability of a physical gel characterized by quasi-elastic neutron scattering.

    PubMed

    Spagnoli, Sylvie; Morfin, Isabelle; Gonzalez, Miguel A; Çarçabal, Pierre; Plazanet, Marie

    2015-03-01

    The dynamics of a physical gel, namely, low-molecular-mass organic gelator methyl-4,6-O-benzylidene-?-D-mannopyranoside (?-manno) in water and toluene, are probed by neutron scattering. Using high gelator concentrations, we were able to determine, on a time scale from a few picoseconds to 1 nanosecond, the number of solvent molecules that are immobilized by the rigid network formed by the gelators. We found that only a few toluene molecules per gelator participate in the network which is formed by hydrogen bonding between the gelators' sugar moieties. In water, however, the interactions leading to the gel formations are weaker, involving dipolar, hydrophobic, or ?-? interactions, and hydrogen bonds are formed between the gelators and the surrounding water. Therefore, around 10 to 14 water molecules per gelator are immobilized by the presence of the network. This study shows that neutron scattering can give valuable information about the behavior of solvent confined in a molecular gel. PMID:25652143

  7. Moving to Inclusion. Active Living through Physical Education: Maximizing Opportunities for Students with a Disability = Integration en Mouvement. La vie active par l'education physique: Multipliez les possibilities offertes aux eleves ayant un handicap.

    ERIC Educational Resources Information Center

    Active Living Alliance for Canadians with a Disability, Gloucester (Ontario).

    This document is composed of 10 manuals which provide both general and specific guidelines to facilitate the inclusion of Canadian students with disabilities in physical education programs. An introductory manual identifies general concepts, strategies, and practical approaches that can be used in an inclusive physical education program. It…

  8. Collaborateurs aux lignes directrices en soins primaires

    PubMed Central

    Allan, G. Michael; Kraut, Roni; Crawshay, Aven; Korownyk, Christina; Vandermeer, Ben; Kolber, Michael R.

    2015-01-01

    Résumé Objectif Déterminer la profession des collaborateurs scientifiques aux lignes directrices, les variables associées aux différences de participation des collaborateurs et si oui ou non les lignes directrices en soins primaires fournissent un énoncé sur les conflits d’intérêts. Type d’étude Analyse rétrospective des lignes directrices en soins primaires affichées sur le site web de l’Association médicale canadienne. Deux extracteurs de données indépendants ont examiné les lignes directrices et ont extrait les données pertinentes. Contexte Canada Principaux paramètres à l’étude Commanditaires des lignes directrices, territoire (national ou provincial) visé par les lignes directrices, profession des collaborateurs scientifiques aux lignes directrices et énoncés de conflits d’intérêts rapportés dans les lignes directrices. Résultats Sur les 296 lignes directrices de pratique clinique trouvées dans la section de la médecine familiale de l’Infobanque AMC, 65 apparaissaient en double et 35 se rapportaient de façon limitée à la médecine familiale. Vingt ne fournissaient aucune information sur les collaborateurs scientifiques, ce qui laissait 176 lignes directrices propices à l’analyse. Au total, il y avait 2495 collaborateurs (auteurs et membres de comité) : 1343 (53,8 %) spécialistes autres que des médecins de famille, 423 (17,0 %) médecins de famille, 141 (5,7 %) infirmières, 75 (3,0 %) pharmaciens, 269 (10,8 %) autres cliniciens, 203 (8,1 %) scientifiques non cliniciens et 41 (1,6 %) collaborateurs de profession inconnue. La proportion des collaborateurs de ces professions différait significativement entre les lignes directrices nationales et provinciales, de même qu’entre les lignes directrices financées par l’industrie et celles qui ne l’étaient pas (p < 0,001 dans les 2 cas). Dans le cas des lignes directrices de pratique clinique provinciales, 30,8 % des collaborateurs étaient des médecins de famille et 37,3 % étaient d’autres spécialistes, comparativement à 13,9 % et à 57,4 %, respectivement, dans le cas des lignes directrices nationales. Parmi les lignes directrices financées par l’industrie, 7,8 % des collaborateurs étaient des médecins de famille et 68,6 % étaient d’autres spécialistes, comparativement à 19,4 % et à 49,9 %, respectivement, parmi les lignes directrices qui n’étaient pas financées par l’industrie. Les conflits d’intérêts n’étaient pas rapportés dans 68,9 % des cas. Lorsqu’ils l’étaient, les énoncés sur les conflits d’intérêts se rapportaient à 48,6 % aux spécialistes autres que les médecins de famille, à 30,0 % aux pharmaciens, à 27,7 % aux médecins de famille et à 10,0 % ou moins aux autres groupes; les différences étaient statistiquement significatives (p < 0,001). Conclusion Les spécialistes autres que les médecins de famille sont plus nombreux que tous les autres fournisseurs de soins de santé et sont plus de 3 fois plus enclins à collaborer aux lignes directrices en soins primaires que ne le sont les médecins de famille. Les énoncés sur les conflits d’intérêts n’apparaissaient que dans une minorité de lignes directrices, et lorsqu’ils apparaissaient, les spécialistes autres que les médecins de famille étaient plus enclins à les rapporter. Les lignes directrices ciblant les médecins de famille devraient compter plus de médecins de famille et de soins primaires et moins de collaborateurs en conflit d’intérêts.

  9. Transition aux normes comptables IAS/IFRS, discipline de march et adquation des fonds

    E-print Network

    Paris-Sud XI, Université de

    Transition aux normes comptables IAS/IFRS, discipline de marché et adéquation des fonds propres aux comptables IAS/IFRS a contraint les banques à assurer une meilleure adéquation des fonds propres aux risques contribuer à étendre aux banques la littérature empirique traitant des effets économiques du passage aux IAS/IFRS

  10. L'Anse Aux Meadows, Newfoundland

    NASA Technical Reports Server (NTRS)

    2008-01-01

    L'Anse aux Meadows is a site on the northernmost tip of the island of Newfoundland, located in the Province of Newfoundland and Labrador, Canada, where the remains of a Viking village were discovered in 1960 by the Norwegians Helge and Anne Ingstad. The only authenticated Viking settlement in North America outside Greenland, it was the site of a multi-year archaeological dig that found dwellings, tools and implements that verified its time frame. The settlement, dating more than five hundred years before Christopher Columbus, contains the earliest European structures in North America. Named a World Heritage site by UNESCO, it is thought by many to be the semi-legendary 'Vinland' settlement of explorer Leif Ericson around AD 1000. The settlement at L'Anse aux Meadows consisted of at least eight buildings, including a forge and smelter, and a lumber yard that supported a shipyard. The largest house measured 28.8 by 15.6 m and consisted of several rooms. Sewing and knitting tools found at the site indicate women were present at L'Anse aux Meadows

    The image was acquired on September 14, 2007, covers an area of 14.2 x 14.6 km, and is located at 51.5 degrees north latitude, 55.6 degrees west longitude.

    The U.S. science team is located at NASA's Jet Propulsion Laboratory, Pasadena, Calif. The Terra mission is part of NASA's Science Mission Directorate.

  11. Contribution to Thomas D. & G. S. Dieckmann (eds.): SEA ICE -AN INTRODUCTION TO ITS PHYSICS, BIOLOGY , CHEMISTRY AND GEOLOGY, Blackwell Science, London, 2003, pp. 22-81

    E-print Network

    Eicken, Hajo

    1 Contribution to Thomas D. & G. S. Dieckmann (eds.): SEA ICE - AN INTRODUCTION TO ITS PHYSICS characteristics relevant for microwave remote sensing are covered by Tucker et al. [1992] and Hallikainen discussion of ice growth models. A useful summary and review of sea-ice physical property data sets

  12. Barrier-Free Design: Access to and Use of Buildings by Physically Disabled People = Amenagement pour Acces Facile: Acces Facile aux Immeubles et Leur Utilisation par les Personnes Handicapees.

    ERIC Educational Resources Information Center

    Public Works Canada, Ottawa (Ontario).

    The manual describes, for people with physical disabilities, a building standard of accessibility and the policy for its application. Policies address both new construction and renovation work based on principles of building accessibility to a broad range of users, public service accessibility, and equality of access to employment opportunities.…

  13. DIVULGATION FINANCIERE ET TRANSITION AUX IAS-IFRS

    E-print Network

    Paris-Sud XI, Université de

    1 DIVULGATION FINANCIERE ET TRANSITION AUX IAS-IFRS CONTENU ET DETERMINANTS La mise en place progressive du nouveau référentiel comptable communément appelé IAS-IFRS a imposé aux sociétés concernées un. The progressive installation of the new acounting framework commonly called IAS-IFRS requires from the companies

  14. DIVULGATION FINANCIERE ET TRANSITION AUX IAS-IFRS

    E-print Network

    Boyer, Edmond

    DIVULGATION FINANCIERE ET TRANSITION AUX IAS-IFRS LE ROLE DU COMITE D'AUDIT ET DES AUDITEURS Le passage au nouveau référentiel IFRS a imposé aux sociétés concernées un important effort de communication of the new accounting framework commonly called IAS-IFRS requires from the companies concerned

  15. Des pionniers autoconstructeurs aux cooprateurs : histoire des Castors en Aquitaine

    E-print Network

    Boyer, Edmond

    Des pionniers autoconstructeurs aux coopérateurs : histoire des Castors en Aquitaine Julie ­ Histoire des Castors en Aquitaine - 2010 2 Préambule Ce travail est un manuscrit en cours de travail. Il Castors en Aquitaine, des pionniers autoconstructeurs aux coopérateurs (1948-1970) initialement traité

  16. MASTER RECHERCHE EN Littrature franaise : de la Renaissance aux Lumires

    E-print Network

    Gutkin, Boris

    1 MASTER RECHERCHE EN Littérature française : de la Renaissance aux Lumières ENSPARIS 3PARIS 4 Master de littérature française ­ De la Renaissance aux Lumières Département Littérature et Langages : Date et signature : #12;2 MASTER RECHERCHE EN Littérature française : de la Renaissance

  17. Une Nouvelle Technique de Recalage d'Images avec des Contraintes aux Bords Libres : Application aux Mammographies

    E-print Network

    Cohen, Laurent

    Mammographies A New Image Registration Technique With Free Boundary Constraints : Application To Mammography F les niveaux de gris pour le recalage des mammographies. Contrairement aux mod`eles habituels, ce´ements finis. Pour finir, nous appliquons cet algo- rithme aux mammographies. Mots Clef Minimisation d

  18. Center For Theoretical Geo/Cosmo Plasma Physics Dr. Tom Chang is internationally known for his contributions in space plasma physics,

    E-print Network

    Center For Theoretical Geo/Cosmo Plasma Physics Personnel Dr. Tom Chang is internationally known Physics at the Massachusetts Institute of Technology. In addition to his two Ph.D.'s in theoretical in Theoretical Geo/Cosmo Plasma Physics, and the Chapman Conference on Micro/Meso Scale Phenomena in Space

  19. Guy Michelat Croyances aux parasciences : dimensions sociales et culturelles

    E-print Network

    Boyer, Edmond

    -2969_1986_num_27_2_2302 #12;Résumé L'essor des parasciences au sein de nos sociétés semble constituer un fait MICHELAT Croyances aux parasciences : dimensions sociales et culturelles* Résumé L'essor des parasciences

  20. A Physical Model for the Evolving Ultraviolet Luminosity Function of High Redshift Galaxies and their Contribution to the Cosmic Reionization

    NASA Astrophysics Data System (ADS)

    Cai, Zhen-Yi; Lapi, Andrea; Bressan, Alessandro; De Zotti, Gianfranco; Negrello, Mattia; Danese, Luigi

    2014-04-01

    We present a physical model for the evolution of the ultraviolet (UV) luminosity function of high-redshift galaxies, taking into account in a self-consistent way their chemical evolution and the associated evolution of dust extinction. Dust extinction is found to increase fast with halo mass. A strong correlation between dust attenuation and halo/stellar mass for UV selected high-z galaxies is thus predicted. The model yields good fits of the UV and Lyman-? (Ly?) line luminosity functions at all redshifts at which they have been measured. The weak observed evolution of both luminosity functions between z = 2 and z = 6 is explained as the combined effect of the negative evolution of the halo mass function; of the increase with redshift of the star formation efficiency due to the faster gas cooling; and of dust extinction, differential with halo mass. The slope of the faint end of the UV luminosity function is found to steepen with increasing redshift, implying that low luminosity galaxies increasingly dominate the contribution to the UV background at higher and higher redshifts. The observed range of the UV luminosities at high z implies a minimum halo mass capable of hosting active star formation M crit <~ 109.8 M ?, which is consistent with the constraints from hydrodynamical simulations. From fits of Ly? line luminosity functions, plus data on the luminosity dependence of extinction, and from the measured ratios of non-ionizing UV to Lyman-continuum flux density for samples of z ~= 3 Lyman break galaxies and Ly? emitters, we derive a simple relationship between the escape fraction of ionizing photons and the star formation rate. It implies that the escape fraction is larger for low-mass galaxies, which are almost dust-free and have lower gas column densities. Galaxies already represented in the UV luminosity function (M UV <~ -18) can keep the universe fully ionized up to z ~= 6. This is consistent with (uncertain) data pointing to a rapid drop of the ionization degree above z ~= 6, such as indications of a decrease of the comoving emission rate of ionizing photons at z ~= 6, a decrease of sizes of quasar near zones, and a possible decline of the Ly? transmission through the intergalactic medium at z > 6. On the other hand, the electron scattering optical depth, ?es, inferred from cosmic microwave background (CMB) experiments favor an ionization degree close to unity up to z ~= 9-10. Consistency with CMB data can be achieved if M crit ~= 108.5 M ?, implying that the UV luminosity functions extend to M UV ~= -13, although the corresponding ?es is still on the low side of CMB-based estimates.

  1. Arabidopsis SHR and SCR transcription factors and AUX1 auxin influx carrier control the switch between adventitious rooting and xylogenesis in planta and in in vitro cultured thin cell layers

    PubMed Central

    Della Rovere, F.; Fattorini, L.; D’Angeli, S.; Veloccia, A.; Del Duca, S.; Cai, G.; Falasca, G.; Altamura, M. M.

    2015-01-01

    Background and Aims Adventitious roots (ARs) are essential for vegetative propagation. The Arabidopsis thaliana transcription factors SHORT ROOT (SHR) and SCARECROW (SCR) affect primary/lateral root development, but their involvement in AR formation is uncertain. LAX3 and AUX1 auxin influx carriers contribute to primary/lateral root development. LAX3 expression is regulated by SHR, and LAX3 contributes to AR tip auxin maximum. In contrast, AUX1 involvement in AR development is unknown. Xylogenesis is induced by auxin plus cytokinin as is AR formation, but the genes involved are largely unknown. Stem thin cell layers (TCLs) form ARs and undergo xylogenesis under the same auxin plus cytokinin input. The aim of this research was to investigate SHR, SCR, AUX1 and LAX3 involvement in AR formation and xylogenesis in intact hypocotyls and stem TCLs in arabidopsis. Methods Hypocotyls of scr-1, shr-1, lax3, aux1-21 and lax3/aux1-21 Arabidopsis thaliana null mutant seedlings grown with or without auxin plus cytokinin were examined histologically, as were stem TCLs cultured with auxin plus cytokinin. SCR and AUX1 expression was monitored using pSCR::GFP and AUX1::GUS lines, and LAX3 expression and auxin localization during xylogenesis were monitored by using LAX3::GUS and DR5::GUS lines. Key Results AR formation was inhibited in all mutants, except lax3. SCR was expressed in pericycle anticlinally derived AR-forming cells of intact hypocotyls, and in cell clumps forming AR meristemoids of TCLs. The apex was anomalous in shr and scr ARs. In all mutant hypocotyls, the pericycle divided periclinally to produce xylogenesis. Xylary element maturation was favoured by auxin plus cytokinin in shr and aux1-21. Xylogenesis was enhanced in TCLs, and in aux1-21 and shr in particular. AUX1 was expressed before LAX3, i.e. in the early derivatives leading to either ARs or xylogenesis. Conclusions AR formation and xylogenesis are developmental programmes that are inversely related, but they involve fine-tuning by the same proteins, namely SHR, SCR and AUX1. Pericycle activity is central for the equilibrium between xylary development and AR formation in the hypocotyl, with a role for AUX1 in switching between, and balancing of, the two developmental programmes. PMID:25617411

  2. Soins Aux Brules Apres Un Accident Nucleaire

    PubMed Central

    Bargues, L.; Donat, N.; Jault, P.; Leclerc, T.

    2010-01-01

    Summary Les lésions radiques sont dues le plus souvent à des radio-isotopes utilisés dans l’industrie. L’explosion d’un réacteur nucléaire, les armes nucléaires ou une attaque terroriste constituent un risque d’afflux massif de victimes brûlées. Les radiations ionisantes occasionnent des brûlures thermiques, des syndromes d’irradiation aiguë avec pancytopénie et des signes cutanés retardés. Après une période de latence, des symptômes cutanés apparaissent et leur profondeur est proportionnelle à la dose reçue. Les protocoles habituels de réanimation des brûlés s’appliquent ici. Les soins aux irradiés nécessitent aussi une mesure de l’irradiation et une décontamination par des personnels entraînés. En cas de catastrophe nucléaire, la priorité est d’optimiser les structures existantes et de préserver les moyens pour les patients ayant la plus forte probabilité de survie. Après un accident nucléaire isolé, les difficultés dans les centres de brûlés sont l’évaluation de la profondeur et les techniques chirurgicales de couverture cutanée. La préparation des moyens médicaux et des centres de brûlés est nécessaire pour faire face à la prise en charge de ces brûlures différentes et complexes. PMID:21991218

  3. A physical model for the evolving ultraviolet luminosity function of high redshift galaxies and their contribution to the cosmic reionization

    SciTech Connect

    Cai, Zhen-Yi; Lapi, Andrea; Bressan, Alessandro; De Zotti, Gianfranco; Danese, Luigi [Astrophysics Sector, SISSA, Via Bonomea 265, I-34136 Trieste (Italy); Negrello, Mattia, E-mail: zcai@sissa.it [INAF-Osservatorio Astronomico di Padova, Vicolo dell'Osservatorio 5, I-35122 Padova (Italy)

    2014-04-10

    We present a physical model for the evolution of the ultraviolet (UV) luminosity function of high-redshift galaxies, taking into account in a self-consistent way their chemical evolution and the associated evolution of dust extinction. Dust extinction is found to increase fast with halo mass. A strong correlation between dust attenuation and halo/stellar mass for UV selected high-z galaxies is thus predicted. The model yields good fits of the UV and Lyman-? (Ly?) line luminosity functions at all redshifts at which they have been measured. The weak observed evolution of both luminosity functions between z = 2 and z = 6 is explained as the combined effect of the negative evolution of the halo mass function; of the increase with redshift of the star formation efficiency due to the faster gas cooling; and of dust extinction, differential with halo mass. The slope of the faint end of the UV luminosity function is found to steepen with increasing redshift, implying that low luminosity galaxies increasingly dominate the contribution to the UV background at higher and higher redshifts. The observed range of the UV luminosities at high z implies a minimum halo mass capable of hosting active star formation M {sub crit} ? 10{sup 9.8} M {sub ?}, which is consistent with the constraints from hydrodynamical simulations. From fits of Ly? line luminosity functions, plus data on the luminosity dependence of extinction, and from the measured ratios of non-ionizing UV to Lyman-continuum flux density for samples of z ? 3 Lyman break galaxies and Ly? emitters, we derive a simple relationship between the escape fraction of ionizing photons and the star formation rate. It implies that the escape fraction is larger for low-mass galaxies, which are almost dust-free and have lower gas column densities. Galaxies already represented in the UV luminosity function (M {sub UV} ? –18) can keep the universe fully ionized up to z ? 6. This is consistent with (uncertain) data pointing to a rapid drop of the ionization degree above z ? 6, such as indications of a decrease of the comoving emission rate of ionizing photons at z ? 6, a decrease of sizes of quasar near zones, and a possible decline of the Ly? transmission through the intergalactic medium at z > 6. On the other hand, the electron scattering optical depth, ?{sub es}, inferred from cosmic microwave background (CMB) experiments favor an ionization degree close to unity up to z ? 9-10. Consistency with CMB data can be achieved if M {sub crit} ? 10{sup 8.5} M {sub ?}, implying that the UV luminosity functions extend to M {sub UV} ? –13, although the corresponding ?{sub es} is still on the low side of CMB-based estimates.

  4. ASSIMILATION DES EXPRIENCES DE HALL ET FARADAY AUX EFFETS DU GYROSCOPE;

    E-print Network

    Paris-Sud XI, Université de

    269 ASSIMILATION DES EXPÉRIENCES DE HALL ET FARADAY AUX EFFETS DU GYROSCOPE; PAR 31. B. ÉLIE. L élémentaires suivant O.x, c'est-à-dire perpendiculaires aux deux premières. Or le gyroscope présente le fait

  5. PHYSICS OF ELEMENTARY PARTICLES AND FIELDS: B ? ?(?, ø)?(') Decays and NLO Contributions in pQCD Approach

    NASA Astrophysics Data System (ADS)

    Zhang, Zhi-Qing; Xiao, Zhen-Jun

    2009-05-01

    By employing the perturbative QCD (pQCD) factorization approach, we calculate some important next-to-leading-order (NLO) contributions to the two-body charmless hadronic decays B+ ? ?+ ?(') and B0 ? ?0 (?, ø)?('), induced by the vertex QCD corrections, the quark-loops as well as the chromo-magnetic penguins. From the numerical results and phenomenological analysis we find that (a) for B± ? ?±?(') (B0 ? ?0 (?, ø)?(') decays, the partial NLO contributions to branching ratios are small (large) in magnitude; and (b) the pQCD predictions for ACPdir(B± ? ?±?(')) are consistent with the data, while the predicted ACP(B0 ? ?0(?)?(')) are generally large in magnitude and could be tested by the forthcoming LHCb experiments.

  6. Contribution of Physical Fitness, Cerebrovascular Reserve and Cognitive Stimulation to Cognitive Function in Post-Menopausal Women

    PubMed Central

    Eskes, Gail A.; Longman, Stewart; Brown, Allison D.; McMorris, Carly A.; Langdon, Kristopher D.; Hogan, David B.; Poulin, Marc

    2010-01-01

    Studies of the effects of physical fitness on cognition suggest that exercise can improve cognitive abilities in healthy older adults, as well as delay the onset of age-related cognitive decline. The mechanisms for the positive benefit of exercise and how these effects interact with other variables known to influence cognitive function (e.g., involvement in cognitive activities) are less well understood. The current study examined the associations between the physical fitness, cerebrovascular blood flow regulation and involvement in cognitive activities with neuropsychological function in healthy post-menopausal women. Methods: Forty-two healthy women between the ages of 55 and 90 were recruited. Physical fitness (V?O2 max), cerebrovascular reserve (cerebral blood flow during rest and response to an increase in end-tidal (i.e., arterial) PCO2), and cognitive activity (self-reported number and hours of involvement in cognitive activities) were assessed. The association of these variables with neuropsychological performance was examined through linear regression. Results: Physical fitness, cerebrovascular reserve and total number of cognitive activities (but not total hours) were independent predictors of cognitive function, particularly measures of overall cognitive performance, attention and executive function. In addition, prediction of neuropsychological performance was better with multiple variables than each alone. Conclusions: Cognitive function in older adults is associated with multiple factors, including physical fitness, cerebrovascular health and cognitive stimulation. Interestingly, cognitive stimulation effects appear related more to the diversity of activities, rather than the duration of activity. Further examination of these relationships is ongoing in a prospective cohort study. PMID:21048898

  7. Document1 Bordigoni 04/07/05 1 Sara aux Saintes-Maries-de-la-Mer,

    E-print Network

    Boyer, Edmond

    Document1 Bordigoni 04/07/05 1 Sara aux Saintes-Maries-de-la-Mer, métaphore de la présence gitane dans le " monde des Gadjé " Le pèlerinage des Gitans aux Saintes-Maries-de-la-Mer est devenu, au XXe'affirmation de leur foi chrétienne. En 1955, la revue Études tsiganes consacre son numéro 4 aux Saintes-Maries-de-la-Mer

  8. Document de Recherche "La fiscalit des fonds de pension aux Etats-Unis"

    E-print Network

    Paris-Sud XI, Université de

    Document de Recherche n° 2006-16 "La fiscalité des fonds de pension aux Etats-Unis" Anne LAVIGNE fonds de pension aux Etats-Unis 1 Anne Lavigne Laboratoire d'économie d'Orléans, UMR 6221 ­ CNRS dispositifs fiscaux applicables aux fonds de pension, que ces dispositifs concernent les employés, les

  9. Distinct contributions of adverse childhood experiences and resilience resources: a cohort analysis of adult physical and mental health.

    PubMed

    Logan-Greene, Patricia; Green, Sara; Nurius, Paula S; Longhi, Dario

    2014-01-01

    Although evidence is rapidly amassing as to the damaging potential of early life adversities on physical and mental health, as yet few investigations provide comparative snapshots of these patterns across adulthood. This population-based study addresses this gap, examining the relationship of adverse childhood experiences (ACEs) to physical and mental health within a representative sample (n = 19,333) of adults, comparing the prevalence and explanatory strength of ACEs among four birth cohorts spanning ages 18-79. This assessment accounts for demographic and socioeconomic factors, as well as both direct and moderating effects of resilience resources (social/emotional support, life satisfaction, and sleep quality). Findings demonstrate (1) increasing trends of reported ACEs across younger cohorts, including time period shifts such as more prevalent family incarceration, substance abuse, and divorce, (2) significant bivariate as well as independent associations of ACEs with poor health within every cohort, controlling for multiple covariates (increasing trends in older age for physical health), and (3) robust patterns wherein resilience resources moderated ACEs, indicating buffering pathways that sustained into old age. Theoretical and practice implications for health professionals are discussed. PMID:25255340

  10. A global treatment of VMD physics up to the ?: II. ? decay and hadronic contributions to g-2

    NASA Astrophysics Data System (ADS)

    Benayoun, M.; David, P.; Delbuono, L.; Leitner, O.

    2010-08-01

    Relying on the Hidden Local Symmetry (HLS) model equipped with a mechanism breaking the U(3)/SU(3)/SU(2) symmetries and generating a dynamical vector meson mixing, it has been shown that a global fit successfully describes the cross sections for the e + e -? ? + ? -, e + e -?( ? 0/ ?) ? and e + e -? ? 0 ? + ? - annihilation channels. One extends this global fit in order to include also the dipion spectra from the ? decay, taking into account all reported information on their statistical and systematic errors. A model accounting for lineshape distortions of the ? ± spectrum relative to ? 0 is also examined when analyzing the ? data behavior within the global fit framework. One shows that a successful account for e + e - annihilation data and ? spectra can be simultaneously reached. Then, issues related with non-perturbative hadronic contributions to the muon g-2 are examined in details. It is shown that all e + e - data considered together allow for improved and motivated estimates for the a ? ( ? + ? -), the ? + ? - loop contribution to the muon g-2; for instance, integrated between 0.630 and 0.958 GeV, we find a ? ( ? + ? -)=359.62±1.62 (in units of 10-10), a 40% improvement of the current uncertainty. The effects of the various ? samples in the context of a global fit procedure leads to conclude that different lineshape distortions are revealed by the ALEPH, BELLE and CLEO data samples. Relying on global fits to the data quoted above, one also provides motivated estimates of the ? + ? -, ? 0 ?, ? ? and ? 0 ? + ? - contributions to a ? up to 1 GeV with the smallest possible uncertainties. These estimates are based on various global fit configurations, each yielding a good probability.

  11. The contribution of Maria Sklodowska-Curie and Pierre Curie to Nuclear and Medical Physics. A hundred and ten years after the discovery of radium.

    PubMed

    Diamantis, Aristidis; Magiorkinis, Emmanouil; Papadimitriou, Athanasios; Androutsos, Georgios

    2008-01-01

    This review aims to commemorate the life, and the accomplishments of Pierre and Marie Curie in Physics and in Medicine. Although they are primarily known for their discoveries of the elements of radium and polonium, which took place two years after the discovery of radioactivity by Henry Becquerel, Pierre's discovery of the piezo-electric phenomenon, his research on crystal symmetry, magnetism and paramagnetic substances, are equally important. With the discovery of the two radioactive elements, Pierre and Marie Curie established the new field of Nuclear Physics. It is not an over-statement to say that their discovery contributed much to our modern way of life. Marie received the Nobel Prize twice and later she became the first woman to become member of the French Academy of Sciences. Today, both Pierre and Marie Curie rest in Panthéon, in Paris. PMID:18392225

  12. Contribution des surfaces saturées et des versants aux flux d'eau et d'éléments exportés en période de crue: traçage à l'aide du carbone organique dissous et de la silice. Cas du petit bassin versant du Strengbach (Vosges, France)

    NASA Astrophysics Data System (ADS)

    Idir, Samir; Probst, Anne; Viville, Daniel; Probst, Jean-Luc

    1999-01-01

    Two contributing areas have been determined in the small forested Strengbach catchment by using dissolved organic carbon (DOC) and dissolved silica as the most efficient chemical tracers of stream water origin during a storm event. Dissolved silica represents the deep layers of the hillslopes which contributes 71-75 % of the total storm runoff and 85-99 % of the fluxes of major elements exported by the Strengbach. DOC corresponds to the saturated areas which occupy only 2 % of the total catchment area but which supply 25-29 % of the total streamflow and 56 % of the DOC stream flux. The specific fluxes of water (L·s -1·ha -1) and elements (kg·ha -1) are much more important in the saturared areas than in the rest of the catchment.

  13. The contribution of comets in Near-Earth Object and Main Belt populations and the role of collisions in the physical properties of members of these populations.

    NASA Astrophysics Data System (ADS)

    Michel, P.

    2008-09-01

    The population of Near-Earth Objects (NEOs) is composed of small bodies of various origins. Groundbased observational programs have been developed to perform their inventory and to determine their physical properties. However, these observations contain many biases and the total population of NEOs with diameters down to a few hundreds of meters has not been identified yet. In recent years, the main sources of NEOs have been characterized [1]. Most of these bodies come from the asteroid main belt and the Jupiter-family comets and their source regions are linked to transport mechanisms (mean motion and secular resonances, slow diffusion mechanisms) to the NEO-space. It has then been possible to construct a complete model of the steady-state orbital, size and albedo distribution of NEOs and to determine the level of contribution of each of their sources, including the contribution of Jupiter-family comets. However, nothing is known regarding the contribution of longperiod comets. Physical observations have been conducted in order to identify potential dormant or extinct comets among small bodies in the NEO population and to determine the fraction of "comet candidates within the total NEO population. Combining the results of these observations with our model of NEO population to evaluate source region probabilities [1], it was found that 8 +/- 5% of the total asteroid-like NEO population may have originated as comets from the outer Solar System [2]. In the population of Main Belt (MB) asteroids, three members are known to display transient comet-like physical characteristics, including prolonged periods of dust emission leading to the formation of radiation pressure-swept tails [3]. These physical properties are most naturally explained as the result of sub-limation of near-surface ice from what are, dynamically, mainbelt asteroids (hence the name "main-belt comets" (MBCs) or, equivalently "icy asteroids"). No pausible dynamical path to the asteroid belt from the cometary reservoirs in the Oort cloud or Kuiper belt has been established. Thus, we may have an unsuspected icy region closer to the Sun than expected. However, it has also been suggested that numerous comets may have been captured during a violent period of planetary orbital evolution in the early stages of our Solar System [4]. Most of these bodies experience collisions during their lifetime, which can either disrupt them or modify their physical properties. In particular, collisions are suspected to be the triggering mechanism for the activation of MBCs. Thus the collisional process needs a good understanding in order to determine its contribution in the evolution of these small bodies, as a function of their physical properties. We have recently made a major improvement in the simulations of a small body disruption by introducing a model of fragmentation of porous material which will allows us to study the impact process on cometary bodies [5]. Moreover, for bodies dominated by gravity, our simulations includes the explicit computation of the formation of aggregates during the gravitational reaccumulation of small fragments, allowing us to obtain information on their spin, the number of boulders composing them or lying on their surface, and their shape. We will present the first and preliminary results of this process taking as examples some asteroid families that we reproduced successfully with our previous simulations [6], [7], [8], [9], [10], and their possible implications on the properties of small bodies generated by a disruption. Such information can for instance be compared with data provided by the Japanese space mission Hayabusa of the asteroid Itokawa, a body now understood to be a fragment of a larger parent body. For the population of comets, improving our understanding of their collisional response can then allow us to better characterize their collisional evolution, lifetime and other properties [11] which can have some implications on their contribution in "asteroidal" populations. It is also clear that future s

  14. The relative contribution of profile body shape and weight to judgements of women's physical attractiveness in Britain and Malaysia.

    PubMed

    Swami, Viren; Tovée, Martin J

    2007-12-01

    Ninety-six Malaysian and British men rated for physical attractiveness a set of photographs of real women in profile, with known body mass index (BMI) and waist-to-hip ratio (WHR). Results showed that BMI accounted for the greater amount of variance in all settings. There were also significant differences in preferences for body weight, with low resource, low socioeconomic status (SES) raters preferring a significantly heavier partner than high resource, high SES raters. The disparity with previous findings using line drawings of women in profile was discussed in terms of the weaknesses of line-drawn stimuli. PMID:18089286

  15. POLYMORPHISME DU COMPOS DFINI Mn Bi AUX TEMPRATURES

    E-print Network

    Paris-Sud XI, Université de

    143 POLYMORPHISME DU COMPOSÉ DÉFINI Mn Bi AUX TEMPÉRATURES DE DISPARITION ET DE RÉAPPARITION DE L correspond à la disparition de l'aimantation spontanée de l'alliage MnBi, une variation brusque du paramètre à l'antiferroma- gnétisme. Le composé défini MnBi est ferromagnétique; l'aimantation spontanée

  16. Plant embryogenesis requires AUX/LAX-mediated auxin influx.

    PubMed

    Robert, Hélène S; Grunewald, Wim; Sauer, Michael; Cannoot, Bernard; Soriano, Mercedes; Swarup, Ranjan; Weijers, Dolf; Bennett, Malcolm; Boutilier, Kim; Friml, Ji?í

    2015-02-15

    The plant hormone auxin and its directional transport are known to play a crucial role in defining the embryonic axis and subsequent development of the body plan. Although the role of PIN auxin efflux transporters has been clearly assigned during embryonic shoot and root specification, the role of the auxin influx carriers AUX1 and LIKE-AUX1 (LAX) proteins is not well established. Here, we used chemical and genetic tools on Brassica napus microspore-derived embryos and Arabidopsis thaliana zygotic embryos, and demonstrate that AUX1, LAX1 and LAX2 are required for both shoot and root pole formation, in concert with PIN efflux carriers. Furthermore, we uncovered a positive-feedback loop between MONOPTEROS (ARF5)-dependent auxin signalling and auxin transport. This MONOPTEROS-dependent transcriptional regulation of auxin influx (AUX1, LAX1 and LAX2) and auxin efflux (PIN1 and PIN4) carriers by MONOPTEROS helps to maintain proper auxin transport to the root tip. These results indicate that auxin-dependent cell specification during embryo development requires balanced auxin transport involving both influx and efflux mechanisms, and that this transport is maintained by a positive transcriptional feedback on auxin signalling. PMID:25617434

  17. PASSAGE OBLIGATOIRE AUX NORMES COMPTABLES IAS/IFRS, CONTRAINTES EN

    E-print Network

    Paris-Sud XI, Université de

    PASSAGE OBLIGATOIRE AUX NORMES COMPTABLES IAS/IFRS, CONTRAINTES EN LIQUIDITE ET RATIONNEMENT DU'adoption obligatoire par les banques des normes comptables IAS/IFRS, réputées d'une qualité supérieure pour la prise de obligatoire des normes comptables IAS/IFRS, conséquences économiques, banques, rationnement du crédit Abstract

  18. CULTURE IN VITRO DU ROTAVIRUS ASSOCI AUX DIARRHES

    E-print Network

    Paris-Sud XI, Université de

    CULTURE IN VITRO DU ROTAVIRUS ASSOCIÉ AUX DIARRHÉES NÉONATALES DU VEAU R. L'HARIDON R. SCHERRER) RÉSUMÉ Une cinquantaine d'échantillons de fèces diarrhéiques, contenant le rotavirus du veau en quantité. INTRODUCTION I,'association d'un rotavirus avec un fort pourcentage de cas de diarrhées néo- natales du veau en

  19. Bienvenue aux gays du monde entier . Tourisme gay et mondialisation

    E-print Network

    Paris-Sud XI, Université de

    - 1 - « Bienvenue aux gays du monde entier ». Tourisme gay et mondialisation Emmanuel JAURAND-94010 CRETEIL Résumé Le tourisme gay est le tourisme identitaire et communautaire des homosexuels rapport à la globalisation, le tourisme gay peut apparaître paradoxal. Il repose en partie sur des

  20. APPLICATION DES PALIERS A GAZ AUX GYROSCOPES Par G. GOBERT,

    E-print Network

    Paris-Sud XI, Université de

    43 APPLICATION DES PALIERS A GAZ AUX GYROSCOPES Par G. GOBERT, Centre d'Études Nucléaires de Saclay gyroscope dont le rotor de 4 cm de diamètre pesant plusieurs centaines de grammes tourne à une vitesse to the construction of a gyroscope. The rotor is 4 cm in diameter and runs at 180 000 r. p. m. Its weight is 500 g. LE

  1. PHYSICS OF ELEMENTARY PARTICLES AND FIELDS: Contributions of qqqqq¯ Components to Axial Charges of Proton and N(1440)

    NASA Astrophysics Data System (ADS)

    Yuan, Si-Gang; An, Chun-Sheng; He, Jun

    2010-10-01

    The axial charges of the proton and N(1440) are studied in the framework of an extended constituent quark model (CQM) including qqqqq¯ components. The cancellation between the contributions of qqq components and qqqqq¯ components gives a natural explanation to the experimental value of the proton axial charge, which can not be well reproduced in the traditional CQM even after the SU(6) otimes O(3) symmetry breaking is taken into account. The experimental value of axial charge pins down the proportion of the qqqqq¯ component in the proton to about 20%, which is consistent with the ones given by the strong decay widths and helicity amplitudes. Besides, an axial charge for N(1440) about 1 is predicted with 30% qqqqq¯ component, which is obtained by the strong and electromagnetic decays.

  2. Synoptic data for solar-terrestrial physics: The U.K. contribution to long-term monitoring

    NASA Astrophysics Data System (ADS)

    Willis, D. M.; Hewish, A.; Rishbeth, H.; Rycroft, M. J.

    1994-05-01

    In 1989 the Council of the Royal Society of London established a Study Group to investigate the current status and future requirements of solar-terrestrial monitoring in the United Kingdom. This paper summarizes the conclusions and recommendations of the U.K. Study Group. The rationale for regular synoptic monitoring of the solar terrestrial environment is reviewed briefly. Instruments used for solar-terrestrial monitoring in U.K.-supported research programs are listed, with special emphasis on research instruments that produce monitoring data. Some important applications of solar-terrestrial monitoring are outlined and criteria are presented for determining the priorities of various monitoring operations. High priority is attached to monitoring operations that are important for: (1) deriving geophysical models and reference systems; (2) calculating the principal solar-geophysical indices; (3) producing long time series of good data, especially at sites of particular geophysical interest; (4) detecting global changes; (5) contributing to real-time forecasts of solar-terrestrial conditions, or to longer-term predictions and planning; and (6) providing background data for other observations and experiments. The existing U.K. programs of solar-terrestrial monitoring make a highly prestigious contribution to national and international scientific activity. Synoptic measurements of the solar-terrestrial environment are crucial for underpinning present and future programs of basic, strategic and applied research. Therefore, a core program of synoptic monitoring must be maintained in the U.K. It is recommended that this core program should be financed centrally through the Research Councils and reviewed quinquennially.

  3. Contribution of fibrinolysis to the physical component summary of the SF-36 after acute submassive pulmonary embolism.

    PubMed

    Stewart, Lauren K; Peitz, Geoffrey W; Nordenholz, Kristen E; Courtney, D Mark; Kabrhel, Christopher; Jones, Alan E; Rondina, Matthew T; Diercks, Deborah B; Klinger, James R; Kline, Jeffrey A

    2015-08-01

    Acute pulmonary embolism (PE) can diminish patient quality of life (QoL). The objective was to test whether treatment with tenecteplase has an independent effect on a measurement that reflects QoL in patients with submassive PE. This was a secondary analysis of an 8-center, prospective randomized controlled trial, utilizing multivariate regression to control for predefined predictors of worsened QoL including: age, active malignancy, history of PE or deep venous thrombosis (DVT), recurrent PE or DVT, chronic obstructive pulmonary disease and heart failure. QoL was measured with the physical component summary (PCS) of the SF-36. Analysis included 76 patients (37 randomized to tenecteplase, 39 to placebo). Multivariate regression yielded an equation f(8, 67), P < 0.001, with R(2) = 0.303. Obesity had the largest effect on PCS (? = -8.6, P < 0.001), with tenecteplase second (? = 4.73, P = 0.056). After controlling for all interactions, tenecteplase increased the PCS by +5.37 points (P = 0.027). In patients without any of the defined comorbidities, the coefficient on the tenecteplase variable was not significant (-0.835, P = 0.777). In patients with submassive PE, obesity had the greatest influence on QoL, followed by use of fibrinolysis. Fibrinolysis had a marginal independent effect on patient QoL after controlling for comorbidities, but was not significant in patients without comorbid conditions. PMID:25433511

  4. Expression and regulation of the early auxin-responsive Aux\\/IAA genes during strawberry fruit development

    Microsoft Academic Search

    Du-juan LiuJian-ye; Jian-ye Chen; Wang-jin Lu

    2011-01-01

    The plant hormone auxin transcriptionally activates Aux\\/IAA genes. Auxin plays an important role in regulating fruit growth and ripening of strawberry and Aux\\/IAA genes have been extensively studied in Arabidopsis, rice and tomato, but little information is available on strawberry fruit. In the present work, two full-length of early\\u000a auxin-responsive Aux\\/IAA genes, termed FaAux\\/IAA1 and FaAux\\/IAA2 respectively, were isolated and

  5. Behavioral responses to orexin, orexin receptor gene expression, and spontaneous physical activity contribute to individual sensitivity to obesity

    PubMed Central

    Boland, Kelsey; Teske, Jennifer A.; Billington, Charles; Kotz, Catherine M.

    2012-01-01

    There is significant variability in diet-induced obesity (DIO) among humans and rodents, which has been associated with differences in intrinsic spontaneous physical activity (SPA). The orexin neuropeptides positively modulate SPA through multiple brain sites, but the effects of DIO on orexin's activity are not well understood. In this study, we tested the hypothesis that DIO sensitivity is mediated by decreased SPA and changes in the function of the orexins. As a DIO model, we used male Sprague-Dawley rats fed a high-fat (HF; 45% kcal from fat) or a low-fat (LF; 10% kcal from fat) diet for 10 wk. We measured SPA before and after HF or LF feeding and expression of orexin receptors by real-time PCR after dietary treatments. We tested DIO effects on orexin signaling by measuring SPA after injection of orexin A in the rostral lateral hypothalamus (RLH) before and after 10 wk of HF feeding. Finally, we tested whether daily orexin A RLH injections prevent DIO caused by HF feeding. Our results show that resistance to DIO is associated with an increase in SPA, SPA after injection of orexin A in RLH, and orexin receptor expression in sites that mediate orexin's effect on SPA, including RLH. We show that daily injections of orexin peptide in RLH prevent DIO without altering food intake. We estimate that the energetic cost of SPA after orexin A RLH injection accounts for approximately 61% of the extra caloric intake associated with HF intake, suggesting additional effects of orexins. In summary, our results suggest that variability in DIO sensitivity is mediated through adaptations in the activity of the orexin peptides and their receptors. PMID:22829584

  6. Contributing to the growth of Physical and Rehabilitation Medicine (PRM): call for a Cochrane Field in PRM.

    PubMed

    Negrini, S; Kiekens, C; Meerpohl, J J; Thomson, D; Zampolini, M; Christodoulou, N; Delarque, A; Gutenbrunner, C; Michail, X

    2015-06-01

    The European Society of Physical and Rehabilitation Medicine (ESPRM), together with the European Journal of PRM and the PRM Section and Board of the European Union of Medical Specialists (UEMS), started an action to establish a relationship with Cochrane (formerly the Cochrane Collaboration). Cochrane is a global, independent network of researchers, professionals, patients, carers and people interested in health, with contributors from more than 130 countries. Its aim is to produce credible, accessible health information that is free from any conflicts of interest. Cochrane produces the Cochrane Library, an evidence-based resource that includes today more than 6300 Cochrane systematic reviews. Cochrane is made up of many different review groups and other entities (such as Centres and Branches), distributed around the world, that are mainly focused on specific healthcare problems (diseases, or organs). Inside Cochrane also Fields have been created, that focus on a dimension of health care other than a specific healthcare problem. A Cochrane Field represents a bridge between Cochrane and the stakeholders of the related healthcare area. The medical specialty of PRM is covering a broad medical domain: it deals with function, activities and participation in a large number of health conditions, mostly but not exclusively musculoskeletal, neurological and cardiorespiratory. Consequently, the currently more than 200 existing Cochrane Reviews are scattered among different groups. A PRM Field could greatly serve to the need of the specialty, spreading the actual Cochrane knowledge, focusing needs today not covered by Cochrane Reviews, facing the intrinsic methodological problems of the specialty. This paper introduces a call for the development of a PRM Cochrane Field, briefly reviewing what Cochrane is and how it is organized, defining the value and identifying a pathway toward the development of a PRM Cochrane Field, and finally shortly reviewing the Cochrane reviews of PRM interest. PMID:25986225

  7. The contribution of lifestyle coaching of overweight patients in primary care to more autonomous motivation for physical activity and healthy dietary behaviour: results of a longitudinal study

    PubMed Central

    2014-01-01

    Background Combined lifestyle interventions (CLIs) have been advocated as an effective instrument in efforts to reduce overweight and obesity. The odds of maintaining higher levels of physical activity (PA) and healthier dietary behaviour improve when people are more intrinsically motivated to change their behaviour. To promote the shift towards more autonomous types of motivation, facilitator led CLIs have been developed including lifestyle coaching as key element. The present study examined the shift in types of motivation to increase PA and healthy dieting among participants of a primary care CLI, and the contribution of lifestyle coaching to potential changes in motivational quality. Methods This prospective cohort study included participants of 29 general practices in the Netherlands that implemented a CLI named ‘BeweegKuur’. Questionnaires including items on demographics, lifestyle coaching and motivation were sent at baseline and after 4 months. Aspects of motivation were assessed with the Behavioural Regulation and Exercise Questionnaire (BREQ-2) and the Regulation of Eating Behaviour Questionnaire (REBS). We performed a drop out analysis to identify selective drop-out. Changes in motivation were analysed with t-tests and effect size interpretations (Cohen’s d), and multivariate regression analysis was used to identify predictors of motivational change. Results For physical activity, changes in motivational regulation were fully in line with the tenets of Self Determination Theory and Motivational Interviewing: participants made a shift towards a more autonomous type of motivation (i.e. controlled types of motivation decreased and autonomous types increased). Moreover, an autonomy supportive coaching style was generally found to predict a larger shift in autonomous types of motivation. For healthy dietary behaviour, however, except for a small decrease in external motivation, no favourable changes in different types of motivation were observed. The relation between coaching and motivation appeared to be influenced by the presence of physical activity guidance in the programme. Conclusions Motivation of participants of a real life primary care CLI had changed towards a more autonomous motivation after 4 months of intervention. Autonomy-supportive lifestyle coaching contributed to this change with respect to physical activity. Lifestyle coaching for healthy diet requires thorough knowledge about the problem of unhealthy dieting and solid coaching skills. PMID:25027848

  8. The Contribution of Youth Sport Football to Weekend Physical Activity for Males Aged 9 to 16 Years: Variability Related to Age and Playing Position.

    PubMed

    Fenton, Sally A; Duda, Joan L; Barrett, Timothy

    2015-05-01

    The aims of this study were (1) to determine minutes of moderate-to-vigorous physical activity (PA) and vigorous PA accrued in youth sport football (also internationally referred to as soccer), and the contribution toward daily weekend moderate-to-vigorous PA and vigorous PA for males aged 9-16 years, and (2) to investigate variability in these outcomes related to age and playing position. One hundred and nine male grassroots footballers (Mean age = 11.98 ± 1.75 years) wore a GT3× accelerometer for 7 days. Weekend youth sport football participation and playing position were recorded. Youth sport football moderate-to-vigorous PA (M = 51.51 ± 17.99) and vigorous PA (M = 27.78 ± 14.55) contributed 60.27% and 70.68% toward daily weekend moderate-to-vigorous PA and vigorous PA, respectively. Overall, 36.70% of participants accumulated ?60 min moderate-to-vigorous PA and 69.70% accrued ? 20 min of vigorous PA during youth sport. For participants aged 13 to16 years, youth sport football moderate-to-vigorous PA and vigorous PA were significantly higher, and contributed a greater amount toward daily weekend moderate-to-vigorous PA and vigorous PA than for participants aged 9-12 years (p = <.01). Youth sport football is an important source of moderate-to-vigorous PA and vigorous PA at the weekend for male youth, and particularly for adolescents. Participation may offer opportunity for weekend engagement in vigorous PA toward health enhancing levels. PMID:25387122

  9. I -INTRODUCTION AUX STATISTIQUES J-P. Croisille

    E-print Network

    Croisille, Jean-Pierre

    I - INTRODUCTION AUX STATISTIQUES J-P. Croisille Universit´e de Lorraine UEL - Ann´ee 2012/2013 Jean-Pierre CROISILLE - Laboratoire LMAM UEL: L'influence des math´ematiques sur la soci´et´e #12´ees/multivari´ees Jean-Pierre CROISILLE - Laboratoire LMAM UEL: L'influence des math´ematiques sur la soci´et´e #12;Donn

  10. Introduction aux probabilites -L2 -annee 2004-2005

    E-print Network

    Pellier, Damien

    proc´eder par tirage au sort parmi tous les candidats, en attribuant un num´ero `a chacun d'entre eux. Les num´eros de de 1 `a n1 correspondent aux candidats de sexe f´eminin (masculin respectivement), les probabilit´e uniforme; la probabilit´e de tout ´ev´enement B de est donn´ee par P[B] = cardB card . A

  11. Physics

    NSDL National Science Digital Library

    K-12 Outreach,

    Physics is the scientific study of the basic principles of the universe, including matter, energy, motion and force, and their interactions. Major topics include classical mechanics, thermodynamics, light and optics, electromagnetism and relativity.

  12. Paternité des articles et intérêts concurrents : une analyse des recommandations aux auteurs des journaux traitant de pratique pharmaceutique

    PubMed Central

    Courbon, Ève; Tanguay, Cynthia; Lebel, Denis; Bussières, Jean-François

    2014-01-01

    RÉSUMÉ Contexte : La présence d’auteurs honorifiques et fantômes ainsi que les intérêts concurrents représentent des difficultés bien documentées, liées à la publication d’articles scientifiques. Il existe des lignes directrices encadrant la rédaction et la publication de manuscrits scientifiques, notamment celles de l’International Committee of Medical Journal Editors (ICMJE). Objectifs : L’objectif principal de cette étude descriptive et transversale visait à recenser les instructions portant sur la paternité des articles et les intérêts concurrents provenant des recommandations aux auteurs des journaux traitant de pratique pharmaceutique. L’objectif secondaire visait à déterminer des mesures correctrices pour une paternité des articles plus transparente. Méthode : La recherche a débuté par l’identification des journaux traitant de pratique pharmaceutique. La consultation des instructions aux auteurs des journaux a permis ensuite de recenser les recommandations destinées à éviter les problèmes de paternité des articles et d’intérêts concurrents. Finalement, les membres de l’équipe de recherche se sont consultés afin de définir des mesures correctrices possibles à l’intention des chercheurs. Résultats : Des 232 journaux traitant de pharmacie, 33 ont été définis comme traitant de pratique pharmaceutique. Un total de 24 (73 %) journaux mentionnaient suivre la politique de l’ICMJE, 14 (42 %) demandaient aux auteurs de remplir un formulaire de déclaration d’intérêts concurrents au moment de la soumission de l’article, 17 (52 %) présentaient une définition de la qualité d’auteur et 5 (15 %) demandaient de détailler les contributions de chaque auteur. Une grille de 40 critères a été élaborée pour définir l’attribution du statut d’auteur. Conclusion : Moins de la moitié des journaux demandait aux auteurs de transmettre un formulaire de déclaration des intérêts concurrents au moment de la soumission d’un article et seulement la moitié des journaux avait donné une définition de la qualité d’auteur. La publication scientifique de travaux sur les pratiques pharmaceutiques n’est pas à l’abri des manques de transparence liés à la publication. L’utilisation d’une grille décrivant la contribution de chaque auteur et la publication en ligne des travaux peuvent contribuer à limiter ces risques. PMID:24970938

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

    PubMed Central

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

    2013-01-01

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

  14. CIEAEM 57 Italie Italy Foire aux ides, Session de Poster Piazza Armerina, Forum of Ideas, Poster Session

    E-print Network

    Spagnolo, Filippo

    CIEAEM 57 ­ Italie ­ Italy Foire aux idées, Session de Poster Piazza Armerina, Forum of Ideas, Poster Session July 23-29, 2005 Foire aux idées, Session de Poster Piazza Armerina, Forum of Ideas, Poster Session July 23-29, 2005

  15. CIEAEM 57 Italie Italy Foire aux ides, Session de Poster Piazza Armerina, Forum of Ideas, Poster Session

    E-print Network

    Spagnolo, Filippo

    CIEAEM 57 ­ Italie ­ Italy Foire aux idées, Session de Poster Piazza Armerina, Forum of Ideas, Poster Session July 23-29, 2005 ­ Italie ­ Italy Foire aux idées, Session de Poster Piazza Armerina, Forum of Ideas, Poster Session July 23

  16. CIEAEM 57 Italie Italy Foire aux ides, Session de Poster Piazza Armerina, Forum of Ideas, Poster Session

    E-print Network

    Spagnolo, Filippo

    CIEAEM 57 ­ Italie ­ Italy Foire aux idées, Session de Poster Piazza Armerina, Forum of Ideas, Poster Session July 23-29, 2005: Solution 2: #12;CIEAEM 57 ­ Italie ­ Italy Foire aux idées, Session de Poster Piazza Armerina, Forum

  17. EFFET KERR ET LECTROSTRICTION DANS DES VERRES AUX SILICATES DE PLOMB

    E-print Network

    Paris-Sud XI, Université de

    855 EFFET KERR ET ÉLECTROSTRICTION DANS DES VERRES AUX SILICATES DE PLOMB M. PAILLETTE LaboratoireHz) et haute fréquence (5MHz) d'une série de verres aux silicates de plomb et de la silice vitreuse ont été mesurées à 6 328 Å et à température ambiante. Hormis deux verres, l'écart entre ces valeurs

  18. RICHARD SIMON ET LES JUIFS DU 17E SICLE Les juifs prsents aux chrtiens

    E-print Network

    Paris-Sud XI, Université de

    1 RICHARD SIMON ET LES JUIFS DU 17E SIÈCLE «Les juifs présentés aux chrétiens» Paul PAUMIER Professeur agrégé de l'Université de Rouen (GRHIS) Colloque Richard Simon (Rouen, samedi 13 octobre 2012) Dans cette communication je vais m'intéresser aux relations entre Richard SIMON 1 et les Juifs de son

  19. Quelques proprietes topologiques des graphes et applications `a Internet et aux reseaux

    E-print Network

    Rapaport, Iván

    Quelques propri´et´es topologiques des graphes et applications `a Internet et aux r´eseaux Mauricio Diderot INRIA Paris Rocquencourt 2 d´ecembre 2011 Mauricio Soto Quelques propri´et´es topologiques des graphes et applications `a Internet et aux r´eseaux 1 / 53 #12;Arborescence des graphes Arborescence d

  20. LECTURE MULTI THEORIQUE DE LA PERIODE DE TRANSITION AUX NORMES IAS/IFRS

    E-print Network

    Boyer, Edmond

    LECTURE MULTI THEORIQUE DE LA PERIODE DE TRANSITION AUX NORMES IAS/IFRS : UNE ANALYSE LEXICALE DE : La première application des normes comptables internationales IAS/IFRS a suscité une communication la communication financière liée à la transition aux IAS/IFRS. Pour cela nous avons effectué une

  1. CHOIX D'OPTIONS COMPTABLES LORS DE LA TRANSITION AUX NORMES IAS/IFRS

    E-print Network

    Paris-Sud XI, Université de

    CHOIX D'OPTIONS COMPTABLES LORS DE LA TRANSITION AUX NORMES IAS/IFRS Samira DEMARIA et Dominique, intervenus lors de la transition aux normes comptables IAS/IFRS. Les apports de la Théorie Positive de la'hypothèses issues de la TPC. La méthode d'analyse statistique utilisée est la régression logistique. Mots clés : IAS/IFRS

  2. Publi dans Tiberghien, G. (1999). La psychologie cognitive survivra-t-elle aux sciences

    E-print Network

    Paris-Sud XI, Université de

    1999-01-01

    Publié dans Tiberghien, G. (1999). La psychologie cognitive survivra-t-elle aux sciences cognitives), 265-283. La psychologie cognitive survivra-t-elle aux sciences cognitives ? Guy Tiberghien Institut des Sciences Cognitives, Lyon · Bien que les sciences cognitives aient atteint en quelques décennies

  3. La fiscalit des fonds de pension aux Etats-Unis 1 Anne Lavigne

    E-print Network

    Paris-Sud XI, Université de

    1 La fiscalité des fonds de pension aux Etats-Unis 1 Anne Lavigne Laboratoire d'économie d'agit de décrire les dispositifs fiscaux applicables aux fonds de pension, que ces dispositifs concernent) for the workers who did not have access to firm-sponsored pension plans. In 1981, the Economic Recovery Tax Act

  4. ducation aux TIC, cultures informatique et du numrique : quelques repres historiques

    E-print Network

    Paris-Sud XI, Université de

    Éducation aux TIC, cultures informatique et du numérique : quelques repères historiques Béatrice aussi au coeur de l'informatique. Si l'éducation aux technologies de l'information et de la, la définir aujourd'hui demande aussi de mieux cerner l' « objet » informatique, en l'ancrant dans une

  5. Conséquences comportementales de la violence faite aux enfants

    PubMed Central

    Al Odhayani, Abdulaziz; Watson, William J.; Watson, Lindsay

    2013-01-01

    Résumé Objectif Discuter des répercussions de la violence sur le développement comportemental durant l’enfance, mettre en évidence certains signes comportementaux susceptibles d’alerter les médecins à la présence d’une maltraitance continue d’un enfant et explorer le rôle précis du médecin de famille dans une telle situation clinique. Sources des données Une recension systématique a servi à examiner la recherche pertinente, les articles de révision clinique et les sites web des organismes de protection de la jeunesse. Message principal Le comportement d’un enfant est une manifestation extériorisée de sa stabilité et de sa sécurité intérieures. C’est une lentille au travers de laquelle le médecin de famille peut observer le développement de l’enfant pendant toute sa vie. Tous les genres de violence sont dommageables pour les enfants, qu’elle soit physique, affective ou psychologique, et peuvent causer des problèmes à long terme dans le développement du comportement et de la santé mentale. Les médecins de famille doivent connaître les indices de maltraitance et de négligence envers les enfants et être aux aguets de ces derniers afin d’entreprendre les interventions appropriées et améliorer les résultats pour ces enfants. Conclusion La violence faite aux enfants peut causer un développement psychologique désordonné et des problèmes de comportement. Les médecins de famille exercent un rôle important dans la reconnaissance des signes comportementaux laissant présager une maltraitance, ainsi que pour offrir de l’aide afin de protéger les enfants.

  6. Ajustements nationaux de mcanismes prix face aux fluctuations du prix mondial : les leons du coton en Afrique Zone Franc

    E-print Network

    Paris-Sud XI, Université de

    Ajustements nationaux de mécanismes prix face aux fluctuations du prix mondial : les leçons du, à l'instauration d'un mécanisme de prix d'achat aux paysans intégrant l'adaptation aux fluctuations du prix mondial. Depuis 1985, la résurgence de baisses du prix mondial, de grande ampleur et à grande

  7. AUX/LAX genes encode a family of auxin influx transporters that perform distinct functions during Arabidopsis development.

    PubMed

    Péret, Benjamin; Swarup, Kamal; Ferguson, Alison; Seth, Malvika; Yang, Yaodong; Dhondt, Stijn; James, Nicholas; Casimiro, Ilda; Perry, Paula; Syed, Adnan; Yang, Haibing; Reemmer, Jesica; Venison, Edward; Howells, Caroline; Perez-Amador, Miguel A; Yun, Jeonga; Alonso, Jose; Beemster, Gerrit T S; Laplaze, Laurent; Murphy, Angus; Bennett, Malcolm J; Nielsen, Erik; Swarup, Ranjan

    2012-07-01

    Auxin transport, which is mediated by specialized influx and efflux carriers, plays a major role in many aspects of plant growth and development. AUXIN1 (AUX1) has been demonstrated to encode a high-affinity auxin influx carrier. In Arabidopsis thaliana, AUX1 belongs to a small multigene family comprising four highly conserved genes (i.e., AUX1 and LIKE AUX1 [LAX] genes LAX1, LAX2, and LAX3). We report that all four members of this AUX/LAX family display auxin uptake functions. Despite the conservation of their biochemical function, AUX1, LAX1, and LAX3 have been described to regulate distinct auxin-dependent developmental processes. Here, we report that LAX2 regulates vascular patterning in cotyledons. We also describe how regulatory and coding sequences of AUX/LAX genes have undergone subfunctionalization based on their distinct patterns of spatial expression and the inability of LAX sequences to rescue aux1 mutant phenotypes, respectively. Despite their high sequence similarity at the protein level, transgenic studies reveal that LAX proteins are not correctly targeted in the AUX1 expression domain. Domain swapping studies suggest that the N-terminal half of AUX1 is essential for correct LAX localization. We conclude that Arabidopsis AUX/LAX genes encode a family of auxin influx transporters that perform distinct developmental functions and have evolved distinct regulatory mechanisms. PMID:22773749

  8. Function of the aux and rol genes of the Ri plasmid in plant cell division in vitro.

    PubMed

    Nemoto, Keiichirou; Hara, Masamitsu; Suzuki, Masashi; Seki, Hikaru; Oka, Atsuhiro; Muranaka, Toshiya; Mano, Yoshihiro

    2009-12-01

    Auxin-autonomous growth in vitro may be related to the integration and expression of the aux and rol genes from the root-inducing (Ri) plasmid in plant cells infected by agropine-type Agrobacterium rhizogenes. To elucidate the functions of the aux and rol genes in plant cell division, plant cell lines transformed with the aux1 and aux2 genes or with the rolABCD genes were established using tobacco (Nicotiana tabacum) Bright Yellow-2 (BY-2) cells. The introduction of the aux1 and aux2 genes enabled the auxin-autonomous growth of BY-2 cells, but the introduction of the rolABCD genes did not affect the auxin requirement of the BY-2 cells. The results clearly show that the aux genes are necessary for auxinautotrophic cell division, and that the rolABCD genes are irrelevant in auxin autotrophy. PMID:20514230

  9. Function of the aux and rol genes of the Ri plasmid in plant cell division in vitro

    PubMed Central

    Nemoto, Keiichirou; Hara, Masamitsu; Suzuki, Masashi; Seki, Hikaru; Oka, Atsuhiro; Muranaka, Toshiya

    2009-01-01

    Auxin-autonomous growth in vitro may be related to the integration and expression of the aux and rol genes from the root-inducing (Ri) plasmid in plant cells infected by agropine-type Agrobacterium rhizogenes. To elucidate the functions of the aux and rol genes in plant cell division, plant cell lines transformed with the aux1 and aux2 genes or with the rolABCD genes were established using tobacco (Nicotiana tabacum) Bright Yellow-2 (BY-2) cells. The introduction of the aux1 and aux2 genes enabled the auxin-autonomous growth of BY-2 cells, but the introduction of the rolABCD genes did not affect the auxin requirement of the BY-2 cells. The results clearly show that the aux genes are necessary for auxinautotrophic cell division, and that the rolABCD genes are irrelevant in auxin autotrophy. PMID:20514230

  10. A Meta-Analytic Review of the Theories of Reasoned Action and Planned Behavior in Physical Activity: Predictive Validity and the Contribution of Additional Variables.

    ERIC Educational Resources Information Center

    Hagger, Martin S.; Chatzisarantis, Nikos L. D.; Biddle, Stuart J. H.

    2002-01-01

    Examined relations between behavior, intentions, attitudes, subjective norms, perceived behavioral control, self-efficacy, and past behaviors using the Theories of Reasoned Action (TRA) and Planned Behavior (TPB) in physical activity. This quantitative integration of the physical activity literature supported the major relationships of the…

  11. Outils d'acces aux donnees d'un PLC "Automate Web Access (AWA)"

    E-print Network

    Palluel, J; CERN. Geneva. AB Department

    2004-01-01

    Cette note presente un moniteur d'acces aux donnees d'un PLC Schneider ou Siemens, pouvant fonctionner sur n'importe quelle plateforme (Windows, Linux...) equipee d'un navigateur WEB sans telechargement de logiciel ("Applets").

  12. L'EUROPE CENTRALE AUX XVIIE-XIXE SICLES : REPRSENTATIONS ET ENJEUX AU XXE SICLE

    E-print Network

    Paris-Sud XI, Université de

    ------------------------------------------------------------------------------------- L'EUROPE Gradvohl (dir.), L'Europe médiane au XXe siècle. Fractures, décompositions ­ recompositions-80-86311-23-4 ------------------------------------------------------------------------------------- Pour citer cet article : François PERNOT, « L'Europe centrale aux XVIIe-XIXe siècles : représentations

  13. Protein-protein interaction and gene co-expression maps of ARFs and Aux/IAAs in Arabidopsis.

    PubMed

    Piya, Sarbottam; Shrestha, Sandesh K; Binder, Brad; Stewart, C Neal; Hewezi, Tarek

    2014-01-01

    The phytohormone auxin regulates nearly all aspects of plant growth and development. Based on the current model in Arabidopsis thaliana, Auxin/indole-3-acetic acid (Aux/IAA) proteins repress auxin-inducible genes by inhibiting auxin response transcription factors (ARFs). Experimental evidence suggests that heterodimerization between Aux/IAA and ARF proteins are related to their unique biological functions. The objective of this study was to generate the Aux/IAA-ARF protein-protein interaction map using full length sequences and locate the interacting protein pairs to specific gene co-expression networks in order to define tissue-specific responses of the Aux/IAA-ARF interactome. Pairwise interactions between 19 ARFs and 29 Aux/IAAs resulted in the identification of 213 specific interactions of which 79 interactions were previously unknown. The incorporation of co-expression profiles with protein-protein interaction data revealed a strong correlation of gene co-expression for 70% of the ARF-Aux/IAA interacting pairs in at least one tissue/organ, indicative of the biological significance of these interactions. Importantly, ARF4-8 and 19, which were found to interact with almost all Aux-Aux/IAA showed broad co-expression relationships with Aux/IAA genes, thus, formed the central hubs of the co-expression network. Our analyses provide new insights into the biological significance of ARF-Aux/IAA associations in the morphogenesis and development of various plant tissues and organs. PMID:25566309

  14. Le succès des cultures transgéniques aux États-Unis: facteurs agro-économiques et perspectives

    Microsoft Academic Search

    Sylvie Bonny

    2002-01-01

    [fre] A partir du cas du soja tolérant à l'herbicide gly- phosate, l'article analyse un certain nombre de facteurs expliquant la progression rapide des cultures transgéniques aux USA. Après avoir passé en revue leurs surfaces dans le monde et aux USA, on examine divers facteurs agro-économiques à l'origine de la diffusion rapide du soja tolérant au glyphosate dans les exploitations

  15. 8, 91399165, 2008 Contributions to

    E-print Network

    Paris-Sud XI, Université de

    , China Meteorological Administration, Beijing, China 2 Institute of Urban Meteorology, China.0 License. Atmospheric Chemistry and Physics Discussions Contributions of pollutants from North China Plain Meteorological Administration, Beijing, China Received: 29 February 2008 ­ Accepted: 1 April 2008 ­ Published: 21

  16. Naive Students' Conceptual Development and Beliefs: The Need for Multiple Analyses to Determine What Contributes to Student Success in a University Introductory Physics Course

    ERIC Educational Resources Information Center

    Chu, Hye-Eun; Treagust, David F.; Chandrasegaran, A. L.

    2008-01-01

    This research involved naive physics learners who were interested in majoring in science or engineering. In a semester-long quasi-experimental study, open-ended pretests and weekly interviews were used to analyse the progressive development of students' conceptions relating to sound and wave motion. Semi-structured interviews were also conducted…

  17. Thinking Differently about Curriculum: Analysing the Potential Contribution of Physical Education as Part of "Health and Wellbeing" during a Time of Revised Curriculum Ambitions in Scotland

    ERIC Educational Resources Information Center

    Thorburn, Malcolm; Jess, Mike; Atencio, Matthew

    2011-01-01

    Purpose: Following an explanation of the current policy context the paper addresses three particularly pressing challenges: the curriculum focus for physical education as part of health and wellbeing; the major implications for subject knowledge; and how translating curriculum change into professional learning and practice might feasibly occur. In…

  18. Comparison of three parameterizations of subgrid-scale feedback physics for sea spray contributions to near-surface heat fluxes in hurricanes

    Microsoft Academic Search

    C. Fairall; J. Bao; S. Deszoeke

    2007-01-01

    Air-sea interaction is unquestionably a critical aspect of hurricane structure and evolution. Recent experiments with high resolution (km-scale) nested models have shown strong sensitivity to the representation of air sea fluxes - both the direct (interfacial) transfers and contributions of sea spray. With the advent of fully coupled (air-wave-ocean) models, it becomes possible to represent the surface fluxes in more

  19. Empirical contributions

    Microsoft Academic Search

    Steven James Linton; Anna-Lisa Hellsing; Ing-Liss Bryngelsson

    2000-01-01

    We investigated the association between psychological factors, physical function, and moderate levels of spinal pain. Participants\\u000a were 720 people selected from a general population survey with either No Pain (n = 449) or Moderate Pain (n = 271). The Moderate Pain group reported an average intensity of 4.7 (on a 0 to 10 scale), no health care visits, and only

  20. Humans, Intentionality, Experience And Tools For Learning: Some Contributions From Post-cognitive Theories To The Use Of Technology In Physics Education

    NASA Astrophysics Data System (ADS)

    Bernhard, Jonte

    2007-11-01

    Human cognition cannot be properly understood if we do not take the use of tools into account. The English word cognition stems from the Latin "cognoscere," meaning "to become acquainted with" or "to come to know." Following the original Latin meaning we should not only study "what happens in the head" if we want to study cognition. Experientially based perspectives, such as pragmatism, phenomenology, phenomenography, and activity theory, stress that we should study person-world relationships. Technologies actively shape the character of human-world relationships. An emergent understanding in modern cognitive research is the co-evolution of the human brain and human use of tools and the active character of perception. Thus, I argue that we must analyze the role of technologies in physics education in order to realize their full potential as tools for learning, and I will provide selected examples from physics learning environments to support this assertion.

  1. Evidence supporting an intentional Neandertal burial at La Chapelle-aux-Saints

    PubMed Central

    Rendu, William; Beauval, Cédric; Crevecoeur, Isabelle; Bayle, Priscilla; Balzeau, Antoine; Bismuth, Thierry; Bourguignon, Laurence; Delfour, Géraldine; Faivre, Jean-Philippe; Lacrampe-Cuyaubère, François; Tavormina, Carlotta; Todisco, Dominique; Turq, Alain; Maureille, Bruno

    2014-01-01

    The bouffia Bonneval at La Chapelle-aux-Saints is well known for the discovery of the first secure Neandertal burial in the early 20th century. However, the intentionality of the burial remains an issue of some debate. Here, we present the results of a 12-y fieldwork project, along with a taphonomic analysis of the human remains, designed to assess the funerary context of the La Chapelle-aux-Saints Neandertal. We have established the anthropogenic nature of the burial pit and underlined the taphonomic evidence of a rapid burial of the body. These multiple lines of evidence support the hypothesis of an intentional burial. Finally, the discovery of skeletal elements belonging to the original La Chapelle aux Saints 1 individual, two additional young individuals, and a second adult in the bouffia Bonneval highlights a more complex site-formation history than previously proposed. PMID:24344286

  2. Sections efficaces absolues de l'ozone 298 K aux longueurs d'onde de la lampe au mercure

    E-print Network

    Boyer, Edmond

    for the absorption cross- sections of ozone at the mercury lamp wavelengths, specially for the calibrationL-105 Sections efficaces absolues de l'ozone à 298 K aux longueurs d'onde de la lampe au mercure'importance que présente la connaissance des sections efficaces de l'ozone aux longueurs d'onde de la lampe au

  3. Analyse texturale de l'criture Arabe multifonte de Gabor aux contourlets Analyse texturale de l'criture Arabe multifonte

    E-print Network

    Paris-Sud XI, Université de

    Analyse texturale de l'écriture Arabe multifonte de Gabor aux contourlets Analyse texturale de l'écriture Arabe multifonte de Gabor aux Contourlets Nadia Ben Amor1 ­ Najoua Essoukri Ben Amara2 1 Ecole Nationale.benamara@eniso.rnu.tn Résumé : La reconnaissance automatique de l'écriture Arabe reste encore un domaine intéressant d

  4. Principes fondamentaux de la nouvelle politique slave Appel aux peuples slaves par un patriote russe (et variantes)

    E-print Network

    Paris-Sud XI, Université de

    Annexes : Principes fondamentaux de la nouvelle politique slave Appel aux peuples slaves par un patriote russe (et variantes) Appel aux Slaves par un patriote russe La situation en Russie Ma défense halshs-00394269,version1-12May2010 #12;[1] Principes fondamentaux de la nouvelle politique slave1 Après

  5. Les choix d'options comptables lors de la transition aux normes IAS/IFRS : quel rle pour la prudence ?

    E-print Network

    Paris-Sud XI, Université de

    1 Les choix d'options comptables lors de la transition aux normes IAS/IFRS : quel rôle pour la comptables, des groupes du SBF 120, intervenus lors de la transition aux normes comptables IAS/IFRS. Les la régression logistique. Mots clés : IAS/IFRS, Transition, Choix d'options comptables, Théorie

  6. Contribution of streetscape audits to explanation of physical activity in four age groups based on the Microscale Audit of Pedestrian Streetscapes (MAPS).

    PubMed

    Cain, Kelli L; Millstein, Rachel A; Sallis, James F; Conway, Terry L; Gavand, Kavita A; Frank, Lawrence D; Saelens, Brian E; Geremia, Carrie M; Chapman, James; Adams, Marc A; Glanz, Karen; King, Abby C

    2014-09-01

    Ecological models of physical activity emphasize the effects of environmental influences. "Microscale" streetscape features that may affect pedestrian experience have received less research attention than macroscale walkability (e.g., residential density). The Microscale Audit of Pedestrian Streetscapes (MAPS) measures street design, transit stops, sidewalk qualities, street crossing amenities, and features impacting aesthetics. The present study examined associations of microscale attributes with multiple physical activity (PA) measures across four age groups. Areas in the San Diego, Seattle, and the Baltimore metropolitan areas, USA, were selected that varied on macro-level walkability and neighborhood income. Participants (n = 3677) represented four age groups (children, adolescents, adults, older adults). MAPS audits were conducted along a 0.25 mile route along the street network from participant residences toward the nearest non-residential destination. MAPS data were collected in 2009-2010. Subscale and overall summary scores were created. Walking/biking for transportation and leisure/neighborhood PA were measured with age-appropriate surveys. Objective PA was measured with accelerometers. Mixed linear regression analyses were adjusted for macro-level walkability. Across all age groups 51.2%, 22.1%, and 15.7% of all MAPS scores were significantly associated with walking/biking for transport, leisure/neighborhood PA, and objectively-measured PA, respectively. Supporting the ecological model principle of behavioral specificity, destinations and land use, streetscape, street segment, and intersection variables were more related to transport walking/biking, while aesthetic variables were related to leisure/neighborhood PA. The overall score was related to objective PA in children and older adults. Present findings provide strong evidence that microscale environment attributes are related to PA across the lifespan. Improving microscale features may be a feasible approach to creating activity-friendly environments. PMID:24983701

  7. Uracil DNA Glycosylase BKRF3 Contributes to Epstein-Barr Virus DNA Replication through Physical Interactions with Proteins in Viral DNA Replication Complex

    PubMed Central

    Su, Mei-Tzu; Liu, I-Hua; Wu, Chia-Wei; Chang, Shu-Ming; Tsai, Ching-Hwa; Yang, Pei-Wen; Chuang, Yu-Chia; Lee, Chung-Pei

    2014-01-01

    ABSTRACT Epstein-Barr virus (EBV) BKRF3 shares sequence homology with members of the uracil-N-glycosylase (UNG) protein family and has DNA glycosylase activity. Here, we explored how BKRF3 participates in the DNA replication complex and contributes to viral DNA replication. Exogenously expressed Flag-BKRF3 was distributed mostly in the cytoplasm, whereas BKRF3 was translocated into the nucleus and colocalized with the EBV DNA polymerase BALF5 in the replication compartment during EBV lytic replication. The expression level of BKRF3 increased gradually during viral replication, coupled with a decrease of cellular UNG2, suggesting BKRF3 enzyme activity compensates for UNG2 and ensures the fidelity of viral DNA replication. In immunoprecipitation-Western blotting, BKRF3 was coimmunoprecipitated with BALF5, the polymerase processivity factor BMRF1, and the immediate-early transactivator Rta. Coexpression of BMRF1 appeared to facilitate the nuclear targeting of BKRF3 in immunofluorescence staining. Residues 164 to 255 of BKRF3 were required for interaction with Rta and BALF5, whereas residues 81 to 166 of BKRF3 were critical for BMRF1 interaction in glutathione S-transferase (GST) pulldown experiments. Viral DNA replication was defective in cells harboring BKRF3 knockout EBV bacmids. In complementation assays, the catalytic mutant BKRF3(Q90L,D91N) restored viral DNA replication, whereas the leucine loop mutant BKRF3(H213L) only partially rescued viral DNA replication, coupled with a reduced ability to interact with the viral DNA polymerase and Rta. Our data suggest that BKRF3 plays a critical role in viral DNA synthesis predominantly through its interactions with viral proteins in the DNA replication compartment, while its enzymatic activity may be supplementary for uracil DNA glycosylase (UDG) function during virus replication. IMPORTANCE Catalytic activities of both cellular UDG UNG2 and viral UDGs contribute to herpesviral DNA replication. To ensure that the enzyme activity executes at the right time and the right place in DNA replication forks, complex formation with other components in the DNA replication machinery provides an important regulation for UDG function. In this study, we provide the mechanism for EBV UDG BKRF3 nuclear targeting and the interacting domains of BKRF3 with viral DNA replication proteins. Through knockout and complementation approaches, we further demonstrate that in addition to UDG activity, the interaction of BKRF3 with viral proteins in the replication compartment is crucial for efficient viral DNA replication. PMID:24872582

  8. Mmoire prsent dans le cadre du chantier sur l'aide financire aux

    E-print Network

    Charette, André

    l'enseignement supérieur au Québec, notre population étudiante est en effet devenue de plus en plus'améliorer plus globalement le fonctionnement de l'AFE. Enfin, dans une troisième section, nous aborderons les'accessibilité financière aux études. Bien qu'un peu plus éloigné du mandat de 1 Ministère de l'enseignement supérieur, de

  9. Systmes de raction-diffusion et HPC: application aux Thierry Dumont1, Violaine Louvet1

    E-print Network

    Louvet, Violaine

    Systèmes de réaction-diffusion et HPC: application aux AVC Thierry Dumont1, Violaine Louvet1. Louvet Systèmes de RD et HPC Séminaire Rouen 1 / 45 #12;1 Contexte et enjeux sociétaux 2 Modélisation de Conclusions et perspectives V. Louvet Systèmes de RD et HPC Séminaire Rouen 2 / 45 #12;Contexte et enjeux

  10. Liaison spcifique du cortisol aux protines plasmatiques chez le Cobaye, de la naissance au sevrage

    E-print Network

    Boyer, Edmond

    Liaison spécifique du cortisol aux protéines plasmatiques chez le Cobaye, de la naissance au Aubière, France. Summary. Specific binding of cortisol to plasma protein in the guinea-pig from birth : - the concentration of plasma cortisol by competitive binding to protein ; - the association constant, Ka, and total

  11. Modelisation des Co-Expositions aux Pesticides : une Approche Bayesienne Nonparametrique

    E-print Network

    Paris-Sud XI, Université de

    Modelisation des Co-Expositions aux Pesticides : une Approche Bay´esienne Nonparam´etrique Am analysis framework. The goal is to determine mixture of pesticides residues which are simultaneously of pesticides is assessed from the available consumption data and contamination analyses. We propose to model

  12. PROBLMES POSS POUR L'APPLICATION DES ALLIAGES DE NIOBIUM AUX AUBES DE TURBINE

    E-print Network

    Boyer, Edmond

    513 PROBLÈMES POSÉS POUR L'APPLICATION DES ALLIAGES DE NIOBIUM AUX AUBES DE TURBINE par G. GAUJE et R. BRUNETAUD Direction Technique de la SNECMA Résumé. 2014 L'emploi d'alliages de niobium à la place of niobium alloys instead of the current alloys with nickel or cobalt as parent metal for manufacturing

  13. Aide aux dplacements l'tranger des enseignants-chercheurs de l'Universit du Maine

    E-print Network

    Di Girolami, Cristina

    Aide aux déplacements à l'étranger des enseignants-chercheurs de l'Université du Maine retour'Université du Maine Le Service Recherche et le Service des Relations Internationales ont mis en place un-chercheurs, chercheurs et doctorants des laboratoires de l'Université du Maine. Il s'agit d'une aide strictement soumise

  14. SIMULATION DE L'VOLUTION DU CLIMAT AUX CHELLES GLOBALES ET RGIONALES

    E-print Network

    Boyer, Edmond

    SIMULATION DE L'ÉVOLUTION DU CLIMAT AUX ÉCHELLES GLOBALES ET RÉGIONALES Climate change at global exercice coordonné de simulation de l'évolution du climat au cours du 20e et du 21e siècle. Nous Panel on Climate Change (IPCC) that should appear in early 2007, modelling groups worldwide have

  15. Graphisme tactile appliqu aux illustrations de manuels scolaires l'usage d'enfants

    E-print Network

    Hayward, Vincent

    Graphisme tactile appliqué aux illustrations de manuels scolaires à l'usage d'enfants ayant une illustrations de manuels scolaires. Le logiciel MaskGen a été développé afin de transformer interactivement ces illustrations en graphiques tactiles. Une méthodologie a été développée pour transposer ces graphiques et les

  16. Simulation et prvision de la qualit de l'air aux chelles continentale et rgionale.

    E-print Network

    Ribes, Aurélien

    Simulation et prévision de la qualité de l'air aux échelles continentale et régionale. Anne Dufour ............ Episode de pollution à l'ozone en PACA 14 au 17 juillet 2006 Observations BASTER et Prévisions MOCAGE 40 problproblproblproblèèèèmemememe local etlocal etlocal etlocal et planplanplanplanéééétairetairetairetaire Episode de pollution à

  17. LE RECOURS CROISSANT AUX EVALUATEURS EXTERNES DANS LE CADRE DES NORMES IFRS : CONSEQUENCES POURL'AUDITEUR

    E-print Network

    Paris-Sud XI, Université de

    1 LE RECOURS CROISSANT AUX EVALUATEURS EXTERNES DANS LE CADRE DES NORMES IFRS : CONSEQUENCES POURL des normes IFRS pour les grands groupes cotés français, a provoqué l'apparition d'un nouvel acteur : l : auditeurs, évaluateurs externes, indépendance, allocation du coût d'acquisition, normes IFRS. Abstract

  18. Financiarisation, Evaluation et Information Comptable : De la cration de valeur aux IFRS

    E-print Network

    Paris-Sud XI, Université de

    1 Financiarisation, Evaluation et Information Comptable : De la création de valeur aux IFRS Journée IFRS Keywords : Financialization, shareholders value creation, EVA, IFRS standards Les règles normes IFRS fondées sur la valorisation des actifs à la valeur de marché. Une telle cohérence peut être

  19. Initiation aux applications de l'acupuncture en obsttrique 24 -25 novembre 2011

    E-print Network

    Brest, Université de

    Initiation aux applications de l'acupuncture en obstétrique 24 - 25 novembre 2011 Public concerné acupuncteurs Objectifs · Comprendre les principes essentiels de l'acupuncture appliquée à l'obstétrique · Connaître les effets antalgiques de l'acupuncture lors de l'accouchement mais aussi ses effets sur le col

  20. Journe de perfectionnement aux applications de l'acupuncture en obsttrique

    E-print Network

    Brest, Université de

    Journée de perfectionnement aux applications de l'acupuncture en obstétrique 1er décembre 2011 omnipraticiens acupuncteurs Objectifs : Préciser les bases essentielles des techniques d'acupuncture adaptées à l'obstétrique Préciser les meilleures indications de l'acupuncture en obstétrique Apporter une base rationnelle à l

  1. L'apport d'internet aux Petites Entreprises (PE) touristiques dans la construction de leur

    E-print Network

    Paris-Sud XI, Université de

    RIPME L'apport d'internet aux Petites Entreprises (PE) touristiques dans la construction de leur Entreprises (PE) touristiques dans la construction de leur positionnement stratégique : le cas des hébergeurs les PE demeure faible (Eurostat 2010) et pourtant parmi les ap- plications IT, internet est pour les

  2. Le passage aux Normes internationales : de nouvelles options pour la gestion du résultat ?

    Microsoft Academic Search

    Karim Kharrat

    2006-01-01

    Les sociétés européenne cotées ont dû adopter au premier janvier 2005 toutes les Normes et interprétations de l'IASB (Normes IAS \\/ IFRS ). Le passage à ces Normes offre aux entreprises plusieurs options comptables et maintient une large part d'interprétation. Ces options et estimations se sont manifestées soit pour les besoins de la transition (retraitement ou non des acquisitions antérieures,

  3. Effet Mssbauer et techniques complmentaires : L'EXAFS appliqu aux dterminations structurales de milieux

    E-print Network

    Paris-Sud XI, Université de

    1079- Effet Mössbauer et techniques complémentaires : III. 2014 L'EXAFS appliqué aux déterminations synchrotron, l'EXAFS devient une technique de plus en plus utilisée pour l'étude de l'ordre local dans les système complexe, l'EXAFS peut donner l'ordre local autour de chacun des constituants. Cependant, l

  4. Frottement interne dans le zirconium irradie aux neutrons A 77 K

    Microsoft Academic Search

    R. Pichon; E. Bisognis; P. Mosek

    1973-01-01

    Le zirconium présente après irradiation neutronique à 77 K sept pics de frottement interne. Les deux premiers correspondent à la réorientation complexe de ?interstitiel libre migrant à trois dimensions en fin de stade I. Le dipole élastique créé par cet interstitiel est monoclinique et sa réorientation complexe donne lieu à un pic dissocié conforme aux prévisions de Nowick. Ce défaut

  5. La privatisation en Pologne : d'une approche plurielle aux difficultés de la privatisation de masse

    Microsoft Academic Search

    Jean-François Nivet

    1994-01-01

    [fre] La privatisation en Pologne : d'une approche plurielle aux difficultés de la privatisation de masse . La part du secteur privé dans le PIB polonais a franchi depuis 1 993 le seuil des 50 %. Cette progression provient en premier lieu du dynamisme de l'initiative privée qui s'est manifestée par la création ex nihilo de nouvelles entreprises. Le succès

  6. La dama boba de Lope de Vega adapte aux enfants Florence RAYNI

    E-print Network

    Paris-Sud XI, Université de

    1 « La dama boba de Lope de Vega adaptée aux enfants » Florence RAYNIÉ Université de Toulouse II-Le Mirail La dama boba, l'une des comedias les plus connues et les plus représentées de Lope de Vega a été Vega. Cette adaptation, publiée dans la collection Araluce Las obras maestras al alcance de los niños

  7. L'ethnologue face aux racismes : l'exemple tsigane** Patrick Williams*

    E-print Network

    Paris-Sud XI, Université de

    L'ethnologue face aux racismes : l'exemple tsigane** Patrick Williams* Ayant fait depuis des majoritaire. The ethnologist and racisms : the example of gipsies Victims of exclusion for centuries, gipsy française, 1988/2 (Ethnologie et racismes, ss la dir. Jacques Gutwirth et Jean-Claude Schmitt), pp. 173

  8. Coring Performance to Characterise the Geology in the ``Cran aux Iguanodons'' of Bernissart (Belgium)

    Microsoft Academic Search

    Jean-Pierre Tshibangu; Fabrice Dagrain; Hughes Legrain; Benoît Deschamps

    2004-01-01

    The Cran aux iguanodons of Bernissart is a sinkhole (or chimney caving) with a valuable paleontological deposit due to the exceptional quantity and diversity of fossils found during the excavation conducted from 1878 to 1881. In fact, bones have been discovered in a clayey geological formation when digging à mine gallery at the -322 m level. A subsequent extraction gave

  9. DPARTEMENT DE PHYSIQUE Politique de financement des tudiants aux cycles suprieurs,

    E-print Network

    Parrott, Lael

    DÉPARTEMENT DE PHYSIQUE Politique de financement des étudiants aux cycles supérieurs, adoptée par l étudiants et étudiantes des cycles supérieurs du département de physique; toute dérogation nécessite une physique : bourses d'admission de 10 000 $ par année pour un an à la maîtrise (deux ans pour la maîtrise en

  10. Dpartement*de*physique**Universit*de*Montral* Plan*d'tudes*aux*cycles*suprieurs*

    E-print Network

    Parrott, Lael

    1" " Département*de*physique*­*Université*de*Montréal* Plan*d'études*aux*cycles*supérieurs* * L*d'étude* Maîtrise"en"physique" Avec"mémoire" Avec"stage" Doctorat"en"physique"" Régulier" Passage"et"durée":" ___________________________________________" Complément"du"directeur"de"recherche":" _________________________" Bourse"du"Département"de"physique

  11. Reflets de la Physique n414 Pour donner une meilleure visibilit aux femmes physiciennes,

    E-print Network

    van Tiggelen, Bart

    Reflets de la Physique n°414 Pour donner une meilleure visibilité aux femmes physiciennes, la Commission Femmes & Physique de la SFP a proposé à la rédaction de Reflets de la physique de publier un, puis vivement soutenue au CNRS par la Mission pour la place des femmes et par l'Institut de physique

  12. Dpartement d'informatique -Facult des sciences Activits offertes aux tudes suprieures

    E-print Network

    Spino, Claude

    Département d'informatique - Faculté des sciences Activités offertes aux études supérieures 2013-2014 AUTOMNE 2013 Sigle Titre Gr Prof(s) Horaire Local IFT703 Informatique cognitive 1-51 Pigot, Hélène LU 1430 2014 Sigle Titre Gr Prof(s) Horaire Local IFT821 Méthodologie de communication en informatique51 IGL821

  13. Objectifs de la formation Former des professionnels de l'informatique aux nouvelles

    E-print Network

    Chaine, Raphaëlle

    Objectifs de la formation Former des professionnels de l'informatique aux nouvelles technologies de'infrastructures ou consultant. Master Professionnel GE Informatique EN APPRENTISSA Conditions d'accès Être titulaire d'un Master 1ère année informatique ou de formation équivalente (Bac+4) Avoir moins de 26 ans

  14. Rencontres halieutiques -Rsum Session 1 -La pche et l'aquaculture face aux enjeux

    E-print Network

    Paris-Sud XI, Université de

    Rencontres halieutiques - Résumé Session 1 - La pêche et l'aquaculture face aux enjeux du écosystèmes (ESE), AGROCAMPUS OUEST Pêche et aquaculture : les enjeux environnementaux Le secteur des pêches et de l'aquaculture est aujourd'hui un secteur en pleine mutation. L'enjeu est de placer ces

  15. L'INDEPENDANCE DU COMMISSAIRE AUX COMPTES : UNE ANALYSE EMPIRIQUE BASEE

    E-print Network

    Boyer, Edmond

    de contrôle ­ Niveau de croyance dans un monde juste. Abstract Three psychological components of auditor behaviour confronted with an audit conflict situation have been studied. The most independent'indépendance correspond à la capacité de résistance de l'auditeur aux pressions des dirigeants de l'entreprise (Watts et

  16. Adiabatic and nonadiabatic contributions to the energy of a system subject to a time-dependent perturbation: complete separation and physical interpretation.

    PubMed

    Mandal, Anirban; Hunt, Katharine L C

    2012-10-28

    When a time-dependent perturbation acts on a quantum system that is initially in the nondegenerate ground state ?0> of an unperturbed Hamiltonian H(0), the wave function acquires excited-state components ?k> with coefficients c(k)(t) exp(-iE(k)t/?), where E(k) denotes the energy of the unperturbed state ?k>. It is well known that each coefficient c(k)(t) separates into an adiabatic term a(k)(t) that reflects the adjustment of the ground state to the perturbation--without actual transitions--and a nonadiabatic term b(k)(t) that yields the probability amplitude for a transition to the excited state. In this work, we prove that the energy at any time t also separates completely into adiabatic and nonadiabatic components, after accounting for the secular and normalization terms that appear in the solution of the time-dependent Schro?dinger equation via Dirac's method of variation of constants. This result is derived explicitly through third order in the perturbation. We prove that the cross-terms between the adiabatic and nonadiabatic parts of c(k)(t) vanish, when the energy at time t is determined as an expectation value. The adiabatic term in the energy is identical to the total energy obtained from static perturbation theory, for a system exposed to the instantaneous perturbation ?H'(t). The nonadiabatic term is a sum over excited states ?k> of the transition probability multiplied by the transition energy. By evaluating the probabilities of transition to the excited eigenstates ?k'(t)> of the instantaneous Hamiltonian H(t), we provide a physically transparent explanation of the result for E(t). To lowest order in the perturbation parameter ?, the probability of finding the system in state ?k'(t)> is given by ?(2) ?b(k)(t)?(2). At third order, the transition probability depends on a second-order transition coefficient, derived in this work. We indicate expected differences between the results for transition probabilities obtained from this work and from Fermi's golden rule. PMID:23126697

  17. Adiabatic and nonadiabatic contributions to the energy of a system subject to a time-dependent perturbation: Complete separation and physical interpretation

    NASA Astrophysics Data System (ADS)

    Mandal, Anirban; Hunt, Katharine L. C.

    2012-10-01

    When a time-dependent perturbation acts on a quantum system that is initially in the nondegenerate ground state |0? of an unperturbed Hamiltonian H0, the wave function acquires excited-state components |k? with coefficients ck(t) exp(-iEkt/?), where Ek denotes the energy of the unperturbed state |k?. It is well known that each coefficient ck(t) separates into an adiabatic term ak(t) that reflects the adjustment of the ground state to the perturbation - without actual transitions - and a nonadiabatic term bk(t) that yields the probability amplitude for a transition to the excited state. In this work, we prove that the energy at any time t also separates completely into adiabatic and nonadiabatic components, after accounting for the secular and normalization terms that appear in the solution of the time-dependent Schrödinger equation via Dirac's method of variation of constants. This result is derived explicitly through third order in the perturbation. We prove that the cross-terms between the adiabatic and nonadiabatic parts of ck(t) vanish, when the energy at time t is determined as an expectation value. The adiabatic term in the energy is identical to the total energy obtained from static perturbation theory, for a system exposed to the instantaneous perturbation ?H'(t). The nonadiabatic term is a sum over excited states |k? of the transition probability multiplied by the transition energy. By evaluating the probabilities of transition to the excited eigenstates |k'(t)? of the instantaneous Hamiltonian H(t), we provide a physically transparent explanation of the result for E(t). To lowest order in the perturbation parameter ?, the probability of finding the system in state |k'(t)? is given by ?2 |bk(t)|2. At third order, the transition probability depends on a second-order transition coefficient, derived in this work. We indicate expected differences between the results for transition probabilities obtained from this work and from Fermi's golden rule.

  18. CIEAEM 57 Italie Italy Foire aux ides, Session de Poster Piazza Armerina, Forum of Ideas, Poster Session

    E-print Network

    Spagnolo, Filippo

    CIEAEM 57 ­ Italie ­ Italy Foire aux idées, Session de Poster Piazza Armerina, Forum of Ideas, Poster Session July 23-29, 2005, Session de Poster Piazza Armerina, Forum of Ideas, Poster Session July 23-29, 2005

  19. CIEAEM 57 Italie Italy Foire aux ides, Session de Poster Piazza Armerina, Forum of Ideas, Poster Session

    E-print Network

    Spagnolo, Filippo

    CIEAEM 57 ­ Italie ­ Italy Foire aux idées, Session de Poster Piazza Armerina, Forum of Ideas, Poster Session July 23-29, 2005 with his education. In this poster, we study the students' personal school-routes as a variable

  20. CENTRE DE RADAPATION LUCIE-BRUNEAU Le Centre de radaptation Lucie-Bruneau offre aux personnes ayant une dficience

    E-print Network

    Parrott, Lael

    neuropsychologue évalue les fonctions cognitives de la clientèle, puisque pour s'adapter, il faut intégrer de'interventions de nature cognitive et en faisant équipe avec l'usager qui est souvent aux prises avec des troubles

  1. MISB40Y -Series chronologiques Feuille d'exercices n1 : Introduction aux series chronologiques

    E-print Network

    Lagnoux, Agnès

    M1 ISMAG MISB40Y - S´eries chronologiques Feuille d'exercices n°1 : Introduction aux s´eries´ethodes. 2 #12;M1 ISMAG MISB40Y - S´eries chronologiques Feuille d'exercices n°2 : Moyennes mobiles et d chronologique (avec p´eriodes superpos´ees puis avec p´eriodes successives). Commenter. 2. Calculer la s´erie

  2. Synthesis, self-assembly, and magnetic properties of [FePt]1-xAux nanoparticles

    Microsoft Academic Search

    Shishou Kang; Zhiyong Jia; David E. Nikles; J. W. Harrell

    2003-01-01

    [FePt]1-xAux nanoparticles were prepared by the simultaneous polyol reduction of platinum acetylacetonate and gold acetate and the thermal decomposition of iron pentacarbonyl, giving 3.5-nm-diameter FePt particles with gold atoms substituted in the lattices. The addition of gold promoted the face-centered cubic to tetragonal phase transition, thereby reducing the temperature required for this transition by more than 150°C compared with FePt

  3. Actualit scientifiqueActualit scientifique L'ADN : de la biologie aux

    E-print Network

    Ingrand, François

    Actualité scientifiqueActualité scientifique L'ADN : de la biologie aux technologies, un nouveau efforts pour séquencer l'ADN à travers un nanopore ou, plus récemment, par manipulation mécanique. Si l ont permis de mettre au point une filière industrielle de synthèse d'ADN,des méthodes de modifi

  4. Auxin-responsive grape Aux/IAA9 regulates transgenic Arabidopsis plant growth.

    PubMed

    Fujita, Keiko; Horiuchi, Haruka; Takato, Haruka; Kohno, Minako; Suzuki, Shunji

    2012-07-01

    We report the characterization of VvIAA9, an auxin/indole-3-acetic acid (Aux/IAA) protein, in grapevine (Vitis vinifera L.). VvIAA9 was expressed abundantly in leaves and berries. VvIAA9 transcription was drastically upregulated from anthesis to onset of ripening (termed véraison), in which berry diameter rapidly increased. Treatment with exogenous IAA induced VvIAA9 expression in grape leaves, suggesting that VvIAA9 is an auxin-responsive Aux/IAA protein. The overexpression of VvIAA9 in Arabidopsis thaliana promoted plant growth, including rapid floral transition. However, no morphological differences were observed between the control plant and the VvIAA9-overexpressing plant. The overexpression of VvIAA9 in Arabidopsis plants rendered the plants hyposensitive to exogenous IAA. The exogenous IAA treatment did not induce VvIAA9-overexpressing Arabidopsis plant growth and expression of IAA-responsive HAT2. Taken together, we conclude that grape Aux/IAA9 protein is likely to play a crucial role as a plant growth regulator. PMID:22535320

  5. JOURNAL DE PHYSIQUE Colloque C4, supplkment au no 5, tome 35, Mai 1974,page C4-213 CONTRIBUTION OF GIANT SPIN CLUSTERS TO

    E-print Network

    Paris-Sud XI, Université de

    : APPLICATION TO Ni-Cu (*) K. LEVIN and D. L. MILLS Physics Department, University of California, Irvine des neutrons, et la chaleur specifique. Nous croyons que ce modble s'applique aux alliages de Ni-Cu temperaturesdans les alliages Ni-Cu, pour des concentrations et des temperatures voisines des conditions critiques

  6. Approche aux soins en milieu communautaire à des adultes ayant une déficience développementale

    PubMed Central

    Osmun, W.E.; Chan, Nelson; Solomon, Robert

    2015-01-01

    Résumé Objectif Passer en revue les obligations d’ordre médical, éthique et juridique dans les soins aux adultes ayant une déficience développementale (DD) qui vivent dans la communauté. Sources des données Des recherches ont été faites dans Google et MEDLINE à l’aide des mots disabled, disability, vulnerable et community. Les lois pertinentes ont fait l’objet d’un examen. Message principal Le traitement d’un patient ayant une DD varie en fonction de facteurs comme la pathogenèse du problème actuel du patient, ses affections concomitantes, la gravité de ses déficiences et ses soutiens sociaux habituels. Bien que l’on s’entende sur les bienfaits du transfert des soins institutionnels vers des soins communautaires pour les patients ayant une DD, il s’est révélé difficile de leur dispenser des soins de grande qualité en milieu communautaire. Par ailleurs, il existe peu de travaux de recherche sur les façons d’offrir efficacement des soins aux adultes ayant une DD. En tant que professionnels des soins primaires, les médecins de famille sont souvent le premier point de contact pour les patients et sont à la fois responsables de la coordination et de la continuité des soins. Compte tenu de l’importance accrue accordée aux soins préventifs et à la détection précoce des maladies, la participation active du patient revêt aussi une grande importance. Les valeurs et les objectifs du patient sont des éléments essentiels à prendre en compte, même s’ils vont à l’encontre de la bonne santé du patient ou des propres valeurs du clinicien. Les lois s’appliquant aux personnes vulnérables varient d’une province à l’autre. Par conséquent, l’obligation de signaler des mauvais traitements suspectés pourrait différer selon que la personne vulnérable habite dans un centre de soins ou la communauté, que la personne qui soupçonne le comportement abusif est un fournisseur de services ou un professionnel de la santé ou encore que les circonstances spécifiques répondent à la définition légale de mauvais traitement ou de négligence. Conclusion Les professionnels des soins primaires doivent dispenser aux adultes ayant une DD des soins empreints de compassion qui respectent les souhaits du patient.

  7. The Morne Aux Diables volcano, Dominica, Lesser Antilles: A stratigraphic and petrologic study.

    NASA Astrophysics Data System (ADS)

    Daly, G. L.; Smith, A. L.; Rheubottom, A. N.; Fryxell, J. E.

    2008-12-01

    Morne Aux Diables is a topographically distinct stratovolcano located at the northernmost end of the island of Dominica, Lesser Antilles. In 2007, observations were conducted, and over 3,000 digital photographs were taken, of the well-exposed sea cliffs around Dominica. These observations, together with photogeological analysis of approximately 500 of these digital photographs of sea cliffs around the northern part of Dominica, have significantly improved our understanding of the geology of Morne aux Diables volcano, which previously had been based on scattered land exposures. The photographs were used to identify genetic packages of strata related to volcanogenic events and trace them around large sectors of the volcano's flanks. Based on these new studies, together with previous data, Morne aux Diables appears to have undergone two periods of activity, an older period dated between 2.1-1.5 Ma and a younger period dated at around 50,000 years B.P. Deposits associated with the older cone-forming activity are primarily composed of block and ash flows and surges associated with Pelean-style activity. These can be subdivided into a number of sequences based on the presence of paleosols. Domes associated with these eruptions are found both in the central vent area as well as around the flanks of the volcano. The upper deposits in the sea cliffs on the eastern, northern and western flanks are a thick sequence of surges that have been provisionally correlated with a well-exposed sequence of semi-vesicular block and ash flows and surge deposits at Morne a Louis on the west coast. The presence of these surge deposits at the top of the sea cliffs suggests that the older period of activity ended with open-crater Asama-style eruptions. Following an extensive quiescent period, renewed Pelean-style activity produced valley-fill block and ash flow and surge deposits, exposed on both the eastern and western sides of the volcano, together with associated domes (both central and parasitic). Petrographic studies show that Morne Aux Diables volcano is composed of andesites and dacites with a mineral assemblage of plagioclase+augite±hypersthene with minor hornblende and quartz. Geochemically both the older and younger volcanic rocks show trends, especially in terms of alkalis, that are slightly lower and cross- cut from those shown by the other centers on Dominica. These stratigraphic and petrologic studies will help further elucidate the volcanic history of Morne aux Diables and allow a petrologic-stratigraphic model of its formation.

  8. History of Medical Physics.

    ERIC Educational Resources Information Center

    Laughlin, John S.

    1983-01-01

    Traces the development of basic radiation physics that underlies much of today's medical physics and looks separately at the historical development of two major subfields of medical physics: radiation therapy and nuclear medicine. Indicates that radiation physics has made important contributions to solving biomedical problems in medical…

  9. Charm contribution to bulk viscosity

    E-print Network

    M. Laine; Kiyoumars A. Sohrabi

    2015-02-24

    In the range of temperatures reached in future heavy ion collision experiments, hadronic pair annihilations and creations of charm quarks may take place within the lifetime of the plasma. As a result, charm quarks may increase the bulk viscosity affecting the early stages of hydrodynamic expansion. Assuming thermalization, we estimate the charm contribution to bulk viscosity within the same effective kinetic theory framework in which the light parton contribution has been computed previously. The time scale at which this physics becomes relevant is related to the width of the transport peak associated with the trace anomaly correlator, and is found to be 600 MeV.

  10. Neutrino physics

    Microsoft Academic Search

    F. Dydak

    2004-01-01

    Neutrino physics has a glorious past at CERN. It entered the scene with the groundbreaking discovery of neutral currents in 1973, and made essential contributions, until 1984, toward establishing the rule of the Standard Model. Nature's choice of neutrino oscillation parameters was not favourable to CERN experiments carried out in the subsequent phase, until 1998. However, the new neutrino beam

  11. Morne aux Diables. a potentially active volcano in northern Dominica, Lesser Antilles

    NASA Astrophysics Data System (ADS)

    Rheubottom, A. N.; Smith, A. L.; Roobol, M. J.

    2005-12-01

    The island of Dominica, which is located near the center of the Lesser Antilles island arc, comprises at least 8 potentially active volcanoes. One of these is Morne aux Diables, an isolated composite cone situated at the extreme northern end of the island. Age dating suggests that the main cone building activity occurred between 1.5 and 1.0 million years ago. Exposed on the volcano's flanks however are a number of unconsolidated valley-fill block and ash flow deposits suggesting more recent activity. One of these deposits, on the north-east flank of the volcano, has been recently dated at > 46,000 years B.P. Other evidence of potential activity from this center includes the presence of warm (27°C), acidic (pH 1.6), sulfate-rich springs on the summit of the volcano, hot springs on the coast, and the occurrence in 2002 and 2003 of shallow earthquake swarms partially located beneath the volcano. Morne aux Diables is dominantly composed of deposits of block and ash flows and associated domes from Pelean-style activity, however, semi-vesicular andesite block and ash flows and surges (Asama-style activity) and pumiceous lapilli falls (Plinian-style activity) are locally abundant. The Pelean domes are located both in the summit region and along the southern flanks of the volcano. Petrologically, the volcano is composed of a monotonous series of porphyritic andesites and dacites containing phenocrysts of plagioclase+augite-hypersthene with very sparse crystals of hornblende and quartz. Petrological models suggest the Morne aux Diables andesites and dacites can be produced by fractional crystallization of basaltic magma (such as those erupted from centers such as Morne Anglais and Morne Plat Pays in the south). Minor variations within this suite of andesites and dacites can be related to upper crustal fractionation of phenocryst phases.

  12. Contributed Paper Assessing Citizen Contributions to Butterfly

    E-print Network

    Illinois at Chicago, University of

    Contributed Paper Assessing Citizen Contributions to Butterfly Monitoring in Two Large Cities K. C, we compared butterfly data collected over 10 years in Chicago, Illinois (U.S.A.), and New York City were associated with the reported proportion of the estimated regional pool of butterfly species. We

  13. Carl Neumann’s Contributions to Electrodynamics

    Microsoft Academic Search

    Karl-Heinz Schlote

    2004-01-01

    I examine the publications of Carl Neumann (1832–1925) on electrodynamics, which constitute a major part of his work and which illuminate his approach to mathematical physics. I show how Neumann contributed to physics at an important stage in its development and how his work led to a polemic with Hermann Helmholtz (1821–1894). Neumann advanced and extended the ideas of the

  14. J. Gervais -Le corps des Ponts et Chausses aux prises avec le dbat public Dans : LE BIANIC Thomas et VION Antoine, Action publique et lgitimits

    E-print Network

    Paris-Sud XI, Université de

    J. Gervais - Le corps des Ponts et Chaussées aux prises avec le débat public 134 Dans : LE BIANIC société », 2008. Chapitre 10 Le corps des Ponts et Chaussées aux prises avec le débat public L'action publique de l'École nationale des Ponts et Chaussées, le 21/10/2004. Longtemps, l'appartenance au corps des

  15. C. FLEURANT, G.TUCKER et H. VILES, Modle d'volution de paysages, application aux karsts en cockpit de Jamaque KARSTOLOGIA n49, 2007 33-42

    E-print Network

    Paris-Sud XI, Université de

    33 C. FLEURANT, G.TUCKER et H. VILES, Modèle d'évolution de paysages, application aux karsts en cockpit de Jamaïque KARSTOLOGIA n°49, 2007 · 33-42 Modèle d'évolution de paysages, application aux karsts chacune de ces compo- santes pourront conduire à un paysage différent: un karst à dolines, un fluvio

  16. Introduction Restriction aux ordres totaux Dveloppement algbrique Passage du 2D au 3D Caractrisation 3D Conclusion Dtermination du chirotope d'une base en fonction

    E-print Network

    Pocchiola, Michel

    Introduction Restriction aux ordres totaux Développement algébrique Passage du 2D au 3D Caractérisation 3D Conclusion Détermination du chirotope d'une base en fonction d'ordres sur les coordonnées de;Introduction Restriction aux ordres totaux Développement algébrique Passage du 2D au 3D Caractérisation 3D

  17. Diversity of Stability, Localization, Interaction and Control of Downstream Gene Activity in the Maize Aux/IAA Protein Family

    PubMed Central

    Ludwig, Yvonne; Berendzen, Kenneth W.; Xu, Changzheng; Piepho, Hans-Peter; Hochholdinger, Frank

    2014-01-01

    AUXIN/INDOLE-3-ACETIC ACID (Aux/IAA) proteins are central regulators of auxin signal transduction. They control many aspects of plant development, share a conserved domain structure and are localized in the nucleus. In the present study, five maize Aux/IAA proteins (ZmIAA2, ZmIAA11, ZmIAA15, ZmIAA20 and ZmIAA33) representing the evolutionary, phylogenetic and expression diversity of this gene family were characterized. Subcellular localization studies revealed that ZmIAA2, ZmIAA11 and ZmIAA15 are confined to the nucleus while ZmIAA20 and ZmIAA33 are localized in both the nucleus and the cytoplasm. Introduction of specific point mutations in the degron sequence (VGWPPV) of domain II by substituting the first proline by serine or the second proline by leucine stabilized the Aux/IAA proteins. While protein half-life times between ?11 min (ZmIAA2) to ?120 min (ZmIAA15) were observed in wild-type proteins, the mutated forms of all five proteins were almost as stable as GFP control proteins. Moreover, all five maize Aux/IAA proteins repressed downstream gene expression in luciferase assays to different degrees. In addition, bimolecular fluorescence complementation (BiFC) analyses demonstrated interaction of all five Aux/IAA proteins with RUM1 (ROOTLESS WITH UNDETECTABLE MERISTEM 1, ZmIAA10) while only ZmIAA15 and ZmIAA33 interacted with the RUM1 paralog RUL1 (RUM-LIKE 1, ZmIAA29). Moreover, ZmIAA11, ZmIAA15 ZmIAA33 displayed homotypic interaction. Hence, despite their conserved domain structure, maize Aux/IAA proteins display a significant variability in their molecular characteristics which is likely associated with the wide spectrum of their developmental functions. PMID:25203637

  18. Auxin-nonresponsive grape Aux/IAA19 is a positive regulator of plant growth.

    PubMed

    Kohno, Minako; Takato, Haruka; Horiuchi, Haruka; Fujita, Keiko; Suzuki, Shunji

    2012-02-01

    We report the characterization of VvIAA19, an auxin/indole-3-acetic acid (Aux/IAA) protein, in grapevine (Vitis vinifera L.). VvIAA19 was expressed abundantly in berries. VvIAA19 transcription was rapidly increased at pre-anthesis and then decreased during fruit set. Before véraison, however, VvIAA19 gene expression was upregulated again and maximum expression was maintained until the end of ripening. Exogenous IAA did not induce VvIAA19 expression in grape leaves, suggesting that VvIAA19 might be auxin-nonresponsive. The overexpression of VvIAA19 in Arabidopsis thaliana had a notable effect on plant growth. Although no morphological changes were observed, transgenic Arabidopsis plants overexpressing VvIAA19 exhibited faster growth, including root elongation and floral transition, than the control plant, suggesting that the constitutive expression of VvIAA19 protein resulted in increased growth rates without any detectable harm. Taken together, we conclude that grape Aux/IAA19 protein is likely to play a crucial role as a plant growth regulator. PMID:21562765

  19. Morphological variations in AuxSiy nanostructures under variable pressure and annealing conditions

    NASA Astrophysics Data System (ADS)

    Rath, A.; Dash, J. K.; Juluri, R. R.; Satyam, P. V.

    2015-03-01

    Well-ordered, substrate symmetry-driven, AuxSiy structures of average size ~25 nm were formed under ultra-high vacuum (UHV) conditions using molecular beam epitaxy method. Post-annealing was done at 500 °C in three different vacuum conditions: (1) low vacuum (LV) (10-2 mbar), (2) high vacuum (HV) (10-5 mbar) and (3) UHV (10-10 mbar) (MBE chamber). For both HV and LV cases, the AuxSiy nanostructures were found to have their corners rounded unlike in UHV case where the structures have sharp edges. In all the above three cases, samples were exposed to air before annealing. In situ annealing inside UHV chamber without exposing to air resulted in well-aligned rectangles with sharp corners, while sharp but irregular island structures were found for air exposed and UHV annealing system. The role of residual gases present in LV and HV annealing environment and inhibition of lateral surface diffusion due to the presence of surface oxide (through air exposure) would be discussed. Annealing at various conditions yielded variation in the coverage and correspondingly, the average area of nanostructures varied from a ~329 nm2 (as deposited) to ~2,578 nm2 (at high temperature). High-resolution transmission electron microscopy (planar and cross section) has been utilized to study the morphological variations.

  20. Physical fitness training for people with stroke 

    E-print Network

    Saunders, David H.

    2009-01-01

    INTRODUCTION: Impaired physical fitness may contribute to functional limitations and disability after stroke. Physical fitness (including cardiorespiratory fitness and muscle strength/power) can be improved by appropriate ...

  1. Prediction of core level binding energies in density functional theory: Rigorous definition of initial and final state contributions and implications on the physical meaning of Kohn-Sham energies

    NASA Astrophysics Data System (ADS)

    Pueyo Bellafont, Noèlia; Bagus, Paul S.; Illas, Francesc

    2015-06-01

    A systematic study of the N(1s) core level binding energies (BE's) in a broad series of molecules is presented employing Hartree-Fock (HF) and the B3LYP, PBE0, and LC-BPBE density functional theory (DFT) based methods with a near HF basis set. The results show that all these methods give reasonably accurate BE's with B3LYP being slightly better than HF but with both PBE0 and LCBPBE being poorer than HF. A rigorous and general decomposition of core level binding energy values into initial and final state contributions to the BE's is proposed that can be used within either HF or DFT methods. The results show that Koopmans' theorem does not hold for the Kohn-Sham eigenvalues. Consequently, Kohn-Sham orbital energies of core orbitals do not provide estimates of the initial state contribution to core level BE's; hence, they cannot be used to decompose initial and final state contributions to BE's. However, when the initial state contribution to DFT BE's is properly defined, the decompositions of initial and final state contributions given by DFT, with several different functionals, are very similar to those obtained with HF. Furthermore, it is shown that the differences of Kohn-Sham orbital energies taken with respect to a common reference do follow the trend of the properly calculated initial state contributions. These conclusions are especially important for condensed phase systems where our results validate the use of band structure calculations to determine initial state contributions to BE shifts.

  2. Identification de ligands des enzymes de rsistance aux aminoglycosides par RMN. NMR identification of ligands of aminoglycoside resistance enzymes.

    E-print Network

    Paris-Sud XI, Université de

    - 1 - Identification de ligands des enzymes de résistance aux aminoglycosides par RMN. NMR identification of ligands of aminoglycoside resistance enzymes. Frédérique Maurice1 , Guillaume Bégis2 , Laurent principalement la conséquence de l'action d'enzymes qui modifient chimiquement ces antibiotiques et les empêchent

  3. CIEAEM 57 Italie Italy Foire aux ides, Session de Poster Piazza Armerina, Forum of Ideas, Poster Session

    E-print Network

    Spagnolo, Filippo

    CIEAEM 57 ­ Italie ­ Italy Foire aux idées, Session de Poster Piazza Armerina, Forum of Ideas, Poster Session July 23-29, 2005 will have a format of a poster. It will focus on the illustrations of the above goals. Problems from

  4. CIEAEM 57 Italie Italy Foire aux ides, Session de Poster Piazza Armerina, Forum of Ideas, Poster Session

    E-print Network

    Spagnolo, Filippo

    CIEAEM 57 ­ Italie ­ Italy Foire aux idées, Session de Poster Piazza Armerina, Forum of Ideas, Poster Session July 23-29, 2005. Kiliskiego 12, piotr@wlodkowic.pl The poster is to present the first results of research made among teachers

  5. Du suicide de Mme Follin en 1828 aux suicides du dbut du XXe sicle: pour une tude

    E-print Network

    Paris-Sud XI, Université de

    Du suicide de Mme Follin en 1828 aux suicides du début du XXe siècle: pour une étude des violences'extinction du suicide, Revue de Rouen, 1844). Introduction Le 16 décembre 1828 le préfet de la Seine « suicide » chez les aliénés « fous moraux » ou suicidaires. L'ouverture des cerveaux permettrait de définir

  6. Etude du vieillissement de la glace Ih par mesures de frottement interne et par observation en topographie aux rayons X

    E-print Network

    Paris-Sud XI, Université de

    1473 Etude du vieillissement de la glace Ih par mesures de frottement interne et par observation en par mesures de frottement interne et par des observations en topographie aux rayons X. Ces mesures défauts de réseau. En effet, nos études antérieures [11, 14, 17] portant sur le frottement interne de la

  7. Prediction of core level binding energies in density functional theory: Rigorous definition of initial and final state contributions and implications on the physical meaning of Kohn-Sham energies.

    PubMed

    Pueyo Bellafont, Noèlia; Bagus, Paul S; Illas, Francesc

    2015-06-01

    A systematic study of the N(1s) core level binding energies (BE's) in a broad series of molecules is presented employing Hartree-Fock (HF) and the B3LYP, PBE0, and LC-BPBE density functional theory (DFT) based methods with a near HF basis set. The results show that all these methods give reasonably accurate BE's with B3LYP being slightly better than HF but with both PBE0 and LCBPBE being poorer than HF. A rigorous and general decomposition of core level binding energy values into initial and final state contributions to the BE's is proposed that can be used within either HF or DFT methods. The results show that Koopmans' theorem does not hold for the Kohn-Sham eigenvalues. Consequently, Kohn-Sham orbital energies of core orbitals do not provide estimates of the initial state contribution to core level BE's; hence, they cannot be used to decompose initial and final state contributions to BE's. However, when the initial state contribution to DFT BE's is properly defined, the decompositions of initial and final state contributions given by DFT, with several different functionals, are very similar to those obtained with HF. Furthermore, it is shown that the differences of Kohn-Sham orbital energies taken with respect to a common reference do follow the trend of the properly calculated initial state contributions. These conclusions are especially important for condensed phase systems where our results validate the use of band structure calculations to determine initial state contributions to BE shifts. PMID:26049474

  8. Le système opioïde endogène et l’addiction aux drogues1

    PubMed Central

    Maldonado, Rafael

    2010-01-01

    Résumé L’addiction aux drogues est une maladie psychiatrique chronique qui conduit à d’importantes altérations adaptatives dans les circuits de récompense du cerveau. Plusieurs systèmes de neurotransmission sont impliqués dans ces modifications. Cependant, un des systèmes neurochimiques qui joue un rôle essentiel dans l’addiction est le système opioïde endogène. Les récepteurs opioïdes et les peptides opioïdes endogènes sont très largement présents dans les structures cérébrales qui contrôlent les phénomènes de récompense, en particulier le système mésolimbique. Ces récepteurs et peptides opioïdes participent d’une manière sélective à plusieurs aspects des processus addictifs induits par les opiacés, les cannabinoïdes, les psychostimulants, l’alcool et la nicotine. Cette revue rend compte de l’état actuel des connaissances sur la participation de chaque composante du système opioïde endogène dans les propriétés addictives des différentes drogues. PMID:20176158

  9. Heavy flavour physics at LEP

    Microsoft Academic Search

    Roger Forty

    2004-01-01

    Heavy flavour physics that was studied at LEP is reviewed; tau and top physics are touched on, and then the B physics results are discussed. Although no dramatic discoveries were made at LEP, the precision experiments there have made a great contribution to the understanding of many aspects of physics within the Standard Model, and this is particularly true for

  10. 75 Years of Physics at NBS

    ERIC Educational Resources Information Center

    Ambler, Ernest

    1976-01-01

    This historical survey describes the contributions made to the field of physics by the National Bureau of Standards since its inception in 1901. Four broad areas are emphasized: nuclear physics, thermal physics (including cryogenics), spectroscopy and fundamental constants. (BT)

  11. H:\\INST\\AUXBGT\\FY13UWM\\Kickoff Info\\Kickoff Packet\\1213 Aux Kickoff Agenda.doc University of Wisconsin Milwaukee

    E-print Network

    Saldin, Dilano

    \\Internal Aux Financing\\Fund 128 Proj Cash Bal_as of 9-23-11.xls *NOTE: Cash balances shown do not include Cash Bal_as of 9-23-11.xls #12;SCHEDULE 2 Projected Cash Balance - (In Thousands $) Funds 123, 128/7/2011 H:\\INST\\AUXBGT\\FY13UWM\\Internal Aux Financing\\Fund 128 Proj Cash Bal_as of 9-23-11.xls #12;SCHEDULE

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

    NASA Astrophysics Data System (ADS)

    Chennouf, Adil

    L'objectif general de la presente these est d'evaluer le comportement a l'arrachement et au fluage d'ancrages injectes constitues de tendons en materiaux composites afin d'etablir des recommandations plus appropriees et realistes pour le dimensionnement et la conception. Quatre types de tendons en materiaux composites, deux a base de fibres d'aramide et deux a base de fibres de carbone, ont ete utilises dans l'etude. Les travaux de recherche de cette these ont porte notamment sur: (I) Une caracterisation physique et mecanique des tendons en materiaux composites utilises dans l'etude. (II) Une etude en laboratoire sur les coulis de scellement. La premiere etape de cette etude a concerne le developpement d'un coulis de scellement performant adapte aux tendons en materiaux composites et a differentes situations d'injection. La seconde etape a traite des essais de caracterisations physique et mecanique du coulis de scellement developpe comparativement a trois coulis de scellement usuels d'un meme rapport E/L de 0,4. (III) Une etude sur des modeles reduits d'ancrages injectes. (IV) Une etude sur des modeles d'ancrages a grande echelle. La synthese de ces etudes a permis d'enoncer les principales conclusions suivantes: (1) Les valeurs moyennes des charges de rupture des tendons en materiaux composites ont ete de 1% a 29% superieures a celles specifiees par les manufacturiers. (2) L'etude sur les coulis de scellement a permis le developpement de coulis de ciment repondant aux criteres fixes, soient une grande stabilite, une bonne fluidite, une legere expansion et de bonnes caracteristiques mecaniques. (3) Les tendons en materiaux composites ont montre des contraintes d'adherence maximum superieures a celles des tendons en acier. (4) Le type de fibre, la configuration et le fini de surface des tendons en materiaux composites gouvernent leur resistance a l'adherence. (5) L'introduction de sable et d'autres ajouts comme les fines de silice et la poudre d'aluminium au coulis de ciment a permis d'ameliorer la resistance a l'adherence. (6) Il existe une relation lineaire entre la charge maximum et la longueur ancree des tendons. Des equations sont proposees. (7) La capacite a l'arrachement des ancrages injectes augmente avec l'augmentation du module d'elasticite du milieu encaissant. (8) Les mono-tendons et multi-tendons en materiaux composites injectes sur 1000 mm ont montre des comportements a l'arrachement acceptables conformement aux codes. (9) Les rigidites apparentes des tendons a base de fibres d'aramide sont de trois a cinq fois inferieures a celles des tendons a base de fibres de carbone. (10) L'amorce de la decohesion en haut de la zone ancree ne semble se produire qu'au-dela d'une charge de 0,35 fpu pour les tendons a base de fibres de carbone alors qu'elle prend naissance des l'application de la charge pour les tendons a base de fibres d'aramide. (11) Le taux de fluage depend du niveau de chargement ainsi que des caracteristiques geometriques et mecaniques de l'ancrage (type de fibres, fini de surface, nombre de tendons, etc.). (12) Des equations regissant le comportement au fluage des tendons en materiaux composites ont ete etablies pour une periode d'essai de 60 mn. (Abstract shortened by UMI.)

  13. CONDUCTION THERMIQUE DES VERRES AUX BASSES TEMPRATURES A. J. LEADBETTER (*), A. P. JEAPES et C. G. WATERFIELD

    E-print Network

    Paris-Sud XI, Université de

    95 CONDUCTION THERMIQUE DES VERRES AUX BASSES TEMPÉRATURES A. J. LEADBETTER (*), A. P. JEAPES et C. 2014 Les conductions thermiques des verres GeO2, B2O3, BeF2, As2S3, As2Se3, GeS2, CaMgSi2O6, verre et phonons sur les frontières des cristallites. Tous les verres présentent un épaulement dans les courbes K

  14. The Tomato Aux/IAA Transcription Factor IAA9 Is Involved in Fruit Development and Leaf MorphogenesisW?

    PubMed Central

    Wang, Hua; Jones, Brian; Li, Zhengguo; Frasse, Pierre; Delalande, Corinne; Regad, Farid; Chaabouni, Salma; Latché, Alain; Pech, Jean-Claude; Bouzayen, Mondher

    2005-01-01

    Auxin/indole-3-acetic acid (Aux/IAA) proteins are transcriptional regulators that mediate many aspects of plant responses to auxin. While functions of most Aux/IAAs have been defined mainly by gain-of-function mutant alleles in Arabidopsis thaliana, phenotypes associated with loss-of-function mutations have been scarce and subtle. We report here that the downregulation of IAA9, a tomato (Solanum lycopersicum) gene from a distinct subfamily of Aux/IAA genes, results in a pleiotropic phenotype, consistent with its ubiquitous expression pattern. IAA9-inhibited lines have simple leaves instead of wild-type compound leaves, and fruit development is triggered before fertilization, giving rise to parthenocarpy. This indicates that IAA9 is a key mediator of leaf morphogenesis and fruit set. In addition, antisense plants displayed auxin-related growth alterations, including enhanced hypocotyl/stem elongation, increased leaf vascularization, and reduced apical dominance. Auxin dose–response assays revealed that IAA9 downregulated lines were hypersensitive to auxin, although the only early auxin-responsive gene that was found to be upregulated in the antisense lines was IAA3. The activity of the IAA3 promoter was stimulated in the IAA9 antisense genetic background, indicating that IAA9 acts in planta as a transcriptional repressor of auxin signaling. While no mutation in any member of subfamily IV has been reported to date, the phenotypes associated with the downregulation of IAA9 reveal distinct and novel roles for members of the Aux/IAA gene family. PMID:16126837

  15. Application of the New Decommissioning Regulation to the Nuclear Licensed Facilities (NLF) at Fontenay-aux-Roses's Nuclear Center (CEA)

    Microsoft Academic Search

    Josiane Sauret; Laurence Piketty; Michel Jeanjacques

    2008-01-01

    This abstract describes the application of the new decommissioning regulation on all Nuclear Licensed Facilities (NLF is to say INB in French) at Fontenay-aux-Roses's Center (CEA\\/FAR). The decommissioning process has been applied in six buildings which are out of the new nuclear perimeter proposed (buildings no 7, no 40, no 94, no 39, no 52\\/1 and no 32) and three

  16. Neuromuscular contributions to age-related weakness

    Technology Transfer Automated Retrieval System (TEKTRAN)

    Age-related physiological change of neuromuscular function is not a linear process and is likely influenced by various biological and behavioral factors (e.g., genetics, nutrition, physical activity level, comorbidities, etc.). These factors contribute to heterogeneity among older adults, which chal...

  17. Minority Contributions to Science, Engineering, and Medicine.

    ERIC Educational Resources Information Center

    Funches, Peggy; And Others

    Offering an historical perspective on the development of science, engineering, medicine, and technology and providing current role models for minority students, the bulletin lists the outstanding contributions made by: (1) Blacks - medicine, chemistry, architecture, engineering, physics, biology, and exploration; (2) Hispanos - biomedical…

  18. Niveau socioéconomique et processus du recours aux soins par les familles de patients souffrant de troubles psychiques au Burkina Faso

    PubMed Central

    Yaogo, Ahmed; Sommer, Alain; Moulaï, Pierre; Chebili, Saïd; Abaoub-Germain, Agnès

    2014-01-01

    Introduction Le Burkina Faso a connu une amélioration constante depuis deux décennies de l'offre de soins en psychiatrie. De même, le taux d'alphabétisation sans cesse croissant s'accompagne d'une profonde modification des conceptions et des comportements. La présente étude visait à déterminer l?impact des déterminants socioéconomiques sur le processus du recours aux soins par les familles. Méthodes Il s'est agi d'une enquête transversale portant sur 200 familles, menée dans le service de psychiatrie du Centre Hospitalier Universitaire Yalgado Ouédraogo de Ouagadougou. Variable à expliquer: premier recours aux soins par les familles (guérisseur traditionnel ou prières religieuses vs. consultations psychiatrique ou médicale). Variable explicative: catégorie socioprofessionnelle classée en suivant la nomenclature des professions et catégories socioprofessionnelles; niveau d’études. L'analyse statistique a été effectuée à l'aide du logiciel SAS version 9.2. Le test du Khi deux a été utilisé. Résultats Il existait une association entre le choix du premier recours et la Profession et la catégorie socioprofessionnelledu « décideur » (p = 0.0006) ainsi que leniveau d’études du « décideur » (p = 0.0001). Conclusion La Profession et Catégorie Sociale et le niveau d'instruction scolaire pourraient être un marqueur important dans les politiques visant à optimiser les processus de recours aux soins des patients dans le circuit de soins. PMID:25161751

  19. Freud's contribution to neuroanatomy.

    PubMed

    Triarhou, L C; del Cerro, M

    1985-03-01

    Sigmund Freud, the acknowledged father of psychoanalysis, started his scientific career as a very promising neurohistologist. This report gives an overview of his early neuroanatomic articles and pioneering contributions to 19th-century neurologic science. PMID:3883963

  20. 3 The Islamic Contribution

    E-print Network

    Joseph, Robert D.

    3 The Islamic Contribution 3.1 Historical Background Hellenistic Greece · The conquests of Philip Christianity the official state religion of his empire. · Hence the Byzantine empire became a Christian empire

  1. Top Quark Physics

    Microsoft Academic Search

    Thomas Teubner

    1999-01-01

    In this contribution I review the physics of top quarks at a future Linear Collider. Main emphasis is put on the process e+ e- --> t bar t close to threshold. Different physical observables, their sensitivity to the basic parameters and their theoretical prediction are discussed. Recent higher order calculations are shown to have a considerable impact on a precise

  2. The role of the hygienist in prevention and health promotion through physical activity: the contribute of the Working Group "Movement Sciences for Health" of the Italian Society of Hygiene.

    PubMed

    Liguori, G; Gallé, F; Valeriani, F; Romano Spica, V

    2015-01-01

    Inactivity is the fourth leading risk factor for chronic diseases morbidity and mortality, with high related costs. Exercise represents a useful instrument of preventive medicine due to its effects in maintaining and improving psycho-physical wellbeing at any age and condition. The promotion of physical activity may represent an important prevention strategy for public health, and it implies an interaction among several figures from health and wellbeing settings. Due to their competencies in prevention and health promotion, hygienists play a fundamental role as intermediary among the different actors involved in this multidisciplinary scenario. The Working Group "Movement Sciences for Health" of the Italian Society of Hygiene, established in 2009, is engaged in detailing, evaluating and strengthening the role of physical activity for health promotion. It combines rigorous research activities regarding human movement for health with their application in public health setting and with the evaluation of their sustainability. Its attention is also focused on the safety aspects related to structural conditions of sport facilities and to health conditions or behaviours of their users as well. These activities led to numerous scientific publications and training events. PMID:25748501

  3. Xe{sup +} formation following photolysis of Au-Xe: A velocity map imaging study

    SciTech Connect

    Hopkins, W. Scott; Woodham, Alex P.; Mackenzie, Stuart R. [Department of Chemistry, University of Oxford, Physical and Theoretical Chemistry Laboratory, South Parks Road, Oxford OX1 3QZ (United Kingdom); Plowright, Richard J.; Wright, Timothy G. [School of Chemistry, University of Nottingham, University Park, Nottingham NG7 2RD (United Kingdom)

    2011-03-07

    The photodissociation dynamics of Au-Xe leading to Xe{sup +} formation via the {Xi}{sub 1/2}-X{sup 2}{Sigma}{sup +} (v{sup '}, 0) band system (41 500-41 800 cm{sup -1}) have been investigated by velocity map imaging. Five product channels have been indentified, which can be assigned to photoinduced charge transfer followed by photodissociation in either the neutral or the [Au-Xe]{sup +} species. For the neutral species, charge transfer occurs via a superexcited Rydberg state prior to dissociative ionization, while single-photon excitation of the gold atom in Au{sup +}-Xe accesses an (Au{sup +})*-Xe excited state that couples to a dissociative continuum in Au-Xe{sup +}. Mechanisms by which charge transfer occurs are proposed, and branching ratios for Xe{sup +} formation via the superexcited Rydberg state are reported. The bond dissociation energy for the first excited state of Au{sup +}-Xe is determined to be {approx}9720 {+-} 110 cm{sup -1}.

  4. Factors contributing to adolescent obesity.

    PubMed

    Al-Kloub, Manal I; Froelicher, Erika S

    2009-06-01

    Obesity in children is a significant public health concern. The prevalence of overweight and obesity in Jordanian children, and adolescents has increased in the last decade. The consequences of obesity to health in childhood and adulthood have both medical, and economic cost to individuals and society. This paper reviews the factors that contribute to adolescent obesity and emphasizes behavioral and environmental factors. An individual's behaviors such as increased consumption of high caloric foods, increased sedentary activity while decreasing physical activity has been identified as key issues in the development of obesity. Additionally, the current environment in homes, schools, and neighborhoods tend to discourage a healthy lifestyle. A comprehensive approach that involves the whole community is the best strategy for preventing adolescent obesity. Nurses are in a unique position to provide leadership in developing programs for healthier lifestyle choices for adolescents' and adoption of these goals into their daily lives. PMID:19526153

  5. Panel acoustic contribution analysis.

    PubMed

    Wu, Sean F; Natarajan, Logesh Kumar

    2013-02-01

    Formulations are derived to analyze the relative panel acoustic contributions of a vibrating structure. The essence of this analysis is to correlate the acoustic power flow from each panel to the radiated acoustic pressure at any field point. The acoustic power is obtained by integrating the normal component of the surface acoustic intensity, which is the product of the surface acoustic pressure and normal surface velocity reconstructed by using the Helmholtz equation least squares based nearfield acoustical holography, over each panel. The significance of this methodology is that it enables one to analyze and rank relative acoustic contributions of individual panels of a complex vibrating structure to acoustic radiation anywhere in the field based on a single set of the acoustic pressures measured in the near field. Moreover, this approach is valid for both interior and exterior regions. Examples of using this method to analyze and rank the relative acoustic contributions of a scaled vehicle cabin are demonstrated. PMID:23363099

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

    PubMed Central

    Liu, Shanda; Hu, Qingnan; Luo, Sha; Li, Qianqian; Yang, Xiyu; Wang, Xianling; Wang, Shucai

    2015-01-01

    Aux/IAA proteins are transcriptional repressors that control auxin signaling by interacting with auxin response factors (ARFs). So far all of the identified Aux/IAA mutants with auxin-related phenotypes in Arabidopsis and rice (Oryza sativa) are dominant gain-of-function mutants, with mutations in Domain II that affected stability of the corresponding Aux/IAA proteins. On the other hand, morphological changes were observed in knock-down mutants of Aux/IAA genes in tomato (Solanum lycopersicum), suggesting that functions of Aux/IAA proteins may be specific for certain plant species. We report here the characterization of PtrIAA14.1, a poplar (Populus trichocarpa) homolog of IAA7. Bioinformatics analysis showed that PtrIAA14.1 is a classic Aux/IAA protein. It contains four conserved domains with the repressor motif in Domain I, the degron in Domain II, and the conserved amino acid signatures for protein–protein interactions in Domain III and Domain IV. Protoplast transfection assays showed that PtrIAA14.1 is localized in nucleus. It is unable in the presence of auxin, and it represses auxin response reporter gene expression. Expression of wild-type PtrIAA14.1 in Arabidopsis resulted in auxin-related phenotypes including down-curling leaves, semi-draft with increased number of branches, and greatly reduced fertility, but expression of the Arabidopsis Aux/IAA genes tested remain largely unchanged in the transgenic plants. Protein–protein interaction assays in yeast and protoplasts showed that PtrIAA14.1 interacted with ARF5, but not other ARFs. Consistent with this observation, vascular patterning was altered in the transgenic plants, and the expression of AtHB8 (Arabidopsis thaliana homeobox gene 8) was reduced in transgenic plants. PMID:26082787

  7. EMSL Contribution Plan

    Microsoft Academic Search

    Allison A

    2008-01-01

    This Contribution Plan is EMSLs template for achieving our vision of simultaneous excellence in all aspects of our mission as a national scientific user facility. It reflects our understanding of the long-term stewardship we must work toward to meet the scientific challenges faced by the Department of Energy (DOE) and the nation. During the next decade, we will implement the

  8. Contributed Papers, 1967.

    ERIC Educational Resources Information Center

    Special Libraries Association, New York, NY. Documentation Div.

    Included are six papers from the Special Libraries Association Documentation Division's Contributed Papers Session at the National Conference in New York, May 28 - June 1, 1967, which were not included in the November, 1967 issue of Special Libraries. The papers are: (1) "The Bibliographical Control of Aerospace Industry Conference Literature…

  9. CONTRIBUTED Green Cloud Computing

    E-print Network

    Tucker, Rod

    CONTRIBUTED P A P E R Green Cloud Computing: Balancing Energy in Processing, Storage, and Transport to energy consumption and cloud computing seems to be an alternative to office-based computing. By Jayant computing is rapidly expanding as an alternative to conventional office-based computing. As cloud computing

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

    PubMed Central

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

    2013-01-01

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

  11. Society of Physics Students

    NSDL National Science Digital Library

    The Society of Physics Students (SPS) was formed in 1968 "to help students transform themselves into contributing members of the professional community." This website contains a panoply of material on professional conferences and related activities, while this particular section focuses in on educational opportunities. The materials here are divided into nine primary areas, including Career Resources, Undergraduate Research Resources, General Physics Sites, and Physics Publications. In the Career Resources area, visitors will find links to the Sloan Career Cornerstone Center, the American Physical Society and a very helpful resource titled "Landing Your First Job: A Field Guide for Physics Students." The site also contains links to key publications, such as "Physics Today" and "The Industrial Physicist." Finally, visitors can find links to organizations that work to enhance and increase the participation of minority groups in physics, such as the APS Committee on Minorities and the National Society of Black Physicists.

  12. Evolution de la résistance aux antibiotiques des entérobactéries isolées à l'Hôpital Général de Douala de 2005 à 2012

    PubMed Central

    Ebongue, Cécile Okalla; Tsiazok, Martial Dongmo; Mefo'o, Jean Pierre Nda; Ngaba, Guy Pascal; Beyiha, Gérard; Adiogo, Dieudonné

    2015-01-01

    Introduction Cette étude vise à déterminer le profil de résistance aux antibiotiques des entérobactéries isolées à l'Hôpital Général de Douala (Cameroun) et analyser leur évolution dans le temps. Méthodes Etude rétrospective, sur une période de huit ans (2005 - 2012), portant sur l'ensemble des souches d'entérobactéries isolées chez les malades ambulatoires et hospitalisés. Les prélèvements ont été analysés au laboratoire de bactériologie de l'Hôpital Général de Douala. Résultats Les entérobactéries étaient les germes les plus fréquents sur l'ensemble des souches isolées. Nous avons noté une prédominance d’Escherichia coli (48,5%) et de Klebsiella pneumoniae (32,8%). Pendant la période d’étude, nous avons observé des taux de résistance élevés aux principales classes d'antibiotiques, et une augmentation entre 2005 et 2012 de 29,1% à 51,6% pour les céphalosporines de troisième génération, de 29,2% à 44% pour la ciprofloxacine. L'imipénème, l'amikacine et la fosfomycine étaient les molécules les plus actives avec respectivement 1,3%, 12,9% et 13,4% des souches d'entérobactéries résistantes. Conclusion L’évolution des résistances des entérobactéries aux antibiotiques est un phénomène réel dans la ville de Douala. Il expose à des difficultés de prise en charge thérapeutique des infections. Lamaitrise actuelle de ce phénomène est une véritable urgence et nécessite une implication des pouvoirs publics. Des tests spécifiques de recherche des bétalactamases à spectre élargi (BLSE) et AmpC doivent être mis en place dans nos laboratoires afin de mettre en évidence les différents phénotypes de résistances.

  13. EDITORIAL: Physics competitions Physics competitions

    NASA Astrophysics Data System (ADS)

    Jordens, H.; Mathelitsch, L.

    2010-07-01

    This editorial opens the second special section on physics competitions in European Journal of Physics. In the first section last year, we asked for feedback on the idea of such a section and on the content of the articles. We received no answer whatsoever, which can be interpreted in two ways: the section is not interesting enough to raise motivation for feedback, or the reader is satisfied. Having no indication which scenario is the correct one, we are optimistic and favour the second. The section at hand contains three articles. Again, as last year, the organizer of the annual Olympiad reports on tasks and outcomes of this competition. The Olympiad took place in Merida, Mexico, and was by far the largest event with 316 contestants from 68 countries. Again, the predominance of Asian/Chinese students was manifest, showing how serious the training is taken by both their authorities and students. Unfortunately, the winners of the last International Young Physicists' Tournament (IYPT), the team from Korea, did not accept the offer to report on their prize-winning contribution. We are thankful that two students from Austria, who achieved second place with their team, took over and reported on the task which they presented in the finals of the competition. It connects the fields of sport and physics and explains a special move in skateboarding. The third contribution introduces a different competition, 'International Conference of Young Scientists'. On one hand, as in the Olympiad, it addresses individuals, not teams. On the other, as in the IYPT, students have several months to prepare and also the quality of the presentation is an important element of the judgment. In fact, this competition comes closer to real scientific research compared to the other events. Finally and again, we hope that this section will serve several purposes: To show the competitions as a very important tool in the support of gifted students. To raise awareness amongst university teachers, and to help bridge the gap between physics teaching at schools and university. To point out that the tasks in these competitions are often suitable for university labs and as exercises. For more information, please consult the following websites: Physics Olympiad: http://ipho.phy.ntnu.edu.tw IYPT: http://www.iypt.org/new ICYS: http://metal.elte.hu/~icys/

  14. Abstracts of contributed papers

    SciTech Connect

    Not Available

    1994-08-01

    This volume contains 571 abstracts of contributed papers to be presented during the Twelfth US National Congress of Applied Mechanics. Abstracts are arranged in the order in which they fall in the program -- the main sessions are listed chronologically in the Table of Contents. The Author Index is in alphabetical order and lists each paper number (matching the schedule in the Final Program) with its corresponding page number in the book.

  15. Johannes Kepler and his contribution to Applied Mathematics

    Microsoft Academic Search

    Franz Pichler

    1998-01-01

    The worldwide renown of Johannes Kepler is based above all on his contribution to astronomy. The 3 Kepler's Laws relating to the planets are well known and will ensure that his name is remembered by future generations. Besides his astronomical work, Kepler also made important contributions in the fields of theology, physics, phylosophy and mathematics. The actual paper discusses the

  16. Universite Pierre et Marie Curie, Master de Mathematiques, M1, Equations aux derivees partielles MM046, 5 juin 2013

    E-print Network

    Lerner, Nicolas

    Universit´e Pierre et Marie Curie, Master de Math´ematiques, M1, Equations aux d - c x2 x = x1 x x1 + x2 x x2 = x1 + x2 et par cons´equent c = 2 x2 1 + 2 x2 2 - 2 2 x1x2 - 2 x2) = 1 - |x|, x R. La m´ethode des caract´eristiques donne x = u u = u x = x0 + u0(et - 1) u = u0et et

  17. Estimating areas contributing recharge to wells, lessons from previous studies

    USGS Publications Warehouse

    Franke, O. Lehn; Reilly, T.E.; Pollock, D.W.; LaBaugh, J.W.

    1998-01-01

    Factors relating to the estimation of areas contributing recharge to wells, such as complexity of the ground-water flow system, effects of changing hydrologic conditions, and effects of well-screen locations and pumping rates, are reviewed. The point of view that simulation is the best means to obtain physically based estimates of contributing areas is emphasized. An extensive list of USGS reports that include estimation of contributing areas is provided.

  18. Turkic Contributions To The CLIC Project

    NASA Astrophysics Data System (ADS)

    Çiftçi, A. K.

    2007-04-01

    Turkic group has been a collaborator of CLIC project of CERN since mid-2004. Since then, the group has been contributing CLIC study efforts on: impact of beam dynamics issues on CLIC Physics potential, CLIC*LHC interface (QCD Explorer, ep, ?p, eA and ?A colliding options and FEL ? Nucleus Collider) and operation of CTF3. On this talk the status of the collaboration is given in details.

  19. Turkic Contributions To The CLIC Project

    SciTech Connect

    Ciftci, A. K. [Physics Department, Faculty of Sciences, Ankara University, 06100 Tandogan, Ankara (Turkey)

    2007-04-23

    Turkic group has been a collaborator of CLIC project of CERN since mid-2004. Since then, the group has been contributing CLIC study efforts on: impact of beam dynamics issues on CLIC Physics potential, CLIC*LHC interface (QCD Explorer, ep, {gamma}p, eA and {gamma}A colliding options and FEL {gamma} Nucleus Collider) and operation of CTF3. On this talk the status of the collaboration is given in details.

  20. Turkic Contributions To The CLIC Project

    Microsoft Academic Search

    Ciftci

    2007-01-01

    Turkic group has been a collaborator of CLIC project of CERN since mid-2004. Since then, the group has been contributing CLIC study efforts on: impact of beam dynamics issues on CLIC Physics potential, CLIC*LHC interface (QCD Explorer, ep, p, eA and A colliding options and FEL Nucleus Collider) and operation of CTF3. On this talk the status of the collaboration

  1. ALICE soft physics summary

    E-print Network

    Dariusz Miskowiec; for the ALICE Collaboration

    2012-04-05

    Within the first two years of the LHC operation ALICE addressed the major soft physics observables in Pb-Pb and pp collisions. In this contribution we present a selection of these results, with the emphasis on the bulk particle production and on particle correlations. The latter subject is discussed in detail in several dedicated ALICE talks in the same workshop; the reader is referred to the corresponding contributions.

  2. Physical Development: Thinking Physically

    ERIC Educational Resources Information Center

    Strickland, Erik

    2005-01-01

    Children grow and develop physically according to their own experiences, characteristics, and abilities. Physical development is so important and the environment should allow each child to find her space in the sunshine. This can be done by: (1) creating the right outdoor environment; (2) allowing children time to use it; (3) encouraging movement…

  3. Physics in perspective, volume 1

    NASA Technical Reports Server (NTRS)

    1972-01-01

    Progress in physics and its subfields is presented and the contribution of physics is related to progress in other scientific disciplines and the manner in which these have been utilized by our civilization. The future course of endeavor in the various subfields of physics and the extent to which these will require resources of manpower, facilities, and funding are discussed. The rational responses of the total research effort in physics to alternative funding levels are assayed.

  4. Tank waste isotope contributions

    SciTech Connect

    VANKEUREN, J.C.

    1999-08-26

    This document presents the results of a calculation to determine the relative contribution of selected isotopes to the inhalation and ingestion doses for a postulated release of Hanford tank waste. The fraction of the dose due to {sup 90}Sr, {sup 90}Y, {sup 137}Cs and the alpha emitters for single shell solids and liquids, double shell solids and liquids, aging waste solids and liquids and all solids and liquids. An effective dose conversion factor was also calculated for the alpha emitters for each composite of the tank waste.

  5. Examining suicide: imaging's contributions.

    PubMed

    Church, Elizabeth J

    2015-01-01

    For many people, the death of hope leads inexorably to the conclusion that the only viable solution, the only way to put an end to unendurable pain, is suicide. What leads a person to commit this final, desperate act, and how might we predict, intervene, and prevent suicide? Health care workers, including radiologic technologists, can play an important role in detecting warning signs in patients and in better understanding what factors may lead to suicide. Although certain forms of suicide such as suicide bombings and assisted suicide are beyond its scope, this article explores medical imaging's contributions to the study of this phenomenon. PMID:25739108

  6. L'MISSION INFRA-ROUGE ET LE SCHMA DE NIVEAUX COMMUNS AUX PHOSPHORES ZnS, Cd S, ZnCd S, etc...

    E-print Network

    Paris-Sud XI, Université de

    673 L'ÉMISSION INFRA-ROUGE ET LE SCHÉMA DE NIVEAUX COMMUNS AUX PHOSPHORES ZnS, Cd S, ZnCd S, etc'émission de : A) ZnS-Cu (M 20) ; B) ZnS (50 %) Cd S (50 %) Cu (3 946) ; C) Cd S (4 625). FiG. 2. - Spectre d'excitation de : A) ZnS (4 626) 90 oR ; B) Cd S (4 625) 90 °K, , tation sont identiques aux bandes du spectre d

  7. Preliminary paleogeographic reconstruction of the Illinois basin during deposition of the Mississippian Aux Vases Formation: Implications for hydrocarbon recovery

    SciTech Connect

    Cole, R.D. (Illinois State Geological Survey, Champaign (United States))

    1991-03-01

    Extensive outcrop investigation and selective subsurface study allow definition of Illinois basin paleogeography during deposition of the Mississippian (Valmeyeran-Meramecian) Aux Vases Formation. The results incorporate an integrated approach utilizing field observations and petrographic analysis, wireline logs, subsurface maps, and cores. The Aux Vases Formation depositional system has been determined to be composed of subtidal to intertidal facies. Depositional facies in outcrop are based on rock body geometries, sedimentary structure assemblages, paleocurrent analysis, paleontology of body and trace fossils, facies relationships, and petrography. Depositional facies determined from subsurface data are based on correlation of lithologic interpretations from wireline logs, sand body geometries form isopach maps, and petrography. Specific depositional facies observed in outcrop and core and inferred from wireline logs and isopach maps are offshore bars and tidal channel complexes, extensive subtidal to lower intertidal, ripple-laminated, fine-grained quartzose sandstone. Carbonate facies occur as subtidal grainstones at or near the base of a sequence, or as high energy deposits which have been tidally reworked. This depositional system produces reservoir heterogeneities that complicate efficient hydrocarbon recovery. This diverse facies architecture is modified by tectonic and diagenetic overprinting, further segregating potential producing zones. To significantly improve recovery efficiency, predictions regarding compartmentalization can be used prior to designing a drilling program, an infill drilling program, or an application of enhanced recovery techniques.

  8. Stueckelberg and Molecular Physics

    NASA Astrophysics Data System (ADS)

    Lacki, Jan

    The first period of E. C. G. Stueckelberg's scientific career was marked by important contributions he made to molecular physics.1 After publishing his thesis in 1927 in Basel [1] Stueckelberg joined the prestigious Palmer Physical Laboratory in Princeton where he worked under the guidance of Karl Taylor Compton, brother of Arthur Holly Compton. Stueckelberg owed this position devoted several papers to problems of molecular physics. Stueckelberg had the benefit at Princeton of exchanges with other gifted members of the Palmer Physical Laboratory, Philip M. Morse and E. U. Condon among others.3 to a recommendation by A. Sommerfeld.2 In this stimulating environment, he devoted several papers to problems of molecular physics. Stueckelberg had the benefit at Princeton of exchanges with other gifted members of the Palmer Physical Laboratory, Philip M. Morse and E. U. Condon among others.3

  9. Stueckelberg and Molecular Physics

    Microsoft Academic Search

    Jan Lacki

    2009-01-01

    The first period of E. C. G. Stueckelberg’s scientific career was marked by important contributions he made to molecular physics.1 After publishing his thesis in 1927 in Basel [1] Stueckelberg joined the prestigious Palmer Physical Laboratory in Princeton\\u000a where he worked under the guidance of Karl Taylor Compton, brother of Arthur Holly Compton. Stueckelberg owed this position\\u000a devoted several papers

  10. Application of the New Decommissioning Regulation to the Nuclear Licensed Facilities (NLF) at Fontenay-aux-Roses's Nuclear Center (CEA)

    SciTech Connect

    Sauret, Josiane [Commissariat a l'Energie Atomique, Direction du Centre de Fontenay-aux-Roses, Cellule de Surete nucleaire, de controle des Matieres, de controle des Transports et de la Qualite, 18 route du Panorama BP 6 - 92265 Fontenay-aux-Roses Cedex (France); Piketty, Laurence; Jeanjacques, Michel [Commissariat a l'Energie Atomique, Direction de l'Energie Nucleaire, Direction deleguee des Activites Nucleaires de Saclay, Departement des Reacteurs et des Services Nucleaires, service d'Assainissement de Fontenay-aux-Roses, 18 route du Panorama BP 6 - 92265 Fontenay-aux-Roses Cedex (France)

    2008-01-15

    This abstract describes the application of the new decommissioning regulation on all Nuclear Licensed Facilities (NLF is to say INB in French) at Fontenay-aux-Roses's Center (CEA/FAR). The decommissioning process has been applied in six buildings which are out of the new nuclear perimeter proposed (buildings no 7, no 40, no 94, no 39, no 52/1 and no 32) and three buildings have been reorganized (no 54, no 91 and no 53 instead of no 40 and no 94) in order to increase the space for temporary nuclear waste disposal and to reduce the internal transports of nuclear waste on the site. The advantages are the safety and radioprotection improvements and a lower operating cost. A global safety file was written in 2002 and 2003 and was sent to the French Nuclear Authority on November 2003. The list of documents required is given in the paragraph I of this paper. The main goals were two ministerial decrees (one decree for each NLF) getting the authorization to modify the NLF perimeter and to carry out cleaning and dismantling activities leading to the whole decommissioning of all NLF. Some specific authorizations were necessary to carry out the dismantling program during the decommissioning procedure. They were delivered by the French Nuclear Safety Authority (FNSA) or with limited delegation by the General Executive Director (GED) on the CEA Fontenay-aux-Roses's Center, called internal authorization. Some partial dismantling or decontamination examples are given below: - evaporator for the radioactive liquid waste treatment station (building no 53): FNSA authorization: phase realised in 2002/2003. - disposal tanks for the radioactive liquid waste treatment station (building no 53) FNSA authorization: phase realised in 2004, - incinerator for the radioactive solid waste treatment station (building no 07): FNSA authorization: operation realised in 2004, - research equipments in the building no. 54 and building no. 91: internal authorization ; realised in 2005, - sample-taking to characterize solvent contained in one tank of Petrus installation (NLF 57, building 18) for radiological and chemical analysis needed to prepare the treatment and the evacuation of these wastes : internal authorization ; realised in june 2005. It was possible to plan the whole decommissioning process on the Nuclear Licensed Facilities of Fontenay-aux-Roses's Center (CEA/FAR) taking into account the French new regulation and to plan a coherent and continue program activity for the dismantling process. For the program not to be interrupted during the administrative process (2003-2006), specific authorisations have been delivered by the French Nuclear Safety Authority or by the General Executive Director (GED) on the CEA Fontenay-aux- Roses's Center (internal authorization). The time schedule to complete the entire program is until 2017 for NLF 'Procede' (NLF no 165) and until 2018 for NLF 'Support' (NLF no 166). Since 1999, an annual press meeting has been organised by the Fontenay-aux-Roses's Center Head Executive Manager.

  11. Students' Daily Physical Activity Behaviors: The Role of Quality Physical Education in a Comprehensive School Physical Activity Program

    ERIC Educational Resources Information Center

    Chen, Wiyun; Hypnar, Andrew J.; Mason, Steve A.; Zalmout, Sandy

    2014-01-01

    The purpose of this study was to examine the contribution of quality physical education (QPET) in a Comprehensive School Physical Activity Program (CSPAP) which is intended to promote physical activity (PA) behaviors in and outside of schools. Participants were nine elementary physical education teachers and their fourth- and fifth-grade students…

  12. Interstellar Dust: Contributed Papers

    NASA Technical Reports Server (NTRS)

    Tielens, Alexander G. G. M. (editor); Allamandola, Louis J. (editor)

    1989-01-01

    A coherent picture of the dust composition and its physical characteristics in the various phases of the interstellar medium was the central theme. Topics addressed included: dust in diffuse interstellar medium; overidentified infrared emission features; dust in dense clouds; dust in galaxies; optical properties of dust grains; interstellar dust models; interstellar dust and the solar system; dust formation and destruction; UV, visible, and IR observations of interstellar extinction; and quantum-statistical calculations of IR emission from highly vibrationally excited polycyclic aromatic hydrocarbon (PAH) molecules.

  13. Segr (Gabriel). Au nom du King. Elvis, les fans et l'ethnologue. Montreuil. Aux lieux d'tre (enqutes), 2007, 139 p., 12 .

    E-print Network

    Paris-Sud XI, Université de

    1 Segré (Gabriel). ­ Au nom du King. Elvis, les fans et l'ethnologue. Montreuil. Aux lieux d Au nom du king. Elvis, les fans et l'ethnologue, ce livre regroupe en dix-huit chapitres des notes d où l'ethnologue accompagne les admirateurs à Memphis dans le Tennessee, où est né et a vécu Elvis

  14. Sbastien BROCA, Du logiciel libre aux thories de l'intelligence collective , Revue TIC&Socit, Vol. 2, n 2, 2008, p. 81-101.

    E-print Network

    Paris-Sud XI, Université de

    espérées. En témoignent les occurrences nombreuses des références à la « démocratie open source », à « l'économie open source », voire à la « société open source ». Cette tendance à faire du mouvement du logicielSébastien BROCA, « Du logiciel libre aux théories de l'intelligence collective », Revue TIC

  15. OsIAA6, a member of the rice Aux/IAA gene family, is involved in drought tolerance and tiller outgrowth.

    PubMed

    Jung, Harin; Lee, Dong-Keun; Choi, Yang Do; Kim, Ju-Kon

    2015-07-01

    Auxin signaling is a fundamental part of many plant growth processes and stress responses and operates through Aux/IAA protein degradation and the transmission of the signal via auxin response factors (ARFs). A total of 31 Aux/IAA genes have been identified in rice (Oryza sativa), some of which are induced by drought stress. However, the mechanistic link between Aux/IAA expression and drought responses is not well understood. In this study we found that the rice Aux/IAA gene OsIAA6 is highly induced by drought stress and that its overexpression in transgenic rice improved drought tolerance, likely via the regulation of auxin biosynthesis genes. We observed that OsIAA6 was specifically expressed in the axillary meristem of the basal stem, which is the tissue that gives rise to tillers. A knock-down mutant of OsIAA6 showed abnormal tiller outgrowth, apparently due to the regulation of the auxin transporter OsPIN1 and the rice tillering inhibitor OsTB1. Our results confirm that the OsIAA6 gene is involved in drought stress responses and the control of tiller outgrowth. PMID:26025543

  16. Jean-Louis Tornatore et Sbastien Paul, Publics ou populations? La dmocratie culturelle en question, de l'utopie comusale aux espaces intermdiaires, in Olivier Donnat et Paul

    E-print Network

    Boyer, Edmond

    , de l'utOpie écomuséale aux « espaces intermédiaires» Initié par le secrétaire d'État au patrimoine et plus souvent laisse de côté et qui a trait, s'agissant de territoires en déshérence et d'architectures patrimoine dans la mise en culture des friches industrielles Si on suspend provisoirement - parce que

  17. tique sont polarises, rectilignement si l'mission a lieu perpendicu-lairement aux lignes de force, et circulairement si elle a lieu dans

    E-print Network

    Paris-Sud XI, Université de

    dans des bouchons métalliques, puis entre deux plaques d'aluminium parallèles reliées aux deux pôles d'une batterie d'accumulateurs et viennent enfin marquer leur arri- vée au fond du tube par une tache : la plaque supérieure communique avec un pôle d'une batterie d'accumulateurs, l'inférieure est reliée

  18. Disconnected contributions to hadronic structure

    E-print Network

    Sara Collins; Gunnar Bali; Andrea Nobile; Andreas Schafer; Yoshifumi Nakamura; James Zanotti

    2010-11-09

    We present an update of an on-going project to determine the disconnected contributions to hadronic structure, specifically, the scalar matrix element and the quark contribution to the spin of the nucleon.

  19. Semantic physical science

    PubMed Central

    2012-01-01

    The articles in this special issue arise from a workshop and symposium held in January 2012 (Semantic Physical Science’). We invited people who shared our vision for the potential of the web to support chemical and related subjects. Other than the initial invitations, we have not exercised any control over the content of the contributed articles. PMID:22856527

  20. Physical Education: Essential Issues

    ERIC Educational Resources Information Center

    Green, Ken, Ed.; Hardman, Ken, Ed.

    2005-01-01

    This book is aimed primarily at under and postgraduate students pursuing entire programmes or discrete courses and modules in the broad area of physical education and sport in schools. It consists of a collection of what is considered to be essential readings in the sense that they are contributions from eminent authors on a breadth of salient…

  1. Physics 232 Condensed Matter Physics

    E-print Network

    Young, A. Peter

    1 Physics 232 Condensed Matter Physics Instructor: Peter Young Office: 212 ISB Telephone: 459://apyoung.com/232 TOPICS This course on condensed matter physics will cover three areas: · magnetism, · optical physics such as Condensed Matter Physics by M. Mardar Solid State Physics by N. Ashroft and N. D. Mermin

  2. Iranian Women in Physics

    NASA Astrophysics Data System (ADS)

    Izadi, Dina; Seiedfadaei, Azita

    2009-04-01

    Women in the world have made great contributions to science. In Iran more than 60% of undergraduate university students are women, most in physics. Women's representation in postgraduate studies is lower; however, these numbers do not account for those who go to other countries to continue their studies, of which there are many. Alinoush Tarian, the oldest woman professor in Iran, the first Iranian woman professor of physics, and the founder of the first solar telescopic observatory in Iran, is one of them. There are some women physicists in Iran that are working as professors at the universities and famous institutes such as the Institute for Studies in Theoretical Physics and Mathematics. Iranians have always showed their talents and intelligence everywhere in the world, and nowadays, some of the women physics teachers in Iran are trying to teach physics with new methods to attract more students.

  3. Contributions of dental colour to the physical attractiveness stereotype.

    PubMed

    Montero, J; Gómez-Polo, C; Santos, J A; Portillo, M; Lorenzo, M C; Albaladejo, A

    2014-10-01

    Dental appearance may play a key role on the way we develop a first impression of another person. To test whether relatively minor changes in the lightness of tooth colour would influence the perceived social appeal (social, intellectual, psychological and relational abilities) of an unknown male and unknown female, this cross-sectional study was performed on 555 Spanish adults. The two major independent variables related to the photograph were tooth lightness (computer-derived), divided into three levels that included lightened teeth, natural teeth and darkened teeth, and the gender of the observed face. Moreover, six independent variables related to the observer were assessed (age, gender, educational level, place of residence, frequency of brushing and self-reported health status). The dependent variables were scored on five-point Likert scales designed to quantify four domains (social, intellectual, psychological and relationship competences) of the Social Appeal Scale (SAS). Tooth lightness influences the perception of social appeal in all dimensions, as darkened smiles received significantly poorer scores than natural-colour smiles, but these were also worse than lightened smiles. A logistic regression analysis revealed that the major predictor of social appeal was tooth lightness, and for each increment in lightness (from darkened to lightened smiles), the odds ratio (OR) of positive values being perceived increased significantly in all items (from 2·3 in Popularity to 6·9 in Happiness). A perceptible change in dental lightness is the strongest factor associated with the dental attractiveness stereotype, affecting significantly the 12 traits assessed, but mainly the Happiness, Social Relations and Academic Performance. PMID:24905467

  4. Econophysics: can statistical physics contribute to the science of economics?

    Microsoft Academic Search

    L. A. N. Amaral; P. Cizeau; P. Gopikrishnan; Y. Liu; M. Meyer; C.-K. Peng; H. E. Stanley

    1999-01-01

    We address a current question in econophysics: Are fluctuations in economic indices correlated? To this end, we analyze 1-minute data on a stock index, the Standard and Poor index of the 500 largest stocks. We extend the 6-year data base studied by Mantegna and Stanley by including the 13 years 1984–1996 inclusive, with a recording frequency of 15 seconds. The

  5. The contribution by Domenico Pacini to the Cosmic Ray Physics

    E-print Network

    Nicola Giglietto

    2011-01-02

    Between 1900 and 1913 several people were investigating about the unknown radiation, later identified as Cosmic Rays. Several experimentalist tried to identify the origin of this radiation and in particular Victor Franz Hess, Theodor Wulf and Domenico Pacini. Among them Domenico Pacini had a crucial role to address the answer to the origin of this radiation in the right way, and V.F.~Hess performed the complete set of measurements that definitively excluded an origin connected to the soil radioactive elements. However the most interesting and may be surprising point it that these pioneers defined 1 century ago the three experimental lines to study the Cosmic Rays: from space, on ground and underground and using only electroscopes. Domenico Pacini in particular may be considered the pioneer of the underground measurements on Cosmic Rays and Hess with his set of systematic measurements with balloon flights, originated the air-space studies on Cosmic Rays.

  6. The contribution by Domenico Pacini to the Cosmic Ray Physics

    E-print Network

    Giglietto, Nicola

    2011-01-01

    Between 1900 and 1913 several people were investigating about the unknown radiation, later identified as Cosmic Rays. Several experimentalist tried to identify the origin of this radiation and in particular Victor Franz Hess, Theodor Wulf and Domenico Pacini. Among them Domenico Pacini had a crucial role to address the answer to the origin of this radiation in the right way, and V.F.~Hess performed the complete set of measurements that definitively excluded an origin connected to the soil radioactive elements. However the most interesting and may be surprising point it that these pioneers defined 1 century ago the three experimental lines to study the Cosmic Rays: from space, on ground and underground and using only electroscopes. Domenico Pacini in particular may be considered the pioneer of the underground measurements on Cosmic Rays and Hess with his set of systematic measurements with balloon flights, originated the air-space studies on Cosmic Rays.

  7. PII S0360-3016(01)02691-8 PHYSICS CONTRIBUTION

    E-print Network

    Pouliot, Jean

    .D.,* JOYCELYN SPEIGHT, M.D., PH.D.,* JENNY HAI, PH.D., ERIC VIGNEAULT, M.D., THEODORE PHILLIPS, M.D.,* AND JEAN POULIOT, PH.D.* *Department of Radiation Oncology, University of California at San Francisco, San of the central cervical region, for the interstitial system. On the other hand, becau

  8. PII S0360-3016(02)03802-6 PHYSICS CONTRIBUTION

    E-print Network

    Pouliot, Jean

    POULIOT, PH.D. Department of Radiation Oncology, University of California San Francisco, San Francisco, CA to a variety of different patient anatomy types. Furthermore, because of this system, even large cervical

  9. PII S0360-3016(01)01667-4 PHYSICS CONTRIBUTION

    E-print Network

    Christensen, Gary E.

    , JAMES F. DEMPSEY, PH.D., FRITZ A. LERMA, PH.D., KYONGTAE T. BAE, M.D., MICHAEL W. VANNIER, M.D., AND JEFFREY F. WILLIAMSON, PH.D. Departments of *Electrical Engineering and Radiology, University of Iowa targets) of interest for radiation therapy of cervical cancers is achievable. © 2001 Elsevier Science Inc

  10. Some contributions of religion to mental and physical health

    Microsoft Academic Search

    Irving M. Rosen

    1974-01-01

    Summary A strong case can be developed for the inclusion of the clergyman as anintegral rather than peripheral part of the health team, a role he is far from fulfilling at this time. With the prevailing enormous amount of psychiatric and psychosomatic disorder for which we have no specific medical cures, we should turn for help to specialists in the

  11. EMSL Contribution Plan

    SciTech Connect

    Campbell, Allison A.

    2008-12-01

    This Contribution Plan is EMSL’s template for achieving our vision of simultaneous excellence in all aspects of our mission as a national scientific user facility. It reflects our understanding of the long-term stewardship we must work toward to meet the scientific challenges faced by the Department of Energy (DOE) and the nation. During the next decade, we will implement the strategies contained in this Plan, working closely with the scientific community, our advisory committees, DOE’s Office of Biological and Environmental Research, and other key stakeholders. This Plan is fully aligned with the strategic plans of DOE, its Office of Science, and the Pacific Northwest National Laboratory (PNNL). We recognize that shifts in science and technology, national priorities, and resources made available through the Federal budget process create planning uncertainties and, ultimately, a highly dynamic planning environment. Accordingly, this Plan should be viewed as a living document and we continually evaluate the changing needs and opportunities posed by our stakeholders (i.e., DOE, users, staff, advisory committees), work closely with them to understand and respond to those changes, and align our strategy accordingly. This Plan is organized around two sections. Section 1 describes our vision and four strategic outcomes: 1) Scientific Innovation, 2) Capabilities that Transform Science, 3) Outstanding Management and Operations, and Engaged and Proactive Users. These outcomes provide the framework for seven critical actions we must take during the next 3 to 5 years: 1) Establishing leadership in EMSL science themes, 2) building and deploying transformational capabilities, 3) integrating computation with experiment, 4) ensuring EMSL’s workforce meets the scientific challenges of the future, 5) creating partnerships, 6) attracting and engaging users in EMSL’s long-term strategy, and 7) building a research infrastructure that meets emerging scientific needs. Section 2 describes EMSL’s detailed business plan, including an analysis of opportunity, organizational investments, and actionable milestones.

  12. Reports | Physical Sciences in Oncology

    Cancer.gov

    Contributions from outside the field of cancer biology are the cornerstone of the Physical Sciences in Oncology initiative. In order to gather ideas and suggestions from the research community about the latest science and new opportunities, the NCI organizes Workshops and Think Tanks that bring together thought leaders from the fields of cancer biology, physics, chemistry, mathematics, modeling, engineering, and nanotechnology.

  13. Physical Changes

    NSDL National Science Digital Library

    Mr. Jolley

    2005-10-29

    After completing this tutorial you should be able to identify a physical change as well as describe what happens to a substance that undergoes a phase change. Physical changes cause a change in the physical properties of a substance without changing what the substance actually is. Physical Change Definition What are some common physical properties? Physical Properties You\\'ve already learned about chemical properties and changes. Now test your knowledge of physical and chemical properties. Physical Properties Quiz An important physical change is a phase change. Go to ...

  14. Séroprévalence et facteurs associés au VIH et aux hépatites virales B et C dans la ville de Bafoussam au Cameroun

    PubMed Central

    Mbopi-Keou, Francois-Xavier; Nkala, Isabelle Vanessa Monthe; Kalla, Ginette Claude Mireille; Nguefack-Tsague, Georges; Kamga, Hortense Gonsu; Noubom, Michel; Mvogo, Côme Ebana; Sosso, Maurice Aurelien

    2015-01-01

    Introduction L'objectif de ce travail était de déterminer la séroprévalence et les facteurs associés au VIH et aux hépatites virales B et C dans la ville de Bafoussam au Cameroun. Méthodes Il s'agissait d'une étude descriptive et analytique réalisée de février 2012 à Juin 2012 dans la ville de Bafoussam au Cameroun. Pour cette étude, nous avons obtenu une clairance éthique. Résultats Au total, 982 personnes ont été dépistées pour le VIH et les hépatites virales B et C. Les femmes représentaient 56,3% des personnes dépistées. La tranche d’âge la plus représentée était celle des 20 à 24 ans. L’âge médian était de 34,5 ans. Les prévalences du VIH, de l'AgHBs, et de l'Ac anti HCV étaient respectivement de 6,0%, 4,1%, et 0,4%. La prévalence du VIH était 2 fois plus élevée parmi les femmes que les hommes avec 8,1% contre 3,5% (p=0,01). Les prévalences les plus élevées ont été observées chez les personnes de 30 à 34 ans, 40 à 44 ans avec 15,0% et 11,5% (p=0,01), les personnes sans emploi avec 11,1% (p<0,001) et les personnes en union libre avec 17,9% (p=0,000). La prévalence du VIH n’était pas directement liée aux comportements et pratiques sexuels de la population de l’étude. On enregistrait une prévalence élevée de 29,3% chez les individus ayant déclaré avoir au moins une infection sexuellement transmissible (p=0,000). Conclusion Il apparait urgent de mettre en place des stratégies de prévention contre le VIH, les hépatites virales et les facteurs associés au Cameroun.

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

    NASA Astrophysics Data System (ADS)

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

    2012-04-01

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

  16. Corner contributions to holographic entanglement entropy

    E-print Network

    Bueno, Pablo

    2015-01-01

    The entanglement entropy of three-dimensional conformal field theories contains a universal contribution coming from corners in the entangling surface. We study these contributions in a holographic framework and, in particular, we consider the effects of higher curvature interactions in the bulk gravity theory. We find that for all of our holographic models, the corner contribution is only modified by an overall factor but the functional dependence on the opening angle is not modified by the new gravitational interactions. We also compare the dependence of the corner term on the new gravitational couplings to that for a number of other physical quantities, and we show that the ratio of the corner contribution over the central charge appearing in the two-point function of the stress tensor is a universal function for all of the holographic theories studied here. Comparing this holographic result to the analogous functions for free CFT's, we find fairly good agreement across the full range of the opening angle....

  17. Contribution a l’étude spectroscopique de verres dopés avec Er 3+ pour obtenir l’effet laser

    Microsoft Academic Search

    François Auzel

    1969-01-01

    \\u000a Sommaire  Après avoir rappelé les paramètres spectroscopiques qui interviennent dans l’effet laser, on donne pour l’ion Er3+ plongé dans une dizaine de verres différents, les résultats de mesures relatives aux spectres d’absorption et de fluorescence,\\u000a aux temps de relaxation et aux rendements quantiques.

  18. [Elementary particle physics. Annual report

    SciTech Connect

    Izen, J.M.; Lou, X.

    1998-12-31

    The BABAR construction phase is ending and first data is expected during May, 1999. During construction, UTD has developed analysis framework software, contributed to the BABAR Physics Book, assembled a first rate computing facility, and pioneered Internet-based video techniques for the collaboration. The authors are now defining the physics goals, and are participating in the formation physics analysis groups. They are starting to use their computing facility for BABAR production jobs.

  19. TUDE DE DISJONCTEURS A EXPLOSION DE FEUILLE ADAPTS AUX TRANSFERTS RAPIDES D'NERGIE

    E-print Network

    Paris-Sud XI, Université de

    exploding foils are studied with a view to transfer magnetic energy in a few 03BCs. One finds that the best the exploding foils. REVUE DE PHYSIQUE APPLIQUÉE TOME 13, SEPTEMBRE 1978, PAGE Classification Physics Abstracts. The reinsulation voltage and the résistance of the foil after the explosion are deter- mined as a function of time

  20. Michael Schmitt Physics at a -Collider 20-March-2001 1 Physics at a -Collider

    E-print Network

    Schmitt, Michael

    Michael Schmitt Physics at a -Collider 20-March-2001 1 ' & $ % Physics at a -Collider Michael's and top 5. SUSY, Exotica, and Xtra-Dim 6. Concluding Remarks #12; Michael Schmitt Physics at a -Collider circulate, and sensitivity is not masked by a large SM tree level contribution. #12; Michael Schmitt Physics

  1. Michael Schmitt Physics at a -Collider 15-March-2001 1 Physics at a -Collider

    E-print Network

    Schmitt, Michael

    Michael Schmitt Physics at a -Collider 15-March-2001 1 ' & $ % Physics at a -Collider Michael. Photon Structure 4. Physics with W's 5. SUSY, Exotica, and Xtra-Dim 6. Concluding Remarks #12; Michael contribution. #12; Michael Schmitt Physics at a -Collider 15-March-2001 3 ' & $ % #15; A -Collider

  2. Radiation Oncology Physics and Medical Physics Education

    NASA Astrophysics Data System (ADS)

    Bourland, Dan

    2011-10-01

    Medical physics, an applied field of physics, is the applications of physics in medicine. Medical physicists are essential professionals in contemporary healthcare, contributing primarily to the diagnosis and treatment of diseases through numerous inventions, advances, and improvements in medical imaging and cancer treatment. Clinical service, research, and teaching by medical physicists benefits thousands of patients and other individuals every day. This talk will cover three main topics. First, exciting current research and development areas in the medical physics sub-specialty of radiation oncology physics will be described, including advanced oncology imaging for treatment simulation, image-guided radiation therapy, and biologically-optimized radiation treatment. Challenges in patient safety in high-technology radiation treatments will be briefly reviewed. Second, the educational path to becoming a medical physicist will be reviewed, including undergraduate foundations, graduate training, residency, board certification, and career opportunities. Third, I will introduce the American Association of Physicists in Medicine (AAPM), which is the professional society that represents, advocates, and advances the field of medical physics (www.aapm.org).

  3. Experiments in Physics Physics 1291

    E-print Network

    Columbia University

    Experiments in Physics Physics 1291 General Physics I Lab Columbia University Department of Physics The laboratory experiments described in this manual are an important part of your physics course. Most of the experiments are designed to illustrate important concepts described in the lectures. Whenever possible

  4. Practical Physics

    NSDL National Science Digital Library

    2012-08-17

    The Nuffield Foundation was created in 1943 by William Morris, the founder of Morris Motors. He wanted to contribute to improvements in society, primarily the "advancement of social well-being." According to the site, he "emphasised the importance of education, training and research in achieving that goal." This website, created by the Foundation, is a logical extension of his work, containing practical activities designed for use in the classroom with students in high school and college. The activities here are arranged into a dozen topics, including Astronomy, Atoms and nuclei, and Physics applications. The activities here include "Hearing a laser beam," "What's the frequency?," and 75 others that use video clips, interactive graphics, and other visual materials to make these concepts and principles come alive. The Forces and Motion area is one of the best, as it is host to activities that really delve into the concepts of speed, velocity, and acceleration. Visitors can also use the search engine to look for specific items of interest.

  5. Physical Education

    NSDL National Science Digital Library

    Mr. Cherry

    2008-10-06

    Physical education is important to children and their developing bodies, both physical and mental. All children should get up off the couch and do some type of physical education. Students will understand and apply the health-enhancing benefits of physical activity and proper nutrition. Being healthy in physical activity and eating the right foods boost your ability to have fun and feel good about yourself. The President\\'s Council on Physical Fitness and Sports program is a great way to kids to get started at getting physically fit. They have listed their top 10 tips ...

  6. High Performance Computing contributions to

    E-print Network

    High Performance Computing contributions to DoD Mission Success 2002 #12;Approved for public/C nanotube in a field emitter configuration #12;HIGH PERFORMANCE COMPUTING contributions tocontributions ­ SECTION 1 INTRODUCTION 1 Introduction 3 Overview of the High Performance Computing Modernization Program 3

  7. Pragmatism's contributions to international relations

    Microsoft Academic Search

    John Kaag; Sarah Kreps

    2012-01-01

    This article examines the methodological and substantive contributions that pragmatism stands to make in the field of international relations (IR) theory. The methodological advantages that pragmatism offers have been described by many scholars in recent years, but the substantive contributions that classical American pragmatists (1870–1930) made to the study of international order have been largely overlooked. It suggests that a

  8. EUROPEAN LABORATORY FOR PARTICLE PHYSICS CERNEP/98093

    E-print Network

    EUROPEAN LABORATORY FOR PARTICLE PHYSICS CERN­EP/98­093 16 June 1998 Search for Higgs Bosons. (Submitted to Physics Letters B) #12; The OPAL Collaboration K. Ackerstaff 8 , G. Alexander 23 , J. AllisonV with the OPAL detector at LEP. No evidence for contributions from non­Standard Model physics processes

  9. Driving sound synthesis from a physics engine

    Microsoft Academic Search

    Eoin Mullan

    2009-01-01

    This paper describes the development of a framework that allows virtual object contact sounds to be synthesised in real time from information provided by a governing physics engine at physics refresh rate. The objects can be modified during run-time by their physical or perceptual parameters and both impact and continuous contact sounds can be created. The new contributions are features

  10. Physics and complexity

    PubMed Central

    Sherrington, David

    2010-01-01

    This paper is concerned with complex macroscopic behaviour arising in many-body systems through the combinations of competitive interactions and disorder, even with simple ingredients at the microscopic level. It attempts to indicate and illustrate the richness that has arisen, in conceptual understanding, in methodology and in application, across a large range of scientific disciplines, together with a hint of some of the further opportunities that remain to be tapped. In doing so, it takes the perspective of physics and tries to show, albeit rather briefly, how physics has contributed and been stimulated. PMID:20123753

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

    PubMed

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

    2012-09-01

    The phytohormone auxin is known to regulate several aspects of plant development, and Aux/IAA transcription factors play a pivotal role in auxin signaling. To extend our understanding of the multiple functions of Aux/IAAs further, the present study describes the functional characterization of Sl-IAA27, a member of the tomato Aux/IAA gene family. Sl-IAA27 displays a distinct behavior compared with most Aux/IAA genes regarding the regulation of its expression by auxin, and the Sl-IAA27-encoded protein harbors a unique motif of unknown function also present in Sl-IAA9 and remarkably conserved in monocot and dicot species. Tomato transgenic plants underexpressing the Sl-IAA27 gene revealed multiple phenotypes related to vegetative and reproductive growth. Silencing of Sl-IAA27 results in higher auxin sensitivity, altered root development and reduced Chl content in leaves. Both ovule and pollen display a dramatic loss of fertility in Sl-IAA27 down-regulated lines, and the internal anatomy of the flower and the fruit are modified, with an enlarged placenta in smaller fruits. In line with the reduced Chl content in Sl-IAA27 RNA interference (RNAi) leaves, genes involved in Chl synthesis display lower expression at the level of transcript accumulation. Even though Sl-IAA27 is closely related to Sl-IAA9 in terms of sequence homology and the encoded proteins share common structural features, the data indicate that the two genes regulate tomato fruit initiation and development in a distinct manner. PMID:22764281

  12. Conception, elaboration et mise a l'essai d'un simulateur interactif permettant une approche modelisante: Application aux lois de la genetique mendelienne

    Microsoft Academic Search

    Abdel-Halim Lasri

    1997-01-01

    Dans cette recherche-developpement, nous avons concu, developpe et mis a l'essai un simulateur interactif pour favoriser l'apprentissage des lois probabilistes impliqees dans la genetique mendelienne. Cet environnement informatise devra permettre aux etudiants de mener des experiences simulees, utilisant les statistiques et les probebilites comme outils mathematiques pour modeliser le phenomene de la transmission des caracteres hereditaires. L'approche didactique est essentiellement

  13. Un rve chimrique : la clture du dbat autour de l'enseignement oral de Le prsent article fait suite nos deux publications en rponse aux objections

    E-print Network

    Paris-Sud XI, Université de

    article fait suite à nos deux publications en réponse aux objections émises par L. Brisson1 et relatives »3 . Comme L. Brisson tente à présent, dans un article intitulé « Vingt ans après »4 , de clore un ultimes arguments invoqués par L. Brisson pour statuer sur leur degré de pertinence. a) L'oralité et l

  14. TUDE AUX RAYONS X, PAR DIFFRACTION NEUTRONIQUE ET PAR EFFET MSSBAUER DES SOLUTIONS SOLIDES Ba(FexGa1-x)2O4

    E-print Network

    Paris-Sud XI, Université de

    509 ÉTUDE AUX RAYONS X, PAR DIFFRACTION NEUTRONIQUE ET PAR EFFET MÖSSBAUER DES SOLUTIONS SOLIDES Ba Ba(FexGa1-x)2O4. Comme pour l'étude de la solution solide Ba(FexAl1-x)2O4, nous avons mis en évidence diffraction and Mössbauer effect the solid solu- tion Ba(FexGa1-x)2O4. As in the study of the solid solution

  15. Observation of linear to planar structural transition in sulfur-doped gold clusters: Au(x)S- (x = 2-5).

    PubMed

    Wen, Hui; Liu, Yi-Rong; Huang, Teng; Xu, Kang-Ming; Zhang, Wei-Jun; Huang, Wei; Wang, Lai-Sheng

    2013-05-01

    We report a joint experimental and theoretical study on the structures of a series of gold clusters doped with a sulfur atom, Au(x)S(-) (x = 2-5). Well-resolved photoelectron spectra are obtained and compared with theoretical results calculated using several density functional methods to elucidate the structures and bonding of Au(x)S(-) (x = 2-5). Au2S(-) is found to have an asymmetric linear global minimum structure with C(?v) symmetry, while the most stable structure of neutral Au2S is bent with C(2v) symmetry, reminiscent of H2S. Au3S(-) is found to have an asymmetric bent structure with an Au-S-Au-Au connectivity. Two isomers are observed experimentally to co-exist for Au4S(-): a symmetric bent 1D structure (C(2v)) and a 2D planar low-lying isomer (C(s)). The global minimum of Au5S(-) is found to be a highly stable planar triangular structure (C(2v)). Thus, a 1D-to-2D structural transition is observed in the Au(x)S(-) clusters as a function of x at x = 4. Molecular orbital analyses are carried out to obtain insight into the nature of the chemical bonding in the S-doped gold clusters. Strong covalent bonding between S and Au is found to be responsible for the 1D structures of Au(x)S(-) (x = 2-4), whereas delocalized Au-Au interactions favor the 2D planar structure for the larger Au5S(-) cluster. PMID:23656130

  16. THEORETICAL PHYSICS Faculty of Physics

    E-print Network

    Pachucki, Krzysztof

    INSTITUTE OF THEORETICAL PHYSICS Faculty of Physics Warsaw University 1998-1999 Warsaw 2000 #12;INSTITUTE OF THEORETICAL PHYSICS Address: Hoza 69, PL-00 681 Warsaw, Poland Phone: (+48 22) 628 33 96 Fax of Theoretical Physics, organize at alternate years a symposium in which their main research topics

  17. The PB1 Domain in Auxin Response Factor and Aux/IAA Proteins: A Versatile Protein Interaction Module in the Auxin Response[OPEN

    PubMed Central

    2015-01-01

    An integral part of auxin-regulated gene expression involves the interplay of two types of transcription factors, the DNA binding auxin response factor (ARF) activators and the interacting auxin/indole acetic acid (Aux/IAA) repressors. Insight into the mechanism of how these transcription factors interact with one another has recently been revealed from crystallographic information on ARF5 and ARF7 C-terminal domains (i.e., a protein-protein interaction domain referred to as domain III/IV that is related to domain III/IV in Aux/IAA proteins). Three-dimensional structures showed that this domain in ARF5 and ARF7 conforms to a well-known PB1 (Phox and Bem1) domain that confers protein-protein interactions with other PB1 domain proteins through electrostatic contacts. Experiments verifying the importance of charged amino acids in conferring ARF and Aux/IAA interactions have confirmed the PB1 domain structure. Some in planta experiments designed to test the validity of PB1 interactions in the auxin response have led to updated models for auxin-regulated gene expression and raised many questions that will require further investigation. In addition to the PB1 domain, a second protein interaction module that functions in ARF-ARF dimerization and facilitates DNA binding has recently been revealed from crystallography studies on the ARF1 and ARF5 DNA binding domains. PMID:25604444

  18. Factors contributing to hypoxia in rivers, lakes, and streams

    Microsoft Academic Search

    Michael A. Mallin; Virginia L. Johnson; Scott H. Ensign; Tara A. MacPherson

    2006-01-01

    We investigated physical, chemical, and biological variables contributing to biochemical oxygen demand (BOD) in 17 North Carolina lotic and lentic water bodies affected by mild to severe hypoxia. Phytoplankton production created the dominant reservoir of labile carbon driving BOD, and subsequent hypoxia, in a Piedmont river subject to algal blooms, three urban streams, a set of anthropogenically affected tidal creeks,

  19. Couplage neutronique-thermohydraulique arthur-donjon avec les conditions aux collecteurs

    NASA Astrophysics Data System (ADS)

    Landry, Alexandre

    First, the ARTHUR code of thermal-hydraulic encloses four initial elements, which are also initial conditions: channel outlet pressure, inlet mass flux, inlet coolant temperature and reactor geometry. The calculations using conservation laws and the modeling correlation for the CANDU-6 thermal-hydraulic phenomenon are based on the drift-flux model. It's a middle point between a simple and fast model and a complex and slow calculation. The couple ARTHUR-DONJON is a good tool since 2008. But, there is a place for improvements. For thermal-hydraulics, inlet pressure has to be added as initial condition. This will influence mass flux and coolant temperature. A jacobian method for mass flux correction will be developed and implemented to satisfy inlet and outlet pressures initial conditions. We have to use jacobians to find a relation between initials conditions and systems inputs. The jacobians is used to transform the system between state 1 and state 2. In reactor physics, IQS unit in DONJON code will be substituted by KINSOL unit for kinetics. For cross sections calculations in AFM unit, it will be corrected for a better power evolution. Thermal-hydraulics changes will involve some reactor physics changes and then, it will give a better simulation system. The results are excellent with the new ARTHUR-DONJON. We are going from 4 to 6 % of error to 0,1 % with power plant essay measurements. We are going from 0,5 second in one week calculations to 1,0 second in two or three days of calculations. Our results are not divergent with power plant essay measurements and they're now near those observed for a real nuclear reactor.

  20. Physics Notes.

    ERIC Educational Resources Information Center

    School Science Review, 1980

    1980-01-01

    Presents nine physics notes for British secondary school teachers. Some of these notes are: (1) speed of sound in a steel rod; (2) physics extracts-part four (1978); and (3) a graphical approach to acceleration. (HM)

  1. Physics Education Technology: Interactive Physics Simulations

    NSDL National Science Digital Library

    This collection of interactive, research-based simulations introduces students to basic physical phenomena. The simulations cover a variety of topics: motion, sound, and waves; light and radiation; electricity, magnets, and circuits; chemistry; and many others. The simulations can be run from the web site or downloaded for later use, and are accompanied by a collection of lessons and activities that use them. There is also information on how to download and run the simulations and links to publications about the project and studies of the effectiveness of the simulations in teaching. Educators are also invited to contribute ideas for lesson or activities that use the simulations.

  2. Sports Physicals

    MedlinePLUS

    ... stronger athlete. Back Continue When & Where Should I Go for a Sports Physical? Some people go to their own doctor for a sports physical; ... one at school. During school physicals, you may go to half a dozen or so "stations" set ...

  3. The Physics of Hang Gliding

    NASA Astrophysics Data System (ADS)

    Hewett, Lionel D.

    2008-03-01

    Dr. Hewett has received both national and international awards from the hang gliding community for his contributions to the safety of towing hang gliders. These contributions were a consequence of his applying his knowledge of physics to the sport of hang gliding. This lecture illustrates how these and other applications of the fundamental principles of physics have influenced the historical evolutions of hang gliding and paragliding from the earliest flights of Otto Lilienthal in 1891 through the more recent record breaking flights of more than 430 miles from Zapata Texas.

  4. Linear electronic transport in dense plasmas. II. Finite degeneracy contributions

    NASA Astrophysics Data System (ADS)

    Léger, D.; Deutsch, C.

    1991-06-01

    The formalism described in the first paper in this series is hereafter specialized to a thorough investigation of finite degeneracy contributions to thermoelectronic and mechanical transport coefficients, conveniently expressed as reduced quantities. Temperature corrections are systematically discussed through the analytical properties of the jellium dielectric function. The Thomas-Fermi one appears as a paradigm of regular behavior at q=2k_F while the Lindhard and its T-dependent extension head a singular class characterized by diverging derivatives. Specific methods are developed for these important cases. Results are presented in terms of analytic expansions in the degeneracy parameter ?, and exact expressions for the above-mentioned corrections are derived up to order ?2. Finally we display a number of numerical results pertaining to fully ionized proton-helium binary mixtures of Astrophysical interest. The connection of the present formalism and its numerical outputs with other previous treatments is also carefully examined. Le formalisme exposé et détaillé dans le premier article de cette série est ici appliqué à la détermination des contributions de dégénérescence partielle aux coefficients de transport thermoélectroniques et mécanique (viscosité), coefficients préalablement exprimés sous forme d'expressions réduites. Les corrections de température finie sont systématiquement analysées en relation avec les propriétés analytiques de la fonction diélectrique du jellium. Alors que celle de Thomas-Fermi fournit l'exemple type de fonction parfaitement régulière en q=2k_F, celle de Lindhard et sa généralisation à T finie sont au contraire caractérisées par des dérivées divergentes en ce point. Des méthodes spécifiques sont développées pour traiter correctement ces cas importants. Nos résultats sont présentés sous forme de développements analytiques en puissance du paramètre de dégénérescence ?, et des expressions exactes pour les corrections mentionnées sont dérivées jusqu'à l'odre ?2. Leur traduction numérique est finalement appliquée au cas des mélanges binaires proton-helium complètement ionisés, d'intérêt Astrophysique. Le lien entre le présent formalisme, et notamment ses implications numériques, et d'autres résultats antérieurs, fait aussi l'objet d'un examen attentif.

  5. Contributions from the CYGNUS/Milagro Collaboration

    SciTech Connect

    Allen, G.E.; Chang, C.Y.; Chen, M.L.

    1995-09-01

    This document consists of eleven reports contributed to the XXIV International Cosmic Ray Conference (Rome, Italy, August 28--September 8, 1995) from the CYGNUS/Milagro Collaboration: ``Search for Ultra-High-Energy Radiation from Gamma-Ray Bursts``, ``Gamma-Ray Bursts: Detection and Distance Estimates with Milagro``, ``Searching for Gamma-Ray Bursts with Water-Cerenkov-Detector Single-Particle Rates``, ``The Milagro Detector``, ``The Milagro Data Acquisition System``, ``Source Searches Using the CYGNUS Water-Cerenkov Array``, ``Search for UHE Emission from Supernova Remnants``, ``Solar Physics with the Milagro Telescope``, ``An Experiment to Detect Correlations Between Cerenkov and Muon Lateral Distributions in EAS``, ``A Study of Large-Zenith-Angle Air Showers with the CYGNUS Experiment``, and ``Mass Resolution of Ground Based Air Shower Experiments in the 10 to 10000 TeV range.``

  6. EDITORIAL: Physics competitions Physics competitions

    Microsoft Academic Search

    H. Jordens; L. Mathelitsch

    2009-01-01

    1. Physics competitions: aims and realizations One aim of physics competitions is to increase the interest of young students, primarily at upper secondary level, to physics and natural sciences in general. A competition has motivational aspects known usually from sports events or games---comparing one's own ability with others, of course with the desire to be better and to win. If

  7. Dietary and Physical Activity Behaviors of Middle School Youth: The Youth Physical Activity and Nutrition Survey

    ERIC Educational Resources Information Center

    Zapata, Lauren B.; Bryant, Carol A.; McDermott, Robert J.; Hefelfinger, Jennie A.

    2008-01-01

    Background: Obesity has become a national epidemic among youth. Declining physical activity and poor nutrition contribute to this epidemic. The purpose of this study was to obtain data on middle school students' physical activity and nutrition knowledge and practices. Methods: The Youth Physical Activity and Nutrition Survey was developed and…

  8. The Physics of Chromospheric Plasmas

    Microsoft Academic Search

    Petr Heinzel; I. Dorotovic; R. J. Rutten

    2007-01-01

    Abstract. The EC-FP5 European Solar Magnetism Network (ESMN) was terminated during this conference. Together with its FP4 predecessor, the European Solar Magnetometry Network (ESMN), it funded 22 postdoc and 9 graduate-student appointments at nine solar physics groups in Western Europe, it enhanced Europe-wide collaboration in solar physics, and it contributed to the integration of East-European groups in West-European enterprises. Its

  9. Mathematization in introductory physics

    NASA Astrophysics Data System (ADS)

    Brahmia, Suzanne M.

    Mathematization is central to STEM disciplines as a cornerstone of the quantitative reasoning that characterizes these fields. Introductory physics is required for most STEM majors in part so that students develop expert-like mathematization. This dissertation describes coordinated research and curriculum development for strengthening mathematization in introductory physics; it blends scholarship in physics and mathematics education in the form of three papers. The first paper explores mathematization in the context of physics, and makes an original contribution to the measurement of physics students' struggle to mathematize. Instructors naturally assume students have a conceptual mastery of algebra before embarking on a college physics course because these students are enrolled in math courses beyond algebra. This paper provides evidence that refutes the validity of this assumption and categorizes some of the barriers students commonly encounter with quantification and representing ideas symbolically. The second paper develops a model of instruction that can help students progress from their starting points to their instructor's desired endpoints. Instructors recognize that the introductory physics course introduces new ideas at an astonishing rate. More than most physicists realize, however, the way that mathematics is used in the course is foreign to a large portion of class. This paper puts forth an instructional model that can move all students toward better quantitative and physical reasoning, despite the substantial variability of those students' initial states. The third paper describes the design and testing of curricular materials that foster mathematical creativity to prepare students to better understand physics reasoning. Few students enter introductory physics with experience generating equations in response to specific challenges involving unfamiliar quantities and units, yet this generative use of mathematics is typical of the thinking involved in doing physics. It contrasts with their more common experience with mathematics as the practice of specified procedures to improve efficiency. This paper describes new curricular materials based on invention instruction provide students with opportunities to generate mathematical relationships in physics, and the paper presents preliminary evidence of the effectiveness of this method with mathematically underprepared engineering students.

  10. The Physics Front: Resources for High School Physics & Physical Science Teachers

    NASA Astrophysics Data System (ADS)

    Ezrailson, Cathy M.

    2006-12-01

    The overarching goal of the Physics Front, (part of ComPADRE -Physics and Astronomy digital library) is to provide enhanced accessibility to quality physics teaching resources for all pre-college teachers of physics and the physical sciences with special materials for new and “cross-over” teachers. Some highlights/features of the site are: • A collection of physics-related topics with units of instruction including content, tutorials, labs and reference materials. • Descriptions of some PTRA manuals with example activities. • A “Welcome to the Profession” statement from the New Physics Teacher Manual. • Classroom techniques and best practices. • Simulations and images to enhance instruction for students. • Special features and help for the new physics teacher • Discussion Forums • Filing cabinet for sharing and organizing teaching materials Advantages of using The Physics Front: • Peer -reviewed materials • Connections with other physics teachers nation/worldwide • Content and pedagogy support • Venue for sharing, accessing and archiving exemplary teacher-designed materials • Opportunity to contribute to a dynamic and growing online physics teacher community

  11. What can I do with a degree in Physical Education?

    E-print Network

    Hickman, Mark

    government, the health and fitness industry, and sport coaching. A Physical Education degree is usefulWhat can I do with a degree in Physical Education? Education Planning your career Choosing a career.canterbury.ac.nz/liaison/best_prep.shtml What is Physical Education? Physical education focuses on the study of movement and its contribution

  12. Rock mechanics contributions from defense programs

    SciTech Connect

    Heuze, F.E.

    1992-02-01

    An attempt is made at illustrating the many contributions to rock mechanics from US defense programs, over the past 30-plus years. Large advances have been achieved in the technology-base area covering instrumentation, material properties, physical modeling, constitutive relations and numerical simulations. In the applications field, much progress has been made in understanding and being able to predict rock mass behavior related to underground explosions, cratering, projectile penetration, and defense nuclear waste storage. All these activities stand on their own merit as benefits to national security. But their impact is even broader, because they have found widespread applications in the non-defense sector; to name a few: the prediction of the response of underground structures to major earthquakes, the physics of the earth`s interior at great depths, instrumentation for monitoring mine blasting, thermo-mechanical instrumentation useful for civilian nuclear waste repositories, dynamic properties of earthquake faults, and transient large-strain numerical modeling of geological processes, such as diapirism. There is not pretense that this summary is exhaustive. It is meant to highlight success stories representative of DOE and DOD geotechnical activities, and to point to remaining challenges.

  13. Neutrino physics

    SciTech Connect

    Harris, Deborah A.; /Fermilab

    2008-09-01

    The field of neutrino physics has expanded greatly in recent years with the discovery that neutrinos change flavor and therefore have mass. Although there are many neutrino physics results since the last DIS workshop, these proceedings concentrate on recent neutrino physics results that either add to or depend on the understanding of Deep Inelastic Scattering. They also describe the short and longer term future of neutrino DIS experiments.

  14. Physics 2000

    NSDL National Science Digital Library

    Physics 2000 relies heavily on the use of interactive applets. These are different from the typical animations you see on the Internet because you can actually interact with them. This is an older site from the Center for Integrated Plasma Studies at the University of Colorado, Boulder. It uses cartoon characters to explain physics concepts. A downloadable version of Physics 2000 is available by contacting the Center for Integrated Plasma Studies via postal mail.

  15. Automatic defects classification — a contribution

    Microsoft Academic Search

    J. B Santos; F Perdigão

    2001-01-01

    The objective of this work is to provide a contribution to defect classification. More precisely, we try to prove that it is possible to identify and classify defects of different types using the pulse-echo technique. The classification process makes use of the time and frequency domain responses of the ultrasonic echo signals acquired from different specimens simulating defects with three

  16. Assessing Contributions to Group Assignments

    ERIC Educational Resources Information Center

    Johnston, Lucy; Miles, Lynden

    2004-01-01

    We report the use of a combination of self- and peer-assessment in an undergraduate social psychology laboratory course. Students worked in small groups on a self-directed empirical project that they each wrote up independently as a laboratory report. Marks for the written assignment were moderated by a contribution index measure based on the…

  17. Contributing factors to depressed mood in Multiple Sclerosis William D. Vossa

    E-print Network

    Dennis, Nancy

    Contributing factors to depressed mood in Multiple Sclerosis William D. Vossa , Peter A. Arnettb, CA: Academic Press.] to Multiple Sclerosis (MS), it was hypothesized that physical disability Ltd. Keywords: Neuropsychology; Multiple sclerosis; Depression Multiple Sclerosis (MS) has been

  18. Processed foods: contributions to nutrition.

    PubMed

    Weaver, Connie M; Dwyer, Johanna; Fulgoni, Victor L; King, Janet C; Leveille, Gilbert A; MacDonald, Ruth S; Ordovas, Jose; Schnakenberg, David

    2014-06-01

    Both fresh and processed foods make up vital parts of the food supply. Processed food contributes to both food security (ensuring that sufficient food is available) and nutrition security (ensuring that food quality meets human nutrient needs). This ASN scientific statement focuses on one aspect of processed foods: their nutritional impacts. Specifically, this scientific statement 1) provides an introduction to how processed foods contribute to the health of populations, 2) analyzes the contribution of processed foods to "nutrients to encourage" and "constituents to limit" in the American diet as recommended by the Dietary Guidelines for Americans, 3) identifies the responsibilities of various stakeholders in improving the American diet, and 4) reviews emerging technologies and the research needed for a better understanding of the role of processed foods in a healthy diet. Analyses of the NHANES 2003-2008 show that processed foods provide both nutrients to encourage and constituents to limit as specified in the 2010 Dietary Guidelines for Americans. Of the nutrients to encourage, processed foods contributed 55% of dietary fiber, 48% of calcium, 43% of potassium, 34% of vitamin D, 64% of iron, 65% of folate, and 46% of vitamin B-12. Of the constituents to limit, processed foods contributed 57% of energy, 52% of saturated fat, 75% of added sugars, and 57% of sodium. Diets are more likely to meet food guidance recommendations if nutrient-dense foods, either processed or not, are selected. Nutrition and food science professionals, the food industry, and other stakeholders can help to improve the diets of Americans by providing a nutritious food supply that is safe, enjoyable, affordable, and sustainable by communicating effectively and accurately with each other and by working together to improve the overall knowledge of consumers. PMID:24760975

  19. Attraction to Physical Activity in Urban Schoolchildren: Parental Socialization and Gender Influences.

    ERIC Educational Resources Information Center

    Brustad, Robert J.

    1996-01-01

    This study examined the contribution of parent socialization and gender to urban elementary students' (N=107) interest in physical activity. Questionnaires indicated significant relationships between parental socialization processes and children's perceived physical competence and attraction to physical activity. (SM)

  20. Lambda^2-contribution to the condensate in lattice gauge theory

    E-print Network

    G. Burgio; F. Di Renzo; G. Marchesini; E. Onofri

    1997-06-02

    We present some evidence that in Lattice Gauge Theory the condensate contains a non-perturbative contribution proportional to $\\Lambda^2$, the square of the physical scale. This result is based on an analysis of the Wilson loop plaquette expectation from Monte Carlo simulations and its perturbative expansion computed to eight loops. The analysis is not fully conclusive since the calculations are done on a finite lattice and one needs an extrapolation to infinite lattice. It has been recently suggested that in the gluon condensate a $\\Lambda^2$-contribution could be present coming from the large momentum behaviour of the running coupling and not connected to operator product expansion.

  1. Contributions of chemistry in early day Los Alamos

    SciTech Connect

    Penneman, R.A.; Meade, R.A.

    1990-01-01

    During 1943--1945, the premier physics laboratory in the world was at Los Alamos, but chemistry contributions were vital. Major chemical impacts on the success of the Los Alamos wartime mission included electrochemistry, which found the true melting point of plutonium metal to be hundreds of degrees lower than anticipated. This discovery had profound simplifying effects regarding crucibles to contain molten plutonium and on its production. Other significant chemical contributions involved constant purification of plutonium for reuse, producing carrier-free gamma sources at unprecedented kilo-curie levels, and high polonium work. 8 refs.

  2. Multiple AUX/IAA-ARF modules regulate lateral root formation: the role of Arabidopsis SHY2/IAA3-mediated auxin signalling.

    PubMed

    Goh, Tatsuaki; Kasahara, Hiroyuki; Mimura, Tetsuro; Kamiya, Yuji; Fukaki, Hidehiro

    2012-06-01

    In Arabidopsis thaliana, lateral root (LR) formation is regulated by multiple auxin/indole-3-acetic acid (Aux/IAA)-AUXIN RESPONSE FACTOR (ARF) modules: (i) the IAA28-ARFs module regulates LR founder cell specification; (ii) the SOLITARY-ROOT (SLR)/IAA14-ARF7-ARF19 module regulates nuclear migration and asymmetric cell divisions of the LR founder cells for LR initiation; and (iii) the BODENLOS/IAA12-MONOPTEROS/ARF5 module also regulates LR initiation and organogenesis. The number of Aux/IAA-ARF modules involved in LR formation remains unknown. In this study, we isolated the shy2-101 mutant, a gain-of-function allele of short hypocotyl2/suppressor of hy2 (shy2)/iaa3 in the Columbia accession. We demonstrated that the shy2-101 mutation not only strongly inhibits LR primordium development and emergence but also significantly increases the number of LR initiation sites with the activation of LATERAL ORGAN BOUNDARIES-DOMAIN16/ASYMMETRIC LEAVES2-LIKE18, a target gene of the SLR/IAA14-ARF7-ARF19 module. Genetic analysis revealed that enhanced LR initiation in shy2-101 depended on the SLR/IAA14-ARF7-ARF19 module. We also showed that the shy2 roots contain higher levels of endogenous IAA. These observations indicate that the SHY2/IAA3-ARF-signalling module regulates not only LR primordium development and emergence after SLR/IAA14-ARF7-ARF19 module-dependent LR initiation but also inhibits LR initiation by affecting auxin homeostasis, suggesting that multiple Aux/IAA-ARF modules cooperatively regulate the developmental steps during LR formation. PMID:22527388

  3. Transaction Logs and Search Patterns on a Children's Portal \\/ Journaux de transaction et modes de recherche sur un portail web destiné aux enfants

    Microsoft Academic Search

    Jamshid Beheshti; Andrew Large; Marni Tam

    2010-01-01

    RésuméRésumé Les journaux de transactions d'un portail web destiné aux enfants ont été analysés dans le but de dégager les modes de recherche lorsque les utilisateurs du système disposent de quatre choix de recherche. Les résultats montrent que la taxinomie des sujets et les options de recherche alphabétique comptent pour 83 pour cent de toutes les recherches, ce qui indique

  4. Transaction Logs and Search Patterns on a Children's Portal \\/ Journaux de transaction et modes de recherche sur un portail web destiné aux enfants

    Microsoft Academic Search

    Jamshid Beheshti; Andrew Large; Marni Tam

    2010-01-01

    Résumé:Les journaux de transactions d'un portail web destiné aux enfants ont été analysés dans le but de dégager les modes de recherche lorsque les utilisateurs du système disposent de quatre choix de recherche. Les résultats montrent que la taxinomie des sujets et les options de recherche alphabétique comptent pour 83 pour cent de toutes les recherches, ce qui indique une

  5. Majorana and Condensed Matter Physics

    E-print Network

    Frank Wilczek

    2014-04-02

    Ettore Majorana contributed several ideas that have had significant, lasting impact in condensed matter physics, broadly construed. Here I will discuss, from a modern perspective, four important topics that have deep roots in Majorana's work: 1. Spin Response and Universal Connection; 2. Level Crossing and Generalized Laplace Transform; 3. Majorana Fermions, From Neutrinos to Electrons; 4. Majorinos and Emergent Symmetry.

  6. Unparticle Physics

    Microsoft Academic Search

    Howard Georgi

    2007-01-01

    I discuss some simple aspects of the low-energy physics of a nontrivial scale invariant sector of an effective field theory---physics that cannot be described in terms of particles. I argue that it is important to take seriously the possibility that the unparticle stuff described by such a theory might actually exist in our world. I suggest a scenario in which

  7. Thermal Physics

    Microsoft Academic Search

    R Kutner

    2000-01-01

    I read this book with great interest since so many standard and good textbooks already exist within statistical and thermal physics that I expected to find an answer to the main question: why should one more book be published and for whom? This branch of knowledge (particularly, the physics at thermal equilibrium which constitutes the main part of this book)

  8. Physical Therapists

    MedlinePLUS

    ... lot of time interacting with patients, they should enjoy working with people. They must be able to explain treatment programs, motivate patients, and listen to patients’ concerns to provide effective therapy. Physical stamina. Physical therapists spend much of their time on their feet, moving as ...

  9. Physics Quizzes and Physics Trivia

    NSDL National Science Digital Library

    On this site, visitors can access thirty-five quizzes, each with five to ten questions, covering various aspects of physics. The topics here include: special relativity, Ohmâ??s lore, orbital mechanics, inside the atom, types of energy storage, and subatomic and modern physics. For accessibility, each quiz can be played in either Flash or html format. Also, each questionâ??s answer contains a brief explanation why it is the correct answer to help visitors more thoroughly understand the physics principle being tested. This is a useful resource for students to refresh or enhance their knowledge of physics, or for educators to use in the classroom to test studentsâ?? understanding.

  10. Parton distributions incorporating QED contributions

    Microsoft Academic Search

    A. D. Martin; R. G. Roberts; W. J. Stirling; R. S. Thorne

    2005-01-01

    We perform a global parton analysis of deep inelastic and related hard-scattering data, including ${{\\\\mathcal{O}}}(\\\\alpha_{\\\\rm QED})$ corrections to the parton evolution. Although the quality of the fit is essentially unchanged, there are two important physical consequences. First, the different DGLAP evolution of u and d type quarks introduces isospin violation, i.e. $u^p \\\

  11. 22 CFR 130.6 - Political contribution.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ...COMMISSIONS § 130.6 Political contribution. Political contribution means any loan, gift, donation...direction of, any foreign candidate, committee, political party, political faction, or government or governmental...

  12. 22 CFR 130.6 - Political contribution.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ...COMMISSIONS § 130.6 Political contribution. Political contribution means any loan, gift, donation...direction of, any foreign candidate, committee, political party, political faction, or government or governmental...

  13. 22 CFR 130.6 - Political contribution.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ...COMMISSIONS § 130.6 Political contribution. Political contribution means any loan, gift, donation...direction of, any foreign candidate, committee, political party, political faction, or government or governmental...

  14. 22 CFR 130.6 - Political contribution.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ...COMMISSIONS § 130.6 Political contribution. Political contribution means any loan, gift, donation...direction of, any foreign candidate, committee, political party, political faction, or government or governmental...

  15. 22 CFR 130.6 - Political contribution.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ...COMMISSIONS § 130.6 Political contribution. Political contribution means any loan, gift, donation...direction of, any foreign candidate, committee, political party, political faction, or government or governmental...

  16. Discrete contribution to {sup '}J\\/+

    Microsoft Academic Search

    He Zhiguo; Joan Soto; Lu Xiaorui; Zheng Yangheng

    2011-01-01

    The decay mode (2S)J\\/+ is proposed in order to experimentally identify the effects of the coupling of charmonium states to the continuum D{bar D} states. To have a better understanding of such a two-photon decay process, in this work we restrict ourselves to investigate the contribution of the discrete part, in which the photons are mainly produced via the intermediate

  17. Physics research needs for ITER

    SciTech Connect

    Sauthoff, N.R.

    1995-07-01

    Design of ITER entails the application of physics design tools that have been validated against the world-wide data base of fusion research. In many cases, these tools do not yet exist and must be developed as part of the ITER physics program. ITER`s considerable increases in power and size demand significant extrapolations from the current data base; in several cases, new physical effects are projected to dominate the behavior of the ITER plasma. This paper focuses on those design tools and data that have been identified by the ITER team and are not yet available; these needs serve as the basis for the ITER Physics Research Needs, which have been developed jointly by the ITER Physics Expert Groups and the ITER design team. Development of the tools and the supporting data base is an on-going activity that constitutes a significant opportunity for contributions to the ITER program by fusion research programs world-wide.

  18. How Can Sport Biomechanics Contribute to the Advance of World Record and Best Athletic Performance?

    ERIC Educational Resources Information Center

    Li, Li

    2012-01-01

    Modern history has evidence that sport biomechanics provide valuable contribution in the pursuit of "faster, higher, and stronger." In this article, the contribution of sport biomechanics to the Olympic Games has been divided into three different categories: improve the physical capacity of the athletes, develop innovative techniques in a given…

  19. Women in Physics in Fermi's Time

    Microsoft Academic Search

    Nina Byers

    2003-01-01

    Enrico Fermi lived from 1901 to 1954, a period of great progress in physics and a period in which opportunities for women to study and work in institutions of higher learning increased significantly in Europe and North America. Though there are a few examples of women who made important contributions to physics in the 18th century such as Emilie du

  20. Integrating Physical Activity into Academic Pursuits

    ERIC Educational Resources Information Center

    Gaus, Mark D.; Simpson, Cynthia G.

    2009-01-01

    Children of today may be the first generation in the United States in more than 200 years to have a life expectancy shorter than their parents. Low levels of fitness caused by physical inactivity and poor nutritional habits of many of today's youth may be a contributing factor. Combating low fitness levels with physical activity is of utmost…

  1. Physical Education Curriculum Reform in Finland

    ERIC Educational Resources Information Center

    Yli-Piipari, Sami

    2014-01-01

    The Finnish education system has received worldwide attention due to the top academic performance of Finnish school students. Physical education, as an integral part of the Finnish education curriculum, potentially contributes to the overall success. The purpose of this article is to summarize Finnish physical education reform during the past…

  2. Effective Field Theory in Nuclear Physics

    E-print Network

    Martin J. Savage; Barry R. Holstein

    2000-12-15

    The Electromagnetic and Hadronic Physics sub-community of nuclear physics held a town hall meeting at Jefferson Lab during November 30 to December 4 of 2000. This is is our combined contribution to the white paper that will result from this meeting.

  3. Eight Hundred Years of Physics Teaching.

    ERIC Educational Resources Information Center

    Bishop, George

    This book uses a biographical pattern to trace the history of physics teaching. Whenever possible the story of an influential person or institution is used to tell the story of that period. The book begins with the contributions of the Greeks, the Romans, and the Arabs to physics and its teaching. Chapters include: (1) "The First Beginnings of…

  4. Coronal and chromospheric physics

    NASA Technical Reports Server (NTRS)

    Jefferies, J. T.; Landman, D. A.; Orrall, F. Q.

    1983-01-01

    Achievements and completed results are discussed for investigations covering solar activity during the solar maximum mission and the solar maximum year; other studies of solar activity and variability; infrared and submillimeter photometry; solar-related atomic physics; coronal and transition region studies; prominence research; chromospheric research in quiet and active regions; solar dynamics; eclipse studies; and polarimetry and magnetic field measurements. Contributions were also made in defining the photometric filterograph instrument for the solar optical telescope, designing the combined filter spectrograph, and in expressing the scientific aims and implementation of the solar corona diagnostic mission.

  5. Sport, Physical Activity and Well-Being: An Objectivist Account

    ERIC Educational Resources Information Center

    Bloodworth, Andrew; McNamee, Mike; Bailey, Richard

    2012-01-01

    It is widely maintained that sport and physical activities contribute to the development of young people's well-being. Others argue that sports' contribution to good living is so strong that it is even thought to be a human right. Typically, however, the value of physical activity and sport to our well-being is conceptualized and researched within…

  6. FSU High Energy Physics

    SciTech Connect

    Prosper, Harrison B. [Florida State University; Adams, Todd [Florida State University; Askew, Andrew [Florida State University; Berg, Bernd [Florida State University; Blessing, Susan K. [Florida State University; Okui, Takemichi [Florida State University; Owens, Joseph F. [Florida State University; Reina, Laura [Florida State University; Wahl, Horst D. [Florida State University

    2014-12-01

    The High Energy Physics group at Florida State University (FSU), which was established in 1958, is engaged in the study of the fundamental constituents of matter and the laws by which they interact. The group comprises theoretical and experimental physicists, who sometimes collaborate on projects of mutual interest. The report highlights the main recent achievements of the group. Significant, recent, achievements of the group’s theoretical physicists include progress in making precise predictions in the theory of the Higgs boson and its associated processes, and in the theoretical understanding of mathematical quantities called parton distribution functions that are related to the structure of composite particles such as the proton. These functions are needed to compare data from particle collisions, such as the proton-proton collisions at the CERN Large Hadron Collider (LHC), with theoretical predictions. The report also describes the progress in providing analogous functions for heavy nuclei, which find application in neutrino physics. The report highlights progress in understanding quantum field theory on a lattice of points in space and time (an area of study called lattice field theory), the progress in constructing several theories of potential new physics that can be tested at the LHC, and interesting new ideas in the theory of the inflationary expansion of the very early universe. The focus of the experimental physicists is the Compact Muon Solenoid (CMS) experiment at CERN. The report, however, also includes results from the D0 experiment at Fermilab to which the group made numerous contributions over a period of many years. The experimental group is particularly interested in looking for new physics at the LHC that may provide the necessary insight to extend the standard model (SM) of particle physics. Indeed, the search for new physics is the primary task of contemporary particle physics, one motivated by the need to explain certain facts, such as the non-zero neutrino masses or the overwhelming astrophysical evidence for an invisible form of matter, called dark matter, that has had a marked effect on the evolution of structure in the universe. The report highlights the main, recent, experimental achievements of the experimental group, which include the investigation of properties of the W and Z bosons; the search for new heavy stable charged particles and the search for a proposed property of nature called supersymmetry in proton-proton collisions that yield high energy photons. In addition, we report a few results from a more general search for supersymmetry at the LHC, initiated by the group. The report also highlights the group's significant contributions, both theoretical and experimental, to the 2012 discovery of the Higgs boson and the measurement of its properties.

  7. Aspects of Hadron Physics

    E-print Network

    C. D. Roberts; M. S. Bhagwat; S. V. Wright; A. Holl

    2008-02-01

    Detailed investigations of the structure of hadrons are essential for understanding how matter is constructed from the quarks and gluons of Quantum chromodynamics (QCD), and amongst the questions posed to modern hadron physics, three stand out. What is the rigorous, quantitative mechanism responsible for confinement? What is the connection between confinement and dynamical chiral symmetry breaking? And are these phenomena together sufficient to explain the origin of more than 98% of the mass of the observable universe? Such questions may only be answered using the full machinery of nonperturbative relativistic quantum field theory. This contribution provides a perspective on progress toward answering these key questions. In so doing it will provide an overview of the contemporary application of Dyson-Schwinger equations in Hadron Physics. The presentation assumes that the reader is familiar with the concepts and notation of relativistic quantum mechanics, with the functional integral formulation of quantum field theory and with regularisation and renormalisation in its perturbative formulation.

  8. LATERAL ROOT PRIMORDIA 1 of maize acts as a transcriptional activator in auxin signalling downstream of the Aux/IAA gene rootless with undetectable meristem 1

    PubMed Central

    Zhang, Yanxiang; von Behrens, Inga; Zimmermann, Roman; Ludwig, Yvonne; Hey, Stefan; Hochholdinger, Frank

    2015-01-01

    Only little is known about target genes of auxin signalling downstream of the Aux/IAA-ARF module. In the present study, it has been demonstrated that maize lateral root primordia 1 (lrp1) encodes a transcriptional activator that is directly regulated by the Aux/IAA protein ROOTLESS WITH UNDETECTABLE MERISTEM 1 (RUM1). Expression of lrp1 is confined to early root primordia and meristems and is auxin-inducible. Based on its primary protein structure, LRP1 is predicted to be a transcription factor. This notion is supported by exclusive LRP1 localization in the nucleus and its ability to activate downstream gene activity. Based on the observation that lrp1 transcription is completely repressed in the semi-dominant gain of function mutant rum1, it was demonstrated that the lrp1 promoter is a direct target of RUM1 proteins. Subsequently, promoter activation assays indicated that RUM1 represses the expression of a GFP reporter fused to the native promoter of lrp1. Constitutive repression of lrp1 in rum1 mutants is a consequence of the stability of mutated rum1 proteins which cannot be degraded by the proteasome and thus constitutively bind to the lrp1 promoter and repress transcription. Taken together, the repression of the transcriptional activator lrp1 by direct binding of RUM1 to its promoter, together with specific expression of lrp1 in root meristems, suggests a function in maize root development via the RUM1-dependent auxin signalling pathway. PMID:25911745

  9. LATERAL ROOT PRIMORDIA 1 of maize acts as a transcriptional activator in auxin signalling downstream of the Aux/IAA gene rootless with undetectable meristem 1.

    PubMed

    Zhang, Yanxiang; Behrens, Inga von; Zimmermann, Roman; Ludwig, Yvonne; Hey, Stefan; Hochholdinger, Frank

    2015-07-01

    Only little is known about target genes of auxin signalling downstream of the Aux/IAA-ARF module. In the present study, it has been demonstrated that maize lateral root primordia 1 (lrp1) encodes a transcriptional activator that is directly regulated by the Aux/IAA protein ROOTLESS WITH UNDETECTABLE MERISTEM 1 (RUM1). Expression of lrp1 is confined to early root primordia and meristems and is auxin-inducible. Based on its primary protein structure, LRP1 is predicted to be a transcription factor. This notion is supported by exclusive LRP1 localization in the nucleus and its ability to activate downstream gene activity. Based on the observation that lrp1 transcription is completely repressed in the semi-dominant gain of function mutant rum1, it was demonstrated that the lrp1 promoter is a direct target of RUM1 proteins. Subsequently, promoter activation assays indicated that RUM1 represses the expression of a GFP reporter fused to the native promoter of lrp1. Constitutive repression of lrp1 in rum1 mutants is a consequence of the stability of mutated rum1 proteins which cannot be degraded by the proteasome and thus constitutively bind to the lrp1 promoter and repress transcription. Taken together, the repression of the transcriptional activator lrp1 by direct binding of RUM1 to its promoter, together with specific expression of lrp1 in root meristems, suggests a function in maize root development via the RUM1-dependent auxin signalling pathway. PMID:25911745

  10. Parton distributions incorporating QED contributions

    Microsoft Academic Search

    A. D. Martin; R. G. Roberts; W. J. Stirling; R. S. Thorne

    2005-01-01

    We perform a global parton analysis of deep inelastic and related hard-scattering data, including {{mathcal{O}}}(alpha_QED) corrections to the parton evolution. Although the quality of the fit is essentially unchanged, there are two important physical consequences. First, the different DGLAP evolution of u and d type quarks introduces isospin violation, i.e. u^p neq d^n, which is found to be unambiguously in

  11. Physical Abuse

    MedlinePLUS

    ... seniors who are not abused. What are the indicators? Indicators are signs or clues that abuse has ... clusters of indicators that suggest a problem. Physical indicators Sprains, dislocations, fractures, or broken bones Burns from ...

  12. Physics Notes

    ERIC Educational Resources Information Center

    School Science Review, 1976

    1976-01-01

    Describes physics experiments and apparatus construction for studies in astronomy, electricity, wave measurement and speed, the behavior of steel, and intermolecular forces. Includes a detailed description of how to simulate apparent trajectories of the moon and sun. (CS)

  13. Atomic Physics

    NSDL National Science Digital Library

    Christopher Griffith

    This collection provides a basic introduction to Atomic Physics. It reviews the building blocks of atomic structure, explores atomic isotopes, explains Einstein's famous equation E = mc2, and introduces the various types of radiation.

  14. Physics Notes.

    ERIC Educational Resources Information Center

    School Science Review, 1981

    1981-01-01

    Presents activities, experiments, demonstrations, and equipment for physics instruction, including computer applications of sports biomechanics, vibrating magnetometer, alternative uses for an environmental comparator, CMOS integrated circuit logic tutor, and an activity demonstrating positive and negative leakage. (JN)

  15. Magic Physics?

    ERIC Educational Resources Information Center

    Featonby, David

    2010-01-01

    This article examines several readily available "magic tricks" which base their "trickery" on physics principles, and questions the use of the word "magic" in the 21st century, both in popular children's science and in everyday language. (Contains 18 figures.)

  16. Understanding Physics

    Microsoft Academic Search

    Robin Jakeways

    1998-01-01

    There are many books on the market now that cover the material in a typical first-year University Physics course. They mostly originate in the USA where introductory College Physics is clearly big business, and in general they are of an excellent standard. A number of departments, including my own, use one of these as an all-embracing first-year text. Not the

  17. Nuclear Physics

    Microsoft Academic Search

    E. M. Henley; J. P. Schiffer

    1935-01-01

    Nuclear Physics is the branch of physics that deals with the properties and\\u000astructure of matter on the hadronic level. In this article we review briefly\\u000athe history of this field, which has a major role in the development of our\\u000aunderstanding of nature. We then proceed to give an outline of a current\\u000aperspective of the field and of

  18. Nuclear Physics

    E-print Network

    E. M. Henley; J. P. Schiffer

    1998-07-15

    Nuclear Physics is the branch of physics that deals with the properties and structure of matter on the hadronic level. In this article we review briefly the history of this field, which has a major role in the development of our understanding of nature. We then proceed to give an outline of a current perspective of the field and of some of the issues that are now on its frontiers.

  19. Conception, elaboration et mise a l'essai d'un simulateur interactif permettant une approche modelisante: Application aux lois de la genetique mendelienne

    NASA Astrophysics Data System (ADS)

    Lasri, Abdel-Halim

    Dans cette recherche-developpement, nous avons concu, developpe et mis a l'essai un simulateur interactif pour favoriser l'apprentissage des lois probabilistes impliqees dans la genetique mendelienne. Cet environnement informatise devra permettre aux etudiants de mener des experiences simulees, utilisant les statistiques et les probebilites comme outils mathematiques pour modeliser le phenomene de la transmission des caracteres hereditaires. L'approche didactique est essentiellement orientee vers l'utilisation des methodes quantitatives impliquees dans l'experimentation des facteurs hereditaires. En incorporant au simulateur le principe de la "Lunette cognitive" de Nonnon (1986), l'etudiant fut place dans une situation ou il a pu synchroniser la perception de la representation iconique (concrete) et symbolique (abstraite) des lois probabilistes de Mendel. A l'aide de cet environnement, nous avons amene l'etudiant a identifier le(s) caractere(s) hereditaire(s) des parents a croiser, a predire les frequences phenotypiques probables de la descendance issue du croisement, a observer les resultats statistiques et leur fluctuation au niveau de l'histogramme des frequences, a comparer ces resultats aux predictions anticipees, a interpreter les donnees et a selectionner en consequence d'autres experiences a realiser. Les etapes de l'approche inductive sont privilegiees du debut a la fin des activites proposees. L'elaboration, du simulateur et des documents d'accompagnement, a ete concue a partir d'une vingtaine de principes directeurs et d'un modele d'action. Ces principes directeurs et le modele d'action decoulent de considerations theoriques psychologiques, didactiques et technologiques. La recherche decrit la structure des differentes parties composant le simulateur. L'architecture de celui-ci est construite autour d'une unite centrale, la "Principale", dont les liens et les ramifications avec les autres unites confere a l'ensemble du simulateur sa souplesse et sa facilite d'utilisation. Le simulateur "Genetique", a l'etat de prototype, et la documentation qui lui est afferente ont ete soumis a deux mises a l'essai: l'une fonctionnelle, l'autre empirique. La mise a l'essai fonctionnelle, menee aupres d'un groupe d'enseignants experts, a permis d'identifier les lacunes du materiel elabore afin de lui apporter les reajustements qui s'imposaient. La mise a l'essai empirique, conduite par un groupe de onze (11) etudiants de niveau secondaire, avait pour but, d'une part, de tester la facilite d'utilisation du simulateur "Genetique" ainsi que les documents d'accompagnement et, d'autre part, de verifier si les participants retiraient des avantages pedagogiques de cet environnement. Trois techniques furent exploitees pour recolter les donnees de la mise a l'essai empirique. L'analyse des resultats a permis de faire un retour critique sur les productions concretes de cette recherche et d'apporter les modifications necessaires tant au simulateur qu'aux documents d'accompagnement. Cette analyse a permis egalement de conclure que notre simulateur interactif favorise une approche inductive permettant aux etudiants de s'approprier les lois probabilistes de Mendel. Enfin, la conclusion degage des pistes de recherches destinees aux etudes ulterieures, plus particulierement celles qui s'interessent a developper des simulateurs, afin d'integrer a ceux-ci des representations concretes et abstraites presentees en temps reel. Les disquettes du simulateur "Genetique" et les documents d'accompagnement sont annexes a la presente recherche.

  20. PHYSICS TODAY--INTRODUCTORY PHYSICS EDUCATION.

    ERIC Educational Resources Information Center

    1967

    THIS SPECIAL ISSUE OF "PHYSICS TODAY" REVIEWS THE STATUS OF SECONDARY SCHOOL PHYSICS, AS WELL AS COLLEGE PHYSICS AND PHYSICAL SCIENCE. SECONDARY LEVEL PROJECTS INCLUDE PHYSICAL SCIENCE STUDY COMMITTEE PHYSICS, HARVARD PROJECT PHYSICS, THE ENGINEERING CONCEPTS CURRICULUM PROJECT, AND THE NUFFIELD PROJECT. THOSE AT THE COLLEGE LEVEL INCLUDE THE…

  1. The Influence of Accelerator Science on Physics Research

    NASA Astrophysics Data System (ADS)

    Haussecker, Enzo F.; Chao, Alexander W.

    2011-06-01

    We evaluate accelerator science in the context of its contributions to the physics community. We address the problem of quantifying these contributions and present a scheme for a numerical evaluation of them. We show by using a statistical sample of important developments in modern physics that accelerator science has influenced 28% of post-1938 physicists and also 28% of post-1938 physics research. We also examine how the influence of accelerator science has evolved over time, and show that on average it has contributed to a physics Nobel Prize-winning research every 2.9 years.

  2. Contribution of rock fragments to soil fertility

    NASA Astrophysics Data System (ADS)

    Korboulewsky, Nathalie; Besnault, Adeline; Tétégan, Marion; Cousin, Isabelle

    2010-05-01

    Research in plant-soil interactions has focused on the role played by the finest particles, but much less attention has been devoted to quantify the contribution of rock fragments. While the coarse soil fraction is known to affect soil physical properties, such as bulk density, porosity, water infiltration and storage, its contribution to the biogeochemical cycle is neglected. In particular in plant nutrition studies, only the fine fraction (< 2 mm) of soils is sampled and analysed while the coarse fraction (> 2 mm) is considered chemically inert. However, several recent studies have showed that rock fragments contribute significantly to nutrient content and the cation exchange capacity of soils. Considering that stony soils cover about 30% of the surface soils of Western Europe, and 60% in the Mediterranean area, new data on the potential contribution of rock fragments to soil fertility may give new insights that will re-evaluate their role in models on biogeochemical cycling. We attempt to study nutrient availability differents types of rock fragments, and started with five types of pebbles: oolitic limestone, marly limestone, lithographic limestone, chert, and flint. Pebbles were collected in topsoils, brushed thoroughly, and dried before chemical analyses. Exchangeable cations (Ca, Mg, and K) were extracted after immersion of whole pebbles in an ammonium acetate solution (1M) under agitation for 48h. We had previously established the kinetic of extraction over 6 days (after 1, 3.5, 7, 24, 48, 72 and 144 h) and showed that a plateau was reached at 48h, and with a good repeatability. The pattern of release differed among the three studied exchangeable cations, and among pebbles of different origin. The capacity of pebbles to release exchangeable calcium and magnesium was in the following decreasing order: lithographic limestone = marly limestone > oolitic limestone >> chert > flint. As expected, the greatest difference was found between limestones and the two other types. Indeed limestones, compared to chert and flint, contained 20 times higher exchangeable Ca (2.3 g Ca/kg for limestones compared to 0.08 and 0.03 g Ca/kg for chert and flint) and 7 to 10 times higher Mg (19.3g Mg/kg for limestones compared to 2.7 and 1.7 g Mg/kg for chert and flint). Potassium showed a completely different trend with the highest exchangeable K found for chert and marly limestone, intermediate levels for lithographic limestone and flint, and lowest levels for oolitic limestone. In addition, whatever the pebble origin, calcium was the element the most released. Limestones released more Mg than K, and chert and flint more K than Mg. Further, released exchangeable Ca and Mg were closely related to the dry mass of pebbles, but exchangeable K was not. As mentioned above, much more cations were extracted from limestones compared to chert and flint. Besides, chert released twice as much as flint for the three cations. Finally, the fertilisation potential of these pebbles and especially limestones is far to be negligible. For instance, the exchangeable Ca, Mg and K released from lithographic pebbles represent respectively about 50%, 20% and 10% of those released from the surrounding fine earth. These results confirm the potential contribution of rock fragments to soil fertility. Furthermore, important differences in exchangeable cations in relation to their origin were measured. Further analyses are being carried out on pebbles from other origins and on available phosphorus. We believe that this work is a first step towards a better understanding of the role of rock fragments in plant-soil relationships.

  3. Does non-exercise activity thermogenesis contribute to non-shivering thermogenesis?

    Microsoft Academic Search

    Ann M. Harris; Leslie R. MacBride; Randal C. Foster; Shelly K. McCrady; James A. Levine

    2006-01-01

    We wanted to examine if spontaneous physical activity contributes to non-shivering thermogenesis. Ten lean, healthy male subjects wore a physical activity, micro-measurement system while the room temperature was randomly altered at two hourly intervals between thermoneutral (72°F), cool (62°F) and warm (82°F) temperatures. Physical activity measured during the thermoneutral, cooling and warming periods was not significantly different. Cooling increased energy

  4. INTRODUCTION AUX SYSTMES INFORMATIQUES

    E-print Network

    Mignotte, Max

    de Précision ! 6 #12; REPRÉSENTATION FLOTTANTE ARITHMÉTIQUE EN FLOTTANT Multiplication & Division . . . . . . . . . . . . . . . . . . . 6 IEEE 754 Standard . . . . . . . . . . . . . . . . . . . . . . . . 8 Packed Decimal Format

  5. Physics of iron

    SciTech Connect

    Anderson, O.

    1993-10-01

    This volume comprises papers presented at the AIRAPT Conference, June 28 to July 1993. The iron sessions at the meeting were identified as the Second Ironworkers Convention. The renewal of interest stems from advances in technologies in both diamond-anvil cell (DAC) and shock wave studies as well as from controversies arising from a lack of consensus among both experimentalists and theoreticians. These advances have produced new data on iron in the pressure-temperature regime of interest for phase diagrams and for temperatures of the core/mantle and inner-core/outer-core boundaries. Particularly interesting is the iron phase diagram inferred from DAC studies. A new phase, {beta}, with a {gamma}-{beta}-{epsilon} triple point at about 30 GPa and 1190 K, and possible sixth phase, {omega}, with an {epsilon}-{Theta}-melt triple point at about 190 GPa and 4000 K are deemed possible. The importance of the equation of state of iron in consideration of Earth`s heat budget and the origin of its magnetic field invoke the interest of theoreticians who argue on the basis of molecular dynamics and other first principles methods. While the major thrust of both meetings was on the physics of pure iron, there was notable contributions on iron alloys. Hydrogen-iron alloys, iron-sulfur liquids, and the comparability to rhenium in phase diagram studies are discussed. The knowledge of the physical properties of iron were increased by several contributions.

  6. Dynamical contribution into enzyme catalytic efficiency

    E-print Network

    A. E. Sitnitsky

    2006-03-31

    A realistic physical model for the so called rate promoting vibration (RPV) at enzyme action is constructed. The origin of the RPV is assumed to be an oscillating electric field produced by long-lived localized vibrational modes in protein dynamics, namely, by the so called discrete breather (DB) in secondary structure. The strength of interaction of the RPV with the reaction coordinate is evaluated and its effect on the reaction acceleration is assessed within the framework of modern theory for thermally activated escape rate at periodic driving. We reveal the phenomenon of resonant activation in our model elucidating why the frequency of the RPV in the range $100\\div200 cm^{-1}$ was chosen by the evolution of enzymes as an optimal one. The effect of the RPV on the reaction acceleration is shown to vary from moderate one (up to $10^3\\div10^4$) in the case of three-site DB to enormous (up to $10^6\\div10^8$) in the case of five-site DB and thus can significantly contribute into enzyme catalytic efficiency. Also the model is shown to be compatible with the known functional dependence of enzymatic reaction rates on solvent viscosity.

  7. Compulsory Elective Theoretical Physics

    E-print Network

    Dutz, Hartmut

    Aug Sep Compulsory Elective Theoretical Physics (physics606 or - if done previously - 1 module out of physics751, physics754, physics755, physics760, physics7501) 7 cp Specialization (at least 24 cp out of physics61a, -61b, -61c and/or physics62a, -62b, -62c) 24 cp Elective Advanced Lectures (at least 18 cp out

  8. NPOESS Contributions to Climate Observations

    NASA Astrophysics Data System (ADS)

    Day, D. W.; Mussetto, M.

    2009-12-01

    The Environmental Data Products (EDRs) generated from the science instrument suite on the National Polar-orbiting Operational Environmental Satellite System (NPOESS) contribute to 16 of the 26 essential climate variables (ECVs) that are observable from space. NPOESS has the capacity to accommodate additional sensors to increase support for observing climate variables. This poster provides an overview of the ECVs that NPOESS will support and potential sensors that NPOESS could accommodate to support additional ECVs. Northrop Grumman Space Technology (NGST) is the system prime contractor for the National Polar-orbiting Operational Environmental Satellite System (NPOESS). The United States is developing the National Polar-orbiting Operational Environmental Satellite System through the Integrated Program Office (IPO), comprised of the National Oceanic and Atmospheric Administration (NOAA), the Department of Defense (DoD), and the National Aeronautics and Space Administration (NASA).

  9. Possible NASA Contributions to HEAT

    NASA Technical Reports Server (NTRS)

    Shepherd, J. M.

    2004-01-01

    A four-year experiment (HEAT) has been proposed (one summer in the field, 2005) to determine the sources and causes for the enhanced cloud-to-ground lightning over Houston, Texas, in association with simultaneous experiments by the Environmental Protection Agency (EPA) and the Texas Natural Resource Conservation Commission (TNRCC). Houston is the third most populous city in the United States and the region contains 50% of the petroleum refining capacity of the United States. Recent studies covering the period 1989-2000 document a 50% increase of cloud-to-ground lightning in the Houston area as compared to background values, which is second in flash density only to the Tampa Bay, Florida area. It is suggested that the elevated flash densities could result from several factors, including, 1) the convergence due to the urban heat island effect and complex sea breeze, and 2) the increasing levels of air pollution from anthropogenic sources producing numerous small droplets and thereby suppressing mean droplet size. The latter effect would enable more cloud water to reach the mixed phase region where it is involved in the formation of precipitation and the separation of electric charge, leading to an enhancement of lightning. The primary goals of HEAT are to examine the effects of (1) pollution, (2) the urban heat island, and (3) the complex coastline, on storms and lightning characteristics in the Houston area. The project is a multi- agency effort and will employ numerous observing capabilities and expertise. Dr. Shepherd has been asked to serve as a possible co- investigator to contribute expertise in areas related to urban impacts on precipitation variability. Dr. Shepherd is also a key NASA representative in the interagency effort. This presentation will provide an overview of recent NASA research focused on urban rainfall in Houston and offer potential NASA capabilities that could contribute to HEAT.

  10. Woman in Physics in Slovenia

    NASA Astrophysics Data System (ADS)

    Zeleznik, Nadja; Conradi, Marjetka; Remskar, Maja

    2009-04-01

    Slovenian female physicists are organized in an informal network that incorporates more than 100 women working in research, academia, government, and industry. In the past three years we have accomplished several actions in order to motivate young girls and students to pursue physics. Our main achievement was publishing the monograph Physics—My Education in September 2007. The book includes 79 autobiographic contributions of female physicists presenting their life and work in different areas: science (institutes and universities), teaching, industry, and government. We have also organized an exhibition about Slovene women in physics, presenting the very first female physicists and all the next generations. A very popular item among women and men was also a T-shirt with our logo. By selling the books and T-shirts we have collected money for scholarships for female students of physics. The first four scholarships were awarded on March 8, 2008, in the spirit of the International Women's Day.

  11. Computational Physics

    NSDL National Science Digital Library

    MacKinnon, Angus.

    Professor Angus MacKinnon of the Imperial College of Technology and Medicine has created this comprehensive course covering the main computational techniques used in modern physics. The course, which appears here as a highly detailed outline, covers five broad sections: ordinary differential equations, partial differential equations, matrix methods, Monte Carlo methods and other simulation methods, and computer algebra (which offers an introduction to Mathematica). With internal links, this summarized version of the course may best be utilized as back-up material for educators or students taking a similar course on using computers with physics.

  12. APPEL A CONTRIBUTIONS Produire, transformer et stocker dans les campagnes des Gaules romaines.

    E-print Network

    Jeanjean, Louis

    villae gallo-romaines. Longtemps restés de simples traces sur les photographies aériennes, les bâtiments agricoles sont maintenant mieux connus grâce aux publications qui ont suivi l'essor des fouilles en milieu

  13. Electromagnetic contributions to pseudoscalar masses

    E-print Network

    S. Basak; A. Bazavov; C. Bernard; C. DeTar; E. Freeland; W. Freeman; J. Foley; Steven Gottlieb; U. M. Heller; J. E. Hetrick; J. Laiho; L. Levkova; M. Oktay; J. Osborn; R. L. Sugar; A. Torok; D. Toussaint; R. S. Van de Water; R. Zhou

    2013-01-30

    We report on the calculation by the MILC Collaboration of the electromagnetic effects on kaon and pion masses. These masses are computed in QCD with dynamical (asqtad staggered) quarks plus quenched photons at three lattice spacings varying from 0.12 to 0.06 fm. The masses are fit to staggered chiral perturbation theory with NLO electromagnetic terms, as well as analytic terms at higher order. We extrapolate the results to physical light-quark masses and to the continuum limit. At the current stage of the analysis, most, but not all, of the systematic errors have been estimated. The main goal is the comparison of kaon electromagnetic splittings to those of the pion, i.e., an evaluation of the corrections to "Dashen's theorem." This in turn will allow us to significantly reduce the systematic errors in our determination of m_u/m_d.

  14. Unifying Physics

    NASA Astrophysics Data System (ADS)

    Goradia, Shantilal

    2013-04-01

    Century old GR fails to unify quantum physics, nuclear force or distinguish between the mass of living bodies from inert mass. Probabilistic gravity [1] explains strong coupling (nuclear force). The natural log of the age of the universe, 10E60 in Planck times, equaling 137 (1/Alpha) extends physics to deeper science, if we stand on the shoulders of giants like Feynman and Gamow. Implications of [1] are that it is not the earth, but M and S numbers of the particles of the earth are remotely interacting with corresponding numbers of the particles of the moon and the sun respectively, neglecting other heavenly bodies in this short draft. This new physics is likely to enable creative scientific minds to throw light on a theoretical basis for an otherwise arbitrary cosmological constant, uniformity of microwave background, further vindication of Boltzmann, quantum informatics, Einstein’s later publicized views and more, eliminating the need to spend money for implicitly nonexistent quantum gravity and graviton.[4pt] [1] Journal of Physical Science and Applications 2 (7) (2012) 265-268.

  15. Physical Security

    SciTech Connect

    None

    2008-01-01

    The future of physical security at government facilities and national laboratories is rapidly progressing beyond the cliché of gates, guns and guards, and is quickly being replaced by radars, sensors and cameras. Learn more about INL's security research at http://www.facebook.com/idahonationallaboratory.

  16. Physics Portfolios

    ERIC Educational Resources Information Center

    Whitworth, Brooke A.; Bell, Randy L.

    2013-01-01

    Traditionally, teachers assess students' physics understanding through lab activities, responses to open-ended word problems, and tests. But there is another way to measure student understanding, one in which students apply their learning to the world around them. This article shows how to implement student portfolios, which allow students to…

  17. Motorcycle Physics.

    ERIC Educational Resources Information Center

    Engel, Chuck; Girard, Barbara

    1983-01-01

    At the end of a secondary school science study of mechanics, a summary lab uses a motorcycle to provide students with the chance to apply some of the concepts they have studied. Exercises from this motorcycle physics lab are discussed. (Author/JN)

  18. Physics Notes.

    ERIC Educational Resources Information Center

    School Science Review, 1983

    1983-01-01

    Presented are physics experiments, laboratory procedures, demonstrations, and classroom materials/activities. Experiments include: speed of sound in carbon dioxide; inverse square law; superluminal velocities; and others. Equipment includes: current switch; electronic switch; and pinhole camera. Discussion of mechanics of walking is also included.…

  19. Physics Notes.

    ERIC Educational Resources Information Center

    School Science Review, 1982

    1982-01-01

    Demonstrations, procedures, games, teaching suggestions and information on a variety of physics topics are presented, including hydraulic rams, units and formulae, static electric motors, a computer graphics program, diffraction, adaptation of a basic meter, photoelasticity, photo-diodes, radioactive decay, and analog-digital conversions. (DC)

  20. Physics Notes.

    ERIC Educational Resources Information Center

    School Science Review, 1981

    1981-01-01

    Laboratory procedures, equipment, teaching ideas, and resource materials related to physics are discussed. Topics include the construction of a liquid-metal pump, a hydraulic jack, and an apparatus which helps teach time/velocity graphs; current/voltage characteristics of a tungsten filament lamp; and an electric circuit game. (DC)

  1. Physics Demonstrations

    NSDL National Science Digital Library

    A collection of in-depth physics demonstrations with instructions for doing it yourself, videos that let you see how it's done, and suggestions for developing some of the demos into experiments. The demonstrations were developed and tested by The Science House, the mathematics and science learning outreach project of North Carolina State University.

  2. Constructing cardiovascular fitness knowledge in physical education

    PubMed Central

    Zhang, Tan; Chen, Ang; Chen, Senlin; Hong, Deockki; Loflin, Jerry; Ennis, Catherine

    2015-01-01

    In physical education, it has become necessary for children to learn kinesiological knowledge for understanding the benefits of physical activity and developing a physically active lifestyle. This study was conducted to determine the extent to which cognitive assignments about healthful living and fitness contributed to knowledge growth on cardiorespiratory fitness and health. Fourth grade students (N = 616) from 15 randomly sampled urban elementary schools completed 34 cognitive assignments related to the cardiorespiratory physical activities they were engaged in across 10 lessons. Performance on the assignments were analyzed in relation to their knowledge gain measured using a standardized knowledge test. A multivariate discriminant analysis revealed that the cognitive assignments contributed to knowledge gain but the contribution varied assignment by assignment. A multiple regression analysis indicated that students’ assignment performance by lesson contributed positively to their knowledge growth scores. A content analysis based on the constructivist learning framework showed that observing–reasoning assignments contributed the most to knowledge growth. Analytical and analytical–application assignments contributed less than the constructivist theories would predict. PMID:25995702

  3. Plasma physics in Latin America.

    NASA Astrophysics Data System (ADS)

    Rodrigo, A. B.

    1995-02-01

    The status of plasma physics in Latin America is reviewed. The review surveys the history and present situation of the regional activities in high-temperature plasma research, plasma astrophysics, and technological applications of plasma physics. In particular, it presents data on the trends of evolution of scientific staff, annual operating budget, and publication rate for the major Latin American plasma groups during the decade 1983 - 1992. On this basis, the prospects for further growth and the potential for regional contribution to the mainstream of international plasma research and development are discussed.

  4. Nuclear Physics of Neutron Stars

    E-print Network

    J. Piekarewicz

    2009-01-28

    Understanding the equation of state (EOS) of cold nuclear matter, namely, the relation between the pressure and energy density, is a central goal of nuclear physics that cuts across a variety of disciplines. Indeed, the limits of nuclear existence, the collision of heavy ions, the structure of neutron stars, and the dynamics of core-collapse supernova, all depend critically on the equation of state of hadronic matter. In this contribution I will concentrate on the special role that nuclear physics plays in constraining the EOS of cold baryonic matter and its impact on the properties of neutron stars.

  5. 31 CFR 29.352 - Refunded contributions.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ...refunds of employee contributions made by police officers and firefighters through pay period 13. If pay period records are unavailable...of the retirement contributions made to police officers or firefighters in calendar year 1997. Otherwise, if the participant...

  6. 31 CFR 29.352 - Refunded contributions.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ...refunds of employee contributions made by police officers and firefighters through pay period 13. If pay period records are unavailable...of the retirement contributions made to police officers or firefighters in calendar year 1997. Otherwise, if the participant...

  7. 7 CFR 1739.14 - Matching contributions.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ...Department of Agriculture (Continued) RURAL UTILITIES SERVICE, DEPARTMENT OF AGRICULTURE BROADBAND GRANT PROGRAM Community Connect Grant Program § 1739.14 Matching contributions. (a) The grant applicant must contribute a Matching...

  8. PREFACE: 15th Russian Youth Conference on Physics and Astronomy (PhysicA.SPb)

    NASA Astrophysics Data System (ADS)

    Sokolovskii, Grigorii; Averkiev, Nikita

    2013-08-01

    The fifteenth Russian Youth Conference on Physics and Astronomy PhysicA.SPb was held 23-24 October 2012 in Saint-Petersburg, Russia. The Conference continues the tradition of Saint-Petersburg Seminars on Physics and Astronomy originating from the mid-90s. The main feature of PhysicA.SPb since then, remains the combination of both scientific and educational quality of the contributions delivered to the young audience. This feature makes it possible to combine the whole spectrum of modern Physics and Astronomy within one conference. PhysicA.SPb 2012 has brought together more than 150 students, young scientists and their professors from many universities and research institutes across Russia, as well as from Belarus, Ukraine, Finland, France and the United Kingdom. Oral and poster presentations were combined into a few well-defined sections among which one should name Astronomy and Astrophysics, Physics of semiconductors, Physics of solid state, Physics and technology of the alternative energetics, Nanostructured and thin-film materials, THz and UHF materials and devices, and Physics of the quantum-sized structures. This issue of the Journal of Physics: Conference Series presents the extended contributions from participants of PhysicA.SPb 2012 that were peer-reviewed by expert referees through processes administered by the Presiders of the Organising and Programme Committees to the best professional and scientific standards. Grigorii S. Sokolovskii and Nikita S. Averkiev Editors

  9. Prediction of physical fitness and physical activity level in adulthood by physical performance and physical activity in adolescence--an 18-year follow-up study.

    PubMed

    Barnekow-Bergkvist, M; Hedberg, G; Janlert, U; Jansson, E

    1998-10-01

    The aim of the study was to investigate relationships between physical fitness and self-reported physical activity in adulthood and to what extent the level of physical fitness and leisure-time physical activity in adulthood can be explained by anthropometric measures, physical performance, physical activity, attitudes to sports activities and socio-demographic characteristics at the age of 16. A group of 157 men and 121 women was tested at the ages of 16 and 34 by means of questionnaires and fitness tests. Physically active men and women had higher estimated VO2 max and performed better in curl ups and bench press than those who were inactive. Performance in physical tests, height, weight and physical activity at the age of 16 contributed best to explain adult physical performance and physical activity. The magnitude of explanation varied between 10% (9-min run test) and 56% (bench press test); it was in general lower in the men than in the women. The various fitness tests and physical activity were explained by different predictors and the predictors also differed between men and women. The findings about attitudes to sports and socio-demographic factors at a young age that influence adult physical activity habits and fitness are very complex and further research is required to identify specific inactivity risks. PMID:9809389

  10. Knowing your contribution to climate

    NASA Astrophysics Data System (ADS)

    Crespo, I.

    2009-04-01

    Challenging issues such as greenhouse gas emissions and Climate Change may seem very remote, but there are ways that can help to better perceive our contribution to such problems. And that is where a new mobile application - mobGAS© - comes into play. mobGAS© will be the first mobile application about climate change with wide distribution in Europe and world. mobGAS© aims to make the connection between daily activities and the emissions of Greenhouse Gases and when possible suggest changes to improve individual performances. It is a kind of diary of users' behaviour through the emissions of Greenhouse Gases (GHG). The application includes several icons representing activities or appliances that are usually used every day (more than 60). These activities or appliances may be set along the day reflecting users' daily choices. This will finally be converted in individual emissions of GHG that may be compared with the weekly average or with country and world average. mobGAS© will challenge individuals to make small changes to their daily routine in order to achieve significant reductions of greenhouse gas emissions. It will be developed for the 27 EU countries, and available in 21 languages.

  11. Genes contributing to prion pathogenesis

    PubMed Central

    Tamgüney, Gültekin; Giles, Kurt; Glidden, David V.; Lessard, Pierre; Wille, Holger; Tremblay, Patrick; Groth, Darlene F.; Yehiely, Fruma; Korth, Carsten; Moore, Richard C.; Tatzelt, Jörg; Rubenstein, Eric; Boucheix, Claude; Yang, Xiaoping; Stanley, Pamela; Lisanti, Michael P.; Dwek, Raymond A.; Rudd, Pauline M.; Moskovitz, Jackob; Epstein, Charles J.; Cruz, Tracey Dawson; Kuziel, William A.; Maeda, Nobuyo; Sap, Jan; Ashe, Karen Hsiao; Carlson, George A.; Tesseur, Ina; Wyss-Coray, Tony; Mucke, Lennart; Weisgraber, Karl H.; Mahley, Robert W.; Cohen, Fred E.; Prusiner, Stanley B.

    2009-01-01

    SUMMARY Prion diseases are caused by conversion of a normally folded, nonpathogenic isoform of the prion protein (PrPC) to a misfolded, pathogenic isoform (PrPSc). Prion inoculation experiments in mice expressing homologous PrPC molecules on different genetic backgrounds displayed different incubation times, indicating that the conversion reaction may be influenced by other gene products. To identify genes that contribute to prion pathogenesis, we analyzed prion incubation times in mice in which the gene product was inactivated, knocked out or overexpressed. We tested 20 gene candidates, because their products either colocalize with PrP, are associated with Alzheimer’s disease, are elevated during prion disease, or function in PrP-mediated signaling, PrP glycosylation, or protein maintenance. Whereas some of the candidates tested may have a role in the normal function of PrPC, our data show that many genes previously implicated in prion replication have no discernable effect on the pathogenesis of prion disease. While most genes tested did not significantly affect survival times, ablation of amyloid beta (A4) precursor protein (App) or interleukin 1 receptor, type I (Il1r1), and transgenic overexpression of human superoxide dismutase 1 (SOD1) prolonged incubation times by 13%, 16%, and 19%, respectively. PMID:18559949

  12. The microbial contribution to macroecology

    PubMed Central

    Barberán, Albert; Casamayor, Emilio O.; Fierer, Noah

    2014-01-01

    There has been a recent explosion of research within the field of microbial ecology that has been fueled, in part, by methodological improvements that make it feasible to characterize microbial communities to an extent that was inconceivable only a few years ago. Furthermore, there is increasing recognition within the field of ecology that microorganisms play a critical role in the health of organisms and ecosystems. Despite these developments, an important gap still persists between the theoretical framework of macroecology and microbial ecology. We highlight two idiosyncrasies of microorganisms that are fundamental to understanding macroecological patterns and their mechanistic drivers. First, high dispersal rates provide novel opportunities to test the relative importance of niche, stochastic, and historical processes in structuring biological communities. Second, high speciation rates potentially lead to the convergence of ecological and evolutionary time scales. After reviewing these unique aspects, we discuss strategies for improving the conceptual integration of microbes into macroecology. As examples, we discuss the use of phylogenetic ecology as an integrative approach to explore patterns across the tree of life. Then we demonstrate how two general theories of biodiversity (i.e., the recently developed theory of stochastic geometry and the neutral theory) can be adapted to microorganisms. We demonstrate how conceptual models that integrate evolutionary and ecological mechanisms can contribute to the unification of microbial ecology and macroecology. PMID:24829564

  13. Georgius Agricola's contributions to hydrology

    NASA Astrophysics Data System (ADS)

    Barton, Isabel F.

    2015-04-01

    Georgius Agricola's 1546 book De Ortu et Causis Subterraneorum (On the Source and Causes of What is Underground) was the first European work since antiquity to focus on hydrology and helped to shape the thought of Nicolaus Steno, Pierre Perrault, A.G. Werner, and other important figures in the history of hydrology and geology. De Ortu contains the first known expressions of numerous concepts important in modern hydrology: erosion as an active process, groundwater movement through pores and fissures, hydrofracturing, water-rock reaction, and others. The concepts of groundwater origins, movement, and nature in De Ortu were also the foundation for the theories of ore deposit formation for which Agricola is better known. In spite of their importance, most of Agricola's contributions to the study of groundwater are unrecognized today because De Ortu, alone of his major works, has never been translated out of Latin and no existing vernacular summary of it is longer than two pages. This article presents the first detailed description of Agricola's work on hydrology and discusses the derivation and impact of his ideas.

  14. 26 CFR 1.401(m)-1 - Employee contributions and matching contributions.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ...contributions and matching contributions. 1.401(m)-1 Section 1.401(m)-1 Internal Revenue INTERNAL REVENUE SERVICE...Profit-Sharing, Stock Bonus Plans, Etc. § 1.401(m)-1 Employee contributions and matching...

  15. 26 CFR 1.401(m)-1 - Employee contributions and matching contributions.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... (2) Automatic satisfaction by certain plans...satisfied with respect to employee contributions...the plan to which the employee contributions or matching...plan that provides for employee contributions or matching...plan must provide for satisfaction of...

  16. Ordered BaAl4- Type Variants in the BaAuxSn4-x System: A Unified View on Their Phase Stabilities versus Valence Electron Counts

    SciTech Connect

    Lin, Qisheng [Ames Laboratory; Miller, Gordon J. [Ames Laboratory; Corbett, John D. [Ames Laboratory

    2014-05-28

    Three ordered structures of the tetragonal BaAl4 type were identified in the Ba–Au–Sn system, from which a unified view of the interplay between the valence electron counts (VECs) and phase stabilities of these three types of derivatives can be developed. The BaNiSn3 (I4mm), ThCr2Si2 (I4/mmm), and CaBe2Ge2 (P4/nmm) type BaAuxSn4–x phases occurred respectively at x = 0.78(1)–1, 1.38(1)–1.47(1), and 1.52(1)–2.17(1), consistent with theoretical atomic “coloring” analyses that reveal an optimal VEC of 14 for the ThCr2Si2 type but larger and smaller values respectively for the BaNiSn3- and CaBe2Ge2-type structures.

  17. Capabilities and Contributions of Unwed Fathers

    Microsoft Academic Search

    Robert I. Lerman

    2010-01-01

    Young, minority, and poorly educated fathers in fragile families have little capacity to support their children financially and are hard-pressed to maintain stability in raising those children. In this article, Robert Lerman examines the capabilities and contributions of unwed fathers, how their capabilities and contributions fall short of those of married fathers, how those capabilities and contributions differ by the

  18. Capabilities and Contributions of Unwed Fathers

    Microsoft Academic Search

    Robert I. Lerman

    2010-01-01

    Summary:Young, minority, and poorly educated fathers in fragile families have little capacity to support their children financially and are hard-pressed to maintain stability in raising those children. In this article, Robert Lerman examines the capabilities and contributions of unwed fathers, how their capabilities and contributions fall short of those of married fathers, how those capabilities and contributions differ by the

  19. Paternal contribution: new insights and future challenges

    Microsoft Academic Search

    Stephen A. Krawetz

    2005-01-01

    It has been widely held that all that fathers essentially contribute to the next generation is half their genome. However, recent progress towards understanding biological processes such as sperm maturation and fertilization now indicates that the paternal contribution has been underestimated. To tackle some of the misconceptions surrounding the paternal contribution, the factors that are actually delivered by the sperm

  20. Contribution of laser ranging to Earth's sciences

    NASA Astrophysics Data System (ADS)

    Exertier, Pierre; Bonnefond, Pascal; Deleflie, Florent; Barlier, François; Kasser, Michel; Biancale, Richard; Ménard, Yves

    2006-11-01

    Satellite and Lunar Laser Ranging (SLR and LLR, respectively) are based on a direct measurement of a distance by exactly measuring the time transit of a laser beam between a station and a space target. These techniques have proven to be very efficient methods for contributing to the tracking of both artificial satellites and the Moon, and for determining accurately their orbit and the associated geodynamical parameters, although hampered by the non-worldwide coverage and the meteorological conditions. Since more than 40 years, the French community (today 'Observatoire de la Côte d'Azur', CNES, 'Observatoire de Paris', and IGN) is largely involved in the technological developments as well as in the scientific achievements. The role of the laser technique has greatly evolved thanks to the success of GPS and DORIS; the laser technique teams have learnt to focus their effort in fields where this technique is totally specific and irreplaceable. The role of SLR data in the determination of terrestrial reference systems and in the modelling of the first terms of the gravity field (including the terrestrial constant GM that defines the scale of orbits) has to be emphasized, which is of primary importance in orbitography, whatever the tracking technique used. In addition, the role of LLR data (with two main stations, at Mac Donald (United States) and Grasse (France), since 30 years) has been of particular importance for improving solar system ephemeris and contributing to some features of fundamental physics (equivalence principle). Today, the role of the SLR technique is ( i) to determine and to maintain the scale factor of the global terrestrial reference frame, ( ii) to strengthen the vertical component (including velocity) of the positioning, which is crucial for altimetry missions and tectonic motions, ( iii) to locate the geocenter with respect to the Earth's crust, ( iv) to avoid any secular and undesirable drift of geodetic systems thanks to a very good accuracy. Now, the future of this technique is to enlarge the technical capability of laser ranging stations for long distances, that is the tracking of space targets orbiting through the Solar System. In addition, the laser technique should participate into time transfer experiments and improve, with mobile systems like the FTLRS and the new SLR2000 concept, the coverage of the international laser network (ILRS). To cite this article: P. Exertier et al., C. R. Geoscience 338 (2006).

  1. Genome-Wide Identification and Expression Profiling Analysis of the Aux/IAA Gene Family in Medicago truncatula during the Early Phase of Sinorhizobium meliloti Infection

    PubMed Central

    Zhang, Lei; Sun, Tao; Xu, Luqin; Tie, Shuanggui; Wang, Huizhong

    2014-01-01

    Background Auxin/indoleacetic acid (Aux/IAA) genes, coding a family of short-lived nuclear proteins, play key roles in wide variety of plant developmental processes, including root system regulation and responses to environmental stimulus. However, how they function in auxin signaling pathway and symbiosis with rhizobial in Medicago truncatula are largely unknown. The present study aims at gaining deeper insight on distinctive expression and function features of Aux/IAA family genes in Medicago truncatula during nodule formation. Principal Findings Using the latest updated draft of the full Medicago truncatula genome, a comprehensive identification and analysis of IAA genes were performed. The data indicated that MtIAA family genes are distributed in all the M. truncatula chromosomes except chromosome 6. Most of MtIAA genes are responsive to exogenous auxin and express in tissues-specific manner. To understand the biological functions of MtIAA genes involved in nodule formation, quantitative real-time polymerase chain reaction (qRT-PCR) was used to test the expression profiling of MtIAA genes during the early phase of Sinorhizobium meliloti (S. meliloti) infection. The expression patterns of most MtIAA genes were down-regulated in roots and up-regulated in shoots by S. meliloti infection. The differences in expression responses between roots and shoots caused by S. meliloti infection were alleviated by 1-NOA application. Conclusion The genome-wide identification, evolution and expression pattern analysis of MtIAA genes were performed in this study. The data helps us to understand the roles of MtIAA-mediated auxin signaling in nodule formation during the early phase of S. meliloti infection. PMID:25226164

  2. Top Quark Physics at the Tevatron

    E-print Network

    Frederic Deliot; Douglas Glenzinski

    2011-10-10

    We review the field of top-quark physics with an emphasis on experimental techniques. The role of the top quark in the Standard Model of particle physics is summarized and the basic phenomenology of top-quark production and decay is introduced. We discuss how contributions from physics beyond the Standard Model could affect top-quark properties or event samples. The many measurements made at the Fermilab Tevatron, which test the Standard Model predictions or probe for direct evidence of new physics using the top-quark event samples, are reviewed here.

  3. Eco - No(?) - Physics - comments and reflexions -

    E-print Network

    Reimann, S

    2006-01-01

    How can econophysics contribute to economics? Since the relation between basic principles of physics and economics is not established, there is no reason why physical theories should be of any value for economic theory. While economic theories leave the physicists largely without orientation in this field, econo-physicists should orient themselves at concrete problems from economic practice rather than from economic academics. Thereby physicists should respect the lead of economists. This then also puts physics closer to econometrics. Then the natural strength of physics in dealing with empirical data as the fundamental basis for its research could be valuable for both, theory as well as for applications in economics.

  4. The Other Hall Effect: College Board Physics

    NASA Astrophysics Data System (ADS)

    Sheppard, Keith; Gunning, Amanda M.

    2013-09-01

    Edwin Herbert Hall (1855-1938), discoverer of the Hall effect, was one of the first winners of the AAPT Oersted Medal for his contributions to the teaching of physics. While Hall's role in establishing laboratory work in high schools is widely acknowledged, his position as chair of the physics section of the Committee on College Entrance Requirements was contentious and his involvement in launching College Board Physics, what we call the "other Hall effect," has largely been overlooked. This article details Hall's role in the development of College Board Physics.

  5. Physical Activity (Exercise)

    MedlinePLUS

    ... Physical activity (exercise) fact sheet ePublications Physical activity (exercise) fact sheet How can physical activity improve my ... recent hip surgery More information on physical activity (exercise) For more information about physical activity (exercise), call ...

  6. Physics of Forced Unsteady Separation

    NASA Technical Reports Server (NTRS)

    Carr, Lawrence W. (editor)

    1992-01-01

    This report contains the proceedings of a workshop held at NASA Ames Research Center in April 1990. This workshop was jointly organized by NASA, the Air Force Office of Scientific Research (AFOSR), and the Army Research Office (ARO), and was directed toward improved understanding of the physical processes that cause unsteady separation to occur. The proceedings contain the written contributions for the workshop, and include selected viewgraphs used in the various presentations.

  7. Physics with Taus at CDF

    SciTech Connect

    Safonov, Alexei; /UC, Davis

    2004-12-01

    In this contribution, the authors describe the hadronic tau reconstruction and identification procedures adopted by the CDF experiment at Fermilab and present an overview of physics studies using tau leptons that are underway at CDF. Recent results using data obtained from Run II of the Tevatron are presented and include precision electroweak measurements as well as studies aimed at beyond Standard Model searches for new particles and interactions.

  8. Conceptual Physics

    NSDL National Science Digital Library

    Hewitt, Paul G.

    From Prentice Hall and Pearson Education comes the online Conceptual Physics Tutorial. The site provides information for students on mechanics, properties of matter, heat, sound and light, electricity and magnetism, and atomic and nuclear physics. Each chapter contains subheadings and various described links to sites that focus on that particular subject. Under momentum, for example, more than a dozen sites are included under subheadings such as impulse changes, bouncing, conservation of momentum, collisions, and momentum vectors. Other highlights of the site include links to simulations found on the Web and questions of the week, along with their answer. Even though some of the provided links were dead, the repository of information should prove useful to visitors.

  9. Conceptual Physics

    NSDL National Science Digital Library

    Hewitt, Paul G.

    2003-01-01

    From Prentice Hall and Pearson Education comes the online Conceptual Physics Tutorial. The site provides information for students on mechanics, properties of matter, heat, sound and light, electricity and magnetism, and atomic and nuclear physics. Each chapter contains subheadings and various described links to sites that focus on that particular subject. Under momentum, for example, more than a dozen sites are included under subheadings such as impulse changes, bouncing, conservation of momentum, collisions, and momentum vectors. Other highlights of the site include links to simulations found on the Web and questions of the week, along with their answer. Even though some of the provided links were dead, the repository of information should prove useful to visitors.

  10. Unparticle Physics

    SciTech Connect

    Georgi, Howard [Center for the Fundamental Laws of Nature, Jefferson Physical Laboratory, Harvard University, Cambridge, Massachusetts 02138 (United States)

    2007-06-01

    I discuss some simple aspects of the low-energy physics of a nontrivial scale invariant sector of an effective field theory--physics that cannot be described in terms of particles. I argue that it is important to take seriously the possibility that the unparticle stuff described by such a theory might actually exist in our world. I suggest a scenario in which some details of the production of unparticle stuff can be calculated. I find that in the appropriate low-energy limit, unparticle stuff with scale dimension d{sub U} looks like a nonintegral number d{sub U} of invisible particles. Thus dramatic evidence for a nontrivial scale invariant sector could show up experimentally in missing energy distributions.

  11. Positron Physics

    NASA Technical Reports Server (NTRS)

    Drachman, Richard J.

    2003-01-01

    I will give a review of the history of low-energy positron physics, experimental and theoretical, concentrating on the type of work pioneered by John Humberston and the positronics group at University College. This subject became a legitimate subfield of atomic physics under the enthusiastic direction of the late Sir Harrie Massey, and it attracted a diverse following throughout the world. At first purely theoretical, the subject has now expanded to include high brightness beams of low-energy positrons, positronium beams, and, lately, experiments involving anti-hydrogen atoms. The theory requires a certain type of persistence in its practitioners, as well as an eagerness to try new mathematical and numerical techniques. I will conclude with a short summary of some of the most interesting recent advances.

  12. IDS contribution to ITRF2008

    NASA Astrophysics Data System (ADS)

    Valette, Jean-Jacques; Lemoine, Frank G.; Ferrage, Pascale; Yaya, Philippe; Altamimi, Zuheir; Willis, Pascal; Soudarin, Laurent

    2010-12-01

    For the first time, the International DORIS Service (IDS) has produced a technique level combination based on the contributions of seven analysis centers (ACs), including the European Space Operations Center (ESOC), Geodetic Observatory Pecny (GOP), Geoscience Australia (GAU), the NASA Goddard Space Flight Center (GSFC), the Institut Géographique National (IGN), the Institute of Astronomy, Russian Academy of Sciences (INASAN, named as INA), and CNES/CLS (named as LCA). The ACs used five different software packages to process the DORIS data from 1992 to 2008, including NAPEOS (ESA), Bernese (GOP), GEODYN (GAU, GSC), GIPSY/OASIS (INA), and GINS (LCA). The data from seven DORIS satellites, TOPEX/Poseidon, SPOT-2, SPOT-3, SPOT-4, SPOT-5, Envisat and Jason-1 were processed and all the analysis centers produced weekly SINEX files in either variance-covariance or normal equation format. The processing by the analysis centers used the latest GRACE-derived gravity models, forward modelling of atmospheric gravity, updates to the radiation pressure modelling to improve the DORIS geocenter solutions, denser parameterization of empirically determined drag coefficients to improve station and EOP solutions, especially near the solar maximum in 2001-2002, updated troposphere mapping functions, and an ITRF2005-derived station set for orbit determination, DPOD2005. The CATREF software was used to process the weekly AC solutions, and produce three iterations of an IDS global weekly combination. Between the development of the initial solution IDS-1, and the final solution, IDS-3, the ACs improved their analysis strategies and submitted updated solutions to eliminate troposphere-derived biases in the solution scale, to reduce drag-related degradations in station positioning, and to refine the estimation strategy to improve the combination geocenter solution. An analysis of the frequency content of the individual AC geocenter and scale solutions was used as the basis to define the scale and geocenter of the IDS-3 combination. The final IDS-3 combination has an internal position consistency (WRMS) that is 15 to 20 mm before 2002 and 8 to 10 mm after 2002, when 4 or 5 satellites contribute to the weekly solutions. The final IDS-3 combination includes solutions for 130 DORIS stations on 67 different sites of which 35 have occupations over 16 years (1993.0-2009.0). The EOPs from the IDS-3 combination were compared with the IERS 05 C04 time series and the RMS agreement was 0.24 mas and 0.35 mas for the X and Y components of polar motion. The comparison to ITRF2005 in station position shows an agreement of 6 to 8 mm RMS in horizontal and 10.3 mm in height. The RMS comparison to ITRF2005 in station velocity is at 1.8 mm/year on the East component, to 1.2 mm/year in North component and 1.6 mm/year in height.

  13. Aerosol contributions to speleothem geochemistry

    NASA Astrophysics Data System (ADS)

    Dredge, J. A.; Fairchild, I. J.; Harrison, R.; Woodhead, J. D.; Hellstrom, J.

    2011-12-01

    The term "aerosols" encompasses the suspension of both fine solid or liquid particles within a gaseous medium. Aerosols become suspended into the earth's atmosphere through a multitude of processes both natural and anthropogenic. Atmospheric aerosols enter cave networks as a result of cave ventilation processes and are either deposited, or cycled and removed from the system. Speleothem offer a multiproxy palaeoclimate resource; many of the available proxies have been extensively investigated and utilised for palaeoclimatic reconstructions in a range of studies. The potential contribution of aerosols to speleothem chemistry and their applicability for palaeoenvironmental reconstructions remains untested and the extent of their value as an addition to palaeoclimate sciences unknown. Aerosols through incorporation into speleothem may provide a novel palaeoenvironmental resource. The aerosol component of interest is that which is transported into the cave atmosphere and deposited and are available for incorporation into precipitated calcite. Aerosol deposition and therefore distribution in the cave has shown to be a complex function of ventilation and changing environmental factors. Through detailed monitoring aerosols have been detected, identified, characterised and quantified to determine their prominence in the cave system. Investigations are on a case study basis, searching for suitable aerosol proxies of environmentally significant emission processes. Case studies include: Palaeofires at Yarrangobilly Caves, Australia; anthropogenic emissions at St Michaels Cave, Gibraltar and Cheddar gorge, UK; and drip water aerosol production and geochemical addition in Obir cave, Austria. Monitoring has allowed for the temporal and spatial determination of aerosols in karst networks. Speleothem samples will be analysed in combination with in-situ monitoring to determine incorporation factors and record preservation. By understanding how aerosols are transmitted within the cave and ultimately incorporated into speleothems, a record of aerosol emission event frequency, intensity and timing can be produced and directly correlated with changing palaeoclimate. Speleothem through aerosol incorporation have the potential to preserve a record of a multitude of processes not yet constrained by previously investigated proxies, providing an additional dimension to speleological palaeoenvironmental investigations.

  14. Physical Geology

    NSDL National Science Digital Library

    Stephen Nelson

    This Tulane University course covers the nature of the Earth, the development of its surficial features, and the results of the interaction of chemical, physical, and biological factors on the planet. Lecture notes are about energy and minerals; igneous, metamorphic and sedimentary rocks; weathering and soils; geologic time; mass wasting; streams; groundwater; wind action and deserts; oceans; deformation of rock; earthquakes and the interior of the Earth; global tectonics; planetary changes; and glaciers.

  15. Soil physics

    SciTech Connect

    Jury, W.A.; Gardner, W.H.; Gardner, W.H.

    1991-01-01

    In response to shifting research interests, this 5th edition book has been prepared to present contemporary information on traditional as well as current soil physics topics. Soil solid phase and soil dynamics have been reduced from 5 chapters in the previous edition to a single chapter here. Wind and water erosion have been eliminated. Information concerning transport of heat, water and chemicals has been expanded. Soil water relations, thermal regime aeration, solute transport and spatial variations of soil properties are well covered.

  16. b Physics

    SciTech Connect

    Perret, Pascal [Laboratoire de Physique Corpusculaire, Universite Blaise Pascal, IN2P3-CNRS F-63177 Aubiere cedex (France)

    1998-10-19

    A summary of the most recent and important measurements in b physics is presented. The production of beauty particles in Z decays, b quark couplings, lifetimes, B{sup 0}-B{sup 0} oscillations, semileptonic b decays and studies of the number of charm quarks produced in b decays are reviewed. Extraction of the Cabibbo-Kobayashi-Maskawa (CKM) matrix elements |V{sub td}|, |V{sub cb}|, |V{sub ub}| and implication for |V{sub ts}| are discussed.

  17. Doughy Physics

    NSDL National Science Digital Library

    2012-05-10

    Learners drop two different masses of play dough and observe how long it takes them to hit the ground. Learners also drop two pieces of paper of the same material and size, one crumpled and one flat, to see how air resistance affects the speed at which an object falls. This activity starts on p.8 of the manual. This manual contains 4 activities related to the Spectra's Force comic book published by the American Physical Society.

  18. Aspects of hadron physics.

    SciTech Connect

    Bhagwat, M. S.; Hoell, A.; Roberts, C. D.; Wright, S. V.; Physics; Univ. Rostock

    2007-01-01

    Detailed investigations of the structure of hadrons are essential for understanding how matter is constructed from the quarks and gluons of Quantum chromodynamics (QCD), and amongst the questions posed to modern hadron physics, three stand out. What is the rigorous, quantitative mechanism responsible for confinement? What is the connection between confinement and dynamical chiral symmetry breaking? And are these phenomena together sufficient to explain the origin of more than 98% of the mass of the observable universe? Such questions may only be answered using the full machinery of nonperturbative relativistic quantum field theory. This contribution provides a perspective on progress toward answering these key questions. In so doing it will provide an overview of the contemporary application of Dyson-Schwinger equations in Hadron Physics, additional information on which may be found in Refs. [1, 2, 3, 4, 5, 6]. The presentation assumes that the reader is familiar with the concepts and notation of relativistic quantum mechanics, with the functional integral formulation of quantum field theory and with regularization and renormalization in its perturbative formulation. For these topics, in order of appearance, Refs. [7, 8, 9, 10] are useful. In addition, Chaps. 1 and 2 of Ref. [5] review the bulk of the necessary concepts. Hadron physics is a key part of the international effort in basic science. For example, in the USA we currently have the Thomas Jefferson National Accelerator Facility (JLab) and the Relativistic Heavy Ion Collider (RHIC) while in Europe hadron physics is studied at the Frascati National Laboratory and is an important part of a forthcoming pan-European initiative; namely, the Facility for Antiproton and Ion Research (FAIR) at GSI-Darmstadt. Progress in this field is gauged via the successful completion of precision measurements of fundamental properties of hadrons; e.g., the pion, proton and neutron, and simple nuclei, for comparison with theoretical calculations to provide a quantitative understanding of their quark substructure.

  19. Scattering processes in atomic physics, nuclear physics, and cosmology

    NASA Astrophysics Data System (ADS)

    Shchedrin, Gavriil

    The universal way to probe a physical system is to scatter a particle or radiation off the system. The results of the scattering are governed by the interaction Hamiltonian of the physical system and scattered probe. An object of the investigation can be a hydrogen atom immersed in a laser field, heavy nucleus exposed to a flux of neutrons, or space-time metric perturbed by the stress-energy tensor of neutrino flux in the early Universe. This universality of scattering process designates the Scattering Matrix, defined as the unitary matrix of the overlapping in and out collision states, as the central tool in theoretical physics. In this Thesis we present our results in atomic physics, nuclear physics, and cosmology. In these branches of theoretical physics the key element that unifies all of them is the scattering matrix. Additionally, within the scope of Thesis we present underlying ideas responsible for the unification of various physical systems. Within atomic physics problems, namely the axial anomaly contribution to parity nonconservation in atoms, and two-photon resonant transition in a hydrogen atom, it was the scattering matrix which led to the Landau-Yang theorem, playing the central role in these problems. In scattering problems of cosmology and quantum optics we developed and implemented mathematical tools that allowed us to get a new point of view on the subject. Finally, in nuclear physics we were able to take advantage of the target complexity in the process of neutron scattering which led to the formulation of a new resonance width distribution for an open quantum system.

  20. CIEAEM 57 Italie Italy Foire aux ides, Session de Poster Piazza Armerina, Forum of Ideas, Poster Session

    E-print Network

    Spagnolo, Filippo

    ____________________________________________________________________________ 321 Unconventional energy sources as a topic used in teaching mathematics, physics and technology of electrical energy, renewable and non-renewable sources of energy, energy from unconventional sources, wind. Atmosphere movement energy, that is wind energy, is a converted form of solar energy. Wind is generated

  1. Serotonergic Contribution to Boys' Behavioral Regulation

    PubMed Central

    Nantel-Vivier, Amélie; Young, Simon N.; Parent, Sophie; Bélanger, Stacey Ageranioti; Sutton, Rachel; Dubois, Marie-Eve

    2011-01-01

    Objectives Animal and human adult studies reveal a contribution of serotonin to behavior regulation. Whether these findings apply to children is unclear. The present study investigated serotonergic functioning in boys with a history of behavior regulation difficulties through a double-blind, acute tryptophan supplementation procedure. Method Participants were 23 boys (age 10 years) with a history of elevated physical aggression, recruited from a community sample. Eleven were given a chocolate milkshake supplemented with 500mg tryptophan, and 12 received a chocolate milkshake without tryptophan. Boys engaged in a competitive reaction time game against a fictitious opponent, which assessed response to provocation, impulsivity, perspective taking, and sharing. Impulsivity was further assessed through a Go/No-Go paradigm. A computerized emotion recognition task and a staged instrumental help incident were also administered. Results Boys, regardless of group, responded similarly to high provocation by the fictitious opponent. However, boys in the tryptophan group adjusted their level of responding optimally as a function of the level of provocation, whereas boys in the control group significantly decreased their level of responding towards the end of the competition. Boys in the tryptophan group tended to show greater perspective taking, tended to better distinguish facial expressions of fear and happiness, and tended to provide greater instrumental help to the experimenter. Conclusions The present study provides initial evidence for the feasibility of acute tryptophan supplementation in children and some effect of tryptophan supplementation on children's behaviors. Further studies are warranted to explore the potential impact of increased serotonergic functioning on boys' dominant and affiliative behaviors. PMID:21673801

  2. What contributes to individual differences in brain structure?

    PubMed Central

    Gu, Jenny; Kanai, Ryota

    2014-01-01

    Individual differences in adult human brain structure have been found to reveal a great deal of information about variability in behaviors, cognitive abilities and mental and physical health. Driven by such evidence, what contributes to individual variation in brain structure has gained accelerated attention as a research question. Findings thus far appear to support the notion that an individual’s brain architecture is determined largely by genetic and environmental influences. This review aims to evaluate the empirical literature on whether and how genes and the environment contribute to individual differences in brain structure. It first considers how genetic and environmental effects may separately contribute to brain morphology, by examining evidence from twin, genome-wide association, cross-sectional and longitudinal studies. Next, evidence for the influence of the complex interplay between genetic and environmental factors, characterized as gene-environment interactions and correlations, is reviewed. In evaluating the extant literature, this review will conclude that both genetic and environmental factors play critical roles in contributing to individual variability in brain structure. PMID:24808848

  3. Long-distance contributions to flavour-changing processes

    E-print Network

    C. Sachrajda

    2015-03-05

    Standard lattice calculations in flavour physics or in studies of hadronic structure are based on the evaluation of matrix elements of local composite operators between hadronic states or the vacuum. In this talk I discuss developments aimed at the computation of long-distance, and hence non-local, contributions to such processes. In particular, I consider the calculation of the $K_L$-$K_S$ mass difference $\\Delta m_K=m_{K_L}-m_{K_S}$ and the amplitude for the rare-kaon decay processes $K\\to\\pi\\ell^+\\ell^-$, where the lepton $\\ell=e$ or $\\mu$. Lattice calculations of the long-distance contributions to the indirect $CP$-violating parameter $\\epsilon_K$ and to the rare decays $K\\to\\pi\

  4. Taming the Goldstone contributions to the effective potential

    NASA Astrophysics Data System (ADS)

    Martin, Stephen P.

    2014-07-01

    The standard perturbative effective potential suffers from two related problems of principle involving the field-dependent Goldstone boson squared mass, G. First, in general G can be negative, and it actually is negative in the Standard Model; this leads to imaginary contributions to the effective potential that are not associated with a physical instability, and therefore spurious. Second, in the limit that G approaches zero, the effective potential minimization condition is logarithmically divergent already at two-loop order, and has increasingly severe power-law singularities at higher loop orders. I resolve both issues by resumming the Goldstone boson contributions to the effective potential. For the resulting resummed effective potential, the minimum value and the minimization condition that gives the vacuum expectation value are obtained in forms that do not involve G at all.

  5. Long-distance contributions to flavour-changing processes

    E-print Network

    Sachrajda, C

    2015-01-01

    Standard lattice calculations in flavour physics or in studies of hadronic structure are based on the evaluation of matrix elements of local composite operators between hadronic states or the vacuum. In this talk I discuss developments aimed at the computation of long-distance, and hence non-local, contributions to such processes. In particular, I consider the calculation of the $K_L$-$K_S$ mass difference $\\Delta m_K=m_{K_L}-m_{K_S}$ and the amplitude for the rare-kaon decay processes $K\\to\\pi\\ell^+\\ell^-$, where the lepton $\\ell=e$ or $\\mu$. Lattice calculations of the long-distance contributions to the indirect $CP$-violating parameter $\\epsilon_K$ and to the rare decays $K\\to\\pi\

  6. SYLLABUS: PHYSICS 8120 PLASMA PHYSICS SPRING 2005

    E-print Network

    Wiita, Paul J.

    SYLLABUS: PHYSICS 8120 PLASMA PHYSICS SPRING 2005 Instructor: Prof. Paul J. Wiita Class Timings at an appropriate level. Other texts to which you may wish to refer: 1) Peter A. Sturrock, Plasma Physics 2) Nicholas A. Krall & Alvin W. Trivelpiece, Principles of Plasma Physics 3) Lyman Spitzer, Jr., Physics

  7. SPIN Physics at GSI

    E-print Network

    Frank Rathmann

    2005-01-25

    Polarized antiprotons produced by spin filtering with an internal polarized gas target provide access to a wealth of single-- and double--spin observables, thereby opening a window to physics uniquely accessible with the HESR at FAIR. This includes a first measurement of the transversity distribution of the valence quarks in the proton, a test of the predicted opposite sign of the Sivers--function, related to the quark distribution inside a transversely polarized nucleon, in Drell--Yan (DY) as compared to semi--inclusive DIS, and a first measurement of the moduli and the relative phase of the time--like electric and magnetic form factors G_{E,M} of the proton. In polarized and unpolarized proton--antiproton elastic scattering open questions like the contribution from the odd charge--symmetry Landshoff--mechanism at large |t| and spin--effects in the extraction of the forward scattering amplitude at low |t| can be addressed.

  8. The Future of Theoretical Physics and Cosmology

    NASA Astrophysics Data System (ADS)

    Gibbons, G. W.; Shellard, E. P. S.; Rankin, S. J.

    2003-11-01

    Based on lectures given in honor of Stephen Hawking's 60th birthday, this book comprises contributions from the world's leading theoretical physicists. Popular lectures progress to a critical evaluation of more advanced subjects in modern cosmology and theoretical physics. Topics covered include the origin of the universe, warped spacetime, cosmological singularities, quantum gravity, black holes, string theory, quantum cosmology and inflation. The volume provides a fascinating overview of the variety of subjects to which Stephen Hawking has contributed.

  9. Gender and ethnic disparities contributing to overweight in California adolescents

    Microsoft Academic Search

    Mary Ellen Wilkosz; Jyu-Lin Chen; Christine Kennedy; Sally Rankin

    2010-01-01

    Purpose  To explore differences in health behaviors and factors contributing to overweight among 12 to 17 year olds in California.\\u000a \\u000a \\u000a \\u000a Methods  Data from the 2005 California Health Interview Survey for 3,315 adolescents self-identified as Latino, Asian, or white were\\u000a reviewed. Adolescents reported their weight, height, gender, ethnicity, parents’ educational level, household income, physical\\u000a activity, sedentary activity, breakfast consumption, and family meals.\\u000a \\u000a \\u000a \\u000a \\u000a Results  Overall 34%

  10. Summer School on Interstellar Processes: Abstracts of contributed papers

    NASA Technical Reports Server (NTRS)

    Hollenbach, D. J. (editor); Thronson, H. A., Jr. (editor)

    1986-01-01

    The Summer School on Interstellar Processes was held to discuss the current understanding of the interstellar medium and to analyze the basic physical processes underlying interstellar phenomena. Extended abstracts of the contributed papers given at the meeting are presented. Many of the papers concerned the local structure and kinematics of the interstellar medium and focused on such objects as star formation regions, molecular clouds, HII regions, reflection nebulae, planetary nebulae, supernova remnants, and shock waves. Other papers studied the galactic-scale structure of the interstellar medium either in the Milky Way or other galaxies. Some emphasis was given to observations of interstellar grains and

  11. ISO's Contribution to the Study of Clusters of Galaxies

    NASA Astrophysics Data System (ADS)

    Metcalfe, Leo; Fadda, Dario; Biviano, Andrea

    2005-08-01

    Starting with nearby galaxy clusters like Virgo and Coma, and continuing out to the furthest galaxy clusters for which ISO results have yet been published (z = 0.56), we discuss the development of knowledge of the infrared and associated physical properties of galaxy clusters from early IRAS observations, through the “ISO-era” to the present, in order to explore the status of ISO's contribution to this field. Relevant IRAS and ISO programmes are reviewed, addressing both the cluster galaxies and the still-very-limited evidence for an infrared-emitting intra-cluster medium.

  12. Department Of Physics And

    E-print Network

    Crowther, Paul

    304 MPhys Physics with study in Australasia AAA F344 BSc Theoretical Physics AAB F321 MPhys Theoretical Physics AAA FV35 BSc Physics and Philosophy AAB BSc/MPhys Physics with a Foundation Year ABB YEAROur Physics Courses. The Department Of Physics And Astronomy. #12;CONTENTS Courses How we teach 4

  13. Using internet assessment tools for health and physical education instruction

    Microsoft Academic Search

    Roland Thornburg; Kory Hill

    2004-01-01

    Conclusions  Physical education should provide opportunities for students to participate in activities that promote fitness and well-being.\\u000a Implementing best practices into the physical education curriculum can contribute to the understanding and application of\\u000a a healthy lifestyle for students. Technology applied in the physical education curriculum can provide an opportunity for improved\\u000a instruction and enhanced student learning in physical education. The current

  14. Higgs Physics

    E-print Network

    M. Krämer; M. Muhlleitner

    2015-02-23

    We discuss the interpretation of the LHC Higgs data and the test of the Higgs mechanism. This is done in a more model-independent approach relying on an effective Lagrangian, as well as in specific models like composite Higgs models and supersymmetric extensions of the Standard Model. The proper interpretation of the data requires the inclusion of higher-order corrections both for the relevant Higgs parameters and the production and decay processes. We review recent results obtained within the Collaborative Research Centre / Transregio 9 "Computational Particle Physics".

  15. Physics Discoveries

    NSDL National Science Digital Library

    The Physics Discoveries section of the National Science Foundation (NSF) website brings together a "panoply of discoveries and innovations that began with NSF support." Indeed, it is quite a panoply and visitors will enjoy scrolling through the dozens of resources presented here. The projects profiled include new gene sequencing, celebrations of Marie Curie's birthday, space turbulence studies, and quantum computing. Each of these resources includes a press release, video coverage related to each project, and a set of additional websites. Visitors can also print out relevant materials and share these links via a range of social media tools.

  16. Flipped physics

    NASA Astrophysics Data System (ADS)

    Kettle, Maria

    2013-09-01

    This paper defines flipped learning and then examines its practical implementation in AS and A2 level physics classes, that is, classes for 16-18 year olds. The effect of this teaching style on student learning behaviour and its impact on test results are evaluated. The paper recounts the difficulties of implementing it and evaluates student preferences. It concludes with comments about this teaching style’s appropriateness for various groups of students and identifies those for whom it is not suitable. A list of useful websites is included.

  17. Nonaccelerator physics working group summary

    SciTech Connect

    Ayres, D.S.; Beier, E.W.; Cherry, M.L.; Marciano, W.J.

    1986-01-01

    The Nonaccelerator Physics Working Group set itself the task of predicting the contributions of nonaccelerator experiments to particle physics during the 1990s, in order to assess the needs for new experimental facilities. The main topics studied by the subgroups were: (1) the possibility of doing particle physics experiments with high energy cosmic rays from astrophysical sources; (2) the prospects for experiments which seek to measure the masses of neutrinos and the mixing of neutrino flavors; (3) an examination of the implications for proton decay of recent theoretical developments in grand unified and string theories. Other topics included a survey of magnetic monopole searches, an assessment of future prospects for double-beta-decay and nucleon-decay experiments, and a review of recent progress on neutrino and dark-matter detectors based on quasiparticles in superconductors and phonons in crystals.

  18. 75 FR 41017 - Political Contributions by Certain Investment Advisers

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-07-14

    ...and, within 60 days after learning of the triggering contribution...underwriters (who presumably had deeper pockets for political contributions...underwriters (who presumably had deeper pockets for political contributions...contribution; and (iii) After learning of the contribution:...

  19. The Effects of Physical Attractiveness and Ethnicity on Children's Behavioral Attributions and Peer Preferences

    ERIC Educational Resources Information Center

    Langlois, Judith H.; Stephan, Cookie

    1977-01-01

    Investigates the generality of stereotypes associated with physical attractiveness and assesses the relative contributions of attractiveness and ethnicity in determining children's behavioral attributions and peer preferences. (JMB)

  20. Albe 1998 - La grande Motte 2009 : quelles avancées en diffusion de neutrons aux petits angles en 10 ans ?

    E-print Network

    Isabelle Grillo

    2011-02-07

    The importance of neutron scattering techniques for the characterization of samples in soft condensed matter has been demonstrated all along the present book. The fine understanding of the physical properties is closely linked to progress in the field of instrumentation. This chapter describes the advances over the last decade in technical domains, such as neutron detection, electronics and sample environment. The news software for data reduction and analysis are also discussed before to conclude with the ILL and LLB projects for new instruments.

  1. Contribution aux nombrables de la tradition Bon po : l'Appendive de bsTan 'dzin Rin chen rgyal mtshan a la Sphere de Cristal des Dieux et des Demons de Shar rdza rin po che

    E-print Network

    Achard, Jean-Luc

    2003-01-01

    phyogsbsgrigs zhes bya ba)12.Les thèmes présentés dans ces nombrables relèvent essentiellement de lapratique des Tantras Supérieurs (7e et 8e Véhicules), ainsi que du système dela Grande Perfection (rdzogs chen), même si une certaine part de ces nombra-bles se... tradition Bon po 85 qui permet à l’adepte de maîtriser les principes de la Phase de Développe-ment35. 4-2. La Phase de PerfectionDans la tradition Bon po, les traités spécifiquement associés à cette Phase seretrouvent dans le corpus des Tantras-Mères (ma...

  2. Nuclear Physics --- at the frontiers of knowledge

    E-print Network

    Herman Feshbach

    1995-10-10

    (transcript of a talk given by Prof.~Feshbach:) Nuclear physics has been and will be a major factor in science and technology. It makes unique and important contributions to medicine, to industry and to other sciences. Interaction with other physics has been strong. Astrophysics and mesoscopic physics are notable examples. But what I shall talk about today are labeled {\\bf``universals"}. This refers to results which transcend the limits of a given subject providing fundamental principles which inform not only nuclear physics but all of science. It is the universals which take nuclear physics research from the parochial albeit fascinating studies of nuclear reactions and structure to the development and formulation of concepts of significance for all of the physical sciences.

  3. New dipole penguin contribution to K ? ?? decays

    NASA Astrophysics Data System (ADS)

    Eeg, Jan O.; Kumeri?ki, Krešimir; Picek, Ivica

    2008-11-01

    We point out that the standard chromomagnetic penguin dipole operator has a counterpart corresponding to off-shell momenta for external quarks. By employing the chiral quark model, we show that this new dipole penguin operator has the same bosonisation as the standard Q6 operator. Accordingly, this new operator enlarges by ?5% the referent Q6 contribution, which gives the dominant contribution to the CP-violating ratio ?? / ? and also gives an important contribution to the ?I = 1 / 2 amplitude.

  4. The Role of Nuclear Physics in Understanding the Cosmos and the Origin of Elements

    SciTech Connect

    Balantekin, A. B. [Physics Department, University of Wisconsin, Madison WI 53706 (United States)

    2011-05-06

    This popular lecture, given in the conference celebrating contributions of Akito Arima to physics on the occasion of his 80th anniversary, outlines the role of nuclear physics in understanding the origin of elements.

  5. The Role of Nuclear Physics in Understanding the Cosmos and the Origin of Elements

    E-print Network

    A. B. Balantekin

    2011-02-04

    This popular lecture, given in the conference celebrating contributions of Akito Arima to physics on the occasion of his 80th anniversary, outlines the role of nuclear physics in understanding the origin of elements.

  6. Zeta Function Regularization in Casimir Effect Calculations and J. S. DOWKER's Contribution

    NASA Astrophysics Data System (ADS)

    Elizalde, Emilio

    2012-06-01

    A summary of relevant contributions, ordered in time, to the subject of operator zeta functions and their application to physical issues is provided. The description ends with the seminal contributions of Stephen Hawking and Stuart Dowker and collaborators, considered by many authors as the actual starting point of the introduction of zeta function regularization methods in theoretical physics, in particular, for quantum vacuum fluctuation and Casimir effect calculations. After recalling a number of the strengths of this powerful and elegant method, some of its limitations are discussed. Finally, recent results of the so-called operator regularization procedure are presented.

  7. Zeta Function Regularization in Casimir Effect Calculations and J. S. Dowker's Contribution

    NASA Astrophysics Data System (ADS)

    Elizalde, Emilio

    2012-07-01

    A summary of relevant contributions, ordered in time, to the subject of operator zeta functions and their application to physical issues is provided. The description ends with the seminal contributions of Stephen Hawking and Stuart Dowker and collaborators, considered by many authors as the actual starting point of the introduction of zeta function regularization methods in theoretical physics, in particular, for quantum vacuum fluctuation and Casimir effect calculations. After recalling a number of the strengths of this powerful and elegant method, some of its limitations are discussed. Finally, recent results of the so called operator regularization procedure are presented.

  8. 31 CFR 595.408 - Charitable contributions.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY TERRORISM SANCTIONS REGULATIONS Interpretations § 595.408 Charitable contributions. (a) Unless specifically...

  9. Communities of on-line physics educators

    NASA Astrophysics Data System (ADS)

    MacIsaac, Dan

    2000-04-01

    I briefly describe the nature, content, scope, history, and culture of PHYS-L and related electronic mailing lists dedicated to the teaching and learning of physics (including PHYSHARE, TAP-L and PhysLrnR). I also describe etiquette and writing guidelines for contributing to discussions on mailing lists. Finally, I review technical guidelines for controlling physics list subscriptions and related archive software.

  10. 26 CFR 1.72(e)-1T - Treatment of distributions where substantially all contributions are employee contributions...

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ...Treatment of distributions where substantially all contributions are employee contributions...Treatment of distributions where substantially all contributions are employee contributions...section 72 and under which substantially all of the contributions are employee...

  11. 26 CFR 1.72(e)-1T - Treatment of distributions where substantially all contributions are employee contributions...

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ...Treatment of distributions where substantially all contributions are employee contributions...Treatment of distributions where substantially all contributions are employee contributions...section 72 and under which substantially all of the contributions are employee...

  12. 26 CFR 1.72(e)-1T - Treatment of distributions where substantially all contributions are employee contributions...

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ...Treatment of distributions where substantially all contributions are employee contributions...Treatment of distributions where substantially all contributions are employee contributions...section 72 and under which substantially all of the contributions are employee...

  13. 26 CFR 1.72(e)-1T - Treatment of distributions where substantially all contributions are employee contributions...

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ...Treatment of distributions where substantially all contributions are employee contributions...Treatment of distributions where substantially all contributions are employee contributions...section 72 and under which substantially all of the contributions are employee...

  14. 26 CFR 1.72(e)-1T - Treatment of distributions where substantially all contributions are employee contributions...

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ...Treatment of distributions where substantially all contributions are employee contributions...Treatment of distributions where substantially all contributions are employee contributions...section 72 and under which substantially all of the contributions are employee...

  15. Introductory physics in biological context: An approach to improve introductory physics for life science students

    NASA Astrophysics Data System (ADS)

    Crouch, Catherine H.; Heller, Kenneth

    2014-05-01

    We describe restructuring the introductory physics for life science students (IPLS) course to better support these students in using physics to understand their chosen fields. Our courses teach physics using biologically rich contexts. Specifically, we use examples in which fundamental physics contributes significantly to understanding a biological system to make explicit the value of physics to the life sciences. This requires selecting the course content to reflect the topics most relevant to biology while maintaining the fundamental disciplinary structure of physics. In addition to stressing the importance of the fundamental principles of physics, an important goal is developing students' quantitative and problem solving skills. Our guiding pedagogical framework is the cognitive apprenticeship model, in which learning occurs most effectively when students can articulate why what they are learning matters to them. In this article, we describe our courses, summarize initial assessment data, and identify needs for future research.

  16. Lattice QCD Studies of the Leading Order Hadronic Contribution to the Muon $g-2$

    E-print Network

    Anthony Francis; Vera Gülpers; Gregorio Herdoíza; Georg von Hippel; Hanno Horch; Benjamin Jäger; Harvey B. Meyer; Eigo Shintani; Hartmut Wittig

    2014-12-23

    The anomalous magnetic moment of the muon, $g_\\mu-2$, is one of the most promising observables to identify hints for physics beyond the Standard Model. QCD contributions are currently responsible for the largest fraction of the overall theoretical uncertainty in $g_\\mu-2$. The possibility to determine these hadronic contributions from first principles through lattice QCD calculations has triggered a number of recent studies. Recent proposals to improve the accuracy of lattice determinations are reported. We present an update of our studies of the leading-order hadronic contribution to $g_\\mu-2$ with improved Wilson fermions.

  17. Research Plan for Spin Physics at RHIC 1 Executive Summary (by Gerry)

    E-print Network

    Ohta, Shigemi

    spin program. The Department of Energy's Office of Nuclear Physics Science and Technology Review and Nuclear Physics, to create this plan. The RHIC spin physics program contributes to a developingResearch Plan for Spin Physics at RHIC Abstract #12;1 Executive Summary (by Gerry) Briefly describe

  18. Sigle Dpartement Gr. Titre Enseignant Jour Date Heure Local Nb Rpartition ADM502 Pharmacologie 01 Initiation aux affaires en pharmacologie Beaudoin, Philippe vendredi 03-oct 09h 11h FMSS

    E-print Network

    Vellend, Mark

    Initiation aux affaires en pharmacologie Beaudoin, Philippe vendredi 03-oct 09h à 11h FMSS ALM300 Biologie 01 Nutrition Brouillette, Suzanne mardi 21-oct 10h30 à 12h30 D7-2021 24 Bald à Lépine ALM300 Biologie 01 Nutrition Brouillette, Suzanne mardi 21-oct 10h30 à 12h30 D7-2023 20 Lévesque à Thomas BCL102 Biologie 01

  19. Le dpartement d'Etudes Slaves de l'Universit Blaise Pascal propose aux tudiants un parcours complet en tudes russes depuis la premire anne de Licence. Le cursus de russe

    E-print Network

    Sart, Remi

    · Le département d'Etudes Slaves de l'Université Blaise Pascal propose aux étudiants un parcours étudiantes ont toutes deux préparé un Master 1 d'études Russophones toujours à l'Université Blaise Pascal. L toujours à l'Université Blaise Pascal et occupe conjointement un emploi à mi-temps tandis que l

  20. Travailleurs âgés, nouvelles technologies et changements organisationnels : un réexamen à partir de l'enquête « Reponse ». Suivi d'un commentaire de Luc Behaghel : emploi des seniors - Des effets du changement technologique aux recommandations

    Microsoft Academic Search

    Patrick Aubert; Luc Behaghel; Sévane Ananian

    2006-01-01

    [fre] L'adoption par les entreprises d'innovations technologiques (micro-ordinateur, internet), de changements organisationnels ou leur ouverture au marché international posent la question de l'adaptation des travailleurs âgés (seniors) : les entreprises concernées évincent-elles plus souvent ou non les seniors de leur main-d'oeuvre ? L'analyse du stock d'emploi en 1998 confirme l'hypothèse d'un biais de ces changements défavorable aux seniors. Dans l'industrie

  1. Cooperatives' contributions to a plural economy

    E-print Network

    Paris-Sud XI, Université de

    23 Cooperatives' contributions to a plural economy Jérôme Blanc* and Denis Colongo** T he European economy(1) . The central theme of the conference was the contributions of cooperatives to a plural economy and solidarity economy and elsewhere, and some of them draw on Karl Polanyi's conceptual framework (a key

  2. Capabilities and Contributions of Unwed Fathers

    ERIC Educational Resources Information Center

    Lerman, Robert I.

    2010-01-01

    Young, minority, and poorly educated fathers in fragile families have little capacity to support their children financially and are hard-pressed to maintain stability in raising those children. In this article, Robert Lerman examines the capabilities and contributions of unwed fathers, how their capabilities and contributions fall short of those…

  3. Factors Contributing to Institutions Achieving Environmental Sustainability

    ERIC Educational Resources Information Center

    James, Matthew; Card, Karen

    2012-01-01

    Purpose: The purpose of this paper is to determine what factors contributed to three universities achieving environmental sustainability. Design/methodology/approach: A case study methodology was used to determine how each factor contributed to the institutions' sustainability. Site visits, fieldwork, document reviews, and interviews with…

  4. Value Contributed by Education in IT Firms

    Microsoft Academic Search

    Rajiv Banker; Sunil Wattal; Fang-Chun Liu; Chin-Shyh Ou

    2008-01-01

    An educated workforce is critical to IT firms’ ability to innovate and compete in the market. Surprisingly, there is very little research on how education contributes to the profitability of IT firms and how educated employees contribute to a firms’ research and development activities. Using theories from human capital literature, we propose a model to measure how aggregate firm level

  5. Assessing academic contributions in landscape architecture

    Microsoft Academic Search

    Lee-Anne S. Milburn; Robert D. Brown; Susan J. Mulley; Stewart G. Hilts

    2003-01-01

    There is an increasing demand for research in landscape architecture to inform design decision making. The role of the faculty in departments of landscape architecture has changed from one of educating professionals to one that includes contributing to research and to the development of the discipline. This paper develops a framework for assessing the contribution of faculty in landscape architecture.

  6. Contributions of Psychology to War and Peace

    ERIC Educational Resources Information Center

    Christie, Daniel J.; Montiel, Cristina J.

    2013-01-01

    The contributions of American psychologists to war have been substantial and responsive to changes in U.S. national security threats and interests for nearly 100 years. These contributions are identified and discussed for four periods of armed conflict: World Wars I and II, the Cold War, and the Global War on Terror. In contrast, about 50 years…

  7. Original article Contribution of erythrocytes and plasma

    E-print Network

    Paris-Sud XI, Université de

    Original article Contribution of erythrocytes and plasma in threonine and lysine transfer across -- Contributions of erythrocytes and plasma to threonine and lysine transport across the PDV and the liver were appearing in the PV and in the HV are trans- ported by the plasma. Our results suggest that erythrocytes

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

    NASA Technical Reports Server (NTRS)

    Jagielski, J. M.

    1994-01-01

    The DET/MPS programs model and simulate the Direct Energy Transfer and Multimission Spacecraft Modular Power System in order to aid both in design and in analysis of orbital energy balance. Typically, the DET power system has the solar array directly to the spacecraft bus, and the central building block of MPS is the Standard Power Regulator Unit. DET/MPS allows a minute-by-minute simulation of the power system's performance as it responds to various orbital parameters, focusing its output on solar array output and battery characteristics. While this package is limited in terms of orbital mechanics, it is sufficient to calculate eclipse and solar array data for circular or non-circular orbits. DET/MPS can be adjusted to run one or sequential orbits up to about one week, simulated time. These programs have been used on a variety of Goddard Space Flight Center spacecraft projects. DET/MPS is written in FORTRAN 77 with some VAX-type extensions. Any FORTRAN 77 compiler that includes VAX extensions should be able to compile and run the program with little or no modifications. The compiler must at least support free-form (or tab-delineated) source format and 'do do-while end-do' control structures. DET/MPS is available for three platforms: GSC-13374, for DEC VAX series computers running VMS, is available in DEC VAX Backup format on a 9-track 1600 BPI tape (standard distribution) or TK50 tape cartridge; GSC-13443, for UNIX-based computers, is available on a .25 inch streaming magnetic tape cartridge in UNIX tar format; and GSC-13444, for Macintosh computers running AU/X with either the NKR FORTRAN or AbSoft MacFORTRAN II compilers, is available on a 3.5 inch 800K Macintosh format diskette. Source code and test data are supplied. The UNIX version of DET requires 90K of main memory for execution. DET/MPS was developed in 1990. A/UX and Macintosh are registered trademarks of Apple Computer, Inc. VMS, DEC VAX and TK50 are trademarks of Digital Equipment Corporation. UNIX is a registered trademark of AT&T Bell Laboratories.

  9. Physics and Philosophy 1 Physics and Philosophy

    E-print Network

    are required, including PHIL 125 and 126, one course in logic above the introductory level, and a PhilosophyPhysics and Philosophy 1 Physics and Philosophy Directors of undergraduate studies: John Harris (Physics), 311 WNSL-W, 432-3601, dus.physics@yale.edu; Kenneth Winkler (Philosophy), 406A C, 432

  10. SYLLABUS: PHYSICS 8120 PLASMA PHYSICS FALL 2007

    E-print Network

    Wiita, Paul J.

    SYLLABUS: PHYSICS 8120 PLASMA PHYSICS FALL 2007 Instructor: Prof. Paul J. Wiita Class Timings time. Required Text: Russell M. Kulsrud, Plasma Physics for Astrophysics (Princeton University Press A. Sturrock, Plasma Physics 3) Nicholas A. Krall & Alvin W. Trivelpiece, Principles of Plasma

  11. SYLLABUS: PHYSICS 8120 PLASMA PHYSICS FALL 2007

    E-print Network

    Wiita, Paul J.

    SYLLABUS: PHYSICS 8120 PLASMA PHYSICS FALL 2007 Instructor: Prof. Paul J. Wiita Class Timings to see me at some other time. Required Text: Russell M. Kulsrud, Plasma Physics for Astrophysics and Fluids 2) Peter A. Sturrock, Plasma Physics 3) Nicholas A. Krall & Alvin W. Trivelpiece, Principles

  12. Physics 129 Nuclear and Particle Physics

    E-print Network

    California at Santa Cruz, University of

    Physics 129 Nuclear and Particle Physics Winter Quarter 2008 Instructor: David A. Williams (office materials will be distributed on the web site above. Nine texts on nuclear and particle physics, all Nuclear physics, radioactive decays, nuclear models. Properties and classification of the elementary

  13. Physical Plant Strategic Plan 2010 PHYSICAL PLANT

    E-print Network

    Westfall, Peter H.

    Physical Plant Strategic Plan ­ 2010 1 PHYSICAL PLANT 2010 STRATEGIC PLAN Strategic Planning and Assessment Reports MISSION STATEMENT The Physical Plant provides building and service environments conducive Physical Plant will be recognized both within the university and externally as an efficient and effective

  14. Promoting Fun in Physics.

    ERIC Educational Resources Information Center

    Jena, P.

    This document reviews a collection of activities conducted by the Department of Physics at Virginia Commonwealth University to excite young people about physics so that they will be more likely to consider physics as a career. The Society of Physics Students performs demonstrations of physics experiments for Virginia high school physics classes…

  15. Quantum electroweak symmetry breaking through loop quadratic contributions

    NASA Astrophysics Data System (ADS)

    Bai, Dong; Cui, Jian-Wei; Wu, Yue-Liang

    2015-06-01

    Based on two postulations that (i) the Higgs boson has a large bare mass mH ?mh ? 125 GeV at the characteristic energy scale Mc which defines the Standard Model (SM) in the ultraviolet region, and (ii) quadratic contributions of Feynman loop diagrams in quantum field theories are physically meaningful, we show that the SM electroweak symmetry breaking is induced by the quadratic contributions from loop effects. As the quadratic running of Higgs mass parameter leads to an additive renormalization, which distinguishes from the logarithmic running with a multiplicative renormalization, the symmetry breaking occurs once the sliding energy scale ? moves from Mc down to a transition scale ? =?EW at which the additive renormalized Higgs mass parameter mH2 (Mc / ?) gets to change the sign. With the input of current experimental data, this symmetry breaking energy scale is found to be ?EW ? 760 GeV, which provides another basic energy scale for the SM besides Mc. Studying such a symmetry breaking mechanism could play an important role in understanding both the hierarchy problem and naturalness problem. It also provides a possible way to explore the experimental implications of the quadratic contributions as ?EW lies within the probing reach of the LHC and the future Great Collider.

  16. Quantum Electroweak Symmetry Breaking Through Loop Quadratic Contributions

    E-print Network

    Dong Bai; Jian-Wei Cui; Yue-Liang Wu

    2015-05-25

    Based on two postulations that (i) the Higgs boson has a large bare mass $m_H \\gg m_h \\simeq 125 $ GeV at the characteristic energy scale $M_c$ which defines the standard model (SM) in the ultraviolet region, and (ii) quadratic contributions of Feynman loop diagrams in quantum field theories are physically meaningful, we show that the SM electroweak symmetry breaking is induced by the quadratic contributions from loop effects. As the quadratic running of Higgs mass parameter leads to an additive renormalization, which distinguishes from the logarithmic running with a multiplicative renormalization, the symmetry breaking occurs once the sliding energy scale $\\mu$ moves from $M_c$ down to a transition scale $\\mu =\\Lambda_{EW}$ at which the additive renormalized Higgs mass parameter $m^2_H(M_c/\\mu)$ gets to change the sign. With the input of current experimental data, this symmetry breaking energy scale is found to be $\\Lambda_{EW}\\simeq 760$ GeV, which provides another basic energy scale for the SM besides $M_c$. Studying such a symmetry breaking mechanism could play an important role in understanding both the hierarchy problem and naturalness problem. It also provides a possible way to explore the experimental implications of the quadratic contributions as $\\Lambda_{EW}$ lies within the probing reach of the LHC and the future Great Collider.

  17. Hermann Weyl: Between Mathematics, Physics, and Philosophy

    NASA Astrophysics Data System (ADS)

    Pesic, Peter

    2008-04-01

    Hermann Weyl introduced gauge theories into physics in the context of his extensions of general relativity. His important mathematical contributions are much better-known than his involvement in philosophy, which was significant as he considered how to respond to Einstein's criticisms of Weyl's unified field theory. Weyl's philosophical approach also affected his own response to quantum theory, very different from Einstein's. The way Weyl dealt with these dilemmas may illuminate this important parting of the ways in theoretical physics and also show how philosophical reflection can be important in dealing with unsolved problems in physics.

  18. Effective Teaching in Physical Education: Slovenian Perspective

    ERIC Educational Resources Information Center

    Pišot, Rado; Plevnik, Matej; Štemberger, Vesna

    2014-01-01

    Regular quality physical education (PE) contributes to the harmonized biopsychosocial development of a young person--to relaxation, neutralization of negative effects of sedentary hours, and other unhealthy habits/behaviors. The evaluation approach to PE effectiveness provides important information to PE teachers and also to students. However,…

  19. Physical requirements of oil combating equipment

    SciTech Connect

    Oebius, H.U.

    1985-01-01

    This contribution tries to classify oil combating equipment like oil barriers or oil skimmers according to their conditions of operations and their functional principles. Moreover physical fundamentals are presented which can be helpful for the decision making process concerning this classification as well as provide the engineer with basic criteria for the design and dimensioning of oil combating devices.

  20. Dr. Akira Tonomura: Master of Experimental Physics

    NASA Astrophysics Data System (ADS)

    Fujikawa, Kazuo

    2014-01-01

    Dr. Akira Tonomura, Hitachi Fellow, passed away on May 2, 2012 at the age of 70. As a classmate at the University of Tokyo and his long-time friend, I would like to describe my personal memory of Tonomura and a brief review of his contributions to fundamental physics.

  1. Aspects of the Physical Chemistry of Starch

    Microsoft Academic Search

    R. Parker; S. G. Ring

    2001-01-01

    Starch makes an important contribution to food structure and hence quality. Often there is a need to modify the behaviour of starch in food materials. One approach is to use knowledge of the physical chemistry of starch to modify component interactions and hence change behaviour. In this review we examine recent research on the phase behaviour and dynamics of starch

  2. Central regulation of physical fatigue via mirror visual feedback

    Microsoft Academic Search

    Ken Tsutsumi; Masaaki Tanaka; Yoshihito Shigihara; Yasuyoshi Watanabe

    2011-01-01

    Central fatigue refers to a progressive decline in the ability to activate muscles voluntarily. Although fatigue-related inhibitory input to the motor cortex from group III and IV afferents that carry sensory information is thought to contribute to the fatigue-related changes in the motor cortex, other sites effectively driving the motor cortex during physical fatigue have not been identified. Contribution of

  3. The physical activity profile of active children in England

    PubMed Central

    2013-01-01

    Background In line with WHO guidelines, the UK government currently recommends that school-aged children participate in at least 60 minutes, and up to several hours, of at least moderate physical activity on a daily basis. A recent health survey indicates that the amount of reported physical activity varies by age, gender and socioeconomic status. The objective of this study is to identify what types of activity contribute most towards overall physical activity in children who achieve the UK physical activity recommendations; and how this varies according to age, gender and socioeconomic status. Methods Self-reported physical activity was captured through the Health Survey for England 2008, a nationally representative, cross-sectional survey. We analysed data from 1,110 children aged 5–15 years who reported meeting the UK physical activity recommendations. The proportions of total physical activity achieved in various domains of activity were calculated and associations with age, gender and socioeconomic status were examined. Results Active play was the largest contributor to overall physical activity (boys?=?48%, girls?=?53%), followed by walking (boys?=?17%, girls?=?23%). Active school travel contributed only a small proportion (6% for boys and girls). With increasing age, the contribution from active play decreased (rho?=?-0.417; p?contribution of walking (rho?=?0.257; p?contributed more among boys than girls. Sport contributed proportionately less with increasing deprivation (rho?=?-0.191; p?physical activity among active children varies with age, socioeconomic status and gender. This knowledge can be used to target interventions appropriately to increase physical activity in children at a population level. PMID:24341402

  4. Snowmelt contributions to discharge of the Ganges.

    PubMed

    Siderius, C; Biemans, H; Wiltshire, A; Rao, S; Franssen, W H P; Kumar, P; Gosain, A K; van Vliet, M T H; Collins, D N

    2013-12-01

    Himalayan headwaters supply large quantities of runoff derived from snowmelt and monsoon rainfall to the Ganges River. Actual snowmelt contribution to discharge in the Ganges remains conjectural under both present and future climatic conditions. As snowmelt is likely to be perturbed through climatic warming, four hydrological models, VIC, JULES, LPJmL and SWAT, appropriate for coupling with regional climate models, were used to provide a baseline estimate of snowmelt contribution to flow at seasonal and annual timescales. The models constrain estimates of snowmelt contributions to between 1% and 5% of overall basin runoff. Snowmelt is, however, significant in spring months, a period in which other sources of runoff are scarce. PMID:23791434

  5. Neutrino Physics

    NASA Astrophysics Data System (ADS)

    Bergström, L.; Hulth, P. O.; Botner, O.; Carlson, P.; Ohlsson, T.

    2006-03-01

    J. N. Bahcall (1934-2005) -- Preface -- List of participants -- Committees -- Nobel symposium on neutrino physics - program -- The history of neutrino oscillations / S. M. Bilenky -- Super-Kamiokande results on neutrino oscillations / Y. Suzuki -- Sudbury neutrino observatory results / A. B. McDonald -- Results from KamLAND reactor neutrino detection / A. Suzuki -- New opportunities for surprise / J. Conrad -- Solar models and solar neutrinos / J. N. Bahcall -- Atmospheric neutrino fluxes / T. K. Gaisser -- The MSW effect and matter effects in neutrino oscillations / A. Yu. Smirnov -- Three-flavour effects and CP- and T-violation in neutrino oscillations / E. Kh. Akhmedov -- Global analysis of neutrino data / M. C. Gonzalez-Garcia -- Future precision neutrino oscillation experiments and theoretical implications / M. Lindner -- Experimental prospects of neutrinoless double beta decay / E. Fiorini -- Theoretical prospects of neutrinoless double beta decay / S. T. Petcov -- Supernova neutrino oscillations / G. G. Raffelt -- High-energy neutrino astronomy / F. Halzen -- Neutrino astrophysics in the cold: Amanda, Baikal and IceCube / C. Spiering -- Status of radio and acoustic detection of ultra-high energy cosmic neutrinos and a proposal on reporting results / D. Saltzberg -- Detection of neutrino-induced air showers / A. A. Watson -- Prospect for relic neutrino searches / G. B. Gelmini -- Leptogenesis in the early universe / T. Yanagida -- Neutrinos and big bang nucleosynthesis / G. Steigman -- Extra galactic sources of high energy neutrinos / E. Waxman -- Cosmological neutrino bounds for non-cosmologists / M. Tegmark -- Neutrino intrinsic properties: the neutrino-antineutrino relation / B. Kayser -- NuTeV and neutrino properties / M. H. Shaevitz -- Absolute masses of neutrinos - experimental results and future possibilities / C. Weinheimer -- Flavor theories and neutrino masses / P. Ramond -- Neutrino mass models and leptogenesis / S. F. King -- Neutrino mass and grand unification / R. N. Mohapatra.

  6. Long distance contributions in $B\\toK^*\\ell^+\\ell^-$ decays with polarized $K^*$

    E-print Network

    Chuan-Hung Chen; C. Q. Geng

    2002-07-04

    We use momentum correlations as physical observables in $B\\to K^{*}l^{+}l^{-}$ decays with $K^{*}$ polarized to study the long distance contributions. We show that these observables are sensitive to the scenarios of the long distance parametrizations. We find that the T-odd observable is directly related to the nonfactorizable effect in the standard model.

  7. Individual and Joint Contributions of the Cerebral Hemispheres to Language Comprehension

    ERIC Educational Resources Information Center

    Wlotko, Edward Wesley

    2009-01-01

    Normal language comprehension requires contributions from and cooperation of many parts of the brain, ranging from sensory areas that receive the initial physical input, through frontal and temporal areas associated with oft-characterized language subprocesses, to brain areas involved in perspective-taking and social cognition; thus a network of…

  8. Actin-like cytoskeleton filaments contribute to cell mechanics in bacteria

    E-print Network

    Petta, Jason

    Actin-like cytoskeleton filaments contribute to cell mechanics in bacteria Siyuan Wanga,c , Hugo cytoskeleton largely governs the physical shape and mechanical properties of eukaryotic cells. In bacteria in eukaryotes. optical trapping Escherichia coli MreB Like all biological organisms, bacteria must constantly

  9. Measuring and modeling transient insulator response to charging: the contribution of surface potential studies

    Microsoft Academic Search

    Philippe Molinié

    2005-01-01

    What has been the contribution of surface potential studies during the last four decades to our understanding of insulation physics? Which are the promising techniques emerging in this field? The present review covers the industrial context accounting for the development of surface potential measurements on insulating materials, the way they have been implemented, as well as the great variety of

  10. Quark-quark scattering contributions to high-energy total cross sections

    SciTech Connect

    Manley, D.M. [Department of Physics and Center for Nuclear Research, Kent State University, Kent, Ohio 44242 (United States)] [Department of Physics and Center for Nuclear Research, Kent State University, Kent, Ohio 44242 (United States)

    1997-12-01

    It is shown that total hadronic cross sections are described well by considering single- and double-scattering contributions from quark-quark scattering. With an energy-dependent form suggested by Regge theory, all high-energy total cross sections can be fitted successfully and efficiently using a small number of free parameters. {copyright} {ital 1997} {ital The American Physical Society}

  11. Proton structure from multiparticle contribution to elastic pp-scattering at 7 TeV

    E-print Network

    Heller, Barbara

    Proton structure from multiparticle contribution to elastic pp-scattering at 7 TeV I.M. Dremin Lebedev Physical Institute, Moscow 119991, Russia The parton content of protons gets strong peripheral protons. The very first analyses [1, 2, 3] have lead to extremely interesting conclusions about

  12. Comment on ""bulk-plasmon contribution to the work function of metals

    SciTech Connect

    Durakiewicz, Tomasz [Los Alamos National Laboratory; Halas, S [MARIA CURIE-SKLODOWSKA UNIV

    2009-01-01

    Simple derivation of work function of metals based on the bulk-plasmon contribution is not what it promises to be. Neither is it the first of its kind, nor is it in agreement with experimental data. Incidentally, the physical foundation of the proposed derivation is also incorrect.

  13. Contribution of Community Integration to Quality of Life for Participants of Community Based Adaptive Sport Programs

    Microsoft Academic Search

    Sanghee Chun; Youngkhill Lee; Neil Lundberg; Bryan McCormick; Jinmoo Heo

    The purpose of this study was to examine the contrihution of community integration to quality of life (QOL) for people with disahilities who were the participants of community-based adaptive sport programs. Specifically, it was hypothesized that community integration contributes to physical, psychological, social, and environmental QOL. Out of 240 individuals from the mail- ing list of the Adaptive Sports Center

  14. A "nephrological" approach to physical activity.

    PubMed

    Aucella, Filippo; Gesuete, Antonio; Battaglia, Yuri

    2014-01-01

    Despite consensus among nephrologists that exercise is important and probably beneficial for their patients, assessment of physical function or encouragement of physical activity is not a part of the routine management of patients with CKD. In order to plan an useful strategy for exercise training we need to clearly define some questions. First of all, nephrologists need to be aware of physical exercise benefits; lack of motivation and increased perceived risk by health care professionals have been identified as contributing factors to physical inactivity. Moreover, the main elements necessary for sustaining exercise programs in this population have to take in account, such as the requirement of exercise professionals, equipment and space, individual prescription, adequate commitment from dialysis and medical staff. When PA may not be implemented, a comprehensive, individualized occupational therapy program may improve functional independence and activity of daily living. Finally, physical function has to be careful monitored and assesses by medical staff. PMID:25118037

  15. BOOK REVIEW: Complete Physics

    NASA Astrophysics Data System (ADS)

    Carson, Simon

    2000-03-01

    This book contains all the essential concepts for GCSE (or equivalent) physics courses or for general science courses at Key Stage 4. It claims to be ideal for use as a bridging resource for those intending to take physics beyond GCSE: it is no surprise, then, that the book is written at a level above that of the average Key Stage 4 student. It includes material not included in many GCSE syllabuses; this is clearly identified in the contents pages. It would be a useful resource for more able students at GCSE or for beginning A-level students. The layout of the book is attractive. It is well illustrated and colourful. Some of the illustrations are striking: each of the 12 main sections of the book begins with a title page that includes some unusual photographs illustrating physical ideas. Section 2, Forces and Motion, has a photograph of a bungee jumper leaping from the Sky Tower in New Zealand, taken at night looking along the length of the tower from its foot. Section 9, Magnets and Currents, has a computer-generated picture of the magnetic field in a fusion generator. These pictures, as well as contributing to the attractiveness of the book, could be used to initiate discussions of some of the physics. However, there are pictures that serve little useful purpose: a photograph of a recording station for seismic waves looks like any other building lit up at night. A photograph of a rock band in the middle of a section on sound carries no explanatory caption at all and is purely decorative. Other illustrations - in a variety of styles - do illustrate some physical ideas very well: the diagrams of motors and generators, for instance, are far clearer than my efforts on the blackboard! The book is divided into 14 sections with titles reflecting the traditional divisions of physics syllabuses, together with a beginning section on measurement and units and two final sections, `History of Key Ideas' and `Experimental Physics'. The first section, `Measurement and Units', begins with an emphasis on the correct use of units in calculations that is very good (although again only really appropriate for more able students) and considers scientific notation and SI units. The use of triangles for rearranging three variable equations is introduced without any discussion of how to do the algebra properly. I found this rather out of place in a book of this level; I should personally hope to see those intending to pursue the subject beyond GCSE capable of rearranging equations without recourse to methods which convey no understanding of the physical relationship. The section on the `History of Key Ideas' has a double page spread on `Forces, Motion and Energy', `Rays, Waves and Particles' and `The Earth and Beyond', followed by a chronology of physics from 400 BC to 1990. These sections are necessarily very brief. The final section, `Experimental Physics', has some useful reminders for students about investigative work and a photocopiable checklist. The book has some very attractive features. Most pages include a boxed list of `essentials' that are useful either in skimming the text to find useful information or in revision. Each double page spread into which the material is arranged includes some fairly straightforward questions to test the basic ideas. Each section ends with a set of examination questions and with a checklist of ideas that can be photocopied for students to tick off what has been covered. The contents pages of the book may also be photocopied for students to check their progress. Given that this is a brand new book, I found the inclusion of a spread on ticker-tape rather old-fashioned: video is a much better way of analysing motion. The language of the text, too, can be rather dry and academic, and the organization reflects a traditional approach to the physics curriculum. The book would be most useful, I think, to able students studying single-subject physics courses at GCSE or to those beginning A-level. At £14.00 a copy, it is too expensive for me to use within a coordinated science scheme. The spreads provide usefu

  16. 24 CFR 92.219 - Recognition of matching contribution.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ...2011-04-01 2011-04-01 false Recognition of matching contribution. 92.219...Contribution Requirement § 92.219 Recognition of matching contribution. (a...The following requirements apply for recognition of matching contributions made to...

  17. 24 CFR 92.219 - Recognition of matching contribution.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ...2010-04-01 2010-04-01 false Recognition of matching contribution. 92.219...Contribution Requirement § 92.219 Recognition of matching contribution. (a...The following requirements apply for recognition of matching contributions made to...

  18. 20 CFR 345.113 - Execution of contribution reports.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ...CONTRIBUTIONS AND CONTRIBUTION REPORTS Reporting and Collecting... Execution of contribution reports. (a) Each contribution report on Form DC-1 shall be signed...an individual; (2) The president, vice president, or...

  19. 20 CFR 345.113 - Execution of contribution reports.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ...CONTRIBUTIONS AND CONTRIBUTION REPORTS Reporting and Collecting... Execution of contribution reports. (a) Each contribution report on Form DC-1 shall be signed...an individual; (2) The president, vice president, or...

  20. 20 CFR 345.113 - Execution of contribution reports.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ...CONTRIBUTIONS AND CONTRIBUTION REPORTS Reporting and Collecting... Execution of contribution reports. (a) Each contribution report on Form DC-1 shall be signed...an individual; (2) The president, vice president, or...