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1

Hermann Weyl's Contribution to Physics  

NASA Astrophysics Data System (ADS)

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...

Yang, Chen Ning

2013-05-01

2

Contributions of Egyptian Women in Physics (abstract)  

NASA Astrophysics Data System (ADS)

Physics is a dynamic, global field. Progress in research motivates scientists to explore new areas and find useful applications for their work. Femtosecond ultrashort pulsed lasers and progress in nanostructures to study the properties of extremely dense matter, as well as one-dimensional materials, are two examples of innovations that encourage students and scientists—male and female—to pursue physics. Young Egyptian women's contributions to physics grew from 46% in 2003 to 69% in 2008. This paper discusses the role of women in physics in Egypt; presents statistics regarding their contributions and presence at Egyptian universities and institutes; and gives information about their decision making leadership roles. Ideas, applicable in Egypt as well as in developing countries, to address problems facing women are raised.

El Nadi, Lotfia

2009-04-01

3

Beauty and physics: 13 important contributions of Chen Ning Yang  

NASA Astrophysics Data System (ADS)

In 2012, Chen Ning Yang received a 90th birthday gift in the form of a black cube inscribed with his 13 most important contributions, which cover four major areas of physics: statistical mechanics, condensed matter physics, particle physics and field theory. We briefly describe these 13 contributions and make general comments about Yang's distinctive style as a trailblazing leader in research.

Shi, Yu

2014-06-01

4

The soil physics contributions of Edgar Buckingham  

USGS Publications Warehouse

During 1902 to 1906 as a soil physicist at the USDA Bureau of Soils (BOS), Edgar Buckingham originated the concepts of matric potential, soil-water retention curves, specific water capacity, and unsaturated hydraulic conductivity (K) as a distinct property of a soil. He applied a formula equivalent to Darcy's law (though without specific mention of Darcy's work) to unsaturated flow. He also contributed significant research on quasi-empirical formulas for K as a function of water content, water flow in capillary crevices and in thin films, and scaling. Buckingham's work on gas flow in soils produced paradigms that are consistent with our current understanding. His work on evaporation elucidated the concept of self-mulching and produced sound and sometimes paradoxical generalizations concerning conditions that favor or retard evaporation. Largely overshadowing those achievements, however, is that he launched a theory, still accepted today, that could predict transient water content as a function of time and space. Recently discovered documents reveal some of the arguments Buckingham had with BOS officials, including the text of a two-paragraph conclusion of his famous 1907 report on soil water, and the official letter documenting rejection of that text. Strained interpersonal relations motivated the departure of Buckingham and other brilliant physicists (N.E. Dorsey, F.H. King, and Lyman Briggs) from the BOS during 1903 to 1906. Given that Buckingham and his BOS colleagues had been rapidly developing the means of quantifying unsaturated flow, these strained relations probably slowed the advancement of unsaturated flow theory. ?? Soil Science Society of America.

Nimmo, J. R.; Landa, E. R.

2005-01-01

5

Children's Physical Activity: The Contribution of Playing and Walking  

ERIC Educational Resources Information Center

This paper draws on research in which 200 children were fitted with motion sensors and asked to keep travel and activity diaries. The findings show that walking and playing away from home can contribute significantly to children's volume of physical activity, with consequent implications for their health. Not only do both playing and walking…

Mackett, Roger L.; Paskins, James

2008-01-01

6

Contribution of Athletic Identity to Child and Adolescent Physical Activity  

PubMed Central

Background Identity theorists maintain that domain-specific self-concepts help explain the differential investment of people’s time and effort in various activities. Purpose This study examined the contribution of athletic identity and three key demographic variables to physical activity and sports team participation. Methods Students in Grades 4–5 (n=391, mean age 9.9 years, range 8–13 years, collected in 2003) and Grades 7–8 (n=948, mean age 13.6 years, range 11–15 years, collected in 2002 and 2006) completed the 40-item Athletic Identity Questionnaire, which measures self-perceptions of athletic appearance; competence; importance of physical activity and sports; and encouragement for activity from parents, teachers, and friends. Hierarchic multiple regression analyses in 2008 assessed the effects of athletic identity, race/ethnicity group, gender, and overweight status on 7-day moderate-to-vigorous physical activity (MVPA) and organized sport team participation in each age group. Results In children and adolescents, the global score of athletic identity was independently, positively related to MVPA (p<0.0001, p<0.0001, respectively) and team participation (p<0.0001, p<0.0001, respectively), after controlling for demographic variables. More variance in MVPA was explained in children (23%) than in adolescents (5%), in contrast to team sports (5% in children, 15% in adolescents). In the subscale analyses, positive relationships for appearance, competence, importance, and parental encouragement persisted independent of demographic factors. Conclusions Results support the role of athletic self-concept in promoting physical activity and organized sport participation in children and adolescents. PMID:19595559

Anderson, Cheryl B.; Mâsse, Louise C.; Zhang, Hong; Coleman, Karen J.; Chang, Shine

2009-01-01

7

Physics Teacher Preparation Contributes More Than Additional Graduates  

NSDL National Science Digital Library

Physics departments across the country are facing pressure to increase the number of graduates. Some of the more successful efforts have involved curriculum and programming changes geared toward particular career paths. Students want to know what they can do with a physics degree, and "anything you want" is not a sufficient answer. In response, MTSU Physics and Astronomy recently added high school teaching to our list of concentrations. There is a shortage of high school teachers with credentials in STEM areas in this country â especially in physics â but there are very few physics teachers being produced. We have a situation where there is demand for a product that physics departments have the ability to supply, yet physics departments are not sure how to respond. The APS and AAPT have taken a leadership role by establishing the Physics Teacher Education Coalition to provide resources to universities wishing to better prepare physics teachers. At MTSU, we have found that curriculum and programming changes made to boost the number of physics teachers has resulted in a spill-over effect that benefits other areas in the department.

Henderson, Ron

2012-06-14

8

Hans Bethe's Contributions to Solid-State Physics  

Microsoft Academic Search

Hans Bethe's doctoral research was primarily in solid-state physics. During the late 1920's and early 1930's he played a major role in developing the new quantum theory of solids. Though nuclear physics became his main interest in the mid 1930's, he continued to write papers in solid-state physics into the late 1940's, and remained interested in the subject all his

N. David Mermin; Neil W. Ashcroft

2006-01-01

9

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

E-print Network

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

Fernández de Córdoba, Pedro

10

DCLARATION RELATIVE AUX ACCIDENTS JOINDRE AUX PICES ADMINISTRATIVES DEMANDES  

E-print Network

D�CLARATION RELATIVE AUX ACCIDENTS � JOINDRE AUX PI�CES ADMINISTRATIVES DEMAND�ES POUR LA « responsabilité civile » me couvrant en cas d'accident scolaire (1) - m'engage à m'affilier à compter de la dégage l'université de toute responsabilité en cas d'accident scolaire dont je serais la cause ou la

Sart, Remi

11

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

ERIC Educational Resources Information Center

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…

Bunker, Linda K

1998-01-01

12

Physics of the Gluon-Helicity Contribution to Proton Spin  

NASA Astrophysics Data System (ADS)

The total gluon helicity in a polarized proton, measurable in high-energy scattering, is shown to be the large momentum limit of a gauge-invariant but nonlocal, frame-dependent gluon spin E?×A?? in QCD. This opens a door for a nonperturbative calculation of this quantity in lattice QCD and also justifies using free-field expressions in the light-cone gauge as physical observables.

Ji, Xiangdong; Zhang, Jian-Hui; Zhao, Yong

2013-09-01

13

Pottery Production, Distribution, and Consumption—The Contribution of the Physical Sciences  

Microsoft Academic Search

The study of the life cycle of pottery, from the selection of raw materials and the production stage through distribution and use to ultimate discard, can make a valuable contribution to archaeological research. The aim of the present paper is to provide a summary and critical assessment of the particular contribution of the physical sciences to the reconstruction and interpretation

M. S. Tite

1999-01-01

14

NASA/Marshall Space Flight Center's Contributions to Space Plasma Physics  

NASA Technical Reports Server (NTRS)

Since the mid-l970's, the Space Plasma Physics Group at NASA's Marshall Space Flight Center has contributed critical instrumentation to numerous satellite and sounding rocket missions exploring the plasmas of near-Earth space. This talk will review major discoveries in Earth's ionosphere, plasmasphere, and magnetosphere directly attributable to the researchers of the Space Plasma Physics Group and the significance of these discoveries to the field of plasma physics.

Adrian, M. L.; Six, N. Frank (Technical Monitor)

2002-01-01

15

Friluftsliv: a contribution to equity and democracy in Swedish Physical Education? An analysis of codes in Swedish Physical Education curricula  

Microsoft Academic Search

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 the potential to contribute to more equity in PE teaching.

Erik Backman

2011-01-01

16

III -INTRODUCTION AUX TESTS STATISTIQUES  

E-print Network

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

Croisille, Jean-Pierre

17

Feminisms and Figurational Sociolo Contributions to Understandings of Sports, Physical Education and Sex\\/Gender  

Microsoft Academic Search

This paper seeks to examine the relationship between various sports feminisms and figurational sociology. A number of feminist and figurational contributions to understandings of sports, physical education and sex\\/gender are discussed, and their relative adequacy considered. The key differences between feminist and figurational approaches are highlighted, particularly in relation to the role of values in sociology. Particular attention is paid

Sharon Colwell

1999-01-01

18

The contribution of walking to work to adult physical activity levels: a cross sectional study  

PubMed Central

Objective To objectively examine the contribution to adult physical activity levels of walking to work. Methods Employees (n = 103; 36.3 ± 11.7 years) at 17 workplaces in south-west England, who lived within 2 miles (3.2 km) of their workplace, wore Actigraph accelerometers for seven days during waking hours and carried GPS receivers during the commute to and from work. Physical activity volume (accelerometer counts per minute (cpm)) and intensity (minutes of moderate to vigorous physical activity (MVPA)) were computed overall and during the walk to work. Results Total weekday physical activity was 45% higher in participants who walked to work compared to those travelling by car (524.6. ± 170.4 vs 364.6?±?138.4 cpm) and MVPA almost 60% higher (78.1?±?24.9 vs 49.8?±?25.2 minutes per day). No differences were seen in weekend physical activity, and sedentary time did not differ between the groups. Combined accelerometer and GPS data showed that walking to work contributed 47.3% of total weekday MVPA. Conclusions Walking to work was associated with overall higher levels of physical activity in young and middle-aged adults. These data provide preliminary evidence to underpin the need for interventions to increase active commuting, specifically walking, in adults. PMID:24618001

2014-01-01

19

Compliance potential mapping: a tool to assess potential contributions of walking towards physical activity guidelines  

PubMed Central

Background Walking for transport is increasingly considered an important component for meeting physical activity guidelines. This is true for individuals of all ages, and particularly important for seniors, for whom other physical activities may not be recommended. In order to evaluate the potential contributions of walking to physical activity, in this paper the concept of Compliance Potential Mapping is introduced. The concept is illustrated using seniors as a case study. Methods Based on estimates of walking trip distance and frequency, estimates of expected total daily walking distance are obtained. These estimates are converted to weekly walking minutes, which are in turn compared to recommended physical activity guidelines for seniors. Once estimates of travel behavior are available, the approach is straightforward and based on relatively simple map algebra operations. Results Compliance Potential Mapping as a tool to assess the potential contributions of walking towards physical activity is demonstrated using data from Montreal’s 2008 travel survey. The results indicate that the central parts of Montreal Island display higher potential for compliance with physical activity guidelines, but with variations according to age, income, occupation, possession of driver’s license and vehicle, and neighborhood and accessibility parameters. Conclusions Compliance Potential Maps offer valuable information for public health and transportation planning and policy analysis. PMID:24885360

2014-01-01

20

Contribution of the physical environment to socioeconomic gradients in walking in the Whitehall II study.  

PubMed

Socioeconomic gradients in walking are well documented but the underlying reasons remain unclear. We examined the contribution of objective measures of the physical environment at residence to socioeconomic gradients in walking in 3363 participants (50-74years) from the Whitehall II study (2002-2004). Individual-level socioeconomic position was measured as most recent employment grade. The contribution of multiple measures of the physical environment to socioeconomic position gradients in self-reported log transformed minutes walking/week was examined by linear regression. Objective measures of the physical environment contributed only to a small extent to socioeconomic gradients in walking in middle-aged and older adults living in Greater London, UK. Of these, only the number of killed and seriously injured road traffic casualties per km of road was predictive of walking. More walking in areas with high rates of road traffic casualties per km of road may signal an effect not of injury risk but of more central locations with multiple destinations within short distances ('compact neighbourhoods'). This has potential implications for urban planning to promote physical activity. PMID:24637091

Pliakas, Triantafyllos; Wilkinson, Paul; Tonne, Cathryn

2014-05-01

21

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 for his contributions in space plasma physics, condensed matter physics, complexity, and the theory Theory Working Group (SPTWG) and served as a member of the program committee of the Plasma Physics

22

Maladies reliées aux loisirs aquatiques  

PubMed Central

Résumé Objectif Passer en revue les facteurs de risque, la prise en charge et la prévention des maladies reliées aux loisirs aquatiques en pratique familiale. Sources des données Des articles originaux et de synthèse entre janvier 1998 et février 2012 ont été identifiés à l’aide de PubMed et des expressions de recherche en anglais water-related illness, recreational water illness et swimmer illness. Message principal Il y a un risque de 3 % à 8 % de maladies gastrointestinales (MGI) après la baignade. Les groupes à risque élevé de MGI sont les enfants de moins de 5 ans, surtout s’ils n’ont pas été vaccinés contre le rotavirus, les personnes âgées et les patients immunodéficients. Les enfants sont à plus grand risque parce qu’ils avalent plus d’eau quand ils nagent, restent dans l’eau plus longtemps et jouent dans l’eau peu profonde et le sable qui sont plus contaminés. Les adeptes des sports dans lesquels le contact avec l’eau est abondant comme le triathlon et le surf cerf-volant sont aussi à risque élevé et même ceux qui s’adonnent à des activités impliquant un contact partiel avec l’eau comme la navigation de plaisance et la pêche ont un risque de 40 % à 50 % fois plus grand de MGI par rapport à ceux qui ne pratiquent pas de sports aquatiques. Il y a lieu de faire une culture des selles quand on soupçonne une maladie reliée aux loisirs aquatiques et l’échelle clinique de la déshydratation est utile pour l’évaluation des besoins de traitement chez les enfants affectés. Conclusion Les maladies reliées aux loisirs aquatiques est la principale cause de MGI durant la saison des baignades. La reconnaissance que la baignade est une source importante de maladies peut aider à prévenir les cas récurrents et secondaires. On recommande fortement le vaccin contre le rotavirus chez les enfants qui se baignent souvent.

Sanborn, Margaret; Takaro, Tim

2013-01-01

23

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

SciTech Connect

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.

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

2013-07-25

24

The contribution of dance to daily physical activity among adolescent girls  

PubMed Central

Background Structured physical activity (PA) programs are well positioned to promote PA among youth, however, little is known about these programs, particularly dance classes. The aims of this study were to: 1) describe PA levels of girls enrolled in dance classes, 2) determine the contribution of dance classes to total moderate-to-vigorous physical activity (MVPA), and 3) compare PA between days with a dance class (program days) and days without a dance class (non-program days). Methods Participants were 149 girls (11-18 years) enrolled in dance classes in 11 dance studios. Overall PA was assessed with accelerometry for 8 consecutive days, and girls reported when they attended dance classes during those days. The percent contribution of dance classes to total MVPA was calculated, and data were reduced to compare PA on program days to non-program days. Data were analyzed using mixed models, adjusting for total monitoring time. Results Girls engaged in 25.0 ± 0.9 minutes/day of MVPA. Dance classes contributed 28.7% (95% CI: 25.9%-31.6%) to girls' total MVPA. Girls accumulated more MVPA on program (28.7 ± 1.4 minutes/day) than non-program days (16.4 ± 1.5 minutes/day) (p < 0.001). Girls had less sedentary behavior on program (554.0 ± 8.1 minutes/day) than non-program days (600.2 ± 8.7 minutes/day) (p < 0.001). Conclusions Dance classes contributed a substantial proportion (29%) to girls' total MVPA, and girls accumulated 70% more MVPA and 8% less sedentary behavior on program days than on non-program days. Dance classes can make an important contribution to girls' total physical activity. PMID:21816074

2011-01-01

25

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

PubMed Central

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

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

2013-01-01

26

Empowering people, facilitating community development, and contributing to sustainable development: The social work of sport, exercise, and physical education programs  

Microsoft Academic Search

Do sport, exercise, and physical education (SEPE) professionals empower the people they serve and contribute to community development? Do SEPE policies, programs, and practices contribute to sustainable economic and social development, making them worthwhile governmental investments? These questions frame the ensuing analysis. Empowerment-oriented and community-based SEPE programs, and practices may contribute to sustainable development in five related areas. They may

Hal A. Lawson

2005-01-01

27

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

PubMed Central

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

Hayano, Ryugo S.

2010-01-01

28

Contributing to Meaning Making: Facilitating Discourse in the High School Physics Classroom  

NASA Astrophysics Data System (ADS)

The Next Generation Science Standards (NGSS) identify eight practices as essential to science and engineering, and these practices include asking students to construct explanations, to engage in argumentation, and to communicate scientific information. However, few teacher-training programs instruct teachers how to facilitate such discourse in the classroom. Modeling Instruction is one movement in physics education that organizes high school physics content around a small number of student-derived scientific models, and it relies on student discourse for the design, development, and deployment of these models. This research is a self-study of one high school physics teacher's experience facilitating large group discourse in the high school modeling physics classroom. Whiteboard meetings and graded discussions were examined by applying the analytical framework created by Mortimer and Scott (2003) to characterize the classroom talk and the discourse facilitation moves that I employed. In addition, elements of discourse analysis were used to examine some of the tensions that I experienced in the facilitation of this discourse. The findings suggest that deliberate identification of the teaching purposes for the discussion can help determine the scaffolding needed for students to enter the Discourse (Gee, 2011) of being a participant in these large group conversations. In addition, connecting the dialogic dimension of exploring student ideas with the authoritative dimension of introducing the scientific view and supporting the internalization of that view is necessary to contribute to meaning making in the science classroom.

Hovan, Scot Alan

29

Physical contribution of Néel and Brown relaxation to interpreting intracellular hyperthermia characteristics using superparamagnetic nanofluids.  

PubMed

In this work, the AC magnetically-induced heating characteristics of various viscous nanofluids with either soft ferrite (Fe3O4) or hard ferrite (CoFe2O4) superparamagnetic nanoparticles (SPNPs) were investigated to empirically and physically interpret the contribution of "Néel relaxation loss power, P(Néel relaxation loss)," or "Brown relaxation loss power, P(Brown relaxation loss)," to the total AC heat generation of intracellular hyperthermia or in-vivo hyperthermia. It was found that the contribution of P(Brown relaxation loss) to the total AC heating power, P(totaI), and the specific loss power (SLP) was severely affected by the surrounding environment (or in-vivo environment) while the contribution of P(Néel relaxation loss) to the P(total) was independent of the variation of surrounding environment. Furthermore, all the theoretical and experimental results strongly suggested that highly efficacious intracellular hyperthermia (or in-vivo hyperthermia) modality can be achieved by enhancing the P(Néel relaxation loss) rather than the P(Brown relaxation loss) of SPNP agents in nanofluids. PMID:23882824

Jeun, Minhong; Kim, Yu Jeong; Park, Ki Ho; Paek, Sun Ha; Bae, Seongtae

2013-08-01

30

Can exergaming contribute to improving physical activity levels and health outcomes in children?  

PubMed

Physical inactivity among children is a serious public health problem. It has been suggested that high levels of screen time are contributory factors that encourage sedentary lifestyles in young people. As physical inactivity and obesity levels continue to rise in young people, it has been proposed that new-generation active computer- and video-console games (otherwise known as "exergaming") may offer the opportunity to contribute to young people's energy expenditure during their free time. Although studies have produced some encouraging results regarding the energy costs involved in playing active video-console games, the energy costs of playing the authentic versions of activity-based video games are substantially larger, highlighting that active gaming is no substitute for real sports and activities. A small number of exergaming activities engage children in moderate-intensity activity, but most do not. Only 3 very small trials have considered the effects of exergaming on physical activity levels and/or other health outcomes in children. Evidence from these trials has been mixed; positive trends for improvements in some health outcomes in the intervention groups were noted in 2 trials. No adequately powered randomized, controlled trial has been published to date, and no trial has assessed the long-term impact of exergaming on children's health. We now need high-quality randomized, controlled trials to evaluate the effectiveness and sustainability of exergaming, as well as its clinical relevance; until such studies take place, we should remain cautious about its ability to positively affect children's health. PMID:19596728

Daley, Amanda J

2009-08-01

31

i:\\staff\\auxs\\auxs_uho\\common\\forms_current\\correspondence\\pet agreement.doc University Housing  

E-print Network

i:\\staff\\auxs\\auxs_uho\\common\\forms_current\\correspondence\\pet agreement.doc University Housing Cat in their rooms based upon the following conditions: A. The student must register his/her pet prior to the animal Signature Date There is a non-refundable $50 pet fee for cats. Upon registration, staff will place a marker

Bertini, Robert L.

32

KNOWLEDGE MANAGEMENT ET INTELLIGENCE ECONOMIQUE : DEUX NOTIONS AUX PASSES PROCHES ET AUX FUTURS COMPLEMENTAIRES  

E-print Network

KNOWLEDGE MANAGEMENT ET INTELLIGENCE ECONOMIQUE : DEUX NOTIONS AUX PASSES PROCHES ET AUX FUTURS-Nancy Résumé : Les notions de Knowledge Management (KM) et d'Intelligence Economique (IE) partagent un grand futurs probables du KM et de l'IE à l'horizon 2012. Summary : Knowledge Management (KM) and Economic

Paris-Sud XI, Université de

33

Aide aux utilisateurs Nouveaux marchs Voyages et hbergement 2012 AIDE AUX UTILISATEURS  

E-print Network

1 Aide aux utilisateurs Nouveaux marchés Voyages et hébergement 2012 14/11/2012 AIDE AUX UTILISATEURS DANS LE CADRE DES NOVEAUX MARCHES « VOYAGES ET HEBERGEMENT » 2012 Ce document vous permettra de. Comment valider un voyage ? ........................................................................ 9 9

van Tiggelen, Bart

34

Sillitoe, Storey, Hines: their contribution to the sociology of sport and physical education.  

PubMed

The place of sporting activity in literature is reviewed and attention is drawn to the outstanding depth and quality of much of the American writing in this genre. The focus of attention, however, in this paper, is the contribution of contemporary English literature. In recent years a number of novels, short stories and plays have translated sport into dramatic terms as well as placing such action within a recognisable and definable sociological framework. Selected writings by English authors Sillitoe, Storey and Hines are studied and examined to illustrate the many sources available to identify, describe, analyse and complement academic and empirical researches in the sociology of sport and physical education. There is unlimited scope for sports literature (especially in the North American situation) to provide a viable tool for sociological investigation. PMID:533632

Crawford, S A

1979-06-01

35

REFLECTIONS ON MY CONTRIBUTIONS TO PARTICLE PHYSICS AND RECENT EXPERIMENTAL RESULTS FROM RHIC.  

SciTech Connect

My talk today will be composed of two parts. The first part will consist of a summary of some of my experimental contributions over the years. It will not be exhaustive but will highlight the findings that had relevance to the progress of our understanding of particle physics as it has evolved over the years. This section will be divided into three periods: Early, Intermediate and Late, with an in depth discussion of a few of the more significant results. The second part will consist of a discussion of the recently completed Relativistic Heavy Ion Collider (RHIC) machine at Brookhaven National Laboratory (BNL). This will encompass the parameters of the accelerator and some of the interesting and exciting early experimental results emanating from this machine.

SAMIOS,N.P.

2002-01-18

36

[Brazil-Medico and the contributions of medical-hygienist thought to the scientific bases of Brazilian physical education].  

PubMed

The end of the nineteenth century and beginning of the twentieth were emblematic in the 'scientifization' of physical education in Brazil. This examination of the journal Brazil-Medico during 1887-1923 seeks to identify views of the body and health as well as contributions to the scientific bases of physical education in Brazil. PMID:19241681

Mendes, Maria Isabel Brandão de Souza; da Nóbrega, Terezinha Petrucia

2008-01-01

37

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

Microsoft Academic Search

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.

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

1975-01-01

38

The Richness and Beauty of the Physics of Cosmological Recombination: The Contributions from Helium  

E-print Network

The physical ingredients to describe the epoch of cosmological recombination are amazingly simple and well-understood. This fact allows us to take into account a very large variety of processes, still finding potentially measurable consequences. In this contribution we highlight some of the detailed physics that were recently studied in connection with cosmological hydrogen and helium recombination. The impact of these considerations is two-fold: (i) the associated release of photons during this epoch leads to interesting and unique deviations of the Cosmic Microwave Background (CMB) energy spectrum from a perfect blackbody, which, in particular at decimeter wavelength, may become observable in the near future. Despite the fact that the abundance of helium is rather small, it also contributes a sizeable amount of photons to the full recombination spectrum, which, because of differences in the dynamics of the helium recombinations and the non-trivial superposition of all components, lead to additional distinct spectral features. Observing the spectral distortions from the epochs of hydrogen and helium recombination, in principle would provide an additional way to determine some of the key parameters of the Universe (e.g. the specific entropy, the CMB monopole temperature and the pre-stellar abundance of helium), not suffering from limitations set by cosmic variance. Also it permits us to confront our detailed understanding of the recombination process with direct observational evidence. (ii) with the advent of high precision CMB data, e.g. as will be available using the Planck Surveyor or CMBpol, a very accurate theoretical understanding of the ionization history of the Universe becomes necessary for the interpretation of the CMB temperature and polarization anisotropies. (abridged)

R. A. Sunyaev; J. Chluba

2008-02-06

39

New physics contributions to the muon anomalous magnetic moment: A numerical code  

NASA Astrophysics Data System (ADS)

We consider the contributions of individual new particles to the anomalous magnetic moment of the muon, utilizing the generic framework of simplified models. We also present analytic results for all possible one-loop contributions, allowing easy application of these results for more complete models which predict more than one particle capable of correcting the muon magnetic moment. Additionally, we provide a mathematica code to allow the reader to straightforwardly compute any one-loop contribution. Furthermore, we derive bounds on each new particle considered, assuming either the absence of other significant contributions to a? or that the anomaly has been resolved by some other mechanism. The simplified models we consider are constructed without the requirement of SU(2)L invariance, but appropriate chiral coupling choices are also considered. In summary, we found the following particles capable of explaining the current discrepancy, assuming unit couplings: 2 TeV (0.3 TeV) neutral scalar with pure scalar (chiral) couplings, 4 TeV doubly charged scalar with pure pseudoscalar coupling, 0.3-1 TeV neutral vector boson depending on what couplings are used (vector, axial, or mixed), 0.5-1 TeV singly charged vector boson depending on which couplings are chosen, and 3 TeV doubly charged vector-coupled bosons. We also derive the following 1? lower bounds on new particle masses assuming unit couplings and that the experimental anomaly has been otherwise resolved: a doubly charged pseudoscalar must be heavier than 7 TeV, a neutral scalar than 3 TeV, a vector-coupled new neutral boson 600 GeV, an axial-coupled neutral boson 1.5 TeV, a singly charged vector-coupled W' 1 TeV, a doubly charged vector-coupled boson 5 TeV, scalar leptoquarks 10 TeV, and vector leptoquarks 10 TeV. We emphasize that the quoted numbers apply within simplified models, but the reader can easily use our mathematica code to calculate the contribution of their own model of new physics.

Queiroz, Farinaldo S.; Shepherd, William

2014-05-01

40

Combatting cancer in the third millennium--the contribution of medical physics.  

PubMed

In this invited opening Plenary Lecture at the 1st European Conference on Medical Physics, I indicated some of the roles of medical physics, and specifically medical radiation therapy physics, in the development of improved cancer care for the third millennium. It is said that you are only asked to predict the future if you are seriously old and/or will not be around long enough to know if you were correct. Hopefully, however, I will be able to contribute to this field for many years to come and many of my suggestions will be enacted. "Crystal ball gazing" is, however, a very unscientific process. Scientists are trained to study and analyse situations, report their findings and stop at that. "Future gazing" is not predicting the short-term developments; it is about being bold, radical and stating what today is impossible or almost unthinkable. So-called "scientific prophets" can be entertaining (which I also hope I was in this lecture) but at worst look egocentric and possibly ridiculous. I seem to have survived three previous requests to make scientific predictions [Webb S. The future of photon external-beam radiotherapy: the dream and the reality. Physica Medica 2001;17(4):207-15; Webb S. Radiotherapy physics: the next ten years of technical development. Imaging and Oncology 2005;1:43-50; Webb S, Evans PM. Innovative techniques in radiation therapy editorial, overview and crystal ball gaze to the future. In: Webb S, Evans PM, editors. Innovative techniques in radiation therapy. Seminars in Radiation Oncology 2006;16(4):193-8]. I proposed that important progress usually comes from two quite distinct directions. Firstly, there is "big hit science", that is discoveries or inventions so important that the medical world changes forever because of them. These are what people remember, what reaches the media and what make some people household names. These are rare. Secondly, there is "incremental development" which is how the vast majority of scientists work. Small parts of a big problem are dissected out, solved and contribute to the progress of a bigger field. Sometimes the second way leads to the first, often unplanned to be so. To set the scene I briefly told the story of a few famous "big hit science" stories in which medical physicists have played a leading role--the invention of X-ray computed tomography (CT), the development of intensity-modulated radiation therapy (IMRT) and the invention of the emission tomography imaging modalities: single-photon emission computed tomography (SPECT) and positron emission tomography (PET). I suggested some of the areas I consider important for development. Some are fairly easy to identify and others are more speculative and unusual. I suggested that the goal of medicine and supporting science is to ensure that people live long and die quickly and I contrasted this with the past scenarios. Digressing to philosophy I suggested that there may be a difficulty in that the highly developed world works mainly to make itself even more developed and that many developed governments and aspiring medical physicists may not be as interested as they should be in assisting developing countries. There is therefore, sadly, likely to be an ongoing imbalance of resources. Scientific publishing is also at cross roads where the need to act independently, openly and with wide availability clashes somewhat with the need to generate revenue and support learned societies. Turning to detailed observations, I described how I think the following fields can be advanced: (1) improving the diagnosis of disease, (2) improving the planning of radiotherapy, (3) improving the delivery of radiation treatment and (4) improving the assessment of response to treatment. I ended on a highly philosophical note, which is somewhat critical of how much practical medical physics is currently organised in universities and hospitals and I suggested what should be the real agenda for scientific progress. PMID:18295523

Webb, Steve

2008-06-01

41

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

PubMed Central

The plant hormone auxin regulates virtually every aspect of plant growth and development. Auxin acts by binding to the F-box protein TIR1 and promotes the degradation of the 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 appears to be largely determined by the Aux/IAA. As there are 6 TIR1/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

Villalobos, Luz Irina A. Calderon; 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

2012-01-01

42

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

Microsoft Academic Search

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

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

2008-01-01

43

Bourses aux cycles suprieurs Manolo Dulva Hina  

E-print Network

Bourses aux cycles supérieurs Banque Nationale 2007 2008 10 000 $ 10 000 $ 10 000 $ 10 000 $ Manolo 1 500 $ Magdalena Stanescu Doctorat génie FIMQ ­ Bourse Hervé Aubin 2006 5 000 $ Claude Bruxelle

Québec, Université du

44

Pathologie vgtale (synthse) Rsistances aux herbicides  

E-print Network

Pathologie v�g�tale (synth�se) R�sistances aux herbicides chez les mauvaises herbes H Darmency J; accept� le 27 mai 1990) R�sum� — L'usage inconsid�r� des herbicides pour un d�sherbage syst�matique des grandes cultures a conduit � l'apparition de mauvaises herbes r�sistantes. Huit familles d'herbicides

Boyer, Edmond

45

Contribution n 3 CONFRONTATION AUX OBJETS ET PROCESSUS DE  

E-print Network

Nord Pas de Calais ac.mathe@club-internet.fr Introduction Le domaine de la géométrie à l'école primaire'IUFM Nord- Pas-de Calais1 , je souhaite d'abord interroger les conditions permettant d de l'IUFM Nord ­ Pas de Calais, groupe auquel je suis associée depuis septembre 2007, autour de l

Paris-Sud XI, Université de

46

Combatting cancer in the third millennium – The contribution of medical physics  

Microsoft Academic Search

In this invited opening Plenary Lecture at the 1st European Conference on Medical Physics, I indicated some of the roles of medical physics, and specifically medical radiation therapy physics, in the development of improved cancer care for the third millennium. It is said that you are only asked to predict the future if you are seriously old and\\/or will not

Steve Webb

2008-01-01

47

Is active travel associated with greater physical activity? The contribution of commuting and non-commuting active travel to total physical activity in adults?  

PubMed Central

Background To complement findings that active travel reduces the risk of morbidity and mortality from chronic diseases, an understanding of the mechanisms through which active travel may lead to improved health is required. Purpose The aim of this study is to examine the descriptive epidemiology of all active travel and its associations with recreational and total physical activity in a sample of adults in the UK. Methods In April 2010, data were collected from 3516 adults as part of the baseline survey for the iConnect study in the UK. Travel and recreational physical activity were assessed using detailed seven-day recall instruments. Linear regression analyses, controlling for demographic characteristics, examined associations between active travel, defined as any walking and cycling for transport, and recreational and total physical activity. Results 65% of respondents (mean age 50.5 years) reported some form of active travel, accumulating an average of 195 min/week (standard deviation = 188.6). There were no differences in the recreational physical activity levels of respondents by travel mode category. Adults who used active travel did however report significantly higher total physical activity than those who did not. Conclusions Substantial physical activity can be accumulated through active travel which also contributes to greater total physical activity. PMID:22796629

Sahlqvist, Shannon; Song, Yena; Ogilvie, David

2012-01-01

48

Does doing housework keep you healthy? The contribution of domestic physical activity to meeting current recommendations for health  

PubMed Central

Background Recent lifestyle approaches to physical activity have included the promotion of domestic physical activities such as do-it-yourself or home maintenance, gardening and housework. Although it is acknowledged that any activity is better than none, there is a danger that those undertaking domestic ‘chores’ may assume that this activity is moderate intensity and therefore counts towards this 150 minute per week target The purpose of this paper was to report the contribution domestic physical activity makes to total weekly physical activity and the relationship between domestic physical activity and leanness in the Northern Ireland population. Methods 4563 adults participated in this cross-sectional survey of physical activity behaviour. Data were collected through face-to-face interviews using computer assisted personal interviewing. Gender and age group differences in domestic MVPA activity and the ratio of domestic to total MVPA were explored using non-parametric Kruskal-Wallis tests. Self-reported volume and intensity of physical activity (in bouts of 10 minutes or more) in the home and self-reported height and weight were used to determine the association between domestic physical activity and leanness using an ANCOVA having controlled for age, gender, socio-economic and smoking status. Results 42.7% of the population report levels of physical activity which meet or exceed the current United Kingdom recommendations. Domestic physical activity accounts for 35.6% of the reported moderate to vigorous physical activity (MVPA). For women, if domestic physical activity was excluded from total MVPA, only 20.4% would be deemed to meet current recommendations. Time spent in domestic physical activity at moderate or vigorous intensity was found to be negatively associated with leanness (P?=?0.024), [R Squared?=?.132 (Adjusted R Squared?=?.125)]. Conclusions Domestic physical activity accounts for a significant proportion of self-reported daily MVPA particularly among females and older adults however such activity is negatively associated with leanness suggesting that this activity may not be sufficient to provide all of the benefits normally associated with meeting the physical activity guidelines. PMID:24139277

2013-01-01

49

Application aux modles multi-chelle de turbulence  

E-print Network

231 Chapitre 4 Application aux modèles multi-échelle de turbulence compressible homogène isotrope L'objectif des rappels sur les écoulements compressibles tur- bulents, l'objectif étant de situer les modèles forte dépendance par rap- port à la condition initiale et aux conditions aux limites. Par ailleurs, la

Chalons, Christophe

50

Predictors of parental physical abuse: The contribution of internalizing and externalizing disorders and childhood experiences of abuse  

PubMed Central

Background The deleterious effects of childhood abuse have been a focus of much research; however, the causes of parental physical abuse are less well documented. Research with clinical samples suggests that individuals who display abusive behaviors are more likely to have a history of childhood abuse and higher rates of internalizing and externalizing disorders. Whether childhood abuse and psychopathology contribute independently to parental abusive behaviors or if the association between childhood abuse and the parental physical abuse is mediated by the individual’s psychopathology has not been studied empirically. Methods The current study is based on data from a representative sample (N=4141). Lifetime psychiatric diagnoses, childhood experiences of sexual and physical abuse, and physically abusive behaviors exhibited towards children were assessed. Results Internalizing and externalizing disorders partially mediated the association between childhood abuse and parental abuse. Nonetheless, the participant’s internalizing disorders, externalizing disorders, and previous experiences of childhood abuse each independently predicted parental abuse. Further, the influence of childhood abuse was greater for women than men. Limitations The data is cross-sectional, thus clear conclusions regarding causality cannot be made. Conclusions There are multiple pathways in the etiology of parental abusive behaviors. Previous experiences of childhood abuse, internalizing disorders, and externalizing disorders each contribute to parental abuse. Individuals with psychiatric disorders or a history of childhood abuse are at an increased risk for abusive behaviors towards children in their care. Identifying such high risk parents and providing parent training programs may be effective in lowering rates of child abuse. PMID:18603302

Medley, Amanda; Sachs-Ericsson, Natalie

2013-01-01

51

BJSM social media contributes to health policy rethink: a physical activity success story in Hertfordshire.  

PubMed

Strategies to modernise the National Health Service (NHS) in England have brought about the development of local organisations called Health and Wellbeing (H&WB) boards through the Health and Social Care Act 2012. These boards were intended to become a forum where key leaders and stakeholders from health and care systems work together to improve the health and well-being of their local population and reduce health inequalities. Throughout England these boards have been drafting their strategies, largely ignoring the importance of physical activity in health and well-being. In the county of Hertfordshire, the initial draft priorities were released in 2012 and physical activity promotion was not included. Using a BJSM blog, BJSM online poll, Twitter and email, an attempt was made to generate as much interest and formal feedback as possible to the draft strategy, in order to ensure the inclusion of physical activity as a priority in the revised strategy. PMID:23444393

Weiler, Richard; Neyndorff, Christine

2013-06-01

52

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

ERIC Educational Resources Information Center

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…

Beets, Michael W.; Pitetti, Kenneth H.

2005-01-01

53

Why Some Stay: A Study of Factors Contributing to Persistence In Undergraduate Physics.  

ERIC Educational Resources Information Center

This paper reports on research undertaken to provide information about the factors influencing student persistence in undergraduate physics programs at the University of Montreal in Quebec, Canada. Data collection methods included student interviews, faculty and staff interviews, and two separate questionnaire administrations to students enrolled…

Vazquez-Abad, Jesus; And Others

54

Why Some Stay: A Study of Factors Contributing to Persistence in Undergraduate Physics.  

ERIC Educational Resources Information Center

Relates that concerns about the dropout rate among physics majors at the University of Montreal (Canada) led to a study of student persistence. Indicates that those who dropped out and those who stayed differed in their perceptions of their skills and knowledge, and their confidence in finishing the program. Presents preliminary recommendations.…

Vazquez-Abad, Jesus; Winer, Laura R.; Derome, Jean-Robert

1997-01-01

55

The Contribution of the Theory of Relation to Knowledge to Understanding Students' Engagement in Learning Physics  

Microsoft Academic Search

The issue of students’ engagement in learning physics has generally been analysed in science education research using attitudes towards science, or motivation to learn science. However, the corresponding studies have their limitations. Therefore, the object of this paper is to present and to analyse an alternative to these theoretical approaches; namely the “relation to knowledge”, which has been used more

Patrice Venturini

2007-01-01

56

Return to work after spinal cord injury: the potential contribution of physical fitness  

Microsoft Academic Search

The history, physical characteristics and fitness status of 60 persons who had sustained a spinal cord injury at least 3 years previously were considered in relation to current occupation. All subjects had completed their education, 39 being gainfully employed and 21 unemployed. The general characteristics of the sample, mainly beneficiaries of the Quebec Automobile Insurance Plan, were typical of spinal

L Noreau; R J Shephard

1992-01-01

57

Physical Activity Patterns in Portuguese Adolescents: The Contribution of Extracurricular Sports  

ERIC Educational Resources Information Center

In Portugal, two sports systems exist, one through schools and the other in community clubs. The purpose was to determine the impact of extra-curricular sports (EC sports) on boys' and girls' moderate to vigorous physical activity (MVPA). 208 adolescents (79 boys and 129 girls), between 12 and 18 years old, wore an accelerometer over seven days.…

Silva, Pedro; Sousa, Michael; Aires, Luisa; Seabra, Andre; Ribeiro, Jose; Welk, Gregory; Mota, Jorge

2010-01-01

58

New Physics Contributions to the Muon Anomalous Magnetic Moment: A Numerical Code  

E-print Network

We consider the contributions of individual new particles to the anomalous magnetic moment of the muon, utilizing the generic framework of simplified models. We also present analytic results for all possible one-loop contributions, allowing easy application of these results for more complete models which predict more than one particle capable of correcting the muon magnetic moment. Additionally, we provide a Mathematica code to allow the reader straightforwardly compute any 1-loop contribution. Furthermore, we derive bounds on each new particle considered, assuming either the absence of other significant contributions to $a_\\mu$ or that the anomaly has been resolved by some other mechanism. The simplified models we consider are constructed without the requirement of $SU(2)_L$ invariance, but appropriate chiral coupling choices are also considered. In summary, we found the following particles capable of explaining the current discrepancy, assuming unit couplings: $2$~TeV ($0.3$~TeV) neutral scalar with pure scalar (chiral) couplings, $4$~TeV doubly charged scalar with pure pseudoscalar coupling, $0.3-1$~TeV neutral vector boson depending on what couplings are used (vector, axial, or mixed), $0.5-1$~TeV singly-charged vector boson depending on which couplings are chosen, and $3$~TeV doubly-charged vector-coupled bosons. We also derive the following $1\\sigma$ lower bounds on new particle masses assuming unit couplings and that the experimental anomaly has been otherwise resolved: a doubly charged pseudo-scalar must be heavier than $7$~TeV, a neutral scalar than $3$~TeV, a vector-coupled new neutral boson $600$~GeV, an axial-coupled neutral boson $1.5$~TeV, a singly-charged vector-coupled $W^\\prime$ $1$~TeV, a doubly-charged vector-coupled boson $5$~TeV, scalar leptoquarks $10$~TeV, and vector leptoquarks $10$~TeV.

Farinaldo S. Queiroz; William Shepherd

2014-03-10

59

Contributions to improve design accuracy of bipolar ics via physical effects  

Microsoft Academic Search

The base-emitter voltage, due to its extremely reproducible exponential characteristic, is the basic element in the design of I.C. temperature sensors and temperature compensated voltage references. To achieve the required accuracy and stability in these circuits, an accurate description of the base-emitter voltage temperature dependence VBE(T) is needed. A physical point of view in the analysis of the approximations used

Agnes Nagy; Alicia Polanco; Manuel Alvarez

2007-01-01

60

The contribution of temperament, popularity, and physical appearance to children’s happiness  

Microsoft Academic Search

The relation between the happiness of 9–12 year old children and their temperament, popularity, and physical appearance was\\u000a examined. Participants included 432 children and their parents and teachers. Happiness in children was assessed using a self-rating\\u000a scale, parents’ ratings, teachers’ ratings, and the Happiness and Satisfaction Subscale of the Piers-Harris Children’s Self-Concept\\u000a Scale 2 (Piers-Harris 2) [Piers, E. V., & Herzberg,

Mark D. Holder; Ben Coleman

2008-01-01

61

Decomposing the effects of ocean warming on chlorophyll a concentrations into physically and biologically driven contributions  

NASA Astrophysics Data System (ADS)

Recently compiled observational data suggest a substantial decline in the global median chlorophyll a concentration over the 20th century, a trend that appears to be linked to ocean warming. Several modelling studies have considered changes in the ocean’s physical structure as a possible cause, while experimental work supports a biological mechanism, namely an observed increase in zooplankton grazing rate that outpaces phytoplankton production at higher temperatures. Here, we present transient simulations derived from a coupled ocean general circulation and carbon cycle model forced by atmospheric fields under unabated anthropogenic global warming (IPCC SRES A1FI scenario). The simulations account for both physical and biological mechanisms, and can reproduce about one quarter of the observed chlorophyll a decline during the 20th century, when using realistically parameterized temperature sensitivity of zooplankton metabolism (Q10 between 2 and 4) and phytoplankton growth (Q10 ˜ 1.9). Therefore, we have employed and re-calibrated the standard ecosystem model which assumes a lower temperature sensitivity of zooplankton grazing (Q10 = 1.1049) by re-scaling phytoplankton growth rates and zooplankton grazing rates. Our model projects a global chlorophyll a decline of >50% by the end of the 21st century. While phytoplankton abundance and chlorophyll a experience pronounced negative effects, primary production and zooplankton concentrations are less sensitive to ocean warming. Although changes in physical structure play an important role, much of the simulated change in chlorophyll a and productivity is related to the uneven temperature sensitivity of the marine ecosystem.

Olonscheck, D.; Hofmann, M.; Worm, B.; Schellnhuber, H. J.

2013-03-01

62

Pascale Bonnemre Considrations relatives aux reprsentations des substances  

E-print Network

Pascale Bonnemère Considérations relatives aux représentations des substances corporelles en : Bonnemère Pascale. Considérations relatives aux représentations des substances corporelles en Nouvelle Substances in New Guinea. -- Beliefs about bodily substances in some twenty New Guinea societies seem to form

Boyer, Edmond

63

Additional Contributions to the Development of the New Snow-Physics Scheme for SSiB  

NASA Technical Reports Server (NTRS)

The Simplified Simple Biosphere Model (SSiB) had a well-documented problem with snowmelt timing and infiltration. A new snow-physics scheme was developed for use in SSIB. In this, the snow layer is separated from the soil, with its own energy budget and temperature. Solar energy reaching the top of the snowpack is divided into three parts: one, reflected by the snow; two, absorbed by the snow; and three, transmitted to the ground following a simple extinction relation. Heat is exchanged between the ground and snow by conduction and by radiation through an arbitrary air-gap between them. In the GSWP exercise using the GEWEX ISLSCP Initiative I forcing data (hereafter "offline"), it was found that the new snow scheme ameliorated a significant fraction of snowmelt time-delay as compared to observations from satellite. It also produced warmer ground temperatures under the snowpack, which allowed realistic meltwater infiltration, resulting in better simulated spring soil moisture recharge and peak runoff amount as compared to observations. An ensemble of six June-July-August (JJA) simulations for 1987 and 1988 were performed with the NASA Goddard GEOS II GCM coupled with the new snow-physics SSIB using new initial soil moisture (ISM) from the offline simulations. The GCM produced more realistic precipitation in northern regions that had large snowmelt and wetter ISM in response to better snow-physics, as compared to simulations with ISM without the new snow scheme. The new SSiB-GCM also increased the interannual precipitation signal in the Indian monsoon region, resulting from changes in ISM in the Himalayas and central Asia.

Mocko, David M.; Sud, Y. C.

1999-01-01

64

Contributions of local knowledge to the physical limnology of Lake Como, Italy  

PubMed Central

This article shows how local knowledge may be valuably integrated into a scientific approach in the study of large and complex hydrological systems where data collection at high resolution is a challenge. This claim is supported through a study of the hydrodynamics of a large lake where qualitative data collected from professional fishers was combined with theory to develop a hypothesis that was then verified by numerical modeling. First the fishermen’s narratives were found to describe with accuracy internal wave motions that were evident in water column temperature records, which revealed their practical knowledge of the lake’s hydrodynamics. Second, local knowledge accounts emphasized the recurrent formation of mesoscale gyres and return flows in certain zones of the lake in stratified conditions, which did not appear in the physical data because of limitations of sampling resolution. We hypothesized that these features developed predominantly because of the interaction of wind-driven internal motions with the lake’s bathymetry, and the Earth’s rotation in the widest areas of the basin. Numerical simulation results corroborated the fishers’ descriptions of the flow paths and supported the hypothesis about their formation. We conclude that the collaboration between scientific and local knowledge groups, although an unusual approach for a physical discipline of the geosciences, is worth exploring in the pursuit of a more comprehensive understanding of complex geophysical systems such as large lakes. PMID:22493231

Laborde, Sarah; Imberger, Jorg; Toussaint, Sandy

2012-01-01

65

Gender and the development of oppositional defiant disorder: contributions of physical abuse and early family environment.  

PubMed

Research is needed to understand the role of gender in the stability, course and etiology of antisocial behavior. Family environment, given its proximal association with children's behavior, holds great promise in understanding risk for antisocial behavior. The present study examined the role of parental acceptance and emotional responsivity as assessed using the HOME, caregiver report of intimate partner violence (IPV), and levels of physical abuse as assessed using the Conflict Tactics Scales, on subsequent symptoms of Oppositional Defiant Disorder (ODD), a childhood disorder characterized by antisocial behavior. Data were drawn from Waves 1-3, cohorts 3 and 6 of the Project for Human Development in Chicago Neighborhoods. Results suggest only minor gender differences in levels of ODD symptoms, with equal rates of stability from Wave 2 to 3 in symptom levels. For boys and girls, IPV was associated with an increased risk of ODD symptoms, and higher acceptance was associated with reduced risk of ODD symptoms. However, gender differences emerged in the impact of physical abuse and emotional responsiveness, in that the former was a significant predictor for girls only, and the latter was significant for boys only. Potential implications for these findings, including the role of gender socialization are discussed. PMID:23420295

Burnette, Mandi L

2013-08-01

66

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

NASA Astrophysics Data System (ADS)

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 and science textbooks are means to learn scientific content and convey a reductive and false image of the nature of science (NoS). Our main issue is to examine the possibility to communicate a more authentic image of NoS with HS. We begin by demonstrating how our historical and epistemological analysis led us to distinguish different learning goals about NoS. We then show how these goals can generate classroom activities involving collective inquiry based on the implementation of documents. These documents may or may not be paired with experiments. Finally, we discuss the tensions that our choices created with science curricula and among teachers.

Maurines, Laurence; Beaufils, Daniel

2013-06-01

67

Biological and physical contributions to the accumulation of strombid gastropods in a Pliocene shell bed  

SciTech Connect

Before the evolutionary and ecological information contained in shell beds can be interpreted, the conditions of shell bed formation must be understood. Here the authors investigate the mode and time scale of accumulation of a dense layer of Strombus floridanus in the Pliocene Pinecrest Beds of Florida. They utilize a variety of comparative taphonomic data, including the extent of encrustation and boring on strombid shells of different ontogenetic ages, and on accompanying pelecypods of different ecological types. The taphonomic comparisons enable them to reconstruct more accurately the events of shell bed formation. The formation of the strombid shell layer involved both biological and physical components. The characteristically gregarious behavior of Strombus is reflected in the large number of individuals preserved in this layer. Based on average densities of individuals in strombid colonies today, the authors estimate that a time period of tens to hundreds of years was required to accumulate these fossils. Repeated sediment winnowing by storms, followed by rapid reburial in a regime of at least episodically high sedimentation rates, is the most likely mechanism of accumulation, and accounts for the observed patterns of encrustation and boring on the shells of Strombus and various associated pelecypods. The origin of Florida's Plio-Pleistocene shelly sands is poorly understood; analysis of this bed may provide a working model for future taphonomic studies.

Geary, D.H. (Univ. of Wisconsin, Madison (USA)); Allmon, W.D. (Univ. of South Florida, Tampa (USA))

1990-06-01

68

FAS1005 : Introduction aux sciences humaines Automne 2013  

E-print Network

ses fictions. Freud et L'« humiliation » psychanalytique. Sigmund Freud, L'homme aux loups Recueil (l'humain et ses fictions) 7- 17 octobre : Freud et la Psychanalyse L'homme moderne comme la somme de

Parrott, Lael

69

RSISTIVIT LECTRIQUE DU BISMUTH IRRADI AUX NEUTRONS RAPIDES  

E-print Network

L-247 R�SISTIVIT� �LECTRIQUE DU BISMUTH IRRADI� AUX NEUTRONS RAPIDES G. QUELARD Section d'Etude des Solides Irradiés, C.E.N., 92260 Fontenay-aux-Roses, France Résumé. 2014 Nous avons irradié du bismuth, à damage in bismuth, at 20 K has been studied by means of electrical resistivity. Results are independent

Paris-Sud XI, Université de

70

Situations de précarité aux Antilles et en Guyane  

Microsoft Academic Search

[fre] Situations de précarité aux Antilles et en Guyane . Le déséquilibre entre une croissance très rapide de la population active, et des créations d'emploi insuffisantes explique la progression du chômage aux Antilles au cours des dix dernières années. Ce dernier s'accompagne de l'apparition d'une frange de situations intermédiaires enre chô- mage et activité à temps plein : emplois irréguliers

Alain Tranap

1992-01-01

71

FALLAIT-IL APPLIQUER LA TAXE CARBONE AUX CARBURANTS ROUTIERS ?  

E-print Network

FALLAIT-IL APPLIQUER LA TAXE CARBONE AUX CARBURANTS ROUTIERS ? Richard Darbéra Latts - CNRS Darbera frappe les carburant routiers en France et dans plusieurs pays d'Europe justifierait que ceux-ci soient appliquée aux carburants consommés par les ménages a un coût économique supérieur au bénéfice attendu en

Paris-Sud XI, Université de

72

Geographic variation in participation for physically disabled adults: The contribution of area economic factors to employment after spinal cord injury  

PubMed Central

This study investigates that role of area economic characteristics in predicting employment, a key aspect of social participation for adults with physical disabilities, using data from a national registry of persons with spinal cord injury (SCI). SCI results in chronic impairment and most commonly occurs during young adulthood when working is a key aspect of the adult social role. Geocoded data was collected from two of the 14 SCI Model Systems (SCIMS) centers involved in the National SCIMS database and used to link individual-level data with area-level measures extracted from the 2000 US Census. The analysis included participants of working age (18–64 years) and living in the community (N=1,013). Hierarchical generalized linear modeling was used to estimate area-level variation in participation and the relative contribution of area-level economic indicators, adjusted for individual-level health, functioning, and background characteristics. The likelihood of employment for adults with SCI varied by area and was associated with area SES and ubanicity, but not area unemployment. These findings suggest that variation in area economic conditions may affect the feasibility of employment for persons who experience chronic physical disability during adulthood, thus limiting full participation in society. PMID:22818491

Botticello, Amanda L.; Chen, Yuying; Tulsky, David S.

2012-01-01

73

Identification of junk buyers' contribution to recycling of household waste in Hanoi, Vietnam, through a physical composition analysis.  

PubMed

Even in developing countries, the amount of containers and packaging waste are increasing in line with population concentration and lifestyle changes in urban areas. This can cause serious problems for the disposal of municipal solid waste. Through a physical composition analysis of household waste in Hanoi, the capital of Vietnam, this study aimed to identify the contribution made by junk buyers to recycling. Interviews on the handling of recyclable waste by households were conducted. About 232 kg of recyclable waste was sampled from a total of 115 households, and about 230 kg of municipal solid waste was sampled from a total of 101 households and sorted into 69 categories for measurement by volume and weight. The interview survey revealed that a high proportion of households tended to routinely store recyclable waste for sale or donation to junk buyers. Junk buyers accounted for 8.8% of recycling by weight or 26.0% by volume according to the results of the physical composition analysis. In addition, the results suggested that containers and packaging waste accounted for the largest proportion of household waste by volume. Junk buyers recycled 25.5% by weight of containers and packaging waste. In the formulation of new plans for municipal solid waste management to improve the current situation and handle future challenges, the role of the informal sector should be monitored carefully and reliable data on recyclable waste should be collected continuously. PMID:22584265

Kawai, Kosuke; Osako, Masahiro; Matsui, Saburo; Dong, Nguyen The

2012-07-01

74

Soins Aux Brules Apres Un Accident Nucleaire  

PubMed Central

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

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

2010-01-01

75

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

E-print Network

[Abridged] We present a physical model for the evolution of the ultraviolet (UV) luminosity function (LF) of high-z galaxies taking into account in a self-consistent way their chemical evolution and the associated evolution of dust extinction. The model yields good fits of the UV and Lyman-alpha LFs at z>~2. The weak evolution of both LFs 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, and of dust extinction. The slope of the faint end of the UV LF 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 UV luminosities at high-z implies a minimum halo mass capable of hosting active star formation M_crit <~ 10^9.8 M_odot, consistent with the constraints from hydrodynamical simulations. From fits of Lyman-alpha LFs plus data on the luminosity dep...

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

2014-01-01

76

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

USGS Publications Warehouse

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

Demir, I.; Seyler, B.

1999-01-01

77

Hommage aux morts de la France combattante Pierre Brossolette Albert Hall, Londres, 18 juin 1943  

E-print Network

� Hommage aux morts de la France combattante � Pierre Brossolette Albert Hall, Londres, 18 juin Analyse En rendant un hommage passionn� aux morts de la France Combattante, le 18 juin 1943 � l juin, le fondateur de la France Libre d�pose une gerbe au monument aux morts de la Grande Guerre et

Paris-Sud XI, Université de

78

Long-Term Effects of Witnessing Marital Violence for Women: The Contribution of Childhood Physical and Sexual Abuse  

Microsoft Academic Search

A sample of 313 college women completed a questionnaire about experiences with violence in childhood and adulthood and adult adjustment and relationship functioning. Nine percent of the women reported having witnessed some type of physical conflict between their parents. Witnessing marital violence was associated with other family mental health risks, childhood physical and sexual abuse, and adult physical assaults by

Margaret M. Feerick; Jeffrey J. Haugaard

1999-01-01

79

The Contribution of Physical Activity and Media Use during Childhood and Adolescence to Adult Women's Body Image  

Microsoft Academic Search

This study aimed to investigate the effects of both past and current physical activity and media use on women's body image. A sample of 144 female undergraduate students completed measures of current physical activity, media use and body image, as well as providing retrospective reports of their physical activity participation and media usage during childhood and adolescence. Regression analyses showed

Amy Slater; Marika Tiggemann

2006-01-01

80

“An Affirmation of the Abilities of Woman”: Women's Contributions to the American Academy of Kinesiology and Physical Education  

Microsoft Academic Search

Women attained leadership roles within the American Physical Education Association much earlier than in organizations like the American Medical Association and the American Physiological Society. Women also were members of the American Academy of Physical Education before its official founding in 1930. Archival records and responses by current members suggest that, for most part, they believe that their experiences have

Roberta J. Park

2006-01-01

81

What can global positioning systems tell us about the contribution of different types of urban greenspace to children's physical activity?  

PubMed Central

Urban greenspace is hypothesised to be an important location for physical activity in children, but their actual use of the resource to be active is not well known. In this study, global positioning systems (GPS) and accelerometers were used to measure activity within green environments for 902 English children aged 11-12. We summarised activity intensities in different types of greenspace on weekday evenings, weekend days, and by season. Parks were used for as much as 30% of outdoors moderate-vigorous activity at weekends and use was consistent across seasons. The findings suggest the importance of certain types of greenspace to children’s physical activity. PMID:22365385

Lachowycz, Kate; Jones, Andrew P.; Page, Angie S.; Wheeler, Benedict W.; Cooper, Ashley R.

2013-01-01

82

X-ray cross-sections and crossroads (The International Radiation Physics Society) — Richard Pratt’s contributions to both  

Microsoft Academic Search

Some examples of the impact of the theoretical contributions by Richard Pratt and his collaborators on photon cross section compilations at NBS\\/NIST and elsewhere over the past several decades are presented. Both the theoretical and measurement works which combine to provide this data base, and the contact with the varied user groups in medical applications, nuclear engineering, crystallography and X-ray

J. H Hubbell

2000-01-01

83

Awards Presented at the Spring Meeting: Second Presentation: Maurice Ewing Medal to Henry M. Stommel by the American Geophysical Union and the U.S. Navy for Profound and Imaginative Contributions to Physical and Dynamical Oceanography  

Microsoft Academic Search

The second recipient of the Maurice Ewing Medal of the American Geophysical Union is Henry M. Stommel. He was selected for his profound and imaginative contributions to physical and dynamical oceanography during the past generation. Probably the most truly creative physical oceanographer of his time, Stommel has made fundamental contributions to an astonishingly diverse range of problems, from microstructure and

Henry M. Stommel; Carl Wunsch

1977-01-01

84

Predicting Long-Term Outcomes for Women Physically Abused in Childhood: Contribution of Abuse Severity versus Family Environment  

ERIC Educational Resources Information Center

Objective: Child physical abuse (CPA) has been associated with adverse adult psychosocial outcomes, although some reports describe minimal long-term effects. The search for the explanation for heterogeneous outcomes in women with CPA has led to an examination of a range of CPA-related factors, from the severity of CPA incidents to the childhood…

Griffin, Margaret L.; Amodeo, Maryann

2010-01-01

85

Fertilization ecology of egg coats: physical versus chemical contributions to fertilization success of free-spawned eggs  

Microsoft Academic Search

Free-spawned eggs are typically enclosed within accessory structures that are shed early in development. Most research on the role of these structures in fertilization has focused on chemical constituents and their influence on sperm-egg interaction. Here I test an alternative hypothesis that accessory structures play an important physical role in fertilization by increasing the size and buoyancy of the egg,

Robert D. Podolsky

86

How Students Manage the Didactic Contract? Contribution of the Didactic Perspective to Research in Physical Education Classroom.  

ERIC Educational Resources Information Center

This study investigated how and why students modified instructional tasks, explaining modifications using the concept of didactic contract. The study focused on two theoretical perspectives in physical education (PE) research: didactic and ecological. The didactic paradigm examines relationships among teachers, students, and the content embedded…

Amade-Escot, Chantal

87

TITLE of the contribution to the book Trends in Statistical Physics: Dynamics of Nonequilibrium Processes: Surface Adsorption,  

E-print Network

were actually relevant to experimental studies of surface deposition of colloidal particles of nonequilibrium systems in physics, chemistry, biology. Theoretical models of colloid particle and protein deposition and adhesion at surfaces, accompanied by re­ laxation processes, of reaction kinetics

88

THE CONTRIBUTION OF THE THEORY OF 'RELATION TO KNOWLEDGE1' TO UNDERSTANDING STUDENTS' ENGAGEMENT IN LEARNING PHYSICS  

Microsoft Academic Search

The issue of students' engagement in learning physics has generally been analysed in Science Education research using attitudes towards science, or motivation to learn science. However, the corresponding studies have their limitations. Therefore, the object of this paper is to present and to analyse an alternative to these theoretical approaches, namely the 'relation to knowledge', which has been used more

Patrice VENTURINI

89

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

PubMed Central

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

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

2010-01-01

90

ANDR KASPI La peine de mort aux tats-Unis  

E-print Network

Lectures ANDR� KASPI La peine de mort aux �tats-Unis Paris, Plon, 2003, 250 pages. par Daniel aujourd'hui le maintien de la peine de mort, du moins au sein de l'ensemble des pays d�mocratiques. � son�ment contribuant � la fois � une d�responsabilisation g�n�ralis�e � l'�gard de la peine de mort et au renforcement

Boyer, Edmond

91

Bourses d'tudes aux 5 000 $ US par semestre  

E-print Network

Bourses d'études aux �tats-Unis 5 000 $ US par semestre Allocation pour l'assurance médicale de 1er cycle à temps plein Le programme de bourses Killam www.killamfellowships.com Geneviève Boutin-Maison Boursier Killam 2013-2014 Université d'Ottawa #12;Un coup d'oeil sur la bourse LE PROGRAMME DE BOURSES

Petriu, Emil M.

92

Financer les bourses des tudiants Encourager la persvrance aux tudes  

E-print Network

Financer les bourses des étudiants Encourager la persévérance aux études Souligner l'�cole Portail de l'enseignement coopératif Portail du Fonds de développement Programme de bourses auprès des étudiants Remises de bourses du Fonds de développement de l'�cole �crans en circuit fermé de l'�cole au

Québec, Université du

93

I -INTRODUCTION AUX STATISTIQUES J-P. Croisille  

E-print Network

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

Croisille, Jean-Pierre

94

Le concept de chômage involontaire : de Keynes aux nouveaux keynésiens  

Microsoft Academic Search

[fre] Le concept de chômage involontaire, de Keynes aux nouveaux keynésiens. . L' objectif de la présente étude est de réfléchir sur l'évolution des idées quant à l'acceptabilité du concept de chômage involontaire à l'intérieur de la théorie néo­classique. Dans une première partie, je propose ma propre reconstruction du projet global mis en œuvre par Keynes dans la Théorie générale.

Michel De Vroey

1997-01-01

95

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

E-print Network

43 APPLICATION DES PALIERS A GAZ AUX GYROSCOPES Par G. GOBERT, Centre d'�tudes 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

Paris-Sud XI, Université de

96

Predicting long-term outcomes for women physically abused in childhood: Contribution of abuse severity versus family environment  

Microsoft Academic Search

ObjectiveChild physical abuse (CPA) has been associated with adverse adult psychosocial outcomes, although some reports describe minimal long-term effects. The search for the explanation for heterogeneous outcomes in women with CPA has led to an examination of a range of CPA-related factors, from the severity of CPA incidents to the childhood family environment. This study compares several models for predicting

Margaret L. Griffin; Maryann Amodeo

2010-01-01

97

Relative Contribution of Psychosocial Variables to the Explanation of Physical Activity in Three Population-Based Adult Samples  

Microsoft Academic Search

Background. Despite large differences in physical activity by demographic subgroup, few studies have identified correlates for specific age and sex groups. The present study quantified the unique variance accounted for in each subgroup by the main psychosocial variables.Methods. Three random samples, ages 16–25, 35–45, and 50–65, with a total of 2,390 Belgian subjects, completed psychosocial questionnaires and were interviewed at

Ilse De Bourdeaudhuij; James Sallis

2002-01-01

98

From Propagation to Structure: The Experimental Technique of Bombardment as a Contributing Factor to the Emerging Quantum Physics  

NASA Astrophysics Data System (ADS)

I observe that quantum physics emerged at the turn of the last century when physics had shifted its concern from propagation phenomena to questions of structure. This transition materialized with the development of a new experimental technique, the bombardment method. The transition is well exemplified by the move from the experimental studies of Heinrich Hertz to those of Ernest Rutherford, and from those of Heinrich Hertz and Philipp Lenard to those of James Franck and Gustav Hertz. I trace the history of Rutherford's experimental bombardment method as it emerged from nineteenth-century propagation studies. I then demonstrate the use of the bombardment method in another experimental context, namely, in the celebrated experiment of Franck and Hertz. I locate the root of this experiment in Lenard's experimental studies and analyze Franck and Hertz's flawed interpretation of it. I conclude by underlining the crucial role that Bohr's quantum theory of the atom played in helping to establish these bombardment experiments as milestones of modern physics.

Hon, Giora

99

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

PubMed

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

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

2014-01-01

100

Évaluation de la performance péréquatrice des concours financiers de l'État aux communes  

Microsoft Academic Search

[fre] Évaluation de la performance péréquatrice des concours financiers de l’État aux communes . . Les 36 600 communes françaises sont loin de pouvoir offrir aux résidents ou aux entreprises qu’elles accueillent le même niveau de services collectifs de proximité pour un effort fiscal donné. Leurs «pouvoirs d’achat en termes de consommations collectives» varient dans des proportions considérables. D’une part,

Guy Gilbert; Alain Guengant

2004-01-01

101

Physics.  

ERIC Educational Resources Information Center

The author presents the argument that the past few years, in terms of new discoveries, insights, and questions raised, have been among the most productive in the history of physics. Selected for discussion are some of the most important new developments in physics research. (Author/SA)

Bromley, D. Allan

1980-01-01

102

Physics  

Microsoft Academic Search

Nuclear, plasma, elementary particle, and atomic and molecular physics are surveyed along with the physics of condensed matter and relativistic astrophysics. Attention is given to the discovery of quarks, psi particles, bosons and nuclear quantum states, the role of group theory and the search for a unified field theory. Also considered are magnetic and inertial confinement regarding fusion power, and

D. A. Bromley

1980-01-01

103

Formation Stellaire Aux Échelles Des Galaxies  

NASA Astrophysics Data System (ADS)

Star Formation is at the very core of the evolution of galaxies. From their gas reservoir (filled by infall or fusions), stars form at the "Star Formation Rate" (SFR), with an enormous impact on many aspects of the evolution of galaxies. This HDR presents first the formalism concerning star formation (SFR, IMF), some theoretical suggestions on physical processes that may affect star formation on various galactic scales, and the methods used to determine the SFR from observations. A large part is dedicated to the "Star Formation Laws" (e.g. Schmidt law) on various scales (local, radial, and global law). Finally, the last part concerns the largest scales (evolution of the "cosmic" SFR and effect of the environment).

Boissier, S.

2012-12-01

104

Chemical vs. Physical Contributions to Grainsize Distributions in Hillslope Soils along a Denudation Gradient in the Sierra Nevada, California  

NASA Astrophysics Data System (ADS)

An important part of understanding how soil forms consists of understanding grainsize evolution. How much of a soil's grainsize distribution comes from physical (i.e., fracturing or treethrow) and/or chemical (i.e., secondary mineral production) weathering remains poorly understood. In order to evaluate the effect and magnitude of physical and chemical weathering on soil-grainsize, we used a geochemical mass balance and grainsize approach on soils from the Feather River basin in the Sierra Nevada. Three hillslopes in the basin were chosen to reflect 3 different degrees of channel erosion at their bases-a hillslope with active channel incision (60% slope, below the knickpoint), a hillslope reflecting the transition between the relict and modern-day incising areas (50% slope, at the knickpoint), and a 30% hillslope in the relict landscape (an area that has not yet "felt" the 5Mya increase in erosion). Our results show that soil particle sizes increase with both hillslope slope gradient and soil-depth, following a soil grainsize increase (?m/cm) = 0.036e^{6×Slope} (R^2 = 0.9995). The Zr from the tonalite (100 ppm) up to the saprolite (100-250ppm) and into the soil (soil approx saprolite) along the 3 slopes indicate that the basin's soil geochemistry is set at depths below the soil-saprolite boundary. The mean grainsize of particles at the soil-saprolite boundary increases with slope from 78 to 181 to 275?m. Thus, in terms of elemental compositions, colluvial soils appear virtually identical to the underlying saprolite, and soil grainsize differentiation within the colluvium is mostly a physical process. However, colluvial soils do show significantly finer size distributions in the hillslopes with lower erosion rates (which also have saprolites with a greater degree of weathering loss). Therefore, the degree of chemical denudation in the saprolite appears to dictate the susceptibility of the materials to physical breakdown to finer particle sizes in the overlying colluvial soil. In addition, turnover times calculated from slope-based erosion rates for the basin (Riebe et al., 2000) indicate that once in the soil, particles breakdown at rates of 0.9, 10, and 27?m/kyr (in order of increasing slope) along the 3 hillslopes. The fact that the particles in the 3 hillslopes are breaking down at different rates means that the higher- sloped colluvium is fining faster, even though it has an overall coarser grainsize than soils on shallower slopes with higher degrees of chemical weathering. Considering the recent studies suggesting that channel incision rates are influenced by available grainsize of the sediments, these new findings suggest that processes occurring within the saprolite can possibly affect rates of bedrock channel incision. With our results showing that a soil's particle size is a product of weathering in the saprolite, we need models better linking effects and feedbacks between a hillslope's soil, it's saprolite, and the channel.

Weinman, B. A.; Yoo, K.; Mudd, S. M.; Attal, M.; Hurst, M. D.; Maher, K.; Kouba, C. M.; Bern, C.; Singhvi, A. K.

2011-12-01

105

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)

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

Michel, P.

2008-09-01

106

Physics  

NASA Astrophysics Data System (ADS)

Nuclear, plasma, elementary particle, and atomic and molecular physics are surveyed along with the physics of condensed matter and relativistic astrophysics. Attention is given to the discovery of quarks, psi particles, bosons and nuclear quantum states, the role of group theory and the search for a unified field theory. Also considered are magnetic and inertial confinement regarding fusion power, and the use of tunable lasers and microwave spectroscopy to study Rydberg states. In addition, surface physics, amorphous solids, superfluidity and gravitational collapse are discussed.

Bromley, D. A.

1980-07-01

107

Physics  

NSDL National Science Digital Library

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.

K-12 Outreach,

108

The Relative Contributions of Physical Structure and Cell Density to the Antibiotic Susceptibility of Bacteria in Biofilms  

PubMed Central

For many bacterial infections, noninherited mechanisms of resistance are responsible for extending the term of treatment and in some cases precluding its success. Among the most important of these noninherited mechanisms of resistance is the ability of bacteria to form biofilms. There is compelling evidence that bacteria within biofilms are more refractory to antibiotics than are planktonic cells. Not so clear, however, is the extent to which this resistance can be attributed to the structure of biofilms rather than the physiology and density of bacteria within them. To explore the contribution of the structure of biofilms to resistance in a quantitative way, we developed an assay that compares the antibiotic sensitivity of bacteria in biofilms to cells mechanically released from these structures. Our method, which we apply to Escherichia coli and Staphylococcus aureus each with antibiotics of five classes, controls for the density and physiological state of the treated bacteria. For most of the antibiotics tested, the bacteria in biofilms were no more resistant than the corresponding populations of planktonic cells of similar density. Our results, however, suggest that killing by gentamicin, streptomycin, and colistin is profoundly inhibited by the structure of biofilms; these drugs are substantially more effective in killing bacteria released from biofilms than cells within these structures. PMID:22450987

Kirby, Amy E.; Garner, Kimberly

2012-01-01

109

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

E-print Network

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

Paris-Sud XI, Université de

110

VULNERABILITE TERRITORIALE ET RESILIENCES: RESISTANCES ET CAPACITES ADAPTATIVES FACE AUX ALEAS CLIMATIQUES  

E-print Network

1 VULNERABILITE TERRITORIALE ET RESILIENCES: RESISTANCES ET CAPACITES ADAPTATIVES FACE AUX ALEAS to formalize a paradigmatic change of natural risk treatment, namely applied to urban development strategies capacités adaptatives face aux aléas climatiques 1. INTRODUCTION Après la catastrophe provoquée par l

Boyer, Edmond

111

Cons?quences comportementales de la violence faite aux enfants  

PubMed Central

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.

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

2013-01-01

112

Exposition précoce aux aliments et allergies alimentaires chez les enfants  

PubMed Central

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

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

2014-01-01

113

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

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

2014-01-01

114

-Supplementary Contributions --Supplementary Contributions -  

E-print Network

- strated during the workshop how the non-climatic residuals influence variance, trends and spatial patterns Contribution to Exchanges No. 26, March 2003 Holocene climate variability investigated using data,The Netherlands 2 Climate Research Unit, Univ. East Anglia Norwich, UK corresponding e-mail: t

Renssen, Hans

115

Contribution méthodologique aux bonnes pratiques en contrôle qualité des ventilateurs artificiels en usage hospitalier  

Microsoft Academic Search

The article objective is to raise the main lines for quality control in artificial ventilation in order to: 1) insure the quality and the security of care delivered to the patients; 2) satisfy the authorized requirements, in order to make them evolve. The entire survey rests on the patient physiological criteria’s with a particular focus about the patient’s comfort and

C. Petit; A. Donadey; G. Farges; T. Gigout

2005-01-01

116

Contribution aux CISG de Frdric Mougeot Centre Max Weber UMR 5283 frederic.mougeot@gmail.com  

E-print Network

lecture d'Asiles1 d'Erving Goffman par les professionnels de l'institution psychiatrique a engagé une'organisation psychiatrique induisent une transformation du travail pour les acteurs du 1 GOFFMAN E., Asiles. Etude sur la

Paris-Sud XI, Université de

117

Author's personal copy Physics Contribution  

E-print Network

for Intensity Modulated Radiation Therapy and RapidArc Planning in Nasopharyngeal Carcinomas Monica W.K. Kan was to assess the dosimetric impact of using AXB instead of AAA for the treatment of nasopharyngeal carcinomas is one of the main treatment methods for nasopharyngeal carcinomas (NPC). The treatment usually requires

Yu, K.N.

118

-Scientific Contributions --Scientific Contributions -  

E-print Network

Institute (KNMI), De Bilt,The Netherlands # The Abdus Salam International Centre for Theo- retical Physics the model very attractive to study, for instance, the role of oceanic or land processes in cli- mate heat transport by the ocean is rep- resented, or including also other processes, such as anomalous

Haak, Hein

119

Hormone de croissance placentaire. Signification par rapport aux hormones de croissance et  

E-print Network

Hormone de croissance placentaire. Signification par rapport aux hormones de croissance et. Placentalgrowth hormone. Significance relative to pituitary growth hormo- nes and placental lactogen hormone growth hormone (PGH). This entity, agonist of pituitary GH, appears responsible for the elevated IGFI

Boyer, Edmond

120

FICHE DE RESULTATS Elections aux Commissions de Gestion de la Recherche  

E-print Network

-Luc LANGLOIS Michel HERNANDEZ Fabrice MORAND Pierre BRICQUET Jean-Pierre #12;FICHE DE RESULTATS Elections aux VIALA Anne Lise DARGOUGE Olivier GUILLAUME-SIGNORET Marie JEANNY Brigitte MUTHER Nadine ARCHAMBEAU Anne

121

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

Microsoft Academic Search

BACKGROUND: Auxin\\/Indole-3-Acetic Acid (Aux\\/IAA) and Auxin Response Factor (ARF) transcription factors are key regulators of auxin responses in plants. We identified the suites of genes in the two gene families in Populus and performed comparative genomic analysis with Arabidopsis and rice. RESULTS: A total of 35 Aux\\/IAA and 39 ARF genes were identified in the Populus genome. Comparative phylogenetic analysis

Udaya C Kalluri; Stephen P DiFazio; Amy M Brunner; Gerald A Tuskan

2007-01-01

122

Arabidopsis AUX1 Gene: A Permease-Like Regulator of Root Gravitropism  

Microsoft Academic Search

The plant hormone auxin regulates various developmental processes including root formation, vascular development, and gravitropism. Mutations within the AUX1 gene confer an auxin-resistant root growth phenotype and abolish root gravitropic curvature. Polypeptide sequence similarity to amino acid permeases suggests that AUX1 mediates the transport of an amino acid-like signaling molecule. Indole-3-acetic acid, the major form of auxin in higher plants,

Malcolm J. Bennett; Alan Marchant; Haydn G. Green; Sean T. May; Sally P. Ward; Paul A. Millner; Amanda R. Walker; Burkhard Schulz; Kenneth A. Feldmann

1996-01-01

123

Anisotropy of the magnetic susceptibility of CeCu6-xAux near the quantum phase transition  

NASA Astrophysics Data System (ADS)

We report on the low-temperature dc magnetic susceptibility of CeCu6-xAux(x=0.1) in very small fields B=100 ?T and 1 mT. For x=0.1, i.e. for the quantum critical concentration, we confirm the anomalous exponent ? of the susceptibility along the easy c-direction, ?c-1??+T? with ?=0.8 observed previously in moderate fields B=100 mT (see, A. Schröder, et al., Nature 407 (2000) 351). However, below 240 mK we see a clear additional contribution to ?c. At the lowest measuring temperature T=40 mK, the ratio ?c:?a:?b=4:1.5:1 of the susceptibility anisotropy is weaker than at higher T where the ratio is 10:2:1. This is caused by a steeper increase of ?a and ?b as compared to ?c.

Tomanic, T.; Hamann, A.; Löhneysen, H. v.

2008-04-01

124

Arabidopsis aux1rcr1 mutation alters AUXIN RESISTANT1 targeting and prevents expression of the auxin reporter DR5:GUS in the root apex.  

PubMed

Multilevel interactions of the plant hormones ethylene and auxin coordinately and synergistically regulate many aspects of plant growth and development. This study isolated the AUXIN RESISTANT1 (AUX1) allele aux1(rcr1) (RCR1 for REVERSING CTR1-10 ROOT1) that suppressed the root growth inhibition conferred by the constitutive ethylene-response constitutive triple response1-10 (ctr1-10) allele. The aux1(rcr1) mutation resulted from an L126F substitution at loop 2 of the plasma membrane-associated auxin influx carrier protein AUX1. aux1(rcr1) and the T-DNA insertion mutant aux1-T were both defective in auxin transport and many aspects of the auxin response. Unexpectedly, expression of the auxin-response reporter DR5:GUS in the root apex was substantially prevented by the aux1(rcr1) but not the aux1-T mutation, even in the presence of the wild-type AUX1 allele. Following treatment with the synthetic auxin 1-naphthaleneacetic acid (NAA), DR5:GUS expression in aux1(rcr1) and aux1-T occurred mainly in the root apex and mature zone. NAA-induced DR5:GUS expression in the root apex was markedly prevented by ethylene in genotypes with aux1(rcr1) but not in aux1-T genotypes and the wild type. The effect of aux1(rcr1) on DR5:GUS expression seemed to be associated with AUX1-expressing domains. Green fluorescence protein-fused aux1(rcr1) was localized in the cytoplasm and probably not to the plasma membrane, indicating important roles of the Lys(126) residue at loop 2 in AUX1 targeting. The possible effects of aux1(rcr1) on DR5:GUS expression are discussed. PMID:23293348

Yu, Jing; Wen, Chi-Kuang

2013-02-01

125

Physics Contributions and Clinical Outcome With 3D-MRI-Based Pulsed-Dose-Rate Intracavitary Brachytherapy in Cervical Cancer Patients  

SciTech Connect

Purpose: To assess the physics contributions and clinical outcome with three-dimensional magnetic resonance imaging-guided pulsed-dose-rate (PDR) intracavitary brachytherapy in cervical cancer patients. Methods and Materials: The data from 45 patients with primary locally advanced cervical carcinoma were analyzed. The median tumor cervical volume was 64.0 cm{sup 3} (range, 3-178). Of the 45 patients, 24 (53%) had histologic and/or radiologic pelvic involvement. After pelvic with or without para-aortic concomitant chemoradiotherapy, a PDR brachytherapy boost was delivered to a three-dimensional magnetic resonance imaging-based clinical target volume, taking into account the dose-volume constraints for critical organs and optimization of the target volume coverage. Results: At a median follow-up of 26 months (range, 9-47), the 2-year overall survival and disease-free survival rate was 78% and 73%, respectively. At the last follow-up visit, the disease of all patients remained locally controlled. Adding external beam radiotherapy and PDR using the equivalent dose in 2-Gy fractions model, the median dose received by 100% and 90% of the target was 54.4 Gy{sub {alpha}}{sub /{beta}}{sub 10} and 63.5 Gy{sub {alpha}}{sub /{beta}}{sub 10} for the intermediate-risk clinical target volume and 61.6 Gy{sub {alpha}}{sub /{beta}}{sub 10} and 74.9 Gy{sub {alpha}}{sub /{beta}}{sub 10} for the high-risk clinical target volume, respectively. Of the 45 patients, 23 and 2 developed acute Grade 1-2 and Grade 3 complications, respectively; 21 patients presented with delayed Grade 1-2 complications. One other patient presented with Grade 3 vesicovaginal fistula. No Grade 4 or greater complications, whether acute or delayed, were observed. Conclusion: Magnetic resonance imaging-guided PDR brachytherapy with optimization integrating the limits of tolerance to critical organs allows for excellent local control rates. Moreover, the present results have confirmed that the ability to optimize dwell times can contribute to an improvement in local control rates with a low level of late side effects.

Chargari, Cyrus; Magne, Nicolas; Dumas, Isabelle; Messai, Taha; Vicenzi, Lisa; Gillion, Norman [Department of Radiotherapy, Brachytherapy Service, Institut Gustave Roussy, Villejuif (France); Morice, Philippe [Department of Surgical Oncology, Institut Gustave Roussy, Villejuif (France); Haie-Meder, Christine [Department of Radiotherapy, Brachytherapy Service, Institut Gustave Roussy, Villejuif (France)], E-mail: christine.haie@igr.fr

2009-05-01

126

Climate Change 2013: The Physical Science Basis. An overview of the Working Group 1 contribution to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC)  

NASA Astrophysics Data System (ADS)

Climate change 2013: The Physical Science Basis, is the Working Group I (WGI) contribution to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC). The WGI contribution extends from observations and paleoclimate information regarding past changes in the climate system, a comprehensive evaluation of climate models, the detection and attribution of observed changes to natural or anthropogenic forcing, through to projected future changes on both near-term and long-term time scales. Human influence on the climate system is now detected with increased certainty, both globally and in most regions. Since the mid-20th century, the increase in anthropogenic greenhouse gas concentrations has led to surface warming over almost the entire globe, while at the same time, the ocean has continued to warm and store energy. Satellite based observations reveal with improved precision that summer sea ice extent is declining rapidly in the Arctic, glaciers are retreating world-wide, and global mean sea level continues to rise. Concurrent with a continued increase in atmospheric CO2 concentrations, the oceanic uptake of CO2 has resulted in decreasing pH of seawater since the beginning of the industrial era. Projections of future changes in the climate system to the end of the 21st century are based on a series of new climate models and new scenarios, but are broadly consistent with previous assessment findings, confirming widespread and significant changes across the climate system. Greater warming is projected to occur over land than ocean, with the most rapid warming in the Arctic region. Based on modeled changes in seasonal mean precipitation, the contrast between wet and dry regions, and wet and dry seasons is projected to increase as global temperatures rise. Confidence in projections of global mean sea level rise has increased since the previous IPCC assessment report, and projections now include future rapid ice-sheet dynamical changes. On long time scales, warming is dominated by total emissions of CO2, and many changes will persist for centuries even if CO2 emissions were stopped. In 2014 the Fifth Assessment cycle of the IPCC will be completed following the release of the reports of Working Groups II (impacts, adaptation and vulnerability) and Working Groups III (mitigation of climate change), and finally the combined synthesis product based on all three underlying Working Group assessment reports.

Allen, S. K.; Plattner, G.; Nauels, A.; Xia, Y.; Qin, D.; Stocker, T. F.

2013-12-01

127

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

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…

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

2002-01-01

128

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

E-print Network

CIEAEM 57 ­ Italie ­ Italy Foire aux idées, Session de Poster Piazza Armerina, Forum of Ideas and in higher grades in the mathematical language of functions). #12;CIEAEM 57 ­ Italie ­ Italy Foire aux idées

Spagnolo, Filippo

129

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

PubMed Central

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

Rendu, William; Beauval, Cedric; Crevecoeur, Isabelle; Bayle, Priscilla; Balzeau, Antoine; Bismuth, Thierry; Bourguignon, Laurence; Delfour, Geraldine; Faivre, Jean-Philippe; Lacrampe-Cuyaubere, Francois; Tavormina, Carlotta; Todisco, Dominique; Turq, Alain; Maureille, Bruno

2014-01-01

130

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

PubMed

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

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

131

Mecanismos de Acción de las Auxinas y los Herbicidas Auxínicos  

NSDL National Science Digital Library

Se muestra como las auxinas y los herbicidas auxínicos pueden inducir respuestas celulares y se describe el transporte basípeto de las auxinas. También se muestra como los receptores de auxinas reconocen las auxinas y los herbicidas auxínicos, los cuales inducen entonces la transmisión y traducción de señales para activar varios genes; el papel de los productos de esos genes en las respuestas de las plantas es también mostrado.

132

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

Microsoft Academic Search

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

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

2004-01-01

133

Attachement des Cilis du caecum de Cheval aux fragments vgtaux. — Dgradation des chloroplastes.  

E-print Network

chloroplastes. — Attachement des bactéries aux Ciliés du caecum. Annie BONHOMME-FLORENTIN LA G!40138, CNRS tissues, chloroplast degradation, and attachment of bacteria to the cecum. Cecum microfauna association. The morphology of ingested envacuolized chloroplasts changed rapidly, showing different stages of digestion

Boyer, Edmond

134

Observation de chloroplastes rsistants aux triazines chez une panicode, Setaria viridis L.  

E-print Network

Observation de chloroplastes résistants aux triazines chez une panicoïdée, Setaria viridis L individus d'une population jamais traitée mais possèdent des chloroplastes résistants : cette résistance est'autres types de résistance. SUMMARY Weeds, Setaria viridis L., Chloroplastic resistance, Triazines resistance

Paris-Sud XI, Université de

135

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

E-print Network

1 Financiarisation, Evaluation et Information Comptable : De la création de valeur aux IFRS Journée Concurrence marty@gredeg.cnrs.fr Mots clés : Financiarisation, création de valeur actionnariale, EVA, normes comptables et cours de bourse). Watts et Zimmerman développèrent, dans deux articles respectivement publiés

Paris-Sud XI, Université de

136

D'UNE AFFAIRE AUX AUTRES1 Josquin DEBAZ et Sophie ROUX2  

E-print Network

D'UNE AFFAIRE AUX AUTRES1 Josquin DEBAZ et Sophie ROUX2 QUELLE AFFAIRE ? Une introduction. Mais ce qui tint lieu d'introduction dans bien des articles, ce fut le récit en trois temps que les Jeanneret, La Querelle, chap. 1. 4 Sokal, « Entrevista com Alan Sokal ». Epstein, « Postmodernism

Paris-Sud XI, Université de

137

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

E-print Network

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

Boyer, Edmond

138

Comment amliorer l'accs des populations pastorales aux services sociaux de base et  

E-print Network

production animale. L'analphabétisme touche 100% des Regional edition West Africa No. 3 October 2012 Les'Est du Tchad. Photo: Mahamat Bechir West Africa Message aux décideurs · Au sahel, la malnutrition sévit

Richner, Heinz

139

Le Knowledge Management appliqu aux problmatiques de dveloppement Durable dans la Supply Chain  

E-print Network

Le Knowledge Management appliqué aux problématiques de développement Durable dans la Supply Chain, Knowledge Management, Supply Chain, Nonaka, Modèle SECI halshs-00534785,version1-10Nov2010 #12;2 The Knowledge Management applied to Sustainable Development Problems in the Supply Chain Abstract The concept

Paris-Sud XI, Université de

140

De la pornographie illgale aux sex-shops English : From illegal pornography to sex stores  

E-print Network

De la pornographie illégale aux sex-shops English : From illegal pornography to sex stores Baptiste://dx.doi.org/10.1016/j.annder.2012.09.004 Mots-clefs : pornographie, commerce, droit, histoire, sociologie Keywords : pornography, commerce, law, history, sociology Quel était l'état du commerce pornographique

Boyer, Edmond

141

Manipulation et fonctionnalisation de nanotubes. Application aux nanotubes de nitrure de bore.  

E-print Network

Manipulation et fonctionnalisation de nanotubes. Application aux nanotubes de nitrure de bore. Aude´esum´e Ce travail de th`ese se divise en deux grandes parties concernant les nanotubes de ni- trure de bore la fonctionnalisation chi- mique des nanotubes de nitrure de bore. Les nanotubes de nitrure de bore

Paris-Sud XI, Université de

142

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

E-print Network

L'ethnologue face aux racismes : l'exemple tsigane** Patrick Williams* Ayant fait depuis des restitution d'une totalité. Celle-ci interdit en effet l'anonymat qui, dans les sociétés modernes, sert de majoritaire. The ethnologist and racisms : the example of gipsies Victims of exclusion for centuries, gipsy

Paris-Sud XI, Université de

143

The Arabidopsis AUX1 gene: a model system to study mRNA processing in plants  

Microsoft Academic Search

It is advantageous for an organism to be able to remove aberrant mRNAs that have either been incorrectly transcribed or processed in order to prevent the accumulation of potentially harmful proteins. The selective degradation of nonsense containing transcripts has been described in yeast, Caenorhabiditis elegans and plants. The ease of identification of new mutant alleles in the AUX1 gene of

Alan Marchant; Malcolm J. Bennett

1998-01-01

144

LE VOYAGE AUX AMRIQUES ET LES REVUES SAVANTES FRANAISES AU XIXE  

E-print Network

LE VOYAGE AUX AM�RIQUES ET LES REVUES SAVANTES FRAN�AISES AU XIXE SI�CLE Mona HUERTA* Pouvait Nouveau Monde, mais c'est aussi s'attarder sur la question de la médiatisation de ces voyages au cours du scientifiques à travailler sur les terres américaines ; rappelons en particulier le voyage de Pierre Bourguer

Paris-Sud XI, Université de

145

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

PubMed

The ability of the plant hormone auxin to enter a cell is critical to auxin transport and signaling. Auxin can cross the cell membrane by diffusion or via auxin-specific influx carriers. There is little knowledge of the magnitudes of these fluxes in plants. Radiolabeled auxin uptake was measured in protoplasts isolated from roots of Arabidopsis thaliana. This was done for the wild-type, under treatments with additional unlabeled auxin to saturate the influx carriers, and for the influx carrier mutant auxin resistant 1 (aux1). We also used flow cytometry to quantify the relative abundance of cells expressing AUX1-YFP in the assayed population. At pH 5.7, the majority of auxin influx into protoplasts - 75% - was mediated by the influx carrier AUX1. An additional 20% was mediated by other saturable carriers. The diffusive influx of auxin was essentially negligible at pH 5.7. The influx of auxin mediated by AUX1, expressed as a membrane permeability, was 1.5 ± 0.3 ?m s(-1) . This value is comparable in magnitude to estimates of efflux permeability. Thus, auxin-transporting tissues can sustain relatively high auxin efflux and yet not become depleted of auxin. PMID:25039492

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

2014-11-01

146

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

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…

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

2008-01-01

147

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

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…

Thorburn, Malcolm; Jess, Mike; Atencio, Matthew

2011-01-01

148

Physical Limitations Contribute to Food Insecurity and the Food Insecurity–Obesity Paradox in Older Adults at Senior Centers in Georgia  

Microsoft Academic Search

The purpose of this study was to explore the relationship of obesity and physical limitations with food insecurity among Georgians participating in the Older Americans Act (OAA) congregate meal-site program (N = 621, median age = 76 years, 83% female, 36% Black, and 64% White, convenience sample). Food insecurity was assessed using the modified 6-item US Household Food Security Survey Module; obesity was defined

Dawn P. Brewer; Christina S. Catlett; Katie N. Porter; Jung Sun Lee; Dorothy B. Hausman; Sudha Reddy; Mary Ann Johnson

2010-01-01

149

Etude comparative de récepteurs aux œstrogènes : Aspects moléculaire et cellulaire de la réponse aux œstrogènes et anti-œstrogènes impliqués dans les causes et thérapies du cancer du sein.  

E-print Network

??Les œstrogènes (E2), via le récepteur aux œstrogènes (ER), contrôlent l'expression de nombreux gènes impliqués dans la croissance, la différenciation cellulaire et les fonctions reproductrices.… (more)

Le Grand, Adélaïde

2009-01-01

150

Christian Hottin Monuments aux morts dans l'enseignement suprieur -2006 Le flambeau du savoir et la flamme du souvenir  

E-print Network

1 Christian Hottin ­ Monuments aux morts dans l'enseignement supérieur - 2006 Le flambeau du savoir et la flamme du souvenir Monuments aux morts et culte des morts dans les établissements d morts, comme en témoigne le cénotaphe érigé en haut de l'avenue et évoqué par Jules Romains dans Les

Paris-Sud XI, Université de

151

Adaptation de l'ingestion alimentaire aux dpenses nergtiques  

E-print Network

may be ; the basal metabolic rate is modulated by thyroid hormones and diet-induced thermogenesis expenditure caused by increased thermogenesis is rapidly compensated by increased caloric intake. Physical expenditures such as exercise, increased basal metabolic rate and diet-induced thermogenesis. Extreme changes

Paris-Sud XI, Université de

152

Localization of the auxin permease AUX1 suggests two functionally distinct hormone transport pathways operate in the Arabidopsis root apex  

PubMed Central

Auxins represent an important class of plant hormone that regulate plant development. Plants use specialized carrier proteins to transport the auxin indole-3-acetic acid (IAA) to target tissues. To date, efflux carrier-mediated polar auxin transport has been assumed to represent the sole mode of long distance IAA movement. Localization of the auxin permease AUX1 in the Arabidopsis root apex has revealed a novel phloem-based IAA transport pathway. AUX1, asymmetrically localized to the plasma membrane of root protophloem cells, is proposed to promote the acropetal, post-phloem movement of auxin to the root apex. MS analysis shows that IAA accumulation in aux1 mutant root apices is impaired, consistent with an AUX1 phloem unloading function. AUX1 localization to columella and lateral root cap tissues of the Arabidopsis root apex reveals that the auxin permease regulates a second IAA transport pathway. Expression studies using an auxin-regulated reporter suggest that AUX1 is necessary for root gravitropism by facilitating basipetal auxin transport to distal elongation zone tissues. PMID:11641271

Swarup, Ranjan; Friml, Jiri; Marchant, Alan; Ljung, Karin; Sandberg, Goran; Palme, Klaus; Bennett, Malcolm

2001-01-01

153

Etude par microanalyse aux rayons X des migrations d'argent dans Ag2 Te  

E-print Network

551 Etude par microanalyse aux rayons X des migrations d'argent dans Ag2 Te J. C. Bernède et Y résultats confirment l'hypothèse d'une migration ionique introduite pour rendre compte de l'allure des carac. 2014 We apply high enough electric field in M-Ag2Te-M structures to obtain a definitive memorization

Boyer, Edmond

154

De La Violence Dans La Rage Aux Tripes De Mustapha Tlili  

Microsoft Academic Search

Cette thèse présente une analyse du thème de la violence dans le livre du Mustapha Tlili intitulé La Rage aux tripes.\\u000aLes personnages de ce livre nous conduisent dans un univers de violence de la colonisation et de la décolonisation, ainsi que les conséquences douloureuses, résultats d'une humiliation refoulée.\\u000aNotre but est donc de relever les formes et les représentations

Callixte Kayiranga

2006-01-01

155

Journe de perfectionnement aux applications de l'acupuncture en obsttrique  

E-print Network

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

Brest, Université de

156

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

E-print Network

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

Brest, Université de

157

"A Better Sharing of Knowledge" Mission de la DIST aux Etats-unis  

E-print Network

mars au 4 avril 2014 #12;2 Ce rapport retrace successivement les objectifs de la Mission de la DIST, la#12;1 "A Better Sharing of Knowledge" Mission de la DIST aux Etats-unis New-York, Washington du 24 et accompagnés par le Bureau du CNRS pour l'Amérique du Nord: la Mission adresse ses vifs

Canet, Léonie

158

Near-death experiences (NDE) Expriences aux frontires de la mort  

E-print Network

Near-death experiences (NDE) Expériences aux frontières de la mort Expériences de mort imminente = Expériences de l'au-delà ? = Expériences de l'en-deçà ? #12;Sources d'informations sur l'au-delà 1. La mort 2 de l'au-delà #12;Mythologie égyptienne : Livre des morts Mythologie grecque : Platon (428

Halazonetis, Thanos

159

Charte pdagogique de l'ulB DPARTEMENT ENSEIGNEMENT -DEPARTEMENT DE SUPPORT AUX ACTIVITS ACADMIQUES  

E-print Network

Charte pédagogique de l'ulB D�PARTEMENT ENSEIGNEMENT - DEPARTEMENT DE SUPPORT AUX ACTIVIT�S ACAD�MIQUES Conseil d'administration du 18 juin 2012 #12;Charte pédagogique de l'ULB 2 Charte pédagogique de l'université (articles 1 à 3); 2. les 10 axes stratégiques pour l'ULB adoptés par le CA du 21 avril 2008 ; 3. la Charte

Cerf, Nicolas

160

Mesure de la digestibilit des fourrages destins aux chevaux par la technique des sacs de nylon  

E-print Network

Mesure de la digestibilité des fourrages destinés aux chevaux par la technique des sacs de nylon selle adultes et par la technique des sacs de nylon sur 2 poneys mâles, adultes, munis d'une canule heures selon la méthode de TILLEY et TERRY (1963), puis le sac est introduit dans le caecum pour une

Boyer, Edmond

161

Guide de l'tudiant pour effectuer une demande de bourse aux tudes suprieures Introduction  

E-print Network

Guide de l'étudiant pour effectuer une demande de bourse aux études supérieures Introduction Une demande de bourse gagnante requiert une bonne préparation et du temps*. La Faculté des études supérieures série de consultations auprès de membres des comités de sélection de bourses des grands organismes

Parrott, Lael

162

INVESTISSEMENTS FRANÇAIS AUX ETATS-UNIS, STRATÉGIES DE CROISSANCE EXTERNE ET RÉACTIONS DU MARCHÉ BOURSIER  

Microsoft Academic Search

Résumé : l'objectif de cet article est d'évaluer la réaction des marchés boursiers suite à l'annonce d'investissements directs par des entreprises françaises aux Etats-Unis. L'étude empirique se fonde sur une méthodologie d'étude d'événements, destinée à mesurer les rendements anormaux moyens et les rendements anormaux moyens cumulés, sur les cotations à la Bourse de Paris, associés à l'annonce d'acquisitions de firmes

Pierre-Xavier MESCHI; Emmanuel METAIS

163

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

E-print Network

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

Louvet, Violaine

164

Bruno JUDIC Les origines du culte de saint Martin aux V et VI sicles  

E-print Network

1 Bruno JUDIC Les origines du culte de saint Martin aux Vè et VIè siècles "Foedula qui par la anciens témoignages d'un culte de saint Martin. Il faut comprendre que Foedula, une femme de la haute époque le culte des saints Gervais et Protais fut d'ailleurs diffusé en Gaule. Mais quand Foedula est

Paris-Sud XI, Université de

165

Questionnements gographiques sur les monuments aux morts : symboliques et territoires de la commmoration  

E-print Network

historique, pour la première fois un chancelier allemand, Mme Angela Merkel, s'est tenu aux côtés du Lumières, premiers penseurs de l'idée européenne. L'événement est de taille puisqu'il s'agit pour Angela Merkel, représentante de la Nation allemande (le symbole est fort pour un pays qui fut notre principal

Paris-Sud XI, Université de

166

Pourquoi trouver un marqueur atmosphrique d'exposition aux particules diesel ?  

E-print Network

Pourquoi trouver un marqueur atmosphérique d'exposition aux particules diesel ? Dominique LAFON rôle cancérigène possible des émissions diesel a suscité de nombreuses études depuis 20 ans. Nous avons sérieux ne nous permet d'incriminer plus les émissions des véhicules à moteur diesel que ceux à moteur

Boyer, Edmond

167

Aux sources de la civilisation : Les jeunes lites brsiliennes et le voyage en Europe dans la  

E-print Network

1 Aux sources de la civilisation : Les jeunes élites brésiliennes et le voyage en Europe dans la...) fait que le voyage de formation en Europe devient le passage obligé de tout jeune membre de l séjour que ces élites trouvent leur légitimité ; mais pour accéder à ce voyage, il faut être à même de

Paris-Sud XI, Université de

168

Gopolitiques de Brest 2010 Migrations forces et vulnrabilits diffrencies face aux  

E-print Network

ravagea Londres en 1666 ou du tremblement de terre de Lisbonne en 1755 ou encore du Dust 1 Cet article est Sellin et Linda Gardelle (Ed.) (2012) 137-156" #12;Géopolitiques de Brest 2010 2 bowl aux Etats Unis souligne François Gemenne « jusqu'à l'exode provoqué par l'ouragan Katrina en 2005, la migration du Dust

Paris-Sud XI, Université de

169

Charged Particles are Prevented from Going Faster than the Speed of Light by Light Itself: A Biophysical Cell Biologist's Contribution to Physics  

E-print Network

Investigations of living organisms have led biologists and physicians to introduce fundamental concepts, including Brownian motion, the First Law of Thermodynamics, Poiseuille's Law of fluid flow, and Fick's Law of diffusion into physics. Given the prominence of viscous forces within and around cells and the experience of identifying and quantifying such resistive forces, biophysical cell biologists have an unique perspective in discovering the viscous forces that cause moving particles to respond to an applied force in a nonlinear manner. Using my experience as a biophysical cell biologist, I show that in any space consisting of a photon gas with a temperature above absolute zero, Doppler-shifted photons exert a velocity-dependent viscous force on moving charged particles. This viscous force prevents charged particles from exceeding the speed of light. Consequently, light itself prevents charged particles from moving faster than the speed of light. This interpretation provides a testable alternative to the interpretation provided by the Special Theory of Relativity, which contends that particles are prevented from exceeding the speed of light as a result of the relativity of time.

Randy Wayne

2011-03-18

170

Developmental specificity of auxin response by pairs of ARF and Aux/IAA transcriptional regulators.  

PubMed

The plant hormone auxin elicits many specific context-dependent developmental responses. Auxin promotes degradation of Aux/IAA proteins that prevent transcription factors of the auxin response factor (ARF) family from regulating auxin-responsive target genes. Aux/IAAs and ARFs are represented by large gene families in Arabidopsis. Here we show that stabilization of BDL/IAA12 or its sister protein IAA13 prevents MP/ARF5-dependent embryonic root formation whereas stabilized SHY2/IAA3 interferes with seedling growth. Although both bdl and shy2-2 proteins inhibited MP/ARF5-dependent reporter gene activation, shy2-2 was much less efficient than bdl to interfere with embryonic root initiation when expressed from the BDL promoter. Similarly, MP was much more efficient than ARF16 in this process. When expressed from the SHY2 promoter, both shy2-2 and bdl inhibited cell elongation and auxin-induced gene expression in the seedling hypocotyl. By contrast, gravitropism and auxin-induced gene expression in the root, which were promoted by functionally redundant NPH4/ARF7 and ARF19 proteins, were inhibited by shy2-2, but not by bdl protein. Our results suggest that auxin signals are converted into specific responses by matching pairs of coexpressed ARF and Aux/IAA proteins. PMID:15889151

Weijers, Dolf; Benkova, Eva; Jäger, Katja E; Schlereth, Alexandra; Hamann, Thorsten; Kientz, Marika; Wilmoth, Jill C; Reed, Jason W; Jürgens, Gerd

2005-05-18

171

Electronic and geometric structure of AuxCuy clusters studied by density functional theory  

NASA Astrophysics Data System (ADS)

We have determined the stable structures of AuCun, Au2Cun, Au3Cun and AuxCu8-x clusters. It has been observed that AuCun, Au2Cun and Au3Cun systems have two-dimensional (2D) structures up to six atoms and they become three-dimensional (3D) afterwards. AuxCu8-x clusters favor 3D structures till the Au7Cu1 cluster. We have found a lowest energy isomer of Au6Cu2 from the literature. Bond lengths, binding energies, density of states (DOS), highest occupied molecular orbital-lowest unoccupied molecular orbital (HOMO-LUMO) gaps, ionization potential (IP) and electron affinity (EA) have been calculated for these structures using the first principles density functional theory (DFT) within the generalized gradient approximation (GGA) and the local density approximation (LDA). Generally, we have observed the overlap between s electrons of Cu and p electrons of Au near the Fermi level. Charge transfers are calculated by using the Löwdin analysis. It is observed that one Cu atom does not significantly modify the clusters which have more gold atoms. It is also seen that these clusters generally have nonmagnetic properties and results are consistent with the hybridization between s and d orbitals of Au in AuxCu8-x clusters.

Kadioglu, Y.; Üzengi Aktürk, O.; Tomak, M.

2014-01-01

172

Climate Change 2013: The Physical Science Basis. An overview of the Working Group 1 contribution to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change (IPCC).  

NASA Astrophysics Data System (ADS)

The Working Group 1 contribution to the IPCC Fifth Assessment Report (AR5) extends from observations and paleoclimate information regarding past changes in the climate system, a comprehensive evaluation of climate models, the detection and attribution of observed changes to natural or anthropogenic forcing, through to projected future changes on both near-term and long-term time scales. Human influence on the climate system is now detected with increased certainty, both globally and in most regions. Since the mid-20th century, the increase in anthropogenic greenhouse gas concentrations has led to surface warming over almost the entire globe, while at the same time, the ocean has continued to warm and store energy. Satellite based observations reveal with improved precision that summer sea ice extent is declining rapidly in the Arctic, glaciers are retreating world-wide, and global mean sea level continues to rise. Concurrent with a continued increase in atmospheric CO2 concentrations, the oceanic uptake of CO2 has resulted in decreasing pH of seawater since the beginning of the industrial era. Projections of future changes in the climate system to the end of the 21st century are based on a series of new climate models and new scenarios, but are broadly consistent with previous assessment findings, confirming widespread and significant changes across the climate system. Greater warming is projected to occur over land than ocean, with the most rapid warming in the Arctic region. Based on modeled changes in seasonal mean precipitation, the contrast between wet and dry regions, and wet and dry seasons is projected to increase as global temperatures rise. Confidence in projections of global mean sea level rise has increased since the previous IPCC assessment report, and projections now include future rapid ice-sheet dynamical changes. On long time scales, warming is dominated by total emissions of CO2, and many changes will persist for centuries even if CO2 emissions were stopped. In 2014, the Fifth Assessment cycle of the IPCC will be completed following the release of the reports of Working Groups II (impacts, adaptation and vulnerability) and Working Groups III (mitigation of climate change), and finally the Synthesis Report, the combined synthesis product based on all three underlying Working Group assessment reports.

Allen, Simon K.; Plattner, Gian-Kasper; Nauels, Alexander; Xia, Yu; Stocker, Thomas F.

2014-05-01

173

Aux1p/Swa2p is required for cortical endoplasmic reticulum inheritance in Saccharomyces cerevisiae.  

PubMed

In the yeast Saccharomyces cerevisiae, the endoplasmic reticulum (ER) is found at the periphery of the cell and around the nucleus. The segregation of ER through the mother-bud neck may occur by more than one mechanism because perinuclear, but not peripheral ER, requires microtubules for this event. To identify genes whose products are required for cortical ER inheritance, we have used a Tn3-based transposon library to mutagenize cells expressing a green fluorescent protein-tagged ER marker protein (Hmg1p). This approach has revealed that AUX1/SWA2 plays a role in ER inheritance. The COOH terminus of Aux1p/Swa2p contains a J-domain that is highly related to the J-domain of auxilin, which stimulates the uncoating of clathrin-coated vesicles. Deletion of the J-domain of Aux1p/Swa2p leads to vacuole fragmentation and membrane accumulation but does not affect the migration of peripheral ER into daughter cells. These findings suggest that Aux1p/Swa2p may be a bifunctional protein with roles in membrane traffic and cortical ER inheritance. In support of this hypothesis, we find that Aux1p/Swa2p localizes to ER membranes. PMID:11553703

Du, Y; Pypaert, M; Novick, P; Ferro-Novick, S

2001-09-01

174

Aux1p/Swa2p Is Required for Cortical Endoplasmic Reticulum Inheritance in Saccharomyces cerevisiae  

PubMed Central

In the yeast Saccharomyces cerevisiae, the endoplasmic reticulum (ER) is found at the periphery of the cell and around the nucleus. The segregation of ER through the mother-bud neck may occur by more than one mechanism because perinuclear, but not peripheral ER, requires microtubules for this event. To identify genes whose products are required for cortical ER inheritance, we have used a Tn3-based transposon library to mutagenize cells expressing a green fluorescent protein-tagged ER marker protein (Hmg1p). This approach has revealed that AUX1/SWA2 plays a role in ER inheritance. The COOH terminus of Aux1p/Swa2p contains a J-domain that is highly related to the J-domain of auxilin, which stimulates the uncoating of clathrin-coated vesicles. Deletion of the J-domain of Aux1p/Swa2p leads to vacuole fragmentation and membrane accumulation but does not affect the migration of peripheral ER into daughter cells. These findings suggest that Aux1p/Swa2p may be a bifunctional protein with roles in membrane traffic and cortical ER inheritance. In support of this hypothesis, we find that Aux1p/Swa2p localizes to ER membranes. PMID:11553703

Du, Yunrui; Pypaert, Marc; Novick, Peter; Ferro-Novick, Susan

2001-01-01

175

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

Microsoft Academic Search

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\\u000a not induce VvIAA19

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

176

Information destine aux tudiants des cycles suprieurs Page 1 sur 5  

E-print Network

'ouverture. #12;Information destinée aux étudiants des cycles supérieurs Page 3 sur 5 COURRIER Il est possible de recevoir du courrier au département. Un casier, qu'il vous faudra partager avec 2 ou 3 étudiants, est mis à-ville 2500, ch. de Polytechnique Campus de l'Université de Montréal Montréal (Québec) H3C 3A7 COURRIER

Meunier, Michel

177

Soins primaires aux adultes ayant une d?ficience d?veloppementale  

PubMed Central

Résumé Objectif Mettre à jour les lignes directrices canadiennes de 2006 sur les soins primaires aux adultes ayant une déficience développementale (DD) et présenter des recommandations pratiques fondées sur les connaissances actuelles pour traiter des problèmes de santé particuliers chez des adultes ayant une DD. Qualité des preuves Des professionnels de la santé expérimentés participant à un colloque et un groupe de travail subséquent ont discuté et convenu des révisions aux lignes directrices de 2006 en se fondant sur une recherche documentaire exhaustive, la rétroaction obtenue des utilisateurs du guide de pratique et les expériences cliniques personnelles. La plupart des preuves disponibles dans ce domaine viennent de l’opinion d’experts ou de déclarations consensuelles publiées (niveau III). Message principal Les adultes ayant une DD ont des problèmes de santé complexes, dont plusieurs diffèrent de ceux de la population en général. De bons soins primaires permettent d’identifier les problèmes de santé particuliers dont souffrent les adultes ayant une DD pour améliorer leur qualité de vie et leur accès aux soins de santé et prévenir la morbidité et le décès prématuré. Ces lignes directrices résument les problèmes de santé générale, physique, comportementale et mentale des adultes ayant une DD que devraient connaître les professionnels des soins primaires et présentent des recommandations pour le dépistage et la prise en charge en se basant sur les connaissances actuelles que les cliniciens peuvent mettre en pratique. En raison de l’interaction des facteurs biologiques, psychoaffectifs et sociaux qui contribuent à la santé et au bien-être des adultes ayant une DD, ces lignes directrices insistent sur la participation des aidants, l’adaptation des interventions, au besoin, et la consultation auprès de divers professionnels de la santé quand ils sont accessibles. Elles mettent aussi en évidence la nature éthique des soins. Les lignes directrices sont formulées dans le contexte d’un cadre éthique qui tient compte des questions comme le consentement éclairé et l’évaluation des bienfaits pour la santé par rapport aux risques de préjudice. Conclusion La mise en œuvre des lignes directrices proposées ici améliorerait la santé des adultes ayant une DD et minimiserait les disparités sur les plans de la santé et des soins de santé entre les adultes ayant une DD et la population en général.

Sullivan, William F.; Berg, Joseph M.; Bradley, Elspeth; Cheetham, Tom; Denton, Richard; Heng, John; Hennen, Brian; Joyce, David; Kelly, Maureen; Korossy, Marika; Lunsky, Yona; McMillan, Shirley

2011-01-01

178

Bourses pour stagiaires trangers aux cycles suprieurs (sjours de 4 6 mois l'Universit Laval)  

E-print Network

Bourses pour stagiaires étrangers aux cycles supérieurs (séjours de 4 à 6 mois à l'Université Laval quatre à six mois à l'aide d'un programme de bourses du Ministère des affaires étrangères et du commerce de plus de 400,000$ en bourses versées. De ce nombre, plusieurs ont décidé de poursuivre des études à

Laval, Université

179

Aperçu phytosociologique sur les pâturages naturels aux environs de castelo de vide  

Microsoft Academic Search

Résumé  Etudiant les jachères pâturées de la zone de culture du seigle, aux environs de Castelo de Vide, l'auteur définit une association\\u000a nouvelle — le Lupineto-Astrocarpetum purpurascentis — appartenant à l'Helianthemion guttati Br.-Bl. (1931) 1940 em.\\u000a \\u000a Cette association occupe les sols siliceux, nettement acides, frais pendant l'hiver et une partie du printemps. Elle présente\\u000a un caractère floristique méditerranéen très net, tout

J. Malato-Beliz

1954-01-01

180

PROPRITS DILECTRIQUES DE L'OXYDE CUIVREUX AUX AUDIOFRQUENCES ENTRE 150 K ET 320 K  

E-print Network

393 PROPRI�T�S DI�LECTRIQUES DE L'OXYDE CUIVREUX AUX AUDIOFR�QUENCES ENTRE 150 °K ET 320 °K par C échantillons ont été obtenus par oxydation du cuivre à 1 O50 °C et recuit à 1 100 °C en présence d'air sous pression atmosphérique. Le montage utilisé est semblable à celui décrit par Grun [5]. Les durées d'oxydation

Boyer, Edmond

181

Contr^ole des equations aux derivees partielles aspects theorique et  

E-print Network

Contr^ole des ´equations aux d´eriv´ees partielles ­ aspects th´eorique et num´erique J´er^ome LE ROUSSEAU F´ed´eration Denis-Poisson, MAPMO, Universit´e d'Orl´eans Journ´ee contr^ole du Pole 3 ­ Universit´e d'Orl´eans 1/ 24 J. Le Rousseau Contr^ole des EDP #12;Contr^ole en dimension finie Syst`eme contr

d'Orléans, Université

182

dition interactive d'noncs en langue des signes franaise ddie aux avatars signeurs  

E-print Network

�dition interactive d'énoncés en langue des signes française dédiée aux avatars signeurs Ludovic a été publié dans les actes de la Conférence TALN-RECITAL 2013 R�SUM� Les avatars signeurs en Langue des de la communauté sourde. L'un des critères d'acceptation de ces avatars est l'aspect naturel et

Paris-Sud XI, Université de

183

The AUX1 LAX family of auxin influx carriers is required for the establishment of embryonic root cell organization in Arabidopsis thaliana  

PubMed Central

Background and Aims The root meristem of the Arabidopsis thaliana mature embryo is a highly organized structure in which individual cell shape and size must be regulated in co-ordination with the surrounding cells. The objective of this study was to determine the role of the AUX1 LAX family of auxin import carriers during the establishment of the embryonic root cell pattern. Methods The radicle apex of single and multiple aux1 lax mutant mature embryos was used to evaluate the effect of this gene family upon embryonic root organization and root cap size, cell number and cell size. Key Results It was demonstrated here that mutations within the AUX1 LAX family are associated with changes in cell pattern establishment in the embryonic quiescent centre and columella. aux1 lax mutants have a larger radicle root cap than the wild type and this is associated with a significant increase in the root-cap cell number, average cell size, or both. Extreme disorganization of the radicle apex was observed among quadruple aux1 lax1 lax2 lax3 mutant embryos, but not in single aux1 null or in lax1, lax2 and lax3 single mutants, indicating redundancy within the AUX1 LAX family. Conclusions It was determined that the AUX1 LAX family of auxin influx facilitators participates in the establishment of cell pattern within the apex of the embryonic root in a gene-redundant fashion. It was demonstrated that aux1 lax mutants are affected in cell proliferation and cell growth within the radicle tip. Thus AUX1 LAX auxin importers emerge as new players in morphogenetic processes involved in patterning during embryonic root formation. PMID:19952011

Ugartechea-Chirino, Yamel; Swarup, Ranjan; Swarup, Kamal; Peret, Benjamin; Whitworth, Morag; Bennett, Malcolm; Bougourd, Sue

2010-01-01

184

Physics and Consciousness  

E-print Network

Some contributions of physics towards the understanding of consciousness are described. As recent relevant models, associative memory neural networks are mentioned. It is shown that consciousness and quantum physics share some properties. Two existing quantum models are discussed.

Patricio Perez

1995-10-17

185

History of Medical Physics.  

ERIC Educational Resources Information Center

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…

Laughlin, John S.

1983-01-01

186

Access to Health Care and Social Protection L'accs aux soins de sant et la protection sociale  

E-print Network

Access to Health Care and Social Protection L'accès aux soins de santé et la protection sociale sécurité sociale et les pourvoyeurs de soins. Introduction In France, the access to health care is founded, the access to healthcare has been conceived as a social right and is mainly managed through the coverage

Boyer, Edmond

187

Carl Neumann's Contributions to Electrodynamics  

NASA Astrophysics Data System (ADS)

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 Königsberg school of mathematical physics. His investigations were aimed at founding a mathematically exact physical theory of electrodynamics, following the approach of Carl G.J. Jacobi (1804 1851) on the foundation of a physical theory as outlined in Jacobi’s lectures on analytical mechanics. Neumann’s work also shows how he clung to principles that impeded him in appreciating and developing new ideas such as those on field theory that were proposed by Michael Faraday (1791 1867) and James Clerk Maxwell (1831 1879).

Schlote, Karl-Heinz

2004-09-01

188

Ayuveda'S contribution to sports medicine.  

PubMed

Medical Science plays an important role in the field of Sports. Maintenance of fitness throughout the events, heightened physical and mental stamina are the basic needs of sportsmen. Here, the author attempts to find out the ways and means of utilizing the poten-tial of Ayurveda in the field of sports and its original contribution to sports medicine. PMID:22557655

Satpute, A D

1989-01-01

189

7, 77237765, 2007 Contribution of  

E-print Network

Chemistry and Physics Discussions Contribution of carbonaceous aerosol to cloud condensation nuclei of carbonaceous aerosol on cloud condensation nu- clei (CCN) concentrations in a global climate model with size of the added soluble carbonaceous material, versus the "seeding effect", in which CCN concentra-10 tions

Boyer, Edmond

190

Le système opioïde endogène et l’addiction aux drogues1  

PubMed Central

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

Maldonado, Rafael

2010-01-01

191

APPLIED PHYSICS APPLIED PHYSICS  

E-print Network

MSc APPLIED PHYSICS #12;MSc APPLIED PHYSICS This taught Masters course is based on the strong research in Applied Physics in the University's Department of Physics. The department has an impressive photonics and quantum optics, Physics and the Life Sciences, and solid state physics. The knowledge gained

Mottram, Nigel

192

Évaluation du POCIS (Polar Organic Chemical Integrative Sampler) : domaine de validité et performances pour 56 micropolluants organiques : application aux hormones, pharmaceutiques, alkyphénols, filtre UV et pesticides.  

E-print Network

??Le POCIS (Polar Organic Chemical Integrative Sampler) est un outil d'échantillonnage intégratif alternatif aux techniques d'échantillonnages classiques (ponctuelle ou automatisée) dédié à la mesure de… (more)

Morin, Nicolas

2013-01-01

193

An early auxin-responsive Aux\\/IAA gene from wheat (Triticum aestivum) is induced by epibrassinolide and differentially regulated by light and calcium  

Microsoft Academic Search

The plant hormone auxin plays a central role in regulating many aspects of plant growth and develop- ment. This largely occurs as a consequence of changes in gene expression. The Aux\\/IAA genes are best characterized among the early auxin-responsive genes, which encode short-lived transcriptional repressors. In most plants examined, including Arabidopsis, soybean, and rice, the Aux\\/IAA genes constitute a large

Bhumica Singla; Archana Chugh; Jitendra P. Khurana; P. Khurana

2006-01-01

194

Research in physical chemistry and chemical education: Part A: Water Mediated Chemistry of Oxidized Atmospheric Compounds Part B: The Development of Surveying Tools to Determine How Effective Laboratory Experiments Contribute to Student Conceptual Understanding  

NASA Astrophysics Data System (ADS)

This dissertation is a combination of two research areas, experimental physical chemistry, Chapters I to V, and chemical education, Chapters VI to VII. Chapters I to V describe research on the water-mediated chemistry of oxidized atmospheric molecules and the impact that water has on the spectra of these environmental systems. The role of water in the Earth's atmosphere has been of considerable interest due to its ability to impact chemistry and climate. Oxidized atmospheric molecules in the presence of water have the ability to form hydrogen bonded water complexes. The spectroscopic investigation of nitric acid-water complexes, outlined in Chapter III, was undertaken to characterize intermolecular hydrogen bonds in a water-restricted environment at ambient temperatures. Additionally, this characterization of nitric acid-water complexes allowed for the comparison of calculated overtone OH-stretching vibrational band frequencies, intensities, and anharmonicities of intermolecular hydrogen-bonded water complexes with experimental observations. Oxidized organic molecules, such as aldehydes and ketones, in addition to forming hydrogen-bonded water complexes can undergo a hydration reaction of the carbonyl group and form germinal diols in the presence of water. This chemistry has been studied extensively in bulk aqueous media, however little is known about this process in the gas-phase at low water concentrations. The focus of the studies outlined in Chapters IV and V is motivated by the ability of pyruvic acid and formaldehyde to form germinal diols and water complexes in water-restricted environment. This water-mediated chemistry changes the physical and chemical properties of these organic molecules, therefore, impacting the partitioning between gas and particle phase, as well as the chemistry and photochemistry of oxidized organic molecules in the Earth's atmosphere. The results presented in this dissertation may help resolve the significant discrepancy between atmospherically measured oxidized organic molecules and predictions of atmospheric models at different relative humidities. The chemical education portion of this manuscript presented in Chapters VI and VII includes the development of a survey to determine how effective a laboratory experiment is in contributing to students' understanding of fundamental chemistry. The specific example used is an electrochemical cell. Our initial results showed that while most of our students could answer quantitative questions about the operation of the cell, their conceptual understanding of the microscopic processes that occur within the cell was inconsistent with the material presented in class. In particular, we noticed that while many students were able to correctly describe the events that take place at the surface of the anode and cathode, their understanding of the events that take place at the salt bridge was lacking. In this investigation, we were able to confirm the misconceptions reported in previous studies. Our results suggest that a relatively modest, incremental revision of the experiment reduces these misconceptions and helped the students to develop a molecular-scale picture of the processes that occur within an electrochemical cell.

Maron, Marta Katarzyna

195

Guide l'intention des tudiants Bourses CRSNG, FQRNT, VANIER et autres Prparer une demande de bourse aux  

E-print Network

Guide à l'intention des étudiants Bourses CRSNG, FQRNT, VANIER et autres 2011 Préparer une demande de bourse aux études supérieures avec succès En tant qu'étudiant à Polytechnique, vous pouvez poser votre candidature pour plusieurs bourses qui pourront vous aider à assumer le coût de vos études. Ces

Skorobogatiy, Maksim

196

Les politiques alimentaires sont-elles adaptées aux changements d'habitudes alimentaires en Afrique au sud du Sahara ?  

Microsoft Academic Search

[fre] Le recours de plus en plus massif aux importations alimentaires en Afrique au sud du Sahara ne signifie pas nécessairement une dégradation générale de la production vivrière ou l'adoption d'un modèle alimentaire extérieur, en ville notamment. Les habitudes alimentaires sont encore largement indépendantes des conditions d'approvisionnement, mais les prix relatifs des divers aliments commencent à peser sur l'évolution de

Georges Courade

1989-01-01

197

La distribution d'automobiles neuves en Europe est rgie par un rglement d'exemption aux rgles de la  

E-print Network

La distribution d'automobiles neuves en Europe est régie par un règlement d'exemption aux règles de contexte, les concessionnaires doivent repenser leur métier de distributeurs automobiles pour transformer les menaces en opportunités. Les spéculations sur l'avenir du système de la distribution automobile en

Paris-Sud XI, Université de

198

Modlisation plastique bi-linaire de l'usure de matriaux abradables : application aux turbo-machines  

E-print Network

Modélisation plastique bi-linéaire de l'usure de matériaux abradables : application aux turbo'usure des matériaux abradables dans les mo- teurs d'avion est proposée. Ces revêtements sont positionnés sur à une loi de comportement plastique de l'abradable. Afin de maintenir des temps de calcul adaptés à

Paris-Sud XI, Université de

199

PROJET DE THESE COSTA RICA Evaluation des pertes de rcolte lies aux bioagresseurs dans une gamme de technicit de  

E-print Network

PROJET DE THESE COSTA RICA Evaluation des pertes de récolte liées aux bioagresseurs dans une gamme des systèmes de culture à base de café En Amérique centrale, le café est principalement cultivé en'intensification des systèmes de production. La conception de système de culture durable doit répondre à un

200

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

E-print Network

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

Paris-Sud XI, Université de

201

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

PubMed

Phloem sap contains a large repertoire of macromolecules in addition to sugars, amino acids, growth substances and ions. The transcription profile of melon phloem sap contains over 1000 mRNA molecules, most of them associated with signal transduction, transcriptional control, and stress and defense responses. Heterografting experiments have established the long-distance trafficking of numerous mRNA molecules. Interestingly, several trafficking transcripts are involved in the auxin response, including two molecules coding for auxin/indole acetic acid (Aux/IAA). To further explore the biological role of the melon Aux/IAA transcript CmF-308 in the vascular tissue, a cassette containing the coding sequence of this gene under a phloem-specific promoter was introduced into tomato plants. The number of lateral roots was significantly higher in transgenic plants expressing CmF-308 under the AtSUC2 promoter than in controls. A similar effect on root development was obtained after transient expression of CmF-308 in source leaves of N. benthamiana plants. An auxin-response assay showed that CmF-308-transgenic roots are more sensitive to auxin than control roots. In addition to the altered root development, phloem-specific expression of CmF-308 resulted in shorter plants, a higher number of lateral shoots and delayed flowering, a phenotype resembling reduced apical dominance. In contrast to the root response, cotyledons of the transgenic plants were less sensitive to auxin than control cotyledons. The reduced auxin sensitivity in the shoot tissue was confirmed by lower relative expression of several Aux/IAA genes in leaves and an increase in the relative expression of a cytokinin-response regulator, TRR8/9b. The accumulated data suggest that expression of Aux/IAA in the phloem modifies auxin sensitivity in a tissue-specific manner, thereby altering plant development. PMID:23986770

Golan, Guy; Betzer, Rotem; Wolf, Shmuel

2013-01-01

202

Que cache l'évolution des prêts bancaires aux Etats-Unis depuis la reprise 1992-1993 ?  

Microsoft Academic Search

[fre] Que cache l'évolution des prêts bancaires aux États-Unis depuis la reprise 1992-1993 ?. . Les intermédiaires financiers américains ont été accusés d'avoir contribué à la persistance des difficultés économiques en se détournant de leurs activités traditionnelles au cours de la dernière récession. Cependant, plusieurs auteurs ont montré que la baisse de l'encours de crédit n'est pas seulement due au

Nada Matta

1995-01-01

203

Depositional facies and hydrocarbon reservoir compartmentalization of the Mississippian Aux Vases Formation at King Field, Jefferson County, Illinois  

SciTech Connect

King field has produced over 4 million bbl of oil from the Mississippian Aux Vases Formation along a north-south-trending anticlinal structure 3 mi long and 1.5 mi wide. The porous and permeable quartz sandstone, which comprises the principal hydrocarbon reservoir, can grade laterally into nonporous calcareous sandstone, siltstone, shale, or limestone within one well location (660 ft). The Aux Vases Formation at King field was deposited in an intertidal to subtidal, mixed siliciclastic-carbonate environment, and the resulting mosaic of depositional facies significantly affects reservoirs continuity. Impermeable to only slightly permeable siltstones, shales, and limestones of the various offshore facies, and shales and siltstones of the tidal-flat facies separate the producing sandstones of a tidal channel-offshore bar facies into distinct reservoir compartments. This reservoir heterogeneity results in an oil-water contact at various depths across the field. Lateral compartmentalization of the reservoir has allowed large sections of the Aux Vases reservoir to remain unswept by waterflooding. Volumetric analyses suggest that untapped reservoir compartments may contain an additional 1-2 million bbl of oil recoverable by primary and waterflood methods.

Leetaru, H.E. (Illinois State Geological Survey, Champaign (United States))

1991-08-01

204

Alkoxy-auxins are selective inhibitors of auxin transport mediated by PIN, ABCB, and AUX1 transporters.  

PubMed

Polar auxin movement is a primary regulator of programmed and plastic plant development. Auxin transport is highly regulated at the cellular level and is mediated by coordinated transport activity of plasma membrane-localized PIN, ABCB, and AUX1/LAX transporters. The activity of these transporters has been extensively analyzed using a combination of pharmacological inhibitors, synthetic auxins, and knock-out mutants in Arabidopsis. However, efforts to analyze auxin-dependent growth in other species that are less tractable to genetic manipulation require more selective inhibitors than are currently available. In this report, we characterize the inhibitory activity of 5-alkoxy derivatives of indole 3-acetic acid and 7-alkoxy derivatives of naphthalene 1-acetic acid, finding that the hexyloxy and benzyloxy derivatives act as potent inhibitors of auxin action in plants. These alkoxy-auxin analogs inhibit polar auxin transport and tropic responses associated with asymmetric auxin distribution in Arabidopsis and maize. The alkoxy-auxin analogs inhibit auxin transport mediated by AUX1, PIN, and ABCB proteins expressed in yeast. However, these analogs did not inhibit or activate SCF(TIR1) auxin signaling and had no effect on the subcellular trafficking of PIN proteins. Together these results indicate that alkoxy-auxins are inactive auxin analogs for auxin signaling, but are recognized by PIN, ABCB, and AUX1 auxin transport proteins. Alkoxy-auxins are powerful new tools for analyses of auxin-dependent development. PMID:21084292

Tsuda, Etsuko; Yang, Haibing; Nishimura, Takeshi; Uehara, Yukiko; Sakai, Tatsuya; Furutani, Masahiko; Koshiba, Tomokazu; Hirose, Masakazu; Nozaki, Hiroshi; Murphy, Angus S; Hayashi, Ken-ichiro

2011-01-21

205

Mecanismo(s) de Acción de los Herbicidas Auxínicos - Parte 2 - Nivel Avanzado  

NSDL National Science Digital Library

Descripción:El control selectivo de malezas de hoja ancha en cultivos de cereales por los herbicidas auxínicos ha hecho de éstos una de las familias de herbicidas actualmente en uso mas ampliamente distribuidas e importantes. Se cree que estos herbicidas actúan como simuladores hormonales. En esta lección se detallará la relación estructural y fisiológica entre los herbicidas auxínicos y la fitohormona natural auxina (ácido indol-3-acético; IAA por sus siglas en inglés) y se explicarán los mecanismos bioquímicos que pueden estar involucrados en su modo de acción. Se revisará el mecanismo de transporte de célula a célula y la absorción de las auxinas por las células, así como también la forma en que estas moléculas causan elongación celular e inducen la síntesis de etileno. De igual forma, se describirán los receptores, las rutas de transferencia de señales y los cambios en expresión genética inducidos por la fitohormona natural IAA y su relación con la actividad de los herbicidas auxínicos.

206

CONTRIBUTION A L'TUDE DE L'OXYDATION DU NIOBIUM par Messieurs D. MOLLIMARD, J. BARDOLLE, D. SIMON, C. PERRIN et G. DALIBARD  

E-print Network

599 CONTRIBUTION A L'�TUDE DE L'OXYDATION DU NIOBIUM par Messieurs D. MOLLIMARD, J. BARDOLLE, D. SIMON, C. PERRIN et G. DALIBARD Résumé. 2014 Le présent travail est une étude de l'oxydation du Niobium kilocalories. La formation de germes d'oxyde a été précisée. Les couches d'épaisseur notables obtenues aux

Paris-Sud XI, Université de

207

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

NASA Astrophysics Data System (ADS)

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

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

2005-06-01

208

John Huizenga's Nuclear Physics Research.  

National Technical Information Service (NTIS)

A background of John Huizenga's origins and a brief historical overview of his career are given. A short list of Huizenga's contributions to the field of nuclear physics is presented. These contributions include research concerning spontaneous fission, fi...

R. Vandenbosch

1986-01-01

209

Physical activity - preventive medicine (image)  

MedlinePLUS

Physical activity contributes to health by reducing the heart rate, decreasing the risk for cardiovascular disease, and reducing ... loss that is associated with age and osteoporosis. Physical activity also helps the body use calories more efficiently, ...

210

B physics prospects at LHCb  

E-print Network

The LHCb experiment at LHC is a single-arm spectrometer designed to pursue an extensive study of B physics and CP violation. In this contribution the physics which will be performed by LHCb is reviewed.

Tomas Lastovicka

2006-05-28

211

Tectonic conditions of hydrothermal polymetallic vein-type mineralization, Sainte Marie-aux-Mines, France  

NASA Astrophysics Data System (ADS)

The Sainte-Marie-aux-Mines (SMM) mines host one of the most famous and oldest silver deposits in Europe. The SMM district is located in the central part of the Vosges mountains, France, within gneiss and granites of the Moldanubian zone. The SMM district includes the Neuenberg E-W vein-type Cu-Ag-As/Pb-Zn deposit and the Altenberg N-S vein-type Pb-Zn-Ag deposit. Deposition of the SMM hydrothermal mineralization occurred under a brittle tectonic regime that might be connected to neo-Variscan and/or post-Variscan tectonics, in a similar way as the polymetallic vein deposits of the Black Forest, Germany. A structural study was done in the Neuenberg area, in the vicinity of the Saint-Jacques vein, and within the Gabe Gottes mine, considering the orientation, extent, chronology and density of faults as well as the nature of the infilling minerals. In the Gabe-Gottes mine, the Saint-Jacques vein comprises multiple successive, sub-parallel subvertical veinlets with gangue minerals, mostly carbonates and quartz, and metal-bearing phases, sulfides and sulfosalts. The veinlets are 2 to 50 cm thick and strike N80° to N110°, the earlier veins slightly dipping towards the north, and the latest one, to the south. Seven systems of faults were identified, which may be classified into three major groups formed respectively before, during and after the main stage of ore deposition: a) Pre-mineralization faults - These consist of sinistral NE-SW strike-slip faults, and NW-SE and NE-SW steeply dipping normal faults. These could be related to Carboniferous events considering their relationships with the granitoid intrusives present in the mine area (Brézouard leucogranite ~329 Ma), and the extensional tectonics developed during exhumation processes. b) Faults associated with the main ore-deposition - These faults could be related to late-Hercynian processes from compressional to extensional tectonic regimes. Mineralization controlling faults consist of dextral and sinistral E-W strike-slip faults. Early strike-slip movements are assessed by the presence of striated iron oxides, the crystallization of which is considered to be early during the ore deposition process. Mineralizing fluids were probably fluorine-rich as F-bearing minerals, sericite, chlorite and apatite are present in the chlorite zone associated with early sulphide-rich ores. The E-W mineralized faults are only easily compatible with the tectonics known in Permian times. c) Late-stage faults - These could be related to the numerous changes in plate configuration which occur during the Mesozoic and Cenozoic times, in accordance with the creation of the Paris basin, the opening of Atlantic ocean and Rhine Graben, as well as with the Tethys closure. For example, the vertical lineation superposed on an horizontal lineation observed on mineralized rocks indicate reactivation of the former E-W mineralized veins under a normal movement. The latter may correspond to an extensive regime known during Oligocene times. On the other hand, one of the major late-stage faults strikes N-S and is related to a dextral strike-slip system, which could be considered as Miocene. It is expected that fluid remobilization occurred during fault reactivation, a process which could have led to successive ore deposition following the emplacement of the major E-W mineralized veins. A fluid inclusion study in the gangue minerals of the Gabe Gottes is now under investigation. This together with isotopic studies will help to determine the source of the mineralizing fluids, as well as the conditions of ore deposition. Keywords: Faults, polymetallic mineralization, variscan orogeny, Gabe-Gottes, Sainte-Marie-aux-Mines, Vosges, F-rich fluids.

Hafeznia, Y.; Bourlange, S.; Ohnenstetter, M.

2012-04-01

212

75 Years of Physics at NBS  

ERIC Educational Resources Information Center

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)

Ambler, Ernest

1976-01-01

213

Ectopic Overexpression of an AUXIN/INDOLE-3-ACETIC ACID (Aux/IAA) Gene OsIAA4 in Rice Induces Morphological Changes and Reduces Responsiveness to Auxin  

PubMed Central

Auxin has pleiotropic effects on plant growth and development. AUXIN/INDOLE-3-ACETIC ACID (Aux/IAA) proteins are short-lived transcriptional regulators that mediate auxin responses through interaction with an auxin receptor, the F-box protein transport inhibitor response 1 (TIR1). Most functions of Aux/IAA proteins have been identified in Arabidopsis by studying the gain-of-function mutants in domain II. In this study, we isolated and identified an Aux/IAA protein gene from rice, OsIAA4, whose protein contains a dominant mutation-type domain II. OsIAA4 has very low expression in the entire life cycle of rice. OsIAA4-overexpressing rice plants show dwarfism, increased tiller angles, reduced gravity response, and are less sensitive to synthetic auxin 2,4-dichlorophenoxyacetic acid (2,4-D). PMID:23812082

Song, Yaling; Xu, Zeng-Fu

2013-01-01

214

Modlisation plastique bi-linaire de l'usure de matriaux abradables: application aux turbo-machines  

E-print Network

Modélisation plastique bi-linéaire de l'usure de matériaux abradables: application aux turbo.legrand,ronan.ung,christophe.pierre}@mcgill.ca Résumé -- Une prise en compte de l'usure des matériaux abradables dans les turbo-machines est présentée plastique de l'abradable. Il est montré que le comportement de ce matériau est à l'origine de zones d

Paris-Sud XI, Université de

215

Strotypes et motivation autodtermine 1 Relation entre les strotypes sexus associs aux pratiques sportives et la motivation  

E-print Network

Stéréotypes et motivation autodéterminée 1 Relation entre les stéréotypes sexués associés aux pratiques sportives et la motivation autodéterminée des élèves en éducation physique et sportive Aïna et Motricité 66 (2009) 61-70" #12;Stéréotypes et motivation autodéterminée 2 Résumé Cette étude

Paris-Sud XI, Université de

216

Top Quark Physics  

Microsoft Academic Search

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

Thomas Teubner

1999-01-01

217

Programme de bourses aux tudes suprieures Page 1 Procdures et rglements (adopts par le Comit de direction le 18 juin 2012, rviss le 26 octobre 2012)  

E-print Network

Programme de bourses aux études supérieures Page 1 Procédures et règlements (adoptés par le Comité de direction le 18 juin 2012, révisés le 26 octobre 2012) PROGRAMME DE BOURSES AUX �TUDES SUP�RIEURES Procédures et règlements Les bourses de maîtrise et de doctorat de la Faculté de médecine et des sciences de

Spino, Claude

218

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

SciTech Connect

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.

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

1991-03-01

219

Physics Central: Fiddle Physics  

NSDL National Science Digital Library

This PhysicsCentral article describes the physics behind violins. The article discusses the mechanics of violin construction and how violinists produce sound. It includes labeled pictures of violin parts, animations of how the violin bow works, and other helpful images.

Popkin, Gabriel

2009-11-16

220

EDITORIAL: Physics competitions Physics competitions  

NASA Astrophysics Data System (ADS)

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/

Jordens, H.; Mathelitsch, L.

2010-07-01

221

DEPARTMENT OF PHYSICS Physics 32100  

E-print Network

DEPARTMENT OF PHYSICS Syllabus Physics 32100 Modern Physics for Engineers Designation to one- electron atoms, atomic shell structure and periodic table; nuclear physics, relativity. Prerequisites: Prereq.: Physics 20800 or equivalent, Math 20300 or 20900 (elective for Engineering students

Lombardi, John R.

222

DEPARTMENT OF PHYSICS Physics 21900  

E-print Network

DEPARTMENT OF PHYSICS Syllabus Physics 21900 Physics for Architecture Students Designation suggested material: Giancoli, Physics, Principles with Applications (6th ed.) (required), Prentice Hall Giancoli, Physics, Principles with Applications, Student Guide (6th ed.) (optional), Prentice Hall Course

Lombardi, John R.

223

Previous Work Our Contributions  

E-print Network

Motivation Previous Work Our Contributions Summary New Data Types and Operations to Support Geo-stream Operations Language Embeddings Yan Huang, Chengyang Zhang Geo-stream #12;Motivation Previous Work Our GIScience 2008 Yan Huang, Chengyang Zhang Geo-stream #12;Motivation Previous Work Our Contributions Summary

Huang, Yan

224

ERADICATION OF CROWN OF THORNS STARFISH (ACANTHASTER PLANCI) INFESTATION IN A PATCH REEF IN THE LAGOON OFF ILE AUX CERFS, MAURITIUS  

Microsoft Academic Search

The Crown of Thorns (COTs) starfish is a natural predator of live corals. It was observed in unusually high numbers in the patch reef between Ile aux Cerfs and the fringing reef. This paper describes how Crown of Thorns infestation was effectively controlled by injection of dry acid in situ through diving without any adverse effect on the marine environment

V Mangar

225

17 `eme Congr`es Francais de Mecanique Troyes, septembre 2005 Generateur de conditions aux limites amont pour les simulations de type  

E-print Network

17 `eme Congr`es Franc¸ais de M´ecanique Troyes, ­ septembre 2005 G´en´erateur de conditions aux´ecomposition a ´et´e choisie car elle permet d'extraire les 1 #12;17 `eme Congr`es Franc¸ais de M´ecanique Troyes

226

Quelques conseils pratiques pour la prparation et la slection des dossiers de bourses Le concours annuel des bourses Vanier est arrim aux organismes subventionnaires  

E-print Network

Quelques conseils pratiques pour la préparation et la sélection des dossiers de bourses Vanier Le concours annuel des bourses Vanier est arrimé aux organismes subventionnaires fédéraux suivent présentent quelques conseils utiles pour la préparation des dossiers de bourses Vanier

Parrott, Lael

227

Manuscrit auteur publi dans Urbanisme, dossier villes indiennes, n355, juillet-aot 2007, Dynamiques d'urbanisation : des megacities aux villages urbains  

E-print Network

-50 1 Dynamiques d'urbanisation : des megacities aux villages urbains Kamala Marius-Gnanou1 et François. Moriconi-Ebrard (http://ifpindia.org/Built-Up-Areas-in-India-e- GEOPOLIS.html ) 4 Dans les frontières

Paris-Sud XI, Université de

228

Agostinelli, S. (2008). Six questions aux approches franaises des didactiques scientifiques appliques au e-learning. In, S. Agostinelli & M. Ranieri, (Eds.) The scientific didactical approaches  

E-print Network

appliquées au e-learning. In, S. Agostinelli & M. Ranieri, (Eds.) The scientific didactical approaches of e-learning - the French experience. Journal of e-Learning and Knowledge Society, 4(2), 147- 162. Six questions aux approches francophones des didactiques scientifiques appliquées au e-learning Professeur Serge Agostinelli

Paris-Sud XI, Université de

229

Physics for Physical Sciences  

NSDL National Science Digital Library

Created by Jason Dicker at Launceston College in Tasmania, these materials present information and examples of the physics concepts of radioactivity, motion, and current electricity. The Radioactivity portion contains sections on natural types of radioactivity, radioactive decay, and problems for students such as designing "a series of experiments to show that 'radioactivity' has nothing to do with sunlight" without using a Geiger counter. The Motion portion contains pages about vectors, projectile motion, momentum, and force. The final section, Current Electricity, has links to pages about charge and current, voltage, resistance, and some problems about electricity for students to solve. This is an excellent resource for physics educators in higher education to use to explain physics principles in the physical sciences.

Dicker, Jason

2008-01-30

230

Of Physics & Astronomy. MEDICAL PHYSICS  

E-print Network

and may usefully help physics/medical physics students with module choices. #12;Medical Physics Guide 2013Department Of Physics & Astronomy. MEDICAL PHYSICS 2013-2014 Sept 2013 #12;Medical Physics Guide 2013-2014 2 1. Overview Two programmes of study are offered jointly by the Department of Physics

Crowther, Paul

231

Physical Punishment  

MedlinePLUS

... privileges, and physical punishment. Physical punishment, sometimes called corporal punishment, is anything done to cause pain or discomfort ... likely to physically punish their own children. Physical punishment may influence ... in your child: bullying other children being aggressive ...

232

Positron lifetime in vacancy-impurity complexes (*) Section d'Etudes des Solides Irradis, Centre d'Etudes Nuclaires, Boite Postale n 6, 92260 Fontenay aux Roses, France  

E-print Network

contribution to the annihilation rate of the positron comes from valence electrons and the contri- bution-550 15 DÃ?CEMBRE 1981,1 Classification Physics Abstracts 78.70B 1. Introduction. - The positron to the variations of the electron density that one can distinguish the complexes of the type Ln Y m with n vacancies

Boyer, Edmond

233

Physical and Microstructural Properties of Radio-Frequency Plasma-Enhanced Chemical Vapor Deposition Grown n-Type Phosphorus Doped Amorphous Carbon Films on the Contribution to Carbon-Based Solar Cells  

NASA Astrophysics Data System (ADS)

The physical and microstructural properties of phosphorus doped n-type amorphous carbon (n-C:P) films grown from a radio-frequency (rf) discharge in methane gas as a function of rf power (Prf) was previously determined, and their influence on the electronic properties is now analyzed. It is shown that Prf plays a major role in the deposition of n-C:P films. The Raman scattering, Fourier transform infrared spectroscopy (FTIR), optical spectroscopy, Electron spin resonance (ESR) analyses and electrical resistivity measurement have confirmed successfull phosphorus doping. Moreover, the fabricated n-C:P on p-type silicon substrates (n-C:P/p-Si) heterojunction solar cells, when exposed to AM 1.5 illumination (100 mW/cm2, 25°C) is also studied. The maximum open-circuit voltage (Voc) and short-circuit current density (Jsc) for the cells are observed to be approximately 236 V and 7.34 mA/cm2, respectively for the n-C:P/p-Si cell grown at low Prf of 100 W. The highest energy-conversion efficiency (?) and fill factor (FF) were found to be approximately 0.84 and 49%, respectively. We have observed that the rectifying nature of the heterojunction structures is due to the nature of n-C:P films.

Rusop, Mohamad; Ebisu, Hiroshi; Adachi, Mitsuhiro; Soga, Tetsuo; Jimbo, Takashi

2005-08-01

234

An improved technique for modeling initial reservoir hydrocarbon saturation distributions: Applications in Illinois (USA) aux vases oil reservoirs  

USGS Publications Warehouse

An improved technique for modeling the initial reservoir hydrocarbon saturation distributions is presented. In contrast to the Leverett J-function approach, this methodology (hereby termed flow-unit-derived initial oil saturation or FUSOI) determines the distributions of the initial oil saturations from a measure of the mean hydraulic radius, referred to as the flow zone indicator (FZI). FZI is derived from porosity and permeability data. In the FUSOI approach, capillary pressure parameters, S(wir), P(d), and ??, derived from the Brooks and Corey (1966) model [Brooks, R.H., Corey, A.T., 1966. Hydraulic properties of porous media, Hydrology Papers, Colorado State Univ., Ft. Collins, No. 3, March.], are correlated to the FZI. Subsequent applications of these parameters then permit the computation of improved hydrocarbon saturations as functions of FZI and height above the free water level (FWL). This technique has been successfully applied in the Mississippian Aux Vases Sandstone reservoirs of the Illinois Basin (USA). The Aux Vases Zeigler field (Franklin County, IL, USA) was selected for a field-wide validation of this FUSOI approach because of the availability of published studies. With the initial oil saturations determined on a depth-by-depth basis in cored wells, it was possible to geostatistically determine the three-dimensional (3-D) distributions of initial oil saturations in the Zeigler field. The original oil-in-place (OOIP), computed from the detailed initialization of the 3-D reservoir simulation model of the Zeigler field, was found to be within 5.6% of the result from a rigorous material balance method.An improved technique for modeling the initial reservoir hydrocarbon saturation distributions is presented. In contrast to the Leverett J-function approach, this methodology (hereby termed flow-unit-derived initial oil saturation or FUSOI) determines the distributions of the initial oil saturations from a measure of the mean hydraulic radius, referred to as the flow zone indicator (FZI). FZI is derived from porosity and permeability data. In the FUSOI approach, capillary pressure parameters, Swir, Pd, and ??, derived from the Brooks and Corey (1966) model, are correlated to the FZI. Subsequent applications of these parameters then permit the computation of improved hydrocarbon saturations as functions of FZI and height above the free water level (FWL). This technique has been successfully applied in the Mississippian Aux Vases Sandstone reservoirs of the Illinois Basin (USA). The Aux Vases Zeigler field (Franklin County, IL, USA) was selected for a field-wide validation of this FUSOI approach because of the availability of published studies. With the initial oil saturations determined on a depth-by-depth basis in cored wells, it was possible to geostatistically determine the three-dimensional (3-D) distributions of initial oil saturations in the Zeigler field. The original oil-in-place (OOIP), computed from the detailed initialization of the 3-D reservoir simulation model of the Zeigler field, was found to be within 5.6% of the result from a rigorous material balance method.

Udegbunam, E.; Amaefule, J. O.

1998-01-01

235

Physics 232 Condensed Matter Physics  

E-print Network

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

Young, A. Peter

236

@Why Physics Comprehensive Physics Major.  

E-print Network

@Why Physics Comprehensive Physics Major. From the basic laws of physics to the resulting emergent behavior, physics studies what the universe is made of and how it works. As a Physics major that surrounds us, to the structure and evolution of the entire universe. We offer three degrees in Physics

Yoo, S. J. Ben

237

Physics in perspective, volume 1  

NASA Technical Reports Server (NTRS)

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.

1972-01-01

238

Prim-Allaz I., Perrien J & Pras B., (2001) Les apports de la thorie du contrat social l'explication des ruptures de relations de long terme entre organisations : une application aux  

E-print Network

Prim-Allaz I., Perrien J & Pras B., (2001) Les apports de la théorie du contrat social à l RELATIONS DE LONG TERME ENTRE ORGANISATIONS : UNE APPLICATION AUX RELATIONS BANQUES/PME Isabelle PRIM-ALLAZ

Paris-Sud XI, Université de

239

Physical Changes  

NSDL National Science Digital Library

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 ...

Jolley, Mr.

2005-10-29

240

Physical Science  

NSDL National Science Digital Library

Physical science is the science of matter and energy and their interactions and examines the physical world around us. Using the methods of the physical sciences, students learn about the composition, structure, properties, and reactions of matter and the relationships between matter and energy. Students are best able to build understanding of the physical sciences through hands-on exploration of the physical world.

K-12 Outreach,

241

AN EXPERIMENT IN AGRICULTURAL CREDIT: THE SMALL FARMER GROUP LENDING PROGRAMME IN GHANA (1969-1980) \\/ UN EXPERIMENT DE CREDIT AGRICOLE: LE PROGRAMME DE CREDIT AUX GROUPES DE PETITS EXPLOITANTS AGRICOLES AU GHANA (1969-1980)  

Microsoft Academic Search

Cet article analyse en détail le programme de crédit aux regroupements de petits exploitants mis en place par la Agricultural Development Bank (ADB) au Ghana dans la période 1969-1980. Avant 1969, la Banque n'avait pas réussi à actroyer du crédit aux millions de petits exploitants qui produisent la plus grande partie de l'Output agricole du pays. Á l'époque, le crédit

Kwame Opoku Owusu; William Tetteh

1982-01-01

242

Contribution Margin Budgeting.  

ERIC Educational Resources Information Center

Describes Iowa Valley Community College District's Contribution Margin Budgeting (CMB) program, successfully implemented to stave off bankruptcy. In this program, each responsibility center receives credit for all income generated and is charged for all expenditures, and each must build its own reserve against revenue shortfalls and unanticipated…

Tambrino, Paul A.

2001-01-01

243

CONTRIBUTED Green Cloud Computing  

E-print Network

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

Tucker, Rod

244

DEPARTMENT OF PHYSICS Physics 42200  

E-print Network

DEPARTMENT OF PHYSICS Syllabus Physics 42200 Biophysics Designation: Undergraduate Catalog and membranes. In depth study of the physical basis of selected systems including vision, nerve transmission. Prerequisites: Prereq.: 1 yr. of Math, 1 yr. of Physics (elective for Physics Majors and Biomedical Engineering

Lombardi, John R.

245

DEPARTMENT OF PHYSICS Physics 32300  

E-print Network

DEPARTMENT OF PHYSICS Syllabus Physics 32300 Quantum Mechanics for Engineers Designation: required for Physics majors in the Applied Physics Option Undergraduate Catalog description: Basic experiments, wave: Physics 20700 and 20800, Math 39100 and Math 39200 Textbook and other suggested material: Scherrer

Lombardi, John R.

246

Physical Education: Essential Issues  

ERIC Educational Resources Information Center

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…

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

2005-01-01

247

Computations in Plasma Physics.  

ERIC Educational Resources Information Center

Discusses contributions of computers to research in magnetic and inertial-confinement fusion, charged-particle-beam propogation, and space sciences. Considers use in design/control of laboratory and spacecraft experiments and in data acquisition; and reviews major plasma computational methods and some of the important physics problems they…

Cohen, Bruce I.; Killeen, John

1983-01-01

248

Semantic physical science  

PubMed Central

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

2012-01-01

249

Student Blogging about Physics  

ERIC Educational Resources Information Center

In traditional introductory physics classes, there is often limited opportunity for students to contribute their own ideas, interests, and experiences as they engage with the subject matter. This situation is exacerbated in university lecture-format classes, where students may not feel comfortable speaking during class. In the last few years,…

Daniels, Karen E.

2010-01-01

250

Flavor Physics and CP Violation at LHC  

E-print Network

Flavor Physics at LHC will contribute significantly to the search for New Physics via precise and complementary measurements of CKM angles and the study of loop decays. Here we present the expected experimental sensitivity and physics performance of the LHC experiments that will to B-physics.

Andreas Schopper

2006-05-29

251

La gopolitique locale-globale aux marges de la City de Londres : conflits autour des projets de renouvellement urbain de Bishopsgate  

E-print Network

1 La géopolitique locale-globale aux marges de la City de Londres : conflits autour des projets de renouvellement urbain de Bishopsgate Publiés dans Hérodote n°137, p. 119-134, sour le titre Conflits d convoité par les promoteurs, peine à faire consensus, comme l'attestent différents conflits médiatisés. S

Paris-Sud XI, Université de

252

Analyse des effets boursiers suite aux changements de dirigeants : le cas des entreprises du NASDAQ et de l'OTC depuis mars 2000  

Microsoft Academic Search

Jusqu'en décembre 2001, le thème de la gouvernance, bien qu'important, ne représentait pas nécessairement un défi d'ampleur pour les entreprises. Puis, survinrent Enron et les autres cas de fraude qui s'ajoutaient aux problèmes rencontrés par les entreprises de la nouvelle économie. Ces bouleversements ont fait réaliser à quel point les entreprises (même les plus grandes) peuvent être dans certains cas

Alain Finet; Réal Labelle

2003-01-01

253

Synth`ese de l'enquete destin'ee aux b'en'eficiaires de bourses de formation ` a et par  

E-print Network

Synth`ese de l'enquâ??ete destin'ee aux b'en'eficiaires de bourses de formation ` a et par la'enquâ??ete porte sur la perception qu'ont les boursiers des bourses parfois improprement nomm'ees ``bourses sur crit`eres sociaux''. Le questionnaire a 'et'e envoy'e `a tous les b'en'eficiaires de ce type de bourses

Bertrand, Benoît

254

Interaction of the Tobacco Mosaic Virus Replicase Protein with the Aux\\/IAA Protein PAP1\\/IAA26 Is Associated with Disease Development  

Microsoft Academic Search

Virus-infected plants often display developmental abnormalities that include stunting, leaf curling, and the loss of apical dominance. In this study, the helicase domain of the Tobacco mosaic virus (TMV) 126- and\\/or 183-kDa replicase protein(s) was found to interact with the Arabidopsis Aux\\/IAA protein PAP1 (also named IAA26), a putative regulator of auxin response genes involved in plant development. To investigate

Meenu S. Padmanabhan; Sameer P. Goregaoker; Sheetal Golem; Haiymanot Shiferaw; James N. Culver

2005-01-01

255

Rflexions sur le transfert mthodologique de l'analyse qualitative d'accidents de la circulation routire issue de l'tude dtaille des accidents (EDA) franaise aux  

E-print Network

1 Réflexions sur le transfert méthodologique de l'analyse qualitative d'accidents de la circulation routière issue de l'étude détaillée des accidents (EDA) française aux procédures d'accidents colombiennes Mécanismes d'accidents (MA) - Institut Français des Sciences et Technologies des Transports, de l

Paris-Sud XI, Université de

256

Analyse XPS des surfaces de Si et SiO2 exposes aux plasmas de CHF3 et CHF32014C2F6. Polymrisation et gravure  

E-print Network

309 Analyse XPS des surfaces de Si et SiO2 exposées aux plasmas de CHF3 et CHF32014C2F6 exposées à des plasmas de CHF3 et CHF32014C2F6 sont caractérisées par spectroscopie de photoélectrons (XPS and CHF32014C2F6 RF plasmas (RIE mode) are characterized by X-ray Photoelectron Spectroscopy (XPS

Boyer, Edmond

257

Practical Physics  

NSDL National Science Digital Library

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.

2012-08-17

258

Avicenna's contribution to cardiology  

PubMed Central

Ibn Sina, known in the West as Avicenna, was the most famous and influential of all the Islamic philosopher-scientists. His most important medical works are the Canon of Medicine medical encyclopedia and a treatise on cardiac drugs. His Canon of Medicine remained the standard text in both the East and West until the 16th century. Avicenna's description of cardiac diseases was logically presented perhaps for the first time in the history of medicine. Avicenna was the first to describe carotid sinus hypersensitivity, which presents with vasovagal syncope. He was a pioneer in pulsology and the first correct explanation of pulsation was given by Avicenna, after he refined Galen's theory of the pulse. Besides, he discussed the action of available drugs on the heart in details and mentioned their indications and contraindications. In conclusion, Avicenna made important contributions to cardiology. This article describes some of his contributions in this field. PMID:24678465

Chamsi-Pasha, Mohammed A.R.; Chamsi-Pasha, Hassan

2014-01-01

259

Niveau socio?conomique et processus du recours aux soins par les familles de patients souffrant de troubles psychiques au Burkina Faso  

PubMed Central

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

Yaogo, Ahmed; Sommer, Alain; Moulai, Pierre; Chebili, Said; Abaoub-Germain, Agnes

2014-01-01

260

Expression Pattern of Aux/IAA Genes in the iaa3/shy2?1D Mutant of Arabidopsis thaliana (L.)  

PubMed Central

A semi?dominant mutant suppressor of hy2 (shy2?1D) of Arabidopsis thaliana, originally isolated as a photomorphogenesis mutant, shows altered auxin responses. Recent molecular cloning revealed that the SHY2 gene is identical to the IAA3 gene, a member of the primary auxin?response genes designated the Aux/IAA gene family. Because Aux/IAA proteins are reported to interact with auxin response factors, we investigated the pattern of expression of early auxin genes in the iaa3/shy2?1D mutant. RNA hybridization analysis showed that levels of mRNA accumulation of the early genes were reduced dramatically in the iaa3/shy2?1D mutants, although auxin still enhanced gene expression in the iaa3/shy2?1D mutant. Histochemical analysis using a fusion gene of the auxin responsive domain (AuxRD) and the GUS gene showed no IAA?inducible GUS expression in the root elongation zone of the iaa3/shy2?1D mutant. On the other hand, ectopic GUS expression occurred in the hypocotyl, cotyledon, petiole and root vascular tissues in the absence of auxin. These results suggest that IAA3/SHY2 functions both negatively and positively on early auxin gene expression. PMID:12096821

OONO, YUTAKA; OOURA, CHIHARU; UCHIMIYA, HIROFUMI

2002-01-01

261

Introduction and Motivation Our Contribution  

E-print Network

Introduction and Motivation Our Contribution Summary Efficient Polynomial Operations in the Shared PKC 2006 1 / 19 #12;Introduction and Motivation Our Contribution Summary Outline 1 Introduction and Motivation Secure Multiparty Computation Motivation 2 Our Contribution Overview Protocols 2 / 19 #12

Mohassel, Payman

262

Venus Express Magnetometer Contribution to Space Plasma Physics  

Microsoft Academic Search

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

Tielong Zhang

2008-01-01

263

Bullying: Proactive Physical Educators' Contribution to School-Wide Prevention  

ERIC Educational Resources Information Center

Although not a new concept, bullying continues to be a problem in schools across the nation. Bullying involves the intention to hurt the feelings of the victim. Research demonstrates that victims of bullying often experience low self-esteem, depression, anxiety, insecurity, oversensitivity, introversion, and withdrawal from social activities. This…

Gibbone, Anne; Manson, Mara

2010-01-01

264

Contributions of Burning Plasma Physics Experiment to Fusion Energy Goals  

E-print Network

. of Electrical & Computer Eng. And Center for Energy Research University of California, San Diego, Burning Plasma is not a major issue in a power plant. All ARIES designs require confinement performance similar to present any current-drive system. There is more flexibility in choosing plasma parameters. (Incorrect) Pulsed

265

Could Applied Physics and Industry contribute to Increase of GDP?  

NASA Astrophysics Data System (ADS)

It is explained that the accentuation on the agriculture could not increase significantly the GDP/capita in the Republic of Moldova, while the revival of the branches of industry, which were developed in the former Moldavian S.S.R., such as microelectronics, hidropumping will increase singnificantly the GDP.

Gaina, Alex

2006-11-01

266

Collins Mechanism Contributions to Single Spin Asymmetry  

SciTech Connect

We present recent developments on the single transverse spin physics, in particular, the Collins mechanism contributions in various hadronic reactions, such as semi-inclusive hadron production in DIS process, azimuthal distribution of hadron in high energy jet in pp collisions. We will demonstrate that the transverse momentum dependent and collinear factorization approaches are consistent with each other in the description of the Collins effects in the semi-inclusive hadron production in DIS process.

Yuan,F.

2009-05-25

267

Collins Mechanism Contributions to Single Spin Asymmetry  

SciTech Connect

We present recent developments on the single transverse spin physics, in particular, the Collins mechanism contributions in various hadronic reactions, such as semi-inclusive hadron production in DIS process, azimuthal distribution of hadron in high energy jet in pp collisions. We will demonstrate that the transverse momentum dependent and collinear factorization approaches are consistent with each other in the description of the Collins effects in the semi-inclusive hadron production in DIS process.

Yuan,F.

2009-05-26

268

Collins Mechanism Contributions to Single Spin Asymmetry  

SciTech Connect

We present recent developments on the single transverse spin physics,in particular, the Collins mechanism contributions in various hadronic reactions,such as semi-inclusive hadron production in DIS process, azimuthal distributionof hadron in high energy jet in pp collisions. We will demonstrate thatthe transverse momentum dependent and collinear factorization approaches areconsistentwith each other in the description of the Collins effects in the semi-inclusivehadron production in DIS process.

Yuan, Feng

2009-09-11

269

Turkic Contributions To The CLIC Project  

NASA Astrophysics Data System (ADS)

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.

Çiftçi, A. K.

2007-04-01

270

Turkic Contributions To The CLIC Project  

Microsoft Academic Search

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

Ciftci

2007-01-01

271

Turkic Contributions To The CLIC Project  

SciTech Connect

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.

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

2007-04-23

272

Johannes Kepler and his contribution to Applied Mathematics  

Microsoft Academic Search

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

Franz Pichler

1998-01-01

273

Mar 30, 2010 NSTX experimental contributions for the FY11  

E-print Network

Mar 30, 2010 NSTX experimental contributions for the FY11 Joint Research Target on pedestal physics Rajesh Maingi FY11 JRT discussion PPPL 30 Mar 2010 College W&M Colorado Sch Mines Columbia U Comp Quebec Supported by #12;Mar 30, 2010 Wide range of NSTX experimental contributions planned for the FY11

Princeton Plasma Physics Laboratory

274

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

NASA Astrophysics Data System (ADS)

Il est dorenavant etabli que les changements climatiques auront des repercussions sur les ressources en eau. La situation est preoccupante pour le secteur de production d'energie hydroelectrique, car l'eau constitue le moteur pour generer cette forme d'energie. Il sera important d'adapter les regles de gestion et/ou les installations des systemes hydriques, afin de minimiser les impacts negatifs et/ou pour capitaliser sur les retombees positives que les changements climatiques pourront apporter. Les travaux de la presente recherche s'interessent au developpement d'une methode de gestion des systemes hydriques qui tient compte des projections climatiques pour mieux anticiper les impacts de l'evolution du climat sur la production d'hydroelectricite et d'etablir des strategies d'adaptation aux changements climatiques. Le domaine d'etude est le bassin versant de la riviere Manicouagan situe dans la partie centrale du Quebec. Une nouvelle approche d'optimisation des ressources hydriques dans le contexte des changements climatiques est proposee. L'approche traite le probleme de la saisonnalite et de la non-stationnarite du climat d'une maniere explicite pour representer l'incertitude rattachee a un ensemble des projections climatiques. Cette approche permet d'integrer les projections climatiques dans le probleme d'optimisation des ressources en eau pour une gestion a long terme des systemes hydriques et de developper des strategies d'adaptation de ces systemes aux changements climatiques. Les resultats montrent que les impacts des changements climatiques sur le regime hydrologique du bassin de la riviere Manicouagan seraient le devancement et l'attenuation de la crue printaniere et l'augmentation du volume annuel d'apports. L'adaptation des regles de gestion du systeme hydrique engendrerait une hausse de la production hydroelectrique. Neanmoins, une perte de la performance des installations existantes du systeme hydrique serait observee a cause de l'augmentation des deversements non productibles dans le climat futur. Des strategies d'adaptation structurale ont ete analysees pour augmenter la capacite de production et la capacite d'ecoulement de certaines centrales hydroelectriques afin d'ameliorer la performance du systeme. Une analyse economique a permis de choisir les meilleures mesures d'adaptation et de determiner le moment opportun pour la mise en oeuvre de ces mesures. Les resultats de la recherche offrent aux gestionnaires des systemes hydriques un outil qui permet de mieux anticiper les consequences des changements climatiques sur la production hydroelectrique, incluant le rendement de centrales, les deversements non productibles et le moment le plus opportun pour inclure des modifications aux systemes hydriques. Mots-cles : systemes hydriques, adaptation aux changements climatiques, riviere Manicouagan

Haguma, Didier

275

DEPARTMENT OF PHYSICS Physics 35400  

E-print Network

DEPARTMENT OF PHYSICS Syllabus Physics 35400 Electricity and Magnetism II Designation potentials and radiation, special relativity. 3 HR./WK.; 3 CR. Prerequisites: Prereq.: Physics 35300; pre- or coreq.: Math 39200 (required for Physics majors, except those in the Biomedical Option). Textbook

Lombardi, John R.

276

Interstellar Dust: Contributed Papers  

NASA Technical Reports Server (NTRS)

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.

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

1989-01-01

277

Tevatron physics  

SciTech Connect

These lectures form a personal, and not necessarily comprehensive, survey of physics at the Fermilab Tevatron proton-antiproton collider. They cover detectors, analysis issues, and physics prospects for the current Tevatron run.

John Womersley

2003-01-03

278

Physical activity  

MedlinePLUS

Physical activity -- which includes an active lifestyle and routine exercise -- plus eating well, is the best way to ... shortness of breath when you are active Build physical activity into your regular routine Simple lifestyle changes can ...

279

Physical Therapy  

Microsoft Academic Search

\\u000a Physical therapists diagnose and manage conditions that cause movement dysfunction which affect an individual’s physical and\\u000a functional ability. They work toward restoring, maintaining, and promoting not only optimal physical function, but optimal\\u000a wellness, fitness, and quality of life as it relates to movement and health. Physical therapists provide interventions which\\u000a prevent the onset and progression of impairments, activity limitations, and

Victoria Marchese; Kripa Dholakia; Lori Brake

280

Physics and complexity  

PubMed Central

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

Sherrington, David

2010-01-01

281

Le monde arabe face aux d\\'efis de l'eau : enjeux et conflits  

E-print Network

In the past years, water has become a global concern. This essential and irreplaceable resource is unevenly distributed between Continents. North Africa and Middle East Arabic countries appear to be the most menaced area. From a starting point : 4.3% of the world population has access to only 0.67% of the resources for sustainable soft water. After decades of voluntarism, self-help, and of technical and development keen interest, times of worries have started. Since the 50's, all the efforts, in the Arabic World, have tended towards the mobilization of increasing volumes. The expected advantages of irrigated agriculture and production of electricity have been lauded, as well as the extension of distribution networks in cities and country side districts. Today's big construction works contribute to legitimize present acting teams: projects such as the Assouan high dam in Egypt, in its time the largest in the world and the Syrian dam of Tabqa, the Moroccan slogan for a million irrigated hectares. Under the trip...

Mutin, Georges

2009-01-01

282

“A Waste of Time”: Hispanic Women's Attitudes Toward Physical Activity  

Microsoft Academic Search

Despite a lack of studies on Hispanic midlife women's physical activity, the existing studies have indicated that Hispanics' ethnic-specific attitudes toward physical activity contributed to their lack of physical activity. However, little is still clearly known about Hispanic midlife women's attitudes toward physical activity. The purpose of this study was to explore Hispanic midlife women's attitudes toward physical activity using

Eun-Ok Im; Bokim Lee; Hyenam Hwang; Kyung Hee Yoo; Wonshik Chee; Alexa Stuifbergen; Lorraine Walker; Adama Brown; Chelsea McPeek; Michelle Miro; Eunice Chee

2010-01-01

283

Electrochemical dealloying of Al2(Au,X) (X = Pt, Pd, PtPd, Ni, Co and NiCo) alloys in NaCl aqueous solution.  

PubMed

The electrochemical dealloying of rapidly solidified Al2(Au,X) (X = Pt, Pd, PtPd, Ni, Co and NiCo) precursors in a 1.0 M NaCl aqueous solution has been systematically investigated using electrochemical measurements including open-circuit measurement, potentiodynamic polarization and potentiostatic polarization, and microstructural analysis. The results show that the kind of alloying element(s) has a significant influence on the open-circuit and corrosion potentials of the rapidly solidified Al2(Au,X) precursors. The bulk dealloying of the Al2(Au,X) precursors is affected by the kind of alloying element(s) and also sensitive to the applied potential (or overpotential). The addition of Ni or/and Co easily leads to passivation on the surface of precursors during potentiostatic dealloying. The potentiostatic dealloying of Al2(Au,Pt), Al2(Au,Pd) and Al2(Au,Pt,Pd) results in the formation of ultrafine nanoporous AuPt, AuPd and AuPtPd alloys, owing to the pinning effect of Pt or/and Pd on surface diffusion of Au adatoms. In comparison, the potentiostatic dealloying of Al2(Au,Ni), Al2(Au,Co) and Al2(Au,Ni,Co) leads to the formation of nanoporous Au with a ligament/channel size of ~40 nm due to the simultaneous dissolution of Al and Ni/Co. Moreover, the addition of Pt, Pd or PtPd not only inhibits surface diffusion of Au adatoms (lower diffusivities), but also improves the activation energy for the diffusion process during potentiostatic dealloying. Based upon the present results, nanoporous metals or alloys can be greenly fabricated through electrochemical dealloying in NaCl solutions. PMID:23455475

Wang, Yan; Xu, Junling; Wu, Bo

2013-04-21

284

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

PubMed

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

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

2012-06-01

285

Driving sound synthesis from a physics engine  

Microsoft Academic Search

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

Eoin Mullan

2009-01-01

286

Physics as an Enterprise of Process Philosophy  

ERIC Educational Resources Information Center

Physics, as a discipline, attempts to discern the mysteries of physical universe and it is also an inspiration for technological innovations which contribute to the good or demise of human civilization. While it continues to have tremendous impact on the technological front, one wonders if physics, as an enterprise engaged in providing a coherent…

Rangacharyulu, Chary

2005-01-01

287

Constructing Cardiovascular Fitness Knowledge in Physical Education  

ERIC Educational Resources Information Center

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…

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

2014-01-01

288

CLIMATE CHANGE 2013: THE PHYSICAL SCIENCE BASIS  

E-print Network

11 CLIMATE CHANGE 2013: THE PHYSICAL SCIENCE BASIS IPCC reports are policy-relevant but not policy Climate Change 2013: the Physical Science Basis . With this milestone, the first of three major IPCC Change 2013: The Physical Science Basis. Contribution of Working Group I to the Fifth Assessment Report

Plattner, Gian-Kasper

289

EMSL Contribution Plan  

SciTech Connect

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.

Campbell, Allison A.

2008-12-01

290

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.

291

PHENOMENES LIES AUX NOYAUX COMPOSES S e r v i c e de Physique Theorique, CEN Saclay, BP n02 -91, Gif-sur-Yvette  

E-print Network

PHENOMENES LIES AUX NOYAUX COMPOSES C. Bloch S e r v i c e de Physique Theorique, CEN Saclay, BP n r e n c e s consid6rables s u i v a n t l e s d i f f e r e n t s N. Bohr e n 1936 e s t pratiquement a u s s i v i e i l l e Q t a t s n u c l e a i r e s e n t r e le-s i n t e g r a l e s d e

Boyer, Edmond

292

QCM sur le programme des TD7 et TD8 Vous devez pouvoir rpondre aux questions avec les tables distribues et une calculatrice.  

E-print Network

Correction QCM sur le programme des TD7 et TD8 Vous devez pouvoir répondre aux questions avec les, B, C et D, avec probabilité pA, pB, pC, pD. On a récolté un échantillon de telles variables, les eectuer le test suivant, en utilisant un test du 2 : H0 : pA = 0.4; pB = 0.4; pC = 0.1; pD = 0.1. Ha : (p

Barré, Julien

293

Physics Education  

NSDL National Science Digital Library

Based at Harvard University, the Mazur Group is headed by Professor Eric Mazur who teaches physics and applied physics. Professor Mazur, his lab colleagues, and students worked to create this website on physics education. The site brings their own research into the classroom experience and provides resources for teaching physics. The "Areas of Research" includes information on collaborative learning via peer instruction, gender differences in introductory physics courses, and the value of classroom demonstrations. Each of these areas contains a brief summary of the Mazur Group's work in each area, and visitors can sign up for updates. Further down on the site, visitors can look through a book on peer instruction (complete with resource material) and the proceedings from a National Science Foundation conference that deals with teaching physics.

294

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.

2010-05-25

295

Spin Physics at Compass  

E-print Network

COMPASS is a new fixed target experiment presently in operation at CERN. It has the goal to investigate hadron structure and hadron spectroscopy by using either muon or hadron beams. From measurements of various hadron asymmetries in polarized muon - nucleon scattering it will be possible to determine the contribution of the gluons to the nucleon spin. Main objective of the hadron program is the search of exotic states, and glueballs in particular. This physics programme is carried out with a two-stage magnetic spectrometer, with particle identification and calorimetry in both stages, which has started collecting physics data in 2002, and will run at the CERN SPS at least until 2010. Preliminary results from the 2002 run with a 160 GeV muon beam are presented for several physics channels under investigation.

F. Bradamante

2004-11-24

296

The Physics of Semiconductors  

NASA Astrophysics Data System (ADS)

The historic development of semiconductor physics and technology began in the second half of the 19th century. Interesting discussions of the early history of the physics and chemistry of semiconductors can be found in treatises of G. Busch [2] and Handel [3]. The history of semiconductor industry can be followedin the text of Morris [4] and Holbrook et al. [5]. In 1947, the realization of the transistor was the impetus to a fast-paced development that created the electronics and photonics industries. Products founded on the basis of semiconductor devices such as computers (CPUs, memories), optical-storage media (lasers for CD, DVD), communication infrastructure (lasers and photodetectors for optical-fiber technology, high frequency electronics for mobile communication), displays (thin film transistors, LEDs), projection (laser diodes) and general lighting (LEDs) are commonplace. Thus, fundamental research on semiconductors and semiconductor physics and its offspring in the form of devices has contributed largely to the development of modern civilization and culture.

Grundmann, Marius

297

Physics Notes.  

ERIC Educational Resources Information Center

Describes equipment, activities, and experiments useful in physics instruction, including among others, a list of articles relating to physics topics, computer interface that makes a computer cost effective, use of a guitar in vibrating string experiments, and photoelectric aids to the measurement of distance, speed, velocity, and acceleration.…

School Science Review, 1980

1980-01-01

298

Plasma Physics  

Microsoft Academic Search

Beginning at an introductory level, this text presents a thorough treatment of plasma physics, including an extensive discussion of its applications in thermonuclear fusion research. A novel feature of this book is its comprehensive description of the various concepts and formulas widely used in fusion theory based on the fundamental equations of the plasma fluid. The physics of fusion plasmas

Kyoji Nishikawa; Masashiro Wakatani

1990-01-01

299

Nuclear physics  

Microsoft Academic Search

Low energy nuclear physics rather than high energy, or elementary ; particle physics is considered. Nuclear structure at a fairly basic level, spin ; and static electric and magnetic moments, approached from quantum mechanics ; rather than through the vector model of angular momentum, nuclear decay: both ; electromagnetic and beta-decay are treated using quantum mechanics, but without ; formal

Bowler

1973-01-01

300

Physics World  

NSDL National Science Digital Library

Created by the Institute of Physics, Physics World brings together "news, views and information for the global physics community." First-time users may wish to wander through the site's blog, which contains compelling entries on how athletes could benefit from an understanding of the physics of their sports. The site is also a fast-moving place to get news from the field, via the Headlines area. Scholars and others should scroll down to the White Papers area, which features compelling new works from a range of institutes and professional organizations. The Multimedia section is quite a pip, as it contains reports on the hunt for the elusive Higgs boson and a report on how plasma applications are shaping the modern world. Finally, the In depth area collects reports from the world's leading physicists and professional science writers on topics from radioactive contamination to modeling the entire universe. Interested visitors can sign up for the Physics World RSS feeds on the site.

2012-07-13

301

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

...Certain contributions not treated as employee contributions. The term employee contributions does not include designated Roth contributions, repayment of loans, rollover contributions, repayment of distributions described in section...

2014-04-01

302

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

Code of Federal Regulations, 2010 CFR

...Certain contributions not treated as employee contributions. The term employee contributions does not include designated Roth contributions, repayment of loans, rollover contributions, repayment of distributions described in section...

2010-04-01

303

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

Code of Federal Regulations, 2013 CFR

...Certain contributions not treated as employee contributions. The term employee contributions does not include designated Roth contributions, repayment of loans, rollover contributions, repayment of distributions described in section...

2013-04-01

304

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

Code of Federal Regulations, 2011 CFR

...Certain contributions not treated as employee contributions. The term employee contributions does not include designated Roth contributions, repayment of loans, rollover contributions, repayment of distributions described in section...

2011-04-01

305

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

Code of Federal Regulations, 2012 CFR

...Certain contributions not treated as employee contributions. The term employee contributions does not include designated Roth contributions, repayment of loans, rollover contributions, repayment of distributions described in section...

2012-04-01

306

AYUVERDA’S CONTRIBUTION TO SPORTS MEDICINE  

E-print Network

throughout the events, heightened physical and mental stamina are the basic needs of sportsmen. Here, the author attempts to find out the ways and means of utilizing the poten-tial of Ayurveda in the field of sports and its original contribution to sports medicine. In the modern world, medical science has to play many roles in various fields, including the sports. Sports medicine which is almost a new branch of medical science deals with the health of sportsman and sportswoman taking into consideration of his/her specific physical and mental condition, the approach to which is some what different from that of a normal human being. The enormous amount of stress, both physical and mental, under which the sportsman has to work is a factor which makes the approach rather unique. Sports medicine has two goals to achieve. Primarly fitness of the sportsman and second goal is treating the sporting injuries of the sportsman. The fitness of the sportsman is not merely his healthy condition but it is a state his healthy condition but it is a state of physical and mental endurance to extreme stress. Even though the injuries of any other kind do not distinctly vary from those of sports, the aetiology and line of treatment may have to be considered with different view. Apart from the injuries, extreme fatigue and allied problems also have

Ashok D. Satpute

1986-01-01

307

Disuse and deconditioning in chronic low back pain: concepts and hypotheses on contributing mechanisms  

Microsoft Academic Search

For years enhancement of a patient’s level of physical fitness has been an important goal in rehabilitation treatment in chronic low back pain (CLBP), based on the hypothesis that physical deconditioning contributes to the chronicity of low back pain. However, whether this hypothesis in CLBP holds is not clear. In this paper, possible mechanisms that contribute to the development of

Jeanine A Verbunt; Henk A Seelen; Johan W Vlaeyen; Geert J van de Heijden; Peter H Heuts; Kees Pons; J Andre Knottnerus

2003-01-01

308

Mecanismo(s) de Acción de las Auxinas y los Herbicidas Auxínicos - Parte 1- Introducción  

NSDL National Science Digital Library

Descripción:El control selectivo de malezas de hoja ancha en cultivos de cereales utilizando herbicidas auxínicos ha hecho de éstos una de las familias de herbicidas actualmente en uso más ampliamente distribuidas e importantes. Estos herbicidas fueron los primeros herbicidas orgánicos desarrollados que presentaron selectividad; es decir, capaces de matar un cierto grupo de plantas sin afectar a otros grupos (por ejemplo: matar plantas de hoja ancha pero no las de hoja angosta; en este documento se utilizará el término "gramíneas" para referirse a las plantas de hoja angosta o cereales). En esta lección se presentarán las principales características de los herbicidas auxínicos, se discutirán sus principales usos y se describirán los síntomas de daño que causan. De igual forma, se indicará la forma en que estos herbicidas matan a las plantas sensibles.

309

The Physics of Hang Gliding  

NASA Astrophysics Data System (ADS)

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.

Hewett, Lionel D.

2008-03-01

310

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)

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.

Lasri, Abdel-Halim

311

Advancements in Solar Neutrino Physics  

NASA Astrophysics Data System (ADS)

We review the results of solar neutrino physics, with particular attention to the data obtained and the analyses performed in the last decades, which were determinant to solve the solar neutrino problem (SNP), proving that neutrinos are massive and oscillating particles and contributing to refine the solar models. We also discuss the perspectives of the presently running experiments in this sector and of the ones planned for the near future and the impact they can have on elementary particle physics and astrophysics.

Miramonti, Lino; Antonelli, Vito

2013-05-01

312

DEPARTMENT OF PHYSICS Physics 20300  

E-print Network

therapy) and for liberal arts students. Fundamental ideas and laws of physics from mechanics to modern and dynamics 7. understand the fundamentals of simple harmonic motion 8. understand the properties of fluids 9 at an appropriate introductory level in important fields of classical physics, including mechanics, electricity

Lombardi, John R.

313

TEACHING PHYSICS: Teaching particle physics  

NASA Astrophysics Data System (ADS)

Particle physics attracts many students who hear of news from CERN or elsewhere in the media. This article examines which current A-level syllabuses include which bits of particle physics and surveys the many different types of resource available to teachers and students.

Hanley, Phil

2000-09-01

314

Physics & Astronomy Degree options  

E-print Network

148 Physics & Astronomy Degree options BSc (Single Honours Degrees) Astrophysics Physics MPhys (Single Honours Degrees) Astrophysics Physics Theoretical Physics BSc (Joint Honours Degrees) Physics) Theoretical Physics and Mathematics MSci (Joint Honours Degree) Physics and Chemistry Entrance Requirements

Brierley, Andrew

315

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

NASA Astrophysics Data System (ADS)

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

Ezrailson, Cathy M.

2006-12-01

316

Workshop Physics  

NSDL National Science Digital Library

Workshop Physics is an activity-based approach to teaching calculus-based introductory physics in which traditional lectures are replaced by student investigation. Students do experiments in which they make predictions as well as observations and analysis; they perform guided derivations of major concepts; and they use computer tools to develop mathematical models. All the activities and materials needed for a two-semester course are available. Workshop Physics was developed and class-tested by Priscilla Laws of Dickinson College and coworkers.

Laws, Priscilla W.

2009-03-20

317

Physics Phridays  

NASA Astrophysics Data System (ADS)

Teaching high school physics involves cheerleading, coaching, and acting (in addition to course preparation, equipment maintenance/construction, and grading). One is like a performer that has to be "on" all the time to keep the attention and interest of students in order to engage them in the content. But what happens once the course is over? We hope that we have sparked some interest in physics that will continue and that our students take what they've learned with them, but the reality is often disappointing. Can we do better than hope? "Physics Phridays" might be a starting point.

Falbo, Maria

2007-12-01

318

Relativistic heavy ion physics  

SciTech Connect

In 1992 a proposal by the Iowa State University experimental nuclear physics group entitled Relativistic Heavy Ion Physics'' was funded by the US Department of Energy, Office of Energy Research, for a three-year period beginning November 15, 1991. This is a progress report for the first six months of that period but, in order to give a wider perspective, we report here on progress made since the beginning of calendar year 1991. In the first section, entitled Purpose and Trends,'' we give some background on the recent trends in our research program and its evolution from an emphasis on nuclear structure physics to its present emphasis on relativistic heavy ion and RHIC physics. The next section, entitled, Physics Research Programs,'' is divided into three parts. First, we discuss our participation in the program to develop a large detector named PHENIX for the RHIC accelerator. Second, we outline progress made in the study of electromagnetic dissociation (ED). A highlight of this endeavor is experiments carried out with the {sup 197}Au beam from the AGS accelerator in April 1991. Third, we discuss progress in completion of our nuclear structure studies. In the final section a list of publications, invited talks and contributed talks starting in 1991 is given.

Hill, J.C.; Wohn, F.K.

1992-01-01

319

Physics For Dummies  

NASA Astrophysics Data System (ADS)

The fun and easy way to understand the basic principles of physics How does gravity work? What does e=mc2 really mean? And what's a charm quark? Physics For Dummies answers these questions and more, explaining the basics of physical science and its importance in our everyday lives in a simple, clear, and entertaining fashion. Whether readers are taking a class, helping kids with homework, or are simply interested in how the world works, this plain-English guide gives them the knowledge they need to understand basic physics. Through real-world examples and problems, it covers such key topics as motion, energy, and waves (sound, light, wave-particle); solids, liquids, and gases; thermodynamics; electromagnetism; relativity; atomic and nuclear structures; and the Big Bang and stars. Steven Holzner, PhD (Ithaca, NY), is the author of more than 40 books and a former contributing editor at PC Magazine. He has been on the faculty of MIT and taught Physics 101 and 102 at Cornell for over ten years.

Holzner, Steve; Ph., D.

2005-11-01

320

PLASMA PHYSICS & RADIATION TECHNOLOGY Dutch Physical Society  

E-print Network

22nd SYMPOSIUM PLASMA PHYSICS & RADIATION TECHNOLOGY Dutch Physical Society Section Plasma and Gas Discharge Physics & Research school Center for Plasma Physics and Radiation Technology Nederlandse collaboration with the research school `Center for Plasma Physics and Radiation Technology' Members

Eindhoven, Technische Universiteit

321

Physical Abuse  

MedlinePLUS

... Physical indicators Sprains, dislocations, fractures, or broken bones Burns from cigarettes, appliances, or hot water Abrasions on arms, legs, or torso that resemble rope or strap marks Internal injuries evidenced by pain, difficulty with normal functioning ...

322

Contest Physics.  

ERIC Educational Resources Information Center

Discusses the use of contests to keep physics interesting and exciting for the students. Includes: balloon car, egg drop, tennis ball catapult, bridge building, mousetrap vehicle, musical instrument, slide photo, electric junk dissection, windmill generator, and solar heater. (MVL)

Moehnke, Randy

1994-01-01

323

Physical Therapists  

MedlinePLUS

... Offices of physical, occupational and speech therapists, and audiologists 33% Hospitals; state, local, and private 28 Home ... Job Duties ENTRY-LEVEL EDUCATION 2012 MEDIAN PAY Audiologists Audiologists diagnose and treat a patient’s hearing and ...

324

Atomic Physics  

NSDL National Science Digital Library

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.

Griffith, Christopher

325

Magic Physics?  

ERIC Educational Resources Information Center

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.)

Featonby, David

2010-01-01

326

Physics Notes  

ERIC Educational Resources Information Center

Twelve ideas are presented for physics teachers to implement in the laboratory or classroom. Topics covered include electromagnetic induction, microbalance, capacitors, determination of light velocity, and the compound pendulum. Information regarding laboratory equipment is also provided. (PS)

School Science Review, 1972

1972-01-01

327

Astroparticle Physics  

NASA Astrophysics Data System (ADS)

Astroparticle is a very wide, expanding, sector of Physics; this report covers only a fraction of it complementing the plenary reports of Y. Takahashi and K. Inoue. I will focus, in particular, on the experimental evidence of new physics, beyond the Standard Model. Astroparticle and accelerator experiments will give complementary tools in the search of new particles, like those of the dark matter, and new fundamental fields, like the inflaton.

Bettini, A.

2007-11-01

328

Astroparticle Physics  

NASA Astrophysics Data System (ADS)

Astroparticle is a very wide, expanding, sector of Physics; this report covers only a fraction of it complementing the plenary reports of Y. Takahashi and K. Inoue. I will focus, in particular, on the experimental evidence of new physics, beyond the Standard Model. Astroparticle and accelerator experiments will give complementary tools in the search of new particles, like those of the dark matter, and new fundamental fields, like the inflaton.

Bettini, A.

329

Nuclear physics  

SciTech Connect

This book is a simple and direct introduction to the tools of modern nuclear physics, both experimental and mathematical. Emphasizes physical intuition and illuminating analogies, rather than formal mathematics. Topics covered include particle accelerators, radioactive series, types of nuclear reactions, detection of the neutrino, nuclear isomerism, binding energy of nuclei, fission chain reactions, and predictions of the shell model. Each chapter contains problems and illustrative examples. Pre-requisites are calculus and elementary vector analysis.

Patel, S.B. (Ramnarain Ruia Coll., Bombay (India))

1991-01-01

330

Nuclear physics  

SciTech Connect

A simple and direct introduction to the tools of modern nuclear physics, both experimental and mathematical. Emphasizes physical intuition and illuminating analogies, rather than formal mathematics. Topics covered include particle accelerators, radioactive series, types of nuclear reactions, detection of the neutrino, nuclear isomerism, binding energy of nuclei, fission chain reactions, and predictions of the shell model. Each chapter contains problems and illustrative examples. Prerequisites are calculus and elementary vector analysis.

Patel, S.B.

1988-01-01

331

Nuclear Physics  

Microsoft Academic Search

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

E. M. Henley; J. P. Schiffer

1935-01-01

332

Physics Portal  

NSDL National Science Digital Library

As part of the Journal Nature's Web site, the Physics Portal, is an online resource providing physicists easy access to timely, relevant research. After the free registration users can view current and past articles, arranged by subject including everything from astro to quantum physics. The site also contains news articles, meeting and job information, a links page, and more, making it a must-stop for any researcher or educator in the field.

2002-01-01

333

Understanding Physics  

Microsoft Academic Search

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

Robin Jakeways

1998-01-01

334

Charm physics  

NASA Astrophysics Data System (ADS)

Charm physics is an active and productive field at hadron colliders. In these proceedings an overview of recent results in charm physics from the Tevatron and LHC experiments is given. Highlighted are the measurements of open charm production and production asymmetries, the recent precision measurements of the D masses, the confirmation of mixing in the D0 system, the searches for CP violation in the charm system and the searches for rare charm decays.

van Tilburg, J.

2013-11-01

335

Nuclear Physics  

E-print Network

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.

E. M. Henley; J. P. Schiffer

1998-07-15

336

Neutrino Physics  

E-print Network

These lectures aim at providing a pedagogical overview of neutrino physics. We will mostly deal with standard neutrinos, the ones that are part of the Standard Model of particle physics, and with their standard dynamics, which is enough to understand in a coherent picture most of the rich data available. After introducing the basic theoretical framework, we will illustrate the experimental determination of the neutrino parameters and their theoretical implications, in particular for the origin of neutrino masses.

Andrea Romanino

2012-01-30

337

Contemporary Physics  

NASA Astrophysics Data System (ADS)

section I. Synchroton radiation and applications. 1. Physics and biology: applications of synchroton radiation in biology / Louise N. Johnson. 2. Sesame - a project to foster science and peace and its relevance for the region / Herwig Schopper. 3. The impact of synchroton light sources on science and society in developing countries / Herman Winick -- section II. Quantum physics and quantum information. 1. Discrimination of quantum states with selected applications / János A. Bergou. 2. Physical problems of brain-computer interfacing / Peter Fromherz. 3. NMR implementation of exponential sums for integer factorization / M. Stefanák ... [et al.] -- section III. Nonlinear phenomena and plasma physics. 1. Complexity and hydrodynamic turbulence / K. R. Sreenivasan. 2. Nonlinear interactions in quantum systems / P. K. Shukla and B. Eliasson. 3. Vortex in plasmas - topology, singularity and scale hierarchy / Z. Yoshida -- section IV. Nanophysics and applications. 1. Symmetry and novelty in the electronic and geometric structure of nanoalloys: the case of Ag[symbol]Cu[symbol] / M. Alcántara Ortigoza and T. S. Rahman. 2. New approaches to photovoltaic and photoelectrochemical energy conversion / S. Ismat Shah ... [et al.] -- section V. Particle physics, gravity and cosmology. 1. Theoretical interest in B-meson physics at the B factories, tevatron and the LHC / Ahmed Ali. 2. Quantum gravity and black holes / Viqar Husain. 3. Constraints on alternative theories of gravity and cosmology / Alexander F. Zakharov.

Aslam, Jamil; Hussain, Faheem; Riazuddin

2008-04-01

338

Uncapacitated facility location problems: contributions  

Microsoft Academic Search

The objective of the present paper is to review my personal contributions in the field of uncapacitated facility location problems. These contributions took place throughout my academic career, from the time I was a Ph.D. student at Imperial College to the present day. They cover approximately 30 years, from 1973 to 2003; they address: algorithms developed for the p-median problem

Roberto Diéguez Galvão

2004-01-01

339

Contribution of gallium experiments to the understanding of solar physics and neutrino physics  

SciTech Connect

The results of gallium measurements of solar neutrino and measurements with artificial sources of neutrinos are presented. Conclusions are drawn from these results, and the potential of the SAGE experiment for studying transitions of active neutrinos to sterile states for {Delta}m{sup 2} > 0.5 eV{sup 2} and a sensitivity of a few percent to the disappearance of electron neutrinos is examined.

Gavrin, V. N., E-mail: gavrin@inr.ru [Russian Academy of Sciences, Institute for Nuclear Research (Russian Federation)

2013-10-15

340

Etude de films minces de CuInS2, CuIn1-xGaxS2, et Cu2ZnSnS4, élaborés par voie sol-gel, destinés aux applications photovoltaïques.  

E-print Network

??Ce travail de recherche porte sur l’élaboration et la caractérisation de films minces photo-absorbants de CuInS2, CuIn1-xGaxS2, et de Cu2ZnSnS4 destinés aux applications photovoltaïques. Les… (more)

Bourlier, Yoan

2013-01-01

341

Physics Based on Physical Monism  

E-print Network

Based on a physical monism, which holds that the matter and space are classified by not a difference of their kind but a difference of magnitude of their density, I derive the most fundamental equation of motion, which is capable of providing a deeper physical understanding than the known physics. For example, this equation answers to the substantive reason of movement, and Newton's second law, which has been regarded as the definition of force, is derived in a substantive level from this equation. Further, the relativistic energy-mass formula is generalized to include the potential energy term, and the Lorentz force and Maxwell equations are newly derived.

Seong-Dong Kim

2005-09-08

342

Physical Processes in Stellar Interiors  

NASA Technical Reports Server (NTRS)

The author set himself three fundamental tasks: (1) To show how modern atomic and nuclear physics can contribute to the description of processes in stellar interiors. (2) To present the fundamentals of the methods for calculating physical processes taking place at temperatures of millions of degrees. (3) To provide the required minimum of information on problems of atomic and nuclear physics to astrophysicists, and on astronomical problems to physicists. The book is divided into four parts, the Introduction, the Theory of Stationary Processes, the Applications of the Theory of Stationary Processes and the Theory of Non-Stationary Processes.

Frank-Kamenetskii, D. A.

1962-01-01

343

Des Artefacts aux Programmes  

Microsoft Academic Search

For some years, ontology research has investigated the field of computer programs, the main objective being to have at one's disposal formal descriptions of the programs so as to master their design and use. In line with these efforts, we currently develop a \\

Gilles Kassel; Pascal Lando; Anne Lapujade

344

A Semantic Contribution to Choctaw Referencial Coding Phenomena  

E-print Network

hands po-gatX ta-X im-s-o:?a mood-thorny different-UT your-mood-cry get thorns in them, you will cry. ' ?a-?a. Aux-Decl Payne (1980) also reports similar data in Chickasaw, the Musko gean language most closely related to Choctaw. She claims that when...

Davies, William D.

1982-01-01

345

CONTRIBUTION A L'TUDE DES CHANGES NERGTIQUES DU MOUTON  

E-print Network

. - Conclusion : utilisation des résultats obtenus pour le calcul des rations destinées aux moutons. I. - EXPOS� pour le dosage du méthane, après combustion à la grille de ce dernier pour obtenir sa transformation en

Boyer, Edmond

346

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, OhmâÂÂs 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 questionâÂÂs 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.

2007-04-18

347

Smithsonian Contributions to Anthropology Smithsonian Contributions to Astrophysics Smithsonian Contributions to Botany Smithsonian Contributions to the Earth Sciences Smithsonian Contributions to the Marine Sciences Smithsonian Contributions to Paleobiol  

E-print Network

SMITHSONIAN CONTRIBUTIONS TO ZOOLOGY • NUMBER 507SERIES PUBLICATIONS OF THE SMITHSONIAN INSTITUTION Emphasis upon publication as a means of "diffusing knowledge " was expressed by the first Secretary of the Smithsonian. In his formal plan for the Institution, Joseph Henry outlined a program that included the following statement: "It is proposed to publish a series of reports, giving an account of the new discoveries in science, and of the changes made from year to year in all branches of knowledge. " This theme of basic research has been adhered to through the years by thousands of titles issued in series publications under the Smithsonian imprint, commencing with Smithsonian Contributions to Knowledge in 1848 and continuing with the following active series:

Fowler (pisces Ostariophysi; Richard P. Vari; Smithsonian Folklife Studies; Robert Mcc Adams; Richard P. Vari

348

30 September 2013 WORKING GROUP I CONTRIBUTION TO THE IPCC FIFTH ASSESSMENT REPORT  

E-print Network

with the document entitled "Climate Change 2013: The Physical Science Basis. Working Group I Contribution CHANGE 2013: THE PHYSICAL SCIENCE BASIS Chapter 5: Information from Paleoclimate Archives - Final Draft 2013: THE PHYSICAL SCIENCE BASIS Final Draft Underlying Scientific-Technical Assessment A report

Phipps, Steven J.

349

30 September 2013 WORKING GROUP I CONTRIBUTION TO THE IPCC FIFTH ASSESSMENT REPORT  

E-print Network

with the document entitled "Climate Change 2013: The Physical Science Basis. Working Group I Contribution CHANGE 2013: THE PHYSICAL SCIENCE BASIS Chapter 11: Near-term Climate Change: Projections 2013: THE PHYSICAL SCIENCE BASIS Final Draft Underlying Scientific-Technical Assessment A report

Frierson, Dargan

350

[Physical urticarias].  

PubMed

Ten percent of chronic urticarias are physical urticarias. Patients suffering from physical urticaria all have a suggestive history with specific eliciting stimuli (cold, heat, water, sun.) and wheals in the areas where the stimulus acts. The involved pathomechanisms are not well known. An unknown allergen (related to a cold or a heat injury, a polar molecule contained in the stratum corneum and soluble into water, a photoallergen) could induce a mast cell mediator release, followed by an infiltration by eosinophil then neutrophils polymorphonuclears. T-cells are not highly involved. Dermographism, the most frequent can be cured by anti-H1. In diagnosing cholinergic urticaria physical exercise has to be done by the patient (jogging, running, riding), anti-H1 are efficient. In other physical urticarias (delayed-pressure, cold, solar, heat, vibratory urticarias) as to be managed as follows: (1) to perform specific tests with respectively (weights; ice cube; UVA, UVB and visible light exposure; hot water contained in a tube; a vortex mixer); (2) to avoid eliciting stimuli; (3) to treat the associated diseases e.g. in secondary cold urticaria; (4) to try to induce a physical tolerance, a review is enclosed concerning cold, solar, heat and aquagenic urticarias; (5) to associate or not non sedative 2(nd) generation antihistamines. All the other alternative treatments are discussed but none of them has been evaluated. PMID:12843805

Barbaud, A

2003-05-01

351

Lattice QCD for nuclear physics  

NASA Astrophysics Data System (ADS)

A brief overview of the current and expected contributions of lattice QCD to various aspects of low-energy nuclear physics is presented. Recent investigations of light nuclei, hyperon-nucleon and nucleon-nucleon interactions are discussed and a first investigation of multi-hadron structure is highlighted.

Detmold, William

2013-11-01

352

What can I do with a degree in Physical Education?  

E-print Network

What 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 individuals and society, physical education at the University of Canterbury focuses on a balance between

Hickman, Mark

353

Physics Results from COMPASS  

E-print Network

The COMPASS Experiment at the CERN SPS has a broad physics program focused on the nucleon spin structure and on hadron spectroscopy, using muon and hadron beams. Main objectives for the spin program with the muon beam are the direct measurement of the gluon contribution to the spin of the nucleon, semi-inclusive measurements, and the measurement of the transverse spin distribution $\\Delta_T q$. The COMPASS apparatus consists of a two-stage large acceptance spectrometer designed for high data rates and equipped with high-resolution tracking, particle identification and electromagnetic and hadronic calorimetry. The data taking is ongoing since 2002 and till now was mainly devoted to the spin programme using a 160 GeV$/c$ naturally polarized, $\\mu^+$ beam and a polarized \\mrf{^6LiD} target. First physics results from the 2002 and 2003 runs are presented.

A. Bressan

2005-01-17

354

Coronal and chromospheric physics  

NASA Technical Reports Server (NTRS)

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.

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

1983-01-01

355

Physics Frontline  

NSDL National Science Digital Library

The Physics Frontline blog covers the latest scientific news, analysis, and commentary on the intersection of physics with science policy issues, including innovation, energy, climate change, and nuclear policy. It's an initiative created by the American Physical Society (APS) as a public service and as a way to keep its own members in-the-know about pressing matters. First-time users can get started by looking over the Most Popular area to read some of the most compelling items here submitted on subjects such as nuclear power plant licensing procedures. The blog is updated about once a week and visitors can scroll through previous posts dating back to October 2009. Some recent posts of note include "America Can't Afford to Ignore Science" which offers a clarion call to those concerned about the future of science education. Finally, users can also check out a helpful tag cloud for items of topical interest, such as "advocacy" and "STEM."

2014-07-29

356

Leading-order hadronic contributions to $g_?-2$  

E-print Network

We present preliminary lattice results for the leading-order hadronic contribution to the muon anomalous magnetic moment, calculated with HEX-smeared clover fermions. In our calculation we include 2+1-flavor ensembles with pions at the physical mass.

Eric B. Gregory; Zoltan Fodor; Christian Hoelbling; Stefan Krieg; Laurent Lellouch; Rehan Malak; Craig McNeile; Kalman Szabo

2013-11-18

357

SEQUENCE ANALYSIS Contributions by Ulam  

E-print Network

can make to biology. A quick tour of systematic theory in- evitably would start with Darwin's grand at the University of Colorado and who was, and is, exceedingly optimistic about the contribution systematic theory

358

Transposition des gros vaisseaux associ?e aux communications interventriculaire et interauriculaire: ? propos d'un cas et revue de la litt?rature  

PubMed Central

Nous rapportons une observation d'un nourrisson de 5 mois présentant une transposition des gros vaisseaux associée aux communications interventriculaire et interauriculaire. Il est né à terme sans aucun facteur de risque retrouvé dans les antécédents maternels. Le diagnostic est posé, grâce à une échocardiographie, à 5 mois après sa naissance lors de la survenue d'une cyanose et d'un malaise anoxique. Une prise en charge symptomatique a permis de stabiliser l’état du patient mais suite à l'absence d'un traitement chirurgical, il est décédé à domicile 3 semaines après sa sortie de l'hôpital. Dans les pays en développement, le diagnostic de la transposition des gros vaisseaux est souvent fait en période postnatale et son pronostic reste fatal par manque des centres médico-chirurgicaux spécialisés. PMID:24009800

Mutombo, Augustin Mulangu; Mukuku, Olivier; Lubala, Toni Kasole; Kabuya, Maguy Sangaji; Ilunga, Paul Makinko; Bugeme, Marcellin; Luboya, Oscar Numbi

2013-01-01

359

Physical Linguistics.  

ERIC Educational Resources Information Center

Physical linguistics is defined as the use of treatments from the field of speech pathology to enhance first and second language production in healthy individuals, resulting in increased quality and strength of phonation and articulation. A series of exercises for treating dysarthria (weakness, paralysis, discoordination, primary and secondary…

Tice, Bradley S.

360

Physics Notes.  

ERIC Educational Resources Information Center

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)

School Science Review, 1982

1982-01-01

361

DOING Physics.  

ERIC Educational Resources Information Center

Several good features of a projectile motion experiment (students fire their own rockets) are described, including accuracy achieved, low cost and relative safety. Also described is a simple novelty toy (originally distributed by McDonalds foods) illustrating physics concepts. Blowing on this toy pipe propels a thread around in a loop. (JN)

Zwicker, Earl, Ed.

1983-01-01

362

Medical physics  

Microsoft Academic Search

Terminology and modeling and measurement methods are discussed in Chapter 1. Energy, work, power, force, and pressure as they relate to the body are discussed in Chapters 2, 5, and 6. The physics of the skeletal, respiratory, cardiovascular, and nervous systems as well as the eye and ear is discussed in Chapters 3, 7, 8, 9, 13, and 15. Applications

John R. Cameron; J. G. Skofronick

1978-01-01

363

Computational Physics.  

ERIC Educational Resources Information Center

Describes an optional course in "computational physics" offered at the University of Birmingham. Includes an introduction to numerical methods and presents exercises involving fast-Fourier transforms, non-linear least-squares, Monte Carlo methods, and the three-body problem. Recommends adding laboratory work into the course in the future. (TW)

Borcherds, P. H.

1986-01-01

364

Thermal Physics  

Microsoft Academic Search

Suitable for both undergraduates and graduates, this textbook provides an up-to-date, accessible introduction to thermal physics. The material provides a comprehensive understanding of thermodynamics, statistical mechanics, and kinetic theory, and has been extensively tested in the classroom by the author who is an experienced teacher. This book begins with a clear review of fundamental ideas and goes on to construct

Ralph Baierlein; Gayle Cook

1999-01-01

365

Physics & reality  

Microsoft Academic Search

Editor's Note: There is probably no modern scientist as famous as Albert Einstein. Born in Germany in 1879 and educated in physics and mathematics at the Swiss Federal Polytechnic School in Zurich, he was at first unable to find a teaching post, working instead as a technical assistant in the Swiss Patent Office from 1901 until 1908. Early in 1905,

Albert Einstein

2003-01-01

366

Quantum Physics  

Microsoft Academic Search

In Quantum Mechanics operators must be hermitian and, in a direct product space, symmetric. These properties are saved by Lie algebra operators but not by those of quantum algebras. A possible correspondence between observables and quantum algebra operators is suggested by extending the definition of matrix el- ements of a physical observable, including the eventual projection on the appro- priate

E. Celeghini; M. A. del Olmo

1969-01-01

367

Physics Notes.  

ERIC Educational Resources Information Center

Discusses some high school physics demonstrations and experiments on a variety of topics: such as uses of the dipole, the vapour-liquid critical point, velocity of sound in metallic rods, the flux-density near a bar magnet, and a different style logic gate using basic units. (GA)

School Science Review, 1978

1978-01-01

368

"Explosive" Physics.  

ERIC Educational Resources Information Center

Describes a physics demonstration in which two-liter plastic bottles can be used to show how force relates to pressure and area. Identical drinking straws are launched out of similar plastic bottles with different-sized openings. This demonstration proves qualitatively that pressure is inversely proportional to the area exposed to an object when a…

Kienzynski, Mark J.

1998-01-01

369

Physics Topics  

NSDL National Science Digital Library

This web site contains in-depth notes with examples and practice problems for several topics in introductory physics and astronomy. Some of these topics include classical mechanics, geometric optics, celestial mechanics, and stellar atmospheres; the heat and thermodynamics section has been removed. All of the topics may be downloaded for use as pdf documents offline.

Tatum, Jeremy B.

2008-05-16

370

Unifying Physics  

NASA Astrophysics Data System (ADS)

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.

Goradia, Shantilal

2013-04-01

371

Physical Units  

NSDL National Science Digital Library

This page, authored by Rod Nave at Georgia State University, describes units of measurement, unit conversions, dimensional analysis and basic mechanical quantities. Length, Mass and Time link to separate pages that go into more detail on the physical quantities and their definitions. Also included is a link to a page that does unit conversions for the user.

Nave, Rod

2010-01-14

372

Department of Energy Office of Nuclear Physics  

E-print Network

Department of Energy Office of Nuclear Physics Reviewer Excerpts from the Technical, Cost, Schedule. The construction of the MRPCs is paid and done by China. Thus, the contribution of China to the project is sizable-TOF would also allow a lepton program extending to heavy flavor particles that could potentially contribute

Llope, William J.

373

Physics Demonstrations: Fowler's Physics Applets  

NSDL National Science Digital Library

Michael Fowler, Commonwealth Professor of Physics at the University of Virginia, offers this prime collection of (some still in progress) physics demonstrations. Applets (Java) demonstrate such classic principles as Newton's Cannon (in which the user may fire red cannonballs at different velocities from a tall mountain -- and see which of them will orbit the earth), Group Velocity and Phase Velocity, Two-dimensional Collisions, Projectile Motion, Brownian Motion, and One-dimensional One-atom classical Gas, among others. Inquisitive users may download the applet as a .zip file, as source code, or with related class materials. A series of related applets are listed, as are links to resources such as TIPTOP, The Internet Pilot to Physics (described in the April 19, 1996 Scout Report).

374

Soil physics: a Moroccan perspective  

NASA Astrophysics Data System (ADS)

Research on environmental pollution and degradation of soil and water resources is now of highest priority worldwide. To address these problems, soil physics should be conceived as a central core to this research. This paper objectives are to: (1) address the role and importance of soil physics, (2) demonstrate progress in this discipline, and (3) present various uses of soil physics in research, environment and industry. The study of dynamic processes at and within the soil vadose zone (flow, dispersion, transport, sedimentation, etc.), and ephemeral phenomena (deformation, compaction, etc.), form an area of particular interest in soil physics. Soil physics has changed considerably over time. These changes are due to needed precision in data collection for accurate interpretation of space and time variation of soil properties. Soil physics interacts with other disciplines and sciences such as hydro(geo)logy, agronomy, environment, micro-meteorology, pedology, mathematics, physics, water sciences, etc. These interactions prompted the emergence of advanced theories and comprehensive mechanisms of most natural processes, development of new mathematical tools (modeling and computer simulation, fractals, geostatistics, transformations), creation of high precision instrumentation (computer assisted, less time constraint, increased number of measured parameters) and the scale sharpening of physical measurements which ranges from micro to watershed. The environment industry has contributed to an enlargement of many facets of soil physics. In other words, research demand in soil physics has increased considerably to satisfy specific and environmental problems (contamination of water resources, global warming, etc.). Soil physics research is still at an embryonic stage in Morocco. Consequently, soil physicists can take advantage of developments occurring overseas, and need to build up a database of soil static and dynamic properties and to revise developed models to meet our conditions. Large, but special, investment is required to promote research programs in soil physics, which consider developments in this discipline and respect Moroccan needs. These programs will be highlighted herein.

Lahlou, Sabah; Mrabet, Rachid; Ouadia, Mohamed

2004-06-01

375

Who Needs Philosophy in Physical Education?  

ERIC Educational Resources Information Center

Understanding the invaluable contribution of philosophy in physical education can mean the difference between a "roll out the ball" mentality and one that will change the lives of students forever. What good is an educated mind if it is housed in an unfit body? The more that physical education teachers in training understand the critical role they…

Cavallini, M. Felicia

2008-01-01

376

Summary of basic plasma physics and applications  

Microsoft Academic Search

Is basic plasma physics still alive, and if so, where is it being pursued? Some answers to these questions can be found in the statistics of the papers presented at this conference. The contributed papers were divided into the 13 subject: tokamaks and stellarators; alternate confinement systems; heating and current drive; plasma edge physics; inertial confinement fusion; space plasmas; astrophysical

Francis F. Chen

1995-01-01

377

Mobile system to motivate teenagers' physical activity  

Microsoft Academic Search

This paper reports a mobile persuasive application to motivate teenagers to start and continue being physically active. Being physically active can lead to reduced risks of having weight and cardiovascular problems; however efforts in this direction had variable success. Designing technology that will be engaging and motivating for teenagers requires an understanding of the factors that contribute to behavior adoption

Sonia M. Arteaga; Mo Kudeki; Adrienne Woodworth; Sri Kurniawan

2010-01-01

378

Eight Hundred Years of Physics Teaching.  

ERIC Educational Resources Information Center

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…

Bishop, George

379

Effective Field Theory in Nuclear Physics  

E-print Network

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.

Martin J. Savage; Barry R. Holstein

2000-12-15

380

Women in Physics in Fermi's Time  

Microsoft Academic Search

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

Nina Byers

2003-01-01

381

Physical Education Curriculum Reform in Finland  

ERIC Educational Resources Information Center

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…

Yli-Piipari, Sami

2014-01-01

382

Energy in physics, war and peace  

Microsoft Academic Search

The first part of this volume comprises papers dealing with basic areas of physics ranging from relativistic radiative hydrodynamics through nuclear decay selection rules to stellar X-ray sources and elemental synthesis. The second part presents contributions which address various aspects of physics applied to the creation of military strength, such as the history of nuclear explosives and the development of

L. Wood; H. Mark

1988-01-01

383

The Evolution of the Physical Activity Field  

ERIC Educational Resources Information Center

This article includes an historical review of research on physical activity and health, and how the findings have contributed to physical activity participation and promotion today. In the 20th century, research began to accumulate on the effects of exercise on physiological functions, and later on the relation between regular activity and various…

Blair, Steven N.; Powell, Kenneth E.

2014-01-01

384

Positron Physics  

NASA Technical Reports Server (NTRS)

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.

Drachman, Richard J.

2003-01-01

385

Hypernuclear physics  

SciTech Connect

A brief overview of progress made in the study of hypernuclear physics is presented. The use of ..lambda..-hypernuclei to study properties of conventional (nonstrange) nuclei is explored. Our knowledge of the hyperon-nucleon force is reviewed. Anecdotal examples of interesting hypernuclear phenomena are discussed. The status of ..sigma..-hypernuclei is considered along with a search for the ''H'' dibaryon. 30 refs., 10 figs.

Gibson, B.F.

1987-01-01

386

Youtube Physics  

NASA Astrophysics Data System (ADS)

Through the use of YouTube, we can show our students demos that we do not have the capability of doing in class. We can use these videos to inspire them and show them some of the cutting-edge discoveries in our field. We can also show them videos from around the world. Students need to realize that the physics community is global, not just national. They should learn to marvel in the discoveries made by physicists from all nations.

Riendeau, Diane

2012-02-01

387

Recent Langley helicopter acoustics contributions  

NASA Technical Reports Server (NTRS)

The helicopter acoustics program at NASA Langley has included technology for elements of noise control ranging from sources of noise to receivers of noise. The scope of Langley contributions for about the last decade is discussed. Specifically, the resolution of two certification noise quantification issues by subjective acoustics research, the development status of the helicopter system noise prediction program ROTONET are reviewed and the highlights from research on blade rotational, broadband, and blade vortex interaction noise sources are presented. Finally, research contributions on helicopter cabin (or interior) noise control are presented. A bibliography of publications from the Langley helicopter acoustics program for the past 10 years is included.

Morgan, Homer G.; Pao, S. P.; Powell, C. A.

1988-01-01

388

Contributions to anelasticity in langasite and langatatea)  

NASA Astrophysics Data System (ADS)

Maximization of the quality factors Q of langasite (LGS) and langatate (LGT) is necessary for optimal performance of acoustic resonators of these materials in frequency-control and high-temperature sensing applications. In this report, measurements and least-squares analysis of Q-1 as a function of ultrasonic frequency and temperature of undoped LGS (100 K to 750 K) and LGT (300 K to 760 K) reveal a superposition of physical effects, including point-defect relaxations and intrinsic phonon-phonon loss. In LGS, these effects are superimposed on a large temperature-dependent background with weak frequency dependence that is interpreted as arising from a relaxation process with a distribution of activation energies. This distributed relaxation is suggested to be a result of anelastic kink migration. No evidence for a significant background of this form is found in the LGT specimen, consistent with the lower measured dislocation etch-pit density of this crystal. The analysis of the dependence of Q-1 of LGT on frequency and temperature indicates that, at near-ambient temperatures, the damping in this specimen is close to the intrinsic limit determined by phonon-phonon interactions. Piezoelectric/carrier relaxation, which must occur at sufficiently elevated temperatures, is found not to be a significant contribution to Q-1, relative to defect-related contributions, in either LGS or LGT in the measured range of temperatures.

Johnson, Ward L.; Kim, Sudook A.; Uda, Satoshi; Rivenbark, Christine F.

2011-12-01

389

5 CFR 1600.20 - Types of employee contributions.  

...Types of employee contributions. (a) Traditional contributions. A participant may make traditional contributions. (b) Roth contributions...contributions in addition to or in lieu of traditional contributions. (c)...

2014-01-01

390

5 CFR 1600.20 - Types of employee contributions.  

Code of Federal Regulations, 2013 CFR

...Types of employee contributions. (a) Traditional contributions. A participant may make traditional contributions. (b) Roth contributions...contributions in addition to or in lieu of traditional contributions. (c)...

2013-01-01

391

Rock mechanics contributions from defense programs  

SciTech Connect

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.

Heuze, F.E.

1992-02-01

392

Physical Activity for Everyone  

MedlinePLUS

... Physical Activity Physical Activity Share Compartir How much physical activity do you need? Regular physical activity helps improve ... activities each week. It's easier than you think! Physical Activity Guidelines Children 6 to 17* years of age ...

393

Solar Physics - Plasma Physics Workshop  

NASA Technical Reports Server (NTRS)

A summary of the proceedings of a conference whose purpose was to explore plasma physics problems which arise in the study of solar physics is provided. Sessions were concerned with specific questions including the following: (1) whether the solar plasma is thermal or non-themal; (2) what spectroscopic data is required; (3) what types of magnetic field structures exist; (4) whether magnetohydrodynamic instabilities occur; (5) whether resistive or non-magnetohydrodynamic instabilities occur; (6) what mechanisms of particle acceleration have been proposed; and (7) what information is available concerning shock waves. Very few questions were answered categorically but, for each question, there was discussion concerning the observational evidence, theoretical analyses, and existing or potential laboratory and numerical experiments.

Baum, P. J.; Beckers, J. M.; Newman, C. E.; Priest, E. R.; Rosenberg, H.; Smith, D. F.; Sturrock, P. A.; Wentzel, D. G.

1974-01-01

394

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

E-print Network

have also changed, due to an increasing number of children which suffer from reduced efficiency of some organ or functionality who attend general education schools. Children with intellectual or physical disabilities or with intelligence below average, with defects or injuries of analysers (hearing and sight

Spagnolo, Filippo

395

Étude des détecteurs planaires pixels durcis aux radiations pour la mise à jour du détecteur de vertex d'ATLAS  

Microsoft Academic Search

In this work, is presented a study, using TCAD simulation, of the possible methods of designing of a planar pixel sensors by reducing their inactive area and improving their radiation hardness for use in the Insertable B-Layer (IBL) project and for SLHC upgrade phase for the ATLAS experiment. Different physical models available have been studied to develop a coherent model

Mathieu Benoit; A Lounis

2011-01-01

396

8, 91399165, 2008 Contributions to  

E-print Network

. Title Page Abstract Introduction Conclusions References Tables Figures Back Close Full Screen / Esc Back Close Full Screen / Esc Printer-friendly Version Interactive Discussion Abstract Regional ozone contribution15 in summer led to disappearance of the spring ozone maximum phenomenon at SDZ under winds other

Paris-Sud XI, Université de

397

ORIGINAL CONTRIBUTION Medicine Residents' Understanding  

E-print Network

HYSICIANS MUST KEEP CURRENT with clinical information to practice evidence-based medi- cine (EBM). In doing so, most prefer to seek evidence-based summa- ries, which give the clinical bottom line,1 or evidence-basedORIGINAL CONTRIBUTION Medicine Residents' Understanding of the Biostatistics and Results

Heubach, Silvia

398

Lean distribution: concepts, contributions, conflicts  

Microsoft Academic Search

Despite the fact that the benefits of lean production have been documented across many industry settings, firms find it difficult to extend lean principles downstream into their distribution systems. In this paper we review and synthesize previous contributions on lean principles towards defining a framework of lean distribution. Furthermore, based on an in-depth case study of a vehicle manufacturer's efforts

Andreas Reichhart; Matthias Holweg

2007-01-01

399

ORIGINAL CONTRIBUTION Scan for Author  

E-print Network

preferpsychotherapytoantidepressant medication.5 Whenreferredforpsycho- therapy,however,onlyasmallpercent- ageofpatientsfollowthroughORIGINAL CONTRIBUTION Scan for Author Video InterviewEffect of Telephone-Administered vs Face-to-face Cognitive Behavioral Therapy on Adherence to Therapy and Depression Outcomes Among Primary Care Patients

Chisholm, Rex L.

400

LA CONTRIBUTION AFRICAINE AU DVELOPPEMENT  

E-print Network

;La contribution africaine 410 au d�veloppement (2009-10) 40 R.D.U.S. de la justice p committed during armed conflicts or by dictatorships and other oppressive political regimes. Traditionally in the administration of justice, these processes would be complementary to the traditional justice system

Spino, Claude

401

SHORTER CONTRIBUTIONS. ARITHMETIC BY SMELL.  

E-print Network

SHORTER CONTRIBUTIONS. ARITHMETIC BY SMELL. BY FRANCIS GALTON, F.R.S., London. It seems worth while, in order to assure myself that arithmetic may be per- formed by the sole medium of imaginary smells, just of their fresh brains. I did not attempt multiplication by smell. Subtraction succeeded as well as addition. I

Inglis, Matthew

402

Maximizing Pharmacy's Contribution to Society.  

ERIC Educational Resources Information Center

It is argued that the role of colleges in the effort to maximize pharmacy's contribution to society requires an emphasis on research in the pharmaceutical sciences, in the clinical use of drugs, and in the socioeconomic aspects of drug therapy. This will produce more qualified pharmacists and greater credibility for the profession. (JMD)

Marston, Robert Q.

1978-01-01

403

Racetrack physics  

NASA Astrophysics Data System (ADS)

This article makes plausible assumptions to physically model the 1973 Kentucky Derby, won by the legendary U.S. turf champion Secretariat. A kinematics condition is prescribed to model the start-up of the race, leading to typical estimates of the exertion forces involved at start-up. Other dynamical factors involving racing around the turns, as well as drag effects and the advantage of cover in racing, are examined. Velocity-time graphs are given that can be used by teachers to illustrate their effectiveness to students.

Putt, Graeme D.

2001-01-01

404

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.

405

Physics Animations  

NSDL National Science Digital Library

If you would like a taste of classical mechanics in an animated form, this website is right up your alley. This site from the physics department at the University of Toronto offers up over 100 helpful animations that cover quantum mechanics, vectors, waves, relativity, and optics. Visitors can scroll through the topical headings to look for items of interest and should note the entire website is searchable as well. There are some great topical animations here, such as one on fluid mechanics that involves a theoretical dropping of a ball from the CN Tower in Toronto. Animations have also been translated into Catalan, Spanish, and Basque.

406

SYLLABUS: PHYSICS 8120 PLASMA PHYSICS SPRING 2005  

E-print Network

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

Wiita, Paul J.

407

Physics and Astronomy Radiation Safety Physics Concentration  

E-print Network

Physics and Astronomy Radiation Safety Physics Concentration Strongly recommended courses Credits Environucleonics Lab 1 PHY 3211 Modern Physics II 3 PHY 3230 Thermal Physics 3 PHY 4330 Digital Electronics 3 PHY 4820 Medical Physics 3 CHE 1101 Intro. Chemistry I 3 CHE 1110 Intro. Chemistry I Lab 1 CHE 1102 Intro

Thaxton, Christopher S.

408

Physics and Astronomy Engineering/Physics Concentration  

E-print Network

Physics and Astronomy Engineering/Physics Concentration Strongly recommended courses Credits Term Electromagnetic Fields & Waves 3 PHY 3230 Thermal Physics 3 PHY 4020 Computational Methods in Physics.) taken Grade PHY 4620 Optics 4 PHY 3211 Modern Physics II 3 PHY 4730 Analog Circuits 3 PHY 4640 Quantum

Thaxton, Christopher S.

409

Department of Physics Department of Physics  

E-print Network

Department of Physics Department of Physics Life Sciences Building 3101 S. Dearborn St. Chicago, IL 60616 312.567.3480 www.iit.edu/csl/physics Chair: Grant Bunder The Department of Physics offers B.S., M.S., and Ph.D. degrees in physics. Within the department, there are many opportunities for interdisciplinary

Heller, Barbara

410

PHYSICS OF BURNING PHYSICS INACCESSIBLE TO  

E-print Network

PHYSICS OF BURNING PLASMAS: PHYSICS INACCESSIBLE TO PRESENT FACILITIES FIRE Physics Workshop May 2000 F. Perkins and N. Sauthoff Princeton Plasma Physics Laboratory FIRE Workshop 1 May 2000 #12;OUTLINE · Introduction · Three Classes of Burning Plasma Physics inaccessable to contemporary tokamak

411

314 Department of Physics Department of Physics  

E-print Network

314 Department of Physics Department of Physics Physics, one of the basic sciences, has its origin led to the detailed understanding of a remarkable variety of physical phenomena. Our knowledge now comprehension of the physical world forms an impressive part of the intellectual and cultural heritage of our

Nagle, John F.

412

Department of Physics Department of Physics  

E-print Network

Department of Physics Department of Physics Life Sciences Building 3101 S. Dearborn St. Chicago, IL 60616 312.567.3480 www.iit.edu/csl/physics Chair: Christopher White The Department of Physics offers B.S., M.S., and Ph.D. degrees in physics. Within the department, there are many opportunities

Heller, Barbara

413

Nuclear Physics of Neutron Stars  

E-print Network

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.

J. Piekarewicz

2009-01-28

414

L'evolution des obstacles aux echanges et les entreprises canadiennes : survie et disparition apres l'Accord de libre-echange entre le Canada et les Etats-Unis  

Microsoft Academic Search

Ce document permet d'examiner les consequences de l'evolution des obstacles aux echanges sur la survie des entreprises manufacturieres au Canada. Nous avons elabore un modele de Cournot a marches segmentes pour decrire les effets de la liberalisation des echanges sur des entreprises heterogenes exploitees dans diverses branches d'activite. Nous testons les previsions de ce modele empiriquement a l'aide de donnees

Jennifer Baggs

2004-01-01

415

Cdric Audebert & Andr Calmont (2007) Immigration antillaise et diversit sociale de la population noire aux Etats-Unis , in Andr Calmont et Cdric Audebert (dir.) Dynamiques migratoires de la Carabe,  

E-print Network

Cédric Audebert & André Calmont (2007) « Immigration antillaise et diversité sociale de la Caraïbe, Paris : Géode /Karthala, pp. 77-92. (Terres d'Amérique) 1 Immigration antillaise et diversité croissante de l'immigration contemporaine aux �tats-Unis constitue un défi pour une société organisée sur la

Boyer, Edmond

416

Department Of Physics And  

E-print Network

of Medical Imaging and Technology - The Physics of Music - Physics of Materials - Physics with LabviewOur Physics Courses. The Department Of Physics And Astronomy. #12;CONTENTS Courses How we teach 4 Physics courses 6 Astrophysics courses 8 Specialist physics courses 10 What our graduates do 22 Stories

Crowther, Paul

417

January 2010 Physics 3300  

E-print Network

1 January 2010 Physics 3300 Introduction to Physical Oceanography Instructor: Brad de Young Physics and Physical Oceanography Memorial University, bdeyoung@mun.ca Room C-3000 737-8738 Physics 3300 Introduction to Physical Oceanography deals with the physics of the processes in the ocean, providing an integrating view

deYoung, Brad

418

Physical Properties  

NSDL National Science Digital Library

In several of the previous chapters we have talked about the strength of polymers and pointed out some of the unusual properties that make them both interesting and extremely useful materials. Now it is time to understand some of the fundamental reasons for this behavior. We will examine the structure of polymers a bit more carefully so that we can better understand their physical and mechanical properties and discover why plastics such as HDPE (high-density polyethylene), PS (polystyrene), and Kevlar are so different from each other. In this case, the "structure" on which we will focus is the morphology of the sample. We will see that polymers characteristically have amorphous and/or crystalline morphologies.

Teegarden, David

2004-01-01

419

Physical Fitness and Adapted Physical Education.  

ERIC Educational Resources Information Center

The author contends that physical fitness through adapted physical education allows handicapped students to successfully participate in sports and independent recreational activities in the community. (SB)

Auxter, David

1982-01-01

420

Physical Oceanography (Program Description)  

NSF Publications Database

... of Ocean Sciences Physical Oceanography Description The Physical Oceanography Program supports ... various quantities, with the way the ocean's physical structure interacts with the biological and ...

421

The Physics Video Demonstration Database  

NSDL National Science Digital Library

This web site contains a database of a wide range of short videos demonstrating physics concepts. The videos can be used during lecture by instructors, by students for coursework outside lecture, and for students to review demonstrations after class. The database can be browsed by topic or searched by keyword. Those with videos they may wish to contribute can contact the creator of the web site.

Liepe, Mattias

2008-09-17

422

Physics of Forced Unsteady Separation  

NASA Technical Reports Server (NTRS)

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.

Carr, Lawrence W. (editor)

1992-01-01

423

Tau lepton physics at LEP  

E-print Network

The talk covers three contributions on (i) the final measurement of branching ratios and spectral functions of t decays using the full LEP-I data from ALEPH, (ii) a preliminary measurement of the t hadronic branching ratios from DELPHI and (iii) a measurement of the strange spectral function in hadronic t decays from OPAL. These measurements are discussed and the relevant physics topics are briefly reviewed.

Z. Zhang; the ALEPH; DELPHI; OPAL Collaboration

2006-02-24

424

The Other Hall Effect: College Board Physics  

NASA Astrophysics Data System (ADS)

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.

Sheppard, Keith; Gunning, Amanda M.

2013-09-01

425

Profile report Chair in Device Physics of Complex Materials: Oxides Version 2012-11-05 1  

E-print Network

report: Device Physics of Complex Materials: Oxides Discipline: Physics (Applied Physics) Level: Full/Associate professor Fte: 1.0 1. Discipline/ In general Device physics contributes to our present knowledge of emergent in device physics involving novel functional materials; a concomitant position is opened in the field

426

Motor Contributions to the Perception of Relative Phase  

PubMed Central

The extent to which different stimulus elements move together, namely their relative phase, is a central visual feature of many social and physical systems; characterizing everything from the oscillations of a walker’s limbs to the alternating lights at pedestrian crossings. The experiments described here provide the first evidence of a motor contribution to the representation of relative phase. Using an interference paradigm, we demonstrate that a motor load dramatically impairs discrimination of relative phase. Comparable interference effects were observed for biological and mechanical stimuli, indicative of a domain-general mechanism. In addition, we show that the same motor load has little effect on a similar static-angle matching task, and that an auditory rhythmic load did not interfere with phase discriminations in the same way as the motor load. These results suggest that the motor system contributes to the perception of relative phase; information crucial for interpreting our social and physical environments. PMID:24999611

2014-01-01

427

Exercise Counseling--How Physical Educators Can Help.  

ERIC Educational Resources Information Center

To teach students to maintain active lifestyles, physical educators must know what motivates students to exercise. The article discusses factors contributing to youth inactivity, what physical educators can do about the problem, and what research says about exercise motivation and adherence. Six recommendations for physical educators are included.…

Douthitt, Vicki L.; Harvey, Mark L.

1995-01-01

428

Adolescent Physical Abuse and Risk for Suicidal Behaviors  

Microsoft Academic Search

The present study assessed the contribution of physical abuse to increased risk for suicidal behaviors in physically abused adolescents compared with nonabused adolescents. Suicidal thoughts and behaviors were assessed using the Suicide Probability Scale. Physically abused adolescents had higher mean scores on the Hopelessness, Negative Self-Evaluation, Hostility, and Suicide Ideation subscales. Significant predictors of subscale and overall scores included parent

SANDRA J. KAPLAN; DAVID PELCOVITZ; SUZANNE SALZINGER; FRANCINE MANDEL; MERRILL WEINER; VICTOR LABRUNA

1999-01-01

429

Coauthorship in Physics  

NASA Astrophysics Data System (ADS)

In a large and detailed survey on the ethics of scientific coauthorship, members of the American Physical Society (APS) were asked to judge the number of appropriate coauthors on his or her last published paper. Results show that the first or second coauthor are more appropriate than later coauthors about whom there is equal and considerable doubt. The probability of any third and subsequent coathors being judged as inappropriate is 23% for the APS guideline, 67% for the tighter guideline of the International Committee of Medical Journal Editors, 59% if the guideline requires "direct contributions to scientific discovery or invention". Only 3% of respondents report having personally rejected an undeserving scientist who expected to be an author on the last published paper. Respondents seem to be divided into two non-overlapping populations - those who report no inappropriate coauthorship and those who have a more graduated view.

Tarnow, Eugen

2002-06-01

430

Physics and Society: A sub-discipline of Physics  

NASA Astrophysics Data System (ADS)

The Forum on Physics and Society was born in the tumultuous 1960's and 70's and has a long record of accomplishments over the past 40 years. *303 APS session in 40 years, an average of 7.7/year. *10 Books (3 Forum Studies, 7 AIP Conf. Proceedings, 4 booklets). *Physics and Society has published results that have been widely referenced. *2 Forum Board Members became U.S. Congressmen [V. Ehlers (R-MI), R. Holt (D-NJ)], others have had notable public service careers. *Szilard and Burton-Forum Awards recognize positive contributions of physicists in society. *The Forum helped establish the Congressional Science Fellowships. This talk will update the 1999 Forum History (http://www.aps.org/units/fps/history.cfm) and provide anecdotal humor. Lastly, back-of-the-envelope calculations from my text, Physics of Society Issues: Calculations on National Security, Environment and Energy (Springer, 2007), will be provided.

Hafemeister, David

2012-03-01

431

Parenting during toddlerhood: Contributions of parental, contextual, and child characteristics  

Microsoft Academic Search

The present study examines the contribution of parental, contextual, and child characteristics to parenting behavior during toddlerhood in 111 two-parent families with a 17-month-old son (M = 16.9 months, SD = 0.57). Parenting was conceptualized in terms of five dimensions: support, structure, positive discipline, psychological control, and physical punishment. In general, results indicate that the effects of parental, contextual, and

M. Verhoeven; M. Junger; Aken van C; M. Dekovi?; Aken van M. A. G

2007-01-01

432

CFD contributions to high-speed shock-related problems  

Microsoft Academic Search

Computational Fluid Dynamics (CFD) have extensively contributed to high-speed shock-wave shock wave research. With study examples\\u000a by the author’s group in the past, effectiveness of CFD both for design of transportation vehicles and for understanding of\\u000a fluid physics is discussed. Trend of CFD for further use is then discussed based on recent applications and three key features:\\u000a computer progress, spectral-like

K. Fujii

433

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

ERIC Educational Resources Information Center

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…

Li, Li

2012-01-01

434

Activities Contributing to Total Energy Expenditure in the United States: Results from the NHAPS Study  

Microsoft Academic Search

BACKGROUND: Physical activity is increasingly recognized as an important factor influencing health and disease status. Total energy expenditure, both low-intensity and high-intensity, contributes to maintenance of healthy body weight. This paper presents the results of a quantitative approach to determining the activities that contribute to total energy expenditure in the United States. METHODS: Data from the National Human Activity Pattern

Linda Dong; Gladys Block; Shelly Mandel

2004-01-01

435

Biogeochemical cycling of lignocellulosic carbon in marine and freshwater ecosystems: relative contributions of procaryotes and eucaryotes  

Microsoft Academic Search

The relative contributions of procaryotes and eucaryotes to the degradation of the lignin and polysaccharide components of lignocellulosic detritus in two marine and two freshwater wetland ecosystems were determined. Two independent methods - physical separation of bacteria from fungi and other eucaryotes by size fractionation, and antibiotic treatments - were used to estimate procaryotic and eucaryotic contributions to the degradation

RONALD BENNER; MARY ANN MORAN; ROBERT E. HODSON

1986-01-01

436

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

Microsoft Academic Search

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 sport, and help athletes interact with the environment more effectively.

Li Li

2012-01-01

437

Megagauss physics.  

PubMed

Fields greater than 10 MG can be produced by explosive flux compression and fields up to 3 MG with capacitor banks. Measurement of fields up to 10 MG is reliable, but difficulties may be expected at higher fields. Megagauss fields have been applied successfully as high-pressure sources, in high-energy particle physics, and in solid-state investigations. Other uses remain to be exploited: plasma compression by megagauss fields has been relatively unsuccessful but shows promise; their use as particle accelerators has been studied only theoretically; and much work remains to be done, both experimentally and theoretically, in connection with applications of megagauss fields in solidstate physics. Note added in proof: Since this article was prepared, Grigor'ev et al. have carried out some experiments (48) in which they have compressed hydrogen up to a density of 1.95 grams per cubic centimeter with a calculated pressure of 8 x 10(6) atmospheres. They report five different pressure-density points and claim that their data can be explained by assuming that the transition to the metallic phase occurs at a pressure of 2.8 x 10(6) atmospheres, with a density change from 1.08 to 1.3 g/cm(3). Using the flux compression techniques described earlier in this article, Hawke et al. [see (30, 31)] have obtained a pressure-density point at 1.5 x 10(6) atmospheres and 1.0 g/cm(3), which is also not inconsistent with a predicted equation of state of metallic hydrogen (49). In view of the experimental uncertainties, none of the pressure-density data can yet be used conclusively to establish the transition's existence. Hawke and his co-workers are presently engaged in measurements of the electrical conductivity of the compressed hydrogen. Observation of a significant conductivity at the proposed transition pressure would be a more definitive test of a metallic transition. In addition, two lower pressure-density points have been obtained for deuterium by the Los Alamos group, by means of the flux compression methods described earlier in this article. One point agrees to within experimental error with a slight extrapolation of Stewart's data (50). The second point is at a pressure of 65+/- 3 x 10(3) atmospheres with a density of 0.71 +/- 0.10 g/cm(3). The data are tentative, and efforts are under way to obtain more data points at both higher and lower pressures. PMID:17816281

Fowler, C M

1973-04-20

438

NASA contributions to the National Climate Assessment  

NASA Astrophysics Data System (ADS)

NASA observations and models extensively contribute to our knowledge of climate change science, primarily at global scales, but increasingly at regional scales. This knowledge also advances our understanding of the impacts of climate change on natural and social systems, and can inform decisions about adaptation to current and anticipated changes. To enable the use of these scientific advances, NASA has supported the development of the 2013 National Climate Assessment (NCA) report in numerous ways and is also focusing on fostering the science and scientists that underpin a sustained assessment effort. Ultimately, NASA's objective is to contribute to the capacity for sustained assessments by funding the foundational science that underpins the NCA and by supporting the training of scientists who can participate in future assessments. Here, we outline NASA's general approach and strategy for the NCA and highlight several research activities. In 2011, the agency funded 14 projects at NASA research centers, supporting both the near-term 2013 NCA report and the sustained assessment process, to advance assessment science, develop capabilities and products for the assessment, and enhance the development of assessment-enabling tools. These projects include the development of a regional climate model evaluation system, an assessment of how climate has affected recent fire activity in the U.S., and an evaluation of how climate-driven heat events impact public health. Additionally, NASA sponsored two workshops in 2010 and 2011 to establish methodologies to identify physical and societal climate change indicators. Based on these activities and needs identified by the NCA, the agency is supporting the development of climate change indicators via a competitively funded grant opportunity that is open to the entire research community. NASA envisions continuing to leverage the agency's resources and scientific expertise to facilitate future NCAs and enhance the knowledge base that will enable the Nation to respond to climate change.

Leidner, A. K.; Lipschultz, F.; Friedl, L.; Kaye, J. A.

2012-12-01

439

The Viennese contribution to venereology.  

PubMed Central

A history of venereology in Vienna from the first manifestations of the French disease in 1498 until the first half of the twentieth century is described. Notable events were the founding of the old Vienna School by van Swieten in the years after 1745, followed by the revival one hundred years later by von Hebra of the scientific basis for dermatovenereology. An account is given of teachers and discoverers of venereological importance after von Hebra and Sigmund to Arzt. The importance of Landsteiner's and Wagner von Jauregg's contributions finalise the historical account. PMID:336146

Wauch, M

1977-01-01

440

Particle Physics  

NASA Astrophysics Data System (ADS)

Preface; Introduction; Part I. Theoretical Framework: 1. Scale and dimension - From animals to quarks Geoffrey B. West; 2. Particle physics and the standard model Stuart Raby, Richard C. Slansky and Geoffrey B. West; QCD on a Cray: the masses of elementary particles Gerald Guralnik, Tony Warnock and Charles Zemach; Lecture Notes - From simple field theories to the standard model; 3. Toward a unified theory: an essay on the role of supergravity in the search for unification Richard C. Slansky; 4. Supersymmetry at 100 GeV Stuart Raby; 5. The family problem T. Goldman and Michael Martin Nieto; Part II. Experimental Developments: 6. Experiments to test unification schemes Gary H. Sanders; 7. The march toward higher energies S. Peter Rosen; LAMPF II and the High-Intensity Frontier Henry A. Thiessen; The SSC - An engineering challenge Mahlon T. Wilson; 8. Science underground - the search for rare events L. M. Simmons, Jr; Part III. Personal Perspectives: 9. Quarks and quirks among friends Peter A. Carruthers, Stuart Raby, Richard C. Slansky, Geoffrey B. West and George Zweig; Index.

Cooper, Necia Grant; West, Geoffrey B.

1988-06-01

441

Quantum Physics  

NSDL National Science Digital Library

The revered quantum physicist Richard Feynman once quipped, âÂÂI think I can safely say that nobody understands quantum mechanics.â And yet, the study of quantum mechanics has given birth to the laser, the microchip, and the electron microscope. WhatâÂÂs going on here? You can find out by taking Quantum Physics I, a completely free online class from MIT. The Syllabus is a great way to get situated with the course offerings and the Readings section offers links to help purchase the necessary books. When ready, strap yourself into your office chair and launch into the 24 one-hour-long Lecture Videos. DonâÂÂt forget the Lecture Notes (youâÂÂll need those!), as well as Assignments, Exams, and Study Materials. If you have ever longed to understand the Higgs Boson or wondered how a photon can act as either a particle or a wave, this incredible, knowledge packed course from one of the top scientific universities in the world is for you.

Adams, Allan; Evans, Matthew; Zwiebach, Barton

2013-01-01

442

Quantum Physics Einstein's Gravity  

E-print Network

Quantum Physics confronts Einstein's Gravity Matt Visser Physics Department Washington University Saint Louis USA Science Saturdays 13 October 2001 #12; Quantum Physics confronts Einstein's Gravity Abstract: The search for an overall master theory that is compatible both with quantum physics

Visser, Matt

443

Physics Illinois Undergraduate Programs  

E-print Network

Physics Illinois Undergraduate Programs Department of Physics College of Engineering University to undergraduate education. Over the last 15 years, in collaboration with our nationally recognized Physics Education Research Group, our faculty has reinvented the way undergraduate physics courses are taught

Gilbert, Matthew

444

Physics 6321 Coastal oceanography  

E-print Network

Physics 6321 Coastal oceanography · Instructor: Dr. Iakov Afanassiev · Office: Physics C-4065 · email: yakov@physics.mun.ca · Course Times: TBD Room TBD · Office Hours: unlimited · Web Page: http://www.physics

deYoung, Brad

445

Submit your interesting contributions before December 1, 2009 DPG Spring Meeting 2010 approaching  

E-print Network

that use methods from physics to gain a better understanding of socio- economic problems. It is currently to contribute to these sessions: · Financial Markets and Risk Man- agement · Economic Models and Evolution- ary and abstract submis- sion can be done online (Please select SOE: Physics of Socio-Economic Sys- tems Division

Shull, Kenneth R.

446

Can Heavy Ion Storage Rings Contribute to Our Understanding of the Charge State Distributions in  

E-print Network

ionized atomic gas hinges on our understanding the underlying physical processes which produce-Planck-Institute for Nuclear Physics (MPI-K) in Heidelberg, Germany. This work aims to improve our understanding of the chargeCan Heavy Ion Storage Rings Contribute to Our Understanding of the Charge State Distributions

Savin, Daniel Wolf

447

Interaction of the Tobacco Mosaic Virus Replicase Protein with the Aux/IAA Protein PAP1/IAA26 Is Associated with Disease Development†  

PubMed Central

Virus-infected plants often display developmental abnormalities that include stunting, leaf curling, and the loss of apical dominance. In this study, the helicase domain of the Tobacco mosaic virus (TMV) 126- and/or 183-kDa replicase protein(s) was found to interact with the Arabidopsis Aux/IAA protein PAP1 (also named IAA26), a putative regulator of auxin response genes involved in plant development. To investigate the role of this interaction in the display of symptoms, a TMV mutant defective in the PAP1 interaction was identified. This mutant replicated and moved normally in Arabidopsis but induced attenuated developmental symptoms. Additionally, transgenic plants in which the accumulation of PAP1 mRNA was silenced exhibit symptoms like those of virus-infected plants. In uninfected tissues, ectopically expressed PAP1 accumulated and localized to the nucleus. However, in TMV-infected tissues, PAP1 failed to accumulate to significant levels and did not localize to the nucleus, suggesting that interaction with the TMV replicase protein disrupts PAP1 localization. The consequences of this interaction would affect PAP1's putative function as a transcriptional regulator of auxin response genes. This is supported by gene expression data indicating that ?30% of the Arabidopsis genes displaying transcriptional alterations in response to TMV contain multiple auxin response promoter elements. Combined, these data indicate that the TMV replicase protein interferes with the plant's auxin response system to induce specific disease symptoms. PMID:15681455

Padmanabhan, Meenu S.; Goregaoker, Sameer P.; Golem, Sheetal; Shiferaw, Haiymanot; Culver, James N.

2005-01-01

448

Pronounced matrix effect in YbMo2Al4-type Ca(AuxZn2-x)Au4 (x=0.09-0.89)  

NASA Astrophysics Data System (ADS)

Electron-poor polar intermetallics Ca(AuxZn2-x)Au4 have been synthesized through fusion of stoichiometric metals in sealed tantalum tubes at 800 °C and annealing at 400 °C for one week. Single crystal X-ray diffraction analyses reveal that this phase belongs to the YbMo2Al4-type structure (I4/mmm, Pearson symbol tI14), a?6.943-7.017 Å, c?5.278-5.286 Å, Z=2, with homogeneous composition range of x=0.09(1)-0.89(1). The structure exhibits a three-dimensional framework of (Au8)1/2 featuring square and octagonal channels extending in c, in which Ca and the infinite linear chains of [(Au,Zn)2]1/2 are located, respectively. Mulliken population analyses demonstrate that Zn prefers to form the linear chains in the whole homogeneous composition range, consistent with experimental observations. Crystal orbital Hamilton population (COHP) analyses reveal that the channel-to-chain Au-Zn contact has strong bonding interactions regardless of its large interatomic distance (~2.85 Å), a signature of pronounced matrix effect. The last mentioned effect in YbMo2Al4-type structures is expected in case the linear chains are defined by small size atoms.

Mishra, Trinath; Lin, Qisheng; Corbett, John D.

2014-10-01

449

SYLLABUS: PHYSICS 8120 PLASMA PHYSICS FALL 2007  

E-print Network

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

Wiita, Paul J.

450

SYLLABUS: PHYSICS 8120 PLASMA PHYSICS FALL 2007  

E-print Network

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

Wiita, Paul J.

451

Physics 129 Nuclear and Particle Physics  

E-print Network

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

California at Santa Cruz, University of

452

DOCTORAL PROGRAMME MATHEMATICS AND PHYSICS, Subprogramme PHYSICS,  

E-print Network

Engineering module treats nuclear technology, operation, nuclear safety, reactor physics, environmental issues analysis and development of safety culture. Selected chapters on nuclear and reactor physics prof. dr acquires a deeper knowledge of reactor physics and related nuclear physics basics. The student is trained

Â?umer, Slobodan

453

Physics and Astronomy Chemical Physics Concentration  

E-print Network

Physics and Astronomy Chemical Physics Concentration Strongly recommended courses Credits Term Dept Fields & Waves 3 PHY 3230 Thermal Physics 3 PHY 4640 Quantum Mechanics 3 PHY 4020 Computational Methods in Physics & Engineering 3 PHY 4330 Digital Electronics 3 CHE 1101 Intro. Chemistry I 3 CHE 1110 Intro

Thaxton, Christopher S.

454

Physics Procedia 00 (2013) 16 Physics Procedia  

E-print Network

Physics Procedia 00 (2013) 1­6 Physics Procedia Educating the next generation of Computational Physicists Joan Adler Physics Department, Technion -IIT, Haifa, Israel, 32000 Abstract Many "senior" Computational Physics researchers began their careers perched on of the other vertices of the Landau triangle

Adler, Joan

455

Physics Procedia 00 (2013) 15 Physics Procedia  

E-print Network

Physics Procedia 00 (2013) 1­5 Physics Procedia Educating the next generation of Computational Physicists Joan Adler Physics Department, Technion -IIT, Haifa, Israel, 32000 Abstract Many "senior" Computational Physics researchers began their careers perched on of the other vertices of the Landau triangle

Adler, Joan

456

Physical Plant Strategic Plan 2012 PHYSICAL PLANT  

E-print Network

;Physical Plant Strategic Plan ­ 2012 2 GOALS, CRITICAL SUCCESS FACTORS, and OBJECTIVES (includingPhysical Plant Strategic Plan ­ 2012 1 PHYSICAL PLANT 2012 STRATEGIC PLAN Strategic Planning and Assessment Reports MISSION STATEMENT The Physical Plant provides building and service environments conducive

Gelfond, Michael

457

Physical Plant Strategic Plan 2010 PHYSICAL PLANT  

E-print Network

;Physical Plant Strategic Plan ­ 2010 2 GOALS, CRITICAL SUCCESS FACTORS, and OBJECTIVES (includingPhysical 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

Westfall, Peter H.

458

Strangeness Contribution to the Proton Spin from Lattice QCD  

E-print Network

We compute the strangeness and light-quark contributions Delta s, Delta u and Delta d to the proton spin in nf=2 lattice QCD at a pion mass of about 285 MeV and at a lattice spacing a approx 0.073 fm, using the non-perturbatively improved Sheikholeslami-Wohlert Wilson action. We carry out the renormalization of these matrix elements which involves mixing between contributions from different quark flavours. Our main result is the small negative value MSbar scheme value Delta s = -0.020(10)(4), at a scale mu = 7.4 GeV, of the strangeness contribution to the nucleon spin. The second error is an estimate of the uncertainty, due to the missing extrapolation to the physical point.

Gunnar S. Bali; Sara Collins; Meinulf Gockeler; Roger Horsley; Yoshifumi Nakamura; Andrea Nobile; Dirk Pleiter; P. E. L. Rakow; Andreas Schafer; Gerrit Schierholz; James M. Zanotti

2011-12-14

459

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

va s’agir d’accomplir les Disjonctions du Sams-âra-Nirvâna extérieures et intérieures (phyi nang ‘khor ‘das ru shanphye ba) ; — pour la parole (ngag), il faut s’exercer à l’apposition des sceaux (rgyasgdab), à l’entraînement dynamique (rtsal sbyang... respiration et de rétention de l’air que l’adepte accom-plit en adoptant la posture en cinq sceaux (phyag rgya lnga). sByong rtogs spar gsum — La purification, la réalisation etl’intensification1. la purification (sbyong, sbyang) des aspects impurs tels que...

Achard, Jean-Luc

2003-01-01

460

American Physical Society  

NSDL National Science Digital Library

The American Physical Society is an organization of more than 41,000 physicists worldwide. It is dedicated to the advancement and diffusion of the knowledge of physics. The APS publishes some of the world's leading physics research journals: the Physical Review series, Physical Review Letters, and Reviews of Modern Physics.

2003-10-10

461

Elections with Contribution-Maximizing Candidates  

Microsoft Academic Search

Much of the analysis of campaign contributions, in accordance with the Downsian model, has supposed that candidates seek contributions for electoral purposes. This paper takes the opposite approach, by assuming that each candidate aims to maximize the contributions he collects. We let a citizen contribute to a candidate with the aim of increasing that candidate's chances of winning. These assumptions

Mark Gradstein

2001-01-01

462

Interest groups, campaign contributions, and probabilistic voting  

Microsoft Academic Search

This essay develops a simple model to analyze the impact of campaign contributions on electoral-policy decisions of candidates for office. Interest groups here are firms that select contributions under the assumption that candidates' policies and opposing groups' donations remain unaltered. Candidates, however, recognize that their policy choices affect contributions. Campaign contributions are used by candidates to affect policy-oriented voters' perceptions

David Austen-Smith

1987-01-01

463

HIPPOCAMPAL CONTRIBUTIONS TO THE PROCESSING OF SOCIAL EMOTIONS  

PubMed Central

Inducing and experiencing emotions about others’ mental and physical circumstances is thought to involve self-relevant processing and personal memories of similar experiences. The hippocampus is important for self-referential processing during recall and prospection; however, its contributions during social emotions have not been systematically investigated. We use event-related averaging and Granger causal connectivity mapping to investigate hippocampal contributions during the processing of varieties of admiration and compassion pertaining to protagonists’ mental versus physical circumstances (admiration for virtue, AV, versus for skill; compassion for social/psychological pain, CSP, versus for physical pain). Data were collected using a multistep emotion induction paradigm that included psychosocial interviews, BOLD fMRI and simultaneous psychophysiological recording. Given that mnemonic demands were equivalent among conditions, we tested whether: (1) the hippocampi would be recruited more strongly and for a longer duration during the processing of AV and CSP; (2) connectivity between the hippocampi and cortical systems involved in visceral somatosensation/emotional feeling, social cognitive, and self-related processing would be more extensive during AV and CSP. Results elucidate the hippocampus’ facilitative role in inducing and sustaining appropriate emotional reactions, the importance of self-related processing during social emotions, and corroborate the conception that varieties of emotional processing pertaining to others’ mental and physical situations engage at least partially distinct neural mechanisms. PMID:22012639

Immordino-Yang, Mary Helen; Singh, Vanessa

2012-01-01

464

Contribution from pressure-sensitive adhesives  

NASA Astrophysics Data System (ADS)

The successful use of many security papers, foils and films depends on the technology of chemical fastening systems -- especially pressure sensitive adhesives. These are adhesives activated not by heat or by the evaporation of water or some other solvent, but simply by the act of application -- by pressure. These adhesives provide the means whereby laminations, substrates and seals are made effective. In addition to their physical properties these adhesives are often required to possess optical properties to allow the security materials to be visibly active and indeed the adhesive system may itself contribute as a carrier for a variety of security materials. Recent advances in adhesives chemistry have made it possible to achieve virtually all the required physical performance characteristics combined with a choice of optical properties ranging from total opacity to invisibility and including controlled translucency and tinting. The implications for security printing and packaging are important. Opacity is easy to achieve, for example by loading the adhesive with aluminum powder, by the selection of totally opaque materials like metallized film or by various printing processes. But achieving transparency is a different matter, and transparency is mandatory for applications involving the protection of documents, photographs, etc. with a clear film over-laminate. Obvious examples would be for passports, visas and other personal identification. But some security devices may themselves require protection; for example holograms or embossings. And transparency in the test laboratory is not enough. The Australian driving licence is stuck to the windshield, so the transparency of the adhesive must be sustained over long periods without deterioration due to prolonged u/v exposure, climatic conditions or aging. The commercial label market has helped to push the technology forward. There is a strong demand for the 'no-label look' for packaging of clear plastic and glass containers where the content can be easily seen without interference and where wording or symbols can be read through the container. You see this increasingly with pharmaceuticals, cosmetics and toiletries, even bottled beer. Achieving transparency is one thing but this property must be combined with all the physical properties required of the pressure sensitive adhesive. First there is the question of permanence, re-positionability and removability and the degree to which these features are required. Secondly many complications arise from the range of materials to which the adhesive must be anchored and the range to which it will be applied and must bond. Obviously these surfaces vary from those with the highest surface energy (polycarbonate for example) to those apolar surfaces engineered for minimum attraction (PTFE -- 'Teflon' for example).

Cunningham, Gilbert

1996-03-01

465

Michael Faraday and his contribution to anesthesia.  

PubMed

Michael Faraday (1791-1867) was a protégé of Humphry Davy. He became one of Davy's successors as Professor of Chemistry at the Royal Institution of Great Britain. Of Faraday's many brilliant discoveries in chemistry and physics, probably the best remembered today is his work on electromagnetic induction. Faraday's contribution to introduction of anesthesia was his published announcement in 1818 that inhalation of the vapor of ether produced the same effects on mentation and consciousness as the breathing of nitrous oxide. He most likely became familiar with the central nervous system effects of nitrous oxide through his association with Davy, an avid user of the gas. Sulfuric ether was a common, convenient, cheap, and easily available substance, in contrast to nitrous oxide, which required expensive, cumbersome, and probably not widely available apparatus for its production and administration. The capability for inhaling intoxicating vapors eventually became commonly available with the use of ether instead of the gas. The first surgical anesthetics were a consequence of the resulting student "ether frolics." The 1818 announcement on breathing ether vapor was published anonymously; however, notations in Faraday's handwriting in some of his personal books clearly establish Michael Faraday as the author of this brief communication. PMID:1416178

Bergman, N A

1992-10-01

466

Nuclear Physics --- at the frontiers of knowledge  

E-print Network

(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.

Herman Feshbach

1995-10-10

467

NPOESS Contributions to Climate Observations  

NASA Astrophysics Data System (ADS)

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).

Day, D. W.; Mussetto, M.

2009-12-01

468

Possible NASA Contributions to HEAT  

NASA Technical Reports Server (NTRS)

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.

Shepherd, J. M.

2004-01-01

469

Indirect constraints on New Physics from the B-factories  

E-print Network

The existence of New Physics particles can be probed by performing precision measurements of physics phenomena at the few GeV energy scale. The decays of B and D mesons are an excellent example of relatively low energy phenomena that can be sensitive to New Physics scales at the TeV region or above. In this contribution, some recent results obtained by the BABAR and Belle Collaborations are presented, and their implications for the indirect searches for New Physics are discussed.

A. Gaz; for the BaBar; Belle Collaborations

2014-11-07

470

Z Physics Constraints on Vector Leptoquarks  

E-print Network

We analyze the constraints on vector leptoquarks coming from radiative corrections to $Z$ physics. We perform a global fitting to the LEP data including the oblique and non-universal contributions of the most general effective Lagrangian for vector leptoquarks, which exhibits the $SU(2)_L \\times U(1)_Y$ gauge invariance. We show that the $Z$ physics leads to stronger bounds on second and third generation vectors leptoquarks than the ones obtained from low energy and the current collider experiments.

O. J. P. Eboli; M. C. Gonzalez-Garcia; J. K. Mizukoshi

1996-12-04

471

Personality and physical health: an introduction.  

PubMed

This article provides a rationale for research on personality as a contributing factor in the development of physical disease. A brief history of major developments from the 1930s to the present is then provided. Special attention is given to shifts in conception regarding whether particular dispositions are related to specific physical disorders or whether these dispositions increase general illness susceptibility. The paper ends with a brief orientation to the other papers and commentaries in this special issue. PMID:3612468

Suls, J; Rittenhouse, J D

1987-06-01

472

Introductory physics in biological context: An approach to improve introductory physics for life science students  

NASA Astrophysics Data System (ADS)

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.

Crouch, Catherine H.; Heller, Kenneth

2014-05-01

473

BOOK REVIEW: Complete Physics  

NASA Astrophysics Data System (ADS)

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

Carson, Simon

2000-03-01

474

Genetic contributions to agricultural sustainability.  

PubMed

The current tools of enquiry into the structure and operation of the plant genome have provided us with an understanding of plant development and function far beyond the state of knowledge that we had previously. We know about key genetic controls repressing or stimulating the cascades of gene expression that move a plant through stages in its life cycle, facilitating the morphogenesis of vegetative and reproductive tissues and organs. The new technologies are enabling the identification of key gene activity responses to the range of biotic and abiotic challenges experienced by plants. In the past, plant breeders produced new varieties with changes in the phases of development, modifications of plant architecture and improved levels of tolerance and resistance to environmental and biotic challenges by identifying the required phenotypes in a few plants among the large numbers of plants in a breeding population. Now our increased knowledge and powerful gene sequence-based diagnostics provide plant breeders with more precise selection objectives and assays to operate in rationally planned crop improvement programmes. We can expect yield potential to increase and harvested product quality portfolios to better fit an increasing diversity of market requirements. The new genetics will connect agriculture to sectors beyond the food, feed and fibre industries; agri-business will contribute to public health and will provide high-value products to the pharmaceutical industry as well as to industries previously based on petroleum feedstocks and chemical modification processes. PMID:17656342

Dennis, Elizabeth S; Ellis, Jeffrey; Green, Allan; Llewellyn, Danny; Morell, Matthew; Tabe, Linda; Peacock, W J

2008-02-12

475

Physics Virtual Bookshelf  

NSDL National Science Digital Library

The Physics Virtual Bookshelf is a collection of documents written by professors as class notes or physics education research. This collection includes content on classical physics, computational physics, data analysis, modern physics, relativity, quantum mechanics, and pedagogy. The collection is organized by topic and easily browsed. The site is viewable as a standard Web page (default) or in Adobe Flash format.

Harrison, David M.

2009-06-18

476

Physics News in 1983.  

ERIC Educational Resources Information Center

Information is provided on some of the interesting and newsworthy developments in physics and its related fields during 1983. Areas considered include: (1) acoustics; (2) astrophysics; (3) condensed matter physics; (4) crystallography; (5) physics education; (6) electron and atomic physics; (7) elementary particle physics; (8) fluid dynamics; (9)…

Schewe, Phillip F., Ed.

477

Of Physics & September 09  

E-print Network

and may usefully help physics/medical physics students with module choices. Assessment and Examination1 Department Of Physics & Astronomy. MEDICAL PHYSICS 2009-2010 September 09 #12;2 1. Overview Two programmes of study are offered jointly by the Department of Physics and Astronomy and the Department

Crowther, Paul

478

Physics First? Survey First!  

ERIC Educational Resources Information Center

The idea of teaching physics to ninth-graders, known as "Physics First," has become more and more popular among physics educators in this country. However, introducing ninth-grade physics has been an uphill battle; such a change has a major impact on the students, parents, teachers, and the school administration. Switching to Physics First affects…

Korsunsky, Boris; Agar, Ozymandias

2008-01-01

479

Physics First? Survey First!  

Microsoft Academic Search

The idea of teaching physics to ninth-graders, known as ``Physics First,'' has become more and more popular among physics educators in this country. However, introducing ninth-grade physics has been an uphill battle; such a change has a major impact on the students, parents, teachers, and the school administration. Switching to Physics First affects the entire science (and possibly mathematics) curriculum.

Boris Korsunsky; Ozymandias Agar

2008-01-01

480

Physics Resources for Teachers  

E-print Network

Physics Resources for Teachers University of Wisconsin ­ Madison Department of Physics 1150 University Ave. Madison, WI 53706 wonders@physics.wisc.edu (608) 262-2927 Plasma Physics Web Resources Center Plasma Physics Lab http://science-education.pppl.gov/ Coalition for Plasma Science http

Collar, Juan I.

481

General Syllabus Physics 45100  

E-print Network

General Syllabus Physics 45100 Thermodynamics and Statistical Physics Designation: Undergraduate Catalog description: 45100: Thermodynamics and Statistical Physics Temperature; equation of state; work and statistical mechanics; low-temperature physics; the Third Law. 3 HR./Wk.; 3 CR. Prerequisites: Physics 35100

Lombardi, John R.

482

B Physics (Experiment)  

E-print Network

In past few years the flavor physics made important transition from the work on confirmation the standard model of particle physics to the phase of search for effects of a new physics beyond standard model. In this paper we review current state of the physics of b-hadrons with emphasis on results with a sensitivity to new physics.

Michal Kreps

2010-08-02

483

Physics Virtual Bookshelf  

NSDL National Science Digital Library

The Physics Virtual Bookshelf is a collection of documents written by professors as class notes or physics education research. This collection includes content on classical physics, computational physics, data analysis, modern physics, relativity, quantum mechanics, and pedagogy. The collection is organized by topic and easily browsed.

Bailey, David; Key, Anthony W.; Logan, Robert K.; Drummond, James R.; Sinervo, Pekka K.; Orr, Robert S.

2005-10-24

484

Vietnamese women love physics  

NASA Astrophysics Data System (ADS)

More and more females are studying physics and applying their physics knowledge in Vietnam. Women are well represented in physics in Vietnam, occupy high positions in the field, and win many national and international science awards. Overwhelmingly, women in physics in Vietnam have happy families with children who love physics.

Anh, Kim Tran; Vu, Thi Bich; Nguyen, Ngoc Toan; Do, Tran Cat; Vo, Thach Son

2013-03-01

485

UBC13, an E2 enzyme for Lys63-linked ubiquitination, functions in root development by affecting auxin signaling and Aux/IAA protein stability.  

PubMed

Unlike conventional lysine (K) 48-linked polyubiquitination, K63-linked polyubiquitination plays signaling roles in yeast and animals. Thus far, UBC13 is the only known ubiquitin-conjugating enzyme (E2) specialized in K63-linked polyubiquitination. Previous identification of Arabidopsis genes encoding UBC13 as well as its interacting partner UEV1 indicates that the UBC13-mediated ubiquitination pathway is conserved in plants; however, little is known about functions and signaling mediated through K63-linked polyubiquitination in plants. To address the functions of UBC13-mediated ubiquitination in plants, we created Arabidopsis ubc13 null mutant lines in which the two UBC13 genes were disrupted. The double mutant displayed altered root development, including shorter primary root, fewer lateral roots and only a few short root hairs in comparison with the wild type and single mutant plants, indicating that UBC13 activity is critical for all major aspects of root development. The double mutant plants were insensitive to auxin treatments, suggesting that the strong root phenotypes do not simply result from a reduced level of auxin. Instead, the ubc13 mutant had a reduced auxin response, as indicated by the expression of an auxin-responsive DR5 promoter-GFP. Furthermore, both the enzymatic activity and protein level of an AXR3/IAA17-GUS reporter were greatly increased in the ubc13 mutant, whereas the induction of many auxin-responsive genes was suppressed. Collectively, these results suggest that Aux/IAA proteins accumulate in the ubc13 mutant, resulting in a reduced auxin response and defective root development. Hence, this study provides possible mechanistic links between UBC13-mediated protein ubiquitination, root development and auxin signaling. PMID:25142088

Wen, Rui; Wang, Sheng; Xiang, Daoquan; Venglat, Prakash; Shi, Xianzong; Zang, Yuepeng; Datla, Raju; Xiao, Wei; Wang, Hong

2014-11-01

486

Light-dependent gravitropism and negative phototropism of inflorescence stems in a dominant Aux/IAA mutant of Arabidopsis thaliana, axr2.  

PubMed

Gravitropism and phototropism of the primary inflorescence stems were examined in a dominant Aux/IAA mutant of Arabidopsis, axr2/iaa7, which did not display either tropism in hypocotyls. axr2-1 stems completely lacked gravitropism in the dark but slowly regained it in light condition. Though wild-type stems showed positive phototropism, axr2 stems displayed negative phototropism with essentially the same light fluence-response curve as the wild type (WT). Application of 1-naphthaleneacetic acid-containing lanolin to the stem tips enhanced the positive phototropism of WT, and reduced the negative phototropism of axr2. Decapitation of stems caused a small negative phototropism in WT, but did not affect the negative phototropism of axr2. p-glycoprotein 1 (pgp1) pgp19 double mutants showed no phototropism, while decapitated double mutants exhibited negative phototropism. Expression of auxin-responsive IAA14/SLR, IAA19/MSG2 and SAUR50 genes was reduced in axr2 and pgp1 pgp19 stems relative to that of WT. These suggest that the phototropic response of stem is proportional to the auxin supply from the shoot apex, and that negative phototropism may be a basal response to unilateral blue-light irradiation when the levels of auxin or auxin signaling are reduced to the minimal level in the primary stems. In contrast, all of these treatments reduced or did not affect gravitropism in wild-type or axr2 stems. Tropic responses of the transgenic lines that expressed axr2-1 protein by the endodermis-specific promoter suggest that AXR2-dependent auxin response in the endodermis plays a more crucial role in gravitropism than in phototropism in stems but no significant roles in either tropism in hypocotyls. PMID:24938853

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

2014-09-01

487

Full dimensional Franck-Condon factors for the acetylene A? (1)Au-X? ?g+1 transition. II. Vibrational overlap factors for levels involving excitation in ungerade modes.  

PubMed

A full-dimensional Franck-Condon calculation has been applied to the A? (1)Au-X? ?g+1 transition in acetylene in the harmonic normal mode basis. Details of the calculation are discussed in Part I of this series. To our knowledge, this is the first full-dimensional Franck-Condon calculation on a tetra-atomic molecule undergoing a linear-to-bent geometry change. In the current work, the vibrational intensity factors for levels involving excitation in ungerade vibrational modes are evaluated. Because the Franck-Condon integral accumulates away from the linear geometry, we have been able to treat the out-of-plane component of trans bend (?4 ('')) in the linear X? state in the rotational part of the problem, restoring the ? Euler angle and the a-axis Eckart conditions. A consequence of the Eckart conditions is that the out-of-plane component of ?4 ('') does not participate in the vibrational overlap integral. This affects the structure of the coordinate transformation and the symmetry of the vibrational wavefunctions used in the overlap integral, and results in propensity rules involving the bending modes of the X? state that were not previously understood. We explain the origin of some of the unexpected propensities observed in IR-UV laser-induced fluorescence spectra, and we calculate emission intensities from bending levels of the A? state into bending levels of the X? state, using normal bending mode and local bending mode basis sets. Our calculations also reveal Franck-Condon propensities for the Cartesian components of the cis bend (?5 ('')), and we predict that the best A?-state vibrational levels for populating X?-state levels with large amplitude bending motion localized in a single C-H bond (the acetylene?vinylidene isomerization coordinate) involve a high degree of excitation in ?6 (') (cis-bend). Mode ?4 (') (torsion) populates levels with large amplitude counter-rotational motion of the two hydrogen atoms. PMID:25296804

Park, G Barratt; Baraban, Joshua H; Field, Robert W

2014-10-01

488

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

PubMed

The maize (Zea mays L.) Aux/IAA protein RUM1 (ROOTLESS WITH UNDETECTABLE MERISTEMS 1) controls seminal and lateral root initiation. To identify RUM1-dependent gene expression patterns, RNA-Seq of the differentiation zone of primary roots of rum1 mutants and the wild type was performed in four biological replicates. In total, 2 801 high-confidence maize genes displayed differential gene expression with Fc ?2 and FDR ?1%. The auxin signalling-related genes rum1, like-auxin1 (lax1), lax2, (nam ataf cuc 1 nac1), the plethora genes plt1 (plethora 1), bbm1 (baby boom 1), and hscf1 (heat shock complementing factor 1) and the auxin response factors arf8 and arf37 were down-regulated in the mutant rum1. All of these genes except nac1 were auxin-inducible. The maize arf8 and arf37 genes are orthologues of Arabidopsis MP/ARF5 (MONOPTEROS/ARF5), which controls the differentiation of vascular cells. Histological analyses of mutant rum1 roots revealed defects in xylem organization and the differentiation of pith cells around the xylem. Moreover, histochemical staining of enlarged pith cells surrounding late metaxylem elements demonstrated that their thickened cell walls displayed excessive lignin deposition. In line with this phenotype, rum1-dependent mis-expression of several lignin biosynthesis genes was observed. In summary, RNA-Seq of RUM1-dependent gene expression in maize primary roots, in combination with histological and histochemical analyses, revealed the specific regulation of auxin signal transduction components by RUM1 and novel functions of RUM1 in vascular development. PMID:24928984

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

2014-09-01

489

EDITORIAL: Teaching physics  

NASA Astrophysics Data System (ADS)

King's School, Canterbury, UK I'm working on the Physics joke book. So far I have only one joke.... Ah, sorry. That was the last thing I wrote for this section. It's easy to get confused. Now, let us be clear about one thing for a start. This is not some less than subtle bid to take over the Editorship of this journal (proof by induction: you write editorials, therefore you are the editor). Fear not, readers, there is no revolt in the ranks! Fans of Ken Dobson will be glad to know that he will return to this space soon. My presence on successive occasions is just an unfortunate coincidence of timing. This issue is one of our regular special features where we take a topic and dedicate the journal to its exploration. Colleagues reading this in universities or colleges of higher education will forgive (I hope) the bias of this edition to `From the Classroom'. We intend this issue to launch a column that will be regular, but not necessarily in every issue, in which ideas taken from the classroom experience of our readers are presented. With that in mind, we openly invite contributions for this column. The sort of thing we are looking for is that tip, experiment, way of explaining an idea or nice example of a principle, which may not be of your own invention but may well be new to inexperienced teachers or new recruits to the profession. It is not just limited to those at the chalk face. We will welcome contributions from Heads of Department and Heads of Science who may well have valuable advice and hints to pass on to people taking on departmental responsibilities. There are myriad problems associated with departmental budgets, examinations, management of resources and people etc that the newly promoted have to face from day one. We can all learn from the experience of others. The contributions need not be long; they can be in the form of a paper or a letter or a brief remark. The important thing is that, just because you have known about a trick of the trade for as long as you can remember, it does not mean that others are equally familiar with it. By and large Physics teachers are a reticent lot when it comes to writing papers for journals such as this. As a species we seem to like to get on with our jobs quietly (at least as quietly as the vital experiments with resonant tubes will allow) and have little time for writing. If possible, this column will change that. The aim is to provide a service for others - to ensure that the `Education' in Physics Education applies equally to the people delivering the curriculum as it does to those on the receiving end. So next time you dust off that homemade widget that you thought up as a visual aid for explaining the intricacies of electromagnetic induction (or whatever) jot the design down with some well chosen words and send it to us.

Allday, Jonathan

1998-11-01

490

Her physics, his physics: gender issues in Israeli advanced placement physics classes  

NASA Astrophysics Data System (ADS)

Gender gaps in physics in favour of boys are more prominent in Israel than in other countries. The main research question is to find out what gender issues are at play in Israeli advanced placement physics classes. Matriculation exam scores from approximately 400 high schools were analysed across 12 years. In addition, semi-constructed interviews were conducted with 50 advanced placement physics students (25 girls and 25 boys). In terms of participation, it was found that the ratio of girls to boys has been unchanged from 1988 to 2000 and is roughly 1:3. In terms of performance, it was found that the final matriculation scores of boys and girls are similar. However, breaking up the final scores into its two components - teachers' given grades and matriculation test scores - showed that boy's test scores are usually higher than girls' test scores, while girls' teachers' given grades are usually higher than boys'. Results from semi-constructed interviews pointed to two factors that are especially unfavourable to many girls: excessive competitiveness and lack of teaching for understanding. Girls' yearning for deep understanding is seen as a form of questing for connected knowledge. It is suggested that instructional methods that foster students' understanding while decreasing competitiveness in physics classes might contribute to girls' participation and performance in advanced physics classes while also supporting the learning of many boys.

Zohar, Anat

2003-02-01

491

Physical Development: Taking Time for Physical Play  

ERIC Educational Resources Information Center

This article discusses children's physical development through physical play. Here, the author gives ways to incorporate opportunities for physical play. For infants, time for play may have to revolve around nap schedules. This may mean allowing for different wake-sleep cycles for different infants. Teachers can divide the infants into groups so…

Strickland, Eric

2004-01-01

492

DOCTORAL PROGRAMME MATHEMATICS AND PHYSICS, Subprogramme PHYSICS,  

E-print Network

area. The nuclear Engineering module treats nuclear technology, operation, nuclear safety, reactor and reactor physics prof. dr. Andrej Trkov, prof. dr. Robert Jeraj, prof. dr. Tomaz Gyergyek The student acquires a deeper knowledge of reactor physics and related nuclear physics basics. The student is trained

Â?umer, Slobodan

493

Integrating Physically Disabled Students into Physical Education.  

ERIC Educational Resources Information Center

The manual provides guidelines and suggestions for integrating physically disabled students into physical education classes. An introductory section reviews the process of and rationale for integration. A section on students with special needs emphasizes that although physically disabled students may differ in some ways, they have the same needs…

Cooney, D.; And Others

494

Physics 4: Introductory Physics Electromagnetism and Light  

E-print Network

Physics 4: Introductory Physics Electromagnetism and Light Professor Jeffrey D. Richman Department: Electromagnetism and Light Welcome to Physics 4! What is your goal in life? If it is to become an engineer or to pursue a career in science, this is a key class for you. Understanding electromagnetism and light

Fygenson, Deborah Kuchnir

495

31 CFR 29.352 - Refunded contributions.  

Code of Federal Regulations, 2013 CFR

...and fund refunds of employee contributions made by police officers and firefighters through pay period 13. If...48 percent of the retirement contributions made to police officers or firefighters in calendar year 1997....

2013-07-01

496

31 CFR 29.352 - Refunded contributions.  

...and fund refunds of employee contributions made by police officers and firefighters through pay period 13. If...48 percent of the retirement contributions made to police officers or firefighters in calendar year 1997....

2014-07-01

497

11 CFR 9034.2 - Matchable contributions.  

Code of Federal Regulations, 2011 CFR

...or reception. (7) Contributions received from a joint fundraising activity conducted in accordance with 11 CFR 9034.8 are...such contributions are accompanied by a copy of the joint fundraising agreement when they are submitted for matching....

2011-01-01

498

Contributions to Intercollegiate Athletic Programs: Further Evidence.  

ERIC Educational Resources Information Center

Football success is found to significantly increase athletic contributions. Athletic contributions were also found to depend significantly upon football attendance, affiliation with the Atlantic Coast Conference, bowl participation, basketball winning percentage, state population, and professional competition. (RM)

Coughlin, Cletus C.; Erekson, O. Homer

1985-01-01

499

IDS contribution to ITRF2008  

NASA Astrophysics Data System (ADS)

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.

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

2010-12-01

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Aerosol contributions to speleothem geochemistry  

NASA Astrophysics Data System (ADS)

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.

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

2011-12-01