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1

Contribution aux Methodes Analytiques des Substances a L'aide de Faisceaux de Particules Chargees  

NASA Astrophysics Data System (ADS)

Nous avons vu les possibilites d'analyse par particules chargees des aerosols recueillis sur des filtres de type MILLIPORE. La meme technique a ete utilisee pour des filtres ayant servi a la filtration de l'eau du fleuve Saint-laurent. Deux techniques ont ete utilisees: (1) FAST (Forward Alpha Scattering Technique): pour analyser l'hydrogene, le carbone, l'oxygene et puis l'azote. Des alpha de 12 MeV ont ete utilises. (2) PIXE (Particle Induced X-ray Emission): pour analyser les elements moyens et lourds, dans ce cas des protons de 3 MeV ainsi que des ions d'argon de 1 et 1.6 MeV ont ete utilises. Les etudes ont montre que sous vide, la majorite des problemes proviennent des dommages causes par l'echauffement du a l'impact du faisceau sur le filtre. L'analyse quantitative par l'intermediaire du faisceau extrait peut presenter des difficultes en ce qui concerne les elements legers pour lesquels l'absorption des rayonnements caracteristiques dans l'atmosphere externe est importante. Les ions lourds se pretent mal aux analyses des aerosols du fait de leur limite de sensibilite. L'analyse directe de liquides par des protons est particulierement interessante puisqu'elle ne necessite aucune preparation prealable des echantillons. A cet effet, un programme de calcul de concentration des elements dans la solution a analyser a ete mis au point. Nous avons determine la limite de sensibilite de la methode PIXE pour les cibles minces (filtre) et pour le cas ou la matrice est de l'eau. Enfin, la technique FAST peut etre un complement de la technique PIXE.

Saidi, Abdelmajid

2

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

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

Factors Contributing to Freshman Physics Achievement.  

ERIC Educational Resources Information Center

This study was designed to determine the effect of high school physics, the frequency of high school physics laboratory use, and high school mathematics background on the success of students taking first semester physics. Data were obtained from undergraduates (N=248) at Mississippi State University. The final letter grade in the first semester of…

Gifford, Vernon D.; Harpole, Sandra H.

5

Contributions of Natural Environments to Physical Activity  

Microsoft Academic Search

\\u000a The idea that nearby nature stimulates people to be more physically active is quite popular. In this chapter the literature\\u000a regarding the link between physical activity and the residential environment is scrutinized. More specifically, after introducing\\u000a the main concepts and a theoretical framework the evidence regarding three categories of activity is examined: physical activity\\u000a in general, walking and cycling (mainly

Sjerp Vries; Thomas Claßen; Stella-Maria Eigenheer-Hug; Kalevi Korpela; Jolanda Maas; Richard Mitchell; Peter Schantz

6

Marie Curie's contribution to Medical Physics.  

PubMed

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

Jean-Claude, Rosenwald; Nüsslin, Fridtjof

2013-09-01

7

Contributions of 20th Century Women to Physics  

NSDL National Science Digital Library

This site is an electronic archive about 20th century women who have made original and important contributions to physics. Organized under their names, you will find brief documented descriptions of their major contributions to physics, biographical data, and a potpourri of some interesting information regarding their lives, achievements, and conditions of work.

Byers, Nina

2003-10-10

8

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

9

Contributions of 20th Century Women to Physics  

NSDL National Science Digital Library

"There are more female physicists than people know about!" This claim is made by the producers of this well-documented archive of citation and biographical information about 20th century women physicists, led by UCLA Physics Professor Emeritus, Nina Byers. This archive contains information about more than 50 women in the past century (to 1976) who have made original and important contributions to physics. The archive was compiled by UCLA staff and others "active in fields in which contributions have been made." Details about important contributions, publications, honors, employment history, and references are provided for each woman included in the database. Visitors can search the archive by name or by specific physics fields. A database of the print references used to compile information about the women cited is also available.

10

Contributions of athletic identity to child and adolescent physical activity  

Technology Transfer Automated Retrieval System (TEKTRAN)

Identity theorists maintain that domain-specific self-concepts help explain the differential investment of people's time and effort in various activities. This study examined the contribution of athletic identity and three key demographic variables to physical activity and sports team participation...

11

On Wolfgang Pauli's most important contributions to physics  

E-print Network

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

Norbert Straumann

2000-10-02

12

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

13

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

E-print Network

PII S0360-3016(01)01667-4 PHYSICS CONTRIBUTION IMAGE-BASED DOSE PLANNING OF INTRACAVITARY BRACHYTHERAPY: REGISTRATION OF SERIAL-IMAGING STUDIES USING DEFORMABLE ANATOMIC TEMPLATES GARY E. CHRISTENSEN, D, Iowa City, IA; Radiation Oncology Center, Washington University, St. Louis, MO Purpose: To demonstrate

Christensen, Gary E.

14

Victor Trakhtengerts: His contribution to space plasma physics  

NASA Astrophysics Data System (ADS)

A brief overview is given of the works by Victor Trakhtengerts (1939-2007) to show his contribution to the development of space plasma physics. The focus is on the following areas of his research: cyclotron interaction of waves and particles in the Earth's magnetosphere and related matters; resonance processes in magnetosphere-ionosphere interaction; nonlinear phenomena accompanying the impact of powerful HF radiation on ionospheric plasma; and collective effects in atmospheric electricity.

Demekhov, A. G.

2015-01-01

15

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

Microsoft Academic Search

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

S. Fairclough; G. Stratton

2004-01-01

16

Searching for new physics: Contributions to LEP and the LHC  

NASA Astrophysics Data System (ADS)

This dissertation is divided into two parts and consists of a series of contributions to searches for new physics with LEP and the LHC. In the first part, an exhaustive comparison of ALEPH's LEP2 data and Standard Model predictions is made for several hundred final states. The observations are in agreement with predictions with the exception of the e -mu+ final state. Using the same general purpose particle identification procedure, searches for minimal supergravity signatures, excited electrons, doubly charged Higgs bosons, singly charged Higgs bosons, and the Standard Model Higgs boson were performed. The results of those searches are in agreement with previous ALEPH analyses. The second part focuses on preparation for searches for Higgs bosons with masses between 100 and 200 GeV. Improvements to the relevant Monte Carlo generators and the reconstruction of missing transverse momentum are presented. A detailed full simulation study of Vector Boson Fusion Higgs decaying to tau leptons confirms the qualitative conclusion that the channel is powerful near the LEP limit. Several novel statistical and multivariate analysis algorithms are considered, and their impact on Higgs searches is assessed. Finally, sensitivity estimates are provided for the combination of channels available for low mass Higgs searches. With 30 fb-1 the expected ATLAS sensitivity is above 5sigma for Higgs masses above 105 GeV.

Cranmer, Kyle S.

17

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

PubMed Central

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

2014-01-01

18

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

19

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

20

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

21

Conceptual and Physical Object Qualities Contribute Differently to Motor Affordances  

ERIC Educational Resources Information Center

Priming studies have demonstrated that an object's intrinsic and extrinsic qualities (size, orientation) influence subsequent motor behavior thus suggesting that these object qualities "afford" actions that are congruent with the prime. We present four experiments that aim to evaluate the relative effect of conceptual and physical object qualities…

Vingerhoets, G.; Vandamme, K.; Vercammen, A.

2009-01-01

22

New Physics contributions to the lifetime difference in D0-anti-D0 mixing  

E-print Network

The first general analysis of New Physics contributions to the D0-anti-D0 lifetime difference (equivalently Delta Gamma_D} is presented. The extent to which New Physics (NP) contributions to |Delta C|=1 processes can produce effects in Delta Gamma_D, even if such NP contributions are undetectable in the current round of D0 decay experiments, is studied. New Physics models which do and do not dominate the lifetime difference in the flavor SU(3) limit are identified. Specific examples are provided.

Eugene Golowich; Sandip Pakvasa; Alexey A. Petrov

2006-10-03

23

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

24

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 November 1995; revised 30 July 1996 Abstract We revise the conventional nuclear effects of Fermi motion for an interacting Fermi sea and the local density approximation to translate results from nuclear matter to finite

Fernández de Córdoba, Pedro

25

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

26

Contribution of Physical Education and Active Transport to Energy Expenditure in Adolescents [AIESEP 2010, La Coruna, Spain  

Microsoft Academic Search

It has been suggested that physical education (PE) and active transport can make a meaningful contribution to children?s physical activity (PA) levels. However, data on the contribution these activities to total PA is scarce, and PE?s contribution to total physical activity energy expenditure (PAEE) has to our knowledge never been determined. This is probably explained by the methodological complexity of

Menno Slingerland; Lars Borghouts

2010-01-01

27

The Life and Times of Emmy Noether; contributions of E. Noether to particle physics  

E-print Network

The contributions of Emmy Noether to particle physics fall into two categories. One is given under the rubric of Noether's theorem, and the other may be described as her important contributions to modern mathematics. These are discussed along with an historical account of her work and what its impact has been. In addition a brief biography is given. (To be published in the Proceedings of the Int'l Conf. on The History of Original Ideas and Basic Discoveries in Particle Physics, Erice, Italy, 29 July - 4 Aug., 1994.)

Nina Byers

1994-11-23

28

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

29

Language and Reality. Peter Mittelstaedt's Contributions to the Philosophy of Physics  

NASA Astrophysics Data System (ADS)

The article investigates the way in which Peter Mittelstaedt has been contributing to the philosophy of physics for half a century. It is shown that he pursues a path between rationalism and empiricism in the sense of Erhard Scheibe’s philosophy of the physicists. Starting from Kant’s a priori he gives a rational reconstruction of the conceptual revolutions of 20th century physics. The central topic of his philosophy of physics is the quest for semantic self-consistency, which for quantum mechanics is a hard nut to crack.

Falkenburg, Brigitte

2010-10-01

30

PHYSICAL REVIEW E 85, 061921 (2012) Contributions to membrane-embedded-protein diffusion beyond hydrodynamic theories  

E-print Network

the functioning of the proteins [2] as well as potentially leading to protein aggregation [3]. The diffusion and protein aggregates [7,8]. However, re- cent experiments have measured protein diffusion coefficientsPHYSICAL REVIEW E 85, 061921 (2012) Contributions to membrane-embedded-protein diffusion beyond

Fygenson, Deborah Kuchnir

31

doi:10.1016/j.ijrobp.2004.02.053 PHYSICS CONTRIBUTION  

E-print Network

. © 2004 Elsevier Inc. HDR brachytherapy, Prostate cancer, Volume change, Edema, Dosimetric impact-dose-rate brachytherapy is an option for the treatment of prostate cancer, as mainly a boost to external beam radiationdoi:10.1016/j.ijrobp.2004.02.053 PHYSICS CONTRIBUTION DOSIMETRIC IMPACT OF PROSTATE VOLUME CHANGE

Pouliot, Jean

32

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

33

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

34

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

35

Gene Density, Transcription and Insulators Contribute to the Partition of the Drosophila Genome into Physical Domains  

PubMed Central

SUMMARY The mechanisms responsible for the establishment of physical domains in metazoan chromosomes are poorly understood. Here we find that physical domains in Drosophila chromosomes are demarcated at regions of active transcription and high gene density that are enriched for transcription factors and specific combinations of insulator proteins. Physical domains contain different types of chromatin defined by the presence of specific proteins and epigenetic marks, with active chromatin preferentially located at the borders and silenced chromatin in the interior. Domain boundaries participate in long-range interactions that may contribute to the clustering of regions of active or silenced chromatin in the nucleus. Analysis of transgenes suggests that chromatin is more accessible and permissive to transcription at the borders than inside domains, independent of the presence of active or silencing histone modifications. These results suggest that the higher-order physical organization of chromatin may impose an additional level of regulation over classical epigenetic marks. PMID:23041285

Hou, Chunhui; Li, Li; Qin, Zhaohui S.; Corces, Victor G.

2012-01-01

36

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

37

" ... It is estimated that [since the early 1960s] accelerator science has influenced almost 1/3 of physicists and physics studies and on average contributed to physics  

E-print Network

/3 of physicists and physics studies and on average contributed to physics Nobel Prize-winning research every 2.9 years." Haussecker & Chao, Physics in Perspective 13, 146 (2011). Use of accelerators Water (Sound Speed) #12;Well Behaved (linear) perturbations Proper tracking: Crest follows Cs With high

Anlage, Steven

38

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

39

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

40

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

41

The Contribution of Simulations to the Practical Work of Foundation Physics Students at the University of Limpopo  

ERIC Educational Resources Information Center

Purpose: Practical work is regarded as an essential part of learning; hence most tertiary institutions have included a practical component in their physics courses. There is a concern about the effectiveness of the practical work in most universities. The purpose of this study is to assess the contributions of simulations on 20 Foundation Physics…

Mhlongo, Motlalepula Rebecca; Kriek, Jeanne; Basson, Ilsa

2011-01-01

42

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

E-print Network

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

Di Girolami, Cristina

43

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

44

Family Violence and Children's Behavior Problems: Independent Contributions of Intimate Partner and Child-Directed Physical Aggression.  

PubMed

Using data from a diverse sample of 581 families living in predominantly low-income, rural communities, the current study sought to investigate the longitudinal associations among father-perpetrated intimate partner violence (IPV) and child-directed physical aggression perpetrated by the mother. The unique contributions of each of these types of family violence on children's behavioral problems at school entry were also examined. Results confirm bidirectional associations between father-perpetrated IPV and maternal physical aggression directed toward the child, and indicate that both types of physical aggression contribute to child behavior problems at school entry. PMID:25431522

Gustafsson, Hanna C; Barnett, Melissa A; Towe-Goodman, Nissa R; Mills-Koonce, W Roger; Cox, Martha J

2014-10-01

45

Can one detect new physics in I=0 and/or I=2 contributions to the decays B --> pi pi?  

E-print Network

We study the effects of new-physics contributions to B --> pi pi decays, which can be parametrized as four new complex quantities. A simple analysis is provided by utilizing the reparametrization invariance of the decay amplitudes. We find that six quantities can be reabsorbed into the definitions of Standard Model-like parameters. As a result, the usual isospin analysis provides only two constraints on new physics which are independent of estimates for the Standard Model contributions. In particular, we show that one is not sensitive to new physics affecting the I=0 amplitudes. On the other hand, I=2 new physics can be detected, and its parameters can be measured by using independent determinations of the weak phases. We obtain constraints on these new-physics parameters through a fit to the current experimental data.

Seungwon Baek; F. J. Botella; David London; Joao P. Silva

2005-06-07

46

Contribution of cortical lesion subtypes at 7T MRI to physical and cognitive performance in MS  

PubMed Central

Objectives: Evaluate cross-sectionally the contribution of focal cortical lesion (CL) subtypes at ultra-high-field MRI and traditional MRI metrics of brain damage to neurologic disability and cognitive performance in a heterogeneous multiple sclerosis (MS) cohort. Methods: Thirty-four patients with early or established disease including clinically isolated syndrome, relapsing-remitting MS, and secondary progressive MS were scanned on a human 7-tesla (7T) (Siemens) scanner to acquire fast low-angle shot (FLASH) T2*-weighted images for characterization of white matter and deep gray matter lesion volume, and CL types. Patients also underwent anatomical 3T MRI for cortical thickness estimation, and neuropsychological testing within 1 week of the 7T scan. Twenty-seven patient scans were acceptable for further analysis. Neurologic disability was measured using the Expanded Disability Status Scale. Results: Type III-IV CLs had the strongest relationship to physical disability (? = 0.670, p < 0.0001). White matter lesion volume and type I CLs are each significantly associated with 6 of 11 neuropsychological test variables. Type III-IV CLs significantly correlate with 4 of 11 neuropsychological test variables whereas type II CLs, deep gray matter lesion volume, and cortical thickness metrics are less frequently associated with cognitive performance. Conclusions: Leukocortical (type I) and subpial (III-IV) CLs identified on 7T FLASH-T2* sequences are potential cortical biomarkers of cognitive and neurologic status in MS. PMID:23864311

Nielsen, A. Scott; Kinkel, Revere P.; Madigan, Nancy; Tinelli, Emanuele; Benner, Thomas

2013-01-01

47

A Brief Overview of the Major Contribution to Physics by Landau  

E-print Network

Lev Davidovich Landau was arguably one of the greatest and most versatile physicists. His work spans a very wide range and has had a considerable impact on all areas of physics including condensed matter physics, plasma, high energy and particle physics, fluid dynamics, astrophysics, gravitation, elasticity, etc. Along with his former fellow student, E Lifshitz, he wrote the set of a dozen volumes, the magnificent world-renowned Course of Theoretical Physics which covered topics ranging from mechanics, classical theory of fields, quantum mechanics, electrodynamics of continuous media, fluid dynamics, kinetic theory, theory of elasticity, statistical physics and more.

Sivaram, C

2009-01-01

48

A Brief Overview of the Major Contribution to Physics by Landau  

E-print Network

Lev Davidovich Landau was arguably one of the greatest and most versatile physicists. His work spans a very wide range and has had a considerable impact on all areas of physics including condensed matter physics, plasma, high energy and particle physics, fluid dynamics, astrophysics, gravitation, elasticity, etc. Along with his former fellow student, E Lifshitz, he wrote the set of a dozen volumes, the magnificent world-renowned Course of Theoretical Physics which covered topics ranging from mechanics, classical theory of fields, quantum mechanics, electrodynamics of continuous media, fluid dynamics, kinetic theory, theory of elasticity, statistical physics and more.

C Sivaram; Kenath Arun

2009-02-16

49

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

PubMed Central

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

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

1975-01-01

50

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

ERIC Educational Resources Information Center

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…

Backman, Erik

2011-01-01

51

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

ERIC Educational Resources Information Center

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…

Maurines, Laurence; Beaufils, Daniel

2013-01-01

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

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

54

Physics Contribution A Mechanism-Based Approach to Predict the Relative  

E-print Network

of Protons and Carbon Ions in Radiation Therapy Malte C. Frese, Ph.D.,*,y Victor K. Yu, M.S.,* Robert D effective- ness (RBE) of heavy ions compared to photons offers unique, and not fully under- stood-misrepair-fixation (RMF) model. Treatments that exploit the combined physical andradiobiologic properties of heavy ions

Stewart, Robert D.

55

Physical growth and development of the malnourished child: contributions from 50 years of research at INCAP.  

PubMed

This paper reviews the main findings and policy implications of 50 years (1949-1999) of research conducted by INCAP on growth and development. Topical areas reviewed include a) maternal size and birthweight and the causes of intrauterine growth retardation (IUGR), b) patterns and causes of postnatal growth retardation, c) the relative importance of genetics and the environment in explaining differences in growth among populations, d) the implications of being small, for both children and adults, e) bone growth and maturation and dental development, f) menarche, and g) methodological contributions such as anthropometric reference data, quality control of data collection, development of risk indicators and use of anthropometry in nutrition surveillance systems. Key contributions to knowledge by INCAP include a) characterization of growth failure and maturational delays as mainly occurring during the intrauterine period and the first 3 years of life b) clarification of the role of small maternal size and of inadequate dietary intakes during pregnancy as major causes of intrauterine growth failure, c) evidence that diarrheal diseases and poor dietary intakes are the principal causes of growth failure in early childhood, d) demonstration that environmental factors related to poverty, and not genetic or racial ancestry, account for most of the differences in growth between populations, e) evidence that growth failure predicts functional impairment in the child as well as in the adult andf) demonstration that nutrition interventions are effective in preventing growth failure and its consequences, if targeted to needy women and young children. INCAP's work has contributed knowledge that has informed and improved policies and programs aimed at overcoming maternal and child undernutrition and promoting optimal growth and development. PMID:20461905

Martorell, Reynaldo

2010-03-01

56

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

57

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

E-print Network

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

Paris-Sud XI, Université de

58

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, Jörg; Toussaint, Sandy

2012-01-01

59

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

60

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

PubMed

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, Jörg; Toussaint, Sandy

2012-04-24

61

Neuroimaging Techniques: a Conceptual Overview of Physical Principles, Contribution and History  

SciTech Connect

This paper is meant to provide a brief overview of the techniques currently used to image the brain and to study non-invasively its anatomy and function. After a historical summary in the first section, general aspects are outlined in the second section. The subsequent six sections survey, in order, computed tomography (CT), morphological magnetic resonance imaging (MRI), functional magnetic resonance imaging (fMRI), diffusion-tensor magnetic resonance imaging (DWI/DTI), positron emission tomography (PET), and electro- and magneto-encephalography (EEG/MEG) based imaging. Underlying physical principles, modelling and data processing approaches, as well as clinical and research relevance are briefly outlined for each technique. Given the breadth of the scope, there has been no attempt to be comprehensive. The ninth and final section outlines some aspects of active research in neuroimaging.

Minati, Ludovico [Scientific Direction, Istituto Nazionale Neurologico Carlo Besta, via Celoria 11, 20133, Milan (Italy)

2006-06-08

62

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

E-print Network

The dynamics of a physical gel, namely the Low Molecular Mass Organic Gelator {\\textit Methyl-4,6-O-benzylidene-$\\alpha$ -D-mannopyranoside ($\\alpha$-manno)} in water and toluene are probed by neutron scattering. Using high gelator concentrations, we were able to determine, on a timescale from a few ps to 1 ns, the number of solvent molecules that are immobilised by the rigid network formed by the gelators. We found that only few toluene molecules per gelator participate to the network which is formed by hydrogen bonding between the gelators' sugar moieties. In water, however, the interactions leading to the gel formations are weaker, involving dipolar, hydrophobic or $\\pi-\\pi$ interactions and hydrogen bonds are formed between the gelators and the surrounding water. Therefore, around 10 to 14 water molecules per gelator are immobilised by the presence of the network. This study shows that neutron scattering can give valuable information about the behaviour of solvent confined in a molecular gel.

Sylvie Spagnoli; Isabelle Morfin; Miguel A. Gonzalez; Pierre Carcabal; Marie Plazanet

2015-02-05

63

Contribution of diet and physical activity to metabolic parameters among survivors of childhood leukemia  

PubMed Central

Purpose Determine the relationship between diet and metabolic abnormalities among adult survivors of childhood acute lymphoblastic leukemia (ALL). Methods We surveyed 117 adult survivors of childhood ALL using the Harvard Food Frequency Questionnaire. Physical activity energy expenditure (PAEE) was measured with the SenseWear Pro2 Armband. Insulin resistance was estimated using the Homeostasis Model for Insulin Resistance (HOMA-IR). Visceral and subcutaneous adiposity were measured by abdominal CT. Adherence to a Mediterranean diet pattern was calculated using the index developed by Trichopoulou. Subjects were compared using multivariate analysis adjusted for age and gender. Results Greater adherence to a Mediterranean diet pattern was associated with lower visceral adiposity (P=0.07), subcutaneous adiposity (P<0.001), waist circumference (P=0.005), and body mass index (P=0.04). For each point higher on the Mediterranean Diet Score, the odds of having the metabolic syndrome fell by 31% (OR 0.69; 95% CI 0.50, 0.94; P = 0.019). Higher dairy intake was associated with higher HOMA-IR (P =0.014), but other individual components of the Mediterranean diet, such as low intake of meat or high intake of fruits and vegetables, were not significant. PAEE was not independently associated with metabolic outcomes, although higher PAEE was associated with lower body mass index. Conclusions Adherence to a Mediterranean diet pattern was associated with better metabolic and anthropometric parameters in this cross-sectional study of ALL survivors. PMID:23187859

Tonorezos, Emily S.; Robien, Kim; Eshelman-Kent, Debra; Moskowitz, Chaya S.; Church, Timothy S.; Ross, Robert; Oeffinger, Kevin C.

2012-01-01

64

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

ERIC Educational Resources Information Center

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

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

65

Collaborateurs aux lignes directrices en soins primaires  

PubMed Central

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

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

2015-01-01

66

Pathologie vgtale (synthse) Rsistances aux herbicides  

E-print Network

Pathologie végétale (synthèse) Résistances aux herbicides chez les mauvaises herbes H Darmency J; accepté le 27 mai 1990) Résumé — L'usage inconsidéré des herbicides pour un désherbage systématique des grandes cultures a conduit à l'apparition de mauvaises herbes résistantes. Huit familles d'herbicides

Boyer, Edmond

67

REVIEW: The contribution of medical physics to the development of psoralen photochemotherapy (PUVA) in the UK: a personal reminiscence  

NASA Astrophysics Data System (ADS)

Psoralen photochemotherapy (PUVA) is the combined treatment of skin disorders with a photosensitizing drug (Psoralen) and UltraViolet A radiation. The introduction of PUVA therapy has arguably been the most important development in dermatology over the past 30 years and from the first days of the treatment being introduced in the UK, British medical physicists were an integral part of the effort to establish it. Medical physicists have contributed to this development in a number of ways, from designing irradiation units in the early days of the technique, through to collaborating with dermatologists in prosecuting clinical and experimental studies aimed at improving patient outcomes. That the dose of UVA radiation is administered quantitatively, and not qualitatively, has probably been the single most important contribution made by several medical physicists over this period. However, despite concerns that were expressed almost 30 years ago about the accuracy with which UVA doses are administered to patients, the medical physics community still has some way to go before we can be satisfied that statements about UVA irradiance and dose can be made with confidence.

Diffey, Brian

2006-07-01

68

Explaining educational differences in leisure-time physical activity in Europe: the contribution of work-related factors.  

PubMed

Although educational differences in leisure-time physical activity (LTPA) exist across Europe, the independent effect of educational level on leisure-time physical activity has rarely been explored. This study examines the relative contribution of occupational class, employment status, and educational level to LTPA across 12 European countries. The data were obtained from 12 European health surveys conducted at the turn of the century and identified in the EUROTHINE project. All information was self-reported. Logistic regression was applied and relative inequality index (RII) was calculated. Analyses were limited to those in the prime working-age (age 30-59; total N=137,646) men and women. In all 12 European countries, LTPA was more common in the high-educated than in the low-educated. The association between education and LTPA remained mostly unchanged after adjusting for marital status, urbanization, and self-rated health. After further adjusting for occupational class and employment status, the educational differences in LTPA were only slightly attenuated. An inverse association was found between educational level and LTPA across almost all 12 European countries. Occupational class and employment status had only a modest effect on educational differences in LTPA in most of the examined countries, suggesting that education remains an important predictor of LTPA. PMID:21039899

Mäkinen, T E; Sippola, R; Borodulin, K; Rahkonen, O; Kunst, A; Klumbiene, J; Regidor, E; Ekholm, O; Mackenbach, J; Prättälä, R

2012-06-01

69

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

ERIC Educational Resources Information Center

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

Public Works Canada, Ottawa (Ontario).

70

Measurements of the constituent contributions to the physical properties of fibroblast populated collagen microtissues with magnetic micro-tissue stretchers  

NASA Astrophysics Data System (ADS)

The mechanical properties of fibroblast populated collagen matrix (FPCM) provide important physical cues to regulate physiological and pathological processes of encapsulated cells. The mechanical strength of FPCM is arises from both of its constituents: the collagen matrix and the fibroblasts. Existing methods to separate the contribution of individual constituents by treating cm-scale tissue samples with decellularization drugs for prolonged periods have been shown to adversely affect the properties of the collagen matrix. To minimize such matrix damage, we have developed a magnetic microtissue stretching system that allows us to grow arrays of sub-mm scale microtissues that can be rapidly decellularized. This consists of arrays of paired micro-cantilevers that support the 3D FPCM and can be driven by incorporated magnetic material via externally applied magnetic fields. By measuring the tensile force applied to the FPCM and the tissue strain, we found the stiffness of the matured FPCM is 28.1 +- 1.8 kPa and that of the decellularized collagen matrix is 23.1 +- 3.1 kPa. These measurements of the stiffness of the intact collagen matrix in a remodeled FPCM can provide important clues on the mechanical environment that regulates the biological function of encapsulated cells.

Zhao, Ruogang; Liu, Alan; Boudou, Thomas; Chen, Christopher; Reich, Daniel

2012-02-01

71

All part of the job? The contribution of the psychosocial and physical work environment to health inequalities in Europe and the European health divide.  

PubMed

This study is the first to examine the contribution of both psychosocial and physical risk factors to occupational inequalities in self-assessed health in Europe. Data from 27 countries were obtained from the 2010 European Working Conditions Survey for men and women aged 16 to 60 (n = 21,803). Multilevel logistic regression analyses (random intercept) were applied, estimating odds ratios of reporting less than good health. Analyses indicate that physical working conditions account for a substantial proportion of occupational inequalities in health in both Central/Eastern and Western Europe. Physical, rather than psychosocial, working conditions seem to have the largest effect on self-assessed health in manual classes. For example, controlling for physical working conditions reduced the inequalities in the prevalence of"less than good health" between the lowest (semi- and unskilled manual workers) and highest (higher controllers) occupational groups in Europe by almost 50 percent (Odds Ratio 1.87, 95% Confidence Interval 1.62-2.16 to 1.42, 1.23-1.65). Physical working conditions contribute substantially to health inequalities across "post-industrial" Europe, with women in manual occupations being particularly vulnerable, especially those living in Central/Eastern Europe. An increased political and academic focus on physical working conditions is needed to explain and potentially reduce occupational inequalities in health. PMID:24919305

Toch, Marlen; Bambra, Clare; Lunau, Thorsten; van der Wel, Kjetil A; Witvliet, Margot I; Dragano, Nico; Eikemo, Terje A

2014-01-01

72

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

73

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

74

How Adolescents’ Mental Health Predicts Their Physical Health: Unique Contributions of Indicators of Subjective Well-being and Psychopathology  

Microsoft Academic Search

Studies among youth have established a link between mental health and physical health, and highlight the importance of attending\\u000a to these relationships to provide a more complete picture of functioning. However, most previous investigations have limited\\u000a their focus to examining the relationship between physical health and either particular aspects of psychopathology or particular\\u000a aspects of subjective well-being. The current study

Emily Shaffer-Hudkins; Shannon Suldo; Troy Loker; Amanda March

2010-01-01

75

CROSS-DISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY: Evolutionary Self-Questioning Games with Local Contribution  

NASA Astrophysics Data System (ADS)

We investigate the evolutionary Prisoner's Dilemma and the Snowdrift Game on small-world networks in a realistic social context where individuals consider their local contributions to their group and update their strategies by self-questioning. An individual with introspection can determine whether its current strategy is superior by playing a virtual round of the game and its local contribution is defined as the sum of all the payoffs its neighbors collect against it. In our model, the performance of an individual is determined by both its payoff and local contribution through a linear combination. We demonstrate that the present mechanism can produce very robust cooperative behavior in both games. Furthermore, we provide theoretical analysis based on mean-field approximation, and find that the analytical predictions are qualitatively consistent with the simulation results.

Liu, Yong-Kui; Li, Zhi; Chen, Xiao-Jie; Wang, Long

2009-08-01

76

Scaling up of physical activity interventions in Brazil: how partnerships and research evidence contributed to policy action  

PubMed Central

The global health burden due to physical inactivity is enormous and growing. There is a need to consider new ways of generating evidence and to identify the role of government in promoting physical activity at the population level. In this paper, we summarize key findings from a large-scale cross-national collaboration to understand physical activity promotion in Brazil. We describe the main aspects of the partnership of Project GUIA (Guide for Useful Interventions for Activity in Brazil and Latin America) that sustained the collaborative effort for eight years and describe how the evidence gathered from the collaboration triggered political action in Brazil to scale up a physical activity intervention at the national level. Project GUIA is a cross-national multidisciplinary research partnership designed to understand and evaluate current efforts for physical activity promotion at the community level in Latin America. This example of scaling up is unprecedented for promoting health in the region and is an example that must be followed and evaluated. PMID:24323944

Hoehner, Christine M.; Hallal, Pedro C.; Reis, Rodrigo S.; Simoes, Eduardo J.; Malta, Deborah C.; Pratt, Michael; Brownson, Ross C.

2013-01-01

77

Inner stationary phase point contribution of physical optic in terms of the modified edge representation line integrals (curved surfaces)  

Microsoft Academic Search

The unique concept of the modified edge representation (MER) was proposed for the surface to the line integral reduction of the physical optic (PO). The equivalence between the MER line and the PO surface integration was analytically derived by using the Stokes theorem relations as well as asymptotic treatments, for the smooth scattering surfaces without inner stationary phase points (SPP).

Luis Rodriguez; Koji Yukimasa; Tetsu Shijo; Makoto Ando

2007-01-01

78

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

PubMed

The aims of this study were (1) to determine minutes of moderate-to-vigorous physical activity (MVPA) and vigorous physical activity (VPA) accrued in youth sport football (also internationally referred to as soccer), and the contribution towards daily weekend MVPA and VPA for males aged 9 to 16 years, and (2) to investigate variability in these outcomes related to age and playing position. One hundred and nine male grassroots footballers (Mean age = 11.98 ± 1.75 years) wore a GT3X accelerometer for 7 days. Weekend youth sport football participation and playing position were recorded. Youth sport football MVPA (M = 51.51 ± 17.99) and VPA (M = 27.78 ± 14.55) contributed 60.27% and 70.68% towards daily weekend MVPA and VPA, respectively. Overall, 36.70% of participants accumulated ? 60 minutes MVPA and 69.70% accrued ? 20 minutes of VPA during youth sport. For participants aged 13 to16 years, youth sport football MVPA and VPA were significantly higher, and contributed a greater amount towards daily weekend MVPA and VPA than for participants aged 9 to 12 years (p = <.01). Youth sport football is an important source of MVPA and VPA at the weekend for male youth, and particularly for adolescents. Participation may offer opportunity for weekend engagement in VPA towards health enhancing levels. PMID:25387122

Fenton S, A M; Duda, Joan L; Barrett, Timothy

2014-11-10

79

Distinct Contributions of Adverse Childhood Experiences and Resilience Resources: A Cohort Analysis of Adult Physical and Mental Health  

PubMed Central

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

80

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

PubMed

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

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

2008-01-01

81

Sequence-specific physical properties of African green monkey alpha-satellite DNA contribute to centromeric heterochromatin formation.  

PubMed

Satellite DNA, a major component of eukaryotic centromeric heterochromatin, is potentially associated with the processes ensuring the faithful segregation of the genetic material during cell division. Structural properties of alpha-satellite DNA (AS) from African green monkey (AGM) were studied. Atomic force microscopy imaging showed smaller end-to-end distances of AS fragments than would be expected for the persistence length of random sequence DNA. The apparent persistence length of the AS was determined as 35nm. Gel-electrophoresis indicated only a weak contribution of intrinsic curvature to the DNA conformations suggesting an additional contribution of an elevated bending flexibility to the reduced end-to-end distances. Next, the force-extension behavior of the naked AS and in complex with nucleosomes was studied using optical tweezers. The naked AS showed a reduced overstretching transition force (-18% the value determined for random DNA) and higher forces required to straighten the DNA. Finally, reconstituted AS nucleosomes disrupted at significantly higher forces as compared with random DNA nucleosomes which is probably due to structural properties of the AS which stabilize the nucleosomes. The data support that the AS plays a role in the formation of centromeric heterochromatin due to specific structural properties and suggest that a relatively higher mechanical stability of nucleosomes is important in AGM-AS chromatin. PMID:19332128

Bussiek, Malte; Hoischen, Christian; Diekmann, Stephan; Bennink, Martin L

2009-07-01

82

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 passionné aux morts de la France Combattante, le 18 juin 1943 à l 18 juin, le fondateur de la France Libre dépose une gerbe au monument aux morts de la Grande Guerre

Paris-Sud XI, Université de

83

Plant embryogenesis requires AUX/LAX-mediated auxin influx.  

PubMed

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

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

2015-02-15

84

HOMMES ET FEMMES FACE AUX INGALITS ET LA PAUVRET  

E-print Network

HOMMES ET FEMMES FACE AUX IN�GALIT�S ET � LA PAUVRET� AU TRAVAIL Pascale ABSI, Pascale PH�LINAS, publié dans "La mondialisation au risque des travailleurs (2007) 53-73" #12;ABSI P., PHELINAS P., SELIM M

Boyer, Edmond

85

Bienvenue aux gays du monde entier . Tourisme gay et mondialisation  

E-print Network

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

Paris-Sud XI, Université de

86

Une lecture enrichie des réponses aux enquêtes de conjoncture  

Microsoft Academic Search

[fre] Une lecture enrichie des réponses aux enquêtes de conjoncture . . Les enquêtes de conjoncture ont pour objectif d’appréhender, le plus rapidement et le plus simplement possible, les évolutions récentes et probables de l'activité économique. La plupart des questions posées amènent des réponses qualitatives à trois modalités (qualification d’une évolution: en hausse \\/ stable \\/ en baisse). Les indicateurs

François Hild

2002-01-01

87

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,

88

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

89

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'hui le maintien de la peine de mort, du moins au sein de l'ensemble des pays démocratiques. � son actif contribuant à la fois à une déresponsabilisation généralisée à l'égard de la peine de mort et au renforcement

Boyer, Edmond

90

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

NASA Astrophysics Data System (ADS)

Air-sea interaction is unquestionably a critical aspect of hurricane structure and evolution. Recent experiments with high resolution (km-scale) nested models have shown strong sensitivity to the representation of air sea fluxes - both the direct (interfacial) transfers and contributions of sea spray. With the advent of fully coupled (air-wave-ocean) models, it becomes possible to represent the surface fluxes in more physical detail (as opposed to simple wind-speed driven bulk flux algorithms). Recent theoretical work has led to a new representation of sea spray droplet flux that is driven by the fundamental processes associated with blowing large droplets off the tops of breaking waves. In today's high-resolution numerical models sea spray effects are not represented explicitly but are input at modifications to bulk flux relationships applied to the lowest atmospheric grid level. These bulk flux relationships assume a subgrid-scale structure for the scalar profiles (essentially Monin-Obukhov similarity). The actual contribution of the droplet spectrum to the sensible and latent heat fluxes is computed assuming the droplets fall through this specified temperature/humidity environment. However, this is complicated by coupling of the droplet heat fluxes to the mean temperature and humidity profiles near the surface. Thus, the heat and moisture transferred by the droplets modifies the local environment that drives these transfers - a process referred to a feedback. Feedback has little or no effect on the total enthalpy flux carried by the sea spray but it affects the partition of sensible versus latent heat (Bowen ratio). In this paper we will describe and compare three representations (one old and two new) of this subgrid-scale feedback process.

Fairall, C.; Bao, J.; Deszoeke, S.

2007-12-01

91

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

E-print Network

Questionnements géographiques sur les monuments aux morts : symboliques et territoires de la'armistice mettant fin à la Grande guerre ont réuni différentes générations autour des monuments aux morts. Fait des monuments aux morts de leur commune en ce jour du 11 novembre. Un rituel qui s'ancre dans des

Paris-Sud XI, Université de

92

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

PubMed Central

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

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

2014-01-01

93

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

PubMed

The plant hormone auxin transcriptionally activates Aux/IAA genes. Auxin plays an important role in regulating fruit growth and ripening of strawberry and Aux/IAA genes have been extensively studied in Arabidopsis, rice and tomato, but little information is available on strawberry fruit. In the present work, two full-length of early auxin-responsive Aux/IAA genes, termed FaAux/IAA1 and FaAux/IAA2 respectively, were isolated and characterized from strawberry fruit. Moreover, the expression profiles of two FaAux/IAA genes during fruit development, and the effect of naphthalene acetic acid (NAA) on their expressions of fruits at two different developmental stages were also investigated. The results showed that the levels of FaAux/IAA1 and FaAux/IAA2 transcripts were very high at early stage of fruit development, and decreased sharply at ripening stage (after white stage). In addition, NAA applied at the stage of large green and white fruit obviously increased the accumulations of FaAux/IAA1 and FaAux/IAA2 transcripts. These data suggested that the expressions of both FaAux/IAA1 and FaAux/IAA2 genes were likely to be involved in early fruit development, and the enhancement of FaAux/IAAs transcripts might be attributed at least or partially to auxin-induced fruit growth and delayed fruit ripening of strawberry. PMID:20563652

Liu, Du-juan; Chen, Jian-ye; Lu, Wang-jin

2011-02-01

94

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

95

Vaincre la réticence à l’instauration d’un nouveau schéma à base d’enfuvirtide grâce aux soins aux patients et aux mesures de soutien  

PubMed Central

Les patients peuvent être réticents à l’idée de commencer un traitement par l’enfuvirtide en raison de préoccupations relatives à l’auto-injection et à d’autres questions connexes. Étant donné que l’introduction d’une nouvelle classe de médicaments peut améliorer considérablement l’efficacité d’un schéma antirétroviral, appuyer le patient dans l’instauration de l’enfuvirtide, un agent sûr et efficace appartenant à une nouvelle classe, offre des bienfaits thérapeutiques. Dans le cas du présent patient, qui affichait une résistance aux trois grandes classes d’antirétroviraux, l’enfuvirtide a été ajouté avec succès au traitement grâce à un groupe d’aide par les pairs et à une assistance clinique. L’acceptation du patient a augmenté grâce à l’utilisation d’un système d’injection sans aiguilles (Biojector), avec des effets secondaires minimes et une amélioration significative du contrôle virologique et immunologique.

Trottier, Benoît

2007-01-01

96

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

97

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

98

AUX/LAX family of auxin influx carriers—an overview  

PubMed Central

Auxin regulates several aspects of plant growth and development. Auxin is unique among plant hormones for exhibiting polar transport. Indole-3-acetic acid (IAA), the major form of auxin in higher plants, is a weak acid and its intercellular movement is facilitated by auxin influx and efflux carriers. Polarity of auxin movement is provided by asymmetric localization of auxin carriers (mainly PIN efflux carriers). PIN-FORMED (PIN) and P-GLYCOPROTEIN (PGP) family of proteins are major auxin efflux carriers whereas AUXIN1/LIKE-AUX1 (AUX/LAX) are major auxin influx carriers. Genetic and biochemical evidence show that each member of the AUX/LAX family is a functional auxin influx carrier and mediate auxin related developmental programmes in different organs and tissues. Of the four AUX/LAX genes, AUX1 regulates root gravitropism, root hair development and leaf phyllotaxy whereas LAX2 regulates vascular development in cotyledons. Both AUX1 and LAX3 have been implicated in lateral root (LR) development as well as apical hook formation whereas both AUX1 and LAX1 and possibly LAX2 are required for leaf phyllotactic patterning. PMID:23087694

Swarup, Ranjan; Péret, Benjamin

2012-01-01

99

AUX/LAX family of auxin influx carriers-an overview.  

PubMed

Auxin regulates several aspects of plant growth and development. Auxin is unique among plant hormones for exhibiting polar transport. Indole-3-acetic acid (IAA), the major form of auxin in higher plants, is a weak acid and its intercellular movement is facilitated by auxin influx and efflux carriers. Polarity of auxin movement is provided by asymmetric localization of auxin carriers (mainly PIN efflux carriers). PIN-FORMED (PIN) and P-GLYCOPROTEIN (PGP) family of proteins are major auxin efflux carriers whereas AUXIN1/LIKE-AUX1 (AUX/LAX) are major auxin influx carriers. Genetic and biochemical evidence show that each member of the AUX/LAX family is a functional auxin influx carrier and mediate auxin related developmental programmes in different organs and tissues. Of the four AUX/LAX genes, AUX1 regulates root gravitropism, root hair development and leaf phyllotaxy whereas LAX2 regulates vascular development in cotyledons. Both AUX1 and LAX3 have been implicated in lateral root (LR) development as well as apical hook formation whereas both AUX1 and LAX1 and possibly LAX2 are required for leaf phyllotactic patterning. PMID:23087694

Swarup, Ranjan; Péret, Benjamin

2012-01-01

100

OsAUX1 controls lateral root initiation in rice (Oryza sativa L.).  

PubMed

Polar auxin transport, mediated by influx and efflux transporters, controls many aspects of plant growth and development. The auxin influx carriers in Arabidopsis have been shown to control lateral root development and gravitropism, but little is known about these proteins in rice. This paper reports on the functional characterization of OsAUX1. Three OsAUX1 T-DNA insertion mutants and RNAi knockdown transgenic plants reduced lateral root initiation compared to WT plants. OsAUX1 overexpression plants exhibited increased lateral root initiation and OsAUX1 was highly expressed in lateral roots and lateral root primordia. Similarly, the auxin reporter, DR5-GUS, was expressed at lower levels in osaux1 than in the WT plants, which indicated that the auxin levels in the mutant roots had decreased. Exogenous NAA treatment rescued the defective phenotype in osaux1-1 plants, whereas IAA and 2,4-D could not, which suggested that OsAUX1 was a putative auxin influx carrier. The transcript levels of several auxin-signaling genes and cell cycle genes significantly declined in osaux1, hinting that the regulatory role of OsAUX1 may be mediated by auxin-signaling and cell cycle genes. Overall, our results indicated that OsAUX1 was involved in polar auxin transport and functioned to control auxin-mediated lateral root initiation in rice. PMID:25311360

Zhao, Heming; Ma, Tengfei; Wang, Xin; Deng, Yingtian; Ma, Haoli; Zhang, Rongsheng; Zhao, Jie

2014-10-13

101

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

102

Which Contributes More to Childhood Adiposity? High Levels of Sedentarism Versus Low Levels of Moderate-through-Vigorous Physical Activity: The Iowa Bone Development Study  

PubMed Central

Objective To examine the relative importance of sedentarism and modeate-to-vigorous physical activity for adiposity development in children and adolescents. Study design 277 boys and 277 girls (95% white; two-thirds of parents with college graduation or higher education) from the Iowa Bone Development Cohort Study completed body fat and accelerometry measurement at examinations of ages 8, 11, 13 and/or 15 years (during 2000 to 2009). The main exposure was accelerometry-measured sedentary time, frequency of breaks in sedentary time, and moderate-to vigorous-intensity physical activity time. The outcome was dual energy x-ray absorptiometry (DXA)-measured body fat mass Results Adjusted for age, height, physical maturity, and sedentary time, growth models showed that high moderate-to-vigorous physical activity time was associated with low body fat mass in both boys (coefficient ? = ?0.10 ± 0.02) and girls (? = ?0.05 ± 0.01; Ps < 0.01). However, sedentary time and frequency of breaks in sedentary time were not associated with body fat mass. Conclusions This study does not support an independent effect of sedentarism on adiposity. The preventive effect of moderate-to vigorous-intensity physical activity on adiposity in children and adolescents remained strong after adjusting for the effect of sedentarism. PMID:23305957

Kwon, Soyang; Burns, Trudy L.; Levy, Steven M.; Janz, Kathleen F.

2013-01-01

103

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

PubMed Central

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

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

2014-01-01

104

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 Management appliqué aux problématiques de Développement Durable dans la Supply Chain Résumé Le concept de, Knowledge Management, Supply Chain, Nonaka, Modèle SECI halshs-00534785,version1-10Nov2010 #12

Paris-Sud XI, Université de

105

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

106

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

107

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

108

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  

Microsoft Academic Search

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 analysing arguments associated with the intended curriculum focus we highlight the contrasting

Malcolm Thorburn; Mike Jess; Matthew Atencio

2011-01-01

109

Humans, Intentionality, Experience and Tools for Learning: Some Contributions from Post-cognitive Theories to the Use of Technology in Physics Education  

NSDL National Science Digital Library

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

Bernhard, Jonte

2009-07-08

110

Auxin represses stomatal development in dark-grown seedlings via Aux/IAA proteins.  

PubMed

Stomatal development is tightly regulated through internal and external factors that are integrated by a complex signalling network. Light represents an external factor that strongly promotes stomata formation. Here, we show that auxin-resistant aux/iaa mutants, e.g. axr3-1, exhibit a de-repression of stomata differentiation in dark-grown seedlings. The higher stomatal index in dark-grown axr3-1 mutants when compared with the wild type is due to increased cell division in the stomatal lineage. Excessive stomata in dark-grown seedlings were also observed in mutants defective in auxin biosynthesis or auxin perception and in seedlings treated with the polar auxin transport inhibitor NPA. Consistent with these findings, exogenous auxin repressed stomata formation in light-grown seedlings. Taken together, these results indicate that auxin is a negative regulator of stomatal development in dark-grown seedlings. Epistasis analysis revealed that axr3-1 acts genetically upstream of the bHLH transcription factors SPCH, MUTE and FAMA, as well as the YDA MAP kinase cascade, but in parallel with the repressor of photomorphogenesis COP1 and the receptor-like protein TMM. The effect of exogenous auxin required the ER family of leucine-rich repeat receptor-like kinases, suggesting that auxin acts at least in part through the ER family. Expression of axr3-1 in the stomatal lineage was insufficient to alter the stomatal index, implying that cell-cell communication is necessary to mediate the effect of auxin. In summary, our results show that auxin signalling contributes to the suppression of stomatal differentiation observed in dark-grown seedlings. PMID:25063454

Balcerowicz, Martin; Ranjan, Aashish; Rupprecht, Laura; Fiene, Gabriele; Hoecker, Ute

2014-08-01

111

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

112

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

113

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.

114

Diagenesis and reservoir quality of the Upper Mississippian Aux Vases Sandstone, Illinois Basin  

USGS Publications Warehouse

Conventional reservoir quality data for more than 300 wells provided by the Illinois and Indiana state geological surveys were analyzed to determine the factors governing porosity and permeability in the Upper Mississippian Aux Vases Sandstone, an important hydrocarbon-producing unit in the Illinois Basin. In addition, approximately 150 samples of the Aux Vases Sandstone were collected for mineralogical and geochemical analysis to reconstruct the burial and diagenetic history and to establish the timing of diagenesis relative to the entrapment of hydrocarbons. One aspect of the study involved linking inorganic and organic diagenesis to late Paleozoic tectonism and hydrothermal fluid-flow events in the region.

Pitman, Janet K.; Henry, Mitchell E.; Leetaru, Hannes E.

1999-01-01

115

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

116

The "Vsoil Platform" : a tool to integrate the various physical, chemical and biological processes contributing to the soil functioning at the local scale.  

NASA Astrophysics Data System (ADS)

Models describing the soil functioning are valuable tools for addressing challenging issues related to agricultural production, soil protection or biogeochemical cycles. Coupling models that address different scientific fields is actually required in order to develop numerical tools able to simulate the complex interactions and feed-backs occurring within a soil profile in interaction with climate and human activities. We present here a component-based modelling platform named "VSoil", that aims at designing, developing, implementing and coupling numerical representation of biogeochemical and physical processes in soil, from the aggregate to the profile scales. The platform consists of four softwares, i) Vsoil_Processes dedicated to the conceptual description of processes and of their inputs and outputs, ii) Vsoil_Modules devoted to the development of numerical representation of elementary processes as modules, iii) Vsoil_Models which permits the coupling of modules to create models, iv) Vsoil_Player for the run of the model and the primary analysis of results. The platform is designed to be a collaborative tool, helping scientists to share not only their models, but also the scientific knowledge on which the models are built. The platform is based on the idea that processes of any kind can be described and characterized by their inputs (state variables required) and their outputs. The links between the processes are automatically detected by the platform softwares. For any process, several numerical representations (modules) can be developed and made available to platform users. When developing modules, the platform takes care of many aspects of the development task so that the user can focus on numerical calculations. Fortran2008 and C++ are the supported languages and existing codes can be easily incorporated into platform modules. Building a model from available modules simply requires selecting the processes being accounted for and for each process a module. During this task, the platform displays available modules and checks the compatibility between the modules. The model (main program) is automatically created when compatible modules have been selected for all the processes. A GUI is automatically generated to help the user providing parameters and initial situations. Numerical results can be immediately visualized, archived and exported. The platform also provides facilities to carry out sensitivity analysis. Parameters estimation and links with databases are being developed. The platform can be freely downloaded from the web site (http://www.inra.fr/sol_virtuel/) with a set of processes, variables, modules and models. However, it is designed so that any user can add its own components. Theses adds-on can be shared with co-workers by means of an export/import mechanism using the e-mail. The adds-on can also be made available to the whole community of platform users when developers asked for. A filtering tool is available to explore the content of the platform (processes, variables, modules, models).

Lafolie, François; Cousin, Isabelle; Mollier, Alain; Pot, Valérie; Moitrier, Nicolas; Balesdent, Jérome; bruckler, Laurent; Moitrier, Nathalie; Nouguier, Cédric; Richard, Guy

2014-05-01

117

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

E-print Network

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

Paris-Sud XI, Université de

118

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

Microsoft Academic Search

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

Jean-François Nivet

1994-01-01

119

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

120

Recherche d'effets quantitatifs associs aux gnotypes AA et Aa un locus  

E-print Network

Recherche d'effets quantitatifs associés aux génotypes AA et Aa à un locus marqueur avec dominance - Lorsqu'on identifie par épreuve de descendance les individus de génotype AA et Aa à un locus marqueur associated with the AA and Aa genotypes at a marker locus with complete dominance : optimization of progeny

Paris-Sud XI, Université de

121

URRAQUE, BON AMOUR ET AUTRES PETITS NOMS CHARMANTS (observations littraires et historiques aux strophes 910 949  

E-print Network

1 URRAQUE, BON AMOUR ET AUTRES PETITS NOMS CHARMANTS (observations littéraires et historiques aux). Les langues néo-latines (Déc. 2005). « Urraque, bon amour et autres petits noms charmants ». P. 5 Amour et le replace dans l'architecture narrative du Livre : le narrateur protagoniste continue d

Paris-Sud XI, Université de

122

Des amnagements pitons pour un accs plus attractif aux transports publics ?  

E-print Network

­ tramway ­ urbanisme ­ aménagement ­ marche à pied Cette communication s'inscrit dans le champ des'arrêt, des conditions permettant aux transports collectifs d'offrir une alternative crédible à la voiture des modes actifs,... - autant de dispositifs, parmi d'autres, susceptibles d'augmenter la part modale

Paris-Sud XI, Université de

123

La transposition du concept de trahison interpersonnelle aux relations entre marques et clients  

E-print Network

1 La transposition du concept de trahison interpersonnelle aux relations entre marques et clients Cette communication constitue le premier résultat d'un programme de recherche sur la trahison relations entre marques et clients : réflexions conceptuelles et étude exploratoire Résumé Cette recherche

Paris-Sud XI, Université de

124

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

E-print Network

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

Boyer, Edmond

125

DE L'ANALYSE CONOMIQUE DU CRIME AUX NOUVELLES CRIMINOLOGIES ANGLO-SAXONNES?  

E-print Network

DE L'ANALYSE �CONOMIQUE DU CRIME AUX NOUVELLES CRIMINOLOGIES ANGLO-SAXONNES? Les origines sécurité partout dans le monde. L'article pose la question de l'origine des nouvelles criminologies qui ins conception du criminel comme acteur rationnel. Aujourd'hui, les criminologies influentes dans le monde anglo

Paris-Sud XI, Université de

126

Vers un modle d'indexation smantique adapt aux dossiers mdicaux de patients  

E-print Network

Vers un modèle d'indexation sémantique adapté aux dossiers médicaux de patients Duy Dinh, Lynda (2010) 325-336" #12;Duy Dinh, Lynda Tamine 1. Introduction Les systèmes d'information médicaux ont connu

Boyer, Edmond

127

Cloning and expression analysis of novel Aux/IAA family genes in Gossypium hirsutum  

Technology Transfer Automated Retrieval System (TEKTRAN)

Members of the auxin/indole-3-acetic acid (Aux/IAA) gene family encode proteins to mediate the responses of auxin gene expression and to regulate various aspects of plant morphological development. In this paper, we report the identification of nine cDNAs that contain complete open reading frame (OR...

128

Théorie du producteur en présence de rationnements : application aux quotas laitiers en Europe  

Microsoft Academic Search

[eng] This paper develops a model to analyze the producer behavior under rationing from the behavior without constraint. This model is applied to milk quotas in EEC. [fre] Le comportement d'offre en présence de rationnements est décrit sur la base du comportement sans contrainte. Ce modèle est appliqué aux quotas laitiers en Europe.

Louis P. Mahe; Hervé Guyomard

1990-01-01

129

Contribution l'analyse des dterminants du comportement d'exercice des porteurs de stock options  

E-print Network

1 Contribution à l'analyse des déterminants du comportement d'exercice des porteurs de stock déterminants du comportement des salariés quant à l'exercice de leurs stock options, en mettant en lumière de'exercice de stock options dans 12 multinationales cotées aux Etats Unis. Nos résultats sont cohérents avec les

Paris-Sud XI, Université de

130

AUX/LAX Genes Encode a Family of Auxin Influx Transporters That Perform Distinct Functions during Arabidopsis Development[C][W  

PubMed Central

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

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

2012-01-01

131

Identification and Analyses of AUX-IAA target genes controlling multiple pathways in developing fiber cells of Gossypium hirsutum L  

PubMed Central

Technological development led to an increased interest in systems biological approaches in plants to characterize developmental mechanism and candidate genes relevant to specific tissue or cell morphology. AUX-IAA proteins are important plant-specific putative transcription factors. There are several reports on physiological response of this family in Arabidopsis but in cotton fiber the transcriptional network through which AUX-IAA regulated its target genes is still unknown. in-silico modelling of cotton fiber development specific gene expression data (108 microarrays and 22,737 genes) using Algorithm for the Reconstruction of Accurate Cellular Networks (ARACNe) reveals 3690 putative AUX-IAA target genes of which 139 genes were known to be AUX-IAA co-regulated within Arabidopsis. Further AUX-IAA targeted gene regulatory network (GRN) had substantial impact on the transcriptional dynamics of cotton fiber, as showed by, altered TF networks, and Gene Ontology (GO) biological processes and metabolic pathway associated with its target genes. Analysis of the AUX-IAA-correlated gene network reveals multiple functions for AUX-IAA target genes such as unidimensional cell growth, cellular nitrogen compound metabolic process, nucleosome organization, DNA-protein complex and process related to cell wall. These candidate networks/pathways have a variety of profound impacts on such cellular functions as stress response, cell proliferation, and cell differentiation. While these functions are fairly broad, their underlying TF networks may provide a global view of AUX-IAA regulated gene expression and a GRN that guides future studies in understanding role of AUX-IAA box protein and its targets regulating fiber development. PMID:24497725

Nigam, Deepti; Sawant, Samir V

2013-01-01

132

6, 1131711355, 2006 Contribution of fungi  

E-print Network

ACPD 6, 11317­11355, 2006 Contribution of fungi to biogenic aerosols W. Elbert et al. Title Page Chemistry and Physics Discussions Contribution of fungi to primary biogenic aerosols in the atmosphere Contribution of fungi to biogenic aerosols W. Elbert et al. Title Page Abstract Introduction Conclusions

Paris-Sud XI, Université de

133

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

134

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

135

COURBES D'IONISATION DANS LE KRYPTON ET LE XNON PURS RELATIVES AUX RAYONS 03B1 DU POLONIUM  

E-print Network

COURBES D'IONISATION DANS LE KRYPTON ET LE X�NON PURS RELATIVES AUX RAYONS 03B1 DU POLONIUM Par R polonium dans le krypton et le xénon purs. Les parcours trouvés sont : RKr = 3,03 ± 0,01 cm; RXe = 2,17 ± 0 xénon purs relatives aux rayons a du p'olonium. - En utilisant un appareil spécialement construit pour

Paris-Sud XI, Université de

136

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

E-print Network

L-105 Sections efficaces absolues de l'ozone à 298 K aux longueurs d'onde de la lampe au mercure aofit 1984, revise le 3 decembre, accepte le 13 decembre 1984) Résumé. 2014 En raison de l'importance que présente la connaissance des sections efficaces de l'ozone aux longueurs d'onde de la lampe au

Boyer, Edmond

137

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

138

The aux1 gene of the Ri plasmid is sufficient to confer auxin autotrophy in tobacco BY-2 cells.  

PubMed

Tobacco (Nicotiana tabacum) Bright Yellow-2 (BY-2) cells are rapidly proliferating meristematic cells that require auxin for culture in vitro. We have established several transgenic BY-2 cell lines that carry the T-DNA of Agrobacterium rhizogenes 15834, which harbors an agropine-type root-inducing (Ri) plasmid. Two of these lines, BYHR-3 and BYHR-7, were used to test the role of auxin in the proliferation of plant cells. The lines grew rapidly in Linsmaier-Skoog (LS) medium lacking auxin and other phytohormones. The TR-DNA, containing the aux1 (tryptophan monooxygenase) and aux2 (indoleacetamide hydrolase) genes, was present in the genomes of both transgenic lines, whereas the TL-DNA, containing the rolA, B, C and D genes, was present in the genome of BYHR-7 but not BYHR-3. Since the introduction of the rolABCD genes alone did not affect the auxin requirement of BY-2 cells, the aux1 and aux2 genes, but not the rolABCD genes, appear to be relevant to the auxin autotrophy of these transgenic lines. Furthermore, the overexpression of aux1 allowed BY-2 cells to grow rapidly in the absence of auxin, suggesting the existence in plant cells of an unidentified gene whose product is functionally equivalent or similar to that of aux2 of the Ri plasmid. PMID:18986729

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

2009-05-01

139

Diffusion de neutrons aux petits angles : application à l'étude des macromolécules biologiques en solution  

NASA Astrophysics Data System (ADS)

La diffusion de neutrons aux petits angles (DNPA) permet de sonder les propriétés statiques de la matière sur une échelle spatiale allant de quelques dixièmes à quelques dizaines de nanomètres. Cette technique est ainsi particulièrement bien adaptée à l'étude des macromolécules en solution. Il est possible d'accéder à des grandeurs moyennes qui caractérisent la conformation qu'adoptent les macromolécules ou leurs interactions thermodynamiques. Le cours expose à des non spécialistes les différentes grandeurs mesurables et les méthodes à utiliser pour y accéder. En particulier sont abordées: 1) les mesures effectuées dans la limite du vecteur de diffusion nul qui sont liées aux fluctuations de concentration; 2) les notions de facteur de forme, de facteur de structure dots 3) les différentes façon de jouer avec le contraste. Les notions introduites sont illustrées par des exemples didactiques empruntés à la littérature et concernant des macromolécules biologiques en solution.

Lairez, D.; Pelta, J.

2005-11-01

140

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

E-print Network

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

Di Girolami, Cristina

141

"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

142

COURBE D'IONISATION DANS L'HYDROGNE PUR RELATIVE AUX RAYONS ALPHA DU POLONIUM  

E-print Network

COURBE D'IONISATION DANS L'HYDROG�NE PUR RELATIVE AUX RAYONS ALPHA DU POLONIUM Par MM. FR�D�RIC rayons 03B1 du polonium dans l'hydrogène pur. On donne17,30 ± 0,03 cm pour le parcours extrapolé dans l utilisé un support de source permettant de couvrir le polonium avec un écran d'aluminium très mince et

Paris-Sud XI, Université de

143

Actualit scientifiqueActualit scientifique L'ADN : de la biologie aux  

E-print Network

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

Ingrand, François

144

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

145

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

146

CONDUCTIBILIT THERMIQUE DE GRAPHITE QUASI MONOCRISTALLIN ET EFFETS D'IRRADIATION AUX NEUTRONS  

E-print Network

951. CONDUCTIBILIT� THERMIQUE DE GRAPHITE QUASI MONOCRISTALLIN ET EFFETS D'IRRADIATION AUX NEUTRONS. Résumé. 2014 On a mesuré entre 6 et 300 °K la conductibilité thermique K d'un graphite pyrolytique recuit graphite est très bien organisé et très voisin du monocristal. Les résultats obtenus pour K montrent un

Paris-Sud XI, Université de

147

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

148

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

149

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

150

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

PubMed Central

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

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

2015-01-01

151

Contributions to environmental mechanics: Introduction  

NASA Astrophysics Data System (ADS)

In the second half of the 20th century, environmental mechanics developed from a collection of loosely connected principles and techniques t o a coherent quantitative treatment of flow and transport in the soil-plant-atmosphere continuum. John Philip was in many respects the life and soul of this adventure . He contributed foremost to the physics of water in unsaturated soils, but also to micrometeorology and physical ecology. In this introductory chapter we briefly review how his contributions influenced and are related to the activities of his colleagues and provide an overview of the present status of theory of soil water movement. We also indicate how the various contributions to this volume fit in this context. We start with a discussion of the nature, foundation, and application of the Richards equation, with emphasis on the dominant role of John Philip in finding analytical solutions of this equation. This is followed by a discussion of various developments beyond the Richards equation: multiphase flow, simultaneous transport of water and heat, flow of water in soils subject to swelling-shrinkage, transport of solutes in unsaturated soils, and flow and transport processes at various scales in space and time. The varied contributions of John Philip to micrometeorology and physical ecology are also reviewed briefly. In the concluding section, some challenges for environmental mechanics are indicated.

Raats, Peter A. C.; Smiles, David E.; Warrick, Arthur W.

152

Charm contribution to bulk viscosity  

E-print Network

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

M. Laine; Kiyoumars A. Sohrabi

2014-10-24

153

Thomas Young's contributions to geometrical optics.  

PubMed

In addition to his work on physical optics, Thomas Young (1773-1829) made several contributions to geometrical optics, most of which received little recognition in his time or since. We describe and assess some of these contributions: Young's construction (the basis for much of his geometric work), paraxial refraction equations, oblique astigmatism and field curvature, and gradient-index optics. PMID:21214628

Atchison, David A; Charman, W Neil

2011-07-01

154

Heavy top renormalon contribution to fermion propagators  

E-print Network

We study resummed perturbative contributions due to a heavy top-quark. These renormalon contributions are evaluated for fermion propagators. Results for the top-quark width are given. Estimates of non-perturbative uncertainties are made on the \\rho-parameter using different schemes of dealing with the Landau-pole. For the physical top-quark mass the effects are negligible.

D. Bettinelli; J. J. van der Bij

2012-06-01

155

Quantifying the contributions to stratospheric ozone changes from ozone  

E-print Network

Quantifying the contributions to stratospheric ozone changes from ozone depleting substances Chemistry and Physics Quantifying the contributions to stratospheric ozone changes from ozone depleting by different combinations of long-lived Greenhouse Gases (GHGs) and Ozone Depleting Substances (ODSs

Wirosoetisno, Djoko

156

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

157

Contributed Paper Assessing Citizen Contributions to Butterfly  

E-print Network

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

Illinois at Chicago, University of

158

COMPLEMENTS SUR LES SOUS-TORES D'UN PRESCHEMA EN GROUPES. APPLICATION AUX  

E-print Network

sous-sch´ema ferm´e de S d´efini par un id´eal de carr´e nul, G un S-pr´esch´ema en groupes, H0 un sous´ema de S d´efini par un faisceau d'id´eaux localement nilpotent, G un S-pr´esch´ema en groupes, plat etEXPOS´E XV COMPL´EMENTS SUR LES SOUS-TORES D'UN PR´ESCH´EMA EN GROUPES. APPLICATION AUX GROUPES

Stein, William

159

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

160

Is It Physical Education or Physical Activity?  

ERIC Educational Resources Information Center

With heightened attention on childhood obesity prevention efforts, there seems to be some confusion between the terms "physical education" and "physical activity." Often the words are used interchangeably but they differ in important ways. Understanding the difference between the two is critical to understanding why both contribute to the…

Strategies: A Journal for Physical and Sport Educators, 2005

2005-01-01

161

Morphological variations in AuxSiy nanostructures under variable pressure and annealing conditions  

NASA Astrophysics Data System (ADS)

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

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

2014-11-01

162

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, ...

163

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

164

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

E-print Network

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

Paris-Sud XI, Université de

165

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

166

Metalophilic interaction in gold halide: quantum chemical study of AuX (X?=?F-At).  

PubMed

Quantum chemical calculations of the structures, stabilities, and metalophilic interactions of AuX halides (X?=?F-At) at the CCSD(T) theoretical level with extended basis sets were performed. Natural bond orbital analysis showed that the present gold-halide metalophilic interactions mainly resulted from the overlap of an sp hybrid on halogen and a 6s6p5d hybrid on the Au atom. Analysis of electron density deformation showed a pronounced charge accumulation in the middle of the region between heavier X and Au, and clearly suggested the formation of covalent bond. Topological analysis of the Laplacian and total electronic energy densities at bond critical points showed the "intermediate type" character of gold-halide metalophilic interactions. Electron localization function showed the increased covalency from X?=?F to X?=?At. PMID:24590459

Li, Xinying

2014-05-01

167

Functional expression and characterization of Arabidopsis ABCB, AUX 1 and PIN auxin transporters in Schizosaccharomyces pombe.  

PubMed

Heterologous expression systems based on tobacco BY-2 cells, Arabidopsis cell cultures, Xenopus oocytes, Saccharomyces cerevisiae, and human HeLa cells have been used to express and characterize PIN, ABCB (PGP), and AUX/LAX auxin transporters from Arabidopsis. However, no single system has been identified that can be used for effective comparative analyses of these proteins. We have developed an accessible Schizosaccharomyces pombe system for comparative studies of plant transport proteins. The system includes knockout mutants in all ABC and putative auxin transport genes and Gateway((R))-compatible expression vectors for functional analysis and subcellular localization of recombinant proteins. We expressed Arabidopsis ABCB1 and ABCB19 in mam1pdr1 host lines under the inducible nmt41 promoter. ABCB19 showed a higher (3)H-IAA export activity than ABCB1. Arabidopsis PIN proteins were expressed in a mutant lacking the auxin effluxer like 1 (AEL1) gene. PIN1 showed higher activity than PIN2 with similar protein expression levels. Expression of AUX1 in a permease-deficient vat3 mutant resulted in increased net auxin uptake activity. Finally, ABCB4 expressed in mam1pdr1 displayed a concentration-dependent reversal of (3)H-IAA transport that is consistent with its observed activity in planta. Structural modelling suggests that ABCB4 has three substrate interaction sites rather than the two found in ABCB19, thus providing a rationale for the observed substrate activation. Taken together, these results suggest that the S. pombe system described here can be employed for comparative analyses and subsequent structural characterizations of plant transport proteins. PMID:19309458

Yang, Haibing; Murphy, Angus S

2009-07-01

168

Appendix: Additional Contributions  

NASA Astrophysics Data System (ADS)

The number of contributions to the Symposium was so high that only the review and invited talks have found place, in the form of articles, in this volume. This Appendix lists all these additional contributions (oral and posters) which are not present as articles. The abstracts of all contributions were published in a booklet produced by the Local Organizing Committee and are available at the SAO/NASA Astrophysics Data System (ADS). More information on these contributions (PowerPoint presentations and/or articles) have been made public in the Internet web site of the conference (http://cab.inta-csic.es/molecular_universe/).

2011-12-01

169

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  

ERIC Educational Resources Information Center

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…

Maron, Marta Katarzyna

2011-01-01

170

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

171

Rsultats des lections aux C.A.P. de l'IRD -Scrutin du 23 octobre 2008 C.A.P. N 1 : Directeurs de recherche  

E-print Network

Résultats des élections aux C.A.P. de l'IRD - Scrutin du 23 octobre 2008 C.A.P. N° 1 : Directeurs-François AGNESE (FSU) Odile HOFFMANN 45 #12;Résultats des élections aux C.A.P. de l'IRD - Scrutin du 23 octobre 2008 C.A.P. N° 1 : Directeurs de recherche Nombre de Sièges à pourvoir (NS) : DR0 = 1 (pas de

172

Minority Contributions to Science, Engineering, and Medicine.  

ERIC Educational Resources Information Center

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

Funches, Peggy; And Others

173

Engineering contributions to the life sciences  

Microsoft Academic Search

This paper discusses the contributions that physicians have made to the physical sciences. Some of the physicians mentioned by the author are William Gilbert who gave the first accurate treatise on magnetism, Thomas Young who gave us Young's modulus was also the first to discover the interference of light waves, Luigi Galvani who started the study on current electricity and

L. A. Geddes

2006-01-01

174

Modelisation de la diffusion sur les surfaces metalliques: De l'adatome aux processus de croissance  

NASA Astrophysics Data System (ADS)

Cette these est consacree a l'etude des processus de diffusion en surface dans le but ultime de comprendre, et de modeliser, la croissance d'une couche mince. L'importance de bien mai triser la croissance est primordiale compte tenu de son role dans la miniaturisation des circuits electroniques. Nous etudions ici les surface des metaux nobles et de ceux de la fin de la serie de transition. Dans un premier temps, nous nous interessons a la diffusion d'un simple adatome sur une surface metallique. Nous avons, entre autres, mis en evidence l'apparition d'une correlation entre evenements successifs lorsque la temperature est comparable a la barriere de diffusion, i.e., la diffusion ne peut pas etre associee a une marche aleatoire. Nous proposons un modele phenomenologique simple qui reproduit bien les resultats des simulations. Ces calculs nous ont aussi permis de montrer que la diffusion obeit a la loi de Meyer-Neldel. Cette loi stipule que, pour un processus active, le prefacteur augmente exponentiellement avec la barriere. En plus, ce travail permet de clarifier l'origine physique de cette loi. En comparant les resultats dynamiques aux resultats statiques, on se rend compte que la barriere extraite des calculs dynamiques est essentiellement la meme que celle obtenue par une approche statique, beaucoup plus simple. On peut donc obtenir cette barriere a l'aide de methodes plus precises, i.e., ab initio, comme la theorie de la fonctionnelle de la densite, qui sont aussi malheureusement beaucoup plus lourdes. C'est ce que nous avons fait pour plusieurs systemes metalliques. Nos resultats avec cette derniere approche se comparent tres bien aux resultats experimentaux. Nous nous sommes attardes plus longuement a la surface (111) du platine. Cette surface regorge de particularites interessantes, comme la forme d'equilibre non-hexagonale des i lots et deux sites d'adsorption differents pour l'adatome. De plus, des calculs ab initio precedents n'ont pas reussi a confirmer la forme d'equilibre et surestiment grandement la barriere. Nos calculs, plus complets et dans un formalisme mieux adapte a ce genre de probleme, predisent correctement la forme d'equilibre, qui est en fait due a un relachement different du stress de surface aux deux types de marches qui forment les cotes des i lots. Notre valeur pour la barriere est aussi fortement diminuee lorsqu'on relaxe les forces sur les atomes de la surface, amenant le resultat theorique beaucoup plus pres de la valeur experimentale. Nos calculs pour le cuivre demontre en effet que la diffusion de petits i lots pendant la croissance ne peut pas etre negligee dans ce cas, mettant en doute la valeur des interpretations des mesures experimentales. (Abstract shortened by UMI.)

Boisvert, Ghyslain

175

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

176

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

PubMed Central

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

177

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

178

Second International Conference on Late Roman Coarse Wares; Aix-en-Provence, 2005 (Actes paratre aux British Archaeological Reports)  

E-print Network

paraître aux British Archaeological Reports) Les céramiques communes de l'Antiquité tardive en Gaule désormais bien connues et régulièrement attestées sur de nombreux sites, c'est aussi du Nord que provient début du VIIIe s. sur quelques sites portuaires, essentiellement à Marseille, l'équipement domestique

Paris-Sud XI, Université de

179

Le Lay Y.-F.1 2008. "Le Mississippi d'Elise Reclus : donner du sens aux eaux  

E-print Network

1 Le Lay Y.-F.1 2008. "Le Mississippi d'Elisée Reclus : donner du sens aux eaux courantes". Cahiers Louisiane approximativement deux ans et est fasciné par le Mississippi. En 1854, celui-ci est en cours d-clés : Elisée Reclus, Mississippi, fleuve, eau, histoire, aménagement, imaginaire Abstract Reclus resided

Paris-Sud XI, Université de

180

Etude du dopage de l'arsniure de gallium par la technique d'pitaxie en phase vapeur aux organomtalliques  

E-print Network

405 Etude du dopage de l'arséniure de gallium par la technique d'épitaxie en phase vapeur aux 14 avril 1982) Résumé. 2014 Des couches d'arséniure de gallium épitaxiées par la technique de. Abstract. 2014 The doping of gallium arsenide layers grown by the trimethylgallium/arsine method has been

Paris-Sud XI, Université de

181

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.

182

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

183

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

NASA Astrophysics Data System (ADS)

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 an overall production of 29 iguanodons skeletons. Referring to the available data at the Natural Sciences Museum of Brussels where the found skeletons are exhibited, one does not know the degree of depletion of the deposit after the extraction. A feasibility study (Tshibangu and Dagrain 1998) showed then the need to drill 4 exploration wells of 400 m depth with different objectives: to evaluate the chance of finding more fossils, understanding how and when the geological formations moved down, and testing a seismic geophysical technique for ground imaging. The typical geological formations concerned are: chalk, limestone, conglomerate, clays, and layers of silex nodules. In October 2002 the workings started with a completely cored well (the Number 3) using the PQ wireline technique. During operations, different parameters have been recorded: rate of penetration, core recovery and a brief core description. Some problems have been encountered when crossing silex stones contained in a clayey matrix; and this paper gives some interpretations in terms of the relationship between the lithology and the drilling performances.

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

184

Canalization of auxin flow by Aux/IAA-ARF-dependent feedback regulation of PIN polarity  

PubMed Central

Plant development is characterized by a profound ability to regenerate and form tissues with new axes of polarity. An unsolved question concerns how the position within a tissue and cues from neighboring cells are integrated to specify the polarity of individual cells. The canalization hypothesis proposes a feedback effect of the phytohormone auxin on the directionality of intercellular auxin flow as a means to polarize tissues. Here we identify a cellular and molecular mechanism for canalization. Local auxin application, wounding, or auxin accumulation during de novo organ formation lead to rearrangements in the subcellular polar localization of PIN auxin transport components. This auxin effect on PIN polarity is cell-specific, does not depend on PIN transcription, and involves the Aux/IAA-ARF (indole-3-acetic acid-auxin response factor) signaling pathway. Our data suggest that auxin acts as polarizing cue, which links individual cell polarity with tissue and organ polarity through control of PIN polar targeting. This feedback regulation provides a conceptual framework for polarization during multiple regenerative and patterning processes in plants. PMID:17043314

Sauer, Michael; Balla, Jozef; Luschnig, Christian; Wi?niewska, Justyna; Reinöhl, Vilém; Friml, Ji?í; Benková, Eva

2006-01-01

185

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

186

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.

187

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

188

Stueckelberg and Molecular Physics  

NASA Astrophysics Data System (ADS)

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

Lacki, Jan

189

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

PubMed Central

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

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

2013-01-01

190

The Physical Tourist  

Microsoft Academic Search

We provide a tour of Leipzig, one of the cultural centers of Germany that contributed a significant chapter in the history\\u000a of physics. In the nineteenth century the city and University of Leipzig were home to one of the oldest physical institutes\\u000a in Germany, and in the late 1920s the arrival of Werner Heisenberg (1901-1976), Peter Debye (1884-1966), and Friedrich

Wolfgang Schreier; Karl-Heinz Schlote

2008-01-01

191

Stueckelberg and Molecular Physics  

Microsoft Academic Search

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

Jan Lacki

2009-01-01

192

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

193

Avicenna's contribution to cardiology.  

PubMed

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 16(th) 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

194

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

195

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

ERIC Educational Resources Information Center

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

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

2014-01-01

196

Evaluating auxin distribution in tomato (Solanum lycopersicum) through an analysis of the PIN and AUX/LAX gene families.  

PubMed

The temporal and spatial control of auxin distribution has a key role in the regulation of plant growth and development, and much has been learnt about the mechanisms that influence auxin pools and gradients in vegetative tissues, particularly in Arabidopsis. For example polar auxin transport, mediated by PIN and AUX/LAX proteins, is central to the control of auxin distribution. In contrast, very little information is known about the dynamics of auxin distribution and the molecular basis of its transport within and between fruit tissues, despite the fact that auxin regulates many aspects of fruit development, which include fruit formation, expansion, ripening and abscission. In addition, functional information regarding the key regulators of auxin fluxes during both vegetative and reproductive development in species other than Arabidopsis is scarce. To address these issues, we have investigated the spatiotemporal distribution of auxin during tomato (Solanum lycopersicum) fruit development and the function of the PIN and AUX/LAX gene families. Differential concentrations of auxin become apparent during early fruit growth, with auxin levels being higher in internal tissues than in the fruit pericarp and the pattern of auxin accumulation depended on polar transport. Ten tomato PIN (SlPIN1 to 10) and five AUX/LAX (SlLAX1 to 5) genes were identified and found to display heterogeneous expression patterns, with tissue and developmental-stage specificity. RNAi-mediated co-silencing of SlPIN4 and SlPIN3 did not affect fruit development, which suggested functional redundancy of PIN proteins, but did lead to a vegetative phenotype, and revealed a role for these genes in the regulation of tomato shoot architecture. PMID:22211518

Pattison, Richard J; Catalá, Carmen

2012-05-01

197

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

198

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

199

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

200

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

201

@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

202

Jesuits' Contribution to Meteorology.  

NASA Astrophysics Data System (ADS)

Starting in the middle of the nineteenth century, as part of their scientific tradition, Jesuits founded a considerable number of meteorological observatories throughout the world. In many countries, Jesuits established and maintained the first meteorological stations during the period from 1860 to 1950. The Jesuits' most important contribution to atmospheric science was their pioneer work related to the study and forecast of tropical hurricanes. That research was carried out at observatories of Belén (Cuba), Manila (Philippines), and Zikawei (China). B. Viñes, M. Decheyrens, J. Aigué, and C.E. Deppermann stood out in this movement.

Udías, Agustín

1996-10-01

203

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

204

MILESTONES IN SOIL PHYSICS  

Technology Transfer Automated Retrieval System (TEKTRAN)

This special issue of “Soil Science“ celebrates the enormous accomplishments made during the past century or more in the field of soil science, including some of the key articles published in Soil Science during its 90 years of existence. In this article, we focus on the contributions in soil physic...

205

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

206

MILESTONES IN SOIL PHYSICS  

Microsoft Academic Search

This special issue of Soil Science celebrates the enormous accomplish- ments made during the past century or more in the field of soil science, including some of the key articles published in Soil Science during its 90 years of existence. In this article, we focus on the contributions in soil physics, exemplified by the articles of Willard Gardner (1919) and

Peter A. C. Raats; Martinus Th. van Genuchten

2006-01-01

207

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

208

Physical Resources Physical Resources  

E-print Network

8.­8.7). Space Utilization The Capital Needs Analysis (CNA) and Informa- tion Technology and upgrade of facilities and technology. We will probably never have all the lab or classroom space; all and analysis of the requirements for Standard 8. It considers institutional facilities, equipment, and physical

Seamons, Kent E.

209

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 ...

Mr. Jolley

2005-10-29

210

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

211

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

SciTech Connect

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

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

2008-01-15

212

Reports | Physical Sciences in Oncology  

Cancer.gov

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

213

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.

214

The physics of unphysical pions  

NASA Astrophysics Data System (ADS)

This article is a tribute to Hans Weidenmüller. Although our interests have drifted apart over the years, I still fondly remember the time when we both worked on chaotic phenomena in nuclei. Hans always wanted to see the general lesson for other areas of physics drawn out of the special case in nuclear physics, an attitude we both share. Here is an illustration that nuclear physics still has such lessons to offer. It comes from scattering theory to which Hans has contributed so much. The special application is to 0° charge-exchange reactions and their relation to pion physics as well as to neutrino and muon physics.

Ericson, T. E. O.

1993-07-01

215

SEARCHING FOR NEW PHYSICS: CONTRIBUTIONS TO LEP AND THE LHC  

E-print Network

for their influence was core to my development. My father, Morris, always the scientist, instilled my curiosity education, and I am grateful for that. Dylan, my older brother, pursued his dreams with sacrifice and dedication that I have always admired. A few key teachers and professors have had great influence on my

Fernandez, Thomas

216

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

NASA Astrophysics Data System (ADS)

We address a current question in econophysics: Are fluctuations in economic indices correlated? To this end, we analyze 1-minute data on a stock index, the Standard and Poor index of the 500 largest stocks. We extend the 6-year data base studied by Mantegna and Stanley by including the 13 years 1984-1996 inclusive, with a recording frequency of 15 seconds. The total number of data points in this 13 years period exceed 4.5 million, which allows for a very detailed statistical analysis. We find that the fluctuations in the volatility are correlated, and that the correlations are well described by a power law. We also briefly describe some recent scaling results in economics, specifically some surprising features that appear to be common to the growth rates of business firms, countries, research budgets, and bird populations.

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

1999-09-01

217

Contribution of resonance tunneling of molecule to physical observables  

E-print Network

Probabilities of resonant tunneling through a potential barrier are compared for a rigid molecule and an excited molecule. It is shown that the resonance spectrum is mainly governed by the transmission resonance spectrum of the rigid molecule. Analytical expressions for the probability for the tunneling of the rigid molecule through a barrier allow resonance-spectrum-averaged observables, including quantum diffusion, to be estimated.

P. M. Krassovitskiy; F. M. Pen'kov

2014-12-12

218

Soil Physics  

NASA Astrophysics Data System (ADS)

Now in its third edition, this textbook gives a comprehensive account of soil physics with emphasis on field applications for students and research workers engaged in water resources studies, soil sciences, and plant sciences. The authors have added chapters on soil erosion, conservation, and the role of soil in affecting water quality to this new edition. The book gives an account of how water influences the structure and strength of soil; how plants absorb water from soils; how water from rain and irrigation enters the soil and flows through it to contribute to stream flow and flow in artificial drains; how soluble salts and chemical pollutants are transported; how soils are eroded by water and wind; and how the evaporation rate from the land surface is influenced by soil water supply, the nature of the plant cover and the evaporative power of the atmosphere. This book will be useful to students and research workers in environmental sciences, hydrology, agriculture, soil science, and civil engineering.

Marshall, T. J.; Holmes, J. W.; Rose, C. W.

1996-06-01

219

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

220

Radiation Oncology Physics and Medical Physics Education  

NASA Astrophysics Data System (ADS)

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

Bourland, Dan

2011-10-01

221

Physics Formulary  

NSDL National Science Digital Library

Provided by physicist Johan Wevers and written at the undergraduate to postgraduate level, the Physics Formulary provides 108 pages of physics formulas. According to the authors, the Formulary âÂÂis intended to be a short reference for anyone who works with physics and often needs to look up equations.â The Formulary is available in a number of formats, including Adobe PDF, and presents formulas relating all major areas of physics including mechanics, electricity & magnetism, relativity, oscillations, waves, optics, statistical physics, thermodynamics, transport phenomena, quantum physics, plasma physics, solid state physics, theory of groups, nuclear physics, quantum field theory & particle physics, and astrophysics. This is a great resource for students and teachers of both introductory and advanced physics.

Wevers, Johan

2007-04-18

222

Diffusion acceleree apres irradiation aux neutrons A 20K dans les alliages Fe-Co et Fe-Co-X (X = Mn, V, Ti)  

Microsoft Academic Search

Plusieurs alliages de type B2: Fe 50 at %—Co 50 at %, Fe 49 at %—Co 49 at %—X 2 at % (X = Mn, V, Ti) ont été irradiés aux neutrons de fission (E > 1 MeV) à la temperature de l'hydrogène liquide. Les recuits isochrones de l'excès de résistivité produit montrent que dans tous les alliages étudiés, la

J. P. Riviere; J. F. Dinhut; J. C. Desoyer

1981-01-01

223

Voies molculaires dans le cancer du rein : de la biologie aux traitements de demain Signalling pathways in renal cell carcinoma: from the molecular biology to the futur  

E-print Network

1 Voies moléculaires dans le cancer du rein : de la biologie aux traitements de demain Signalling pathways in renal cell carcinoma: from the molecular biology to the futur therapy Julien Edeline (1 Manuscrit auteur, publié dans "Bulletin du cancer 2010;97:5-15" DOI : 10.1684/bdc.2010.1066 #12;2 Résumé

Paris-Sud XI, Université de

224

GRADUATE BOOKLET Physics / Applied Physics  

E-print Network

GRADUATE BOOKLET Physics / Applied Physics This booklet contains rules, guidelines and general, Electromagnetic Theory, Classical Dynamics, and Statistical Mechanics. Graduate students are expected to pass

Rock, Chris

225

Physical Education  

NSDL National Science Digital Library

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

Cherry, Mr.

2008-10-06

226

Physics Central  

NSDL National Science Digital Library

This site provides weekly physics articles containing a short introduction to the physics involved and a taste of the current research in the field. It includes an archive of physics photos and images, a section for posing questions to a physicist, physics news, essays and excerpts by physicists, and biographical information on some physicists. There are also links (categorized by level) to related sites, teacher resources, interactive media, and physics history sites.

227

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

228

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

NASA Astrophysics Data System (ADS)

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

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

2012-04-01

229

Diversification and Expression of the PIN, AUX/LAX, and ABCB Families of Putative Auxin Transporters in Populus  

PubMed Central

Intercellular transport of the plant hormone auxin is mediated by three families of membrane-bound protein carriers, with the PIN and ABCB families coding primarily for efflux proteins and the AUX/LAX family coding for influx proteins. In the last decade our understanding of gene and protein function for these transporters in Arabidopsis has expanded rapidly but very little is known about their role in woody plant development. Here we present a comprehensive account of all three families in the model woody species Populus, including chromosome distribution, protein structure, quantitative gene expression, and evolutionary relationships. The PIN and AUX/LAX gene families in Populus comprise 16 and 8 members respectively and show evidence for the retention of paralogs following a relatively recent whole genome duplication. There is also differential expression across tissues within many gene pairs. The ABCB family is previously undescribed in Populus and includes 20 members, showing a much deeper evolutionary history, including both tandem and whole genome duplication as well as probable gene loss. A striking number of these transporters are expressed in developing Populus stems and we suggest that evolutionary and structural relationships with known auxin transporters in Arabidopsis can point toward candidate genes for further study in Populus. This is especially important for the ABCBs, which is a large family and includes members in Arabidopsis that are able to transport other substrates in addition to auxin. Protein modeling, sequence alignment and expression data all point to ABCB1.1 as a likely auxin transport protein in Populus. Given that basipetal auxin flow through the cambial zone shapes the development of woody stems, it is important that we identify the full complement of genes involved in this process. This work should lay the foundation for studies targeting specific proteins for functional characterization and in situ localization. PMID:22645571

Carraro, Nicola; Tisdale-Orr, Tracy Eizabeth; Clouse, Ronald Matthew; Knöller, Anne Sophie; Spicer, Rachel

2012-01-01

230

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

231

How Do Education Students Learn Physics?  

ERIC Educational Resources Information Center

Research in physics education has identified students' attitudes and beliefs that contribute to higher gains in learning. The study investigated the extent of change in education majors' attitudes, beliefs and cognitive expectations after going through an introductory physics course. Using the MPEX (Maryland Physics Expectations) Survey and the…

Mistades, Voltaire Mallari

2011-01-01

232

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

233

Physics Notes  

ERIC Educational Resources Information Center

Described are 13 physics experiments/demonstrations applicable to introductory physics courses. Activities include: improved current balance, division circuits, liquid pressure, convection, siphons, oscillators and modulation, electrical resistance, soap films, Helmholtz coils, radioactive decay, and springs. (SL)

School Science Review, 1976

1976-01-01

234

Physical Allergy  

MedlinePLUS

... physical stimulus. Physical stimuli include the following: Cold Sunlight Heat or other stimuli that cause sweating (such ... a foreign substance and attacks it. Sensitivity to sunlight (photosensitivity) is an example. Ultraviolet light changes proteins ...

235

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

236

Report Ocean WG Contributions from  

E-print Network

Report Ocean WG Contributions from SMHI, MISU, KNMI Andreas Sterl #12;Contributions SMHI: Heat budget of Arctic Ocean Tuning MISU: Overturning and water masses KNMI: warm SST bias in Southern Ocean #12;SMHI #12;Ocean heat transport into the Arctic in CMIP5-simulations with EC-Earth solid: RCP4

Stoffelen, Ad

237

Quantum circuit physical design methodology with emphasis on physical synthesis  

NASA Astrophysics Data System (ADS)

In our previous works, we have introduced the concept of "physical synthesis" as a method to consider the mutual effects of quantum circuit synthesis and physical design. While physical synthesis can involve various techniques to improve the characteristics of the resulting quantum circuit, we have proposed two techniques (namely gate exchanging and auxiliary qubit selection) to demonstrate the effectiveness of the physical synthesis. However, the previous contributions focused mainly on the physical synthesis concept, and the techniques were proposed only as a proof of concept. In this paper, we propose a methodological framework for physical synthesis that involves all previously proposed techniques along with a newly introduced one (called auxiliary qubit insertion). We will show that the entire flow can be seen as one monolithic methodology. The proposed methodology is analyzed using a large set of benchmarks. Experimental results show that the proposed methodology decreases the average latency of quantum circuits by about 36.81 % for the attempted benchmarks.

Mohammadzadeh, Naser; Saheb Zamani, Morteza; Sedighi, Mehdi

2013-11-01

238

http://u-sports.univ-fcomte.fr Jeudi 15 Election du Directeur de l'Upfr Sports -Conformment aux statuts de l'Upfr  

E-print Network

«promotion des sports» jeudi 29 nuit du handball à partir de 18 h - salle 1 et grande halle Sports Cohttp://u-sports.univ-fcomte.fr M A R S l'Act' Jeudi 15 Election du Directeur de l'Upfr Sports - Conformément aux statuts de l'Upfr Sports, seuls les enseignants-chercheurs, les enseignants ou les chercheurs

Jeanjean, Louis

239

Les cycles de l'interaction pour l'accs aux connaissances en sciences de l'information et de la communication :l'exemple du dispositif FORSIC.  

E-print Network

Les cycles de l'interaction pour l'accès aux connaissances en sciences de l'information et de la communication :l'exemple du dispositif FORSIC. Auteurs : Ertzscheid Olivier : doctorant en Sciences de l'Information Sciences Sociales de Toulouse 1. Link-Pezet Jo : Maître de Conférence en Sciences de l'Information et de la

Paris-Sud XI, Université de

240

Proposition de stage M2 thorique Sujet : Les phonons de cisaillement et leur couplage aux lectrons dans une bi-couche  

E-print Network

Proposition de stage M2 théorique Sujet : Les phonons de cisaillement et leur couplage aux électrons dans une bi-couche de graphène Lieu de stage : LPMMC, Grenoble Encadrant : Denis BASKO Contact déplacement. Le premier but du stage est donc de déterminer l'Hamiltonien effectif du couplage électron

van Tiggelen, Bart

241

Faites des sciences et Dcouvrez les technologies... aux activits parallles ! Institut Zoologique, quai Van Beneden, 22 -4020 Lige -un seul lieu, une exposition interactive  

E-print Network

Faites des sciences et Découvrez les technologies... aux activités parallèles ! Institut Zoologique consommées actuellement :le pavot (Papaver somniferum L.), le chanvre (Cannabis sativa L.), le CocaLundi 28 mars Activités sur réservation. Inscrivez-vous via le formulaire sur notre site web : www.ulg.ac.be/sciences

Liège, Université de

242

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

243

Quantification of social contributions to earthquake mortality  

NASA Astrophysics Data System (ADS)

Death tolls in earthquakes, which continue to grow rapidly, are the result of complex interactions between physical effects, such as strong shaking, and the resilience of exposed populations and supporting critical infrastructures and institutions. While it is clear that the social context in which the earthquake occurs has a strong effect on the outcome, the influence of this context can only be exposed if we first decouple, as much as we can, the physical causes of mortality from our consideration. (Our modelling assumes that building resilience to shaking is a social factor governed by national wealth, legislation and enforcement and governance leading to reduced levels of corruption.) Here we attempt to remove these causes by statistically modelling published mortality, shaking intensity and population exposure data; unexplained variance from this physical model illuminates the contribution of socio-economic factors to increasing earthquake mortality. We find that this variance partitions countries in terms of basic socio-economic measures and allows the definition of a national vulnerability index identifying both anomalously resilient and anomalously vulnerable countries. In many cases resilience is well correlated with GDP; people in the richest countries are unsurprisingly safe from even the worst shaking. However some low-GDP countries rival even the richest in resilience, showing that relatively low cost interventions can have a positive impact on earthquake resilience and that social learning between these countries might facilitate resilience building in the absence of expensive engineering interventions.

Main, I. G.; NicBhloscaidh, M.; McCloskey, J.; Pelling, M.; Naylor, M.

2013-12-01

244

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

PubMed Central

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

2015-01-01

245

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.

246

Animation Physics  

NSDL National Science Digital Library

This web site provides physics tutorials and other resources for animation artists and professionals working in the animation industry. There are three tutorials covering topics related to the graphical representation of linear and accelerated motion, rotations, and center of mass. The presentation is non-mathematical and focuses on the consequences of the laws of physics. The web site also provides other physics references for animators and has started a wiki for community building.

Garcia, Alejandro

2009-04-02

247

Tesla's contribution to radiowave propagation  

Microsoft Academic Search

We review Nikola Tesla's contribution to radiowave propagation and wireless power transmission. Tesla's patents, published and unpublished notes about radiowave propagation and wireless power transmission are less known, and if known to some extent, they are usually wrongly interpreted

Aleksandar Marincic; Djuradj Budimir

2001-01-01

248

Extremely high density of magnetic excitations at T =0 in YbCu5 -xAux  

NASA Astrophysics Data System (ADS)

Structural, magnetic, transport, and thermal properties of YbCu5 -xAux alloys with Au concentration between x =0.4 (at the stability limit of AuBe5-type structure) and x =0.7 are reported. The outstanding features of this system are (i) the constant and record high value of Cm/T ?6.7 J/mol K2 below a characteristic temperature T* (ranging between 150 mK and 350 mK), (ii) a power law of temperature dependence Cm/T (T >T*) =g /Tq , with q ranging between 1.3 and 0.95 for decreasing x from 0.7 to 0.5, and (iii) an observation of incoherent electronic scattering in the resistivity at T <1 K for x ?0.6 despite the fact that Yb magnetic atoms are placed in an ordered lattice. Geometric frustration, originating from the tetrahedral distribution of Yb atoms, appears to be responsible for the lack of magnetic order and the exotic behavior of this system.

?urlík, I.; Giovannini, M.; Sereni, J. G.; Zapotoková, M.; Gabáni, S.; Reiffers, M.

2014-12-01

249

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

NASA Astrophysics Data System (ADS)

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

Landry, Alexandre

250

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

251

Football Physics  

NSDL National Science Digital Library

Dr. Tim Gay at the University of Nebraska - Lincoln discusses the physical concepts related to football such as vectors, impulse, and atoms. The website provides seven current as well as archived QuickTime videos of entertaining lectures to help students understand physical concepts. The lessons covered are: Inertia; Vectors; Newton's Third Law; Impulse; Quickness, Speed, Power and Strength; and Quickness and Ankle Injuries.

Gay, Timothy J. (Timothy James), 1953-

2008-04-25

252

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

253

Climate Physics  

ERIC Educational Resources Information Center

Numerous connections exist between climate science and topics normally covered in physics and physical science courses. For instance, lessons on heat and light can be used to introduce basic climate science, and the study of electric circuits provides a context for studying the relationship between electricity consumption and carbon pollution. To…

Space, William

2007-01-01

254

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

255

Getting Physical.  

ERIC Educational Resources Information Center

Discusses how high schools are responding to the decline in student physical fitness with new facilities that attract students to fitness. Use of alternative sports, e.g., hiking, climbing, and in-line skating is discussed; as are creating new facilities that encourage student use through technology; and integrating physical education with other…

Peterson, Erin

1998-01-01

256

Physics Quizzes and Physics Trivia  

NSDL National Science Digital Library

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

257

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

258

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

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:

From Aristotle Through; C. W. Hart; Janice Clark; Smithsonian Folklife Studies; Robert Mcc Adams; Janice Clark

259

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

260

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

261

Contributions from the CYGNUS/Milagro Collaboration  

SciTech Connect

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

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

1995-09-01

262

Leonardo da Vinci's contributions to neuroscience.  

PubMed

Leonardo da Vinci (1452-1519) made far-reaching contributions to many areas of science, technology and art. Leonardo's pioneering research into the brain led him to discoveries in neuroanatomy (such as those of the frontal sinus and meningeal vessels) and neurophysiology (he was the first to pith a frog). His injection of hot wax into the brain of an ox provided a cast of the ventricles, and represents the first known use of a solidifying medium to define the shape and size of an internal body structure. Leonardo developed an original, mechanistic model of sensory physiology. He undertook his research with the broad goal of providing physical explanations of how the brain processes visual and other sensory input, and integrates that information via the soul. PMID:11998691

Pevsner, Jonathan

2002-04-01

263

Black Physical Educators and Utilitarianism.  

ERIC Educational Resources Information Center

The contributions of black professional personnel to the field of physical education are enumerated and described. The careers of Anita J. Turner, Edwin B. Henderson, and Albert J. Overly in particular are examined. The ability of a minority group to provide significant leadership in an educational field is discussed, and the challenge still…

Coursey, Leon N.

264

Lattice QCD for nuclear physics  

SciTech Connect

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 [Center for Theoretical Physics, Massachusetts Institute of Technology, 77 Massachusetts Ave., Cambridge, MA 02139 (United States)

2013-11-07

265

Positron Physics  

NASA Astrophysics Data System (ADS)

This book provides a comprehensive and up-to-date account of the field of low energy positrons and positronium within atomic and molecular physics. It begins with an introduction to the field, discussing the background to low energy positron beams, and then covers topics such as total scattering cross sections, elastic scattering, positronium formation, excitation and ionization, annihilation and positronium interactions. Each chapter contains a blend of theory and experiment, giving a balanced treatment of all the topics. The book will be useful for graduate students and researchers in physics and chemistry. It is ideal for those wishing to gain rapid, in-depth knowledge of this unique branch of atomic physics.

Charlton, M.; Humberston, J. W.

2000-12-01

266

Spin physics at RHIC  

SciTech Connect

Polarized-proton collisions at a collision energy 200 GeV started in 2001 at RHIC in BNL. We have investigated a polarized structure of the proton to understand the origin of the nucleon spin 1/2 with polarized-proton collisions. The first goal of spin physics at RHIC is determination of the gluon-spin contribution to the proton spin. The PHENIX and STAR experiments have investigated the gluon-spin contribution by measuring longitudinal-spin asymmetries of neutral pion and jet produced in longitudinally-polarized proton collisions. Experimental results have shown that these asymmetries are small and strong constraints have been given for the gluon-spin contribution. From 2009, polarized-proton collisions at a collision energy 500 GeV started and we have investigated flavor-sorted contribution of the quark spin to the proton spin with weak-boson production. The final remaining piece of information to understand the proton spin is orbital-angular momenta of quarks and gluons. Multi-dimensional structure of the nucleon which includes information of the orbital-angular motion inside the nucleon has been investigated with transverse-spin asymmetry measurements.

Goto, Yuji [RIKEN Nishina Center for Accelerator-Based Science, Wako, Saitama 351-0198 (Japan) and RIKEN BNL Research Center, Brookhaven National Laboratory, Upton, New York 11973 (United States)

2010-05-12

267

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

268

Sports physical  

MedlinePLUS

... to: Find out if you are in good health Measure the maturity of your body Measure your physical ... playing sports. The doctor will focus on the health of your lungs, ... may: Measure your height and weight Measure blood pressure and ...

269

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.

Christopher Griffith

270

Physics 2000  

NSDL National Science Digital Library

This web site utilizes interactive visual exhibits to relate modern physics concepts to familiar real-world phenomena. It is qualitative and conceptual, aimed at a broad range of audiences and grade levels.

Goldman, Martin

2003-10-10

271

DOING Physics.  

ERIC Educational Resources Information Center

Describes three physics demonstrations: "Sticky Kinematics," dealing with motion in friction; "The Whistler," presenting a whistle-like sound of descending pitch from an iron spring; and "Magnetic Superconducter Mystery," generating a question why a magnet keeps spinning. (YP)

Zwicker, Earl, Ed.

1989-01-01

272

Physics Notes.  

ERIC Educational Resources Information Center

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

School Science Review, 1981

1981-01-01

273

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

274

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

275

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.

276

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

277

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

278

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

279

High Pt Jet Physics  

E-print Network

In this contribution, a comprehensive review of the main aspects of high $\\pt$ jet physics in Run II at the Tevatron is presented. Recent measurements on inclusive jet production are discussed using different jet algorithms and covering a wide region of jet transverse momentum and jet rapidity. Several measurements, sensitive to a proper description of soft gluon radiation and the underlying event in hadron collisions, are shown. Finally, high $\\pt$ prompt photon measurements and studies on the production of electroweak bosons in association with jets in the final state are discussed.

M. Martinez

2006-10-13

280

Quantum Physics  

NASA Astrophysics Data System (ADS)

Quantum physics allows us to understand the nature of the physical phenomena which govern the behavior of solids, semi-conductors, lasers, atoms, nuclei, subnuclear particles and light. In Quantum Physics, Le Bellac provides a thoroughly modern approach to this fundamental theory. Throughout the book, Le Bellac teaches the fundamentals of quantum physics using an original approach which relies primarily on an algebraic treatment and on the systematic use of symmetry principles. In addition to the standard topics such as one-dimensional potentials, angular momentum and scattering theory, the reader is introduced to more recent developments at an early stage. These include a detailed account of entangled states and their applications, the optical Bloch equations, the theory of laser cooling and of magneto-optical traps, vacuum Rabi oscillations, and an introduction to open quantum systems. This is a textbook for a modern course on quantum physics, written for advanced undergraduate and graduate students. Completely original and contemporary approach, using algebra and symmetry principles Introduces recent developments at an early stage, including many topics that cannot be found in standard textbooks. Contains 130 physically relevant exercises

Le Bellac, Michel

2006-03-01

281

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

282

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

2006-03-22

283

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

284

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

285

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

E-print Network

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

Dennis, Nancy

286

CONTRIBUTED Solution-Processed Quantum  

E-print Network

CONTRIBUTED P A P E R Solution-Processed Quantum Dot Photodetectors Flexible thin-film-wavelength infrared. We also highlight the achievement of solution-processed photoconductive photo- detectors combining photoconductive gain and temporal responses faster than 30 ms, devices therefore compatible

287

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

288

Assessing Contributions to Group Assignments  

ERIC Educational Resources Information Center

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

Johnston, Lucy; Miles, Lynden

2004-01-01

289

Design Editorial Industrial Research Contributions  

E-print Network

Journal of Mechanical Design Editorial Industrial Research Contributions Would authors working in industry be welcome contributors to JMD? The answer is an emphatic "yes, indeed!" but the reality is that authors from industry are a small minority relative to authors from academia. There are some real reasons

Papalambros, Panos

290

ORIGINAL CONTRIBUTION Diffusion Tensor Tractography  

E-print Network

- sequence of traumatic brain injury that frequently in- volves the parasagittal white matter, corpus and to deter- mine their relationship to outcome. Setting: Inpatient traumatic brain injury unit. PatientsORIGINAL CONTRIBUTION Diffusion Tensor Tractography of Traumatic Diffuse Axonal Injury Jun Yi Wang

O'Toole, Alice J.

291

The Chicken: Contributions to Genetic  

E-print Network

for its contribution to further an understanding of · Behavior · Developmental biology · Biochemistry Incubation behavior Maternal behavior Flocking Mating #12;Traits that favor genetic analyses · Can control to experimentation · Well studied in other disciplines #12;Some firsts (science) 1902 ­ 1st animal species

292

Environmental Contributions to Allergic Disease  

E-print Network

Environmental Contributions to Allergic Disease Estelle Levetin, PhD and Peter Van de Water, Ph with increased exposure to air pollution and indoor contaminants such as house dust mites, cockroaches disease is more complex than increased exposure to pollution and allergens and that early childhood

Levetin, Estelle

293

Caroline Herschel's contributions to astronomy  

Microsoft Academic Search

The nature of the contributions to astronomy of Caroline Lucretia Herschel (1750–1848) are explored in this article. Her accomplishments included new observational discoveries and the skilled and accurate transcription and reduction of astronomical data. Although she made important additions to the sum total of astronomical facts available to the scientist, she herself showed little interest or ability in applying these

Marilyn Bailey Ogilvie

1975-01-01

294

SAN FRANCISCO ESTUARY INSTITUTE CONTRIBUTION  

E-print Network

SAN FRANCISCO ESTUARY INSTITUTE CONTRIBUTION NO. 574 JUNE 2008 7770 Pardee Lane, Second floor in the San Francisco Estuary by Bruce Thompson and Sarah Lowe San Francisco Estuary Institute Bays and Estuaries provide a new framework and methods for assessment of sediment condition in San

295

Robert Hooke's Seminal Contribution to Orbital Dynamics  

NASA Astrophysics Data System (ADS)

During the second half of the seventeenth century, the outstanding problem in astronomy was to understand the physical basis for Kepler’s laws describing the observed orbital motion of a planet around the Sun. In the middle 1660s,Robert Hooke (1635 1703) proposed that a planet’s motion is determined by compounding its tangential velocity with the change in radial velocity impressed by the gravitational attraction of the Sun, and he described his physical concept to Isaac Newton (1642 1726) in correspondence in 1679. Newton denied having heard of Hooke’s novel concept of orbital motion, but shortly after their correspondence he implemented it by a geometric construction from which he deduced the physical origin of Kepler’s area law,which later became Proposition I, Book I, of his Principia in 1687.Three years earlier, Newton had deposited a preliminary draft of it, his De Motu Corporum in Gyrum (On the Motion of Bodies), at the Royal Society of London, which Hooke apparently was able to examine a few months later, because shortly there-after he applied Newton’s construction in a novel way to obtain the path of a body under the action of an attractive central force that varies linearly with the distance from its center of motion (Hooke’s law). I show that Hooke’s construction corresponds to Newton’s for his proof of Kepler’s area law in his De Motu. Hooke’s understanding of planetary motion was based on his observations with mechanical analogs. I repeated two of his experiments and demonstrated the accuracy of his observations.My results thus cast new light on the significance of Hooke’s contributions to the development of orbital dynamics, which in the past have either been neglected or misunderstood.

Nauenberg, Michael

2005-03-01

296

Processed foods: contributions to nutrition.  

PubMed

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

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

2014-04-23

297

Contributions of chemistry in early day Los Alamos  

SciTech Connect

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

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

1990-01-01

298

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

ERIC Educational Resources Information Center

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

Bloodworth, Andrew; McNamee, Mike; Bailey, Richard

2012-01-01

299

Physics Songs and Physics Poems  

NSDL National Science Digital Library

Hosted by Haverford College and maintained by Associate Professor of Physics Walter F. Smith, the PhysicsSongs.org Web site is just that. Students and educators will find songs that have been written about such things as Gauss's Law, The Twelve Days of Newton, The Relativity Song, and more. Words are provided, and some even contain playable recordings. Who said learning isn't fun?

Smith, Walter F.

2001-01-01

300

[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

301

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

302

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

303

The Influence of Accelerator Science on Physics Research  

NASA Astrophysics Data System (ADS)

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

Haussecker, Enzo F.; Chao, Alexander W.

2011-06-01

304

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

305

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

306

Physics of iron  

SciTech Connect

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

Anderson, O.

1993-10-01

307

The origins of medical physics.  

PubMed

The historical origins of medical physics are traced from the first use of weighing as a means of monitoring health by Sanctorius in the early seventeenth century to the emergence of radiology, phototherapy and electrotherapy at the end of the nineteenth century. The origins of biomechanics, due to Borelli, and of medical electricity following Musschenbroek's report of the Leyden Jar, are included. Medical physics emerged as a separate academic discipline in France at the time of the Revolution, with Jean Hallé as its first professor. Physiological physics flowered in Germany during the mid-nineteenth century, led by the work of Adolf Fick. The introduction of the term medical physics into English by Neil Arnott failed to accelerate its acceptance in Britain or the USA. Contributions from Newton, Euler, Bernoulli, Nollet, Matteucci, Pelletan, Gavarret, d'Arsonval, Finsen, Röntgen and others are noted. There are many origins of medical physics, stemming from the many intersections between physics and medicine. Overall, the early nineteenth-century definition of medical physics still holds today: 'Physics applied to the knowledge of the human body, to its preservation and to the cure of its illnesses'. PMID:24709572

Duck, Francis A

2014-06-01

308

Motor contributions to the perception of relative phase.  

PubMed

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

Cook, Richard; Gaule, Anne; Aichelburg, Clarisse; Press, Clare

2014-10-01

309

Woman in Physics in Slovenia  

NASA Astrophysics Data System (ADS)

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

Zeleznik, Nadja; Conradi, Marjetka; Remskar, Maja

2009-04-01

310

Soil Physics  

Microsoft Academic Search

Now in its third edition, this textbook gives a comprehensive account of soil physics with emphasis on field applications for students and research workers engaged in water resources studies, soil sciences, and plant sciences. The authors have added chapters on soil erosion, conservation, and the role of soil in affecting water quality to this new edition. The book gives an

T. J. Marshall; J. W. Holmes; C. W. Rose

1996-01-01

311

Collaboration Physics  

ERIC Educational Resources Information Center

What happens when university curriculum developers are mixed with motivated elementary teachers? ? An awesome learning collaboration that benefits researchers, teachers, and students! That's what the authors discovered when they--university researchers involved in the Physics for Elementary Teachers (PET) project--teamed up with local elementary…

Harlow, Danielle; Otero, Valerie K.

2005-01-01

312

Physical Security  

SciTech Connect

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

None

2008-01-01

313

Physics Demonstrations  

NSDL National Science Digital Library

The teaching of physics is clearly enhanced by the use of demonstrations. Visual examples of abstract concepts aid immeasurably in their mastery. They also provide an opportunity to illustrate the scientific method and to teach the student to relate experimental observation to scientific theory. Experiments represent the means by which scientific knowledge has advanced so rapidly in modern times. Finally, not to be underestimated, the use of demonstrations makes the learning of physics much more enjoyable! This book is a compilation of many of the demonstrations that have been used at the University of Wisconsin - Madison in the teaching of elementary physics over the years as well as a number of demonstrations that I have developed for use in a series of popular lectures, "The Wonders of Physics," aimed at the general public and children in particular. Included also are a number of demonstrations that have been suggested and used by friends or colleagues. All of the demonstrations have been thoroughly tested in a classroom setting or before an audience of the general public.

Sprott, Julien

2009-05-20

314

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. All of the topics may be downloaded for use offline.

Tatum, J. B.

2006-07-18

315

Physical Units  

NSDL National Science Digital Library

This page 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, Carl R.

2004-12-15

316

Physics Demonstrations  

NSDL National Science Digital Library

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

317

"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

318

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

319

Physics Notes.  

ERIC Educational Resources Information Center

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

School Science Review, 1981

1981-01-01

320

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

321

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).

322

Johannes Kepler and his contribution to Applied Mathematics  

NASA Astrophysics Data System (ADS)

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 advances by Kepler in the application of mathematics to the solution of "real life problems". The author made a concise account of some of the disciples by Kepler: Klug, Wieleitner, Caspar, Hammer, paying particular attention to works published by Kepler while he was living in Linz (1612-1628). The Kepler's contribution to applied mathematics is an example supremely worthy of emulation, the author concludes.

Pichler, Franz

323

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.

324

Physics Back in TIME  

NASA Astrophysics Data System (ADS)

Recently, I came into possession of an unusual item: a collection of 1928 TIME magazines. I began flipping through the pages out of sheer curiosity—and was soon astonished by the scale and the depth of their physics coverage. Back then, TIME had a special "Science" section in almost every issue and devoted quite a bit of space to the events that would hardly be mentioned in any popular magazine these days. Some of them were fleeting and merely curious, some truly timeless. Many of the articles and notes were devoted to physics: the people, the discoveries, the inventions, the conventions. I found the reading both entertaining and enlightening and would like to offer a sampler here. I hope that these little tidbits of history will lighten up the classroom discussions and help inspire your students by reminding them that physics is a dynamic, ever-changing field to which they may well contribute one day. I have found that my own students love it when a little bit of history is brought up; it always generates interesting questions and seems to spark the students' interest in the topic.

Korsunsky, Boris

2014-03-01

325

Women in Physics.  

ERIC Educational Resources Information Center

This booklet presents information about career opportunities for women in physics. Included are summaries of research areas in physics (optical physics, solid-state physics, materials science, nuclear physics, high-energy physics, astrophysics, cryogenics, plasma physics, biophysics, atmospheric physics) and differences between theory and…

Roth, Laura M.; O'Fallon, Nancy M.

326

DEPARTMENT OF PHYSICS Physics 32100  

E-print Network

to one- electron atoms, atomic shell structure and periodic table; nuclear physics, relativity the significance of the Pauli exclusion principle and the periodic table. 7. understand how quantum mechanics, harmonic oscillator, hydrogen atom again, etc. 6. Pauli exclusion principle and the periodic table 7

Lombardi, John R.

327

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

328

EDITORIAL: Physics competitions Physics competitions  

NASA Astrophysics Data System (ADS)

International tests on competences, such as TIMSS or PISA, and knowledge of young students have revealed low average scores in many countries, often unexpectedly. One effective measure to increase the average standard of a population is to bring the last third of the group to a higher level. Therefore, many nations put some effort into this activity. This brings the danger that not enough attention is paid to students at the other end, those who are talented. Indeed, it is a very difficult task for a teacher to support the less able and at the same time challenge the gifted students, to lead them to the limits of their abilities and provide for a smooth transition to university study. Physics competitions have been proven to fulfil these last demands to a large degree, and therefore are an important additional and, to some extent, complementary tool for the promotion of talented students. This third special section on physics competitions in European Journal of Physics contains three papers, each dealing with a different form of science contest. The first continues the series of presentations of tasks performed at the International Young Physicists' Tournament, which was held in Vienna in 2011. First place went to the team from Singapore, and they have put their investigation on vertical oscillations of coupled magnets into written form (not required by the tournament, where an oral presentation and a defence and discussion are the central aspects). Their paper shows how rich in physics this problem is, and what level of solutions high-school students can already achieve. Sadly, those responsible for the organization of last year's International Physics Olympiad did not provide us with a report on this competition. This is unfortunate, since the Olympiad in Zagreb was very successful and, in particular, the experimental tasks were creative and demanding. Very similar to the aims and the execution of the Physics Olympiad is the International Olympiad on Astronomy and Astrophysics. Those in charge of the competition give an overview of this relatively young tournament. They give a few examples of theoretical and experimental tasks, and one can see the strong connection between astronomy and physics, between the large scales in the universe and the small scales in particle physics. The third paper introduces a special competition called 'First Step to Nobel Prize in Physics'. It was conceived as a national event in Poland and has gained international reputation and acceptance since 1992. Papers are submitted from young students prior to university and are refereed in the same manner as real research papers. This means that the most important criterion is the originality and novelty of the activity performed in theoretical or experimental physics. The aims of this competition are set out below and can be seen as a credo for all competitions: promotion of scientific interest among young pupils selection and promotion of outstanding pupils enhancing motivation stimulation of school work establishing friendly relations between young physicists.

Jordens, H.; Mathelitsch, L.

2011-07-01

329

Physics Applets  

NSDL National Science Digital Library

Created as part of the Museum Informatics Project at the University of California, Berkeley, this website serves as a clearinghouse of high-quality physics applets that can be used in a variety of settings. The site is divided into a few basic topical areas, such as mechanics, waves, properties of heat and matter, and optics. While a search engine isn't provided, visitors can use the "Find" function provided by most browsers to look for specific items of interest. It is worth noting that the applets dealing with various fields of optics are quite strong, and visitors will no doubt locate at least a handful of applets here that they can use in the classroom or just to increase their own understanding of physics.

330

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

331

Conceptual Physics  

NSDL National Science Digital Library

This web site contains a free textbook for a non-mathematical Conceptual Physics course aimed at high school or beginning college students. The author adopts a modern approach to understanding physics revolving around the concepts of symmetry and conservation laws. Specific topics include Conservation of Mass and Energy, Conservation of Momentum, Relativity, Electricity and Fields, The Ray Model of Light, and Waves. The textbook is designed for a one semester course, but some chapters can easily be omitted for a shorter course. It is available in a freely downloadable pdf format or can be quickly navigated online with html chapter links. A printed version is available for purchase for the cost of printing and shipping.

Crowell, Benjamin

2007-10-04

332

Physical Geology  

NSDL National Science Digital Library

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

Stephen Nelson

333

Optical Physics  

NASA Astrophysics Data System (ADS)

Optical science, the science that studies the nature of light, can be approached from several different angles. In this third edition of a successful and well-established text, the author focuses on physical and geometrical optics. The text is based largely on Fourier analysis and shows how this method can be used to describe wave propagation and diffraction and their applications to imaging, microscopy, X-ray crystallography, radio-astronomy, and communication. Several new sections have been added, including discussions of super-resolved imaging (near field and confocal microscopy), phase-retrieval in optical and X-ray diffraction, phase-conjugate imaging, astronomical speckle masking, and squeezed-light interferometry. Throughout, the subject matter is developed by a combination of unsophisticated mathematics and physical intuition. The very broad range of subjects treated, together with the inclusion of many problems and over 300 diagrams and photographs, will make the book of great use to undergraduate and graduate students of physics, and to anyone working in the field of optical science.

Lipson, Stephen G.; Lipson, Henry; Tannhauser, David Stefan

1995-08-01

334

Solar Physics  

NASA Technical Reports Server (NTRS)

The areas of emphasis are: (1) develop theoretical models of the transient release of magnetic energy in the solar atmosphere, e.g., in solar flares, eruptive prominences, coronal mass ejections, etc.; (2) investigate the role of the Sun's magnetic field in the structuring of solar corona by the development of three-dimensional numerical models that describe the field configuration at various heights in the solar atmosphere by extrapolating the field at the photospheric level; (3) develop numerical models to investigate the physical parameters obtained by the ULYSSES mission; (4) develop numerical and theoretical models to investigate solar activity effects on the solar wind characteristics for the establishment of the solar-interplanetary transmission line; and (5) develop new instruments to measure solar magnetic fields and other features in the photosphere, chromosphere transition region and corona. We focused our investigation on the fundamental physical processes in solar atmosphere which directly effect our Planet Earth. The overall goal is to establish the physical process for the Sun-Earth connections.

Wu, S. T.

2000-01-01

335

PREFACE: 16th Russian Youth Conference on Physics and Astronomy (PhysicA.SPb/2013)  

NASA Astrophysics Data System (ADS)

The sixteenth Russian Conference on Physics and Astronomy PhysicA.SPb was held 23-24 October 2013 in Saint-Petersburg, Russia. The Conference continues the tradition of Saint-Petersburg Seminars on Physics and Astronomy originating from mid-90s. Since then PhysicA.SPb maintains both scientific and educational quality of contributions delivered to the young audience. This is the main feature of the Conference that makes it possible to combine the whole spectrum of modern Physics and Astronomy within one event. PhysicA.SPb/2013 has brought together about 200 students, young scientists and their colleague professors from many universities and research institutes across whole Russia as well as from Belarus, Ukraine, Switzerland, Turkey, Finland and France. Oral and poster presentations were combined into a few well-defined sections among which one should name Astronomy and Astrophysics, Plasma physics, hydro- and aero-dynamics, Physics of quantum-sized structures, Nanostructured and thin-film materials, Biophysics, THz and UHF materials and devices, Optoelectronic devices, Optics and spectroscopy, Atomic and elementary particles physics, Defects and impurities in solid state, Physics and technology of the alternative energetics. This issue of the Journal of Physics: Conference Series presents the extended contributions from participants of PhysicA.SPb/2013 that were peer-reviewed by expert referees through processes administered by the Presiders of the Organising and Programme Committees to the best professional and scientific standards. The Editors: Nikita S. Averkiev, Sergey A. Poniaev and Grigorii S. Sokolovskii

2014-12-01

336

Effects of physical erosion on chemical denudation rates: A numerical modeling study of soil-mantled hillslopes  

E-print Network

Effects of physical erosion on chemical denudation rates: A numerical modeling study of soil 2008 Editor: R.W. Carlson Keywords: chemical weathering physical erosion denudation cosmogenic nuclides contributes to physical erosion by weakening bedrock and producing easily erodible regolith

Kirchner, James W.

337

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

338

Astronuclear Physics with Short-Lived Isotopes  

E-print Network

A revolution in nuclear physics is underway. If you know hadron physics you also know that it will last long, as most past developments in nuclear physics have shown. It will take many decades of dedicated efforts of theorists and experimentalists to give astronomers, cosmologists and stellar modelers what they need for the accuracy required in the description and modeling of many cosmic phenomena of interest. In this contribution I review a small number of examples of the utmost relevance for the nuclear in the astro and in particular the humongous importance of the new area of astronuclear physics studied in radioactive beam facilities.

C. A. Bertulani

2014-03-31

339

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

340

Résistance aux antituberculeux  

Microsoft Academic Search

Mycobacteria responsible for tuberculosis (M. tuberculosis, M. bovis, M. africanum) are susceptible to a very small number of antibiotics. As soon as these drugs were used in humans all gave rise to the selection of resistant mycobacteria. Study of the mechanisms of acquired resistance, with the help of the genetics of mycobacteria, led to a more accurate understanding of the

N. Veziris; E. Cambau; W. Sougakoff; J. Robert; V. Jarlier

2005-01-01

341

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

342

Physics with Taus at CDF  

SciTech Connect

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

Safonov, Alexei; /UC, Davis

2004-12-01

343

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

344

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

345

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.

346

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

347

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

348

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.

349

Physics (Phys) (Department of Physics and Engineering)  

E-print Network

229Physics Physics (Phys) (Department of Physics and Engineering) McCormick Foundation PROFESSORSILU INSTRUCTOR CUMMING VISITING PROFESSOR BOLLER MAJORS A major in physics leading to a Bachelor of Science degree requires completion of 50 credits including the following: 1. Physics 111, 112, 113, 114, 210, 215

Dresden, Gregory

350

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.

351

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

352

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.

353

Physics 480 Introduction to Solid State Physics  

E-print Network

Physics 480 Introduction to Solid State Physics Spring 2012 Logistics Lecture Room: 1100 (Live Oak://www.csun.edu/~nkioussi Prerequisites Quantum Mechanics or Modern Physics at 375 level Textbook Introduction to Solid State Physics, Charles Kittel, Wiley, 8th Edition Reference: Neil W. Ashcroft and N. David Mermin, Solid State Physics

Kioussis, Nicholas

354

Statistical Contributions to Proteomic Research  

PubMed Central

Proteomic profiling has the potential to impact the diagnosis, prognosis, and treatment of various diseases. A number of different proteomic technologies are available that allow us to look at many proteins at once, and all of them yield complex data that raise significant quantitative challenges. Inadequate attention to these quantitative issues can prevent these studies from achieving their desired goals, and can even lead to invalid results. In this chapter, we describe various ways the involvement of statisticians or other quantitative scientists in the study team can contribute to the success of proteomic research, and we outline some of the key statistical principles that should guide the experimental design and analysis of such studies. PMID:20407946

Morris, Jeffrey S.; Baggerly, Keith A.; Gutstein, Howard B.; Coombes, Kevin R.

2012-01-01

355

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

356

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.

357

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.

358

Physics Applets  

NSDL National Science Digital Library

These physics applets involve astrophysics, energy and environment, mechanics, and thermodynamics. The astrophysics applets are related to spectroscopy, photometry, orbital mechanics and cosmology, and include a simulation of colliding galaxies. The energy and environment applets are about weather, exponential growth, voltage, work, population growth and units, and include simulators of the global warming greenhouse effect and circuits. The mechanics applets involve motion in one and two dimensions, friction, energy conservation, and gravity as it relates to Kepler's third law. The thermodynamics applets explore the ideal gas law, Maxwellian velocity distribution, and thermodynamic equilibrium. There are also tools such as a graphing applet, FitsReader, and a spreadsheet.

359

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

360

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

361

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

362

Spin physics with antiprotons  

E-print Network

New possibilities arising from the availability at GSI of antiproton beams, possibly polarised, are discussed. The investigation of the nucleon structure can be boosted by accessing in Drell-Yan processes experimental asymmetries related to cross-sections in which the parton distribution functions (PDF) only appear, without any contribution from fragmentation functions; such processes are not affected by the chiral suppression of the transversity function $h_1(x)$. Spin asymmetries in hyperon production and Single Spin Asymmetries are discussed as well, together with further items like electric and magnetic nucleonic form factors and open charm production. Counting rates estimations are provided for each physical case. The sketch of a possible experimental apparatus is proposed.

M. Maggiora; for the ASSIA Collaboration

2005-04-07

363

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

364

Bioinformatic cis-element analyses performed in Arabidopsis and rice disclose bZIP- and MYB-related binding sites as potential AuxRE-coupling elements in auxin-mediated transcription  

PubMed Central

Background In higher plants, a diverse array of developmental and growth-related processes is regulated by the plant hormone auxin. Recent publications have proposed that besides the well-characterized Auxin Response Factors (ARFs) that bind Auxin Response Elements (AuxREs), also members of the bZIP- and MYB-transcription factor (TF) families participate in transcriptional control of auxin-regulated genes via bZIP Response Elements (ZREs) or Myb Response Elements (MREs), respectively. Results Applying a novel bioinformatic algorithm, we demonstrate on a genome-wide scale that singular motifs or composite modules of AuxREs, ZREs, MREs but also of MYC2 related elements are significantly enriched in promoters of auxin-inducible genes. Despite considerable, species-specific differences in the genome structure in terms of the GC content, this enrichment is generally conserved in dicot (Arabidopsis thaliana) and monocot (Oryza sativa) model plants. Moreover, an enrichment of defined composite modules has been observed in selected auxin-related gene families. Consistently, a bipartite module, which encompasses a bZIP-associated G-box Related Element (GRE) and an AuxRE motif, has been found to be highly enriched. Making use of transient reporter studies in protoplasts, these findings were experimentally confirmed, demonstrating that GREs functionally interact with AuxREs in regulating auxin-mediated transcription. Conclusions Using genome-wide bioinformatic analyses, evolutionary conserved motifs have been defined which potentially function as AuxRE-dependent coupling elements to establish auxin-specific expression patterns. Based on these findings, experimental approaches can be designed to broaden our understanding of combinatorial, auxin-controlled gene regulation. PMID:22852874

2012-01-01

365

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

366

38 CFR 21.5052 - Contribution requirements.  

Code of Federal Regulations, 2013 CFR

...2013-07-01 false Contribution requirements. 21.5052 Section 21.5052 Pensions, Bonuses, and Veterans' Relief DEPARTMENT...38 U.S.C. Chapter 32 Participation § 21.5052 Contribution requirements. (a) Minimum...

2013-07-01

367

38 CFR 21.5052 - Contribution requirements.  

Code of Federal Regulations, 2010 CFR

...2010-07-01 false Contribution requirements. 21.5052 Section 21.5052 Pensions, Bonuses, and Veterans' Relief DEPARTMENT...38 U.S.C. Chapter 32 Participation § 21.5052 Contribution requirements. (a) Minimum...

2010-07-01

368

38 CFR 21.5052 - Contribution requirements.  

Code of Federal Regulations, 2012 CFR

...2012-07-01 false Contribution requirements. 21.5052 Section 21.5052 Pensions, Bonuses, and Veterans' Relief DEPARTMENT...38 U.S.C. Chapter 32 Participation § 21.5052 Contribution requirements. (a) Minimum...

2012-07-01

369

38 CFR 21.5052 - Contribution requirements.  

Code of Federal Regulations, 2014 CFR

...2014-07-01 false Contribution requirements. 21.5052 Section 21.5052 Pensions, Bonuses, and Veterans' Relief DEPARTMENT...38 U.S.C. Chapter 32 Participation § 21.5052 Contribution requirements. (a) Minimum...

2014-07-01

370

38 CFR 21.5052 - Contribution requirements.  

Code of Federal Regulations, 2011 CFR

...2011-07-01 false Contribution requirements. 21.5052 Section 21.5052 Pensions, Bonuses, and Veterans' Relief DEPARTMENT...38 U.S.C. Chapter 32 Participation § 21.5052 Contribution requirements. (a) Minimum...

2011-07-01

371

On Ramachandra's Contributions to Transcendental Number Theory  

E-print Network

On Ramachandra's Contributions to Transcendental Number Theory Michel WALDSCHMIDT Universit P. et M(C) for the complex topology? The other contributions of Ramachandra to transcendental number theory are dealt

Paris-Sud XI, Université de

372

Matlab Module to Delineate Zones of Contribution  

NSDL National Science Digital Library

This is a visual demonstration of the effects of aquifer parameters and stresses on the size and shape of zones of contribution. With these simple Matlab routines, students can rapidly observe zones of contributions for different sets of input parameters.

Roseanna Neupauer

373

Heinrich Obersteiner and his contributions.  

PubMed

Heinrich Obersteiner (1847-1921) was amongst the most influential neuroscientists in the 19th century. Born into a family of physicians, he gained early exposure to medicine, and as a medical student, he focused much of his research in neuroanatomy, eventually becoming a professor of neuroanatomy at the University of Vienna. Throughout his academic career, he focused greatly on neuropathology, and incorporated much of his research into his textbook, "Introduction to the Study of the Structure of the Central Nervous Organs in Health and Disease," which was considered the foremost reference text of neurology for many generations of scholars. The culmination of his contributions to the neurological world can be seen as the Neurological Institute of Vienna, which he founded in 1882. Scholars from all over the world sought out his expertize and tutelage. While he was the director of the Institute, over 500 articles were published within the Obersteiner-Arbeiten. Much of this work helped set the foundation for the eventual development of neurology as a medical discipline. A review of his life will help us better understand the legacy Heinrich Obersteiner left in the field of neurology. Clin. Anat. 28:5-11, 2015. © 2014 Wiley Periodicals, Inc. PMID:24753297

Cesmebasi, Alper; John, Alana; Etienne, Denzil; Shane Tubbs, R; Loukas, Marios

2015-01-01

374

The microbial contribution to macroecology  

PubMed Central

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

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

2014-01-01

375

Using internet assessment tools for health and physical education instruction  

Microsoft Academic Search

Conclusions  Physical education should provide opportunities for students to participate in activities that promote fitness and well-being.\\u000a Implementing best practices into the physical education curriculum can contribute to the understanding and application of\\u000a a healthy lifestyle for students. Technology applied in the physical education curriculum can provide an opportunity for improved\\u000a instruction and enhanced student learning in physical education. The current

Roland Thornburg; Kory Hill

2004-01-01

376

Neutrino Physics  

E-print Network

These lectures describe some aspects of the physics of massive neutrinos. After a brief introduction of neutrinos in the Standard Model, I discuss possible patterns for their masses. In particular, I show how the presence of a large Majorana mass term for the right-handed neutrinos can engender tiny neutrino masses for the observed neutrinos. If neutrinos have mass, different flavors of neutrinos can oscillate into one another. To analyze this phenomena, I develop the relevant formalism for neutrino oscillations, both in vacuum and in matter. After reviewing the existing (negative) evidence for neutrino masses coming from direct searches, I discuss evidence for, and hints of, neutrino oscillations in the atmosphere, the sun, and at accelerators. Some of the theoretical implications of these results are emphasized. I close these lectures by briefly outlining future experiments which will shed further light on atmospheric, accelerator and solar neutrino oscillations. A pedagogical discussion of Dirac and Majora...

Peccei, Roberto D

1999-01-01

377

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.

David Teegarden

2004-01-01

378

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

Code of Federal Regulations, 2010 CFR

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

2010-04-01

379

Paternal contribution: new insights and future challenges  

Microsoft Academic Search

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

Stephen A. Krawetz

2005-01-01

380

11 CFR 9034.2 - Matchable contributions.  

Code of Federal Regulations, 2010 CFR

...contribution by a credit card or debit card...full name and card number of the cardholder...credit or debit card are matchable contributions...Contributions by credit card or debit card where...cardholder's name and card number are given to...

2010-01-01

381

11 CFR 9034.2 - Matchable contributions.  

Code of Federal Regulations, 2012 CFR

...contribution by a credit card or debit card...full name and card number of the cardholder...credit or debit card are matchable contributions...Contributions by credit card or debit card where...cardholder's name and card number are given to...

2012-01-01

382

11 CFR 9034.2 - Matchable contributions.  

Code of Federal Regulations, 2011 CFR

...contribution by a credit card or debit card...full name and card number of the cardholder...credit or debit card are matchable contributions...Contributions by credit card or debit card where...cardholder's name and card number are given to...

2011-01-01

383

11 CFR 9034.2 - Matchable contributions.  

Code of Federal Regulations, 2014 CFR

...contribution by a credit card or debit card...full name and card number of the cardholder...credit or debit card are matchable contributions...Contributions by credit card or debit card where...cardholder's name and card number are given to...

2014-01-01

384

11 CFR 9034.2 - Matchable contributions.  

Code of Federal Regulations, 2013 CFR

...contribution by a credit card or debit card...full name and card number of the cardholder...credit or debit card are matchable contributions...Contributions by credit card or debit card where...cardholder's name and card number are given to...

2013-01-01

385

Contributions to cooperative rearing in meerkats  

Microsoft Academic Search

In vertebrate societies where young are reared communally, nonbreeding helpers are usually closely related to young but often vary widely in their contributions to feeding them. Evolutionary explanations of helping behaviour have focused on whether differences in the level of contributions between helpers are related to variation in kinship. We investigated the contribution of helpers in meerkats, Suricata suricatta. The

T. H. Clutton-Brock; P. N. M. Brotherton; M. J. O'Riain; A. S. Griffin; D. Gaynor; R. Kansky; L. Sharpe; G. M. McIlrath

2001-01-01

386

Elevated Seismic Activity Beneath the Slumbering Morne aux Diables Volcano, Northern Dominica and the Monitoring Role of the Seismic Research Centre  

NASA Astrophysics Data System (ADS)

Since June 2009, periods of elevated seismic activity have been experienced around the flanks of Morne Aux Diables Volcano in northern Dominica. This long-dormant volcano is a complex of 7 andesitic lava domes with a central depression where a cold soufrière is evident. Prior to this activity, seismicity was very quiet except for a short period in 2000 and an intense short-lived swarm in April 2003. The most recent earthquake activity has been regularly felt by residents in villages on all flanks of the complex. In Dec 09/Jan10, scientists from the Seismic Research Centre (SRC), based in Trinidad & Tobago, in collaboration with staff of the Office of Disaster Management (ODM) and Dominica Public Seismic Network (DPSN) improved the monitoring capacity around this volcano from 1 to 7 seismic stations. Earthquakes are determined to be volcano-tectonic in nature and located at shallow depths (<4 km) beneath the central depression. Additionally, in Jan/Feb 10 geothermal sampling was undertaken and 2 permanent GPS sites were deployed. Public information leaflets prepared by SRC scientists using a "Question & Answer" format have been distributed to concerned citizens whilst many public meetings were carried out by ODM staff. Field investigations indicate that the previous Late Pleistocene activity of Morne Aux Diables switched from Pelèan dome growth and gravitational collapse to more explosive pumice-falls and associated ignimbrites, both styles forming extensive pyroclastic fans around the central complex. The town of Portsmouth is located on one of these fans ~5 km southwest of the central depression. Sporadic, short bursts of seismic activity continue at the time of writing.

Watts, R. B.; Robertson, R. E.; Abraham, W.; Cole, P.; de Roche, T.; Edwards, S.; Higgins, M.; Johnson, M.; Joseph, E. P.; Latchman, J.; Lynch, L.; Nath, N.; Ramsingh, C.; Stewart, R. C.

2012-12-01

387

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

PubMed Central

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

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

2014-01-01

388

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

389

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

390

Department Of Physics And  

E-print Network

PHYSICSCOURSES F300 BSc Physics AAB F301 MPhys Physics AAA F305 MPhys Physics with study in North America AAA F and Astronomers - Mathematics - The Solar System - Our Evolving Universe - The Physics of Sustainable Energy

Crowther, Paul

391

Physics teaching in developing countries  

NASA Astrophysics Data System (ADS)

The need for endogeneous learning materials that will relate physics to the student's culture and environment spurred countries like India, Thailand, The Philippines and Indonesia to develop their own physics curriculum materials and laboratory equipment. Meagre resources and widespread poverty necessitated the development of laboratory materials from everyday items, recycled materials and other low-cost or no-cost local materials. The process of developing learning materials for one's teaching-learning needs in physics and the search from within for solutions to one's problems contribute in no small measure to the development of self-reliance in physics teaching of a developing country. Major concerns of developing countries are food supply, livelihood, health, nutrition and growth of economy. At the level of the student and his family, food, health, and livelihood are also primary concerns. Many physics teaching problems can be overcome on a large scale, given political support and national will. In countries where national leadership recognises that science and technology developed is essential to national development and that science education in turn is crucial to science and technology development, scarce resources can be allocated to science education. In developing countries where science education receives little or no political support, the most important resource in the physics classroom is the physics teacher. A highly motivated and adequately trained teacher can rise above the constraining circumstances of paucity of material resources and government apathy. In developing countries the need is great for self-reliance in physics teaching at the country level, and more importantly at the teacher level.

Talisayon, V. M.

1984-05-01

392

PREFACE: 31st European Physical Society Conference on Plasma Physics  

NASA Astrophysics Data System (ADS)

This special issue of Plasma Physics and Controlled Fusion comprises refereed papers contributed by invited speakers at the 31st European Physical Society Conference on Plasma Physics. The conference was jointly hosted by the Rutherford Appleton Laboratory, by the EURATOM/UKAEA Fusion Association and by Imperial College London, where it took place from 28 June to 2 July 2004. The overall agenda for this conference was set by the Board of the Plasma Physics Division of the European Physical Society, chaired by Friedrich Wagner (MPIPP, Garching) and his successor Jo Lister (CRPP, Lausanne). It built on developments in recent years, by further increasing the scientific diversity of the conference programme, whilst maintaining its depth and quality. A correspondingly diverse Programme Committee was set up, whose members are listed below. The final task of the Programme Committee has been the preparation of this special issue. In carrying out this work, as in preparing the scientific programme of the conference, the Programme Committee formed specialist subcommittees representing the different fields of plasma science. The chairmen of these subcommittees, in particular, accepted a very heavy workload on behalf of their respective research communities. It is a great pleasure to take this opportunity to thank: Emilia R Solano (CIEMAT, Madrid), magnetic confinement fusion; Jürgen Meyer-ter-Vehn (MPQ, Garching), laser-plasma interaction and beam plasma physics; and Jean-Luc Dorier (CRPP, Lausanne), dusty plasmas. The relatively few papers in astrophysical and basic plasma physics were co-ordinated by a small subcommittee which I led. Together with Peter Norreys (RAL, Chilton), we five constitute the editorial team for this special issue. The extensive refereeing load, compressed into a short time interval, was borne by the Programme Committee members and by many other experts, to whom this special issue owes much. We are also grateful to the Local Organizing Committee chaired by Henry Hutchinson (RAL, Chilton), and to the Plasma Physics and Controlled Fusion journal team (Institute of Physics Publishing, Bristol), for their work on this conference. At the 2004 European Physical Society Conference on Plasma Physics, plenary invited speakers whose talks spanned the entire field were followed, each day, by multiple parallel sessions which also included invited talks. Invited speakers in both these categories were asked to contribute papers to this special issue (the contributed papers at this conference, and at all recent conferences in this series, are archived at http://epsppd.epfl.ch). The Programme Committee is very grateful to the many invited speakers who have responded positively to this request. Invited papers appear here in their order of presentation during the week beginning 28 June 2004; this ordering provides an echo of the character of the conference, as it was experienced by those who took part. Programme Committee 2004 Professor Richard Dendy UKAEA Culham Division, UK Chairman and guest editor Dr Jean-Luc Dorier Centre de Recherches en Physique des Plasmas, Lausanne, Switzerland (Co-ordinator of dusty plasmas and guest editor) Professor Jürgen Meyer-ter-Vehn Max-Planck-Institut für Quantenoptik, Garching, Germany (Co-ordinator of laser-plasma interaction and beam plasma physics and guest editor) Dr Peter Norreys Rutherford Appleton Laboratory, Chilton, UK (Scientific Secretary and guest editor) Dr Emilia R Solano CIEMAT Laboratorio Nacional de Fusión, Madrid, Spain ( Co-ordinator of magnetic confinement fusion and guest editor) Dr Shalom Eliezer Soreq Nuclear Research Centre, Israel Dr Wim Goedheer FOM-Instituut voor Plasmafysica, Rijnhuizen, Netherlands Professor Henry Hutchinson Rutherford Appleton Laboratory, Chilton, UK Professor John Kirk Max-Planck-Institut für Kernphysik, Heidelberg, Germany Dr Raymond Koch Ecole Royale Militaire/Koninklijke Militaire School, Brussels, Belgium Professor Gerrit Kroesen Technische Universiteit Eindhoven, Netherlands Dr Martin Lampe Naval Research Laboratory, Washington DC,

Dendy, Richard

2004-12-01

393

Physical Plant Strategic Plan 2010 PHYSICAL PLANT  

E-print Network

Physical Plant Strategic Plan ­ 2010 1 PHYSICAL PLANT 2010 STRATEGIC PLAN Strategic Planning and Assessment Reports MISSION STATEMENT The Physical Plant provides building and service environments conducive Physical Plant will be recognized both within the university and externally as an efficient and effective

Westfall, Peter H.

394

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.

395

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.

396

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

397

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.

398

People's Physics Book The People's Physics Book  

E-print Network

#12;People's Physics Book The People's Physics Book Authors James H. Dann, Ph.D. James J. Dann. All rights reserved. Textbook Website http://scipp.ucsc.edu/outreach/index2.html #12;People's Physics) "Each discovery, each advance, each increase in the sum of human riches, owes its being to the physical

California at Santa Cruz, University of

399

Color Imaging Arithmetic: Physics Math > Physics + Math  

E-print Network

Color Imaging Arithmetic: Physics Math > Physics + Math Gaurav Sharma University of Rochester inter- action commonly form the physical interface by which we connect to the digital cyber-world. Because these devices bridge the physical and the electronic worlds, elegant and effective solutions

Sharma, Gaurav

400

People's Physics Book The People's Physics Book  

E-print Network

People's Physics Book The People's Physics Book Authors James H. Dann, Ph.D. James J. Dann. All rights reserved. Textbook Website http://scipp.ucsc.edu/outreach/index2.html #12;People's Physics) "Each discovery, each advance, each increase in the sum of human riches, owes its being to the physical

California at Santa Cruz, University of

401

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

402

Physics 100B General Physics II  

E-print Network

, Quantum Theory, Atomic physics, Nuclear Physics, and Elementary particles. (Chapters 19-31) RequirementPhysics 100B General Physics II Fall 2009 COURSE ID # MPKIOUSSIS99828 (needed to register online:15 am Instructor Prof. Nicholas Kioussis Office: Science I 1123 Office Hours: M: 8:45 ­ 9: 30 am

Kioussis, Nicholas

403

Serotonergic Contribution to Boys' Behavioral Regulation  

PubMed Central

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

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

2011-01-01

404

Taming the Goldstone contributions to the effective potential  

NASA Astrophysics Data System (ADS)

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

Martin, Stephen P.

2014-07-01

405

Anatomical and Physiological Factors Contributing to Chronic Muscle Pain  

PubMed Central

Chronic muscle pain remains a significant source of suffering and disability despite the adoption of pharmacologic and physical therapies. Muscle pain is mediated by free nerve endings distributed through the muscle along arteries. These nerves project to the superficial dorsal horn and are transmitted primarily through the spinothalamic tract to several cortical and subcortical structures, some of which are more active during the processing of muscle pain than other painful conditions. Mechanical forces, ischemia, and inflammation are the primary stimuli for muscle pain, which is reflected in the array of peripheral receptors contributing to muscle pain-ASIC, P2X, and TRP channels. Sensitization of peripheral receptors and of central pain processing structures are both critical for the development and maintenance of chronic muscle pain. Further, variations in peripheral receptors and central structures contribute to the significantly greater prevalence of chronic muscle pain in females. PMID:24633937

Gregory, Nicholas S.; Sluka, Kathleen A.

2015-01-01

406

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

407

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

E-print Network

acoustics physics, mathematics and music. The world of music presents two strictly connected components of the acoustic phenomenon of harmonics had great importance in the construction of scales and of the modern and of molecules. With this work I would like to show an example of how it is possible, with the help of music

Spagnolo, Filippo

408

Quantum Physics  

NSDL National Science Digital Library

The revered quantum physicist Richard Feynman once quipped, â??I 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. Whatâ??s 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. Donâ??t forget the Lecture Notes (youâ??ll 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

2013-01-01

409

Gender and ethnic disparities contributing to overweight in California adolescents  

Microsoft Academic Search

Purpose  To explore differences in health behaviors and factors contributing to overweight among 12 to 17 year olds in California.\\u000a \\u000a \\u000a \\u000a Methods  Data from the 2005 California Health Interview Survey for 3,315 adolescents self-identified as Latino, Asian, or white were\\u000a reviewed. Adolescents reported their weight, height, gender, ethnicity, parents’ educational level, household income, physical\\u000a activity, sedentary activity, breakfast consumption, and family meals.\\u000a \\u000a \\u000a \\u000a \\u000a Results  Overall 34%

Mary Ellen Wilkosz; Jyu-Lin Chen; Christine Kennedy; Sally Rankin

2010-01-01

410

COURS ET SMINAIRES OFFERTS AUX GRADES SUPRIEURS TRIMESTRE D'HIVER 2015 HEURES LUNDI MARDI MERCREDI JEUDI VENDREDI  

E-print Network

MERCREDI JEUDI VENDREDI 8h30 à 11h30 PSY7903F: Organisation professionnelle et éthique (**) � déterminer (9h à 12h) Pavillon Marie-Victorin local à venir PSY6106G: Contributions psychologiques à la santé Serge Sultan Marie-Victorin local E-214 PSY6415H: Neuropsychologie de la sénescence Simona Maria

Parrott, Lael

411

Research Plan for Spin Physics at RHIC 1 Executive Summary (by Gerry)  

E-print Network

spin program. The Department of Energy's Office of Nuclear Physics Science and Technology Review and Nuclear Physics, to create this plan. The RHIC spin physics program contributes to a developingResearch Plan for Spin Physics at RHIC Abstract #12;1 Executive Summary (by Gerry) Briefly describe

Ohta, Shigemi

412

Resolving the Antarctic contribution to sea-level rise: a hierarchical modelling framework†  

PubMed Central

Determining the Antarctic contribution to sea-level rise from observational data is a complex problem. The number of physical processes involved (such as ice dynamics and surface climate) exceeds the number of observables, some of which have very poor spatial definition. This has led, in general, to solutions that utilise strong prior assumptions or physically based deterministic models to simplify the problem. Here, we present a new approach for estimating the Antarctic contribution, which only incorporates descriptive aspects of the physically based models in the analysis and in a statistical manner. By combining physical insights with modern spatial statistical modelling techniques, we are able to provide probability distributions on all processes deemed to play a role in both the observed data and the contribution to sea-level rise. Specifically, we use stochastic partial differential equations and their relation to geostatistical fields to capture our physical understanding and employ a Gaussian Markov random field approach for efficient computation. The method, an instantiation of Bayesian hierarchical modelling, naturally incorporates uncertainty in order to reveal credible intervals on all estimated quantities. The estimated sea-level rise contribution using this approach corroborates those found using a statistically independent method. © 2013 The Authors. Environmetrics Published by John Wiley & Sons, Ltd. PMID:25505370

Zammit-Mangion, Andrew; Rougier, Jonathan; Bamber, Jonathan; Schön, Nana

2014-01-01

413

Annual Solid State Physics Conference (12th)  

Microsoft Academic Search

The Twelfth Annual Solid State Physics Conference, held 6-8 January 1975 at the University of Manchester. This report outlines the talks of the twelve invited speakers. In addition, several of the invited talks for a special symposium on liquid crystals and contributed papers on semiconductors are briefly sketched. The program included topics on phase transitions superconductivity, a pendulum analog for

R. F. Potter

1975-01-01

414

Effective Teaching in Physical Education: Slovenian Perspective  

ERIC Educational Resources Information Center

Regular quality physical education (PE) contributes to the harmonized biopsychosocial development of a young person--to relaxation, neutralization of negative effects of sedentary hours, and other unhealthy habits/behaviors. The evaluation approach to PE effectiveness provides important information to PE teachers and also to students. However,…

Pišot, Rado; Plevnik, Matej; Štemberger, Vesna

2014-01-01

415

7 CFR 966.45 - Contributions.  

Code of Federal Regulations, 2011 CFR

... AGRICULTURAL MARKETING SERVICE (Marketing Agreements and Orders; Fruits, Vegetables, Nuts), DEPARTMENT OF AGRICULTURE TOMATOES GROWN IN FLORIDA Order Regulating Handling Expenses and Assessments § 966.45 Contributions. The...

2011-01-01

416

7 CFR 1703.122 - Matching contributions.  

Code of Federal Regulations, 2013 CFR

...Agriculture (Continued) RURAL UTILITIES SERVICE, DEPARTMENT OF AGRICULTURE RURAL DEVELOPMENT Distance Learning and Telemedicine Grant Program § 1703.122 Matching contributions. (a) The grant applicant's minimum matching...

2013-01-01

417

7 CFR 1703.122 - Matching contributions.  

Code of Federal Regulations, 2012 CFR

...Agriculture (Continued) RURAL UTILITIES SERVICE, DEPARTMENT OF AGRICULTURE RURAL DEVELOPMENT Distance Learning and Telemedicine Grant Program § 1703.122 Matching contributions. (a) The grant applicant's minimum matching...

2012-01-01

418

7 CFR 1703.122 - Matching contributions.  

Code of Federal Regulations, 2014 CFR

...Agriculture (Continued) RURAL UTILITIES SERVICE, DEPARTMENT OF AGRICULTURE RURAL DEVELOPMENT Distance Learning and Telemedicine Grant Program § 1703.122 Matching contributions. (a) The grant applicant's minimum matching...

2014-01-01

419

7 CFR 1703.122 - Matching contributions.  

Code of Federal Regulations, 2010 CFR

...Agriculture (Continued) RURAL UTILITIES SERVICE, DEPARTMENT OF AGRICULTURE RURAL DEVELOPMENT Distance Learning and Telemedicine Grant Program § 1703.122 Matching contributions. (a) The grant applicant's minimum matching...

2010-01-01

420

7 CFR 1703.122 - Matching contributions.  

Code of Federal Regulations, 2011 CFR

...Agriculture (Continued) RURAL UTILITIES SERVICE, DEPARTMENT OF AGRICULTURE RURAL DEVELOPMENT Distance Learning and Telemedicine Grant Program § 1703.122 Matching contributions. (a) The grant applicant's minimum matching...

2011-01-01

421

31 CFR 595.408 - Charitable contributions.  

Code of Federal Regulations, 2014 CFR

... Regulations Relating to Money and Finance (Continued) OFFICE OF FOREIGN ASSETS CONTROL, DEPARTMENT OF THE TREASURY TERRORISM SANCTIONS REGULATIONS Interpretations § 595.408 Charitable contributions. (a) Unless specifically...

2014-07-01

422

26 CFR 1.72(e)-1T - Treatment of distributions where substantially all contributions are employee contributions...  

Code of Federal Regulations, 2010 CFR

...Treatment of distributions where substantially all contributions are employee contributions...Treatment of distributions where substantially all contributions are employee contributions...section 72 and under which substantially all of the contributions are employee...

2010-04-01

423

Physics Laboratory in UEC  

NASA Astrophysics Data System (ADS)

All the first-year students in the University of Electro-Communications (UEC) take "Basic Physics I", "Basic Physics II" and "Physics Laboratory" as required subjects; Basic Physics I and Basic Physics II are calculus-based physics of mechanics, wave and oscillation, thermal physics and electromagnetics. Physics Laboratory is designed mainly aiming at learning the skill of basic experimental technique and technical writing. Although 95% students have taken physics in the senior high school, they poorly understand it by connecting with experience, and it is difficult to learn Physics Laboratory in the university. For this reason, we introduced two ICT (Information and Communication Technology) systems of Physics Laboratory to support students'learning and staff's teaching. By using quantitative data obtained from the ICT systems, we can easily check understanding of physics contents in students, and can improve physics education.

Takada, Tohru; Nakamura, Jin; Suzuki, Masaru

424

The physical activity profile of active children in England  

PubMed Central

Background In line with WHO guidelines, the UK government currently recommends that school-aged children participate in at least 60 minutes, and up to several hours, of at least moderate physical activity on a daily basis. A recent health survey indicates that the amount of reported physical activity varies by age, gender and socioeconomic status. The objective of this study is to identify what types of activity contribute most towards overall physical activity in children who achieve the UK physical activity recommendations; and how this varies according to age, gender and socioeconomic status. Methods Self-reported physical activity was captured through the Health Survey for England 2008, a nationally representative, cross-sectional survey. We analysed data from 1,110 children aged 5–15 years who reported meeting the UK physical activity recommendations. The proportions of total physical activity achieved in various domains of activity were calculated and associations with age, gender and socioeconomic status were examined. Results Active play was the largest contributor to overall physical activity (boys?=?48%, girls?=?53%), followed by walking (boys?=?17%, girls?=?23%). Active school travel contributed only a small proportion (6% for boys and girls). With increasing age, the contribution from active play decreased (rho?=?-0.417; p?contribution of walking (rho?=?0.257; p?contributed more among boys than girls. Sport contributed proportionately less with increasing deprivation (rho?=?-0.191; p?physical activity among active children varies with age, socioeconomic status and gender. This knowledge can be used to target interventions appropriately to increase physical activity in children at a population level. PMID:24341402

2013-01-01

425

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.

426

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

2010-08-13

427

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.

428

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.

429

Lattice QCD Studies of the Leading Order Hadronic Contribution to the Muon $g-2$  

E-print Network

The anomalous magnetic moment of the muon, $g_\\mu-2$, is one of the most promising observables to identify hints for physics beyond the Standard Model. QCD contributions are currently responsible for the largest fraction of the overall theoretical uncertainty in $g_\\mu-2$. The possibility to determine these hadronic contributions from first principles through lattice QCD calculations has triggered a number of recent studies. Recent proposals to improve the accuracy of lattice determinations are reported. We present an update of our studies of the leading-order hadronic contribution to $g_\\mu-2$ with improved Wilson fermions.

Anthony Francis; Vera Gülpers; Gregorio Herdoíza; Georg von Hippel; Hanno Horch; Benjamin Jäger; Harvey B. Meyer; Eigo Shintani; Hartmut Wittig

2014-11-12

430

Physics in NASA Exploration  

NASA Technical Reports Server (NTRS)

The primary focus of the workshop was NASA's new concentration on sending crewed missions to the Moon by 2020, and then on to Mars and beyond. Several speakers, including JPL s Fred O Callaghan and NASA's Mark Lee, broached the problem that there is now a serious reduction of capability to perform experiments in the ISS, or to fly significant mass in microgravity by other means. By 2010, the shuttle fleet will be discontinued and Russian craft will provide the only access to the ISS. O Callaghan stated that the Fundamental Physics budget is being reduced by 70%. LTMPF and LCAP are slated for termination. However, ground-based experiments are continuing to be funded at present, and it will be possible to compete for $80-90 million in new money from the Human Research Initiative (HRI). The new program thrust is for exploration, not fundamental physics. Fundamental, we were told by Lee, does not ring well in Washington these days. Investigators were advised to consider how their work can benefit missions to the Moon and Mars. Work such as that regarding atomic clocks is looked upon with favor, for example, because it is considered important to navigation and planetary GPS. Mark Lee stressed that physicists must convey to NASA senior management that they are able and willing to contribute to the new exploration research programs. The new mentality must be we deliver products, not do research. This program needs to be able to say that it is doing at least 50% exploration-related research. JPL s Ulf Israelsson discussed the implications to OBPR, which will deliver methods and technology to assure human health and performance in extraterrestrial settings. The enterprise will provide advanced life-support systems and technology that are reliable, capable, simpler, less massive, smaller, and energy-efficient, and it may offer other necessary expertise in areas such as low-gravity behavior. Like Dr. Lee, he stated that the focus must be on products, not research. While there is not yet a formal direction, he said, LTMPF and PARCS ISS flight projects are slated to terminate in October 2004. All flight investigations are being returned to ground programs and phased out by the end of FY07. Physics ground programs are intact for now, but to survive we must shift about 50% of research to supporting exploration. Basic research programs in other disciplines are being cancelled. Product lines will support human health, safety and life-support, including countermeasures against radiation and other hazards, as well as advances in time-keeping, navigation and communications technologies. Israelsson said that the new Fundamental Physics for Exploration Roadmap points to how fundamental physics research can and does support exploration. JPL will use the roadmap to argue for support for fundamental physics research under several codes. Nicholas Bigelow of the University of Rochester encouraged attendees not to become discouraged, but rather to embrace the opportunities presented by NASA's new direction.

O'Callaghan, Fred

2004-01-01

431

VLHC accelerator physics  

SciTech Connect

A six-month design study for a future high energy hadron collider was initiated by the Fermilab director in October 2000. The request was to study a staged approach where a large circumference tunnel is built that initially would house a low field ({approx}2 T) collider with center-of-mass energy greater than 30 TeV and a peak (initial) luminosity of 10{sup 34} cm{sup -2}s{sup -1}. The tunnel was to be scoped, however, to support a future upgrade to a center-of-mass energy greater than 150 TeV with a peak luminosity of 2 x 10{sup 34} cm{sup -2} sec{sup -1} using high field ({approx} 10 T) superconducting magnet technology. In a collaboration with Brookhaven National Laboratory and Lawrence Berkeley National Laboratory, a report of the Design Study was produced by Fermilab in June 2001. 1 The Design Study focused on a Stage 1, 20 x 20 TeV collider using a 2-in-1 transmission line magnet and leads to a Stage 2, 87.5 x 87.5 TeV collider using 10 T Nb{sub 3}Sn magnet technology. The article that follows is a compilation of accelerator physics designs and computational results which contributed to the Design Study. Many of the parameters found in this report evolved during the study, and thus slight differences between this text and the Design Study report can be found. The present text, however, presents the major accelerator physics issues of the Very Large Hadron Collider as examined by the Design Study collaboration and provides a basis for discussion and further studies of VLHC accelerator parameters and design philosophies.

Michael Blaskiewicz et al.

2001-11-01

432

Versatile Physical Pendulum  

NASA Astrophysics Data System (ADS)

It makes good sense to extend the range of usefulness of a piece of equipment beyond that intended originally. A commonly available "variable g" physical pendulum allows one to vary the angle ? of its plane of oscillation to the vertical, so that in the expression for its period, g cos ? replaces g. As shown in Fig. 1, the physical pendulum consists of a heavy cylindrical steel bob that can slide up and down a light aluminum rod whose top is attached to a cylindrical pivot resting on ball bearings. The aim of this paper is to describe a sequence of activities in rigid-body dynamics based on a triply modified version of this pendulum, extending over two lab sessions, carried out toward the end of a calculus-based mechanics course. However, the experiment can be analyzed at various levels, whether calculus based or by more elementary means. Figure 1 shows how we bolted a protractor to the top front of the instrument, so that one can measure the initial amplitude ?0 from which the bob is released. This enables one to study the amplitude dependence of the period between 0-90°. In addition, we have turned on the lathe an aluminum bob of identical shape and size. For this much lighter bob, the aluminum rod contributes a significant fraction to the total moment of inertia of the pendulum. Finally, we have improved the pivot's ball bearings, so that when released from 90° the pendulum continues swinging for 20 minutes or more, enabling one to observe the decay of its amplitude over a long time.

Gluck, Paul

2004-04-01

433

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

434

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: Wednesdays, 1:30­3 pm, and by appointment. Text: The required text for the course is · Nuclear and Particle

California at Santa Cruz, University of

435

Physical Activity Promotion and School Physical Education.  

ERIC Educational Resources Information Center

This report examines school physical education (PE) and how it can be an important part of the national physical activity promotion effort. Section 1 introduces the issue of youth activity and PE, noting that schools and universities must reintroduce daily, quality physical activity as a key component of comprehensive education. Section 2…

Morrow, James R., Jr.; Jackson, Allen W.; Payne, V. Gregory

1999-01-01

436

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

437

Astroparticle physics with solar neutrinos  

PubMed Central

Solar neutrino experiments observed fluxes smaller than the expectations from the standard solar model. This discrepancy is known as the “solar neutrino problem”. Flux measurements by Super-Kamiokande and SNO have demonstrated that the solar neutrino problem is due to neutrino oscillations. Combining the results of all solar neutrino experiments, parameters for solar neutrino oscillations are obtained. Correcting for the effect of neutrino oscillations, the observed neutrino fluxes are consistent with the prediction from the standard solar model. In this article, results of solar neutrino experiments are reviewed with detailed descriptions of what Kamiokande and Super-Kamiokande have contributed to the history of astroparticle physics with solar neutrino measurements. PMID:21558758

NAKAHATA, Masayuki

2011-01-01

438

Pulsars and high density physics.  

PubMed

In outlining the physics of neutron stars, and my good fortune in stumbling upon them, I hope that I have given some idea of the interest and rewards of extending physics beyond the confines of laboratories. These are good times in which to be an astrophysicist. I am also deeply aware of my debt to all my colleagues in the Cavendish Laboratory. Firstly to Sir Martin Ryle for his unique flair in creating so congenial and stimulating a team in which to work. Secondly to Jocelyn Bell for the care, diligence, and persistence that led to our discovery so early in the scintillation program, and finally to my friends who contributed so generously in many aspects of the work. PMID:17798425

Hewish, A

1975-06-13

439

Physics at COSY-Jülich  

NASA Astrophysics Data System (ADS)

COSY, a storage and cooler synchrotron, which is fed by an injector cyclotron, is operated at Forschungszentrum Jülich (Germany). It provides phase space cooled polarized or unpolarized beams of protons and deuterons with momenta between 0.3 and 3.7 GeV/c for internal experiments and to external target stations. The major experimental facilities, used for the ongoing physics program, are ANKE and WASA (internal) and TOF (external). A new internal target station to investigate polarization build-up by spin-filtering (PAX) has recently been commissioned. COSY is the machine for hadron spin physics on a world-wide scale, which is also used for tests in conjunction with plans to build a dedicated storage ring for electric dipole moment (EDM) measurements of proton, deuteron and 3He. In this contribution recent results as well as future plans are summarized.

Ströher, Hans

2011-10-01

440

Physics at COSY-Juelich  

SciTech Connect

COSY, a storage and cooler synchrotron, which is fed by an injector cyclotron, is operated at Forschungszentrum Juelich (Germany). It provides phase space cooled polarized or unpolarized beams of protons and deuterons with momenta between 0.3 and 3.7 GeV/c for internal experiments and to external target stations. The major experimental facilities, used for the ongoing physics program, are ANKE and WASA (internal) and TOF (external). A new internal target station to investigate polarization build-up by spin-filtering (PAX) has recently been commissioned. COSY is the machine for hadron spin physics on a world-wide scale, which is also used for tests in conjunction with plans to build a dedicated storage ring for electric dipole moment (EDM) measurements of proton, deuteron and {sup 3}He. In this contribution recent results as well as future plans are summarized.

Stroeher, Hans [Institut fuer Kernphysik, Forschungszentrum Juelich, Juelich (Germany)

2011-10-21

441

Douvinet J., Delahaye D., Langlois P., 2010, Cartographies prventives du risque li aux crues rapides dans le nord de la France, in : Foltte J.-C. (dir.), Actes des Neuvimes Rencontres de Tho Quant, Besanon.  

E-print Network

Douvinet J., Delahaye D., Langlois P., 2010, Cartographies préventives du risque lié aux « crues T hé o Q ua nt Besa nç o n, 4 - 6 ma rs 2 0 09 http : //the ma. u niv- fc o mte .f r/ Cartographies M O T S - C L � S R � S U M � Crues rapides Risque Bassin parisien Morphologie Cartographies

Paris-Sud XI, Université de

442

National contributions to observed global warming  

NASA Astrophysics Data System (ADS)

There is considerable interest in identifying national contributions to global warming as a way of allocating historical responsibility for observed climate change. This task is made difficult by uncertainty associated with national estimates of historical emissions, as well as by difficulty in estimating the climate response to emissions of gases with widely varying atmospheric lifetimes. Here, we present a new estimate of national contributions to observed climate warming, including CO2 emissions from fossil fuels and land-use change, as well as methane, nitrous oxide and sulfate aerosol emissions While some countries’ warming contributions are reasonably well defined by fossil fuel CO2 emissions, many countries have dominant contributions from land-use CO2 and non-CO2 greenhouse gas emissions, emphasizing the importance of both deforestation and agriculture as components of a country’s contribution to climate warming. Furthermore, because of their short atmospheric lifetime, recent sulfate aerosol emissions have a large impact on a country’s current climate contribution We show also that there are vast disparities in both total and per-capita climate contributions among countries, and that across most developed countries, per-capita contributions are not currently consistent with attempts to restrict global temperature change to less than 2 °C above pre-industrial temperatures.

Damon Matthews, H.; Graham, Tanya L.; Keverian, Serge; Lamontagne, Cassandra; Seto, Donny; Smith, Trevor J.

2014-01-01

443

Contributions of Psychology to War and Peace  

ERIC Educational Resources Information Center

The contributions of American psychologists to war have been substantial and responsive to changes in U.S. national security threats and interests for nearly 100 years. These contributions are identified and discussed for four periods of armed conflict: World Wars I and II, the Cold War, and the Global War on Terror. In contrast, about 50 years…

Christie, Daniel J.; Montiel, Cristina J.

2013-01-01

444

Swiss contribution to water hammer theory  

Microsoft Academic Search

Swiss hydraulic engineers have significantly contributed to the understanding of water hammer, based partly on the advances of the Italians Ménabréa and Allievi. The contributions of Michaud, Strickler, Schnyder and Jaeger are particularly discussed in the light of modern developments, and biographies on the latter two individuals are added. It is concluded that the phenomenon of water hammer has been

Willi H. Hager

2001-01-01

445

Cooperatives' contributions to a plural economy  

E-print Network

23 Cooperatives' contributions to a plural economy Jérôme Blanc* and Denis Colongo** T he European economy(1) . The central theme of the conference was the contributions of cooperatives to a plural economy and solidarity economy and elsewhere, and some of them draw on Karl Polanyi's conceptual framework (a key

Paris-Sud XI, Université de

446

Capabilities and Contributions of Unwed Fathers  

ERIC Educational Resources Information Center

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

Lerman, Robert I.

2010-01-01

447

Gould's Rcal Contribution J David Archibald  

E-print Network

sour view of how Stephen Jay Gould's work and legacy has fared at the hands of neolltologists. I agreeGould's Rcal Contribution J David Archibald Skeptic; 201 1; 16,3; General Interest Module pg. 12 FORUM Gould's Real Contribution In his review/essJY (Vol. 16, No. I), Don;lld Prothero takes a rather

Archibald, J. David

448

Factors Contributing to Institutions Achieving Environmental Sustainability  

ERIC Educational Resources Information Center

Purpose: The purpose of this paper is to determine what factors contributed to three universities achieving environmental sustainability. Design/methodology/approach: A case study methodology was used to determine how each factor contributed to the institutions' sustainability. Site visits, fieldwork, document reviews, and interviews with…

James, Matthew; Card, Karen

2012-01-01

449

Magnetostrictive contribution to Poisson ratio of galfenol  

NASA Astrophysics Data System (ADS)

In this work we present a detailed study on the magnetostrictive contribution to Poisson ratio for samples under applied mechanical stress. Magnetic contributions to strain and Poisson ratio for cubic materials were derived by accounting elastic and magneto-elastic anisotropy contributions. We apply our theoretical results for a material of interest in magnetomechanics, namely, galfenol (Fe1-xGax). Our results show that there is a non-negligible magnetic contribution in the linear portion of the curve of stress versus strain. The rotation of the magnetization towards [110] crystallographic direction upon application of mechanical stress leads to an auxetic behavior, i.e., exhibiting Poisson ratio with negative values. This magnetic contribution to auxetic behavior provides a novel insight for the discussion of theoretical and experimental developments of materials that display unusual mechanical properties.

Paes, V. Z. C.; Mosca, D. H.

2013-09-01

450

Sciencesand PhysicalEducation  

E-print Network

· Technology Education · Physical Education and Sport Coaching · Health Education · Outdoor Education Technology Physical Education and Sport Coaching Health Outdoor & Environmental Education Olympic Studies Research Science Maths Technology Physical Education and Sport Coaching Health Outdoor & Environmental

Hickman, Mark

451

Find a Physical Therapist  

MedlinePLUS

... Practice) e.g., Hunt, Doug or Old Town Physical Therapy 2 Refine Your Search by Practice Area (Optional) ... database of physical therapist members of the American Physical Therapy Association (APTA) for the exclusive purpose of finding ...

452

(g-2){sub } and physics beyond the Standard Model  

Microsoft Academic Search

A 3 deviation has been firmly established between the experimental and the Standard Model value of the muon magnetic moment. The reliability of this deviation is emphasized. Potential contributions of very different types of physics beyond the Standard Model (SM) are compared. Supersymmetry fits particularly well. Examples of the impact and the importance of (g-2){sub } for understanding new physics

Stoeckinger; Dominik

2009-01-01

453

(g-2)mu and physics beyond the Standard Model  

Microsoft Academic Search

A 3 sigma deviation has been firmly established between the experimental and the Standard Model value of the muon magnetic moment. The reliability of this deviation is emphasized. Potential contributions of very different types of physics beyond the Standard Model (SM) are compared. Supersymmetry fits particularly well. Examples of the impact and the importance of (g-2)mu for understanding new physics

Dominik Stöckinger

2009-01-01

454

The role of the physical therapist in hospice care  

Microsoft Academic Search

The role of the physical therapist in hospice care is different from the role the therapist plays when a member of a rehabilitation team. This article will address the need for a fundamental role change and offer suggestions for ways physical therapists can contribute to the care of the hospice patient. In working with hospice patients, therapists must, for the

Susan Ebel; Karla Langer

1993-01-01

455

Student Perceptions of a Conceptual Physical Education Activity Course  

ERIC Educational Resources Information Center

Conceptual physical education (CPE) courses are typically included in university course work to provide students knowledge and skills to engage in physical activity for life. The purpose of this study was to identify CPE course characteristics that contributed to positive and negative student perceptions. Participants included 157 undergraduates…

Jenkins, Jayne M.; Jenkins, Patience; Collums, Ashley; Werhonig, Gary

2006-01-01

456

Research on Effective Teaching in Elementary School Physical Education  

ERIC Educational Resources Information Center

The perspective of this article is that the purpose of the elementary physical education program is the development of a physically active lifestyle. We discuss the relative contribution of the development of motor skills, fitness, content related to encouraging participation, and the affective goals of the program to the development of a…

Rink, Judith E.; Hall, Tina J.

2008-01-01

457

Explaining Outsourcing in Health, Sport and Physical Education  

ERIC Educational Resources Information Center

Outsourcing is a complex, controversial and pervasive practice that is increasingly becoming a matter of concern for educational researchers. This article contributes to this literature by examining outsourcing practices related to health, sport and physical education (HSPE). Specifically, it reports data on specialist health and physical…

Williams, Benjamin J.; Macdonald, Doune

2015-01-01

458

Physical Education Teacher Effectiveness in a Public Health Context  

ERIC Educational Resources Information Center

The health benefits of physical activity are well documented, and the important role that schools and physical education (PE) can play in reducing sedentary behavior and contributing to population health has been identified. Although effective teaching is ultimately judged by student achievement, a major component of teacher and school…

McKenzie, Thomas L.; Lounsbery, Monica A. F.

2013-01-01

459

Physical access to primary health care in Andean Bolivia  

Microsoft Academic Search

Limited physical access to primary health care is a major factor contributing to the poor health of populations in developing countries, particularly in mountain areas with rugged topography, harsh climates and extensive socioeconomic barriers. Assessing physical access to primary health care is an important exercise for health care planners and policy makers. The development of geographic information system (GIS) technology

Baker Perry; Wil Gesler

2000-01-01

460

Controlling Parenting and Physical Aggression during Elementary School  

ERIC Educational Resources Information Center

The goal of the present study was to examine whether controlling parenting contributes to the problem of physical aggression. Developmental trajectories of children's physical aggression were modeled from yearly teachers' ratings, from ages 6 to 12. Multinomial logistic regressions (N = 1,508) served to identify risk factors that distinguish…

Joussemet, Mireille; Vitaro, Frank; Barker, Edward D.; Cote, Sylvana; Nagin, Daniel S.; Zoccolillo, Mark; Tremblay, Richard E.

2008-01-01

461

Publications in the History of Physics During 1973  

ERIC Educational Resources Information Center

Analyzes more than 50 books and 14 periodicals for contributions to the history of physics. Recurring most frequently are topics in optics, ether, relativity, mechanics and atomic or nuclear physics although, historically, the works range from the 5th century B.C. to present times. (Author/CP)

Brush, Stephen G.

1975-01-01

462

Patients' perception of the nursing contribution to gastric band surgery.  

PubMed

Gastric banding is an established and effective form of weight-loss surgery. However, the nursing contribution to it remains largely unexplored. Using semi-structured interviews, this study explored the experiences and opinions of 20 purposively recruited patients about their nurses' contribution to weight-loss surgery. The data were analysed using thematic analysis. Three themes emerged. First, the provision of knowledge and fostering of understanding, both before and after surgery, focusing on information that addresses patients'needs. Second, staying in touch throughout the treatment period,being available whenever problems arise and advice or interventions are needed. The third theme concerned qualities demonstrated by the nurses. Open-minded patient engagement combined with person centered care fostered confidence in patients and promoted a close therapeutic relationship. Nurses make a substantial contribution to weight-loss surgery, caring for their patients' physical, surgical and,most importantly, psychosocial needs. Their role descriptions should emphasise the psychological, supportive aspects of this role. PMID:24605393

Pfeil, Michael

463

New Physics Search in Flavour Physics  

SciTech Connect

With the running B, kaon and neutrino physics experiments, flavour physics takes centre stage within today's particle physics. We discuss the opportunities offered by these experiments in our search for new physics beyond the SM and discuss their complementarity to collider physics. We focus on rare B and kaon decays, highlighting specific observables in an exemplary mode. We also comment on the so-called B {yields} {pi}{pi} and B {yields} K{pi} puzzles. Moreover, we briefly discuss the restrictive role of long-distance strong interactions and some new tools such as QCD factorization and SCET to handle them.

Hurth, Tobias; /CERN /SLAC

2006-01-04

464

[Approaching Physically Inactive -Elderly for Physical Activity.  

PubMed

The majority of elderly persons are still not sufficiently physically active. Therefore the aim of this study was to investigate different approaches (physical activity courses, poster, online-survey) for activating elderly to participate in physical activity. The most effective approach was target group physical activity courses with which higher course participa-tion rates in men as well as in people with lower levels of education were achieved. Referring to the transtheoretical model (TTM) it is necessary for future analyses of target group approaches to consider more intensely the initial motivational position of physically inactive elderly. PMID:24756334

Allmer, H; Allmer, M; Euskirchen, J; Froböse, I; Wallmann, B; Walter, T; Walschek, R

2014-04-22

465

Computational Physics in the Undergraduate Physics Curriculum  

NASA Astrophysics Data System (ADS)

Recent efforts to incorporate computational physics in the undergraduate physics curriculum have made use of Matlab, IDL, Maple, Mathematica, Fortran, and C^1 as well as Java.^2 The benefits of similar efforts in our undergraduate physics curriculum are that students learn ways to go beyond what they learn in the classroom and use computational techniques to explore realistic physics applications. In so doing students become better prepared to perform undergraduate research that will be useful throughout their scientific careers.^3 Our standard computational physics course uses some of the above tools.^1 More recently, we have developed a first draft of a textbook for the junior level mechanics physics course that incorporates computational techniques. The text being developed in addition to employing the invaluable traditional analytical approach to problem solving, it incorporates computational physics to build on those problems. In particular, the course makes use of students abilities to use programming to go beyond the analytical approach and complement their understanding. Selected examples of representative lecture problems will be presented. ^1 ``Computation and Problem Solving in Undergraduate Physics,'' David M. Cook, Lawrence University (2003), http://www.lawrence.edu/dept/physics/ccli. ^2 ``Simulations in Physics: Applications to Physical Systems,'' H. Gould, J. Tobochnik, and W Christian; see also, http://www.opensourcephysics.org. ^3 R. Landau, APS Bull. Vol 50, No.1, 1069 (2005)

Hasbun, J. E.

2006-03-01

466

History and Evolution of Physics  

NSDL National Science Digital Library

This Topic in Depth explores the history and evolution of the field of physics. The first website, created by the Institute of Physics, offers an interactive timetable of the development of physics from the ancient philosophers during the Bronze Age to the present research in quantum mechanics and relativity (1). The website illustrates the links between scientists and eras. Second, the US Department of Energy provides a synopsis of the work of the nuclear physics research program and the high-energy physics program since the 1950s (2). Users can also discover current research highlights and papers. The third website features an excerpt from a biography of Josiah Willard Gibbs by a student of his, Lynde Phelps Wheeler (3). Along with a download of a paper discussing the history of thermodynamics, the website supplies a download of a paper Carnot wrote about power in 1824. Fourth, physicist Patricia Schwartz presents a brief timeline of the evolution of mathematics and theoretical physics since the Babylonians established the metric of flat, two-dimensional space (4 ). Students can find an additional timeline of string theory dating back to the Kaluza-Klein Theory in 1921. The fifth website, developed by Lawrence Berkeley National Laboratory, is a section of an X-ray data book exploring the history of synchrotron radiation (5). The website discusses numerous historical aspects include the development of storage rings and the optimization of these with lower emittance and long straight sections for undulators. Sixth, John Bahcall, at the Institute for Advanced Study, offers popular papers on the history of solar neutrinos (6). Anyone interested in learning about the research of solar neutrinos should visit this website. The seventh website is a pdf file of a paper written by the President of the Italian Physical Society, Renato Angelo Ricci, detailing the work of Enrico Fermi and his contributions to the field of nuclear physics (7). This paper can help users who have some prior knowledge of nuclear physics understand the greatness of Fermi's work. Lastly, the University of Oxford provides images of scientific instruments from the medieval and renaissance periods of Europe held at four museums in Europe (8). Students can learn about the uses of the instruments and their origin.

467

Evaluation of potentially modifiable physical factors as predictors of health status in knee osteoarthritis patients referred for physical therapy  

Microsoft Academic Search

The purpose of this cross sectional study was to estimate the contributions of potentially modifiable physical factors to variations in perceived health status in knee osteoarthritis (OA) patients referred for physical therapy.Health status was measured by three questionnaires: Knee injury and Osteoarthritis Outcome Score (KOOS); Knee Outcome Survey — Activities of Daily Living Scale (KOS-ADLS); and Medical Outcomes Study —

Rui Soles Gonçalves; João Páscoa Pinheiro; Jan Cabri

468

Few-body physics  

E-print Network

Few-body hadronic observables play an essential role in a wide number of processes relevant for both particle and nuclear physics. In order for Lattice QCD to offer insight into the interpretation of few-body states, a theoretical infrastructure must be developed to map Euclidean-time correlation functions to the desired Minkowski-time few-body observables. In this talk, I review the formal challenges associated with the studies of such systems via Lattice QCD, as first introduced by Maiani and Testa, and I also review the methodology to circumvent said limitations. The first main example of the latter is the formalism by Luscher to analyze elastic scattering and a second is the method by Lellouch and Luscher to analyze weak decays. I discus recent theoretical generalizations of these frameworks that allow for the determination of scattering amplitudes, resonances, nonlocal contribution to matrix elements, and form factors below and above inelastic thresholds. Finally, I outline outstanding problems, including those that are now beginning to be addressed.

Raúl A. Briceño

2014-11-25

469

STANFORD UNIVERSITY DEPARTMENT OF PHYSICS  

E-print Network

. Copies of this Plan are located in the Dean's office, The Physics Department Administrative office matter, gravitational physics, astrophysics, atomic physics, nuclear physics, accelerator physicsSTANFORD UNIVERSITY DEPARTMENT OF PHYSICS EMERGENCY PLAN Last updated on October, 2004

Wechsler, Risa H.

470

Hansen, Murphy, Receive Mineral and Rock Physics Graduate Research Awards  

NASA Astrophysics Data System (ADS)

Lars N. Hansen and Caitlin A. Murphy were awarded the 2013 Mineral and Rock Physics Graduate Research Award, given annually to one or more promising young scientists for outstanding contributions achieved during their Ph.D. research. Recipients of this award are engaged in experimental and/or theoretical studies of Earth and planetary materials with the purpose of unraveling the physics and chemistry that govern their origin and physical properties.

2014-08-01

471

The lost art of the history and physical.  

PubMed

The important contribution of the history and physical in making a correct medical diagnosis has been known for centuries. Despite this, these skills are being undermined by technology that many physicians mistakenly believe to be the new gold standard. The authors report 2 cases in which the history and physical trumped technology in making the correct diagnosis. Medical educators need to reemphasize the importance of the history and physical. This will require changes in curriculum and intense faculty development. PMID:25247755

Natt, Bhupinder; Szerlip, Harold M

2014-11-01

472

Gian Domenico Cassini in Bologna and his contributions to the assessment of the planetary system  

Microsoft Academic Search

G. D. Cassini was hired as a professor of astronomy in Bologna in 1649, at the age of only 24, and left for Paris in 1669, when he was 44. We will outline in this Paper his major contributions to astronomy during those year according to the judgement of the scholars : the demonstration of the physical inequality of the

A. Braccesi

1998-01-01

473

Actin-like cytoskeleton filaments contribute to cell mechanics in bacteria  

E-print Network

Actin-like cytoskeleton filaments contribute to cell mechanics in bacteria Siyuan Wanga,c , Hugo cytoskeleton largely governs the physical shape and mechanical properties of eukaryotic cells. In bacteria in eukaryotes. optical trapping Escherichia coli MreB Like all biological organisms, bacteria must constantly

Petta, Jason

474

Group contribution method with SAFT EOS applied to vapor liquid equilibria of various hydrocarbon series  

Microsoft Academic Search

A new group contribution method is proposed using the statistical associating fluid theory (SAFT) equation of state (EOS), in order to describe the thermodynamic properties of hydrocarbon series. The method is developed for vapor–liquid equilibrium (VLE) calculations for a large number of hydrocarbons, with the use of several group parameters. SAFT models are chosen for the physical meaning of their

Sofiane Tamouza; J.-Philippe Passarello; Pascal Tobaly; J.-Charles de Hemptinne

2004-01-01

475

Contribution of surface and subsurface layers of soil on wheat nutrition under fertilized and unfertilized conditions  

Microsoft Academic Search

A pot experiment was conducted to study the contribution of surface and subsurface layers of soil on wheat nutrition under fertilized and unfertilized conditions. Artificial columns of soils were used for this purpose. A column consisted of three layers of different soils, varying in their native P, and concomitant chemical and physical properties.A rise in the surface fertility increased the

I. M. Chhibba; G. S. Sekhon

1983-01-01

476

Individual muscle contributions to push and recovery subtasks during wheelchair propulsion  

E-print Network

Individual muscle contributions to push and recovery subtasks during wheelchair propulsion Jeffery wheelchair propulsion places considerable physical demand on the upper extremity and is one of the primary users. As a result, recent effort has focused on determining how various propulsion techniques influence

477

1 | P a g e Appeal of Parental Contribution Switching Contributing Parent  

E-print Network

1 | P a g e Appeal of Parental Contribution ­ Switching Contributing Parent The custodial parent, a review may be applicable - See Appeal of Parental Contribution ­ Step Parent Issues Supporting. · Appeal Coversheet ­ See attached or on reverse; #12;2 | P a g e Appeal Submission Cover Sheet - Switching

478

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

479

A STUDY OF MAJOR PHYSICAL DISORDERS AMONG THE ELDERLY DEPRESSIVES  

PubMed Central

Psychiatric evaluation and assessment of common physical illnesses and disabilities was carried out in elderly depressives (aged 60 years and above). Correlation, if any, was seen between depression and physical problems. The ‘patient group’ comprised of 40 drawn from MHI, Cuttack, having a depressive disorder (ICD-10). The ‘control group’ of 20 was drawn from the general population with no psychiatric disorder. The presence of physical illness was looked for in both groups. The patient group had physical illnesses, 76% of which were previously undiagnosed. The control group had physical illnesses 71% of which were previously diagnosed. Undiagnosed physical illnesses are more common among elderly patients with depression than among matched control. The physical illnesses contributed in two thirds of the patients. So careful detection and management of physical illness is of equal importance in the management of depression. PMID:21584092

Satapthy, Ramanand; Kar, Nilamadhab; Das, Indubhusan; Kar, Gopal Chandra; Pati, Tophan

1997-01-01

480

Determining the contribution of the energy systems during exercise.  

PubMed

One of the most important aspects of the metabolic demand is the relative contribution of the energy systems to the total energy required for a given physical activity. Although some sports are relatively easy to be reproduced in a laboratory (e.g., running and cycling), a number of sports are much more difficult to be reproduced and studied in controlled situations. This method presents how to assess the differential contribution of the energy systems in sports that are difficult to mimic in controlled laboratory conditions. The concepts shown here can be adapted to virtually any sport. The following physiologic variables will be needed: rest oxygen consumption, exercise oxygen consumption, post-exercise oxygen consumption, rest plasma lactate concentration and post-exercise plasma peak lactate. To calculate the contribution of the aerobic metabolism, you will need the oxygen consumption at rest and during the exercise. By using the trapezoidal method, calculate the area under the curve of oxygen consumption during exercise, subtracting the area corresponding to the rest oxygen consumption. To calculate the contribution of the alactic anaerobic metabolism, the post-exercise oxygen consumption curve has to be adjusted to a mono or a bi-exponential model (chosen by the one that best fits). Then, use the terms of the fitted equation to calculate anaerobic alactic metabolism, as follows: ATP-CP metabolism = A(1;) (mL . s(-1)) x t(1;) (s). Finally, to calculate the contribution of the lactic anaerobic system, multiply peak plasma lactate by 3 and by the athlete's body mass (the result in mL is then converted to L and into kJ). The method can be used for both continuous and intermittent exercise. This is a very interesting approach as it can be adapted to exercises and sports that are difficult to be mimicked in controlled environments. Also, this is the only available method capable of distinguishing the contribution of three different energy systems. Thus, the method allows the study of sports with great similarity to real situations, providing desirable ecological validity to the study. PMID:22453254

Artioli, Guilherme G; Bertuzzi, Rômulo C; Roschel, Hamilton; Mendes, Sandro H; Lancha, Antonio H; Franchini, Emerson

2012-01-01

481

7 CFR 983.72 - Contributions.  

Code of Federal Regulations, 2014 CFR

...AGRICULTURAL MARKETING SERVICE (MARKETING AGREEMENTS AND ORDERS; FRUITS, VEGETABLES, NUTS), DEPARTMENT OF AGRICULTURE PISTACHIOS GROWN IN CALIFORNIA, ARIZONA, AND NEW MEXICO Expenses and Assessments § 983.72 Contributions. The...

2014-01-01

482

7 CFR 983.72 - Contributions.  

Code of Federal Regulations, 2012 CFR

...AGRICULTURAL MARKETING SERVICE (Marketing Agreements and Orders; Fruits, Vegetables, Nuts), DEPARTMENT OF AGRICULTURE PISTACHIOS GROWN IN CALIFORNIA, ARIZONA, AND NEW MEXICO Expenses and Assessments § 983.72 Contributions. The...

2012-01-01

483

7 CFR 983.72 - Contributions.  

Code of Federal Regulations, 2013 CFR

...AGRICULTURAL MARKETING SERVICE (MARKETING AGREEMENTS AND ORDERS; FRUITS, VEGETABLES, NUTS), DEPARTMENT OF AGRICULTURE PISTACHIOS GROWN IN CALIFORNIA, ARIZONA, AND NEW MEXICO Expenses and Assessments § 983.72 Contributions. The...

2013-01-01

484

7 CFR 983.72 - Contributions.  

Code of Federal Regulations, 2010 CFR

...AGRICULTURAL MARKETING SERVICE (Marketing Agreements and Orders; Fruits, Vegetables, Nuts), DEPARTMENT OF AGRICULTURE PISTACHIOS GROWN IN CALIFORNIA, ARIZONA, AND NEW MEXICO Expenses and Assessments § 983.72 Contributions. The...

2010-01-01

485

7 CFR 983.72 - Contributions.  

Code of Federal Regulations, 2011 CFR

...AGRICULTURAL MARKETING SERVICE (Marketing Agreements and Orders; Fruits, Vegetables, Nuts), DEPARTMENT OF AGRICULTURE PISTACHIOS GROWN IN CALIFORNIA, ARIZONA, AND NEW MEXICO Expenses and Assessments § 983.72 Contributions. The...

2011-01-01

486

47 CFR 54.706 - Contributions.  

Code of Federal Regulations, 2010 CFR

...telecommunications services. (d) Entities providing open video systems (OVS), cable leased access, or direct broadcast satellite (DBS) services are not required to contribute on the basis of revenues derived from those services. The following...

2010-10-01

487

ORIGINAL CONTRIBUTION Effect of Simvastatin on Cognitive  

E-print Network

ORIGINAL CONTRIBUTION Effect of Simvastatin on Cognitive Functioning in Children of simvastatin on neuropsychological, neuro- physiological, and neuroradiological outcome measures in children, at an NF1 referral center at a Dutch university hospital. Intervention Simvastatin or placebo treatment

Silva, Alcino

488

7 CFR 927.45 - Contributions.  

Code of Federal Regulations, 2012 CFR

...Vegetables, Nuts), DEPARTMENT OF AGRICULTURE PEARS GROWN IN OREGON AND WASHINGTON Order Regulating...Assessments § 927.45 Contributions. The Fresh Pear Committee or the Processed Pear Committee may accept voluntary...

2012-01-01

489

7 CFR 927.45 - Contributions.  

Code of Federal Regulations, 2013 CFR

...VEGETABLES, NUTS), DEPARTMENT OF AGRICULTURE PEARS GROWN IN OREGON AND WASHINGTON Order Regulating...Assessments § 927.45 Contributions. The Fresh Pear Committee or the Processed Pear Committee may accept voluntary...

2013-01-01

490

7 CFR 927.45 - Contributions.  

Code of Federal Regulations, 2010 CFR

...Vegetables, Nuts), DEPARTMENT OF AGRICULTURE PEARS GROWN IN OREGON AND WASHINGTON Order Regulating...Assessments § 927.45 Contributions. The Fresh Pear Committee or the Processed Pear Committee may accept voluntary...

2010-01-01

491

7 CFR 927.45 - Contributions.  

Code of Federal Regulations, 2014 CFR

...VEGETABLES, NUTS), DEPARTMENT OF AGRICULTURE PEARS GROWN IN OREGON AND WASHINGTON Order Regulating...Assessments § 927.45 Contributions. The Fresh Pear Committee or the Processed Pear Committee may accept voluntary...

2014-01-01

492

7 CFR 927.45 - Contributions.  

Code of Federal Regulations, 2011 CFR

...Vegetables, Nuts), DEPARTMENT OF AGRICULTURE PEARS GROWN IN OREGON AND WASHINGTON Order Regulating...Assessments § 927.45 Contributions. The Fresh Pear Committee or the Processed Pear Committee may accept voluntary...

2011-01-01

493

ORIGINAL CONTRIBUTION Rheological characterization of asphalt  

E-print Network

ORIGINAL CONTRIBUTION Rheological characterization of asphalt in a temperature Abstract A new technique for parallel rheological charac- terization of asphalt in a combinatorial squeeze at a single temperature. Keywords Combination rheometer. Squeeze flow. Asphalt Introduction Asphalt

Mather, Patrick T.

494

20 CFR 345.111 - Contribution reports.  

Code of Federal Regulations, 2012 CFR

...reported on Form DC-1. Employers shall enter on the employer's quarterly contribution report, prior to any additions or subtractions, the amount of creditable compensation appearing on payrolls or other disbursement documents for the corresponding...

2012-04-01

495

20 CFR 345.111 - Contribution reports.  

Code of Federal Regulations, 2013 CFR

...reported on Form DC-1. Employers shall enter on the employer's quarterly contribution report, prior to any additions or subtractions, the amount of creditable compensation appearing on payrolls or other disbursement documents for the corresponding...

2013-04-01

496

20 CFR 345.111 - Contribution reports.  

Code of Federal Regulations, 2011 CFR

...reported on Form DC-1. Employers shall enter on the employer's quarterly contribution report, prior to any additions or subtractions, the amount of creditable compensation appearing on payrolls or other disbursement documents for the corresponding...

2011-04-01

497

20 CFR 345.111 - Contribution reports.  

Code of Federal Regulations, 2010 CFR

...reported on Form DC-1. Employers shall enter on the employer's quarterly contribution report, prior to any additions or subtractions, the amount of creditable compensation appearing on payrolls or other disbursement documents for the corresponding...

2010-04-01

498

20 CFR 345.111 - Contribution reports.  

Code of Federal Regulations, 2014 CFR

...reported on Form DC-1. Employers shall enter on the employer's quarterly contribution report, prior to any additions or subtractions, the amount of creditable compensation appearing on payrolls or other disbursement documents for the corresponding...

2014-04-01

499

7 CFR 958.46 - Contributions.  

Code of Federal Regulations, 2012 CFR

...Agreements and Orders; Fruits, Vegetables, Nuts), DEPARTMENT OF AGRICULTURE ONIONS GROWN IN CERTAIN DESIGNATED COUNTIES IN IDAHO, AND MALHEUR COUNTY, OREGON Order Regulating Handling Expenses and Assessments § 958.46 Contributions....

2012-01-01

500

Contributions to automated realtime underwater navigation  

E-print Network

This dissertation presents three separate-but related-contributions to the art of underwater navigation. These methods may be used in postprocessing with a human in the loop, but the overarching goal is to enhance vehicle ...

Stanway, Michael Jordan

2012-01-01