OALib Journal期刊

ISSN: 2333-9721



匹配条件: “Veronique Seidel” ,找到相关结果约840条。
Jamal Elmezogi,Carol Clements,Veronique Seidel,Alexander Gray
International Research Journal of Pharmacy , 2013,
Abstract: Three active compounds obtained from the aerial parts of Abies nobilis and Pinus sylvestris isolated by different chromatographic techniques. Their structures were identified by NMR (1H, 13C, COSY, HMBC) spectroscopic and mass spectrometric data and established as catechin, dehydroabietic acid and Dihydroconiferyl alcohol. The isolated compounds were exhibited activity against blood stream form of parasite Trypanosoma brucei brucei (S 427).
Non-thermal right-handed sneutrino dark matter and the Omega_DM/Omega_b problem
Page, Veronique
High Energy Physics - Phenomenology , 2007, DOI: 10.1088/1126-6708/2007/04/021
Abstract: We argue that the superpartner of the Dirac right-handed neutrino is a prime candidate for dark matter created from a 'mattergenesis' mechanism. We show that due to the smallness of the Yukawa couplings, a right-handed sneutrino density created in the early Universe would not be erased by annihilations, which remain out of thermal equilibrium. It would also not be drowned by a later, additional production of right-handed sneutrinos, as the relic density of the non-thermal right-handed sneutrinos is found to be generally negligible compared to the observed dark matter density. Mild constraints on sneutrino masses and trilinear SUSY-breaking couplings are obtained. Possible mattergenesis scenarios are also mentioned
Pour une nouvelle approche de l'hispanité grace aux TICE - La formation d'enseignants d'espagnol langue étrangère Towards a new approach of Hispanic culture thanks to ICT - Beginners training for Spanish language teachers
Veronique Pugibet
ALSIC : Apprentissage des Langues et Systèmes d'Information et de Communication , 2006, DOI: 10.4000/alsic.151
Abstract: Si désormais les divers pays et cultures du monde hispanique figurent dans les programmes officiels de l'apprentissage de l'espagnol langue étrangère en France, l'approche qui en est proposée demeure encore souvent traditionnelle, une certaine vision de l'histoire et les "beaux" textes dominant largement. Comment amener les jeunes enseignants en formation initiale à porter un regard différent sur l'autre, à atteindre une véritable compétence culturelle dépassant la culture académique ? Nous rendrons compte dans notre étude de la spécificité de la formation initiale des professeurs d'espagnol qui, dorénavant, sont de plus en plus nombreux à être d'origine hispanophone. Nous exposerons leur parcours de formation sur et grace aux TICE afin de dépasser les clichés réducteurs initiaux comme en témoignent leur approche première sur Internet, et en vue d'atteindre un regard plus ouvert sur l'hispanité et des pratiques pédagogiques différentes. Despite the ongoing presence of several Hispanic countries and cultures in state programs concerning Spanish as a foreign language in French education, the suggested methodology remains very often traditional with a predominantly biased vision of history as well as texts that are considered "beautiful". How can we help young teachers in their initial training to have a different perception of the other, to reach a true cultural competence that surpasses academic culture? We will show in our study the details involved in a Spanish teacher's initial training since, as it appears, they tend to be more and more of Hispanic origin. We will describe their training history through and thanks to the TICE in order to overcome the reductive and stereotyping clichés as they move initially towards the use of Internet, and in order to reach out for a more open perception of the Hispanic World and of different pedagogical practices.
1986-1991 : Cinco a os de ejido colectivo en el sur de Jalisco
Veronique Munier
Espiral , 1994,
Erratum: Circulating microRNAs in Alzheimer's disease: the search for novel biomarkers
Veronique Dorval
Frontiers in Molecular Neuroscience , 2013, DOI: 10.3389/fnmol.2013.00038
EDELWEISS-II Dark Matter Search : status and first results
Veronique Sanglard
Physics , 2009, DOI: 10.1088/1742-6596/203/1/012037
Abstract: The EDELWEISS II experiment is devoted to the search for Weakly Interacting Massive Particles (WIMP) that would constitute the Dark Matter halo of our Galaxy. For this purpose, the experiment uses cryogenic germanium detectors, cooled down at 20 mK, in which the collision of a WIMP with an atomic nucleus produces characteristic signals in terms of ionization and elevation of temperature. We will present the preliminary results of the first operation of the detectors installed in the underground laboratory of the Frejus Tunnel (LSM), attesting to the very low radioactive background conditions achieved so far. New detectors, with a special electrode design for active rejection of surface events, have been shown to be suited for searches of WIMPs with scattering cross-sections on nucleon well below 10-8 pb. Preliminary results of WIMP search performed with a first set of these detectors are presented.
First determination of $f_+(0) |V_{us}|$ from a combined analysis of $τ\to Kπν_τ$ decay and $πK$ scattering with constraints from $K_{\ell3}$ decays
Veronique Bernard
Physics , 2013, DOI: 10.1007/JHEP06(2014)082
Abstract: We perform a combined analysis of $\tau\to K\pi \nu_\tau$ decay and $\pi K$ scattering with constraints from $K_{\ell3}$ data using a $N/D$ approach that fulfills requirements from unitarity and analyticity. We obtain a good fit of the $I=1/2$ $\pi K$ amplitude in the $P$ wave using the LASS data above the elastic region while in this region data are generated via Monte Carlo using the FOCUS results based on $D_{\ell 4}$ decay. The spectrum and branching ratio of $\tau\to K\pi \nu_\tau$ constrained by $K_{\ell3}$ decays are also well reproduced leading to $f_+(0) |V_{us}|= 0.2163 \pm 0.0014 $. Furthermore, we obtain the slope of the vector form factor $\lambda_+=(25.56 \pm 0.40) \times 10^{-3} $ while the value of the scalar form factor at the Callan-Treiman point is $\ln C=0.2062 \pm 0.0089$. Given the experimental precision our results are compatible with the Standard model.
The unstable integral homology of the mapping class groups of a surface with boundary
Veronique Godin
Mathematics , 2005,
Abstract: We construct a graph complex calculating the integral ho- mology of the bordered mapping class groups. We compute the ho- mology of the bordered mapping class groups of various surfaces. Using the circle action on this graph complex, we build a double complex and a spectral sequence converging to the homology of the unbordered mapping class groups. We compute the homology of the punctured mapping class groups associated to certain surfaces. Finally, we use Miller's operad to get the first Kudo-Araki and Browder operations on our graph complex. We also consider an unstable version of the higher Kudo-Araki-Dyer-Lashoff operations.
Higher string topology operations
Veronique Godin
Mathematics , 2007,
Abstract: Chas and Sullivan have defined an intersection-type product on the homology of the free loop space LM of an oriented manifold M. In this paper we show how to extend this construction to a topological conformal field theory of degree d. In particular, we get operations on the homology of LM which are parameterized by the homology of the moduli space of open-closed Riemann surfaces.
The bounded spherical functions for the free two step nilpotent Lie group
Veronique Fischer
Mathematics , 2010,
Abstract: In this paper, we give the expressions for the bounded spherical functions, or equivalently the spherical functions of positive type, for the free two-step nilpotent Lie groups endowed with the actions of orthogonal groups or their special subgroups. Next we deduce some results about the (Kohn) sub-Laplacian, and we compute the radial Plancherel measure.

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