Institution
Collège de France
Education•Paris, France•
About: Collège de France is a education organization based out in Paris, France. It is known for research contribution in the topics: Population & Dopamine. The organization has 6541 authors who have published 11983 publications receiving 648742 citations. The organization is also known as: College de France.
Topics: Population, Dopamine, Dopaminergic, Receptor, Neural crest
Papers published on a yearly basis
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TL;DR: In this paper, the authors define the notion of a closed star product and define the character of a star product as the cohomology class (in the cyclic bicomplex) of a well defined cocycle.
Abstract: We define the notion of a closed star product. A (generalized) star product (deformation of the associative product of functions on a symplectic manifold W) is closed iff integration over W is a trace on the deformed algebra. We show that for these products the cyclic cohomology replaces the Hochschild cohomology in usual star products. We then define the character of a closed star product as the cohomology class (in the cyclic bicomplex) of a well-defined cocycle, and show that, in the case of pseudodifferential operators (standard ordering on the cotangent bundle to a compact Riemannian manifold), the character is defined and given by the Todd class, while in general it fails to satisfy the integrality condition.
147 citations
TL;DR: A key role is demonstrated for the Wnt/β‐catenin pathway in liver embryonic growth and in controlling the fate of hepatoblasts, preventing them from differentiating toward the hepatocyte lineage, and guiding them to biliary ductal morphogenesis.
147 citations
TL;DR: The first measurements of the mass and width of the Z 0 at the DELPHI Collaboration at the LEP Collider were presented in this article, where the authors derived the measurements from the multihadronic final states produced in e + e − annihilations at several energies around the 0 mass.
147 citations
TL;DR: A simulation of 2D dry foams under quasistatic shear proposes a scenario for the onset and stability of the flow localization process in foams, which should remain valid for most athermal amorphous systems under creep flow.
Abstract: We have developed a realistic simulation of 2D dry foams under quasistatic shear. After a short transient, a shear-banding instability is observed. These results are compared with measurements obtained on real 2D (confined) foams. The numerical model allows us to exhibit the mechanical response of the material to a single plastication event. From the analysis of this elastic propagator, we propose a scenario for the onset and stability of the flow localization process in foams, which should remain valid for most athermal amorphous systems under creep flow.
147 citations
TL;DR: A large range of variations in melanin-concentrating hormone messenger RNA content between individuals was observed in food-deprived versus controls or refed rats suggesting that genetic or environmental factors may alter response in melan in-concence hormone gene activity after food deprivation.
146 citations
Authors
Showing all 6597 results
| Name | H-index | Papers | Citations |
|---|---|---|---|
| Pierre Chambon | 211 | 884 | 161565 |
| Irving L. Weissman | 201 | 1141 | 172504 |
| David R. Williams | 178 | 2034 | 138789 |
| Kari Alitalo | 174 | 817 | 114231 |
| Pierre Bourdieu | 153 | 592 | 194586 |
| Stanislas Dehaene | 149 | 456 | 86539 |
| Howard L. Weiner | 144 | 1047 | 91424 |
| Alain Fischer | 143 | 770 | 81680 |
| Yves Agid | 141 | 669 | 74441 |
| Michel Foucault | 140 | 499 | 191296 |
| Jean-Pierre Changeux | 138 | 672 | 76462 |
| Jean-Marie Tarascon | 136 | 853 | 137673 |
| K. Ganga | 132 | 272 | 99004 |
| Jacques Delabrouille | 131 | 354 | 94923 |
| G. Patanchon | 128 | 241 | 87233 |