A bimetric cosmological model based on Andrei Sakharov's twin universe approach

Autor: Jean-Pierre, Petit, Florent, Margnat, Hicham, Zejli

The standard cosmological model, based on Cold Dark Matter and Dark Energy ({\Lambda}CDM), faces several challenges. Among these is the need to adjust the scenario to account for he presence of vast voids in the large-scale structure of the universe,

Externí odkaz: http://arxiv.org/abs/2412.04644

Characterization of genetic determinants of the resistance to phylloxera, Daktulosphaira vitifoliae, and the dagger nematode Xiphinema index from muscadine background

Autor: Bernadette Rubio, Guillaume Lalanne-Tisné, Roger Voisin, Jean-Pascal Tandonnet, Ulysse Portier, Cyril Van Ghelder, Maria Lafargue, Jean-Pierre Petit, Martine Donnart, Benjamin Joubard, Pierre-François Bert, Daciana Papura, Loïc Le Cunff, Nathalie Ollat, Daniel Esmenjaud

Publikováno v: BMC Plant Biology, Vol 20, Iss 1, Pp 1-15 (2020)

Abstract Background Muscadine (Muscadinia rotundifolia) is known as a resistance source to many pests and diseases in grapevine. The genetics of its resistance to two major grapevine pests, the phylloxera D. vitifoliae and the dagger nematode X. inde

Externí odkaz: https://doaj.org/article/6760e80a69bb42b8a4f3f7a6c785555f

On the Poincaré Algebra in a Complex Space-Time Manifold

Autor: Jean-Pierre Petit, Gilles d'Agostini, Nathalie Debergh

Publikováno v: Journal of Modern Physics. 12:218-228

We extend the Poincare group to the complex Minkowski space-time. Special attention is paid to the corresponding algebra that we achieve through matrices as well as differential operators. We also point out the generalizations of the two Casimir oper

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::9987ff192ad98ff338f6b53fc7d68bf8
https://doi.org/10.4236/jmp.2021.123017

Regulation of anthocyanin and sugar accumulation in grape berry through carbon limitation and exogenous ABA application

Autor: Lina Wang, Eloïse Brouard, Duyen Prodhomme, Ghislaine Hilbert, Christel Renaud, Jean-Pierre Petit, Everard Edwards, Annette Betts, Serge Delrot, Nathalie Ollat, Sabine Guillaumie, Zhanwu Dai, Eric Gomès

Publikováno v: Food research international (Ottawa, Ont.). 160

To optimize vineyard management practices to adapt viticulture to climate change, knowledge of the regulation mechanism of metabolite accumulation under carbon source limitation and abscisic acid (ABA) application in grapes should be deepened. Here,

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::89f23848d2d1410bb3b6f7fa3f2fadce
https://pubmed.ncbi.nlm.nih.gov/36076369

Negative mass hypothesis in cosmology and the nature of dark energy

Autor: G. d’Agostini, Jean-Pierre Petit

Publikováno v: Astrophysics and Space Science
Astrophysics and Space Science, 2021, 354, pp.611-615. ⟨10.1007/s10509-014-2106-5⟩
Astrophysics and Space Science, Springer Verlag, 2021, 354, pp.611-615. ⟨10.1007/s10509-014-2106-5⟩

International audience; The observed acceleration of the universe arises a puzzling question. What is the nature of a dark energy that would cause this phenomenon? We recall the arguments against the existence of negative matter on General Relativity

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5d52bdb932426e8b7053c2310347bda4
https://hal.science/hal-03426503/document