Search results for "évolution"
showing 10 items of 209 documents
Le sabotage des lignes ferroviaires, la Révolution et les pouvoirs en 1848
2017
International audience
La LCR réfléchie par les comptes rendus : retour sur les années 2007/2008 (Le compte rendu, discours d'ordre ?). Variations autour de Jean-Paul Salle…
2012
International audience; La LCR réfléchie par les comptes rendus : retour sur les années 2007/2008 (Le compte rendu, discours d'ordre?) Variations autour de Jean-Paul Salles, La Ligue communiste révolutionnaire. Instrument du grand soir ou lieu d'apprentissage?, Rennes, PUR, 2005. Jean-Paul Salles a publié sa thèse consacrée à la Ligue communiste révolutionnaire aux PUR en 2005. Il ne s'agit pas ici d'en discuter l'apport, mais plutôt de prendre au mot le jeu des comptes rendus de l'ouvrage, escomptant qu'ainsi advienne une esquisse singulière de la LCR, objet des comptes rendus. Travailler cette réception critique implique une courte description du compte rendu dans le dispositif de l'éditi…
Justice des Lumières et guillotine: un problème philosophique
2012
In "Justice during the Enlightenment and the Guillotine: a Philosophical Problem", Luigi Delia reconsiders the dispute over capital punishment in the France of the Ancien Regime, and especially Guillotin's proposed reform, linking the maintenance of the death penalty to the idea that the use of a mechanical device for its implementation works in favour of a more democratic, secular and humane penal system. Without attempting to establish a direct connection between the Enlightenment and the guillotine in an instrumental relationship of cause and effect, Luigi Delia raises the question of how the two phenomena are interrelated: in what way is the guillotine dependent on the legal culture of …
Study of the action of phosphate ions contained in the mixing water of the hydration of a Portland cement.
2005
Cementation is considered as the most attractive solution for the conditioning of low and intermediate radioactive wastes. The species contained in these wastes can strongly influence the reactivity of the cement pastes, it is in particular the case of the ortho-phosphate ions which are found in the evaporation concentrates. The aim of our work was to determine the influence of these ions on the hydration and the rheological properties of the cement pastes at early age as well as the mechanical and physical properties on the hardened material.
Tous descendants de chasseurs-cueilleurs ! Nos cerveaux le savent…
2017
La psychologie évolutionniste ne cesse de nous rappeler que nous sommes tous descendants de chasseurs-cueilleurs qui ont réussi à résoudre des problèmes adaptatifs, comme trouver de la nourriture, se protéger des prédateurs, rencontrer un partenaire. Si nous pouvons l'ignorer en tant qu'individu, comme le présent ouvrage espère le démontrer à ses lecteurs, nos cerveaux le savent... La psychologie évolutionniste, en se penchant sur le passé de notre espèce, permet de mieux comprendre le pourquoi de nos comportements présents.Ce livre est focalisé sur des études expérimentales (plus de 180 expériences relatées) de psychologie évolutionniste. Il s'adresse aux étudiants en psychologie et à tout…
Biovigilance flore adventice le point dans trois bassins de production de colza
2013
EA SPE EcolDur; National audience
Genetic determinisms, evolution and detection of non-target-site based resistance to herbicides inhibiting acetolactate-synthase in rye-grass (Lolium…
2016
The aim of this study is to unravel the genetic determinism of non-target-site resistance (NTSR) to herbicides inhibiting acetolactate-synthase (ALS) in the major weed rye-grass (Lolium sp.), and to estimate the feasibility of NTSR diagnosis based on genetic data. On the one hand, this work contributes to the understanding of the processes driving the evolution of NTSR to herbicides, and on the other hand it lays the foundations for the development of a diagnosis tool to identify NTSR to ALS inhibiting herbicides. - Using a quantitative transcriptome sequencing approach, we showed that NTSR evolve by recurrent selection of higher and higher constitutive expression levels of genes involved i…
Analyze and simulation a dynamic of soil indicators fertility under different agricultural management practices in cotton area of Togo
2011
Using data observed during 20 to 40 years in different agro-ecosystems of Togo, we analyzed soil fertility dynamic under different agricultural management practices. Tree soil C models of varying complexity were tested, and the most accurate in terms of soil C dynamics description in these tropical soils was associated with the QUEFTS model and with nutrient partial balance to analyze the effect of each agricultural management practice. Results indicated that, although fertilizers N, P and K were continuously applied at a recommended rate by the research (RR) or at this rate increased in 50% (1.5RR), initial cotton and cereals yields of 1.5 to 2 t ha˗1 and 2 to 3 t ha˗1, respectively, decre…
Le rôle écologique des bonobos : service écologique de dispersion de graine en forêt du Congo
2012
Bonobos (Pan paniscus) are threatened with extinction. They are the largest primates, and the only apes (except human), of the southern bank of the Congo Basin. Along with chimpanzees, they are our closest living relatives and are studied by anthropologists to include/understand our hominid origins; but what about their functional role in the forest? Would their disappearance have serious consequences for forest ecology? Answering this question is the aim of this new project, with several years of observations of a free-ranging habituated group of bonobos on the LuiKotale research station (DR Congo). In this tropical rainforest, the very great majority of plants need animals to reproduce an…
Human-induced hybridization and population bottleneck : population genetics, morphometrics and parasitology applied to the invaded and invasive tilap…
2011
Biological invasions are recognized as a significant evolutionary factor over short time scales. In particular, their effect is well recorded on the genetic structure of populations, the patterns of phenotypic evolution and the richness of parasite fauna associated to invasive populations. This study aims at quantifying the consequences of a biological invasion according to these three levels (genetical, phenotypical and parasitological) taking as example the Mozambique tilapia Oreochromis mossambicus. This African cichlid is characterized by an unusual conservation status since it is both (i) ranked among the world’s worst invasive species due to its global dispersion during the 20th centu…