Search results for "Trait"
showing 10 items of 1361 documents
Extraire des patterns pour améliorer l'idiomaticité de résumés semiautomatiques en finances : le cas du lexique support
2020
International audience; Cet article présente des travaux visant à développer un système de rédaction automatique de résumés de textes économiques et financiers en attachant une attention particulière à l’idiomaticité et à la fluidité de la langue d’arrivée. Pour ce faire, l’étude part d’un corpus de rapports périodiques de la Banque de France relevant des discours de conjoncture. Le travail linguistique permet de montrer qu’une rédaction des résumés ne s’attachant qu’à l’extraction terminologique et collocationnelle stricte ignore tout un pan de vocabulaire, saisi ici comme « lexique support », jouant un rôle important dans l’organisation cognitive du domaine. Sur cette base, le travail pré…
Do pollinator distributions underlie the evolution of pollination ecotypes in the Cape shrub Erica plukenetii?
2013
Background and aims According to the Grant-Stebbins model of pollinator-driven divergence, plants that disperse beyond the range of their specialized pollinator may adapt to a new pollination system. Although this model provides a compelling explanation for pollination ecotype formation, few studies have directly tested its validity in nature. Here we investigate the distribution and pollination biology of several subspecies of the shrub Erica plukenetii from the Cape Floristic Region in South Africa. We analyse these data in a phylogenetic context and combine these results with information on pollinator ranges to test whether the evolution of pollination ecotypes is consistent with the Gra…
Mercury levels in sediments of central Mediterranean Sea: a 150+ year record from box-cores recovered in the Strait of Sicily.
2006
To evaluate the degree of anthropogenic mercury pollution, Hg contents have been measured for box-core sediments sampled along three nearshore-offshore transects in the Strait of Sicily and well constrained for their mineralogy, bulk geochemistry and TOC%. Hg values are generally low (from 15 to 70 microg kg(-1)); however, depth profiles clearly display upcore rising concentrations (up to 202 microg kg(-1) near the SE Sicily coast) that are attributed to anthropogenic load. Based on (210)Pb chronology, these trends are more dramatic across the last 20-30 years. Geogenic influence is thought to explain some anomalies related to volcanic emission and geothermal activity. Combined effects due …
Lead contamination affects the primary productivity traits, biosynthesis of macromolecules and distribution of metal in durum wheat (Triticumdurum L.)
2021
Highlights • The growth, biosynthesis of pigments and other macromolecules appeared to be strong predictors in appraisal of Pb tolerance/susceptibility in durum wheat. • Germplasm of CBD59, CBD63 and CBD66 can be exploited for future selection and breeding programs. • The bioaccumulation of metal in grains of some cultivars of durum wheat much below than permissible limits set by FAO/WHO is of great significance owing to its implications for food safety.
Inferring species interactions from ecological survey data: a mechanistic approach to predict quantitative food webs of seed-feeding by carabid beetl…
2020
AbstractEcological networks are valuable for ecosystem analysis but their use is often limited by a lack of data because many types of ecological interaction, e.g. predation, are short-lived and difficult to observe or detect. There are different methods for inferring the presence of interactions, which we lack methods to predict interaction strengths and so use weighted network analysis.Here, we develop a trait-based approach suitable for creating quantitative networks, i.e. with varying interaction strengths. We developed the method for seed-feeding carabid ground beetles (Coleoptera: Carabidae) although the principles can be applied to other interactions.We used existing literature data …
Monuments à la régence. Représentations sculptées d’Anne d’Autriche et imaginaire du pouvoir
2020
Actes du colloque "La représentation sculpturale du pouvoir. La France, l'Italie et leur rayonnement en Europe à l'époque moderne" organisé par l'Ecole pratique des hautes études et la Société historique et littéraire polonaise, Paris, Bibliothèque polonaise, 17-18 mars 2016; International audience
The portrait of Dean MacCannell – towards an understanding of capitalism
2015
Certainly, the sociology of tourism has gained recognition over the last decades. This achievement was based on the legacy and contribution of many voices, but one of them deserves my personal admi...
A recent portrait of bioactive triazoles
2010
Scientists have extensively explored new synthetic routes in order to obtain 1,2,3- and 1,2,4-triazoles as they represent a very interesting class of compounds due to their wide range of biological activities such as antitumor, antiinflammatory, analgesic, antifungal, antibacterial, antiviral, etc. This mini review reports the synthesis and the biological activities of compounds containing a triazole moiety published since 2007. No attempt is made to provide a comprehensive literature overview, our aim is to highlight some more recent examples of synthetic biological active compounds. In particular, we focus on the applications of “click reactions” that allow the regioselective synthesis of…
A portrait of Jost Krippendorf
2014
The problem of sustainability emerged in last decades as a result of climate change and pollution produced by modern industry to the atmosphere. Seminal studies have contributed to give alternative...