Search results for "Environment"
showing 10 items of 28487 documents
Denitrification
2011
Survie et/ou réactivation de microorganismes du sol sous hautes pressions gazeuses
2012
National audience; Le sol constitue une réserve considérable de microorganismes représentatifs de nombreuses communautés cellulaires. Les recherches reposent sur l’hypothèse qu’il existe, dans les échantillons de sol, des communautés microbiennes adaptées à des conditions physiques (pression, température) très différentes de celles rencontrées dans nos laboratoires : soit parce que les conditions de milieu ont changé (sol), soit parce que les conditions de prélèvement sont très différentes des conditions de culture (grands fonds marins). Dans cette optique, l’utilisation des hautes pressions gazeuses (200-1000 bars dans un premier temps) est envisagée afin d’essayer de réactiver des microor…
Listeria monocytogenes
2017
Prod 2017-266 équipe EA UB BIOME; National audience; résumé du livre : Pour garantir et maîtriser la sécurité microbiologique des aliments et prévenir les crises sanitaires alimentaires, la connaissance et la surveillance des microorganismes pathogènes depuis la production primaire jusqu’à la distribution des denrées alimentaires en passant par la transformation, sont indispensables. Cet ouvrage de référence traite des dangers microbiologiques alimentaires majeurs (microorganismes infectieux ou toxines d’origine microbienne) et des risques associés pour l’Homme. Illustré de nombreux schémas et tableaux de synthèse, il fait un point complet sur les notions fondamentales de microbiologie géné…
Isolation and characterization of microsatellite markers in the liver fluke (Fasciola hepatica)
2004
PRIMER NOTE; International audience; Six microsatellite markers were isolated from Fasciola hepatica, a re-emerging parasite that causes important veterinary and public health problems. In a sample of 52 liver flukes from a region of hyperendemicity (Bolivian Altiplano), five microsatellite were polymorphic. Our results showed that liver flukes present important genetic variability, suggesting a preferential outcrossing reproduction mode for this hermaphroditic parasite.
Orthogonal switching of AMS axes during type-2 fold interference : Insights from integrated X-ray computed tomography, AMS and 3D petrography
2017
We applied X-ray computed microtomography (μ-CT) in combination with anisotropy of magnetic susceptibility (AMS) analysis to study metamorphic rock fabrics in an oriented drill core sample of pyrite-pyrrhotite-quartz-mica schist. The sample is extracted from the Paleoproterozoic Martimo metasedimentary belt of northern Finland. The μ-CT resolves the spatial distribution, shape and orientation of 25,920 pyrrhotite and 153 pyrite grains localized in mm-thick metapelitic laminae. Together with microstructural analysis, the μ-CT allows us to interpret the prolate symmetry of the AMS ellipsoid and its relationship to the deformation history. AMS of the sample is controlled by pyrrhotite porphyro…
Quel statut pour les espaces de montagne durant l'âge du Bronze ? Regards croisés sur les approches société-environnement dans les Pyrénées occidenta…
2005
After having been neglected for some time, mountain environments have now become an important research area for the study of anthropogenic impact on the environment and the interactions of societies with their environments. The recent development of several interdisciplinary programs in the Alps and in the Pyrenees reveals the interest and the scientific questions associated with these domains. In the Pyrenees, the work undertaken in the Basque Country illustrates the utility of the development of multidisciplinary research on a large scale, which is both diachronic and has a high resolution chronology. Combining environmental and archaeological data, allows us to present an image of popula…
L'uomo e il suo ambiente. Al di là dell'opposizione natura/cultura
2021
Il saggio rappresenta la prosecuzione delle ultime ricerche di Claude Calame, grecista di fama mondiale: dopo il Prometeo genetista (Sellerio, Palermo 2016, ed. or. Paris 2011), adesso lo studioso svizzero propone una riflessione sui rapporti tra l’essere umano e il suo ambiente, maturata sulla base del serrato confronto tra l’idea originaria, greca, di physis e la nozione di ‘natura’ per come essa si è sviluppata a partire dal pensiero illuministico e deterministico. Dei cinque capitoli in cui il saggio è complessivamente strutturato, il primo (dal titolo En Grèce ancienne : l’homme et son milieu) ricostruisce con accuratezza storico-filologica e acume critico il concetto greco di physis, …
Informační operace
2017
The author of this article points out various issues in information management of information operations. To ensure the attainment of high security it is essential to maintain and develop the information system to implement new technologies for the needs of conducted military operations. In the environment of the terrorism threat, is the need for developing IO; means of communication, identification elements, components for conducting intelligence, special and reconnaissance operations
Informační operace
2016
The author of this article points out various issues in information management of information operations. To ensure the attainment of high security it is essential to maintain and develop the information system to implement new technologies for the needs of conducted military operations. In the environment of the terrorism threat, is the need for developing IO; means of communication, identification elements, components for conducting intelligence, special and reconnaissance operations.
Particle chemical properties in the vertical column based on aircraft observations in the vicinity of Cape Verde Islands
2011
During the second Saharan Mineral Dust Experiment (SAMUM-2) field campaign, particles with geometric diameters (d) between ∼0.1 and 25 μm were collected on board of the Deutsches Zentrum für Luft- und Raumfahrt (German Aerospace Center, DLR) Falcon aircraft. Size, chemical composition and mixing state of aerosols sampled (spatially and vertically resolved) along the West African coastline and in the Cape Verde Islands region were determined by electron microscopy. A pronounced layer structure of biomass-burning aerosol and desert dust was present for all days during the sampling period from 23 January to 6 February. The aerosol composition of the small particles (d < 0.5 μm) was highly v…