Search results for "Pill"

Tunable source of infrared pulses in gas-filled hollow core capillary

2020

International audience; We report a tunable source that generates pulses in the infrared from an optical parametric amplification in a gas-filled hollow core capillary based on four-wave mixing process, in which the phase matching strongly depends on the gas pressure and the pump. In our case, we have generated pulses from 1 to 1.6 m in the sub-µJ level together with a parametric amplification in the visible.

Origin and diversity of testate amoebae shell composition: Example of Bullinularia indica living in Sphagnum capillifolium

2017

Testate amoebae are free-living shelled protists that build a wide range of shells with various sizes, shapes, and compositions. Recent studies showed that xenosomic testate amoebae shells could be indicators of atmospheric particulate matter (PM) deposition. However, no study has yet been conducted to assess the intra-specific mineral, organic, and biologic grain diversity of a single xenosomic species in a natural undisturbed environment. This study aims at providing new information about grain selection to develop the potential use of xenosomic testate amoebae shells as bioindicators of the multiple-origin mineral/organic diversity of their proximal environment. To fulfil these objective…

Characterisation and distribution of deposited trace elements transported over long and intermediate distances in north-eastern France using Sphagnum…

2015

Abstract Trace elements in the form of particulate matter can be transported downwind from their emission sources and may have negative effects on human health and ecosystems. The transport of trace elements is often studied by monitoring their accumulation in mosses. The aim of this study was to characterise and describe the distribution of deposited trace elements transported over long and intermediate distances in north-eastern France, a location far from the main emission sources. We analysed the trace element accumulation in Sphagnum capillifolium in 54 ombrotrophic peatlands distributed in six regions of France (Alps, Jura, Massif Central, Morvan, Rhone corridor and Vosges). The conce…

Solid papillary carcinoma with reverse polarity of the breast displays morphologic, immunohistochemical and molecular characteristics in comparison t…

2018

IF 6.655 (2017); International audience

Évaluation de la valeur pollinisatrice de la flore adventice de différents systèmes de culture

2017

EAGESTAD INRA; Les adventices dans les écosystèmes agricoles, en bord de champ comme dans la parcelle, sont une source de nectars et de pollen pour les pollinisateurs. Un indicateur évaluant la valeur pollinisatrice à partir des traits floraux a été développé pour différents groupes, abeilles, bourdons, syrphes, d’une part et papillons de l’autre. Deux méthodes d’agrégation de cet indicateur avec les sorties du modèles FLORSYS sont testées pour un ensemble de 181 systèmes de culture simulés sous FLORSYS.

Environmental spillovers and their impacts on housing prices: A spatial hedonic analysis

2015

This paper investigates the spatial dimension of environmental factors on housing prices. We develop spatial hedonic models to estimate the implicit prices of various environmental attributes. The spatial dimension can be interpreted in terms of local or global spillovers. We conduct an empirical study in the Loire estuary (France). We focus on natural areas and more artificialized ones (ocean frontage, wetlands, rivers, and noisy roads). We show that, depending on the spatial model used, the implicit price is more than just the estimated coefficient value and combines both a feedback effect and a propagation effect.

L'Aurignacien en Bourgogne méridionale

2010

International audience; Entre la fin du XIXe siècle et les années 1950, le sud de la Bourgogne était l’une des régions les plus importantes dans le domaine de la recherche sur le début du Paléolithique supérieur en France. Après les années 1950, l’attention des chercheurs s’est focalisée sur le site de Solutré et le Paléolithique supérieur évolué. Depuis le milieu des années 1990, une équipe de recherche de l’Université de Tübingen, dirigée par H. Floss, travaille sur cette région, poursuivant ainsi la tradition des recherches initiée par A. Arcelin et H. Breuil puis par J. Combier et H. Delporte. Malgré la longue histoire de la recherche dans cette région, il est ne…

L'obsolescence programmée a des petits frères !

2020

International audience; Retour sur les articles L. 441-3 à L. 441-5 du code de la consommation issus de la loi n° 2020-105 du 10 février 2020 relative à la lutte contre le gaspillage et à l'économie circulaire

Compte rendu de : Antoine Dreyfus, Les raisins du Reich. Quand les vignobles français collaboraient avec les nazis, Paris, Flammarion, 2021, 229 p.

2021

Guidance of surface elastic waves along a linear chain of pillars

2016

International audience; The propagation of surface elastic waves, or surface phonons, is considered along a linear and periodic chain of cylindrical pillars sitting on a semi-infinite solid substrate. A variety of guided modes, some of them exhibiting a very low group velocity, are shown to exist at frequencies close to the resonance frequencies of the pillars. Although the pillar diameter is typically smaller than half the relevant wavelength, lateral radiation on the surface is found to be canceled. Surface guidance is explained by the hybridization of the resonating pillars with the continuum of elastic waves of the substrate.