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41.
Franois Laurent Wolfram Anker Didier Graillot 《Journal of the American Water Resources Association》1998,34(1):123-134
ABSTRACT: A method for water resources protection based on spatial variability of vulnerability is proposed. The vulnerability of a water resource is defined as the risk that the resource will become contaminated if a pollutant is placed on the surface at one point as compared to another. A spatial modelling method is defined in this paper to estimate a travel time between any point of a catchment and a resource (river or well). This method is based on spatial analysis tools integrated in Geographical Information Systems (GIS). The method is illustrated by an application to an area of Massif Central (France) where three different types of flow appear: surface flow, shallow subsurface flow, and permanent ground water flow (baseflow). The proposed method gives results similar to classical methods of estimation of travel time. The contribution of GIS is to improve the mapping of vulnerability by taking the spatial variability of physical phenomena into account. 相似文献
42.
Sylvie Tambutté Eric Tambutté Didier Zoccola Natacha Caminiti Severine Lotto Aurélie Moya Denis Allemand Jess Adkins 《Marine Biology》2007,151(1):71-83
In zooxanthellate corals, the photosynthetic fixation of carbon dioxide and the precipitation of CaCO3 are intimately linked both spatially and temporally making it difficult to study carbon transport mechanisms involved in each
pathway. When studying Tubastrea aurea, a coral devoid of zooxanthellae, we can focus on carbon transport mechanisms involved only in the calcification process.
We performed this study to characterize T. aurea carbonic anhydrase and to determine its role in the calcification process. We have shown that inhibition of tissular carbonic
anhydrase activity affects the calcification rate. We have measured the activity of this enzyme both in the tissues and in
the organix matrix extracted from the skeleton. Our results indicate that organic matrix proteins, which are synthesized by
the calcifying tissues, are not only structural proteins, but they also play a crucial catalytic role by eliminating the kinetic
barrier to interconversion of inorganic carbon at the calcification site. By immunochemistry we have demonstrated the presence
of a protein both in the tissues and in the organic matrix, which shares common features with prokaryotic carbonic anhydrases. 相似文献
43.
Christian Dagenais Laurence Plouffe Charles Gagné Georges Toulouse Andrée-Anne Breault Didier Dupont 《International journal of occupational safety and ergonomics》2013,19(1):50-59
A knowledge transfer (KT) strategy was implemented by the IRSST, an occupational health and safety research institute established in Québec (Canada), to improve the prevention of psychological and musculoskeletal problems among 911 emergency call centre agents. An evaluability assessment was conducted in which each aspect of the KT approach was documented systematically to determine whether the strategy had the potential to be evaluated in terms of its impact on the targeted population. A review of the literature on KT in occupational health and safety and on the evaluation of such KT programmes, along with the development of a logic model based on documentary analysis and semi-structured interviews with key stakeholders, indicated that the KT strategy was likely to have had a positive impact in the 911 emergency call centre sector. Implications for future research are discussed. 相似文献
44.
Bouyahya Asmaa Sembo-Backonly Berthe-Sandra Favrelle-Huret Audrey Balieu Sébastien Guillen Frédéric Mesnage Valérie Karakasyan-Dia Carole Lahcini Mohammed Le Cerf Didier Gouhier Géraldine 《Environmental science and pollution research international》2022,29(1):271-283
Environmental Science and Pollution Research - We developed a new hybrid material resulting from an innovative supramolecular tripartite association between an ionic liquid covalently immobilized... 相似文献
45.
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47.
Yves-Marie Bozec Michel Kulbicki Francis Laloë Gérard Mou-Tham Didier Gascuel 《Marine Biology》2011,158(5):969-981
Detection patterns of coral reef fish were assessed from the meta-analysis of distance sampling surveys performed by visual
census in New Caledonia and French Polynesia, from 1986 to 1999. From approximately 100,000 observations relating to 593 species,
the frequency distributions of fish detection distances perpendicular to the transect line were compared according to species
characteristics and sampling conditions. The shape and extension of these detection profiles varied markedly with fish size,
shyness, and crypticity, indicating strong differences of detectability across species. Detection of very small and cryptic
fish decreased strongly 1 m away from the line. Conversely, sightings of shy and large species were excessively low in the
first meters due to diver avoidance prior to detection. The larger the fish, the greater the fleeing distance. Distance data
underscore how inconsistent detectability biases across species and sites can affect the accuracy of visual censuses when
assessing coral reef fish populations. 相似文献
48.
49.
Técher Didier Berthier Emmanuel 《Environmental science and pollution research international》2023,30(8):19705-19724
Environmental Science and Pollution Research - Stormwater mitigation efficiency of bioretention systems relies for a large part on their capacity to infiltrate rapidly received runoff. Within this... 相似文献
50.
Paul M. Bradley Celeste A. Journey Julie D. Kirshtein Mary A. Voytek Pierre J. Lacombe Thomas E. Imbrigiotta Francis H. Chapelle Claire J. Tiedeman Daniel J. Goode 《补救:环境净化治理成本、技术与工艺杂志》2012,22(2):21-32
Significant microbial reductive dechlorination of [1,2 14C] cis‐dichloroethene (DCE) was observed in anoxic microcosms prepared with unamended, fractured rock aquifer materials, which were colonized in situ at multiple depths in two boreholes at the Naval Air Warfare Center (NAWC) in West Trenton, New Jersey. The lack of significant reductive dechlorination in corresponding water‐only treatments indicated that chlororespiration activity in unamended, fractured rock treatments was primarily associated with colonized core material. In these unamended fractured rock microcosms, activity was highest in the shallow zones and generally decreased with increasing depth. Electron‐donor amendment (biostimulation) enhanced chlororespiration in some but not all treatments. In contrast, combining electron‐donor amendment with KB1 amendment (bioaugmentation) enhanced chlororespiration in all treatments and substantially reduced the variability in chlororespiration activity both within and between treatments. These results indicate (1) that a potential for chlororespiration‐based bioremediation exists at NAWC Trenton but is limited under nonengineered conditions, (2) that the limitation on chlororespiration activity is not entirely due to electron‐donor availability, and (3) that a bioaugmentation approach can substantially enhance in situ bioremediation if the requisite amendments can be adequately distributed throughout the fractured rock matrix. © 2012 Wiley Periodicals, Inc.* 相似文献