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排序方式: 共有85条查询结果,搜索用时 281 毫秒
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Anne Pinton Julia Boubnova François Becmeur Pierre Kuhn Marie-Victoire Senat Julien Stirnemann Marianne Capelle Jonathan Rosenblatt Jérôme Massardier Pascal Vaast Gwenaelle Le Bouar Amélie Desrumaux Laure Connant Laetitia Begue Benoit Parmentier Franck Perrotin Alain Diguet Guillaume Benoist Charles Muszynski Aurélien Scalabre Norbert Winer Jean-Luc Michel Florence Casagrandre-Magne Jean-Marie Jouannic Denis Gallot Perrine Coste Mazeau Emmanuel Sapin Alexis Maatouk Anne-Hélène Saliou Loïc Sentilhes Florence Biquard Nicolas Mottet Romain Favre Alexandra Benachi Nicolas Sananès 《黑龙江环境通报》2020,40(8):949-957
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Jennifer E. Price Carl E. Zipper Jess W. Jones Christopher T. Franck 《Journal of the American Water Resources Association》2014,50(4):837-858
The Clinch River, in eastern United States, supports a diverse freshwater fauna including endangered mussels. Although mussel populations are stable in the Clinch's northeastern Tennessee segment, long‐term declines have been documented upstream in Virginia. We analyzed water and sediment quality data collected by government agencies from the 1960s through 2013 in an effort to inform current management. The river was divided into sections considering data availability and major tributaries. We tested for spatial differences among river sections and for temporal trends, and compared measured values to potentially protective levels if available. Ammonia concentrations approaching and exceeding protective levels were recorded, most often during the 1970s and 1980s in upstream sections. Sediment metals occurred at levels potentially causing biological effects, mainly during the 1980s and 1990s. In the 2000s, water‐column metals have been well below protective levels for general aquatic life. Dissolved solids (DS) increased in most river sections over the study period but mussel‐specific protective levels are not known. Analysis of water pH, total N, and total P did not generate conservation concern. Enhanced monitoring for sediment metals, water‐column metals, and ionic composition of DS; closer alignment of agency water monitoring practices in the two states; and research to determine biological effects of DS at current and anticipated levels can aid future conservation management. 相似文献
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W. A. Bingel H. Weigmann H. G. Schlegel B. Franck R. Tschesche 《Die Naturwissenschaften》1964,51(24):647-648
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Franck L. B. Meijboom 《Journal of Agricultural and Environmental Ethics》2007,20(3):231-245
The food sector and health sector become more and more intertwined. This raises many possibilities, but also questions. One
of them is the question of what the implication is for public trust in food and health issues. In this article, I argue that
the products on the interface between food and health entails some serious questions of trust. Trust in food products and
medical products is often based upon a long history of rather clear patterns of mutual expectations, yet these expectations
are not similar in both sectors. As long as the food sector and health sector remain distinct, these differences will not
lead to problems of trust, yet when new products are introduced, like functional foods or personalized dietary advices, trust
can be threatened. To prevent this, we need clarity with regard to what we can expect of these new products and of whom to expect what in this situation. This requires not␣only adequate information on operating procedures, but also a profound
debate␣on responsibilities and the explication and interpretation of moral values and norms. 相似文献
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C. F. v. Weizsäcker R. Haag Burchard Franck Sperling K. Philipp 《Die Naturwissenschaften》1955,42(16):471-472
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