全文获取类型
收费全文 | 80篇 |
免费 | 0篇 |
专业分类
安全科学 | 4篇 |
废物处理 | 2篇 |
环保管理 | 13篇 |
综合类 | 21篇 |
基础理论 | 13篇 |
污染及防治 | 18篇 |
评价与监测 | 4篇 |
社会与环境 | 4篇 |
灾害及防治 | 1篇 |
出版年
2019年 | 2篇 |
2018年 | 3篇 |
2017年 | 4篇 |
2016年 | 3篇 |
2015年 | 1篇 |
2013年 | 5篇 |
2012年 | 5篇 |
2011年 | 3篇 |
2010年 | 3篇 |
2009年 | 5篇 |
2008年 | 6篇 |
2007年 | 4篇 |
2006年 | 2篇 |
2005年 | 3篇 |
2004年 | 1篇 |
2003年 | 3篇 |
2002年 | 1篇 |
2001年 | 1篇 |
2000年 | 3篇 |
1999年 | 3篇 |
1998年 | 2篇 |
1997年 | 2篇 |
1995年 | 3篇 |
1993年 | 1篇 |
1992年 | 1篇 |
1990年 | 2篇 |
1989年 | 2篇 |
1988年 | 2篇 |
1985年 | 1篇 |
1983年 | 1篇 |
1982年 | 1篇 |
1957年 | 1篇 |
排序方式: 共有80条查询结果,搜索用时 531 毫秒
51.
D. Baron 《Die Naturwissenschaften》1997,84(5):189-198
52.
53.
Peggy Drouillet-Pinard Michel Boisset Alain Périquet Jean-Michel Lecerf Francine Casse Michel Catteau 《Journal of environmental science and health. Part. B》2013,48(1):84-91
The increase of fruit and vegetable (F&V) intake contributes to the prevention of chronic diseases, but could also significantly increase pesticide exposure and may thus be of health concern. Following a previous pesticide exposure assessment study, the present study was carried out to determine actual levels of pesticides within 400 g of F&V intake and to evaluate consumer risk. Forty-three Active Substances (AS) exceeding 10 % of the Acceptable Daily Intake (ADI) in balanced menus established for our previous theoretical study were considered. Fifty-six pooled food samples were analyzed: 28 fruit samples and 28 vegetable samples. Pesticide values were compared to Maximum Residue Levels (MRL) and to the “toxicological credit” derived from ADI. It was observed that 23 out of the 43 retained AS were never detected, 5 were detected both in F&V samples, 12 only in fruits and 3 only in vegetables. The most frequently detected AS were carbendazim, iprodione and dithiocarbamates. When detected, AS were more frequently found in fruit samples (74 %) than in vegetable samples (26 %). A maximum of 3 AS were detected at once in a given sample. Overall, we observed 8 and 14 overruns of the MRL in 1204 measures in pooled vegetable and fruit samples, respectively (0.7 % and 1.2 % of cases, respectively). Chronic exposure for adults was the highest for dithiocarbamates but did not exceed 23.7 % of the ADI in F&V. It was concluded that raising both F&V consumption up to 400 g/day (~5 F&V/day) according to recommendations of the national health and nutrition plan, does not induce pesticide overexposure and should not represent a risk for the consumer. 相似文献
54.
55.
56.
Jill S Baron 《Ecological applications》2006,16(2):433-439
Using an estimated background nitrogen (N) deposition value of 0.5 kg N x ha(-1) x yr(-1) in 1900, and a 19-year record of measured values from Loch Vale (Colorado, USA; NADP site CO98), I reconstructed an N-deposition history using exponential equations that correlated well with EPA-reported NO(x) emissions from Colorado and from the sum of emissions of 11 western states. The mean wet N-deposition values for the period 1950-1964 was approximately 1.5 kg N x ha(-1) x yr(-1), corresponding to the reported time of alteration of diatom assemblages attributed to N deposition in alpine lakes in Rocky Mountain National Park (USA). This value becomes the critical load defining the threshold for ecological change from eutrophication. Thus if an N-deposition threshold for ecological change can be identified, and the date at which that threshold was crossed is known, hindcasting can derive the amount of atmospheric deposition at the time of change, at least for alpine lakes. Independent support for the technique and the deposition amount comes from experimental studies, ecosystem modeling, and paleolimnological records from northern Wyoming (USA). 相似文献
57.
Jill Baron A. Scott Denning Keith Schoepflin 《Environmental monitoring and assessment》1989,12(3):293-293
Contribution from Fourth World Wilderness Congress-Acid Rain Symposium, Denver (Estes Park), Colorado, September 11–18, 1987. 相似文献
58.
Jill S. Baron Lance Gunderson Craig D. Allen Erica Fleishman Donald McKenzie Laura A. Meyerson Jill Oropeza Nate Stephenson 《Environmental management》2009,44(6):1033-1042
Past and present climate has shaped the valued ecosystems currently protected in parks and reserves, but future climate change
will redefine these conditions. Continued conservation as climate changes will require thinking differently about resource
management than we have in the past; we present some logical steps and tools for doing so. Three critical tenets underpin
future management plans and activities: (1) climate patterns of the past will not be the climate patterns of the future; (2)
climate defines the environment and influences future trajectories of the distributions of species and their habitats; (3)
specific management actions may help increase the resilience of some natural resources, but fundamental changes in species
and their environment may be inevitable. Science-based management will be necessary because past experience may not serve
as a guide for novel future conditions. Identifying resources and processes at risk, defining thresholds and reference conditions,
and establishing monitoring and assessment programs are among the types of scientific practices needed to support a broadened
portfolio of management activities. In addition to the control and hedging management strategies commonly in use today, we
recommend adaptive management wherever possible. Adaptive management increases our ability to address the multiple scales
at which species and processes function, and increases the speed of knowledge transfer among scientists and managers. Scenario
planning provides a broad forward-thinking framework from which the most appropriate management tools can be chosen. The scope
of climate change effects will require a shared vision among regional partners. Preparing for and adapting to climate change
is as much a cultural and intellectual challenge as an ecological challenge. 相似文献
59.
Salles Jean-Michel Teillard Félix Tichit Muriel Zanella Maiko 《Regional Environmental Change》2017,17(5):1455-1465
Regional Environmental Change - The land sparing versus land sharing debate has already had a significant history and was particularly active during the last decade. Studies carried out mostly by... 相似文献
60.
The following article describes both theoretical basis and detailed method for producing monoclonal antibodies in the systems of mouse and man. It further outlines methods to characterize monoclonal antibodies and produce them on a larger scale. Finally, reference is made to their application in research and medicine, and further developments are indicated. 相似文献