全文获取类型
收费全文 | 570篇 |
免费 | 3篇 |
国内免费 | 5篇 |
专业分类
安全科学 | 3篇 |
废物处理 | 9篇 |
环保管理 | 27篇 |
综合类 | 315篇 |
基础理论 | 90篇 |
污染及防治 | 98篇 |
评价与监测 | 23篇 |
社会与环境 | 12篇 |
灾害及防治 | 1篇 |
出版年
2018年 | 7篇 |
2017年 | 9篇 |
2016年 | 13篇 |
2015年 | 8篇 |
2013年 | 18篇 |
2012年 | 8篇 |
2011年 | 22篇 |
2010年 | 13篇 |
2009年 | 16篇 |
2008年 | 20篇 |
2007年 | 21篇 |
2006年 | 7篇 |
2005年 | 14篇 |
2004年 | 14篇 |
2003年 | 15篇 |
2002年 | 12篇 |
2001年 | 7篇 |
1999年 | 12篇 |
1998年 | 15篇 |
1997年 | 7篇 |
1996年 | 6篇 |
1995年 | 7篇 |
1994年 | 7篇 |
1993年 | 5篇 |
1990年 | 5篇 |
1975年 | 5篇 |
1973年 | 6篇 |
1972年 | 5篇 |
1970年 | 8篇 |
1969年 | 5篇 |
1967年 | 8篇 |
1965年 | 11篇 |
1963年 | 13篇 |
1962年 | 10篇 |
1961年 | 10篇 |
1960年 | 10篇 |
1959年 | 13篇 |
1958年 | 9篇 |
1957年 | 7篇 |
1956年 | 9篇 |
1955年 | 7篇 |
1954年 | 5篇 |
1953年 | 6篇 |
1952年 | 5篇 |
1951年 | 4篇 |
1938年 | 4篇 |
1930年 | 4篇 |
1926年 | 7篇 |
1914年 | 6篇 |
1913年 | 11篇 |
排序方式: 共有578条查询结果,搜索用时 765 毫秒
371.
Barbara Skorupinski Heike Baranzke Hans Werner Ingensiep Marc Meinhardt 《Journal of Agricultural and Environmental Ethics》2007,20(1):37-52
This paper focuses on experiences from a case study dealing with the Swiss type of a consensus conference called “PubliForum”
concerning “Genetic Technology and Nutrition” (1999). Societal and ethical aspects of genetically modified food meanwhile
can be seen as prototypes of topics depending on the involvement of the public through a participatory process. The important
role of the lay perspective in this field seems to be accepted in practice. Nevertheless, there is still some theoretical
controversy about the necessity and democratic legitimacy of participatory processes in general, and especially about those
dealing with technological or environmental problems (sustainable development) concerning society. From an ethical point of
view, a lot of heterogeneous problems concerning contents and procedures of public participation can be pointed out, not only
on the theoretical level but also in practice, e.g., concerning the communication process between laypersons and experts.
The intention of our paper is to give hints and to clarify criteria that support the communication process leading to a dialog
of autonomous citizens and which especially consider ethical aspects in the field. One important result is that there must
be an orientation for all members of a consensus conference having clear rules and knowing their different roles that support
transparency, credibility, and fairness of the whole procedure and a “good product”: a substantial final document or citizens’
report.
This paper presents results of the project Ethical Bio-TA Tools as funded by the European Commission, DG Research, under FP5,
Quality of Life Programme. 相似文献
372.
Werner Baur 《Die Naturwissenschaften》1955,42(10):295-296
373.
Brian A. Joyce Wesley W. Wallender Till Angermann Barry W. Wilson Ingeborg Werner Michael N. Oliver Frank G. Zalom John D. Henderson 《Journal of the American Water Resources Association》2004,40(4):1063-1070
ABSTRACT: Pesticide runoff from dormant sprayed orchards is a major water quality problem in California's Central Valley. During the past several years, diazinon levels in the Sacramento and San Joaquin Rivers have exceeded water quality criteria for aquatic organisms. Orchard water management, via post‐application irrigation, and infiltration enhancement, through the use of a vegetative ground cover, are management practices that are believed to reduce pesticide loading to surface waters. Field experiments were conducted in Davis, California, to measure the effectiveness of these management practices in reducing the toxicity of storm water runoff. Treatments using a vegetative ground cover significantly reduced peak concentrations and cumulative pesticide mass in runoff for first flush experiments compared with bare soil treatments. Post‐application irrigation was found to be an effective means of reducing peak concentrations and cumulative mass in runoff from bare soil treatments, but showed no significant effect on vegetated treatments. 相似文献
374.
Reinhold Wurster Werner Zittel 《Mitigation and Adaptation Strategies for Global Change》2007,12(3):367-386
Some lessons for the introduction of hydrogen fueled vehicles can be learned from experience gained by the introduction of
natural gas fueled vehicles, either in Europe or in Argentina. While the European efforts have failed, at least until today,
Argentina has achieved a remarkable market share of about 20% natural gas vehicles since the early 80ies. Beyond a short review
on the constituents of a hydrogen refueling infrastructure, the Compressed Natural Gas (CNG)-example is analyzed to formulate
some ‘must be’s’ for the successful introduction of hydrogen refueling infrastructure: Clear concerted signals have to be
sent by all important players, the politicians as well as the involved industry from car producers to fuel suppliers. Bi-fueled
hybrid vehicles are not seen as a proper tool, as they are forcing neither the user to look for hydrogen nor the supplier
to provide hydrogen. After general considerations, various strategies and policies of different countries and manufacturers
are reviewed. For instance, the electric hybrid cars as already today introduced by some Japanese manufacturers offer the
chance of settling a maintenance infrastructure for electric drive systems already today which can be easily extended to cover
full fuel cell drive systems, once they are available. 相似文献
375.
376.
377.
378.
379.
380.