全文获取类型
收费全文 | 252篇 |
免费 | 1篇 |
国内免费 | 3篇 |
专业分类
安全科学 | 5篇 |
废物处理 | 12篇 |
环保管理 | 31篇 |
综合类 | 91篇 |
基础理论 | 27篇 |
环境理论 | 1篇 |
污染及防治 | 65篇 |
评价与监测 | 10篇 |
社会与环境 | 8篇 |
灾害及防治 | 6篇 |
出版年
2022年 | 4篇 |
2021年 | 2篇 |
2019年 | 3篇 |
2018年 | 4篇 |
2017年 | 2篇 |
2016年 | 5篇 |
2015年 | 6篇 |
2014年 | 6篇 |
2013年 | 14篇 |
2012年 | 9篇 |
2011年 | 13篇 |
2010年 | 6篇 |
2009年 | 7篇 |
2008年 | 12篇 |
2007年 | 12篇 |
2006年 | 6篇 |
2005年 | 10篇 |
2004年 | 6篇 |
2003年 | 5篇 |
2002年 | 6篇 |
2001年 | 11篇 |
2000年 | 4篇 |
1999年 | 3篇 |
1998年 | 7篇 |
1997年 | 4篇 |
1996年 | 2篇 |
1994年 | 3篇 |
1993年 | 4篇 |
1983年 | 2篇 |
1967年 | 3篇 |
1964年 | 4篇 |
1963年 | 3篇 |
1962年 | 3篇 |
1959年 | 3篇 |
1958年 | 3篇 |
1956年 | 3篇 |
1954年 | 2篇 |
1946年 | 2篇 |
1937年 | 6篇 |
1936年 | 6篇 |
1935年 | 5篇 |
1934年 | 4篇 |
1931年 | 3篇 |
1930年 | 2篇 |
1929年 | 2篇 |
1926年 | 2篇 |
1924年 | 1篇 |
1921年 | 1篇 |
1916年 | 3篇 |
1915年 | 1篇 |
排序方式: 共有256条查询结果,搜索用时 0 毫秒
41.
I. Koppel F. Mayer R. Weil A. Wunschik R. Glocker K. Spiro O. Kuttner 《Die Naturwissenschaften》1926,14(28):667-672
42.
43.
44.
45.
46.
47.
48.
49.
Aneil?F.?AgrawalEmail author Jeremy?M.?Brown Edmund?D.?BrodieIII 《Behavioral ecology and sociobiology》2004,57(2):139-148
Maternal-offspring interactions are important in a variety of animals. Understanding the evolution of these interactions requires that we also study the broader social context in which they occur. To date, behavioral studies on burrower bugs, Sehirus cinctus, have focused exclusively on interactions between mothers and offspring. Here we ask whether these interactions occur in a social context that extends beyond the family unit of a mother and her own genetic offspring. Such social structure can arise from behaviors that occur before eggs are laid, or from actions of individuals that occur post-hatching. We present field data showing that lay sites of mothers are spatially aggregated on a scale that would lead to behavioral interactions among families. Microsatellite markers suggest neighboring mothers are unrelated. Laboratory experiments do not support the hypothesis that spatial aggregation results from a direct attraction of females to one another. Other laboratory studies reported here indicate that, after hatching, unrelated clutches sometimes join together to form multifamily groups. Experiments reveal that mothers are not necessary for these joining events to occur. In sum, these data suggest that both mothers and offspring play active, but different, roles in generating the social environment in which offspring rearing occurs.Communicated by N. Wedell 相似文献
50.
Michael Greenberg Joanna Burger Michael Gochfeld David Kosson Karen Lowrie Henry Mayer Charles W. Powers Conrad D. Volz Vikram Vyas 《补救:环境净化治理成本、技术与工艺杂志》2005,16(1):91-105
This article discusses creating a sustainably protective engineered and human management system in perpetuity for sites with long‐lived radiological and chemical hazards. This is essential at this time because the federal government is evaluating its property as assets and attempting to reduce its holdings, while seeking to assure that health and ecosystems are not put at risk. To assist those who have a stake in the remediation, management, and stewardship of these and analogous privately owned sites, this article discusses current end‐state planning by reviewing the federal government's accelerated efforts to reduce its footprint and how those efforts relate to sustainability. The article also provides a list of questions organized around six elements of risk management and primary, secondary, and tertiary disease and injury prevention. Throughout the article, the U.S. Department of Energy (DOE) is used as an example of an organization that seeks to reduce its footprint, manage its budget, and be a steward of the sites that it is responsible for. However, the approach and questions are appropriate for land controlled by the Department of Defense (DOD), the General Services Administration (GSA), and other public and private owners of sites with residual contamination. © 2005 Wiley Periodicals, Inc. 相似文献