全文获取类型
收费全文 | 36200篇 |
免费 | 399篇 |
国内免费 | 297篇 |
专业分类
安全科学 | 1053篇 |
废物处理 | 1389篇 |
环保管理 | 4896篇 |
综合类 | 5474篇 |
基础理论 | 10340篇 |
环境理论 | 22篇 |
污染及防治 | 9516篇 |
评价与监测 | 2228篇 |
社会与环境 | 1746篇 |
灾害及防治 | 232篇 |
出版年
2022年 | 259篇 |
2021年 | 235篇 |
2019年 | 262篇 |
2018年 | 503篇 |
2017年 | 476篇 |
2016年 | 715篇 |
2015年 | 592篇 |
2014年 | 835篇 |
2013年 | 2675篇 |
2012年 | 1056篇 |
2011年 | 1549篇 |
2010年 | 1286篇 |
2009年 | 1304篇 |
2008年 | 1557篇 |
2007年 | 1644篇 |
2006年 | 1460篇 |
2005年 | 1260篇 |
2004年 | 1207篇 |
2003年 | 1199篇 |
2002年 | 1151篇 |
2001年 | 1551篇 |
2000年 | 1085篇 |
1999年 | 666篇 |
1998年 | 521篇 |
1997年 | 524篇 |
1996年 | 536篇 |
1995年 | 589篇 |
1994年 | 526篇 |
1993年 | 463篇 |
1992年 | 495篇 |
1991年 | 453篇 |
1990年 | 473篇 |
1989年 | 497篇 |
1988年 | 415篇 |
1987年 | 351篇 |
1986年 | 316篇 |
1985年 | 364篇 |
1984年 | 346篇 |
1983年 | 391篇 |
1982年 | 380篇 |
1981年 | 320篇 |
1980年 | 287篇 |
1979年 | 321篇 |
1978年 | 259篇 |
1977年 | 230篇 |
1976年 | 235篇 |
1975年 | 228篇 |
1974年 | 212篇 |
1973年 | 212篇 |
1972年 | 226篇 |
排序方式: 共有10000条查询结果,搜索用时 703 毫秒
791.
Involuntary eye movements in salamanders 总被引:1,自引:0,他引:1
792.
Taylor AJ 《Disasters》1983,7(1):37-40
This paper defines the various levels within government, the voluntary agencies and the community which might benefit from training and makes suggestions as to where the emphasis should be placed. It points out that training programmes should be designed to meet the expressed needs of a particular group of trainees as well as be related to the current or potential disaster situation. 相似文献
793.
Hodler TW 《Disasters》1982,6(1):44-49
A survey was conducted of individuals residing directly in the path of the tornado that hit Kalamazoo, Michigan, on 13th May 1980. The residents' tornado preparedness and response were examined in an effort to evaluate the city's emergency warning system. The system was adequate for people on the east side of the city and lacking for west side residents. Other factors pertaining to the storm event and human response were also evaluated. 相似文献
794.
795.
796.
J A Heidman 《Journal - Water Pollution Control Federation》1975,47(6):1493-1498
797.
798.
799.
800.
Sadika M. Baladi Catherine M. Lewis Amitava Ganguly Alvin G. Morrow Lisel R. Shoffner Robert F. Blundy Patrick F. Nakagawa Sara T. Mundy Larry Anderson Karen Adams 《补救:环境净化治理成本、技术与工艺杂志》2003,14(1):5-20
Enhanced bioremediation is quickly developing into an economical and viable technology for the remediation of contaminated soils. Until recently, chlorinated organic compounds have proven difficult to bioremediate. Environmentally recalcitrant compounds, such as polychlorinated biphenyls (PCBs) and persistent organic pesticides (POPs) such as dichlorodiphenyl trichloroethane (DDT) have shown to be especially arduous to bioremediate. Recent advances in field‐scale bioremedial applications have indicated that biodegradation of these compounds may be possible. Engineers and scientists at the Savannah River Site (SRS), a major DOE installation near Aiken, South Carolina, are using enhanced bioremediation to remediate soils contaminated with pesticides (DDT and its metabolites, heptachlor epoxide, dieldrin, and endrin) and PCBs. This article reviews the ongoing remediation occurring at the Chemicals, Metals, and Pesticides (CMP) Pits using windrow turners to facilitate microbial degradation of certain pesticides and PCBs. © 2003 Wiley Periodicals, Inc. 相似文献