全文获取类型
收费全文 | 1790篇 |
免费 | 28篇 |
国内免费 | 12篇 |
专业分类
安全科学 | 35篇 |
废物处理 | 32篇 |
环保管理 | 292篇 |
综合类 | 400篇 |
基础理论 | 470篇 |
污染及防治 | 429篇 |
评价与监测 | 117篇 |
社会与环境 | 47篇 |
灾害及防治 | 8篇 |
出版年
2020年 | 13篇 |
2018年 | 25篇 |
2017年 | 27篇 |
2016年 | 26篇 |
2015年 | 30篇 |
2014年 | 47篇 |
2013年 | 306篇 |
2012年 | 34篇 |
2011年 | 47篇 |
2010年 | 48篇 |
2009年 | 41篇 |
2008年 | 48篇 |
2007年 | 49篇 |
2006年 | 36篇 |
2005年 | 31篇 |
2004年 | 45篇 |
2003年 | 25篇 |
2002年 | 35篇 |
2001年 | 23篇 |
2000年 | 34篇 |
1999年 | 33篇 |
1998年 | 24篇 |
1997年 | 18篇 |
1996年 | 34篇 |
1995年 | 36篇 |
1994年 | 48篇 |
1993年 | 33篇 |
1992年 | 20篇 |
1991年 | 19篇 |
1990年 | 26篇 |
1989年 | 20篇 |
1988年 | 30篇 |
1987年 | 19篇 |
1986年 | 18篇 |
1985年 | 16篇 |
1984年 | 31篇 |
1983年 | 23篇 |
1982年 | 19篇 |
1981年 | 25篇 |
1980年 | 19篇 |
1979年 | 23篇 |
1978年 | 25篇 |
1977年 | 19篇 |
1975年 | 10篇 |
1973年 | 10篇 |
1964年 | 10篇 |
1960年 | 9篇 |
1959年 | 12篇 |
1956年 | 11篇 |
1954年 | 9篇 |
排序方式: 共有1830条查询结果,搜索用时 46 毫秒
991.
992.
993.
994.
995.
996.
997.
998.
Smits JE Bortolotti GR Baos R Jovani R Tella JL Hoffmann WE 《Environmental pollution (Barking, Essex : 1987)》2007,145(2):538-544
In 1998, the Aznalcóllar mine tailings dyke in southwestern Spain broke, flooding the Agrio-Guadiamar river system with acid tailings up to the borders of one of the largest breeding colonies of white storks in the western Palearctic, Dehesa de Abajo. Over the following years, a high proportion of nestlings developed leg defects not seen before the spill, prompting this study. Nestlings with deformed legs had significantly lower plasma phosphorous (P) and higher Ca:P ratios than non-deformed cohorts in the first two years, but in the third year, when more, younger birds were studied, plasma P ranged from much higher to much lower in the affected colony compared with reference birds. Coefficients of variation for phosphorous were 19% and 60%, in reference and contaminated colonies, respectively. Storks from the contaminated colony were unable to control P levels and Ca:P ratios within the narrow limits necessary for normal bone development. 相似文献
999.
Stuart C. Carr Malcolm MacLachlan Walter Reichman Jane Klobas Mary O'Neill Berry Adrian Furnham 《组织行为杂志》2008,29(7):843-851
Developing a globally responsive Science‐Practitioner‐Humanist model (Lefkowitz, 2008 ) means articulating professional values (supply) and meeting global demand. The United Nations' Millennium Development Goals (MDGs) seek to halve human poverty by 2015 and how organizations respond to this constitutes a formidable demand on Organizational Psychology. A key process for delivering more effective aid is the Paris Declaration on Aid Effectiveness, which seeks collaborative contributions from a plethora of Organizations, including business organizations and professions like ours. We argue that a thoughtful articulation of what Organizational Psychology uniquely stands for, and can offer, is therefore needed. It is proposed that a key mechanism for addressing this challenge is a Task Force, whose functions will include the coordination of institutions within psychology, and linking them to those in development. We describe such a task force and outline its core mission (Reichman, Frese, Schein, Carr, MacLachlan, & Landy, 2008 ). Organizational Psychology's response to poverty reduction should meet Lefkowitz's criteria for developing a more humanist model of science and practice as the MDGs are inherently humanist and values‐based. Copyright © 2008 John Wiley & Sons, Ltd. 相似文献
1000.
Environmental Fluid Mechanics - Reed Canarygrass (RCG) is an aggressive invader in aquatic ecosystems that swiftly modifies the environment, resulting in biodiversity loss and reduced flood... 相似文献