全文获取类型
收费全文 | 47895篇 |
免费 | 478篇 |
国内免费 | 404篇 |
专业分类
安全科学 | 1273篇 |
废物处理 | 2063篇 |
环保管理 | 6045篇 |
综合类 | 7173篇 |
基础理论 | 13001篇 |
环境理论 | 31篇 |
污染及防治 | 12902篇 |
评价与监测 | 3340篇 |
社会与环境 | 2635篇 |
灾害及防治 | 314篇 |
出版年
2022年 | 437篇 |
2021年 | 519篇 |
2020年 | 321篇 |
2019年 | 406篇 |
2018年 | 797篇 |
2017年 | 799篇 |
2016年 | 1182篇 |
2015年 | 868篇 |
2014年 | 1327篇 |
2013年 | 3864篇 |
2012年 | 1585篇 |
2011年 | 2187篇 |
2010年 | 1792篇 |
2009年 | 1741篇 |
2008年 | 2122篇 |
2007年 | 2232篇 |
2006年 | 1983篇 |
2005年 | 1650篇 |
2004年 | 1604篇 |
2003年 | 1505篇 |
2002年 | 1456篇 |
2001年 | 1867篇 |
2000年 | 1282篇 |
1999年 | 817篇 |
1998年 | 620篇 |
1997年 | 606篇 |
1996年 | 652篇 |
1995年 | 672篇 |
1994年 | 618篇 |
1993年 | 569篇 |
1992年 | 568篇 |
1991年 | 521篇 |
1990年 | 528篇 |
1989年 | 553篇 |
1988年 | 486篇 |
1987年 | 404篇 |
1986年 | 365篇 |
1985年 | 405篇 |
1984年 | 413篇 |
1983年 | 434篇 |
1982年 | 452篇 |
1981年 | 369篇 |
1980年 | 330篇 |
1979年 | 386篇 |
1978年 | 311篇 |
1977年 | 272篇 |
1976年 | 274篇 |
1975年 | 254篇 |
1974年 | 238篇 |
1972年 | 248篇 |
排序方式: 共有10000条查询结果,搜索用时 15 毫秒
101.
Benito-Garzón Marta Fady Bruno Davi Hendrik Vizcaíno-Palomar Natalia Fernández-Manjarrés Juan 《Regional Environmental Change》2018,18(5):1427-1437
Regional Environmental Change - The adaptation of social-ecological systems such as managed forests depends largely on decisions taken by forest managers who must choose among a wide range of... 相似文献
102.
Mingming Deng Alan H. S. Chan Feng Wu Linyan Sun 《International journal of occupational safety and ergonomics》2018,24(3):450-456
To explore the relationships between human factors and accident proneness of coal mine workers, the depth perception, dark adaptation and vigilance abilities of 239 Chinese coal mine workers were tested and their accident proneness was surveyed with an accident proneness questionnaire. The results indicated that dark adaptation and vigilance abilities of the mine workers declined with increasing age. Vigilance had a significant negative relationship with accident proneness. There were significant differences in vigilance between coal mine workers doing different types of work. Individual difference in vigilance was relevant to the type of work that an individual did in a coal mine. The dark adaptation index had a significant positive relationship with accident proneness. Coal mine workers with weaker dark adaptation ability were also more accident prone. Some ergonomics recommendations concerning coal mine safety management in China are proposed. 相似文献
103.
104.
105.
106.
107.
108.
Cost‐Effective Rapid and Long‐Term Screening of Chemical Vapor Intrusion (CVI) Potential: Across Both Space and Time 下载免费PDF全文
Reviews including the latest “data‐rich” chemical vapor intrusion‐radon (CVI‐Rn) studies indicate buildings/times can be “screened‐in” as having Rn‐evident‐susceptibility/priority for soil gas intrusion, and elevated‐potential for CVI concerns, or not. These screening methods can supplement conventional indoor‐air chemical sampling, under naturally varying conditions, by prioritizing buildings and times based on indoor Rn levels. Rn is a widespread, naturally occurring component of soil gas and a tracer of soil gas intrusion into the indoor air of overlying buildings. Rn is also an indicator for generally similar behavior of other components of near‐building soil gas, possibly including chemical contaminant vapors. Indoor Rn is easily measured at a low cost, allowing continuous observations from essentially all buildings with the potential for CVI across time. This presents cost savings and other benefits for all CVI stakeholders. 相似文献
109.
110.