全文获取类型
收费全文 | 368篇 |
免费 | 65篇 |
国内免费 | 20篇 |
专业分类
安全科学 | 120篇 |
废物处理 | 8篇 |
环保管理 | 77篇 |
综合类 | 169篇 |
基础理论 | 21篇 |
污染及防治 | 16篇 |
评价与监测 | 14篇 |
社会与环境 | 9篇 |
灾害及防治 | 19篇 |
出版年
2023年 | 3篇 |
2022年 | 7篇 |
2021年 | 15篇 |
2020年 | 10篇 |
2019年 | 17篇 |
2018年 | 12篇 |
2017年 | 25篇 |
2016年 | 26篇 |
2015年 | 12篇 |
2014年 | 24篇 |
2013年 | 19篇 |
2012年 | 33篇 |
2011年 | 32篇 |
2010年 | 20篇 |
2009年 | 19篇 |
2008年 | 11篇 |
2007年 | 17篇 |
2006年 | 15篇 |
2005年 | 19篇 |
2004年 | 12篇 |
2003年 | 15篇 |
2002年 | 15篇 |
2001年 | 9篇 |
2000年 | 9篇 |
1999年 | 9篇 |
1998年 | 8篇 |
1997年 | 7篇 |
1996年 | 5篇 |
1995年 | 3篇 |
1994年 | 6篇 |
1993年 | 2篇 |
1992年 | 3篇 |
1988年 | 2篇 |
1987年 | 1篇 |
1983年 | 1篇 |
1981年 | 1篇 |
1980年 | 2篇 |
1979年 | 2篇 |
1978年 | 1篇 |
1973年 | 1篇 |
1972年 | 2篇 |
1971年 | 1篇 |
排序方式: 共有453条查询结果,搜索用时 546 毫秒
441.
It is also in our nature: Genetic influences on work characteristics and in explaining their relationships with well‐being
下载免费PDF全文
![点击此处可从《组织行为杂志》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Work design research typically views employee work characteristics as being primarily determined by the work environment and has thus paid less attention to the possibility that the person may also influence employee work characteristics and in turn accounts for the work characteristics–well‐being relationships through selection. Challenging this conventional view, we investigated the role of a fundamental individual difference variable—people's genetic makeup—in affecting work characteristics (i.e., job demands, job control, social support at work, and job complexity) and in explaining why work characteristics relate to subjective and physical well‐being. Our findings based on a national US twin sample show sizable genetic influences on job demands, job control, and job complexity, but not on social support at work. Such genetic influences were partly attributed to genetic factors associated with core self‐evaluations. Both genetic and environmental influences accounted for the relationships between work characteristics and well‐being, but to varying degrees. The results underscore the importance of the person, in addition to the work environment, in influencing employee work characteristics and explaining the underlying nature of the relationships between employee work characteristics and their well‐being. Copyright © 2016 John Wiley & Sons, Ltd. 相似文献
442.
100 years running: The need to understand why employee physical activity benefits organizations
下载免费PDF全文
![点击此处可从《组织行为杂志》网站下载免费的PDF全文](/ch/ext_images/free.gif)
Charles Calderwood Allison S. Gabriel Christopher C. Rosen Lauren S. Simon Joel Koopman 《组织行为杂志》2016,37(7):1104-1109
Employee physical activity initiatives are commonplace, but management scholarship has not kept pace with theoretical and empirical work to validate such initiatives. In this Incubator, we clarify the employee physical activity construct, present mechanisms linking physical activity to organizationally valued outcomes, and consider the dark side of employee physical activity initiatives. Copyright © 2015 John Wiley & Sons, Ltd. 相似文献
443.
Biogeochemical cyclic activity of the ars (arsenic resistance system) operon is arsB influx/effux encoded by the ecological of Pseudomonas putida.This suggests that studying arsenite-oxidizing bacteria may lead to a better understanding of molecular geomicrobiology,which can be applied to the bioremediation of arsenic-contaminated mines.This is the first report in which multiple arsB-binding mechanisms have been used on indigenous bacteria.In ArsB (strains OS-5; ABB83931; OS-19; ABB04282 and RW-28; ABB88574... 相似文献
444.
Relationships between psychological contract breach and employee well‐being and career‐related behavior cannot sufficiently be explained by social exchange and reciprocity theories, yet the alternative mechanisms underlying these associations are currently not well understood. Based on the psychological contract perspective on careers, the goal of this study was to examine indirect effects of psychological contract breach on emotional engagement, emotional exhaustion, and career‐related behavior through two dimensions of occupational future time perspective (i.e., focus on opportunities and focus on limitations). Data came from 405 employees in Australia, who responded to three surveys across 12 months. Results showed that psychological contract breach had indirect effects on emotional engagement and exhaustion through focus on opportunities and focus on limitations, respectively, and on career‐related behavior through focus on opportunities. Another mechanism, psychological contract violation, was only related to employees' organizational deviance. These findings highlight the important role of occupational future time perspective dimensions as employees' evaluations of future career‐related opportunities and limitations. These evaluations may change in response to psychological contract breach and, in turn, might impact on employee well‐being and career‐related behavior. 相似文献
445.
针对建筑中地源热泵系统实际地下换热过程复杂、设计困难等问题,以苏州地区某浅埋式地源热泵系统为研究对象,运用TRNSYS软件搭建地源热泵仿真模型,对一定条件下埋管内冷却水流速与地源热泵系统性能的耦合关系进行了模拟分析。仿真结果表明相同蓄热体积下埋管深度对系统性能影响较小。增大冷却水流速有利于土壤温度恢复,但系统耗电量增加。该浅埋式地源热泵系统冷却水流速1~2 m/s均在合理范围内,且埋管深度越大,最佳设计流速越小。 相似文献
446.
447.
W型真空泵爆鸣现象安全技术措施研讨 总被引:1,自引:0,他引:1
马晔 《安全.健康和环境》2003,3(11):24-25
着重论述了在制药企业中真空泵运转过程中排气管发生爆鸣现象的安全技术控制措施。提出采用过滤、冷却、缓冲、冷凝等安全技术措施消除作业过程中的危险。 相似文献
448.
地下水在线监测技术可以实现地下水水质的高频监测,是未来发展的重要趋势。梳理国内外地下水在线监测技术研究进展,以上海市典型水文地质特征与环境质量状况为例,探讨地下水在线监测点位布设、指标筛选、监测方式及监测井设计等技术要点。首先,优化监测点位布设,对需要开展高频监测的区域或重点风险源开展在线监测,以代表性点位反映总体地下水环境质量状况。其次,综合筛选监测指标,除常规参数外,优先选取水体中的氨氮、高锰酸盐指数等作为在线监测指标,在具有潜在有机污染的区域,选取水中有机物、水中油等作为有机污染指示性指标。应进一步加强指标之间的相关性分析,为指示性指标的确立提供依据。再次,合理确定监测方式,根据取样方式以及污染源风险等级,设置相应的微型站和小型站。最后,优化监测井设计技术方案,进一步研究不同井管材质对地下水中无机或有机污染物的长期吸附(解吸)作用。 相似文献
449.
450.
以蛭石为催化剂,通过激光粒度仪和电子扫描电镜对研磨蛭石进行粒径和形貌分析,研究蛭石类Fenton催化剂降解造纸废水中木质素模拟物紫丁香醇的特性,调查了催化剂研磨制备条件和相关反应条件,如蛭石投加量、初始p H值、H2O2用量、紫丁香醇溶液初始浓度等对紫丁香醇去除率的影响,同时还讨论了紫丁香醇降解过程中的动力学,结果表明:紫丁香醇降解效果随研磨时间的增加而增加,20 min后,蛭石平均粒径<6.9μm,基本效果不变;蛭石投加量为1.6 g/L,p H=3,双氧水为1.0 Q_(th)(Q_(th)为理论为量),紫丁香醇的浓度为50 mg/L的条件下,反应60 min后,紫丁香醇去除率基本可达100%,TOC去除率也可达到83.3%;蛭石类芬顿催化氧化降解紫丁香醇过程符合准一级动力学模型。 相似文献