首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   6027篇
  免费   46篇
  国内免费   45篇
安全科学   133篇
废物处理   363篇
环保管理   502篇
综合类   826篇
基础理论   1228篇
环境理论   8篇
污染及防治   2075篇
评价与监测   557篇
社会与环境   394篇
灾害及防治   32篇
  2023年   65篇
  2022年   172篇
  2021年   234篇
  2020年   98篇
  2019年   97篇
  2018年   211篇
  2017年   217篇
  2016年   306篇
  2015年   168篇
  2014年   305篇
  2013年   481篇
  2012年   366篇
  2011年   412篇
  2010年   299篇
  2009年   223篇
  2008年   310篇
  2007年   337篇
  2006年   240篇
  2005年   247篇
  2004年   256篇
  2003年   232篇
  2002年   171篇
  2001年   118篇
  2000年   71篇
  1999年   54篇
  1998年   27篇
  1997年   35篇
  1996年   25篇
  1995年   37篇
  1994年   26篇
  1993年   12篇
  1992年   16篇
  1991年   20篇
  1990年   15篇
  1989年   12篇
  1988年   7篇
  1987年   11篇
  1986年   9篇
  1985年   12篇
  1984年   10篇
  1983年   11篇
  1982年   6篇
  1981年   8篇
  1979年   8篇
  1970年   5篇
  1967年   6篇
  1966年   7篇
  1964年   9篇
  1958年   17篇
  1957年   7篇
排序方式: 共有6118条查询结果,搜索用时 15 毫秒
731.
Each day thousands of workers suffer occupational accidents of varying degrees of severity. Accidents at work render workers incapable of carrying out their day to day activities, either temporarily or permanently, and they also have detrimental effects on family life, the company, and the general public. In order to reduce the occupational accident rate, it is necessary to determine the causes of those accidents. Although there are many different types of accidents, they generally stem from poor working conditions. The purpose of this study was to analyze the influence of working conditions on occupational accidents from data gathered in the VI National Survey of Working Conditions (VI NSWCs) in 2007. This survey utilized a random sample of the active population of Spain. The sample comprised 11,054 people (5917 males and 5137 females). In order to carry out the study, a probabilistic model was built using Bayesian networks. The model included the following variables: hygiene conditions, ergonomic conditions, job demands, physical symptoms, psychological symptoms, and occupational accidents. The study demonstrated that there were strong relationships between hygiene conditions and occupational accidents; it has been shown that poor hygienic conditions duplicate the probability of accident. Physical symptoms increased almost 50% due to poor ergonomic conditions. And finally, high job demands almost duplicated the psychological symptoms. The investigation also showed a high degree of interdependence between physical and psychological symptomatologies and the relationship between these and occupational accidents.  相似文献   
732.
733.
Physical therapists engage in work tasks that expose them to occupational risk factors related to musculoskeletal disorders. Due to the gap in the literature on instruments focused on those workers, this study adapted a job factors questionnaire to physical therapists, and assessed its psychometric properties. The questionnaire was adapted and its content validity was established. The psychometric properties were evaluated among 142 physical therapists. Reliability was verified using the temporal-stability design and internal consistency. Construct validity was assessed with the known-groups technique. Test-retest results demonstrated intraclass correlation coefficients between .82 and .90 (p < .001). Cronbach's α of .91 verified the reliability of the questionnaire. The known-groups technique demonstrated a statistically significant difference on the scores of the items when physical therapists were compared to office workers. The results indicated that the adapted questionnaire had acceptable psychometric properties for assessing problematic job factors among physical therapists working in hospitals.  相似文献   
734.
Humanitarian governance is usually understood according to the classic, Dunantist paradigm that accords central importance to international humanitarian agencies. However, this is increasingly paralleled by ‘resilience humanitarianism’ that focuses, among other things, on including national actors in humanitarian governance. This article views humanitarian governance as emerging through interactions between authorities, implementing agencies and communities. It is based on interactive ethnography in five countries by Partners for Resilience (PfR). Using the Theory of Change (ToC) tool, it analyses the various interpretations and priorities of actors involved in humanitarian problems, solutions and programme governance. For example, PfR had a ‘software’ focus, aiming to unlock communities’ potential for resilience, whereas communities and authorities preferred to receive tangible ‘hardware’ support. The findings highlight the crucial role of local authorities in shaping humanitarian aid. This is especially pertinent in view of the international agenda to localise aid, which requires the understanding and support of national actors in order to responsibly protect the vulnerable.  相似文献   
735.
Environmental Science and Pollution Research - Arsenic (As) concentrations and deposition fluxes were measured in snow and rime at 10 mountain-top sites near the borders between the Czech Republic...  相似文献   
736.
Environmental Science and Pollution Research - Wastewater and effluent discharges are the main causes of receiving water body pollution and important challenges in water quality management. Among...  相似文献   
737.
Environmental Science and Pollution Research - Denitrification and NH3 volatilization are the main removal processes of nitrogen in coastal saline soils. In this incubation study, the effects of...  相似文献   
738.
Understanding human behavior is vital to developing interventions that effectively lead to proenvironmental behavior change, whether the focus is at the individual or societal level. However, interventions in many fields have historically lacked robust forms of evaluation, which makes it hard to be confident that these conservation interventions have successfully helped protect the environment. We conducted a systematic review to assess how effective nonpecuniary and nonregulatory interventions have been in changing environmental behavior. We applied the Office of Health Assessment and Translation systematic review methodology. We started with more than 300,000 papers and reports returned by our search terms and after critical appraisal of quality identified 128 individual studies that merited inclusion in the review. We classified interventions by thematic area, type of intervention, the number of times audiences were exposed to interventions, and the length of time interventions ran. Most studies reported a positive effect (n = 96). The next most common outcome was no effect (n = 28). Few studies reported negative (n = 1) or mixed (n = 3) effects. Education, prompts, and feedback interventions resulted in positive behavior change. Combining multiple interventions was the most effective. Neither exposure duration nor frequency affected the likelihood of desired behavioral change. Comparatively few studies tested the effects of voluntary interventions on non-Western populations (n = 17) or measured actual ecological outcome behavior (n = 1). Similarly, few studies examined conservation devices (e.g., energy-efficient stoves) (n = 9) and demonstrations (e.g., modeling the desired behavior) (n = 5). There is a clear need to both improve the quality of the impact evaluation conducted and the reporting standards for intervention results.  相似文献   
739.
Environmental Science and Pollution Research - Bisphenol-A is widely used chemical in industry and unfortunately often detected in natural waters. Considered as an emerging pollutant, bisphenol-A...  相似文献   
740.
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号