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   2480篇
  免费   14篇
  国内免费   13篇
安全科学   52篇
废物处理   178篇
环保管理   216篇
综合类   262篇
基础理论   524篇
环境理论   3篇
污染及防治   819篇
评价与监测   273篇
社会与环境   173篇
灾害及防治   7篇
  2023年   34篇
  2022年   88篇
  2021年   57篇
  2020年   28篇
  2019年   45篇
  2018年   88篇
  2017年   68篇
  2016年   116篇
  2015年   69篇
  2014年   130篇
  2013年   223篇
  2012年   135篇
  2011年   188篇
  2010年   138篇
  2009年   129篇
  2008年   139篇
  2007年   130篇
  2006年   109篇
  2005年   91篇
  2004年   69篇
  2003年   71篇
  2002年   60篇
  2001年   60篇
  2000年   39篇
  1999年   19篇
  1998年   16篇
  1997年   11篇
  1996年   4篇
  1995年   16篇
  1994年   17篇
  1993年   6篇
  1992年   13篇
  1991年   9篇
  1990年   7篇
  1989年   5篇
  1988年   6篇
  1985年   3篇
  1983年   4篇
  1979年   2篇
  1966年   2篇
  1965年   3篇
  1964年   3篇
  1963年   2篇
  1962年   4篇
  1961年   2篇
  1960年   3篇
  1958年   5篇
  1957年   2篇
  1956年   2篇
  1940年   3篇
排序方式: 共有2507条查询结果,搜索用时 46 毫秒
41.
42.
Environmental Science and Pollution Research - This paper investigates the relationship between income inequality and environmental degradation for the case of Turkey between 1987 and 2017 through...  相似文献   
43.
High pressure tubular reactors for the production of Low Density Polyethylene (LDPE) are, for safety reasons, enclosed in a protective bay open towards the sky. They are becoming longer and larger due to production capacity increases. TECHNIP has historically designed these reactor bays based on Licensor information, which include more or less empirical correlations. Further capacity developments require the design of these concrete enclosures to be challenged. With this in mind, the present study shows the interest of implementing an innovative methodology based upon a risk-based approach to define new design criteria for the enclosure walls. The method, which combines both risk analysis with computational fluid dynamics modelling (3D CFD) and non-linear finite element analysis (NLFEA) tools, allows a clear determination of the design overpressure loads applied on walls and offers an optimisation of the concrete wall thickness. The CFD study also leads to a better understanding of the ventilation and efficiency of safety systems (gas detection, depressurisation) with possibility for improvement of the hazardous area classification rating.  相似文献   
44.
Environmental Science and Pollution Research - For the photocatalytic degradation of antioxidant 2,6-di-tert-butyl-hydroxytoluene (BHT), several TiO2-based composites have been prepared in MWCNT...  相似文献   
45.
Environmental Science and Pollution Research - In this study, the photocatalytic degradation of four fungicides, myclobutanil, penconazole and difenoconazole (triazole compounds) and boscalid...  相似文献   
46.
Quantitative assessments have long been used to evaluate the condition of the natural environment, providing information for standard setting, adaptive management, and monitoring. Similar approaches have been developed to measure environmental governance, however, the end result (e.g., numeric indicators) belies the subjective and normative judgments that are involved in evaluating governance. We demonstrate a framework that makes this information transparent, through an application of the Freshwater Health Index in three different river basins in Latin America. Water Governance is measured on a 0–100 scale, using data derived from perception-based surveys administered to stakeholders. Results suggest that water governance is a primary area of concern in all three places, with low overall scores (Guandu-26, Alto Mayo-38, Bogotá-43). We conclude that this approach to measuring governance at the river basin scale provides valuable information to support monitoring and decision making, and we offer suggestions on how it can be improved.Electronic supplementary materialThe online version of this article (10.1007/s13280-020-01407-8) contains supplementary material, which is available to authorized users.  相似文献   
47.
Environmental Science and Pollution Research - The aim of this study was to investigate the protective efficacy of diosmin against subacute deltamethrin exposure. For this purpose, 40 male Wistar...  相似文献   
48.
Environmental Science and Pollution Research - Nowadays, the use of different nanoscale structures has been introduced to a large number of research areas. One of these is the treatment and...  相似文献   
49.
Environmental Science and Pollution Research - Persistent organic pollutants (POPs) are still globally distributed and can exert different effects on ecosystems. Little is known about the...  相似文献   
50.
Environmental Science and Pollution Research - Environmental arsenic exposure in adults and children has been associated with a reduction in the expression of club cell secretory protein (CC16) and...  相似文献   
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