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   128篇
  免费   3篇
  国内免费   4篇
安全科学   1篇
废物处理   6篇
环保管理   16篇
综合类   12篇
基础理论   25篇
环境理论   1篇
污染及防治   40篇
评价与监测   18篇
社会与环境   16篇
  2023年   3篇
  2022年   9篇
  2021年   12篇
  2020年   1篇
  2019年   8篇
  2018年   8篇
  2017年   4篇
  2016年   13篇
  2015年   8篇
  2014年   4篇
  2013年   16篇
  2012年   3篇
  2011年   8篇
  2010年   5篇
  2009年   7篇
  2008年   12篇
  2007年   1篇
  2006年   3篇
  2005年   3篇
  2004年   3篇
  2002年   2篇
  1987年   1篇
  1983年   1篇
排序方式: 共有135条查询结果,搜索用时 0 毫秒
131.
Considering the mounting evidences of the effects of air pollution on health, the present study was undertaken to assess the ambient air quality status in the fast growing urban centres of Haryana state, India. The samples were collected for total suspended particulate matter (TSPM), respirable suspended particulate matter (PM10), sulfur dioxide (SO2), and oxides of nitrogen (NO2) during different seasons from 8 districts of Haryana during January, 1999 to September, 2000. The four types of sampling sites with different anthropogenic activities i.e. residential, sensitive, commercial and industrial were identified in each city. The ambient air concentration of TSPM and PM10 observed was well above the prescribed standards at almost all the sites. The average ambient air concentrations of SO2 and NO2 were found below the permissible limits at all the centres. Comparatively higher concentration of SO2 was observed during winter seasons, which seems to be related with the enhanced combustion of fuel for space heating and relatively stable atmospheric conditions. Air Quality Index (AQI) prepared for these cities shows that residential, sensitive and commercial areas were moderately to severely polluted which is a cause of concern for the residents of these cities. The high levels of TSPM and SO2 especially in winter are of major health concern because of their synergistic action. The data from Hisar city reveals a significant increase in the total number of hospital visits/admissions of the patients with acute respiratory diseases during winter season when the level of air pollutants was high.  相似文献   
132.
Environment, Development and Sustainability - As per the objective of the present experimental investigation, influence of various configurations of manifolds for optimum flow distribution in...  相似文献   
133.
Environmental Science and Pollution Research - Long-term exposure to organic solvents is known to affect human health posing serious occupational hazards. Organic solvents are genotoxic, and they...  相似文献   
134.
135.
Environmental Science and Pollution Research - Environmental mutagens are chemical and physical substances in the environment that has a potential to induce a wide range of mutations and generate...  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