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   491篇
  免费   2篇
  国内免费   23篇
安全科学   12篇
废物处理   54篇
环保管理   48篇
综合类   43篇
基础理论   62篇
环境理论   1篇
污染及防治   193篇
评价与监测   69篇
社会与环境   31篇
灾害及防治   3篇
  2023年   16篇
  2022年   76篇
  2021年   53篇
  2020年   21篇
  2019年   14篇
  2018年   21篇
  2017年   25篇
  2016年   23篇
  2015年   16篇
  2014年   23篇
  2013年   45篇
  2012年   30篇
  2011年   31篇
  2010年   24篇
  2009年   23篇
  2008年   10篇
  2007年   13篇
  2006年   10篇
  2005年   5篇
  2004年   8篇
  2003年   5篇
  2002年   3篇
  2001年   2篇
  2000年   2篇
  1999年   1篇
  1997年   1篇
  1996年   1篇
  1994年   1篇
  1992年   1篇
  1991年   1篇
  1987年   1篇
  1985年   2篇
  1983年   1篇
  1982年   1篇
  1980年   1篇
  1977年   1篇
  1972年   1篇
  1964年   1篇
  1963年   2篇
排序方式: 共有516条查询结果,搜索用时 15 毫秒
481.
New dental remains of listriodont suids are described from the lower member of the early to middle Miocene Vihowa Formation of the Bugti Hills, Pakistan. The material is homogeneous in terms of morphology and dimensions and referred as a whole to Listriodon guptai Pilgrim, 1926. This species is also mentioned in coeval deposits of the Zinda Pir Dome, Pakistan, dating back to ca. 19 Ma. The early occurrence of an advanced listriodont in Pakistan constrains the age of acquisition of several characters correlated to lophodonty within Listriodontini, and raises major questions about the early history of the Old World Listriodontinae. Strong morphological similarity between Listriodon guptai and the African species Listriodon akatikubas found in the late early Miocene of Maboko (Kenya, ca. 16.5 Ma) suggests that this latter is most probably a migrant originating from Asia.  相似文献   
482.
Human noroviral infections are generally more common during winters in temperate regions. This study used a murine norovirus (MNV) as a human norovirus surrogate to test the effect of water temperature (4 and 25°C) on virus survival and its susceptibility to the levels of monochloramine (~1.89 ppm) to terminally disinfect municipally treated potable waters. The titre of MNV remained essentially unchanged for at least 24 h in raw river water at both temperatures. The virus became undetectable in <2 h in monochloramine-containing samples held at 25°C, but its titre remained virtually unaltered at 4°C (P < 0.05) under the same conditions. These findings strongly suggest that water temperature can influence the norovirucidal activity of monochloramine and its possible impact on the seasonality of outbreaks of noroviral infections.  相似文献   
483.
484.
Environmental Science and Pollution Research - Many species of devastating insect pests have acquired a high degree of resistance to insecticides in the field during the last few decades....  相似文献   
485.
Environmental Science and Pollution Research - Binary composite of zerovalent iron and titanium dioxide (Fe0/TiO2) was synthesized for the catalytic removal of dichlorophene (DCP) in the presence...  相似文献   
486.
Toxicity,degradation and analysis of the herbicide atrazine   总被引:3,自引:0,他引:3  
Excessive use of pesticides and herbicides is a major environmental and health concern worldwide. Atrazine, a synthetic triazine herbicide commonly used to control grassy and broadleaf weeds in crops, is a major pollutant of soil and water ecosystems. Atrazine modifies the growth, enzymatic processes and photosynthesis in plants. Atrazine exerts mutagenicity, genotoxicity, defective cell division, erroneous lipid synthesis and hormonal imbalance in aquatic fauna and nontarget animals. It has threatened the sustainability of agricultural soils due to detrimental effects on resident soil microbial communities. The detection of atrazine in soil and reservoir sites is usually made by IR spectroscopy, ELISA, HPLC, UPLC, LC–MS and GC–MS techniques. HPLC/LC–MS and GC–MS techniques are considered the most effective tools, having detection limits up to ppb levels in different matrices. Biodegradation of atrazine by microbial species is increasingly being recognized as an eco-friendly, economically feasible and sustainable bioremediation strategy. This review presents the toxicity, analytical techniques, abiotic degradation and microbial metabolism of atrazine.  相似文献   
487.
Environmental Science and Pollution Research - The construction of green finance index is a three-tiered process that involves macroeconomic, ecological, and monetary indicators. Therefore, this...  相似文献   
488.
Environmental Science and Pollution Research - Geothermal energy is one type of renewable source of energy that can be used as shallow geothermal system for the use of cooling and heating of...  相似文献   
489.
490.
Environmental Science and Pollution Research - Despite the nutritional benefits, bivalves like mussels are also an excellent aquatic heavy metal biomonitoring agent due to their high tolerance to...  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