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   1393篇
  免费   12篇
  国内免费   46篇
安全科学   60篇
废物处理   136篇
环保管理   124篇
综合类   123篇
基础理论   218篇
环境理论   1篇
污染及防治   479篇
评价与监测   224篇
社会与环境   74篇
灾害及防治   12篇
  2024年   1篇
  2023年   40篇
  2022年   160篇
  2021年   125篇
  2020年   46篇
  2019年   56篇
  2018年   69篇
  2017年   87篇
  2016年   79篇
  2015年   42篇
  2014年   54篇
  2013年   167篇
  2012年   72篇
  2011年   88篇
  2010年   60篇
  2009年   50篇
  2008年   41篇
  2007年   47篇
  2006年   28篇
  2005年   16篇
  2004年   26篇
  2003年   17篇
  2002年   11篇
  2001年   9篇
  2000年   9篇
  1999年   6篇
  1998年   1篇
  1997年   3篇
  1996年   1篇
  1995年   5篇
  1994年   8篇
  1993年   2篇
  1992年   4篇
  1991年   1篇
  1990年   1篇
  1989年   2篇
  1988年   2篇
  1985年   4篇
  1984年   1篇
  1983年   1篇
  1981年   1篇
  1979年   1篇
  1976年   1篇
  1974年   1篇
  1970年   1篇
  1965年   1篇
  1964年   2篇
  1959年   1篇
排序方式: 共有1451条查询结果,搜索用时 15 毫秒
11.
Environmental Science and Pollution Research - The aim of this study is to investigate the effect of the polymethyl acrylate (PMA) additive on the formation of particulate matter (PM) and nitrogen...  相似文献   
12.
Environmental Science and Pollution Research - This research was aimed to investigate the leaching behavior of zinc and copper from a porcelain stone tailings sample using RSM-CCD modeling. The...  相似文献   
13.
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   
14.
Despite its extraordinary price, ceramic membrane can still be able to surpass polymeric membrane in the applications that require high temperature and pressure conditions, as well as harsh chemical environment. In order to alleviate the high cost of ceramic material that still becomes one of the major factors that contributes to the high production cost of ceramic membrane, various attempts have been made to use low cost ceramic materials as alternatives to well-known expensive ceramic materials such as alumina, silica, and zirconia in the fabrication of ceramic membrane. Thus, local Malaysian kaolin has been chosen as the ceramic material in this study for the preparation of kaolin hollow fibre membrane since it is inexpensive and naturally abundant in Malaysia. Due to the fact that the sintering process plays a prominent role in obtaining the desired morphology, properties, and performances of prepared ceramic membrane, the aim of this work was to study the effect of different sintering temperatures applied (ranging from 1200 to 1500 °C) in the preparation of kaolin hollow fibre membrane via dry/wet phase inversion-based spinning technique and sintering process. The morphology and properties of membrane were then characterised by SEM, AFM, FTIR, XRD, and three-point bending test, while the performances of membrane were investigated by conducting water permeation and Reactive Black 5 (RB5) dye rejection tests. From the experimental results obtained, the sintering temperature of 1400 °C could be selected as the optimum sintering temperature in preparing the kaolin hollow fibre membrane with the dense sponge-like structure of separation layer that resulted in the good mechanical strength of 70 MPa with the appreciable water permeation of 75 L/h m2 bar and RB5 rejection of 68%.  相似文献   
15.
Environmental Science and Pollution Research - Copper (Cu) is an important trace element required for several biological processes. The use of copper is increasing gradually in several...  相似文献   
16.
17.
Environmental Science and Pollution Research - Reliable and accurate prediction model capturing the changes in solar radiation is essential in the power generation and renewable carbon-free energy...  相似文献   
18.
Environmental Science and Pollution Research - The COVID-19 pandemic is straining public health systems and the global economy, triggering unprecedented measures by governments around the globe....  相似文献   
19.
Environmental Science and Pollution Research - Globally, climate change is an alarming threat to the livestock industry. Such changes in the climate can also adversely affect the returns of...  相似文献   
20.

This study is trying to explore the relationship between corporate social responsibility (CSR) disclosures and financial performances (FP) through mediating role of the employee productivity (EP). This study classifies the CSR performances into four contexts, for instance, environment social governance (ESG), environmental improvement activity scores of CSR, social welfare activity score, and governance structure improvement score. The banking performance is classified into three different aspects such as returns on assets (ROA), returns on equity (ROE), and nominal interest margin profit (NIMP). The study covers the data set start from 2008 to 2019 regarding thirty commercial banks of China. The study uses the linear, non-linear, and quadratic techniques to explore the association between CSR disclosures and banking performances. The linear model result shows that the governance score is significant influencing the banking performance. Moreover, the employee productivities are also positive significant affecting the baking performances. The non-linear results of model show that composite score of ESG with employee productivity has significant influence on financial performance.

  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