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   2234篇
  免费   103篇
  国内免费   750篇
安全科学   167篇
废物处理   135篇
环保管理   161篇
综合类   1239篇
基础理论   394篇
污染及防治   690篇
评价与监测   83篇
社会与环境   60篇
灾害及防治   158篇
  2024年   2篇
  2023年   42篇
  2022年   122篇
  2021年   102篇
  2020年   60篇
  2019年   71篇
  2018年   79篇
  2017年   107篇
  2016年   115篇
  2015年   145篇
  2014年   157篇
  2013年   229篇
  2012年   180篇
  2011年   189篇
  2010年   153篇
  2009年   126篇
  2008年   146篇
  2007年   124篇
  2006年   104篇
  2005年   76篇
  2004年   63篇
  2003年   74篇
  2002年   61篇
  2001年   58篇
  2000年   59篇
  1999年   79篇
  1998年   61篇
  1997年   56篇
  1996年   49篇
  1995年   49篇
  1994年   27篇
  1993年   38篇
  1992年   31篇
  1991年   24篇
  1990年   14篇
  1989年   3篇
  1988年   5篇
  1987年   1篇
  1984年   3篇
  1981年   2篇
  1958年   1篇
排序方式: 共有3087条查询结果,搜索用时 312 毫秒
941.
Abstract

It has been generally recognized that strategic environmental assessment integrates environment and development into decision-making and becomes an important decision-making tool for implementing sustainable development. This paper firstly introduces the relationships of SEA, public participation(PP)and information publicity(IP), then discusses the key parts in enforcing the effective process of PP: They are the methods for how to make sufficient information open (What), when to implement PP (When), who will determinate the public (Who), and how to make the models of PP (How). Six cases are compared and analyzed. At last, ways to improve the effectiveness of PP in China is also presented.  相似文献   
942.
• A ZnO-biochar hybrid composite was prepared by solvothermal-pyrolysis synthesis. • The superhydrophobic composite is suitable for selective recovery of Re(VII). • The adsorption mechanism is elucidated by experiments and material characterization. The recovery of scattered metal ions such as perrhenate (Re(VII)) from industrial effluents has enormous economic benefits and promotes resource reuse. Nanoscale-metal/biochar hybrid biosorbents are attractive for recovery but are limited by their insufficient stability and low selectivity in harsh environments. Herein, a superstable biochar-based biosorbent composed of ZnO nanoparticles with remarkable superhydrophobic features is fabricated, and its adsorption/desorption capabilities toward Re(VII) in strongly acidic aqueous solutions are investigated. The ZnO nanoparticle/biochar hybrid composite (ZBC) exhibits strong acid resistance and high chemical stability, which are attributable to strong C-O-Zn interactions between the biochar and ZnO nanoparticles. Due to the advantages of its hydrolytic stability, superhydrophobicity, and abundance of Zn-O sites, the ZBC proves suitable for the effective and selective separation of Re(VII) from single, binary and multiple ion systems (pH= 1), with a maximum sorption capacity of 29.41 mg/g. More importantly, this material also shows good recyclability and reusability, with high adsorption efficiency after six adsorption-desorption cycles. The findings in this work demonstrate that a metal/biochar hybrid composite is a promising sorbent for Re(VII) separation.  相似文献   
943.
本研究利用发光细菌急性毒性实验测定了长江口及其邻近海域表层沉积物中有机污染物的复合毒性,同时运用气相色谱-质谱联用仪测定了沉积物中16种美国环境保护局(United States Environmental Protection Agency, US EPA)规定的优先控制的多环芳烃(polycyclic aromatic hydrocarbons, PAHs)的浓度。在此基础上,分析其时空分布特征及多环芳烃毒性贡献,并评估其环境风险。结果表明,2019年长江口及邻近海域表层沉积物中16种PAHs总浓度范围为32.84~283.47 ng·g(-1);2020年浓度范围为66.93~132.64 ng·g(-1);2020年浓度范围为66.93~132.64 ng·g(-1)。在空间分布上,2019年长江口表层沉积物中PAHs在靠近渔港的区域呈现较高浓度(S3=(283.47±29.94) ng·g(-1)。在空间分布上,2019年长江口表层沉积物中PAHs在靠近渔港的区域呈现较高浓度(S3=(283.47±29.94) ng·g(-1)),而2020年在靠近舟山岛的区域呈现较高浓度(L6=(132.64±9.95) ng·g(-1)),而2020年在靠近舟山岛的区域呈现较高浓度(L6=(132.64±9.95) ng·g(-1))。与2019年相比,2020年多环芳烃的平均浓度有所降低,且其细胞毒性量化指标——生物分析当量浓度(BEQ_(bio))的平均值(66.62 mg·kg(-1))。与2019年相比,2020年多环芳烃的平均浓度有所降低,且其细胞毒性量化指标——生物分析当量浓度(BEQ_(bio))的平均值(66.62 mg·kg(-1))远低于2019年(128.20 mg·kg(-1))远低于2019年(128.20 mg·kg(-1))。在长江口沉积物毒性当量浓度中PAHs所占比例较小,2019年和2020年由PAHs引起的细胞毒性的平均占比分别为4.46%和4.25%。该结果表明,检测到的PAHs仅能解释所观察到的复合毒性效应的一小部分,因此,还需要进一步对其他未检测的化学物质进行测试分析。  相似文献   
944.
Environmental Science and Pollution Research - With the large-scale construction of suburban railway viaducts, the noise problem along the viaducts is becoming more and more prominent. Conventional...  相似文献   
945.

There is a lack of proper research that highlights the impact of institutional quality (IQ) and renewable energy consumption (REC) on the carbon emission (CE). The significance of IQ and REC in the achievement of zero CE is highlighted in this research. The current research reports the effects of these important factors on the consumption-based carbon emissions in the G-7 countries from 1995 to 2018. Based on the outcome of the cointegration test, the long-run connection is recognized between IQ, REC, GDP, exports, imports, and consumption-based CE. The findings also validated that there exist significant decrease and increase in the CE in both the short and long run; for instance, IQ, REC, and exports decrease the CE, while imports and GDP increase the CE. The estimates of causality test showed that policies aimed at improving IQ, REC, GDP, exports, and imports have a significant impact on the CE. Consequently, based on these results, policymakers in the G-7 must prioritize IQ and REC to enhance environmental quality and attain carbon neutrality.

  相似文献   
946.
Environmental Science and Pollution Research - Tanzania is the only country bordering all three transboundary East African Great Lakes, i.e., Lake Victoria, Lake Tanganyika, and Lake Nyasa (Lake...  相似文献   
947.
Tan  Yi  Zhou  Xue  Peng  Yutao  Zheng  Zijing  Gao  Xing  Ma  Yan  Chen  Shuo  Cui  Shihao  Fan  Beibei  Chen  Qing 《Environmental science and pollution research international》2022,29(28):42372-42383
Environmental Science and Pollution Research - Diverse phosphorus-containing materials (PCMs) were widely applied in remediation of cadmium-contaminated soils, and their effects on the change of...  相似文献   
948.
Environmental Science and Pollution Research - Globally, potentially toxic elements (PTEs) and bacterial contamination pose health hazards, persistency, and genotoxicity in the groundwater aquifer....  相似文献   
949.

Semi-coking wastewater contains a rich source of toxic and refractory compounds. Three-dimensional electro-Fenton (3D/EF) process used CuFe2O4 as heterocatalyst and activated carbon (AC) as particle electrode was constructed for degrading semi-coking wastewater greenly and efficiently. CuFe2O4 nanoparticles were prepared by coprecipitation method and characterized by X-ray diffraction (XRD), scanning electron microscopy (SEM), and energy disperse spectroscopy (EDS). Factors like dosage of CuFe2O4, applied voltage, dosage of AC and pH, which effect COD removal rate of semi-coking waste water were studied. The results showed that COD removal rate reached to 80.9% by 3D/EF process at the optimum condition: 4 V, 0.3 g of CuFe2O4, 1 g of AC and pH?=?3. Trapping experiment suggesting that hydroxyl radical (?OH) is the main active radical. The surface composition and chemical states of the fresh and used CuFe2O4 were analyzed by XPS indicating that Fe, Cu, and O species are involved into the 3D/EF process. Additionally, anode oxidation and the adsorption and catalysis of AC are also contributed to the bleaching of semi-coking waste water. The possible mechanisms of 3D/EF for degrading semi-coking waste water by CuFe2O4 heterocatalyst were proposed.

  相似文献   
950.
Environmental Science and Pollution Research - Sulfadiazine (SDZ) is a typical persistent sulfonamide antibiotic, which has been widely detected in natural drinking water sources. The degradation...  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