全文获取类型
收费全文 | 5874篇 |
免费 | 97篇 |
国内免费 | 163篇 |
专业分类
安全科学 | 153篇 |
废物处理 | 287篇 |
环保管理 | 421篇 |
综合类 | 1116篇 |
基础理论 | 1447篇 |
环境理论 | 5篇 |
污染及防治 | 1874篇 |
评价与监测 | 453篇 |
社会与环境 | 339篇 |
灾害及防治 | 39篇 |
出版年
2023年 | 70篇 |
2022年 | 183篇 |
2021年 | 176篇 |
2020年 | 112篇 |
2019年 | 112篇 |
2018年 | 209篇 |
2017年 | 236篇 |
2016年 | 317篇 |
2015年 | 216篇 |
2014年 | 323篇 |
2013年 | 458篇 |
2012年 | 342篇 |
2011年 | 391篇 |
2010年 | 263篇 |
2009年 | 231篇 |
2008年 | 360篇 |
2007年 | 324篇 |
2006年 | 263篇 |
2005年 | 213篇 |
2004年 | 185篇 |
2003年 | 162篇 |
2002年 | 140篇 |
2001年 | 95篇 |
2000年 | 55篇 |
1999年 | 53篇 |
1998年 | 29篇 |
1997年 | 22篇 |
1996年 | 26篇 |
1995年 | 37篇 |
1994年 | 35篇 |
1993年 | 16篇 |
1992年 | 21篇 |
1991年 | 25篇 |
1990年 | 28篇 |
1989年 | 22篇 |
1988年 | 19篇 |
1987年 | 11篇 |
1986年 | 27篇 |
1985年 | 14篇 |
1984年 | 13篇 |
1983年 | 15篇 |
1982年 | 20篇 |
1981年 | 11篇 |
1980年 | 14篇 |
1978年 | 10篇 |
1976年 | 11篇 |
1966年 | 16篇 |
1965年 | 10篇 |
1956年 | 11篇 |
1954年 | 9篇 |
排序方式: 共有6134条查询结果,搜索用时 31 毫秒
191.
Jorge Alberto Vieira Costa Bárbara Catarina Bastos Freitas Camila Gonzales Cruz Jéssica Silveira Michele Greque Morais 《Journal of environmental science and health. Part. B》2019,54(5):366-375
The loss of yields from agricultural production due to the presence of pests has been treated over the years with synthetic pesticides, but the use of these substances negatively affects the environment and presents health risks for consumers and animals. The development of agroecological systems using biopesticides represents a safe alternative that contributes to the reduction of agrochemical use and sustainable agriculture. Microalgae are able to biosynthesize a number of metabolites with potential biopesticidal action and can be considered potential biological agents for the control of harmful organisms to soils and plants. The present work aims to provide a critical perspective on the consequences of using synthetic pesticides, offering as an alternative the biopesticides obtained from microalgal biomass, which can be used together with the implementation of environmentally friendly agricultural systems. 相似文献
192.
es Ruiz de Arcaute Celeste Ossana Natalia A. Pérez-Iglesias Juan Manuel Soloneski Sonia Larramendy Marcelo L. 《Environmental science and pollution research international》2019,26(20):20485-20498
Environmental Science and Pollution Research - Pesticides might increase the production of reactive oxygen species (ROS). Dicamba (DIC) and 2,4-dichlorophenoxyacetic acid (2,4-D) are auxinic... 相似文献
193.
Segovia-Sandoval Sonia Judith Padilla-Ortega Erika Carrasco-Marín Francisco Berber-Mendoza María Selene Ocampo-Pérez Raúl 《Environmental science and pollution research international》2019,26(25):25916-25931
Environmental Science and Pollution Research - In this work, it was analyzed the behavior of three commercial activated carbons with different textural and chemical properties to adsorb... 相似文献
194.
Filgueiras Ana Virginia Gago Jesús Campillo Juan Antonio León Víctor Manuel 《Environmental science and pollution research international》2019,26(21):21264-21273
Environmental Science and Pollution Research - Microplastics (MPs) are widely recognised as a contaminant of emerging concern in the marine environment. This work provides original data of the... 相似文献
195.
Solimeno Alessandro Gómez-Serrano Cintia Acién Francisco Gabriel 《Environmental science and pollution research international》2019,26(25):25855-25868
Environmental Science and Pollution Research - A new set up of the integral mechanistic BIO_ALGAE model that describes the complex interactions in mixed algal-bacterial systems was developed to... 相似文献
196.
197.
198.
This paper introduces an integrated water management model at the industrial park level. It suggests four approaches to water
management: first, direct water reuse among users; second, water reuse among users by blending with freshwater; third, water
reuse between users and a wastewater treatment plant; and fourth, groundwater recharge by reclaimed wastewater or other feasible
applications in order to optimize the overall water efficiency. The model results in a comprehensive management methodology
for optimizing water resources within an industrial park, seeking potential water reuse among industries, and incorporating
the size and cost of reclaimed wastewater delivery systems. A case study is employed to test the model’s feasibility. An economic
analysis of the optimized water use network is also carried out, showing the potential water and cost savings. 相似文献
199.
应用核磁共振技术找水是核磁共振技术应用的新领域,核磁共振找水是一种直接探测地下水的地球物理方法。本文介绍了在贫水地区一个指定范围内探测地下水例子。比较所做的三个僚共振测点的工作结果,确定出含中水情况较好部位,配合做了率对四极测探,其工作结果指示出一低阻区域,是地下水富集带。在设计的钻井位置钻探探打出了优质 下水,验证了核磁共振找水方法的推断结果。在对该磁共振找水方法研究和实践的基础上,指出:核磁共 相似文献
200.
To achieve a safe and reliable drinking water supply, water producers need to manage a large range of risks regarding both water quality and quantity. A risk management approach where risks are systematically identified and handled in a preventive manner is promoted by the World Health Organization and supported by researchers and drinking water experts worldwide. Risk assessment is an important part of such a management approach, and a variety of tools for risk assessment are described in the literature. There is, however, little knowledge of how drinking water risk assessment is performed in practice, including which tools that are actually used. This study investigates the use of risk assessment tools, and the approach to risk management, on a local level in the Swedish water sector. It is based on interviews with key persons from a targeted selection of water producers. We find that the application of tools as well as the approach to risk assessment and management differs considerably between the water producers. The tools most frequently used are mainly the ones promoted or required by Swedish national organizations. Although many of the water producers have done some kind of risk assessment, most have not implemented a risk management approach. Furthermore, their knowledge of the concepts of risk and risk management is often limited. The largest challenge identified is to prioritize risk assessment, so that it is actually performed and then used as a basis for managing risk in a systematic way. 相似文献