全文获取类型
收费全文 | 455篇 |
免费 | 10篇 |
国内免费 | 5篇 |
专业分类
安全科学 | 12篇 |
废物处理 | 31篇 |
环保管理 | 50篇 |
综合类 | 66篇 |
基础理论 | 95篇 |
环境理论 | 1篇 |
污染及防治 | 149篇 |
评价与监测 | 40篇 |
社会与环境 | 22篇 |
灾害及防治 | 4篇 |
出版年
2023年 | 6篇 |
2022年 | 21篇 |
2021年 | 19篇 |
2020年 | 10篇 |
2019年 | 17篇 |
2018年 | 20篇 |
2017年 | 15篇 |
2016年 | 15篇 |
2015年 | 17篇 |
2014年 | 35篇 |
2013年 | 41篇 |
2012年 | 29篇 |
2011年 | 42篇 |
2010年 | 22篇 |
2009年 | 20篇 |
2008年 | 26篇 |
2007年 | 22篇 |
2006年 | 20篇 |
2005年 | 20篇 |
2004年 | 8篇 |
2003年 | 9篇 |
2002年 | 9篇 |
2001年 | 4篇 |
2000年 | 5篇 |
1999年 | 3篇 |
1998年 | 2篇 |
1997年 | 2篇 |
1994年 | 1篇 |
1991年 | 2篇 |
1988年 | 1篇 |
1986年 | 1篇 |
1985年 | 2篇 |
1984年 | 1篇 |
1983年 | 1篇 |
1981年 | 1篇 |
1979年 | 1篇 |
排序方式: 共有470条查询结果,搜索用时 781 毫秒
461.
Chemical oxygen demand reduction in coffee wastewater through chemical flocculation and advanced oxidation processes 总被引:1,自引:0,他引:1
The removal of the natural organic matter present in coffee processing wastewater through chemical coagulation-flocculation and advanced oxidation processes (AOP) had been studied. The effectiveness of the removal of natural organic matter using commercial flocculants and UV/H202, UV/O3 and UV/H2O2/O3 processes was determined under acidic conditions. For each of these processes, different operational conditions were explored to optimize the treatment efficiency of the coffee wastewater. Coffee wastewater is characterized by a high chemical oxygen demand (COD) and low total suspended solids. The outcomes of coffee wastewater treatment using coagulation-flocculation and photodegradation processes were assessed in terms of reduction of COD, color, and turbidity. It was found that a reduction in COD of 67% could be realized when the coffee wastewater was treated by chemical coagulation-flocculation with lime and coagulant T-1. When coffee wastewater was treated by coagulation-flocculation in combination with UV/H2O2, a COD reduction of 86% was achieved, although only after prolonged UV irradiation. Of the three advanced oxidation processes considered, UV/H2O2, UV/O3 and UV/H2O2/O3, we found that the treatment with UV/H2O2/O3 was the most effective, with an efficiency of color, turbidity and further COD removal of 87%, when applied to the flocculated coffee wastewater. 相似文献
462.
Levels and distribution of organophosphorus flame retardants and plasticizers in fishes from Manila Bay, the Philippines 总被引:2,自引:0,他引:2
Kim JW Isobe T Chang KH Amano A Maneja RH Zamora PB Siringan FP Tanabe S 《Environmental pollution (Barking, Essex : 1987)》2011,159(12):3653-3659
Organophosphorus compounds (OPCs) and stable isotope ratios (δ13C and δ15N) were determined in 58 fishes belonging to 20 species collected from Manila Bay, the Philippines. OPCs were detected in most of the samples and found up to μg/g lw (lipid weight) level, suggesting their ubiquitous presence in the coastal marine environment of the Philippines. Higher levels (>1000 ng/g lw) of total OPCs were determined in yellowstriped goatfish, silver sillago, tripletail wrasse and bumpnose trevally indicates either their active uptake from ambient water or lower metabolic capacity of these species. Levels of triphenyl phosphate (TPhP) in demersal species showed a positive correlation with δ15N, indicating that TPhP was adsorbed onto the particle, settled down to the bottom sediment and accumulated through the benthic food web rather than the pelagic. Estimated dietary intake of OPCs in Manila Bay fishes were four to five orders of magnitude lower than the proposed reference dose (RfD). 相似文献
463.
Agriculture, pesticides, food security and food safety 总被引:2,自引:0,他引:2
Decades ago, agrochemicals were introduced aiming at enhancing crop yields and at protecting crops from pests. Due to adaptation and resistance developed by pests to chemicals, every year higher amounts and new chemical compounds are used to protect crops, causing undesired side effects and raising the costs of food production. Eventually, new techniques, including genetically modified organisms (GMOs) resistant to pests, could halt the massive spread of agrochemicals in agriculture fields. Biological chemical-free agriculture is gaining also more and more support but it is still not able to respond to the need for producing massive amounts of food. The use of agrochemicals, including pesticides, remains a common practice especially in tropical regions and South countries. Cheap compounds, such as DDT, HCH and lindane, that are environmentally persistent, are today banned from agriculture use in developed countries, but remain popular in developing countries. As a consequence, persistent residues of these chemicals contaminate food and disperse in the environment. Coordinated efforts are needed to increase the production of food but with a view to enhanced food quality and safety as well as to controlling residues of persistent pesticides in the environment. 相似文献
464.
Carvalho Fernando L. Pinto Diana Schio Rejiane R. dos Santos Jaqueline P. Ketzer Felipe Silva Luis F. O. Dotto Guilherme L. 《Environmental science and pollution research international》2022,29(44):66348-66358
Environmental Science and Pollution Research - A real industrial effluent from the pre-treatment and painting processes was polished through adsorption using alternative biochar derived from grape... 相似文献
465.
Schirmer Waldir Nagel dos Santos Liliana Andréa Martins Kelly Geronazzo Gueri Matheus Vitor Diniz Jucá José Fernando Thomé 《Journal of Material Cycles and Waste Management》2023,25(5):2887-2899
Journal of Material Cycles and Waste Management - Anaerobic digestion of the organic fraction of municipal solid wastes is a well-established process for biogas production and various forms of... 相似文献
466.
Hollas Camila Ester Rodrigues Heloisa Campeão Oyadomari Vitoria Mitsue Agliardi Bolsan Alice Chiapetti Venturin Bruno Bonassa Gabriela Tápparo Deisi Cristina Abilhôa Hélen Caroline Zonta da Silva João Fernando Ferri Michelon William Cavaler Jadiane Paola Antes Fabiane Goldschmidt Steinmetz Ricardo Luís Radis Treichel Helen Kunz Airton 《Environmental science and pollution research international》2022,29(49):73599-73621
Environmental Science and Pollution Research - Improper disposal of animal waste is responsible for several environmental problems, causing eutrophication of lakes and rivers, nutrient overload in... 相似文献
467.
de Oliveira Paulo Renato Souza Trugilho Paulo Fernando de Oliveira Tiago Jose Pires 《Environmental science and pollution research international》2022,29(6):8559-8559
Environmental Science and Pollution Research - A Correction to this paper has been published: 10.1007/s11356-021-16529-z 相似文献
468.
de Oliveira Paulo Renato Souza Trugilho Paulo Fernando de Oliveira Tiago José Pires 《Environmental science and pollution research international》2022,29(6):8549-8558
Environmental Science and Pollution Research - Agro-industries, leveraged by the high demand of acai products, promote environmental impact through the generation of wastes in several locals in... 相似文献
469.
Lima Fernando Santos Scalize Paulo Sérgio Gabriel Ellen Flávia Moreira Gomes Raylane Pereira Gama Aline Rodrigues Demoliner Meriane Spilki Fernando Rosado Vieira José Daniel Gonçalves Carneiro Lilian Carla 《Food and environmental virology》2022,14(1):77-88
Food and Environmental Virology - Rural environments lack basic sanitation services. Facilities for obtaining water and disposing sewage are often under the initiative of each resident, who may not... 相似文献
470.
Palma-Goyes Ricardo E. Sosa-Rodríguez Fabiola S. Rivera Fernando F. Vazquez-Arenas Jorge 《Environmental science and pollution research international》2022,29(28):42201-42214
Environmental Science and Pollution Research - The aim of this study is to propose a continuous physicochemical model accounting for the active chlorine production used to degrade recalcitrant... 相似文献