全文获取类型
收费全文 | 202篇 |
免费 | 4篇 |
国内免费 | 3篇 |
专业分类
安全科学 | 7篇 |
废物处理 | 21篇 |
环保管理 | 17篇 |
综合类 | 12篇 |
基础理论 | 34篇 |
环境理论 | 1篇 |
污染及防治 | 48篇 |
评价与监测 | 41篇 |
社会与环境 | 27篇 |
灾害及防治 | 1篇 |
出版年
2023年 | 4篇 |
2022年 | 23篇 |
2021年 | 27篇 |
2020年 | 5篇 |
2019年 | 6篇 |
2018年 | 13篇 |
2017年 | 13篇 |
2016年 | 19篇 |
2015年 | 14篇 |
2014年 | 8篇 |
2013年 | 29篇 |
2012年 | 12篇 |
2011年 | 12篇 |
2010年 | 5篇 |
2009年 | 5篇 |
2008年 | 5篇 |
2007年 | 1篇 |
2006年 | 2篇 |
2005年 | 1篇 |
2004年 | 1篇 |
2002年 | 1篇 |
1989年 | 1篇 |
1986年 | 1篇 |
1985年 | 1篇 |
排序方式: 共有209条查询结果,搜索用时 31 毫秒
71.
Yousef Mohammadian Ali Akbar Saboor Yaraghi Hossein Kakooei Mohammad Hajaghazadeh 《毒物与环境化学》2013,95(6):1037-1047
Carbon nanotubes (CNTs) have found numerous applications in various industries. Recently, adverse effects of these materials on human and animal cells in vitro have been reported. In the present study, the cytotoxicity of single-walled carbon nanotubes (SWCNTs), multi-walled carbon nanotubes (MWCNTs), and chrysotile asbestos in human lung epithelial cells has been studied using the 3-(4,5-dimethylthiazol-2-yl)-2,5-diphenyltetrazolium bromide assay. The cells were exposed for 6 h and 24 h to between 0.97 and 1500 μg mL?1 of CNTs and chrysotile fibers prepared in two culture media containing 5% serum and 0.5% dimethylsulfoxide. Dose–response curves were obtained to determine the nonobservable adverse effect concentration and the half-maximum inhibitory concentration (IC50). The way of dispersion affects the cytotoxicity of CNTs. For MWCNT, the toxicological indexes were lower than for SWCNT. Chrysotile fibers were even less cytotoxic than CNTs. Therefore, workplace control measures are recommended as priority for occupational and environmental conditions. 相似文献
72.
Shaheed Rawaa Mohammadian Abdolmajid Kheirkhah Gildeh Hossein 《Environmental Fluid Mechanics》2019,19(2):543-568
Environmental Fluid Mechanics - Bends and confluences are often observed in rivers, and one of the phenomena that characterize flows in open channel bends and confluences is secondary current.... 相似文献
73.
74.
Rheological Investigation of Wood-Polypropylene Composites in Rotational Plate Rheometer 总被引:1,自引:0,他引:1
Ehsan Soury Amir Hossein Behravesh Ghaus M. Rizvi Nathan Jafarian Jam 《Journal of Polymers and the Environment》2012,20(4):998-1006
In this research work, the rheological properties of Wood-Plastic Composites (WPC) with some selected compositions are investigated. WPC is being recognized as a green composite that, in the past 20?years, has emerged to a commercial product. A study on rheological properties of these materials can give insight into the proper selection of composition and processing condition. Two grades of polypropylene (PP) with two different melt flow indexes (MFI) were selected to prepare WPCs with three different wood contents (50, 60 and 70?% wt.). Four types of rheological experiments were performed utilizing a rotational plate rheometer: (1) strain sweep, (2) frequency sweep, (3) temperature sweep and (4) steady shear rate sweep. The independent variables were chosen as wood content, MFI of polymer (two types), melt temperature, frequency or shear rate, the gap between the plates, and strain percentage. The strain sweep tests specified the linear and non-linear viscoelastic zones of each experiment. The results of frequency sweep experiments indicated that increasing the wood content and frequency and also decreasing the strain percentage and the gap distance, lead to an increase in the storage modulus. Regarding the loss modulus, wood percentage and the gap distance presented positive effects and strain percentage showed a negative effect. The behavior of complex viscosity was almost similar to that of the storage modulus but increasing the frequency caused a decrease in the complex viscosity. In case of temperature sweep experiments, it was observed that the rheological properties exhibit a rapid change near to a temperature of 160?°C. The results also showed that beyond this point, increasing the wood content and also MFI of polypropylene caused an increase in the storage modulus. The results of steady shear rate sweep experiments specified that increasing wood content and also decreasing the MFI of PP, the gap distance and shear rate lead to an increase in both viscosity and shear stress. 相似文献
75.
Ali Akbar Safari Sinegani Hossein Mirahamdi Araki 《Environmental Chemistry Letters》2010,8(2):129-137
Sorption of metal ions by soil and clay minerals is a complex process involving different mechanisms, and controlled by different
variables that can interact. The aim of this work was to study the retention mechanisms of Pb ions on different soil samples.
Surface soils were sampled from Guilan and Hamadan provinces in north and northwest of Iran with temperate and semiarid climates.
The adsorption isotherms of Pb on the soils have been studied at 15, 27 and 37°C. The adsorption data for different soils
were fitted into Langmuir and Freundlich models. Temperate soil samples had higher clay content, cation exchange capacity,
dichromate (oxidable) organic carbon, total Kjeldahl-nitrogen, biological activity, amorphous and crystalline Fe and Al, but
semiarid soil samples had higher sand content, pH, equivalent calcium carbonate, available P and K. Lead adsorption data obtained
from semiarid soils against those obtained from temperate soils were better fitted in both Langmuir and Freundlich models.
Langmuir constants Q
0 for Pb adsorption in semiarid soils were considerably lower than those for Pb adsorption in temperate soils. However, the
binding energy (K
L) of Pb and Freundlich constant n were higher for data of semiarid soils. The effect of temperature on the Pb adsorption was positive especially in temperate
soils; however, soil properties had higher effects on Pb adsorption. 相似文献
76.
Jahangir Mohammad Hossein Mousavi Seyed Ali Asayesh Zarchi Ruhollah 《Environment, Development and Sustainability》2021,23(10):14494-14527
Environment, Development and Sustainability - The tourism sectors consume a high amount of electrical power, which in most cases is supplied by the electrical grid and diesel generator. As a... 相似文献
77.
Marie Mequannt Yirga Fikadu Haile Mebrahtu Ehteshammajd Shaghayegh Azadi Hossein Scheffran Jürgen 《Environment, Development and Sustainability》2021,23(9):12904-12924
Environment, Development and Sustainability - Smallholder farmers are the most vulnerable community to climate change in Ethiopia since they rely heavily on the subsistence rain-fed farming system.... 相似文献
78.
Safaynikoo Peymaneh Dehghani Mohammad Hossein 《Environmental Economics and Policy Studies》2021,23(2):441-466
Environmental Economics and Policy Studies - Economists have long argued over the political economy of tradable emission permits, especially the political pressure of lobby groups on international... 相似文献
79.
Karimi Pouria Azarpira Hossein Rasolevandi Tayebeh Sarkhosh Maryam Azizi Shohreh Mohseni Seyed Mohsen Sadani Mohsen 《Environmental science and pollution research international》2023,30(6):14630-14640
Environmental Science and Pollution Research - In this study, simultaneous removal of an organic matter (diazinon, DIZ) and an inorganic substance (chromium, Cr) was used. Breaking down of organic... 相似文献
80.
Eftekhari Mohammad Akrami Mehran Gheibi Mohammad Azizi-Toupkanloo Hossein Fathollahi-Fard Amir Mohammad Tian Guangdong 《Environmental science and pollution research international》2020,27(35):43999-44021
Environmental Science and Pollution Research - In this paper, folic acid–coated graphene oxide nanocomposite (FA-GO) is used as an adsorbent for the treatment of heavy metals including... 相似文献