全文获取类型
收费全文 | 204篇 |
免费 | 1篇 |
国内免费 | 2篇 |
专业分类
安全科学 | 20篇 |
废物处理 | 19篇 |
环保管理 | 14篇 |
综合类 | 18篇 |
基础理论 | 25篇 |
污染及防治 | 57篇 |
评价与监测 | 42篇 |
社会与环境 | 12篇 |
出版年
2023年 | 5篇 |
2022年 | 25篇 |
2021年 | 13篇 |
2020年 | 6篇 |
2019年 | 9篇 |
2018年 | 12篇 |
2017年 | 20篇 |
2016年 | 17篇 |
2015年 | 10篇 |
2014年 | 8篇 |
2013年 | 29篇 |
2012年 | 15篇 |
2011年 | 8篇 |
2010年 | 6篇 |
2009年 | 3篇 |
2008年 | 2篇 |
2007年 | 7篇 |
2006年 | 3篇 |
2005年 | 2篇 |
2004年 | 1篇 |
2003年 | 3篇 |
2001年 | 1篇 |
1999年 | 1篇 |
1995年 | 1篇 |
排序方式: 共有207条查询结果,搜索用时 15 毫秒
51.
Parvaneh Nakhostin Panahi Ali Niaei Darush Salari Seyed Mahdi Mousavi Gérard Delahay 《环境科学学报(英文版)》2015,35(9):135-143
The influence of the various preparation methods of Cu-SAPO-34 nanocatalysts on the selective catalytic reduction of NO with NH3 under excess oxygen was studied. Cu-SAPO-34 nanocatalysts were prepared by using four techniques: conventional impregnation (IM), ultrasound-enhanced impregnation (UIM), conventional deposition precipitation (DP) using NaOH and homogeneous deposition precipitation (HDP) using urea. These catalysts were characterized in detail by various techniques such as N2-sorption, XRD, TEM, H2-TPR, NH3-TPD and XPS to understand the catalyst structure, the nature and the dispersed state of the copper species, and the acid sites for NH3 adsorption. All of the nanocatalysts showed high activities for NO removal. However, the activities were different and followed the sequence of Cu-SAPO-34 (UIM) > Cu-SAPO-34 (HDP) > Cu-SAPO-34 (IM) > Cu-SAPO-34 (DP). Based on the obtained results, it was concluded that the NO conversion on Cu-SAPO-34 nanocatalysts was mainly related to the high reducibility of the isolated Cu2 + ions and CuO species, the number of the acid sites and the dispersion of CuO species on SAPO-34. 相似文献
52.
This study is the first to be conducted in Lebanon on the isolation and molecular characterization and the antimicrobial resistance profile of environmental pathogenic bacterial strains. Fifty-seven samples of seawater, sediment, crab, and fresh water were collected during the spring and summer seasons of 2003. The isolation of Escherichia coli and Salmonella using appropriate selective media revealed that 94.7% of the tested samples were contaminated with one or both of the tested bacteria. The polymerase chain reaction (PCR) was then used to identify the species of both bacteria using various sets of primers. Many pathogenic E. coli isolates were detected by PCR out of which two were identified as O157:H7 E. coli. Similarly, the species of many of the Salmonella isolates was molecularly identified. The confirmed isolates of Salmonella and E. coli were then tested using the disk diffusion method for their susceptibility to four different antimicrobials revealing high rates of antimicrobial resistance. 相似文献
53.
54.
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
55.
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
56.
Ambio - The Syrian crisis caused a massive influx of displaced people into neighboring countries, with Lebanon hosting the highest per capita number of refugees (3:10). Water remains the most... 相似文献
57.
Root and shoot lead concentrations and the impact of chelating agents on these were investigated in two populations of the novel metallophyte Matthiola flavida. Plants were exposed in hydroponics to Pb(NO3)2, supplied alone, or in combination with citric acid, or EDDS. When supplied at concentrations expected to bind about 95% of the Pb in a solution containing 1-μM Pb (1000 μM citrate or 3.1 μM EDDS, respectively), the root and shoot Pb concentrations were dramatically lowered, in comparison with a 1-μM free ionic Pb control exposure. A 1-mM EDDS + 1-μM Pb treatment decreased the plants’ Pb concentrations further, even to undetectable levels in one population. At 100 μM Pb in a 1-mM EDDS-amended solution the Pb concentration increased strongly in shoots, but barely in roots, in comparison with the 1-μM Pb + 1-mM EDDS treatment, without causing toxicity symptoms. Further increments of the Pb concentration in the 1-mM EDDS-amended solution, i.e. to 800 and 990 μM, caused Pb hyperaccumulation, both in roots and in shoots, associated with a complete arrest of root growth and foliar necrosis. M. flavida seemed to be devoid of constitutive mechanisms for uptake of Pb-citrate or Pb-EDDS complexes. Hyperaccumulation of Pb-EDDS occurred only at high exposure levels. Pb-EDDS was toxic, but is much less so than free Pb. Free EDDS did not seem to be toxic at the concentrations tested. 相似文献
58.
Groundwater depth and elevation interpolation by kriging methods in Mohr Basin of Fars province in Iran 总被引:2,自引:0,他引:2
Leila Nikroo Mazda Kompani-Zare Ali Reza Sepaskhah Seyed Rashid Fallah Shamsi 《Environmental monitoring and assessment》2010,166(1-4):387-407
Prediction of groundwater depth and elevation is important in quantitative water management especially in arid areas. There are several basins in southwest of Iran, in Zagross Mountain, in which the water wells are distributed along a narrow elliptic ring band around the region. To find the most applicable interpolation method, both of the groundwater depth and elevation are predicted by different kriging methods. It is found that the groundwater elevation and depth can be predicted by different methods. Furthermore, it is found that the methods in which the trend is eliminated predicted the groundwater elevation and depth in central part of the region is with less standard error. Furthermore, the methods with no trend elimination, predicted the groundwater depths with less error near the water wells. Dividing the area to hydro-geologically homogeneous sub-areas improved the interpolation precision. 相似文献
59.
Borhan Mansouri Alireza Pourkhabbaz Hadi Babaei Ebrahim Hoshyari 《Environmental monitoring and assessment》2012,184(12):7687-7687
60.
Simultaneous determination of hydroxylamine and phenol using a nanostructure-based electrochemical sensor 总被引:1,自引:0,他引:1
Hadi Mahmoudi Moghaddam Hadi Beitollahi Somayeh Tajik Mohammad Malakootian Hassan Karimi Maleh 《Environmental monitoring and assessment》2014,186(11):7431-7441
The electrochemical oxidation of hydroxylamine on the surface of a carbon paste electrode modified with carbon nanotubes and 2,7-bis(ferrocenyl ethyl)fluoren-9-one is studied. The electrochemical response characteristics of the modified electrode toward hydroxylamine and phenol were investigated. The results showed an efficient catalytic activity of the electrode for the electro-oxidation of hydroxylamine, which leads to lowering its overpotential. The modified electrode exhibits an efficient electron-mediating behavior together with well-separated oxidation peaks for hydroxylamine and phenol. Also, the modified electrode was used for determination of hydroxylamine and phenol in some real samples. 相似文献