全文获取类型
收费全文 | 1025篇 |
免费 | 10篇 |
国内免费 | 35篇 |
专业分类
安全科学 | 50篇 |
废物处理 | 84篇 |
环保管理 | 93篇 |
综合类 | 90篇 |
基础理论 | 157篇 |
环境理论 | 1篇 |
污染及防治 | 386篇 |
评价与监测 | 147篇 |
社会与环境 | 52篇 |
灾害及防治 | 10篇 |
出版年
2023年 | 27篇 |
2022年 | 131篇 |
2021年 | 101篇 |
2020年 | 39篇 |
2019年 | 44篇 |
2018年 | 58篇 |
2017年 | 66篇 |
2016年 | 61篇 |
2015年 | 26篇 |
2014年 | 40篇 |
2013年 | 126篇 |
2012年 | 48篇 |
2011年 | 60篇 |
2010年 | 42篇 |
2009年 | 28篇 |
2008年 | 26篇 |
2007年 | 27篇 |
2006年 | 21篇 |
2005年 | 11篇 |
2004年 | 17篇 |
2003年 | 9篇 |
2002年 | 8篇 |
2001年 | 7篇 |
2000年 | 8篇 |
1999年 | 5篇 |
1998年 | 1篇 |
1997年 | 2篇 |
1996年 | 1篇 |
1995年 | 5篇 |
1994年 | 6篇 |
1993年 | 1篇 |
1992年 | 3篇 |
1991年 | 1篇 |
1990年 | 1篇 |
1989年 | 1篇 |
1985年 | 3篇 |
1984年 | 1篇 |
1983年 | 1篇 |
1981年 | 1篇 |
1979年 | 1篇 |
1976年 | 1篇 |
1974年 | 1篇 |
1970年 | 1篇 |
1964年 | 1篇 |
1959年 | 1篇 |
排序方式: 共有1070条查询结果,搜索用时 15 毫秒
91.
Aourell Mauffret André Rottiers Thomas Federle David C. Gillan Miriam Hampel Julian Blasco Ali Temara 《Environment international》2009,35(6):885-892
An innovative biodegradation test system was developed in order to fill the current gap for cost effective and environmentally relevant tools to assess marine biodegradability. Glass beads were colonized by a biofilm in an open flow-through system of seawater with continuous pre-exposure to Linear Alkylbenzene Sulfonate (LAS) (20 μg/L). Thereafter, such colonized beads were added as inoculum in different test systems. [14C]-LAS (5–100 μg/L) was added and primary and ultimate biodegradation were assessed. The bacterial density collected on the beads (109 bact./mL beads) was ca. 3 orders of magnitude higher than the typical seawater content. The LAS mineralization lag phase duration decreased from 55 to < 1 days and the mineralization extent increased from 53 to 90% as the colonized beads volume increased from 10 to 275 mL. This is the first demonstration of marine bacteria's ability to mineralize LAS. On the opposite, less than 13% LAS was mineralized in seawater only. The colonized beads possibly enhanced the probability to encounter the full degraders' consortium in a low volume of seawater (100 mL). 相似文献
92.
The cement industry is one of the largest carbon dioxide (CO2) emitters in the Thai industry. The cement sector accounted for about 20,633 kilotonnes (ktonnes) CO2 emissions in 2005 in Thailand. A bottom-up CO2 abatement cost curve (ACC) is constructed in this study for the Thai cement industry to determine the potentials and costs of CO2 abatement, taking into account the costs and CO2 abatement of different technologies. The period of 2010–2025 is chosen as the scenario period. We analyzed 41 CO2 abatement technologies and measures for the cement industry. Using the bottom-up CO2 ACC model, the cost-effective annual CO2 abatement potential for the Thai cement industry during the 15 year scenario period (2010–2025) is equal to 3095 ktonnes CO2/year. This is about 15% of the Thai cement industry’s total CO2 emissions in 2005. The total technical annual CO2 abatement potential is 3143 ktonnes CO2/year, which is about 15.2% of the Thai cement industry’s total CO2 emissions in 2005. We also conducted a sensitivity analysis for the discount rate parameter. 相似文献
93.
Amini Hassan Haghighat Gholam Ali Yunesian Masud Nabizadeh Ramin Mahvi Amir Hossein Dehghani Mohammad Hadi Davani Rahim Aminian Abd-Rasool Shamsipour Mansour Hassanzadeh Naser Faramarzi Hossein Mesdaghinia Alireza 《Environmental geochemistry and health》2016,38(1):25-37
Environmental Geochemistry and Health - There is discrepancy about intervals of fluoride monitoring in groundwater resources by Iranian authorities. Spatial and temporal variability of fluoride in... 相似文献
94.
Ayrilmis Nadir Yurttaş Elif Durmus Ali Özdemir Ferhat Nagarajan Rajini Kalimuthu Mayandi Kuzman Manja Kitek 《Journal of Polymers and the Environment》2021,29(8):2409-2420
Journal of Polymers and the Environment - The technological, thermal, and antimicrobial properties of biocomposite films produced from polylactic acid (PLA) and thermally treated wood flour with in... 相似文献
95.
Mortazavi-Derazkola Sobhan Yousefinia Ali Naghizadeh Ali Lashkari Sajad Hosseinzadeh Mostafa 《Journal of Polymers and the Environment》2021,29(11):3539-3547
Journal of Polymers and the Environment - Nowadays, many chemical methods have been proposed for the synthesis of silver nanoparticles, but green synthesis has received more attention due to its... 相似文献
96.
Erkinay Ozdemir Merve Ali Zaara Subeshan Balakrishnan Asmatulu Eylem 《Journal of Material Cycles and Waste Management》2021,23(3):855-871
Journal of Material Cycles and Waste Management - Waste generation has been increasing drastically based on the world’s population and economic growth. This has significantly affected human... 相似文献
97.
Irshad Samina Liu Guijian Yousaf Balal Ali Muhammad Ubaid Ahmed Rafay Rehman Abdul Rashid Muhammad Saqib Mahfooz Yusra 《Environmental geochemistry and health》2021,43(10):4329-4343
Environmental Geochemistry and Health - The contamination of soil by toxic metal(oid)s has emerged as a major concern worldwide, particularly in developing countries. A metals behavior in the soil... 相似文献
98.
99.
Effluents collected from tanneries in Sialkot showed considerably higher levels of heavy metals. Sodium (12 660.91 mg/L) among macronutrients and Cr (592.20 mg/L) among heavy metals were found in the highest concentrations. Effluent parameters, i.e. biological oxygen demand (BOD; 12.40), chemical oxygen demand (COD; 16.53), Cd (5.90), Cr (592.20) and Fe (18.59) were the respective times higher than Pakistan National Environmental Quality Standards and their continuous unchecked discharge into agricultural soils poses a potential risk. Mean concentrations (mg/L) of Cr (592.20), Ni (2.66), Mn (1.16), Fe (37.17), Zn (0.90), Cd (0.59) and Pb (1.18) in this study exceeded levels recorded to date from different tanning hubs in Pakistan. Factor analysis/principal components analysis (FA/PCA) for the effluent parameters resulted in six varimax factors, i.e. VF1 (salinity, electrical conductivity, total dissolved solids, chloride, phosphate, BOD and COD; including characteristic tannery effluent features), VF2 (pH, Cr and alkalinity; tanning operations), VF3 (Cd and Pb; dyeing processes), VF4 (Mn and Fe; finishing operations), VF5 (Ni; retaining processes) and VF6 (hardness, Ca and Cu; bating processes). Cluster analysis performed on metal data resulted in three clusters confirming metal–metal relations obtained either from FA/PCA or a correlation matrix. The results of this study are useful for heavy metal source apportionment, assessment of risk to peripheral soils and the future management of environments around tanneries. 相似文献
100.
The following areas are discussed in this paper: immobilisation of bacterial consortium in sol-gel; methyl parathion degradation and bioremediation applications; evaluation of indigenous bacterial isolates of contaminated soils. Bacterial strains were isolated from agricultural areas of Pakistan which were contaminated with methyl parathion. A bacterial consortium of seven (out of 64) Enterobacteriaceae isolates including Citrobacter, Enterobacter and Proteus vulgaris capable of degrading methyl parathion (enzyme activity ranging 410–675 mU mL?1 for individual isolates and 982 mU/mL for consortium) was selected and subsequently immobilised in tetraethyl orthosilicate (TEOS) and sodium-silicate-based sol-gel matrices. Cell viability of suspended and immobilised bacterial consortium was monitored using a minimal salt medium supplemented with methyl parathion. The results indicate that sol-gel immobilisation can be helpful to increase the shelf life of methyl parathion degrading bacterial strains along with preservation of biological activity for bioremediation applications in field. 相似文献