全文获取类型
收费全文 | 1616篇 |
免费 | 17篇 |
国内免费 | 40篇 |
专业分类
安全科学 | 22篇 |
废物处理 | 108篇 |
环保管理 | 154篇 |
综合类 | 139篇 |
基础理论 | 291篇 |
环境理论 | 2篇 |
污染及防治 | 549篇 |
评价与监测 | 298篇 |
社会与环境 | 106篇 |
灾害及防治 | 4篇 |
出版年
2023年 | 59篇 |
2022年 | 174篇 |
2021年 | 114篇 |
2020年 | 26篇 |
2019年 | 46篇 |
2018年 | 82篇 |
2017年 | 89篇 |
2016年 | 108篇 |
2015年 | 44篇 |
2014年 | 78篇 |
2013年 | 175篇 |
2012年 | 75篇 |
2011年 | 92篇 |
2010年 | 68篇 |
2009年 | 58篇 |
2008年 | 71篇 |
2007年 | 55篇 |
2006年 | 62篇 |
2005年 | 34篇 |
2004年 | 23篇 |
2003年 | 20篇 |
2002年 | 28篇 |
2001年 | 8篇 |
2000年 | 7篇 |
1999年 | 5篇 |
1998年 | 3篇 |
1997年 | 2篇 |
1996年 | 6篇 |
1995年 | 2篇 |
1994年 | 4篇 |
1993年 | 3篇 |
1992年 | 3篇 |
1989年 | 2篇 |
1988年 | 3篇 |
1985年 | 2篇 |
1984年 | 2篇 |
1983年 | 4篇 |
1982年 | 5篇 |
1979年 | 2篇 |
1969年 | 1篇 |
1966年 | 1篇 |
1965年 | 2篇 |
1964年 | 2篇 |
1962年 | 2篇 |
1961年 | 4篇 |
1958年 | 3篇 |
1957年 | 3篇 |
1956年 | 2篇 |
1955年 | 4篇 |
1953年 | 1篇 |
排序方式: 共有1673条查询结果,搜索用时 942 毫秒
811.
Rajendran Devi Sri Chidambaram Ashok Kumar Ponnusamy Senthil Venkataraman Swethaa Muthusamy Shanmugaprakash Vo Dai-Viet Nguyen Rangasamy Gayathri Vaithyanathan Vasanth Kumar Vaidyanathan Vinoth Kumar 《Environmental Chemistry Letters》2023,21(2):911-934
Environmental Chemistry Letters - Modern biomass and organic waste are becoming major, carbon-neutral sources of fine chemicals, biomolecules and fuels to replace fossil fuel products. As a... 相似文献
812.
Gautam Aparna Khajone Vijay B. Bhagat Pundlik R. Kumar Sushil Patle Dipesh S. 《Environmental Chemistry Letters》2023,21(6):3105-3126
Environmental Chemistry Letters - Diminishing petroleum reserves, increasing carbon emissions, and the growing demand for fuels are calling for alternative fuels. Global diesel consumption... 相似文献
813.
Shrivastava JN Satsangi GP Kumar A 《Journal of environmental biology / Academy of Environmental Biology, India》2008,29(1):125-126
Prevalence of keratinophilic fungi was observed in paddy field soil during different stages of cultivation viz., transplanting, tillering, milking and maturation. Out of total 76 soil samples, 65 soil samples were found to be positive for the keratinophilic fungi. Fourteen species belonging to a single genus Chrysosporium were isolated through out the cropping season. C. keratinophilum (17.1%) followed by C. tropicum (13.15%) were found to be the most dominating geophilic species. The highest percent distribution of keratinophilic fungi appeared during the milking stage (100%) of paddy cultivation, followed by the maturation stage (89.47%). 相似文献
814.
Banu JR Yeom IT Esakkiraj S Kumar N Logakanthi S 《Journal of environmental biology / Academy of Environmental Biology, India》2008,29(2):143-146
Sago, the tapioca starch is manufactured by over 800 small-scale units located in the Salem district, Tamil Nadu, India. During the processing of sago it generates huge quantities of biodegradable solid waste, as crushed tubers. In present study an attempt was made to convert these biodegradable solid sago tubers into value added compost using an exotic earthworm, Eudrilus eugeniae. The experiments were carried out in a plastic tray at various concentrations of sago-sludge (50% 75% and 100%) for a period of 90 days. During the vermicomposting, data were collected on life form (cocoon, non clitellates, clitellates) of earthworm and it was found to be high in 50% followed by 75% and 100% concentrations. Chemical analysis of worked substrates showed a step wise increase of nitrogen and phosphorus. The fold increase of phosphorus and nitrogen were found to be high for sago-sludge undergoing vermicomposting than the control. During the composting period the organic carbon decreased from its initial value of 58, 76 and 107 mg/kg to 21, 24 and 65 mg/kg for 50, 70 and 100%, respectively The microbial analysis showed that after 75 days of composting, their population stabilized and further increase in composting period did not increase their population size. The results indicate that 50% and 75% concentration of sludge mixed with bedding material was ideal for the vermicomposting. 相似文献
815.
People are exposed to ionizing radiation from the radionuclides that are present in different types of natural sources, of
which phosphate fertilizer is one of the most important sources. Radionuclides in phosphate fertilizer belonging to 232Th and 238U series as well as radioisotope of potassium (40K) are the major contributors of outdoor terrestrial natural radiation. The study of alpha activity in fertilizers, which
is the first ever in West Bengal, has been performed in order to determine the effect of the use of phosphate fertilizers
on human health. The data have been compared with the alpha activity of different types of chemical fertilizers. The measurement
of alpha activity in surface soil samples collected from the cultivated land was also performed. The sampling sites were randomly
selected in the cultivated land in the Midnapore district, which is the largest district in West Bengal. The phosphate fertilizer
is widely used for large agricultural production, mainly potatoes. The alpha activities have been measured using solid-state
nuclear track detectors (SSNTD), a very sensitive detector for alpha particles. The results show that alpha activity of those
fertilizer and soil samples varies from 141 Bq/kg to 2,589 Bq/kg and from 109 Bq/kg to 660 Bq/kg, respectively. These results
were used to estimate environmental radiation exposure on human health contributed by the direct application of fertilizers. 相似文献
816.
Mansuri Abdulkhalik Chaudhari Ramesh Nasra Simran Meghani Nikita Ranjan Shivendu Kumar Ashutosh 《Environmental science and pollution research international》2023,30(10):24907-24918
Environmental Science and Pollution Research - Antimicrobials of natural origin are proving to be an effective solution to emerging antimicrobial resistance and its physiological side effects.... 相似文献
817.
Kumar Anuj Ingle Anjali Shende Diwakar Z. Wasewar Kailas L. 《Environmental science and pollution research international》2023,30(10):24890-24898
Environmental Science and Pollution Research - Levulinic acid is a carboxylic acid present in industrial downstream. It is an important chemical and can be transformed into various important... 相似文献
818.
Kumar Sarangi Prakash Subudhi Sanjukta Bhatia Latika Saha Koel Mudgil Divya Prasad Shadangi Krushna Srivastava Rajesh K. Pattnaik Bhabjit Arya Raj Kumar 《Environmental science and pollution research international》2023,30(4):8526-8539
Environmental Science and Pollution Research - The major global concern on energy is focused on conventional fossil resources. The burning of fossil fuels is an origin of greenhouse gas emissions... 相似文献
819.
Pal Sudip Kumar Masum Md. Mehedi Hassan Salauddin Md. Hossen Md. Arif Ruva Israt Jahan Akhie Afsana Alam 《Environmental science and pollution research international》2023,30(13):36112-36126
Environmental Science and Pollution Research - Urban stormwater runoff is considered as one of the major contributors to nonpoint source that contributes to the pollution of all water resources in... 相似文献
820.
Jyoti Bisht N.S.K. Harsh Lok Man S. Palni Vasudha Agnihotri Anuj Kumar 《补救:环境净化治理成本、技术与工艺杂志》2019,29(3):63-77
The present study was designed to screen 20 fungi for their potential to degrade the chlorinated organic pesticides endosulfan and chlorpyrifos. Fungi were first screened for their tolerance to various concentrations of target pesticides using soil extract agar and subsequent degradation studies were performed in soil extract broth containing 25 mg/L of the individual pesticide. Pesticide degradation was evaluated using gas chromatography. Other parameters, such as pH and mycelial weight, were also determined. Based on percent growth inhibition of test fungi and subsequent analysis of EC50 values, the overall results revealed that chlorpyrifos showed significantly more growth inhibition in all tested fungi compared with endosulfan. Trametes hirsuta showed complete degradation of both α‐ and β‐endosulfan isomers and Cladosporium cladosporioides displayed maximum degradation of chlorpyrifos. All test fungi degraded endosulfan more efficiently than chlorpyrifos, except Phanerochaete chrysosporium, Trichoderma harzianum, and Trichoderma virens which showed higher degradation of chlorpyrifos than endosulfan. It was also found that all tested fungi degraded α‐endosulfan more efficiently than β‐endosulfan. Endosulfan sulfate was found to be the major degradation product with all tested fungi. Fungi which showed more endosulfan degradation also produced more endosulfan sulfate. However, less endosulfan sulfate was detected with T. hirsuta and Trametes versicolor, although they degraded endosulfan more efficiently. 相似文献