全文获取类型
收费全文 | 253篇 |
免费 | 6篇 |
国内免费 | 9篇 |
专业分类
安全科学 | 19篇 |
废物处理 | 28篇 |
环保管理 | 20篇 |
综合类 | 34篇 |
基础理论 | 30篇 |
污染及防治 | 93篇 |
评价与监测 | 29篇 |
社会与环境 | 13篇 |
灾害及防治 | 2篇 |
出版年
2023年 | 4篇 |
2022年 | 33篇 |
2021年 | 18篇 |
2020年 | 15篇 |
2019年 | 6篇 |
2018年 | 7篇 |
2017年 | 10篇 |
2016年 | 10篇 |
2015年 | 7篇 |
2014年 | 16篇 |
2013年 | 33篇 |
2012年 | 9篇 |
2011年 | 15篇 |
2010年 | 9篇 |
2009年 | 4篇 |
2008年 | 11篇 |
2007年 | 14篇 |
2006年 | 11篇 |
2005年 | 3篇 |
2004年 | 4篇 |
2003年 | 8篇 |
2002年 | 6篇 |
2000年 | 1篇 |
1999年 | 2篇 |
1997年 | 1篇 |
1996年 | 1篇 |
1995年 | 1篇 |
1994年 | 1篇 |
1991年 | 1篇 |
1990年 | 1篇 |
1988年 | 2篇 |
1984年 | 1篇 |
1982年 | 1篇 |
1978年 | 1篇 |
1963年 | 1篇 |
排序方式: 共有268条查询结果,搜索用时 531 毫秒
181.
Over the past decades, uncontrolled population growth and rapid urbanization and industrialization have resulted in environmental problems in Corlu Town, Turkey. One of the most important problems is solid waste due to inadequate management practices. Nowadays, increasing public awareness of the environment compels local authorities to define and to adopt new solutions for waste management. This paper presents a general overview of current solid waste management practices in Corlu Town and principles of the recommended municipal solid waste (MSW) management system. In Corlu, 170 tonnes of municipal solid waste are generated each day, or 1.150 kg per capita per day. Approximately one-half of the municipal solid waste generated is organic material and 30% of the MSW consists of recyclable materials. The recommended system deals with maximizing recycling and minimizing landfilling of municipal solid waste, and consists of separation at source, collection, sorting, recycling, composting and sanitary landfilling. This study also analyzed the recommended system with respect to feasibility and economics. To evaluate whether the suggested system is cost effective or not, the operating cost of the recommended system and market prices of recyclable materials were compared, and the results show that the recommended system will reduce required landfill volume up to 27% of compared to the present situation. The profit of the recommended system is estimated to be about 80 million US dollars. 相似文献
182.
Ibrahim Ahmed H. Lyu Xianjun Atia Bahig M. Gado Mohamed A. ElDeeb Amr B. 《Journal of Material Cycles and Waste Management》2023,25(1):86-102
Journal of Material Cycles and Waste Management - Boiler ash, produced by burning heavy fuel oil (HFO) in electrical power plants, is one of the most serious environmental problems facing oil-rich... 相似文献
183.
Z. Nahrul Hayawin H. P. S. Abdul Khalil M. Jawaid M. Hakimi Ibrahim A. A. Astimar 《The Environmentalist》2010,30(3):273-278
The aim of this work was to study the physical and chemical properties of different oil palm wastes, viz. empty fruit bunch
(EFB), oil palm frond (OPF) and oil palm trunk (OPT). A study (84 days duration) was conducted to evaluate the efficiency
of an exotic earthworm species (epigeic-African Nightcrawler (Eudrilus euginae)) for the decomposition of different types of oil palm wastes (EFB, OPT and OPF) into valuable vermicompost. The decrease
in earthworm’s biomass gain for EFB, OPT and OPF may be due to exhaustion of worm feed in vermicomposters. The percentage
of nitrogen, phosphorous and potassium in vermicompost was found to increase while pH and total organic carbon declined as
a function of the vermicomposting period. The vermicompost obtained showed an increase in heavy metal content for all the
reactors, but levels were still in the range of nutrient in the vermicompost. The data reveal that vermicomposting (using
African Nightcrawler) is a suitable technology for the decomposition of oil palm wastes, especially EFB into value-added material. 相似文献
184.
185.
The use of accumulated waste materials in third world countries is still in its early phases. It will take courage for contractors and others in the construction industry to recycle selected types of waste materials in the concrete mixes. This paper addresses the recycling of rubber tires accumulated every year in Jordan to be used in concrete mixes. The main objectives of this research were to provide more scientific evidence to support the use of legislation or incentive-based schemes to promote the reuse of accumulated waste tires. This research focused on using crumb tires as a replacement for a percentage of the local fine aggregates used in the concrete mixes in Jordan. Different concrete specimens were prepared and tested in terms of uniaxial compression and splitting tension. The main variable in the mixture was the volumetric percentage of crumb tires used in the mix. The test results showed that even though the compressive strength is reduced when using the crumb tires, it can meet the strength requirements of light weight concrete. In addition, test results and observations indicated that the addition of crumb rubber to the mix has a limited effect toward reducing the workability of the mixtures. The mechanical test results demonstrated that the tested specimens of the crumb rubber concrete remained relatively intact after failure compared to the conventional concrete specimens. It is also concluded that modified concrete would contribute to the disposal of the non-decaying scrap tires, since the amount being accumulated in third world countries is creating a challenge for proper disposal. Thus, obliging authorities to invest in facilitating the use of waste tires in concrete, a fundamental material to the booming construction industry in theses countries, serves two purposes. 相似文献
186.
Ibrahim Yakubu 《The Environmentalist》2008,28(4):376-378
In order to prevent ‘an impending neem failure’, from the incidence of the twin problems of the neem scale insect infestations
and neem dieback, six authenticated provenances (Allahabad, Karnataka, Jodphur, Madinipur, Mukkambu and Annur), from the natural
range of the species in India, were collected and appraised for survival in a degraded land in Kano, Nigeria. Established
in a completely randomised block design with four replications, the trial was conducted with a view to restrengthening and/or
replacing the already weakened Local Land Race of the species in the study area. There was a statistically significant difference
in the survival of the seven provenances. The established differences are between Allahabad 83% (6.40 SEM), Mukkambu 83% (6.40 SEM),
Annur 76% (4.90 SEM), Jodphur 63% (15.09 SEM) and Madinipur 56% (6.73 SEM), on the one hand, and Karnataka 17% (1.91SEM) and
the Local Land Race, with 13% (0.13 SEM), on the other hand. The research recommends Allahabad and Mukkambu 83% (6.40 SEM)
based on this outstanding performance. 相似文献
187.
Hassan Iftekhar Husain Fohad Mabood Khan Rais Ahmad Ebaid Hossam Al-Tamimi Jameel Alhazza Ibrahim M. Aman Shazia Ibrahim Khalid Elfaki 《Environmental science and pollution research international》2019,26(10):9966-9980
Environmental Science and Pollution Research - Potassium bromate (PB) is a commonly used food additive, a prominent water disinfection by-product, and a class IIB carcinogen. It exerts a various... 相似文献
188.
Multivariate analysis for source identification of pollution in sediment of Linggi River,Malaysia 总被引:1,自引:0,他引:1
Md Suhaimi Elias Shariff Ibrahim Kamarudin Samuding Shamsiah Ab Rahman Yii Mei Wo Jeremy Andy Dominic Daung 《Environmental monitoring and assessment》2018,190(4):257
Rapid socioeconomic development in the Linggi River Basin has contributed to the significant increase of pollution discharge into the Linggi River and its adjacent coastal areas. The toxic element contents and distributions in the sediment samples collected along the Linggi River were determined using neutron activation analysis (NAA) and inductively coupled plasma-mass spectrometry (ICP-MS) techniques. The measured mean concentration of As, Cd, Pb, Sb, U, Th and Zn is relatively higher compared to the continental crust value of the respective element. Most of the elements (As, Cr, Fe, Pb, Sb and Zn) exceeded the freshwater sediment quality guideline-threshold effect concentration (FSQG-TEC) value. Downstream stations of the Linggi River showed that As concentrations in sediment exceeded the freshwater sediment quality guideline-probable effect concentration (FSQG-PEC) value. This indicates that the concentration of As will give an adverse effect to the growth of sediment-dwelling organisms. Generally, the Linggi River sediment can be categorised as unpolluted to strongly polluted and unpolluted to strongly to extremely polluted. The correlation matrix of metal-metal relationship, principle component analysis (PCA) and cluster analysis (CA) indicates that the pollution sources of Cu, Ni, Zn, Cd and Pb in sediments of the Linggi River originated from the industry of electronics and electroplating. Elements of As, Cr, Sb and Fe mainly originated from motor-vehicle workshops and metal work, whilst U and Th originated from natural processes such as terrestrial runoff and land erosion. 相似文献
189.
This study aims to analyse the heavy metal pollutants in Jeddah, the second largest city in the Gulf Cooperation Council with a population exceeding 3.5 million, and many vehicles. Ninety-eight street dust samples were collected seasonally from the six major roads as well as the Jeddah Beach, and subsequently digested using modified Leeds Public Analyst method. The heavy metals (Fe, Zn, Mn, Cu, Cd, and Pb) were extracted from the ash using methyl isobutyl ketone as solvent extraction and eventually analysed by atomic absorption spectroscopy. Multivariate statistical techniques, principal component analysis (PCA), and hierarchical cluster analysis were applied to these data. Heavy metal concentrations were ranked according to the following descending order: Fe > Zn > Mn > Cu > Pb > Cd. In order to study the pollution and health risk from these heavy metals as well as estimating their effect on the environment, pollution indices, integrated pollution index, enrichment factor, daily dose average, hazard quotient, and hazard index were all analysed. The PCA showed high levels of Zn, Fe, and Cd in Al Kurnish road, while these elements were consistently detected on King Abdulaziz and Al Madina roads. The study indicates that high levels of Zn and Pb pollution were recorded for major roads in Jeddah. Six out of seven roads had high pollution indices. This study is the first step towards further investigations into current health problems in Jeddah, such as anaemia and asthma. 相似文献
190.
Abdel-Daim Mohamed M. Abushouk Abdelrahman Ibrahim Bungău Simona G. Bin-Jumah May El-kott Attalla F. Shati Ali A. Aleya Lotfi Alkahtani Saad 《Environmental science and pollution research international》2020,27(10):10228-10235
Environmental Science and Pollution Research - Malathion is a potent organophosphate insecticide that inhibits acetylcholinesterase (AChE) enzyme. Our experimental objective was to investigate the... 相似文献