全文获取类型
收费全文 | 138篇 |
免费 | 1篇 |
国内免费 | 9篇 |
专业分类
废物处理 | 19篇 |
环保管理 | 7篇 |
综合类 | 15篇 |
基础理论 | 18篇 |
污染及防治 | 54篇 |
评价与监测 | 22篇 |
社会与环境 | 10篇 |
灾害及防治 | 3篇 |
出版年
2023年 | 4篇 |
2022年 | 13篇 |
2021年 | 16篇 |
2020年 | 3篇 |
2019年 | 2篇 |
2018年 | 5篇 |
2017年 | 6篇 |
2016年 | 7篇 |
2015年 | 5篇 |
2014年 | 5篇 |
2013年 | 23篇 |
2012年 | 9篇 |
2011年 | 13篇 |
2010年 | 6篇 |
2009年 | 7篇 |
2008年 | 5篇 |
2007年 | 4篇 |
2006年 | 1篇 |
2004年 | 1篇 |
2003年 | 1篇 |
2002年 | 3篇 |
2001年 | 4篇 |
2000年 | 1篇 |
1992年 | 1篇 |
1991年 | 1篇 |
1989年 | 1篇 |
1987年 | 1篇 |
排序方式: 共有148条查询结果,搜索用时 15 毫秒
71.
For generations, cyclones and tidal surges have frequently devastated lives and property in coastal and island Bangladesh. This study explores vulnerability to cyclone hazards using first‐hand coping recollections from prior to, during and after these events. Qualitative field data suggest that, beyond extreme cyclone forces, localised vulnerability is defined in terms of response processes, infrastructure, socially uneven exposure, settlement development patterns, and livelihoods. Prior to cyclones, religious activities increase and people try to save food and valuable possessions. Those in dispersed settlements who fail to reach cyclone shelters take refuge in thatched‐roof houses and big‐branch trees. However, women and children are affected more despite the modification of traditional hierarchies during cyclone periods. Instinctive survival strategies and intra‐community cooperation improve coping post cyclone. This study recommends that disaster reduction programmes encourage cyclone mitigation while being aware of localised realities, endogenous risk analyses, and coping and adaptation of affected communities (as active survivors rather than helpless victims). 相似文献
72.
Md. Rezaul Karim Habibur Rahman Bejoy Khan Amimul Ahsan Md. Rahadujjaman Shadman Alam Rakibul Hasan Tabriz Tajwar Sharif Saad Farooq 《环境质量管理》2023,32(4):53-63
Potable and equitable drinking water (DW) is a fundamental human right and essential for human health. This study is conducted to assess the groundwater and jar water quality of the roadside restaurants and tea stalls used for drinking by the local people around the Gazipur City area in Bangladesh. Water samples from 173 restaurants and tea stalls are collected. The physico-chemical and biological parameters are analyzed according to the guidelines and standards. The results illustrate that the color, EC, and Mn of 41%, 80%, and 62% of the samples, respectively, exceed the WHO and Environmental Conservation Rules (ECR) standards. In addition, E. coli and total coliform exceeding the threshold standards are found in 47% and 64% of the water samples, respectively. The contamination of DW by fecal coliforms is confirmed and supported by prior studies, which indicates that the DW supplied in restaurants and tea stalls are unsafe because of the possible presence of pathogens. These may cause potential health hazards to consumers from various water-borne diseases. Poor sanitation, unhygienic practices, and improper disposal of wastewater are responsible for the microbial contamination of DW. So, the authorities in charge of these places should take the right regulatory steps, such as regular sanitation inspections, DW quality monitoring, hand-washing practices, and better sanitation in these places. 相似文献
73.
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
74.
Paudyal Hari Inoue Katsutoshi Kawakita Hidetaka Ohto Keisuke Kamata Hirofumi Alam Shafiq 《Journal of Material Cycles and Waste Management》2018,20(2):975-984
Journal of Material Cycles and Waste Management - Spent strongly acidic cation exchange resin was effectively used for the removal of trace concentration of fluoride ions. For this purpose, the... 相似文献
75.
Meraj Alam Khan Ayaz Mahmood Dar Mohd Arsalan 《Journal of Polymers and the Environment》2017,25(3):717-727
A series of organic–inorganic conducting nano polymer-matrix composite cation-exchanger have been synthesized via sol–gel method and characterized through FTIR, XRD, TGA-DTA, SEM, and TEM studies. The structural studies confirm the semi-crystalline nature of the material but the morphology of the exchanger gets changed after incorporation of inorganic moiety. The particle size of the nano-composite was found to be 19.2 nm. The observed band gap for the different samples was found to be in the range of 3.70–4.61 eV which shows that nano-composite material covers semiconducting range but the resistivity of samples is highly dependent on the percentage of inorganic part in the composite. Further the oxidative degradation of the polymer backbone begins after the removal of trapped water successively followed by dopant and low molecular weight oligomers. During the antimicrobial screening, the nano-composite was found to be active against different strains of bacteria and fungi. Gel electrophoresis and molecular docking studies were carried out to check the interaction and mechanism of inhibition of microbial growth, respectively by studying the effect of the nano-composite with DNA-Topoisomerase-1. 相似文献
76.
Polycyclic aromatic hydrocarbons (PAHs) are ubiquitous environmental pollutants entering into the environment through natural and anthropogenic activities. Owing to their toxicity to various life forms including humans, detoxification of PAHs is crucial to reduce their effects on cells. In this study, we have isolated two bacteria capable of degrading two common PAHs, anthracene and phenanthrene, from contaminated soil samples by using selective enrichment culture supplemented with test PAHs as the sole source of carbon and energy. The isolated bacteria were identified and affiliated as Pseudomonas aeruginosa strain KD and Stenotrophomonas maltophilia strain RC based on their 16s rRNA gene sequences. The degradation of anthracene and phenanthrene was estimated indirectly by measuring the decolourisation extent of a redox indicator, 2, 6-dichlorophenolindophenol, incorporated into PAH-supplemented mineral salt media. In the case of anthracene, ≥90% decolourisation was recorded at 20 and 48 days for P. aeruginosa and S. Maltophilia, respectively. On the other hand, ≥94% decolourisation was recorded at 56 and 52 days for P. aeruginosa and S. maltophilia, respectively during the utilisation of phenanthrene. 相似文献
77.
78.
The present study has been carried out to assess groundwater quality in parts of Hindon–Yamuna interfluve region of western
Uttar Pradesh. Fifty-five groundwater samples were collected from hand pumps in post-monsoon 2005 and pre-monsoon 2006 period,
respectively, covering an area of about 1,345 km2. Physical and chemical parameters of groundwater such as electrical conductivity, pH, total dissolved solid, Na, K, Ca, Mg,
HCO3, Cl, and SO4 were determined. Concentration of the chemical constituents in groundwater of the study area varies spatially and temporarily.
Interpretation of analytical data of major ion chemistry helps to identify three chemical types of groundwater i.e. ‘mixed’,
‘mixed bicarbonate’ and ‘alkali bicarbonate’ types. The species likely to occur in groundwater of the study area are Ca-HCO3, Mg-HCO3, Ca-SO4, Na-Cl, Na-SO4, Na-HCO3, K-Cl, and some other possible species of K, depending on its abundance. The groundwater of the study area comes under the
category of moderately hard to very hard, mildly acidic to slightly alkaline in nature. There is anomalously high concentration
of major ions, particularly, Na, K, SO4, and Cl. High SO4 and K values may be related to anthropogenic influences, rather than through some natural process. Sodium along with Cl may
be added to the system through sewage pollution and leachate percolation. 相似文献
79.
The resourceful employment of vegetable oil based polymers in coating applications that yield novel properties, faces challenges usually in their processing. We have developed polyesteramide coatings from linseed (Linnum ussitatissium seeds) oil with improved coating properties. Linseed oil was first converted into N, N-bis 2-hydroxy ethyl linseed oil fatty amide diol (HELA). The resin was synthesized by the reaction of HELA with ethylenediaminetetraacetic acid (EDTA) to develop ethylenediamine polyesteramide (Ed-PEA). The latter was further treated with poly (styrene co-maleic anhydride) (SMA) in different (35–50) phr (part per hundred part of resin) to obtain ambient cured polyesteramide (AC-PEA). The structural elucidation of polymeric resin (AC-PEA) was carried out by FT-IR, 1H-NMR, and 13C-NMR spectroscopic techniques. Thermal behavior of AC-PEA was studied by thermogravimetric analyses (TGA) and differential scanning calorimetry (DSC). The coatings of AC-PEA were prepared on mild steel strips to investigate their physico-mechanical and anticorrosive behavior (in acid, alkali, water and xylene). It was found that among all the samples, the one having 45 phr of SMA showed the best physico-mechanical and corrosion resistance performance. The thermal stability performance suggests that AC-PEA45 system could be safely used up to 150 °C. 相似文献
80.
Md. Abul Kalam Azad Md. Nozrul Islam Ashraful Alam Hasan Mahmud M. A. Islam M. Rezaul Karim Matiar Rahman 《The Environmentalist》2009,29(4):436-440
A pot-culture experiment was conducted in open-field conditions with highly cultivated locally transplanted (T) aman rice
(Oryza sativa L.) named BR-22 in arsenic (As)-amended soil (0, 1.0, 5.0, 10.0, 20.0, 30.0, 40.0 and 50.0 mg kg−1 As) of Bangladesh to see the effect of As on the growth, yield and metal uptake of rice. Arsenic was applied to soil in the
form of sodium arsenate (Na2HAsO4). Arsenic affected the plant height, tiller and panicle numbers, grain and straw yield of T-aman rice significantly (P ≤ 0.05). The grain As uptake of T-aman rice was found to increase with increase of As in soil and a high grain As uptake
was observed in the treatments of 30–50 mg kg−1 As-containing soil. These levels exceed the food hygiene concentration limit of 1.0 mg kg−1 As. However, the straw As uptake varied significantly (P ≤ 0.05) from a low concentration of As in soil (5 mg kg−1) and the highest uptake was noticed in 20 mg kg−1 As treatment. 相似文献