全文获取类型
收费全文 | 240篇 |
免费 | 2篇 |
国内免费 | 8篇 |
专业分类
安全科学 | 7篇 |
废物处理 | 13篇 |
环保管理 | 25篇 |
综合类 | 31篇 |
基础理论 | 31篇 |
环境理论 | 1篇 |
污染及防治 | 89篇 |
评价与监测 | 28篇 |
社会与环境 | 24篇 |
灾害及防治 | 1篇 |
出版年
2023年 | 4篇 |
2022年 | 30篇 |
2021年 | 15篇 |
2020年 | 3篇 |
2019年 | 11篇 |
2018年 | 10篇 |
2017年 | 16篇 |
2016年 | 12篇 |
2015年 | 5篇 |
2014年 | 10篇 |
2013年 | 26篇 |
2012年 | 9篇 |
2011年 | 13篇 |
2010年 | 7篇 |
2009年 | 16篇 |
2008年 | 6篇 |
2007年 | 8篇 |
2006年 | 1篇 |
2005年 | 10篇 |
2004年 | 8篇 |
2003年 | 4篇 |
2002年 | 1篇 |
2001年 | 2篇 |
2000年 | 2篇 |
1999年 | 3篇 |
1998年 | 3篇 |
1997年 | 1篇 |
1996年 | 1篇 |
1994年 | 2篇 |
1992年 | 1篇 |
1991年 | 1篇 |
1988年 | 1篇 |
1973年 | 1篇 |
1962年 | 1篇 |
1961年 | 1篇 |
1959年 | 2篇 |
1957年 | 1篇 |
1954年 | 1篇 |
1953年 | 1篇 |
排序方式: 共有250条查询结果,搜索用时 31 毫秒
101.
Nonequilibrium sorption of phenols onto geosorbents: the impact of pH on intraparticle mass transfer 总被引:1,自引:0,他引:1
While the pH effect on sorption equilibrium of weak acids on natural sorbents was investigated in a number of studies, less is known about the pH dependence of sorption kinetics. This paper investigates the impact of pH on sorption kinetics during the transport of some selected phenols through a sandy aquifer material. Breakthrough curves measured in column experiments were analyzed using a mass transfer based nonequilibrium model designated as dispersed flow, film and particle diffusion model (DF-FPDM). In this model, the rate limiting intraparticle diffusion is characterized by the mass transfer coefficient, kSaV, which can be determined from breakthrough curves by curve fitting. The experimental results indicate that the kSaV is pH-dependent and inversely correlated with the pH-dependent distribution coefficient, K(d,app). Regression equations are presented that may be used to estimate approximate values of intraparticle mass transfer coefficients on the basis of experimentally determined or LFER predicted distribution coefficients. 相似文献
102.
103.
S. M. Sayedur Rahman Abdullahil Azeem 《International Journal of Sustainable Engineering》2017,10(2):99-104
Solid waste disposal poses a significant problem, as it leads to land pollution if openly dumped, water pollution if dumped in low lands and air pollution if burnt. Moreover, the scarcity of land and increase in land prices especially in Dhaka, the capital city of Bangladesh create the problems of developing new landfill sites. Realising the existing and future impacts of waste disposal issues, the analytic hierarchy process model was applied to select an appropriate Waste-to-Energy (WTE) conversion technology for household waste of Dhaka-Mirpur Cantonment area. Three alternatives, namely, anaerobic digestion, pyrolysis and plasma gasification (PG) technologies and nine criteria under three aspects (technological, environmental and financial) were chosen for comparison. The analysis revealed that PG is the most appropriate WTE conversion technology in the study area. The selected PG technology has a relatively small footprint; it can treat unsorted waste and can produce good-quality synthetic gas without generating extremely toxic by-products. 相似文献
104.
Bushra Nishat S.M. Mahbubur Rahman 《Journal of the American Water Resources Association》2009,45(6):1313-1327
Nishat, Bushra and S.M. Mahbubur Rahman, 2009. Water Resources Modeling of the Ganges‐Brahmaputra‐Meghna River Basins Using Satellite Remote Sensing Data. Journal of the American Water Resources Association (JAWRA) 45(6):1313‐1327. Abstract: Large‐scale water resources modeling can provide useful insights on future water availability scenarios for downstream nations in anticipation of proposed upstream water resources projects in large international river basins (IRBs). However, model set up can be challenging due to the large amounts of data requirement on both static states (soils, vegetation, topography, drainage network, etc.) and dynamic variables (rainfall, streamflow, soil moisture, evapotranspiration, etc.) over the basin from multiple nations and data collection agencies. Under such circumstances, satellite remote sensing provides a more pragmatic and convenient alternative because of the vantage of space and easy availability from a single data platform. In this paper, we demonstrate a modeling effort to set up a water resources management model, MIKE BASIN, over the Ganges, Brahmaputra, and Meghna (GBM) river basins. The model is set up with the objective of providing Bangladesh, the lowermost riparian nation in the GBM basins, a framework for assessing proposed water diversion scenarios in the upstream transboundary regions of India and deriving quantitative impacts on water availability. Using an array of satellite remote sensing data on topography, vegetation, and rainfall from the transboundary regions, we demonstrate that it is possible to calibrate MIKE BASIN to a satisfactory level and predict streamflow in the Ganges and Brahmaputra rivers at the entry points of Bangladesh at relevant scales of water resources management. Simulated runoff for the Ganges and Brahmaputra rivers follow the trends in the rated discharge for the calibration period. However, monthly flow volume differs from the actual rated flow by (?) 8% to (+) 20% in the Ganges basin, by (?) 15 to (+) 12% in the Brahmaputra basin, and by (?) 15 to (+) 19% in the Meghna basin. Our large‐scale modeling initiative is generic enough for other downstream nations in IRBs to adopt for their own modeling needs. 相似文献
105.
Kheng Soo Tay Noorsaadah Abd. Rahman Mhd. Radzi Bin Abas 《Environmental science and pollution research international》2013,20(5):3115-3121
This study investigated the degradation pathway of metoprolol, a widely used β-blocker, in the ozonation via the identification of generated ozonation by-products (OPs). Structure elucidation of OPs was performed using HPLC coupled with quadrupole time-of-flight high-resolution mass spectrometry. Seven OPs were identified, and four of these have not been reported elsewhere. Identified OPs of metoprolol included aromatic ring breakdown by-products; aliphatic chain degraded by-products and aromatic ring mono-, di-, and tetrahydroxylated derivatives. Based on the detected OPs, metoprolol could be degraded through aromatic ring opening reaction via reaction with ozone (O3) and degradation of aliphatic chain and aromatic ring via reaction with hydroxyl radical (?OH). 相似文献
106.
Nested numerical scheme in a polar coordinate shallow water model for the coast of Bangladesh 总被引:1,自引:0,他引:1
This study is concerned with the development of storm surge model to predict water level accurately due to surge associated with a cyclone along the coast of Bangladesh. Considering the funnel shape of the Bay of Bengal, coastal bending and the existence of off-shore islands, a vertically integrated model in cylindrical polar coordinate system is developed using nested numerical scheme. A fine mesh scheme capable of incorporating coastal bending and offshore islands properly in the numerical scheme is nested into a coarse mesh scheme covering up to 15° N latitude of the Bay of Bengal. The developed model is used to estimate water levels at different coastal and island stations associated with a few storms that hit the coast of Bangladesh. The computed surge levels compared well with observed ones and predicted surge levels investigated with different approaches. 相似文献
107.
Zaki Alam Pushan Ehsanur Rahman Nafisa Islam Nirupam Aich 《Frontiers of Environmental Science & Engineering》2022,16(10):128
108.
Rahman Md. Ashekur Hossain Md. Yeamin Hossain Mostafa A. R. Ahmed Zoarder Faruque Jaman Ahmed Ohtomi Jun 《Environmental science and pollution research international》2022,29(55):83273-83290
Environmental Science and Pollution Research - Prawns are regarded as delicious food items and a source of income as it is the salient exportable fishery item of Bangladesh and a number of other... 相似文献
109.
Mohammed J.K. Bashir Mohamed Hasnain Isa Shamsul Rahman Mohamed Kutty Zarizi Bin Awang Hamidi Abdul Aziz Soraya Mohajeri Izharul Haq Farooqi 《Waste management (New York, N.Y.)》2009,29(9):2534-2541
This study investigated the electrochemical oxidation of stabilized leachate from Pulau Burung semi-aerobic sanitary landfill by conducting laboratory experiments with sodium sulfate Na2SO4 (as electrolyte) and graphite carbon electrodes. The control parameters were influent COD, current density and reaction time, while the responses were BOD removal, COD removal, BOD:COD ratio, color and pH. Na2SO4 concentration was 1 g/L. Experiments were conducted based on a three-level factorial design and response surface methodology (RSM) was used to analyze the results. The optimum conditions were obtained as 1414 mg/L influent COD concentration, 79.9 mA/cm2 current density and 4 h reaction time. This resulted in 70% BOD removal, 68% COD removal, 84% color removal, 0.04 BOD/COD ratio and 9.1 pH. Electrochemical treatment using graphite carbon electrode was found to be effective in BOD, COD and color removal but was not effective in increasing the BOD/COD ratio or enhancing biodegradability of the leachate. The color intensity of the treated samples increased at low influent COD and high current density due to corrosion of electrode material. 相似文献
110.