全文获取类型
收费全文 | 55篇 |
免费 | 2篇 |
国内免费 | 2篇 |
专业分类
安全科学 | 3篇 |
废物处理 | 4篇 |
环保管理 | 6篇 |
综合类 | 4篇 |
基础理论 | 5篇 |
污染及防治 | 25篇 |
评价与监测 | 5篇 |
社会与环境 | 6篇 |
灾害及防治 | 1篇 |
出版年
2023年 | 3篇 |
2022年 | 10篇 |
2021年 | 4篇 |
2020年 | 2篇 |
2019年 | 3篇 |
2018年 | 1篇 |
2017年 | 2篇 |
2016年 | 2篇 |
2015年 | 4篇 |
2014年 | 2篇 |
2013年 | 5篇 |
2012年 | 3篇 |
2011年 | 8篇 |
2008年 | 1篇 |
2006年 | 2篇 |
2005年 | 1篇 |
2003年 | 1篇 |
2002年 | 1篇 |
1997年 | 1篇 |
1992年 | 1篇 |
1991年 | 1篇 |
1989年 | 1篇 |
排序方式: 共有59条查询结果,搜索用时 15 毫秒
1.
Alamgir Hossain Jamal Naser Monzur Alam Imteaz 《Environmental Modeling and Assessment》2011,16(4):359-367
This paper presents comprehensive 3D numerical investigations on depositions of particles flowing through a horizontal pipe
loop consisting of four bends. The multiphase mixture model available in FLUENT 6.2 was used in this study. In this numerical
simulation, five different particle sizes have been used as secondary phases to calculate real multiphase effect in which
inter-particle interaction has been considered. The deposition of particles along the periphery of the pipe wall was investigated
as a function of particle size and fluid velocity. The simulations showed that near the upstream of the bends, maximum particle
concentration occurred at the bottom of the pipe. However, downstream the bends, the maximum particle concentration occurred
at an angle of 60° from the bottom. The larger particles clearly showed deposition near the bottom wall except downstream.
As expected, the smaller particles showed less tendency of deposition and lesser at higher velocity. This numerical investigation
showed qualitative agreement with the experiments conducted by Commonwealth Scientific and Industrial Research Organisation,
Melbourne team for similar conditions. 相似文献
2.
Huibo Wang Awan Rehmat Ullah Qayyum Abdul Munir Arshad Khan Jamal Gulzar Fatima 《Environmental science and pollution research international》2022,29(10):14355-14370
Environmental Science and Pollution Research - The construction of green finance index is a three-tiered process that involves macroeconomic, ecological, and monetary indicators. Therefore, this... 相似文献
3.
This study examines the Granger causality relationships between economic growth, energy consumption and emissions, from 1980 to 2007 in Bahrain, controlling for capital and urban population using Toda and Yamamoto’s approach. It was found that there is unilateral causality which runs from urban population, economic growth, capital and energy consumption to environment. Further, we found strong support for causality running from economic growth to energy consumption, emissions and capital. The existence of these linkages suggests that the government of Bahrain may pursue energy efficiency strategies and carbon emissions reduction policy in the long run without impeding economic growth. Additionally, the long run pursuit of high economic growth given sustained increases in energy efficiency may also reduce CO2 emissions intensity per unit of her GDP. 相似文献
4.
Elavarasan Rajvikram Madurai Pugazhendhi Rishi Shafiullah G. M. Kumar Nallapaneni Manoj Arif Mohammad Taufiqul Jamal Taskin Chopra Shauhrat Singh Dyduch Joanna 《Environmental science and pollution research international》2022,29(23):33957-33987
Environmental Science and Pollution Research - In the pursuit of constructing a sustainable world for all through the instrumental seventeen Sustainable Development Goals, the COVID-19 pandemic... 相似文献
5.
A 2D analytical turbulent diffusion model for particle dispersion and deposition at different heights along the pipe flow
and circumferential deposition has been developed. This liquid–solid turbulent diffusion model presented in this paper has
emanated from an existing gas–liquid turbulent diffusion model. This model can be used as a handy tool for quick estimation
one and two-dimensional deposition fluxes of particles in water distribution networks. A comprehensive 3D numerical investigation
has been carried out using multiphase mixture model available in “Fluent 6.2” to verify the above analytical model. Different
particles sizes and densities were used for 3D numerical investigations. The deposition was studied as a function of particle
diameter, density, and fluid velocity. The deposition of particles, along the periphery of the pipe wall and at different
depths, was investigated. Both the models findings matched with qualitative phenomena such as deposition of heavier particles
at the bottom of the pipe wall were higher at lower velocities and lower at higher velocities. The lighter particles were
found mostly suspended with homogeneous distribution. Smaller particles were also suspended with marginal higher concentration
near the bottom of the pipe wall. This marginal higher concentration of the smaller particles was found to be slightly pronounced
for lower velocity. These analogies of particles are well discussed with the ratio between free-flight velocity and the gravitational
settling velocity. Extended analytical model results were compared with the 3D computational fluid dynamics simulation results.
Discrepancies in the model results were discussed. 相似文献
6.
In Malaysia, most municipal wastes currently are disposed into poorly managed 'controlled tipping' systems with little or no pollution protection measures. This study was undertaken to assist the relevant governmental bodies and service providers to identify an improved waste disposal management strategy. The study applied the choice experiment technique to estimate the nonmarket values for a number of waste disposal technologies. Implicit prices for environmental attributes such as psychological fear, land use, air pollution, and river water quality were estimated. Compensating surplus estimates incorporating distance from the residences of the respondents to the proposed disposal facility were calculated for a number of generic and technology-specific choice sets. The resulting estimates were higher for technology-specific options, and the distance factor was a significant determinant in setting an equitable solid waste management fee. 相似文献
7.
Spatial distribution of polybrominated diphenyl ethers in coastal marine sediments receiving industrial and municipal effluents in Kuwait 总被引:6,自引:0,他引:6
Polybrominated diphenyl ether (PBDE) concentrations were measured in surficial sediments from coastal sediments receiving industrial and municipal effluents in Kuwait. The summation PBDE concentrations varied by two orders of magnitude ranging from 80 to 3800 pg g(-1)dw. The congener distribution was dominated by BDE 183, with minor contributions from BDEs 154 and 153. The similarity between the congener profile to that of the technical octa formulation (Bromkal 79-8DE) suggests a source of this product in Kuwait. The observed gradient in concentration distribution, with high summation PBDE concentrations near the shore and an exponential decrease seaward, indicates that wastewater discharge from industrial activities in the study area is the primary source of these compounds in the sediments. 相似文献
8.
Fuzil Nurul Syazana Othman Nur Hidayati Jamal Nur Ain Shazwani Roslee Ab. Mustapa Ana Najwa Alias Nur Hashimah Dollah ‘Aqilah Him Nik Raikhan Nik Marpani Fauziah 《Journal of Polymers and the Environment》2022,30(2):597-612
Journal of Polymers and the Environment - In this study, the potential of graphene oxide-alginate beads (GO-AB) as an adsorbent for bisphenol A (BPA) removal from aqueous solution was investigated.... 相似文献
9.
House dust as a source of human exposure to polybrominated diphenyl ethers in Kuwait 总被引:7,自引:0,他引:7
Gevao B Al-Bahloul M Al-Ghadban AN Al-Omair A Ali L Zafar J Helaleh M 《Chemosphere》2006,64(4):603-608
This study reports concentrations of polybrominated diphenyl ethers (PBDEs) in dust samples collected from 17 homes in Kuwait. PBDEs were measured in all homes investigated with mean summation operatorPBDEs concentration ranging from 1 to 393 ng g(-1), with a geometric mean of 76 ng g(-1). The dominant congener in all samples was BDE 209 constituting ca. 85% of the summationPBDEs followed by BDE 99 (5%), BDE 47 (4.5%), and BDE 183 (2%). The congener mixture in dust is dominated by those in deca and penta formulations. Using the measured concentrations and estimates of dust ingestion rates for children and adults, estimated human non-dietary exposure based on mean PBDE levels were 14.8 and 1.5 ng day(-1) for children and adults, respectively. The 10-fold difference in exposure estimates between children and adults in this study supports previous reports that children are at greater risk from pollutants that accumulate indoors. The ubiquitous distribution of these chemicals as noted in this study highlights the fact that we are continuously exposed to low doses of chemicals in the indoor environment. 相似文献
10.
This paper presents an in-depth analysis of a multi-stakeholder process, the Banff Bow Valley Round Table (BBVRT) convened by a federally appointed task force in 1995 to provide public input and participation in the Banff Bow Valley Study (BBVS). The purpose of this initiative was to address environmental concerns and conflict over governance, development and growth in Banff National Park, Canada. A key finding from the analysis discussed in this paper is how various participants struggled for legitimation at the negotiation table, and how the discourses of science and instrumental reason served to empower certain interests and agendas in the process. While the discursive appropriation of ecological science enabled some interests to dominate and to legitimize their concerns, this strategy may have intangible and costly consequences for consensus-based processes and for society overall. Analysis of these discursive struggles demonstrates the challenge of bringing ecology and the general public to the same negotiating table in a meaningful way. It shows the conflicting roles and identities of environmental groups who aspire to re-present nature (as a stakeholder) at the negotiating table. Recommendations for multi-stakeholder processes in planning and governance of national parks are presented, along with social implications in the context of historic human-environment dualism and conflict. 相似文献