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171.
Usman Muhammad Kousar Rakhshanda Yaseen Muhammad Rizwan Makhdum Muhammad Sohail Amjad 《Environmental science and pollution research international》2020,27(31):38995-39018
Environmental Science and Pollution Research - This study investigates the causal connection between economic growth, foreign direct investment, primary and renewable energy utilization, trade... 相似文献
172.
Raza Ali Khan Muhammad Tariq Iqbal Ali Qamar Hussain Tanveer Narjis Saadia 《Environmental science and pollution research international》2021,28(30):40378-40393
Environmental Science and Pollution Research - This study was designed to investigate the impact of meteorological indicators (temperature, rainfall, and humidity) on total COVID-19 cases in... 相似文献
173.
Weimin Zhu Chishti Muhammad Zubair Rehman Abdul Ahmad Manzoor 《Environment, Development and Sustainability》2022,24(4):4786-4809
Environment, Development and Sustainability - The prior empirical research focuses on examining only the procyclical impact of innovation on carbon emissions (CO2e), in the majority of cases, for... 相似文献
174.
Assuming that settling takes place in two zones (a constant rate zone and a variable rate zone), a model using four parameters accounting for the nature of the water-suspension system has been proposed for describing batch sedimentation processes. The sludge volume index (SVI) has been expressed in terms of these parameters. Some disadvantages of the SVI application as a design parameter have been pointed out, and it has been shown that a relationship between zone settling velocity and sludge concentration is more consistent for describing the settling behavior and for design of settling tanks. The permissible overflow rate has been related to the technological parameters of secondary settling tank by simple working equations. The graphical representations of these equations could be used to optimize the design and operation of secondary settling tanks. 相似文献
175.
Arsenic and other toxic elemental contamination of groundwater, surface water and soil in Bangladesh and its possible effects on human health 总被引:2,自引:0,他引:2
Md. Riajul Islam Reijo Salminen Pertti W. Lahermo 《Environmental geochemistry and health》2000,22(1):33-53
The problems of contamination caused by arsenic (As) and other toxic metals in groundwater, surface water and soils in the Bengal basin of Bangladesh have been studied. Altogether 10 groundwater, seven surface water and 31 soil samples were collected from arsenic-affected areas and analysed chemically. The geologic and anthropogenic sources of As and other toxic metals are discussed in this paper. The chemical results show that the mean As concentrations in groundwater in the Char Ruppur (0.253mg As L–1), Rajarampur (1.955mg As L–1) and Shamta areas (0.996mg As L–1) greatly exceed the WHO recommended value, which is 0.01mg As L–1. The concentrations of As in groundwater are very high compared to those in surface water and in surface soil in the three (As-affected) areas studied. This indicates that the source of As in groundwater could be bedrock. The relatively high concentrations of Cr, Cu, Ni, Pb and Zn in surface water, compared to world typical value, are due to the solubility of metal ions, organometalic complexes, coprecipitation or co-existance with the colloidal clay fraction. In the soil, the elevated concentrations of As, Cr, Cu, Ni, Pb and Zn are due to their strong affinity to organic matter, hydrous oxides of Fe and Mn, and clay minerals. 相似文献
176.
Energy policies and environmental security: A multi-criteria analysis of energy policies of Pakistan
Mabroor Hassan Manzoor Khan Afridi Muhammad Irfan Khan 《International Journal of Green Energy》2019,16(7):510-519
Access to affordable and efficient energy is a basic human right and an imperative for human development. The energy policies usually ponder technical, economic, environmental, and social aspects for successful procurement of energy and endowment of energy resources. The objectives of this paper are to analyze energy policies in Pakistan and assess their relationship with environmental security and development. An empirical and multi-criteria decision analysis was used to unfold the strong interactions of energy security with development and environment. The energy policies in Pakistan are more equipped with economic and technical aspects, fairly framed with social aspects and poorly pampered with environmental facets. The dearth of environmental aspects will not only results in environmental degradation but also lag the development and achievement of Sustainable Development Goals. 相似文献
177.
Afsheen Zehr Zulfiqar Ali Sahito Wenbin Tong Lin Tang Yasir Hami Muhammad Bilal Khan Zarina Ali Beena Naqvi Xiaoe Yang 《环境科学学报(英文版)》2020,32(1):24-38
Phytoremediation is a valuable technology for mitigating soil contamination in agricultural lands, but phytoremediation without economic revenue is unfeasible for land owners and farmers. The use of crops with high biomass and bioenergy for phytoremediation is a unique strategy to derive supplementary benefits along with remediation activities. Sunflower (Helianthus annuus L.) is a high-biomass crop that can be used for the phytoremediation of polluted lands with additional advantages (biomass and oil). In this study, 40 germplasms of sunflower were screened in field conditions for phytoremediation with the possibility for oil and meal production. The study was carried out to the physiological maturity stage. All studied germplasms mopped up substantial concentrations of Pb, with maximum amounts in shoot?>?root?>?seed respectively. The phytoextraction efficiency of the germplasm was assessed in terms of the Transfer factor (TF), Metal removal efficiency (MRE) and Metal extraction ratio (MER). Among all assessed criteria, GP.8585 was found to be most appropriate for restoring moderately Pb-contaminated soil accompanied with providing high biomass and high yield production. The Pb content in the oil of GP.8585 was below the Food safety standard of China, with 59.5% oleic acid and 32.1% linoleic acid. Moreover, amino acid analysis in meal illustrated significant differences among essential and non-essential amino acids. Glutamic acid was found in the highest percentage (22.4%), whereas cysteine in the lowest percentage (1.3%). Therefore, its efficient phytoextraction ability and good quality edible oil and meal production makes GP.8585 the most convenient sunflower germplasm for phytoremediation of moderately Pb-contaminated soil, with fringe benefits to farmers and landowners. 相似文献
178.
179.
Mohammed Aiman Saleh A. Naveed Muhammad Jost Norbert 《Journal of Polymers and the Environment》2021,29(8):2359-2371
Journal of Polymers and the Environment - Polysaccharides are essential macromolecules which almost exist in all living forms, and have important biological functions, they are getting more... 相似文献
180.