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371.
Veerasingam Armugam Santhi Ali Mohd Mustafa 《Environmental monitoring and assessment》2013,185(2):1541-1554
A study on the quality of water abstracted for potable use was conducted in the Selangor River basin from November 2008 to July 2009. Seven sampling sites representing the intake points of water treatment plants in the basin were selected to determine the occurrence and level of 15 organochlorine pesticides (OCPs), six phthalate esters (PAEs) and bisphenol A (BPA). Results indicated OCPs were still detected regularly in 66.1 % of the samples with the Σ15OCPs ranging from 0.6–25.2 ng/L. The first data on PAEs contamination in the basin revealed Σ6PAEs concentrations were between 39.0 and 1,096.6 ng/L with a median concentration of 186.0 ng/L while BPA concentration ranged from <1.2 to 120.0 ng/L. Although di-n-butyl phthalate was detected in all the samples, concentrations of di-ethyl(hexyl)phthalate were higher. Sampling sites located downstream recorded the highest concentrations, together with samples collected during the dry season. Comparison of the detected contaminants with the Department of Environment Water Quality Index (DOE-WQI) showed some agreement between the concentration and the current classification of stream water. While the results suggest that the sites were only slightly polluted and suitable to be used as drinking water source, its presence is cause for concern especially to the fragile firefly “Pteroptyx tener” ecosystem located further downstream. 相似文献
372.
373.
Neda Mahdavi Ali Ashraf Jamshidi Ebrahim Darvishi Abbas Moghimbeygi Rashid Heidari Moghadam 《International journal of occupational safety and ergonomics》2018,24(1):41-51
Introduction. Shoulder disorders are one of the most prevalent musculoskeletal disorders among carpet weavers. The most important cause of these disorders is muscle fatigue. The aim of the present study is to investigate the effect of carpet weaving characteristics on upper trapezius (UTr) muscle fatigue during a task cycle. Method. In this cross-sectional study, 9 women and 3 men participated. During an 80-min cycle of carpet weaving, a times-series model was applied to assess electromyography amplitude and frequency changes. Result. According to the joint analysis of electromyogram spectrum and amplitude method, the participants experienced 0% force decrease, 0.9% recovery, 18% force increase and 72% fatigue in the left UTr. Furthermore, the rates of force decrease, recovery, force increase and fatigue in the right UTr were 18%, 18%, 18% and 45%, respectively. Fatigue in the right and the left UTr was reported to be the dominant state during one carpet weaving task cycle. Conclusion. Task cycle appears to have a significant impact on UTr fatigue in participants, and UTr fatigue can be considered a serious risk factor in shoulder musculoskeletal disorders. Hence, further studies should focus on better workstations and work–rest periods during various subtasks. 相似文献
374.
Two-lane, two-way roads constitute a major portion of the rural roads in most countries of the world. This study identifies the factors influencing crash injury severity on these roads in Iran. Classification and regression trees (CART), which is one of the most common methods of data mining, was employed to analyze the traffic crash data of the main two-lane, two-way rural roads of Iran over a 3-year period (2006–2008). In the analysis procedure, the problem of three-class prediction was decomposed into a set of binary prediction models, which resulted in a higher overall accuracy of the predictions of the model. In addition, the prediction accuracy of the fatality class, which was nearly 0% in some of the previous studies, increased significantly. The results indicated that improper overtaking and not using a seatbelt are the most important factors affecting the severity of injuries. 相似文献
375.
Akhter Faheem Jamali Abdul Rauf Abbasi Mahmood Nabi Mallah Mukhtiar Ali Rao Ahsan Atta Wahocho Shafeeque Ahmed Anees-ur-Rehman Hafiz Chandio Zubair Ahmed 《Environmental science and pollution research international》2023,30(5):11226-11245
Environmental Science and Pollution Research - The hydrophobicity of silica and composite aerogels has enabled them to acquire applications in a variety of fields. With remarkable structural,... 相似文献
376.
Usman Muhammad Murtaza Behzad Natasha Natasha Imran Muhammad Abbas Ghulam Amjad Muhammad Shahid Muhammad Ibrahim Sobhy M. Owens Gary Murtaza Ghulam 《Environmental monitoring and assessment》2022,194(2):1-30
Environmental Monitoring and Assessment - Few estuaries remain unaffected by water management and altered freshwater deliveries. The Caloosahatchee River Estuary is a perfect case study for... 相似文献
377.
Anwar Muhammad Awais Madni Ghulam Rasool Yasin Iftikhar 《Environment, Development and Sustainability》2021,23(11):16454-16480
Environment, Development and Sustainability - The study probes the relationship between health expenditures, forestation, and environmental quality using panel data of 87 countries, through... 相似文献
378.
Saeed Muhammad Ahmad Aziz Boddula Rajender Inamuddin Haq Atta ul Azhar Aisha 《Environmental Chemistry Letters》2018,16(1):287-294
Environmental Chemistry Letters - Water pollution by the textile industry is a major issue. Therefore, there is a need for methods to remove organic dyes from industrial effluents. Various... 相似文献
379.
Synthesis and characterization of drinking water treatment plant sludge-incorporated Portland cement
Mohammed Dahhou Mohammed El Moussaouiti Muhammad Azeem Arshad Souad Moustahsine Mohamed Assafi 《Journal of Material Cycles and Waste Management》2018,20(2):891-901
Kinetic analysis of thermally activated phase transformations in drinking water treatment plant (DWTP) sludge suggests its applicability in the materials of construction. The suggested prediction has already been verified on the sludge-based bricks. The present study deals with incorporating the same sludge in the raw meal for the synthesis of Portland cement clinkers. For this purpose, two raw meals are prepared with varying sludge loadings. The sludge effect on reactivity of the crude mixture is evaluated on the basis of the free lime content sintered at various elevated temperatures. The results of chemical and mineralogical and scanning electron microscopic analyses reveal fine mineralogical contents of Portland clinkers calcined at 1450 and 1500 °C. Moreover, the cements prepared from these clinkers by the introduction of certain proportions of gypsum, depict significant durability. The obtained results elucidate that the studied DWTP sludge-incorporated Portland cement shows considerable potential to be commercialized. 相似文献
380.
Farooqi Zia Ur Rahman Ahmad Iftikhar Zeeshan Nukshab Ilić Predrag Imran Muhammad Saeed Muhammad Farhan 《Environmental science and pollution research international》2021,28(39):54909-54921
Environmental Science and Pollution Research - Elevated noise level is an emerging global problem. Therefore, the present work is conducted that can improve, increase, and integrate the already... 相似文献