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排序方式: 共有139条查询结果,搜索用时 484 毫秒
81.
Environmental Fluid Mechanics - For many environmental projects and plans, it is necessary to model pollutant transport in rivers. Pollutant transport modeling is a complex phenomenon with multiple... 相似文献
82.
83.
Shafiey Dehaj Mohammad Ahmadi Mehdi Zamani Mohiabadi Mostafa 《Environmental science and pollution research international》2021,28(5):5316-5331
Environmental Science and Pollution Research - This research was designed to experimentally study the influence of using three metal oxide nanofluids at different high flow rates with various mass... 相似文献
84.
Mehdi Ghasemi Jebrail Nasleseraji Sedigheh Hoseinabadi Mohsen Zare 《International journal of occupational safety and ergonomics》2013,19(2):203-209
Introduction. Studying human errors as a risk factor in the occurrence of accidents is necessary. Thus, the aim of this study was to identify, predict and control human errors in industrial control units. Method. This is a case study carried out using SHERPA in the first unit of Zagros Methanol of Asalooyeh, Iran, and its subunits. To collect the required data, various methods were used: observing, interviewing processing specialists and control unit operators, and studying technical documents and records. Results. In total, 222 human errors were identified in various occupational tasks. This study showed that 48.62% of them were action errors, 31.97% were checking errors, 6.75% were retrieval errors, 11.70% were communication errors and 0.90% were selection errors. Conclusion. It can be inferred that this method is appropriate for different industries, and it is useful for identifying human errors leading to hazardous accidents. 相似文献
85.
Mehdi Ghasemkhani Hossain Jabbari 《International journal of occupational safety and ergonomics》2013,19(4):455-462
Self-report measures of musculoskeletal discomfort are a widely used and generally accepted risk factor for musculoskeletal disorders in epidemiologic research. The aim of this study was to investigate the prevalence of musculoskeletal symptoms in packing workers. A cross-sectional study of 75 workers was carried out using a modified Nordic questionnaire. Prevalence was determined with the percentage of positive responses to questions on musculoskeletal symptoms. Odds ratios and 95% confidence intervals were the measures of association between prevalent musculoskeletal symptoms and demographic factors; they were determined with logistic regression. Most musculoskeletal symptoms in workers were from the low back (44.0%), shoulders (33.3%) and neck (32.0%). Years worked were strongly significantly associated with musculoskeletal symptoms and pain in the neck, shoulders and wrists/hands, P< .001-.050. Hazards related to repetitive movements and discomfort postures could be reduced with stretching exercises, rotation schedules and through new engineering solutions. 相似文献
86.
Mehdi Bidabadi Saeedreza Zadsirjan Seyed Alireza Mostafavi 《Journal of Loss Prevention in the Process Industries》2013,26(4):862-868
This study investigates the impact of radiation heat transfer and heat conduction on dust cloud combustion. Radiation plays a very important role in the stability of dust cloud flame, and increasing the amount of radiation drastically raises the possibility of instability and explosion in a dust cloud mixture. Flame speed, which is a function of mixture characteristics, can exhibit a fluctuating behavior. By using the discrete heat source method, it would be possible to study the transient propagation of dust flames. Thus, the propagation speed of flame can be obtained, and as time goes by, the transient speed of dust flame will reach its steady state value. By considering the radiation effect, better agreement is observed between the obtained results and experimental data. 相似文献
87.
Sepand Mohammad-Reza Aliomrani Mehdi Hasani-Nourian Yazdan Khalhori Mohammad-Reza Farzaei Mohammad-Hosein Sanadgol Nima 《Environmental science and pollution research international》2020,27(30):37488-37501
Environmental Science and Pollution Research - Necroptosis is a regulated cell death that is governed by mixed lineage kinase domain-like, receptor-interacting serine-threonine kinase 3 and... 相似文献
88.
Masoumeh Mohammadi Fereidoun Azizi Mehdi Hedayati 《Environmental geochemistry and health》2018,40(1):87-97
Iodine deficiency is a global public health issue because iodine plays a major role in the thyroid hormone synthesis and is essential for normal neurological development. This review summarizes the publications on iodine status in the WHO Eastern Mediterranean Region (EMR) countries. All related studies available in main national and international databases were systematically searched using some specific keywords to find article published between 1909 and 2015. The prevention of iodine deficiency disorders (IDDs) in the WHO EMR countries is currently under control without significant side effects. Mild to severe IDDs exist in some countries of the Middle East, due to lack of effective iodine supplementation program, but the Islamic Republic of Iran, Jordan, Bahrain and Tunisia have achieved the goal of universal salt iodization. Overall, despite enormous efforts to control IDDs, still IDD remains a serious public health problem in some countries of the region, requiring urgent control and prevention measures. 相似文献
89.
Laure Mamy Pauline Vrignaud Nathalie Cheviron François Perreau Mehdi Belkacem Agathe Brault Sébastien Breuil Ghislaine Delarue Jean-Pierre Pétraud Isabelle Touton Christian Mougin Véronique Chaplain 《Environmental Chemistry Letters》2011,9(1):145-150
Soil is damaged by several threats and, among them, chemical contamination by pesticides and compaction. However, the effect of compaction on the fate of pesticides in soil, and the impact of pesticides on soil biological functioning are unknown. Therefore, we studied the effect of soil compaction on the degradation of the herbicide isoproturon, and the impact of this herbicide on an enzyme activity (β-glucosidase) involved in the C soil cycle. Undisturbed soil samples were prepared at different bulk densities, treated with isoproturon then incubated at 18°C in darkness for 63 days. The results showed that soil compaction did not modify significantly the degradation of isoproturon, neither the formation rates nor the nature of its metabolites. Moreover, compaction did not modify the impact of isoproturon on β-glucosidase activity. To our knowledge, these are the first results concerning the interactions between soil compaction and the degradation and impact of a pesticide. 相似文献
90.
Can Muhlis Ben Jebli Mehdi Brusselaers Jan 《Environmental science and pollution research international》2022,29(29):44091-44102
Environmental Science and Pollution Research - Environmental degradation is one of the main drivers of climate change. One of the most broadly accepted tools to minimize environmental degradation... 相似文献