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排序方式: 共有118条查询结果,搜索用时 31 毫秒
11.
Food and Environmental Virology - Saffold virus as a newly discovered virus, which seems to be related to acute gastroenteritis as with other enteric viruses and to human airway diseases in... 相似文献
12.
Mortazavi-Derazkola Sobhan Yousefinia Ali Naghizadeh Ali Lashkari Sajad Hosseinzadeh Mostafa 《Journal of Polymers and the Environment》2021,29(11):3539-3547
Journal of Polymers and the Environment - Nowadays, many chemical methods have been proposed for the synthesis of silver nanoparticles, but green synthesis has received more attention due to its... 相似文献
13.
Mojtaba Kamalinia Gebreal Nasl Saraji Dohyung Kee Mostafa Hosseini Alireza Choobineh 《International journal of occupational safety and ergonomics》2013,19(2):311-319
Background. Changes in industries and work practices have coincided with work-related musculoskeletal disorders (MSDs). This study was conducted to determine the prevalence of MSDs and to assess postural loading in assembly workers of an Iranian telecommunication manufacturing company. Methods. Data were collected from 193 randomly selected workers in 4 units of the company. The Nordic musculoskeletal disorders questionnaire and the UBC ergonomic checklist were used as data collection tools. Loading on the upper body assessment (LUBA) was used to assess postural loading. Results. Lower back symptoms were the most prevalent problems among the workers (67.9%). LUBA showed that most assembly workers (94.3%) had experienced considerable and high postural loading (postural load index, PLI > 5). Regression analyses revealed that lighting, rotation, contact stress, repetition, gender and age were factors associated with symptoms. Conclusion. Work-related MSDs occurred at a high rate among workers. Postural loading requires consideration. Any ergonomic intervention should focus on eliminating ergonomic factors associated with symptoms. 相似文献
14.
Farideh Golbabaei Monireh Khadem Asghar Ghahri Mohammad Babai Mostafa Hosseini Mirghani SeyedSomea 《International journal of occupational safety and ergonomics》2013,19(4):647-655
This study evaluated the influence of welding on pulmonary functions in welders. Spirometry tests were performed before and after work shift in 91 welders and 25 clerks (control group). We examined forced vital capacity (FVC), forced expiratory volume in 1 s (FEV1), FEV1/FVC ratio and forced expiratory flow 25%-75% (FEF 25–75). Significant differences were found for FVC and FEV1/FVC between welders and the control group in pre- and post-shift measurements (p < .001). In welders, smoking and nonsmoking habit had no significant effects on any pulmonary indices before or after shift. Work experience and fume concentrations also had no significant effects on the majority of spirometric indices (p > .05). Most welders had at least 1 of the respiratory symptoms. Significant differences were found between pre- and post-shift indices (as percentage of predicted values calculated with spirometer) and between the welders engaged in some welding tasks and the control group before work shift. This study documented work-related changes in pulmonary functions in the welders and marked drops in these functions without symptoms in some welders. 相似文献
15.
Mostafa Sahar A. Ahmed Nashaat Almeshal Ibrahim Tayeh Bassam A. Elgamal Mohamed S. 《Environmental science and pollution research international》2022,29(50):75380-75401
Environmental Science and Pollution Research - This research aimed to investigate the effect of nanorice husk ash (NRHA) prepared using different thermal treatment methods on ultra-high-performance... 相似文献
16.
Bazzazpour Shahriyar Rahmatinia Masoumeh Mohebbi Seyed Reza Hadei Mostafa Shahsavani Abbas Hopke Philip K. Houshmand Behzad Raeisi Alireza Jafari Ahmad Jonidi Yarahmadi Maryam Farhadi Mohsen Hasanzadeh Vajihe Kermani Majid Vaziri Mohmmad Hossien Tanhaei Mohammad Zali Mohammad Reza Alipour Mohammad Reza 《Environmental science and pollution research international》2022,29(57):85586-85594
Environmental Science and Pollution Research - In the indoor environment of dental clinics, dental personnel and patients are exposed to a risk of infection because of the transmission of... 相似文献
17.
Kabbash Ibrahim Ali El-Sallamy Rania Mostafa Abdo Sanaa Abd El-Fatah Atalla Asmaa Omar 《Environmental science and pollution research international》2020,27(30):37565-37571
Environmental Science and Pollution Research - To identify level of job satisfaction among physicians at secondary and tertiary care levels. Random sample of 450 secondary and 523 tertiary care... 相似文献
18.
El-Din Eman Ahmed Alaa Mostafa Heba El-Sayed Samak Mai A. Mohamed Eman M. El-Shafei Dalia Abdallah 《Environmental science and pollution research international》2019,26(21):21556-21564
Environmental Science and Pollution Research - The evaluation of the toxicological effects of titanium dioxide nanoparticles (TiO2NPs) is increasingly important due to their growing occupational... 相似文献
19.
Mostafa Yusefi Mohammad Khalid Faizah Md Yasin Luqman Chuah Abdullah Mohammad Reza Ketabchi Rashmi Walvekar 《Journal of Polymers and the Environment》2018,26(2):474-486
In this work, performance of cow dung (CD) reinforced poly(lactic acid) (PLA) biocomposites was investigated for the potential use in load bearing application. CD of average 4 mm size was blended with PLA at different CD ratios (0–50 wt%) and their effects on the biocomposite properties were studied. The results showed an improvement in the flexural properties, while the tensile and impact strength dropped by 20 and 28% with the addition of 50% CD. The decline in the tensile and impact strength was due to micro-cracking and voids formation at higher CD content. Also, the incorporation of CD slightly decreased the thermal stability of the biocomposite. However, dynamic mechanical properties of the biocomposites generally improved. SEM analysis of tensile and impact fractured surfaces indicated that the CD had a reasonable adhesion with matrix. Moreover, the SEM micrographs of soil burial studies showed an accelerated degradation of higher CD wt% biocomposites. 相似文献
20.
M.H. Mostafa E.A. El‐Bassiouni S.M. El‐Sewedy S.M. El‐Zoghby M. Ramadan G.A. Abdel‐Tawab 《Journal of environmental science and health. Part. B》2013,48(3):393-399
Abstract The effects of some xenobiotics on the activity of the B6‐dependent kynurenine hydrolase (KH) and kynurenine aminotransferase (KATE) in mouse liver, were investigated. Polychlorinated biphenyl (Aroclor 1254) (400mg/kg/day ×4) markedly decreased the activity of both enzymes. Benzo(a)pyrene (BP) and 3‐methylcholanthrene (3‐MC) (40mg/Kg/day ×1) as well as phénobarbital (PB) (75mg/kg/day ×3) did not alter the activity of KH, while that of KATE was mildy reduced. The response of the two enzymes to treatment with chlorpromazine (CPZ) (5mg/Kg/day ×5) were opposite with marked elevation of KH and inhibition of KATE activities. Treatment with B‐naphthoflavone (B‐NF) (80mg/Kg/day ×2), Pyrazole (200mg/Kg/day ×1) or indole (400mg/kg/day ×1) produce no change in the activity of either enzyme. It, seems therefore, that Aroclor(1254) and chlorpromazine may cause disordered kynurenine metabolism through alterations in the activities of its metabolizing enzymes. This, in turn, might affect nicotinamide adenine dinucleotide biosynthesis and/or the accumulation of some tryptophan metabolites suspected of being carcinogenic or co‐carcinogenic. 相似文献