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- 저자 : Marzieh Mohammadi (검색결과 4 건)
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Effects of Constrained Groove Pressing (CGP) on the plane stress fracture toughness of pure copper
Mohammadi, Bijan,Tavoli, Marzieh,Djavanroodi, Faramarz Techno-Press 2014 Structural Engineering and Mechanics, An Int'l Jou Vol.52 No.5
Among severe plastic deformation methods, groove pressing is one of the prominent techniques for producing ultra-fine grained sheet materials. This process consists of imposing repetitive severe plastic deformation on the plate or sheet metals through alternate pressing. In the current study, a 2 mm pure Cu sheet has been subjected to repetitive shear deformation up to two passes. Hardness and tensile yield and ultimate stress were obtained after groove pressing. Fracture toughness tests have been performed and compared for three conditions of sheet material namely as received (initial annealed state), after one and two passes of groove pressing. Results of experiments indicate that a decrease in the values of fracture toughness attains as the number of constrained groove pressing (CGP) passes increase.
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Effects of Constrained Groove Pressing (CGP) on the plane stress fracture toughness of pure copper
Bijan Mohammadi,Marzieh Tavoli,Faramarz Djavanroodi 국제구조공학회 2014 Structural Engineering and Mechanics, An Int'l Jou Vol.52 No.5
Among severe plastic deformation methods, groove pressing is one of the prominent techniques for producing ultra-fine grained sheet materials. This process consists of imposing repetitive severe plastic deformation on the plate or sheet metals through alternate pressing. In the current study, a 2 mm pure Cu sheet has been subjected to repetitive shear deformation up to two passes. Hardness and tensile yield and ultimate stress were obtained after groove pressing. Fracture toughness tests have been performed and compared for three conditions of sheet material namely as received (initial annealed state), after one and two passes of groove pressing. Results of experiments indicate that a decrease in the values of fracture toughness attains as the number of constrained groove pressing (CGP) passes increase.
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Sevil Hakimi,Elham Aminian,Marzieh Mohammadi,Sakineh Mohammad Alizadeh,Parvin Bastani,Sousan Houshmandi 대한폐경학회 2020 대한폐경학회지 Vol.26 No.1
Objectives: Urinary incontinence (UI) and anal incontinence (AI) cause concern, social exclusion, and ultimately reduced quality of life in women. The aim of present study was to assess the prevalence and related risk factors of UI, AI, and pelvic organ prolapse (POP). Methods: The present study recruited 340 menopausal women living in Tabriz in northwest Iran. The data collection tools included the Pelvic Floor Distress Inventory-20 and a personal and social information questionnaire. POP was diagnosed via clinical examination using the simplified pelvic organ prolapse quantification system. Results: The prevalence of UI and POP was approximately 50%, and approximately 16% of participants reported AI. Based on the odds ratios, the most remarkable risk factor of urinary stress incontinence was the number of vaginal deliveries, whereas that of urinary urge incontinence was obesity. Episiotomy and age were the most major risk factors of AI and POP, respectively. Conclusions: The results of the present study showed that the prevalence of POP, UI, and AI is remarkably high among postmenopausal women, warranting the need to prioritize the assessment of POP and various incontinences in middle-aged women in the primary health care system. Furthermore, increased emphasis should be put on modifiable risk factors.
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Social determinants of adherence to COVID-19 preventive guidelines: a comprehensive review
Zahra Jorjoran Shushtari,Yahya Salimi,Sina Ahmadi,Nader Rajabi-Gilan,Marzieh Shirazikhah,Akbar Biglarian,Ali Almasi,Mohammad Ali Mohammadi Gharehghani 질병관리본부 2021 Osong Public Health and Research Persptectives Vol.12 No.6
Adherence to coronavirus disease 2019 (COVID-19) preventive guidelines (ACPG) is an important strategy to control the COVID-19 pandemic effectively. The present study aimed to identify and summarize the social determinants of ACPG among the general population. A comprehensive review was performed from December 2019 to February 2021 through searching electronic databases. Two independent reviewers assessed and selected relevant studies. Next, the characteristics and main findings of the included studies were summarized. Finally, the World Health Organization’s conceptual framework of social determinants of health was used to synthesize the identified social determinants of ACPG. Forty-one of 453 retrieved articles met the inclusion criteria. The study results showed different patterns of ACPG among various communities. Furthermore, 84 social determinants were identified and categorized into structural and intermediary determinants. ACPG is a set of complex behaviors associated with different individual sociodemographic and behavioral characteristics; living and working conditions; COVID-19 knowledge, attitudes, and risk perceptions; exposure to sources and information level; leisure activities; social support; trust; social norms; psychosocial well-being; socio-economic position; and the socio-economic and political context. Interventions to promote ACPG among the general population should consider the identified social determinants of ACPG.
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