نتایج جستجو برای: Fatigue design

تعداد نتایج: 1024123  

پایان نامه :دانشگاه آزاد اسلامی واحد علوم پزشکی تهران - دانشکده پزشکی 1389

سابقه هدف: msیکی از شایعترین اختلالات نورولوژیک ناتوان کننده است که با تریاد التهاب ، demyelination ، وگلیوزیس نورونها مشخص می شود . بیش از 2.5 میلیون نفر در جهان به این بیماری مبتلا هستند و بیشترین شیوع آن در بالغین جوان است . یکی از شایعترین علایم ms ، خستگی می باشد که حدود 90 % بیماران به آن دچارند. با وجودیکه fatigue ، شایعترین علت ناتوانی بیماران ms می باشد ، هنوز پزشکان در تشخیص و درمان آ...

Journal: :energy equipment and systems 2014
mehdi shirani gunnar härkegård

a comprehensive review of fatigue behavior and fatigue design of heavy section wind turbine castings made of ductile iron en-gjs-400-18-lt is performed. common metallurgical defects that are affecting fatigue behavior of this material were studied. review of different researches on quantitative effect of chunky graphite and micro structure on fatigue behavior of en-gjs-400-18-lt was performed. ...

Gunnar Härkegård Mehdi Shirani,

A comprehensive review of fatigue behavior and fatigue design of heavy section wind turbine castings made of ductile iron EN-GJS-400-18-LT is performed. Common metallurgical defects that are affecting fatigue behavior of this material were studied. Review of different researches on quantitative effect of chunky graphite and micro structure on fatigue behavior of EN-GJS-400-18-LT was perform...

Journal: :iranian red crescent medical journal 0
yahya rasoulzadeh department of occupational health and ergonomics, faculty of health, tabriz university of medical sciences, tabriz, ir iran ahmad bazazan department of occupational health and ergonomics, faculty of health, tabriz university of medical sciences, tabriz, ir iran abdolrasoul safaiyan department of vital statistics and epidemiology, faculty of health, tabriz university of medical sciences, tabriz, ir iran iman dianat department of occupational health and ergonomics, faculty of health, tabriz university of medical sciences, tabriz, ir iran; department of occupational health and ergonomics, faculty of health, tabriz university of medical sciences, tabriz, ir iran. tel: +98-4113357580, fax: +98-4113340634

conclusions the study findings highlight the importance of the mental aspect of fatigue in this working group. these results have possible implications for workers’ health and well-being and for the design of shift work systems, for industrial workers. background shift work is a well-recognized occupational health hazard in both industrialized and industrially developing countries. prolonged wo...

Journal: :caspian journal of neurological sciences 0
atieh ghasemi hamidreza hatamian professor, department of neurology, poursina hospital, guilan university of medical sciences, rasht, iran ; [email protected]

background: cancer can lead to fatigue and the manifestation of psychological symptoms in patients, including depression, anxiety, and stress. objectives: the aim of this study was to investigate the relationship between fatigue and psychological symptoms in patients with gastrointestinal cancer. materials and methods: the study had a descriptive, cross-sectional design. we assessed levels of f...

Journal: :Journal of Engineering Materials and Technology 1983

2015
Wei-zhen Chen Jun Xu Bo-chong Yan Zhi-ping Wang

Fatigue is one of the main factors that cause the collapse of steel bridges. Anti-fatigue design therefore draws close attention all over the world. The design must have a fatigue load model based upon native traffic load conditions. But the Chinese steel bridge design specification does not include any fatigue load model for anti-fatigue design. So it is imperative to develop the model. This p...

Fadavie-Ardestani, M. , Kesharvarz, A. , Ranjbarnodeh, E., Saeed Kiasat, M. ,

Nowdays, the prediction and prevention of fatigue failures is converted to one of the most concerns for industry owners. Since the processes of fatigue suddenly occur, it is most important and necessary to recognize the effective factors of fatigue life of structures. Mechanical and thermal multiple loading are the important factors of the fatigue failure. In order to appropriate fatigue design...

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