نتایج جستجو برای: fatigue model

تعداد نتایج: 2167637  

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: :journal of rehabilitation in civil engineering 2016
amir kavussi morteza jalili qazizadeh abolfazl hassani

this research was conducted in order to evaluate fatigue behavior of asphalt mixes containing electric arc furnace (eaf) steel slag. after initial evaluation of the properties of eaf steel slag using x-ray diffraction (xrd) and scanning electric microscope (sem), six sets of laboratory mixtures were prepared. each set were treated replacing various portions of limestone aggregates of the mix wi...

Journal: :iranian red crescent medical journal 0
ardashir afrasiabifar school of nursing and midwifery, yasuj university of medical sciences (yums), yasuj, ir iran zahra mehri school of nursing and midwifery, yasuj university of medical sciences (yums), yasuj, ir iran; school of nursing and midwifery, yasuj university of medical sciences (yums), yasuj, ir iran. tel: +98-7433234115, fax: +98-7433234115 saied javad sadat school of nursing and midwifery, yasuj university of medical sciences (yums), yasuj, ir iran hamid reza ghaffarian shirazi school of medicine, yasuj university of medical sciences (yums), yasuj, ir iran

conclusions orem’s self-care model is significantly effective in reducing the fatigue of multiple sclerosis patients. objectives to determining the effect of orem’s self-care model on fatigue in multiple sclerosis patients. patients and methods this research involved a clinical trial. sixty-three multiple sclerosis patients at the vice-chancellor in treatment affairs of yasuj university of medi...

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه صنعتی اصفهان 1389

run-out-table (rot) is located between last finishing stand and down coiler in a hot strip mill. as the hot steel strip passes from rot, water jets impact on it from top and bottom and strip temperature decreases approximately from 800-950 °c to 500-750°c. the temperature history that strip experience while passing through rot affects significantly the metallurgical and mechanical properties, s...

Journal: :مهندسی مکانیک و ارتعاشات 0
کاظم رضاکاشی زاده دانشجوی دکتری، باشگاه پژوهشگران جوان، واحد سمنان، دانشگاه آزاد اسلامی ، سمنان، ایران محمد جعفر استاد احمد قرابی استادیار، گروه مهندسی مکانیک، واحد سمنان، دانشگاه آزاد اسلامی ، سمنان، ایران علیرضا ارغوان عضو هیئت علمی، گروه مهندسی مکانیک، واحد سمنان، دانشگاه آزاد اسلامی ، سمنان، ایران

this paper presents the fatigue life behavior of hub using random vibration based on road roughness. the main objectives of this study are to predict the fatigue life and to identify the critical location for evaluating fatigue damage. asphalt road surface profiles obtained in favorable circumstances by topography cameras and in according road classification iso 2631-1estimate road roughness su...

Journal: :international journal of civil engineering 0
z.y. wang department of civil engineering & mechanics, college of architecture and environment, sichuan university, chengdu, pr china,610065 q.y. wang department of civil engineering & mechanics, college of architecture and environment, sichuan university, chengdu, pr china,610065

this paper presents a finite element analysis and its related experimental test of corrugated steel web beams subjected to fatigue loading. a particular focus in this study was set on the fatigue failure arising from the web-to-flange welded joint of the corrugated steel web beam. a detailed three-dimensional finite element model which explicitly includes the geometry of the web-to-flange welds...

ژورنال: تحقیقات موتور 2018
, ,

In this article, the thermo-mechanical fatigue lifetime of the cylinder head of a passenger-car diesel engine has been estimated. At the first stage, stress and strain distributions in the cylinder head have been calculated using the two-layer visco-plastic model, available in the ABAQUS software. The calibration of the model was performed, using correlating of simulated hysteresis curves and l...

The performance of human resources is affected by various factors such as mental and physical fatigue, skill, and available time in the production systems. Generally, these mentioned factors have effects on human reliability and consequently change the reliability of production systems. Fatigue is a stochastic factor that changes according to other factors such as environmental conditions, work...

Journal: :journal of structural engineering and geo-techniques 2012
islam ezz el-arab w gray

the welding in cold formed areas is not only an open question for statically loaded sections (brittle fracture) but also for dynamically loaded structures (fatigue resistance). a lot of structures are subjected to dynamic loadings and unfortunately very little information about the influence of welding in the cold formed areas on fatigue resistance is available. in order to establish the fatigu...

Journal: :journal of nursing and midwifery sciences 0
saba karimi internal and surgical nursing,tarbiat modares university of medical sciences, tehran, iran zohreh vanaki tarbiat modares university of medical sciences, tehran, iran homayoon bashiri imam reza hospital, kermanshah university of medical sciences (kums), kermanshah, iran seyed abdolmotalab hassani internal and surgical nursing, amol university of medical sciences, amol, iran

background and purpose: colorectal cancer (crc) is one of the most highly prevalent and life-threatening digestive tract cancers. crc and its treatment are associated with numerous complications in the patients. orem’s self-care model is a theory on clinical improvement and reducing fatigue in patients with crc. this study aimed to investigate the effects of orem’s self-care theory on the nutri...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید