نتایج جستجو برای: fatigue of materials

تعداد نتایج: 21197044  

Atieh Ghasemi , Hamidreza Hatamian ,

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 level...

2016
X. D. Wang R. T. Qu S. J. Wu Q. Q. Duan Z. Q. Liu Z. W. Zhu H. F. Zhang Z. F. Zhang

Studying the effect of notch on the fatigue behavior of structural materials is of significance for the reliability and safety designing of engineering structural components. In this work, we conducted notch fatigue experiments of two high-strength materials, i.e. a Ti32.8Zr30.2Ni5.3Cu9Be22.7 metallic glass (MG) and a 00Ni18Co15Mo8Ti ultra-high strength steel (CM400 UHSS), and compared their no...

2008
Ken Gall Jeff Tyber Scott W. Robertson Robert O. Ritchie Hans J. Maier

We present results from a systematic study linking material microstructure to monotonic and fatigue properties of NiTi shape memory alloys. We consider Ni-rich materials that are either (1) hot rolled or (2) hot rolled and cold drawn. In addition to the two material processing routes, heat treatments are used to systematically alter material microstructure giving rise to a broad range of therma...

Background & Aims of the Study: Nursing is one of the highly stressful jobs. Nurses have to provide health service, in many cases, to the patients with incurable disease. Working in such environment induces severe and permanent mental pressures, which in long-run can create fatigue and negative effects on performance of the nurses. The main objective of the present study is to surve...

ژورنال: حیات 2007
غفاری, فاطمه , پورغزنین, طیبه ,

Background & Aim: Fatigue is a significant problem during pregnancy that has rarely been studied, and may increase the number of caesarean deliveries and preterm births. Reflexology can be utilized for decrease of fatigue. Therefore this study was aimed to identify the effect of sole reflexology on pregnant women’s fatigue severity. Methods & Materials: This research was a clinical trail study ...

ژورنال: یافته 2019

Background: The first technique for relaxing the body's muscles and relieving fatigue is relaxation, but another method for improving chronic fatigue is cognitive-behavioral therapy. According to these definitions, the purpose of this study was to compare the effectiveness of two methods of psychological treatment (cognitive-behavioral therapy) and muscle relaxation (relaxation) in reducing the...

هنربخش, مرضیه, کریمی, علی,

Background and purpose: Occupational fatigue is one of the main problems in work environments. Investigation of different aspects of occupational fatigue in drivers is of great benefit in reducing the level of road accidents. Materials and methods: We conducted a cross-sectional study in 420 drivers of heavy vehicles. Data was collected using a demographic and job information questionnaire a...

Background and Objective: Mental fatigue usually occurrs as a result of long-term cognitive activities. Mental fatigue could have important effects on the daily lives of healthy people. Therefore, the purpose of this study was to estimate mental fatigue and its impact on staff performance. Materials and Methods: This descriptive analytic study was performed on 10 staff with a mean age of 36±6....

Journal: :iranian rehabilitation journal 0
kasra mirhosseini physiotherapy department, faculty of rehabilitation, damavand avenue, tehran, iran abbas rahimi physiotherapy department, faculty of rehabilitation, damavand avenue, tehran, iran hessam soutakbar department of orthopaedic & accident surgery, university of nottingham, uk

objectives: improvement in cancer care increases life expectancy of patients with cancer, most of whom have experienced prolonged episodes of fatigue during and after their treatment. this has been found to reduce the quality of life and increase morbidity and mortality of such patients. therefore, additional interventions are beneficial to improve overall quality of life as well as longevity. ...

ژورنال: طب کار 2020

Introduction: Shift work is one of the threatening factors on Health. The important effects of shift work can be noted chronic fatigue. This study aimed to determine the association between Shift Work and chronic Fatigue among Educational Hospital Nurses. Materials and Methods: This cross-sectional study was carried out in Educational Hospital in Yazd. Using Stratified sampling technique, 200 ...

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