Fatigue is a significant contributing factor that reduces human ability and leads to accidents threatens the safety of aircraft lives. Approximately 70% fatal occur in commercial aviation operations are due factors. More specifically, crew fatigue contributes nearly 15 20% (Akerstedt, 2000). These incidents associated with pilot because long duty periods, disruption circadian rhythms, inadequat...

Fatigue driving is the leading cause of severe traffic accidents which considered as an important point research. Although a precise definition fatigue lacking, it possible to detect physiological characteristics human body determine whether person fatigue, such head shaking, yawning, and significant drop in breathing. In our study, actions were collected firstly, then different micro-Doppler p...

Cracks and craze lines are often observed in the enamel of human teeth, but they rarely cause tooth fracture. The present study evaluates fatigue crack growth in human enamel, and compares that to the fatigue response of sintered hydroxyapatite (HAp) with similar crystallinity, chemistry and density. Miniature inset compact tension (CT) specimens were prepared that embodied a small piece of ena...

Most of the research related to human fatigue in the aviation industry has focussed on long-haul pilots, but short-haul pilots also experience elevated levels of fatigue. The aim of this study was to examine the impact of early start times on the amount of sleep obtained prior to duty and on fatigue levels at the start of duty. Seventy short-haul pilots collected data regarding their duty sched...

the relationship between fatigue and mental health in chemical warfare victims with bronchiolitis obliterans     abbasi s [1] , mehdizadeh s [2] *, moqaddam m [3]     received: 8 mar, 2013 accepted: 10 may, 2013    abstract  background & aims : fatigue is one of the most debilitating symptoms in patients with respiratory disorders. in addition, among the chronic disease, lung disease have the h...

UNLABELLED The dynamic loading in human body, along with the corrosive body fluid, presents a great challenge for the practical use of biodegradable magnesium implants. In this study, a high purity magnesium (99.99wt.%) and two typical promising biodegradable magnesium alloys (binary Mg-1Ca and ternary Mg-2Zn-0.2Ca) were chosen as the experimental materials. Their dynamic mechanical performance...

The objective of the current study is to determine the fatigue limit of a clean and high-performance material named as HSLA-100 steel and to compare the obtained fatigue limit with that of theoretically predicted fatigue limit by statistics of extreme value (SEV) method. Also, the size of inclusions located at the site of fatigue crack nucleation on the fracture surface of the fatigue test spec...

BACKGROUND Fatigue, which interferes with one's physical and mental operation, resulting in strength reduction and weakness, is considered one of the most important issues in the workplace. In addition, it can cause diseases, occupational accidents, and a reduction in an individual's efficiency. The aforementioned effects can be aggravated by fatigue in shift workers who experience sleep distur...

Research in cancer-related fatigue lags far behind research in cancer-related pain and is astonishingly underdeveloped given the magnitude of the problem among cancer patients. This was recently recognized at the State-of-the-Science Conference on Symptom Management in Cancer: Pain, Depression, and Fatigue, held at the U.S. National Institutes of Health in July 2002. The results of patient surv...

Li, Jia L., Xiao N. Wang, Steve F. Fraser, Michael F. Carey, Tim V. Wrigley, and Michael J. McKenna. Effects of fatigue and training on sarcoplasmic reticulum Ca2 regulation in human skeletal muscle. J Appl Physiol 92: 912–922, 2002. First published October 19, 2001; 10.1152/ japplphysiol.00643.2000.—Little is known about fatigue and training effects on sarcoplasmic reticulum (SR) function in h...