Results 21 to 30 of about 12,584,796 (316)

Practice parameters for the use of actigraphy in the military operational context: the Walter Reed Army Institute of Research Operational Research Kit-Actigraphy (WORK-A)

Military Medical Research, 2020
Background The Walter Reed Army Institute of Research (WRAIR) Operational Research Kit-Actigraphy (WORK-A) is a set of unique practice parameters and actigraphy-derived measures for the analysis of operational military sleep patterns. The WORK-A draws on
Jaime K. Devine, Jake Choynowski, Tina Burke, Kajsa Carlsson, Vincent F. Capaldi, Ashlee B. McKeon, Walter J. Sowden   +6 more
doaj   +1 more source

Performance and overall evaluation of nano-alumina-modified asphalt mixture

Nanotechnology Reviews, 2022
The performance of asphalt mixture affects the service of pavement. Nano-alumina was employed as asphalt mixture modification to improve pavement performances.
Cao Yangsen, Liu Zhuangzhuang, Song Wenjia   +2 more
doaj   +1 more source

The effect of forging texture and machining parameters on the fatigue performance of titanium alloy disc components

International Journal of Fatigue, 2021
The Mechanisms of fatigue failure in Ti-6Al-2Sn-4Zr-6Mo forged discs are investigated: the effects of forging and machining operations on fatigue are decoupled.
D. Fernández, B. Wynne, Pete Crawforth, K. Fox, M. Jackson   +4 more
semanticscholar   +1 more source

A Study on the Application of Rock Asphalt from Sichuan China Based on Anti-Rutting Performance

Applied Sciences, 2019
To solve the early rutting failure of asphalt pavement, the application of rock asphalt from Sichuan, China, based on anti-rutting performance, was studied.
Limin Li, Zhaoyi He, Weidong Liu, Cheng Hu   +3 more
doaj   +1 more source

The impact of fatigue on exercise performance [PDF]

Arthritis & Rheumatism, 1994
AbstractThe purpose of this paper is to discuss the impact of fatigue on exercise performance. First, fatigue will be defined and distinguished from similar constructs. Second, examples of instruments to measure fatigue in the rheumatic diseases are highlighted. Next, the social implications of fatigue are briefly mentioned.
openaire   +2 more sources

Fatigue characteristics of copper-steel electron beam welding materials

Cailiao gongcheng, 2023
The fatigue performance of dissimilar metal welded components has an important influence on the service reliability of spacecraft. The fatigue life and fatigue fracture mechanism of dissimilar metal welded joints of QCr0.8 copper alloy and 1Cr21Ni5Ti ...
CHEN Yu, ZHOU Genshu, ZHAN Teng, LI Chengji, HUA Xiaoming, ZHANG Quanming, FU Qinqin, LIU Xinjie, CHEN Kunyu, ZHANG Qinlian   +9 more
doaj   +1 more source

Fatigue performance of metal additive manufacturing: a comprehensive overview

Virtual and Physical Prototyping
Fatigue life assessment of metal additive manufacturing (AM) products has remained challenging due to the uncertainty of as–built defects, heterogeneity of the microstructure, and residual stress.
H. Javidrad, B. Koç, H. Bayraktar, U. Şimşek, Kadir Gunaydin   +4 more
semanticscholar   +1 more source

Fatigue performance of long-term aged crumb rubber modified bitumen containing warm-mix additives

Construction and Building Materials, 2020
Recently warm mix asphalt (WMA) technologies have been introduced to rubberized asphalt mixtures to decrease the required construction temperatures and to alleviate the hazardous gas emissions.
Haopeng Wang, Xueyan Liu, M. V. D. van de Ven, G. Lu, S. Erkens, A. Skarpas   +5 more
semanticscholar   +1 more source

Optimization of ZL104 Properties and Microstructure Study After Ultrasonic Rolling [PDF]

Materials Research
In this study, the surface of ZL104 was ultrasonically rolled (USRP) to provide better overall mechanical properties and corrosion resistance. USRP experiments were conducted on the surface by setting different parameters to improve the performance of ...
Renhui Liu, Shubo Xu, Kangwei Sun, Xiaoyu Ju, Weihai Zhang, Xue Yang, Yuefei Pan, Jianing Li, Guocheng Ren   +8 more
doaj   +1 more source

Evidence for unconscious regulation of performance in fatigue [PDF]

Scientific Reports, 2017
AbstractSince fatigue is prevalent in modern societies, it is necessary to clarify the neural mechanisms of fatigue. The regulation of performance through fatigue sensation is one of the mechanisms that decreases performance in fatigue. However, it is unknown whether subjective feeling of fatigue is necessary for the regulation of performance. Here, we
Ishii, Akira, Tanaka, Masaaki, Yoshikawa, Takahiro, Watanabe, Yasuyoshi   +3 more
openaire   +2 more sources