Results 1 to 10 of about 1,079,597 (317)

A Model-based Prognostics Methodology for Electrolytic Capacitors Based on Electrical Overstress Accelerated Aging [PDF]

A remaining useful life prediction methodology for electrolytic capacitors is presented. This methodology is based on the Kalman filter framework and an empirical degradation model.
Biswas, Gautam, Celaya, Jose, Goebel, Kai, Kulkarni, Chetan, Saha, Sankalita   +4 more
core   +1 more source

Lifetime Estrogen Exposure, Cumulative Lifetime Stress, and Cognition in Later Life [PDF]

, 2018
The main goal of this study was to begin to examine how stress and estrogen work together to influence memory and thinking in older women. We looked at how stressful experiences affected memory in older women and how the hormone estrogen influenced the ...
Senft Miller, Anna Erika
core   +1 more source

Lightning Pin Injection Test: MOSFETS in "ON" State [PDF]

The test objective was to evaluate MOSFETs for induced fault modes caused by pin-injecting a standard lightning waveform into them while operating. Lightning Pin-Injection testing was performed at NASA LaRC.
Celaya, Jose R., Ely, Jay J., Koppen, Sandra V., Mielnik, John J., Nguyen, Truong X., Saha, Sankalita, Szatkowski, George N., Vaughan, Roger K., Wysocki, Philip F.   +8 more
core   +1 more source

Flight experience and executive functions predict unlike professional pilots who are limited by the FAA's age rule, no age limit is defined in general aviation (GA) [PDF]

, 2010
Unlike professional pilots who are limited by the FAA's age rule, no age limit is defined in general aviation (GA). Some studies revealed significant aging issues on accident rates but these results are criticized.
Causse, Mickaël, Dehais, Frédéric, Pastor, Josette   +2 more
core  

Predicting the Perception of Aging Based on Optimism in the Elderly People

Sālmand, 2020
Objectives Changes in aging peiod can have profound effects on the life and mental health of the elderly people. Optimism and perception of aging are among the factors associated with the psychological wellbing of the elderly people.
Hiwa Saleh Manige, Shahab Papi, Robab Sahaf, Mojtaba Abbasi Asl, Maryam Ramshini, Mahdi Rassafiani, Amir Mohammad Bodaghi   +6 more
doaj  

The impact of life events on health-related quality of life in rural older adults: the moderating role of social support

Frontiers in Public Health
BackgroundGlobal aging is one of the most significant social trends of the 21st century. Health-Related Quality of Life (HRQoL) is an important indicator not only for evaluating the effectiveness of medical interventions, public health policies, and ...
Lijun Liu, Jiaman Li, Yiwen Tang, Cheng Chen, Chan Yu, Xiaofeng Li, Li Peng, Daikun Zheng   +7 more
doaj   +1 more source

Dynamic accelerated stress test and coupled on-line analysis program to elucidate aging processes in proton exchange membrane fuel cells

Scientific Reports
The application of hydrogen proton exchange membrane fuel cells (PEMFC) in greenhouse gas emission free heavy-duty vehicles requires extremely durable PEMFC components with service lives in the range of 30,000 h.
Lena Birkner, Michael Foreta, Ali Rinaldi, Anton Orekhov, Marc-Georg Willinger, Maik Eichelbaum   +5 more
doaj   +1 more source

Using surface free energy and mechanical methods to investigate the effect of aging on the fatigue cracking potential of UHMWPE-modified HMA

Case Studies in Construction Materials
Aging due to environmental conditions significantly affects the occurrence of fatigue cracking in hot-mix asphalt (HMA). Previous analyses showed that aging reduces mastic resistance and bitumen-aggregate adhesion, but these experiments were usually ...
Gholam Hossein Hamedi, Hamidreza Talebi, Salar Lahouti Harehdasht   +2 more
doaj   +1 more source

The Effect of an Aging Suit on Young and Middle-Aged Adults’ Attitudes Toward Older Adults [PDF]

, 2018
Background: Ageism, a type of discrimination based on a person’s age, can lead to negative attitudes, intolerance, and judgment towards older adults. With the increase of older adults in society, understanding the correlates of negative attitudes becomes
Allen, Kelly
core   +2 more sources

The relationship between square dance exercise and quality of life in middle-aged and older adults: chain mediated effects of negative emotions and attitudes toward aging

Frontiers in Public Health
BackgroundWith the continuous development of society and the economy, population aging has become an inevitable global development trend, triggering a series of social problems and having a more serious impact on the physical and mental health of middle ...
Ting Ouyang, Ting Ouyang, Yujia Qu, Xinyu Du, Ming Fan, Yan Wang   +5 more
doaj   +1 more source