Results 31 to 40 of about 247,169 (216)

Degradation Characteristics and Reliability Assessment of 1310 nm VCSEL for Microwave Photonic Link

open access: yesApplied Sciences, 2022
The long-term reliability of the commercially available vertical-cavity surface-emitting laser (VCSEL) at 1310 nm wavelength is investigated. To do so, a high current accelerated life test is used to evaluate the 1310 nm VCSEL reliability.
Wenyuan Liao   +7 more
doaj   +1 more source

Forecasting the Dialysis Burden in Japan: Validation‐Based Projections of Prevalence and Incidence Through 2050

open access: yesTherapeutic Apheresis and Dialysis, EarlyView.
ABSTRACT Background Japan has one of the highest dialysis prevalence rates worldwide and a shrinking, aging population. Whether dialysis burden has entered a sustained post‐peak phase or whether recent declines partly reflect pandemic‐related disruptions remains uncertain.
Hatice Şahin   +2 more
wiley   +1 more source

RESEARCH ON THERMAL FATIGUE LIFE OF SOLDER JOINTS FOR AIRBORNE ELECTRONIC EQUIPMENT

open access: yesJixie qiangdu, 2022
Aiming at the problem of thermal fatigue of solder joints for airborne electronic equipment, the evaluation method of thermal fatigue life of solder joints suitable for engineering application was studied, considered that the empirical equation based on ...
CU QiangYi   +5 more
doaj  

Lifetime Analysis of Commercial 3 W UV-A LED

open access: yesCrystals, 2020
The lifetime of ultraviolet high-power light-emitting diodes (UV HP-LEDs) is an open issue due to their high current density, high temperature, and UV radiation.
F. Jose Arques-Orobon   +2 more
doaj   +1 more source

Organoids in pediatric cancer research

open access: yesFEBS Letters, EarlyView.
Organoid technology has revolutionized cancer research, yet its application in pediatric oncology remains limited. Recent advances have enabled the development of pediatric tumor organoids, offering new insights into disease biology, treatment response, and interactions with the tumor microenvironment.
Carla Ríos Arceo, Jarno Drost
wiley   +1 more source

RELIABILITY OPTIMUM DESIGN OF CONFIDENCE SAMPLES FOR CONSTANT-STRESS ACCELERATED LIFE TEST BASED ON WEIBULL DISTRIBUTION

open access: yesJixie qiangdu, 2019
In order to realize the rapid reliability evaluation of long-life and high reliability products at a normal stress level, the reliability statistical model of Arrhenius—Weibull was established, by using the Weibull distributions products with the ...
FENG XueFeng, TANG JiaYin, TAN QiTao
doaj  

Research of the Test Method of Double Stress Step-down Acceleration Life for Harmonic Reducer

open access: yesJixie chuandong, 2020
Aiming at the problems of low efficiency and imperfect test scheme of the existing accelerated life test of the harmonic reducer, a double stress step-down accelerated life test method is proposed. Taking the harmonic reducer for industrial robots as the
Jing Wang   +6 more
doaj  

Novel Accelerating Life Test Method and Its Application by Combining Constant Stress and Progressive Stress

open access: yesChinese Journal of Mechanical Engineering, 2018
Constant stress accelerated life tests (ALTs) can be applied to obtain a high estimation accuracy of reliability measurements, but these are time-consuming tests. Progressive stress ALTs can yield failures more quickly but cannot guarantee the estimation
Wen-Hua Chen   +4 more
doaj   +1 more source

Gut microbiome and aging—A dynamic interplay of microbes, metabolites, and the immune system

open access: yesFEBS Letters, EarlyView.
Age‐dependent shifts in microbial communities engender shifts in microbial metabolite profiles. These in turn drive shifts in barrier surface permeability of the gut and brain and induce immune activation. When paired with preexisting age‐related chronic inflammation this increases the risk of neuroinflammation and neurodegenerative diseases.
Aaron Mehl, Eran Blacher
wiley   +1 more source

Design and Implementation of Trial Test for Accelerated Life Test

open access: yes机车电传动, 2019
In order to predict the remaining life of electronic products of rail transit, trial test of ccelerated life test (ALT) was designed and implemented for designing scheme of ALT effectively.
Yuxiong PAN, Guifa ZHOU, Xu WANG
doaj  

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