Results 21 to 30 of about 1,247,116 (346)

The Brazilian version of the Health-Related Quality of Life Questionnaire for Nausea and Vomiting of Pregnancy: translation, cross-cultural adaptation and reliability – an observational cross-sectional study

open access: yesSão Paulo Medical Journal, 2021
BACKGROUND: The Health-Related Quality of Life Questionnaire for Nausea and Vomiting of Pregnancy (NVPQOL) is a validated questionnaire assessing quality of life among pregnant women with nausea and vomiting.
Adriana Piccini   +5 more
doaj   +1 more source

On a Generalized Burr Life-Testing Model: Characterization, Reliability, Simulation, and Akaike Information Criterion

open access: yesJournal of Statistical Theory and Applications (JSTA), 2019
For a continuous random variable X, M. Shakil, B.M.G. Kibria, J. Stat. Theory Appl. 9 (2010), 255–282, introduced a generalized Burr increasing, decreasing, and upside-down bathtub failure rate life-testing model.
M. Ahsanullah   +3 more
doaj   +1 more source

Life cycle testing and reliability analysis of prismatic lithium-iron-phosphate cells

open access: yesInternational Journal of Sustainable Energy
A cell’s ability to store energy, and produce power is limited by its capacity fading with age. This paper presents the findings on the performance characteristics of prismatic Lithium-iron phosphate (LiFePO4) cells under different ambient temperature ...
Anindita Roy   +4 more
doaj   +1 more source

FMECA and FTA analysis applied to the manufacturing process of pulsating heat pipes

open access: yesHeritage and Sustainable Development, 2023
Pulsating heat pipes (PHPs) offer significant advantages for the thermal control of electronic components due to their simple manufacturing and high heat transfer rates.
Pamela Hulse   +4 more
doaj   +1 more source

Fuzzy multicomponent stress-strength reliability in presence of partially accelerated life testing under generalized progressive hybrid censoring scheme subject to inverse Weibull model

open access: yesMethodsX
It typically takes a lot of time to monitor life-testing experiments on a product or material. Units can be tested under harsher conditions than usual, known as accelerated life tests to shorten the testing period. This study's goal is to investigate the
Neama Salah Youssef Temraz
doaj   +1 more source

Reliable Subsea Equipment

open access: yesMeasurement + Control, 2009
Subsea systems designed for continuous operation on the seabed are required to demonstrate very high reliability and it is not uncommon to encounter requirements that state a 10 year Mean Time Between Failure (MTBF) and 20 year design life.
Gregor Deans
doaj   +1 more source

Research on Testing Methods of Life Detection Equipment for Water-bearing Soil Disasters [PDF]

open access: yesE3S Web of Conferences
Aiming at the current water-bearing soil disaster life detection equipment testing research is relatively small, mainly relying on key components and equipment as a whole of the factory test, the lack of standardised system testing problems, this paper ...
Nan Yanyun, Yan Jin, Xie Shizhe
doaj   +1 more source

New bench for testing the reliability of windows and doors of passenger cars

open access: yesВестник Научно-исследовательского института железнодорожного транспорта, 2021
The article describes a new bench for testing the reliability of passenger car windows and doors. The bench can be used in various industries, mainly in transport engineering, as well as in the construction industry.
V. A. Makarov
doaj   +1 more source

Reliability Analysis of the High-speed Train Bearing Based on Wiener Process

open access: yesInformation, 2018
Because of the existence of uncertainty measurement in the process of bearings degradation, it is difficult to carry out the reliability analysis. The random performance degradation model is used to analyze the reliability life of high-speed train ...
Dexin Zhu, Cui Nan
doaj   +1 more source

Reliability of Microinverters for Photovoltaic Systems: High-Temperature Accelerated Testing with Fixed and Cyclic Power Stresses

open access: yesEnergies, 2023
This paper presents an extended, accelerated reliability evaluation of forty microinverters, module-level power electronic (MLPE) units for photovoltaic (PV) modules.
Muhammad Afridi   +4 more
doaj   +1 more source

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