Results 51 to 60 of about 14,277,999 (385)

Failure Rates for Aging Aircraft [PDF]

open access: yesSafety, 2018
In any consideration of the operating condition, the age of a particular aircraft is a major factor. Much attention is focused on planes which are aged, that is, aircraft with chronological age or accumulated hours of use beyond a threshold. Being aged is a state, and should be distinguished from aging, which is a process of degradation with use.
Alex Richman   +2 more
openaire   +1 more source

Taurine promotes glucagon‐like peptide‐1 secretion in enteroendocrine L cells

open access: yesFEBS Letters, EarlyView.
Taurine, a sulfur‐containing amino acid, is likely taken up by enteroendocrine L cells via the taurine transporter. This process increases the levels of cytosolic ATP. The increase in intracellular Ca2+ concentrations and glucagon‐like peptide‐1 secretion through membrane depolarization is caused by the closure of ATP‐sensitive potassium channels ...
Yuri Osuga   +6 more
wiley   +1 more source

Maintenance and Exploitation of Electric, Hybrid, and Internal Combustion Vehicles

open access: yesEnergies, 2023
This paper presents an analysis of the costs, failure rate, vulnerability, and safety of electric, hybrid, and internal combustion vehicles (EV, HEV, and ICEV), including a review of literature sources, calculations, and investigations.
Iwona Krzyżewska, Katarzyna Chruzik
doaj   +1 more source

Making tau amyloid models in vitro: a crucial and underestimated challenge

open access: yesFEBS Letters, EarlyView.
This review highlights the challenges of producing in vitro amyloid assemblies of the tau protein. We review how accurately the existing protocols mimic tau deposits found in the brain of patients affected with tauopathies. We discuss the important properties that should be considered when forming amyloids and the benchmarks that should be used to ...
Julien Broc, Clara Piersson, Yann Fichou
wiley   +1 more source

Failure of ureteral access sheath insertion in virgin ureters: A retrospective tertiary care center study

open access: yesUrology Annals, 2020
Objective: The objective of the study was to identify the failure rate of insertion of ureteral access sheath (UAS) during primary flexible ureteroscopy (FURS).
Mohammad Alkhamees   +5 more
doaj   +1 more source

Standardization of cumulative failure rates [PDF]

open access: yesDemography, 1975
Abstract A method is proposed for standardizing life table cumulative failure rates for various cohorts so that they are adjusted to the distribution of exposure by age group for a particular cohort. An approximate standard error for the standardized cumulative failure rate is presented. Application of the methodology is illustrated by a
openaire   +3 more sources

Unraveling Mycobacterium tuberculosis acid resistance and pH homeostasis mechanisms

open access: yesFEBS Letters, EarlyView.
Mycobacterium tuberculosis exhibits a remarkable resilience to acid stress. In this Review, we discuss some of the molecular mechanisms and metabolic pathways used by the tubercle bacilli to adapt and resist host‐mediated acid stress. Mycobacterium tuberculosis (Mtb) is a successful pathogen that has developed a variety of strategies to survive and ...
Janïs Laudouze   +3 more
wiley   +1 more source

A Joint Production and Maintenance Optimization of Closed-Loop Production System under Carbon Emission with a Switching Subcontractor Consideration

open access: yesApplied Sciences, 2019
This study outlines a new forecasting problem of closed-loop production system under environmental aspect by proposing a new solution based on subcontracting.
Zied Hajej   +2 more
doaj   +1 more source

Reliability-Based Robust Design Optimization of Lithium-Ion Battery Cells for Maximizing the Energy Density by Increasing Reliability and Robustness

open access: yesEnergies, 2021
Lithium-ion batteries (LIBs) are increasingly employed in electric vehicles (EVs) owing to their advantages, such as low weight, and high energy and power densities.
Jinhwan Park   +7 more
doaj   +1 more source

Different Types of Voice User Interface Failures May Cause Different Degrees of Frustration [PDF]

open access: yesarXiv, 2020
We report on an investigation into how different types of failures in a voice user interface (VUI) affects user frustration. To this end, we conducted a pilot user study ($n=10$) and a main user study ($n=30$), both with a simple voice-operated calendar application that we built using the Alexa Skills Kit.
arxiv  

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