Results 1 to 10 of about 501,614 (244)

Flight safety in patients with arrhythmia. [PDF]

open access: yesAnatol J Cardiol, 2021
As it is comfortable, fast, and safe, an increasing number of patients with heart disease prefer to travel by flight. However, there is not much information about the problems that patients with arrhythmia may experience during air travel. In addition, the precautions to be taken with these patients during a flight are uncertain.
Katkat F.
europepmc   +5 more sources

Coronavirus disease 2019 and flight safety. [PDF]

open access: yesAnatol J Cardiol, 2021
Air traffic has been a main vector for the global spread of COVID-19. The risk of in-flight transmission can vary widely, depending on different parameters. Therefore, implementation of measures for air travel safety is very important.
Özcan S.
europepmc   +5 more sources

Flights to Safety [PDF]

open access: greenSSRN Electronic Journal, 2018
AbstractWe identify flight-to-safety (FTS) days for twenty-three countries using only stock and bond returns and a model averaging approach. FTS days comprise less than 2% of the sample and are associated with a 2.7% average bond-equity return differential and significant flows out of equity funds and into government bond and money market funds.
Lieven Baele   +3 more
openalex   +7 more sources

An I-Shaped Slot Grid Antenna Array with Substrate Integration and Enhanced Bandwidth [PDF]

open access: yesJournal of Electromagnetic Engineering and Science, 2023
Aimed to transmit electromagnetic energy in wireless power transfer, a planar substrate-integrated grid antenna array with four I-shaped slots was designed.
Zhiyi Li   +4 more
doaj   +1 more source

Thermal Runaway Characteristics of 18650 NCM Lithium-ion Batteries under the Different Initial Pressures

open access: yesElectrochemistry, 2022
To better understand the thermal runaway characteristics of lithium-ion batteries in civil aviation transportation environments, an experimental platform for the fire and explosion of lithium-ion batteries was designed and built.
Quanyi LIU   +4 more
doaj   +1 more source

Two-dimensional spreading properties and sealing characteristics of fluorocarbon surfactants on several typical hydrocarbon fuels

open access: yesScientific Reports, 2021
A new method for studying the two-dimensional spreading properties and sealing characteristics of surfactant solution on oil surface was provided. The actual spreading situation of the C4-Br/oil systems in axisymmetric geometry was observed directly ...
Xuhong Jia   +5 more
doaj   +1 more source

Influence of Aerogel Felt with Different Thickness on Thermal Runaway Propagation of 18650 Lithium-ion Battery

open access: yesElectrochemistry, 2022
With the improvement of lithium-ion batteries in civil aviation transportation, the thermal safety of lithium-ion batteries can not be ignored. Especially in a battery pack, the thermal runaway of batteries can spread from cell to cell, resulting in ...
Quanyi LIU   +3 more
doaj   +1 more source

Multiaxial fatigue of in-service aluminium longerons for helicopter rotor-blades [PDF]

open access: yesFracture and Structural Integrity, 2016
Fatigue cracking of longerons manufactured from Al-alloy AVT-1 for helicopter in-service rotor-blades was considered and crack growth period and equivalent of tensile stress for different blade sections were estimated.
A. Shanyavskiy, A. Toushentsov
doaj   +3 more sources

Modeling and Simulation of Wake Safety Interval for Paired Approach Based on CFD

open access: yesJournal of Advanced Transportation, 2021
In order to relieve the stress caused by the surge of flight flow, Closely Spaced Parallel Runways (CSPRs) have been built in many hub airports, and a paired approach mode has been applied to CSPRs in some countries.
Xin He   +3 more
doaj   +1 more source

A novel form stable phase change material with comb-like cross-linked polyurethane as supporting skeleton

open access: yesScientific Reports, 2023
To improve the homogeneity of phase-change materials (PCMs) composites for thermal energy storage, the poly(ethylene glycol monomethyl ether)-based trimethylolpropane (Ymer-N120) with long side ethyoxyl chains is employed to form comb-like polyurethane ...
Yunyun Yang   +5 more
doaj   +1 more source

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