Results 11 to 20 of about 8,104,821 (348)

Multidisciplinary Optimization Design of Low-Noise Propellers

open access: yesAerospace, 2023
In this paper, a multidisciplinary optimization design method and its verification of low-noise aircraft propellers considering aerodynamics, noise, and structural strength were carried out to further reduce the aerodynamic noise of the aircraft ...
Dongwen Xue   +3 more
doaj   +1 more source

Structure design of variable camber wing trailing edge based on multi-block rotating mechanism

open access: yesXibei Gongye Daxue Xuebao, 2023
The variable camber trailing edge enables the aircraft to maintain the best aerodynamic performance throughout the flight envelope, so as to achieve the ultimate goal of reducing aircraft fuel consumption and air pollutant emissions.
SHI Xintong   +4 more
doaj   +1 more source

Effects of remote limb ischemic conditioning on muscle strength in healthy young adults: A randomized controlled trial [PDF]

open access: yes, 2020
Remote limb ischemic conditioning (RLIC) is a clinically feasible method in which brief, sub-lethal bouts of ischemia protects remote organs or tissues from subsequent ischemic injury.
Bland, Marghuretta D   +7 more
core   +2 more sources

An Image Case of Lepromatous Leprosy in a Patient With Parkinson Disease

open access: yesAnnals of Internal Medicine: Clinical Cases
A 72-year-old man with Parkinson disease presented with 18 months of diffuse blotchiness without associated pain or pruritis. Fite stain and Mycobacterium leprae polymerase chain reaction of a skin biopsy specimen were positive, and he was diagnosed with
Rachel E. Strength, Shirin Mazumder
doaj   +1 more source

Literature Survey of Experiment of Vibration and Response for Rotating Blade with Dry Friction Damper

open access: yesHangkong gongcheng jinzhan, 2018
It is of important significance to study the vibration characteristics and vibration suppression technology of aero-engine rotating blades to improve the engine performance, structural integrity and working reliability.
Qin Jie, Yan Qun, Huang Wenchao
doaj   +1 more source

Heat flux calculation method of modular quartz lamp based on ray tracing method

open access: yesXibei Gongye Daxue Xuebao
In order to solve the problem that the heat flow calculation time is so long of modular quartz lamp with reflective screen, a ray tracing method is proposed to calculate the radiant heat flow of modular quartz lamp.
LI Xinxin   +4 more
doaj   +1 more source

Calculation method of radiation heat flux field for quartz lamp array for the constant diameter cabins of missile

open access: yesXibei Gongye Daxue Xuebao
A rapid calculation method was proposed for the heat flux field of the cylindrical quartz lamp array for the ground thermal test of the constant diameter cabin of missile under multi-elements mesh for the semi-cylinder of the filament.
ZHANG Xiaoxiao   +4 more
doaj   +1 more source

Kinetics of Plastic Deformation Localization Bands in Polycrystalline Nickel

open access: yesMetals, 2021
Jerky flow has recently aroused interest as an example of complex spatiotemporal dynamics resulting from the collective behavior of defects in Al- and Mg-based alloys under loading.
Svetlana A. Barannikova   +1 more
doaj   +1 more source

Notions of Monad Strength

open access: yes, 2013
Over the past two decades the notion of a strong monad has found wide applicability in computing. Arising out of a need to interpret products in computational and semantic settings, different approaches to this concept have arisen.
Mulry, Philip
core   +2 more sources

Extreme thermal load generation method for high-temperature structures in atmospheric environment

open access: yesXibei Gongye Daxue Xuebao
For addressing the severe aerodynamic thermal load simulation challenge of hypersonic aircraft in ground tests, an extreme thermal load generation method based graphite for high-temperature structures in atmospheric environment is proposed.
WANG Binwen   +4 more
doaj   +1 more source

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