Results 11 to 20 of about 5,374,393 (318)

Land Lapse Phenomenon and Surface Subsidence Law of Shield Tunnel Passing Through Rock-Bearing Formation

open access: yesFrontiers in Earth Science, 2022
When constructing subway tunnels in coastal cities, boulders with high strength and large volume are often encountered. A large number of engineering practices have shown that the existence of boulders will destroy the unity and homogeneity of the ...
Yu Guangming   +8 more
doaj   +1 more source

Hybrid water immersion simulation of manual IVA performance in weightlessness [PDF]

open access: green, 1971
A description is given of the development, tests, and analysis of a manual simulator. The simulator was developed to test mass handling and translation under weightlessness conditions by a test subject. The system is composed of a hybrid simulator with a
H. L. Loats, G. S. Mattingly
openalex   +2 more sources

Human gut microbiome and metabolite dynamics under simulated microgravity

open access: yesGut Microbes, 2023
The Artificial Gravity Bed Rest – European Space Agency (AGBRESA) study was the first joint bed rest study by ESA, DLR, and NASA that examined the effect of simulated weightlessness on the human body and assessed the potential benefits of artificial ...
Ana Ramos-Nascimento   +17 more
doaj   +1 more source

Protective effects of ginseng total saponins on reward-directed operant conditioning in hindlimb suspension rats

open access: yesDigital Chinese Medicine, 2023
Objective: To explore the therapeutic effects of ginseng total saponins (GTSs) on cognitive impairments in astronauts caused by prolonged exposure to microgravity environment.
Dong Lijinchuan   +8 more
doaj   +1 more source

Sensorimotor performance and haptic support in simulated weightlessness [PDF]

open access: yesExperimental Brain Research, 2020
AbstractThe success of many space missions critically depends on human capabilities and performance. Yet, it is known that sensorimotor performance is degraded under conditions of weightlessness. Therefore, astronauts prepare for their missions in simulated weightlessness under water.
Weber, Bernhard   +3 more
openaire   +4 more sources

Modelo de suspensão pela cauda e seu efeito em algumas propriedades mecânicas do osso do rato Model of tail suspension and its effect in some mechanical properties of the rat bone

open access: yesActa Ortopédica Brasileira, 2004
A manutenção do metabolismo mineral normal dos ossos é um resultado de vários fatores inclusive das solicitações mecânicas que são aplicadas aos ossos pelas contrações musculares e pela força da gravidade.
Adriana Valadares da Silva   +1 more
doaj   +1 more source

Ischemic Nephropathy in Newborns in Critical State (Clinical Picture, Diagnostics, Correction and Monitoring of Treatment Efficacy)

open access: yesZdorovʹe Rebenka, 2012
With a view of developing new methods for diagnostics and monitoring the effectiveness of treatment of ischemic nephropathy in newborns in neonatal intensive care units there was carried out a study of activity of alkaline phosphatase, γ ...
N.Yu. Kulikova   +3 more
doaj   +1 more source

Validation of Material Algorithms for Femur Remodelling Using Medical Image Data

open access: yesApplied Bionics and Biomechanics, 2017
The aim of this study is the utilization of human medical CT images to quantitatively evaluate two sorts of “error-driven” material algorithms, that is, the isotropic and orthotropic algorithms, for bone remodelling. The bone remodelling simulations were
Shitong Luo   +5 more
doaj   +1 more source

Motion control research of underwater spherical robot

open access: yesSystems Science & Control Engineering, 2018
Underwater spherical robot motion control can be used to simulate satellite motion control under weightlessness. In this paper, firstly the motion equation of spherical robot is established by force analysis.
Peilong Li, Lei Wang, Wenwen Zhang
doaj   +1 more source

Dry Immersion as a Ground-Based Model of Microgravity Physiological Effects

open access: yesFrontiers in Physiology, 2019
Dry immersion (DI) is one of the most widely used ground models of microgravity. DI accurately and rapidly reproduces most of physiological effects of short-term space flights.
Elena Tomilovskaya   +4 more
doaj   +1 more source

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