Results 41 to 50 of about 2,697 (226)

Impacts of the Spaceflight to the Immune System

Hanggong uju uihakoeji, 2021
Changes the gravity has a significant affect on the immune system. Astronauts experience the gravity changing during spaceflight, especially when launching and landing they experience hypergravity, and during spaceflight they feel microgravity.
Doston Sultonov, Young Hyo Kim
doaj   +1 more source

A firmer understanding of the effect of hypergravity on thyroid tissue: cholesterol and thyrotropin receptor. [PDF]

PLoS ONE, 2014
Maintaining a good health requires the maintenance of a body homeostasis which largely depends on correct functioning of thyroid gland. The cells of the thyroid tissue are strongly sensitive to hypogravity, as already proven in mice after returning to ...
Elisabetta Albi, Francesco Curcio, Andrea Lazzarini, Alessandro Floridi, Samuela Cataldi, Remo Lazzarini, Elisabetta Loreti, Ivana Ferri, Francesco Saverio Ambesi-Impiombato   +8 more
doaj   +1 more source

Microgravity and Hypergravity Induced by Parabolic Flight Differently Affect Lumbar Spinal Stiffness

Frontiers in Physiology, 2020
The objective of this study was to determine the response of the lumbar spinal motor control in different gravitational conditions. This was accomplished by measuring indicators of lumbar motor control, specifically lumbar spinal stiffness, activity of ...
Jaap Swanenburg, Anke Langenfeld, Christopher A. Easthope, Michael L. Meier, Oliver Ullrich, Oliver Ullrich, Oliver Ullrich, Oliver Ullrich, Petra Schweinhardt   +8 more
doaj   +1 more source

Hypergravity disrupts murine intestinal microbiota [PDF]

Scientific Reports, 2019
AbstractDuring spaceflight, organisms are subjected to various physical stressors including modification of gravity (G) that, associated with lifestyle, could lead to impaired immunity, intestinal dysbiosis and thus potentially predispose astronauts to illness.
Corentine Alauzet, Lisiane Cunat, Maxime Wack, Alain Lozniewski, Hélène Busby, Nelly Agrinier, Catherine Cailliez-Grimal, Jean-Pol Frippiat   +7 more
openaire   +2 more sources

Performance testing and preparation methods of similitude materials for explosion modeling in gravelly soil

Baozha yu Chongji
Hypergravity centrifuge model testing serves as an effective method for simulating prototype explosion effects, whose successful application relies on soil simulants capable of replicating the dynamic response of in-situ soil.
Haisheng WANG, Longhua GUAN, Bin ZHU, Qiang LU, Yang DING, Junchao LI, Yubing WANG, Weijun LI, Zheng PANG   +8 more
doaj   +1 more source

The Synergistic Effect of Microwave Radiation and Hypergravity on Rats and the Intervention Effect of Rana Sylvatica Le Conte Oil

Dose-Response, 2017
Aim: The phenomena of hypergravity and microwave radiation are widespread, which cause more and more concern for the hazards to human health. The aim of this study was to investigate the synergistic effect of microwave radiation and hypergravity on rats ...
Wei Sun, Yudan Yang, Hongmei Yu, Luowei Wang, Su Pan   +4 more
doaj   +1 more source

Consistency problems of hypergravity

Physics Letters B, 1979
Abstract The constraints arising upon coupling a massless spin 5 2 field to gravity are analyzed. In contrast to supergravity, they depend not only on the Einstein tensor, but also on the off-shell (Weyl) components of the curvature. The latter contributions do vanish, however, for “self-dual” systems, i.e., half-flat gravitational and pure ...
C. Aragone, S. Deser
openaire   +1 more source

Responses to Hypergravity in Proliferation of Paramecium tetraurelia [PDF]

Zoological Science, 2003
It has been reported that Paramecium proliferates faster when cultured under microgravity in orbit, and slower when cultured under hypergravity. This shows that the proliferation rate of Paramecium affected by gravity. The effect of gravity on Paramecium proliferation has been argued to be direct in a paper with an axenic culture under hypergravity. To
Yuko, Kato, Yoshihiro, Mogami, Shoji A, Baba   +2 more
openaire   +2 more sources

Enhancing hydrogen evolution reaction by harnessing bubble dynamics regulation: Principles, methods, and outlook

Droplet, EarlyView.
Bubble dynamics pose critical bottlenecks to hydrogen evolution reaction efficiency, causing active site isolation, increased ohmic resistance, and concentration overpotential, especially at high current densities. This review comprehensively summarizes passive and active bubble manipulation strategies, elucidates their underlying principles, and ...
Ziwei Guo, Chunhui Zhang, Yunxun Liu, Yi Han, Jinghang Pan, Lingyao Zhang, Chuanqi Nie, Yuejing Zhao, Kesong Liu, Cunming Yu, Lei Jiang   +10 more
wiley   +1 more source

Is sleep affected after microgravity and hypergravity exposure? A pilot study

Journal of Sleep Research, Volume 34, Issue 2, April 2025.
Summary Sleep is known to be affected in space travel and in residents of the international space station. But little is known about the direct effects of gravity changes on sleep, if other factors, such as sleep conditions, are kept constant. Here, as a first exploration, we investigated sleep before and after exposure to short bouts of microgravity ...
Barbara Le Roy, Aurore Jouvencel, Anika Friedl‐Werner, Ludmila Renel, Youcef Cherchali, Raouf Osseiran, Ernesto Sanz‐Arigita, Jean‐René Cazalets, Etienne Guillaud, Ellemarije Altena   +9 more
wiley   +1 more source