Results 141 to 150 of about 1,152 (181)
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The role of calcium ions in cytological effects of hypogravity
Advances in Space Research, 1984Electron-cytochemical and biochemical methods made it possible to reveal certain differences in ATPase activity stimulation by calcium ions in root apex cells of pea seedlings and moss protonema Funaria hygrometrica grown under stationary and slow clinostatic (2 rev/min) conditions. It was showed that under clinostatic conditions in comparison with the
E L, Kordyum +4 more
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Theoretical study on microgravity and hypogravity simulated by random positioning machine
Acta Astronautica, 2020The random positioning machine (RPM), which continuously changes the gravity direction acting on a subject, can provide the simulated microgravity and planet hypogravity environments to the bioreactor on Earth.
T. Kim
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Genes & Cells, 2021
Earlier, in mice after a 30-day space flight on the Bion-M1 biosatellite, we found signs of a negative effect of weightlessness on the structure of myelinated fibers of the spinal cord tracts; these findings indicate their involvement in the pathogenesis
A. N. Lisyukov +8 more
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Earlier, in mice after a 30-day space flight on the Bion-M1 biosatellite, we found signs of a negative effect of weightlessness on the structure of myelinated fibers of the spinal cord tracts; these findings indicate their involvement in the pathogenesis
A. N. Lisyukov +8 more
semanticscholar +1 more source
Metabolism and biochemistry in hypogravity
Acta Astronautica, 1991The headward shift of body fluid and increase in stress-related hormones that occur in hypogravity bring about a number of changes in metabolism and biochemistry of the human body. Such alterations may have important effects on health during flight and during a recovery period after return to Earth.
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Epinastic Thresholds in a Simulated Hypogravity Environment
Physiologia Plantarum, 1971AbstractThe morphological changes of several grasses, dicotyledons and thallial plants to decreasing increments of gravity from the normal 1 g to 0 g were determined. The various levels of simulated hypogravity were obtained by regulation of the angles of the rotating clinostats.
HERBERT M. CONRAD, K. YOKOYAMA
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Comparative Physiology of Plant Behaviour in Simulated Hypogravity
Annals of Botany, 1981D K Chapman
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Effect of physical fitness and training on physiological responses to hypogravity
Acta Astronautica, 1981The studies on the orthostatic tolerance during the hypodynamics exposure seem to be significant in connection with the selection, training and health maintenance of astronauts. Using male human subjects of various physical fitness levels, fluctuations of their physical fitness through 2 weeks of vigorous athletic training were measured in many ...
H, Saiki +7 more
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Development of Walking Pattern Evaluation System for Hypogravity Simulation
2006 International Conference of the IEEE Engineering in Medicine and Biology Society, 2006There are three primary techniques for simulating partial gravity: water immersion (neutral buoyancy), parabolic flight, and body suspension device (BSD) models. Underwater Immersion. During tests, a neutrally buoyant subject is ballasted to simulate the desired partial gravity loading.
Roberta Leaes +7 more
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The effect of hypogravity and hypergravity on cells of the immune system
Journal of Leukocyte Biology, 1993Abstract This article reviews the gravity effects discovered in T lymphocytes and other cells of the immune system. The strong depression of mitogenic activation first observed in an experiment conducted in Spacelab 1 in 1983 triggered several other investigations in space and on the ground in the clinostat and in the centrifuge in the ...
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