Results 211 to 220 of about 17,651 (246)
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Effect of simulated microgravity on vascular contractility
Journal of Applied Physiology, 1998Microgravity was simulated in Sprague-Dawley (SD) and Wistar (W) rats by using a tail harness to elevate the hindquarters, producing hindlimb unweighting (HU). After 20 days of HU treatment, blood vessels from both HU and control rats were cut into 3-mm rings and mounted in tissue baths for the measurement of isometric contraction.
R E, Purdy +4 more
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Response of human gut microbiota under simulated microgravity
Applied Microbiology and Biotechnology, 2022The present study was conducted to investigate the influence of microgravity on human gut microbiota using 16S rRNA gene sequencing in vitro. The diamagnetic material magnetic levitation method was used to simulate weightless environment. The human gut microbiota was cultured under two different conditions: normal gravity (1 g), and simulated ...
Yijuan Han +4 more
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Body fluid metabolism at actual and simulated microgravity
Medicine & Science in Sports & Exercise, 1996Recent observations from space missions indicate that weightlessness does not induce an increase in diuresis and natriuresis in astronauts. Rather, both oral fluid and sodium intake as well as renal fluid and sodium output appear reduced compared with the preflight condition.
Gerzer, R., Heer, M., Drummer, C.
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Behavior of stem cells under outer‐space microgravity and ground‐based microgravity simulation
Cell Biology International, 2015AbstractWith rapid development of space engineering, research on life sciences in space is being conducted extensively, especially cellular and molecular studies on space medicine. Stem cells, undifferentiated cells that can differentiate into specialized cells, are considered a key resource for regenerative medicine.
Cui, Zhang +3 more
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[Change of pulmonary circulation in microgravity and simulated microgravity].
Hang tian yi xue yu yi xue gong cheng = Space medicine & medical engineering, 2002Fluid is transferred cephalad in microgravity and simulated microgravity, and the pulmonary circulation is the first to be affected. Blood and fluid contents in the lungs increase, but unevenly distributed among various zones of the lungs. Blood vessels in the lungs are filled and distend.
L, Sun, Q L, Xiang, D S, Wang, W, Ren
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Interactions of Microcarriers in Simulated Microgravity
Advances in Heat and Mass Transfer in Biotechnology, 1999Abstract In this study, we developed a numerical model that simulated the simultaneous motion of several microcarriers in the simulated microgravity environment of the NASA HARV bioreactor. Simulations were used to predict the interaction and collision of these multiple particles under different initial seeding densities.
David F. Meaney +3 more
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Simulated microgravity‐induced epigenetic changes in human lymphocytes
Journal of Cellular Biochemistry, 2010AbstractReal space flight and modeled microgravity conditions result in changes in the expression of genes that control important cellular functions. However, the mechanisms for microgravity‐induced gene expression changes are not clear. The epigenetic changes of DNA methylation and chromatin histones modifications are known to regulate gene expression.
Kamaleshwar P, Singh +2 more
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Synthesis of 2D Porous Crystalline Materials in Simulated Microgravity
Advanced Materials, 2021David Rodríguez-San-Miguel +2 more
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