Results 11 to 20 of about 1,315 (237)

Human gut microbiome and metabolite dynamics under simulated microgravity

Gut 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, Lucia Grenga, Sven-Bastiaan Haange, Alexandra Himmelmann, Franca Sabine Arndt, Yen-Tran Ly, Guylaine Miotello, Olivier Pible, Nico Jehmlich, Beatrice Engelmann, Martin von Bergen, Edwin Mulder, Petra Frings-Meuthen, Christine Elisabeth Hellweg, Jens Jordan, Ulrike Rolle-Kampczyk, Jean Armengaud, Ralf Moeller   +17 more
doaj   +1 more source

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

Digital 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, Chen Ying, Hu Qin, Bao Yu, Pan Ruile, Zeng Guirong, Peng Bo, Liu Xinmin, Shi Zhe   +8 more
doaj   +1 more source

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

Acta 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, José Batista Volpon   +1 more
doaj   +1 more source

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

Zdorovʹe 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, A.N. Mozhayeva, G.N. Kuzmenko, T.V. Chasha   +3 more
doaj   +1 more source

Validation of Material Algorithms for Femur Remodelling Using Medical Image Data

Applied 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, Xingquan Shen, Xin Bai, Jing Bai, Jianning Han, Yu Shang   +5 more
doaj   +1 more source

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

Frontiers 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, Tatiana Shigueva, Dimitry Sayenko, Ilya Rukavishnikov, Inessa Kozlovskaya   +4 more
doaj   +1 more source

Motion control research of underwater spherical robot

Systems 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

Weightlessness and cardiac rhythm disorders: current knowledge from space flight and bed-rest studies

Frontiers in Astronomy and Space Sciences, 2016
Isolated episodes of heart rhythm disorders have been reported during 40 years of space flight, triggering research to evaluate the risk of developing life-threatening arrhythmias induced by prolonged exposure to weightlessness.
Enrico Gianluca Caiani, Alba Martin-Yebra, Alba Martin-Yebra, Federica Landreani, Juan Bolea, Juan Bolea, Pablo Laguna, Pablo Laguna, Pierre Vaïda   +8 more
doaj   +1 more source

Microgravity simulation by diamagnetic levitation: effects of a strong gradient magnetic field on the transcriptional profile of Drosophila melanogaster

BMC Genomics, 2012
Background Many biological systems respond to the presence or absence of gravity. Since experiments performed in space are expensive and can only be undertaken infrequently, Earth-based simulation techniques are used to investigate the biological ...
Herranz Raul, Larkin Oliver J, Dijkstra Camelia E, Hill Richard JA, Anthony Paul, Davey Michael R, Eaves Laurence, van Loon Jack JWA, Medina F Javier, Marco Roberto   +9 more
doaj   +1 more source

Conserved binding mode but diverse interfaces of MreC‐PBP2 interactions

FEBS Letters, EarlyView.
The crystal structure of abMreC reveals a conserved two β‐barrel architecture and provides structural insights into its role within the bacterial elongasome. The abMreC–abPBP2 complex model identifies the molecular basis of MreC‐mediated PBP2 recognition, contributing to the regulation of peptidoglycan synthesis.
Hyunseok Jang, Hyo Been Jin, Chang Min Kim, So Yeon Lee, Hyun Ho Park   +4 more
wiley   +1 more source