Results 1 to 10 of about 306,696 (351)

Evaluation of free-floating tracheal intubation in weightlessness via ice-pick position with a direct laryngoscopy and classic approach with indirect videolaryngoscopy [PDF]

npj Microgravity, 2023
Long duration spaceflights to the Moon or Mars are at risk for emergency medical events. Managing a hypoxemic distress and performing an advanced airway procedure such as oro-tracheal intubation may be complicated under weightlessness due to ergonomic ...
Séamus Thierry, François Jaulin, Clément Starck, Philippe Ariès, Jan Schmitz, Steffen Kerkhoff, Cécile Isabelle Bernard, Matthieu Komorowski, Tobias Warnecke, Jochen Hinkelbein   +9 more
doaj   +2 more sources

Choroidal circulation disturbance is an initial factor in outer retinal degeneration in rats under simulated weightlessness [PDF]

Frontiers in Physiology, 2023
Objective: Microgravity contributes to ocular injury yet the underlying mechanism remains unclear. This study aims to elucidate the mechanism behind choroidal circulation disorder and outer retinal degeneration in rats with simulated weightlessness ...
Yuxue Mu, Yuxue Mu, Dongyu Wei, Lilingxuan Yao, Xinyue Xu, Shaoheng Li, Ruidan Cao, Ruidan Cao, Tao Chen, Tao Chen, Zuoming Zhang   +10 more
doaj   +2 more sources

Effects of weightlessness on the cardiovascular system: a systematic review and meta-analysis [PDF]

Frontiers in Physiology
Background: The microgravity environment has a direct impact on the cardiovascular system due to the fluid shift and weightlessness that results in cardiac dysfunction, vascular remodeling, and altered Cardiovascular autonomic modulation (CAM ...
Rafaella Mendes Zambetta, Étore De Favari Signini, Gabriela Nagai Ocamoto, Gabriela Nagai Ocamoto, Aparecida Maria Catai, Nicoly Ribeiro Uliam, Emiliano Santarnecchi, Thiago Luiz Russo   +7 more
doaj   +2 more sources

Ginsenoside Reshapes Intestinal Microecology to Alleviate Microgravity Stress [PDF]

Drug Design, Development and Therapy
Yanli Wang,1,* Tian Chen,2,* Zhe Shi,3,* Lijinchuan Dong,1 Mengting Li,1 Bo Peng,1 Qi Li,1 Ruile Pan,4 Shuiming Xiao,1 Qing Yang,1 Ning Jiang,4 Xinmin Liu,4,5 Qin Hu,2 Ying Chen1 1Institute of Chinese Materia Medica, China Academy of Chinese ...
Wang Y, Chen T, Shi Z, Dong L, Li M, Peng B, Li Q, Pan R, Xiao S, Yang Q, Jiang N, Liu X, Hu Q, Chen Y   +13 more
doaj   +2 more sources

Human gut microbiome and metabolite dynamics under simulated microgravity [PDF]

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   +2 more sources

Alteration Of Cytoskeleton Morphology And Gene Expression In Human Breast Cancer Cells Under Simulated Microgravity [PDF]

Cell Journal, 2020
Objective Weightlessness simulation due to the simulated microgravity has been shown to considerably affect behavior of tumor cells. It is aim of this study to evaluate characteristics of human breast cancer cells in this scaffold- free 3D culture model.
Florian Strube, Manfred Infanger, Markus Wehland, Xenia Delvinioti, Alexander Romswinkel, Carlo Dietz, Armin Kraus   +6 more
doaj   +1 more source

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

Frontiers 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, Xia Pengju, Zhang Yongyi, Shi Qimeng, Lei Jun, Song Pengfei, Tan Zhiwen, Liu Hao, Chen Ze   +8 more
doaj   +1 more source

A gravity-independent powder-based additive manufacturing process tailored for space applications [PDF]

Additive Manufacturing Additive Manufacturing 47 (2021) 102349, 2021
The future of space exploration missions will rely on technologies increasing their endurance and self-sufficiency, including for manufacturing objects on-demand. We propose a process for handling and additively manufacturing powders that functions independently of the gravitational environment and with no restriction on feedstock powder flowability ...
arxiv   +1 more source

Experimental analysis and transient numerical simulation of a large diameter pulsating heat pipe in microgravity conditions [PDF]

International Journal of Heat and Mass Transfer, Elsevier, 2022, 187, pp.122532, 2022
A multi-parametric transient numerical simulation of the start-up of a large diameter Pulsating Heat Pipe (PHP) specially designed for future experiments on the International Space Station (ISS) are compared to the results obtained during a parabolic flight campaign supported by the European Space Agency.
arxiv   +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