Results 91 to 100 of about 25,553 (263)

Microgravity‐induced changes in skeletal muscle and possible countermeasures: What we can learn from bed rest and human space studies

Experimental Physiology, EarlyView.
Abstract Despite exercise countermeasures to sustain health and performance in spaceflight, complete maintenance of muscle mass and functions in microgravity is still not possible for most astronauts. The principal cause of the limited effectiveness of existing exercise countermeasures is the difficulty in achieving full loading forces in space.
Alessandra Bosutti, Bergita Ganse, Nicola A. Maffiuletti, Rob C. I. Wüst, Gustav J. Strijkers, Andy Sanderson, Hans Degens   +6 more
wiley   +1 more source

The Role of C-X-C Chemokine Receptor Type 4 (CXCR4) in Cell Adherence and Spheroid Formation of Human Ewing’s Sarcoma Cells under Simulated Microgravity [PDF]

, 2019
Alexander Romswinkel, Manfred Infanger, Carlo Dietz, Florian Strube, Armin Kraus   +4 more
openalex   +1 more source

Evaporation of Nanofluid Sessile Droplets Under Marangoni and Buoyancy Effects: Internal Convection and Instability

Nanomaterials
Previous research has studied the evolution of patterns during the evaporation of sessile droplets of pure liquid, although there is a lack of reports focusing on the transition of flow regimes and flow stability of nanofluids.
Yuequn Tao, Zhiqiang Zhu
doaj   +1 more source

Entering "A NEW REALM" of KIBO Payload Operations - Continuous efforts for microgravity experiment environment and lessons learned from real time experiment operations in KIBO - [PDF]

, 2011
K Sakagami, Masayuki Goto, Shuichi Matsumoto, Hayato Ohkuma   +3 more
openalex   +1 more source

The effect of bed rest, unilateral limb immobilization and head‐down tilt on muscle protein synthesis: A systematic review and meta‐analysis

Experimental Physiology, EarlyView.
Abstract Muscle disuse leads to muscle atrophy and a decrease in muscle function that is primarily driven by reduced muscle protein synthesis (MPS). The aim of this systematic review and meta‐analysis was to examine the effect of different models of muscle disuse on rates of MPS.
Konstantinos Prokopidis, Paul T. Morgan, Colleen S. Deane, Oliver C. Witard, David D. Church   +4 more
wiley   +1 more source

Temporary effects of random positioning on the function and plasticity of proliferating monocytes

Scientific Reports
The Random Positioning Machine (RPM) is used in the field of gravitational biology and space medicine. Rotational bioreactors such as the RPM create dynamic suspension cultures, providing shear stress, a crucial factor in circulatory homeostasis, but ...
Shannon Marchal, Anna Dittrich, Nadine Becker, Katrin Vogel, Lisette Fickenscher, José Luis Cortés Sánchez, Stefan Kahlert, Rasika Murkar, Daniela Grimm, Marcus Krüger   +9 more
doaj   +1 more source

Commuting by bicycle (vs. by car) is associated with improved aerobic power, microvascular function and diminished CO2 output in the atmosphere

Experimental Physiology, EarlyView.
Abstract The study investigated whether bicycle compared with car commuting, over relatively small distances, has positive effects on physiological variables, cardiometabolic fitness and CO2 output in the atmosphere. Bike Commuters (11 M, 15 F; age [median value (interquartile range)] 51.5 (38.3–56.8) years; body mass index [BMI] 22.8 (21.0–24.1) kg m ...
Caterina Ursella, Giovanni Baldassarre, Lucrezia Zuccarelli, Federica Caponnetto, Francesco Curcio, Mattia D'Alleva, Maria De Martino, Elisabetta Fontanini, Andrea Palomba, Antonio Paolo Beltrami, Federico Formenti, Bruno Grassi   +11 more
wiley   +1 more source

Research on Landing Dynamics of Foot-High Projectile Body for High-Precision Microgravity Simulation System

Actuators
A high-precision ground microgravity simulation environment serves as the prerequisite and key to studying landing dynamics in microgravity environments.
Zhenhe Jia, Yuehua Li, Weijie Hou, Libin Zang, Qiang Han, Baoshan Zhao, Bin Gao, Haiteng Liu, Yuhan Chen, Yumin An, Huibo Zhang   +10 more
doaj   +1 more source

Non-Keplerian Charged Accretion Disk Orbiting a Black Hole Pulsar

Universe
Recent studies have focused on how spinning black holes (BHs) within a binary system containing a strongly magnetized neutron star, then immersed in external magnetic fields, can acquire charge through mechanisms like the Wald process and how this charge
Audrey Trova, Eva Hackmann
doaj   +1 more source

NEX4EX – A novel exercise device enabling resistive, plyometric and sensorimotor training during deep‐space missions: A case report

Experimental Physiology, EarlyView.
Abstract During weightlessness, the human neuro–muscular–skeletal system undergoes maladaptation to the microgravity environment. The European Space Agency (ESA) project NEX4EX, ‘Novel Exercise Hardware for Exploration’, developed an advanced multipurpose exerciser offering resistive (RES), plyometric (PLYO) and sensorimotor (SENSO) exercises.
Jonas Böcker, Jochen Zange, Markus Gruber, Guillaume Fau, Rainer Rawer, Sören Törholm, Arnaud Runge, Jörn Rittweger   +7 more
wiley   +1 more source