Results 131 to 140 of about 40,337 (302)

Decreased metabolism and increased tolerance to extreme environments in Staphylococcus warneri during long‐term spaceflight

MicrobiologyOpen, 2019
Many studies have shown that the space environment can affect bacteria by causing a range of mutations. However, to date, few studies have explored the effects of long‐term spaceflight (>1 month) on bacteria.
Po Bai, Bin Zhang, Xian Zhao, Diangeng Li, Yi Yu, Xuelin Zhang, Bing Huang, Changting Liu   +7 more
doaj   +1 more source

Thirty days of spaceflight does not alter murine calvariae structure despite increased Sost expression

Bone Reports, 2017
Previously our laboratory documented increases in calvaria bone volume and thickness in mice exposed to 15 days of spaceflight aboard the NASA Shuttle mission STS-131.
Timothy R. Macaulay, Jamila H. Siamwala, Alan R. Hargens, Brandon R. Macias   +3 more
doaj   +1 more source

Anesthetic Concerns of Spaceflight [PDF]

, 2000
William T. Norfleet
openalex   +1 more source

Targeted Nuclear Spallation from Moderator Block Design for a Ground-Based Space Radiation Analog [PDF]

arXiv, 2017
Current radiobiology studies on the effects of galactic cosmic ray radiation utilize mono-energetic beams, where the projected dose for an exploration mission is given using highly-acute exposures. This methodology does not replicate the multi-ion species and energies found in the space radiation environment, nor does it reflect the low dose-rate found
arxiv  

Gene and MicroRNA Expression Profile Changes in ISS Crewmembers Blood Samples [PDF]

In space, living organisms are exposed to multiple stress factors including microgravity and space radiation. For humans, these harmful environmental factors have been known to cause negative health impacts such as immune dysfunction.
Berres, Mark, Crucian, Brian, Feiveson, Alan, Krieger, Stephanie, Moreno-Villanueva, Maria, Rithidech, Kanokporn, Simpson, Richard, Splinter, Sandra, Wu, Honglu, Zhang, Ye   +9 more
core   +1 more source

Effects of spaceflight and thyroid deficiency on hindlimb development. I. Muscle mass and IGF-I expression [PDF]

, 2000
Gregory R. Adams, S. A. McCue, P. W. Bodell, Ming Zeng, K. M. Baldwin   +4 more
openalex   +1 more source

Applied-Field Magnetoplasmadynamic Thrusters for Deep Space Exploration [PDF]

arXiv
Recent advancements in the development of Applied-Field Magnetoplasmadynamic thrusters (AF-MPDTs) present themselves to be an increasingly promising propulsion technology for deep space exploration missions. Various entities, ranging from state-sponsored institutions to privately-owned startups, have developed AF-MPDTs across a wide range of power ...
arxiv  

Direct Contact Among Galactic Civilizations by Relativistic Interstellar Spaceflight [PDF]

, 1962
Direct contact among galactic populations by relativistic interstellar ...
Sagan, Carl
core   +1 more source

Configurational and system requirements for control of large space systems [PDF]

, 1982
Control of large space systems, modeling, and control difficulties are discussed. Ground based analysis of spaceflight data are presented to determine structural dynamics characteristics for the purpose of revising control laws, and to trim the surface ...
Taylor, L. W., Jr.
core   +1 more source

Bidirectional Human-AI Learning in Real-Time Disoriented Balancing [PDF]

arXiv
We present a real-time system that enables bidirectional human-AI learning and teaching in a balancing task that is a realistic analogue of disorientation during piloting and spaceflight. A human subject and autonomous AI model of choice guide each other in maintaining balance using a visual inverted pendulum (VIP) display.
arxiv