Results 21 to 30 of about 7,041 (240)

Skeletal Responses to Spaceflight [PDF]

Advances in Space Biology and Medicine, 1991
The role of gravity in the determination of bone structure is elucidated by observations in adult humans and juvenile animals during spaceflight. The primary response of bone tissue to microgravity is at the interface of the mineral and matrix in the process of biomineralization.
E R, Morey-Holton, S B, Arnaud
openaire   +2 more sources

New Results From Galileo's First Flyby of Ganymede: Reconnection‐Driven Flows at the Low‐Latitude Magnetopause Boundary, Crossing the Cusp, and Icy Ionospheric Escape

Geophysical Research Letters, 2018
On 27 June 1996, the NASA Galileo spacecraft made humanity's first flyby of Jupiter's largest moon, Ganymede, discovering that it is the only moon known to possess an internally generated magnetic field. Resurrecting the original Galileo Plasma Subsystem
Glyn Collinson, William R. Paterson, Christopher Bard, John Dorelli, Alex Glocer, Menelaos Sarantos, Rob Wilson   +6 more
doaj   +1 more source

Vitamin K status in spaceflight and ground-based models of spaceflight [PDF]

Journal of Bone and Mineral Research, 2010
Abstract Bone loss is a well-documented change during and after long-duration spaceflight. Many types of countermeasures to bone loss have been proposed, including vitamin K supplementation. The objective of this series of studies was to measure change in vitamin K status in response to microgravity under a variety of spaceflight and ...
Zwart, Sara R, Booth, Sarah L, Peterson, James W, Wang, Zuwei, Smith, Scott M   +4 more
openaire   +2 more sources

Impact of spaceflight and artificial gravity on sulfur metabolism in mouse liver: sulfur metabolomic and transcriptomic analysis

Scientific Reports, 2021
Spaceflight induces hepatic damage, partially owing to oxidative stress caused by the space environment such as microgravity and space radiation. We examined the roles of anti-oxidative sulfur-containing compounds on hepatic damage after spaceflight.
Ryo Kurosawa, Ryota Sugimoto, Hiroe Imai, Kohei Atsuji, Koji Yamada, Yusuke Kawano, Iwao Ohtsu, Kengo Suzuki   +7 more
doaj   +1 more source

Nrf2 alleviates spaceflight-induced immunosuppression and thrombotic microangiopathy in mice

Communications Biology, 2023
Spaceflight-related stresses impact health via various body systems, including the haematopoietic and immune systems, with effects ranging from moderate alterations of homoeostasis to serious illness.
Ritsuko Shimizu, Ikuo Hirano, Atsushi Hasegawa, Mikiko Suzuki, Akihito Otsuki, Keiko Taguchi, Fumiki Katsuoka, Akira Uruno, Norio Suzuki, Akane Yumoto, Risa Okada, Masaki Shirakawa, Dai Shiba, Satoru Takahashi, Takafumi Suzuki, Masayuki Yamamoto   +15 more
doaj   +1 more source

The impact of dimensionality reduction of ion counts distributions on preserving moments, with applications to data compression

Frontiers in Astronomy and Space Sciences, 2023
The field of space physics has a long history of utilizing dimensionality reduction methods to distill data, including but not limited to spherical harmonics, the Fourier Transform, and the wavelet transform.
D. da Silva, D. da Silva, D. da Silva, C. Bard, J. Dorelli, M. Kirk, B. Thompson, J. Shuster, J. Shuster   +8 more
doaj   +1 more source

Preparation and properties of Mg-Nd-Zn-Zr rare earth magnesium alloy composite coatings

Cailiao gongcheng
To explore the effects of different surface treatment processes on the properties of rare earth magnesium alloys，this study employs Mg-Nd-Zn-Zr rare earth magnesium alloy as the research subject and conducts surface modification by using three processes：
NIE Jingjing, XIA Xianchao, SUN Jingli, YAO Wende, LI Jing, LIU Bo, WU Lili, ZOU Wenbing, WANG Kun, YUAN Yong   +9 more
doaj   +1 more source

Fundamentals of Anesthesiology for Spaceflight [PDF]

Journal of Cardiothoracic and Vascular Anesthesia, 2016
SPACE EXPLORATION BEYOND low Earth orbit has been termed as “exploration class space missions.” Such future missions may involve extended flights to the Moon, asteroids, or Mars and will most likely engage not only governmental space agencies but also the private sector, in what some have termed “the new space race.” During those missions, the risk for
Komorowski, M, Fleming, SF, Kirkpatrick, AK   +2 more
openaire   +3 more sources

Long-range DCS-Anya trajectory planning algorithm considering initial and terminal state constraints

Xibei Gongye Daxue Xuebao
In long-range Earth surface planning scenarios, the curvature of the spherical surface significantly influences trajectory planning. Addressing the problem of long-range spherical trajectory planning with initial and end-state constraints, a DCS-Anya ...
LIU Siyu, CAO Yitao, YANG Chuang, WANG Yifei, ZHANG Shunjia   +4 more
doaj   +1 more source

Effect of heat treatment on microstructure and properties of Mg-12Y-1Al alloy

Cailiao gongcheng
The microstructure of Mg-12Y-1Al alloy with solution treatment and aging treatment was studied by optical microscope, X-ray diffraction and scanning electron microscope.
NIE Jingjing, PAN Yue, YUAN Xing, XIA Xianchao, SUN Jingli, LI Yangxin, YING Tao, XIAO Lyu   +7 more
doaj   +1 more source