Results 261 to 270 of about 86,204 (314)
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SKELETAL CHANGES DURING SPACE FLIGHT
The Lancet, 1985L'absence de pesanteur amene des pertes de calcium. Un vol d'une duree de 3 mois provoque une perte ne depassant pas 2% du calcium corporel total, sans consequences a court terme, mais il se peut que des vols repetes amenent des decalcifications dangereuses a long terme et que l'hypercalciurie favorise la lithiase.
P C, Rambaut, A W, Goode
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Cardiovascular function in space flight
Acta Astronautica, 1991Changes in orthostatic heart rate have been noted universally in Soviet and U.S. crewmembers post space flight. The magnitude of these changes appears to be influenced by mission duration, with increasing orthostatic intolerance for the first 7-10 days of flight and then a partial recovery in the orthostatic heart rate response.
A E, Nicogossian +4 more
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Calbindins decreased after space flight
Endocrine, 1996Exposure of the body to microgravity during space flight causes a series of well-documented changes in Ca2+ metabolism, yet the cellular and molecular mechanisms leading to these changes are poorly understood. Calbindins, vitamin D-dependent Ca2+ binding proteins, are believed to have a significant role in maintaining cellular Ca2+ homeostasis.
I N, Sergeev, W B, Rhoten, M D, Carney
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AIBS Bulletin, 1962
THE accomplishment of a manned lunar landing will involve manned spacecraft, powerful boosters, complex rendezvous operations in space, world-wide communication and tracking networks, and gigantic production and launch facilities. The programs for such an endeavor are well underway.
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THE accomplishment of a manned lunar landing will involve manned spacecraft, powerful boosters, complex rendezvous operations in space, world-wide communication and tracking networks, and gigantic production and launch facilities. The programs for such an endeavor are well underway.
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Journal of Jet Propulsion, 1957
Table 1 Fusion reactions 1) D -f D -+ He + n + 3.25 Mev 2) D + D — T + p + 4 Mev 3) T + D -» He + n + 17.6 Mev 4) He + D -> He + p + 18.3 Mev 5) Li« + D _^ 2He + 22.4 Mev 6) Li + p — 2He + 17.3 Mev S research proj ects on nuclear fusion are under way in this country and, no doubt, similar efforts are taking place elsewhere in the world.
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Table 1 Fusion reactions 1) D -f D -+ He + n + 3.25 Mev 2) D + D — T + p + 4 Mev 3) T + D -» He + n + 17.6 Mev 4) He + D -> He + p + 18.3 Mev 5) Li« + D _^ 2He + 22.4 Mev 6) Li + p — 2He + 17.3 Mev S research proj ects on nuclear fusion are under way in this country and, no doubt, similar efforts are taking place elsewhere in the world.
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Proceedings of the Human Factors Society Annual Meeting, 1986
An overview of manned space flight is given. This describes the key goals and achievements of the space programs of the United States and of the Soviet Union. The importance of the “Man” in manned space flight is emphasized. Human factors are shown to have played an ever increasing role in the design of manned space craft.
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An overview of manned space flight is given. This describes the key goals and achievements of the space programs of the United States and of the Soviet Union. The importance of the “Man” in manned space flight is emphasized. Human factors are shown to have played an ever increasing role in the design of manned space craft.
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Neuroplasticity changes during space flight
Advances in Space Research, 2003Neuroplasticity refers to the ability of neurons to alter some functional property in response to alterations in input. Most of the inputs received by the brain and thus the neurons are coming from the overall sensory system. The lack of gravity during space flight or even the reduction of gravity during the planned Mars missions are and will change ...
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1992
Abstract Ever since Gagarin’s first flight in 1961, the world has not wanted for critics who demanded to know what good could come from sending people into space. What is perhaps not so well known is that these critics exist equally within the space community.
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Abstract Ever since Gagarin’s first flight in 1961, the world has not wanted for critics who demanded to know what good could come from sending people into space. What is perhaps not so well known is that these critics exist equally within the space community.
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Responsive materials architected in space and time
Nature Reviews Materials, 2022Xiaoxing Xia +2 more
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The biofilm matrix: multitasking in a shared space
Nature Reviews Microbiology, 2022Hans-Curt Flemming +2 more
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