Results 81 to 90 of about 5,428 (326)

Aerospace medicine and biology: A continuing bibliography with indexes, supplement 190, February 1979 [PDF]

This bibliography lists 235 reports, articles, and other documents introduced into the NASA scientific and technical information system in January ...

core   +1 more source

Comparative Study of Experimental Methods for Measuring Thermal Properties of 100Cr6 Steel Powders

Advanced Engineering Materials, EarlyView.
This study investigates the thermal properties of 100Cr6 steel in both bulk and powder forms. Measuring the very low thermal conductivity typically exhibited by powders poses significant challenges. To address this, two novel measurement techniques—temperature gradient and finite laser pulse response—are introduced and evaluated by comparison with the ...
Junsheng Zhuo, Hagen P. Kohl, Dongmei Liu, Lisa Matthäus, Arne Bochmann, Aaron Berger, Sebastian Weber, Stefan Nolte, Stephanie Lippmann   +8 more
wiley   +1 more source

Effects of Weightlessness on Human Fluid and Electrolyte Physiology [PDF]

The changes that occur in human fluid and electrolyte physiology during the acute and adaptive phases of adaptation to spaceflight are summarized. A number of questions remain to be answered.
Johnson, Philip C., Jr., Leach, Carolyn S.   +1 more
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Mechanical Properties of Different Austenitic High‐Nitrogen Steel Grades Produced by Powder Mixtures

Advanced Engineering Materials, EarlyView.
The effect of nitrogen content on the mechanical properties of austenitic stainless steels is investigated using tailored powder metallurgical processing. Different PM routes, including additive manufacturing, enable controlled nitrogen uptake and complex geometries.
Felix Radtke, Louis Becker, Lars Schultze‐Schlutius, Anke Kaletsch, Jonathan Lentz, Sebastian Weber, Christoph Broeckmann   +6 more
wiley   +1 more source

USSR Space Life Sciences Digest, Issue 18 [PDF]

This is the 18th issue of NASA's USSR Life Sciences Digest. It contains abstracts of 50 papers published in Russian language periodicals or presented at conferences and of 8 new Soviet monographs.
Donaldson, P. Lynn, Garshnek, Victoria, Hooke, Lydia Razran, Rowe, Joseph, Teeter, Ronald   +4 more
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Microstructural Evolution and Mechanical Properties of a Medium‐Manganese Steel Manufactured by Laser‐Based Powder Bed Fusion of Metals

Advanced Engineering Materials, EarlyView.
Fe–12Mn–0.2C medium‐manganese steel is processed by laser‐based powder bed fusion of metals using blended as well as pre‐alloyed powder. Various scanning speeds are used to determine the influence of energy deposition rate on microstructure and mechanical properties.
Leoni Hübner, Bugra Köksal, Thomas Wegener, Christian Haase, Thomas Niendorf   +4 more
wiley   +1 more source

Biomedical research [PDF]

Biomedical problems encountered by man in space which have been identified as a result of previous experience in simulated or actual spaceflight include cardiovascular deconditioning, motion sickness, bone loss, muscle atrophy, red cell alterations ...

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Is the ICP pulse waveform P2/P1 ratio during -6° head-down tilt associated with relative VO2 peak? A non-invasive intracranial compliance monitoring approach

Brain and Spine
Background: Spaceflights influence intracranial compliance (ICC). P2/P1 ratio, from the intracranial pressure (ICP) waveform, provides information about ICC. Additionally, non-invasive methods for ICC monitoring are needed for spaceflights.
Rafaella Mendes Zambetta, Étore De Favari Signini, Aparecida Maria Catai, Thainá Cristina Ramos dos Santos, Eloisa Soares Michaliski, Ana Karoline Nazario, Gabriela Nagai Ocamoto, Gustavo Frigieri, Thiago Luiz Russo   +8 more
doaj  

Direct Natural and Artificial Aging of Aluminum Alloy AlSi10Mg After Laser Powder‐Bed Fusion

Advanced Engineering Materials, EarlyView.
Laser powder‐bed fusion of metals aluminum alloy AlSi10Mg has been directly aged. Artificial aging after natural aging is considered. The hardening potential is high for the top part of the samples as well as after short natural aging. The hardening potential is substantially reduced for the bottom part of the samples, as well as after natural aging of
Rabea Steuer, Benjamin Milkereit, Sigurd Wenner, Jette Broer, Florian Huber, Mirko Schaper, Olaf Kessler   +6 more
wiley   +1 more source

USSR Space Life Sciences Digest, issue 21 [PDF]

This is the twenty-first issue of NASA's USSR Space Life Sciences Digest. It contains abstracts of 37 papers published in Russian language periodicals or books or presented at conferences and of a Soviet monograph on animal ontogeny in weightlessness ...
Donaldson, P. Lynn, Garshnek, Victoria, Hooke, Lydia Razran, Rowe, Joseph   +3 more
core   +1 more source