Results 81 to 90 of about 7,105 (317)
Investigating the effect of zinc supplementation on preventing bone resorption in a weightlessness animal model: An experimental study [PDF]
فصلنامه ابن سیناBackground and aims: Bone biomarkers, such as bone-specific alkaline phosphatase (BAP) and osteocalcin (OC), are crucial for researching and monitoring the effects of therapeutic interventions.
Reza Eslami +2 more
doaj
Computer simulation of preflight blood volume reduction as a countermeasure to fluid shifts in space flight [PDF]
Fluid shifts in weightlessness may cause a central volume expansion, activating reflexes to reduce the blood volume. Computer simulation was used to test the hypothesis that preadaptation of the blood volume prior to exposure to weightlessness could ...
Charles, J. B. +2 more
core +1 more source
Advanced Engineering Materials, EarlyView.Unlocking structural efficiency, this work integrates homogenization‐based topology optimization with functionally graded triply periodic minimal surface lattices to create highly efficient, customizable lattice structures. Key achievements include the development of a versatile MATLAB framework, optimization of mechanical properties for additive ...
Mirhan Ozdemir +4 more
wiley +1 more source
NASA space biology accomplishments, 1982 [PDF]
Summaries of NASA's Space Biology Program projects are provided. The goals, objectives, accomplishments, and future plans of each project are described in this publication as individual technical ...
Halstead, T. W., Pleasant, L. G.
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Advanced Engineering Materials, EarlyView.This article investigates optimal processing conditions for the laser‐based powder bed fusion of WE43. To limit the interaction with remaining oxygen, a 3 vol% hydrogen admixture to the inert gas is investigated. Furthermore, heat treatments are investigated in the range of 250–350 °C for 48 h.
Arvid Abel +9 more
wiley +1 more source
Musculoskeletal discipline science plan [PDF]
Life sciences research in the musculoskeletal discipline must identify possible consequences of weightlessness on this system, understand the mechanisms of these effects, and develop effective and operationally practical countermeasures to protect ...
core +1 more source
Advanced Engineering Materials, EarlyView.This study explores aerosol jet‐printed (AJP) surface roughness, its effects on the performance of microwave electronics, and its process contributors. First, an electromagnetic model is vetted for AJP's unique roughness signature. Simulations are built which show process‐induced roughness is as significant as conductor resistivity in driving microwave
Christopher Areias, Alkim Akyurtlu
wiley +1 more source
Comparison of Microgravity Analogs to Spaceflight in Studies of Plant Growth and Development
Frontiers in Plant Science, 2019 Life on Earth has evolved under the influence of gravity. This force has played an important role in shaping development and morphology from the molecular level to the whole organism. Although aquatic life experiences reduced gravity effects, land plants
John Z. Kiss +6 more
doaj +1 more source
Do the design concepts used for the space flight hardware directly affect cell structure and/or cell function ground based simulations [PDF]
The use of clinostats and centrifuges to explore the hypogravity range between zero and 1 g is described. Different types of clinostat configurations and clinostat-centrifuge combinations are compared.
Chapman, David K.
core +1 more source
Advanced Engineering Materials, EarlyView.This study presents rapid evaluation methods for scan strategies in powder bed fusion (PBF) of polymers with a NIR laser as an example for its application. It uses line buffer‐based calculations and point density fields to predict the performance of four different scan strategies. The methods show promising results in laser‐based PBF of polymer samples,
Simon Leupold +9 more
wiley +1 more source