Results 31 to 40 of about 2,657 (184)

Predicting motion sickness during parabolic flight [PDF]

open access: yesAutonomic Neuroscience, 2002
There are large individual differences in susceptibility to motion sickness. Attempts to predict who will become motion sick have had limited success. In the present study, we examined gender differences in resting levels of salivary amylase and total protein, cardiac interbeat intervals (R-R intervals), and a sympathovagal index and evaluated their ...
Deborah L, Harm, Todd T, Schlegel
openaire   +2 more sources

Venous and Arterial Responses to Partial Gravity

open access: yesFrontiers in Physiology, 2020
Introduction: Chronic exposure to the weightlessness-induced cephalad fluid shift is hypothesized to be a primary contributor to the development of spaceflight-associated neuro-ocular syndrome (SANS) and may be associated with an increased risk of venous
Stuart M. C. Lee   +8 more
doaj   +1 more source

Lipid Signalling in Human Immune Response and Bone Remodelling under Microgravity

open access: yesApplied Sciences, 2020
Since the first Apollo mission in 1969, microgravity has been linked to many alterations of astronauts’ physiology, among which immunosuppression, altered inflammation and bone loss represent relevant examples.
Marina Fava   +2 more
doaj   +1 more source

Spatial Updating Depends on Gravity

open access: yesFrontiers in Neural Circuits, 2020
As we move through an environment the positions of surrounding objects relative to our body constantly change. Maintaining orientation requires spatial updating, the continuous monitoring of self-motion cues to update external locations.
Alexander Christoph Stahn   +11 more
doaj   +1 more source

Box–Behnken optimization and ANN‐ANFIS integrated modelling for transesterification using thermally activated basic oxygen furnace slag catalyst

open access: yesThe Canadian Journal of Chemical Engineering, EarlyView.
Abstract Global energy demand and environmental concerns have intensified the search for renewable and sustainable energy sources. This study thus, focuses on optimizing the transesterification process of waste cooking oil (WCO) using thermally activated basic oxygen furnace slag catalyst calcined at 850°C (BOF 850). The optimization and modelling were
Johra S. Ali, Hillary L. Rutto
wiley   +1 more source

SHS for Space Exploration

open access: yesEurasian Chemico-Technological Journal, 2013
For over past years, interest of leading space agencies (NASA, JAXA, ESA, RSA, etc.) in SHS experiments under microgravity conditions has been increasingly growing.
A. E. Sytschev   +5 more
doaj   +1 more source

Plasmakristall‐4 Experiment: 10 Years of Operation in Orbit

open access: yesContributions to Plasma Physics, EarlyView.
ABSTRACT Plasmakristall‐4 (PK‐4) is a microgravity complex plasma laboratory operated for 10 years on board the International Space Station. Its main purpose is the particle‐resolved investigation of generic condensed matter phenomena using strongly coupled suspensions of microparticles immersed in low‐pressure gas‐discharge plasmas.
M. Pustylnik   +3 more
wiley   +1 more source

Acute and short-term fluctuations in gravity are associated with changes in circulatory plasma protein levels

open access: yesnpj Microgravity
Gravitational changes between micro- and hypergravity cause several adaptations and alterations in the human body. Besides muscular atrophy and immune system impairment, effects on the circulatory system have been described, which can be associated with ...
Alexander Lang   +12 more
doaj   +1 more source

Comprehensive Analysis of Macrocirculation and Microcirculation in Microgravity During Parabolic Flights

open access: yesFrontiers in Physiology, 2020
BackgroundProfound knowledge about cardiovascular physiology in the setting of microgravity can help in the course of preparations for human space missions.
Nana-Yaw Bimpong-Buta   +8 more
doaj   +1 more source

Water Electrolysis Technologies for Extraterrestrial Water Resource Conversion

open access: yesEcoEnergy, EarlyView.
This paper reviews four water electrolysis technologies for extraterrestrial water conversion: alkaline water electrolysis, proton exchange membrane water electrolysis, solid oxide water electrolysis, and anion exchange membrane water electrolysis. It elaborates on their mechanisms, components, and integration, highlighting challenges such as water ...
Yawen Jiang   +6 more
wiley   +1 more source

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