Results 11 to 20 of about 20,184 (348)

Choroidal circulation disturbance is an initial factor in outer retinal degeneration in rats under simulated weightlessness [PDF]

open access: yesFrontiers in Physiology, 2023
Objective: Microgravity contributes to ocular injury yet the underlying mechanism remains unclear. This study aims to elucidate the mechanism behind choroidal circulation disorder and outer retinal degeneration in rats with simulated weightlessness ...
Yuxue Mu   +10 more
doaj   +2 more sources

Formaldehyde initiates memory and motor impairments under weightlessness condition [PDF]

open access: yesnpj Microgravity
During space flight, prolonged weightlessness stress exerts a range of detrimental impacts on the physiology and psychology of astronauts. These manifestations encompass depressive symptoms, anxiety, and impairments in both short-term memory and motor ...
Tianhao Mei   +8 more
doaj   +2 more sources

Effects of weightlessness on the cardiovascular system: a systematic review and meta-analysis [PDF]

open access: yesFrontiers in Physiology
Background: The microgravity environment has a direct impact on the cardiovascular system due to the fluid shift and weightlessness that results in cardiac dysfunction, vascular remodeling, and altered Cardiovascular autonomic modulation (CAM ...
Rafaella Mendes Zambetta   +7 more
doaj   +2 more sources

Müller cells are activated in response to retinal outer nuclear layer degeneration in rats subjected to simulated weightlessness conditions [PDF]

open access: yesNeural Regeneration Research
A microgravity environment has been shown to cause ocular damage and affect visual acuity, but the underlying mechanisms remain unclear. Therefore, we established an animal model of weightlessness via tail suspension to examine the pathological changes ...
Yuxue Mu   +9 more
doaj   +2 more sources

Osteocytes and Weightlessness [PDF]

open access: yesCurrent Osteoporosis Reports, 2021
Abstract Purpose of Review Osteocytes are considered to be the cells responsible for mastering the remodeling process that follows the exposure to unloading conditions. Given the invasiveness of bone biopsies in humans, both rodents and in vitro culture systems are largely adopted as models for studies in space missions ...
Donata Iandolo   +3 more
openaire   +4 more sources

The Weightless Economy in Economic Development [PDF]

open access: green, 2001
AbstractWhile the notion that knowledge plays no small part in economic growth may be perceived to be both old and new, this chapter encounters a seemingly different claim that asserts how knowledge is important not only in terms of science, R&D, and education, but because the national income has experienced significant increases through knowledge ...
Danny Quah
openalex   +5 more sources

The Effects of Chronic Weightlessness on Limited of Stability and Dynamic Balance in ‎Breath-hold and SCUBA Divers [PDF]

open access: yesJournal of Paramedical Science and Rehabilitation, 2022
Purpose:Water immersion built a new environment in which weightlessness puts unknown demand on somatosensory system such as altered sensory integration due to the improper proprioception afferent. This condition can lead to an imprecise function of human
R Sanadgol, M Akoochakian, M.H Alizadeh
doaj   +1 more source

Micro-CT Study of Mongolian Gerbil Humeral Bone After Prolonged Spaceflight Based on a New Algorithm for Delimitation of Long-Bone Regions

open access: yesFrontiers in Physiology, 2021
The Mongolian gerbil displays unique physiological and anatomical features that make this species an attractive object for biological experiments in space.
Yuri S. Krivonosov   +8 more
doaj   +1 more source

Brain potential responses involved in decision-making in weightlessness

open access: yesScientific Reports, 2022
The brain is essential to human adaptation to any environment including space. We examined astronauts’ brain function through their electrical EEG brain potential responses related to their decision of executing a docking task in the same virtual ...
A. M. Cebolla   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy