Results 61 to 70 of about 4,869 (218)

Differential intestinal injury and unchanged systemic inflammatory responses to leg and whole‐body passive hyperthermia in healthy humans

open access: yesExperimental Physiology, EarlyView.
Abstract Hyperthermia can cause intestinal injury, facilitating endotoxin translocation and an inflammatory response that has been associated with heat illness. However, the potential occurrence of these responses has been incompletely reported during passive hyperthermia, and the independent effect of hyperthermia is equivocal.
Oliver R. Gibson   +3 more
wiley   +1 more source

Extreme-temperature oxidation behavior of nickel-based superalloys up to 1345 °C and the magnetic properties of their oxide layers

open access: yesMaterials & Design
The high-temperature oxidation behavior of DD6 and DD9 alloys at 1050, 1200, and 1345 °C for 5 h, together with the magnetic properties of the resulting oxide layers, was thoroughly investigated.
Yidie Tan   +6 more
doaj   +1 more source

The Study of Hypergravity and Flight Stress on Different Cell Lines Function in Sounding Rocket [PDF]

open access: yesفصلنامه علوم و فناوری فضایی, 2014
Stress environment of space flights including hypergravity and microgravity effect cell functions and processes. We studied effect of hypergravity and flight stress on function, death, growth and cellular damage of five cell lines including human ...
Z. Hajebrahimi   +5 more
doaj  

The application of artificial gravity in medicine and space

open access: yesFrontiers in Physiology, 2022
Gravity plays a crucial role in physiology. The lack of gravity, like in long duration spaceflight missions, cause pathologies in e.g., the musculoskeletal system, cardiovascular deconditioning, immune system deprivation or brain abnormalities, to just ...
Eugenia Isasi   +4 more
doaj   +1 more source

Theoretical model of interstitial diffusion in solid solution under hypergravity conditions

open access: yesAIP Advances
Diffusion of atoms and molecules is usually driven by concentration gradients, with the influence of gravitational energy being negligible. However, for alloying components operating at exceptional rotational speeds, such as engine blades, the resulting ...
Changyou Li   +3 more
doaj   +1 more source

Acceleration Profiles and Processing Methods for Parabolic Flight

open access: yes, 2017
Parabolic flights provide cost-effective, time-limited access to "weightless" or reduced gravity conditions experienced in space or on planetary surfaces, e.g. the Moon or Mars.
Bhattaru, Srinivasa A.   +5 more
core   +1 more source

Towards Hypergravity

open access: yes, 1999
The aim of this paper is to discuss a kinematical algebraic structure of a theory of gravity, that would be unitary, renormalizable and coupled in the same manner to both spinorial and tensorial matter fields. An analysis of the common features as well as differences of the Yang-Mills theories and gauge theories of gravity is carried out. In particular,
openaire   +2 more sources

Modulation of cerebral blood flow and cognition by hyperthermia and hypoxia: An electroencephalographic event‐related potentials perspective

open access: yesExperimental Physiology, EarlyView.
Abstract Cerebral blood flow (CBF) is essential for sustaining neuronal metabolism and cognitive performance; however, the precise relationship between perfusion and cognition remains unclear. Although ageing and disease are associated with progressive declines in CBF and cognitive impairment, the acute effects of altered CBF under environmental ...
Hiroki Nakata   +2 more
wiley   +1 more source

Exposure of mouse to high gravitation forces induces long-term potentiation in the hippocampus. [PDF]

open access: yes, 2004
The central nervous system is highly plastic and has been shown to undergo both transient and chronic adaptive changes in response to environmental influences.
Ishii, Masamitsu   +3 more
core   +1 more source

Brain strain: Blood flow and metabolism in environmental extremes

open access: yesExperimental Physiology, EarlyView.
Abstract This narrative review compares and contrasts the most commonly encountered environmental stressors on human cerebrovascular functioning. From high altitude and space, extreme apnoea, heat and cold stress, the impact of these stressors on the regulation of cerebral blood flow (CBF) and oxygen metabolism (CMRO2${\mathrm{CM}}{{\mathrm{R}}_ ...
Dario Vrdoljak   +3 more
wiley   +1 more source

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