Results 31 to 40 of about 815,050 (359)
Enhanced Placental Mitochondrial Respiration in Tibetan Women at High Altitude
Frontiers in Physiology, 2021 Living at high altitudes is extremely challenging as it entails exposure to hypoxia, low temperatures, and high levels of UV radiation. However, the Tibetan population has adapted to such conditions on both a physiological and genetic level over 30,000 ...
Huifang Liu +12 more
doaj +1 more source
Cognitive function and mood at high altitude following acclimatization and use of supplemental oxygen and adaptive servoventilation sleep treatments. [PDF]
, 2019 Impairments in cognitive function, mood, and sleep quality occur following ascent to high altitude. Low oxygen (hypoxia) and poor sleep quality are both linked to impaired cognitive performance, but their independent contributions at high altitude remain
Anza-Ramirez, Cecilia +10 more
core +2 more sources
Frontiers in Physiology, 2017 Background: High-altitude headache (HAH) is a notably common disorder affecting the daily life of travelers ascending to high altitude. Hematological parameters are important clinical examinations for various diseases.
He Huang +18 more
doaj +1 more source
Indian Journal of Animal Sciences, 2022 The objective of this study was to explore the effect of Spirulina and Chlorella as a dietary supplement on the growth performance of broiler chicken at high altitude.
SWATI +6 more
doaj +1 more source
Frontiers in Molecular Neuroscience, 2017 Water intake reduction (anti-dipsogenic effects) under hypoxia has been well established, but the underlying reason remains unknown. Our previous report indicated that activated TRPV4 neurons in SFO are associated with anti-dipsogenic effects under ...
Qing-Yuan Huang +19 more
doaj +1 more source
Altitudes of a Tetrahedron and Traceless Quadratic Forms [PDF]
Amer. Math. Monthly 110 (2003), 679-693, 2013 It is well known that the three altitudes of a triangle are concurrent at the so-called orthocenter of the triangle. So one might expect that the altitudes of a tetrahedron also meet at a point. However, it was already pointed out in 1827 by the Swiss geometer Jakob Steiner (1796--1863) that the altitudes of a general tetrahedron are mutually skew, for
arxiv +1 more source
Spatiotemporal evolution of radio wave pump-induced ionospheric phenomena near the fourth electron gyroharmonic [PDF]
, 2007 On 12 November 2001, the European Incoherent Scatter (EISCAT) high-frequency (HF) radio wave transmitter facility, operating in O-mode at 5.423 MHz with 550 MW effective radiated power, produced artificial optical rings which appeared immediately at ...
Ashrafi, M. +3 more
core +1 more source
Journal of Advances in Modeling Earth Systems, 2018 Key developments have been made to the NCAR Whole Atmosphere Community Climate Model with thermosphere and ionosphere extension (WACCM‐X). Among them, the most important are the self‐consistent solution of global electrodynamics, and transport of O+ in ...
Han‐Li Liu +15 more
doaj +1 more source
An improved formula for standard hypoxia tolerance time (STT) to evaluate hypoxic tolerance in mice
Military Medical Research, 2018 Background Hypoxia is a primary cause of mountain sickness and a common pathological condition in patients with heart failure, shock, stroke, and chronic obstructive pulmonary disease (COPD).
Gang Xu +5 more
doaj +1 more source
IL-6/STAT3 Induced Neuron Apoptosis in Hypoxia by Downregulating ATF6 Expression
Frontiers in Physiology, 2021 Background: Neuron apoptosis, regulated by endoplasmic reticulum (ER) stress in the hippocampus, is an essential factor influencing the cognitive impairment induced by hypobaric hypoxia.
Simin Zhou +26 more
doaj +1 more source