Equipped with the latest gear and a thirst for adventure, mountaineers embrace the perils that come with conquering the world's highest peaks. Yet, even those who tread more cautiously at high altitudes are not immune from ...
Mar 2, 2024
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In patients with ST-segment elevation myocardial infarction (STEMI), the traditional Chinese medicine Tongxinluo, as an adjunctive therapy to guideline-directed treatment, is associated with significantly improved clinical ...
Oct 27, 2023
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Alberta men with elevated prostate-specific antigen (PSA) levels can now take a new blood test to determine their risk for clinically significant prostate cancer and potentially avoid an unnecessary biopsy.
Oct 6, 2023
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Optical coherence tomography (OCT)-guided percutaneous coronary intervention (PCI) leads to a larger minimum stent area but does not reduce the two-year rate of target vessel failure compared with angiography-guided PCI, ...
Aug 28, 2023
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Compared to those of us who live at sea level, the 2 million people worldwide who live above 4,500 meters (or 14,764 feet) of elevation—about the height of Mount Rainier, Mount Whitney, and many Colorado and Alaska peaks—have ...
Mar 7, 2023
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Coronary no-reflow phenomenon (NRP), a common adverse complication in patients with ST-segment elevation myocardial infarction (STEMI) treated by percutaneous coronary intervention (PCI), is associated with poor patient prognosis. ...
Feb 16, 2023
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Asundexian 50 mg administered to post-myocardial infarction patients inhibits factor XIa by more than 90% with no significant increase in bleeding, according to late breaking research presented in a Hot Line session on 28 ...
Aug 29, 2022
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As the new coronavirus vaccine rollout gathers speed, elevators will likely become a flash point for businesses hoping to reopen offices while sticking to social distancing.
Feb 17, 2021
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A urine test based on University of Michigan Rogel Cancer Center research could have avoided one third of unnecessary prostate cancer biopsies while failing to detect only a small number of cancers, according to a validation ...
Feb 11, 2021
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Do "self-cleaning" elevator buttons really work?
Dec 3, 2020
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The elevation of a geographic location is its height above a fixed reference point[citation needed], most commonly a reference geoid, a mathematical model of the Earth's sea level as an equipotential gravitational surface (see Geodetic system, vertical datum). Elevation, or geometric height, is mainly used when referring to points on the Earth's surface, while altitude or geopotential height is used for points above the surface, such as an aircraft in flight or a spacecraft in orbit, and depth is used for points below the surface.
Less commonly, elevation is measured using the center of the Earth as the reference point. Due to equatorial bulge, there is debate as to which of the summits of Mt. Everest or Chimborazo is at the higher elevation, as the Chimborazo summit is further from the Earth's center while the Mt. Everest summit is higher above mean sea level.
This text uses material from Wikipedia, licensed under CC BY-SA
