Severinghaus-prinzip
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Severinghaus-prinzip
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WebSeveringhaus has served as NIH liaison to the National Academy of Sciences, National Research Council; as chairman of an NIH Study Section; and as editor of various journals. … Die Severinghaus-Elektrode ist eine pH-Elektrode, der eine Messkammer mit einem Puffer meist aus Natriumhydrogencarbonat NaHCO3 vorgeschaltet ist. Über eine gaspermeable Membran dringt Kohlenstoffdioxid aus dem Messgut entsprechend dem dort herrschenden Partialdruck in die Pufferlösung ein und verschiebt deren Dissoziationsgleichgewicht: Es stellt sich deshalb im Puffer nach einer kurzen Zeit ein pH-Wert ein, der gesetzmäßig von der …
WebSeveringhaus improved the design by adding a stirred cuvette in a thermostat. A discrepancy between the measured partial pressure of oxygen (pO 2 ) between blood samples and … WebSeveringhaus developed Stow's electrode, stabilizing it with a bicarbonate-salt solution and a spacer. The CO2 electrode concept had occurred to Gesell in 1925, but for measurement of gas only, and to Gertz and Loeschcke, who were unaware of the Stow-Severinghaus electrode, in 1958. The development of the CO2 electrode terminated the use of ...
WebA. F. Bradley, J. Severinghaus, M. Stupfel; Medicine. Journal of applied physiology. 1956; Human and canine serum carbonic acid pk' was shown to vary inversely with ph as well as with temperature. At ph 7.4 and 37.5°C the accepted value should be lowered from 6.10 to 6.09. The rise in pk... WebAls Messgrundlage dient ihm das Severinghaus-Prinzip. Die Messelektrode ist durch eine elektrolytgefüllte Kammer und eine gasdurchlässige Membran vom Messmedium …
Web27 Mar 1999 · The Severinghaus-type pCO2 electrode was miniaturized and batch-fabricated using semiconductor and micromachining techniques. Anodically grown …
WebDE19515065A1 DE1995115065 DE19515065A DE19515065A1 DE 19515065 A1 DE19515065 A1 DE 19515065A1 DE 1995115065 DE1995115065 DE 1995115065 DE … rossi geared motors ukWebFounded by John W. Severinghaus, MD, in 1958, the UCSF Hypoxia Research Laboratory is a leading center for the study of the effects of hypoxia on humans.The laboratory has focused on oxygen transport, oxygen measurement, and high-altitude physiology for more than 40 years. Studies done in San Francisco and at the University of California’s White Mountain … rossigh bayWeb7 Oct 2013 · This Stow-Severinghaus CO 2 electrode is now part of all blood gas analyzers. In 1957, I combined it with Leland Clark's polarographic O 2 electrode in a thermostat bath … rossi glow plugsWeb3 Apr 2006 · The Severinghaus or carbon dioxide electrode is a modified pH electrode in contact with sodium bicarbonate solution and separated from the blood specimen by a … story a lion and a mouseThe Severinghaus electrode is an electrode that measures carbon dioxide (CO2). It was developed by Dr. John W. Severinghaus and his technician A. Freeman Bradley in 1958. It utilizes a CO2-sensitive glass electrode in a surrounding film of bicarbonate solution covered by a thin plastic carbon dioxide permeable membrane, but impermeable to water and electrolytic solutes. The carbon dioxide pressure of a sample gas or liquid equilibrates through the membrane and th… storyallsWebThe surname Severinghaus is most common in The United States, where it is held by 135 people, or 1 in 2,684,881. In The United States Severinghaus is most prevalent in: … story all about the girlWeb1 Aug 2011 · The determination of dissolved CO(2) and HCO(3)(-) concentrations as well as the carbon dioxide production rate in mammalian cell suspension culture is attracting … ros sign and submit