Valuable clinical and physiological data concerning the function of the cardiopulmonary system can be obtained from continuous monitoring of hemoglobin oxygen saturation (SaO2), oxygen tension (PO2), and carbon dioxid...
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Valuable clinical and physiological data concerning the function of the cardiopulmonary system can be obtained from continuous monitoring of hemoglobin oxygen saturation (SaO2), oxygen tension (PO2), and carbon dioxide tension (PCO2) in blood. While periodic blood sampling is still used clinically to determine arterial blood gases, it is becoming apparent that the recent introduction of continuous noninvasive monitoring of blood gases can offer many advantages. This paper discusses the historical development and significant accomplishments of various techniques available for transcutaneous blood gas monitoring. Four major areas are reviewed: electrochemistry, spectrophotometry, mass spectrometry, and gas chromatography. For each of these techniques, the theoretical basis, instrumentation, and clinical applications are discussed.
The Geselowitz relationship, valid only for volumes of fixed geometry and static or quasi-static sources, is extended to volumes of fluctuating geometry and nonquasi-static sinusoidal sources. The special case of fila...
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The Geselowitz relationship, valid only for volumes of fixed geometry and static or quasi-static sources, is extended to volumes of fluctuating geometry and nonquasi-static sinusoidal sources. The special case of filamentous sinusoidal sources is considered and the Geselowitz relationship is regained for the case of a fixed volume conductor in a quasi-static or static field.
作者：
SMITH, C.O.THE AUTHOR received a B. S. in Mechanical Engineering from Worcester Polytechnic Institute in 1941
an S. M. in Mechanical Engineering from Massachusetts Institute of Technology in 1947 and a Sc. D. in Metallurgy from M. I. T. in 1951. He served in the Navy during World War II in aviation maintenance. He currently holds the rank of Lieutenant Commander USNR and is active in the reserve program of the Office of Naval Research. He has seven years teaching experience at WPI and MIT and was associated with Alcoa Research Laboratories for three and one-half years. He currently is Lecturer in Reactor Materials at the Oak Ridge School of Reactor Technology.
作者：
CARRISON, D.A.SMITH, C.O.Donald A. Carrison received a B. S. degree from the University of Illinois and did graduate work in Physics
Mathematics and Engineering at the University of California at Los Angeles. He was a Staff Member in Training at the Oak Ridge School of Reactor Technology prior to joining the Director's Division at the Oak Ridge National Laboratory as a Senior Physicist with a group investigating an advanced reactor concept. Since May of 1957 he has been a member of the senior staff of Aeronutronic Systems Inc. a Ford Motor Co. subsidiary in Glendale Calif. Charles O. Smith received a B.S. in Mech. Eng. from Worcester Polytechnic Institute
a S. M. in Mech. Eng. from Massachusetts Institute of Technology and a Sc.D. in Metallurgy from Massachusetts Institute of Technology. He served in the Navy during World War II in aviation maintenance. He currently holds the rank of Lieutenant Commander USNR and is active in the reserve program of the Office of Naval Research. He has seven years teaching experience at WPI and MIT and was associated with Alcoa Research Laboratories for three and one-half years as a Research Engineer. He currently is Lecturer in Reactor Materials at the Oak Ridge School of Reactor Technology at the Oak Ridge National Laboratory.
作者：
SMITH, C.O.The author received a B.S. in Mechanical Engineering from Worcester Polytechnic Institute
a S.M. in Mechanical Engineering from Massachusetts Institute of Technology and a Sc.D. in Metallurgy from Massachusetts Institute of Technology. He served in the Navy during World War II in aviation maintenance. He currently holds the rank of Commander USNR and is active in the reserve program of the Office of Naval Research. He has seven years teaching experience at Worcester Polytchnic Institute and MIT and was associated with Alcoa Research Laboratories for three and one-half years as a Research Engineer. He currently is Lecturer in Reactor Materials and in Stress Analysis at the Oak Ridge School of Reactor Technology at the Oak Ridge National Laboratory.
The concept of the effect of temperature and temperature gradients in developing thermal stresses and strains is presented and discussed. Equations for the general case are developed and applied to the specific case o...
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