IRE transactions on bio-medical electronics最新文献_第8页

Cardiac Dye Injector Synchronizer 心脏染料注射器同步器

IRE transactions on bio-medical electronics Pub Date : 1961-04-01 DOI: 10.1109/TBMEL.1961.4322871

L. Pengelly

引用次数: 1

The Normal Fetal Electrocardiogram, with a Pro-Posed System of Standardized Terminology 正常胎儿心电图，与标准化术语提出系统

IRE transactions on bio-medical electronics Pub Date : 1961-04-01 DOI: 10.1109/TBMEL.1961.4322876

S. Larks, R. Abdul-karim

引用次数: 3

Some Techniques in Polarography 极谱法中的一些技术

IRE transactions on bio-medical electronics Pub Date : 1961-04-01 DOI: 10.1109/TBMEL.1961.4322872

L. Katz, E. Gagnon

引用次数: 0

A Theoretical Basis for Determining Heart-Lead Relationships of the Equivalent Cardiac Multipole 确定等效心脏多极心导关系的理论基础

IRE transactions on bio-medical electronics Pub Date : 1961-04-01 DOI: 10.1109/TBMEL.1961.4322877

D. Brody, J. Bradshaw, John W. Evans

引用次数: 43

The Transmission of Red and Infrared Light through the Human Ear 红色和红外光通过人耳的传输

IRE transactions on bio-medical electronics Pub Date : 1961-04-01 DOI: 10.1109/TBMEL.1961.4322875

N. M. Anderson, P. Sekelj, M. Mcgregor

引用次数: 3

Random selection system for automatic biochemical analysis-partial functional analysis 用于自动生化分析的随机选择系统-部分功能分析

IRE transactions on bio-medical electronics Pub Date : 1961-04-01 DOI: 10.1109/TBMEL.1961.4322867

R. Jonnard

{"title":"Random selection system for automatic biochemical analysis-partial functional analysis","authors":"R. Jonnard","doi":"10.1109/TBMEL.1961.4322867","DOIUrl":"https://doi.org/10.1109/TBMEL.1961.4322867","url":null,"abstract":"Interconvertibility of certain engineering units and time-motion studies leads to simplifications in simulating the chemist's performance. The system described utilizes a carrier stream into which samples and reagents are injected at controlled intervals. Reactions proceed in transit. Normalization results in replacing volume measurements by time, durations by distances and concentrations by rates of mass flow. Thus, all variables are controllable by means of timers. The system incorporates a plurality of special plug-in units (pumps, mixers, sampler). Each operating module includes a multicam timer programer. The modules may be arranged in series-parallel arrays. The system is pulse-operated from a random-access keyboard, so that a time-sharing programing method is possible. Setting of the measuring devices (colorimeter, pH-meter, etc.) for sensitivity, scale span and wave length is automatic. A unique amplifier is utilized. Data logging is conventional. Performance analysis by application of the Sampling Theorem is useful in optimizing the operations. Examples dealing with urine color, albumin, glucose and nonglucose reducers by the peroxidase method, blood RBC and hemoglobin are described.","PeriodicalId":86470,"journal":{"name":"IRE transactions on bio-medical electronics","volume":"38 1","pages":"83-98"},"PeriodicalIF":0.0,"publicationDate":"1961-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/TBMEL.1961.4322867","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"62991969","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Application of Continuous Automatic Colorimetry in Medical Research 连续自动比色法在医学研究中的应用

IRE transactions on bio-medical electronics Pub Date : 1961-04-01 DOI: 10.1109/TBMEL.1961.4322868

J. M. Kelly

{"title":"Application of Continuous Automatic Colorimetry in Medical Research","authors":"J. M. Kelly","doi":"10.1109/TBMEL.1961.4322868","DOIUrl":"https://doi.org/10.1109/TBMEL.1961.4322868","url":null,"abstract":"A recent development of interest in analytical instrumentation provides a system for the continuous automatic determination of a wide variety of biochemically important compounds by colorimetry. The system is controlled by a multichannel, peristaltic proportioning pump which accurately delivers fixed volume ratios of samples and reagents to other components. Purification or separation of the constituent to be analyzed is effected by continuous dialysis and, after appropriate chemical treatment, optical density is measured in a ratio-recording dual beam colorimeter fitted with a flow curette. The system can analyze different samples on a continuous basis or monitor changes in a continuous sample stream. Operations require a minimum of technical attendance. The system has application in many areas of medical research: routine determination of classical clinical constituents for diagnosis and treatment; study of chemical pharmacology in vivo and in vitro; biochemical aspects of proteins, amino acids, and enzymes; organ and tissue perusal studies in physiology; microbial metabolism and assay; screening of experimental pharmacodynamic agents. The design and operation of the instrument system will be treated in general terms and the application and results in the aforementioned fields of research will be discussed. Economies in time and financial expenditure will be summarily noted.","PeriodicalId":86470,"journal":{"name":"IRE transactions on bio-medical electronics","volume":"8 1","pages":"98-108"},"PeriodicalIF":0.0,"publicationDate":"1961-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/TBMEL.1961.4322868","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"62991515","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 2

An Amplitude Distribution Analyzer for Studying Brain Waves 用于脑电波研究的振幅分布分析仪

IRE transactions on bio-medical electronics Pub Date : 1961-04-01 DOI: 10.1109/TBMEL.1961.4322878

Fred L. Alexander

引用次数: 2

Estimation of Cardiac Output in Man Using an Ear Oximeter and Coomassie Blue Dye 用耳氧饱和度仪和考马斯蓝染料估计人的心输出量

IRE transactions on bio-medical electronics Pub Date : 1961-04-01 DOI: 10.1109/TBMEL.1961.4322874

P. Sekelj, M. Mcgregor

{"title":"Estimation of Cardiac Output in Man Using an Ear Oximeter and Coomassie Blue Dye","authors":"P. Sekelj, M. Mcgregor","doi":"10.1109/TBMEL.1961.4322874","DOIUrl":"https://doi.org/10.1109/TBMEL.1961.4322874","url":null,"abstract":"A method of measuring cardiac output from dyedilution curves recorded by an ear oximeter is described. No sampling of blood is necessary to make the dye-dilution curves quantitative. The inaccuracies inherent in the \"end-tail\" method of calibration are thus avoided and the technical procedure greatly simplified. Theoretical considerations, circuitry and calibration procedures are discussed. Forty-one cardiac output estimations were made in 15 subjects. Coomassie blue was used as indicator. Comparison was made between the results obtained by the technique under study and by the end-tail venous method. Seven results had to be excluded from the comparison due to manifest inaccuracy of the reference method, which is inherently inaccurate. In spite of this, there was reasonably good agreement. The standard deviation of the differences between simultaneous values by both methods was 14.3 per cent. Fifty-two dye-dilution curves were recorded in seventeen white subjects at rest and during steady-state exercise at loads up to 600 kilogram-meters per minute. Comparison was made between the cardiac output estimates obtained by the technique described and by the \"arterial end-tail\" method. The standard deviation of the differences between the simultaneous values from the two methods was 14.2 per cent.","PeriodicalId":86470,"journal":{"name":"IRE transactions on bio-medical electronics","volume":"8 1","pages":"127-133"},"PeriodicalIF":0.0,"publicationDate":"1961-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1109/TBMEL.1961.4322874","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"62992082","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 12

Measurement of the Dielectric Properties of Blood 血液介电特性的测量

IRE transactions on bio-medical electronics Pub Date : 1961-04-01 DOI: 10.1109/TBMEL.1961.4322869

A. G. Mungall, D. Morris, W. Martin

引用次数: 4