منابع مشابه
Isotope Dilution Residue Function
We analyzed the isotope dilution residue function from a single cardiac chamber for an arbitrary inlet distribution of tracer and arbitrary mixing within the chamber, and established a general relationship between cardiac output and the chamber residue function. In our experiments, we made simultaneous temperature measurements in three left ventricular chamber subregions of the dog subjected to...
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BETH BURNSIDE, CHRIS KOZAK, and F. C. KAFATOS. From the Marine Biological Laboratory, Woods Hole, Massachusetts 02543 . Dr . Burnside's present address is the Department of Anatomy, School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104 . Dr . Kozak's present address is the Department of Biology, Yale University, New Haven, Connecticut 06520 . Dr. Kafatos' present addr...
متن کاملIsotope dilution/mass spectrometry of serum cholesterol with [3,4-13C]cholesterol: proposed definitive method.
We describe a new gas-chromatographic/mass-spectrometric (GC/MS) isotope-dilution method for determination of serum cholesterol. The method has been fully optimized and documented to provide the high accuracy and precision expected for a Definitive Method. In the presence of [3,4-13C]cholesterol, cholesteryl esters in serum are hydrolyzed under optimum conditions and the entire cholesterol pool...
متن کاملThermal-ionization isotope-dilution mass spectrometry as a definitive method for determination of potassium in serum.
Thermal-ionization isotope-dilution mass spectrometry is a highly precise and accurate method for the determination of potassium concentrations in serum. Although not suited for routine use because of the time and expense required, the technique provides an extremely valuable tool for the characterization of reference materials and for evaluating other analytical methods. The technique has rece...
متن کاملTestosterone/dihydrotestosterone Kit Method for Diagnostic Use Reference Methodology Involving Isotope Dilution/mass Spectrometry
During early fetal life of males, conversion of testosterone (T) to 5a-dihydrotestosterone (DHT) via the action of 5a-reductase in the external genital tissues is essential for complete sexual differentiation of male external genitalia. Measurement of low concentrations of DHT in serum of affected prepubertal males confirms the type of sexual disorder (1,2). Although commercial methodologies ha...
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ژورنال
عنوان ژورنال: Journal of the Mass Spectrometry Society of Japan
سال: 1958
ISSN: 1884-3271,1340-8097
DOI: 10.5702/massspec1953.1958.11_2