Results 121 to 130 of about 9,133 (154)
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Tissue vitamin B-12 assay by a radioisotope dilution technique
Clinica Chimica Acta, 1975A method is described for the measurement of vitamin B-12 (B-12) in solid tissues by radioisotope dilution (RID) assay. The method is a modivication using double extraction of a serum B-12 RID assay which uses chicken serum as the B-12 binder. The method was developed and tested using human and bat liver specimens.
S V, Van Tonder, J, Metz, R, Green
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Radioisotope-dilution technique for determining endogenous manganese in feces of the growing rat
Biological Trace Element Research, 1986A conventional balance study with growing rats was conducted to evaluate experimental conditions for determining endogenous fecal manganese (Mn) excretion and, hence, true Mn absorption by the isotope-dilution technique. Thirty-four rats, with a mean initial live weight of 60 g, allotted to three groups of 8 animals and one group of 10 animals, were ...
E, Weigand, U, Helbig, M, Kirchgessner
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A Rapid Radioisotope Dilution Technique for the Accurate Determination of the Cardiac Output
Nuklearmedizin, 1968SummaryA pair of printing scalers was used to record the information obtained by external monitoring of the isotope dilution curve following the intravenous injection of radioiodinated human serum albumin. The first scaler gives the differential count rate of the curve at increments of one second, whereas the second integrates continuously the isotope ...
M A, Razzak, R E, Botti, W J, MacIntyre
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BJOG: An International Journal of Obstetrics & Gynaecology, 1977
SummaryUsing a 51Cr‐labelled red cell dilution technique, the blood loss associated with elective lower segment Caesarean section was measured in 30 patients, half of whom had a previous history of Caesarean section. The blood loss (mean±SD) was 1290±240 ml for first Caesarean sections and 1012±380 ml for repeat operations.
M D, Read, J M, Anderton
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SummaryUsing a 51Cr‐labelled red cell dilution technique, the blood loss associated with elective lower segment Caesarean section was measured in 30 patients, half of whom had a previous history of Caesarean section. The blood loss (mean±SD) was 1290±240 ml for first Caesarean sections and 1012±380 ml for repeat operations.
M D, Read, J M, Anderton
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Radioisotope Dilution Technique for Determination of Zinc Absorption <i>in vivo</i>
Annals of Nutrition and Metabolism, 1976A radioisotope dilution technique was adapted for determination of the absorbability of dietary zinc. In 16 growing rats given a casein diet with 12.8 mg Zn/kg dry matter, a mean apparent Zn digestibility of 72.4 % was observed in a 6-day balance period 9 days after an intramuscular injection of <sup>65</sup>Zn-ZnCl<sub>2</sub>.
E. Weigand, M. Kirchgessner
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Blood volume analysis by radioisotopic dilution techniques: State of the art
Applied Radiation and Isotopes, 2015In the last years, there has been a growing recognition of the importance of blood volume abnormalities in the pathophysiology of several conditions and, consequently, a growing interest of accurate and rapid volume status assessment. Accordingly, there has been a surge of interest in blood volume analysis by radioisotopic dilution technique.
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Determination of silver in rocks by a stoichiometric radioreagent radioisotope dilution technique
Analytica Chimica Acta, 1975Abstract A rapid procedure for the routine determination of nanogram amounts of silver in rocks is described. After dissolution of the sample with a hydrofluoric-nitric-perchloric acid mixture in the presence of 110Ag tracer, the silver is separated by extraction as the dithizonate into xylene and back-extracted into dilute hydrochloric acid.
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Radioisotope dilution technique for determination of zinc absorption in vivo.
Nutrition and metabolism, 1977A radioisotope dilution technique was adapted for determination of the absorbability of dietary zinc. In 16 growing rats given a casein diet with 12.8 mg Zn/kg dry matter, a mean apparent Zn digestibility of 72.4% was observed in a 6-day balance period 9 days after an intramuscular injection of 65Zn-ZnCl2.
E, Weigand, M, Kirchgessner
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RADIOISOTOPE DILUTION TECHNIQUES FOR MEASUREMENT OF BODY COMPOSITION IN HEALTH AND DISEASE
Radiologic Clinics of North America, 1967A P, Morgan, C M, Boyden, F D, Moore
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