A radioactive tracer method for the determination of the variation of vapour pressure with temperature and its application to White Phosphorus

1950 ◽  
Vol 46 ◽  
pp. 912 ◽  
Author(s):  
F. S. Dainton ◽  
H. M. Kimberley
Keyword(s):  
Vapour Pressure ◽  
Radioactive Tracer ◽  
White Phosphorus ◽  
Tracer Method ◽  
Radioactive Tracer Method

Quantitative Measurement in Vivo of Lipiodol in Lungs Especially in Connection with Lymphography

1974 ◽  
Vol 13 (03) ◽  
pp. 227-235
Author(s):  
S. Verho ◽  
R. Torsti ◽  
L. K. Patomäki
Keyword(s):  
Human Serum Albumin ◽  
Quantitative Measurement ◽  
Contrast Material ◽  
Radioactive Tracer ◽  
Maximum Amount ◽  
Detector Efficiency ◽  
Tracer Method ◽  
Radioactive Tracer Method

SummaryA new method for the quantitative determination of the radioactivity in the lungs utilizing external counting has been described. The method is based on a quick and almost complete retention in the lungs of another radioactivity labelled substance (macroaggregated 131I human serum albumin) after an intravenous injection, a fact which gives an excellent calibration of detector efficiency when the same isotope (131I) is employed.The method decribed has been applied especially to the determination of amounts of a radiological contrast material (Lipiodol) getting into the lungs in connection with a routine lymphography with the radioactive tracer method. The maximum amount of Lipiodol in the lungs was found at 24-48 hours after the lymphography, the accumulation in the lungs being 20-60% of the injected volume of Lipiodol (5 patients) and an average biological half life being 8.8 days.

102. A radioactive tracer method for the determination of low pressure adsorption isotherms

Carbon ◽  
1965 ◽  
Vol 3 (3) ◽  
pp. 354
Author(s):  
H.C Friedman ◽  
A Weinstein ◽  
W.S Diethorn ◽  
P.L Walker
Keyword(s):  
Adsorption Isotherms ◽  
Radioactive Tracer ◽  
Low Pressure ◽  
Tracer Method ◽  
Radioactive Tracer Method

New Application of Radioactive Tracer Method for the Sediment Movement Measurements in the Nearshore Zone

1989 ◽  
Vol 25 (8) ◽  
pp. 330-334
Author(s):  
A. Owezarezyk ◽  
M. Strzelecki ◽  
St. Szpilowski ◽  
R. Wierzchnicki ◽  
T. Basiński
Keyword(s):  
Radioactive Tracer ◽  
Nearshore Zone ◽  
Tracer Method ◽  
Sediment Movement ◽  
Radioactive Tracer Method

scholarly journals Dynamics of Iron Uptake and Fe3O4 Biomineralization during Aerobic and Microaerobic Growth of Magnetospirillum gryphiswaldense

1998 ◽  
Vol 180 (1) ◽  
pp. 159-162 ◽  
Author(s):  
Dirk Schüler ◽  
Edmund Baeuerlein
Keyword(s):  
Iron Uptake ◽  
Iron Transport ◽  
Radioactive Tracer ◽  
Crystal Formation ◽  
Low Oxygen ◽  
Tracer Method ◽  
Magnetospirillum Gryphiswaldense ◽  
Radioactive Tracer Method ◽  
Low Oxygen Concentration ◽  
Light Scattering Technique

ABSTRACT Iron uptake and magnetite (Fe3O4) crystal formation could be studied in the microaerophilic magnetic bacteriumMagnetospirillum gryphiswaldense by using a radioactive tracer method for iron transport and a differential light-scattering technique for magnetism. Magnetite formation occurred only in a narrow range of low oxygen concentration, i.e., 2 to 7 μM O2 at 30°C. Magnetic cells stored up to 2% iron as magnetite crystals in intracytoplasmic vesicles. This extraordinary uptake of iron was coupled tightly to the biomineralization of up to 60 magnetite crystals with diameters of 42 to 45 nm.

The radioactive tracer method of studying the erosion of the refractory lining in the sintering zone of rotary kilns

Refractories ◽  
1977 ◽  
Vol 18 (3-4) ◽  
pp. 223-226
Author(s):  
V. I. Shubin ◽  
V. I. Nikonorov ◽  
Yu. A. Kurbatov ◽  
O. M. Stanulionis ◽  
V. P. Vasil'ev ◽  
...  
Keyword(s):  
Refractory Lining ◽  
Radioactive Tracer ◽  
Tracer Method ◽  
Rotary Kilns ◽  
Radioactive Tracer Method

Determination of Blood Flow to the Rat Pituitary Gland

1958 ◽  
Vol 194 (2) ◽  
pp. 433-435 ◽  
Author(s):  
Harold Goldman ◽  
Leo A. Sapirstein
Keyword(s):  
Blood Flow ◽  
Radioactive Tracer ◽  
Anterior Lobe ◽  
Posterior Lobe ◽  
Perfusion Rate ◽  
Experimental Conditions ◽  
Time Pattern ◽  
Rat Pituitary ◽  
Radioactive Tracer Method

A radioactive tracer method, employing Rb86, is described for measurement of hypophyseal blood flow in the pentobarbitalized rat. The results indicate that the perfusion rate of the posterior lobe is 3.6 ml/gm/min. The anterior lobe has a minimal perfusion rate of 0.59 and a maximum of 0.90 ml/gm/min. under the experimental conditions employed. The time pattern of Rb86 uptake of both lobes of the pituitary is similar to that of non-nervous tissue, indicating that the blood-brain barrier does not extend into either part of this gland.

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