Now showing items 11-20 of 26
Use of momentum balance in calibrating orifices for flow of gases
(American Institute of Chemical EngineersWiley Periodiocals, Inc., 1960-06)
A method of determining the absolute calibration of a gas-flow orifice without the use of gas holders or any comparative device is described. The method is based on the application of the momentum balance, as well as the ...
Indirect neutron absorptiometry
(Elsevier, 1960)
A preliminary account is given of the use of the neutron absorption of suitable elements (such as gadolinium) for the determination of non-absorbing elements (such as fluorine) by measuring the absorption of a dissolved ...
Hydrolysis of nucleoside di- and triphosphates by crystalline preparations of yeast inorganic pyrophosphatase
(Elsevier, 1960-06-17)
1. 1. Crystalline preparations of yeast inorganic pyrophosphatase catalyze phosphate liberation from ATP and ADP, as well as from pyrophosphate, in the presence of zinc ions.2. 2. A variety of other nucleoside di- and ...
Heterogeneity of tissue dehydrogenases
(Elsevier, 1960-10)
Rat tissue homogenates have been subjected to zone electrophoresis in starch gel. Lactate, malate, isocitrate, glucose 6-phosphate and [alpha]-glycerophosphate dehydrogenase activity was directly visualized by incubating ...
The interplay of steric and electronic factors affecting geometrical isomerism of diaryl ketimine derivatives
(Elsevier, 1960)
The evidence bearing on the mechanism of the Schmidt reaction with ketones is critically reexamined. It is shown that dehydration of an initially formed azidohydrin (I) to a ketiminodiazonium ion (II), which may or may not ...
A scintillation method for determining liquid - liquid interfacial areas
(American Institute of Chemical EngineersWiley Periodiocals, Inc., 1960-09)
In stirred beakers the interfacial area between xylene containing a scintillator and tritiated water was measured as a function of stirrer speed by a scintillation counting technique. Because of the 6 Μ average range of ...
A comparison of some physical properties of polyethylene–styrene graft copolymers prepared by the trapped free radical method and polyethylene–polystyrene blends
(Interscience Publishers, Inc.Wiley Periodiocals, Inc., 1960-04)
The preparation and properties of polyethylene–styrene graft copolymers using trapped free radicals produced by gamma rays has been reported. When polystyrene branches are attached to the polyethylene chain there is ...