Now showing items 31-40 of 274
Modular solid-state unit for electrochemical studies
(Elsevier, 1968)
A relatively inexpensive unit based upon solid-state operational amplifiers is described; its modular design makes it an extremely versatile instrument for many electrochemical techniques, e.g., normal direct current ...
Conformation-sensitive infrared carbon-chlorine bands of polyvinyl chloride
(John Wiley & Sons, Inc., 1964-11)
No Abstract.
Circular dichroism of the “random” polypeptide chain
(Wiley Subscription Services, Inc., A Wiley Company, 1969-09)
The circular dichroism (CD) spectrum of an unordered polypeptide chain does not correspond, as has been assumed heretofore, to that of a charged chain such as poly- L -glutamic acid or poly- L -lysine. The latter have been ...
Studies of the in vitro and in vivo effects of conjugated steroids and carboxylic acids on hepatic tyrosine transaminase in the rat
(Elsevier, 1967-11-14)
1. 1. Tyrosine transaminase (-tyrosine:2-oxoglutarate aminotransferase, EC 2.6.1.5) activity was lost rapidly in fresh rat-liver homogenates (pH 6.9), that were incubated at 38[deg]. The inactivation was paralled by the ...
Radiochemical separation of strontium by amalgam exchange
(Elsevier, 1963-07)
The radiochemical separation of strontium by an amalgam-exchange technique has been critically evaluated with a saturated aqueous solution of potassium chloride as an exchange medium. With an optimised procedure strontium ...
Modulation of the intrinsic viscosity of hyaluronic acid formed by human "fibroblasts" in vitro: The effects of hydrocortisone and colchicine
(Elsevier, 1964-07-07)
Data are presented to show that the intrinsic viscosity of hyaluronic acid elaborated into the culture medium supportinf human connective-tissue cells in vitro is modulated in a systematic manner by the cells. Intrinsic ...
Formation of Dg-1-amino-2-propanol by a highly purified enzyme from Escherichia coli
(Elsevier, 1968-05-14)
An alkaline phosphomonoesterase from Neurospora crassa
(Elsevier, 1961-11-25)
An alkaline phosphomonoesterase was purified 40-fold from mycelium of Neurospora crassa. The enzyme had a pH maximum of 8.9-9.0 with [beta]-glucerol phosphate as substrate and exhibited maximal activity in the presnece of ...
Zonal density gradient electrophoresis of intracellular membranes of brain cortex
(Elsevier, 1969-03-11)
Rat cerebral cortex was homogenized in a sucrose-free medium and a number of intracellular membrane fractions were isolated therefrom by means of differential and density-gradient centrifugation. The mitochondrial and ...