Now showing items 51-60 of 387
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 ...
Natural convection inside a horizontal cylinder
(American Institute of Chemical EngineersWiley Periodiocals, Inc., 1960-06)
The two vertical halves of the wall of a 4.3-in. I.D. cylinder were maintained at different uniform temperatures. The rate of circulation of air inside the cylinder and the local rate of heat transfer between the wall and ...
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 ...
High temperature pile irradiation of the n -heptane-hydrogen system
(American Institute of Chemical EngineersWiley Periodiocals, Inc., 1961-12)
A pilot unit for the high-temperature irradiation of flowing reactants was designed for the beam port of a nuclear reactor. Radiation-thermal cracking of the n -heptane-hydrogen system was studied with molal H 2 /C 7 ...
Formation of dehydroepiandrosterone sulphate by previable human foetuser
(Elsevier, 1967-06-06)
Vapor-liquid equilibrium for the system hydrogen—benzene—cyclohexane— n -hexane
(American Institute of Chemical EngineersWiley Periodiocals, Inc., 1967-01)
This paper presents vapor-liquid equilibrium data for the system hydrogen—benzene—cyclohexane— n -hexane over the pressure range of 500 to 2,000 lb./sq.in.abs. and the temperature range of 200° to 300°F. Experimental ...
Characterization of a mutant human erythrocyte carbonic anhydrase: Carbonic anhydrase IcGuam: The amino acid substitution and carboxylesterase and hydratase activities
(Elsevier, 1966-11)
Evidence is presented which indicates that an arginine residue has substituted for a glycine residue in the abnormal human erythrocyte carbonic anhydrase, CA IcGuam. The ratio of the amount of mutant to normal enzyme ...