Now showing items 21-30 of 248
Condensing heat transfer within horizontal tubes
The purpose of this investigation was to study the effect of vapor velocity, temperature difference and fluid properties upon the heat transfer coefficient of a vapor condensing within a horizontal tube. Condensing heat ...
Vapor-liquid equilibria in the system hydrogen-nitrogen-carbon monoxide
Vapor-liquid equilibrium compositions for the system hydrogen-nitrogen-carbon monoxide were determined at -310°F, and -280°F and -240°F from 300 psig to the critical. PVT data for hydrogen were fitted to the ...
Effects of the decay of sulfur-35 on some electrical properties of cadmium sulfide semiconducting films
The vacuum behavior of radioactive and non-radioactive semiconducting films of CdS has been studied as a function of time in order to determine the effect of radioactive doping. Radioactive films containing S35 were made ...
Low temperature vapor-liquid equilibrium in light hydrocarbon mixtures: Methane-ethane-propane system
Experimental equilibrium data have been determined for 175 mixtures of methane, ethane, and propane. The investigation included temperatures from 50°F to -200°F and pressures up to the critical. A vapor recycle ...
A study of alumina silicon fluoride combinations as hydrocarbon conversion catalysts
The purpose of this work was to study the influence of certain variables in the preparation of an alumina-silicon-fluoride complex on its behavior as a cracking catalyst.
The compressibility factors and second virial coefficients for helium-nitrogen mixtures at low temperature and high pressure
The Burnett method was used to determine the volumetric behavior of helium, nitrogen, and six evenly spaced helium-nitrogen mixtures at low temperature and high pressure. Compressibility isotherms were determined for both ...
Effects of irradiation on the catalytic activity of metal oxides
This work further develops a technique for changing the electronic and defect structure of magnesium oxide and silica gel catalysts. Relatively small doses of ultraviolet and neutron irradiation have been found to enhance ...
The study of high pressure vapor-liquid equilibria by gas-liquid partition chromatography
A method has been investigated for measuring vapor-liquid equilibrium ratios, or K-values, of a solute distributed between a gas phase and a non-volatile liquid phase. A gas-liquid partition chromatographic technique is ...
Characterization and modeling of the pH-regulated expression vector, pSM-10
A new type of plasmid vector has been developed for Escherichia coli. Foreign gene expression can be altered by external pH changes. pSM-10 is the first generation of these plasmid constructs that utilizes the cadA operon ...