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Mass Transfer Coefficients and Interfacial Area in a One Stage Pulse Column

Description: From abstract: "Over-all mass transfer coefficients were determined by considering the operation of the pulse column to be a stage-wise process. The area for mass transfer was obtained by direct photographic measurements...The mass transfer coefficient was found to increase when the interfacial tension was reduced..."
Date: November 1960
Creator: Konopik, Alvin Eugene & Burkhart, Lawrence
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Microwave Measurements of Hall Mobilities in Semiconductors

Description: From abstract: "The Hall mobilities of germanium single crystals were measured with a microwave frequence of 9000 Mc/sec over the temperature range 30°K to 300°K. A rectangular sample occupied the central part of the wall of a rectangular cavity, which was doubly generate in the TE101 mode and in the TE011 mode at a single resonance microwave frequency. The external magnetic field and microwave field associated with one of the two modes gave rise to the other mode of oscillation, owing to excit… more
Date: November 1960
Creator: Nishina, Yuichiro & Danielson, G. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Ion-Exchange Methods for Obtaining Pure Metals

Description: This technical report details a process by which ion exchange was used for separation of rare earth metals in a highly pure form. Two techniques for resolving mixtures are described: ion-exchange elution chromatography and ion-exchange displacement chromatography.
Date: 1961
Creator: Powell, J. E. & Spedding, F. H. (Frank Harold), 1902-
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Angular Distribution of Relativistic Atomic K-Shell Photoelectrons

Description: From abstract: "Using the high energy limit of the exact Coulomb wave function for the outgoing electron, the differential cross section, correct to three orders in aZ, is calculated for the K-shell photoeffect. An analytic expression, exact in aZ, is obtained for the differential cross section for the special case in which the electron emerges in the forward direction."
Date: 1962
Creator: Weber, T. A. & Mullin, C. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Reactions of Some Niobium(V) Halides With Pyridine

Description: From introduction: "...In this work, reduction of the niobium(V) halides was observed, and the reaction products were characterized. Illucidation of the pyridine oxidation products has permitted an interpretation of the reaction mechanism in terms of the two-electron reduction of niobium(V) by the pyridine molecule."
Date: 1962
Creator: McCarley, R. E.; Hughes, B. G.; Boatman, J. C. & Torp, B. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Pure Metals from Chemical Processes

Description: From introduction: "Discussions of some unit chemical processes that are especially effective in obtaining metals of high purity are presented here."
Date: January 8, 1962
Creator: Wilhelm, H. A. & Peterson, David T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Pressure-Volume-Temperature Measurements on Solids

Description: From abstract: "The results of recent measurements on the equations of state of sodium and xenon are discussed. The experimental data for each of these are analyzed to show that the isothermal compressibility is solely a function of volume within experimental accuracy. The basic differences between the low temperature PV relationships for sodium and xenon are shown to be easily understandable in terms of the elementary theories of these substances. The range of experimental pressures (to 20 kba… more
Date: May 14, 1963
Creator: Swenson, C. A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Separation of Iron by Liquid-Liquid Column Extraction

Description: From abstract: "Iron(III) can be separated from many elements by extraction from 6 to ͟8M hydrochloric acid. The extraction is carried out by passing the aqueous hydrochloric acid solution through a column packed with 2-octanone adsorbed onto a poly-fluorocarbon resin. Fluoride, phosphate, sulfate or citrate cause no interference. Traces if iron(III) can be separated quantitatively from large amounts of copper(II) or zinc(II); traces of titanium(IV) can be separated from large amounts of iron(II… more
Date: March 21, 1962
Creator: Fritz, James S. (James Sherwood), 1924- & Hedrick, C. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Mass Spectra of Some Volatile Hydrides

Description: From abstract: "The hydrides of group VB an VB elements, except CH4 and NH3, have been prepared and, except for PbH4 and BiH3, their mass spectra studied. Fragmentation patterns and appearance potentials of the positive ions from these hydrides are reported. The ions have been tested for excess kinetic energy and this energy was found to be negligible. The average M-H bond energies and the ΔHf° obtained from appearance potential data agree well with values obtained by other methods. Evidence is… more
Date: March 19, 1962
Creator: Saalfeld, S. E. & Svec, Harry J. (Harry John), 1918-
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Radical and Molecular Reaction Mechanisms for (γ, n) Activated c11 Reactions in Liquid Cyclohexane

Description: From abstract: "A study has been made of the yields of gaseous products labeled with C11 from the C12(γ, n) reaction in liquid cyclohexane. The effects of variations in the radiation dose and in the concentration of dissolved iodine during irradiation on the yields of these products were studied in order to elucidate the reaction mechanisms. A reaction model was developed as a method of assessing the relative importance of radical and molecular processes. The data suggest (1) that the formation… more
Date: March 21, 1962
Creator: Rack, Edward P. & Voigt, Adolf F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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αZ Correction to the Bethe-Maximon Pair Production Cross Section

Description: From abstract: "The first order correction in αZ to the Bethe-Maximon pair production cross section is calculated for the case where the incident photon and one of the electrons has an energy much greater than mc2. Comparison of these calculations to the experimental data of Plimpton and Hammer shows an improvement ina greement between theory and experiment of approximately a factor of 1+(αZ4π/15) for low positron kinetic energies. However, for positron kinetic energies of the order of 1 Mev no… more
Date: March 21, 1962
Creator: Moroi, David S. & Hammer, C. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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͟v͟ic-Dioximes as Analytical Reagents

Description: This technical report discusses the synthesis of vic-dioximes, the analysis of vic-dioximes, the structure of vic-dioximes, the structure of metal(II)-vic-dioxime complexes, and analytical applications of this research. The report includes tables and figures that accompany the report's contents and findings.
Date: March 19, 1962
Creator: Banks, Charles V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Electrical Properties of the Tungsten Bronzes

Description: From abstract: "The electrical resistivity of NaxWO3, LixWO3, and KxWO3 has been measured at 300°K. The range of x-values was 0.25 < x < 0.9. All resistivities were characteristic of a metal and lie on a single curve. An extrapolation of the conductivity curve to zero conductivity indicated that the tungsten bronzes should be semiconductors for x < 0.25. The resistivities that have been measured for tungsten bronzes with x < 0.25 showed semiconducting behavior. The resistivity of LixWO3 exhibit… more
Date: March 21, 1962
Creator: Shanks, H. R.; Sidles, Paul Howard & Danielson, G. C.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Absolute Abundance of the Chromium Isotopes in Some Secondary Minerals

Description: From abstract: "Isotopic assays have been made on the chromium in samples from fourteen different chrominiferous minerals from different geographic and meteoritic sources. The results of the assays indicate that it is not possible to unequivocally state that variations in isotopic compositions have been observed."
Date: 1962
Creator: Svec, Harry J. (Harry John), 1918-; Flesch, G. D. & Capellen, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Application of Wax Laps to Vibratory Polishers

Description: From introduction: "In this paper the adaptation of the wax lab surface vibratory polisher is described. The wax lap requires little maintenance during the life of the lap. It is not necessary to remove any of the holding devices on the bowl to clean and recondition the lap. The bowl is merely washed out, recharged and placed in operation. The wax lap will not wrinkle or tear, nor is it necessary to change it each day such as the silk or nylon cloths."
Date: April 19, 1962
Creator: Hopkins, E. N. & Peterson, D. T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Thorium-Molybdenum Phase Diagram

Description: From abstract: "The phase diagram of the thorium-molybdenum alloy system has been determined to be the eutectic type with a eutectoid reaction associated with the thorium alpha-beta transformation. X-ray, thermal, electrical resistance and metallographic methods have established the eutectic point at 1380 ± 10°C and 7.0 ± 0.5 wt % molybdenum. A eutectoid reaction is proposed at 1358 ± 5°C and less than 0.1 wt % molybdenum. No solubility of thorium in molybdenum was detected at 1325°C."
Date: March 27, 1962
Creator: McMasters, O. D.; Palmer, P. E. & Larsen, W. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Some Observations Regarding Rare-Earth Lactates

Description: From abstract: "Lactates of all the rare earths except lanthanum, cerium, and praseodymium were prepared and studied. In the case of lanthanum, cerium, and praseodymium the lactates are apparently so soluble that they cannot be crystallized directly from aqueous solution. Products obtained by addition of anhydrous ethanol to sirupy solutions of the light-rare-earth lactates were not well characterized and were deliquescent. Neodymium lactate trihydrate was prepared only by the addition of alcoh… more
Date: March 28, 1962
Creator: Powell, J. E. & Farrell, J. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Mass Spectra of the α-Amino Acids

Description: From abstract: "The mass spectra of the α-amino acids have been obtained in a mass spectrometer equipped with a heated crucible ion source. Correlations of these data have been made with the molecular formulae of the ion fragments, and mechanisms leading to these fragments are proposed. Comparisons of these data have been made with the mass spectra of the ethyl esters of the amino acids and with other carboxylic acids and their esters."
Date: April 9, 1962
Creator: Junk, Gregor & Svec, Harry J. (Harry John), 1918-
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Formation Constants of the Complex Species Formed by Interaction of Rare-Earth Nitrilotriacetate Complexes with an Equivalent Amount of Base

Description: From abstract: "The formation constants of the RChOH- species, formed by interaction of individual rare-earth nitrilotriacetate species and KOH at 25°C and an ionic strength of 0.1, have been determined by the potentiometric method, i.e., computed from the pH values of equilibrium mixtures containing varying proportions of rare-earth complex and base. The relationship of these constants to the ion-exchange separation of rare earths at high pH has been discussed."
Date: April 13, 1962
Creator: Guptak, Asim K. & Powell, Jack E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Progress in Sintering

Description: From abstract: "Sintering is broadly defined as all aspects of the adhesion, densification, shrinkage, and consolidation which accompanies the reduction in surface energy of a powder compact which occurs upon application of heat and/or pressure. The process of sintering is then further divided into the initiation, material transport, and grain growth-recrystallization stages. A general review is made of each of these stages, noting typical work which has contributed to progress in each area inv… more
Date: April 16, 1962
Creator: Wilder, D. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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