Preparation of Sodium Ethylsulfate (open access)

Preparation of Sodium Ethylsulfate

From abstract: "The optimum conditions for preparing sodium ethylsulfate from sulfuric acid, absolute ethyl alcohol and sodium hydroxide have been determined."
Date: February 1962
Creator: Walker, John Craig; Olson, E. H. & Burkhart, L. E.
System: The UNT Digital Library
Pure Metals from Chemical Processes (open access)

Pure Metals from Chemical Processes

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.
System: The UNT Digital Library
The Absolute Abundance of the Chromium Isotopes in Some Secondary Minerals (open access)

The Absolute Abundance of the Chromium Isotopes in Some Secondary Minerals

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.
System: The UNT Digital Library
Angular Distribution of Relativistic Atomic K-Shell Photoelectrons (open access)

Angular Distribution of Relativistic Atomic K-Shell Photoelectrons

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.
System: The UNT Digital Library
Automatic Recording Surface Balance (open access)

Automatic Recording Surface Balance

From introduction: "We have previously described simple modifications of a 'Cenco' hydrophil balance which allowed automatic recording of monolayer compression characteristics. This note describes the torsion balance and trough designed and built in this Laboratory as a result of our experience with the previous instrument."
Date: 1962
Creator: Mann, J. Adin, Jr. & Hansen, Robert S.
System: The UNT Digital Library
Lauricella's Hypergeometric Function FD (open access)

Lauricella's Hypergeometric Function FD

This report discusses Lauricella's hypergeometric function F[subscript]D. The report discusses the function R of n variables, special values of parameters and variables, relations between associated functions, differential relations, Euler-Poisson equations, integral representations, and elliptic integrals.
Date: 1962
Creator: Carlson, Bille Chandler, 1924-
System: The UNT Digital Library
Nuclear Magnetic Resonance Line Shapes Resulting From the Combined Effects of Nuclear Quadrupole and Anisotropic Shift Interactions. I. Theory (open access)

Nuclear Magnetic Resonance Line Shapes Resulting From the Combined Effects of Nuclear Quadrupole and Anisotropic Shift Interactions. I. Theory

From introduction: "A nuclear quadrupole interaction may occur simultaneously in conjunction with an anisotropic magnetic shift in a variety of solids. The non-cubic pure metals, in particular the hexagonal close-packed ones, afford a considerable number of examples, some which have already been studied. Among the latter may be listed Ga, In, and Te, and the list of possibilities must include Ti, Zr, Hf, Lu, Sc, and La, and perhaps others. Nuclear magnetic resonances in intermetallic compounds may also be expected to exhibit these combined effects. The cubic Laves phase compounds of the MgCu2 type have provided a number of examples, principally involving Al[^]27 nucleus. transition metal borides and beryllides, as well as other hexagonal and tetragonal intermetallics may also be included in this category. Finally, the nuclear magnetic resonance of the halogen nuclei in the paramagnetic chlorides, bromides, and iodides of transition metals will in general reflect the presence of both types of interaction. In the following section the theory for these combined effects is considered in some detail..."
Date: 1962
Creator: Jones, W. H., Jr.; Graham, T. P. & Barnes, R. G. (Richard G.)
System: The UNT Digital Library
Propagation Characteristics of Capillary Ripples, III. Capillary Ripple Velocity and Attenuation Dispersion on Clean Water Surfaces and on Various Monolayers (open access)

Propagation Characteristics of Capillary Ripples, III. Capillary Ripple Velocity and Attenuation Dispersion on Clean Water Surfaces and on Various Monolayers

From Abstract: "The theory and instrumentation previously described by us were applied to the systems monolayer-free distilled water; stearic acid, mixed hexadecanol and octadecanol and several long chain fatty ester monolayers; stearic acid - polyvinyl acetate mixed films and egg albumen spread films; heptanoic acid adsorbed monolayers."
Date: January 1962
Creator: Mann, J. Adiin, Jr. & Hansen, R. S.
System: The UNT Digital Library
The Reactions of Some Niobium(V) Halides With Pyridine (open access)

The Reactions of Some Niobium(V) Halides With Pyridine

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.
System: The UNT Digital Library
Self-Diffusion in Polycrystalline Yttrium Oxide (open access)

Self-Diffusion in Polycrystalline Yttrium Oxide

From abstract: "The self-diffusion coefficient of yttrium in yttrium oxide has been determined for polycrystalline Y2O3 in the temperature range 1400 to 1800°C. Radioactive Y-91 was deposited on sintered specimens of 94 to 97% theoretical density. The specimens were annealed under vacuum and sectioned. The following equation describes the temperature dependence of the diffusion coefficient over the range studied: D = 2.41 x 10[^]-4 exp (-43,900/RT) cm[^]2/sec."
Date: 1962
Creator: Berard, M. F. (Michael F.), 1938- & Wilder, D. R.
System: The UNT Digital Library
Transference Numbers and Ion Association in Pure Fused Alkaline Earth Chlorides (open access)

Transference Numbers and Ion Association in Pure Fused Alkaline Earth Chlorides

From abstract: "The transference number of the chloride ion was determined in pure fused MgCl2, CaCl2, SrCl2, and BaCl2 utilizing radioactive chloride ions in a porous quartz membrane cell."
Date: 1962
Creator: Wolf, Edward D. & Duke, Frederick Robert, 1917-
System: The UNT Digital Library
Analysis of Mixtures of Alcohols by Acylation (open access)

Analysis of Mixtures of Alcohols by Acylation

From abstract: "Recently a general chemical method for the analysis of mixtures of alcohols appeared, using pyridine catalyzed acetylation and second order kinetics to determine the amount of the faster reacting component. The use of 0.25M isobutyric anhydride in pyridine containing 0.0025M perchloric acid as catalyst promotes the rate of the reaction and diminishes the time necessary to perform an analysis. A mathematical treatment of the data and kinetic plot reduces the number of kinetic points to only four or five. The mixtures are primarily composed of isomers."
Date: November 1961
Creator: Fellows, William Dean & Fritz, James S. (James Sherwood), 1924-
System: The UNT Digital Library
The Equation of State of Solids at Low Temperature (open access)

The Equation of State of Solids at Low Temperature

Technical report describing and evaluating the the three experimental methods for obtaining equation of state data at low temperatures; (1) approximate measurement of the PVT relationship by a piston-displacement technique, (2) the measurement of a heat capacity at constant volume as a function of molar volume and temperature, and (3) direct measurement of the pressure variation of the elastic constants using ultrasonic techniques. X-ray methods also might be applicable.
Date: October 13, 1961
Creator: Bernardes, N. (Newton), 1931- & Swenson, C. A.
System: The UNT Digital Library
Internal Conversion Coefficients of the 2+-0+, E2 Transitions in Even-Even Sm152[over]90 and Gd152[over]88 (open access)

Internal Conversion Coefficients of the 2+-0+, E2 Transitions in Even-Even Sm152[over]90 and Gd152[over]88

From abstract: "To investigate the deviation of the internal conversion coefficients of E2 transitions from theoretical computations and their dependence on nuclear deformation, the total internal conversion coefficient of the 121.8-kev 2+-0+ transition in ellipsoidal Sm152[over]90 was measured to be 1.135 ± 0.010 with a high accuracy coincidence-sum method. The K-shell to total internal conversion ratio was determined to be 0.588 ± 0.003 with a [beta] spectrometer...The experiment revealed no deviation from theory nor indications of strong dependence on nuclear deformation; it therefore did not confirm recent beliefs in this regard. The details of the coincidence-sum method were described. The K electron to total electron capture ratio, from Eu152 to the 1.53 Mev state in Sm152 was also measured to be 0.79±0.02."
Date: July 17, 1961
Creator: Lu, D. C. & Schupp, G.
System: The UNT Digital Library
gem-Bis(disubstitutedphosphinyl)alkanes. II. Extraction Properties of Bis(di-n-hexlphosphinyl)methane (open access)

gem-Bis(disubstitutedphosphinyl)alkanes. II. Extraction Properties of Bis(di-n-hexlphosphinyl)methane

From abstract: "Bis(di-n-hexylphosphinyl)methane, HDPM, [(C6H13)2P(O)]2CH2, has been studied as an extractant for a variety of metals. HDPM was evaluated as an extractant for uranium(VI) and compared with tri-n-octylphosphine oxide, TOPO, (C8H13)3PO. In nonpolar solvents, HDPM forms a polymeric-like substance with compounds of uranium(VI). Viscosity measurements indicate that the molecular weight of this polymeric-like substance is about 100 times greater than the corresponding complex with TOPO. Polymer formation occurs only when nonpolar solvents are used as diluents for HDPM and is easily avoided by using polar solvents such as 1,2-aichlorobenzene. HDPM forms 1:1 and 2:1 complexes with uranium(VI) nitrate. Equilibrium constants for these complexes as well as that for the 2:1 TOPO complex were calculated and it was shown that the over-all constant is at least ten times larger for the HDPM complex than for the TOPO complex. The effect of concentration of various mineral acids, extractant concentration, temperature, and diluents on the extraction of uranium are discussed."
Date: April 11, 1961
Creator: Burke, Keith E.; Sakurai, Hiroshi; O'Laughlin, Jerome W. & Banks, Charles V.
System: The UNT Digital Library
Chapter 48: Analytical Chemistry of Cobalt (open access)

Chapter 48: Analytical Chemistry of Cobalt

This report provides a detailed discussion of the analytical chemistry of cobalt, including an introduction, the properties of cobalt, the sampling of cobalt-bearing materials, the separation and isolation of cobalt, the detection and identification of cobalt, the determination of cobalt, and the specific methods for determining cobalt.
Date: 1961
Creator: Dale, John M. & Banks, Charles V.
System: The UNT Digital Library
Electron Deficient Compounds: IX. The Structure of Stannous Chloride (open access)

Electron Deficient Compounds: IX. The Structure of Stannous Chloride

This report discusses the structure of stannous chloride along with tables and figures detailing findings.
Date: 1961
Creator: Rundle, R. E. & Olson, David, 1937-
System: The UNT Digital Library
Ion-Exchange Methods for Obtaining Pure Metals (open access)

Ion-Exchange Methods for Obtaining Pure Metals

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-
System: The UNT Digital Library
A Model of a Mass Spectrometer to Simultaneously Collect Positive and Negative Ions (open access)

A Model of a Mass Spectrometer to Simultaneously Collect Positive and Negative Ions

From introductory paragraph: "A study of the ionization efficiency of the positive ions derived from chromyl fluoride and chromyl chloride as a function of the electron energy has been reported."
Date: 1961
Creator: Svec, Harry J. (Harry John), 1918- & Flesch, Gerald D.
System: The UNT Digital Library
Point Imperfections in Metals: Existance and Detection (open access)

Point Imperfections in Metals: Existance and Detection

From introductory paragraph: "The factors which control the properties, and hence the utility, of an alloy are microscopic in nature. These factors are controlled by controlling the composition and past history of the material. control of the composition of the alloy determines for the most part the number and types of phases which will be present, while control of the past history of the alloy determines the grain size and degree of crystalline perfection within the grains. Since the electrical, mechanical, and many of the physical properties of a metal are highly sensitive to the degree of crystalline perfection, it is worthwhile to explore the nature and role of crystalline imperfections."
Date: 1961
Creator: Smith, J. F.
System: The UNT Digital Library
Pyrometallurgical Reprocessing of Thorium-Uranium Fuel (open access)

Pyrometallurgical Reprocessing of Thorium-Uranium Fuel

From summary: "A proposed metallurgical procedure for reporocessing Th-U233 fuel has been outlined. Some basic experimental data pertinent to the proposed process which has been published elsewhere has been reviewed and some new data presented. In the dissolution of thorium-uranium alloy in magnesium the data show that protactinium precipitates with the uranium and cerium remains in the magnesium-rich solution. It is expected that yttrium, other light rare earth elements, the alkali and alkaline earth metals will also concentrate in the magnesium-rich solution while iron, chromium, zirconium, molybdenum, niobium and the more noble metals will concentrate in the uranium-rich phase."
Date: 1961
Creator: Chiotti, P.; Woerner, P. F. & Parry, S. J. S.
System: The UNT Digital Library
Small Order Shape Factor in Na22 (open access)

Small Order Shape Factor in Na22

From abstract: "The beta spectrum of Na22 has been examined using an intermediate-image beta-ray spectrometer operating at 2 1/2% transmission and 2.4% resolution. Five separate determinations of the maximum energy and of the slope of the form-factor plot were made. One determination was made using a charge-discriminating baffle inserted in the spectrometer. The unweighted mean of the five values for the maximum energy is 547.4 ± 1.0 kev. The unweighted mean of the five values for the form-factor slope is 0.023 ± 0.006 1/mc2."
Date: 1961
Creator: Nichols, R. T.; McAdams, R. E. & Jensen, E. N.
System: The UNT Digital Library
Structures of the Intermediate Phases Ni10Zr7 and Ni10Hf7 (open access)

Structures of the Intermediate Phases Ni10Zr7 and Ni10Hf7

This report discusses the experiments undertaken to determine the crystal structures of the intermediate phases Ni10Zr7 and Ni10Hf7. The report looks at structural determinations, a comparison observed and calculated structure factors for the refined zirconium-rich structure, the refined structural parameters for the stoichiometric Ni10Zr7 phase, a comparison of observed and calculated structure factors for the refined stoichiometric Ni10Zr7 structure, a comparison of observed intensity data and calculated structure factors for the stoichimetric Ni10Hf7 phase, and a comparison of interatomic distances in the zirconium-rich and stoichiometric Ni10Zr7 structures.
Date: 1961
Creator: Kirkpatrick, M. E.; Smith, J. F. & Larsen, W. L.
System: The UNT Digital Library
Ternary Compounds Between Thorium Monocarbide and Thorium Dihydride (open access)

Ternary Compounds Between Thorium Monocarbide and Thorium Dihydride

From abstract: "The thorium-hydrogen-carbon system was studied by measuring hydrogen equilibrium pressures at various compositions and temperatures. Two compounds, ThC·ThH2 and ThC·2ThH2, were found and characterized. ThC·ThH2 has a hexagonal closest-packed lattice with ao=3.816Å and co=6.302Å. ThC·2ThH2 has a monoclinic lattice with ao=6.50Å, bo=3.80Å, co=10.91Å and β = 119°. The enthalpies of formation for each compound were determined."
Date: 1961
Creator: Peterson, D. T. & Rexer, J.
System: The UNT Digital Library