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On the Generalized Overrelaxation Method for Operator Equations

Description: "In Householder, using Weissinger's identity , obtained the necessary and sufficient conditions for the c onvergence of the Seidel method for the solution of finite matrix equations of the form (D-S-S*-F)u = f. The same coniditions were also obtained by Krein and Prozorovakaya for an analog of the Seidel method for the operator equations of the form (D+S+S*)u = f in a Hilbert space. The purpose of this article is to extend the result of the above authors to the generalized overrelaxation iter… more
Date: June 14, 1962
Creator: Petryshyn, Wolodymyr V., 1929-
Partner: UNT Libraries Government Documents Department
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Linearized Three Component Magneto-Hydrodynamics

Description: "A linearized three component MHD theory is given. The three components are two oppositely charged species and a neutral species. Linearized macroscopic equations are presented which in the limit of vanishing magnet field reduce to fluid dynamical equations, and in the limit of vanishing neutral components is frictional. In addition the sound speed that enters is a function of three equilibrium densities. These equations yield a dispersion relation which is tenth order in the wave speed. The d… more
Date: April 30, 1962
Creator: Liboff, Richard L., 1931-2014
Partner: UNT Libraries Government Documents Department
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On Certain Finite Difference Schemes for the Equations of Hydrodynammics

Description: "We will consider two finite difference schemes for the solution of the Navier-Stokes equations in one space dimension. The first is a method used by Lax and Wendroff. The second method is based on an approximate solution of the centered, implicit difference equations. Since this approximate solution is obtained by successive substitutions, we will refer to this second method as an iterative method."
Date: March 1, 1962
Creator: Gary, John William
Partner: UNT Libraries Government Documents Department
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Cosmogenic Carbon-14 and Chlorine-36 in Meteorites

Description: In 1947 Bauer, and later independently Huntley (1948), pointed out that the helium content of iron meteorites as measured by Paneth and coworkers could be accounted for by the accumulation through cosmic-ray production rather then the decay of uranium and thorium. Bauer (1947) also predicted that the meteroitic helium should contain a significant proportion of He3. I was realized that by studying the effects of cosmic radiation on meteorites much could be learned about the history of meteorite… more
Date: June 4, 1962
Creator: Goel, Parmatma S.
Partner: UNT Libraries Government Documents Department
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Reconnaissance for Uranium in the Lonquimay Area, Province of Malleco, Chile

Description: Discussing a two-week reconnaissance of the Lonquimay area, in south-central Chile, in which anomalies were noted in marl and in a sulfide-mineralized shear zone in continental black shales
Date: October 1962
Creator: Knowles, Paul H.; Bowes, William A.; C., Mario Serrano & Moraga Brito, Aldo
Partner: UNT Libraries Government Documents Department
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Reconnaissance for Uranium in the Colimapu Formation, Chile

Description: Discussing Laboratory and field studies that show that the geologic history and environment of the Colimapu formation of central Chile differed considerably from those of the uranium-bearing Diamantiano formation of Argentina with which the Upper Colimapu has been correlated.
Date: October 1962
Creator: Bowes, William A.; Knowles, Paul H.; Brito, Aldo Moraga; H., Erik Klohn & C., Mario Serrano
Partner: UNT Libraries Government Documents Department
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Flame Spectra of Vanadium, Niobium, Rhenium, Titanium and Molybdenum

Description: Abstract Line spectra of vanadium, niobium, titanium, molybdenum and rhenium of sufficient intensity to allow detection at the 1–10 p.p.m. level can be excited in fuel-rich, oxy-acetylene flames. For the strongest lines of tungsten, the sensitivity of detection is 90 p.p.m. Weak lines of zirconium, hafnium, osmium, tantalum and uranium are also observed in these flames. Recordings of the spectra are given along with wavelength tables of the strongest lines.
Date: July 23, 1962
Creator: Fassel, Velmer A.; Myers, Robert B. & Kniseley, Richard N.
Partner: UNT Libraries Government Documents Department
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Cation Exchange in Acetone-Water-Hydrochloric Acid

Description: Abstract: Distribution coefficients have been measured for the partition of metal ions between cation exchange resin and acetone-water-hydrochloric acid solutions. the differences in distribution coefficients of metal ions are greater in acetone-water media than in aqueous media of the same hydrochloric acid concentration. Using distribution coefficient data, conditions for column separations of mixtures can be selected. Column separations of metal ion mixtures can be effected by eluting wit… more
Date: May 10, 1962
Creator: Fritz, James S. (James Sherwood), 1924- & Rettig, Thomas A.
Partner: UNT Libraries Government Documents Department
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Acid-Base Reactions and Kinetics of the Halates in Fused Nitrates

Description: From Abstract : "The mechanism of the reactions of the halates, bromate, chlorate, and iodate, with dichromate in fused alkali nitrates has been shown to involve a fast equilibrium followed by a slow rate determining strip to give oxygen and halogen gases as final products." Experiments outlined serve as insight into the structure of fused salts or fused electrolytes.
Date: November 1962
Creator: Schlegel, James Max & Duke, P. R.
Partner: UNT Libraries Government Documents Department
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Propagation Characteristics of Capillary Ripples, III. Capillary Ripple Velocity and Attenuation Dispersion on Clean Water Surfaces and on Various Monolayers

Description: 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.
Partner: UNT Libraries Government Documents Department
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Transport Reactions of Some Vanadium (III) Halides

Description: Technical report. From Abstract : "The reactions of VCl2. VCl3, and VCl3-VBr3 mixtures with bromine vapor at 350 to 450°C led to vaporization of the halides and deposition of mixed halides of vanadium (III) at lower temperatures."
Date: August 21, 1962
Creator: McCarley, Robert E.; Roddy, James W. & Berry, Keith O.
Partner: UNT Libraries Government Documents Department
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The Thallium-Indium Phase Diagram as a Function of Composition, Temperature, and Pressure

Description: Technical report. From Abstract : "The thallium-rich region of the thallium-indium phase diagram was determined from atmospheric pressure to 5.5 kbars primary from electrical resistivity data obtained as a function of composition, temperature, and pressure."
Date: August 21, 1962
Creator: Meyerhoff, Robert Wagner & Smith, J. F.
Partner: UNT Libraries Government Documents Department
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Phase Diagram and Thermodynamic Properties of the Yttrium-Zinc System

Description: Technical report. From Abstract : "Thermal, metallographic, and vapor pressure data were obtained to establish the phase boundaries and the standard free energy, enthalpy, and entropy of formation for the compounds in the yttrium-zinc system."
Date: July 27, 1962
Creator: Chiotti, P. & Mason, J. T.
Partner: UNT Libraries Government Documents Department
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Magnetization and Electrical Resistivity Terbium Single Crystals

Description: Technical report. From Abstract : "Magnetic moment measurements have been made on single crystals of terbium (hcp) with fields of 50 to 18,000 oe applied along the <1120> (a-axis), <1010> (b-axis), and <0001> (c-axis) directions. The temperature range covered was 1.4 to 500°K."
Date: August 23, 1962
Creator: Hegland, D. E.; Legvold, S. & Spedding, F. H.
Partner: UNT Libraries Government Documents Department
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Rare Earth Metal - Metal Halide Systems, Lanthanum, Cerium, and Praseodymium Bromides

Description: Technical report. From Abstract : "The MBr3 + M phase diagrams for lanthanum, cerium, and praseodymium are presented. Lanthanum and cerium exhibit simple solutions of metal, with 14 and 12 mole % dissolved at eutectic temperatures of 728 and 687°, respectively. The compound PrBr2.38 is found, melting incongruently to a solution of 16% Pr in PRBr3 and Pr(s) at 601°. For praseodymium the cryoscopic behavior of dilute solutions of metal is consistent with the primary formation of the Pr2+ solute. … more
Date: September 4, 1962
Creator: Sallach, Robert A. & Corbett, John D.
Partner: UNT Libraries Government Documents Department
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I. Niobium(IV) Bromide and Pyridine Adducts of the Niobium(IV) Halides

Description: Technical report. From Abstract : "Reaction of NbBr5 and niobium metal in a sealed tube under a temperature gradient from 410° to 350° gave NbBr4 in good yields. However, an increase in the higher temperature from 410° to 450° was sufficient to eliminate NbBr4 as a product and cause deposition of a lower bromide."
Date: September 5, 1962
Creator: McCarley, Robert E. & Torp, Bruce A.
Partner: UNT Libraries Government Documents Department
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The Preparation of TaBr4, TaI4 and Pyridine Adducts of the Tantalum(IV) Halides

Description: Technical report. From Abstract : "The necessary conditions for preparation of TaBr4 and TaI4 by reduction of the pentahalides with tantalum or aluminum metal in a sealed tube under a controlled temperature gradient have been demonstrated."
Date: September 5, 1962
Creator: McCarley, R. E. & Boatman, J. C.
Partner: UNT Libraries Government Documents Department
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Calcium

Description: Technical report outlining the element calcium as well as its occurrences, physical properties, chemical properties, methods of manufacture, economic aspects, and uses.
Date: September 1962
Creator: Carlson, O. N. & Haefling, J. A.
Partner: UNT Libraries Government Documents Department
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Boiling Points and Surface Tensions of Mixtures of Benzyl Acetate With Dioxan, Aniline and Meta-Cresol

Description: Technical report. From Abstract : "Accurate measurements on boiling points and surface tensions of mixtures of benzyl acetate with dioxan, aniline and meta-cresol over the entire range of concentration are reported. The results have been analysed in terms of quasi-crystalline model which is partially successful in representing the composition dependence of heats of mixing, boiling points and surface tension except for composition dependence of boiling points of benzyl acetate and meta-cresol."
Date: September 13, 1962
Creator: Katti, P. K. & Chaudhri, M. M.
Partner: UNT Libraries Government Documents Department
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X-Ray Analytical Spectroscopy of the Rare Earths

Description: Technical report. From Abstract : "The term 'rare earths' is the classic name given to the group of elements with atomic numbers 57 to 71. The element yttrium is usually included in this group. The chemical properties of these elements are so strikingly similar that they always occur together in nature and their separation from each other is a singularly difficult task. With but few exceptions, mixtures of these elements have also defied analysis by classical methods of analytical chemistry. Co… more
Date: September 1962
Creator: Heidel, Robert H. & Fassel, Velmer A.
Partner: UNT Libraries Government Documents Department
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Magnetic Properties of Some Intra-Rare Earth Alloys

Description: Technical report. From Abstract : "Paramagnetic susceptibilities of samarium structure alloys in the systems La-Gd, Nd-Y, Nd-Tm, and Ce-Y were measured from 4.2 - 300°K to determine what effect the formation of this structure has on the magnetic properties of the alloys. Susceptibility maxima were observed in the Nd-Y and Nd-Tm alloys, at 34.5 and 28.5°K, respectively. Slope changes were observed in the curve of 1/x versus T for the La-Gd alloy at 155 and 130°K, and the susceptibility of this a… more
Date: September 10, 1962
Creator: Roughan, P. E. & Deane, A. H.
Partner: UNT Libraries Government Documents Department
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