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Propagation Characteristics of Capillary Ripples II. Instrumentation for Measurement of Ripple Velocity and Amplitude

Description: Technical report. From Abstract : "An instrument for measuring the propagation velocity of capillary ripples to within 0.3% and for measuring the amplitude of such ripples to within 1 to 10% (depending upon amplitude) was designed and constructed. The principle components of the instrument were a Teflon Langmuir trough (with provision for automatic recording of compression data); generating and receiving probes consisting of a thin rod and a razor blade respectively mounted so that the rod and razor edge were parallel and accurately placed in the surface to be studied."
Date: January 1963
Creator: Mann, J. Adin, Jr. & Hansen, R. S.
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. But with lanthanum and cerium the results are anomalous, as the cryoscopic analyses indicate 1.6-1.7 and 2.0 new particles (cation basis) per metal dissolved instead of ~3."
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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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 alloy remained temperature-independent from 130-7°K. A rather poorly defined region of constant susceptibility was also observed or the Ce-Y alloy, from 26-37°K. Above these transition temperatures, the alloys obeyed the Curie-Weiss law, the susceptibilities of the La-Gd and Ce-Y samples indicating the possibility of electron transfer occurring in these cases."
Date: September 10, 1962
Creator: Roughan, P. E. & Deane, A. H.
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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III. Crystalline Complexes of Bis(Di-2-Ethylbutylphosphinyl) Methahe With Uranium(VI) Nitrate and With Thorium Nitrate

Description: Technical report. From Abstract : "Bis(di-2-ethylbutylphosphinyl)methane, EBDPM, forms complexes with uranium (VI) nitrate and thorium (IV) nitrate in which EBDPM acts as a bidentate ligand and the nitrato groups appear to be coordinated. The complex with uranium (VI) is a monomer, UO2(NO3)29EBDPM), while the complex with thorium in a dimer, [Th(NO3)4]2(EBDPM)3. Both complexes are of high thermal stability."
Date: October 16, 1962
Creator: Parker, James R. & Banks, Charles V.
Partner: UNT Libraries Government Documents Department
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Separation and Spectrophotometric Determination of Rare Earths

Description: Technical report. From Summary : "At the present time arsenazo appears to be widely used for the spectrophotometric determination of rare earths. Unfortunately, the method is not selective. The separation of rare earths and yttrium from interfering elements has been studied, and the following method has been proposed. Rare earths are precipitated as fluorides using fluorides using calcium fluoride as the carrier. Thorium and zirconium are removed by extraction with thenoyltrifluoroacetone (TTA) in xylene at pH 1.3. Small amounts of residual aluminum, iron, etc. are removed by extraction with 8-quinolinolchloroform at pH 4.5. Rare earths are separated from calcium by TTA extraction at the same pH, and they are then back-extracted into 1 M nitric acid. After evaporation of the solution, the rare earths are determined spectrophotometrically with arsenazo."
Date: October 18, 1962
Creator: Onishi, Hiroshi & Banks, Charles V.
Partner: UNT Libraries Government Documents Department
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The Enhancement of Acidity of Very Weak Acids in Tertiary Butyl Alcohol

Description: Technical report. From Abstract : "The acidity of a solution of acid, HX, and salt, MX, is affected by both the concentration of X- and M+ owing to incomplete dissociation of the salt, MX. it was possible to increase the acidity of a solution of 2,6-di-tert-butylphenol - tetrabutylammonium 2,6-di-tert-butylphenolate relative to a dilute solution of tetrabutylammonium hydroxide by increasing the tetrabutylammonium bromide content. This indicates that the dissociation constant of the hydroxide base is sufficiently large that extensive dissociation occurs in dilute solutions. The addition of tetrabutylammonium bromide is therefore recommended as a general method for increasing the acidity and improving the titration characteristics of extremely weak acids."
Date: October 22, 1962
Creator: Marple, Leland & Fritz, J. S.
Partner: UNT Libraries Government Documents Department
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Study of Metal-1.10-Phenanthroline Complex Equilibria by Potentiometric Measurement

Description: Technical report. From Abstract : "The silver-1,10-phenanthroline system has been studied and the stability constants determined for the 1:1 and 2:1 complexes using the silver electrode. This known system was then used to study the complexes of 1,10-phenanthroline with other metals. The log βn values found for the over-all stoichiometric stability constants are as follows: Ag, 5.02, 12.07; Mn, 3.88, 7.04, 10.11; Cd, 5.93, 10.52, 14.30; Zn, 6.83, 12.05, 16.92. The stoichiometric stability constants determined for copper are log k2 = 6.42 and log k2k3 = 11.05."
Date: October 25, 1962
Creator: Dale, John M. & Banks, Charles V.
Partner: UNT Libraries Government Documents Department
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The Scandium-Yttrium and Scandium-Zirconium System

Description: Technical report. From Abstract : "The scandium-yttrium and scandium-zirconium were studied by thermal and x-ray methods. Both systems are characterized by complete solid solubility in the low temperature hexagonal form and in the high temperature bcc form. In the Sc-Y system, there is a minimum in the solidus at 50 at. pct and 1365°C, while the solidus in the Sc-Zr system follows a nearly straight line relationship between the melting point of scandium and zirconium. There is a minimum in the temperature of transition from hexagonal to bcc in the Sc-Y system at 43 at. pct Y and 1175°C; while the temperature of transition is raised in the Sc-Zr system to a maximum of 1415°C at 30 at. pct Zr."
Date: October 26, 1962
Creator: Beaudry, B. J. & Daane, A. H.
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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The Weighting of Intensities

Description: Technical report. From report : "The method of least squares refinement is based on the prediction of the theory of errors that, if the errors of the observed structure factors follow the Gaussian distribution, the most nearly correct atomic parameters will be those which result in the minimization of the residual R = Σi [√wi(|Fo| - |Fc|)i]2."
Date: December 13, 1962
Creator: Hershaft, Alex & Corbett, John D.
Partner: UNT Libraries Government Documents Department
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The Crystal Structure of Bismuth Subchloride

Description: Technical report. From Abstract : "The stoichiometric formula of the lower chloride in the BiCl3-Bi system has been established as Bi12Cl14 (BiCl1.167) through a dingle crystal, X-ray determination of its structure. ... Previous studies of the Bi-Cl3-Bi system are re-examined in the light of the structural results."
Date: January 10, 1963
Creator: Hershaft, Alex & Corbett, John D.
Partner: UNT Libraries Government Documents Department
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Thermodynamics of Formation of ThMg2

Description: Literature review on the discovery, experiments on, and applications of the compound ThMg2.
Date: January 1963
Creator: Novotny, D. B. & Smith, J. F.
Partner: UNT Libraries Government Documents Department
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The Crystal Structure of Bis(Meta-Chlorobenzoyl) Methane

Description: Technical report. From Abstract : "The crystal structure of bis(meta-chlorobenzoyl) methane has been determined by three dimensional anisotropic least squares refinement of scintillation counter data. The molecule was found to be nearly planar with a maximum deviation from the least squares molecular plane of 0.068Å and an average deviation of 0.023Å. Fourier transform techniques to locate phenyl rings provided the key to the structure determination. The intramolecular bond distances and thermal parameters of the oxygen atoms support a resonant, enol ring with a symmetric, intramolecular hydrogen bond. The structure confirms conslusions from the structure of bis(meta-bromobenzoyl) methane where the symmetry of the molecule was forced by the crystal symmetry."
Date: December 13, 1962
Creator: Engebretson, Gordon R. & Rundle, R. E.
Partner: UNT Libraries Government Documents Department
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The Solubility of Holmium in Copper, Silver, and Gold

Description: From Abstract: "The solid solubility of holmium in copper, silver, and gold was determined using metallographic techniques. The composition of the first intermetallic compound in these systems was found to be Cu4Ho, Ag7Ho2, and Au3Ho. These compounds form eutectics with the solvent metals which melt at 868, 787, and 778°C respectively."
Date: January 1963
Creator: Wunderlin, W. J.; Beaudry, B. J. & Daane, A. H.
Partner: UNT Libraries Government Documents Department
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Solution of Metals in Their Molten Salts. Some Manganese, Chromium, Uranium and Antimony Systems

Description: Technical report. From Abstract : "Preparations of high purity MnCl2, CrCl2, CrI2, UBr4, UI3 and Sb4S3 are described; the melting points obtained for CrI2 (868°) and Sb2S3 (559.5°) are significantly higher than previously reported. The small solubilities of manganese and chromium in the respective halides studied were characterized primarily by the depression of the freezing points of the salts by excess metal."
Date: January 1963
Creator: Corbett, John D.; Clark, Ronald J. & Munday, Theodore F.
Partner: UNT Libraries Government Documents Department
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Niobium-Tin-Aluminum Alloy Studies

Description: From Abstract : "A proposed constitutional diagram was developed from equilibrium data obtained for the niobium-tin binary alloy system. ... Alloying Nb3Sn with Nb3Al appears to raise the zero field superconducting transformation temperature of Nb3Sn slightly."
Date: February 1963
Creator: Ellis, Thomas Gordon & Wilhelm, Harley A.
Partner: UNT Libraries Government Documents Department
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Gamma Ray Efficiencies for Well Type Scintillation Crystals

Description: From Abstract : "Gamma ray efficiencies for various sized well type NaI(Ti) crystals have been calculated using an IBM 704 digital computer. The adjustable parameters in the program are the gamma ray energy, the heights and diameters of the crystal and the well, the thickness of the well lining, and the positions of the (point) source inside the well. Some typical results are presented in graphical form."
Date: February 8, 1963
Creator: Dingus, Ronald S. & Stewart, M. G.
Partner: UNT Libraries Government Documents Department
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Least Structure Solution of Photonuclear Yield Functions

Description: From Abstract : "A new method for the solution of experimental photonuclear yield functions for cross sections is presented. ... The resulting cross sections are compared to the assumed cross sections used to derive the trial yield function."
Date: 1963
Creator: Cook, B. C.
Partner: UNT Libraries Government Documents Department
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Acid-Base Reactions in Fused Salts. Dichromate-Bromate Reaction

Description: Technical report. From Abstract : "The reaction of Lewis acid and base, Cr2O7= and BrO3_, in fused KNO3 - NaNO3 mixtures has been shown to involve an equilibrium followed by a slow decomposition to gaseous products."
Date: February 1963
Creator: Duke, F. R. & Schlegel, James
Partner: UNT Libraries Government Documents Department
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