Technical Report Archive & Image Library (TRAIL) - 288 Matching Results

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Gas Plated Coatings on Metals and Alloys : Progress Report No. 5

Description: The object of the work done during the month of June has been to assure that deposition of chemically pure chromium metal by gas plating, both by itself, or as a component of nickel-chronium and/or other alloys.
Date: July 6, 1953
Creator: Nack, Herman; Bulloff, Jack J. & Whitacre, John R.
Partner: UNT Libraries Government Documents Department
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Gas Plated Coatings on Metals and Alloys : Progress Report No. 6 and Final Report

Description: The object of the work performed under this contract was to investigate the possibility of gas plating copper base metal with (a) pure chromium metal from chromium hexacarbonyl vapor; (b) chromium-nickel plating from a mixture of chromium hexacarbonyl and nickel tetracarbonyl. The object of the work performed during the final month was to confirm the fact that the gas plating of chromium metal and chromium-nickel laminates free from nitrides, oxides and carbides was practical.
Date: June 5, 1953
Creator: Nack, Herman; Bulloff, Jack J. & Whitacre, John R.
Partner: UNT Libraries Government Documents Department
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Genetic Resistance to X-Irradiation in Mice

Description: A comparison was made of the effects of X-irradiation on mice of the high leucocyte (LCH) count strain and low leucocyte count strains. Among 30-day old mice, the LCH strain had a significantly lower mortality after irradiation, but in five-month old mice there was no difference between strains. Weight changes after irradiation do not differ between strains, in either age group. Leucocyte counts of both strains drop to the same level several days after irradiation. Mortality, changes in leucocy… more
Date: 1955
Creator: Swanson, Harold Dueker; Leone, Charles A. & Weir, J. A.
Partner: UNT Libraries Government Documents Department
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The Grüneisen Parameter for an Einstein Solid and Under Finite Strain

Description: The Grüneisen constant, as evaluated from the equation of state, is obtained for an Einstein solid. the presence of a state of finite hydrostatic pressure is taken into account explicitly by means of Murnaghan's theory of finite strain, to obtain the Grüneisen parameter's on the Debye and Einstein models. Results are identical in the two cases with the corresponding values obtained without use of the formal theory of finite strain.
Date: September 26, 1955
Creator: Gilvarry, J. J. (John James), 1917-
Partner: UNT Libraries Government Documents Department
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Grüneisen's Law and the Fusion Curve at High Pressure

Description: A method to determine the correction to Grüneisen's law corresponding to the effect of the electrons at high pressure. It is assumed that the lattice contribution to the pressure is small and that the equation of state of the solid can be approximated by results of the statistical Thomas-Fermi atom model for the electron pressure.
Date: April 11, 1955
Creator: Gilvarry, J. J. (John James), 1917-
Partner: UNT Libraries Government Documents Department
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The Heat of Combustion of Calcium

Description: Calorimetric combustions of calcium metal were conducted at an initial temperate of 25 degree under an oxygen pressure of 50 atm. The energy of combustion under these conditions was to be 15,649 joules/g. The corresponding standard heat of formation of the oxide from the elements is calculated to be -628.63 +- 0.99 kjourles/mole. this value if 1.1% more positive than the previous accepted value.
Date: 1954
Creator: Huber, Elmer J., Jr & Holley, Charles E., Jr.
Partner: UNT Libraries Government Documents Department
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Heat Transfer Fluids for Fuel Element Cans

Description: The maximum temperature in the interior of the fuel element could be greatly reduced by incorporating a liquid between the fuel element and the outer can to increase-heat transfer rates. It is of interest to consider what liquids would be chemically compatible with graphite and the actinide carbides. Elements which melt below 1100 and boil above 1400 deg C that form no stable solid carbides, include Cu, Ga, TI, Ge, Sn, Pb, Sb, Bi, and compounds include GeP, GeS, GaP, Ga/sub 2/S, GaTe, GaAs, SnT… more
Date: August 4, 1959
Creator: Brewer, Leo, 1919-2005
Partner: UNT Libraries Government Documents Department
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The Helium Cooled Loop in the GETR

Description: The General Electric Test Reactor (GETR) facility is designed to irradiate the fuel specimens in a helium-cooled environment at 800 degree F and pressures from 315 to 400 psig. Thermal neutron fluxes in the fuel are of the order of 3 x 10(13) mv and the induvial test pieces, of which there are three in each facility tube, generate five kilowatts at heat fluxes slightly over 200,000 Btu per hour per square foot. Five facility tubes are provided in the reactor pool. Separate coolant lines are bro… more
Date: 1959
Creator: Hausman, R. F.
Partner: UNT Libraries Government Documents Department
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High Altitude Cosmic Ray Neutron Intensity Variations

Description: Three groups of balloon flights carrying unshielded boron trifluoride counters were made from geomagnetic latitudes 10.1°N, 55.1°N, and 88.6°N. From the data obtained, curves of slow-neutron intensity versus atmospheric depth for depths less than 700 millibars are plotted. The mean absorption lengths for neutrons in the equilibrium portion of the atmosphere were found to be [formula]. The depths of the neutron intensity maxima were found to be [formula]. From these results and those of other in… more
Date: July 1, 1955
Creator: Soberman, Robert K.
Partner: UNT Libraries Government Documents Department
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High-Dielectric-Constant Materials as Capacitor Dielectrics : a Study in Dielectric Spectroscopy

Description: A fundamental study is presented comparing the electric properties for materials of "normal" dielectric constant (Al/sub 2/O/sub 3/ and MgTiO/sub 3/) with those of high dielectric constant (TiO/sub 2/, CaTiCO/sub 3/, SrTiO/sub 3/, STABa/sub 0.65Sr/sub 0.35/! STATiO/sub 3/, and BaTiO/sub 3/). Single crystals and ceramics, as far as available, were investigated from d-c to the microwave range as function of time, temperature, field strength, and prehistory. Three types of relaxation spectra were … more
Date: December 1959
Creator: Von Hippel, Arthur R. (Arthur Robert), 1898-2003 & Westphal, W. B.
Partner: UNT Libraries Government Documents Department
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High-Energy Electron Scattering and the Charge Distribution of Selected Nuclei

Description: Experimental results are presented of electron scattering by Ca, V, Co, In, Sb, Hf, Ta, W, Au, Bi, Th, and U, at 183 Mev and (for some of the elements) at 153 Mev. For those nuclei for which asphericity and inelastic scattering are absent or unimportant, i.e., Ca, V, Co, In, Sb, Au, and Bi, a partial wave analysis of the Dirac equation has been performed in which the nuclei are represented by static, spherically symmetric charge distributions. Smoothed uniform charge distributions have been ass… more
Date: October 1955
Creator: Hahn, Beat & Ravenhall, D. G.
Partner: UNT Libraries Government Documents Department
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High Energy Storage Ceramic Capacitor. Quarterly Report No. 4 [for] August 19, 1957 -- December 31, 1957

Description: The chief purpose of this contract is the development of ceramic materials with high dielectric constant and high dielectric strength values, and suitable for use of dielectrics in capacitors capable of storing large amounts of energy in small volumes. Work performed during the fourth quarter included (1) Material development and sample preparation; (2) Sample testing; (3) discussion of ceramic density measurements; (4) Optical studies of titanates; (5) Fabrication of large ceramics; and (6) Ca… more
Date: October 31, 1960
Creator: Lupfer, D. A.
Partner: UNT Libraries Government Documents Department
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High Energy Storage Ceramic Capacitor. Quarterly Report No. 6 for April 1, 1958 -- June 30, 1958

Description: The chief purpose of this contract is the development of ceramic materials with high dielectric constant and high dielectric strength values, and suitable for use of dielectrics in capacitors capable of storing large amounts of energy in small volumes. The principal features of work during this quarter have been research into the causes of variation in ceramic density, overcoming the problems of pressing large disks, and the development of fully-contoured medium-sized disks. Work performed duri… more
Date: 1958
Creator: Lupfer, D. A.
Partner: UNT Libraries Government Documents Department
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High Temperature Scaling Behavior of Zirconium : Second Technical Progress Report

Description: This technical report summarized studies in the high temperature scaling of zirconium, and covers the period from March 1, 1955 to December 15, 1955. One technical progress report covered the progress of the investigation from April 1, 1953 to march 1, 1955. The previous work was concerned largely with the scaling behavior of zirconium in air, pure oxygen, pure nitrogen and mixtures of oxygen and nitrogen. The major finding arising from these studies was that the peculiar scaling behavior of zi… more
Date: December 1955
Creator: Green, H. M.; Evans, E. B. & Baldwin, William Marsh
Partner: UNT Libraries Government Documents Department
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A Human Engineering Guide to the Arrangement of Elements on a Control Panel

Description: This memorandum is a compilation of general information concerned with the arrangement of elements on a control panel. Arrangement considerations that lead to to improved ease and accuracy of operation are presented to assist the engineer in designing new control panels.
Date: December 10, 1954
Creator: Williams, H. L.
Partner: UNT Libraries Government Documents Department
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Hyperfragments produced by K^o mesons from K^+ charge exchange

Description: "Stacks of C-2 emulsion were exposed to neutral k mesons. These were produced by the charge exchange, in dense material, of K^+ mesons from the Berkeley Bovatron. Hyperfragments were found in these stacks. It is concluded that the hyperfragments were produced by K^o2 mesons in the K^o mode. These were generated by the decay of the K^o1 component of the K^o beam as would be expected from the Gell-Man Pais scheme. Other possible mechanisms of production of the hyperfragments have been considered … more
Date: unknown
Creator: Baldo-Ceolin, M.; Huzita, H.; Natali, S.; Camerini, U. & Fry, W. F.
Partner: UNT Libraries Government Documents Department
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Ideal Gas Thermodynamic Properties of Detonation Products

Description: The ideal gas thermodynamic functions were computed at various temperatures in the temperature range from 300 degree to 6000 degree Kelvin for some of the molecular species of interest in detonation performance calculations. The molecular species are composed of the atoms chosen from among the following: Al, B, Be, C, Cl, F, H, Li, Mg, N, and O. The method of least squares was used to determine the parameters of a cubic equation which expresses the dependence of these thermodynamic functions on… more
Date: September 1959
Creator: Mader, Charles L.
Partner: UNT Libraries Government Documents Department
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The Influence of Point Defects on the Mechanical Properties of Lithium Fluoride : First Technical Report

Description: Lithium fluoride crystals were quenched into silicone oil from near the melting point. The return to an equilibrium structure during annealing was observed by means of mechanical tests and etching techniques. Crystals containing three levels of impurity, zone refined, commercially pure, and doped with 0.05 mole per cent magnesium, were used in order to separate the effects of foreign ions from those of thermal vacancies. The changes of mechanical properties produced by quenching and by subseque… more
Date: January 1960
Creator: Nadeau, J. & Washburn, J.
Partner: UNT Libraries Government Documents Department
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The Influence of the Molecular Mean Free Path on the Performance of Hydrodynamic Gas Lubricated Bearings

Description: "A modified Reynolds equation is derived for gaslubricated hydrodynamic bearings operating under ''slip flow'' conditions. Closed analytical solutions are given for a Rayleigh-type step-bearing and an inclined plane slider bearing for the case of two-dimensional flow. The influence of the molecular mean free path on the performance of bearings of arbitrary form is obtained by means of a small parameter, perturbation technique"
Date: unknown
Creator: Burgdorfer, Albert
Partner: UNT Libraries Government Documents Department
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Infrared Spectra and Structure of the Crystalline Sodium Acetate Complexes of U(VI), Np(VI), Pu(VI), and Am(VI). A Comparison of Metal-Oxygen Bond Distance and Bond fFrce Constant in this Series

Description: Infrared spectra of solid NaXO2(Ac)3, with X=U, Np, Pu, and Am, have been observed. From the symmetric and asymmetric stretching frequencies of the O-X-O groups, approximate X-O force constants have been calculated and were found to decrease in the order kU—O>kNp—O>kPu—O> kAm—O, the respective values being about 0.705, 0.698, 0.675, and 0.612 megadyne/cm. From the cell constants for NaXO2(Ac)3 it is apparent that the X-O bond distance decreases in the same order—RU—O>RNp—O>RPu—O>RAm—O. Thus, a … more
Date: January 31, 1955
Creator: Jones, Llewellyn H., 1919-
Partner: UNT Libraries Government Documents Department
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Injection Trajectories and Beam Matching for the Cambridge Electron Accelerator

Description: "ABS>Injection trajectories were calculated for different injection conditions for the Cambridge Electron Accelerator, considering also the effect of magnetic fringing fields. The general problem of matching the emittance of the linac to the acceptance of the synchrotron in the transversal phase space is considered, and it is shown that this can be done by a set of two quadrupole lenses. In order to eliminate rudial betatron oscillations due to energy deviations of the injected particles, a pul… more
Date: April 17, 1957
Creator: Steffen, Klaus G.
Partner: UNT Libraries Government Documents Department
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The Input Admittance of a Ring Circuit

Description: "A ring circuit is a succession or two-port networks and at least one three-port network, each feeding the next at one port and the last feeding the first so that the sequence closes on itself leaving at least one input port. The input admittance is derived in terms ef various matrices describing the circuit for one- and two-input port rings."
Date: January 22, 1958
Creator: Rees, J. R.
Partner: UNT Libraries Government Documents Department
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Intermediary Metabolism of the Photosynthetic Bacteria. Final Report

Description: The primary purpose of these researches was to clarify the various functions of organic substrates in bacterial photosynthesis. The following aspects were investigated; (1) metabolic pathways under photosynthetic and oxidative conditions, (2) energy transfers occurring during the metabolism in cell free extracts, and (3) the relationship between photosynthetic rate and light intensity for selected organic substrates. The results of these investigations were summarized in a paper entitled "The A… more
Date: November 1, 1955
Creator: Siegel, Jack M.
Partner: UNT Libraries Government Documents Department
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