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Occurrence of Technetium in Nature : Final Report for the Period November 1, 1954 to August 31, 1955

Description: Twelve neutron activation analyses for naturally occurring technetium-98 were performed. Positive results were obtained in ten cases. Precautions were taken to avoid interference by molybdenum and technetium-99. the cross section for the reaction [formula] as found to be equal to 4 +- 2 mb for the neutron spectrum of the vertical thimbles of the Argonne CP-5 reactor. The chemical state of molybdenum (VI) in basic solution was studied by an anion-exchange technique. Evidence was obtained for the… more
Date: September 1, 1955
Creator: Anders, Edward, 1926-
Item Type: Refine your search to only Report
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.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Measurement of Respiratory C14O2 Activities

Description: We describe in this technical report a reasonably simple, easily constructed, system that allows the collection of time-course information regarding respiratory C14O2 with little special effort on the part of the investigator. The method described is centered around a small metabolism cage for the animal and a novel technique for counting C14O2. In essence, an air steam containing C14O2 is brought part the window of a think end window G.M. tube contained in a lead shield. activity detected by t… more
Date: 1955
Creator: Bruggen, J. T. van, 1913-1989 & Hutchens, Tyra T.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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A Cloud Chamber Study of the Secondary Particles from Locally Produced Penetrating Showers

Description: The present experiment was undertaken as an attempt to throw more light on the decay processes that had been observed prior to the summer of 1952, as well as to investigate any new decay processes that might manifest themselves. The source of high energy primary particles was to be the cosmic ray beam, so a detector of locally produced high energy penetration showers was used. In order to be able to detect effectively low energy photons and low energy secondaries from particles reaching the end… more
Date: September 1955
Creator: Harmon, Norman Frederick
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Progress Report No. 37 for the Period June 1, 1955 through August 31, 1955

Description: This is the thirty-seventh progress report of the Laboratory for Nuclear Science at the Massachusetts Institute of Technology. Progress during the period of June 1, 1955 through August 31, 1955 is reported on: (1) Chemistry of the fission elements group, (2) Nuclear chemistry (inorganic) group, (3) Nuclear chemistry (organic) group, (4) Cosmic ray group, (5) Elementary particle scattering group, (6) neutron physics group, (7) ONR generator group, (8) Radioactivity group, (9) Cyclotron group, (1… more
Date: August 31, 1955
Creator: {{{name}}}
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Equation of State of Water on the Thomas-Fermi Model

Description: Two methods are described for extending the Thomas-Fermi model of a compressed atom to molecules or mixtures of the type Z Zn. The methods are applied to H2O at zero temperature to determine pressure and internal energy as functions of the density, the position of the protons relative to the oxygen nucleus, and the electrostatic potential distribution within the molecule.
Date: October 24, 1955
Creator: Latter, A. & Latter, R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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An Investigation of Scaling of Zirconium at Elevated Temperatures : Quarterly Status Report No. 10; Sept. 2, 1955 to Dec. 2, 1955

Description: As previously reported, zirconium undergoes large dimensional increases after scaling in air in a critical temperature range, 700 degree-1050 degree C. This finding was observed with specimens of a constant thickness (0;062 in.) To study the thickness effect, a number of specimens ranging in thickness from 0.020 to 0.200 in. were scaled in air at a temperature (900 degree C) where the growth is a maximum for a given time. Both cold rolled iodine sheet and forged iodide bar stock were used. to d… more
Date: December 8, 1955
Creator: Barrett, Charles A.; Evans, E. B. & Baldwin, W. M., Jr.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Underground Movement of Radioactive Wastes

Description: The theory and preliminary laboratory investigations presented in this technical report were intended to examine the general feasibility of injection disposal of radioactive wastes and to establish an understanding of the phenomena governing the travel of trace chemicals through natural porous media. Detailed studies of fluid velocity variations resulting from density differences between the injected and displaced liquids have been made. the ion exchange studies have been limited to strontium a… more
Date: August 1, 1955
Creator: Kaufman, Warren J., 1922-; Orcutt, Richard G., 1924- & Klein, Gerhard, 1918-1987
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Media for Air Cleaning and Air-Assay Purposes : Final Summary Report for Period Ending December 31, 1954

Description: Work was completed on the high-temperature, high efficiency air filter. Technical assistance was given at a large-scale, privately financed run of an all-glass medium. Full-size filers have been produced in quantity and are offered by manufacturers; it is considered that commercial manufacture has been established. A survey was made of air sampling practices at 37 laboratories. Analysis of the survey results indicated that 22 different kinds of air-sampling filer media were in use among the lab… more
Date: October 3, 1955
Item Type: Refine your search to only Report
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-
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Liquid Metal Level Instrument

Description: Theory of operation and test results are given for a resistance type of liquid metal level instrument. The voltage across a steel rod in the tank is amplified by a magnetic amplifier and indicated by a milliammeter. Temperature compensation is provided for tank temperatures up to 1000 F.
Date: March 18, 1952
Creator: Robinson, H.; Dows, L. H. & Droms, C. R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Semi-Annual Progress Report, September 30, 1955

Description: Progress is reported in studies on (1) injection tables, (2) radon escape from bone containing radium, (3) on the question of th228 translocation in Ra228 dogs, (4) further studies on the metabolism of Th228 and its daughters, (5) veterinary group report, (6) hematology observations, (7) biochemistry, (8) pathology and detailed radioautography report, (9) radioautographic studies of Pu and RdTh teeth, (10) effect of parathormone on the deposition of Pu in rats, (11) speculation on the toxicity … more
Date: September 30, 1955
Creator: University of Utah. Radiobiology Laboratory
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Rates of Convergence in Numerical Solution of the Diffusion Equation

Description: A basic technique in the design of a nuclear power reactor is to prescribe the dimensions and composition of a simplified model and to calculate the corresponding neutron flux and power distributions. Comparison of calculations for different models and of particular calculations to experimental results guides the physicist to a reasonable prescription. Until recently, the usual model had spherical or cylindrical symmetry. We have found it feasible to extend the methods to include a class of rea… more
Date: 1954
Creator: Stark, R. H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Precise Closed-Form Solutions of Some Mixed Boundary Value Problems of Plane Elasticity

Description: Precise solutions are given for the problem of the semi-infinite strip extending from x=0 to x=infinity, stress-free along the edges y= +-1, when the edge x=0 is subject (a) to a quadratic sheer displacement and zero normal stress, (b) to a cubic normal displacement and zero sheer stress. These are the two simplest (non-trivial) end problems of the semi-infinite strip, antisymmetric in y, that may be formulated. The corresponding symmetric problems (a) linear seer displacement and zero normal s… more
Date: 1954
Creator: Horvay, Gabriel, 1908- & Born, J. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Mass Spectrum of Methane and the Energy Levels of the Fragment Ions and Radicals

Description: A MO calculation of the electronic states of CH4, CH3, CH2, CH, and their respective ions provided the basis for the application of correlation rules to an analysis of the existing appearance potential data for methane. An interpretation of the methane mass spectrum has been proposed which is based on the high value of the heat of sublimation of carbon. It is shown that the excited electronic states of the molecule- and radical-ions are prominent in the decomposition reactions.
Date: July 1955
Creator: Krauss, Morris; Wahrhaftig, Austin L. & Eyring, Henry, 1901-1981
Item Type: Refine your search to only Report
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.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Chlorine Trifluoride-Hydrogen Fluoride System. Some Vapor Pressure and Conductance Measurements

Description: The possible existence of a stable complex between chlorine trifluoride and hydrogen fluoride made further study of this system desirable. We have therefore investigated the vapor pressures and specific conductances of solutions of hydrogen fluoride in chlorine trifluoride.
Date: 1957
Creator: Rogers, Max T.; Speirs, John L. & Panish, Morton B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Recrystallized Texture of Alpha Uranium

Description: Uranium was plastically deformed 90% at room temperature by unidirectional rolling to a foil 0.002-inches thick. Specimens were recrystallized in the alpha region and several pole figures obtained from 0 to 40 degrees. From these, the preferred orientation was found to be in a spread of idealized (11) [010] about [010].
Date: January 11, 1955
Creator: Seymour, W. & Duffey, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Sealing Radioactive Specimens in Glass Ampoules

Description: In studying the effect of neutron irradiation on certain kinds of metal wire, specimen storage was found to present a serious problem, since the specimens oxidized rapidly once removed from the protective atmosphere of the irradiation capsule. After trying several methods of storage it was found that sealing the radioactive samples in individual evacuated glass ampoules was best from both the standpoint of sample protection and minimum spread of radioactive contamination. The sealing technique … more
Date: 1955
Creator: Reynolds, Myron B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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The Iodine Pentafluoride-Hydrogen Fluoride System. Solid-Liquid Equilibria, Vapor Pressures, Molar Volumes and Specific Conductances

Description: Some properties of the iodine pentafluoride-hydrogen fluoride system have been investigated. The solid-liquid phase diagram show a eutectic point at -83.49 degree C. and 99.5 mole% hydrogen fluoride. The vapor pressures at 15 degree C show positives deviations from Raoult's law but no maximum vapor pressure was observed. There is a small decrease in volume on mixing, the maximum deviation from ideality being 6.6% at 90 mole% hydrogen fluoride. The specific conductance of pure iodine pentafluori… more
Date: 1955
Creator: Rogers, Max T.; Speirs, John L. & Panish, Morton B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Note on an Approximation Method of Brueckner, Levinson, and Mahmoud

Description: This note reports two calculation that we believe help to clarify the nature of the approximation made in the method Brueckner, et al, for the ground state of many-Fermion systems. The first is a formal calculation of their result for the energy in terms of two-body forward scattering amplitudes from elementary perturbation theory. We find that their result is obtained when one keeps only those terms in the perturbation expansion that depend on pair correlations. From this point of view the met… more
Date: 1955
Creator: Goad, Walter B., 1925-2000
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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