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The Absolute Abundance of the Chromium Isotopes in Some Secondary Minerals

Description: 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.
Partner: UNT Libraries Government Documents Department
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Acute Intravenous and Intraperitoneal Toxicity Studies on Sodium Pentaborate Decahydrate and Sodium Tetraborate Decahydrate

Description: This technical report describes the toxicity observations on mice of varying borate-glucose molar ratios and relative potencies (p) (4) for the pentaborate and tetraborate drug. This report outlines the methods and results of this experiment and provides a discussion of the results.
Date: 1962
Creator: Easterday, Otho D. & Hamel, Helen
Partner: UNT Libraries Government Documents Department
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"Ages" of the Sikhote Alin Meteorite

Description: The potassium-argon age of the Siknote Alin iron raeteorite was determined. The value is 1.7 plus or minus 0.2 x 10/sup 9/ years. Previous lead data suggest an age of 4.6 x 10/sup 9/ years. The date of solidification may be the sum of these two ages. (auth)
Date: January 1, 1962
Creator: Sisher, D. E.
Partner: UNT Libraries Government Documents Department
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LOS ALAMOS NUCLEAR ROCKET PROJECT ROVER

Description: Developments in Project Rover are reviewed. History, considerations in reactor design, materials problems, and reactor construction and test are discussed. (M.C.G.)
Date: January 1, 1962
Creator: MacMillan, D.P.
Partner: UNT Libraries Government Documents Department
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AN ANALYSIS OF H$sup 3$-THYMIDINE DISTRIBUTION THROUGHOUT THE SHOOT APICAL MERISTEM OF ARABIDOPSIS THALIANA (L.) HEYNH

Description: Sequential autoradiographed sections through the shoot apical meristem of Arabidopsis thaliana treated for six hours with a solution of H/sup 3/- thymidine in combination with 0.1% Tween 20 and dilute mineral solution reveal a differential pattern of labeling, indicative of differential rates of DNA synthesis. This pattern corresponds to the histological zonation of the apex and reveals a sub-apical block of cells in which the amount of incorporation is significantly lower than in the adjacent flank cells. (auth)
Date: January 1, 1962
Creator: Brown, J. A. M.; Miksche, J. P. & Smith, H. H.
Partner: UNT Libraries Government Documents Department
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The Angular Dependence of Thermal Neutron Spectra in Lattices

Description: This technical report discusses techniques that have been developed for "computing the angular thermal flux spectrum emerging from a lattice. These methods are applied to water lattices and it is found that the computed spectra are sensitive to the geometrical description of the lattice, but insensitive to the anisotropic scattering by water. Comparisons with measured spectra indicate that corrections for gradients and the finite size of the experimental lattice are important." -- from abstract (p. 3).
Date: January 1962
Creator: Honeck, Henry C. & Takahashi, Hiroshi
Partner: UNT Libraries Government Documents Department
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Angular Distribution of Relativistic Atomic K-Shell Photoelectrons

Description: 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.
Partner: UNT Libraries Government Documents Department
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Automatic Recording Surface Balance

Description: 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.
Partner: UNT Libraries Government Documents Department
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BEAM CURRENT INTEGRATOR

Description: The design and operation of a beam current integrntor are described, and the theory of operation is discussed. The instrument has two channels. The console channel is designed to measure the accumulation of charge received by a target during a period of a day no matter what the range used in the experimenter's chaanel. An analysis indicated that this unit will measure the accumulation of charge by a target to an accuracy of 0.1215% assuming that the constant error due to shorting the integrating capacitor is accounted for. The instrument is ranged to haadle from 0.5 to 500 mu a of beam current. (M.C.G.)
Date: January 1, 1962
Creator: Jacobs, J.
Partner: UNT Libraries Government Documents Department
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The Behavior of Iodine in Graphite

Description: No Description Available.
Date: January 1, 1962
Creator: Salzano, F. J.
Partner: UNT Libraries Government Documents Department
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Bentonite Deposits of the Northern Black Hills District Wyoming, Montana, and South Dakota

Description: From abstract: The northern Black Hills bentonite mining district includes parts of Crook County, Wyo., Carter County, Mont., and Butte County, S. Dak. Within this district, many beds of bentonite occur interspersed with sedimentary strata of Cretaceous age that have an average total thickness of about 3,000 feet and consist chiefly of marine shale, marl, and argillaceous sandstone. The bentonite beds occur in formations ranging upward from the Newcastle sandstone to the lower part of the Mitten black shale member of the Pierre shale. Tertiary (?) and Quaternary deposits of gravel, sand, and silt are present on extensive terraces, and deposits of such materials also extend along stream courses in all parts of the district.
Date: 1962
Creator: Knechtel, Maxwell M. & Patterson, Sam H.
Partner: UNT Libraries Government Documents Department
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Bovine Thyroid I 131 in the Absence of Atmospheric Nuclear Weapons Tests

Description: Summary. Cattle in Reno, Nevada, exhibit a constant very low concentration of I 131 in their thyroid glands in the absence of known releases of I 131 to the atmosphere. This concentration is about 1 picocurie per gram of fresh thyroid tissue. ; This I 131 appears to originate below the tropopause
Date: 1962
Creator: Blincoe, Clifton & Bohman, V. R.
Partner: UNT Libraries Government Documents Department
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Calculation of Distance Factors for Power and Test Reactor Sites

Description: >Reference information and guidance on procedures and basic assumptions related to reactor siting are presented which can be used to calculate distance requirements consistent with current siting practices. A single method of competing distances and exposure for a general class of reactors is giveo. (J.R.D)
Date: January 1, 1962
Creator: DiNunno, J. J.; Anderson, F. D.; Baker, R. E. & Waterfield, R. L.
Partner: UNT Libraries Government Documents Department
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CALCULATION OF THE PULSE-HEIGHT RESPONSE OF NaI(Tl) SCINTILLATION COUNTERS

Description: A Monte Carlo calculation to determine the pulse-height response of NaI(Tl) scintillation counters to gamma rays is described. Comparisons of several calculations with experiments using 3-in.-dia by 3-in.-high crystals for source energies from 0.32 to 7.48 Mev are presented and show good agreement at large pulse heights. At small pulse heights the calculations underestimated the experimental data and indicated that background radiation can contribute significantly to the experimental results. An extensive series of calculations are reported for a 3-in.-dia by 3-in.high crystal using monoenergetic, point isotropic sources placed on the crystal axis l0 cm from one end. The source energy ranged from 0.l to 6.0 Mev in this series of calculations. (auth)
Date: January 1, 1962
Creator: Zerby, C.D. & Moran, H.S.
Partner: UNT Libraries Government Documents Department
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THE CALORIMETRY OF COMBUSTIONS AND RELATED REACTIONS: INORGANIC REACTIONS

Description: A review is presented of calorimetric measurements of the heats of combustion and other reactions. The precision of the measurements is discussed, and possible sources of error in combustion calorimetry are considered. Measurement of the heats of formation of the oxides and other compounds is also discussed. Recent developments in calorimetry are described briefly, including the rotating bomb calorimeter, use of gases other than oxygen, fluorine bomb calorimetry, and combustion bomb with window. Tables are presented of the heats of reactions measured by oxygen bomb calorimetry, nitrogen bomb calorimetry, and fluorine bomb calorimetry. (D.L.C.)
Date: January 1, 1962
Creator: Holley, C.E. Jr.
Partner: UNT Libraries Government Documents Department
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