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Results:
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Amplitude and Phase Functions for the Revised Parameters of the Cambridge Electron Accelerator
"The phase and amplitude functions describing the betatron oscillations in the synchrotron are calculated using the revised parameters of the Cambridge Electron Accelerator. The results are given numerically and plotted in a graph for one machine period."
Date:
May 27, 1957
Creator:
Lanza, G.
System:
The UNT Digital Library
An error Analysis of R-C Timers
The results of this paper show that a variation is sensing voltage produces an error in timing which increases logarithmically with time interval. Also, variation in supply voltage produces the same type of errors, but the errors are decreased by the ratio of the sensing to supply voltage. An interesting conclusion from this analysis is that if the ratio of supply to sensing voltages is maintained constant, no change in timing will result.
Date:
August 27, 1954
Creator:
Stromberg, R. P. (Robert P.)
System:
The UNT Digital Library
A Transistorized Binary Counter for Extreme Environments
A transistorized binary counter circuit is described that operates over a temperature range of -65 degree F to +165 degree F. the supply voltage is 28 + 4 volts and the maximum trigger repetition rate is 5 kilocycles. the binary circuit is pre-settable and resettable by means of a switching arrangement that can be mechanized. Texas Instrument type 904 silicon transistors whose large signal current gain is 2.8 or greater at a -65 degree F can be used in this circuit.
Date:
May 27, 1955
Creator:
Marceau, J. E.
System:
The UNT Digital Library
Dispersion Strengthening of Iron-Aluminum Base Alloys: A Feasibility Study
The feasibility of improving the mechanical properties at 1700-1800°F of oxidation-resistant Fe-Al-Cr alloys by means of a refractory dispersion has been explored. A literature search was conducted, preliminary experimental determinations of properties of the alloy and its oxides were carried out, and certain mathematical relations between dispersion characteristics and metallurgical variables were derived. The results indicate that the alloys can be strengthened sufficiently by using a dispersion with an interparticle spacing of about 2-3 µ. High-temperature native oxides of the Fe-Al-Cr alloy consist largely of Al2O3 and in theory would serve as a satisfactory second phase.
Date:
December 27, 1960
Creator:
King, Blake
System:
The UNT Digital Library
Analysis of Uranium Fuel-Element Wafers from Atomics International for Uranium, Plutonium and Samarium
Five irradiated and five unirradiated wafers were analyzed. Each wafer was analyzed for samarium by emission spectrography. The unirradiated wafers were analyzed for uranium by coulometric and potentiometric methods and for uranium isotopes by mass spectrometry. The irradiated wafers were analyzed for uranium and plutonium by coulometric methods, for plutonium isotopes by the 256-channel alpha pulse analyzer, and for the isotopes of uranium and of plutonium by mass spectrometry. The methods of preparing wafers for analysis are discussed; the data are tabulated.
Date:
December 27, 1960
Creator:
Gaitanis, M. J.
System:
The UNT Digital Library
Unit Operations Section Monthly Progress Report September 1960
Measurements of the interfacial tension between water and tributyl phosphate solutions were made for application to the analysis of Marengoni effect in solvent extraction. A 24 hr flame calcination run to product Th02 particles yielded 40% as product and 54% collected from the furnace walls and from a coarse particle trap. The elution rates of uranyl ion from Dowex 21K using sodium nitrate could be approximated by assuming apparent diffusion coefficients of 1.67 x 10^-7 and 1.18 x 10 ^-7 cm^2/sec, respectively for 960µ and 820µ resn while the corresponding apparent coefficients using sodium chloride were 1. 78 x 10^-7 and 1.27 x 1-^-7 cm^2/sec. The reacting surface of ThO2 Universal Match Co. pellets was determined as a function of fraction dissolved. The lead scews and companion nuts from both the multipurpose saw and dejacketing machine were coated with a baked on lubricant. In Zirflex decladding studies using 4.5 M NH4F - 0.5 M NH4NO3, the average dissolution rate of Zircaloy-2 was decreased only 10% when the overhead condensate was withdrawn and 1.0 M NH4OH was added to maintain the volume.
Date:
January 27, 1961
Creator:
Whatley, M. E.; Haas, P. A.; Horton, R. W.; Ryon, A. D.; Suddath, J. C. & Watson, C. D.
System:
The UNT Digital Library
Multiplication Measurements with Highly Enriched Uranium Metal Slabs
A series of neutron multiplication measurements with arrays of 1 by 8 by 10 in. slabs of 93.4% U235-enirched uranium metal have been made to provide data from which safety criteria for the storage of these fissile units can be established. Each slab contained 22.9 kg of U235. A maximum of 125 unites was assembled. The arrays studied were cubic lattices of the units and were usually parallelepipedal in shape.
Date:
July 27, 1959
Creator:
Mihalczo, J. T. & Lynn, J. J.
System:
The UNT Digital Library
Annual Report of the Boy Scouts of America: 1944
Annual report submitted by the Boy Scouts of America to Congress describing highlights from 1944 activities, organizational leadership, and other information about scouting programs.
Date:
March 27, 1945
Creator:
Boy Scouts of America
System:
The Portal to Texas History
Insured Losses Resulting from the February 2021 Texas Winter Weather Event: July 2021
Report issued as part of the Texas Department of Insurance catastrophe statistical data plan after the electrical grid failure during the 2021 winter storm. It provides a summary of submitted data related to property insurance, automobile insurance, and all other lines of insurance.
Date:
December 27, 2021
Creator:
Texas. Department of Insurance.
System:
The Portal to Texas History
Insured Losses Resulting from the February 2021 Texas Winter Weather Event: April 2021
Report issued as part of the Texas Department of Insurance catastrophe statistical data plan after the electrical grid failure during the 2021 winter storm. It provides a summary of submitted data related to property insurance, automobile insurance, and all other lines of insurance.
Date:
October 27, 2022
Creator:
Texas. Department of Insurance.
System:
The Portal to Texas History
Calculated Scattering Kernels For Light Water at 23C, 42C, 61C, and 82C
This report contains a listing of the bound-proton kernels for neutron scattering which were calculated in conjunction with the USAEC Control Rod Materials Program.
Date:
May 27, 1962
Creator:
Kerr, B. A.
System:
The UNT Digital Library
Prediction of Two-Phase Flow From Mixing Length Theory
It is proposed in this report to describe a new two-phase flow mixing length model. It consists of treating the two-phase system as a continuous medium and applying to it the methods and assumptions so widely accepted in single-phase turbulent flow. Because it reduces a two-phase problem to an equivalent one in single-phase flow, the proposed model can be readily used to predict the effects of flow rate, channel geometry, and channel direction in two-phase flow.
Date:
December 27, 1960
Creator:
Levy, S.
System:
The UNT Digital Library
Preliminary Studies of the Adsorption of Uranium in a Resin-In-Pulp System
Data were obtained in non-flowing and flowing (continuous) batch adsorption systems to serve as a guide to the operating conditions that should be used in a resin-in-pulp adsorption system for the recovery of uranium from ores.
Date:
July 27, 1953
Creator:
Abrams, Charles S. & Kaufman, David
System:
The UNT Digital Library
Little Scrappy's Search: A Library Breakout
This report documents the "Little Scrappy's Search: A Library Breakout" project funded through the Dean's Innovation Grant. The final report describes the project activities, budget, project outcomes, best practices, and future program continuity.
Date:
January 27, 2022
Creator:
Monahan, Jo; Newsom, Matina & Robson, Diane
System:
The UNT Digital Library
[Dallas Museum of Art proposal to the Edward and Betty Marcus Foundation]
A proposal to the Edward and Betty Marcus Foundation by the Dallas Museum of Art for the support of a program titled 'Learning to Look'.
Date:
September 27, 1994
Creator:
unknown
System:
The UNT Digital Library
[Academic Performance Report]
The official grade report of an aspiring candidate for the Marcus Fellows Program.
Date:
March 27, 1995
Creator:
unknown
System:
The UNT Digital Library
Analytical Chemistry Division Semiannual Progress Report For Period Ending October 20, 1955
The development of ionic methods for the determination of corrosive products in the highly radioactive Homogeneous Reactor (HR) fuels has been of major interest in the work of the Ionic Analyses Laboratory. Methods for the spectrophotometric determination of aluminum and for the polarographic determination of iron in HR fuels have been developed. The polarographic determination of molybdenum in uranyl sulfate solutions was studied. A polarographic method for the determination of zinc was developed. A fluorometric method for the determination of microgram amounts of fluoride was studied. Three organic reagents were investigated as precipitants for microgram quantities of zirconium in HR fuel. The automatic photometric titration technique was applied to the determination of thorium and of sulfate. A method was developed for the ion-exchange separation and potentiometric titration of cobalt. The ultraviolet absorption spectra of technetium and rhenium were studied.
Date:
December 27, 1955
Creator:
Kelley, M. T.; Susana, C. D. & Rooen, H. P.
System:
The UNT Digital Library
Products Produced in Batch Neutron Irradiation of Thorium
Calculated data and graphs describing the effects of batch thermal-neutron irradiation of thorium, the usual method of operation of heterogeneous reactors, are presented. The buildup and decay of U233, Pa233, other heavy isotopes, and fission products are considered on the basis of best available cross-section and fission-yield data. The effects of these irradiation products on the Thorex chemical separation process are indicated briefly.
Date:
December 27, 1955
Creator:
Gresky, A. T. & Arnold, E. D.
System:
The UNT Digital Library
Observations on a Zircaloy-Uranium-Aluminum System at High Temperatures
A brief series of experiments was performed to study the high temperature reaction of the Zircaloy-uranium-aluminum system at the request of Reactor Engineering Operation, Irradiation Processing Department. Knowledge of the high temperature behavior of this combination of materials is important to the evaluation of reactor behavior during possible accidental over-heating of a fuel channel.
Date:
May 27, 1960
Creator:
Scott, A. J.
System:
The UNT Digital Library
Heat Transfer Study for Self-Boiling Radioactive Wastes
The temperature characteristics associated with the handling of self-boiling radioactive wastes from the separations extraction processes in the Chemical Processing Department have necessitated several heat transfer studies. Earlier studies 1,2,3 defined the feasibility of self-concentration in existing waste storage facilities by determining the rate of heat generation from the decay of stored fission products and by defining the rate of heat loss from existing storage tanks to the surrounding soil.
Date:
April 27, 1959
Creator:
Stivers, H.W. & Taylor, H.W.
System:
The UNT Digital Library
Measured Vibrational Frequency Distributions of Ni, V, Ti, and Ti.67-Zr.33
The BNL cold neutron facility has been used to obtain inelastic scattering cross section data from three first-row transition elements, titanium, vanadium, and nickel, and a random binary alloy Ti.67-Zr.33. From the data, we have computed vibrational frequency distributions exhibit peaks corresponding to major critical points. A comparison of the distributions from the different samples leads to the following conclusions: 1) The shape of the frequency distributions of the b.c.c. metal (V) and f.c.c. metal (Ni) are remarkably similar, the relative positions of the critical points being the same for both; 2) The frequency distribution of the h.c.p. metal (Ti), which has two atoms per primitive cell, shows structure corresponding to acoustical and "optical" modes of vibration; 3) The titanium-zirconium alloy has the h.c.p. structure, and its experimental frequency distribution is similar to that of titanium, except at low frequencies where alloying with the heavier mass zirconium atoms tends to smear out the peaks corresponding to acoustical modes. Measured frequency distributions were obtained for the titanium-zirconium alloy slightly above and below the critical temperature for the phase transition to b.c.c. structure. The frequency distributions in the two phases are different, the most striking feature being a shift of the high …
Date:
September 27, 1963
Creator:
Mozer, B.; Otnes, K.; Otnes, K. & Palevsky, H.
System:
The UNT Digital Library
Measurements of Neutron Resonance Parameters
The subject of this paper is the experimental and technical aspects of the measurements of nuclear resonance parameters. I will confine my remarks to those reactions induced by low energy neutrons, i.e. neutrons of less than approximately 100 kilovolts. The bulk of these measurements have been performed by neutron time-of-flight techniques, and I will direct my attention to these techniques. The first half of this discussion will concern the apparatus with which these measurements are made; the second part will be a discussion of the various experiments by which these parameters are measured, with an emphasis in both areas of discussion on relatively recent developments in the field.
Date:
September 27, 1963
Creator:
Chrien, R. E.
System:
The UNT Digital Library
Internal Target System and Induced Radioactivity at the AGS
When the Brookhaven AGS started operation in the summer of 1960 very little experience with targeting in strong focusing proton synchrotrons was available. While it was evident that targeting techniques would differ markedly from those used in weak focusing machines, only actual running experience would set the proper parameters for a truly satisfactory targeting system. It was, therefore, an advantage that temporary targeting devices were used initially. Work on a more permanent system was not started until the summer of 1961, and the first component of the system installed in January 1962. While further refinements are still continuing the essential features of this targeting system have now sufficiently proven themselves in actual operation to remain unchanged. This system in its present form is the subject of the first portion of this paper.
Date:
September 27, 1963
Creator:
Faust, J.; Flatau, C.; King, R. & Polk, I.
System:
The UNT Digital Library
Medical and Health Physics Quarterly Report July, August, September, 1953
Quarterly report on the metabolic properties of various materials, biological studies of radiation effects, health chemistry, health physics.
Date:
November 27, 1953
Creator:
University of California Radiation Laboratory
System:
The UNT Digital Library