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UNT Theses and Dissertations
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1,222 Matching Results
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Use of Analog Computers for Simulating the Movement of Isotopes in Ecological Systems
None
Date:
January 24, 1962
Creator:
Neel, R. B. & Olson, J. S.
System:
The UNT Digital Library
A Study of the Kinetic and Mechanical Properties of a Stabilized Beta Phase Plutonium Alloy
The elements Sn, Mg, Ti, Zr, Hf, Si, Cd, and U were alloyed with plutonium to determine their effect on stabilization of the beta phase. Zirconium was found to be the ' most effective. Kinetic studies were conducted on Pu-Zr alloys having 0.24, 0.65, and 1.7 at.% Zr contents. The beta to alpha transformation in the Pu-Zr alloys was somewhat similar to that in unalloyed plutonium. The main difference being that time, temperature, transformation curves of the alloys were shifted to the right as the zirconium concentration increased. It was determined that the amount of beta phase retained at room temperature increased as the zirconium concentration increased. The minimum amount of Zr needed to stabilize the beta phase of plutonium at room temperature was determined to be 2.0 at.%. A 2.4 at.% Zr addition stabilized the beta phase of plutonium at atmospheric pressure from room temperature to 265 deg C. During mechanical property testing it was determined that the stabilized beta Pu-2.4 at.% Zr alloy was brittle from room temperature to 230 deg C. Both tensile and compression strengths of the beta stabilized alloy were greater than the unalloyed beta phase of plutonium. A brittle-ductile transition was noted between 130 …
Date:
January 1, 1962
Creator:
Taylor, J. M.
System:
The UNT Digital Library
RECOMBINATION STATISTICS FOR THE NEUTRON-INDUCED BASE CURRENT COMPONENT.
None
Date:
January 1, 1968
Creator:
Chow, M.
System:
The UNT Digital Library
INTERACTION OF TWO-DIMENSIONAL, STRATIFIED, TURBULENT AIR--WATER AND STEAM-- WATER FLOWS.
None
Date:
January 1, 1968
Creator:
Linehan, J.H.
System:
The UNT Digital Library
LOW TEMPERATURE COOPERATIVE BEHAVIOR OF THE RARE EARTH SALTS GdCl$sub 3$ AND PrCl .
None
Date:
January 1, 1971
Creator:
Hessler, J.P.
System:
The UNT Digital Library
A. The Preparation of Dilute, Dry, Nonaqueous Solutions of Molecular Iodine Inoculated With Iodine-131. B. The Distribution of Molecular Iodine Between Cyclohexane and Aqueous Solutions.
None
Date:
January 1, 1968
Creator:
Van de Steeg, G. E.
System:
The UNT Digital Library
THICKNESS CORRECTIONS FOR NEUTRON-ACTIVATED GOLD FOILS.
None
Date:
January 1, 1969
Creator:
Stanford, G.S. & Seckinger, J.H.
System:
The UNT Digital Library
THE EFFECTIVE ALPHA ACTIVITY OF $sup 238$Pu DIOXIDE MICROSPHERES.
None
Date:
January 1, 1969
Creator:
Huffman, G.N.
System:
The UNT Digital Library
X-Ray Mass Absorption Coefficients and Quantitative Microanalysis of Metallurgical Systems, Including Refractory Metal-Interstitial Compounds.
None
Date:
January 1, 1969
Creator:
Gray, L. J.
System:
The UNT Digital Library
REACTIONS OF IODINE ACTIVATED BY RADIATIVE NEUTRON CAPTURE AND ISOMERIC TRANSITION WITH GASEOUS AND CONDENSED STATE POLYHALOMETHANES.
None
Date:
January 1, 1969
Creator:
Parks, N.J.
System:
The UNT Digital Library
ANALYTICAL AND EXPERIMENTAL STUDIES OF DOUBLE-PIPE COUNTER-FLOW LIQUID METAL HEAT EXCHANGERS.
None
Date:
January 1, 1968
Creator:
Brown, R.W. Jr.
System:
The UNT Digital Library
Effect of Alloying Additions on Corrosion Behavior of Nickel--Molybdenum Alloys in Fused Fluoride Mixtures.
None
Date:
January 1, 1969
Creator:
DeVan, J. H.
System:
The UNT Digital Library
Thermal Conductivity and Lorenz Function of Gadolinium, Terbium, and Holmium Single Crystals.
None
Date:
January 1, 1968
Creator:
Nellis, William Joel
System:
The UNT Digital Library
TRANSPORT REACTIONS OF THORIUM OXYDIIODIDE.
None
Date:
January 1, 1969
Creator:
Adolphson, D.G.
System:
The UNT Digital Library
Low-Energy, High-Resolution, Variable Angle Electron Impact Spectroscopy.
None
Date:
January 1, 1969
Creator:
Rice, J. K.
System:
The UNT Digital Library
DEFORMED POTENTIAL MANY-PARTICLE THEORY.
None
Date:
January 1, 1968
Creator:
Draayer, J.P.
System:
The UNT Digital Library
ELECTRON TRANSFER REACTIONS OF FERROCENE.
None
Date:
January 1, 1971
Creator:
Pladziewicz, J R
System:
The UNT Digital Library
FALLOUT CESIUM-137 ACCUMULATION IN TWO SUBPOPULATIONS OF BLACK-TAILED DEER (ODOCOILEUS HEMIONUS COLUMBIANUS).
None
Date:
January 1, 1969
Creator:
Book, S. A.
System:
The UNT Digital Library
Low-Energy, High-Resolution, Variable Angle Electron Impact Spectroscopy.
None
Date:
January 1, 1969
Creator:
Rice, J. K.
System:
The UNT Digital Library
ANISOTROPIC ELASTIC--PLASTIC STRESS ANALYSIS OF A THICK-WALLED GRAPHITE CYLINDER.
None
Date:
January 1, 1969
Creator:
Moore, S. E.
System:
The UNT Digital Library
OPTIMAL DIGITAL COMPUTER CONTROL OF NUCLEAR REACTORS.
None
Date:
January 1, 1969
Creator:
Lipinski, W C
System:
The UNT Digital Library
The Moderation of Neutrons in Non-Multiplying Infinite Homogeneous Media.
Submitted to Univ. of Minnesota, Minneapolis. The gas model of neutron thermalization for a general moderator mass was studied by formulating the thermalization process as an integral equation. The relation of the model to the slowing-down theory was investigated. A discussion of the theory of scattering cross sections for neutrons is presented. The Wigner-Wilkins model was considered for moderator atoms of the same mass as the neutron. The analysis was extended to the case of a gaseous moderator with atoms of general mass. (M.C.G.)
Date:
January 1, 1962
Creator:
Min, K.
System:
The UNT Digital Library
Study of Precipitation in Niobium--Nitrogen Alloys.
None
Date:
January 1, 1969
Creator:
Hennessy, D. R.
System:
The UNT Digital Library
An Instrument to Determine whether Certain Fundamental Philosophical and Educational Beliefs Are Held by Selected Public School Teachers in the Areas of Elementary Education, Secondary Education, and Guidance
The problem of this study was to develop an instrument which would reveal whether certain fundamental philosophical and educational beliefs are held by public school teachers in the areas of elementary education, secondary education, and guidance.
Date:
January 1968
Creator:
Thomas, Neil Eugene
System:
The UNT Digital Library