Resource Type
Serial/Series Title
Atomic Energy Commission Reports
243
NACA Research Memorandums
189
AEC research and development report
79
Hanford Works Reports
65
North American Aviation Reports
56
HW (Series)
52
NACA Technical Reports
41
General Electric Company Atomic Power Reports
38
BNL (Series)
35
Brookhaven National Laboratory Reports
35
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720 Matching Results
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The Determination of Rare Earths in Thorium
Abstract: "A quantitative method for the determination of individual rare earths in thorium down to a level of 0.05 ppm, is described. The procedure consists of a chromatographic cellulose-columns separation followed by a solution-type spectrographic determination. Values are given for the recovery of a number of rare earths using this combined procedure."
Date:
May 15, 1952
Creator:
Center, E. J.; Henry, W. M. & Householder, R. D.
Object Type:
Report
System:
The UNT Digital Library
The Ammonium Carbonate Pressure Leaching of Uranium Ores Proposed as Feed to the Pilot Plant at Grand Junction, Colorado : Progress Report
From introduction: This is Progress report BMI-282, the first of a series covering the operation of the pressure-leaching towers for the extraction of uranium by an ammonium carbonate leach...This report discusses the data obtained from tests run to show the effects of such variables as the amount of air and carbon dioxide passed through the pulp, temperature, pressure, and concentration of ammonium carbonate and ammonium bicarbonate in the leach solution on the extraction of uranium.
Date:
June 15, 1955
Creator:
Wheeler, C. M.; Langston, B. G. & Stephens, F. M., Jr.
Object Type:
Report
System:
The UNT Digital Library
Zirconium Research and Development : Progress Report
From introduction: "This is the ninth monthly report, BMI-514, under Contract No. AT(30-1)-771 on "Zirconium Research and Development". The report covers the work period from September 15, 1950, to October 15, 1950. Work is continuing on the preparation of large-diameter zirconium crystal bars in the 16-inch-diameter de Boer unit. Crystal bars up to 1-5/16 inches in diameter and 8 feet long have been prepared in this unit."
Date:
October 15, 1950
Creator:
Bulkowski, H. H.; Sebenick, J. J.; Campbell, Ivor E. & Gonser, B. W.
Object Type:
Report
System:
The UNT Digital Library
Tungsten-Arc Welding of Ames Thorium and Thorium Alloys
This report follows an investigation made on the welding of Ames thorium by the inert-gas-shielded tungsten-arc process as the first part of a program on the joining of thorium. This program is part of a broader research program to develop the technology of thorium.
Date:
January 15, 1952
Creator:
Monroe, Robert E.; Martin, D. C. & Voldrich, C. B.
Object Type:
Report
System:
The UNT Digital Library
An Application of the Concepts of Particle Packing to the Consolication of Silicon Carbide Powders
From introduction: Silicon carbide is being considered as a basis material for nonmetallic fuel elements because of its high thermal conductivity, low nuclear cross section, high resistance to thermal rupture, and high degree of stability at high temperature in air. A requirement of the fuel elements is that they be thin and have as low porosity as possible. One shape of element under consideration is 0.050 to 0.070 inch thick by a few inches in width and breadth.
Date:
August 15, 1952
Creator:
Harman, Cameron G.; Shinn, J., Jr. & Wagner, H. E.
Object Type:
Report
System:
The UNT Digital Library
Identification of Reaction Products Formed During Magnesium Reduction of Uranium Tetrafluoride: Report
Abstract: "This report describes the results of X-ray diffraction examination of reaction products from a series of experiments performed by Mallinckrodt Chemical Works as an acid in understanding the process of bomb reduction of UF4. UF4 is initially reduced to UF3 by magnesium at 560 C., and subsequently to metal at 600 C. MgF2 from the initial reaction forms a coating on the magnesium which retards the final spontaneous reaction."
Date:
May 15, 1953
Creator:
Schwartz, C. M. & Vaughan, D. A.
Object Type:
Report
System:
The UNT Digital Library
Corrosion-Resistant Materials for Hydrofluoric Acid : Progress Report
Introduction: Among the many corrosion problems encountered in the production of uranium tetrafluoride and uranium metal from ores and concentrates, some of the most serious occur where hydrofluoric acid must be handled.
Date:
June 15, 1953
Creator:
Pray, H. A.; Fink, F. W.; Friedl, B. E. & Braun, W. J.
Object Type:
Report
System:
The UNT Digital Library
Progress Report on Nonaqueous Extractive Methods for Western Uranium Ores
This report describes progress in testing non-aqueous extraction methods for leaching Western ores of uranium and vanadium.
Date:
April 15, 1953
Creator:
Ewing, R. A.; Pobereskin, M.; Kimball, R. B. & Bearse, A. E.
Object Type:
Report
System:
The UNT Digital Library
Progress Report on Nonaqueous Extractive Methods for Western Uranium Ores
The following progress report is part of a series of reports on the study of nonaqueous extractive methods for western uranium ores. This report continues studies on HCl-methanol leaching of Western ores, primarily on Temple Mountain ores.
Date:
July 15, 1953
Creator:
Ewing, R. A.; Pobereskin, M.; Kiehl, S. J.; Foley, D. D.; Filbert, Robert B.; Kimball, R. B. et al.
Object Type:
Report
System:
The UNT Digital Library
Preliminary Report on Thermal and Electrical Conductivities of Some Plutonium-Aluminum Alloys
Abstract: "The thermal and electrical conductivities of a series of Pu-Al alloys have been determined in the range 0.12 atomic percent Pu. The conductivities are approximately proportional to the volume of free aluminum."
Date:
March 15, 1950
Creator:
Gibney, Robert B. & Sandenaw, Thomas A.
Object Type:
Report
System:
The UNT Digital Library
Niobium Phase Diagrams
The following report is the final technical report on a series of reports under contract AT(11-1)-515, titled "Niobium Phase Diagrams", covering the period from April 15, 1957 to April 16, 1960.
Date:
May 15, 1960
Creator:
Elliott, Rodney P. & Komjathy, Steven
Object Type:
Report
System:
The UNT Digital Library
Feasibility Study of a New Mass Flow System : Covering the Period from January 1 to January 31, 1961
This document reports progress during the month of February, 1961, recording investigations and studies of a flow rate using a curved pipe or S-tube and documenting measurements of mass flow, tube design and construction.
Date:
February 15, 1961
Creator:
Burgwald, G. M.; Stone, C. A. & Genthe, William K.
Object Type:
Report
System:
The UNT Digital Library
An Experimental Survey of the Heat-Treatment Response of some Zirconium-Uranium Alloys
Abstract: "The heat-treatment behavior of zirconium alloys containing 7 to 70 w/o uranium is described. The effect of oxygen contamination on the structure and hardness of these alloys is outlined. It is shown that in the initial stages pf transformation of beta zirconium-uranium solid solution into the low-temperature phases a potent hardening reaction occurs in alloys containing 20 to 70 w/o uranium. In this reaction the hardness may rise from 200 DPH characteristic of retained beta to values in excess of 400 DPH. Practical heat treatments have been developed which produce relatively soft alloys. The microstructures and hardnesses produces by these treatments are shown."
Date:
June 15, 1956
Creator:
Saller, Henry A.; Rough, Frank A. & Chubb, Walston
Object Type:
Report
System:
The UNT Digital Library
Investigation of the Behavior of NaOH-UO₃ Slurries in Small Flow Loops
From introduction: "This report presents the results of an experimental program to evaluate engineering problems which might be encountered when circulating NaOH-UO3 slurry through a thermal cycle."
Date:
September 15, 1953
Creator:
Stang, J. H.; Lagedrost, J. F.; Simons, E. M. & Dayton, R. W.
Object Type:
Report
System:
The UNT Digital Library
Magnetic Recorder for Nuclear Pulse Application : Covering the Period from August 6, 1959 to October 5, 1959
The following report discusses direct recording of nuclear pulse height data on magnetic tape that represents an inexpensive method of data storage where some degradation of the original energy resolution can be tolerated.
Date:
October 15, 1959
Creator:
Burgwald, G. M.
Object Type:
Report
System:
The UNT Digital Library
Magnetic Recorder for Nuclear Pulse Application : Covering the Period from February 6, 1960 to April 5, 1960
Abstract: "The accuracies which can be achieved in analog recording systems are for the most part tape limited. While reasonable variations in tape speed do not directly affect the accuracy, such variations result in improper tape tensioning, which in turn results in poor head-to-tape contact. The quality of the tape transport mechanism should be such that the error introduced by improper head- to tape contact is less than tape errors. Some additional equipment is necessary in setting up a tape recorder for a given experiment. The amplitude of the input pulse spectura to the recorder should be adjusted for optimum value and, if possible, the counting rate should be adjusted to obtain good tape utilization. An oscilloscope is probably adequate to satisfy both conditions."
Date:
April 15, 1960
Creator:
Burgwald, G. M.
Object Type:
Report
System:
The UNT Digital Library
Corrosion of Stellite in Redox Streams
The following report provides results from laboratory tests on the corrosion resistance of various types of stellite facings on astenitic stainless steel T-347 to Redox streams.
Date:
May 15, 1950
Creator:
Koenig, W. W.
Object Type:
Report
System:
The UNT Digital Library
Evaluation and Consolidation of Electrolytic Thorium
Abstract: "Sound, fabricable ingots of thorium were produced by triple are melting of electrolytic thorium. Consumable electrodes were fabricated by tack welding of cold-pressed and vacuum-sintered bars of the granular thorium electrodeposited from a molten-salt bath. The hydrogen content of the electrodeposited material was reduced from 80 to 4 ppm by vacuum sintering at 1250 C at pressures below 1 x 10-(-3) mm of mercury. Both sodium and chlorine content were reduced during melting; sodium from 250 to 25 ppm and chlorine from 1000 to 30 ppm. Oxygen and HCl acid-insoluble contents increased during sintering and melting. Oxygen content increased from 0.35 to 0.50 w/o and HCl acid-insoluble content from 0.8 to 4.0 w/o. A starlike includion revealed by metallographic examination of the as-cast thorium was identified as ThO2."
Date:
June 15, 1955
Creator:
Saller, Henry A.; Dickerson, Ronald F. & Foster, Ellis L.
Object Type:
Report
System:
The UNT Digital Library
The Kinetics of the Zirconium-Uranium Dioxide Reaction
This report discusses three experimental methods used to study the kinetics of the reaction between zirconium and UO2.
Date:
August 15, 1955
Creator:
Mallett, Manley William, 1909-; Gerds, Arnold F.; Lemmon, Alexis W. & Chase, Dan L.
Object Type:
Report
System:
The UNT Digital Library
Experimental Investigation of Diffuser Pressure Ratio Control With Shock Positioning Limit on 28 Inch Ram-Jet Engine
Report presenting an investigation of the performance of a diffuser static-pressure-ratio control with a normal shock-positioning limit on a ramjet engine installed in an altitude free-jet facility. Testing occurred at Mach numbers of 2.35 and 2.50, altitudes of 50,000, 60,000 and 65,000 feet, and angles of attack of 0 and 7 degrees. Results regarding the effects of control constants, effects of disturbance size and operating point, effects of flight conditions, and control limitations and possible improvements are provided.
Date:
January 15, 1957
Creator:
Dunbar, William R.; Wentworth, Carl B. & Crowl, Robert J.
Object Type:
Report
System:
The UNT Digital Library
The X-Ray Spectra of Polonium Atomic Number 84
From abstract: "Two samples, each containing an estimated 10 curies (2 mg) of polonium-210, were purified by vacuum distillation and evaporated onto oblique sections of X-ray targets made of copper. Four lines of the K series and ten lines of the L series of the X-ray spectrum of polonium were recorded with a one-meter transmission crystal spectrograph and a 25-centimeter Bragg spectrograph, respectively. Measured wavelengths agree approximately with values predicted by extrapolation of Moseley's law and with those claimed by Hulubei. Decay of polonium-210 (half life = 138 days) and growth of lead-206 (stable) were observed over a period of 180 days."
Date:
April 15, 1952
Creator:
Peed, W. F.; Burkhart, L. E.; Staniforth, R. A. & Fauble, L. G.
Object Type:
Report
System:
The UNT Digital Library
An Experimental and Theoretical Study of the Subcritical BNL Reactor
Technical report outlining the theoretical study of the sub-critical BNL (Brookhaven National Laboratory) reactor, and a comparison of reactor performance with the purpose of presenting the experimental results of the experimental methods. Presents experimental results and and a detailed discussion of the experimental methods along with theoretical analysis and evaluation of the results.
Date:
June 15, 1950
Creator:
Cwernick, J.; Kaplan, I.; Kunstadter, J.; Sailor, V. & Williams, C.
Object Type:
Report
System:
The UNT Digital Library
Liquid Reactor Fuels: Bismuth-Uranium System
Technical report about the liquidus curve for the nuclear reactors bismuth-uranium system and the need for a suitable container for this fuel.
Date:
September 15, 1950
Creator:
Bareis, D. W.
Object Type:
Report
System:
The UNT Digital Library
Unit for Continuous Separation of U233 From Thorium Fluoride
Technical report outlining a preliminary design for carrying out the process of producing U233 from Th232.
Date:
September 15, 1950
Creator:
Dwyer, O. E.
Object Type:
Report
System:
The UNT Digital Library