UNT Libraries Government Documents Department - 774 Matching Results
Search Results
- The Motion of Massive Particles Through Solid Matter
- Report concerning the behavior of atoms dislodged from their positions in solid constituents by neutrons during the transition from high energy to thermal energy.
- An Improved 8 and 32 Inch Diffusion Pump Combination
- Report describing the design and performance of an 8 inch and 32 inch diffusion pump and measurements of their capacity.
- Nuclear Reactor Project Progress Report, January 1948
- This report is a progress report detailing operations and ongoing projects at the Brookhaven National Laboratory. The report describes new developments with buildings and progress regarding ongoing experiments. The report includes photographs showing progress in the construction of the reactor and other images and figures that accompany the descriptions of projects.
- The Radioactivity of Potassium 40: A Survey of Investigations
- From note: "Report discussing the history of the research of potassium 40 and its radioactivity, as well as the author's own investigations into the isotope."
- Carbon 14 from Lead Nitrate
- Report describing the production of carbon 14 from Pb(NO3)2 in the Oak Ridge Nuclear Reactor via the reaction N14 (n.p.) C14.
- Development of Continuous Jet Impaction Method for Determining Air-Borne Contaminants
- Report discussing a method of continuous air sampling that can be varied for use in different types of collections.
- The Enhancing Effect of the Inhalation of Hydrogen Fluoride Vapor on Beryllium Sulfate Poisoning in Animals
- Report investigating the possible relationship between fluoride and beryllium toxicity by exposing rats to either beryllium sulfate mist and/or hydrogen fluoride vapor. Materials, experimental methods, and results are described. Bibliography begins on page 23.
- The Inhibition of Malic Acid Oxidation in Rat Liver Homogenates by Octin-5-OIC Acid
- Report of an experiment demonstrating that Octing-50oic acid inhibits the endogenous respiration of rat-liver homogenates. This report includes descriptions of the experiment, materials, and results.
- The Relationship of the Cell Surface to Metabolism, [Part] 4: The Role of Cell Surface Phosphatases of Yeast
- Report describing the role of phosphates in the overall economy of the yeast cell. This report includes research methods, results, and a discussion of these results.
- Determination of the Number of Double Bonds in Less-Than-Milligram Amounts of Unsaturated Fatty Acids by Catalytic Hydrogenation in the Warburg Apparatus
- Report discussing the determination of the number of olefinic double bonds in less-than-milligram amounts of unsaturated fatty acid derivatives using Barcroft-Warburg tissue respirometer as a manometric microhydrogenation apparatus.
- The Beta-Gamma Surface Dosage Rate from Natural Uranium
- From summary: "Report discussing the beta-gamma dosage rate at the surface of a natural uranium disc. Measurements were taken using a Ryerson electrometer and an extrapolation ionization chamber."
- Materials Testing Reactor Project Handbook
- The following handbook was made for the purpose of: (1) to give a semidetailed description of the testing reactor, and (2) to explain, in so far as possible, the reasons for the design.
- FMPC Solvent Treatment Area - Process Design
- This memorandum presents the process design for the solvent reast area of the Feed Materials Production Center. The purpose ofthe transmittal is to provide the basis for the detailed mechanical design and layout of this section of the refinery. Drawings, flowsheets, and specifications are included.
- Chemistry Division Quarterly Progress Report: Period Ending September 30, 1951
- This quarterly progress report discusses topics of research and experimentation at the Oak Ridge National Laboratory, including inorganic chemistry, nuclear chemistry, radio-organic chemistry, chemistry of separations processes, chemical physics, radiation chemistry, chemistry of the solid state, instrumentation, reactor chemistry.
- Report on Production of Hafnium-Free Zirconium to Climax Molybdenum Company
- Summary: A study has been made of possible processes for the production of hafnium-free zirconium of a grade suitable to meet AEC specifications.
- Preliminary report on diamond-drill exploration on Outlaw Mesa, Mesa County, Colorado
- Preliminary report regarding diamond-drill exploration on Outlaw Mesa, Mesa County, Colorado. Done on behalf of the Division of Raw Materials of the U.S. Atomic Energy Commission
- A Property of Randomness of an Arithmetical Functions
- Report describing a property of randomness of an arithmetical function.
- Sigma Plug Welding of Spun-Over Fuel Cans
- Summary: Purpose of the investigation is to improve the peripheral welding of the brazed joint at the top of aluminum-sheathed fuel slugs by forming the can over the top of the cap and welding the resulting center opening. This investigation looked at the applicability of the inert-gas-shielded, consumable electrode process, using commercially available equipment, for producing a weld closure in spun-over fuel cans. Using commercially available sigma welding equipment, no practical combination of welding conditions was found which resulted in satisfactory leak-tight closures in spun-over canned fuel slugs. It is recommended that plug welding of spun-over closures by the sigma welding process be dismissed from consideration for start-up at the Savannah River Plant.
- Aircraft Nuclear Propulsion Project Quarterly Progress Report: Period Ending September 10, 1951
- The first part of this quarterly progress report details reactor theory and design, discussing the aircraft reactor experiment, experimental reactor engineering, reactor physics, and critical experiments. The second part of this report is not included. The third part of this quarterly progress report details materials research, discussing corrosion research, physical properties and heat-transfer research, metallurgy and ceramics, chemistry of high-temperature liquids, and radiation damage. The fourth part of this quarterly progress report details alternate systems, discussing a supercritical water reactor, circulating-moderator-coolant reactors. The fifth part of this quarterly progress report includes appendixes.
- Process Engineering Report on Production of Thorium at Iowa State College
- Technical report presenting the results of a study of the AEC thorium production facilities at Iowa State College, Ames, Iowa. Operating procedures, descriptions of equipment and a production cost analysis have been included in this study.
- Aircraft Nuclear Propulsion Project Quarterly Progress Report: Period Ending December 10, 1951
- This quarterly progress report details the ongoing research and experiments at the Oak Ridge National Laboratory as part of the Aircraft Nuclear Propulsion Project. The first part of this report discusses reactor theory and design. The second part of this report is not included. The third part of this report discusses materials research. The fourth part of this report includes appendixes
- Metallurgy Division Quarterly Progress Report: Period Ending October 31, 1951
- This quarterly progress report discusses ongoing research and experiments at Oak Ridge National Laboratory in the Metallurgy Division. This report discusses thorium research, the mechanical properties of metals including thorium, uranium, inconel, and z-nickel, the ANP program (including the following topics: the physical chemistry of liquid metals, and welding research), and the materials testing reactor program.
- Preliminary Appraisal of the Carnotite Resources of the Carrizo Mountains Area, San Juan County, New Mexico, and Apache County, Arizona
- From introduction: A rapid appraisal of the carnotite resources of the Salt Wash sandstone member of the Morrison formation in the Carrizo Mountains area was undertaken by the U. S. Geological Survey late in 1951 in connection with its current project of geologic mapping of the area. Though brief and preliminary, this report provides a summary of production trends and estimated reserves in the area and indicates as far as possible the total potential of the area as a source of uranium. This information may be helpful in planning new milling facilities or other measures to encourage a higher rate of production.
- Location of Orbital Axis in Table-Top Stellarator
- This report discusses what effects the shift of an orbital axis relative to the center of the table-top stellarator tube as well as the magnitude of these effects.
- The Shielding of Mobile Reactors - [Part] 2
- From abstract: "The methods of applying results of bulk-shielding measurements to the design of reactor shields is outlined. Geometrical transformations for the more common shapes are derived, as are approximate means of calculating leakage of radiation. As an illustration of the methods, the ORNL Lid Tanks and Bulk Shielding Facility data are transformed to a standard geometry and compared. Two direct calculations of water attenuation, using cross sections described in the previous article, are finally compared with the experimental data."
- Results of exploration at Lost Creek schroeckingerite deposit, Sweetwater County, Wyoming, July 1951-February 1952: an interim report
- "his interim report presents the grade and tonnage data collected during exploration at the Lost Creek schroeckingerite deposit, Sweetwater County, Wyoming, Between July 1951 and February 1952. Discussions of he geologic results of exploration (lithology, mineralogy, structure, origin, etc.) are not included in this report and consequently the detailed lithology and structure have been omitted from the illustrations (figs. 1-7)"
- Effect of Plasma Oscillations on the Table-Top Model
- The following report describe the effect of plasma oscillations using a table-top model and the probable magnitude of the quantities needed to reach complete ionization.
- Mechanical Properties of Zirconium and Zirconium-Uranium Alloys Containing Tin
- Abstract: "The mechanical properties of a large number of zirconium alloys have been investigated. These alloys include zirconium-tin and zirconium-tin-uranium. Tensile tests have been run on these alloys at room temperature, 500 F, and 600 F. Hot-hardness data have been obtained from room temperature to 1600 F, with particular emphasis on the hot-rolling range. Creep tests and fatigue tests have been run on a number of zirconium-tin alloys at 500 F."
- Mechanical Properties of Zirconium and Zirconium-Uranium Alloys Containing Tin
- Abstract: "The mechanical properties of a large number of zirconium alloys have been investigated. These alloys include zirconium-tin and zirconium-tin-uranium. Tensile tests have been run on these alloys at room temperature, 500 F, and 600 F. Hot-hardness data have been obtained from room temperature to 1600 F, with particular emphasis on the hot-rolling range. Creep tests and fatigue tests have been run on a number of zirconium-tin alloys at 500 F."
- Carnotite resources of Outlaw Mesa, Mesa County, Colorado
- A report regarding carnotite resources of Outlaw Mesa, Mesa County, Colorado.
- Note of the Function of the Aquadag in the Stellarator
- The following report introduces the aquadag, a part of the stellarator with the purposes to prevent the non-uniform accumulation of electrostatic charges on the walls of the stellerator and to free the electrons of the stellerator and provide accelerations, achieving a uniform field distribution.
- Interim report on exploration of the Jo Dandy area, Montrose County, Colorado
- Interim report regarding an exploration of the Jo Dandy area, Montrose County, Colorado. Concerns work done on the behalf of the Division of Raw Materials of the U.S. Atomic Energy Commission.
- Preliminary report on exploration in the Atkinson Mesa area, Montrose County, Colorado
- A preliminary report regarding exploration in the Atkinson Mesa Area, Montrose County, Colorado
- The Spectrophotometric Determination of Boron in Plutonium Using an Oxalate Separation
- An improved method for the determination of boron in plutonium is reported. Precipitation of plutonium (III) acid oxalate prior to color development with curcumin results in increased precision, greater speed, and lower costs. Results are presented of a statistical study involving all variables.
- The Ductility of Brazed Stainless Steel Joints
- Abstract: "The ductility of Type 310 stainless steel T-joints brazed with GE-62 brazing alloy was measured at room temperatures 1200, 1650, and 1800 F. The measure of ductility was taken as the plastic axial strain required to crack braze fillets in T-section tensile specimens. At elevated temperatures, the ductility of as-brazed joints approximated that of the stainless steel, but at room temperature the brazed joints had only one-tenth the ductility of the base metal. Annealing for 16 hr at 1800 F in air was found to triple the room-temperature ductility of the brazed joint."
- Radiation Damage in Boron Carbide
- From introduction: "Report describing the study of radiation damage in boron carbide with an integrated thermal neutron flux of 3x10^20 neutrons/cm² in the Materials Testing Reactor (MTR)."
- Uranium Migration in UOâ‚‚-Bearing Ceramics
- This report follows a preliminary study on uranium migration in pressed and sintered UO2-bearing bodies based on MoSi2 or Al2O3.
- The Anodizing of Zirconium
- Five continuous coatings were produced on zirconium coupons using an anodizing technique. These layers appear to be quite adherent and not subject to visible or audible failure caused by flaxion of the basis metal, Their abrasion resistance, though not investigated thoroughly, appears to be moderately good.
- Observation of Taylor Instability in Gases
- Report discussing experiments related to Taylor instability in an all gaseous system. Experimental methods, apparatuses, and conclusions are described.
- The tensile strength of solid-state bonded aluminum and nickel-plated uranium
- A report intended to aid in the evaluation of solid-state bonding techniques for cladding natural-uranium fuel-element cores with aluminum, tensile specimens which are 1/4 in. in diameter and 3 in. long.
- A 37,500 KW Power Reactor with Competitive Possibilities
- The following report follows the study on economics of nuclear power generation using a light water reactor.
- Distribution of Thermal Neutrons from Fast Sources in Exponential Piles
- Report regarding the mathematical analysis of the exponential pile experiment using highly absorbent slugs and assuming the emitting of fast neutrons. Related theory and equations are discussed.
- Quarterly Progress Report on Reactor Development: 4000 program
- Report issued by the Argonne National Laboratory discussing progress made on reactor development. Progress made on the core, pressure vessel and shield, and the power plant are presented. This report includes tables, and illustrations.
- The Fabrication of Subassemblies for the Supercritical-Water Reactor
- In studies of the fabrication of fuel subassemblies for the supercritical-water reactor, the limited ductility of stainless steel-UOâ‚‚ fuel sheet made the fabrication of corrugated-flat-plate-type subassemblies impractical. A fabricable MTR-type assembly, 5/8 in. square and 30 in. long, was developed. Methods for edge cladding fuel sheet were developed and a brazing alloy, GE-75, was found to be corrosion resistant in supercritical water.
- The Effects of Chemical Impurities on the Quality of Rolled Uranium Rod
- Abstract: "Thirty-four uranium ingots containing controlled amounts of carbon, nitrogen, and Mgl2 slag were cast, rolled, and examined to investigate the relation between these impurities and the quality of the rolled rod. Carbon in concentrations up to 1400 ppm and nitrogen up to 170 ppm, either singly or in combination, had no significant effect on the number of defects observed in the rolled rod. The quality of the rods, however decreased with increasing amount of slag necessary to cause observable differences in the rod could not be detected on analysis, but was visible in the microstructure."
- Measurement of the Behavior of a Plasma in a Magnetic Field by Means of Probes
- Abstract: "Probes were used to measure certain properties of the cloud of positive ions and electrons ejected from a pulsed ion source having two hydrogen-loaded electrodes. Time-of-flight measurements show: the presence of H+ ions with 50 ev directed energy; an increase of this energy with increasing pulse current in the source; a higher peak yield of ions with higher peak currents in the source; and higher yields and higher ion energies up to 110 ev have been recorded with the use of a pulsed magnetic field impressed upon the source. The neutral positive ion-electron beam from the source has been projected against an increasing magnetic field and the reflected and transmitted signals have been recorded and compared as a function of the magnetic field. Probe signals from the plasma as it encounters the magnetic field are oscillatory, suggesting that magnetohydrodynamic phenomena are presented."
- An Exact Analysis of Limited Plane Plasma in a Magnetic Field
- Introduction: "Prior analyses of a plasma in a magnetic field have been limited, as far as the writer is aware, to cases in which the relative change in field over the orbital distance and the relative change in ion concentration are both small, or in which the relations have been viewed in a purely hydrodynamical way. The first approach excludes cases which can be of considerable interests, for it fails near a plasma edge. The second loses all sight of the structure imposed by the orbital motions."
- Use of Thermal Electromotive Forces to Product Magnetic Field in a Controlled Thermonuclear Reactor
- The following report investigates the possible use of thermal emf's to produce the plasma-containing magnetic field in a thermonuclear reactor.
- Bonding of uranium to uranium
- From abstract: "Some mechanical properties of uranium joined to uranium by means of sinter welding described. The types of uranium investigated were powdered and cast material. Comparison of results obtained by the testing of the whole and joined material are presented. Although the joined material to date does not possess strength of the whole material, the results are promising. Work is continuing."
- Electronic Devices for Nuclear Physics Quarterly Report: Number 19, February 1, 1955 - April 30, 1955
- Report regarding the ongoing development of both multi-alkali photocathodes and improved photomultipliers.