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Design and Feasibility Study of a Pebble Bed Reactor-Steam Power Plant
The status of development studies being conducted on a pebble bed power reactor is outlined. The items discussed are fuel element manufacture, stability, and reprocessing, and component development. (D.L.C.)
Date:
May 1, 1958
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Survey of Nonmetallic Liquid Coolants for Nuclear-Power Piles
A comprehensive survey of the literature was made in an effort to identify nonmetallic materials of possible usefulness as liquid coolants. Materials having maximum melting points of 1000 deg F and boiling points of l200 deg F were considered, but boiling points above 2200 deg F were preferred. Melting points, boiling points, densities, heat capacities, and thermal conductivities were tabulated. Approximately 190 materials appeared to have melting and boiling temperatures in a suitable range. A paucity of thermal- conductivty and heat-capacity data prevented further estimates of suitability of all but nine of these materials. Of these nine nonmetallics, only sodium hydroxide appeared to offer possibilities when considered according to the NEPA formula. (M.C.G.)
Date:
May 26, 1950
Creator:
Shaw, H.L. & Boulger, F.W.
Object Type:
Report
System:
The UNT Digital Library
Positional Tolerancing at Sandia Corporation
The positional tolerance method of dimensioning is described. The emphasis is placed on the elimination of ambiguities and increase in tolerances provided by this method as compared to the older, bilateral method. (auth)
Date:
May 1, 1959
Creator:
Eichert, F. F. & Nicovich, P. A.
Object Type:
Report
System:
The UNT Digital Library
Reciprocity relations in aerodynamics
From Introduction: "The purpose of the present paper is twofold. First, a close connection will be established between reverse-flow theorems in subsonic and supersonic, steady-state wing theory and known reciprocity relations between two solutions of the equation the flow field."
Date:
May 1952
Creator:
Heaslet, Max A. & Spreiter, John R.
Object Type:
Report
System:
The UNT Digital Library
Recovery of Oil in California by Secondary Methods: In Two Parts - Part 2. Los Angeles Basin and Coastal Oil Fields
Report issued by the U.S. Bureau of Mines on secondary methods of oil-recovery in California oil fields. The main recovery method studied are of the pressure-maintenance type, such as air-injection. The report is divided into two parts, and includes maps and tables.
Date:
May 1952
Creator:
Loomis, A. G.; Fried, A. N. & Crowell, D. C.
Object Type:
Report
System:
The UNT Digital Library
National Annual Survey of Aviation Gasoline and Aviation Jet Fuel, October 1951 Production
Report issued by the U.S. Bureau of Mines on the properties of aviation gasoline and fuel produced during October 1951. Analysis of the gasoline and fuels sampled are presented. The report includes tables and graphs.
Date:
May 1952
Creator:
Blade, O. C.
Object Type:
Report
System:
The UNT Digital Library
Breeds of chickens for meat and egg production.
Describes the characteristics of the different breeds of chicken that are used for the production of meat and eggs.
Date:
May 1954
Creator:
United States. Agricultural Research Service. Animal Husbandry Research Division.
Object Type:
Book
System:
The UNT Digital Library
Grasshoppers : a new look at an ancient enemy.
Describes the damage grasshoppers cause to crops, how to identify different species, how they develop, and where and how they live. With this information as a background, the final section describes how to control them.
Date:
May 1957
Creator:
Parker, J. R. (John Robert), 1884-
Object Type:
Book
System:
The UNT Digital Library
Preparing peaches for market.
Describes methods for harvesting, packing, and shipping peaches to be sold at market.
Date:
May 1951
Creator:
Morrison, W. W. (Wendell Wallace), 1897-
Object Type:
Book
System:
The UNT Digital Library
Estimate of Known Recoverable Reserves and the Preparation and Carbonizing Properties of Coking Coal in Overton County, Tennessee
Report issued by the Bureau of Mines over investigations of coking coal reserves of Overton County, Tennessee. Testing to determine suitability for producing metallurgical coke is also presented. Methods used, and measurements of coal reserves are listed. This report includes tables, maps, and illustrations.
Date:
May 1955
Creator:
Williams, Lloyd; Abernethy, R. F.; Gandrud, B. W.; Reynolds, D. A. & Wolfson, D. E.
Object Type:
Report
System:
The UNT Digital Library
Recent Developments in Water Flooding in Nowata County, Oklahoma: Oil Fields, 1954-55
Report issued by the Bureau of Mines over development of systematic flooding in oil field reservoirs. As stated in the introduction, "this report presents a discussion of four full-scale water-flooding projects in the Delaware-Childers field and 1 pilot project in the Curl Creek field" (p. 1). This report includes tables, graphs, maps, and illustrations.
Date:
May 1955
Creator:
Eakin, J. L.
Object Type:
Report
System:
The UNT Digital Library
Laboratory and Full-Scale Sulfur Elimination Tests on Coal from Pratt Bed, Alabama
Report issued by the Bureau of Mines over studies conducted on the Pratt coal bed in Alabama. The report details "washability studies of coal from beds in Alabama and other southern states in which commercially important deposits occur" (p. 1). This report includes tables, graphs, and illustrations.
Date:
May 1958
Creator:
Perry, R. E.; Gandrud, B. W.; Riley, H. L.; Gayle, J. B. & Eddy, W. H.
Object Type:
Report
System:
The UNT Digital Library
Secondary-Recovery Potentialities of the Buckrange Reservoir, Stephens Oilfield, Columbia, Nevada, and Ouachita Counties, Arkansas
Report issued by the Bureau of Mines over petroleum-engineering studies conducted on Stephens Oilfield in Arkansas. The production history, and geology of the oilfield are discussed. This report includes tables, maps, and illustrations.
Date:
May 1956
Creator:
Meadows, Paul & Hawkins, Murphy E.
Object Type:
Report
System:
The UNT Digital Library
Exploration for Lead and Zinc at the Madonna Mine, Monarch Mining District, Chaffee County, Colorado
Report issued by the Bureau of Mines over exploration of the lead and zinc deposits of the Madonna Mine. Descriptions of the deposits are presented. This report includes tables, maps, and illustrations.
Date:
May 1956
Creator:
Hazen, Scott W., Jr.
Object Type:
Report
System:
The UNT Digital Library
Estimate of Known Recoverable Reserves and Preparation and Carbonizing Properties of Coking Coal in Claiborne County, Tennessee
Report issued by the Bureau of Mines over investigations of coking coal reserves of Claiborne County, Tennessee. Testing to determine suitability for producing metallurgical coke is also presented. This report includes tables, maps, and illustrations.
Date:
May 1956
Creator:
Hershey, Robert E.; Williams, Lloyd; Crentz, William L.; Miller, J. W. & Reynolds, D. A.
Object Type:
Report
System:
The UNT Digital Library
Estimate of Known Recoverable Reserves of Coking Coal in Clarion County, Pennsylvania
Report issued by the Bureau of Mines over investigations of coking-coal reserves of Clarion County, Pennsylvania. Methods used, and measurements of coal reserves are listed. This report includes tables, and maps.
Date:
May 1956
Creator:
Blaylock, D. W.; Dowd, James J.; Abernethy, R. F. & Reynolds, D. A.
Object Type:
Report
System:
The UNT Digital Library
Calculations on U235 Fission Product Decay Chains
Report of equations for calculating decay of U235. The introduction states" Calculations have been made on the U235 fission product decay schemes. The results for a typical example, that of a reactor operating at 1000 kilowatts for 180 days, have been tabulated and graphed. General formulae have been used so that the results can be applied for any power level and any time of irradiation" (p. 2).
Date:
May 1952
Creator:
Faller, I. L.; Chapman, T. S. & West, J. M.
Object Type:
Report
System:
The UNT Digital Library
THREE NEW DELAYED ALPHA EMITTERS OF LOW MASS
Two new positron active isotopes, B{sup 8} and Na{sup 20}, have been found to decay to excited states of Be{sup 8} and Ne{sup 20}, which in turn decay 'instantaneously' by alpha emission. Their half-lives are 0.65 {+-} 0.1 sec. and 1/4 sec. respectively. N{sup 12} is also found to have a low energy positron group which leads to an {alpha}-unstable excited state in C{sup 12}. The masses of B{sup 8} and Na{sup 20} are 8.027 and 20.015 respectively. B{sup 8} decays by a 13.7 {+-} 0.3 Mev positron, through the same excited state of Be{sup 8} as does Li{sup 8}. Estimates of the energies of the excited state in C{sup 12} and Ne{sup 20} are made.
Date:
May 31, 1950
Creator:
Alvarez, Luis W.
Object Type:
Report
System:
The UNT Digital Library
A MEASUREMENT OF THE POSITIVE pi- Mu DECAY LIFETIME
The lifetime for the decay of a {pi} meson into {mu} meson and neutral particle was first measured by Richardson and later by Martinelli and Panofsky. The method was the same in both cases: The fraction of {pi} mesons surviving various times of flight is measured by placing photographic detectors at various path lengths from the target. In the experiment reported here we observe the time lag between the two bursts of fluorescence due to mesons decaying in a scintillation crystal. The first burst is due to the stopping of the entering {pi} meson, the second to the {mu}-meson. As is shown in Fig. 1, a particle penetrating the first and into the second crystal starts the sweep (10{sup -8} sec/mm) of an oscilloscope. The pulses in the second crystal are delayed 0.5 x 10{sup -6} sec to allow the sweep to start and brighten and are then photographed. If the responsible particle is a {pi}{sup +} meson which stops in the crystal, it undergoes {pi}-{mu} decay and two pulses appear on the trace. The {mu}{sup +} meson has a range of only 2 mm in the crystal. If its decay electron is detected some time (.5-2.5 x 10{sup -6} …
Date:
May 10, 1950
Creator:
Chamberlain, O.; Mozely, R.F.; Steinberger, J. & Wiegand, C.
Object Type:
Report
System:
The UNT Digital Library
'Fission' of Medium Weight Elements
The fission reaction has been observed with high energy accelerator projectiles for elements as light as tantalum but has not been reported for medium weight elements. The present note presents evidence for the occurrence of reactions which are probably most properly described by the term 'fission' and which seem to occur with very small yield throughout the region where this type of reaction is only slightly exoergic or even endoergic with respect to mass balance. In the course of detailed investigation of the spallation of copper and the variation of the product yields with energy of the bombarding particle the threshold for formation of radioactive Cl{sup 38} (38-minute half-life) from elemental studied. The energetically most economical way in which Cl{sup 38} might be spallation reactions is by emission from the bombarded copper nucleus of nucleons in groups such as alpha-particles instead of single nucleons 0 The energetic requirements for the reaction Cu{sup 63}(p,pn6a)Cl{sup 38}, in which the maximum number of alpha-particles are emitted, include (1) the mass difference between the reactants and the products and (2) the excitation energy which the alpha-particles must have in order to pass over the coulombic barrier, Since the reaction is endoergic with respect to …
Date:
May 29, 1950
Creator:
Batzel, Roger T. & Seaborg, G. T.
Object Type:
Report
System:
The UNT Digital Library
Conceptual Design of a Nuclear Ram Jet-Rocket Missile
The conceptual design of a nuclear ram jet-rocket missile is preserved. This missile is a modified, scaled-up AC-210 nuclear ram jet carrying ammonia in the space enclosed by the spike and inlet diffuser. The payload may be a 10,000 pound thermonuclear weapon or equivalent weight of reconnaissance equipment plus local shielding as in the AC-210 missile. The payload for a missile of body size equivalent to the AC-210 will be reduced by the weight of ammonia.
Date:
May 31, 1956
Creator:
Szekely, T.
Object Type:
Report
System:
The UNT Digital Library
Exploratory Scavenging Studies for the Decontamination of Redox Solutions
From introduction: "This report is concerned with exploratory experiments designed to studies the efficiency of a number of scavengers for zirconium and niobium adsorption and to provide preliminary information on the best conditions to employ on the most satisfactory of those scavengers studied, namely Super Filtrol FO. The data in this report include data obtained through October, 1949, and are by no means considered to be final. The investigation is currently being actively continued."
Date:
May 1, 1950
Creator:
Roake, W. E. & Lowe, C. S.
Object Type:
Report
System:
The UNT Digital Library
Equilibrium Relationships for Stripping Uranium from Solutions of Tributyl Phosphate and Hydrocarbon Diluent
Objective: "The laboratory equilibrium study RC-E-1 described in this report was carried out to obtain uranium equilibrium curves at various concentrations of nitric acid and of TBP."
Date:
May 1, 1950
Creator:
Clagett, Fred
Object Type:
Report
System:
The UNT Digital Library
Creep Strength of Uranium Alloys at 1500 and 1800 F
Abstract:"The creep resistance of various uranium binary alloys was investigated at 1500 and 1800 F in vacuum. Tests were made on alloys of uranium with beryllium, columbium, molybdenum, tantalum, titanium, and zirconium and on molybdenum-UO2 composites. Of the alloys examined, those of the uranium-molybdenum system exhibited the best creep resistance. At 1500 F, creep rates of about 0.005%/hr were produced in uranium-molybdenum alloys by a stress of 2500 psi and, at 1800 F, similar creep rates were obtained in composites of 90 wt % molybdenum-10 wt % UO2 by a stress of 12,000 psi."
Date:
May 28, 1953
Creator:
Saller, Henry A.; Stacy, J. T.; Eddy, N. S. & Klebanow, H. L.
Object Type:
Report
System:
The UNT Digital Library