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Effect of Heat Flux on the Corrosion of Aluminum by Water. Part Iii. Final Report on Tests Relative to the High-Flux Isotope Reactor
The effect of very high heat fluxes on the corrosion of 1100 and 6061 aluminum alloys by water was investigated. The test conditions generally simulated those expected to exist during operation of the High-Flux lsotope Reactor. At heat fluxes between 1 and 2 x l0/sup 6/ Btu/hr-ft/sup 2/ and with coolant temperatures and velocities in the ranges of 13l to 250 deg F and 3l to 51 fps, respectively, a layer of boehmite ( alpha Al/sub 2/O/sub 3/- H/sub 2/0), which has low thermal conductivity, formed on the water-cooled aluminum surfaces during test. When only relatively thin films formed, the boehmite adhered tightly to the aluminum, but in those cases where relatively thick films formed, some boehmite spontaneously spalled from the surface. The rate at which the boehmite formed on the surface (and consequently the rate at which the aluminum temperature increased) was a function of the temperature at the specimen-water interface and the pH of the coolant. The lower the temperature and the lower the pH (in the range of 5.0 to 6.5 with HNO/sub 3/), the lower the rate of corrosion- product formation. Within the ranges investigated, pressure and flow rate were without effect, and the same results …
Date:
December 20, 1961
Creator:
Griess, J. C.; Savage, H. C.; Rainwater, J. G.; Mauney, T. H. & English, J. L.
Object Type:
Report
System:
The UNT Digital Library
SEPARATION OF TRANSPLUTONIUMS FROM LANTHANIDES BY TERTIARY AMINE EXTRACTION
None
Date:
December 20, 1961
Creator:
Baybarz, R.D. & Weaver, B.
Object Type:
Report
System:
The UNT Digital Library
Noise Considerations in Nuclear Pulse Amplifiers
The effects of certain pulse-shaping networks on the signal-to-noise ratio of a nuclear pulse amplifier were considered. The shaping networks discussed are: equal RC-integrating and RC-differentiating time constant, single- delay-line clipper and RC integrator, and doubledelay-line clipper and RC integrator. The effects of these networks on the signal, when high count rates and overload pulses are present, were also considered. Equations and curves were developed for the energy resolution (signal-tonoise ratio) and resolving time (related to the ability to operate at high counting rates) of the networks. Experimental results are shown for the energy resolution of the types of pulse- shaping networks considered. (auth)
Date:
December 20, 1961
Creator:
Landis, D. A.
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Internal dosimetry technical basis manual
The internal dosimetry program at the Savannah River Site (SRS) consists of radiation protection programs and activities used to detect and evaluate intakes of radioactive material by radiation workers. Examples of such programs are: air monitoring; surface contamination monitoring; personal contamination surveys; radiobioassay; and dose assessment. The objectives of the internal dosimetry program are to demonstrate that the workplace is under control and that workers are not being exposed to radioactive material, and to detect and assess inadvertent intakes in the workplace. The Savannah River Site Internal Dosimetry Technical Basis Manual (TBM) is intended to provide a technical and philosophical discussion of the radiobioassay and dose assessment aspects of the internal dosimetry program. Detailed information on air, surface, and personal contamination surveillance programs is not given in this manual except for how these programs interface with routine and special bioassay programs.
Date:
December 20, 1990
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Modified Murnaghan equation of state applied to shock compression of silica, basalt, and dolomite
An equation of state previously used by the author is developed further and applied to geologic media. The equation is of the same form as the Murnaghan equation of state, but with the elastic constant terms replaced by the cohesive energy density (internal pressure), and the exponential term given as a sum of the Gruneisen parameter and the gaseous adiabatic exponent. Data for shock compression of silica, basalt, and dolomite are analyzed according to the equation.
Date:
December 20, 1965
Creator:
Rogers, L.A.
Object Type:
Article
System:
The UNT Digital Library
Assessment of the response of spent fuel transports to malevolent acts
This paper describes the results of a program conducted at Sandia National Laboratories (SNL) for the US Department of Energy to provide an experimental data base for more accurately assessing the radiological consequences from a hypothetical sabotage attack on a spent fuel shipping cask. The primary objectives of the program were limited to: (1) evaluating the effectiveness of selected high explosive devices (HED) in breaching full-size spent fuel casks, (2) quantifying and characterizing relevant aerosol properties of the released fuel, and (3) using the resulting experimental data to evaluate the radiological health consequences resulting from a hypothetical sabotage attack on a spent fuel shipping cask in a densely populated area. Subscale and full-scale experiments in conjunction with an analytical modeling study were performed to meet the programmatic objectives. The data from this program indicate that the Urban Studies greatly overestimated the impact of malevolent acts directed at spent fuel casks in urban environs. From that standpoint this work could be the basis of additional regulatory revisions of the NRC physical protection requirements. In a larger sense this work can also be the basis of more credible worst case analyses since it defines the actual result of an event which is …
Date:
December 20, 1983
Creator:
Sandoval, R.P.
Object Type:
Article
System:
The UNT Digital Library
Review of California's geothermal-related legislative and regulatory activity through 1979. Report No. 1116
The findings of the 1977 State Geothermal Resources Task Force are divided into four main categories: well siting, power plant siting; environmental problems; and miscellaneous areas. California's 1978 legislation is described using the same categories. The key difficulties still harassing the state's geothermal industry are described including: control over air quality at the Geysers; powerplant finance; a binary cycle demonstration; federal land use decisions; and miscellaneous concerns. (MHR)
Date:
December 20, 1979
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Extraordinary Light-Trapping Enhancement in Silicon Solar Cell Patterned with Graded Photonic Super-Crystals
This article explores light-trapping enhancement in newly discovered graded photonic super-crystals (GPSCs) with dual periodicity and dual basis.
Date:
December 7, 2017
Creator:
Hassan, Safaa; Lowell, David; Adewole, Murthada; George, David; Zhang, Hualiang & Lin, Yuankun
Object Type:
Article
System:
The UNT Digital Library
Materials testing using laser energy deposition
A convenient method for determining the elastic constants of materials has been devised using the energy from a Q-switched neodymium-glass laser. Stress waves are induced in materials having circular rod or rectangular bar geometries by the absorption of energy from the laser. The wave transit times through the material are recorded with a piezoelectric transducer. Both dilatation and shear wave velocities are determined in a single test using an ultrasonic technique and these velocities are used to calculate the elastic constants of the material. A comparison of the constants determined for ten common engineering materials using this method is made with constants derived using the conventional ultrasonic pulse technique and agreement is shown to be about one percent in most cases. Effects of material geometry are discussed and surface damage to the material caused by laser energy absorption is shown.
Date:
December 20, 1977
Creator:
Wilcox, W.W. & Calder, C.A.
Object Type:
Article
System:
The UNT Digital Library
Monopole search using an accelerator detector
A neutrino detector at the Brookhaven AGS has been used to investigate the feasibility of using an already constructed apparatus for GUT monopole searches. A flux limit (90%CL) of 5.2 x 10/sup -12/ cm/sup -2/ sec/sup -1/ str/sup -1/ was found. The limitations of such an approach are discussed.
Date:
December 20, 1983
Creator:
Ahrenes, L.A.; Aronson, S.H.; Connolly, P.L.; Erickson, T.E.; Gibbard, B.G.; Montag, M. et al.
Object Type:
Article
System:
The UNT Digital Library
Lithium--water--air battery project: progress during the months of August--November. [Development of prototype Al/air cell]
Work done on the Lithium--Water--Air Battery Research Program in the work period August through November, 1977, is summarized. A prototype single-cell fuel cell was developed. The single galvanic cell consists of two 30-cm square aluminum plates separated by a two-faced air cathode mockup. The purposes of the model are to determine ease and cost of electrode servicing and weight and manufacturing cost of the hardware. Projections of fuel cell performance and cost were made, based on the prototype cell and the performance of cells of similar anode--cathode spacing produced by Lockheed Missiles and Space Company. Performance is a strong function of the weight of water carried in the fuel cell, as water is the limiting reactant when sufficient aluminum is carried for a vehicle range of 1600 km. Research concerning the electrochemistry of calcium in aqueous chloride--hydroxide electrolytes is summarized with reference to a recent presentation of the work at the Fall Meeting of the Electrochemical Society. Polarization curves were obtained for the aluminum alloy used by Lockheed in fuel cell research. The experimental data agree closely with Lockheed's published results. 9 figures, 1 table.
Date:
December 20, 1977
Creator:
Cooper, J.F.; Hosmer, P.K.; Krikorian, O.; Kelly, E. & Parrish, W.
Object Type:
Report
System:
The UNT Digital Library
[News Clip: Lawyer ads]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story. This story aired at
Date:
December 20, 2009, 10:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
BX in situ oil shale project. Quarterly technical progress report, September 1-November 30, 1981
September 1, 1981-November 30, 1981, was the fourth consecutive quarter of superheated steam injection at the BX In Situ Oil Shale Project. During the quarter, 117,520 barrels of water as steam were injected into project injection wells at an average wellhead temperature of 715/sup 0/F and an average wellhead pressure of 1378 PSIG. During the same period, 148,516 barrels of fluid were produced from the project production wells for a produced-to-injected fluid ratio of 1.26 to 1.0. Net oil production for the quarter was 169 barrels.
Date:
December 20, 1981
Creator:
Dougan, P. M.
Object Type:
Report
System:
The UNT Digital Library
Directions for possible upgrades of the Mirror Fusion Test Facility (MFTF)
The Mirror Fusion Test Facility (MFTF) may be upgraded by extending the time of plasma sustenance in an approach to steady-state operation and/or by increasing the neutral-beam injection energy. Some parameter bounds for these upgrades are discussed as they relate to a definition of the required neutral-beam development.
Date:
December 20, 1977
Creator:
Damm, C. C.; Coensgen, F. H.; Devoto, R. S.; Molvik, A. W.; Porter, G. D.; Shearer, J. W. et al.
Object Type:
Article
System:
The UNT Digital Library
Computor program for mathematical evaluation of the Rocky Flats nuclear accident dosimetry system
A computer program has been developed to facilitate the evaluation of the Rocky Flats Emergency Dosimetry System. This program evaluates data to determine the neutron fluence associated with a criticality accident. It is necessary to obtain information about the critical system for personnel dose estimates. Information pertaining to the geometry and position of the critical material and orientation of personnel, with respect to the material, is essential to supplement the calculations contained in this program.
Date:
December 20, 1977
Creator:
Wood, C. B.
Object Type:
Report
System:
The UNT Digital Library
The Mangum Star (Mangum, Okla.), Vol. 30, No. 27, Ed. 1 Thursday, December 20, 1917
Weekly newspaper from Mangum, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 20, 1917
Creator:
Jessee, Elmer V.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Mangum Star. (Mangum, Okla. Terr.), Vol. 19, No. 25, Ed. 1 Thursday, December 20, 1906
Weekly newspaper from Mangum, Oklahoma that includes local, territorial, and national news along with advertising.
Date:
December 20, 1906
Creator:
Echols, R. C.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Oklahoma State Register (Guthrie, Okla.), Vol. 27, No. 32, Ed. 1 Thursday, December 20, 1917
Weekly newspaper from Guthrie, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 20, 1917
Creator:
Golobie, John
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Oklahoma Leader (Guthrie, Okla.), Vol. 28, No. 45, Ed. 1 Friday, December 20, 1918
Weekly newspaper from Guthrie, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 20, 1918
Creator:
Niblack, Leslie G.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Oklahoma Leader (Guthrie, Okla.), Vol. 28, No. 1, Ed. 1 Thursday, December 20, 1917
Weekly newspaper from Guthrie, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 20, 1917
Creator:
Niblack, Leslie G.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Taloga Times-Advocate (Taloga, Okla.), Vol. 30, No. 28, Ed. 1 Thursday, December 20, 1923
Weekly newspaper from Taloga, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 20, 1923
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Greer Weekly Sun. (Mangum, Okla.), Vol. 5, No. 27, Ed. 1 Thursday, December 20, 1900
Weekly newspaper from Mangum, Oklahoma Territory that includes local, territorial, and national news along with advertising.
Date:
December 20, 1900
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Cushing Independent (Cushing, Okla.), Vol. 22, No. 17, Ed. 1 Thursday, December 20, 1917
Weekly newspaper from Cushing, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 20, 1917
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The New State. (Haileyville, Okla.), Vol. 3, No. 41, Ed. 1 Friday, December 20, 1907
Weekly newspaper from Haileyville, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 20, 1907
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History