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Office of Scientific & Technical Information Technical Reports
2,624
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1,370
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598
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442
Defense Base Closure and Realignment Commission
342
Government Accountability Office Reports
305
Technical Report Archive and Image Library
302
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Artificial Intelligence: Overview, Recent Advances, and Considerations for the 118th Congress
Report providing a background on artificial intelligence (AI), recent advances, benefits and risks of AI tools. current federal laws addressing AI, perspectives on regulating AI, and other considerations for the 118th Congress.
Date:
August 4, 2023
Creator:
Harris, Laurie A.
Object Type:
Report
System:
The UNT Digital Library
Balanced Dairying: Economics, Volume 15, Number 2, December 1995
Newsletter of the Texas Agricultural Extension Service discussing topics related to economic aspects of raising dairy cows, dairy production, and managing dairy operations. This issue has a feature article about: "Where Will Milk for Manufacturing be Produced?"
Date:
December 4, 1995
Creator:
Texas Agricultural Extension Service
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Texas Register, Volume 48, Number 31, Pages 4225-4328, August 4, 2023
A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date:
August 4, 2023
Creator:
Texas. Secretary of State.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Texas S-R Suspensions by County: 1961
Annual report providing tabular statistical information about license safety responsibility (S-R) suspensions of drivers in Texas for failure to file or show proof of financial responsibility resulting from convictions and accidents, broken down by county and by locations of out-of-state accidents. It also includes very basic overview information about filing proof of financial responsibility.
Date:
January 4, 1962
Creator:
Texas. Department of Public Safety. Statistical Services.
Object Type:
Report
System:
The Portal to Texas History
Texas S-R Suspensions by County: 1960
Annual report providing tabular statistical information about license safety responsibility (S-R) suspensions of drivers in Texas for failure to file or show proof of financial responsibility resulting from convictions and accidents, broken down by county and by locations of out-of-state accidents. It also includes very basic overview information about filing proof of financial responsibility.
Date:
January 4, 1961
Creator:
Texas. Department of Public Safety. Statistical Services.
Object Type:
Report
System:
The Portal to Texas History
Texas Parks & Wildlife News, June 4, 1980
Weekly newsletter discussing natural resources, parks, hunting and fishing, and other information related to the outdoors in Texas.
Date:
June 4, 1980
Creator:
Texas. Parks and Wildlife Department.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Equilibrium Extraction Characteristics of Alkyl Amines and Nuclear Fuels Metals in Nitrate Systems. Progress Report No. V for the Period July 1 - September 30, 1959
Extraction of HNO3 by triaryl amine was studied by equilibrating equal volumes of aqueous and organic phases at 25C. At HNO3 concentrations of 2 to 10 N the acid in the organic phase in excess of that equivalent in the amine concentration was proportional to the concentration of HNO3 in the equilibrated aqueous phase. other workers report similar results with nitric acid and tri-n-octyl amine in benzene. Zirconium extractions carried out at 10g Zr/1 with 0.35 M TLA nitrate in toluene showed a fourth power dependence of EZR on HNO (aq) over the range 2 to 10N. Maximum distribution ratios calculated from samarium scouting experiments using amines in kerosene were about 5 x 10(-3) for Primene JMT, 10(-4) for TLA, 10(-5) for S-24, and less than zero for DTDA. Distribution rations in the extractions ranged from ERu = 0.12 for 0.35M TLA shaken with an initially new 2N HNO3 solution for 15 minutes. Data on Zr and Ru standardization in TLA solution for spectrophotometric analyses are included.
Date:
December 4, 1959
Creator:
Mason, Edward A. (Edward Allen), 1926-1994. & Vaughen, Victor C.
Object Type:
Report
System:
The UNT Digital Library
Vaporization Processes in a Runaway Reactor
From the point of view of constituents of a fuel element at temperatures between 2500 and 4500 degree K, the fuel elements can be considered to consist of six types of material: carbon, elements less volatile than carbon, 26 moles of rare gases, 21 moles of alkali metals, 17 moles of alkaline earth metals, and 4 moles of miscellaneous volatile elements. Various processes involving the constituents from 2000 to 45000 degree K are considered. Reactivity gain due to can rupture is discussed.
Date:
August 4, 1959
Creator:
Brewer, Leo, 1919-2005
Object Type:
Report
System:
The UNT Digital Library
Heat Transfer Fluids for Fuel Element Cans
The maximum temperature in the interior of the fuel element could be greatly reduced by incorporating a liquid between the fuel element and the outer can to increase-heat transfer rates. It is of interest to consider what liquids would be chemically compatible with graphite and the actinide carbides. Elements which melt below 1100 and boil above 1400 deg C that form no stable solid carbides, include Cu, Ga, TI, Ge, Sn, Pb, Sb, Bi, and compounds include GeP, GeS, GaP, Ga/sub 2/S, GaTe, GaAs, SnTe, Sm/sub 3/As/sub 2/, Sb/sub 3/Te/sub 2/, Zn/sub 3/Sb/sub 2/, Zn/sub 3/P/sub 2/, ZnS, ZnTe, and Zn/s ub 3/As/sub 2/. Some of these compounds have equilibrium pressures that might be considered too high, but they may actually vaporize slowly enough because of low vaporization coefficients to make them suitable. There are probably rot enough data nor adequate theories for predicting the rates, and Langmuir type vaporization experiments would be necessary to determine the rates of vaporization of these compounds. The main problem in the use of a heat transfer fluid is that of reaction between the fluid and the actinide carbides. Thermodynamically extensive attack would be expected. However, it may be possible to make the rate …
Date:
August 4, 1959
Creator:
Brewer, Leo, 1919-2005
Object Type:
Report
System:
The UNT Digital Library
Fate of Fission Product Gases in the Coolant Stream
The quantity and characteristics of fission products in coolant gases due to leaking fuel elements are discussed. It is concluded that the rare gases, the alkali metals, the halides, and Sb may act as permanent gases to a considerable extent. The other fission products are expected to condense out completely on walls or as dust consisting of metals, carbides, and oxides.
Date:
August 4, 1959
Creator:
Brewer, Leo, 1919-2005
Object Type:
Report
System:
The UNT Digital Library
The Propagation of Spherical Shock Waves
This technical report is a summary of unclassified theoretical work on propagation of one-dimensional shock waves and on the propagation of spherical shock waves in gases.
Date:
May 4, 1953
Creator:
Ungar, Eric E.
Object Type:
Report
System:
The UNT Digital Library
ORR Startup Accident and Cooling Flow Coastdown Analog Analysis
Startup accident and pump run-down on the ORR have been simulated on the Reactor Controls Analog Facility. At full flow the 150% level scram (45 Mv) easily terminates the startup accident before the metal temperature gets above 180°F. For very low flows typical of criticality runs, temperature coefficients turn the excursion before it reaches 150% of full power, and temperatures climb to boiling, a potentially hazardous condition. (This same behavior can occur at full flow is the power is increased to the point where the level scram must be set above 50 Mw).
Date:
January 4, 1961
Creator:
Stone, R. S. & Colomb, A. L.
Object Type:
Report
System:
The UNT Digital Library
A Statistical Model of Nuclear Level Spacings
A generalization of Wigner's simple model for the distribution of nuclear level spacings is studied. It is based on a stochastic process which reproduces the correct joing probability distribution of N enerfy levels for small spacings. The case N=3, which includes the effect of the correlation between adjacent spacings, is discussed in detail. The resulting distribution and the correlation coefficient are compared with experimental data. No definite conclusion can be drawn except to say that the effect of the correlations on the spacing distributions on the spacing distribution is very small.
Date:
December 4, 1960
Creator:
Dresner, L. & Inönü, E.
Object Type:
Report
System:
The UNT Digital Library
Experimental Determination of an Adequate Fission Chamber Location in the ORR Pool
An experiment was performed at the ORR in order to find a good fission chamber location. Two locations on the pool side of the reactor tank were explored with a one inch diameter fission chamber. The thermal neutron flux attention was found to vary nearly exponentially with distance, and no shadowing effect could be seen during a reactor startup. The fission products high gamma flux could be discriminated without difficulties. Both positions seem to be adequate to locate a reactor control fission channel.
Date:
November 4, 1960
Creator:
Roux, D. P. & Colomb, A. L.
Object Type:
Report
System:
The UNT Digital Library
Compilation of Requests for Nuclear Cross Section Measurements
This report is a working document of the UB AEC Nuclear Cross Sections Advisory Group and is issued about twice a year for the purpose of stimulating important cross section measurements. The requests listed in this report have originated from various Atomic Energy Commission contractors, the Advisory Committee on Reactor Physics, and the Nuclear Cross Sections Advisory Group. The distribution is limited to members of the US Nuclear Cross Sections Advisory Group (NCSAG), the US Advisory Committee on Reactor Physics (ACRP), the Tripartite Nuclear Cross Sections Committee (TNCC), the European-American Nuclear Data Committee (EANDC), to US AEC off-site contractors, and to the requestors and measurers of the cross sections listed in this report. The contents of this document are not to be republished in part or in full without special permission of the chairman of the NCSAG, The unpublished data which appear in this report must not be quoted in publications without permission of the experimenter.
Date:
November 4, 1960
Creator:
Harvey, John A.
Object Type:
Report
System:
The UNT Digital Library
Description of the Ibm-704 Code for the Calculation of Concentration Transients in the HRT
The calculation of concentration transients caused by mixing in the interconnected three-body system of the fuel dump tanks, core and blanket has been coded for the IBM-704. The system of equations includes material balances, the dependence of critical temperature on core and blanket concentrations, and the effect of temperature (density) changes on flow rates. The controllable flow rates, the fuel dump tank weight and the initial conditions are input variables. Outputs include core and blanket concentrations, critical temperature, concentration ratio and power ratio. The code has been used to compute transients during a number of operating situations.
Date:
October 4, 1960
Creator:
Piper, H. B. & Haubenreich, P. N.
Object Type:
Report
System:
The UNT Digital Library
Fundamental Studies in Heat Transfer and Fluid Mechanics, Status Report July 1, 1959- Feb 29, 1960
Experimental determination of heat-transfer coefficients, burnout heat fluxes, and friction factors have been made for swirl flow of low-and moderate-pressure water through electrically heated aluminum, nickel, and copper tubes containing full-length Inconel twisted tapes. For nonboiling conditions, swirl-flow heat-transfer coefficient were successfully correlated with both the Froude modulus (the ratio of inertial to centrifugal forces) and a grouping of the Grashof and Reynolds moduli (ratio of buoyant to inertial forces).
Date:
October 4, 1960
Creator:
Hoffman, H. W.; Gambill, W. R.; Keyes, J. J., Jr. & Kidd, G. J., Jr.
Object Type:
Report
System:
The UNT Digital Library
Core Levitation in the EOCR in Case of Main Coolant Pipe Failure
This memorandum summarizes the results of an analysis to determine the extent of displacement of the EOCR core due to blowdown in case of several postulated hot main gas coolant pipe failures. Results show that the core will be damaged for any hot pipe double-ended failure. Excepting the improbable case of no coolant flow existing proper to the break, the core will be damaged for any hot pipe fracture exposing a total flow area to the atmosphere equal to that of one pipe. Smaller breaks will probably be safe in this respect.
Date:
August 4, 1959
Creator:
Fontana, M. H.
Object Type:
Report
System:
The UNT Digital Library
Unit Operations Section Monthly Progress Report June 1959
The addition of a surface active agent to an aqeous-organic interface produced a resistance to mass transfer equivalent to slightly more than 1 cm of water. Five semicontinuous Druhm runs were made with 1/2in. thick MgO liners and terminated due to either failures of the UFe nozzle or a top gasket leak. In preliminary scale-up tests of the flame calcination equipment, a maximum feed rate equivalent to 720 g oxides/hr was achieved using a 3-in. i.d. magnesia reflector with an outside wall temperature of 1500°C.
Date:
September 4, 1959
Creator:
Bresee, J. C.; Haas, P. A.; Watson, C. D.; Whatley, M. E. & Horton, R. W.
Object Type:
Report
System:
The UNT Digital Library
Effect of HRT Core Sample Holder Upon Core Flow Pattern and Pressure Drop
The measured pressure drop across the reactor core, with the sample holder in place, is 6.9 psi, more than twice the estimated value. Better estimates, based on more rigorous mathematical analysis, should be possible for future problems of this type. The 2% density difference which produced the relatively high velocity of approximately 1 fps, in this experiment, will result from a temperature difference of about 8 C. It is concluded that the bulk fluid temperature near the sample holder will be less than 8 C above the average temperature at the same elevation in the core.
Date:
February 4, 1957
Creator:
Hannaford, B. A.
Object Type:
Report
System:
The UNT Digital Library
High Pressure Recombination Loop Progress Report
The operation and design of a high pressure recombination loop for the recombination of H2, D2, and O2 produced by the radiolytic decomposition of water which is used a solvent for fuel in the homogeneous reactors are presented.
Date:
January 4, 1957
Creator:
Harley, P. H.
Object Type:
Report
System:
The UNT Digital Library
APPR-1 Type Absorber Rod Irradiation Test -- Irradiation Request ORNL MTR-29
In order to evaluate the behavior of an APPR type absorber rod, an irradiation test program has been established. Approximately 21 more samples are planned for testing under this request. The request proposes testing a full size APPR-1 type control rod in the MTR. The objective of the test is to better evaluate the neutron absorbing material proposed for the APPR-1 control rod.
Date:
January 4, 1957
Creator:
Gross, E. E. & Schaffter, L. D.
Object Type:
Report
System:
The UNT Digital Library
Newsletter of Texas State Representative Art Fierro: Volume 1, June 2019
Newsletter of Art Fierro for his constituents in district 79 discussing news, activities, and various updates related to work in the Texas legislature. It focuses on the 86th Legislative Session wrap-up, including the first bill signed by the Governor and other actions.
Date:
June 4, 2019
Creator:
Fierro, Peter Arthur
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Texas Inmate Monthly Report: [December 2021], Part 2
Monthly report issued by the Texas Department of Criminal Justice providing statistical information about numbers and categories of inmates held in various locations across Texas.
Date:
January 4, 2022
Creator:
Texas. Department of Criminal Justice.
Object Type:
Report
System:
The Portal to Texas History