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Office of Scientific & Technical Information Technical Reports
297
Congressional Research Service Reports
119
Texas Patents
62
Texas Attorney General Opinions
41
Technical Report Archive and Image Library
36
Defense Base Closure and Realignment Commission
35
National Advisory Committee for Aeronautics Collection
22
Government Accountability Office Reports
18
Texas Register
11
TRAIL Microcard Collection
10
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Back Band Buckle
Patent for back band buckle. Illustration included.
Date:
October 25, 1904
Creator:
Smith, James B.
Object Type:
Patent
System:
The Portal to Texas History
Cattle-Guard
Patent for a cattle guard to prevent cattle from treading upon railroad tracks. Illustrations included.
Date:
October 25, 1910
Creator:
Reed, Conwell P.
Object Type:
Patent
System:
The Portal to Texas History
Shot report, Holo-17-Holo-22 Rex-9
We report on a series of holographic shots using explosives to generate ejecta from lead. These experiments covered a range of geometries including point initiation and plane wave initiation for the H.E., and using a gas-fill in the cavity where the ejecta was produced. The final experiment, Rex-9 was a Fabry-Perot experiment at Site 300 which provided the velocity history of the lead surface for the purpose of normalizing the code being used to calculate the position of the lead surface in these experiments. The focus of this report is on the experimental technique rather than on the size measurements. We want to insure that the advances in mechanical design and experimental technique that were made during these experiments are preserved in future experiments. 8 figs., 2 tabs.
Date:
October 25, 1990
Creator:
McMillan, C.; Whipkey, R. & Vance, P.
Object Type:
Report
System:
The UNT Digital Library
Fundamental Studies of Water Pretreatment of Coal
During the seventh quarter, water pretreatment experiments were done at lower pressures (1000 psig), with early H{sub 2}O injection or continuous H{sub 2}O injection, and with demineralized coals. In addition, a set of blank experiments was done with all four coals in helium at the following conditions: 350{degrees}C; 4000 psig; 20 minutes. An additional experiment was done with the Zap lignite at atmospheric pressure. Helium was used instead of nitrogen since it can be obtained in highly pure grades. The purpose of the blank experiments is to determine how much of the water pretreatment process is a thermal and/or pressure effort. The residues from the standard water pretreatment experiments with Illinois and Pittsburgh coals were subjected to analysis by TG-FTIR, solvent extraction, solvent swelling, oxygen reactivity index and donor solvent liquefaction. The pyridine extractables were analyzed. With regard to liquefaction behavior, improvements in the yields of oils and toluene solubles are observed for selected Illinois and Pittsburgh coals at longer pretreatment times ({ge} 60 minutes).
Date:
October 25, 1991
Creator:
Serio, M. A.; Solomon, P. R.; Kroo, E.; Charpenay, S. & Bassilakis, R.
Object Type:
Report
System:
The UNT Digital Library
A One Year Study of Radioactivity in Columbia River Fish
This report follows studies of the accumulation of beta omitting radioactive elements in Columbia River fish.
Date:
October 25, 1948
Creator:
Herde, K. E.
Object Type:
Report
System:
The UNT Digital Library
Fabrication of Uranium Wire
From abstract: "The present report describes experimental work performed to establish a procedure for the production of uranium metal wire. In all cases, the size of the initial rod was 1/2 inch diameter. Three materials were used: hot extruded tuballoy rod, high purity cast tuballoy rod, and cast U-235 rod."
Date:
October 25, 1949
Creator:
Anderson, R. E.; Taub, J. M. & Doll, D. T.
Object Type:
Report
System:
The UNT Digital Library
Topics in theoretical surface science
The energetics and structures of clean and adsorbate covered surfaces are investigated in this dissertation. First, the formalism, within the Corrected Effective Medium (CEM) method, for calculating the surface energy of a clean surface is derived. The surface energies for many different metals and their low index surfaces are presented. The minimization of the surface energy is then used to predict the multilayer relaxation of the Al(111), (100), Ni(100), (110) and Fe(100) surfaces. Extensions of the surface CEM formalism to calculate the binding energies of ordered adsorbates on metals surfaces are also derived. The minimization of the binding energy allowed determination of the binding heights, sites and the extent of induced multilayer relaxation for H and N atoms on the Fe(110), (100) and W(110) surfaces. The last topic deals with the dynamics of the epitaxial growth of metals on metal surfaces. The CEM method was first modified by making approximations to enable faster evaluations of the potential and its corresponding forces for molecular dynamics simulations. The goal of these simulations was to identify the important steps in the formation of equilibrium epitaxial structures. 180 refs., 31 figs., 18 tabs.
Date:
October 25, 1991
Creator:
Todd, R.
Object Type:
Report
System:
The UNT Digital Library
Simultaneous evaluation of interrelated cross sections by generalized least-squares and related data file requirements
Though several cross sections have been designated as standards, they are not basic units and are interrelated by ratio measurements. Moreover, as such interactions as /sup 6/Li + n and /sup 10/B + n involve only two and three cross sections respectively, total cross section data become useful for the evaluation process. The problem can be resolved by a simultaneous evaluation of the available absolute and shape data for cross sections, ratios, sums, and average cross sections by generalized least-squares. A data file is required for such evaluation which contains the originally measured quantities and their uncertainty components. Establishing such a file is a substantial task because data were frequently reported as absolute cross sections where ratios were measured without sufficient information on which reference cross section and which normalization were utilized. Reporting of uncertainties is often missing or incomplete. The requirements for data reporting will be discussed.
Date:
October 25, 1984
Creator:
Poenitz, W.P.
Object Type:
Article
System:
The UNT Digital Library
A Recirculating Supercritical Water Loop
From Abstract: "A recirculating high-pressure stainless steel loop was developed for the study of heat transfer from small-bore tubes to supercritical water. It was found that under certain conditions, hot spots developed on the test section. The conditions leading to the formation of hot spots were investigated; the results of several runs are tabulated here."
Date:
October 25, 1954
Creator:
Epstein, H. M.; Goldthwaite, W. H.; Chastain, Joel W. & Fawcett, Sherwood L.
Object Type:
Report
System:
The UNT Digital Library
A Recirculating Supercritical Water Loop
From abstract: "A recirculating high-pressure stainless steel loop was developed for the study of heat transfer from small-bore tubes to supercritical water. It was found that under certain conditions, hot spots developed on the test section. The conditions leading to the formation of hot spots were investigated; the results of several runs are tabulated here."
Date:
October 25, 1954
Creator:
Epstein, H. M.; Goldthwaite, W. H.; Chastain, Joel W. & Fawcett, Sherwood L.
Object Type:
Report
System:
The UNT Digital Library
A Photographic Study of Boiling Flow
From abstract: A high speed motion picture study was conducted of boiling flow in a vertical, rectangular channel at atmospheric pressure. Three different visual flow regimes were defined and described.
Date:
October 25, 1963
Creator:
Vohr, John Henry
Object Type:
Report
System:
The UNT Digital Library
FY90 milestone report for the CIT (Compact Ignition Tokamak) project: Localizability of electron-cyclotron heating power
Estimates of the localizability of electron-cyclotron heating power are made for the Compact Ignition Tokamak. A particular heating scenario is examined, namely, the fundamental O-mode, injected nearly perpendicular to the toroidal magnetic field. The absorption depth due to finite T{sub e} is very small, about 1 cm, near the q = 2 surface. Absorption is even better localized near q = 1. Several issues that might lead to degraded localizability are reviewed. Use of an intense, pulsed microwave source is the only issue with a possibly significant impact. 3 refs.
Date:
October 25, 1990
Creator:
Smith, G. R.
Object Type:
Report
System:
The UNT Digital Library
Radiological effects of SRS operations, 1988
A discussion of the offsite effective dose equivalents reported for 1988 SRS releases serves as the basis for this report. Detailed analyses of atmospheric and liquid release trends and their consequences in terms of relative importance among facilities, radionuclides, and exposure pathways have also been included. Releases of radioactivity to the atmosphere were generally lower in 1988 than in 1987. No major unplanned tritium releases were recorded during the year. However, there were three inadvertent releases of Pu-238 from F Area in January, March and October of 160, 32 and 83 uCi, respectively. Radioactive releases to onsite streams from direct discharges and seepage basin migration decreased in 1988. However, as a result of a decrease in the flow rate of the Savannah River in 1988, higher offsite doses were reported. The maximum individual dose, conversely, was down from 1987. This decrease reflected the fact that the maximum individual dose is most significantly affected by the cesium concentration in fish. In terms of largest contributors to dose, the releases were dominated by tritium, Cs-137 and to a much lesser extent Sr-90. With respect to the offsite population, doses from atmospheric releases are generally higher than those from liquid releases, and this …
Date:
October 25, 1989
Creator:
Bauer, L.R.
Object Type:
Report
System:
The UNT Digital Library
System for intelligent teleoperation research
The Automation Technology Branch of NASA Langley Research Center is developing a research capability in the field of artificial intelligence, particularly as applicable in teleoperator/robotics development for remote space operations. As a testbed for experimentation in these areas, a system concept has been developed and is being implemented. This system, termed DAISIE (Distributed Artificially Intelligent System for Interacting with the Environment), interfaces the key processes of perception, reasoning, and manipulation by linking hardware sensors and manipulators to a modular artificial intelligence (AI) software system in a hierarchical control structure. Verification experiments have been performed: one experiment used a blocksworld database and planner embedded in the DAISIE system to intelligently manipulate a simple physical environment; the other experiment implemented a joint-space collision avoidance algorithm. Continued system development is planned.
Date:
October 25, 1983
Creator:
Orlando, N.E.
Object Type:
Article
System:
The UNT Digital Library
Magnetic-field design of the accumulator multipole magnet
A multiple magnet using the FFAG graded coil technique has been designed with the aid of the two dimensional magnet modelling code Poisson. Rapid design interaction in problem formulation has been achieved with a new finite element mesh generator in which mesh densities can be manipulated to overcome difficulties in mesh topologies when spanning the grid over the problem domain.
Date:
October 25, 1983
Creator:
Oleksiuk, L.
Object Type:
Report
System:
The UNT Digital Library
Optical techniques for measurement of high temperatures
The availability of instrumentation to measure the high outlet gas temperature of a particle bed reactor is a topic of some concern. There are a number of possible techniques with advantages and disadvantages. In order to provide some baseline choice of instrumentation, a review has been conducted of these various technologies. This report summarizes the results of this review for a group of technologies loosely defined as optical techniques (excluding optical pyrometry). The review has concentrated on a number of questions for each technology investigated. These are: (1) Description of the technology, (2) Anticipated sensitivity and accuracy, (3) Requirements for implementation, (4) Necessary development time and costs, (5) Advantages and disadvantages of the technology. Each of these areas was considered for a technology and a large number of technologies were considered in a review of the literature. Based upon this review it was found that a large number of methods exist to measure temperatures in excess of 2000 K. None of the methods found were ideal. Four methods, however, appeared to warrant further consideration: opto-mechanical expansion thermometry, surface Raman spectroscopy, gas-phase Raman spectroscopy and coherent anti-Stokes Raman spectroscopy (CARS). These techniques will be discussed further in this document.
Date:
October 25, 1991
Creator:
Veligdan, J.T.
Object Type:
Report
System:
The UNT Digital Library
Use of total beta counts to estimate GI tract dose rates
It was the practice for several years to estimate the potential dose rate to the gastrointestinal from sanitary water sources by evaluating the results of radiochemical analysis of individual nuclides. The proposed method estimates the GI tract dose from Pasco and Richland domestic water from measurements of the total beta activity, and permits more frequent and more economical evaluation of a variable source of radiation exposure. Beginning with 1964 data, the GI tract dose rate for Richland and Pasco sanitary water has been obtained by multiplying the total beta count by a conversion factor derived from the historical relationship between the radiochemical analyses and the total beta counts. Either the accumulation of more data or changes in the relative abundance of the more significant nuclides in the water may result in changes in this factor.
Date:
October 25, 1965
Creator:
Hall, R.B.
Object Type:
Report
System:
The UNT Digital Library
Analysis of beryllium parts for cosmos 954
Operation Morning Light was conducted to search for the reactor core of Cosmos 954, the nuclear-powered Soviet satellite that crashed in the northwest territories of Canada in late January 1978. many of the satellite parts found were beryllium. This study discusses the geometry, condition, microstructure, and possible fabrication history of these beryllium parts.
Date:
October 25, 1978
Creator:
Hanafee, J.E.
Object Type:
Report
System:
The UNT Digital Library
Kinetic models of hydrocarbon generation
We are carrying out an integrated program of laboratory experiments, kinetics modeling, and basin thermal history modeling in order to better understand the natural breakdown of organic matter into oil and gas. Our kinetic models of organic maturation are being used to better understand the coupling of generation, cracking, expulsion, and overpressuring in both the laboratory and geologic setting. Currently we are carrying out chemical experiments and developing more efficient chemical kinetic modeling schemes to obtain a better understanding of expulsion and cracking from lean source rocks and from hydrogen-poor (terrestrial) organic source material. We verify the chemical kinetic models by integrating them with thermal history models of hydrocarbon-producing sediments and comparing predicted and observed characteristics of the hydrocarbon occurrence in a variety of settings. We intend to apply this approach to evaluate the potential for deep gas resources in the Pacific Northwest and in the Louisiana Gulf Coast. 11 refs., 4 figs.
Date:
October 25, 1990
Creator:
Burnham, A. K. & Sweeney, J. J.
Object Type:
Article
System:
The UNT Digital Library
Nondestructive assay instrumentation for a Savannah River Plant upgrade project
We have designed and are developing three different computer-based spectrometer systems. Two will measure the concentration of Pu solutions by gamma-ray and by stimulated x-ray fluorescence emissions of solid samples in closed containers. All systems are coupled to remote terminals and bar code readers, and also to mini-computer based multichannel analyzers, which in turn are linked to another computer to provide a state-of-the-art nondestructive assay capability. Installation at the Savannah River Plant is planned in late 1985. 7 references.
Date:
October 25, 1984
Creator:
Camp, D.; Eckels, D.; Gunnink, R.; Prindle, A. & Ruhter, W.
Object Type:
Article
System:
The UNT Digital Library
GeoProducts WEN-2 well, Wendel-Amedee, California
The GeoProducts WEN-2 well, drilled 2200 feet northwest of Wendel Hot Springs in Lassen County, California, penetrated 4330 feet (1320 meters) of Tertiary basalt flows and volcanoclastics. Production of 251/sup 0/F (122/sup 0/C) thermal fluids comes either from a fault or from intergranular permeability in a 570-foot thick quartzite conglomerate channel overlying the granitic basement rocks at a depth of 4900 feet. The chemistry, temperature and hydrostatic head of the resource in WEN-2 are very similar to that of WEN-1 to the northeast. Unknown faults in the granitic basement rocks, other than the Wendel fault, may be important channelways for the geothermal system. 4 refs., 3 figs.
Date:
October 25, 1985
Creator:
Sibbett, B. S.
Object Type:
Report
System:
The UNT Digital Library
Temperature Control Feedback Loops for the Linac Upgrade Side Coupled Cavities at Fermilab
The linac upgrade project at Fermilab will replace the last 4 drift-tube linac tanks with seven side coupled cavity strings. This will increase the beam energy from 200 to 400 MeV at injection into the Booster accelerator. The main objective of the temperature loop is to control the resonant frequency of the cavity strings. A cavity string will constant of 4 sections connected with bridge couplers driven with a 12 MW klystron at 805 MHz. Each section is a side coupled cavity chain consisting of 16 accelerating cells and 15 side coupling cells. For the linac upgrade, 7 full cavity strings will be used. A separate temperature control system is planned for each of the 28 accelerating sections, the two transition sections, and the debuncher section. The cavity strings will be tuned to resonance for full power beam loaded conditions. A separate frequency loop is planned that will sample the phase difference between a monitor placed in the end cell of each section and the rf drive. The frequency loop will control the set point for the temperature loop which will be able to maintain the resonant frequency through periods within beam or rf power. The frequency loop will need …
Date:
October 25, 1990
Creator:
Crisp, Jim
Object Type:
Report
System:
The UNT Digital Library
(Biotechnology for the conversion of lignocellulosics)
This report summarizes the results of the traveler's participation in the International Energy Agency (IEA) Network planning meeting for Biotechnology for the Conversion of Lignocellulosics,'' held at the Institut Francais du Petrole (IFP), Rueil-Malmaison, France. It also summarizes the results of discussions held at Aston University, Birmingham, UK, with Dr. Martin Beevers with whom the traveler is attempting to initiate a collaborative research project that will be beneficial to ongoing research programs at Oak Ridge National Laboratory (ORNL). The itinerary for the trip is given in Appendix A; the names of the people contacted are listed in Appendix B. Also, pertinent information about the Institut Francais du Petrole is attached (Appendix C). 1 tab.
Date:
October 25, 1990
Creator:
Woodward, J.
Object Type:
Report
System:
The UNT Digital Library
Thin film battery/fuel cell power generating system. Second quarterly report, July 1, 1978-September 30, 1978
Progress is reported on the development of the high-temperature solid-oxide electrolyte fuel cell. Oxygen loss behavior in the lanthanum chromite interconnection material was investigated by the microweighing technique. RF sputtered interconnection bands have been produced that display suitable density to permit the technique to be used in the construction of cell stacks. Electrochemical vapor deposition equipment has been modified to enable preparation of 20 cell fuel cell stack fabrication to proceed. The fuel electrode process and equipment have been improved to permit fabrication of long (0.3 m) tube segments, showing good mechanical and electrical properties. Long tube sections have been used to fabricate air electrodes, having desired porosity without loss of conductivity. Porous support tube work (involving equipment and fabrication techniques) is being extended to the fabrication of 0.3 m long tubes, needed for the fabrication of the 20 cell stacks. Work continues on the construction of the 5 station fuel cell stack life test facility. Theoretical interpretations of fuel cell stack polarization losses have been compared with actual measured losses in the 5 cell fuel cell stack previously tested in the program. Analyses of the intercell leakage current in the five cell fuel cell stack that was life tested …
Date:
October 25, 1978
Creator:
Feduska, W.
Object Type:
Report
System:
The UNT Digital Library