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1,944
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Texas Motor Vehicle Traffic Accident Summaries
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Fiscal Year 1989
17
Summary of All Reported Accidents in Rural Areas of Texas
14
Summary of All Reported Accidents in the State of Texas
14
San Antonio Board of Adjustment Monthly Report
12
San Antonio Board of Review for Historic Districts and Landmarks Monthly Report
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Activities and Operations of the Advanced Computing Research Facility : November 1987-December 1988
Report on the activities of Argonne Advanced Computing Research Facility, including LAPACK, vectorizing compilers, algorithm design and restructuring, automated deduction, three-dimensional scientific visualization, and graphics trace facilities.
Date:
January 1989
Creator:
Pieper, Gail W.
System:
The UNT Digital Library
Adaptive contact elements for three-dimensional explicit transient analysis
A finite element method was developed for treating the mechanics of contact between deformable bodies. The method uses a family of adaptive interface elements, which were based on the penalty method, to handle the changing contact configurations that can occur between discretized contacting bodies. The nodal connectivity of these interface elements was allowed to change during the computations in order to accommodate finite sliding. The infusion of these elements in the interface satisfies the stress equilibrium condition during contact. Explicit forms for the nodal internal forces are presented. The methodology has been coded and several sample problems are presented. 23 refs., 29 figs., 6 tabs.
Date:
January 1, 1989
Creator:
Kulak, R.F.
System:
The UNT Digital Library
Advanced alternate planar geometry solid oxide fuel cells
During this quarter, progress was made at Ceramatec in seal development and conductivity measurements of YIG compositions. A creep test was completed on the porous/dense/porous triilayer. IGT provided a discussion on possible interconnect materials. The following tasks are reported on: cell design analysis, program liaison and test facility preparation, cell component fabrication/development, out-of-cell tests. 9 figs, 2 tabs.
Date:
January 1, 1989
Creator:
Prouse, D.; Elangovan, S.; Khandkar, A. (Ceramatec, Inc., Salt Lake City, UT (United States)); Donelson, R. & Marianowski, L. (Institute of Gas Technology, Chicago, IL (United States))
System:
The UNT Digital Library
Advanced Researech and Technology Development fossil energy materials program: Semiannual progress report for the period ending September 30, 1988
The objective of the ARandTD Fossil Energy Materials Program is to conduct research and development on materials for fossil energy applications with a focus on the longer-term and generic needs of the various fossil fuel technologies. The program includes research aimed toward a better understanding of materials behavior in fossil energy environments and the development of new materials capable of substantial enhancement of plant operations and reliability. The ORNL Fossil Energy Materials Program Office compiles and issues this combined semiannual progress report from camera-ready copies submitted by each of the participating subcontractor organizations. This report of activities on the program is organized in accordance with a work breakdown structure in which projects are organized according to materials research thrust areas. These areas are (1) Structural Ceramics, (2) Alloy Development and Mechanical Properties, (3) Corrosion and Erosion of Alloys, and (4) Assessments and Technology Transfer. Individual projects are processed separately for the data bases.
Date:
January 1, 1989
Creator:
unknown
System:
The UNT Digital Library
Advanced water-cooled phosphoric acid fuel cell development
Fabrication of repeat parts for small area short stack is underway: 100 electrode substrates and 150 ERP substrates were graphitized, and 30 electrode substrates were run through each manufacturing step. Teflon content and compaction pressure of shop-made electrodes for the small area short stack was optimized based on single cell tests. A single cell with GSB-18P catalyst and 1 mg/cm[sup 2] loading is performing very well; performance is 0.66 V per cell after 1200 h at 300 ASF. 3 integral separator plate configurations have been selected for verification in the upcoming short stack. Bubble pressures over 7 psid have been demonstrated in filler bands applied with a production curtain and coating process. 5 full-size (small area) coolers were molded, and encapsulation development for molded and commercial graphite coolers continued.
Date:
January 1, 1989
Creator:
unknown
System:
The UNT Digital Library
Advanced Water-Cooled Phosphoric Acid Fuel Cell Development
Electrode substrate handsheets were formed. A new electrode edge seal with in-plane bubble pressures 40--50 psid and through-plane pressures 8--9 psid was demonstrated. A new polymeric edge seal for ERP's with bubble pressure greater than 30 psid was tested and shown to be stable after 5 thermal cycles. A thin (1.2 mil) natrix was applied to full-size electrodes using a curtain coater. Full-size coolers were fabricated using both molded and commercial graphite holders.
Date:
January 1, 1989
Creator:
unknown
System:
The UNT Digital Library
Advanced water-cooled phosphoric acid fuel cell development
150 electrolyte reservoir plates (ERP's) were carbonized for the small area short stack. A process was developed which allows thin (1--2 mil) matrix to be applied to full-size electrodes using a curtain coater. Full-size cooler samples were molded with and without cooler tube arrays. Two alternative cooler hoses were evaluated and found to be acceptable based on 1400 h testing at simulated conditions.
Date:
January 1, 1989
Creator:
unknown
System:
The UNT Digital Library
Aerial Radiometric and Magnetic Survey: Eastville/Norfolk National Topographic Map, North Carolina/Virginia/Maryland
From abstract: "The results of analyses of the airborne gamma radiation and total magnetic field survey flown for the region identified as the Eastville/Norfolk National Topographic Maps, numbered NJ18-10 for Norfolk and NJ18-8,11 for Eastville, are presented in this report."
Date:
1989
Creator:
Geodata International
System:
The UNT Digital Library
Aids in Texas: Facing the Crisis
Report on the Legislative Task Force on AIDS, including legal issues, research efforts, and treatment services.
Date:
January 1989
Creator:
Texas. Legislature. Legislative Task Force on AIDS.
System:
The Portal to Texas History
Alkali/TX[sub 2] catalysts for CO/H[sub 2] conversion to C[sub 1]-C[sub 4] alcohols
Ruthenium disulfide catalysts have been synthesized, tested, and characterized during this period of research. It was observed that both the undoped and Cs-doped RuS[sub 2] catalysts produced alcohols and lower amounts of hydrocarbons from H[sub 2]/CO = 1.0 synthesis gas at temperatures above 300[degree]C. Calcination and catalytic testing resulted in partial reduction of the RuS[sub 2] to Ru[sup o]. Calcination under H[sub 2]S prevented the partial reduction of the RuS[sub 2] catalyst, but subsequent catalytic testing again resulted in the formation of a quantity of Ru[sup o]. A Cs-doped RuS[sub 2] catalyst was prepared, but it might have had too high of a loading of Cs. Upon testing, a lower activity was observed for the doped catalyst compared with the undoped catalyst, but the alcohol selectivity was the same for the two catalysts.
Date:
January 1, 1989
Creator:
Klier, Kamil; Herman, Richard G.; Bastian, Roy D. & Flanagan, Kelly L.
System:
The UNT Digital Library
ALT-II progress report and proposal, December 1989--December 1990
The Advanced Limiter Test (ALT-11) is a joint international program among the United States, the Federal Republic of Germany, and Japan to investigate the performance of a toroidal belt pump limiter in a tokamak, to investigate the behavior of the plasma edge, and to relate edge behavior to overall core energy and particle confinement. The experiments are carried out in the TEXTOR tokamak at KFA Juelich, Federal Republic of Germany. The ALT-II experiment was installed in TEXTOR in 1987 with the objectives of optimizing plasma performance in a limiter tokamak, and of studying the physics of particle removal, density and impurity control, and confinement enhancement by a toroidal belt pump limiter. The ALT-II program addresses large area limiter tokamak operation issues by providing a program specifically directed toward plasma optimization and particle and impurity control by a toroidal belt limiter in a machine dedicated to the investigation of plasma-wall interactions. TEXTOR features the most advanced set of edge plasma diagnostics of any tokamak for the task of diagnosing and understanding the impact of the limiter on the plasma confinement and performance. With the addition of 3.4 MW of neutral beam injection heating (NBI) to the existing 4 MW of ion …
Date:
January 1, 1989
Creator:
unknown
System:
The UNT Digital Library
Analysis of general circulation model results and comparison with regional climatic data, Task 3
On time scales of greater than one year the variability of weather and climate on a large path of the Earth is dominated by the Southern Oscillation. While current theories of this phenomenon have clarified the role of the interaction between the ocean and the atmosphere in maintaining this oscillation it has so far been unclear whether the Southern Oscillation originates in the ocean, in the atmosphere or during the interaction between the ocean and the atmosphere. In this study we compared simulations of climate in two global circulation models: the coupled OSU GCM in which the atmosphere and ocean interact dynamically and the slab OSU GCM in which the ocean is represented by a static layer.
Date:
January 1, 1989
Creator:
Cess, R.D. & Hameed, S.
System:
The UNT Digital Library
Analysis of Structural Changes in the Texas Housing Market
A report of the structural changes in the Texas housing market during the 1970s and 1980s and how it has been affected by factors of time, season, and location.
Date:
January 1989
Creator:
Wright, Arthur L. & Gilliland, Charles E.
System:
The Portal to Texas History
An analytic treatment for a model of superclustering in the universe
Recently, Weinberg, Ostriker, and Dekel (WOD) have proposed a model of many spherical explosions which reproduces the large scale structure of the universe quite well. Because of the success of the model, we have developed an analytic treatment which gives the cluster-cluster correlation function and the cluster mass distribution in terms of the distribution of radii of the spherical voids. We also derive an expression for the distribution in terms of the cluster mass distribution. Thus, the cluster-cluster correlation function is given in terms of the cluster mass distribution function. The numerical results of WOD agree quite well with the predictions from the observed mass distribution. We give the cluster-cluster correlation function for several model distributions of radii. This formulation should be useful for future comparisons of observation and the model of WOD. 4 refs., 5 figs.
Date:
January 1, 1989
Creator:
Kulsrud, R.M. & Cowley, S.C.
System:
The UNT Digital Library
Angular distribution for /sup 56/Fe(. pi. /sup +/,. pi. /sup /minus//)/sup 56/Ni(DIAS)
We have measured a (..pi../sup +/,..pi../sup /minus//) angular distribution for the transition to the double isobaric analog state of a T = 2 target nucleus, /sup 56/Fe, at T/sub ..pi../ = 180 MeV. The data are compared to measurements on T = 1 targets and to theoretical predictions. The angular dependence is different from that observed in measurements on T = 1 targets. Some features of the data are reproduced by the theoretical predictions, but significant discrepancies remain. 15 refs., 3 figs., 1 tab.
Date:
January 1, 1989
Creator:
Seidl, P. A.; Rai, G.; Gilman, R.; Morris, C. L.; Burleson, G. R.; Dhuga, Kalvir S. et al.
System:
The UNT Digital Library
Anisotropic yielding of rocks at high temperatures and pressures: Technical progress report No. 2, 16 December 1987--15 December 1988
Progress has been made towards the quantitative determination of anisotropic yield criteria for several foliated and lineated rocks, towards developing models for their mechanical properties based upon interactions between deformation mechanisms and preexisting fabric elements, and towards the characterization of fabrics resulting from diapiric emplacement of magma bodies within shallow portion of the earth's crust. The suite of extension and compression experiments on Four-mile gneiss is nearly complete. Samples cored along six different orientations have been tested at temperatures ranging from 25/degree/ to 800/degree/C and confining pressures of 0 to 400 MPa at a strain rate of 10/sup /minus/5//s, and we are currently investigating the influence of strain rate on yield strength over the range 10/sup /minus/4/less than or equal to/dot /var epsilon//less than or equal to10/sup /minus/6//s. We have examined deformation microstructures of deformed gneiss samples and identified those processes at the grain scale which are associated with its inelastic response. The orthorhombic anisotropy of fracture strength exhibited by the gneiss may be explained by a simple model involving localized slip within micas and microcracking within the stronger, surrounding framework silicates. Micas appear to interact in much the same way as do Mode II shear cracks, and their density, …
Date:
January 1, 1989
Creator:
Kronenberg, A. K.; Russell, J. E.; Carter, N. L.; Handin, C. J.; Gottschalk, R. R. & Shea, W. T.
System:
The UNT Digital Library
Annex 2: Reservoir characterization and enhanced oil recovery research
The objective of this project is to increase our understanding of EOR processes as they relate to realistic reservoir settings for increased efficiencies and decreased risks in known reservoirs in the State of Texas. The primary activities of the Project will include: (1) systematic reservoir characterizations, (2) modeling and scaleup of chemical flooding techniques, and (3) gaining a broader understanding and providing fundamental information on CO{sub 2}-surfactant phase behavior. Progress is discussed. 11 refs., 3 figs., 1 tab.
Date:
January 1, 1989
Creator:
Pope, G. A.; Lake, L. W. & Schechter, R. S.
System:
The UNT Digital Library
Applications of computer modeling to fusion research
Progress achieved during this report period is presented on the following topics: Development and application of gyrokinetic particle codes to tokamak transport, development of techniques to take advantage of parallel computers; model dynamo and bootstrap current drive; and in general maintain our broad-based program in basic plasma physics and computer modeling.
Date:
January 1, 1989
Creator:
Dawson, J. M.
System:
The UNT Digital Library
Arctic hydrology and meteorology
To date, five years of hydrologic and meteorologic data have been collected at Imnavait Creek near Toolik Lake, Alaska. This is the most complete set of field data of this type collected in the Arctic of North America. These data have been used in process-oriented research to increase our understanding of atmosphere/hydrosphere/biosphere/lithosphere interactions. Basically, we are monitoring heat and mass transfer between various spheres to quantify rates. These could be rates of mass movement such as hillslope flow or rates of heat transfer for active layer thawing or combined heat and mass processes such as evapotranspiration. We have utilized a conceptual model to predict hydrologic processes. To test the success of this model, we are comparing our predicted rates of runoff and snowmelt to measured valves. We have also used a surface energy model to simulate active layer temperatures. The final step in this modeling effort to date was to predict what impact climatic warming would have on active layer thicknesses and how this will influence the hydrology of our research watershed by examining several streambeds.
Date:
January 1, 1989
Creator:
Kane, D.L.
System:
The UNT Digital Library
Argonne National Laboratory High Energy Physics Division semiannual report of research activities, January 1, 1989--June 30, 1989
This paper discuss the following areas on High Energy Physics at Argonne National Laboratory: experimental program; theory program; experimental facilities research; accelerator research and development; and SSC detector research and development.
Date:
January 1, 1989
Creator:
unknown
System:
The UNT Digital Library
Argonne National Laboratory, High Energy Physics Division, semiannual report of research activities, July 1, 1989--December 31, 1989
This report discusses research being conducted at the Argonne National Laboratory in the following areas: Experimental High Energy Physics; Theoretical High Energy Physics; Experimental Facilities Research; Accelerator Research and Development; and SSC Detector Research and Development.
Date:
January 1, 1989
Creator:
unknown
System:
The UNT Digital Library
Aromatic hydrocarbons associated with brines from geopressured wells
The measurement of basic physical chemical properties of the brine components produced in the US DOE geopressured wells it necessary to provide the fundamental data necessary for an understanding of the mechanisms by which constituents of petroleum migrate and are partitioned into different phases in various geologic strata. The cryocondensate materials, which we sample, are present in the geopressured brines of all the wells observed to date. These materials are a complex mixture of aromatic compounds ranging in complexity from benzene to alkyl substituted anthracenes. This progress report includes articles published in the open literature from the data and findings of this project. Topics include the solubility and thermodynamic distribution coefficients. To accomplish these measurements of solubility and distribution coefficients, new techniques and new equipment were developed and were also published as journal articles.
Date:
January 1, 1989
Creator:
Keeley, D. F. & Meriwether, J. R.
System:
The UNT Digital Library
Aromatics oxidation and soot formation in flames
Work during this contract period has been concerned with the mechanisms through which aromatics are formed and destroyed in flames, and the processes responsible for soot formation. Recent progress has been primarily in two areas: experiments and modeling of the soot nucleation process in low pressure benzene flames and preparation for experiments on the destruction mechanisms of benzene. In addition, we have incorporated weak collision'' formalisms into a fall-off computer code.
Date:
January 1, 1989
Creator:
Howard, J. B.
System:
The UNT Digital Library
Assessing Contractor Use in Superfund: a background paper of OTA's assessment on Superfund implementation
This report addresses five key questions; to what extent is superfund dependent on contractors? Why depend on contracting to such a great extent? Is the extent of superfund’s dependence on contracting appropriate? Does the extent of superfund’s dependence on contracting reduce environmental effectiveness? Is superfund’s heavy dependence on contracting cost effective?
Date:
January 1989
Creator:
United States. Congress. Office of Technology Assessment.
System:
The UNT Digital Library