Collection
Office of Scientific & Technical Information Technical Reports
70,209
Congressional Research Service Reports
23,951
United States Census Map Collection
16,708
Defense Base Closure and Realignment Commission
12,745
Government Accountability Office Reports
9,379
Texas Laws and Resolutions Archive
6,806
Texas State Publications
3,492
Texas Attorney General Opinions
1,281
Texas State Auditor's Office: Reports
691
End of Term Publications
615
23 More
Serial/Series Title
2005 BRAC Commission
12,745
2000 Census County Subdivision Block Map
9,238
2000 Census County Block Map
7,163
House Bills
2,963
Senate Bills
2,184
CRS Issue Briefs
2,170
78th Legislature of Texas
1,771
81st Legislature of Texas
1,763
80th Legislature of Texas
1,737
79th Legislature of Texas
1,667
812 More
Country
States
Decade
Year
Month
147,374 Matching Results
Results open in a new window/tab.
Stephen Creek Quadrangle
Topographic map of a portion of Texas from the United States Geological Survey (USGS) project. The map includes towns, historic or notable sites, bodies of water, and other geologic features. Scale 1:24000
Date:
2000
Creator:
United States. Forest Service.
Object Type:
Map
System:
The Portal to Texas History
STM Survey of As/Ge(mnn) and P/Ge(mnn) Surfaces
This paper contains a few representative results of a scanning tunneling microscope (STM) survey of Ge surfaces after exposure to arsenic and phosphorous.
Date:
January 1, 2000
Creator:
McMahon, W. E. & Olson, J. M.
Object Type:
Article
System:
The UNT Digital Library
The Story of Consumer Credit
Three young basketball fans discuss the benefits and dangers of credit use, why interest rates on different types of loans differ, how to establish a credit history, and the rights of users of consumer credit.
Date:
2000
Creator:
Federal Reserve Bank of New York. Public Information Department.
Object Type:
Pamphlet
System:
The UNT Digital Library
Structural Ordering and its Correlation to the Optoelectronic Properties of a-Si:H Films
Magnetic susceptibility was suggested theoretically to be sensitive to the overall structural order of a-Si:H and is measured precisely for various a-Si:H thin films using a new technique.
Date:
January 1, 2000
Creator:
Baugh, J.; Han, D.; Kleinhammes, A.; Wang, Q. & Wu, Y.
Object Type:
Article
System:
The UNT Digital Library
Structural Studies of Potential 1 eV Solar Cell Materials
Structural studies using transmission electron microscopy have been made on 1-eV band-gap materials, lattice-matched to GaAs and Ge substrates, grown by metal-organic vapor-phase epitaxy for use in multijunction, high-efficiency solar cells.
Date:
January 1, 2000
Creator:
Norman, A.; Al-Jassim, M.; Friedman, D.; Geisz, J.; Olson, J. & Kurtz, S.
Object Type:
Article
System:
The UNT Digital Library
Structure and Effects of Extended Defects in Polycrystalline Si Thin Films
The structure and effects of extended defects in rapid deposited polycrystalline Si thin films were studied using a combination of high-resolution transmission electron microscopy and first-principles total energy calculations.
Date:
January 1, 2000
Creator:
Yan, Y.; Al-Jassim, M. M.; Wang, T. H. & Ciszek, T. F.
Object Type:
Article
System:
The UNT Digital Library
Study of soluble scale fouling control in high solids black liquor concentrators. Progress report, quarter 5 (October 1, 1999 - December 31, 1999)
During this quarter, work has finally resumed on the black liquor solubility experiments, but no new data have been generated. The crystallization experiments with inorganic model solutions have been completed, and crystallization experiments with kraft black liquor have been started. The Annular Test Cell apparatus is now fully operational, while construction of the falling film evaporator pilot plant is nearly complete. Startup of this unit is planned for late in Quarter 6. In the CFD model development work, the relaxation of simplifying assumptions in the falling film model have been completed, and expressions were developed to estimate film velocity/film Reynolds number relations. Also, thin film data taken for a range of conventional fluids were compared to predictions using selected methods, and attempts were initiated to extrapolate to approximate black liquor evaporator conditions.
Date:
January 1, 2000
Creator:
Frederick, W. J.; Chen, F.; Hsieh, G.; Lien, S.; Murphy, R. W.; Rousseau, R. W. et al.
Object Type:
Report
System:
The UNT Digital Library
STUDY OF SOLVENT AND CATALYST INTERACTIONS IN DIRECT COAL LIQUEFACTION
Using a reactor in which the coal is physically separated from the solid catalyst by a porous wall permeable to the hydrogen donor solvent, it was shown that direct contact between the catalyst and the coal is not required for catalyzed coal liquefaction. This occurs however only when there is a hydrogen atmosphere, as liquefaction with catalyst participation does not occur in a nitrogen atmosphere. Liquefaction by hydrogen transfer from the donor solvent itself does occur. This suggests that there is transfer of hydrogen from the catalyst to the coal via the solvent. The character of the solvent makes a significant difference, the better solvents being good hydrogen donors. These results indicate that the role of the catalyst may be to regenerate the spent hydrogen donor solvent during the liquefaction process. The peak temperature for volatiles evolution has been shown to be a reproducible measure of the coal rank. This was shown by an excellent correlation (R2 = 0.998) between peak volatiles temperatures (by TGA) and vitrinite reflectance. Using TG/MS, the volatiles contents of coals of a wide range of ranks was determined. The low rank coals emit largely phenols and some other oxygen compounds and olefins. The higher rank …
Date:
January 1, 2000
Creator:
Klein, Michael T.
Object Type:
Report
System:
The UNT Digital Library
STUDY OF SOLVENT AND CATALYST INTERACTIONS IN DIRECT COAL LIQUEFACTION
There are several aspects of the Direct Coal Liquefaction process which are not fully understood and which if better understood might lead to improved yields and conversions. Among these questions are the roles of the catalyst and the solvent. While the solvent is known to act by transfer of hydrogen atoms to the free radicals formed by thermal breakdown of the coal in an uncatalyzed system, in the presence of a solid catalyst as is now currently practiced, the yields and conversions are higher than in an uncatalyzed system. The role of the catalyst in this case is not completely understood. DOE has funded many projects to produce ultrafine and more active catalysts in the expectation that better contact between catalyst and coal might result. This approach has met with limited success probably because mass transfer between two solids in a fluid medium i.e. the catalyst and the coal, is very poor. It is to develop an understanding of the role of the catalyst and solvent in Direct Liquefaction that this project was initiated. Specifically it was of interest to know whether direct contact between the coal and the catalyst was important. By separating the solid catalyst in a stainless …
Date:
January 1, 2000
Creator:
Klein, Michael T.
Object Type:
Report
System:
The UNT Digital Library
Study of the final state J/Psi pi+- in charmonium decays
None
Date:
January 1, 2000
Creator:
Cibinetto, Gianluigi & U., /Ferrara
Object Type:
Report
System:
The UNT Digital Library
Summer Roost Tree Selection by Eastern Red, Seminole, and Evening Bats in the Upper Coastal Plain of South Carolina
Radiotraction of six eastern red bats, six seminole bats and twenty-four evening bats to 55, 61, and 65 day roosts during 1996 to 1997 in the Upper Coastal Plain of South Carolina. For each species, testing was done for differences between used roost trees and randomly located trees. Also tested for differences between habitat characteristics surrounding roost trees and randomly located trees. Eastern Red and Seminole bats generally roosted in canopies of hardwood and pine while clinging to foilage and small branches. Evening bats roosted in cavities or under exfoliating bark in pines and dead snags. Forest management strategies named within the study should be beneficial for providing roosts in the Upper Coastal Plain of South Carolina.
Date:
January 1, 2000
Creator:
Menzel, M.A.; Carter, T.C.; Ford, W.M.; Chapman, B.R. & Ozier, J.
Object Type:
Article
System:
The UNT Digital Library
Sunset Commission Staff Report: State Commission on Judicial Conduct
Report from the Sunset Advisory Commission regarding the Texas Commission on Judicial Conduct, including an overview of the agency, recommendations, and issues for further review.
Date:
2000
Creator:
Mogil, Lisa; Wissolik, Erica; Hunley, Barbara & McKay, Ginny
Object Type:
Report
System:
The Portal to Texas History
Sunset Commission Staff Report: Texas Natural Resource Conservation Commission
Report from the Sunset Advisory Commission regarding the Texas Natural Resource Conservation Commission, including background information, issues and recommendations, and supplementary documentation.
Date:
2000
Creator:
Schmidt, Jay; González, Vanessa; Latta, Karen; Levin, Ilan; Luera, Michelle; Ninaud, Christian et al.
Object Type:
Report
System:
The Portal to Texas History
Sunset Commission Staff Report: Texas Parks and Wildlife Department
Report from the Sunset Advisory Commission regarding the Texas Parks and Wildlife Department, including background information, issues and recommendations, and supplementary documentation.
Date:
2000
Creator:
Hopson, Steve; Morris, Robert; Wissolik, Erica; Whitten, Meredith; Kinney, Susan & Levine, Ken
Object Type:
Report
System:
The Portal to Texas History
SUPPORTED LIQUID CATALYSTS FOR REMOVAL OF HIGH TEMPERATURE FUEL CELL CONTAMINANTS
A novel catalytic synthesis gas oxidation process using molten carbonate salts supported on compatible fluidized iron oxide particles (supported-liquid-phase-catalyst (SLPC) fluidized bed process) was investigated. This process combines the advantages of large scale fluidized bed processing with molten salt bath oxidation. Molten salt catalysts can be supported within porous fluidized particles in order to improve mass transfer rates between the liquid catalysts and the reactant gases. Synthesis gas can be oxidized at reduced temperatures resulting in low NO{sub x} formation while trace sulfides and halides are captured in-situ. Hence, catalytic oxidation of synthesis gas can be carried out simultaneously with hot gas cleanup. Such SLPC fluidized bed processes are affected by inter-particle liquid capillary forces that may lead to agglomeration and de-fluidization of the bed. An understanding of the origin and strength of these forces is needed so that they can be overcome in practice. Process design is based on thermodynamic free energy minimization calculations that indicate the suitability of eutectic Na{sub 2}CO{sub 3}/K{sub 2}CO{sub 3} mixtures for capturing trace impurities in-situ (< 1 ppm SO{sub x} released) while minimizing the formation of NO{sub x}(< 10 ppm). Iron oxide has been identified as a preferred support material since it is …
Date:
January 1, 2000
Creator:
Weimer, Alan W.; Czerpak, Peter & Hilbert, Patrick
Object Type:
Report
System:
The UNT Digital Library
Synthesis of Band Filters and Equalizers Using Microwav FIR Techniques
It is desired to design a passive bandpass filter with both a linear phase and flat magnitude response within the band and also has steep skirts. Using the properties of both coupled lines and elementary FIR (Finite Impulse Response) signal processing techniques can produce a filter of adequate phase response and magnitude control. The design procedure will first be described and then a sample filter will then be synthesized and results shown.
Date:
January 1, 2000
Creator:
Deibele, C.
Object Type:
Report
System:
The UNT Digital Library
Teacher Preparation STaR Chart: A Self-Assessment Tool for Colleges of Education
Tool designed to help prepare teachers for upcoming educational challenges, with a specific focus on technological proficiency going into the new millennium.
Date:
January 2000
Creator:
CEO Forum on Education & Technology
Object Type:
Pamphlet
System:
The Portal to Texas History
Technical progress report: Peripheral mower blade. Sixth quarter report ending 12/31/99
Machine Tech Inc. has been assisting the author with the development of the peripheral mower blade decks. Machine Tech Inc. is still developing the batwing mower deck, which was started last fall after the completion of the mounted deck. The completion date of this program is slated for February. The wing covers and the center section of the batwing have been completed, the frame and drive-lines are now under development. Information from the nineteen-foot bat-wing deck prototype that they have been testing is now being used in the development of a more acceptable bat-wing mower. This unit will be able to maintain the same peripheral mower benefits, but will be much lighter and easier to pull requiring less fuel and damage to highway right of ways in soft areas. The mounted deck has been completed and is in the pilot stage with reports yet to be compiled. Machine Tech Inc. has also worked in an agricultural deck which is closely related to the mounted peripheral mower deck developed for the highway right of way. This will be one more outlet for the peripheral mower machines into the hands of the public.
Date:
January 1, 2000
Creator:
Darden, John A.
Object Type:
Report
System:
The UNT Digital Library
Technology and Risk Sciences Program. FY99 Annual Report
In making the transition from weapons production to environmental restoration, DOE has found that it needs to develop reliable means of defining and understanding health and environmental risks and of selecting cost-efficient environmental management technologies so that cleanup activities can be appropriately directed. Through the Technology and Risk Sciences Project, the Entergy Spatial Analysis Research Laboratory attempts to provide DOE with products that incorporate spatial analysis techniques in the risk assessment, communication, and management processes; design and evaluate methods for evaluating innovative environmental technologies; and collaborate and access technical information on risk assessment methodologies, including multimedia modeling and environmental technologies in Russia and the Ukraine, while in addition training and developing the skills of the next generation of scientists and environmental professionals.
Date:
January 1, 2000
Creator:
Regens, James L.
Object Type:
Report
System:
The UNT Digital Library
Texas Conservation Passport Journal, Volume 9, Number 1, January 2000-March 2000
Newsletter of the Texas Parks & Wildlife Conservation Passport program, discussing news and events, announcements related to the program, and other information of interest to park visitors.
Date:
January 2000
Creator:
Texas. Parks and Wildlife Department.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Texas Construction and Maintenance Report: January 2000
Monthly report documenting contracts for road construction and maintentance in Texas, organized by county and district. It includes information about each project including contractor, dates, costs, and other relevant data.
Date:
January 1, 2000
Creator:
Texas. Department of Transportation. Construction Division.
Object Type:
Report
System:
The Portal to Texas History
Texas Crime Report 1999
Crime statistics in Texas for the year 1999.
Date:
2000
Creator:
Texas. Department of Public Safety.
Object Type:
Book
System:
The UNT Digital Library
Texas EMS Magazine, Volume 21, Number 1, January/February 2000
Bimonthly magazine containing news and information that pertains to Emergency Medical Service (EMS) providers. "The magazine's goals are to help organizations function professionally as EMS providers, to educate individuals so they can perform lifesaving prehospital skills under stressful conditions, and to help the public get into the EMS system when they need it" (p. 4).
Date:
January 2000
Creator:
Texas. Department of State Health Services.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Texas General Services Commission Semi-Annual Report on Historically Underutilized Business (HUB): Fiscal Year 2002
Semi-annual report on expenditures by state agencies to Historically Underutilized Businesses (HUBs) in Texas.
Date:
2000
Creator:
Texas. General Services Commission.
Object Type:
Report
System:
The Portal to Texas History