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Office of Scientific & Technical Information Technical Reports
2,042
Texas Attorney General Opinions
215
Technical Report Archive and Image Library
136
Congressional Research Service Reports
118
Texas State Publications
77
Texas Register
35
Advisory Commission on Intergovernmental Relations
7
Office of Technology Assessment
6
Government Comics
2
Serial/Series Title
GJBX
62
Atomic Energy Commission Reports
41
Texas Register
35
United States Department of Energy Grand Junction Office Reports
32
Argonne National Laboratory Reports
21
U.S. Waterways Experiment Station Reports
16
United States Geological Survey Reports
16
Water Resources Investigations Reports
16
Powder River R&D Project
11
Texas Parks & Wildlife
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Fundamental theory of elastic wave scattering by defects in elastic materials: integral equation methods for application to ultrasonic flaw detection
The use of ultrasonic methods in nondestructive testing depends on the interpretation of the scattering of sound waves by flaws. The theory of elastic waves and their scattering in non-uniform media is developed in detail from first principles, and in generality. Both integral equation and differential methods are discussed, with emphasis on the former. General methods for defining scattering cross sections are presented, and conservation theorems are noted. The Born Approximation to the integral equation is presented, and computed results for several experimental situations are discussed. Several corrections to papers in the literature are made, and in particular the exact scattering of a transverse wave by a spherical flaw is compared with the Rayleigh (long wave) limit.
Date:
May 1, 1976
Creator:
Gubernatis, J.E.; Domany, E.; Krumhansl, J.A. & Huberman, M.
Object Type:
Report
System:
The UNT Digital Library
Investigation of induced unimolecular decomposition for development of visible chemical lasers. Final report, 1 May 1976--30 April 1977
This report summarizes the results of a study of azide decomposition for possible application in a visible chemical laser. Task 1 of the subject contract involved thorough review of the chemical literature pertaining to azide decomposition. Covalently bonded azides decompose directly into an electronically excited nitrene (RN) and ground-state molecular nitrogen. Ionic azides decompose to metal atoms and azide radicals. The azide radicals subsequently recombine to form electronically excited nitrogen molecules. Task 2, the experimental phase of this program, involved the study of azide-radical reactions. A flow reactor was built in which large concentrations (up to 10/sup 13/ molec cm/sup -3/) of N/sub 3/ could be produced from the thermal decomposition of NaN/sub 3/. The kinetics of and chemiluminescent products from several reactions of N/sub 3/ have been studied, and a method for obtaining absolute concentrations of N/sub 3/ is described. The potential utility of azide decomposition for the production of excited electronic states suitable for a laser device and further areas of research germane to this goal are discussed briefly.
Date:
May 1, 1977
Creator:
Piper, L G & Taylor, R L
Object Type:
Report
System:
The UNT Digital Library
Solar Pilot Plant, Phase I. Preliminary design report. Volume II. System description and system analysis. CDRL item 2
Honeywell conducted a parametric analysis of the 10-MW(e) solar pilot plant requirements and expected performance and established an optimum system design. The main analytical simulation tools were the optical (ray trace) and the dynamic simulation models. These are described in detail in Books 2 and 3 of this volume under separate cover. In making design decisions, available performance and cost data were used to provide a design reflecting the overall requirements and economics of a commercial-scale plant. This volume contains a description of this analysis/design process and resultant system/subsystem design and performance.
Date:
May 1, 1977
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Radio-frequency size effect and the Fermi surface of aluminum
None
Date:
May 1, 1975
Creator:
Hartman, J.S.
Object Type:
Report
System:
The UNT Digital Library
Human Factors in Design. [Relation of Equipment Design and Human Operations to Safety]
None
Date:
May 1, 1975
Creator:
Nertney, R. J.
Object Type:
Report
System:
The UNT Digital Library
Atomic fluorescence using a tunable flashlamp pumped dye laser. [Analytical calibration curves for atomic fluorescence of Na vapor]
None
Date:
May 1, 1975
Creator:
Brod, H.L.
Object Type:
Report
System:
The UNT Digital Library
Equilibrium water vapor pressure over adhesives and epoxies
None
Date:
May 19, 1975
Creator:
Colmenares, C. & McDavid, L.
Object Type:
Article
System:
The UNT Digital Library
Feasibility demonstration of the Sperry down-well pumping system. Final report
Advantages of down-well pumping (vs. free-flowing) of geothermal hot-water wells are presented, and criteria for such a system are discussed. The main body of the report is presented under the following section headings: the Sperry down-well pumping system; field test program; field operations; test results; and, conclusions and recommendations. The appendix includes a summary of boiler heat transfer and pressure drop calculations. (JGB)
Date:
May 1, 1977
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Development and evaluation of die and container materials. Final report
Specific compositions of high purity silicon aluminum oxynitride (Sialon) and silicon beryllium oxynitride (Sibeon) solid solutions are shown to be promising refractory materials for handling and manipulating solar grade silicon into silicon ribbon. Well controlled processing schedules were developed for fabricating high purity Sialon and Sibeon materials. Essentially the impurity content of the hot pressed ceramics was due only to impurities from the original starting powders. A ceramic shaping die was successfully formed by diamond machining of a hot pressed blank. Projected manufacturing cost estimate for 10/sup 5/ dies per year is $5.4 per die. Evaluation of the interaction of these materials in contact with molten silicon indicates that solid solutions based upon ..beta..-Si/sub 3/N/sub 4/ are more stable than those based on Si/sub 2/N/sub 2/O. Sibeon is more resistant to molten silicon attack than Sialon, and both materials should preferably be used in an inert atmosphere rather than under vacuum conditions. This is because removal of oxygen from the silicon melt as SiO enhances the dissolution of aluminum and beryllium. The wetting angles of these materials are low enough (37/sup 0/ for x = 0.75 ..beta..' Sialon and 49/sup 0/ for x = 0.35 Sibeon) for these materials to …
Date:
May 1, 1979
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Solar Pilot Plant, Phase I. Preliminary design report. Volume II, Book 2. Central receiver optical model users manual. CDRL item 2. [HELIAKI code]
HELIAKI is a FORTRAN computer program which simulates the optical/thermal performance of a central receiver solar thermal power plant for the dynamic conversion of solar-generated heat to electricity. The solar power plant which this program simulates consists of a field of individual sun tracking mirror units, or heliostats, redirecting sunlight into a cavity, called the receiver, mounted atop a tower. The program calculates the power retained by that cavity receiver at any point in time or the energy into the receiver over a year's time using a Monte Carlo ray trace technique to solve the multiple integral equations. An artist's concept of this plant is shown.
Date:
May 1, 1977
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
National Health Insurance Proposals and Their Alternatives
This report discusses legislative proposals for a national heath insurance system and alternatives to a national health insurance plan.
Date:
May 5, 1970
Creator:
Cavalier, Kathleen
Object Type:
Report
System:
The UNT Digital Library
Environmental Affairs in the 91st Congress, 1st Session
This report discusses the growth of environmental policy and provides a listing of introduced legislation related to the environment in the 1st Session of the 91st Congress.
Date:
May 16, 1970
Creator:
Congressional Research Service. Environmental Policy Division
Object Type:
Report
System:
The UNT Digital Library
Digest of Selected Agricultural Legislation: 91st Congress
This report provides a listing of legislation introduced in the 91st Congress related to agriculture.
Date:
May 5, 1970
Creator:
Sherman, Harvey R.
Object Type:
Report
System:
The UNT Digital Library
The Seniority System: Pros, Cons, and Suggested Reforms
This report discusses the seniority system in Congress used to select committee chairman and efforts to reform the system.
Date:
May 27, 1970
Creator:
Oleszek, Walter J.
Object Type:
Report
System:
The UNT Digital Library
Do-It-Yourself Ecology
This report deals with how to develop a good environment.
Date:
May 25, 1970
Creator:
Environmental Action Inc.
Object Type:
Report
System:
The UNT Digital Library
The Nixon Doctrine for Asia
This report provides an overview of the Nixon Doctrine for Asia (written in July 1969) and a discussion of its policies regarding communism in Asia and the Vietnam War.
Date:
May 11, 1970
Creator:
Niksch, Larry A.
Object Type:
Report
System:
The UNT Digital Library
Developments in Cambodia Following the March 18 Coup
This report discusses the March 18, 1970 coup in Cambodia by General Lon Nol which overthrew the government of Prince Norodom Sihanouk and subsequent fighting in Cambodia between Communist North Vietnamese troops and South Vietnamese troops which led to American intervention in the form of an attack on North Vietnamese bases in Cambodia in April and May of 1970.
Date:
May 11, 1970
Creator:
Niksch, Larry A.
Object Type:
Report
System:
The UNT Digital Library
Federal Financial Support for the Construction of Nursing Homes
This report discusses four federal programs which provide funds for the construction of nursing homes and their various provisions for funding.
Date:
May 11, 1970
Creator:
Kline, Janet
Object Type:
Report
System:
The UNT Digital Library
Election Laws of the Fifty States and the District of Columbia: A Compilation of Digests of Principal Statutory Provisions with Introductory Summary
This report provides a listing of the major election laws in each state and the District of Columbia organized alphabetically.
Date:
May 1970
Creator:
Yadlosky, Elizabeth; Thornton, Robert L. & Glass, Stuart E.
Object Type:
Report
System:
The UNT Digital Library
The National Commitments Resolution of 1969: Background and Issues
This report discusses the National Commitments Act of 1969 which defined what a national commitment was and that they could only be undertaken with legislative consent not just a Presidential order. It was passed by the Senate in 1969. The legislative history of the bill is outlined in this report.
Date:
May 11, 1970
Creator:
Collier, Ellen C.
Object Type:
Report
System:
The UNT Digital Library
Environmental Pollution: Legislation and Programs in the Areas of Water and Air Pollution and Solid Waste Management
This report discusses past and current legislation related to air and water pollution as well as solid waste management.
Date:
May 22, 1970
Creator:
Wellman, John Douglas
Object Type:
Report
System:
The UNT Digital Library
Diffusion estimation for small emissions. Preliminary report
A simplified approach is presented to the calculation of ground level concentrations of effluents from small industrial and fuel burning installations. It is intended to serve as a first approximation to a very complex process. Because each stack, building, and terrain configuration is different, actual ground concentrations may frequently differ from the values calculated here by a factor of two. Nonetheless, this procedure should be useful for determining whether ambient air quality standards are likely to be met, exceeded, or only marginally obtained. It also predicts the locations where the highest and most frequent ground concentrations are likely. Sampling at several such locations is very advisable, unless the predicted concentrations are quite low. In addition, consultation with a specialist in air pollution meteorology may be desirable, especially in marginal or unique situations. The procedures given here were designed especially for source heights of less than 100 m; some of the simplifications made are not valid for large emissions. In the few cases where more than arithmetic formulas are necessary, simple nomograms are provided.
Date:
May 1, 1973
Creator:
Briggs, G.A.
Object Type:
Report
System:
The UNT Digital Library
Modeling geothermal systems. [Lumped-parameter and distributed parameter models]
None
Date:
May 1, 1975
Creator:
Witherspoon, P. A.; Neuman, S. P.; Sorey, M. L. & Lippmann, M. J.
Object Type:
Article
System:
The UNT Digital Library
Well-logging technology and geothermal applications: a survey and assessment with recommendations
None
Date:
May 1, 1975
Creator:
Baker, L. E.; Campbell, A. B. & Hughen, R. L.
Object Type:
Report
System:
The UNT Digital Library