Collection
Office of Scientific & Technical Information Technical Reports
250
Congressional Research Service Reports
106
Texas Attorney General Opinions
55
Texas Patents
45
Texas Laws and Resolutions Archive
44
Technical Report Archive and Image Library
39
Government Accountability Office Reports
31
National Advisory Committee for Aeronautics Collection
25
TRAIL Microcard Collection
13
Texas Register
11
7 More
States
597 Matching Results
Results open in a new window/tab.
China-U.S. Trade Issues
This report discusses the U.S.-China economic relationship and China's rapid expansion as a global economic market, both with respect to the current global economic crisis. It also examines major U.S.-China trade issues and related legislation.
Date:
May 6, 2011
Creator:
Morrison, Wayne M.
Object Type:
Report
System:
The UNT Digital Library
State and Local Government Series (SLGS) Treasury Debt: A Description
This report explains State and Local Government Series (SLGS), a nonmarketable custom tailored security, and how suspension may impact state and local government issuers.
Date:
May 6, 2011
Creator:
Maguire, Steven
Object Type:
Report
System:
The UNT Digital Library
Independent Confirmatory Survey Summary and Results for the Plum Brook Reactor Facility Sandusky OH
The objectives of the confirmatory survey activities were to provide independent contractor field data reviews and to generate independent radiological data for use by the Nuclear Regulatory Commission (NRC) in evaluating the adequacy and accuracy of the licensee’s procedures and final status survey (FSS) results.
Date:
May 6, 2008
Creator:
Bailey, E.N.
Object Type:
Report
System:
The UNT Digital Library
Photoconductive Detectors with Fast Temporal Response for Laser Produced Plasma Experiments.
Processes during laser plasma experiments typically have time scales that are less than 100 ps. The measurement of these processes requires X-ray detectors with fast temporal resolution. We have measured the temporal responses and linearity of several different X-ray sensitive Photoconductive Detectors (PCDs). The active elements of the detectors investigated include both diamond (natural and synthetic) and GaAs crystals. The typical time responses of the GaAs PCDs are approximately 60 ps, respectively. Some characterizations using X-ray light from a synchrotron light source are presented.
Date:
May 6, 2008
Creator:
May, M; Halvorson, C; Perry, T; Weber, F; Young, P & Silbernagel, C
Object Type:
Article
System:
The UNT Digital Library
Diagnostics for Fast Ignition Science
The concept for Electron Fast Ignition Inertial Confinement Fusion demands sufficient laser energy be transferred from the ignitor pulse to the assembled fuel core via {approx}MeV electrons. We have assembled a suite of diagnostics to characterize such transfer. Recent experiments have simultaneously fielded absolutely calibrated extreme ultraviolet multilayer imagers at 68 and 256eV; spherically bent crystal imagers at 4 and 8keV; multi-keV crystal spectrometers; MeV x-ray bremmstrahlung and electron and proton spectrometers (along the same line of sight); nuclear activation samples and a picosecond optical probe based interferometer. These diagnostics allow careful measurement of energy transport and deposition during and following laser-plasma interactions at extremely high intensities in both planar and conical targets. Augmented with accurate on-shot laser focal spot and pre-pulse characterization, these measurements are yielding new insight into energy coupling and are providing critical data for validating numerical PIC and hybrid PIC simulation codes in an area that is crucial for many applications, particularly fast ignition. Novel aspects of these diagnostics and how they are combined to extract quantitative data on ultra high intensity laser plasma interactions are discussed, together with implications for full-scale fast ignition experiments.
Date:
May 6, 2008
Creator:
MacPhee, A.; Akli, K.; Beg, F.; Chen, C.; Chen, H.; Clarke, R. et al.
Object Type:
Article
System:
The UNT Digital Library
Concentrating Solar Power Forum Concentrating Photovoltaics
This presentation's summaries: a convenient truth, comparison of three concentrator technologies, value of high efficiency, and status of industry.
Date:
May 6, 2008
Creator:
Kurtz, S.
Object Type:
Presentation
System:
The UNT Digital Library
THERMODYNAMIC AND MASS BALANCE ANALYSIS OF EXPANSIVE PHASE PRECIPITATION IN SALTSTONE
This report assesses the potential for future precipitation of expansive phases that could cause fracturing in saltstone. It examines the equilibrium case using The Geochemist's Workbench{reg_sign} reaction path model. The scenarios simulated examine the effects of different possible infiltrating fluids, different saltstone formulations, and different amounts of minerals available for reaction. Mineralogy of the vault cement and saltstone were estimated using reported chemical compositions of each. The infiltrating fluid was assumed to be either rainwater equilibrated with vault cement or rainwater itself. The simulations assumed that minerals were homogeneously distributed in saltstone and that each pore volume of infiltration reached equilibrium with the mineral assemblage. Fracturing that initiates in pores by expansive phase precipitation is unlikely to occur in saltstone because the maximum amount of porosity filled is 34%. If less than 100% of the saltstone minerals are available for reaction, less porosity will be lost to expansive phases. Likewise, the formulation of saltstone used will affect the amount of porosity filled by expansive phases.
Date:
May 6, 2008
Creator:
Denham, M
Object Type:
Report
System:
The UNT Digital Library
Using X-Rays to Test CVD Diamond Detectors for Areal Density Measurement at the National Ignition Facility
At the National Ignition Facility (NIF), 192 laser beams will compress a target containing a mixture of deuterium and tritium (DT) that will release fusion neutrons, photons, and other radiation. Diagnostics are being designed to measure this emitted radiation to infer crucial parameters of an ignition shot. Chemical Vapor Deposited (CVD) diamond is one of the ignition diagnostics that will be used as a neutron time-of-flight detector for measuring primary (14.1 MeV) neutron yield, ion temperature, and plasma areal density. This last quantity is the subject of this study and is inferred from the number of downscattered neutrons arriving late in time, divided by the number of primary neutrons. We determine in this study the accuracy with which this detector can measure areal density, when the limiting factor is detector and electronics saturation. We used laser-produced x-rays to reproduce NIF signals in terms of charge carriers density, time between pulses, and amplitude contrast and found that the effect of the large pulse on the small pulse is at most 8.4%, which is less than the NIF accuracy requirement of {+-} 10%.
Date:
May 6, 2008
Creator:
Dauffy, L S; Koch, J A; Tommasini, R & Izumi, N
Object Type:
Article
System:
The UNT Digital Library
CAR - SEAT CLEANER.
Patent for new and improved car-seat cleaners, including illustrations.
Date:
May 6, 1902
Creator:
Ridd, John A.
Object Type:
Patent
System:
The Portal to Texas History
Aerial Assessment of Aquatic and Riparian Habitat in the Brazos River and Blanco River, Texas
This report's purpose is "to evaluate the use of unmanned aerial vehicle (UVA) to acquire high resolution multispectral aerial imagery from Texas rivers supporting natural resource management objectives" (p. 2).
Date:
May 6, 2012
Creator:
Hardy, Thomas B.; Kollaus, Kristy; Tolman, Kristina; Heard, Thomas & Tennant, James
Object Type:
Report
System:
The Portal to Texas History
Beam storage studies in the Fermilab main ring
Bunched beams of 100 and 150 GeV have been stored in the Fermilab Main Ring for periods of up to one hour. The observations of beam current and beam profiles are analyzed for the effects of gas scattering, chromaticity and non-linear magnetic field.
Date:
May 6, 1982
Creator:
MacLachlan, J.A.
Object Type:
Report
System:
The UNT Digital Library
Carbon tetrachloride contamination, 200 West Area, Hanford Site: Arid Site Integrated Demonstration for remediation of volatile organic compounds
The Arid State Integrated Demonstration is a US Department of Energy (DOE) program targeted at the acquisition, development, demonstration, and deployment of technologies for evaluation and cleanup of volatile organic and associated contaminants in soils and ground waters. Several DOE laboratories, universities, and industry will participate in the program. Candidate technologies will be demonstrated in the areas of site characterization; performance prediction, monitoring, and evaluations; contaminant extraction and ex situ treatment; in situ remediations; and site closure and monitoring. The performance of these demonstrated technologies will be compared to baseline technologies and documented to promote the transfer of new technologies to industry for use at DOE facilities. The initial host site is the Hanford Site's 200 West Area. The location of the demonstration contains primarily carbon tetrachloride (CCl{sub 4}), chloroform, and a variety of associated mixed waste contaminants. Chemical processes used to recover and purify plutonium at Hanford's plutonium finishing plant (Z Plant) resulted in the production of actinide-bearing waste liquid. Both aqueous and organic liquid wastes were generated, and were routinely discharged to subsurface disposal facilities. The primary radionuclide in the waste streams was plutonium, and the primary organic was CCl{sub 4}. This paper contains brief descriptions of the …
Date:
May 6, 1991
Creator:
Last, G.V. (Pacific Northwest Lab., Richland, WA (United States)) & Rohay, V.J. (Westinghouse Hanford Co., Richland, WA (United States))
Object Type:
Report
System:
The UNT Digital Library
Niobium Phase Diagrams : Manuscript Report on Niobium-Carbon System
Abstract: "The niobium-carbon system has been determined by X-ray and metallographic examination of sintered and arc-cast alloys. Two carbides exist: hexagonal Nb2C with a limited range of homogeneity, and cubic NbC with a solubility range from 8.25 to 10.25 weight per cent carbon. Dilute alloys freeze by eutectic reaction at 2230 C. The solubility of carbon in niobium is 0.80 at the eutectic temperature, but this decreases rapidly with temperature. Metallographic evidence indicates a peritectic reaction between melt, Nb2C, and NbC; alloys richer in carbon than NbC freeze by eutectic reaction."
Date:
May 6, 1959
Creator:
Elliott, Rodney P.
Object Type:
Report
System:
The UNT Digital Library
Development of an advanced high efficiency coal combustor for boiler retrofit
During the quarter from October 1986 to January 1987 the following technical progress was made: (1) Initiated a literature study focusing on optimized burner aerodynamics and design methodologies for high efficiency swirl generation devices, (2) Completed design of Swirler Test Facility (STF) to be used for comparative swirler evaluations, and (3) Initiated facility preparation at MIT for thermal atomization studies and high shear viscosity measurements.
Date:
May 6, 1987
Creator:
Rini, M.J.; LaFlesh, R.C. (Combustion Engineering, Inc., Windsor, CT (United States)); Beer, J.M.; Togan, M.A.; Yu, T.U. (Massachusetts Inst. of Tech., Cambridge, MA (United States)) & McGowan, J.G. (Univ. of Massachusetts, MA (United States))
Object Type:
Report
System:
The UNT Digital Library
Surface-water records in Lower Little Creek basin, Lamar and Marion Counties, Mississippi. Technical letter: DRIBBLE-52
Basic surface-water and precipitation data collected from June 1961 through June 1965 at 10 stations in Lower Little Creek basin of Lamar and Marion Counties, Mississippi, are presented. The U.S. Atomic Energy Commission's Tatum dome site of Project Dribble is in Lower Little Creek basin. The data show a 3.80-inch deficiency in precipiation in the Tatum dome are from April 1964 through June 1965 and an 11.72-inch deficiency from June 1961 through June 1965. The mean monthly discharge at Lower Little Creek (4892.40) was less than the median monthly value during 11 of the 15 months from April 1964 through June 1965. Chemical analyses of water samples collected from five streams in the Tatum Dome area indicate that the water is of generally good quality; for example, dissolved-solids content ranged from 16 to 23 parts per million for samples collected during the period from October 31, 1961, through October 23, 1964. 4 figures, 4 tables.
Date:
May 6, 1966
Creator:
Taylor, R.E. & Shattles, D.E.
Object Type:
Report
System:
The UNT Digital Library
Mechanical and thermophysical properties of hot-pressed SYNROC B
The optimal SYNROC compositons for use with commercial waste are reviewed. Large amounts of powder (about 2.5 kg) were prepared by convention al ceramic operations to test the SYNROC concept on a processing scale. Samples, 15.2 cm in diameter, were hot pressed in graphite, and representative samples were cut for microstructural evaluations. Measured mechanical and thermophysical properties did not vary significantly as a function of sample location and were typical of titanate ceramic materials.
Date:
May 6, 1981
Creator:
Hoenig, C. L.; Newkirk, H. W.; Otto, R. A.; Brady, R. L.; Brown, A. E.; Ulrich, A. R. et al.
Object Type:
Report
System:
The UNT Digital Library
Formation and control of plasma potentials in TMX upgrade
The methods to be employed to form and control plasma potentials in the TMX Upgrade tandem mirror with thermal barriers are described. ECRH-generated mirror -confined electron plasmas are used to establish a negative potential region to isolate the end-plug and central-cell celectrons. This thermal isolation will allow a higher end-plug electron temperature and an increased central-cell confining potential. Improved axial central-cell ion confinement results since higher temperature central-cell ions can be confined. This paper describes: (1) calculations of the sensitivity of barrier formation to vacuum conditions and to the presence of impurities in the neutral beams, (2) calculations of microwave penetration and absorption used to design the ECRH system, and (3) techniques to limit electron runaway to high energies by localized microwave beams and by relativistic detuning.
Date:
May 6, 1981
Creator:
Simonen, T.C.; Orzechowski, T.J.; Porkolab, M. & Stallard, B.W.
Object Type:
Article
System:
The UNT Digital Library
Geohydrology of Enewetak Atoll islands and reefs
Extensive tidal studies in island wells and the lagoon at Enewetak Atoll have shown that island ground water dynamics are controlled by a layered aquifer system. The surface aquifer of unconsolidated Holocene material extends to a depth of approximately 15 m, and has a hydraulic conductivity K = 60 m/day. From 15 to 60 m (approximate lagoon depth) the reef structure consists of successive layers of altered Pleistocene materials, with bulk permeability substantially higher than that of the surface aquifer. Because of wave set-up over the windward reef and the limited pass area for outflow at the south end of the atoll, lagoon tides rise in phase with the ocean tides but fall later than the ocean water level. This results in a net lagoon-to-ocean head which can act as the driving force for outflow through the permeable Pleistocene aquifer. This model suggests that fresh water, nutrients or radioactive contaminants found in island ground water or reef interstitial water may be discharged primarily into the ocean rather than the lagoon. Atoll island fresh water resources are controlled by recharge, seawater dilution due to vertical tidal mixing between the surface and deeper aquifers, and by loss due to entrainment by the …
Date:
May 6, 1981
Creator:
Buddemeier, R.W.
Object Type:
Article
System:
The UNT Digital Library
Soil and Water Conservation: An Overview
This report offers the most recent development regarding the soil and water conservation topics and current major conservation activities. The report addresses these conservation topics; what should be the priorities for the conservation effort; and deciding whether any existing programs or activities should be modified or eliminated and whether new programs or activities should be added to the effort.
Date:
May 6, 2008
Creator:
Cowan, Tadlock & Johnson, Renée
Object Type:
Report
System:
The UNT Digital Library
Cotton Chopper, Scraper, and Cultivator
Patent for improvements so that the "choppers may be raised, in order to leave standing such of the growth of the cotton as is necessary, or while turning corners; third, in means hereinafter to be described, by which the depth at which the scrapers and choppers run into the ground maybe adjusted" (lines 16-22).
Date:
May 6, 1890
Creator:
Ellis, David P,
Object Type:
Patent
System:
The Portal to Texas History
81st Texas Legislature, Senate Concurrent Resolutions 41
Concurrent resolution introduced by the Texas Senate and House of Representatives relating to commending the honorees of the 2009 Texas Medal of Arts Awards.
Date:
May 6, 2009
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
81st Texas Legislature, Senate Concurrent Resolutions 62
Concurrent resolution introduced by the Texas Senate and House of Representatives relating to in memory of the Honorable Lena Guerrero of Austin.
Date:
May 6, 2009
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
Texas Register, Volume 36, Number 18, Pages 2793-3060, May 06, 2011
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:
May 6, 2011
Creator:
Texas. Secretary of State.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Texas Register, Volume 19, Number 33, Pages 3385-3521, May 6, 1994
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:
May 6, 1994
Creator:
Texas. Secretary of State.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History