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UNT Libraries Government Documents Department
812
Oklahoma Historical Society
139
UNT Libraries Special Collections
78
Sterling Municipal Library
26
Carl Albert Congressional Research and Studies Center
16
Alvin Community College
13
Rice University Woodson Research Center
10
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10
UNT Libraries
10
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9
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Office of Scientific & Technical Information Technical Reports
635
Texas Digital Newspaper Program
288
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147
Tocker Foundation Grant
140
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77
Congressional Research Service Reports
53
Texas State Publications
31
Altus Times-Democrat
26
The Baytown Sun
26
Chickasha Newspaper Collection
26
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Country
States
Year
Month
The Baytown Sun (Baytown, Tex.), Vol. 77, No. 54, Ed. 1 Friday, January 1, 1999
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
January 1, 1999
Creator:
Dobbs, Gary
Object Type:
Newspaper
System:
The Portal to Texas History
Beyond the adiabatic approximation: The impact of thresholds on the hadronic spectrum
In the adiabatic approximation, most of the effects of quark-antiquark loops on spectroscopy can be absorbed into a static interquark potential. The author develops a formalism which can be used to treat the residual nonadiabatic effects associated with the presence of nearby hadronic thresholds for heavy quarks. He then defines a potential which includes additional high energy corrections to the adiabatic limit which would be present for finite quark masses. This improved potential allows a systematic low energy expansion of the impact of thresholds on hadronic spectra.
Date:
January 1, 1999
Creator:
Isgur, N.
Object Type:
Article
System:
The UNT Digital Library
Biomass power for rural development. Technical progress report, Phase 2, July 1--September 30, 1998
The project undertaken by the Salix Consortium is a multi-phased, multi-partner endeavor. Phase 1 focused on initial development and testing of the technology and forging the necessary agreements to demonstrate commercial willow production. The Phase 1 objectives have been successfully completed: preparing final design plans for two utility pulverized coal boiler for 20 MW of biopower capacity; developing fuel supply plans for the project with a goal of establishing 365 ha (900 ac) of willow; obtaining power production commitments from the power companies for Phase 2; obtaining construction and environmental permits; and developing an experimental strategy for crop production and power generation improvements needed to assure commercial success. The R and D effort also addresses environmental issues pertaining to introduction of the willow energy system. Beyond those Phase 1 requirements, the Consortium has already successfully demonstrated cofiring at Greenidge Station and has initiated development of the required nursery capacity for acreage scale-up. In Phase 2 every aspect of willow production and power generation from willow biomass will be demonstrated. The ultimate objective of Phase 2 is to transition the work performed under the Biomass Power for Rural Development project into a thriving, self-supported energy crop enterprise.
Date:
January 1, 1999
Creator:
Neuhauser, E.
Object Type:
Report
System:
The UNT Digital Library
Bioremediation of metals and radionuclides: What it is and How itWorks
This primer is intended for people interested in DOE environmental problems and in their potential solutions. It will specifically look at some of the more hazardous metal and radionuclide contaminants found on DOE lands and at the possibilities for using bioremediation technology to clean up these contaminants. Bioremediation is a technology that can be used to reduce, eliminate, or contain hazardous waste. Over the past two decades, it has become widely accepted that microorganisms, and to a lesser extent plants, can transform and degrade many types of contaminants. These transformation and degradation processes vary, depending on physical environment, microbial communities, and nature of contaminant. This technology includes intrinsic bioremediation, which relies on naturally occurring processes, and accelerated bioremediation, which enhances microbial degradation or transformation through inoculation with microorganisms (bioaugmentation) or the addition of nutrients (biostimulation).
Date:
January 1, 1999
Creator:
McCullough, J.; Hazen, Terry & Benson, Sally
Object Type:
Report
System:
The UNT Digital Library
Bioremediation of RDX in the vadose zone beneath the Pantex Plant
The presence of dissolved high explosives (HE), in particular RDX and HMX, is well documented in the perched aquifer beneath the Pantex Plant, but the distribution of HE in the vadose zone has not yet been well defined. Although current remediation activities focus on the contamination in the perched aquifer, eventually regulatory concern is likely to turn to the residual contamination in the vadose zone. Sources of HE include the infiltration of past wastewater discharges from several HE-processing facilities through the ditch drainage system and leachate from former Landfill 3. With limited existing data on the HE distribution in the vadose zone and without preventive action, it must be assumed that residual HE could be leached into infiltrating water, providing a continuing supply of contamination to the perched aquifer. The purpose of this project was to more closely examine the fate and transport of HE in the vadose zone through mathematical modeling and laboratory experimentation. In particular, this report focuses on biodegradation as one possible fate of HE. Biodegradation of RDX in the vadose zone was studied because it is both present in highest concentration and is likely to be of the greatest regulatory concern. This study had several objectives: …
Date:
January 1, 1999
Creator:
Shull, T. L.; Speitel, G. E., Jr. & McKinney, D. C.
Object Type:
Report
System:
The UNT Digital Library
The Boerne Star (Boerne, Tex.), Vol. 94, No. 1, Ed. 1 Friday, January 1, 1999
Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date:
January 1, 1999
Creator:
Chionsini, Brandi
Object Type:
Newspaper
System:
The Portal to Texas History
Border Business Indicators, Volume 23, Number 1, January 1999
Monthly publication documenting statistics related to economic information in the Mexico-Texas border areas including types of border crossings, employment, customs revenues, and other related data.
Date:
January 1999
Creator:
Texas Center for Border Economic and Enterprise Development
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Bottom production asymmetries at the LHC
We present results on bottom hadron production asymmetries at the LHC within both the Lund string fragmentation model and the intrinsic bottom model. The main aspects of the models are summarized and specific predictions for pp collisions at 14 TeV are given. Asymmetries are found to be very small at central rapidities increasing to a few percent at forward rapidities. At very large rapidities intrinsic production could dominate but this region is probably out of reach of any experiment.
Date:
January 1, 1999
Creator:
Norrbin, E. & Vogt, R.
Object Type:
Article
System:
The UNT Digital Library
CEA Horse Newsletter, January 1999
Newsletter issued by the Texas Agricultural Extension Service related to news, events and other updates in the organization related to raising and managing horses, as well as other relevant topics of interest to county extension agents.
Date:
January 1999
Creator:
Texas Agricultural Extension Service
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Cement encapsulation of low-level waste liquids. Final report
Pretreatment of liquid high-level radioactive waste at the West Valley Demonstration Project (WVDP) was essential to ensuring the success of high-level waste (HLW) vitrification. By chemically separating the HLW from liquid waste, it was possible to achieve a significant reduction in the volume of HLW to be vitrified. In addition, pretreatment made it possible to remove sulfates, which posed several processing problems, from the HLW before vitrification took place.
Date:
January 1, 1999
Creator:
Baker, M. N. & Houston, H. M.
Object Type:
Report
System:
The UNT Digital Library
Challenges and Potential Solutions for Reducing Climate Control Loads in Conventional and Hybrid Vehicles
The National Renewable Energy Laboratory, a U.S. Department of Energy national laboratory, is collaborating with U.S. automotive manufacturers to develop innovative techniques to reduce national fuel consumption and vehicle tailpipe emissions by reducing vehicle climate control loads. A new U.S. emissions test, the Supplemental Federal Test Procedure (SFTP), will soon begin measuring tailpipe emissions with the air conditioning system operating. Modeled results show that emissions of oxides of nitrogen (NOx) and carbon monoxide (CO) more than double during the air conditioning part of the SFTP. Reducing the transmittance of the glazing can have a greater impact on the cabin soak temperature than ventilating the vehicle during a hot soak. Reducing the amount of outside air can decrease cooling and heating loads but requires that the recirculated air be cleaned. We discuss a photocatalytic oxidation air-cleaning process for removing volatile organic compounds and bioareosols. We conclude with an example of modeling the thermal comfort of the occupants. An auxiliary load increase of only 400 Watts (W) results in a 0.4 km/L (1 mpg) decrease for a conventional 11.9-L/100-km (28-mpg) vehicle. If every vehicle in the United States were to save only 0.4 km/L (1 mpg), $4 billion (U.S. dollars) would be …
Date:
January 1, 1999
Creator:
Farrington, R.B., Anderson, R., Blake, D.M., Burch, S.D. & Cuddy, M.R., Keyser, M.A., Rugh, J.P.
Object Type:
Article
System:
The UNT Digital Library
CHARACTERISTICS AND PERFORMANCE OF SUPERCRITICAL FLUID EXTRACTION (SFE) IN THE ANALYSIS OF PETROLEUM HYDROCARBONS IN SOILS AND SLUDGES
None
Date:
January 1, 1999
Creator:
Hawthorne, Steven B.
Object Type:
Report
System:
The UNT Digital Library
Characterization of Pipes Using Electret Ion Chambers
The decontamination and characterization of large-bore pipe is difficult because of the various geometries and diameters of pipe and its different material types. A robust decontamination system must be capable of adapting to different pipe diameters (p-eject scope is 6 inches to 24 inches), cleaning surfaces with various surface conditions and material types (i.e., painted, rusted, carbon steel, or stainless steel) and be cost-effective to operate and maintain. The characterization system must be capable of handling the different pipe parameters and detecting contamination on the inside and outside surfaces. It must also operate in a cost-effective manner. Current technology options do not provide a robust system to meet these objectives. The purpose of this project is to verify the need for this technology through determining quantities of pipe available for decontamination (completed FY97), perform a technology screening process to select technologies for decontamination (completed FY97) and characterization (completed FY98), perform treatability studies to collect required performance data (completed FY97), and design and fabricate a prototype system to decontaminate and characterize the internal and external surfaces of large-bore pipe. A field-mobile system capable of performing decontamination and characterization operations will be the main deliverable for this project. A summary of activities …
Date:
January 1, 1999
Creator:
Ebadian, M. A.
Object Type:
Report
System:
The UNT Digital Library
Characterization Plan for the Old Hydrofracture Facility
US Department of Energy (DOE) facilities are required to comply fully with all federal and state regulations. In response to this requirement, the Oak Ridge National Laboratory (ORNL) has established the remedial action program, to provide comprehensive management of areas where past research, development, and waste management activities have been conducted and have resulted in residual contamination of facilities or the environment. One of the objectives of this program is to define the extent of contamination at these sites. The intent is to document the known environmental characteristics of the sites and identify the additional actions, such as sampling, analytical measurements, and modeling, necessary to confirm contamination and the possible migration of contaminants from the sites. One of these sites is the Old Hydrofracture Facility (OHF). The OHF was used for the permanent disposal of liquid radioactive waste in impermeable shale formations at depths ranging from about 230 to 300 m (750 to 1000 ft), from 1964 to 1979. The liquid waste was blended into a pumpable grout by mixing it with cement and special clays used to immobilize radionuclides against groundwater transport. This report summarizes the results of several studies at ORNL that have measured the concentration of radionuclides …
Date:
January 1, 1999
Creator:
Francis, C.W.
Object Type:
Report
System:
The UNT Digital Library
Chemical Characterization of Soluble Phosphorus Forms along a Hydrologic Flowpath of a Forested Stream Ecosystem
The concentration and distribution of soluble phosphorus (P) forms were determined in compartments of a hydrologic pathway in a forested watershed (Walker Branch, Tennessee). Rainfall, throughfall, soil water, groundwater, stream water, and water from two sites in Melton Hill reservoir downstream of Walker Branch were examined for soluble reactive and total soluble phosphorus (SRP and TSP). Soluble unreactive P (SUP) was determined from their difference. An increase of TSP from rainfall to throughfall indicated leaching or wash off of P from the canopy. SRP and SUP decreased markedly as water percolated through the soil, suggesting biological uptake and/or geochemical adsorption of phosphate groups on soil particles. Changes in soluble P. concentrations within the stream channel supported previous evidence for biological control of P dynamics in Walker Branch. Overall, SUP (an estimate of soluble organic P) constituted a significant fraction of the total soluble P present in each compartment of the flowpath. An analytical technique using high-performance liquid chromatography (HPLC) to separate the inositol phosphates (IP's) was developed and used in characterizing organic P fractions of natural systems. Commercial orthophosphate, inositol monophosphate (IMP), and inositol hexaphosphate (IHP) were adequately separated from each other on Aminex A-27 resin using a sodium chloride/tetrasodium …
Date:
January 1, 1999
Creator:
Segars, J.E.
Object Type:
Report
System:
The UNT Digital Library
The Christian Chronicle (Oklahoma City, Okla.), Vol. 56, No. 1, Ed. 1, January 1999
Monthly newspaper from Oklahoma City, Oklahoma that includes news and information about the Churches of Christ along with advertising.
Date:
January 1999
Creator:
McBride, Bailey & Shipp, Glover
Object Type:
Newspaper
System:
The Portal to Texas History
Church & Synagogue Libraries, Volume 32, Number 4, January/February 1999
Bimonthly publication of the Church and Synagogue Library Association, containing news and events related to the organization and its members, reviews of books and other materials, and stories of interest to the management of congregational libraries.
Date:
January 1999
Creator:
Church and Synagogue Library Association
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
The Clifton Record (Clifton, Tex.), Vol. 104, No. 1, Ed. 1 Friday, January 1, 1999
Semi-weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
January 1, 1999
Creator:
Smith, W. Leon
Object Type:
Newspaper
System:
The Portal to Texas History
Code One, Volume 14, Number 1, January 1999
Quarterly publication of the Lockheed Martin plant in Fort Worth, Texas describing their products, research, and employees, as well as articles about pilots and others using the aircraft they produce.
Date:
January 1999
Creator:
Lockheed Martin Astronautics Corporation
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
The Colony Leader (The Colony, Tex.), Vol. 17, No. 38, Ed. 1 Friday, January 1, 1999
Weekly newspaper from The Colony, Texas that includes local, state, and national news along with advertising.
Date:
January 1, 1999
Creator:
Watterson, Tim
Object Type:
Newspaper
System:
The Portal to Texas History
Column Experiments for Radionuclide Adsorption Studies of the Culebra Dolomite: Retardation Parameter Estimation for Non-Eluted Actinide Species
The U.S. Department of Energy (DOE) has been developing a nuclear waste disposal facility, the Waste Isolation Pilot Plant (WIPP), located approximately 42 km east of Carlsbad, New Mexico. The WIPP is designed to demonstrate the safe disposal of transuranic wastes produced by the defense nuclear-weapons program. Performance assessment analyses (U.S. DOE, 1996) indicate that human intrusion by inadvertent and intermittent drilling for resources provide the only credible mechanisms for significant releases of radionuclides horn the disposal system. These releases may occur by five mechanisms: (1) cuttings, (2) cavings, (3) spallings, (4) direct brine releases, and (5) long-term brine releases. The first four mechanisms could result in immediate release of contaminant to the accessible environment. For the last mechanism, migration pathways through the permeable layers of rock above the Salado are important, and major emphasis is placed on the Culebra Member of the Rustler Formation because this is the most transmissive geologic layer in the disposal system. For reasons of initial quantity, half-life, and specific radioactivity, certain isotopes of Th, U, Am, and Pu would dominate calculated releases from the WIPP. In order to help quanti~ parameters for the calculated releases, radionuclide transport experiments have been carried out using five …
Date:
January 1, 1999
Creator:
Brown, G. O.; Lucero, D. A. & Perkins, W. G.
Object Type:
Report
System:
The UNT Digital Library
Common Indoor Sources of Volatile Organic Compounds: Emission Rates and Techniques for Reducing Consumer Exposures
This report addresses the common indoor sources of volatile organic compounds specifically the emission rates and techniques for reducing consumer exposures.
Date:
January 1, 1999
Creator:
Hodgson, A. T.
Object Type:
Report
System:
The UNT Digital Library
Compact, low-crosstalk, WDM filter elements for multimode ribbon fiber data links
We have been developing the optical components for a source-routed wavelength division multiplexed (WDM) computer interconnect fabric that uses multi-mode fiber ribbon cable as the transmission medium. We are developing wavelength selectable VCSEL transmitters, interference filters, and a compact broadcast element. Here we report on key results from our interference filter development activities. Our WDM filter approach is based upon post-market machining of the commercially available molded plastic �MT� fiber ribbon connector. We use III-IV semiconductors grown by MBE or MOCVD as the filter materials. The high indices of our thin film materials enable us to use multimode fiber and maintain narrow passbands without the need for micro-optics. We have fabricated both 2-port and 3-port devices based upon this approach. Our current work focuses on 2-port WDM filters suitable for a broadcast and select architecture. Our single-cavity Fabry- Perot (FP) filters have demonstrated insertion losses of < 2 dB for 4 nm passbands. The maximum crosstalk suppression for the single-cavity FP filters is 18dB To improve crosstalk suppression beyond that attainable with the Lorentzian lineshapes of the single-cavity FP we have investigated some multiple-cavity Fabry-Perot (MC-FP) designs which have a spectral response with a flatter top and sharper passband edges. …
Date:
January 1, 1999
Creator:
Deri, R. J.; Emanuel, M. A.; Garrett, H. H.; Krol, D. M.; Larson, M.; Lowry, M. E. et al.
Object Type:
Article
System:
The UNT Digital Library
A compact proton linac for fast neutron cancer therapy
None
Date:
January 1, 1999
Creator:
Lennox, Arlene Judith; /Fermilab; Hamm, Robert W. & /AccSys Tech., Pleasanton
Object Type:
Article
System:
The UNT Digital Library