Resource Type

In-Core Thermionic Converter Testing at Los Alamos (open access)

In-Core Thermionic Converter Testing at Los Alamos

None
Date: July 1, 1964
Creator: Ranken, W.A.
System: The UNT Digital Library
The Clean Water Rule for: Recreation (open access)

The Clean Water Rule for: Recreation

A fact sheet detailing the importance for clean water in the United States. The article discusses water's importance in hunting, fishing, kayaking, and other recreation activities.
Date: unknown
Creator: United States. Environmental Protection Agency.
System: The UNT Digital Library
The U.S. Acid Rain Program: Key Insights from the Design, Operation, and Assessment of a Cap-and-Trade Program (open access)

The U.S. Acid Rain Program: Key Insights from the Design, Operation, and Assessment of a Cap-and-Trade Program

This document references the U. S. Acid Rain Program and looks at the Programs accomplishments and effects. Additionally, it offers the program as a template for implementing a Cap-and Trade Program.
Date: July 2017
Creator: Napolitano, Sam; Schreifels, Jeremy; Stevens, Gabrielle; Witt, Maggie; LaCount, Melanie; Forte, Reynaldo et al.
System: The UNT Digital Library
Spill Prevention, Control, and Countermeasure (SPCC) Regulation (open access)

Spill Prevention, Control, and Countermeasure (SPCC) Regulation

An article which discusses the purpose of the Spill Prevention, Control, and Countermeasure (SPCC) rule. It focuses on the kinds of prevention and harm associated with oil spills.
Date: June 2010
Creator: United States. Environmental Protection Agency.
System: The UNT Digital Library
Reglamentos De Caza Y Pesca (open access)

Reglamentos De Caza Y Pesca

This book is part of the collection entitled: Texas State Publications and was provided by UNT Libraries Government Documents Department to The Portal to Texas History, a digital repository hosted by the UNT Libraries.
Date: 2017
Creator: Texas. Parks and Wildlife Department.
System: The Portal to Texas History
Salt Method for Determining Pond Volume (open access)

Salt Method for Determining Pond Volume

Abstract: "Present methods of determining pond volume are time-consuming and laborious. This paper describes a simple, rapid method for determining water volume in ponds by measuring the change in chloride concentration caused by the addition of a known weight of salt. Mean volume estimates derived by this method were not significantly different (F-test; 0.01 level) from those obtained by multiplying surface area by mean depth or measuring the flow rate through fill pipes."
Date: January 1977
Creator: Provine, William C.
System: The Portal to Texas History
Roster of registered Architects (open access)

Roster of registered Architects

This report includes the Roster of registered Architects as of October 1980.
Date: October 1980
Creator: Texas Board of Architectural Examiners
System: The Portal to Texas History
Tornado:The voice of the people in disaster and after (open access)

Tornado:The voice of the people in disaster and after

This report provides information about the tornado damages , history of Lubbock and how the community responded to the Tornado.
Date: September 1971
Creator: Texas Tech University
System: The Portal to Texas History
Sources of revenue growth: a history of state taxes and fees in Texas, 1972-2016 (open access)

Sources of revenue growth: a history of state taxes and fees in Texas, 1972-2016

This publication updates the source of revenues last issued by the comptroller.
Date: January 2017
Creator: Texas. Comptroller's Office.
System: The Portal to Texas History
Hydrologic characteristics of faults at Yucca Mountain, Nevada (open access)

Hydrologic characteristics of faults at Yucca Mountain, Nevada

Yucca Mountain is under study as a potential site for underground storage of high-level radioactive waste, with the principle goal being the safe isolation of the waste from the accessible environment. This paper addresses the hydrogeologic characteristics of the fault zones at Yucca Mountain, focusing primarily on the central part of the mountain where the potential repository block is located.
Date: April 29, 2001
Creator: Dickerson, Robert P.
System: The UNT Digital Library
GEOLGY, RESISTIVITY, AND HYDROGEOCHEMISTRY OF THE OJO CALIENTE HOT SPRINGS AREA, NORTHERN NEW MEXICO (open access)

GEOLGY, RESISTIVITY, AND HYDROGEOCHEMISTRY OF THE OJO CALIENTE HOT SPRINGS AREA, NORTHERN NEW MEXICO

Geothermal fluids of the Ojo Caliente area discharge from a northeast trending normal fault that juxtaposes Precambrian metarhyolite and Tertiary sediments. An electrical resistivity survey shows that the fluids emerge from the fault and flow as a plume of thermal water into cold aquifers east of the fault. Geochemistry of fluids indicates a maximum reservoir temperature at depth of 80/sup 0/C with no suggestion of high temperature isotopic exchange between water and reservoir rocks. From this data, it is believed that the Ojo Caliente system is suitable only for small-scale direct use geothermal applications.
Date: October 1, 1982
Creator: Stix, J.; Pearson, C.; Vuataz, F.; Goff, F.; East, J. & Hoffers, B.
System: The UNT Digital Library
Air Quality Modeling Guidelines (open access)

Air Quality Modeling Guidelines

Document "provid[ing] guidance on models and modeling procedures that are used in support of air permitting in the State of Texas" (p. i).
Date: November 9, 1992
Creator: Texas Air Control Board
System: The Portal to Texas History
An Examination of the Texas Episodic Model and Its Time-Saving Table Interpolation Scheme (open access)

An Examination of the Texas Episodic Model and Its Time-Saving Table Interpolation Scheme

"This paper discusses a model developed by the Texas Air Control Board to expedite the air quality studies required by the state permitting process" (p. 1).
Date: 198X
Creator: Texas Air Control Board
System: The Portal to Texas History
Legislative Budget Board Recommendations Senate Version (open access)

Legislative Budget Board Recommendations Senate Version

Report on the budget recommendations to the 85th Legislature of Texas, including breakdowns of individual branch budgets for the general government, education, health services, and more.
Date: 2018/2019
Creator: Texas. Legislative Budget Board.
System: The Portal to Texas History
High Field Magnet R&D in the USA (open access)

High Field Magnet R&D in the USA

Accelerator magnet technology is currently dominated by the use of NbTi superconductor. New and more demanding applications for superconducting accelerator magnets require the use of alternative materials. Several programs in the US are taking advantage of recent improvements in Nb{sub 3}Sn to develop high field magnets for new applications. Highlights and challenges of the US R and D program are presented along with the status of conductor development. In addition, a new R and D focus, the US LHC Accelerator Research Program, will be discussed.
Date: October 1, 2003
Creator: Gourlay, Stephen A.
System: The UNT Digital Library
From Tragedy to Triumph: Rebuilding Greensburg, Kansas To Be a 100% Renewable Energy City; Preprint (open access)

From Tragedy to Triumph: Rebuilding Greensburg, Kansas To Be a 100% Renewable Energy City; Preprint

On May 4, 2007, Greensburg, Kansas, was hit by a 1.7-mile wide tornado with 200 mph-plus wind speeds. This tornado destroyed or severely damaged 90% of Greensburg?s structures. We discuss the progress made in rebuilding Greensburg, with a focus on the built environment and on meeting Greensburg?s goal of 100% renewable energy, 100% of the time. We also discuss key disaster recovery efforts that enabled Greensburg to reach this goal. Key strategies included a Sustainable Comprehensive Master Plan, an ordinance resolving that city-owned buildings achieve LEED Platinum and 42% energy savings, a strong focus on rebuilding 'right' with an integrated design process, attracting significant and sustained technical experts and national media attention, and linking renewable and energy efficiency technologies to business development. After three years, more than half the homes that have been rebuilt are rated at an average of 40% energy savings. All significant commercial buildings, including the school, hospital, banks, courthouse, and retail buildings, have been rebuilt to LEED Gold and Platinum standards and exceed 40% savings, with many exceeding 50% savings. Greensburg recently constructed a 12.5-MW community wind farm to provide all the remaining energy needed for its energy-efficient buildings and homes.
Date: August 1, 2010
Creator: Pless, S.; Billman, L. & Wallach, D.
System: The UNT Digital Library
Reservoir fracture mapping using microearthquakes: Austin chalk, Giddings field, TX and 76 field, Clinton Co., KY (open access)

Reservoir fracture mapping using microearthquakes: Austin chalk, Giddings field, TX and 76 field, Clinton Co., KY

Patterns of microearthquakes detected downhole defined fracture orientation and extent in the Austin chalk, Giddings field, TX and the 76 field, Clinton Co., KY. We collected over 480 and 770 microearthquakes during hydraulic stimulation at two sites in the Austin chalk, and over 3200 during primary production in Clinton Co. Data were of high enough quality that 20%, 31% and 53% of the events could be located, respectively. Reflected waves constrained microearthquakes to the stimulated depths at the base of the Austin chalk. In plan view, microearthquakes defined elongate fracture zones extending from the stimulation wells parallel to the regional fracture trend. However, widths of the stimulated zones differed by a factor of five between the two Austin chalk sites, indicating a large difference in the population of ancillary fractures. Post-stimulation production was much higher from the wider zone. At Clinton Co., microearthquakes defined low-angle, reverse-fault fracture zones above and below a producing zone. Associations with depleted production intervals indicated the mapped fractures had been previously drained. Drilling showed that the fractures currently contain brine. The seismic behavior was consistent with poroelastic models that predicted slight increases in compressive stress above and below the drained volume.
Date: November 1, 1996
Creator: Phillips, W. S.; Rutledge, J. T.; Gardner, T. L.; Fairbanks, T. D.; Miller, M. E. & Schuessler, B. K.
System: The UNT Digital Library
Integrated analysis of production potential and profitability of a horizontal well in the Lower Glen Rose Formation, Maverick County, Texas (open access)

Integrated analysis of production potential and profitability of a horizontal well in the Lower Glen Rose Formation, Maverick County, Texas

The U.S. Department of Energy/Morgantown Energy Technology Center (DOE/METC) awarded a contract in 1991 to Prime Energy Corporation (PEC) to demonstrate the benefit of using horizontal wells to recover gas from low permeability formations. The project area was located in the Chittim field of Maverick County, Texas. The Lower Glen Rose Formation in the Chittim field was a promising horizontal well candidate based on the heterogenous nature of the reservoir (suggested by large well-to-well variances in reserves) and the low percentage of economical vertical wells. Since there was substantial evidence of reservoir heterogeneity, it was unknown whether the selected, wellsite would penetrate a reservoir with the desired properties for a horizontal well. Thus, an integrated team was formed to combine geologic analysis, seismic interpretation, reservoir engineering, reservoir simulation, and economic assessment to analyze the production potential and profitability of completing a horizontal well in the Lower Glen Rose formation.
Date: March 1, 1995
Creator: Ammer, J. R.; Mroz, T. H.; Zammerilli, A. M.; Yost, A. B., II; Muncey, J. G. & Hegeman, P. S.
System: The UNT Digital Library
Diurnal variation of NMHCs at a downtown site in Nashville: model and measurements. (open access)

Diurnal variation of NMHCs at a downtown site in Nashville: model and measurements.

None
Date: October 11, 2001
Creator: Kotamarthi, V. R.; Doskey, P. V.; Xu, Y.; Wesely, M. L.; Lonneman, W. & Olszyna, K.
System: The UNT Digital Library
Zeolite Membranes for Gas Separations (open access)

Zeolite Membranes for Gas Separations

Silicalite-1, a pure silica zeolite, was deposited on a tubular, asymmetric, {gamma}-alumina support. Single gas permeation experiments with N{sub 2}, CH{sub 4}, and CO{sub 2} were carried out on the membrane. Separation experiments for N{sub 2}/CH{sub 4} mixtures were also conducted. Single-gas permeation of H{sub 2} and separation of H{sub 2}/SF{sub 6} mixture were also carried out with the membrane. Composite membranes of silicalite and Ni-SAPO-34 were also fabricated, but no CO{sub 2}/H{sub 2} selectivity was found. It is proposed to use these membranes for methanol synthesis and separation, and for separating H{sub 2} from gasification products for use as fuel cell fuel, etc.
Date: June 1, 1995
Creator: Falconer, J. & Noble, R.
System: The UNT Digital Library
The production of {pi}{sup {+-}}, K{sup {+-}}, p, k{sup 0} and {Lambda}{sup 0} in hadronic Z{sup 0} decays (open access)

The production of {pi}{sup {+-}}, K{sup {+-}}, p, k{sup 0} and {Lambda}{sup 0} in hadronic Z{sup 0} decays

The authors have measured production fractions and spectra for {pi}{sup {+-}}, K{sup {+-}} and p, and production spectra for K{sup 0} and {Lambda}{sup 0} in both hadronic Z{sup 0} decays and a Z{sup 0} {yields} light quark (uds) subset at SLD. The SLD Cherenkov Ring Imaging Detector was used to identify charged hadrons. The CCD vertex detector was used to select the enriched uds sample. For the global sample, the results are consistent with previous experiments. The authors observe a clear flavor dependence in production spectra, but only a small effect in hadron fractions and {xi} = ln(1/x{sub p}) peak positions.
Date: August 1, 1995
Creator: Baird, K.
System: The UNT Digital Library
Sources of Revenue: A History of State Taxes and Fees in Texas, 1972-2013 (open access)

Sources of Revenue: A History of State Taxes and Fees in Texas, 1972-2013

Guide to the history and current status of Texas state revenue sources from the Texas Comptroller of Public Accounts.
Date: June 2014
Creator: Texas. Comptroller's Office.
System: The Portal to Texas History
A Preliminary Improved Test of the Flavor Independence of Strong Interactions (open access)

A Preliminary Improved Test of the Flavor Independence of Strong Interactions

The authors present an improved comparison of the strong couplings of gluons to light (u, d, and s), c, and b quarks, determined from multijet rates in flavor-tagged samples of hadronic Z{sup 0} decays recorded with the SLC Large Detector at the SLAC Linear Collider between 1993 and 1995. Flavor separation on the basis of lifetime and decay multiplicity differences among hadrons containing light, c, and b quarks was made using the SLD precision tracking system, yielding tags with high purity and low bias against {ge} 3-jet final states. They find: {alpha}{sub s}{sup uds}/{alpha}{sub s}{sup all} = 0.997 {+-} 0.011(stat) {+-} 0.011(syst) {+-} 0.005(theory), {alpha}{sub s}{sup c}/{alpha}{sub s}{sup all} = 0.984 {+-} 0.042 {+-} 0.053 {+-} 0.022, {alpha}{sub s}{sup b}/{alpha}{sub s}{sup all} = 1.022 {+-} 0.019 {+-} 0.023 {+-} 0.012.
Date: June 1, 1997
Creator: Abe, K.; Abe, K.; Akagi, T. & Collaboration, SLD
System: The UNT Digital Library
Production of {pi}{sup {+-}}, K{sup {+-}}, K{sup 0}, K*{sup 0}, {phi}, p and {Lambda}{sup 0} in Hadronic Z{sup 0} Decays (open access)

Production of {pi}{sup {+-}}, K{sup {+-}}, K{sup 0}, K*{sup 0}, {phi}, p and {Lambda}{sup 0} in Hadronic Z{sup 0} Decays

The authors have measured production rates as a function of momentum of the identified hadrons {pi}{sup +}, K{sup +}, K{sup 0}, K*{sup 0}, {phi}, p, {Lambda}{sup 0} and their antihadrons in inclusive hadronic Z{sup 0} decays, as well as separately in decays into light, c and b flavors. In addition they have compared hadron and antihadron production rates in light quark (rather than antiquark) jets. The SLD Cherenkov Ring Imaging Detector was used to identify charged hadrons. The vertex detector was used to tag high-purity samples of light- and b-flavor events. The electron beam polarization was used to tag samples of quark and antiquark jets. Clear flavor dependences are observed, consistent with expectations based upon measured production and decay properties of heavy hadrons. They use the light-flavor results to test the predictions of MLLA QCD and of various fragmentation models. Differences between hadron and antihadron production in light quark jets are observed at high momentum fraction, providing direct evidence that higher-momentum particles are more likely to contain a primary quark or antiquark, and they use these results to make a new direct measurement of strangeness suppression in the jet fragmentation process.
Date: June 1, 1997
Creator: Abe, K.; Abe, K.; Akagi, T. & Collaboration, SLD
System: The UNT Digital Library