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1,745 Matching Results
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[Turtle Creek Chorale: Sing for the Cure]
Poster from the Turtle Creek Chorale Collection for the choir's "Sing for the Cure" concert which took place in February, 2002. The pink poster is decorated with black and white photographs of breast cancer patients.
Date:
February 2002
Creator:
Turtle Creek Chorale
Object Type:
Poster
System:
The UNT Digital Library
U.S. Agency for International Development: 2001 Accountability Report
A report about USAID's consolidated financial statements and the adequacy of its controls over the obligation and expenditure of budgetary resources. It also describes USAID's operations and its performance.
Date:
February 2002
Creator:
United States. Agency for International Development.
Object Type:
Report
System:
The UNT Digital Library
U.S. Energy Flow - 2000
None
Date:
February 1, 2002
Creator:
Kaiper, Gina V.
Object Type:
Report
System:
The UNT Digital Library
United Orthodox Synagogues of Houston Bulletin, February 2002
Newsletter of the United Orthodox Synagogues in Houston, including news and events, upcoming services, member announcements, editorials, and other information of interest to congregants.
Date:
February 2002
Creator:
United Orthodox Synagogues of Houston
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
University Press (Beaumont, Tex.), Vol. 78, No. 26, Ed. 1 Friday, February 1, 2002
Semiweekly newspaper from Lamar University in Beaumont, Texas that includes local, national, and campus news along with advertising.
Date:
February 1, 2002
Creator:
Chand, Daniel
Object Type:
Newspaper
System:
The Portal to Texas History
USDOE Top-of-Rail Lubricant Project
Lubrication of wheel/rail systems has been recognized for the last two decades as a very important issue for railroads. Energy savings and less friction and wear can be realized if a lubricant can be used at the wheel/rail interface. On the other hand, adverse influences are seen in operating and wear conditions if improper or excessive lubrication is used. Also, inefficiencies in lubrication need to be avoided for economic and environmental reasons. The top-of-rail (TOR) lubricant concept was developed by Texaco Corporation to lubricate wheels and rails effectively and efficiently. Tranergy Corporation has been developing its SENTRAEN 2000{trademark} lubrication system for the last ten years, and this revolutionary new high-tech on-board rail lubrication system promises to dramatically improve the energy efficiency, performance, safety, and track environment of railroads. The system is fully computer-controlled and ensures that all of the lubricant is consumed as the end of the train passes. Lubricant quantity dispensed is a function of grade, speed, curve, and axle load. Tranergy also has its LA4000{trademark} wheel and rail simulator, a lubrication and traction testing apparatus. The primary task of this project was collecting and analyzing the volatile and semivolatile compounds produced as the lubricant was used. The volatile …
Date:
February 1, 2002
Creator:
Alzoubi, Mohumad F.; Fenske, George R.; Erck, Robert A. & Boparai, Amrit S.
Object Type:
Report
System:
The UNT Digital Library
Use of computed X-ray tomographic data for analyzing the thermodynamics of a dissociating porous sand/hydrate mixture
X-ray computed tomography (CT) is a method that has been used extensively in laboratory experiments for measuring rock properties and fluid transport behavior. More recently, CT scanning has been applied successfully to detect the presence and study the behavior of naturally occurring hydrates. In this study, we used a modified medical CT scanner to image and analyze the progression of a dissociation front in a synthetic methane hydrate/sand mixture. The sample was initially scanned under conditions at which the hydrate is stable (atmospheric pressure and liquid nitrogen temperature, 77 K). The end of the sample holder was then exposed to the ambient air, and the core was continuously scanned as dissociation occurred in response to the rising temperature. CT imaging captured the advancing dissociation front clearly and accurately. The evolved gas volume was monitored as a function of time. Measured by CT, the advancing hydrate dissociation front was modeled as a thermal conduction problem explicitly incorporating the enthalpy of dissociation, using the Stefan moving-boundary-value approach. The assumptions needed to perform the analysis consisted of temperatures at the model boundaries. The estimated value for thermal conductivity of 2.6 W/m K for the remaining water ice/sand mixture is higher than expected based …
Date:
February 2002
Creator:
Freifeld, Barry M.; Kneafsey, Timothy J.; Tomutsa, Liviu; Stern, Laura A. & Kirby, Stephen H.
Object Type:
Article
System:
The UNT Digital Library
User Manual and Supporting Information for Library of Codes for Centroidal Voronoi Point Placement and Associated Zeroth, First, and Second Moment Determination
The theory, numerical algorithm, and user documentation are provided for a new ''Centroidal Voronoi Tessellation (CVT)'' method of filling a region of space (2D or 3D) with particles at any desired particle density. ''Clumping'' is entirely avoided and the boundary is optimally resolved. This particle placement capability is needed for any so-called ''mesh-free'' method in which physical fields are discretized via arbitrary-connectivity discrete points. CVT exploits efficient statistical methods to avoid expensive generation of Voronoi diagrams. Nevertheless, if a CVT particle's Voronoi cell were to be explicitly computed, then it would have a centroid that coincides with the particle itself and a minimized rotational moment. The CVT code provides each particle's volume and centroid, and also the rotational moment matrix needed to approximate a particle by an ellipsoid (instead of a simple sphere). DIATOM region specification is supported.
Date:
February 1, 2002
Creator:
BURKARDT, JOHN; GUNZBURGER, MAX; PETERSON, JANET & BRANNON, REBECCA M.
Object Type:
Report
System:
The UNT Digital Library
Using hydroponic biomass to regulate NOx emissions in long range space travel
The incineration of wastes is one of the most promising reclamation technologies being developed for life support in long range space travel. However, incineration in a closed environment will build up hazardous NOx if not regulated. A technology that can remove NOx under microgravity conditions without the need of expendables is required. Activated carbon prepared from inedible wheat straw and sweet potato stalk that were grown under hydroponic conditions has been demonstrated to be able to adsorb NO and reduce it to N{sub 2}. The high mineral content in the activated carbon prepared from hydroponic biomass prohibits high surface area production and results in inferior NO adsorption capacity. The removal of mineral from the carbon circumvents the aforementioned negative effect. The optimal production conditions to obtain maximum yield and surface area for the activated carbon have been determined. A parametric study on the NO removal efficiency by the activated carbon has been done. The presence of oxygen in flue gas is essential for effective adsorption of NO by the activated carbon. On the contrary, water vapor inhibits the adsorption efficiency of NO. The NO adsorption capacity and the duration before it exceeds the Space Maximum Allowable Concentration were determined. After …
Date:
February 1, 2002
Creator:
Xu, X. H.; Shi, Y.; Chang, S. G.; Fisher, J.; Pisharody, S.; Moran, M. et al.
Object Type:
Article
System:
The UNT Digital Library
Validation of the RESRAD-RECYCLE computer code.
The RESRAD-RECYCLE computer code was developed by Argonne National Laboratory under the sponsorship of the U.S. Department of Energy. It was designed to analyze potential radiation exposures resulting from the reuse and recycling of radioactively contaminated scrap metal and equipment. It was one of two codes selected in an international model validation study concerning recycling of radioactively contaminated metals. In the validation study, dose measurements at various stages of melting a spent nuclear fuel rack at Studsvik RadWaste AB, Sweden, were collected and compared with modeling results. The comparison shows that the RESRAD-RECYCLE results agree fairly well with the measurement data. Among the scenarios considered, dose results and measurement data agree within a factor of 6. Discrepancies may be explained by the geometrical limitation of the RESRAD-RECYCLE's external exposure model, the dynamic nature of the recycling activities, and inaccuracy in the input parameter values used in dose calculations.
Date:
February 1, 2002
Creator:
Cheng, J. J.; Yu, C.; Williams, W. A. & Murphie, W.
Object Type:
Article
System:
The UNT Digital Library
Vector Meson Dominance Model for Radiative Decays Involving Light Scalar Mesons
We study a vector dominance model which predicts a fairly large number of currently interesting decay amplitudes of the types S -> {gamma}{gamma}, V -> S{gamma} and S -> V{gamma}, where S and V denote scalar and vector mesons, in terms of three parameters. As an application we first use our approach to obtain the usual puzzling result {Gamma}({phi} -> f{sub 0}{gamma})/{Gamma}({phi} -> a{sub 0}{sup 0}{gamma}){approx}< 1 rather than the observed value of about 3. The model makes it easy to test in detail a recent proposal to solve this puzzle by including the isospin violating a{sub 0}{sup 0}-f{sub 0} mixing and we find that it seems successful.
Date:
February 1, 2002
Creator:
Black, Deirdre; Harada, Masayasu & Schechter, Joseph
Object Type:
Article
System:
The UNT Digital Library
Verification and Validation Plan for the Codes LSP and ICARUS (PEGASUS)
This report documents the strategies for verification and validation of the codes LSP and ICARUS used for simulating the operation of the neutron tubes used in all modern nuclear weapons. The codes will be used to assist in the design of next generation neutron generators and help resolve manufacturing issues for current and future production of neutron devices. Customers for the software are identified, tube phenomena are identified and ranked, software quality strategies are given, and the validation plan is set forth.
Date:
February 1, 2002
Creator:
Riley, Merle E.; Buss, Richard J.; Campbell, Robert B.; Hopkins, Matthew M.; Miller, Paul A.; Moats, Anne R. et al.
Object Type:
Report
System:
The UNT Digital Library
When You Get Married
Workbook outlining topics for couples to discuss before getting married, including personal expectations, lifestyle choices, finances, and legal obligations under state law.
Date:
February 2002
Creator:
Texas. Attorney-General's Office.
Object Type:
Pamphlet
System:
The Portal to Texas History
Wind Power for America: Rural Electric Utilities Harvest New Crop (Brochure)
Wind Power for America: Rural Electric Utilities Harvest a New Crop is a trifold brochure that strives to educate rural landowners and rural co-op utilities about the benefits of wind power development. It provides examples of rural utilities that have successful wind energy projects and supportive statements from industry members.
Date:
February 1, 2002
Creator:
unknown
Object Type:
Text
System:
The UNT Digital Library
Workforce Investment Act: Improvements Needed in Performance Measures to Provide a More Accurate Picture of WIA's Effectiveness
A letter report issued by the General Accounting Office with an abstract that begins "Congress passed the Workforce Investment Act (WIA) in 1998 to bring most federally funded employment and training services into a single, one one-stop center system. GAO assessed three programs that provide service through this system. States and localities have begun to implement the new performance measurement system for the three WIA-funded programs but report several challenges. States had to change the way they collected and reported performance data. They also faced challenges in implementing these measures due to their complexity and the resource demands created by new measures. Some developed new procedures to obtain access to sensitive records. The performance levels are of particular concern to state and local officials because failure to meet them can result in financial sanctions. As a result, states may be choosing to serve only those job seekers who are most likely to be successful. Even when fully implemented, performance measures may not provide a true picture of WIA-funded program performance because data are neither comparable across states nor timely. The measures include many of the indicators relevant to an employment and training program, such as getting and keeping jobs and …
Date:
February 1, 2002
Creator:
United States. General Accounting Office.
Object Type:
Report
System:
The UNT Digital Library
Z-Interop Interoperability Testing Policies and Procedures: Phase 1 Testing
This document provides an overview and the details of policies and procedures of the Z39.50 Interoperability Testbed Project (referred to as Z-Interop). Specifically, the document lays out the responsibilities and obligations of the Z-Interop testbed and the organizations that participate in interoperability testing. For purposes of this document, Z-Interop staff refers to all members of the Z39.50 Interoperability Testbed Project. Z-Interop participant refers to an individual or organization who tests its Z39.50 client or Z39.50 server through the Z39.50 Interoperability Testbed.
Date:
February 1, 2002
Creator:
Moen, William E.
Object Type:
Text
System:
The UNT Digital Library
The Z Texas Implementation Component of the Library of Texas
This is the project website for the research study Illinois Library Resources and Automation in the Networked Environment. It contains project documentation and resources resulting from the study.
Date:
February 2002
Creator:
Moen, William E.
Object Type:
Website
System:
The UNT Digital Library