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6,917
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2,521
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1,926
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1,719
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1,520
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970
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442
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Results:
24,889 - 24,905 of
24,905
You S. A. (San Antonio, Tex.), Vol. 19, No. 1, Ed. 1 Friday, June 20, 2003
Newspaper produced by students attending the annual Urban Journalism Workshop at San Antonio College in San Antonio, Texas.
Date:
June 20, 2003
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
You've Got a Free Ticket To Entertaining Destinations, June 22-29
News release about DART's "destination deals," discounts at restaurants, shopping, and entertainment venues with a valid DART or T ticket or pass.
Date:
May 23, 2003
Creator:
Lyons, Morgan
Object Type:
Text
System:
The Portal to Texas History
[Young Dancers at Día de los Muertos Parade]
Photograph of young dancers at a parade hosted by the Mexic-Arte Museum in honor of Día de los Muertos, or Day of the Dead. The dancers wear colorful floral dresses and blue braided ribbons in their hair. Their faces are painted white and black. The photograph was taken at dusk in downtown Austin, Texas.
Date:
November 1, 2003
Creator:
Mexic-Arte Museum (Austin, Tex.)
Object Type:
Photograph
System:
The Portal to Texas History
[Young Latino Artists Exhibition Direction Notes]
Stage direction notes from the annual Young Latino Artists Exhibition for the exhibit, "Splitting Aguas". The pages contain the scripts of one or multiple speakers along with stage cues, and each are edited with scratches and notes in blue pen ink.
Date:
2003
Creator:
Mexic-Arte Museum (Austin, Tex.)
Object Type:
Script
System:
The Portal to Texas History
[Young women converse in front of eagle statue]
Photograph of two young women conversing in front of the "In High Places" sculpture by Gerald Balciar on the UNT campus. The girls can be seen in the bottom portion of the photograph, sitting on the sidewalk. The girl on the right is partially blocked from view by a floral bush in the foreground. The sculpture can be seen in the center of a round patch of grass in the background of the photograph.
Date:
2003~
Creator:
University of North Texas. Center for Media Production.
Object Type:
Photograph
System:
The UNT Digital Library
Your Kingdom Come, Your Will Be Done
Lecture given Wednesday, June 25, 2003 at Abilene Christian University
Date:
June 25, 2003
Creator:
Rushford, Jerry
Object Type:
Sound
System:
The Portal to Texas History
[Youth dance performance, 2003 World Dance Alliance General Assembly]
Photograph of girls in contemporary clothing performing during "En Danza," the Friday evening dance recital, at the World Dance Alliance V General Assembly of The Americas held in Santo Domingo, Dominican Republic in April 2003. The girls are in fifth position and are leaning toward the audience.
Date:
April 25, 2003
Creator:
World Dance Alliance
Object Type:
Photograph
System:
The UNT Digital Library
Youth Illicit Drug Use Prevention: DARE Long-Term Evaluations and Federal Efforts to Identify Effective Programs
Correspondence issued by the General Accounting Office with an abstract that begins "This report contains information on (1) the results of evaluations on the long-term effectiveness of the Drug Abuse Resistance Education program (DARE) elementary school curriculum in preventing illicit drug use among children and (2) federal efforts to identify programs that are effective in preventing illicit drug use among children."
Date:
January 15, 2003
Creator:
United States. General Accounting Office.
Object Type:
Text
System:
The UNT Digital Library
YUCCA MOUNTAIN PROJECT - A BRIEFING --
This report has the following articles: Nuclear waste--a long-term national problem; Spent nuclear fuel; High-level radioactive waste; Radioactivity and the environment; Current storage methods; Disposal options; U.S. policy on nuclear waste; The focus on Yucca Mountain; The purpose and scope of the Yucca Mountain Project; The approach for permanently disposing of waste; The scientific studies at Yucca Mountain; The proposed design for a repository at Yucca Mountain; Natural and engineered barriers would work together to isolate waste; Meticulous science and technology to protect people and the environment; Licensing a repository; Transporting waste to a permanent repository; The Environmental Impact Statement for a repository; Current status of the Yucca Mountain Project; and Further information available on the Internet.
Date:
August 5, 2003
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
ZERO EMISSION POWER PLANTS USING SOLID OXIDE FUEL CELLS AND OXYGEN TRANSPORT MEMBRANES
Over 16,700 hours of operational experience was gained for the Oxygen Transport Membrane (OTM) elements of the proposed SOFC/OTM zero-emission power generation concept. It was repeatedly demonstrated that OTMs with no additional oxidation catalysts were able to completely oxidize the remaining depleted fuel in a simulated SOFC anode exhaust at an O{sub 2} flux that met initial targets. In such cases, neither residual CO nor H{sub 2} were detected to the limits of the gas chromatograph (<10 ppm). Dried OTM afterburner exhaust streams contained up to 99.5% CO{sub 2}. Oxygen flux through modified OTMs was double or even triple that of the standard OTMs used for the majority of testing purposes. Both the standard and modified membranes in laboratory-scale and demonstration-sized formats exhibited stable performance over extended periods (2300 to 3500 hours or 3 to 5 months). Reactor contaminants, were determined to negatively impact OTM performance stability. A method of preventing OTM performance degradation was developed and proven to be effective. Information concerning OTM and seal reliability over extended periods and through various chemical and thermal shocks and cycles was also obtained. These findings were used to develop several conceptual designs for pilot (10 kWe) and commercial-scale (250 kWe) SOFC/OTM …
Date:
June 10, 2003
Creator:
Christie, G. Maxwell & Raybold, Troy M.
Object Type:
Report
System:
The UNT Digital Library
Zimbabwe Update
This report discusses Zimbabwe's economic situation, specifically in the food and agricultural industries.
Date:
August 15, 2003
Creator:
Copson, Raymond W.
Object Type:
Report
System:
The UNT Digital Library
ZioLib: A parallel I/O library
In a distributed memory parallel environment, many applications rely on a serial I/O strategy, where the global array is gathered on a single MPI process and then written out to a file. I/O performance with this approach is largely limited by single process I/O bandwidth. Even when parallel I/O is used, satisfactory parallel scaling is not always observed. It is because in many applications fields are not necessarily in a most favorable parallel decomposition for I/O. The best I/O rates are obtained when a field is decomposed with respect to the array's last dimension (referred to here as Z). Another situation often encountered in many applications is that a field in CPU resident memory is in one index order but must be stored in a disk file in another order. Changing index orders can complicate a parallel I/O implementation and slow down I/O. ZioLib facilitates an efficient parallel I/O for arrays in such situations. In case of a write, ZioLib remaps a distributed field into a Z-decomposition on a subset of processes (which will be called the I/O staging processes) and from there writes to a disk file in parallel. In this Z-decomposition, the data layout of the remapped array …
Date:
August 1, 2003
Creator:
Yang, Woo-Sun & Ding, Chris
Object Type:
Report
System:
The UNT Digital Library
Zn speciation in a soil contaminated by the deposition of a dredged sediment by synchrotron X-ray techniques
The nature and proportion of Zn species present in an agricultural soil overlaid by a dredged contaminated sediment have been untangled by the novel combination of three non-invasive synchrotron-based x-ray techniques: x-ray microfluorescence ({mu}SXRF), microdiffraction ({mu}XRD), and absorption spectroscopy (EXAFS). One primary (franklinite) and two secondary (phyllomanganate and phyllosilicate) Zn-containing minerals were identified in the initial soil, and another primary (ZnS) and a new secondary (Fe-(oxyhydr)oxide) Zn species in the covered soil. The quantitative analysis of EXAFS spectra recorded on bulk samples indicated that ZnS and Zn-Fe (oxyhydr)oxides amounted to 71+-10 percent and 27+-10 percent, respectively, and the other Zn species to less than 10 percent. The two new Zn species found in the covered soil result from the gravitational migration of ZnS particles initially present in the sediment, and from their further oxidative dissolution and fixation of leached Zn on F e (oxyhydr) oxides.
Date:
September 1, 2003
Creator:
Isaure, Marie-Pierre; Manceau, Alain; Laboudigue, Agnes; Tamura, Nobumichi & Marcus, Matthew A.
Object Type:
Article
System:
The UNT Digital Library
ZnTe:Cu Contact Optimization Strategies for Single-Junction and Multijunction CdS/CdTe PV Device Designs
The ability to produce high-performance CdS/CdTe photovoltaic (PV) devices that incorporate high-transparency back contacts for multijunction thin-film PV applications will require an even greater level of understanding than has been required for single-junction devices. This study reports some of our initial investigations at NREL to modify the ZnTe:Cu contact process previously developed for single-junction applications for optimal use as a transparent back contact. We have succeeded in producing devices incorporating a transparent ZnTe:Cu/ITO/metal-grid contact that demonstrates nominally identical light I-V (LIV) performance to the ZnTe:Cu/Ti contact used in single-junction devices. However, we have determined that the transparent conducting oxide (TCO), CdS, CdTe, and ZnTe:Cu layers are all factors in the optical absorption within the device. Finally, we have concluded that optimizing the transparent ZnTe:Cu contact for use with NREL-produced device material will require a more detailed understanding of the evolution of the junction region during the contact process.
Date:
May 1, 2003
Creator:
Gessert, T.; Coutts, T.; Dhere, R.; Duda, A. & Levi, D.
Object Type:
Article
System:
The UNT Digital Library
Zonal Flow Dynamics and Size-scaling of Anomalous Transport
Nonlinear equations for the slow space-time evolution of the radial drift wave envelope and zonal flow amplitude have been self-consistently derived for a model nonuniform tokamak equilibrium within the coherent 4-wave drift wave-zonal flow modulation interaction model of Chen, Lin, and White [Phys. Plasmas 7 (2000) 3129]. Solutions clearly demonstrate turbulence spreading due to nonlinearly enhanced dispersiveness and, consequently, the device-size dependence of the saturated wave intensities and transport coefficients.
Date:
July 30, 2003
Creator:
Chen, Liu; White, Roscoe B. & Zonca, F.
Object Type:
Report
System:
The UNT Digital Library
zPicture: Dynamic Alignment and Visualization Tool for Analyzing Conservation Profiles
None
Date:
October 27, 2003
Creator:
Ovcharenko, I; Loots, G G; Hardison, R C; Miller, W; Stubbs, L; Paar, H et al.
Object Type:
Article
System:
The UNT Digital Library
Zungenschlag
Access:
Use of this item is restricted to the UNT Community
Recording of Andre Bartetzki's Zungenschlag. This is a work for 8 loudspeakers that explores the sounds of vibrating reeds. In German the word "Zunge" (tongue) is a basic term used for reeds in musical instruments. While the composer speaks of vibrating reeds, there are no instrumental sounds of woodwinds within the work. Instead, the composer uses string sounds and actual vibration sounds as the material.
Date:
2003
Creator:
Bartetzki, Andre, 1962-
Object Type:
Sound
System:
The UNT Digital Library