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512
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118
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95
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48
Sterling Municipal Library
31
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18
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Office of Scientific & Technical Information Technical Reports
487
Texas Digital Newspaper Program
314
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277
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168
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139
President Gretchen Bataille Records
94
Tocker Foundation Grant
94
Randy Mallory Papers
83
Photographing UNT
80
The Greensheet
72
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Design and Formation of a Large, Tetrahedral, Metal-ligand Cluster Using 1,1'-Binaphthyl Ligands
Many chemists have been fascinated with the development of discrete supramolecular structures that encapsulate guest molecules. These structures can be assembled through covalent or hydrogen bonds, electrostatic or metal-ligand interactions. These host structures have provided valuable insight into the forces involved in small molecule recognition. Our work has focused on the design and study of metal-ligand clusters of varying sizes. The naphthalene [M{sub 4}L{sub 6}]{sup 12-} cluster 1, shown in Figure 1, has demonstrated diastereoselective guest binding and chiral induction properties as well as the ability to catalyze reactions carried out inside the cavity in an enzyme-like manner. However, the size of the cavity (ca. 300-500 {angstrom}{sup 3}) has often limited the scope of substrates for these transformations.
Date:
March 13, 2008
Creator:
Biros, Shannon M.; Yeh, Robert M. & Raymond, Kenneth N.
Object Type:
Article
System:
The UNT Digital Library
Particulate matter chemistry and dynamics in the Twilight Zone at VERTIGO ALOHA and K2 Sites
Understanding particle dynamics in the 'Twilight Zone' is critical to prediction of the ocean's carbon cycle. As part of the VERTIGO (VERtical Transformations In the Global Ocean) project, this rarely sampled regime extending from the base of the euphotic layer to 1000 m, was characterized by double-paired day/night Multiple Unit Large Volume in-situ Filtration System (MULVFS) deployments and by {approx}100 high-frequency CTD/transmissometer/turbidity sensor profiles. VERTIGO studies lasting three weeks, contrasted oligotrophic station ALOHA (22.75{sup o}N 158{sup o}W), sampled in June-July 2004, with a biologically productive location (47{sup o}N 161{sup o}E) near station K2 in the Oyashio, occupied July-August 2005. Profiles of major and minor particulate components (C{sub org}, N, P, Ca, Si, Sr, Ba, Mn) in <1, 1-51, and >51 {micro}m size fractions, in-water optics, neutrally buoyant sediment trap (NBST) fluxes, and zooplankton data were intercompared. MULVFS total C{sub org} and C-Star particle beam attenuation coefficient (C{sub P}) were consistently related at both sites with a 27 {micro}M m{sup -1} conversion factor. 26 At K2, C{sub P} profiles further showed a multitude of transient spikes throughout the water column and spike abundance profiles closely paralleled the double peaked abundance profiles of zooplankton. Also at K2, copepods contributed {approx}40% and 10%, …
Date:
March 25, 2008
Creator:
Bishop, James K.B. & Wood, T.J.
Object Type:
Article
System:
The UNT Digital Library
A human breast cell model of pre-invasive to invasive transition
A crucial step in human breast cancer progression is the acquisition of invasiveness. There is a distinct lack of human cell culture models to study the transition from pre-invasive to invasive phenotype as it may occur 'spontaneously' in vivo. To delineate molecular alterations important for this transition, we isolated human breast epithelial cell lines that showed partial loss of tissue polarity in three-dimensional reconstituted-basement membrane cultures. These cells remained non-invasive; however, unlike their non-malignant counterparts, they exhibited a high propensity to acquire invasiveness through basement membrane in culture. The genomic aberrations and gene expression profiles of the cells in this model showed a high degree of similarity to primary breast tumor profiles. The xenograft tumors formed by the cell lines in three different microenvironments in nude mice displayed metaplastic phenotypes, including squamous and basal characteristics, with invasive cells exhibiting features of higher grade tumors. To find functionally significant changes in transition from pre-invasive to invasive phenotype, we performed attribute profile clustering analysis on the list of genes differentially expressed between pre-invasive and invasive cells. We found integral membrane proteins, transcription factors, kinases, transport molecules, and chemokines to be highly represented. In addition, expression of matrix metalloproteinases MMP-9,-13,-15,-17 was up regulated …
Date:
March 10, 2008
Creator:
Bissell, Mina J; Rizki, Aylin; Weaver, Valerie M.; Lee, Sun-Young; Rozenberg, Gabriela I.; Chin, Koei et al.
Object Type:
Article
System:
The UNT Digital Library
Senior Recital: 2008-03-10 - Keith Bjorklund, oboe
Access:
Use of this item is restricted to the UNT Community
Recital presented at the UNt College of Music Recital Hall in partial fulfillment of the Bachelor of Music (BM) degree.
Date:
March 10, 2008
Creator:
Bjorklund, Keith
Object Type:
Sound
System:
The UNT Digital Library
Fully Integrating the Design Process
The basic approach to designing nuclear facilities in the United States does not currently reflect the routine consideration of proliferation resistance and international safeguards. The fully integrated design process is an approach for bringing consideration of international safeguards and proliferation resistance, together with state safeguards and security, fully into the design process from the very beginning, while integrating them sensibly and synergistically with the other project functions. In view of the recently established GNEP principles agreed to by the United States and at least eighteen other countries, this paper explores such an integrated approach, and its potential to help fulfill the new internationally driven design requirements with improved efficiencies and reduced costs.
Date:
March 1, 2008
Creator:
Bjornard, T. A. & Bean, R. S.
Object Type:
Article
System:
The UNT Digital Library
[Flyer: A Night with Zane]
Flyer advertising an event featuring author Zane and produced by the Black Academy of Arts and Letters on March 28, 2008 at the Clarence Muse Cafe Theatre.
Date:
March 28, 2008
Creator:
Black Academy of Arts and Letters
Object Type:
Pamphlet
System:
The UNT Digital Library
[Flyer: One Monkey Don't Stop No Show]
Flyer advertising the play "One Monkey Don't Stop No Show," which was written by Don Evans, directed by Mark G. Henderson, and produced by the Black Academy of Arts and Letters on March 12-15, 2008 at Jackson State University.
Date:
March 2008
Creator:
Black Academy of Arts and Letters
Object Type:
Pamphlet
System:
The UNT Digital Library
[Flyer: Roundtable Writer's Breakfast]
Flyer advertising a meeting and lecture of writers produced by the Black Academy of Arts and Letters on March 15, 2008 at the Dallas Convention Center Theatre Complex.
Date:
March 2008
Creator:
Black Academy of Arts and Letters
Object Type:
Pamphlet
System:
The UNT Digital Library
[Flyer: Top Dogs of Comedy]
Flyer advertising a comedic performance hosted by the Black Academy of Arts and Letters on March 29, 2008 at the Dallas Convention Center Theatre Complex.
Date:
March 2008
Creator:
Black Academy of Arts and Letters
Object Type:
Pamphlet
System:
The UNT Digital Library
[Program: An Evening with Erykah Badu]
Program for a musical performance featuring Erykah Badu and produced by the Black Academy of Arts and Letters on March 15, 2008 at the Naomi Bruton Theater.
Date:
March 2008
Creator:
Black Academy of Arts and Letters
Object Type:
Pamphlet
System:
The UNT Digital Library
[Program: Children's Chorus and Youth String Orchestra's Concert]
Program for an orchestral performance produced by the Black Academy of Arts and Letters on March 8, 2008 at the Dallas Convention Center Theatre Complex.
Date:
March 2008
Creator:
Black Academy of Arts and Letters
Object Type:
Pamphlet
System:
The UNT Digital Library
[Program: Home]
Program for the play "Home," which was written by Samm-Art Williams, directed by Ted Shine, and produced by the Black Academy of Arts and Letters on March 14, 2008 at the Academy.
Date:
March 2008
Creator:
Black Academy of Arts and Letters
Object Type:
Pamphlet
System:
The UNT Digital Library
[Program: Letter from a Birmingham Jail]
Program for the play "Letter from a Birmingham Jail," which was written by Martin Luther King, Jr., directed by Daniel Wynne, Jr., and produced by the Black Academy of Arts and Letters on March 14, 2008 at the Academy.
Date:
March 2008
Creator:
Black Academy of Arts and Letters
Object Type:
Pamphlet
System:
The UNT Digital Library
[Program: One Kiss]
Program for the play "One Kiss," which was written and directed by Albert Cowart, Jr. and produced by the Black Academy of Arts and Letters on March 12-16, 2008.
Date:
March 2008
Creator:
Black Academy of Arts and Letters
Object Type:
Pamphlet
System:
The UNT Digital Library
[Program: The National Association of Dramatic and Speech Arts 2008 Conference]
Program for a conference of the National Association of Dramatic and Speech Arts hosted by the Black Academy of Arts and Letters on March 12-15, 2008 at the Academy.
Date:
March 2008
Creator:
Black Academy of Arts and Letters
Object Type:
Pamphlet
System:
The UNT Digital Library
[Program: Urban Writers Conference]
Program for a writer's conference produced by the Black Academy of Arts and Letters on March 29, 2008 at the Dallas Convention Center Theatre Complex.
Date:
March 2008
Creator:
Black Academy of Arts and Letters
Object Type:
Pamphlet
System:
The UNT Digital Library
[Program: Voices of Poetry #6]
Program for a poetry event produced by the Black Academy of Arts and Letters on March 20, 2008 at the Clarence Muse Cafe Theatre.
Date:
March 2008
Creator:
Black Academy of Arts and Letters
Object Type:
Pamphlet
System:
The UNT Digital Library
Estimating Filtering Errors Using the Peano Kernel Theorem
The Peano Kernel Theorem is introduced and a frequency domain derivation is given. It is demonstrated that the application of this theorem yields simple and accurate formulas for estimating the error introduced into a signal by filtering it to reduce noise.
Date:
March 1, 2008
Creator:
Blair, Jerome
Object Type:
Article
System:
The UNT Digital Library
Sensitivity of Concentrating Solar Power Trough Performance, Cost and Financing with Solar Advisor Model
A comprehensive solar technology systems analysis model, the Solar Advisor Model (SAM) was developed to support the federal R&D community and the solar industry. This model, developed by staff at NREL and Sandia National Laboratory, is able to model the costs, finances, and performance of concentrating solar power and photovoltaics (PV). Currently, parabolic troughs and concentrating PV are the two concentrating technologies modeled within the SAM environment.
Date:
March 1, 2008
Creator:
Blair, N.; Mehos, M. & Christensen, C.
Object Type:
Article
System:
The UNT Digital Library
Modeling the Impact of State and Federal Incentives on Concentrating Solar Power Market Penetration
This paper presents methodology and results from the Regional Energy Deployment System Model (ReEDS) examining the ability of concentrating solar power (CSP), other renewables, and electricity storage to contribute to the U.S. electric sector.
Date:
March 1, 2008
Creator:
Blair, N.; Short, W. & Mehos, M.
Object Type:
Article
System:
The UNT Digital Library
International Violence Against Women: U.S. Response and Policy Issues
"This report addresses causes, prevalence, and consequences of violence against women (VAW). It provides examples of completed and ongoing U.S. activities that address VAW directly..." (from Summary)
Date:
March 31, 2008
Creator:
Blanchfield, Luisa; Margesson, Rhoda; Seelke, Clare Ribando; Salaam-Blyther, Tiaji & Serafino, Nina M.
Object Type:
Report
System:
The UNT Digital Library
Bench-scale Kinetics Study of Mercury Reactions in FGD Liquors
This document is the final report for Cooperative Agreement DE-FC26-04NT42314, 'Kinetics Study of Mercury Reactions in FGD Liquors'. The project was co-funded by the U.S. DOE National Energy Technology Laboratory and EPRI. The objective of the project has been to determine the mechanisms and kinetics of the aqueous reactions of mercury absorbed by wet flue gas desulfurization (FGD) systems, and develop a kinetics model to predict mercury reactions in wet FGD systems. The model may be used to determine optimum wet FGD design and operating conditions to maximize mercury capture in wet FGD systems. Initially, a series of bench-top, liquid-phase reactor tests were conducted and mercury species concentrations were measured by UV/visible light spectroscopy to determine reactant and byproduct concentrations over time. Other measurement methods, such as atomic absorption, were used to measure concentrations of vapor-phase elemental mercury, that cannot be measured by UV/visible light spectroscopy. Next, a series of bench-scale wet FGD simulation tests were conducted. Because of the significant effects of sulfite concentration on mercury re-emission rates, new methods were developed for operating and controlling the bench-scale FGD experiments. Approximately 140 bench-scale wet FGD tests were conducted and several unusual and pertinent effects of process chemistry on mercury …
Date:
March 31, 2008
Creator:
Blythe, Gary; Currie, John & DeBerry, David
Object Type:
Report
System:
The UNT Digital Library
Air Force Air Refueling: The KC-X Aircraft Acquisition Program
This report discusses the U.S. Air Force in-flight aerial refueling aircraft program. The KC-135, which makes up the preponderance of the Air Force's tanker force, is among the Air Force's oldest aircraft.
Date:
March 4, 2008
Creator:
Bolkcom, Christopher & Knight, William
Object Type:
Report
System:
The UNT Digital Library
Investigations of the Rayleigh-Taylor and Richtmyer-Meshkov Instabilities
The present program is centered on the experimental study of shock-induced interfacial fluid instabilities. Both 2-D (near-sinusoids) and 3-D (spheres) initial conditions are studied in a large, vertical square shock tube facility. The evolution of the interface shape, its distortion, the modal growth rates and the mixing of the fluids at the interface are all objectives of the investigation. In parallel to the experiments, calculations are performed using the Raptor code, on platforms made available by LLNL. These flows are of great relevance to both ICF and stockpile stewardship. The involvement of four graduate students is in line with the national laboratories' interest in the education of scientists and engineers in disciplines and technologies consistent with the labs' missions and activities.
Date:
March 14, 2008
Creator:
Bonazza, Riccardo; Anderson, Mark & Oakley, Jason
Object Type:
Report
System:
The UNT Digital Library