U N T Established 1890 U N T
University Libraries

Digital Collections

Access

Resource Type

Partner

Collection

Serial/Series Title

Degree Department

Degree Discipline

Degree Level

Country

States

Counties

Decade

Year

Month

Day

Language

72,752 Matching Results

Start Over Access Open Access Day 23rd Language English

Results open in a new window/tab.

Results: 1 - 24 of 72,752 next
Best Match Title Creator Date Created (Newest) Date Created (Oldest) Date Added (Newest) Date Added (Oldest)
World's Fair Certificate (open access)

World's Fair Certificate

New York World's Fair certificate for April 23, 1965 proclaiming that day Oklahoma Land Rush Day.
Date: April 23, 1965
Creator: 1964 New York World's Fair Corporation
Object Type: Text
System: The Gateway to Oklahoma History
[Funeral Program for Derek Dewayne Dixon, February 23, 2008] (open access)

[Funeral Program for Derek Dewayne Dixon, February 23, 2008]

Funeral program for Derek Dewayne Dixon, born May 16, 1984 and died February 17, 2008. The funeral was held February 23, 2008 at Redeeming Grace Baptist Church, officiated by Pastor Kenneth Brown. Funeral arrangements were made through Lewis Funeral Home and he was buried in Meadowlawn Memorial Park in San Antonio, Texas.
Date: February 23, 2008
Creator: A Clark's Creation
Object Type: Pamphlet
System: The Portal to Texas History
[Invoice for a hitch ball] (open access)

[Invoice for a hitch ball]

Invoice for items sold to Mr. D. W. Kempner by A. J. Rasmussen & Sons, including a trailer hitch ball along with an insurance receipt.
Date: March 23, 1949
Creator: A. J. Rasmussen & Sons
Object Type: Text
System: The Portal to Texas History
Survey Control for the RHIC Transport Line (open access)

Survey Control for the RHIC Transport Line

None
Date: November 23, 1994
Creator: A., Goldman M. & Marks, J.
Object Type: Report
System: The UNT Digital Library
Astrophysical Gyrokinetics: Kinetic and Fluid Turbulent Cascades In Magentized Weakly Collisional Plasmas (open access)

Astrophysical Gyrokinetics: Kinetic and Fluid Turbulent Cascades In Magentized Weakly Collisional Plasmas

This paper presents a theoretical framework for understanding plasma turbulence in astrophysical plasmas. It is motivated by observations of electromagnetic and density fluctuations in the solar wind, interstellar medium and galaxy clusters, as well as by models of particle heating in accretion disks. All of these plasmas and many others have turbulentmotions at weakly collisional and collisionless scales. The paper focuses on turbulence in a strong mean magnetic field. The key assumptions are that the turbulent fluctuations are small compared to the mean field, spatially anisotropic with respect to it and that their frequency is low compared to the ion cyclotron frequency. The turbulence is assumed to be forced at some system-specific outer scale. The energy injected at this scale has to be dissipated into heat, which ultimately cannot be accomplished without collisions. A kinetic cascade develops that brings the energy to collisional scales both in space and velocity. The nature of the kinetic cascade in various scale ranges depends on the physics of plasma fluctuations that exist there. There are four special scales that separate physically distinct regimes: the electron and ion gyroscales, the mean free path and the electron diffusion scale. In each of the scale ranges separated …
Date: April 23, 2009
Creator: A.A. Schekochihin, S.C. Cowley, W. Dorland, G.W. Hammett, G.G. Howes, E. Quataert, and T. Tatsuno
Object Type: Report
System: The UNT Digital Library
[Summary of cases meeting the CDC definition surveillance report]

[Summary of cases meeting the CDC definition surveillance report]

A set of statistics about patients with AIDS who had requested assistance from the AIDS ARMS Network as of February 23, 1987.
Date: February 23, 1987
Creator: AIDS ARMS Network, Inc.
Object Type: Dataset
System: The UNT Digital Library
[AIDS Coordinating Committee] (open access)

[AIDS Coordinating Committee]

A brief description of the ideas and information Buck Buckingham presented to the AIDS Coordinating Committee to further improve the AIDS ARMS Network.
Date: May 23, 1988
Creator: AIDS Coordinating Committee
Object Type: Text
System: The UNT Digital Library
[Faxed Scan: Seroprevalence of HIV and Risk Behaviors Among Young Homosexual and Bisexual Men] (open access)

[Faxed Scan: Seroprevalence of HIV and Risk Behaviors Among Young Homosexual and Bisexual Men]

A fax receipt and a scanned copy of a published study that indicated that HIV infections were increasing among young homosexual and bisexual men.
Date: August 23, 1994
Creator: AIDS Service of Dallas
Object Type: Text
System: The UNT Digital Library
AntiReflection Coating D (open access)

AntiReflection Coating D

Analytical expressions used to optimize AR coatings for single junction solar cells are extended for use in monolithic, series interconnected multi-junction solar cell AR coating design. The result is an analytical expression which relates the solar cell performance (through J{sub sc}) directly to the AR coating design through the device reflectance. It is also illustrated how AR coating design be used to provide an additional degree of freedom for current matching multi-junction devices.
Date: September 23, 1999
Creator: AIKEN,DANIEL J.
Object Type: Article
System: The UNT Digital Library
High performance anti-reflection coatings for broadband multi-junction solar cells (open access)

High performance anti-reflection coatings for broadband multi-junction solar cells

The success of bandgap engineering has made high efficiency broadband multi-junction solar cells possible with photo-response out to the band edge of Ge. Modeling has been conducted which suggests that current double layer anti-reflection coating technology is not adequate for these devices in certain cases. Approaches for the development of higher performance anti-reflection coatings are examined. A new AR coating structure based on the use of Herpin equivalent layers is presented. Optical modeling suggests a decrease in the solar weighted reflectance of over 2.5{percent} absolute as a result. This structure requires no additional optical material development and characterization because no new optical materials are necessary. Experimental results and a sensitivity analysis are presented.
Date: February 23, 2000
Creator: AIKEN,DANIEL J.
Object Type: Article
System: The UNT Digital Library
DEWATERING TREATMENT SCALE-UP TESTING RESULTS OF HANFORD TANK WASTES (open access)

DEWATERING TREATMENT SCALE-UP TESTING RESULTS OF HANFORD TANK WASTES

This report documents CH2M HILL Hanford Group Inc. (CH2M HILL) 2007 dryer testing results in Richland, WA at the AMEC Nuclear Ltd., GeoMelt Division (AMEC) Horn Rapids Test Site. It provides a discussion of scope and results to qualify the dryer system as a viable unit-operation in the continuing evaluation of the bulk vitrification process. A 10,000 liter (L) dryer/mixer was tested for supplemental treatment of Hanford tank low-activity wastes, drying and mixing a simulated non-radioactive salt solution with glass forming minerals. Testing validated the full scale equipment for producing dried product similar to smaller scale tests, and qualified the dryer system for a subsequent integrated dryer/vitrification test using the same simulant and glass formers. The dryer system is planned for installation at the Hanford tank farms to dry/mix radioactive waste for final treatment evaluation of the supplemental bulk vitrification process.
Date: January 23, 2008
Creator: AR, TEDESCHI
Object Type: Article
System: The UNT Digital Library
Alignment strategy for the ATLAS tracker (open access)

Alignment strategy for the ATLAS tracker

The ATLAS experiment is a multi-purpose particle detector that will study high-energy particle collisions produced by the Large Hadron Collider. For the reconstruction of charged particles, and their production and their decay vertices, ATLAS is equipped with a sophisticated tracking system, unprecedented in size and complexity. Full exploitation of both the Inner Detector and the muon spectrometer requires an accurate alignment. The challenge of aligning the ATLAS tracking devices is discussed, and the ATLAS alignment strategy is presented and illustrated with both data and Monte Carlo results.
Date: September 23, 2007
Creator: ATLAS & Golling, T.
Object Type: Article
System: The UNT Digital Library
ATLAS TrackingEvent Data Model -- 12.0.0 (open access)

ATLAS TrackingEvent Data Model -- 12.0.0

In this report the event data model (EDM) relevant for tracking in the ATLAS experiment is presented. The core component of the tracking EDM is a common track object which is suited to describe tracks in the innermost tracking sub-detectors and in the muon detectors in offline as well as online reconstruction. The design of the EDM was driven by a demand for modularity and extensibility while taking into account the different requirements of the clients. The structure of the track object and the representation of the tracking-relevant information are described in detail.
Date: July 23, 2006
Creator: ATLAS; Akesson, F.; Atkinson, T.; Costa, M.J.; Elsing, M.; Fleischmann, S. et al.
Object Type: Article
System: The UNT Digital Library
Progress and Critical Issues for IFE Blanket and Chamber Research (open access)

Progress and Critical Issues for IFE Blanket and Chamber Research

Advances in high gain target designs for Inertial Fusion Energy (IFE), and the initiation of construction of large megajoule-class laser facilities in the U.S. (National Ignition Facility) and France (Laser-Megajoule) capable of testing the requirements for inertial fusion ignition and propagating burn, have improved the prospects for IFE. Accordingly, there have recently been modest increases in the US fusion research program related to the feasibility of IFE. These research areas include heavy-ion accelerators, Krypton-Fluoride (KrF) gas lasers, diode-pumped, solid-state (DPSSL) lasers, IFE target designs for higher gains, feasibility of low cost IFE target fabrication and accurate injection, and long-lasting IFE fusion chambers and final optics. Since several studies of conceptual IFE power plant and driver designs were completed in 1992-1996 [1-5], U.S. research in the IFE blanket, chamber, and target technology areas has focused on the critical issues relating to the feasibility of IFE concepts towards the goal of achieving economically-competitive and environmentally-attractive fusion energy. This paper discusses the critical issues in these areas, and the approaches taken to address these issues. The U.S. research in these areas, called IFE Chamber and Target Technologies, is coordinated through the Virtual Laboratory for Technology (VLT) formed by the Department of Energy in …
Date: June 23, 1999
Creator: Abdou, M.; Kulcinski, G. L.; Latkowski, J. F.; Logan, B. G.; Meier, W. R.; Moir, R. W. et al.
Object Type: Article
System: The UNT Digital Library
Electric Reliability: Options for Electric Transmission Infrastructure Improvements (open access)

Electric Reliability: Options for Electric Transmission Infrastructure Improvements

The electric utility industry is inherently capital intensive. At the same time, the industry must operate under a changing and sometimes unpredictable regulatory system at both the federal and state level. The Energy Policy Act of 2005 has set in place government activities intended to relieve congestion on the transmission system. Several factors have contributed to the lack of new transmission capacity; these are outlined within this report. This report also discusses earlier pieces of energy legislation.
Date: December 23, 2004
Creator: Abel, Amy
Object Type: Report
System: The UNT Digital Library
Electric Reliability: Options for Electric Transmission Infrastructure Improvements (open access)

Electric Reliability: Options for Electric Transmission Infrastructure Improvements

The electric utility industry is inherently capital intensive. At the same time, the industry must operate under a changing and sometimes unpredictable regulatory system at both the federal and state level. The Energy Policy Act of 2005 has set in place government activities intended to relieve congestion on the transmission system. Several factors have contributed to the lack of new transmission capacity; these are outlined within this report. This report also discusses earlier pieces of energy legislation.
Date: December 23, 2004
Creator: Abel, Amy
Object Type: Report
System: The UNT Digital Library
[Letter from Julie Abel to Nancy Berry, August 23, 1995] (open access)

[Letter from Julie Abel to Nancy Berry, August 23, 1995]

Letter from Julie Abel to Nancy Berry confirming the Getty Center's approval of the North Texas Institute's request for budget revisions.
Date: August 23, 1995
Creator: Abel, Julie
Object Type: Letter
System: The UNT Digital Library
[Letter from Julie Abel to the Regional Institute Directors, February 23, 1995] (open access)

[Letter from Julie Abel to the Regional Institute Directors, February 23, 1995]

Photocopy of a letter from Julie Abel, Program Associate, Getty Center for Education in the Arts, to the Regional Institute Directors. In regards to Pat Edwards, a program officer at the Charles Steward Mott Foundation, requesting names and information on outstanding community school. Abel has faxed the directors a list of the "characteristics" of what an outstanding community school is and the recommendation form. Abel writes that all nominations be sent directly to Edwards. Copied on the letter is Vicki Rosenberg.
Date: February 23, 1995
Creator: Abel, Julie
Object Type: Letter
System: The UNT Digital Library
[Letter from Nancy Berry to William McCarter, September 23, 1997] (open access)

[Letter from Nancy Berry to William McCarter, September 23, 1997]

Letter to William McCarter addressing an enclosed grant offer from the Getty Education Institute for the Arts, October through December 1997.
Date: September 23, 1997
Creator: Abel, Julie
Object Type: Letter
System: The UNT Digital Library
[E-mail correspondence between Julie Abel and RIG Directors] (open access)

[E-mail correspondence between Julie Abel and RIG Directors]

E-mail correspondence between Julie Abel, Program Associate, Getty Center for Education in the Arts, and the RIG directors, in regards to the fiscal year 1997, FY97, and the core program proposal being due October 1, 1995. Abel writes that it would be useful to the Center to know the percentage of fund from the following categories in the FY97 core budgets. The categories are listed below, which include, personnel, operations, supplies etc.
Date: August 23, 1995
Creator: Abel, Julie
Object Type: Letter
System: The UNT Digital Library
[RE: "Beyond The 3 Rs: Transforming Education in the Arts," November 23, 1994] (open access)

[RE: "Beyond The 3 Rs: Transforming Education in the Arts," November 23, 1994]

Photocopy of a letter from Julie Abel to Sheila Brown, Anne Lindsey, Jessie Lovano-Kerr, Nancy MacGregor, Bill McCarter, Susan Rotilie, and Joyce Wright. Cc'd are Jack Davis, Ginni Gembica, Phyllis Johnson, Jeff Patchen, Nancy Roucher, Lori Weisgerber, Margaret DiBlasio, Edith Johnson, Michael Parsons, Vicki J. Rosenberg and Sunu Sukumaran. Providing logistics about "Beyond The 3 Rs: Transforming Education in the Arts" conference to be held January 12-14, 1995 at the Washington Hilton and Towers in Washington D.C. The letter is written to those will be exhibiting at the conference and provides specifications for the exhibit space. An exhibit schedule for the conference is included on the third page.
Date: November 23, 1994
Creator: Abel, Julie
Object Type: Letter
System: The UNT Digital Library
[RE: "Beyond the 3Rs: Transforming Education in the Arts," Exhibition Information] (open access)

[RE: "Beyond the 3Rs: Transforming Education in the Arts," Exhibition Information]

Photocopy of a memo from Julie Abel, Program Associate, Getty Center for Education in the Arts, to Sheila Brown, Jessie Lovano-Kerr, William McCarter, Joyce Wright, Anne Lindsey, Nancy MacGregor and Susan Rotilie. The memo is in regards to information and instructions regarding the regional institute directors exhibit booth and assistant at the Center's fifth national conference. Also included in the memo is further information on the upcoming conference, exhibition schedules, floor plans and guidelines.
Date: November 23, 1994
Creator: Abel, Julie
Object Type: Letter
System: The UNT Digital Library
Reactive Ion Beam Etching of GaAs and Related Compounds in an Inductively Coupled Plasma of Cl(2)-Ar Mixture (open access)

Reactive Ion Beam Etching of GaAs and Related Compounds in an Inductively Coupled Plasma of Cl(2)-Ar Mixture

Reactive ion beam etching (RD3E) of GaAs, GaP, AIGaAs and GaSb was performed in a Cl2-Ar mixture using an Inductively Coupled Plasma (ICP) source. `The etch rates and yields were strongly affected by ion energy and substrate temperature. The RJBE was dominated by ion-assisted etching at <600 eV and by physical sputtering beyond 600 eV. The temperature dependence of the etch rates revealed three different regimes, depending on the substrate temperature: 1) sputtering-etch limited, 2) products-resorption limited, and 3) mass-transfer limited regions. GaSb showed the overall highest etch rates, while GaAs and AIGaAs were etched at the same rates. The etched features showed extremely smooth morphologies with anisotropic sidewalls.
Date: November 23, 1998
Creator: Abernathy, C. R.; Hahn, Y. B.; Hays, D.; Lambers, E. S.; Lee, J. W.; Pearton, S. J. et al.
Object Type: Article
System: The UNT Digital Library
Inductively Coupled Plasma Etching in ICl- and IBr-Based Chemistries: Part I. GaAs, GaSb and AlGaAs (open access)

Inductively Coupled Plasma Etching in ICl- and IBr-Based Chemistries: Part I. GaAs, GaSb and AlGaAs

High density plasma etching of GaAs, GaSb and AIGaAs was performed in IC1/Ar and lBr/Ar chemistries using an Inductively Coupled Plasma (ICP) source. GaSb and AlGaAs showed maxima in their etch rates for both plasma chemistries as a function of interhalogen percentage, while GaAs showed increased etch rates with plasma composition in both chemistries. Etch rates of all materials increased substantially with increasing rf chuck power, but rapidly decreased with chamber pressure. Selectivities > 10 for GaAs and GaSb over AlGaAs were obtained in both chemistries. The etched surfaces of GaAs showed smooth morphology, which were somewhat better with IC1/Ar than with IBr/& discharge. Auger Electron Spectroscopy analysis revealed equi-rate of removal of group III and V components or the corresponding etch products, maintaining the stoichiometry of the etched surface.
Date: November 23, 1998
Creator: Abernathy, C.R.; Cho, H.; Hahn, Y.B.; Hays, D.C.; Hobson, W.S.; Jung, K.B. et al.
Object Type: Article
System: The UNT Digital Library