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72,496 Matching Results

Start Over Access Open Access Day 24th Language English

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(open access)

[Aircraft Delivery Orders #2]

Orders for several Air Force and WASP pilots to ferry planes from Love Field in Dallas, Texas to Moultrie, Georgia, San Antonio, Texas, and Fort Worth, Texas. The three WASP pilots are Gayle D. Ewing, Nadine B. Ramsey, and Helen A. Turner.

Date: August 24, 1944

Creator: 555th Army Air Forces Base Unit - 5th Ferrying Group

Object Type: Text

System: The Portal to Texas History

(open access)

[Invoice for Repairs from A. J. Warren, September 24, 1957]

Invoice for repairs made by A. J. Warren for Mrs. F. K. Adoue, including replacing a 40-gallon water heater, repairing valves, tapping 3 radiators for bleeder cocks, and repairing leaks on the heating pipe for $278.60, stamped paid on the 14th of October, 1957.

Date: September 24, 1957

Creator: A. J. Warren Plumbing and Heating

Object Type: Text

System: The Portal to Texas History

(open access)

Effects of Global Boundary and Local Collisionality on Magnetic Reconnection in a Laboratory Plasma

The magnetic reconnection process is studied in a wide range of operating conditions in the well-controlled Magnetic Reconnection Experiment. The reconnection rate is observed to be a function of both global (i.e., system size) and local (collisionality) plasma parameters. When only local collisionality is lowered, the current sheet is shortened while effective resistivity is enhanced, both accelerating reconnection rates. At a fixed collisionality, the current sheet length increases with system size, resulting in the reduction of the reconnection rate. These results quantitatively agree with a generalized Sweet-Parker analysis.

Date: July 24, 2007

Creator: A. Kuritsyn, H. Ji, S.P. Gerhardt, Y. Ren, and M. Yamada

Object Type: Report

System: The UNT Digital Library

(open access)

Pressure-induced Breaking of Equilibrium Flux Surfaces in the W7AS Stellarator

Calculations are presented for two shots in the W7AS stellarator which differ only in the magnitude of the current in the divertor control coil, but have very different values of experimentally attainable β (<β> ≈ 2.7% versus <β> ≈ 1.8%). Equilibrium calculations find that a region of chaotic magnetic field line trajectories fills approximately the outer 1/3 of the cross-section in each of these configurations. The field lines in the stochastic region are calculated to behave as if the flux surfaces are broken only locally near the outer midplane and are preserved elsewhere. The calculated magnetic field line diffusion coefficients in the stochastic regions for the two shots are consistent with the observed differences in the attainable β, and are also consistent with the differences in the reconstructed pressure profiles.

Date: April 24, 2007

Creator: A. Reiman, M.C. Zarnstorff, D. Monticello, A. Weller, J. Geiger, and the W7-AS Team

Object Type: Article

System: The UNT Digital Library

(open access)

Depressed electron collector for the Gatling Gun Test Stand

N/A

Date: October 24, 2013

Creator: A., Pikin; Ben-Zvi, Ilan; Chang, X. Y.; Gassner, D.; Litvinenko, V.; Rahman, O. et al.

Object Type: Report

System: The UNT Digital Library

(open access)

NUCLEAR WASTE GLASSES CONTINUOUS MELTING AND BULK VITRIFICAITON

This contribution addresses various aspects of nuclear waste vitrification. Nuclear wastes have a variety of components and composition ranges. For each waste composition, the glass must be formulated to possess acceptable processing and product behavior defined in terms of physical and chemical properties that guarantee the glass can be easily made and resist environmental degradation. Glass formulation is facilitated by developing property-composition models, and the strategy of model development and application is reviewed. However, the large variability of waste compositions presents numerous additional challenges: insoluble solids and molten salts may segregate; foam may hinder heat transfer and slow down the process; molten salts may accumulate in container refractory walls; the glass on cooling may precipitate crystalline phases. These problems need targeted exploratory research. Examples of specific problems and their possible solutions are discussed.

Date: March 24, 2008

Creator: AA, KRUGER & PR, HRMA

Object Type: Article

System: The UNT Digital Library

(open access)

Sorption of Cesium From Aqueous Waste Solution on SuperLig 644 Resin

The removal of cesium from aqueous waste solution was investigated in a column setup using SuperLig(R) 644 resin. The resin was significantly coarser in size than those used in previous studies because of hydraulic problems encountered during pilot-scale tests. The bed volume (BV = 140) at the onset of breakthrough surpassed the design requirement of 100 BV at 50 percent breakthrough. The percent of cesium removed by the resin at the onset of breakthrough was 99.96. The elution of cesium with 0.5 M HNO3 was satisfactory with a peak BV of 2.5. The elution BV for C/Co = 0.01 was 10, which is less than the target of 15 BV. The percent of sorbed cesium eluted from the resin was 99.88 percent. In addition, the BV of the various solutions used for the supporting process steps (feed displacement, post-feed displacement rinse, post-elution rinse, and regeneration) of the cesium ion exchange system was sufficient.

Date: August 24, 2004

Creator: ADU-WUSU, KOFI

Object Type: Article

System: The UNT Digital Library

(open access)

[AIDS ARMS Network by-laws draft]

A by-laws draft by the AIDS ARMS Network, Inc, dated August 24, 1989.

Date: August 24, 1989

Creator: AIDS ARMS Network, Inc.

Object Type: Text

System: The UNT Digital Library

(open access)

[News Release: New Board Member]

A news release from the AIDS Interfaith Network about Rev. Charles Carnhan being elected to the Board of Directors of the AIDS National Interfaith Network.

Date: September 24, 1990

Creator: AIDS Interfaith Network

Object Type: Text

System: The UNT Digital Library

(open access)

[News Release: AIDS Interfaith Network]

A news release from the AIDS Interfaith Network Inc. about being recognized as a model ministry to people with HIV/AIDS at the 2nd annual Conference held in Chicago.

Date: September 24, 1990

Creator: AIDS Interfaith Network Inc.

Object Type: Text

System: The UNT Digital Library

(open access)

HANFORD REGULATORY EXPERIENCE REGULATION AT HANFORD A CASE STUDY

Hanford has played a pivotal role in the United States' defense for more than 60 years, beginning with the Manhattan Project in the 1940s. During its history, the Hanford Site has had nine reactors producing plutonium for the United States' nuclear weapons program. All the reactors were located next to the Columbia River and all had associated low-level radioactive and hazardous waste releases. Site cleanup, which formally began in 1989 with the signing of the Hanford Federal Facility Agreement and Consent Order, also known as the Tri-Party Agreement, involves more than 1,600 waste sites and burial grounds, and the demolition of more than 1,500buildings and structures, Cleanup is scheduled to be complete by 2035. Regulatory oversight of the cleanup is being performed by the U.S. Environmental Protection Agency (EPA) and the Washington State Department of Ecology(Ecology) under the Comprehensive Environmental Response, Compensation, and Liability Act (CERCLA) and the Revised Code of Washington, 'Hazardous Waste Management.' Cleanup of the waste sites and demolition of the many buildings and structures generates large volumes of contaminated soil, equipment, demolition debris, and other wastes that must be disposed of in a secure manner to prevent further environmental degradation. From a risk perspective, it is …

Date: September 24, 2007

Creator: AR, HAWKINS

Object Type: Article

System: The UNT Digital Library

(open access)

Evaluation of the Cask Transportation Facility Modifications (CTFM) compliance to DOE order 6430.1A Project A.5 and A.6

This report was prepared to evaluate the compliance of CTFM to DOE Order 6430.1A. This document presents the results of an evaluation that was performed to assess compliance of the K West (KW) Cask Transportation Facility Modifications (CTFM) designs against applicable requirements of Department of Energy (DOE) Order 6430.1 A, General Design Criteria. This evaluation was grouped under two categories described as Cask Loadout System (CLS) and Cranes/Other Modifications.

Date: April 24, 2000

Creator: ARD, K.E.

Object Type: Report

System: The UNT Digital Library

(open access)

Heavy-Duty Emissions Control: Plasma-Facilitated vs Reformer-Assisted Lean NOx Catalysis

Progress has been made in the control of combustion processes to limit the formation of environmentally harmful species, but lean burn vehicles, such as those powered by diesel engines used for the majority of commercial trucking and off-road applications, remain a major source of nitrogen oxides (NOx) and particulate matter (PM) emissions. Tighter control of the combustion process coupled with exhaust gas recirculation has brought emissions in line with 2004 targets worldwide. Additional modifications to the engine control system, somewhat limited NOx control, and PM filters will likely allow the 2007 limits to be met for the on-highway regulations for heavy-duty engines in the United States. Concern arises when the NOx emission limit of 0.2 g/bhphr set for the year 2010 is considered.

Date: August 24, 2003

Creator: Aardahl, C. L.; Rozmiarek, R. T.; Rappe, K. G.; Mendoza, D. P. & Park, P. W.

Object Type: Article

System: The UNT Digital Library

(open access)

LEEM investigations of clean surfaces driven by energetic ion beams

The original purpose of this award was to use low‐energy electron microscopy (LEEM) to explore the dynamics of surfaces of clean single crystal surfaces when driven by a beam of energetic ions. The goal was to understand the nanoscience of hyperthermal growth, surface erosion by sublimation and irradiation, operation of surface sinks in irradiated materials, diffusion on driven surfaces, and the creation of structural patterns. This project was based on a novel LEEM system constructed by C. P. Flynn, which provided real‐time imaging of surface dynamics by scattering low energy electrons. With the passing of Prof. Flynn in late 2011, this project was completed under a slightly different scope by constructing a low‐energy, inelastic electron scattering (�EELS�) instrument. Consistent with Flynn�s original objectives for his LEEM system, this device probes the dynamics of crystal surfaces. However the measurements are not carried out in real time, but instead are done in the frequency domain, through the energy lost from the probe electrons. The purpose of this device is to study the collective bosonic excitations in a variety of materials, including high temperature superconductors, topological insulators, carbon allotropes including (but not limited to) graphene, etc. The ultimate goal here is to identify …

Date: April 24, 2013

Creator: Abbamonte, Peter M.

Object Type: Report

System: The UNT Digital Library

(open access)

5-Cyano-1,3-phenylene diacetate

This article discusses 5-cyano-1,3-phenylene diacetate.

Date: May 24, 2014

Creator: Abbassi, Bahar; Brumfield, Michela; Jones, Lloyd M.; Nesterov, Vladimir N. & Carr, Andrew J.

Object Type: Article

System: The UNT Digital Library

(open access)

Utilization of Aluminum-Chlorid Residues.

Patent for "new and useful Improvements in the Utilization of Aluminum Chlorid Residues" (lines 6-7) including instructions and illustrations.

Date: February 24, 1920

Creator: Abbott, Lyle Stockton

Object Type: Patent

System: The Portal to Texas History

(open access)

Using Cytochrome c{sub 3} to Make Selenium Nanowires

We report on a new method to make nanostructures, in this case selenium nanowires, in aqueous solution at room temperature. We used the protein cytochrome c{sub 3} to reduce selenate (SeO{sub 4}{sup 2{minus}}) to selenium (Se{sup 0}). Cytochrome c{sub 3} is known for its ability to catalyze reduction of metals including U{sup VI} {yields} U{sup IV}, Cr{sup VI} {yields} Cr{sup III}, Mo{sup VI} {yields} Mo{sup IV}, Cu{sup II} {yields} Cu{sup 0}, Pb{sup II} {yields} Pb{sup 0}, Hg{sup II} {yields} Hg{sup 0}. Nanoparticles of Se{sup 0} precipitated from an aqueous solution at room temperature, followed by spontaneous self-assembling into nanowires. Cytochrome c{sub 3} was extracted from the sulfate-reducing bacteria Desulfovibrio vulgaris (strain Holdenborough) and isolated by the procedure of DerVartanian and Legall.

Date: November 24, 1999

Creator: Abdelouas, A.; Franco, R.; Gong, W. L.; Lutze, W.; Moura, I. & Shelnutt, John A.

Object Type: Article

System: The UNT Digital Library

(open access)

Energy Policy Act of 2005, P.L. 109-58: Electricity Provisions

None

Date: January 24, 2006

Creator: Abel, Amy

Object Type: Report

System: The UNT Digital Library

(open access)

[RE: Information]

A memo from Julie Abel, program associate for the Getty Center for Education in the Arts, to the participants for the Student Assessment Meeting, the Directors' meeting and the Barton Creek Conference. The memo is in regards to information needed for the directors to make travel arrangements, transportation, weather and clothing, meals functions and recreation after the meetings.

Date: October 24, 1989

Creator: Abel, Julie

Object Type: Letter

System: The UNT Digital Library

(open access)

[RE: Urgent Information RE: May, 1994 Regional Institute Directors' Meeting]

Photocopy of a memo from Julie Able, program associate for the Getty Center for Education in the Arts, to the Regional Institute Directors. The memo is in regards to urgent information for the May, 1994 regional institute directors' meeting. Due to unforeseen scheduling obstacles, Leilani Lattin Duke will be unable to attend the director's meeting on Friday, May 7th, 1994. To accommodate this, Duke requests that the directors' meeting in Laguna Beach be moved back one day.

Date: March 24, 1994

Creator: Abel, Julie

Object Type: Letter

System: The UNT Digital Library

(open access)

[Letter to Dr. D. Jack Davis from Julie Anne Abel, with attached grant offer letters - September 24, 1998]

A letter to Dr. D. Jack Davis from Julie Anne Abel regarding a grant from the Getty Education Institute for the Arts to the North Texas Institute for Educators on the Visual Arts (NTIEVA). A four-page offer letter has been attached to be signed.

Date: September 24, 1998

Creator: Abel, Julie A.

Object Type: Letter

System: The UNT Digital Library

(open access)

Effects of Hydrogen Implantation into GaN

Proton implantation in GaN is found to reduce the free carrier density through two mechanisms - first, by creating electron and hole traps at around Ec-0.8eV and Ev+0.9eV that lead to compensation in both n- and p-type material, and second, by leading to formation of (AH)O complexes, where A is any acceptor (Mg, Ca, Zn, Be, Cd). The former mechanism is usefid in creating high resistivity regions for device isolation, whereas the latter produces unintentional acceptor passivation that is detrimental to device performance. The strong affinity of hydrogen for acceptors leads to markedly different redistribution behavior for implanted in n- and p-GaN due to the chemical reaction to form neutral complexes in the latter. The acceptors may be reactivated by simple annealing at 2600{degrees}C, or by electron injection at 25-150{degrees}C that produces debonding of the (AH) centers. Implanted hydrogen is also strongly attracted to regions of strain in heterostructure samples during annealing, leading to pile-up at epi-epi and epi-substrate interfaces. II? spectroscopy shows that implanted hydrogen also decorates VG, defects in undoped and n-GaN.

Date: December 24, 1998

Creator: Abernathy, C.R.; Han, J.; Pearton, S.J.; Shul, R.J.; Song, C.Y.; Stavola, M. et al.

Object Type: Article

System: The UNT Digital Library

captions transcript

Oral History Interview with Emilio Abeyta, June 24, 2016

Emelio E. Abeyta was born in the Santa Rosa, New Mexico area. His family moved to Littlefield for his father’s work. Abeyta began attending Catholic seminary in Santa Fe, New Mexico and then Ohio as a teenager. He served as a priest in various West Texas towns. While serving in Slaton, Texas, Abeyta ran for school board, becoming the first ethnic Mexican school board member and aiding in the integration of the town’s schools. He left the priesthood to work for the Civil Rights Division of the Department of Justice. Afterwards, he attended law school in the Catholic University of America in Washington, D.C. He returned to West Texas, Lubbock, to practice law. In Lubbock Abeyta also ran for a judgeship.

Date: June 24, 2016

Creator: Abeyta, Emilio; Wisely, Karen & Zapata, Joel

Object Type: Video

System: The Portal to Texas History

(open access)

Depth Measurement of Moving Slurry at the Wet End of a Paper Machine

The paper industry has long had a need to better understand and control its papermaking process upstream, specifically at the wet end in the forming section of a paper machine. A vision-based system is under development that addresses this need by automatically measuring and interpreting the pertinent paper web parameters at the wet end in real time. The wet-end characterization of the paper web by a vision system involves a four-dimensional measurement of the slurry in real time. These measurements include the two-dimensional spatial information, the intensity profile, and the depth profile. This paper describes the real-time depth profile measurement system for the high-speed moving slurry. A laser line-based measurement method is used with a high-speed programmable camera to directly measure slurry height. The camera is programmed with a profile algorithm, producing depth data at fast sampling rates. Analysis and experimentation have been conducted to optimize the system for the characteristics of the slurry and laser line image. On-line experimental results are presented.

Date: January 24, 1999

Creator: Abidi, B. R.; Goddard, J. S., Jr.; Hunt, M. A.; Sari-Sarraf, H. & Turner, J. C.

Object Type: Article

System: The UNT Digital Library

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