Partner
UNT Libraries Government Documents Department
10,713
Oklahoma Historical Society
4,241
UNT Libraries Special Collections
1,345
National Museum of the Pacific War/Admiral Nimitz Foundation
491
UNT Libraries
471
Sterling Municipal Library
368
UNT Music Library
333
Texas Historical Commission
290
Abilene Christian University Library
229
Carl Albert Congressional Research and Studies Center
160
125 More
Collection
Office of Scientific & Technical Information Technical Reports
6,868
Texas Digital Newspaper Program
3,219
Jim Argo Collection
2,797
Congressional Research Service Reports
2,162
Tocker Foundation Grant
1,767
Oklahoma Digital Newspaper Program
1,624
Government Accountability Office Reports
872
National Museum of the Pacific War Oral History Collection
491
National Museum of the Pacific War Digital Archive
491
LGBT Collections
428
258 More
Degree Department
Degree Discipline
Degree Level
Country
States
Year
Month
[24-Hour Film Feast, Movie Reviews, The Color Purple, Lean On Me, Boomerang, Which Way Is Up? Part 2 of 4]
Video recording from The Black Academy of Arts and Letters recorded during their 24-Hour Film Feast, Movie Reviews, The Color Purple, Lean On Me, Boomerang, Which Way Is Up? event in 2002. This video features a dialogue about the films watched during the event with film actors live on stage at Clarence Muse Café Theatre. This video is Part 2 of 4 of the event.
Date:
2002-10-18/2002-10-19
Creator:
unknown
Object Type:
Video
System:
The UNT Digital Library
[24-Hour Film Feast, Movie Reviews, The Color Purple, Lean On Me, Boomerang, Which Way Is Up? Part 3 of 4]
Video recording from The Black Academy of Arts and Letters recorded during their 24-Hour Film Feast, Movie Reviews, The Color Purple, Lean On Me, Boomerang, Which Way Is Up? event in 2002. This video features a dialogue about the films watched during the event with film actors live on stage at Clarence Muse Café Theatre. This video is Part 3 of 4 of the event.
Date:
2002-10-18/2002-10-19
Creator:
unknown
Object Type:
Video
System:
The UNT Digital Library
[24-Hour Film Feast, The Color Purple, Lean On Me, Boomerang, Which Way Is Up? Part 4 of 4]
Video recording from The Black Academy of Arts and Letters recorded during their 24-Hour Film Feast, The Color Purple, Lean On Me, Boomerang, Which Way Is Up? event in 2002. This video features a dialogue about the films watched during the event with film actors live on stage at Clarence Muse Café Theatre. This video is Part 2 of 4 of the event.
Date:
2002-10-18/2002-10-19
Creator:
unknown
Object Type:
Video
System:
The UNT Digital Library
[24-Hour Film Feat featuring four African American female film stars, tape 1 of 4]
Video recording from The Black Academy of Arts and Letters recorded during 24-Hour Film Feast featuring four African American female film stars over the weekend of October 18-19th, 2002. The footage features movie reviews and dialogues with the actresses on films "The Color Purple", "Lean On Me", "Boomerang", and "Which Way Is Up?".
Date:
October 18, 2002
Creator:
unknown
Object Type:
Video
System:
The UNT Digital Library
25 years of technical advances in RFQ accelerators
The radio frequency quadrupole (RFQ) accelerator began as 'The ion linear accelerator with space-uniform strong focusing' conceived by I. M. Kapchinskii and V. A. Teplyakove. In 1979, R. H. Stokes, K. R. Crandall, J. E. Stovall and D. A. Swenson gave this concept the name RFQ. And by 1983, at least 15 laboratories throughout the world were working on various FWQ designs. In the early years, there were many types of geometry considered for the RFQ, but only a few types have survived. The two cavity geometries now used in almost all RFQs are the 4-vane and 4-rod structures. The 4-vane structure is the most popular because its operating frequency range (80 to -500 MHz) is suitable for light ions. Heavy ions require low frequencies (below 200 MHz). Because the 4-rod structure has smaller transverse dimensions than a 4-vane RFQ at the same frequency, the 4-rod RFQ is often preferred for these applications. This paper will describe how the RFQ accelerates and focuses the beam. The paper also discusses some of the important technical advances in designing and building RFQs.
Date:
January 1, 2002
Creator:
Young, L. M. (Lloyd M.)
Object Type:
Article
System:
The UNT Digital Library
100-Picometer Interferometry for EUVL
Future extreme ultraviolet lithography (EWL) steppers will, in all likelihood, have six-mirror projection cameras. To operate at the diffraction limit over an acceptable depth of focus each aspheric mirror will have to be fabricated with an absolute figure accuracy approaching 100 pm rms. We are currently developing visible light interferometry to meet this need based on modifications of our present phase shifting diffraction interferometry (PSDI) methodology where we achieved an absolute accuracy of 250pm. The basic PSDI approach has been further simplified, using lensless imaging based on computational diffractive back-propagation, to eliminate auxiliary optics that typically limit measurement accuracy. Small remaining error sources, related to geometric positioning, CCD camera pixel spacing and laser wavelength, have been modeled and measured. Using these results we have estimated the total system error for measuring off-axis aspheric EUVL mirrors with this new approach to interferometry.
Date:
March 18, 2002
Creator:
Sommargren, G. E.; Phillion, D. W.; Johnson, M. A.; Nguyen, N. O.; Barty, A.; Snell, F. J. et al.
Object Type:
Article
System:
The UNT Digital Library
148-Gd cross section measurements for accelerator target facilities
In a series of experiments at LANSCE's WNR facility, 148Gdp roduction was measured for 600- and 800-MeV protons on tungsten, tantalum, and gold. These experiments used 3 pm thin W, Ta, and Au foils and 10 pm thin A1 activation foils, Spallation yields were determined for many short-lived and long-lived spallation products with these foils using gamma and alpha spectroscopy.
Date:
January 1, 2002
Creator:
Corzine, R. K. (R. Karen); Pitcher, E. J. (Eric J.); Devlin, M. J. (Matthew J.) & Hertel, N. E. (Nolan E.)
Object Type:
Article
System:
The UNT Digital Library
205 kA pulse power supply for neutrino focusing horns
A new underground beamline is being constructed at Fermilab to generate and focus a beam of neutrinos on a detector 450 miles away in Soudan, Minnesota. A compact modulator utilizing capacitive energy storage and SCRs as the switching element has been built and tested at Fermilab. The 0.9 F capacitor bank operates at less than 1 kV. It delivers its output of up to 240 kA directly to the two series connected focusing horns via a multi-layer radiation hard stripline [1]. Dual pulse width capability allows for ready selection of 5.2 ms, for slow beam spills, or 2.6 ms operation for reduced thermal stresses on the focusing horns during fast spill. Intended for installation in an underground equipment room, the design incorporates several novel features to facilitate transport, installation, and maintenance. Various designs were examined to arrive at the most economical approach for providing the high pulse currents to the horns located in the very high radiation field, up to 3 x 10{sup 7} kRads/yr absorbed dose of the beamline. These included charge recovery and electronic polarity reversal systems. The direct coupling approach was selected for its overall economy and compactness. The system has been operational for several months and …
Date:
June 21, 2002
Creator:
Kenneth R. Bourkland, Kevin Roon and David Tinsley
Object Type:
Article
System:
The UNT Digital Library
300 Area Uranium Leach and Adsorption Project
The objective of this study was to measure the leaching and adsorption characteristics of uranium in six near-surface sediment samples collected from the 300 Area of the Hanford Site. Scanning electron micrographs of the samples showed that the uranium contamination in the sediments is most likely present as co-precipitates and/or discrete uranium particles. Molecular probe techniques also confirm the presence of crystalline discrete uranium bearing phases. In all cases, the uranium is present as oxidized uranium (uranyl [U(VI)]). Results from the column leach tests showed that uranium leaching did not follow a constant solubility paradigm. Four of the five contaminated sediments showed a large near instantaneous release of a few percent of the total uranium followed by a slower continual release. Steady-state uranium leachate concentrations were never measured and leaching characteristics and trends were not consistent among the samples. Dissolution kinetics were slow, and the measured leach curves most likely represent a slow kinetically controlled desorption or dissolution paradigm. Batch adsorption experiments were performed to investigate the effect of pH and uranium and carbonate solution concentrations on uranium adsorption onto the uncontaminated sediment. Uranium adsorption Kd values ranged from 0 to > 100 ml/g depending on which solution parameter was …
Date:
November 26, 2002
Creator:
Serne, R. Jeffrey; Brown, Christopher F.; Schaef, Herbert T.; Pierce, Eric M.; Lindberg, Michael J.; Wang, Zheming et al.
Object Type:
Report
System:
The UNT Digital Library
360 Degree Photography to Decrease Exposure, Increase Safety & Minimize Waste
High-resolution digital cameras, in conjunction with software techniques. make possible 360{sup o} photos that allow a person to look all around, up and dawn, and zoom in or out. The software provides the opportunity to attach other information to a 360{sup o} photo such as sound tiles, flat photos (providing additional detail about what is behind a panel or around a corner) and text (Information which can be used to show radiological conditions or identify other hazards not readily visible). The software also allows other 360{sup o} photos to be attached creating a virtual tour where the user can move from area to area, and stop, study and zoom in on areas of interest. A virtual tour of a building or room can be used for facility documentation, informing management and others, work planning and orientation, and training, thus minimizing the need to re-enter hazardous radioactive areas. Reducing entries decreases exposure, increases safety and minimizes waste.
Date:
January 31, 2002
Creator:
LeBaron, G. J.
Object Type:
Article
System:
The UNT Digital Library
805 MHz and 201 MHz RF cavity development for MUCOOL
A muon cooling channel calls for very high acceleratinggradient RF structures to restore the energy lost by muons in theabsorbers. The RF structures have to be operated in a strong magneticfield and thus the use of superconducting RF cavities is excluded. Toachieve a high shunt impedance while maintaining a large enough apertureto accommodate a large transverse emittance muon beam, the cavity designadopted is a pillbox-like geometry with thin Be foils to terminate theelectromagnetic field at the cavity iris. The possibility of using gridsof thin-walled metallic tubes for the termination is also being explored.Many of the RF-related issues for muon cooling channels are being studiedboth theoretically and experimentally using an 805 MHz cavity that has apillbox-like geometry with thin Be windows to terminate the cavityaperture. The design and performance of this cavity are reported here.High-power RF tests of the 805 MHz cavity are in progress at Lab G inFermilab. The cavity has exceeded its design gradient of 30 MV/m,reaching 34 MV/m without external magnetic field. No surface damage wasobserved at this gradient. The cavity is currently under conditioning atLab G with an external magnetic field of 2.5 T. We also present here a201 MHz cavity design for muoncooling channels. The proposed …
Date:
October 10, 2002
Creator:
DLi@lbl.gov
Object Type:
Article
System:
The UNT Digital Library
938 nm Nd-Doped High Power Cladding Pumped Fiber Amplifier
2.1W of 938nm light has been produced in an Nd{sup 3+} doped fiber amplifier. Wavelength dependent bend losses can be employed to minimize 1088nm amplified spontaneous emission giving the optical fiber a distinct advantage over bulk media.
Date:
September 19, 2002
Creator:
Dawson, J; Beach, R; Drobshoff, A; Liao, Z; Pennington, D; Payne, S et al.
Object Type:
Article
System:
The UNT Digital Library
10C.7D1.023-0.1
Access:
Use of this item is restricted to the UNT Community
Recording of Gianluca Ruggieri's 10C.7D1.023-0.1. This is a work for electronics and consists of 4 untitled movements.
Date:
2002
Creator:
Ruggieri, Gianluca
Object Type:
Sound
System:
The UNT Digital Library
[10th Annual Christmas Kwanzaa Concert, Part 1 of 2]
Video recording from The Black Academy of Arts and Letters recorded during their 10th Annual Christmas Kwanzaa Concert event in 2002. This video features various holiday performances by youth and adults to celebrate Christmas and Kwanzaa live on the Naomi Bruton Main Stage. This video is Part 1 of 2 of the event.
Date:
December 14, 2002
Creator:
unknown
Object Type:
Video
System:
The UNT Digital Library
[10th Annual Christmas Kwanzaa, Part 2 of 2]
Video recording from The Black Academy of Arts and Letters recorded during their 10th Annual Christmas Kwanzaa Concert event in 2002. This video features various holiday performances by youth and adults to celebrate Christmas and Kwanzaa live on the Naomi Bruton Main Stage. This video is Part 2 of 2 of the event.
Date:
December 14, 2002
Creator:
unknown
Object Type:
Video
System:
The UNT Digital Library
12th Workshop on Crystalline Silicon Solar Cell Materials and Processes: Extended Abstracts and Papers, August 11-14, 2002, Breckenridge, Colorado
The 12th Workshop will provide a forum for an informal exchange of technical and scientific information between international researchers in the photovoltaic and relevant non-photovoltaic fields. Discussions will include various aspects of impurities and defects in silicon-their properties, the dynamics during processing, and their application for developing low-cost processes for manufacturing high-efficiency silicon solar cells. The workshop will emphasize some of the promising new technologies in Si solar cell fabrication that can lower PV energy costs and meet the production demands of the future. It will also provide an excellent opportunity for researchers, in private industry and at universities, to prioritize mutual needs for future collaborative research. Sessions and panel discussions will review recent advances in crystal growth, new cell structures, new processes and process characterization techniques, and manufacturing approaches suitable for future manufacturing demands . Some presentations will address recent technologies in the microelectronics field that may have a direct bearing on PV. The three-day workshop will consist of presentations by invited speakers, followed by discussion sessions. In addition, there will be two poster sessions presenting the latest research and development results.
Date:
August 1, 2002
Creator:
Sopori, B. L.
Object Type:
Report
System:
The UNT Digital Library
15th Street News (Midwest City, Okla.), Vol. 31, No. 13, Ed. 1 Friday, January 18, 2002
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
January 18, 2002
Creator:
Baldwin, Alisha
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
15th Street News (Midwest City, Okla.), Vol. 31, No. 14, Ed. 1 Friday, January 25, 2002
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
January 25, 2002
Creator:
Baldwin, Alisha
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
15th Street News (Midwest City, Okla.), Vol. 31, No. 15, Ed. 1 Friday, February 1, 2002
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
February 1, 2002
Creator:
Baldwin, Alisha
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
15th Street News (Midwest City, Okla.), Vol. 31, No. 16, Ed. 1 Friday, February 8, 2002
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
February 8, 2002
Creator:
Baldwin, Alisha
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
15th Street News (Midwest City, Okla.), Vol. 31, No. 17, Ed. 1 Friday, February 15, 2002
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
February 15, 2002
Creator:
Baldwin, Alisha
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
15th Street News (Midwest City, Okla.), Vol. 31, No. 18, Ed. 1 Friday, February 22, 2002
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
February 22, 2002
Creator:
Baldwin, Alisha
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
15th Street News (Midwest City, Okla.), Vol. 31, No. 19, Ed. 1 Friday, March 1, 2002
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
March 1, 2002
Creator:
Baldwin, Alisha
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
15th Street News (Midwest City, Okla.), Vol. 31, No. 20, Ed. 1 Friday, March 8, 2002
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
March 8, 2002
Creator:
Baldwin, Alisha
Object Type:
Newspaper
System:
The Gateway to Oklahoma History