Partner
UNT Libraries Government Documents Department
279
Oklahoma Historical Society
42
UNT Libraries Special Collections
18
National Museum of the Pacific War/Admiral Nimitz Foundation
14
Sterling Municipal Library
12
Alvin Community College
6
Archer Public Library
5
Carl Albert Congressional Research and Studies Center
5
Gaines County Library
5
Livingston Municipal Library
5
49 More
Collection
Office of Scientific & Technical Information Technical Reports
132
Texas Digital Newspaper Program
121
Congressional Research Service Reports
98
Tocker Foundation Grant
74
Oklahoma Digital Newspaper Program
49
Government Accountability Office Reports
27
Texas Laws and Resolutions Archive
19
National Museum of the Pacific War Oral History Collection
14
National Museum of the Pacific War Digital Archive
14
The Baytown Sun
12
89 More
Degree Department
Country
Year
Month
Day
Language
78th Texas Legislature, Regular Session, Senate Bill 461, Chapter 66
Bill introduced by the Texas Senate relating to the operation of authorized emergency vehicles.
Date:
May 16, 2003
Creator:
Texas. Legislature. Senate.
Object Type:
Legislative Document
System:
The Portal to Texas History
[E-Mail from Craig Gingrich-Philbrook to Paul Bonin-Rodriguez - February 16, 2003]
E-Mail from Craig Gingrich-Philbrook to Paul Bonin-Rodriguez. He fondly writes to Paul informing him that he has just watched his play, Memory's Caretaker, on a tape that Paul sent. He proposes that the play be used as part of a printed forum discussion in Text and Performance Quarterly (TPQ), a scholarly journal. He asks Paul if he would be interested in participating and thanks him for sharing his work with him.
Date:
February 16, 2003
Creator:
Gingrich-Philbrook, Craig
Object Type:
Letter
System:
The Portal to Texas History
The Rambler (Fort Worth, Tex.), Vol. 89, No. 9, Ed. 1 Wednesday, April 16, 2003
Weekly student newspaper from Texas Wesleyan University in Fort Worth, Texas that includes campus and local news along with advertising.
Date:
April 16, 2003
Creator:
Nettles, Marc
Object Type:
Newspaper
System:
The Portal to Texas History
Flow of Business: Typical Day on the Senate Floor
Several authorities govern the daily chamber work of the Senate: the standing rules, the "standing orders," unanimous consent agreements, precedent, and tradition. Because these authorities have different influence at certain times, no Senate session day is truly typical. This report discusses procedures and business that usually occur every session day, and refers to certain business items that may occur less frequently.
Date:
July 16, 2003
Creator:
Rundquist, Paul S.
Object Type:
Report
System:
The UNT Digital Library
Geophysical Models for Nuclear Explosion Monitoring
Geophysical models are increasingly recognized as an important component of regional calibrations for seismic monitoring. The models can be used to predict geophysical measurements, such as body wave travel times, and can be derived from direct regional studies or even by geophysical analogy. While empirical measurements of these geophysical parameters might be preferred, in aseismic regions or regions without seismic stations, this data might not exist. In these cases, models represent a 'best guess' of the seismic properties in a region, which improves on global models such as the PREM (Preliminary Reference Earth Model) or the IASPEI (International Association of Seismology and Physics of the Earth's Interior) models. The model-based predictions can also serve as a useful background for the empirical measurements by removing trends in the data. To this end, Lawrence Livermore National Laboratory (LLNL) has developed the WENA model for Western Eurasia and North Africa. This model is constructed using a regionalization of several dozen lithospheric (crust and uppermost mantle) models, combined with the Laske sediment model and 3SMAC upper mantle. We have evaluated this model using a number of data sets, including travel times, surface waves, receiver functions, and waveform analysis. Similarly, Los Alamos National Laboratory (LANL) …
Date:
July 16, 2003
Creator:
Pasyanos, M E; Walter, W R & Flanagan, M
Object Type:
Article
System:
The UNT Digital Library
Space Debris-de-Orbiting by Vaporization Impulse using Short Pulse Laser
Space debris constitutes a significant hazard to low earth orbit satellites and particularly to manned spacecraft. A quite small velocity decrease from vaporization impulses is enough to lower the perigee of the debris sufficiently for atmospheric drag to de-orbit the debris. A short pulse (picosecond) laser version of the Orion concept can accomplish this task in several years of operation. The ''Mercury'' short pulse Yb:S-FAP laser being developed at LLNL for laser fusion is appropriate for this task.
Date:
September 16, 2003
Creator:
Early, J; Bibeau, C & Claude, P
Object Type:
Article
System:
The UNT Digital Library
Determining the Equation of State Isentrope in an Isochoric Heated Plasma
A novel method for determining the equation-of-state (EOS) along the release isentrope in an isochoric (constant volume) heated plasma is presented. The sensitivity of this approach is demonstrated using two different equation-of-state models for a solid density, 10 eV expanding Al plasma. Determining the material EOS data is validated to pressures near 80 Mbar, much higher than current isentropic compression experiments allow. Limitations at high temperature (T{sub e} {ge} 100 eV) due to the formation of a radiative conduction layer near the rarefaction interface are also illustrated.
Date:
October 16, 2003
Creator:
Foord, M. E.; Reisman, D. B. & Springer, P. T.
Object Type:
Article
System:
The UNT Digital Library
Russia’s Chechnya Conflict: Developments in 2002-2003
None
Date:
April 16, 2003
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Jet-Induced Star Formation
Jets from radio galaxies can have dramatic effects on the medium through which they propagate. We review observational evidence for jet-induced star formation in low ('FR-I') and high ('FR-II') luminosity radio galaxies, at low and high redshifts respectively. We then discuss numerical simulations which are aimed to explain a jet-induced starburst ('Minkowski's Object') in the nearby FR-I type radio galaxy NGC 541. We conclude that jets can induce star formation in moderately dense (10 cm{sup -3}), warm (10{sup 4} K) gas; that this may be more common in the dense environments of forming, active galaxies; and that this may provide a mechanism for 'positive' feedback from AGN in the galaxy formation process.
Date:
December 16, 2003
Creator:
van Breugel, W.; Fragile, C.; Anninos, P. & Murray, S.
Object Type:
Article
System:
The UNT Digital Library
Statistical techniques to find similar objects in images
One problem in similarity-based object retrieval (SBOR) is how to define and estimate the similarity between two objects. In this paper we present a shape similarity measure based on thin-plate splines, and compare its performance with several other measures used in SBOR. We evaluate the methods on both artificial and real images.
Date:
October 16, 2003
Creator:
Fodor, I K
Object Type:
Article
System:
The UNT Digital Library
Positron Annihilation Spectroscopy of Nanostructural Features in Model Reactor Pressure Vessel Steels
Irradiation embrittlement in nuclear reactor pressure vessel steels results from the formation of a high number density of nanometer sized copper rich precipitates and sub-nanometer defect-solute clusters. We present positron annihilation spectroscopy (PAS) results to characterize the compositions and magnetic character of these defects in model A533B reactor pressure vessel steels. The results confirm the presence of copper-rich precipitates after irradiation. The measured orbital electron momentum spectra indicate the precipitates are alloyed with Mn and Ni. The copper precipitates larger than R {approx} 1.2 nm (from SANS measurements) are non-magnetic, which limits the possible Fe content of the precipitates to at most a few %. Notably, large vacancy clusters observed in neutron irradiated Fe-Cu alloys were not observed in the steels after irradiation.
Date:
July 16, 2003
Creator:
Glade, S C; Wirth, B D; Asoka-Kumar, P; Sterne, P A & Odette, G R
Object Type:
Article
System:
The UNT Digital Library
U.S. Bilateral Assistance to Russia: 1992-2002
None
Date:
January 16, 2003
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
The Low-Income Home Energy Assistance Program (LIHEAP): Program and Funding Issues
None
Date:
October 16, 2003
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Chemistry and Materials Science Directorate 2003 Postdoctoral Symposium
None
Date:
July 16, 2003
Creator:
Arsenlis, A.
Object Type:
Report
System:
The UNT Digital Library
Wavefront Control for Extreme Adaptive Optics
Current plans for Extreme Adaptive Optics systems place challenging requirements on wave-front control. This paper focuses on control system dynamics, wave-front sensing and wave-front correction device characteristics. It may be necessary to run an ExAO system after a slower, low-order AO system. Running two independent systems can result in very good temporal performance, provided specific design constraints are followed. The spatially-filtered wave-front sensor, which prevents aliasing and improves PSF sensitivity, is summarized. Different models of continuous and segmented deformable mirrors are studied. In a noise-free case, a piston-tip-tilt segmented MEMS device can achieve nearly equivalent performance to a continuous-sheet DM in compensating for a static phase aberration with use of spatial filtering.
Date:
July 16, 2003
Creator:
Poyneer, L A
Object Type:
Article
System:
The UNT Digital Library
Second Quarter Hanford Seismic Report for Fiscal Year 2003
This describes the earthquakes that occurred on and near the Hanford Site during the second quarter of FY03. Hanford Seismic Monitoring provides an uninterrupted collection of high-quality raw and processed seismic data from the Hanford Seismic Network for the U.S. Department of Energy and its contractors. Hanford Seismic Monitoring also locates and identifies sources of seismic activity and monitors changes in the historical pattern of seismic activity at the Hanford Site. The data are compiled, archived, and published for use by the Hanford Site for waste management, Natural Phenomena Hazards assessments, and engineering design and construction. In addition, the seismic monitoring organization works with the Hanford Site Emergency Services Organization to provide assistance in the event of a significant earthquake on the Hanford Site. The Hanford Seismic Network and the Eastern Washington Regional Network consist of 41 individual sensor sites and 15 radio relay sites maintained by the Hanford Seismic Monitoring staff. For the Hanford Seismic Network, there were 271 triggers during the second quarter of fiscal year 2003. Of these triggers, 141 were earthquakes. Twenty earthquakes were located in the Hanford Seismic Network area. Stratigraphically 9 earthquakes occurred in the Columbia River basalt, 2 were earthquakes in the pre-basalt …
Date:
April 16, 2003
Creator:
Hartshorn, Donald C.; Reidel, Steve P. & Rohay, Alan C.
Object Type:
Report
System:
The UNT Digital Library
Vibrational Spectra of Dense Molecular Fluids in a Laser-Heated DAC: Implications to Shock Compressed Fluids
Recent technical advances have made it possible to obtain very useful spectroscopic information about simple molecules at temperatures and pressures exceeding 2000K and 10 GPa inside a diamond-anvil cell, which is well above any melting point for such systems. This is accomplished by obtaining vibrational spectra via Coherent Anti-Stokes Raman Spectroscopy in conjunction with CW laser heating using a tungsten toroid as a laser target. By the simultaneous use of these techniques, vibrational spectra with relatively high signal to noise can be obtained despite the enormous thermal background generated by the incandescence of extremely hot laser heated material. Temperatures can be measured not only by fitting the Planck radiation to a graybody, but by the spectroscopic evidence of a Boltzmann distribution of molecules in their vibrationally excited quantum levels. Additionally, this technique allows for obtaining data at pressures and temperatures outside the region between the shock hugoniot and isentrope, complementing shock wave experiments.
Date:
July 16, 2003
Creator:
Baer, B. J. & Yoo, C. S.
Object Type:
Article
System:
The UNT Digital Library
[Letter from Becky L. Levy to Filers]
Letter from Becky L. Levy to "Filers" on June 16, 2003 discussing a semiannual campaign finance report with the Texas Ethics Commission due on July 15, 2003. Includes information about electronic filing and exemptions from the electronic filing requirement with the Texas Ethics Commission.
Date:
June 16, 2003
Creator:
unknown
Object Type:
Letter
System:
The UNT Digital Library
Laboratory-Scale SuperLig 639 Column Tests With Hanford Waste Simulants
This report describes the results of SuperLig{Reg} 639 column tests conducted at the Savannah River Technology Center (SRTC) in support of the Hanford River Protection Project - Waste Treatment Plant (RPP-WTP). The RPP-WTP contract was awarded to Bechtel National Inc. (BNI) for the design, construction, and initial operation of a plant for the treatment and vitrification of millions of gallons of radioactive waste currently stored in tanks at Hanford, WA. Part of the current treatment process involves the removal of technetium from tank supernate solutions using columns containing SuperLig{Reg} 639 resin. This report is part of a body of work intended to quantify and optimize the operation of the technetium removal columns with regard to various parameters (such as liquid flow rate, column aspect ratio, resin particle size, loading and elution temperature, etc.). The tests were conducted using nonradioactive simulants of the actual tank waste samples containing rhenium as a surrogate for the technetium in the actual waste. A previous report focused on the impacts of liquid flow rate and column aspect ratio upon performance. More recent studies have focused on the impacts of resin particle size, solution composition, and temperature. This report describes column loading experiments conducted varying temperature …
Date:
May 16, 2003
Creator:
King, William D.; Spencer, William A. & Bussey, Myra Pettis
Object Type:
Report
System:
The UNT Digital Library
The Albany News (Albany, Tex.), Vol. 127, No. 32, Ed. 1 Thursday, January 16, 2003
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
January 16, 2003
Creator:
Lucas, Melinda L.
Object Type:
Newspaper
System:
The Portal to Texas History
The Albany News (Albany, Tex.), Vol. [128], No. [20], Ed. 1 Thursday, October 16, 2003
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
October 16, 2003
Creator:
Lucas, Melinda L.
Object Type:
Newspaper
System:
The Portal to Texas History
Bound states and the Bekenstein bound
We explore the validity of the generalized Bekenstein bound, S<= pi M a. We define the entropy S as the logarithm of the number of states which have energy eigenvalue below M and are localized to a flat space region of width alpha. If boundary conditions that localize field modes are imposed by fiat, then the bound encounters well-known difficulties with negative Casimir energy and large species number, as well as novel problems arising only in the generalized form. In realistic systems, however, finite-size effects contribute additional energy. We study two different models for estimating such contributions. Our analysis suggests that the bound is both valid and nontrivial if interactions are properly included, so that the entropy S counts the bound states of interacting fields.
Date:
October 16, 2003
Creator:
Bousso, Raphael
Object Type:
Article
System:
The UNT Digital Library
Fabrication of Yttria stabilized zirconia thin films on poroussubstrates for fuel cell applications
A process for the deposition of yttria stabilized zirconia (YSZ) films, on porous substrates, has been developed. These films have possible applications as electrolyte membranes in fuel cells. The films were deposited from colloidal suspensions through the vacuum infiltration technique. Films were deposited on both fully sintered and partially sintered substrates. A critical cracking thickness for the films was identified and strategies are presented to overcome this barrier. Green film density was also examined, and a method for improving green density by changing suspension pH and surfactant was developed. A dependence of film density on film thickness was observed, and materials interactions are suggested as a possible cause. Non-shorted YSZ films were obtained on co-fired substrates, and a cathode supported solid oxide fuel cell was constructed and characterized.
Date:
June 16, 2003
Creator:
Leming, Andres
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
Convergent evolution in primates and an insectivore
The cardiovascular risk factor apolipoprotein(a) (apo(a)) has a puzzling distribution among mammals, its presence being limited to a subset of primates and a member of the insectivore lineage, the hedgehog. To explore the evolutionary history of apo(a), we performed extensive genomic sequence comparisons of multiple species with and without an apo(a) gene product, such as human, baboon, hedgehog, lemurand mouse. This analysis indicated that apo(a) arose independently in a subset of primates, including baboon and human, and an insectivore, the hedgehog, and was not simply lost by species lacking it. The similar structural domains shared by the hedgehog and primate apo(a) indicate that they were formed by a unique molecular mechanism involving the convergent evolution of paralogous genes in these distantspecies.
Date:
April 16, 2003
Creator:
Boffelli, Dario; Cheng, Jan-Fang & Rubin, Edward M.
Object Type:
Article
System:
The UNT Digital Library