Partner
UNT Libraries Special Collections
1,279
UNT Libraries Government Documents Department
762
Private Collection of Jim Bell
753
Oklahoma Historical Society
115
UNT Libraries
110
UNT Music Library
46
National WASP WWII Museum
35
National Museum of the Pacific War/Admiral Nimitz Foundation
34
Sweetwater/Nolan County City-County Library
25
Sterling Municipal Library
22
55 More
Collection
The Black Academy of Arts and Letters Records
1,219
Jim Bell Texas Architecture Photograph Collection
753
Office of Scientific & Technical Information Technical Reports
424
Texas Digital Newspaper Program
328
Congressional Research Service Reports
187
Oklahoma Digital Newspaper Program
132
Tocker Foundation Grant
90
Government Accountability Office Reports
83
The Greensheet
78
Abilene Library Consortium
49
108 More
Degree Department
Degree Discipline
Degree Level
Country
States
Year
Month
Measurement/Evaluation Techniques and Nuclear Data Associated with Fission of 239Pu by Fission Spectrum Neutrons
This Panel was chartered to review and assess new evaluations of work on fission product data, as well as the evaluation process used by the two U.S. nuclear weapons physics laboratories. The work focuses on fission product yields resulting from fission spectrum neutrons incident on plutonium, and includes data from measurements that had not been previously published as well as new or revised fission product cumulative yield data, and related quantities such as Q values and R values. This report documents the Panel's assessment of the work presented by Los Alamos National Laboratory (LANL) and Lawrence Livermore National Laboratory (LLNL). Based on the work presented we have seven key observations: (1) Experiments conducted in the 1970s at LANL, some of which were performed in association with a larger, NIST-led, program, have recently been documented. A preliminary assessment of this work, which will be referred to in this document as ILRR-LANL, shows it to be technically sound. (2) LLNL has done a thorough, unbiased review and evaluation of the available literature and is in the process of incorporating the previously unavailable LANL data into its evaluation of key fission product yields. The results of the LLNL effort, which includes a preliminary …
Date:
March 16, 2010
Creator:
Baisden, Patricia; Bauge, Eric; Ferguson, James; Gilliam, David; Granier, Thierry; Jeanloz, Raymond et al.
Object Type:
Report
System:
The UNT Digital Library
Systematic reduction of sign errors in many-body calculations of atoms and molecules
None
Date:
March 29, 2010
Creator:
Bajdich, M.; Tiago, M. L.; Hood, R. Q.; Kent, P. R. & Reboredo, F. A.
Object Type:
Article
System:
The UNT Digital Library
A deeper look at climate change and national security.
Climate change is a long-term process that will trigger a range of multi-dimensional demographic, economic, geopolitical, and national security issues with many unknowns and significant uncertainties. At first glance, climate-change-related national security dimensions seem far removed from today's major national security threats. Yet climate change has already set in motion forces that will require U.S. attention and preparedness. The extent and uncertainty associated with these situations necessitate a move away from conventional security practices, toward a small but flexible portfolio of assets to maintain U.S. interests. Thoughtful action is required now if we are to acquire the capabilities, tools, systems, and institutions needed to meet U.S. national security requirements as they evolve with the emerging stresses and shifts of climate change.
Date:
March 1, 2010
Creator:
Baker, Arnold Barry; Backus, George A. & Romig, Alton Dale, Jr.
Object Type:
Report
System:
The UNT Digital Library
Some Considerations Regarding Pulsed Correction of Chromatic Aberrations in Final Focusing Systems
Nearly all designs of accelerators for heavy ion fusion rely on a velocity (energy) ramp to compress the beam longitudinally from its length in the accelerator to the length required at the target. The size of the velocity ramp is constrained by the longitudinal emittance of the beam. For example, if the longitudinal emittance is 0.05 eV {center_dot} s and we wish to produce a pulse having a width of {+-}2.5 ns at the target, we must supply an energy tilt such that the energy spread at the target is at least {+-}0.05 eV {center_dot} s/2.5 ns = {+-}2 x 10{sup 7} eV. The minimal value of energy spread occurs when the beam has propagated to the point where there is no correlation between the time and energy variables of the beam particles. (In the simple approximation where the boundary of the longitudinal phase space containing the particles is an ellipse, the ellipse is erect at this point, i.e., not tilted with respect to the axes.) In any case, the energy spread can affect focusing. If, for example, the beam kinetic energy is of the order of 5 GeV, a tilt of {+-}2 x 10{sup 7} eV corresponds to a …
Date:
March 31, 2010
Creator:
Bangerter, Roger
Object Type:
Report
System:
The UNT Digital Library
Stability of modulation transfer function calibration of surface profilometers using binary pseudo-random gratings and arrays with nonideal groove shapes
The major problem of measurement of a power spectral density (PSD) distribution of surface heights with surface profilometers arises due to the unknown Modulation Transfer Function (MTF) of the instruments, which tends to distort the PSD at higher spatial frequencies. The special mathematical properties of binary pseudo-random patterns make them an ideal basis for developing MTF calibration test surfaces. Two-dimensional binary pseudo-random arrays (BPRAs) have been fabricated and used for the MTF calibration of the MicroMap{trademark}-570 interferometric microscope with all available objectives. An investigation into the effects of fabrication imperfections on the quality of the MTF calibration and a procedure for accounting for such imperfections are presented.
Date:
March 31, 2010
Creator:
Barber, Samuel K.; Anderson, Erik H.; Cambie, Rossana; Marchesini, Stefano; McKinney, Wayne R.; Takacs, Peter Z. et al.
Object Type:
Article
System:
The UNT Digital Library
The International Criminal Court (ICC): Jurisdiction, Extradition, and U.S. Policy
This report focuses on the process by which the Office of the Prosecutor investigates allegations of war crimes and second on U.S policy towards the International Criminal Court (ICC) and how the court might assert jurisdiction over U.S. nationals.
Date:
March 16, 2010
Creator:
Barbour, Emily C. & Weed, Matthew C.
Object Type:
Report
System:
The UNT Digital Library
Simulations for experimental study of warm dense matter and inertial fusion energy applications on NDCX-II
The Neutralized Drift Compression Experiment II (NDCX II) is an induction accelerator planned for initial commissioning in 2012. The final design calls for a {approx}3 MeV, {approx}30 A Li{sup +} ion beam, delivered in a bunch with characteristic pulse duration of 1 ns, and transverse dimension of order 1 mm. The purpose of NDCX II is to carry out experimental studies of material in the warm dense matter regime, and ion beam/hydrodynamic coupling experiments relevant to heavy ion based inertial fusion energy. In preparation for this new machine, we have carried out hydrodynamic simulations of ion-beam-heated, metallic solid targets, connecting quantities related to observables, such as brightness temperature and expansion velocity at the critical frequency, with the simulated fluid density, temperature, and velocity. We examine how these quantities depend on two commonly used equations of state.
Date:
March 19, 2010
Creator:
Barnard, J. J.; Armijo, J.; Bieniosek, F. M.; Friedman, A.; Hay, M. J.; Henestroza, E. et al.
Object Type:
Article
System:
The UNT Digital Library
Major Effects in the Thermodynamics of Detonation Products: Phase Segregation versus Ionic Dissociation
Water (H{sub 2}O) and nitrogen (N{sub 2}) are major detonation products of high explosives and it has long been conjectured that they may phase segregate at high enough temperatures and pressures to influence detonation properties of common explosives. We analyze the phase diagram of H{sub 2}O-N{sub 2} mixtures using a thermodynamic theory for polar-nonpolar mixtures and find that phase segregation is unlikely to occur above approximately 1600K. Therefore, H{sub 2}O-N{sub 2} immiscibility is not likely to be relevant for detonation predictions. We propose instead that the high pressure ionic dissociation of water plays an important role in detonation, and model it using a new ionic thermodynamics. We employ this model in chemical equilibrium calculations of standard high explosives, e.g. PETN, HMX and RDX, and find that it performs very well under a wide range of conditions. Thus, although it may require further development, it is likely that explicitly ionic thermodynamics will become a standard tool for explosives modeling.
Date:
March 9, 2010
Creator:
Bastea, S & Fried, L E
Object Type:
Article
System:
The UNT Digital Library
Photoacoustically Measured Speeds of Sound of Liquid HBO2: On Unlocking the Fuel Potential of Boron
Elucidation of geodynamic, geochemical, and shock induced processes is often limited by challenges to accurately determine molecular fluid equations of state (EOS). High pressure liquid state reactions of carbon species underlie physiochemical mechanisms such as differentiation of planetary interiors, deep carbon sequestration, propellant deflagration, and shock chemistry. Here we introduce a versatile photoacoustic technique developed to measure accurate and precise speeds of sound (SoS) of high pressure molecular fluids and fluid mixtures. SoS of an intermediate boron oxide, HBO{sub 2} are measured up to 0.5 GPa along the 277 C isotherm. A polarized Exponential-6 interatomic potential form, parameterized using our SoS data, enables EOS determinations and corresponding semi-empirical evaluations of > 2000 C thermodynamic states including energy release from bororganic formulations. Our thermochemical model propitiously predicts boronated hydrocarbon shock Hugoniot results.
Date:
March 24, 2010
Creator:
Bastea, S.; Crowhurst, J.; Armstrong, M. & Teslich, Nick, Jr.
Object Type:
Article
System:
The UNT Digital Library
Description about preparing Onla dish
This is a description of how to prepare traditional dish called Onla. Dialect: Standard Boro
Date:
March 4, 2010
Creator:
Basumatary, Prafulla
Object Type:
Sound
System:
The UNT Digital Library
Description about weaving Dokhona
This is a description about how to weave a traditional dress called Dokhona.
Date:
March 4, 2010
Creator:
Basumatary, Prafulla
Object Type:
Sound
System:
The UNT Digital Library
Performance of a traditional song
This is a Boro folk song. Dialect: Standard Boro
Date:
March 4, 2010
Creator:
Basumatary, Prafulla
Object Type:
Sound
System:
The UNT Digital Library
Performance of a traditional song
This is a Boro folk song. Dialect: Standard Boro
Date:
March 4, 2010
Creator:
Basumatary, Prafulla
Object Type:
Sound
System:
The UNT Digital Library
Performance of a traditional song
This is a performance of a Boro folk song. Dialect: Standard Boro
Date:
March 4, 2010
Creator:
Basumatary, Prafulla
Object Type:
Sound
System:
The UNT Digital Library
Performance of a traditional song
This is a performance of a Boro folk song. Dialect: Standard Boro
Date:
March 4, 2010
Creator:
Basumatary, Prafulla
Object Type:
Sound
System:
The UNT Digital Library
Personal narrative about Boro history
This is a narration about the Boro history. Dialect: Standard Boro
Date:
March 4, 2010
Creator:
Basumatary, Prafulla
Object Type:
Sound
System:
The UNT Digital Library
Personal narrative about ethnic conflict
This is a personal narrative about the conflict between the Adivasis and the Boros in Kokrajhar district. Dialect: Standard Boro
Date:
March 4, 2010
Creator:
Basumatary, Prafulla
Object Type:
Sound
System:
The UNT Digital Library
Traditional narrative about a lazy husband
This is a folktale about the lazy husband. Dialect: Standard Boro
Date:
March 2, 2010
Creator:
Basumatary, Prafulla
Object Type:
Sound
System:
The UNT Digital Library
Traditional narrative about seasons
This is a folk tale about seasons. Dialect: Standard Boro
Date:
March 1, 2010
Creator:
Basumatary, Prafulla
Object Type:
Sound
System:
The UNT Digital Library
Traditional narrative about the boatman
This is a folktale about the boatman. Dialect: Standard Boro
Date:
March 2, 2010
Creator:
Basumatary, Prafulla
Object Type:
Sound
System:
The UNT Digital Library
Traditional narrative about the fortune teller
This is a folktale about a fortune teller. Dialect: Standard Boro
Date:
March 2, 2010
Creator:
Basumatary, Prafulla
Object Type:
Sound
System:
The UNT Digital Library
Traditional narrative about the widow sister
This is a folk tale about the widow sister. Dialect: Standard Boro
Date:
March 2, 2010
Creator:
Basumatary, Prafulla
Object Type:
Sound
System:
The UNT Digital Library
Proceedings of RIKEN BNL Research Center Workshop: Progress in High-pT Physics at RHIC
This volume archives the presentations at the RIKEN BNL Research Center workshop 'Progress in High-PT Physics at RHIC', held at BNL in March 2010. Much has been learned from high-p{sub T} physics after 10 years of RHIC operations for heavy-ion collisions, polarized proton collisions and d+Au collisions. The workshop focused on recent progress in these areas by both theory and experiment. The first morning saw review talks on the theory of RHIC high-p{sub T} physics by G. Sterman and J. Soffer, and on the experimental results by M. Tannenbaum. One of the most exciting recent results from the RHIC spin program is the first observation of W bosons and their associated single-spin asymmetry. The new preliminary data were reported on the first day of our workshop, along with a theoretical perspective. There also were detailed discussions on the global analysis of polarized parton distributions, including the knowledge on gluon polarization and the impact of the W-data. The main topic of the second workshop day were single-transverse spin asymmetries and their analysis in terms of transverse-momentum dependent parton distributions. There is currently much interest in a future Drell-Yan program at RHIC, thanks to the exciting physics opportunities this would offer. This …
Date:
March 17, 2010
Creator:
Bazilevsky, A.; Bland, L. & Vogelsang, W.
Object Type:
Report
System:
The UNT Digital Library
Federal Stafford Act Disaster Assistance: Presidential Declarations, Eligible Activities, and Funding
This report provides an overview of the Stafford Act and Stafford Act declarations. The report discusses the types of assistance and eligibility, funding caps and cost shares, hazard mitigation assistance, disaster relief funds, and other issues for the 111th Congress.
Date:
March 16, 2010
Creator:
Bea, Keith
Object Type:
Report
System:
The UNT Digital Library