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e-A PHYSICS AT A COLLIDER.
An electron-nucleus (e-A) collider with center-of-mass energy in excess of 50 GeV per electron-nucleon collision will allow the physics community to obtain unprecedented new knowledge of the partonic structure of nuclei. If reliable information is to be extracted on these partonic densities, it is essential to realize that with our current level of understanding of QCD, momentum transfers to the struck partons greater than 1 GeV/c are necessary. This requirement puts a priority on high center-of-mass energy if partonic densities are to be measured over a wide range. Comparing the partonic structure of the free nucleon to that of bound nucleons and measuring the systematic changes in that structure as a function of nucleon number (A) will provide deeper insight into the origins and dynamics of nuclear binding. In addition, e-A collisions will allow the exploration of partonic densities appreciably higher than is accessible in e-p collisions. An e-A collider will allow one to measure the gluonic structure functions of nuclei down to x {approx} 10{sup -3}, information valuable in its own right and essential to a quantitative understanding of highly relativistic A-A collisions. The time-space evolution of partons can only be investigated by studying the modifications of hard collisions …
Date:
January 9, 2001
Creator:
GARVEY, G. T.
Object Type:
Article
System:
The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 101, No. 257, Ed. 1 Tuesday, January 9, 2001
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 9, 2001
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Atmospheric-Pressure Plasma Cleaning of Contaminated Surfaces
Project was to develop a low-cost, environmentally benign technology for the decontamination and decommissioning of transuranic waste. With the invention of the atmospheric-pressure plasma jet the goal was achieved. This device selectively etches heavy metals from surfaces, rendering objects radiation free and suitable for decommissioning. The volatile reaction products are captured on filters, which yields a tremendous reduction in the volume of the waste. Studies on tantalum, a surrogate material for plutonium, have shown that etch rate of 6.0 microns per minute can be achieved under mild conditions. Over the past three years, we have made numerous improvements in the design of the plasma jet. It may now be operated for hundreds of hours and not undergo any degradation in performance. Furthermore, small compact units have been developed, which are easily deployed in the field.
Date:
January 9, 2001
Creator:
Hicks, Robert F. & Selwyn, Gary S.
Object Type:
Report
System:
The UNT Digital Library
Atmospheric Radiation Measurement Program Facilities Newsletter, December 2000.
Monthly newsletter discussing news and activities related to the Atmospheric Radiation Measurement Program, articles about weather and atmospheric phenomena, and other related topics.
Date:
January 9, 2001
Creator:
Atmospheric Radiation Measurement Program (U.S.)
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
Authority of the Federal Energy Regulatory Commission to Fix Electricity Rates and Charges and to Require Refund Payments by a Public Utility
Sections 205 and 206 of the Federal Power Act concern rates and charges collected by a public utility in transmitting or selling electric energy in interstate commerce. These rates and charges are required to be just and reasonable. States retain jurisdiction over facilities for generation, distribution, or transmission of electric energy in intrastate commerce. The Commission has the authority to determine that an existing rate is unjust or unreasonable and set a new rate. In certain situations Federal Energy Regulatory Commission (FERC) may have authority to refund amounts paid in excess of just and reasonable rates. Case law is useful in determining when such a situation may exist.
Date:
January 9, 2001
Creator:
Seitzinger, Michael V.
Object Type:
Report
System:
The UNT Digital Library
Autonomous pathogen detection system 2001
The objective of this project is to design, fabricate and field-demonstrate a fully Autonomous Pathogen Detector (identifier) System (APDS). This will be accomplished by integrating a proven flow cytometer and real-time polymerase chain reaction (PCR) detector with sample collection, sample preparation and fluidics to provide a compact, autonomously operating instrument capable of simultaneously detecting multiple pathogens and/or toxins. The APDS will be designed to operate in fixed locations, where it continuously monitors air samples and automatically reports the presence of specific biological agents. The APDS will utilize both multiplex immuno and nucleic acid assays to provide ''quasi-orthogonal'', multiple agent detection approaches to minimize false positives and increase the reliability of identification. Technical advancements across several fronts must first be made in order to realize the full extent of the APDS. Commercialization will be accomplished through three progressive generations of instruments. The APDS is targeted for domestic applications in which (1) the public is at high risk of exposure to covert releases of bioagent such as in major subway systems and other transportation terminals, large office complexes, and convention centers; and (2) as part of a monitoring network of sensors integrated with command and control systems for wide area monitoring of …
Date:
January 9, 2001
Creator:
Langlois, R. G.; Wang, A.; Colston, B.; Masquelier, D.; Jones, L.; Venkateswaran, K. S. et al.
Object Type:
Report
System:
The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 79, No. 44, Ed. 1 Tuesday, January 9, 2001
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
January 9, 2001
Creator:
Cash, Wanda Garner
Object Type:
Newspaper
System:
The Portal to Texas History
The Boerne Star (Boerne, Tex.), Vol. 95, No. 107, Ed. 1 Tuesday, January 9, 2001
Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date:
January 9, 2001
Creator:
Keasling, Edna & Thompson, Mark
Object Type:
Newspaper
System:
The Portal to Texas History
Brady Standard-Herald and Heart O' Texas News (Brady, Tex.), Ed. 1 Tuesday, January 9, 2001
Semiweekly newspaper from Brady, Texas that includes local, state, and national news along with advertising.
Date:
January 9, 2001
Creator:
Stewart, James E.
Object Type:
Newspaper
System:
The Portal to Texas History
Carbon and hydrogen isotope signatures associated with microbial iron reduction
None
Date:
January 9, 2001
Creator:
Horita, J.
Object Type:
Article
System:
The UNT Digital Library
Comparison of the PSHA results of the 1993-EUS- update and the 1998-TIP studies for waste bar
From 1981 to 1989, Lawrence Livermore National Laboratory (LLNL) developed for the Nuclear Regulatory Commission a method for performing Probabilistic Seismic Hazard Analysis (PSHA) in the eastern US with results documented in NUREG/CR-5250. Improvements in the handling of the uncertainties lead to updated results documented in the 1993-EUS-Update study (NUREG-1488.) These results presented substantial differences with the utilities sponsored study performed by the Electric Power Research Institute (EPRI, 1989.) In order to understand the differences between the two studies, the Nuclear Regulatory Commission (NRC), the Department Of Energy (DOE) and EPRI jointly sponsored a study led by the Senior Seismic Hazard Analysis Committee (SSHAC) the task of which was to explain the differences between the two studies and provide guidance on how to perform a state-of-the-art PSHA. The work and conclusions of the SSHAC are documented in NUREG/CR-6372, 1997. As a follow-up to the 1997 SSHAC study, the Trial Implementation Project (TIP), (UCRL-ID-133494, 1998, NUREG/CR-6607) made use of the SSHAC recommendations and developed a set of more detailed guidance for performing PSHA. The TIP project tested the more complicated issue of development of the seismic zonation and seismicity models on two sites: Watts Bar and Vogtle. It was found that …
Date:
January 9, 2001
Creator:
Savy, J & Bernreuter, D
Object Type:
Report
System:
The UNT Digital Library
Daily Journal (Perry, Okla.), Vol. 108, No. 6, Ed. 1 Tuesday, January 9, 2001
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 9, 2001
Creator:
Brown, Gloria
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Data Qualification Report For DTN: MO0012RIB00065.002, Parameter Values For Transfer Coefficients
A data-qualification evaluation was conducted on Reference Information Base (RIB) data set MOO0 12RIB00065.002, ''Parameter Values for Transfer Coefficients''. The corroborating data method was used to evaluate the data. This method was selected because it closely matches the literature-review method followed to select parameter values. Five criteria were considered when the corroborating method was used: adequacy of the corroborative literature, sufficiency of value-selection criteria, implementation of the selection criteria, documentation of the process, and whether the analysis was conducted in accordance with applicable quality assurance (QA) procedures. Three criteria were used when a literature review was not conducted: appropriate logic used to select parameters, documentation of the process, and whether the analysis was conducted in accordance with applicable QA procedures. The RIB data item, the associated Analysis and Model Report (AMR), the corroborative literature, and the results of an audit revision O/ICN 0 of the AMR were examined. All calculations and the selection process for all values were repeated and confirmed. The qualification team concluded: (1) A sufficient quantity of corroborative literature was reviewed and no additional literature was identified that should have been considered. (2) The selection criteria were sufficient and resulted in valid parameter values. (3) The process …
Date:
January 9, 2001
Creator:
Tung, C. H.
Object Type:
Report
System:
The UNT Digital Library
Experimental Determination of Hydrogen Diffusion Rates in Hydrous Minerals Using the Ion Microprobe
None
Date:
January 9, 2001
Creator:
Suman, K. De; Cole, David R.; Riciputi, Lee R.; Chacko, Thomas & Horita, Juske
Object Type:
Article
System:
The UNT Digital Library
Experimental Determination of Phase Equilibria in the System H{sub 2}O-CO{sub 2}-NaCl at 0.5 Kb from 500 to 800C
An understanding of activity-composition (a/X) relations and phase equilibria for halite-bearing, mixed-species supercritical fluids is critically important to many geological and industrial applications. The authors have performed experiments on the phase equilibria of H{sub 2}O-CO{sub 2}-NaCl fluids from 500 C to 800 C at 500 bars, conditions of significant importance in studies of magma-hydrothermal systems, geothermal reservoirs and some ore deposits, to obtain highly accurate and precise data for this ternary system. These experiments are conducted using a double capsule technique. An excess of NaCl is placed in an inner Pt capsule, which is crimped shut and placed in an outer capsule containing H{sub 2}O and CO{sub 2}. During the experiment NaCl dissolves out of the inner capsule, and is deposited in the outer capsule during the quench. After the experiment the capsule is opened, and the amount of NaCl remaining in the inner capsule determined by dissolution. The difference between the initial and final amounts of NaCl in the inner capsule yields the solubility of NaCl at the P-T conditions of the experiment. At 500 C data from these experiments suggest that the vapor comer of the three-phase field lies near X(H{sub 2}O) = 0.760, X(NaCl) = 0.065, which …
Date:
January 9, 2001
Creator:
Anovitz, L.M.
Object Type:
Article
System:
The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Tuesday, January 9, 2001
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 9, 2001
Creator:
Bush, Kent
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
AN HISTORICAL OVERVIEW OF THE IMPORTANCE OF THE WEAK DECAY OF HYPERNUCLEI
Weak decay of hypernuclei, first cousin to the {beta}-decay of conventional, nonstrange nuclei, was initially observed in the 1950s. Pionic decay rates have proven a challenge--to reconcile nuclear decay rates with that of free {lambda} decay. Pauli blocking of the decay nucleon plays an important role. Nonmesonic decay provides our only practical means of exploring the four-fermion, strangeness-changing N{Lambda} {yields} NN weak interaction. The N{Lambda}{rho} vertex can be investigated in no other way. The large momentum transfer in the nonmesonic decay process suggests a means to probe short distance aspects of the interaction, possibly revealing baryon substructure effects. Whether the {Delta}I = 1/2 rule, which governs free {Lambda} decay, also applies to the nonmesonic decay process remains an open question. The free {Lambda} does not decay by emission of a {pi}{sup +}; the {pi}{sup +} decay of {sup 4}He is a puzzle. Finally, the weak decay of strangeness -2 hypernuclei is an important topic, because the pionic decay process is central to current efforts to seek and identify {Lambda}{Lambda} hypernuclei.
Date:
January 9, 2001
Creator:
GIBSON, B. F.
Object Type:
Article
System:
The UNT Digital Library
House Apportionment 2000: States Gaining, Losing, and on the Margin1
This report provides figures regarding the population of the 50 states in 2000, which is 281,424,177, a figure 13.4% greater than in 1990.
Date:
January 9, 2001
Creator:
Crocker, Royce
Object Type:
Report
System:
The UNT Digital Library
The Influence of Fold and Fracture Development on Reservoir Behavior of the Lisburne Group of Northern Alaska
The objectives of this study were to develop a better understanding of four major aspects of the Lisburne: (1) The geometry and kinematics of detachment folds and their truncation by thrust faults, (2) The influence of folding and lithostratigraphy on fracture patterns, (3) Lithostratigraphy and its influence on folding, faulting, fracturing, and reservoir characteristics, and (4) The influence of lithostratigraphy and deformation on fluid flow.
Date:
January 9, 2001
Creator:
Wallace, W. K.; Hanks, C. L.; Whalen, Michael T.; Jensen, J.; Atkinson, P. K. & Brinton, J. S.
Object Type:
Report
System:
The UNT Digital Library
Legislative Research in Congressional Offices: A Primer
This report discusses the process of conducting legislative research: deciding the scope, collecting the information and evaluating sources. Members of Congress need many kinds of information and analysis to support their legislative, oversight, and representational work, including both quick facts, or information to improve their understanding of a complex set of issues.
Date:
January 9, 2001
Creator:
Wellborn, Clay H. & Kolakowski, Michael
Object Type:
Report
System:
The UNT Digital Library
Marine Mammal Protection Act: Reauthorization Issues for the 107th Congress
This report discusses the issues likely to be raised during any reauthorization debate, the reasons behind them, and possible proposals that could be offered to address these concerns.
Date:
January 9, 2001
Creator:
Buck, Eugene H.
Object Type:
Report
System:
The UNT Digital Library
Modeling Grid-Connected Hybrid Electric Vehicles Using ADVISOR
Provides an overview on the use of ADVISOR for modeling plug-in hybrid electric vehicles.
Date:
January 9, 2001
Creator:
Markel, T. & Wipke, K.
Object Type:
Presentation
System:
The UNT Digital Library
Multiscale modeling of dislocation processes in BCC tantalum: bridging atomistic and mesoscale simulations
Plastic deformation in bcc metals at low temperatures and high-strain rates is controlled by the motion of a/2<111> screw dislocations, and understanding the fundamental atomistic processes of this motion is essential to develop predictive multiscale models of crystal plasticity. The multiscale modeling approach presented here for bcc Ta is based on information passing, where results of simulations at the atomic scale are used in simulations of plastic deformation at mesoscopic length scales via dislocation dynamics (DD). The relevant core properties of a/2<111> screw dislocations in Ta have been obtained using quantum-based interatomic potentials derived from model generalized pseudopotential theory and an ab-initio data base together with an accurate Green's-function simulation method that implements flexible boundary conditions. In particular, the stress-dependent activation enthalpy for the lowest-energy kink-pair mechanism has been calculated and fitted to a revealing analytic form. This is the critical quantity determining dislocation mobility in the DD simulations, and the present activation enthalpy is found to be in good agreement with the previous empirical form used to explain the temperature dependence of the yield stress.
Date:
January 9, 2001
Creator:
Yang, L H; Tang, M & Moriarty, J A
Object Type:
Article
System:
The UNT Digital Library
[News Clip: Guana reax]
Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date:
January 9, 2001, 5:00 p.m.
Creator:
KXAS-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library