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STATUS OF THE EBIS PROJECT AT BROOKHAVEN.
None
Date:
August 21, 2006
Creator:
ALESSI, J.; BARTON, D.; BEEBE, E. & AL., ET
Object Type:
Article
System:
The UNT Digital Library
Science-Driven Network Requirements for ESnet
The Energy Sciences Network (ESnet) is the primary providerof network connectivity for the US Department of Energy Office ofScience, the single largest supporter of basic research in the physicalsciences in the United States. In support of the Office of Scienceprograms, ESnet regularly updates and refreshes its understanding of thenetworking requirements of the instruments, facilities and scientiststhat it serves. This focus has helped ESnet to be a highly successfulenabler of scientific discovery for over 20 years. In August, 2002 theDOE Office of Science organized a workshop to characterize the networkingrequirements for Office of Science programs. Networking and middlewarerequirements were solicited from a representative group of scienceprograms. The workshop was summarized in two documents the workshop finalreport and a set of appendixes. This document updates the networkingrequirements for ESnet as put forward by the science programs listed inthe 2002 workshop report. In addition, three new programs have beenadded. Theinformation was gathered through interviews with knowledgeablescientists in each particular program or field.
Date:
February 21, 2006
Creator:
Adams, Paul; Canon, Shane; Carter, Steven; Draney, Brent; Greenwald, Martin; Hodges, Jason et al.
Object Type:
Report
System:
The UNT Digital Library
Modeling the Effects of Crevice Former, Particulates , and the Evolving Surface Profile in Crevice Corrosion
Crevice corrosion may initiate in confined regions due to transport limitations, followed by an accumulation of a highly corrosive chemistry, capable of dissolving the metal. The metal and the crevice former surface roughness, the presence of particulates under the crevice former and the accumulation of solid corrosion products at the corroding site would significantly affect the current and potential distribution at the anode by increasing the ohmic potential drop. Most crevice corrosion models focus on a smooth walled crevice of uniform gap and do not account for the changing profile after crevice corrosion has been initiated. In this work we analyze the crevice (anodic) region and apply current and potential distribution models to examine the effects of the perturbed surface topography. The analysis focuses on three related issues: (1) the effects of surface roughness of the metal and the crevice former, (2) the effects of particulates under the crevice former, and (3) the evolution of the crevice profile with corrosion product accumulation at the active, anodic region.
Date:
December 21, 2006
Creator:
Agarwal, A. S.; Landau, U.; Shan, X. & Payer, J. H.
Object Type:
Report
System:
The UNT Digital Library
Separation of Carbon Dioxide from Flue Gas Using Ion Pumping
We are developing a new way of separating carbon dioxide from flue gas based on ionic pumping of carbonate ions dissolved in water. Instead of relying on large temperature or pressure changes to remove carbon dioxide from solvent used to absorb it from flue gas, the ion pump increases the concentration of dissolved carbonate ion in solution. This increases the overlying vapor pressure of carbon dioxide gas, which can be removed from the downstream side of the ion pump as a nearly pure gas. This novel approach to increasing the concentration of the extracted gas permits new approaches to treating flue gas. The slightly basic water used as the extraction medium is impervious to trace acid gases that destroy existing solvents, and no pre-separation is necessary. The simple, robust nature of the process lends itself to small separation plants. Although the energy cost of the ion pump is significant, we anticipate that it will be compete favorably with the current 35% energy penalty of chemical stripping systems in use at power plants. There is the distinct possibility that this simple method could be significantly more efficient than existing processes.
Date:
April 21, 2006
Creator:
Aines, R.; Bourcier, W. L. & Johnson, M. R.
Object Type:
Article
System:
The UNT Digital Library
Chemical Depth Profiling from Neutron Reflectometry
The material profile of a thin film can be analyzed by placing the film on a substrate and by sending a neutron beam onto it at various angles of incidence. Technically, the scattering length density of the film needs to be determined as a function of depth. A reflectometer is used to measure the amount of reflection (reflectivity) as a function of the angle of incidence. Mathematically, this is equivalent to sending the neutron beam onto the film at every energy but at a fixed angle of incidence. The film profile needs to be recovered from the measured reflectivity data. Unfortunately, the unique recovery is impossible, and many distinct unrelated profiles may correspond to the same reflectivity data. In our DOE/EPSCoR sponsored research, we have developed an analytical method to uniquely recover the profile of a thin film from the measured reflectivity data. We have shown that by taking reflectivity measurements with two different substrates, one can uniquely determine the film profile. Previously, it was known that one could uniquely recover the profile by taking reflectivity measurements with three different substrates, and our findings indicate that the same goal can be accomplished by using fewer measurements. At Mississippi State University …
Date:
March 21, 2006
Creator:
Aktosun, Tuncay
Object Type:
Report
System:
The UNT Digital Library
Living As a Family In the Lord - Spousal Interpersonal Concepts and Techniques
Lecture given Tuesday, February 21, 2006, 8:30 AM at Abilene Christian University: "How can today's families live out Paul's instruction for marriage and parenting in a postmodern world? This class will examine healthy habits for families in light of both the witness of Scripture and current theories."
Date:
February 21, 2006
Creator:
Alaniz, Armando
Object Type:
Sound
System:
The Portal to Texas History
Timpson & Tenaha News (Timpson, Tex.), Vol. 21, No. 38, Ed. 1 Thursday, September 21, 2006
Weekly newspaper from Timpson, Texas that includes local, state, and national news along with advertising.
Date:
September 21, 2006
Creator:
Alexander, Nancy
Object Type:
Newspaper
System:
The Portal to Texas History
Timpson & Tenaha News (Timpson, Tex.), Vol. 21, No. 51, Ed. 1 Thursday, December 21, 2006
Weekly newspaper from Timpson, Texas that includes local, state, and national news along with advertising.
Date:
December 21, 2006
Creator:
Alexander, Nancy
Object Type:
Newspaper
System:
The Portal to Texas History
Charm Spectroscopy at BaBar
In this note we present results on charmed hadron decays recently obtained from data recorded with the BABAR detector at the Stanford Linear Accelerator Center (SLAC) PEP-II B-Factory.
Date:
April 21, 2006
Creator:
Altenburg, D. & U., /Dortmund
Object Type:
Article
System:
The UNT Digital Library
Metal Plasmas for the Fabrication of Nanostructures
A review is provided covering metal plasma production, theenergetic condensation of metal plasmas, and the formation ofnanostructures using such plasmas. Plasma production techniques includepulsed laser ablation, filtered cathodic arcs, and various forms ofionized physical vapor deposition, namely magnetron sputtering withionization of sputtered atoms in radio frequency discharges,self-sputtering, and high power impulse magnetron sputtering. Thediscussion of energetic condensation focuses on the control of kineticenergy by biasing and also includes considerations of the potentialenergy and the processes occurring at subplantation and implantation. Inthe final section on nanostructures, two different approaches arediscussed. In the top-down approach, the primary nanostructures arelithographically produced and metal plasma is used to coat or filltrenches and vias. Additionally, multilayers with nanosize periods(nanolaminates) can be produced. In the bottom-up approach, thermodynamicforces are used to fabricate nanocomposites and nanoporous materials bydecomposition and dealloying.
Date:
September 21, 2006
Creator:
Anders, Andre
Object Type:
Article
System:
The UNT Digital Library
That You Might Believe - The Gospel of John and the Trinity
Lecture given Tuesday, February 21, 2006, 9:45 AM at Abilene Christian University: "In many ways, the themes of John's gospel are unique and compelling. Three theologians read the Gospel of John to see what it has to say about truth, trinity and salvation."
Date:
February 21, 2006
Creator:
Aquino, Frederick; Carter, Kelly & Hamilton, Rex
Object Type:
Sound
System:
The Portal to Texas History
Prayer - Powerful and Problematic
Lecture given Tuesday, February 21, 2006, 9:45 AM at Abilene Christian University: "In prayer, we encounter the powerful presence of God. But prayer also presents some of the most perplexing issues related to faith. How then should we pray?"
Date:
February 21, 2006
Creator:
Ash, Tony
Object Type:
Sound
System:
The Portal to Texas History
Properties of Ellipticity Correlation with Atmospheric Structure from Gemini South
Cosmic shear holds great promise for a precision independent measurement of {Omega}{sub m}, the mass density of the universe relative to the critical density. The signal is expected to be weak, so a thorough understanding of systematic effects is crucial. An important systematic effect is the atmosphere: shear power introduced by the atmosphere is larger than the expected signal. Algorithms exist to extract the cosmic shear from the atmospheric component, though a measure of their success applied to a range of seeing conditions is lacking. To gain insight into atmospheric shear, Gemini South imaging in conjunction with ground condition and satellite wind data were obtained. We find that under good seeing conditions Point-Spread-Function (PSF) correlations persist well beyond the separation typical of high-latitude stars. Under these conditions, ellipticity residuals based on a simple PSF interpolation can be reduced to within a factor of a few of the shot-noise induced ellipticity floor. We also find that the ellipticity residuals are highly correlated with wind direction. Finally, we correct stellar shapes using a more sophisticated procedure and generate shear statistics from stars. Under all seeing conditions in our data set the residual correlations lie everywhere below the target signal level. For good …
Date:
December 21, 2006
Creator:
Asztalos, S. J.; Treadway, T.; de Vries, W. H.; Rosenberg, L. J.; Burke, D.; Claver, C. et al.
Object Type:
Article
System:
The UNT Digital Library
Together Again - Restoring Unity in Christ After a Century of Separation
Lecture given Tuesday, February 21, 2006, 9:45 AM at Abilene Christian University: "Our heritage was once known as a unity movement of people who wanted to be Christians only. Somewhere along the way that goal was lost. Can it be recaptured? Two preachers from different streams or our movement think it can, and think the time to say and do so is now."
Date:
February 21, 2006
Creator:
Atchley, Rick & Russell, Bob
Object Type:
Sound
System:
The Portal to Texas History
Restoration Unity Forum - The Biblical Mandate for Unity - How Can We Live It Out?
Lecture given Tuesday, February 21, 2006, 3:15 PM at Abilene Christian University: "No one would deny the importance placed in Scripture on the unity of Christ's followers. Yet the reality of division is stark. How can churches concerned with fulfilling Christ's prayer for unity actually live within it? A panel of leaders will pursue this important question."
Date:
February 21, 2006
Creator:
Atchley, Rick; Barrett, Bryan; Burton, Sue; DeWelt, Chris; Garrett, Leroy; Knowles, Victor et al.
Object Type:
Sound
System:
The Portal to Texas History
Measurement of the D+ -> pi+pi0 and D+ -> K+pi0Branching Fractions
We present measurements of the branching fractions for the Cabbibo suppressed decays D{sup +} {yields} {pi}{sup +}{pi}{sup 0} and D{sup +} {yields} K{sup +}{pi}{sup 0} based on a data sample corresponding to an integrated luminosity of 124.3 fb{sup -1}. The data were taken with the BABAR detector at the PEP-II B Factory operating on and near the {Upsilon}(4S) resonance. We find {Beta}(D{sup +} {yields} {pi}{sup +}{pi}{sup 0}) = (1.25 {+-} 0.10 {+-} 0.09 {+-} 0.04) x 10{sup -3} and {Beta}(D{sup +} {yields} K{sup +}{pi}{sup 0}) = (2.52 {+-} 0.47 {+-} 0.25 {+-} 0.08) x 10{sup -4}, where the first uncertainty is statistical, the second systematic and the last error is due to the uncertainties in the absolute branching fraction scale for D{sup +} mesons. This represents the first observation of the doubly Cabibbo-suppressed D{sup +} {yields} K{sup +}{pi}{sup 0} decay mode and a new measurement of the D{sup +} {yields} {pi}{sup +}{pi}{sup 0} branching fraction.
Date:
July 21, 2006
Creator:
Aubert, B.
Object Type:
Article
System:
The UNT Digital Library
Imagine a Marriage… - The Marriage That Walks on Water (Matthew 14:29)
Lecture given Tuesday, February 21, 2006, 9:45 AM at Abilene Christian University: "What if we could use some of the pictures of the ministry of Jesus to shape how we view our marriages? Beyond rules and roles, this class hopes that we can see our marriages in the stories of Jesus."
Date:
February 21, 2006
Creator:
Barcenas, Ignacio
Object Type:
Sound
System:
The Portal to Texas History
Purple Computational Environment With Mappings to ACE Requirements for the General Availability User Environment Capabilities
Purple is an Advanced Simulation and Computing (ASC) funded massively parallel supercomputer located at Lawrence Livermore National Laboratory (LLNL). The Purple Computational Environment documents the capabilities and the environment provided for the FY06 LLNL Level 1 General Availability Milestone. This document describes specific capabilities, tools, and procedures to support both local and remote users. The model is focused on the needs of the ASC user working in the secure computing environments at Los Alamos National Laboratory, Lawrence Livermore National Laboratory, and Sandia National Laboratories, but also documents needs of the LLNL and Alliance users working in the unclassified environment. Additionally, the Purple Computational Environment maps the provided capabilities to the Trilab ASC Computing Environment (ACE) Version 8.0 requirements. The ACE requirements reflect the high performance computing requirements for the General Availability user environment capabilities of the ASC community. Appendix A lists these requirements and includes a description of ACE requirements met and those requirements that are not met for each section of this document. The Purple Computing Environment, along with the ACE mappings, has been issued and reviewed throughout the Tri-lab community.
Date:
August 21, 2006
Creator:
Barney, B. & Shuler, J.
Object Type:
Report
System:
The UNT Digital Library
Looking Through the Eyes of Unity - How We Have Seen You and How We See You Know
Lecture given Tuesday, February 21, 2006, 2:00 PM at Abilene Christian University: "The events of the division in the Stone-Campbell Movement influenced the way we see each other. Often these views were caricatures that were intentionally negative in their portrayals. Can we move beyond these negative portrayals?"
Date:
February 21, 2006
Creator:
Barrett, Bryan & Knowles, Victor
Object Type:
Sound
System:
The Portal to Texas History
Will the Grandkids Be in the Church? - One Family's Inter-generational Discussion About Church and Faith
Lecture given Tuesday, February 21, 2006, 2:00 PM at Abilene Christian University: "Why are so many of our young people leaving our churches? In this session, three generations of a "CofC" family explore questions like these, and in doing so, explore the dynamics of tradition, commitment, truth, inheritance, love, trust and faith."
Date:
February 21, 2006
Creator:
Barton, John D.; Barton, Sara; Barton, John M.; Barton, Mary; Powell, Cynthia & Powell, Greg
Object Type:
Sound
System:
The Portal to Texas History
Undulator Background in the Final Focus Test Beam Experiment with Polarized Positrons
In the proposed E-166 experiment at SLAC, 50 GeV electrons pass through a helical undulator, and produce circularly polarized photons, which interact with a tungsten target and generate longitudinally polarized positrons. The background is an important issue for an experiment under consideration. To address this issue, simulations were performed with the code GEANT3 to model the production of secondary particles from high-energy electrons hitting an undulator. The energy density of photons generated at the target has been analyzed. Results of the simulations are presented and discussed.
Date:
September 21, 2006
Creator:
Batygin, Yuri K.
Object Type:
Article
System:
The UNT Digital Library
[Norval Pohl shakes hands with Moot Court team]
Photograph of UNT President Norval Pohl shaking hands with members of the Moot Court team as part of the 2006 Honors Day ceremony. Pohl can be seen on the left side of the photograph, facing a row of students to the right. He is shaking hands with a young woman and appears to be speaking.
Date:
April 21, 2006
Creator:
Baugh, Brian
Object Type:
Photograph
System:
The UNT Digital Library
[Norval Pohl speaks at 2006 Honors Day celebration]
Photograph of UNT President Norval Pohl speaking at the Honors Day celebration in 2006. Pohl can be seen standing behind a podium on the left side of the photograph, facing to the right of the camera. He is gesturing with his right hand. A floral bouquet is visible next to the podium in the bottom right corner of the photograph.
Date:
April 21, 2006
Creator:
Baugh, Brian
Object Type:
Photograph
System:
The UNT Digital Library
[UNT faculty member speaks at 2006 Honors Day celebration]
Photograph of a member of the UNT faculty speaking at the Honors Day celebration in 2006. The man can be seen standing behind a podium on the left side of the photograph, looking down. Celia Williamson, Deputy Provost and Dean of Undergraduate Studies at UNT, is sitting among students and other faculty members in the background. They are all wearing caps and gowns.
Date:
April 21, 2006
Creator:
Baugh, Brian
Object Type:
Photograph
System:
The UNT Digital Library