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Accurate wavelength measurements and modeling of FeXV to FeXIX spectra recorded in high density plasmas between 13.5 to 17 A.

Description: Iron spectra have been recorded from plasmas created at three different laser plasma facilities, the Tor Vergata University laser in Rome (Italy), the Hercules laser at ENEA in Frascati (Italy), and the Compact Multipulse Terawatt (COMET) laser at LLNL in California (USA). The measurements provide a means of identifying dielectronic satellite lines from FeXVI and FeXV in the vicinity of the strong 2p {yields} 3d transitions of FeXVII. About 80 {Delta}n {ge} 1 lines of FeXV (Mg-like) to FeXIX (O… more
Date: September 28, 2004
Creator: May, M.; Beiersdorfer, P.; Dunn, J.; Jordan, N.; Osterheld, A.; Faenov, A. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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The Adaptive Response in p53 Cancer Prone Mice: Loss of heterozygosity and Genomic Instability.

Description: The Trp53 gene is clearly associated with increased cancer risk. This, coupled with the broad understanding of its mode of action at the molecular level, makes this gene a good candidate for investigating the relationship between genetic risk factors and spontaneous cancer occurring in a mouse model exposed to low dose radiation. We have shown that adaptive response to chronic low dose radiation could increase cancer latency, as well as overall lifespan. To better understand the molecular proce… more
Date: September 28, 2004
Creator: Lavoie, Josée; Dolling, Jo-Anna; Mitchel, Ron E. J. & Boreham, Douglas R.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Advanced ST Plasma Scenario Simulations for NSTX

Description: Integrated scenario simulations are done for NSTX [National Spherical Torus Experiment] that address four primary milestones for developing advanced ST configurations: high {beta} and high {beta}{sub N} inductive discharges to study all aspects of ST physics in the high-beta regime; non-inductively sustained discharges for flattop times greater than the skin time to study the various current-drive techniques; non-inductively sustained discharges at high {beta} for flattop times much greater tha… more
Date: October 28, 2004
Creator: Kessel, C.E.; Synakowski, E.J.; Gates, D.A.; Harvey, R.W.; Kaye, S.M.; Mau, T.K. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Aging and Phase Stability of Waste Package Outer Barrier

Description: This report was prepared in accordance with ''Technical Work Plan for: Regulatory Integration Modeling and Analysis of the Waste Form and Waste Package'' (BSC 2004 [DIRS 171583]). This report provides information on the phase stability of Alloy 22, the current waste package outer barrier material. The goal of this model is to determine whether the single-phase solid solution is stable under repository conditions and, if not, how fast other phases may precipitate. The aging and phase stability m… more
Date: September 28, 2004
Creator: Wong, F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Analysis and Annotation of Nucleic Acid Sequence

Description: The aims of this project were to develop improved methods for computational genome annotation and to apply these methods to improve the annotation of genomic sequence data with a specific focus on human genome sequencing. The project resulted in a substantial body of published work. Notable contributions of this project were the identification of basecalling and lane tracking as error processes in genome sequencing and contributions to improved methods for these steps in genome sequencing. This… more
Date: July 28, 2004
Creator: States, David J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Analytical Modeling of Wave Generation by the Borehole OrbitalVibrator Source

Description: The orbital vibrator source (a fluid-coupled shear wave source) has many unique properties that are useful for cross-well, single-well, and borehole-to-surface imaging of both P- (compressional)and S-(shear) wave velocities of reservoir rocks. To this day, however, no standard models for this source have been established, and the mechanism of wave generation and the characteristics of wave field around the source are not well understood yet. In this article, we develop both two and three-dimens… more
Date: June 28, 2004
Creator: Nakagawa, Seiji & Daley, Thomas M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Application of the Extended Pairing Model to Heavy Isotopes

Description: The binding energies of three isotopic chains ({sup 100-130}Sn, {sup 152-181}Yb, and {sup 181-202}Pb) are studied using the extended pairing model. By using the exact solvability of the model one determines the pairing strength G(A) that reproduces the experimental binding energies. For these isotopic chains, log (G(A)) has a smooth systematic behavior. In particular, G(A) for the Pb and Sn isotopes can be described by a two parameter expression that is inversely proportional to the dimensional… more
Date: September 28, 2004
Creator: Gueorguiev, V G; Pan, F & Draayer, J P
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Assesing the Impacts of Local Deposition of Mercury Associated With Coal-Fired Power Plants.

Description: Mercury emissions from coal fired plants will be limited by regulations enforced by the Environmental Protection Agency. However, there is still debate over whether the limits should be on a plant specific basis or a nationwide basis. The nationwide basis allows a Cap and Trade program similar to that for other air pollutants. Therefore, a major issue is the magnitude and extent of local deposition. Computer modeling suggests that increased local deposition will occur on a local (2 to 10 Km) to… more
Date: March 28, 2004
Creator: Sullivan, T.; Bowerman, B.; Adams, J.; Ogeka, C.; Lipfert, F. & Renninger, S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Assessing the Mercury Health Risks Associated With Coal-Fired Power Plants: Issues in Atmospheric Processes.

Description: The rationale for regulating air emissions of mercury from U.S. coal-fired power plants largely depends on mathematical dispersion modeling, including the atmospheric chemistry processes that affect the partitioning of Hg emissions into elemental (Hg{sub 0}) and the reactive (RGM) forms that may deposit more rapidly near sources. This paper considers and evaluates the empirical support for this paradigm. We consider the extant experimental data at three spatial scales: local (< 30 km), regio… more
Date: March 28, 2004
Creator: Lipfert, F.; Sullivan, T. & Renninger, S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Barrier rf systems in synchrotrons

Description: Recently, many interesting applications of the barrier RF system in hadron synchrotrons have been realized. A remarkable example of this is the development of longitudinal momentum mining and implementation at the Fermilab Recycler for extraction of low emittance pbars for the Tevatron shots. At Fermilab, we have barrier RF systems in four different rings. In the case of Recycler Ring, all of the rf manipulations are carried out using a barrier RF system. Here, the author reviews various uses o… more
Date: June 28, 2004
Creator: Bhat, Chandra M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Beyond the standard model in many directions

Description: These four lectures constitute a gentle introduction to what may lie beyond the standard model of quarks and leptons interacting through SU(3){sub c} {direct_product} SU(2){sub L} {direct_product} U(1){sub Y} gauge bosons, prepared for an audience of graduate students in experimental particle physics. In the first lecture, I introduce a novel graphical representation of the particles and interactions, the double simplex, to elicit questions that motivate our interest in physics beyond the stand… more
Date: April 28, 2004
Creator: Quigg, Chris
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Branching ratios from B{sub s} and {Lambda}{sub b}{sup 0}

Description: CDF Run II relative branching ratio measurements for 65 pb{sup -1} of data in the channels B{sub s} {yields} D{sub s}{sup {-+}}{pi}{sup {-+}}, {Lambda} {sub b}{sup 0} {yields} {Lambda}{sub c}{sup {+-}}{pi}{sup {-+}} and B {yields} h{sup +}h{sup -} are presented. Further, an observation of B{sub s} {yields} K{sup {+-}} K{sup {-+}} and a measurement of A{sub CP} are presented.
Date: May 28, 2004
Creator: Martin, Matthew S.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Buoyancy-Driven Polymerase Chain Reaction (PCR) Devices

Description: Polymerase chain reaction (PCR) facilitates DNA detection by significantly increasing the concentration of specific DNA segments. A new class of PCR instruments uses a buoyancy-driven re-circulating flow to thermally cycle the DNA sample and benefits from reduced cycle times, low sample volumes, a miniaturized format, and low power consumption. This paper analyzes a specific buoyancy PCR device in a micro-channel ''race-track'' geometry to determine key parameters about PCR cycle times and othe… more
Date: September 28, 2004
Creator: Ness, K. D.; Wheeler, E. K.; Benett, W.; Stratton, P.; Christian, A.; Chen, A. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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BWR AXIAL PROFILE

Description: The purpose of this calculation is to develop axial profiles for estimating the axial variation in burnup of a boiling water reactor (BWR) assembly spent nuclear fuel (SNF) given the average burnup of an assembly. A discharged fuel assembly typically exhibits higher burnup in the center and lower burnup at the ends of the assembly. Criticality safety analyses taking credit for SNF burnup must account for axially varying burnup relative to calculations based on uniformly distributed assembly ave… more
Date: September 28, 2004
Creator: Huffer, J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Calculation of Radiative Corrections to E1 matrix elements in the Neutral Alkalis

Description: Radiative corrections to E1 matrix elements for ns-np transitions in the alkali metal atoms lithium through francium are evaluated. They are found to be small for the lighter alkalis but significantly larger for the heavier alkalis, and in the case of cesium much larger than the experimental accuracy. The relation of the matrix element calculation to a recent decay rate calculation for hydrogenic ions is discussed, and application of the method to parity nonconservation in cesium is described.
Date: September 28, 2004
Creator: Sapirstein, J & Cheng, K T
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Ceramic Interfaces

Description: During the period of this grant, we significantly advanced the understanding of stable surface amorphous films (SAFs), the existence of which was first postulated and then demonstrated under this program. SAFs are nanometer-thick amorphous films which are characterized by a self-selecting thickness, and a composition and structure distinct from the bulk phases with which they coexist. Importantly, they are present as an equilibrium, disordered phase below bulk solidus temperatures where all oth… more
Date: October 28, 2004
Creator: Chiang, Yet-Ming
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Certification of Completion of Level-2 Milestone 405: Deploy Next-Generation Data Management and Analysis Environment

Description: This summary report describes data management and visualization activities in the Advanced Simulation and Computing (ASC) program at Lawrence Livermore National Laboratory (LLNL). The report covers the period from approximately October 2003 to June 2004 and describes activities within the Visual Interactive Environment for Weapons Simulation (VIEWS) ASC program element. This report and the references herein are intended to document the completion of the following Level 2 Milestone from the ASC … more
Date: July 28, 2004
Creator: Long, J W; Frank, R J; Brugger, E & Louis, S
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Characterization of Solid Oxide Fuel Cell Components Using Electromagnetic Model-Based Sensors

Description: In this Phase I SBIR, the contractor demonstrated a number of capabilities of model-based sensors such as MWM sensors and MWM-Arrays. The key results include (1) porosity/microstructure characterization for anodes, (2) potential for cathode material characterization, (3) stress measurements in nickel and cobalt, and (4) potential for stress measurements in non-magnetic materials with a ferromagnetic layer. In addition, potential applications for manufacturing quality control of nonconductive la… more
Date: December 28, 2004
Creator: Zilberstein, Vladimir; Craven, Chris & Goldfine, Neil
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Cognitive tasks in information analysis: Use of event dwell time to characterize component activities

Description: Technology-based enhancement of information analysis requires a detailed understanding of the cognitive tasks involved in the process. The information search and report production tasks of the information analysis process were investigated through evaluation of time-stamped workstation data gathered with custom software. Model tasks simulated the search and production activities, and a sample of actual analyst data were also evaluated. Task event durations were calculated on the basis of millis… more
Date: September 28, 2004
Creator: Sanquist, Thomas F.; Greitzer, Frank L.; Slavich, Antoinette L.; Littlefield, Rik J.; Littlefield, Janis S. & Cowley, Paula J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Collisional Transport in a Low Aspect Ratio Tokamak -- Beyond the Drift Kinetic Formalism

Description: Calculations of collisional thermal and particle diffusivities in toroidal magnetic plasma confinement devices order the toroidal gyroradius to be small relative to the poloidal gyroradius. This ordering is central to what is usually referred to as neoclassical transport theory. This ordering is incorrect at low aspect ratio, where it can often be the case that the toroidal gyroradius is larger than the poloidal gyroradius. We calculate the correction to the particle and thermal diffusivities a… more
Date: January 28, 2004
Creator: Gates, D. A. & White, R. B.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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THE COLOR GLASS CONDENSATE: A SUMMARY OF KEY IDEAS AND RECENT DEVELOPMENTS.

Description: We summarize the theory and phenomenology of the Color Glass Condensate reviewed previously by E. Iancu and the author in hep-ph/0303204. In addition, we discuss some of the subsequent developments in the past year both in theory and in phenomenological applications.
Date: March 28, 2004
Creator: Venugopalan, R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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Community-Owned wind power development: The challenge of applying the European model in the United States, and how states are addressing that challenge

Description: Local farmers, towns, schools, and individual investors are, however, beginning to invest in wind power. With the help of state policy and clean energy fund support, new federal incentives, and creative local wind developers who have devised ownership structures that maximize the value of both state and federal support, community wind power is beginning to take a foothold in parts of the US, in particular the upper Midwest. The purpose of this report is to describe that foothold, as well as the… more
Date: March 28, 2004
Creator: Bolinger, Mark
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A Comparison of Digital Signal Extraction Techniques

Description: We compare the performance of two methods of digital filtering to detect a radioactive source moving past a gamma-ray sensor. The first method is the box-car filter, which is a standard method used in the detection of a moving radioactive source. The second method is the matched filter, which takes into account the variation in the number of photons absorbed in a gamma-ray sensor as a source moves past the sensor. We optimize both methods to detect a source moving at 5, 10, 15 and 20 mph, and t… more
Date: December 28, 2004
Creator: Cunningham, M. & Dowla, F.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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