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open access

Securing, Stabilizing, and Rebuilding Iraq: Key Issues for Congressional Oversight

Description: Other written product issued by the Government Accountability Office with an abstract that begins "As the United States reviews its plans to secure, stabilize, and rebuild Iraq, GAO has enclosed a series of issue papers for Congressional consideration in developing its oversight agenda for the 110th Congress and analyzing the President's revised strategy for Iraq. These papers are based on the continuing work of the U.S. Government Accountability Office and the 67 Iraq-related reports and testi… more
Date: January 9, 2007
Creator: United States. Government Accountability Office.
Partner: UNT Libraries Government Documents Department
open access

Theory and Fluid Simulations of Boundary Plasma Fluctuations

Description: Theoretical and computational investigations are presented of boundary plasma microturbulence that take into account important effects of the geometry of diverted tokamaks--in particular, the effect of x-point magnetic shear and the termination of field lines on divertor plates. We first generalize our previous 'heuristic boundary condition' which describes, in a lumped model, the closure of currents in the vicinity of the x-point region to encompass three current-closure mechanisms. We then us… more
Date: January 9, 2007
Creator: Cohen, R. H.; LaBombard, B.; LoDestro, L. L.; Rognlien, T. D.; Ryutov, D. D.; Terry, J. L. et al.
Partner: UNT Libraries Government Documents Department
open access

Characterization of a mixed salt of 1-hydroxy-pyridin-2-one Pu(IV)complexes

Description: Most expert analyses of the projected world energy needs show utilization of nuclear energy will be essential for the next few decades, and hence the need to support this technology grows. But as one measure of the supporting science base of this field, as of December 2006, only 25 Pu containing structures were in the Cambridge Structural Database, as compared to 21,807 for Fe. A comparison of the rate of addition to this knowledge base reveals that approximately 500 Fe structures are registere… more
Date: January 9, 2007
Creator: Gorden, Anne E.V.; Xu, Jide; Szigethy, Geza; Oliver, Allen; Shuh,David K. & Raymond, Kenneth N.
Partner: UNT Libraries Government Documents Department
open access

Monitoring Dynamic Protein Expression in Single Living E. Coli. Bacterial Cells by Laser Tweezers Raman Spectroscopy

Description: Laser tweezers Raman spectroscopy (LTRS) is a novel, nondestructive, and label-free method that can be used to quantitatively measure changes in cellular activity in single living cells. Here, we demonstrate its use to monitor changes in a population of E. coli cells that occur during overexpression of a protein, the extracellular domain of myelin oligodendrocyte glycoprotein (MOG(1-120)) Raman spectra were acquired of individual E. coli cells suspended in solution and trapped by a single tight… more
Date: January 9, 2007
Creator: Chan, J W; Winhold, H; Corzett, M H; Ulloa, J M; Cosman, M; Balhorn, R et al.
Partner: UNT Libraries Government Documents Department
open access

Thermal effects in plasma-based accelerators

Description: Finite plasma temperature can modify the structure of thewake field, reduce the wave-breaking field, and lead to self-trappedelectrons, which can degrade the electron bunch quality in a plasma-basedaccelerator. A relativistic warm fluid theory is used to describe theplasma temperature evolution and alterations to the structure of anonlinear periodic wave exited in a warm plasma. The trapping thresholdfor a plasma electron and the fraction of electrons trapped from athermal distribution are exam… more
Date: January 9, 2007
Creator: Esarey, E.; Schroeder, C. B.; Michel, E.; Shadwick, B. A.; Geddes, C. G. R. & Leemans, W. P.
Partner: UNT Libraries Government Documents Department
open access

Atomic-volume variations of (alpha)-Pu alloyed with Al, Ga, and Am from first-principles theory

Description: First-principles methods are employed to calculate the ground-state atomic densities (or volumes) of {alpha}-Pu alloyed with Al, Ga, and Am. Three configurations for the alloying atom are considered. (1) It is located at the most open and energetically most favorably site. (2) It is located in the least open site. (3) It is randomly distributed within the {alpha}-Pu matrix. When alloyed with Al or Ga, {alpha}-Pu behaves similarly, it expands considerably for configurations (2) and (3), while fo… more
Date: January 9, 2007
Creator: Soderlind, P; Landa, A & Wolfer, W G
Partner: UNT Libraries Government Documents Department
open access

Child Care Issues in the 109th Congress

Description: This report discusses the federal support for child care in several forms, ranging from grant programs to tax provisions. It also points out the federal child care-related programs and tax provisions.
Date: January 9, 2007
Creator: Gish, Melinda
Partner: UNT Libraries Government Documents Department
open access

[TDNA's Frank W. Mayborn Award for Community Leadership]

Description: Texas Daily Newspaper Association's Frank W. Mayborn Award for Community Leadership history. The Mayborn Award for Community Leadership is awarded annually by Texas Daily Newspaper Association to a publisher or newspaper executive who contributed most significantly to the society during the past year. The criteria for the nominee should exhibit outstanding and exemplary leadership which reflect credit upon the newspaper business. The award recipient for 2006 was Nelson Clyde IV (mis-identified … more
Date: January 9, 2007
Creator: Texas Daily Newspaper Association
Partner: UNT Libraries Special Collections
open access

[TDNA's Pat Taggart Award for Newspaper Leader of the Year]

Description: Texas Daily Newspaper Association's Pat Taggart Award for Newspaper Leader of the Year history. The Pat Taggart Award are given to the recipients who are providing outstanding service/accomplishments to their newspaper, the newspaper business, and their community. The 2005 recipient of the Pat Taggart Award goes to Wesley R. Turner of the Fort Worth Star-Telegram. The remaining document details all the recipients of the award as far back as 1977.
Date: January 9, 2007
Creator: Texas Daily Newspaper Association
Partner: UNT Libraries Special Collections
open access

Search for D0-anti-D0 Mixing with the BaBar Experiment

Description: The results of searches for D{sup 0}-{bar D}{sup 0} mixing in the decays D{sup 0} {yields} K{sup +}{pi}{sup -}{pi}{sup 0} and D{sup 0} {yields} K{sup +}{pi}{sup -}{pi}{sup +}{pi}{sup -}, using 230 fb{sup -1} of e{sup +}e{sup -} collisions collected from the BABAR detector at the PEP-II storage ring at SLAC, are presented. The combination of results from these analyses yields a value for the time-integrated mixing rate R{sub M} = (0.020{sub -0.010}{sup +0.011}(stat.))%, and an upper limit R{sub … more
Date: January 9, 2007
Creator: Wilson, Michael G.
Partner: UNT Libraries Government Documents Department
open access

Cooperative fault-tolerant distributed computing U.S. Department of Energy Grant DE-FG02-02ER25537 Final Report

Description: The Harness project has developed novel software frameworks for the execution of high-end simulations in a fault-tolerant manner on distributed resources. The H2O subsystem comprises the kernel of the Harness framework, and controls the key functions of resource management across multiple administrative domains, especially issues of access and allocation. It is based on a “pluggable” architecture that enables the aggregated use of distributed heterogeneous resources for high performance computi… more
Date: January 9, 2007
Creator: Sunderam, Vaidy S.
Partner: UNT Libraries Government Documents Department
open access

PILOT-SCALE HYDRAULIC TESTING OF RESORCINOL FORMALDEHYDE ION EXCHANGE RESIN

Description: Savannah River National Laboratory (SRNL) performed pilot-scale hydraulic/chemical testing of spherical resorcinol formaldehyde (RF) ion exchange (IX) resin for the River Protection Project Hanford Tank Waste Treatment & Immobilization Plant (WTP) Project. The RF resin cycle testing was conducted in two pilot-scale IX columns, 1/4 and 1/2 scale. A total of twenty-three hydraulic/chemical cycles were successfully completed on the spherical RF resin. Seven of the cycles were completed in the 12-i… more
Date: January 9, 2007
Creator: Adamson, D
Partner: UNT Libraries Government Documents Department
open access

Heightened sense for sensing: recent advances in pathogen immunoassay sensing platforms

Description: As part of its own defense mechanism, most bacteria have developed an innate ability to enable toxic secretion to ward off potential predators or invaders. However, this naturally occurring process has been abused since over production of the bacteria's toxin molecules could render them as potential bioweapons. As these processes (also known as ''black biology'') can be clandestinely performed in a laboratory, the threat of inflicting enormous potential damage to a nation's security and economy… more
Date: January 9, 2007
Creator: Fischer, N; Tarasow, T & Tok, J B
Partner: UNT Libraries Government Documents Department
open access

A COMPARISON OF CHALLENGES ASSOCIATED WITH SLUDGE REMOVAL & TREATMENT & DISPOSAL AT SEVERAL SPENT FUEL STORAGE LOCATIONS

Description: Challenges associated with the materials that remain in spent fuel storage pools are emerging as countries deal with issues related to storing and cleaning up nuclear fuel left over from weapons production. The K Basins at the Department of Energy's site at Hanford in southeastern Washington State are an example. Years of corrosion products and piles of discarded debris are intermingled in the bottom of these two pools that stored more 2,100 metric tons (2,300 tons) of spent fuel. Difficult, co… more
Date: January 9, 2007
Creator: PERES, M.W.
Partner: UNT Libraries Government Documents Department
open access

Using Uncertainty to Guide Characterization, Closure and Long-term Management of an Underground Nuclear Test Site

Description: No feasible remediation technology has been identified for nuclear test cavities such that site management and institutional controls must be relied on to minimize the possibility of public exposure to these legacies of the Cold War. The most common exposure pathway of concern is migration of radionuclides with groundwater. Prediction of flow and transport behavior in the sparsely observed subsurface environment is inherently uncertain, but developing effective management strategies demands suc… more
Date: January 9, 2007
Creator: Chapman, J.; Pohll, G.; Hassan, A. & Pohlmann, K.
Partner: UNT Libraries Government Documents Department
open access

The MC21 Monte Carlo Transport Code

Description: MC21 is a new Monte Carlo neutron and photon transport code currently under joint development at the Knolls Atomic Power Laboratory and the Bettis Atomic Power Laboratory. MC21 is the Monte Carlo transport kernel of the broader Common Monte Carlo Design Tool (CMCDT), which is also currently under development. The vision for CMCDT is to provide an automated, computer-aided modeling and post-processing environment integrated with a Monte Carlo solver that is optimized for reactor analysis. CMCDT … more
Date: January 9, 2007
Creator: Sutton TM, Donovan TJ, Trumbull TH, Dobreff PS, Caro E, Griesheimer DP, Tyburski LJ, Carpenter DC, Joo H
Partner: UNT Libraries Government Documents Department
open access

Rayleigh-Taylor instability-induced mixing: initial conditions modeling, three-dimensional simulations and comparisons with experiment

Description: A spectral/compact finite-difference method with a third-order Adams-Bashforth-Moulton time-evolution scheme is used to perform a direct numerical simulation (DNS) of Rayleigh-Taylor flow. The initial conditions are modeled by parameterizing the multi-mode velocity and density perturbations measured just off of the splitter plate in water channel experiments. Parameters in the DNS are chosen to match the experiment as closely as possible. The early-time transition from a weakly-nonlinear to a s… more
Date: January 9, 2007
Creator: Mueschke, N; Schilling, O & Andrews, M
Partner: UNT Libraries Government Documents Department
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