Errata Sheet for the Closure Report for Corrective Action Unit 528 (open access)

Errata Sheet for the Closure Report for Corrective Action Unit 528

Errata sheet for DOE/NV--1165, "Closure Report for Corrective Action Unit 528: Polychlorinated Biphenyls Contamination, Nevada Test Site, Nevada," Revision 0
Date: June 8, 2009
Creator: National Security Technologies, LLC
Object Type: Report
System: The UNT Digital Library
Fatigue Testing of Abrasive Water Jet Cut Titanium (open access)

Fatigue Testing of Abrasive Water Jet Cut Titanium

Battelle Memorial Institute as part of its U.S. Department of Energy (USDOE) Contract No. DE-AC05-76RL01830 to operate the Pacific Northwest National Laboratory (PNNL) provides technology assistance to qualifying small businesses in association with a Technology Assistance Program (TAP). Qualifying companies are eligible to receive a set quantity of labor associated with specific technical assistance. Having applied for a TAP agreement to assist with fatigue characterization of Abrasive Water Jet (AWJ) cut titanium specimens, the OMAX Corporation was awarded TAP agreement 09-02. This program was specified to cover dynamic testing and analysis of fatigue specimens cut from titanium alloy Ti-6%Al-4%V via AWJ technologies. In association with the TAP agreement, a best effort agreement was made to characterize fatigue specimens based on test conditions supplied by OMAX.
Date: June 8, 2009
Creator: Hovanski, Yuri; Dahl, Michael E. & Williford, Ralph E.
Object Type: Report
System: The UNT Digital Library
Geospatial Information and Geographic Information Systems (GIS): Current Issues and Future Challenges (open access)

Geospatial Information and Geographic Information Systems (GIS): Current Issues and Future Challenges

This report provides a primer on geospatial data and GIS and provides several examples of their use. The report discusses issues that may be of interest to Congress: sharing, coordination, and management of geospatial information, including examples of legislation. Finally, recommendations are included from several organizations for how to improve the coordination and management of geospatial information at the federal and state levels.
Date: June 8, 2009
Creator: Folger, Peter
Object Type: Report
System: The UNT Digital Library
A high-performance electron beam ion source (open access)

A high-performance electron beam ion source

At Brookhaven National Laboratory, a high current Electron Beam Ion Source (EBIS) has been developed as part of a new preinjector that is under construction to replace the Tandem Van de Graaffs as the heavy ion preinjector for the RHIC and NASA experimental programs. This preinjector will produce milliampere-level currents of essentially any ion species, with q/A {ge} 1/6, in short pulses, for injection into the Booster synchrotron. In order to produce the required intensities, this EBIS uses a 10A electron gun, and an electron collector designed to handle 300 kW of pulsed electron beam power. The EBIS trap region is 1.5 m long, inside a 5T, 2m long, 8-inch bore superconducting solenoid. The source is designed to switch ion species on a pulse-to-pulse basis, at a 5 Hz repetition rate. Singly-charged ions of the appropriate species, produced external to the EBIS, are injected into the trap and confined until the desired charge state is reached via stepwise ionization by the electron beam. Ions are then extracted and matched into an RFQ, followed by a short IH Linac, for acceleration to 2 MeV/A, prior to injection into the Booster synchrotron. An overview of the preinjector is presented, along with experimental …
Date: June 8, 2009
Creator: Alessi,J.; Beebe, E.; Bellavia, S.; Gould, O.; Kponou, A.; Lambiase, R. et al.
Object Type: Article
System: The UNT Digital Library
Honduran-U.S. Relations (open access)

Honduran-U.S. Relations

This report discusses the current state of Honduras, which is one of the Western Hemisphere's poorest countries and has a high poverty rate, high infant mortality rate, and a widespread HIV/AIDS epidemic. This report also discusses the relationship between the U.S. and Honduras, focusing on the countries' important trade partnership, the U.S. military presence in Honduras, and U.S. foreign aid.
Date: June 8, 2009
Creator: Meyer, Peter J. & Sullivan, Mark P.
Object Type: Report
System: The UNT Digital Library
Internet Domain Names: Background and Policy Issues (open access)

Internet Domain Names: Background and Policy Issues

None
Date: June 8, 2009
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Iraq: Post-Saddam Governance and Security (open access)

Iraq: Post-Saddam Governance and Security

This report discusses the current political and social climate of Iraq, specifically in regards to the influence of the U.S. military presence over recent years. This report addresses planned and possible future efforts under the Obama Administration, including the scheduled gradual troops withdrawal. Some U.S. officials believe that a U.S. military presence is needed beyond the scheduled August 31, 2010 date, by which point all U.S. troops will have been withdrawn. This report also discusses the continued tensions between various Iraqi sociocultural groups.
Date: June 8, 2009
Creator: Katzman, Kenneth
Object Type: Report
System: The UNT Digital Library
Low temperature front surface passivation of interdigitated back contact silicon heterojunction solar cell (open access)

Low temperature front surface passivation of interdigitated back contact silicon heterojunction solar cell

The interdigitated back contact silicon heterojunction (IBC-SHJ) solar cell requires a low temperature front surface passivation/anti-reflection structure. Conventional silicon surface passivation using SiO2 or a-SiNx is performed at temperature higher than 400°C, which is not suitable for the IBC-SHJ cell. In this paper, we propose a PECVD a-Si:H/a-SiNx:H/a-SiC:H stack structure to passivate the front surface of crystalline silicon at low temperature. The optical properties and passivation quality of this structure are characterized and solar cells using this structure are fabricated. With 2 nm a-Si:H layer, the stack structure exhibits stable passivation with effective minority carrier lifetime higher than 2 ms, and compatible with IBC-SHJ solar cell processing. A critical advantage of this structure is that the SiC allows it to be HF resistant, thus it can be deposited as the first step in the process. This protects the a-Si/c-Si interface and maintains a low surface recombination velocity.
Date: June 8, 2009
Creator: Shu, Brent; Das, Ujjwal; Jani, Omkar; Hegedus, Steve & Birkmire, Robert
Object Type: Article
System: The UNT Digital Library
The National Security Council: An Organizational Assessment (open access)

The National Security Council: An Organizational Assessment

The National Security Council (NSC) was established in 1947. This report describes the history of the NSC, how is structure and influence have varied over the years from one Administration to another, what its current structure and who its current members are, varying opinions as to what the role of the NSC should be, and future developments for the NSC.
Date: June 8, 2009
Creator: Best, Richard A., Jr.
Object Type: Report
System: The UNT Digital Library
ONGOING INVESTIGATION OF THE EFFECT THAT DRUGSTORE BEETLES HAVE ON CELOTEX ASSEMBLIES FOUND WITHIN RADIOACTIVE MATERIAL PACKAGINGS (open access)

ONGOING INVESTIGATION OF THE EFFECT THAT DRUGSTORE BEETLES HAVE ON CELOTEX ASSEMBLIES FOUND WITHIN RADIOACTIVE MATERIAL PACKAGINGS

During normal operations at the Department of Energy's Hanford Site in Hanford, WA, drugstore beetles were found within the fiberboard subassemblies of two 9975 Shipping Packages. The Department of Energy's Packaging Certification Program (EM-60) directed a thorough investigation to determine if the drugstore beetles were causing damage that would be detrimental to the safety performance of the Celotex. The Savannah River National Laboratory is continuing to conduct the investigation with entomological expertise being provided by Clemson University. The outcome from the investigation conducted over the previous year was that no discernible damage had been caused by the drugstore beetles. One of the two packages has been essentially untouched over the past year and has only been opened to visually inspect for additional damage. This paper will provide details and results of the ongoing investigation of that package.
Date: June 8, 2009
Creator: Loftin, B.
Object Type: Article
System: The UNT Digital Library
Phase Transition Signature Results from PHENIX (open access)

Phase Transition Signature Results from PHENIX

The PHENIX experiment has conducted searches for the QCD critical point with measurements of multiplicity fluctuations, transverse momentum fluctuations, event-by-event kaon-to-pion ratios, elliptic flow, and correlations. Measurements have been made in several collision systems as a function of centrality and transverse momentum. The results do not show significant evidence of critical behavior in the collision systems and energies studied, although several interesting features are discussed.
Date: June 8, 2009
Creator: Mitchell, J.e. & Collaboration, PHENIX
Object Type: Article
System: The UNT Digital Library
Pipelining RDP Data to the "Taxomatic" - Final Report (open access)

Pipelining RDP Data to the "Taxomatic" - Final Report

Describes the development of a web-based tool for establishing and exploring prokaryotic taxonomies. The tool links to RDP-II data and is a a part of the RDP's web services.
Date: June 8, 2009
Creator: Lilburn, Timothy G.; Garrity, George M. & Cole, James R.
Object Type: Report
System: The UNT Digital Library
Potential luminosity improvement for low-energy RHIC operation with electron cooling (open access)

Potential luminosity improvement for low-energy RHIC operation with electron cooling

There is a strong interest in heavy-ion RHIC collisions in the energy range below the present RHIC injection energy, which is termed 'low-energy' operation. These collisions will help to answer one of the key questions in the field of QCD about the existence and location of a critical point on the QCD phase diagram. However, luminosity projections are relatively low for the lowest energy points of interest. Luminosity improvement can be provided with RHIC electron cooling at low beam energies. This report summarizes the expected luminosity improvements with electron cooling and various limitations.
Date: June 8, 2009
Creator: Fedotov,A.
Object Type: Article
System: The UNT Digital Library
Probing the Conformational Distributions of Sub-Persistence Length DNA (open access)

Probing the Conformational Distributions of Sub-Persistence Length DNA

We have measured the bending elasticity of short double-stranded DNA (dsDNA) chains through small-angle X-ray scattering from solutions of dsDNA-linked dimers of gold nanoparticles. This method, which does not require exertion of external forces or binding to a substrate, reports on the equilibrium distribution of bending fluctuations, not just an average value (as in ensemble FRET) or an extreme value (as in cyclization), and in principle provides a more robust data set for assessing the suitability of theoretical models. Our experimental results for dsDNA comprising 42-94 basepairs (bp) are consistent with a simple worm-like chain model of dsDNA elasticity, whose behavior we have determined from Monte Carlo simulations that explicitly represent nanoparticles and their alkane tethers. A persistence length of 50 nm (150 bp) gave a favorable comparison, consistent with the results of single-molecule force-extension experiments on much longer dsDNA chains, but in contrast to recent suggestions of enhanced flexibility at these length scales.
Date: June 8, 2009
Creator: Mastroianni, Alexander; Sivak, David; Geissler, Phillip & Alivisatos, Paul
Object Type: Article
System: The UNT Digital Library
R&D for a Soft X-Ray Free Electron Laser Facility (open access)

R&D for a Soft X-Ray Free Electron Laser Facility

Several recent reports have identified the scientific requirements for a future soft x-ray light source, and a high-repetition-rate free-electron laser (FEL) facility that is responsive to these requirements is now on the horizon. R&D in some critical areas is needed, however, to demonstrate technical performance, thus reducing technical risks and construction costs. Such a facility most likely will be based on a CW superconducting linear accelerator with beam supplied by a high-brightness, high-repetition-rate photocathode electron gun operating in CW mode, and on an array of FELs to which the accelerated beam is distributed, each operating at high repetition rate and with even pulse spacing. Dependent on experimental requirements, the individual FELs can be configured for either self-amplified spontaneous emission (SASE), seeded, or oscillator mode of operation, including the use of high-gain harmonic generation (HGHG), echo-enhanced harmonic generation (EEHG), harmonic cascade, or other configurations. In this White Paper we identify the overall accelerator R&D needs, and highlight the most important pre-construction R&D tasks required to value-engineer the design configuration and deliverables for such a facility. In Section 1.4 we identify the comprehensive R&D ultimately needed. We identify below the highest-priority requirements for understanding machine performance and reduce risk and costs at …
Date: June 8, 2009
Creator: Corlett, John; Attwood, David; Byrd, John; Denes, Peter; Falcone, Roger; Heimann, Phil et al.
Object Type: Report
System: The UNT Digital Library
Research Needs for Magnetic Fusion Energy Sciences. Report of the Research Needs Workshop (ReNeW) Bethesda, Maryland, June 8-12, 2009 (open access)

Research Needs for Magnetic Fusion Energy Sciences. Report of the Research Needs Workshop (ReNeW) Bethesda, Maryland, June 8-12, 2009

Nuclear fusion - the process that powers the sun - offers an environmentally benign, intrinsically safe energy source with an abundant supply of low-cost fuel. It is the focus of an international research program, including the ITE R fusion collaboration, which involves seven parties representing half the world's population. The realization of fusion power would change the economics and ecology of energy production as profoundly as petroleum exploitation did two centuries ago. The 21st century finds fusion research in a transformed landscape. The worldwide fusion community broadly agrees that the science has advanced to the point where an aggressive action plan, aimed at the remaining barriers to practical fusion energy, is warranted. At the same time, and largely because of its scientific advance, the program faces new challenges; above all it is challenged to demonstrate the timeliness of its promised benefits. In response to this changed landscape, the Office of Fusion Energy Sciences (OFES ) in the US Department of Energy commissioned a number of community-based studies of the key scientific and technical foci of magnetic fusion research. The Research Needs Workshop (ReNeW) for Magnetic Fusion Energy Sciences is a capstone to these studies. In the context of magnetic fusion …
Date: June 8, 2009
Creator: unknown
Object Type: Report
System: The UNT Digital Library
RHIC low-energy challenges and plans (open access)

RHIC low-energy challenges and plans

Future Relativistic Heavy Ion Collider (RHIC) runs, including a portion of FY10 heavy ion operations, will explore collisions at center of mass energies of 5-50 GeV/n (GeV/nucleon). Operations at these energies is motivated by the search for a possible QCD phase transition critical point. The lowest end of this energy range is nearly a factor of four below the nominal RHIC injection center of mass energy {radical}s = 19.6 GeV/n. There are several operational challenges in the RHIC low-energy regime, including harmonic number changes, small longitudinal acceptance, lowered magnet field quality, nonlinear orbit control, and luminosity monitoring. We report on the experience with these challenges during beam tests with gold beams in March 2008. This includes first operations at {radical}s = 9.18 GeV/n, first beam experience at {radical}s = 5 GeV/n, and luminosity projections for near-term operations.
Date: June 8, 2009
Creator: Satogata, T.; Ahrens, L.; Bai, M.; Brennan, J. M.; Bruno, D.; Butler, J. et al.
Object Type: Article
System: The UNT Digital Library
El Salvador: Political, Economic, and Social Conditions and U.S. Relations (open access)

El Salvador: Political, Economic, and Social Conditions and U.S. Relations

This report discusses the state of the El Salvadoran government and recently elected President Mauricio Funes. This report also discusses the relationship between El Salvador and the United States, notably U.S. efforts to restore democracy and initiate economic reform in El Salvador. This report also briefly addresses the effects of the current financial crisis on El Salvador's economy, poverty levels, and crime rates.
Date: June 8, 2009
Creator: Seelke, Clare Ribando & Meyer, Peter J.
Object Type: Report
System: The UNT Digital Library
Science & Technology Workshop Tank Waste Retrieval Technology Activities (open access)

Science & Technology Workshop Tank Waste Retrieval Technology Activities

None
Date: June 8, 2009
Creator: Saunders, S. A.
Object Type: Article
System: The UNT Digital Library
Thailand: Background and U.S. Relations (open access)

Thailand: Background and U.S. Relations

This report discusses the current political and economic state of Thailand, particularly in the wake of the September 2006 coup that displaced Prime Minister Thaksin Shinawatra and has resulted in continuing instability. This report also discusses the ongoing U.S.-Thai relationship, despite different policies in such areas as human rights.
Date: June 8, 2009
Creator: Chanlett-Avery, Emma
Object Type: Report
System: The UNT Digital Library
Transit Security Grant Program: DHS Allocates Grants Based on Risk, but Its Risk Methodology, Management Controls, and Grant Oversight Can Be Strengthened (open access)

Transit Security Grant Program: DHS Allocates Grants Based on Risk, but Its Risk Methodology, Management Controls, and Grant Oversight Can Be Strengthened

A letter report issued by the Government Accountability Office with an abstract that begins "From fiscal years 2006 through 2008, the Department of Homeland Security (DHS) has allocated about $755 million dollars to transit agencies through its Transit Security Grant Program (TSGP) to protect transit systems and the public from terrorist attacks. GAO was asked to evaluate the extent to which (1) TSGP funds are allocated and awarded based on risk; (2) DHS has allocated, awarded, and distributed TSGP grants in accordance with statutory deadlines and leading practices for collaborating agencies; and (3) DHS has evaluated the effectiveness of the TSGP and its investments. To address these objectives, GAO reviewed the TSGP risk model, fund allocation methodology and program documents, such as TSGP guidance, and interviewed DHS and transit officials, among other steps."
Date: June 8, 2009
Creator: United States. Government Accountability Office.
Object Type: Report
System: The UNT Digital Library
Assistance to Firefighters Program: Distribution of Fire Grant Funding (open access)

Assistance to Firefighters Program: Distribution of Fire Grant Funding

This report discusses the Assistance to Firefighters Grant (AFG) Program, also known as fire grants of the FIRE Act grant program, which provides federal grants directly to local fire departments and unaffiliated Emergency Medical Services (EMS) organizations to help address a variety of equipment, training, and other firefighter-related and EMS needs. This report also discusses the possible reauthorization of AFG and the related Staffing for Adequate Fire and Emergency Response Firefighters (SAFER) program.
Date: May 8, 2009
Creator: Kruger, Lennard G.
Object Type: Report
System: The UNT Digital Library
The Capitol Power Plant: Background and Greening Options (open access)

The Capitol Power Plant: Background and Greening Options

This report mainly discuss the Background and Greening Options of the Capitol Power Plant. Its impact on congressional operations are misunderstood.
Date: May 8, 2009
Creator: Straus, Jacob R.
Object Type: Report
System: The UNT Digital Library
Cars and Climate: What Can EPA Do to Control Greenhouse Gases from Mobile Sources? (open access)

Cars and Climate: What Can EPA Do to Control Greenhouse Gases from Mobile Sources?

This report deals with Cars and Climate that discusses what can Environmental Protection Agency (EPA) Do to Control Greenhouse Gases from Mobile Sources.
Date: May 8, 2009
Creator: McCarthy, James E.
Object Type: Report
System: The UNT Digital Library