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Freight Transportation: National Policy and Strategies Can Help Improve Freight Mobility

Description: A letter report issued by the Government Accountability Office with an abstract that begins "Continued development and efficient performance of the nation's freight transportation system is vital to maintaining a strong U.S. economy and sustaining our nation's competitive position in the global economy. Yet, increasing congestion on our nation's roads and rail lines threatens to undermine the efficiency of our freight transportation system. Although the Department of Transportation (DOT) has ta… more
Date: January 7, 2008
Creator: United States. Government Accountability Office.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Single shot extreme ultraviolet laser imaging of nanostructures with wavelength resolution

Description: We have demonstrated near-wavelength resolution microscopy in the extreme ultraviolet. Images of 50 nm diameter nanotubes were obtained with a single {approx}1 ns duration pulse from a desk-top size 46.9 nm laser. We measured the modulation transfer function of the microscope for three different numerical aperture zone plate objectives, demonstrating that 54 nm half-period structures can be resolved. The combination of near-wavelength spatial resolution and high temporal resolution opens myriad… more
Date: January 7, 2008
Creator: Jones, Juanita; Brewer, Courtney A.; Brizuela, Fernando; Wachulak, Przemyslaw; Martz, Dale H.; Chao, Weilun et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Microbiological, Geochemical and Hydrologic Processes Controlling Uranium Mobility: An Integrated Field-Scale Subsurface Research Challenge Site at Rifle, Colorado, Quality Assurance Project Plan

Description: The U.S. Department of Energy (DOE) is cleaning up and/or monitoring large, dilute plumes contaminated by metals, such as uranium and chromium, whose mobility and solubility change with redox status. Field-scale experiments with acetate as the electron donor have stimulated metal-reducing bacteria to effectively remove uranium [U(VI)] from groundwater at the Uranium Mill Tailings Site in Rifle, Colorado. The Pacific Northwest National Laboratory and a multidisciplinary team of national laborato… more
Date: January 7, 2008
Creator: Fix, N. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Progress in Large Period Multilayer Coatings for High Harmonic and Solar Applications

Description: Multilayer coatings for normal incidence optics designed for the long wavelength region (25 nm < {lambda} < 50 nm) are particularly challenging due to the few number of layers that can be utilized in the reflection. Recently, Mg/SiC multilayers have been fabricated with normal incidence reflectivity in the vicinity of 40% for wavelengths near the He-II line at 30.4 nm. Motivated by this success we have investigated the use of a tri-band multilayer to increase the bandwidth while maintaini… more
Date: January 7, 2008
Creator: Jones, Juanita; Aquila, Andrew; Salmassi, Farhad & Gullikson, Eric
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Decoding sequential vs non-sequential two-photon double ionizationof helium using nuclear recoil

Description: Above 54.4 eV, two-photon double ionization of helium isdominated by a sequential absorption process, producing characteristicbehavior in the single and triple differential cross sections. We showthat the signature of this process is visible in the nuclear recoil crosssection, integrated over all energy sharings of the ejected electrons,even below the threshold for the sequential process. Since nuclear recoilmomentum imaging does not require coincident photoelectron measurement,the predicted im… more
Date: January 7, 2008
Creator: Horner, Daniel A.; Rescigno, Thomas N. & McCurdy, C. William
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Simple de Sitter Solutions

Description: We present a framework for de Sitter model building in type IIA string theory, illustrated with specific examples. We find metastable dS minima of the potential for moduli obtained from a compactification on a product of two Nil three-manifolds (which have negative scalar curvature) combined with orientifolds, branes, fractional Chern-Simons forms, and fluxes. As a discrete quantum number is taken large, the curvature, field strengths, inverse volume, and four dimensional string coupling become… more
Date: January 7, 2008
Creator: Silverstein, Eva
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A Korarchael Genome Reveals Insights into the Evolution of the Archaea

Description: The candidate division Korarchaeota comprises a group of uncultivated microorganisms that, by their small subunit rRNA phylogeny, may have diverged early from the major archaeal phyla Crenarchaeota and Euryarchaeota. Here, we report the initial characterization of a member of the Korarchaeota with the proposed name, ?Candidatus Korarchaeum cryptofilum,? which exhibits an ultrathin filamentous morphology. To investigate possible ancestral relationships between deep-branching Korarchaeota and oth… more
Date: January 7, 2008
Creator: Lapidus, Alla; Elkins, James G.; Podar, Mircea; Graham, David E.; Makarova, Kira S.; Wolf, Yuri et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

LESSONS LEARNED IN OPERATING THE HOSE-IN-HOSE SYSTEM FOR TRANSFSERRING SLUDGE AT HANFORDS K-BASINS

Description: In May 2007, the Department of Energy and the Fluor Hanford K Basin Closure Project completed transferring sludge from the K East Basin to new containers in the K West Basin using a Hose-in-Hose system. This project presented a number of complex and unique technical, operational, and management challenges that had to be resolved to complete the required transfers and satisfy project milestones. The project team (including DOE; regulators; and Fluor management, operations, maintenance, engineeri… more
Date: January 7, 2008
Creator: MW, PERES
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Geochemical Characterization Data Package for the Vadose Zone in the Single-Shell Tank Waste Management Areas at the Hanford Site

Description: This data package discusses the geochemistry of vadose zone sediments beneath the single-shell tank (SST) farms at the U.S. Department of Energy’s (DOE’s) Hanford Site. The purpose of the report is to provide a review of the most recent and relevant geochemical information available for the vadose zone beneath the SST farms and the Integrated Disposal Facility (IDF).
Date: January 7, 2008
Creator: Cantrell, Kirk J.; Brown, Christopher F.; Serne, R. Jeffrey & Krupka, Kenneth M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Testing Atom and Neutron Neutrality with Atom Interferometry

Description: We propose an atom-interferometry experiment based on the scalar Aharonov-Bohm effect which detects an atom charge at the 10{sup -28} e level, and improves the current laboratory limits by 8 orders of magnitude. This setup independently probes neutron charges down to 10{sup 28} e, 7 orders of magnitude below current bounds.
Date: January 7, 2008
Creator: Arvanitaki, Asimina; /Stanford U., ITP /SLAC; Dimopoulos, Savas; Geraci, Andrew A.; Hogan, Jason; Kasevich, Mark et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Study of the 11C(p,gamma) reaction via the indirect d(11C,12N)ntransfer reaction

Description: The {sup 11}C(p,{gamma}){sup 12}N reaction is expected to be an important branch point in supermassive low-metallicity stars because it could produce CNO seed nuclei before the traditional triple-alpha process turns on. In the present work, the d({sup 11}C, {sup 12}N)n transfer reaction was employed to evaluate this reaction using a radioactive ion beam of 150 MeV {sup 11}C with 6 x 10{sup 5} ions/s on target from the BEARS project at the 88-inch cyclotron at Lawrence Berkeley National Laborato… more
Date: January 7, 2008
Creator: Lee, Dongwon; Powell, James; Perajarvi, Kari; Guo, Fanqing; Moltz, Dennis & Cerny, Joseph
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Coreless Concept for High Gradient Induction Cell

Description: An induction linac cell for a high gradient is discussed. The proposed solid state coreless approach for the induction linac topology (SLIM{reg_sign}) is based on nanosecond mode operation. This mode may have an acceleration gradient comparable with gradients of rf- accelerator structures. The discussed induction system has the high electric efficiency. The key elements are a solid state semiconductor switch and a high electric density dielectric with a thin section length. The energy in the in… more
Date: January 7, 2008
Creator: Krasnykh, Anatoly
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The USDA’s Authority to Recall Meat and Poultry Products

Description: This report provides an overview of the USDA's authority to regulate meat, poultry, and their products. Specifically, the report discusses the requirements of USDA inspections and import regulations, as well as the USDA's role in product recalls. This report also addresses some of the issues that arise when considering possible changes to recall authority and reviews proposed legislation regarding the role of the USDA in the recall process. The Appendix of this report provides information regar… more
Date: January 7, 2008
Creator: Brougher, Cynthia & Becker, Geoffrey S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Weighing the Costs and Benefits of State Renewables Portfolio Standards in the United States: A Comparative Analysis of State-Level Policy Impact Projections

Description: State renewables portfolio standards (RPS) have emerged as one of the most important policy drivers of renewable energy capacity expansion in the U.S. As RPS policies have been proposed or adopted in an increasing number of states, a growing number of studies have attempted to quantify the potential impacts of these policies, focusing primarily on cost impacts, but sometimes also estimating macroeconomic, risk reduction, and environmental effects. This article synthesizes and analyzes the resul… more
Date: January 7, 2008
Creator: Chen, Cliff; Wiser, Ryan; Mills, Andrew & Bolinger, Mark
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Items Supporting the Hanford Internal Dosimetry Program Implementation of the IMBA Computer Code

Description: The Hanford Internal Dosimetry Program has adopted the computer code IMBA (Integrated Modules for Bioassay Analysis) as its primary code for bioassay data evaluation and dose assessment using methodologies of ICRP Publications 60, 66, 67, 68, and 78. The adoption of this code was part of the implementation plan for the June 8, 2007 amendments to 10 CFR 835. This information release includes action items unique to IMBA that were required by PNNL quality assurance standards for implementation of … more
Date: January 7, 2008
Creator: Carbaugh, Eugene H. & Bihl, Donald E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Comparison of AEO 2008 Natural Gas Price Forecast to NYMEX Futures Prices

Description: On December 12, 2007, the reference-case projections from Annual Energy Outlook 2008 (AEO 2008) were posted on the Energy Information Administration's (EIA) web site. We at LBNL have, in the past, compared the EIA's reference-case long-term natural gas price forecasts from the AEO series to contemporaneous natural gas prices that can be locked in through the forward market, with the goal of better understanding fuel price risk and the role that renewables can play in mitigating such risk. As su… more
Date: January 7, 2008
Creator: Bolinger, Mark A. & Wiser, Ryan
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

NATO in Afghanistan: A Test of the Transatlantic Alliance

Description: This report discusses the mission of the North Atlantic Treaty Organization (NATO) in Afghanistan, the purpose of which is to stabilize and reconstruct Afghanistan by combating emerging threats such as terrorism and the proliferation of weapons of mass destruction. This report also discusses how the Obama Administration has made the Afghanistan conflict a policy priority, and what this stance could mean for potential future endeavors.
Date: January 7, 2008
Creator: Gallis, Paul
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Environmental Laws: Summaries of Major Statutes Administered by the Environmental Protection Agency (EPA)

Description: This article summarises major statutes administered by the environmental protection agency. It mentions the Pollution Prevention Act, Clean Air Act, Clean Water Act, Safe Drinking Water Act, Solied Waste Disposal Act and Resource Conservation and Recovery Act
Date: January 7, 2008
Creator: Fletcher, Susan
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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