INDEPENDENT VERIFICATION SURVEY REPORT FOR THE OPERABLE UNIT-1 LANDFILL TRENCHES, MIAMISBURG CLOSURE PROJECT (open access)

INDEPENDENT VERIFICATION SURVEY REPORT FOR THE OPERABLE UNIT-1 LANDFILL TRENCHES, MIAMISBURG CLOSURE PROJECT

INDEPENDENT VERIFICATION SURVEY REPORT FOR THE OPERABLE UNIT-1 LANDFILL TRENCHES, MIAMISBURG CLOSURE PROJECT, MIAMISBURG, OHIO DCN: 0468-SR-02-0
Date: May 24, 2010
Creator: Adams, W. C.
Object Type: Report
System: The UNT Digital Library
Report of the First Confidence Building Exercise For Biomedical Sample Analysis (open access)

Report of the First Confidence Building Exercise For Biomedical Sample Analysis

We participated in the first exercise to build confidence in the analysis of biomedical samples for trace levels of CW agents and/or their degradation, reaction or metabolites.
Date: February 24, 2010
Creator: Alcaraz, A. & Gregg, H.
Object Type: Report
System: The UNT Digital Library
A Seemingly Simple Task: Filling a Solenoid Volume in Vacuum with Dense Plasma (open access)

A Seemingly Simple Task: Filling a Solenoid Volume in Vacuum with Dense Plasma

Space-charge neutralization of a pulsed, high-current ion beam is required to compress and focus the beam on a target for warm dense matter physics or heavy ion fusion experiments. We described attempts to produce dense plasma in and near the final focusing solenoid through which the ion beam travels, thereby providing an opportunity for the beam to acquire the necessary charge-compensating electrons. Among the options are plasma injection from four pulsed vacuum arc sources located outside the solenoid, and using a high current (> 4 kA) pulsed vacuum arc plasma from a ring cathode near the edge of the solenoid. The plasma distribution is characterized by photographic means and by an array of movable Langmuir probes. The plasma is produced at several cathode spots distributed azimuthally on the ring cathode. Beam neutralization and compression are accomplished, though issues of density, uniformity, and pulse-to-pulse reproducibly remain to be solved.
Date: June 24, 2010
Creator: Anders, Andre; Kauffeldt, Marina; Roy, Prabir & Oks, Efim
Object Type: Article
System: The UNT Digital Library
Guinea: Background and Relations with the United States (open access)

Guinea: Background and Relations with the United States

This report discusses the current political conditions in Guinea, as well as the considerable changes to Guinea's political landscape that have taken place over the past two years. The report also discusses U.S. interests and associated policy challenges in Guinea, centering around democratization, counternarcotics issues, regional stability, and socioeconomic development, among other issues.
Date: November 24, 2010
Creator: Arieff, Alexis & Cook, Nicolas
Object Type: Report
System: The UNT Digital Library
MODIS Airborne simulator (MAS) Final Report for CLASIC (open access)

MODIS Airborne simulator (MAS) Final Report for CLASIC

The MAS was flown aboard the NASA ER-2 for the CLASIC field experiment, and for all data collected, provided calibrated and geolocated (Level-1B) radiance data for it’s 50 spectral bands (ranging in wavelength for 0.47 to 14.3 µm). From the Level-1B data, as directed in the Statement of Work, higher order (Level-2) data products were derived. The Level-2 products include: a) cloud optical thickness, b) cloud effective radius, c) cloud top height (temperature), d) cloud fraction, e) cloud phase products. Preliminary Level-1B and Level-2 products were provided during the field experiment (typically within one or two days of data collection). Final version data products were made available in December 2008 following considerable calibration analysis. Data collection, data processing (to Level-2), and discussion of the calibration work are summarized below.
Date: November 24, 2010
Creator: Arnold, Thomas & Platnick, Steven
Object Type: Report
System: The UNT Digital Library
Photoacoustically Measured Speeds of Sound of Liquid HBO2: On Unlocking the Fuel Potential of Boron (open access)

Photoacoustically Measured Speeds of Sound of Liquid HBO2: On Unlocking the Fuel Potential of Boron

Elucidation of geodynamic, geochemical, and shock induced processes is often limited by challenges to accurately determine molecular fluid equations of state (EOS). High pressure liquid state reactions of carbon species underlie physiochemical mechanisms such as differentiation of planetary interiors, deep carbon sequestration, propellant deflagration, and shock chemistry. Here we introduce a versatile photoacoustic technique developed to measure accurate and precise speeds of sound (SoS) of high pressure molecular fluids and fluid mixtures. SoS of an intermediate boron oxide, HBO{sub 2} are measured up to 0.5 GPa along the 277 C isotherm. A polarized Exponential-6 interatomic potential form, parameterized using our SoS data, enables EOS determinations and corresponding semi-empirical evaluations of > 2000 C thermodynamic states including energy release from bororganic formulations. Our thermochemical model propitiously predicts boronated hydrocarbon shock Hugoniot results.
Date: March 24, 2010
Creator: Bastea, S.; Crowhurst, J.; Armstrong, M. & Teslich, Nick, Jr.
Object Type: Article
System: The UNT Digital Library
CRS Issue Statement on NATO (open access)

CRS Issue Statement on NATO

This report discusses NATO-Russia relations deteriorated in 2008 as Russia vocally opposed U.S. and alliance proposals to strengthen relations with Georgia and Ukraine and as ties in the NATO-Russia Council were suspended in the wake of the Russia-Georgia Conflict.
Date: June 24, 2010
Creator: Belkin, Paul
Object Type: Report
System: The UNT Digital Library
Steering the Self-Assembly of Octadecylamine Monolayers on Mica by Controlled Mechanical Energy Transfer from the AFM Tip (open access)

Steering the Self-Assembly of Octadecylamine Monolayers on Mica by Controlled Mechanical Energy Transfer from the AFM Tip

We have studied the effect of mechanical energy transfer from the tip of an Atomic Force Microscope on the dynamics of self-assembly of monolayer films of octadecylamine on mica. The formation of the self-assembled film proceeds in two successive stages, the first being a fast adsorption from solution that follows a Langmuir isotherm. The second is a slower process of island growth by aggregation of the molecules dispersed on the surface. We found that the dynamics of aggregation can be altered substantially by the addition of mechanical energy into the system through controlled tip-surface interactions. This leads to either the creation of pinholes in existing islands as a consequence of vacancy concentration, and to the assembly of residual molecules into more compact islands.
Date: June 24, 2010
Creator: Benitez, J.J.; Heredia-Guerrero, J.A. & Salmeron, M.
Object Type: Article
System: The UNT Digital Library
Intelligence Estimates: How Useful to Congress? (open access)

Intelligence Estimates: How Useful to Congress?

National Intelligence Estimates (NIEs) are often of considerable interest to many Members of Congress. NIEs address issues of major national security importance which may require congressional action. However, NIEs have occasionally proved unreliable because they were based on insufficient evidence or contained faulty analysis. This report explores this issue and discusses the NIE process and its relevance to congressional policymaking.
Date: November 24, 2010
Creator: Best, Richard A., Jr.
Object Type: Report
System: The UNT Digital Library
Hydrogen Filling Station (open access)

Hydrogen Filling Station

Hydrogen is an environmentally attractive transportation fuel that has the potential to displace fossil fuels. The Freedom CAR and Freedom FUEL initiatives emphasize the importance of hydrogen as a future transportation fuel. Presently, Las Vegas has one hydrogen fueling station powered by natural gas. However, the use of traditional sources of energy to produce hydrogen does not maximize the benefit. The hydrogen fueling station developed under this grant used electrolysis units and solar energy to produce hydrogen fuel. Water and electricity are furnished to the unit and the output is hydrogen and oxygen. Three vehicles were converted to utilize the hydrogen produced at the station. The vehicles were all equipped with different types of technologies. The vehicles were used in the day-to-day operation of the Las Vegas Valley Water District and monitoring was performed on efficiency, reliability and maintenance requirements. The research and demonstration utilized for the reconfiguration of these vehicles could lead to new technologies in vehicle development that could make hydrogen-fueled vehicles more cost effective, economical, efficient and more widely used. In order to advance the development of a hydrogen future in Southern Nevada, project partners recognized a need to bring various entities involved in hydrogen development and …
Date: February 24, 2010
Creator: Boehm, Robert F; Sabacky, Bruce; Anderson II, Everett B; Haberman, David; Al-Hassin, Mowafak; He, Xiaoming et al.
Object Type: Report
System: The UNT Digital Library
IR Bandwidth and Crystal Thickness Effects on THG Efficiency and Temporal Shaping of Quasi-Rectangular UV Pulses: Part II - Incident IR Ripple (open access)

IR Bandwidth and Crystal Thickness Effects on THG Efficiency and Temporal Shaping of Quasi-Rectangular UV Pulses: Part II - Incident IR Ripple

We have investigated the effect of incident ir spectral bandwidth and crystal thickness, on uv pulses produced by third harmonic generation (THG) in a crystal pair. Our focus is on the third harmonic generation efficiency and longitudinal uv intensity profile parameters of SNLO predictions that are evaluated for three incident ir spectral bandwidths and a range of crystal thicknesses. These results represent a continuation of earlier work in which the effects of the same selected ir bandwidths and range of crystal thicknesses were investigated using a pair of BBO Type I crystals in a simplistic geometry for which the longitudinal intensity plateau has a zero slope, 'flattop' profile. The current work is distinguished from the previous work by an imposed ripple on the ir intensity longitudinal profile and constitutes a portion of a Part II effort to which we have made reference. As with preceding work, all third harmonic data are net results at the exit of the second BBO crystal. Predictions are obtained with the modified SNLO code developed by Arlee Smith at the Sandia National Laboratories. This modification has allowed us to pursue the 'coupled' case in which the output of the first BBO crystal is used as …
Date: November 24, 2010
Creator: Bolton, Paul R. & Limborg-Deprey, Cecile
Object Type: Report
System: The UNT Digital Library
Multi-Objective Direct Optimization of Dynamic Acceptance and Lifetime for Potential Upgrades of the Advanced Photon Source. (open access)

Multi-Objective Direct Optimization of Dynamic Acceptance and Lifetime for Potential Upgrades of the Advanced Photon Source.

The Advanced Photon Source (APS) is a 7 GeV storage ring light source that has been in operation for well over a decade. In the near future, the ring may be upgraded, including changes to the lattice such as provision of several long straight sections (LSS). Because APS beamlines are nearly fully built out, we have limited freedom to place LSSs in a symmetric fashion. Arbitrarily-placed LSSs will drastically reduce the symmetry of the optics and would typically be considered unworkable. We apply a recently-developed multi-objective direct optimization technique that relies on particle tracking to compute the dynamic aperture and Touschek lifetime. We show that this technique is able to tune sextupole strengths and select the working point in such a way as to recover the dynamic and momentum acceptances. We also show the results of experimental tests of lattices developed using these techniques.
Date: August 24, 2010
Creator: Borland, M.; Sajaev, V.; Emery, L.; Xiao, A. & (APS), Accelerator Systems Division
Object Type: Report
System: The UNT Digital Library
Biochar: Examination of an Emerging Concept to Mitigate Climate Change (open access)

Biochar: Examination of an Emerging Concept to Mitigate Climate Change

Biochar is a charcoal produced under high temperatures using crop residues, animal manure, or any type of organic waste material. Depending on the feedstock, biochar may look similar to potting soil or to a charred substance. The combined production and use of biochar is considered a carbon-negative process, meaning that it removes carbon from the atmosphere. This report briefly describes biochar, its potential advantages and disadvantages, legislative support, and research and development activities underway in the United States.
Date: May 24, 2010
Creator: Bracmort, Kelsi S.
Object Type: Report
System: The UNT Digital Library
Immigration-Related Worksite Enforcement: Performance Measures (open access)

Immigration-Related Worksite Enforcement: Performance Measures

In the spring of 2009, the Department of Homeland Security (DHS) issued new guidance on immigration-related worksite enforcement. According to 2008 estimates, there are some 8.3 million unauthorized workers in the U.S. civilian labor force. Enforcement activity by the Department of Labor (DOL) is also relevant to a discussion of federal efforts to curtail unauthorized employment.
Date: June 24, 2010
Creator: Bruno, Andorra
Object Type: Report
System: The UNT Digital Library
Fishery, Aquaculture, and Marine Mammal Issues in the 111th Congress (open access)

Fishery, Aquaculture, and Marine Mammal Issues in the 111th Congress

This report discusses federal laws and regulations regarding fish and marine mammals that are important resources in open ocean and nearshore coastal areas. These lows and regulations guide their management as well as the management of their habitat.
Date: December 24, 2010
Creator: Buck, Eugene H. & Upton, Harold F.
Object Type: Report
System: The UNT Digital Library
Transcript of Commission on Wartime Contracting in Iraq & Afghanistan Hearing: May 24, 2010 (open access)

Transcript of Commission on Wartime Contracting in Iraq & Afghanistan Hearing: May 24, 2010

Transcript of a public hearing held by the Commission on Wartime Contracting in Iraq & Afghanistan held May 24, 2010. This hearing includes testimony from two panels representing governmental agencies and criminal investigative organizations on issues that confront law-enforcement officials in a contingency environment and the work of USAID, the DoD and DoS since the 2009 hearing.
Date: May 24, 2010
Creator: CQ Transcriptions
Object Type: Text
System: The UNT Digital Library
Energy's Water Demand: Trends, Vulnerabilities, and Management (open access)

Energy's Water Demand: Trends, Vulnerabilities, and Management

The nation's energy choices embody many tradeoffs. Water use is one of those tradeoffs. The energy choices before Congress represent vastly different demands on domestic freshwater. The energy sector's water consumption is projected to rise 50% from 2005 to 2030. This rising water demand derives from both an increase in the amount of energy demanded and shifts to more water-intense energy sources and technologies. This report discusses this issue as well as related issues that may arise for the 112th Congress.
Date: November 24, 2010
Creator: Carter, Nicole T.
Object Type: Report
System: The UNT Digital Library
Japan-U.S. Relations: Issues for Congress (open access)

Japan-U.S. Relations: Issues for Congress

This report discusses the relationship between the United States and Japan, including Japanese efforts to support the U.S. in the wake of the September 11th, 2001 terrorist attacks and the two countries' economic ties, especially with regards to the recent economic downturn. This report also discusses the general political atmosphere of Japan, including the recent and ongoing political turmoil in Tokyo.
Date: February 24, 2010
Creator: Chanlett-Avery, Emma; Cooper, William H. & Manyin, Mark E.
Object Type: Report
System: The UNT Digital Library
Impact of WRF Physics and Grid Resolution on Low-level Wind Prediction: Towards the Assessment of Climate Change Impact on Future Wind Power (open access)

Impact of WRF Physics and Grid Resolution on Low-level Wind Prediction: Towards the Assessment of Climate Change Impact on Future Wind Power

The Weather Research and Forecast (WRF) model is used in short-range simulations to explore the sensitivity of model physics and horizontal grid resolution. We choose five events with the clear-sky conditions to study the impact of different planetary boundary layer (PBL), surface and soil-layer physics on low-level wind forecast for two wind farms; one in California (CA) and the other in Texas (TX). Short-range simulations are validated with field measurements. Results indicate that the forecast error of the CA case decreases with increasing grid resolution due to the improved representation of valley winds. Besides, the model physics configuration has a significant impact on the forecast error at this location. In contrast, the forecast error of the TX case exhibits little dependence on grid resolution and is relatively independent of physics configuration. Therefore, the occurrence frequency of lowest root mean square errors (RMSEs) at this location is used to determine an optimal model configuration for subsequent decade-scale regional climate model (RCM) simulations. In this study, we perform two sets of 20-year RCM simulations using the data from the NCAR Global Climate Model (GCM) simulations; one set models the present climate and the other simulates the future climate. These RCM simulations will …
Date: February 24, 2010
Creator: Chin, H S; Glascoe, L; Lundquist, J & Wharton, S
Object Type: Article
System: The UNT Digital Library
Fission prompt gamma-ray multiplicity distribution measurements and simulations at DANCE (open access)

Fission prompt gamma-ray multiplicity distribution measurements and simulations at DANCE

The nearly energy independence of the DANCE efficiency and multiplicity response to {gamma} rays makes it possible to measure the prompt {gamma}-ray multiplicity distribution in fission. We demonstrate this unique capability of DANCE through the comparison of {gamma}-ray energy and multiplicity distribution between the measurement and numerical simulation for three radioactive sources {sup 22}Na, {sup 60}Co, and {sup 88}Y. The prospect for measuring the {gamma}-ray multiplicity distribution for both spontaneous and neutron-induced fission is discussed.
Date: August 24, 2010
Creator: Chyzh, A.; Wu, C. Y.; Ullmann, J.; Jandel, M.; Bredeweg, T.; Couture, A. et al.
Object Type: Report
System: The UNT Digital Library
Enhanced Constraints on theta13 from A Three-Flavor Oscillation Analysis of Reactor Antineutrinos at KamLAND (open access)

Enhanced Constraints on theta13 from A Three-Flavor Oscillation Analysis of Reactor Antineutrinos at KamLAND

We present new constraints on the neutrino oscillation parameters {Delta}m{sub 21}{sup 2}, {theta}{sub 12}, and {theta}{sub 13} from a three-flavor analysis of solar and KamLAND data. The KamLAND data set includes data acquired following a radiopurity upgrade and amounts to a total exposure of 3.49 x 10{sup 32} target-proton-year. Under the assumption of CPT invariance, a two-flavor analysis ({theta}{sub 13} = 0) of the KamLAND and solar data yields the best-fit values tan{sup 2} {theta}{sub 12} = 0.444{sub -0.030}{sup +0.036} and {Delta}m{sub 21}{sup 2} = 7.50{sub -0.20}{sup +0.19} x 10{sup -5} eV{sup 2}; a three-flavor analysis with {theta}{sub 13} as a free parameter yields the best-fit values tan{sup 2} {theta}{sub 12} = 0.452{sub -0.033}{sup +0.035}, {Delta}m{sub 21}{sup 2} = 7.50{sub -0.20}{sup +0.19} x 10{sup -5}eV{sup 2}, and sin{sup 2} {theta}{sub 13} = 0.020{sub -0.016}{sup +0.016}. This {theta}{sub 13} interval is consistent with other recent work combining the CHOOZ, atmospheric and long-baseline accelerator experiments. We also present a new global {theta}{sub 13} analysis, incorporating the CHOOZ, atmospheric and accelerator data, which indicates sin{sup 2} {theta}{sub 13} = 0.017{sub -0.009}{sup +0.010}, a nonzero value at the 93% C.L. This finding will be further tested by upcoming accelerator and reactor experiments.
Date: September 24, 2010
Creator: Collaboration, The KamLAND; Gando, A.; Gando, Y.; Ichimura, K.; Ikeda, H.; Inoue, K. et al.
Object Type: Article
System: The UNT Digital Library
The Future of U.S. Trade Policy: An Analysis of Issues and Options for the 111th Congress (open access)

The Future of U.S. Trade Policy: An Analysis of Issues and Options for the 111th Congress

This report provides analysis of U.S. trade policy including factors that make up the current economic and political climate, grade issues, the depate over U.S. trade policy. It concludes with an examination of some of the options available to Congress and the pros and cons of each.
Date: March 24, 2010
Creator: Cooper, William H.
Object Type: Report
System: The UNT Digital Library
Permanent Normal Trade Relations (PNTR) Status for Russia and U.S.-Russian Economic Ties (open access)

Permanent Normal Trade Relations (PNTR) Status for Russia and U.S.-Russian Economic Ties

This report discusses the issues surrounding whether or not the U.S. should grant Russia permanent normal trade relations (PNTR) following its accession into the World Trade Organization (WTO). The change in Russia's trade status will require legislation to lift the restrictions of Title IV of the Trade Act of 1974 as they apply to Russia, which includes the "freedom-of-emigration" requirements of the Jackson-Vanik amendment.
Date: February 24, 2010
Creator: Cooper, William H.
Object Type: Report
System: The UNT Digital Library
How Agencies Monetize “Statistical Lives” Expected to Be Saved By Regulations (open access)

How Agencies Monetize “Statistical Lives” Expected to Be Saved By Regulations

This report summarizes current government-wide requirements for benefit-cost analysis and the monetization of health benefits, and describes agency-specific policies in selected health, safety, and environmental agencies.
Date: March 24, 2010
Creator: Copeland, Curtis W.
Object Type: Report
System: The UNT Digital Library