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A 10 Hz Grazing Incidence pumped Ni-like Mo laser at 18.9 nm with 150 mJ pump energy

Description: The first demonstration of the grazing incidence pumping (GRIP) scheme for laser-driven x-ray lasers (XRLs) is described utilizing 2-pulse pumping. A long pulse is incident normal to the target to produce a plasma with a particular density profile. Then a short pulse is incident at a grazing angle, chosen to optimally couple the short pulse laser energy into the specific density region where the inversion process will occur. The short pulse is simultaneously absorbed and refracted at a maximum … more
Date: September 30, 2004
Creator: Keenan, R.; Dunn, J.; Patel, P. K.; Price, D. F.; Smith, R. F. & Shlyaptsev, V. N.
Partner: UNT Libraries Government Documents Department
open access

Ab Initio No-Core Shell Model Calculations Using Realistic Two- and Three-Body Interactions

Description: There has been significant progress in the ab initio approaches to the structure of light nuclei. One such method is the ab initio no-core shell model (NCSM). Starting from realistic two- and three-nucleon interactions this method can predict low-lying levels in p-shell nuclei. In this contribution, we present a brief overview of the NCSM with examples of recent applications. We highlight our study of the parity inversion in {sup 11}Be, for which calculations were performed in basis spaces up t… more
Date: November 30, 2004
Creator: Navratil, P; Ormand, W E; Forssen, C & Caurier, E
Partner: UNT Libraries Government Documents Department
open access

Adaptive Importance Sampling Monte Carlo Simulation of Rare Transition Events

Description: We present an adaptive importance sampling method for quantifying the statistics of rare-event processes in atomistic simulations. The approach is based on an explicit evaluation of the probability that a sequence of states (or path) initiating in a state A leads to a reactive transition event to final state B. The importance sampling method seeks to bias the sampling of system trajectories such that those that contribute significantly, i.e. those that characterize reactive transitions, are gen… more
Date: August 30, 2004
Creator: de Koning, M; Cai, W; Sadigh, B; Oppelstrup, T; Kalos, M H & Bulatov, V V
Partner: UNT Libraries Government Documents Department
open access

Additional Posthearing Questions Related to Proposed Department of Homeland Security (DHS) Human Capital Regulations

Description: Correspondence issued by the General Accounting Office with an abstract that begins "On February 25, 2004, Congress heard testimony at a hearing entitled "The Key to Homeland Security: The New Human Resources System." This report responds to additional questions posed by Senator Akaka and Senator Lautenberg."
Date: April 30, 2004
Creator: United States. General Accounting Office.
Partner: UNT Libraries Government Documents Department
open access

Advanced Cuttings Transport Study: Final Technical Report

Description: The Advanced Cuttings Transport Study (ACTS) was a 5-year JIP project undertaken at the University of Tulsa (TU). The project was sponsored by the U.S. Department of Energy (DOE) and JIP member companies. The objectives of the project were: (1) to develop and construct a new research facility that would allow three-phase (gas, liquid and cuttings) flow experiments under ambient and EPET (elevated pressure and temperature) conditions, and at different angle of inclinations and drill pipe rotatio… more
Date: September 30, 2004
Creator: Miska, Stefan; Reed, Troy & Kuru, Ergun
Partner: UNT Libraries Government Documents Department
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An Advanced Fracture Characterization and Well Path Navigation System for Effective Re-Development and Enhancement of Ultimate Recovery From the Complex Monterey Reservoir of South Ellwood Field, Offshore California, Quarterly Report: March - June 2004

Description: Venoco Inc, intends to re-develop the Monterey Formation, a Class III basin reservoir, at South Ellwood Field, Offshore Santa Barbara, California. Well productivity in this field varies significantly. Cumulative Monterey production for individual wells has ranged from 260 STB to 8,700,000 STB. Productivity is primarily affected by how well the well path connects with the local fracture system and the degree of aquifer support. Cumulative oil recovery to date is a small percentage of the origina… more
Date: July 30, 2004
Creator: Horner, Steve
Partner: UNT Libraries Government Documents Department
open access

Advanced Hot Section Materials and Coatings Test Rig

Description: The Hyperbaric Advanced Hot Section Materials & Coating Test Rig program provides design and implementation of a laboratory rig capable of simulating the hot gas path conditions of coal-gas fired industrial gas turbine engines. The principal activities during this reporting period were the continuation of test section detail design and developing specifications for auxiliary systems and facilities.
Date: October 30, 2004
Creator: Davies, Dan
Partner: UNT Libraries Government Documents Department
open access

ADVANCED HOT SECTION MATERIALS AND COATINGS TEST RIG

Description: The Hyperbaric Advanced Hot Section Materials & Coating Test Rig program provides design and implementation of a laboratory rig capable of simulating the hot gas path conditions of coal-gas fired industrial gas turbine engines. The principal activity during this reporting period were the evaluation of syngas combustor concepts, the evaluation of test section concepts and the selection of the preferred rig configuration.
Date: April 30, 2004
Creator: Reome, Scott & Davies, Dan
Partner: UNT Libraries Government Documents Department
open access

Advanced Hydrogen Transport Membranes for Vision 21 Fossil Fuel Plants

Description: The objective of this project is to develop an environmentally benign, inexpensive, and efficient method for separating hydrogen from gas mixtures produced during industrial processes, such as coal gasification. Currently, this project is focusing on four basic categories of dense membranes: (1) mixed conducting ceramic/ceramic composites, (2) mixed conducting ceramic/metal (cermet) composites, (3) cermets with hydrogen permeable metals, and (4) layered composites with hydrogen permeable alloys… more
Date: January 30, 2004
Creator: Roark, Shane E.; Sammells, Anthony F.; Mackay, Richard; Morrison, Scott R.; Rolfe, Sara L.; Balachandran, U. et al.
Partner: UNT Libraries Government Documents Department
open access

Advanced, Low/Zero Emission Boiler Design and Operation

Description: This document reviews the work performed during the quarter April-June 2004. Task 1 (Site Preparation) had been completed 2003, along with three weeks of oxycombustion tests in Task 2 (experimental test performance) of the project. In current reporting period, the experimental testing has been completed: one additional week of tests has been performed to finalize the optimization of the combustion characteristics in O{sub 2}/CO{sub 2} environment ; two more days of testing were dedicated to mer… more
Date: June 30, 2004
Creator: Chatel-Pelage, Fabienne & Varagani, Rajani
Partner: UNT Libraries Government Documents Department
open access

Advanced Monitoring systems initiative

Description: The Advanced Monitoring Systems Initiative (AMSI) actively searches for promising technologies and aggressively moves them from the research bench into DOE/NNSA end-user applications. There is a large unfulfilled need for an active element that reaches out to identify and recruit emerging sensor technologies into the test and evaluation function. Sensor research is ubiquitous, with the seeds of many novel concepts originating in the university systems, but at present these novel concepts do not… more
Date: September 30, 2004
Creator: Venedam, R. J.; Hohman, E. O.; Lohrstorfer, C. F.; Weeks, S. J.; Jones, J. B. & Haas, W. J.
Partner: UNT Libraries Government Documents Department
open access

ADVANCED MONITORING TO IMPROVE COMBUSTION TURBINE/COMBINED CYCLE CT/(CC) RELIABILITY, AVAILABILITY AND MAINTAINABILITY (RAM)

Description: Power generators are concerned with the maintenance costs associated with the advanced turbines that they are purchasing. Since these machines do not have fully established operation and maintenance (O&M) track records, power generators face financial risk due to uncertain future maintenance costs. This risk is of particular concern, as the electricity industry transitions to a competitive business environment in which unexpected O&M costs cannot be passed through to consumers. These co… more
Date: September 30, 2004
Creator: Angello, Leonard
Partner: UNT Libraries Government Documents Department
open access

Advanced Overfire Air system and design

Description: The objective of the proposed project is to design, install and optimize a prototype advanced tangential OFA air system on two mass feed stoker boilers that can burn coal, biomass and a mixture of these fuels. The results will be used to develop a generalized methodology for retrofit designs and optimization of advanced OFA air systems. The advanced OFA system will reduce particulate and NOx emissions and improve overall efficiency by reducing carbon in the ash and excess oxygen. The advanced O… more
Date: July 30, 2004
Creator: berkau, Gene
Partner: UNT Libraries Government Documents Department
open access

Affirmative Action Revisited: A Legal History and Prospectus

Description: Affirmative action remains a focal point of public debate as the result of legal and political developments at the federal, state, and local levels. This report discusses legislation related to affirmative action, as well as legal rulings on the topic and the federal government's role in first establishing and, later, attempting to curb affirmative action policies.
Date: January 30, 2004
Creator: Dale, Charles V.
Partner: UNT Libraries Government Documents Department
open access

Agricultural Conservation: USDA Should Improve Its Methods for Estimating Technical Assistance Costs

Description: A letter report issued by the Government Accountability Office with an abstract that begins "The U.S. Department of Agriculture's (USDA) Natural Resources Conservation Service (NRCS), working with state and local partners, provides landowners with technical assistance for multiple programs to plan and implement conservation measures that protect soil, water, and wildlife. For years, the Congress has been seeking detailed cost information on this assistance as it examined USDA budget requests. I… more
Date: November 30, 2004
Creator: United States. Government Accountability Office.
Partner: UNT Libraries Government Documents Department
open access

ALS Performance Summary - Update

Description: High Energy Density Physics (HEDP) experiments play an important role in corroborating the improved physics codes that underlie LLNL's Stockpile Stewardship mission. Conducting these experiments, whether on the National Ignition Facility (NIF) or another national facility such as Omega, will require not only improvement in the diagnostics for measuring the experiment, but also detailed knowledge of the as-built target components and assemblies themselves. To assist in this effort, a defined set… more
Date: September 30, 2004
Creator: Waters, A M; Brown, W D & Martz, H. E., Jr.
Partner: UNT Libraries Government Documents Department
open access

The Alternative Minimum Tax for Individuals

Description: This report provides a brief overview of the alternative minimum tax (AMT) for individuals, discusses the issues associated with the current system, and describes current legislation to amend the AMT. The report will be updated as legislative action warrants.
Date: April 30, 2004
Creator: Esenwein, Gregg A.
Partner: UNT Libraries Government Documents Department
open access

Alternative Transportation Fuels and Vehicles: Energy, Environment, and Development Issues

Description: This report reviews several issues relating to alternative fuels and vehicles, mainly to combat dependence on petroleum imports and reduce greenhouse gas emissions. The report discusses the advantages and drawbacks of various alternative fuels and vehicles, as well as related legislation.
Date: June 30, 2004
Creator: Yacobucci, Brent D.
Partner: UNT Libraries Government Documents Department
open access

Ambient and elevated temperature fracture and cyclic-fatigue properties in a series of Al-containing silicon carbides

Description: A series of in situ toughened, Al, B and C containing, silicon carbide ceramics (ABC-SiC) has been examined with Al contents varying from 3 to 7 wt%. With increasing Al additions, the grain morphology in the as-processed microstructures varied from elongated to bimodal to equiaxed, with a change in the nature of the grain-boundary film from amorphous to partially crystalline to fully crystalline. Fracture toughness and cyclic fatigue tests on these microstructures revealed that although the 7 w… more
Date: August 30, 2004
Creator: Yuan, Rong
Partner: UNT Libraries Government Documents Department
open access

Ammonia-Free NOx Control System

Description: Research is being conducted under United States Department of Energy (DOE) Contract DEFC26-03NT41865 to develop a new technology to achieve very low levels of NOx emissions from pulverized coal fired boiler systems by employing a novel system level integration between the PC combustion process and the catalytic NOx reduction with CO present in the combustion flue gas. The combustor design and operating conditions will be optimized to achieve atypical flue gas conditions. This approach will not … more
Date: June 30, 2004
Creator: Fan, Zhen; Wu, Song & Herman, Richard G.
Partner: UNT Libraries Government Documents Department
open access

Ammonia-Free NOx Control System

Description: Research is being conducted under United States Department of Energy (DOE) Contract DEFC26-03NT41865 to develop a new technology to achieve very low levels of NOx emissions from pulverized coal fired boiler systems by employing a novel system level integration between the PC combustion process and the catalytic NOx reduction with CO present in the combustion flue gas. The combustor design and operating conditions will be optimized to achieve atypical flue gas conditions. This approach will not … more
Date: September 30, 2004
Creator: Wu, Song; Fan, Zhen; Seltzer, Andrew H. & Herman, Richard G.
Partner: UNT Libraries Government Documents Department
open access

Analysis of Homogeneous Charge Compression Ignition (HCCI) Engines for Cogeneration Applications

Description: This paper presents an evaluation of the applicability of Homogeneous Charge Compression Ignition Engines (HCCI) for small-scale cogeneration (less than 1 MWe) in comparison to five previously analyzed prime movers. The five comparator prime movers include stoichiometric spark-ignited (SI) engines, lean burn SI engines, diesel engines, microturbines and fuel cells. The investigated option, HCCI engines, is a relatively new type of engine that has some fundamental differences with respect to oth… more
Date: April 30, 2004
Creator: Aceves, S; Martinez-Frias, J & Reistad, G
Partner: UNT Libraries Government Documents Department
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