27 Matching Results

Search Results

Results: 1 - 24 next
open access

3-D Seismic Methods for Geothermal Reservoir Exploration and Assessment--Summary

Description: A wide variety of seismic methods covering the spectrum from DC to kilohertz have been employed at one time or the other in geothermal environments. The reasons have varied from exploration for a heat source to attempting to find individual fractures producing hot fluids. For the purposes here we will assume that overall objective of seismic imaging is for siting wells for successful location of permeable pathways (often fracture permeability) that are controlling flow and transport in naturall… more
Date: July 14, 2003
Creator: Majer, E. L.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Airport Improvement Program

Description: This issue brief discusses the Airport Improvement Program and its complement, the Passenger Facility Charge (PFC). After a brief history of federal support for airport construction and improvement, the report describes AIP funding, its source of revenues, funding distribution, the types of projects the program funds,AIP and PFC policy issues, and the allowable use of AIP funds for airport security purposes.
Date: July 14, 2003
Creator: Kirk, Robert S.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Argonne National Laboratory-East site environmental report for calendar year 2002.

Description: This report discusses the accomplishments of the environmental protection program at Argonne National Laboratory-East (ANL-E) for calendar year 2002. The status of ANL-E environmental protection activities with respect to the various laws and regulations that govern waste handling and disposal is discussed, along with the progress of environmental corrective actions and restoration projects. To evaluate the effects of ANL-E operations on the environment, samples of environmental media collected… more
Date: July 14, 2003
Creator: Golchert, N. W. & Kolzow, R. G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Critical Infrastructure: Control Systems and the Terrorist Threat

Description: This report addresses the cyber-vulnerability of critical infrastructure industries which regularly use industrial control systems. Industrial control systems may be vulnerable to infiltration by different routes, including wireless transmission, direct access to control system computers, exploitation of dial-up modems used for maintenance, or through the Internet. This report will specifically discuss the potential for access to industrial control systems through the Internet.
Date: July 14, 2003
Creator: Shea, Dana A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

DEVELOPMENT AND UTILIZATION OF TEST FACILITY FOR THE STUDY OF CANDLE FILTER SURFACE REGENERATION

Description: Hot gas particulate filtration is a basic component in advanced power generation systems such as Integrated Gasification Combined Cycle (IGCC) and Pressurized Fluidized Bed Combustion (PFBC). These systems require effective particulate removal to protect the downstream gas turbine and also to meet environmental emission requirements. The ceramic barrier filter is one of the options for hot gas filtration. Hot gases flow through ceramic candle filters leaving ash deposited on the outer surface o… more
Date: July 14, 2003
Creator: Kang, Bruce S. & Johnson, Eric K.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Economic Analysis of the Charitable Contribution Deduction for Non-Itemizers

Description: This report summarizes the provisions affecting charitable contribution deductions of individuals, and then analyzes the incentive such a deduction would create for increased charitable giving beginning with the original proposal for a relatively low cap and then considering other approaches including the current one. It does not attempt to estimate other types of societal impacts. The non-itemizer’s charitable deduction was the single most important tax provision in the original version of H.R… more
Date: July 14, 2003
Creator: Gravelle, Jane G.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Federal Railroad Safety Program and Reauthorization Issues

Description: The Federal Railroad Administration of the U.S. Department of Transportation is the primary federal agency that promotes and regulates railroad safety. To implement its safety responsibilities, the Federal Railroad Administration uses numerous strategies including the Safety Assurance and Compliance Program, field inspections; and to help improve its regulations, the administration uses the Railroad Safety Advisory Committee. This report contains information on the Federal Railroad Administrati… more
Date: July 14, 2003
Creator: Rothberg, Paul F. & Williamson, John
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Financial Management: Effective Implementation of the Improper Payments Information Act of 2002 Is Key to Reducing the Government's Improper Payments

Description: Testimony issued by the General Accounting Office with an abstract that begins "The Subcommittee on Government Efficiency and Financial Management, House Committee on Government Reform asked GAO to testify on the implementation of the Improper Payments Information Act of 2002 (PL 107-300) and related Office of Management and Budget (OMB) guidance, and on GAO's strategies to reduce improper payments."
Date: July 14, 2003
Creator: United States. General Accounting Office.
Item Type: Refine your search to only Text
Partner: UNT Libraries Government Documents Department
open access

Finite-duration Seeding Effects in Powerful Backward Raman Amplifiers

Description: In the process of backward Raman amplification (BRA), the leading layers of the seed laser pulse can shadow the rear layers, thus weakening the effective seeding power and affecting parameters of output pulses in BRA. We study this effect numerically and also analytically by approximating the pumped pulse by the ''*-pulse'' manifold of self-similar solutions. We determine how the pumped pulse projection moves within the *-pulse manifold, and describe quantitatively the effective seeding power e… more
Date: July 14, 2003
Creator: Yampolsky, N. A.; Malkin, V. M. & Fisch, N. J.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Geographical Indications and WTO Negotiations

Description: This report discusses the issue of expanding intellectual property protections for geographical indications for wines, spirits, and agricultural products is being debated in the World Trade Organization (WTO).
Date: July 14, 2003
Creator: Hanrahan, Charles E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Hydroacoustic Studies Using HydroCAM - Station-centric Integration of Models and Observations Quarterly Report No. 3 April 2003 - June 2003

Description: OAK A271 Hydroacoustic Studies Using HydroCAM - Station-centric Integration of Models and Observations Quarterly Report No. 3 April 2003 - June 2003. BBN's work from April through June of 2003 was focused on the testing and release of HydroCAM 4.0, development of HydroCAM 4.1 software, continued data collection and analysis, and initial preparations for the 2003 Seismic Research Review. HydroCAM 4.0 was released and sent to DOE and AFTAC on June 9. This is the first release of new software on t… more
Date: July 14, 2003
Creator: Pulli, Jay J. & Upton, Zachary M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The Interaction of Dislocations and Radiation-Induced Obstacles at High-Strain Rate

Description: Improved understanding of the plastic deformation of metals during high strain rate shock loading is key to predicting their resulting material properties. This paper presents the results of molecular dynamics simulations that identify the deformation modes of aluminum over a range of applied shear stresses and examines the interaction between dislocations and irradiation induced obstacles. These simulations show that while super-sonic dislocation motion can occur during impact loading, the fin… more
Date: July 14, 2003
Creator: Young, J. A.; Wirth, B. D.; Robach, J. & Robertson, I.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Investigation into the Role of Initial Conditions on Rayleigh-Taylor Instabilities by Low Atwood Experiments and Simulations

Description: The primary goal of the research being conducted this summer is to investigate the role of initial conditions in the development of a two fluid mix driven by Rayleigh-Taylor instability. The effects of initial conditions will be studied through the use of experimental facilities located at the Buoyancy-Driven Mixing Lab at Texas A&M University and through high resolution direct numerical simulations of the experiment by the MIRANDA code developed at Lawrence Livermore National Lab. The Expe… more
Date: July 14, 2003
Creator: Mueschke, N; Andrews, M & Schilling, O
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Investigation of layered intergrowth Li{sub x}M{sub y}Mn{sub 1-y}O{sub 2+z} (M=Ni,Co,Al) compounds as positive electrodes for Li-ion batteries

Description: Layered substituted lithium manganese oxides suitable for use as lithium ion battery electrodes may be prepared from the corresponding sodium manganese metal oxide compounds by ion-exchange. Stacking arrangements (O2, O3, or O2/O3 intergrowths) in the lithiated materials are dependent upon the Na/transition metal ratio in the sodium-containing precursors, the degree of substitution, and the identity of the substituting metal. O3 layered materials deliver up to 200 mAh/g at moderate current dens… more
Date: July 14, 2003
Creator: Dolle, M.; Hollingsworth, J.; Richardson, T. J. & Doeff, M. M.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Investigations of Low and Moderate Harmonic Fast Wave Physics on CDX-U

Description: Third harmonic hydrogen cyclotron fast wave heating studies are planned in the near term on CDX-U to investigate the potential for bulk ion heating. In preparation for these studies, the available radio-frequency power in CDX-U has been increased to 0.5 MW. The operating frequency of the CDX-U radio-frequency transmitter was lowered to operate in the range of 8-10 MHz, providing access to the ion harmonic range 2* {approx} 4* in hydrogen. A similar regime is accessible for the 30 MHz radio-freq… more
Date: July 14, 2003
Creator: Spaleta, J.; Majeski, R.; Phillips, C.K.; Dumont, R.J.; Kaita, R.; Soukhanovskii, V. et al.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Mechanisms of Plastic and Fracture Instabilities for Alloy Development of Fusion Materials. Final Project Report for period July 15, 1998 - July 14, 2003

Description: The main objective of this research was to develop new computational tools for the simulation and analysis of plasticity and fracture mechanisms of fusion materials, and to assist in planning and assessment of corresponding radiation experiments.
Date: July 14, 2003
Creator: Ghoniem, N. M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Middle East, North Africa and Western Eurasia Seismic Research Database

Description: The National Nuclear Security Administration (NNSA) Ground-Based Nuclear Explosion Monitoring Research and Engineering (GNEM R&E) Program at Lawrence Livermore National Laboratory (LLNL) has made significant progress populating a comprehensive Seismic Research Database (SRDB) used for deriving seismic calibration parameters for the Middle East, North Africa and Western Eurasia (ME/NA/WE) regions. In addition to an overview of select individual information products, we present an overview of… more
Date: July 14, 2003
Creator: O'Boyle, J. L.; Ruppert, S. D.; Hauk, T. F.; Dodge, D. A.; Ganzberger, M. D. & Ryall, F.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Organometallic Chemistry. Final Progress Report

Description: The Gordon Research Conference (GRC) on Organometallic Chemistry was held at Salve Regina, Newport, Rhode Island, 7/21-26/02. Emphasis was placed on current unpublished research and discussion of the future target areas in this field.
Date: July 14, 2003
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Simulations of Underground Structures Subjected to Dynamic Loading using the Distinct Element Method

Description: We present preliminary results from a parameter study investigating the stability of underground structures in response to explosion-induced strong ground motions. In practice, even the most sophisticated site characterization may lack key details regarding precise joint properties and orientations within the rock mass. Thus, in order to place bounds upon the predicted behavior of a given facility, an extensive series of simulations representing different realizations may be required. The influ… more
Date: July 14, 2003
Creator: Morris, J P; Glenn, L A; Heuze, F E & Bonner, M P
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Sparse Partial Equilibrium Tables in Chemically Resolved Reactive Flow

Description: The detonation of an energetic material is the result of a complex interaction between kinetic chemical reactions and hydrodynamics. Unfortunately, little is known concerning the detailed chemical kinetics of detonations in energetic materials. CHEETAH uses rate laws to treat species with the slowest chemical reactions, while assuming other chemical species are in equilibrium. CHEETAH supports a wide range of elements and condensed detonation products and can also be applied to gas detonations.… more
Date: July 14, 2003
Creator: Vitello, P; Fried, L E; Pudliner, B & McAbee, T
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A Summary of Properties Used to Evaluate INEEL Calcine Disposal in the Yucca Mountain Repository

Description: To support evaluations of the direct disposal of Idaho National Engineering and Environmental Laboratory calcines to the repository at Yucca Mountain, an evaluation of the performance of the calcine in the repository environment must be performed. This type of evaluation demonstrates, through computer modeling and analysis, the impact the calcine would have on the ability of the repository to perform its function of containment of materials during the repository lifetime. This report discusses … more
Date: July 14, 2003
Creator: Dahl, C.A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
Back to Top of Screen