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Ablative Stabilization of the Deceleration-Phase Rayleigh-Taylor Instability, control No. 2000-107
The growth rates of the deceleration-phase Rayleigh-Taylor instability for imploding inertial confinement fusion capsules are calculated and compared with the results of numerical simulations. It is found that the unstable spectrum and the growth rates are significantly reduced by the finite ablation flow at the shell's inner surface. For typical direct-drive capsules designed for the National Ignition Facility, the unstable spectrum exhibits a cutoff for {ell} {approx} 90.
Date:
October 1, 2000
Creator:
Lobatchev, V. & Betti, R.
System:
The UNT Digital Library
Accountability Quality Shuffler Measurements on Pits
Pits have generally been treated as accountable units that are intact if merely present and they are excluded from the more demanding nondestructive assay requirements. As pits begin to flow into disposition streams, there may be more incentive to measure the masses of their fissile components for accountability purposes. This Department of Energy Office of Safeguards and Security (OSS) Lifecycle Project has explored some ways in which such measurements may be done successfully. The active neutron instrument called a shuffler has been used to measure a variety of actual pits, and a calculational technique has been developed to accurately predict such count rates. Passive multiplicity counting has previously been applied to pits for determining their plutonium contents. This combination of measurement and calculational techniques provide powerful and accurate tools for determining the fissile contents of pits with the quality needed for accountability purposes.
Date:
October 1, 2000
Creator:
Rinard, P. M.
System:
The UNT Digital Library
ADVANCED BIOMASS REBURNING FOR HIGH EFFICIENCY NOx CONTROL AND BIOMASS REBURNING - MODELING/ENGINEERING STUDIES JOINT FINAL REPORT
This report presents results of studies under a Phase II SBIR program funded by the U. S. Department of Agriculture, and a closely coordinated project sponsored by the DOE National Energy Technology Laboratory (NETL, formerly FETC). The overall Phase II objective of the SBIR project is to experimentally optimize the biomass reburning technologies and conduct engineering design studies needed for process demonstration at full scale. The DOE project addresses supporting issues for the process design including modeling activities, economic studies of biomass handling, and experimental evaluation of slagging and fouling. The performance of biomass has been examined in a 300 kW (1 x 10{sup 6} Btu/hr) Boiler Simulator Facility under different experimental conditions. Fuels under investigation include furniture waste, willow wood and walnut shells. Tests showed that furniture pellets and walnut shells provided similar NO{sub x} control as that of natural gas in basic reburning at low heat inputs. Maximum NO{sub x} reduction achieved with walnut shell and furniture pellets was 65% and 58% respectively. Willow wood provided a maximum NO{sub x} reduction of 50% and was no better than natural gas at any condition tested. The efficiency of biomass increases when N-agent is injected into reburning and/or burnout zones, …
Date:
October 1, 2000
Creator:
Zamansky, Vladimir M.; Sheldon, Mark S.; Lissianski, Vitali V.; Maly, Peter M.; Moyeda, David K.; Marquez, Antonio et al.
System:
The UNT Digital Library
ADVANCED DIRECT LIQUEFACTION CONCEPTS FOR PETC GENERIC UNITS - PHASE II
The results of Laboratory and Bench-Scale experiments and supporting technical and economic assessments conducted under DOE Contract No. DE-AC22-91PC91040 are reported for the period January 1, 1999 to March 31, 2000. This contract is with the University of kentucky Research Foundation, which supports work with the University of Kentucky Center for Applied Energy Research, CONSOL, Inc., LDP Associates, and Hydrocarbon Technologies, Inc. This work involves the introduction into the basic two-stage liquefaction process several novel concepts, which include dispersed lower-cost catalysts, coal cleaning by oil agglomeration, and distillate hydrotreating and dewaxing. This project has been modified to include an investigation into the production of value added materials from coal using low-severity liquefaction based technologies.
Date:
October 1, 2000
Creator:
unknown
System:
The UNT Digital Library
ADVANCED GAS TURBINE SYSTEMS RESEARCH PROGRAM
The quarterly activities of the Advanced Gas Turbine Systems Research (AGTSR) program are described in this quarterly report. As this program administers research, we have included all program activity herein within the past quarter as dated. More specific research progress reports are provided weekly at the request of the AGTSR COR and are being sent to NETL As for the administration of this program, items worthy of note are presented in extended bullet format following the appropriate heading.
Date:
October 1, 2000
Creator:
Golan, Lawrence P.
System:
The UNT Digital Library
ADVANCED HYBRID PARTICULATE COLLECTOR - PHASE III
A new concept in particulate control, called an advanced hybrid particulate collector (AHPC), is being developed under funding from the U.S. Department of Energy. The AHPC combines the best features of electrostatic precipitators (ESPs) and baghouses in a unique configuration. The AHPC concept consists of a combination of fabric filtration and electrostatic precipitation in the same housing, providing major synergism between the two collection methods, both in the particulate collection step and in the transfer of dust to the hopper. The AHPC provides ultrahigh collection efficiency, overcoming the problem of excessive fine-particle emission with conventional ESPs, and it solves the problem of reentrainment and re-collection of dust in conventional baghouses. In Phase II, a 2.5-MW-scale AHPC was designed, constructed, installed, and tested at the Big Stone power station. For Phase III, further testing of an improved version of the 2.5-MW-scale AHPC at the Big Stone power station is being conducted to facilitate commercialization of the AHPC technology.
Date:
October 1, 2000
Creator:
Miller, Stanley J.; Zhuang, Ye; Collings, Michael E. & Olderbak, Michelle R.
System:
The UNT Digital Library
Advanced Technologies for Stripper Gas Well Enhancement
As part of Task 1 in the Advanced Technologies for Stripper Gas Well Enhancement, Schlumberger--Holditch Reservoir Technologies (H-RT) has partnered with two Appalachian Basin producers, Great Lakes Energy (formerly Range Resources) and Belden and Blake Corporation, to develop methodologies for the identification and enhancement of stripper wells with economic upside potential. These industry partners have provided data for over 700 wells in northwestern Pennsylvania. Phase 1 goals of this project are to develop and validate methodologies that can quickly and cost-effectively identify wells with enhancement potential. We are currently in the final stages of developing and testing our new Access/Excel based software and processing this well data to generate a list of potential candidate wells that can be used in Phase 2 to validate these methodologies.
Date:
October 1, 2000
Creator:
Boyer, C. M., II; Fairchild, N. R., Jr. & MacDonald, R. J.
System:
The UNT Digital Library
ADVANCED TECHNOLOGIES FOR STRIPPER GAS WELL ENHANCEMENT
As part of Phase 1 in the Advanced Technologies for Stripper Gas Well Enhancement, Schlumberger--Holditch Reservoir Technologies (H-RT) has partnered with two Appalachian Basin producers, Great Lakes Energy (formerly Range Resources) and Belden & Blake Corporation, to develop methodologies for the identification and enhancement of stripper wells with economic upside potential. These industry partners have provided data for over 700 wells in northwestern Pennsylvania. Phase 1 goals of this project are to develop and validate methodologies that can quickly and cost-effectively identify wells with enhancement potential. We are currently processing the production and well data and developing our new Access/Excel based software that incorporates our identification methodologies. Upon completion we will generate a list of potential candidate wells that can be used in Phase 2 to validate these methodologies.
Date:
October 1, 2000
Creator:
Boyer, C. M., II; Fairchild, N. R., Jr. & P.G., R.J. MacDonald
System:
The UNT Digital Library
ALTERNATIVE FUELS AND CHEMICALS FROM SYNTHESIS GAS
The overall objectives of this program are to investigate potential technologies for the conversion of synthesis gas to oxygenated and hydrocarbon fuels and industrial chemicals, and to demonstrate the most promising technologies at DOE's LaPorte, Texas, Slurry Phase Alternative Fuels Development Unit (AFDU). The program will involve a continuation of the work performed under the Alternative Fuels from Coal-Derived Synthesis Gas Program and will draw upon information and technologies generated in parallel current and future DOE-funded contracts.
Date:
October 1, 2000
Creator:
unknown
System:
The UNT Digital Library
Alternative Landfill Cover Demonstration, FY2000 Annual Data Report
None
Date:
October 1, 2000
Creator:
Dwyer, Stephen F.; Reavis, Bruce A. & Newman, Gretchen
System:
The UNT Digital Library
AMBIENT PM2.5 SAMPLING AND ANALYSIS
This report summarizes observations and tentative conclusions drawn from evaluations of the data captured to date from the operation of the ambient PM{sub 2.5} speciation sites in a geographical area encompassing southeastern Ohio, western Pennsylvania, and northwestern West Virginia. The overall goal of this program, called the Upper Ohio River Valley Project (UORVP), is to better understand the relationship between coal-based power system emissions and ambient air quality in the upper Ohio River Valley region through the collection of chemically resolved or speciated data.
Date:
October 1, 2000
Creator:
unknown
System:
The UNT Digital Library
Annual Hanford Site Environmental Permitting Status Report
The information contained in, and/or referenced in, this Annual Hanford Site Environmental Permitting Status Report addresses Permit Condition II.W (Other Permits and/or Approvals) of the Dangerous Waste Portion of the Resource Conservation and Recovery Act Permit for the Treatment, Storage, and Disposal of Dangerous Waste, issued by the Washington State Department of Ecology (WA7890008967). Condition II.W specifies that the Permittees are responsible for obtaining all other applicable federal, state, and local permits authorizing the development and operation of the Hanford Facility. This status report also addresses Permit Condition I.E.22, as interpreted in Section 12.1.25 of the Hanford Facility Dangerous Waste Permit Application, General Information Portion (DOE/RL-91-28, Rev. 4), that states this report will be prepared annually and a copy of this report will be placed in the Facility Operating Record, General Information file by October 1 of each year.
Date:
October 1, 2000
Creator:
Homan, N. A.
System:
The UNT Digital Library
THE APPLICATION OF HIGH TEMPERATURE SUPERCONDUCTORS TO UNDERGROUND COMMUNICATIONS
None
Date:
October 1, 2000
Creator:
REAGOR, D.
System:
The UNT Digital Library
Approximate Public Key Authentication with Information Hiding
This paper describes a solution for the problem of authenticating the shapes of statistically variant gamma spectra while simultaneously concealing the shapes and magnitudes of the sensitive spectra. The shape of a spectrum is given by the relative magnitudes and positions of the individual spectral elements. Class-specific linear orthonormal transformations of the measured spectra are used to produce output that meet both the authentication and concealment requirements. For purposes of concealment, the n-dimensional gamma spectra are transformed into n-dimensional output spectra that are effectively indistinguishable from Gaussian white noise (independent of the class). In addition, the proposed transformations are such that statistical authentication metrics computed on the transformed spectra are identical to those computed on the original spectra.
Date:
October 1, 2000
Creator:
Thomas, Edward V. & Draelos, Timothy J.
System:
The UNT Digital Library
An Audit Report on the Commission on State Emergency Communications' Implementation of Phase 1 of Wireless 9-1-1 Improvements
Report of the Texas State Auditor's Office related to whether or not the Commission on State Emergency Communications successfully completed Phase I of the 9-1-1 wireless improvements set forth in Federal Communications Commission Docket 94-102 for 75 percent of the population served by the state 9-1-1 program by September 1, 2000, as required by statute.
Date:
October 2000
Creator:
Texas. Office of the State Auditor.
System:
The Portal to Texas History
Beryllium-Ceramic Compatibility Tests
None
Date:
October 1, 2000
Creator:
Robert J. Hanrahan, Jr.
System:
The UNT Digital Library
A Biennial Report on Recommended Adjustments to the Classification Salary Schedules
Report of the Texas State Auditor's Office related to examining general salary trends in industry and other governmental units, discussing other factors which influence salaries, and providing recommendations for adjustments in compensation for state employees.
Date:
October 2000
Creator:
Texas. Office of the State Auditor.
System:
The Portal to Texas History
A Biennial Report on Recommended Changes to the Position Classification Plan
Report of the Texas State Auditor's Office related to providing recommendations for changes to the Position Classification Plan (Plan) in order to ensure that the Plan effectively meets the needs of its users.
Date:
October 2000
Creator:
Texas. Office of the State Auditor.
System:
The Portal to Texas History
Bioavailability of Organic Solvents in Soils: Input into Biologically Based Dose-Response Models for Human Risk Assessments - Final Report
Compared to dermal exposures with neat or aqueous compound, little is understood about the dermal bioavailability of solvents in soil, dust, sludge, or sediment matrices. Therefore, research in this project was designed to provide an understanding of the influence of various environmental factors on the kinetics and bioavailability of solvent-laden soils.
Date:
October 1, 2000
Creator:
Webster, R. C.
System:
The UNT Digital Library
Brookhaven National Laboratory Institutional Plan FY2001--FY2005
Brookhaven National Laboratory is a multidisciplinary laboratory in the Department of Energy National Laboratory system and plays a lead role in the DOE Science and Technology mission. The Laboratory also contributes to the DOE missions in Energy Resources, Environmental Quality, and National Security. Brookhaven strives for excellence in its science research and in facility operations and manages its activities with particular sensitivity to environmental and community issues. The Laboratory's programs are aligned continuously with the goals and objectives of the DOE through an Integrated Planning Process. This Institutional Plan summarizes the portfolio of research and capabilities that will assure success in the Laboratory's mission in the future. It also sets forth BNL strategies for our programs and for management of the Laboratory. The Department of Energy national laboratory system provides extensive capabilities in both world class research expertise and unique facilities that cannot exist without federal support. Through these national resources, which are available to researchers from industry, universities, other government agencies and other nations, the Department advances the energy, environmental, economic and national security well being of the US, provides for the international advancement of science, and educates future scientists and engineers.
Date:
October 1, 2000
Creator:
Davis, S.
System:
The UNT Digital Library
CAPILLARY BARRIERS IN UNSATURATED FRACTURED ROCKS
This work presents modeling studies investigating the effects of capillary barriers on fluid-flow and tracer-transport processes in the unsaturated zone of Yucca Mountain, Nevada, a potential site for storing high-level radioactive waste. These studies are designed to identify factors controlling the formation of capillary barriers and to estimate their effects on the extent of possible large-scale lateral flow in unsaturated fracture rocks. The modeling approach is based on a continuum formulation of coupled multiphase fluid and tracer transport through fractured porous rock. Flow processes in fractured porous rock are described using a dual-continuum concept. In addition, approximate analytical solutions are developed and used for assessing capillary-barrier effects in fractured rocks. This study indicates that under the current hydrogeologic conceptualization of Yucca Mountain, strong capillary-barrier effects exist for significantly diverting moisture flow.
Date:
October 1, 2000
Creator:
Wu, Y.S.; Zhang, W.; Pan, L.; Hinds, J. & Bodvarsson, G.
System:
The UNT Digital Library
CARBON DIOXIDE MITIGATION THROUGH CONTROLLED PHOTOSYNTHESIS
This research was undertaken to meet the need for a robust portfolio of carbon management options to ensure continued use of coal in electrical power generation. In response to this need, the Ohio Coal Research Center at Ohio University developed a novel technique to control the emissions of CO{sub 2} from fossil-fired power plants by growing organisms capable of converting CO{sub 2} to complex sugars through the process of photosynthesis. Once harvested, the organisms could be used in the production of fertilizer, as a biomass fuel, or fermented to produce alcohols. In this work, a mesophilic organism, Nostoc 86-3, was examined with respect to the use of thermophilic algae to recycle CO{sub 2} from scrubbed stack gases. The organisms were grown on stationary surfaces to facilitate algal stability and promote light distribution. The testing done throughout the year examined properties of CO{sub 2} concentration, temperature, light intensity, and light duration on process viability and the growth of the Nostoc. The results indicate that the Nostoc species is suitable only in a temperature range below 125 F, which may be practical given flue gas cooling. Further, results indicate that high lighting levels are not suitable for this organism, as bleaching occurs …
Date:
October 1, 2000
Creator:
unknown
System:
The UNT Digital Library
Characterization of Sidewall and Planar Surfaces of Electroformed LIGA Parts
The nature of surfaces and the way they interact with each other during sliding contact can have a direct bearing on the performance of a microelectromechanical (MEMS) device. Therefore, a study was undertaken to characterize the surfaces of LIGA fabricated Ni and Cu components. Sidewall and planar surfaces were examined by scanning electron microscopy (SEM) and atomic force microscopy (AFM). Surface roughness was quantified using the AFM. Post-processing (e.g. lapping, removal of polymer film) can profoundly influence the morphology of LIGA components. Edge rounding and smearing of ductile materials during lapping can result in undesirable sidewall morphologies. By judicious selection of AFM scan sizes, the native roughness ({approximately}10 nm RMS) can be distinguished from that arising due to post processing, e.g. scratches, debris, polymer films. While certain processing effects on morphology such as those due to lapping or release etch can be controlled, the true side wall morphology appears to be governed by the morphology of the polymer mold or by the electroforming process itself, and may be much less amenable to modification.
Date:
October 1, 2000
Creator:
Prasad, Somuri V.; Hall, Aaron C. & Dugger, Michael T.
System:
The UNT Digital Library
CLASSICAL KINETIC MECHANISMS DESCRIBING HETEROGENEOUS OZONE DEPLETION
None
Date:
October 1, 2000
Creator:
HENSON, B. & ROBINSON, J.
System:
The UNT Digital Library