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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.
Object Type:
Report
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.
Object Type:
Report
System:
The UNT Digital Library
ADAPTIVE TETRAHEDRAL GRID REFINEMENT AND COARSENING IN MESSAGE-PASSING ENVIRONMENTS
A grid refinement and coarsening scheme has been developed for tetrahedral and triangular grid-based calculations in message-passing environments. The element adaption scheme is based on an edge bisection of elements marked for refinement by an appropriate error indicator. Hash-table/linked-list data structures are used to store nodal and element formation. The grid along inter-processor boundaries is refined and coarsened consistently with the update of these data structures via MPI calls. The parallel adaption scheme has been applied to the solution of a transient, three-dimensional, nonlinear, groundwater flow problem. Timings indicate efficiency of the grid refinement process relative to the flow solver calculations.
Date:
October 1, 2000
Creator:
Hallberg, J. & Stagg, A.
Object Type:
Article
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.
Object Type:
Report
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
Object Type:
Report
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.
Object Type:
Report
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.
Object Type:
Report
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.
Object Type:
Report
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
Object Type:
Report
System:
The UNT Digital Library
Advances in Direct Methanol Fuel Cell Science & Technology at Los Alamos National Laboratory
None
Date:
October 1, 2000
Creator:
Gottesfeld, S.; Ren, X. & Al, Et
Object Type:
Article
System:
The UNT Digital Library
An AFM investigation of the interaction of chiral amino acids with the {l_brace}104{r_brace} face of calcite
In biomineralized tissue, Nature often uses a single crystal system to form tools with widely varied form and functionality. To accomplish this, organisms have developed methods to deterministically modify and control crystal habit, commonly creating shapes with lower symmetry than is possessed by the pure crystal. In this paper we use atomic force microscopy to investigate the effect of chiral amino acids on calcite growth. We show that the atomic steps and resultant macroscopic shape exhibit a lower symmetry that reflects the chirality of the amino acid. We use this result to constrain the possible stereospecific binding sites. We argue that the change in morphology is not due to the incorporation of the amino acid, but rather that it acts like a surfactant changing the energetics of the interface. These results suggest that the conventional paradigm for understanding the geometrical and chemical aspects of biomineralization in terms of stereochemical recognition should be expanded to capture the energetic controls that determine the mechanisms of mineral modification by biomolecules.
Date:
October 1, 2000
Creator:
Orme, C A; Noy, A; McBride, M T & DeYoreo, J J
Object Type:
Article
System:
The UNT Digital Library
The Age, Volume 23, Number 10, October 2000
Monthly publication containing information related to Chambers County, Texas, including current events of the Chambers County Historical Commission, the Wallisville Heritage Park, and the Chambers County historical and genealogical societies; reprinted newspaper articles about county events and citizens; and historical news and records.
Date:
October 2000
Creator:
Wallisville Heritage Park (Organization)
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
ALGORITHMIC TRANSFORMS IN THE IMPLEMENTATION OF K-MEANS CLUSTERING ON RECONFIGURABLE HARDWARE
None
Date:
October 1, 2000
Creator:
Estlick, Michael; Leeser, Miriam; Szymanski, John J. & Theiler, James
Object Type:
Article
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
Object Type:
Report
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
Object Type:
Report
System:
The UNT Digital Library
Altus Times (Altus, Okla.), Vol. 101, No. 173, Ed. 1 Sunday, October 1, 2000
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
October 1, 2000
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Alvin Sun-Advertiser (Alvin, Tex.), Vol. 109, No. 79, Ed. 1 Sunday, October 1, 2000
Weekly newspaper from Alvin, Texas that includes local, state, and national news along with advertising.
Date:
October 1, 2000
Creator:
Schwind, Jim & Holton, Kathleen
Object Type:
Newspaper
System:
The Portal to Texas History
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
Object Type:
Report
System:
The UNT Digital Library
American Indians celebrate heritage... Along the Powwow Trail, or Powwow: Dance of Life
Draft of an article about Indigenous American powwows that was published in the October 2000 issue of Texas Highways magazine.
Date:
2000-10~
Creator:
Mallory, Randy
Object Type:
Text
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.
Object Type:
Report
System:
The UNT Digital Library
ANOMALOUS EFFECTS OF SUBSTITUTIONAL ALLOYING ON THE MECHANICAL BEHAVIOR OF MOLYBDENUM DISILICIDE
None
Date:
October 1, 2000
Creator:
MISRA, A.; SHARIF, A. & AL, ET
Object Type:
Article
System:
The UNT Digital Library
THE APPLICATION OF HIGH TEMPERATURE SUPERCONDUCTORS TO UNDERGROUND COMMUNICATIONS
None
Date:
October 1, 2000
Creator:
REAGOR, D.
Object Type:
Report
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.
Object Type:
Report
System:
The UNT Digital Library
Archivos de Laredo: Index to the Municipal Correspondence 1825-1845 and Verbal Arbitrations and Decisions 1832-1842
Translation and summaries of materials from the Laredo Archives, held by St. Mary's University in San Antonio, Texas; the documents contain information related to municipal correspondence and legal decisions in Laredo.
Date:
October 2000
Creator:
Wood, Robert D.
Object Type:
Book
System:
The Portal to Texas History