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Regulation of coal polymer degradation by fungi. Eighth quarterly report, [January--March 1996]

Description: Progress is reported on solubilization of low-rank coal by enzyme activity derived from Trametes versicolor or P. chrysosporium. Specifically during the reporting period efforts were directed towards the determining the effect of pH on solubilization of leonardite, the role of laccase in low coal solubilization and metabolism, the decolorization of soluble coal macromolecule by P. chrysosprium and T. versicolor in solid agar gel, and the solubilization of low rank coal in slurry cultures and solid phase reactors.
Date: July 28, 1996
Creator: Irvine, R.L. & Bumpus, J.A.
Partner: UNT Libraries Government Documents Department

Regulation of coal polymer degradation by fungi. Eighth quarterly report, [April--June 1996]

Description: This project addresses the solubilization of low-rank coal (leonardite) by lignin degrading fungi. During this reporting period efforts were focused on determining the effect of pH on coal solubilization by oxalate ion and other biologically important compounds that might function as metal chelators, on the role of laccase in coal solubilization and metabolism, on decolorization of soluble coal macromolecule by Phanerochaete chrysosporium and T. versicolor in solid agar media, and on solubilization of coal in slurry cultures and solid phase reactors.
Date: July 28, 1996
Creator: Irvine, R.L. & Bumpus, J.A.
Partner: UNT Libraries Government Documents Department

45-Day safety screening results for tank 241-U-102, push mode cores 143 and 144

Description: This document is the 45-day report deliverable for tank 241-U-102 push mode core segments collected between April 16, 1996 and May 6, 1996 and received by the 222-S Laboratory between April 17, 1996 and May 8, 1996. The segments were subsampled and analyzed in accordance, with the Tank 241-U-102 Push Mode Core Sampling and analysis Plan (TSAP) (Hu, 1996) and the Safety Screening Data Quality Objective (DQO) (Dukelow, et al., 1995). The analytical results are included in Table 1. Attachment I is a cross reference to relate the tank farm identification numbers to the 222-S Laboratory LabCore sample numbers. The subsamples generated in the laboratory for analysis are identified in these diagrams with their sources shown. The diagram identifying the hydrostatic head fluid (HHF) blank is also included, Primary safety screening results and the raw data from Differential Scanning Calorimetry (DSC) and thermogravimetric analysis (TGA) analyses are included in this report. Two of the samples submitted for DSC analysis exceeded notification limits as stated in the Safety Screening DQO (Dukelow, et al., 1995). Cyanide analysis was requested on these samples and a Reactive System Screening Tool analysis was requested for the sample exhibiting the highest exothenn in accordance with the TSAP (Hu, 1996). The results for these analyses will be reported in a revision to this document.
Date: June 28, 1996
Creator: Steen, F.H.
Partner: UNT Libraries Government Documents Department

Engineering development of advanced coal-fired low-emission boiler systems. Technical progress report number 14, January--March, 1996

Description: The Project is under budget and generally on schedule. The current status is shown in the Milestone Schedule Status Report included as Appendix A. Task 7--Component Development and Optimization and Task 11--Subsystem Test Operation and evaluation are shown to be slightly behind schedule. Also, addition of Kalina technology may delay completion of Task 8. However, Phase 2 will be completed on schedule. The Project and plans for the POCTF were presented to the Richmond Power and Light Board of Directors. Technology transfer activities included delivering papers at two conferences, submitting paper abstracts for two other conferences and organizing a Technical Session for a conference. Under Task 7 the 200 acfm CeraMem filter test rig was installed at Richmond Power and Light and testing commenced. Low-NO{sub x} firing system work was essentially completed. In Task 8 integrating and optimizing the performance and design of the boiler, turbine/generator and heat exchangers of the Kalina cycle is proceeding but it has required much more time than anticipated. Preliminary designs of this equipment are nearly complete. Plant design and licensing activities will restart in April. The test designs and plan created in Task 9 were previously submitted and approved, although the plan for the 5,000 acfm CeraMem filter test will be updated following completion of the 200 acfm test. Task 10 work is nearly complete. The test rig for the 5,000 acfm CeraMem test has been shipped to the fabricator`s shop, inspected, cleaned and is being modified based on input from the 200 acfm testing. Task 11 work on the CeraMem filter was delayed and is expected to be started during the next reporting period. The second series of combustion testing of the low-NO{sub x} firing system was completed and the data is being analyzed. Early review indicates that 0.1 lb of NO{sub x}/million ...
Date: May 28, 1996
Partner: UNT Libraries Government Documents Department

Wear resistant composite structure of vitreous carbon containing convoluted fibers. Final report

Description: Energy Related Inventions Program Number 613 was a two year program to commercialize a unique new wear material, Metal Reinforced Carbon Composite, MRCC. The program was designed to manufacture sample components of MRCC for evaluation by potential users and manufacturers. As a result of the program Burton Technologies Inc. and Rotary Power International are forming a joint company to manufacture, market and license MRCC materials to a wide range of industries.
Date: May 28, 1996
Creator: Burton, R.G. & Burton, R.A.
Partner: UNT Libraries Government Documents Department

Methane coupling by membrane reactor. Quarterly technical progress report, March 25--June 24, 1996

Description: The experimental study was continued on methane oxidative coupling using an oxygen-permeable dense membrane reactor. The oxygen permeance through the dense membrane was measured and preliminary experiments were conducted with the catalytic membrane reactor. The oxygen permeance was found to be similar to that obtained earlier without catalyst packing. No C{sub 2} hydrocarbons were observed in the catalytic membrane reactor for methane coupling. In order to reduce the non-selective, total oxidation activity of the dense membrane material, the inner surface of the dense membrane tube was deposited by the sol-gel technique with BaCe{sub 0.6}Sm{sub 0.4}O{sub 3}, which is a catalytic, oxygen-conductive material without total oxidation catalytic activity. The dense membrane tube was examined by XRD before and after the deposition. Catalytic experiments with the coated dense membrane reactor were carried out and higher C{sub 2} selectivity was observed than with the co-feed reactor.
Date: August 28, 1996
Partner: UNT Libraries Government Documents Department

Regulation of coal polymer degradation by fungi. Ninth quarterly report, [July--September, 1996]

Description: Several investigations have demonstrated that oxalate anion secreted by fungi is able to mediate solubilization of leonardite, a highly oxidized lignite. We have studied oxalate mediated solubilization of several Argonne Premium Coals. Results showed that, relative to leonardite, oxalate solubilized minimal amounts of these coals.
Date: October 28, 1996
Creator: Irvine, R.L. & Bumpus, J.A.
Partner: UNT Libraries Government Documents Department

Methane coupling by membrane reactor. Quarterly technical progress report, December 25, 1995--March 24, 1996

Description: Methane oxidative coupling experiments were conducted in a packed-bed reactor using La/MgO catalyst. The results were in agreement with those reported in the literature. Oxygen permeability through an oxygen-conductive dense membrane was measured. The oxygen permeability was about 20% of the reported values and increased with the sweep flow rate of helium in the tube side. Blank runs under methane coupling conditions were carried out with no catalyst packed in the dense membrane tube. Nearly 100% CO{sub 2} selectivity was observed, suggesting that the membrane material is a facile total oxidation catalyst. After the experiment the membrane tube was analyzed by scanning electron microscopy.
Date: May 28, 1996
Partner: UNT Libraries Government Documents Department

Image degradation from surface scatter in EUV optics

Description: Synchrotron-based 13 nm measurements of scatter from individual mirrors and an assembled imaging system for Extreme Ultraviolet Lithography have been compared to a model of image formation in the presence of scatter. The theory uses a Power Spectral Density description of the constituent optics to describe modifications to the image due to scatter. Reasonable agreement between measurements and theory was obtained for both individual mirrors and the assembled system. 9 refs., 4 figs.
Date: May 28, 1996
Creator: Gaines, D.P.; Daly, T.P.; Stearns, D.G.; LaFontaine, B.; Sweeney, D.W. & Fuchs, D.
Partner: UNT Libraries Government Documents Department

Surface characterization of optics for EUV lithography

Description: The surface topography of optics fabricated for Extreme Ultraviolet Lithography has been measured using a combination of phase-measuring interferometry and atomic force microscopy. Power Spectral Densities were computed over spatial frequencies extending from 2.0{times}10{sup {minus}8} nm{sup {minus}1} to 7.7{times}10{sup {minus}2} nm{sup {minus}1}. Roughness values for frequencies greater than 1.0{times}10{sup {minus}6} were 0.64 nm rms for a spherical optic and 0.95 nm rms for an aspheric optic. These values are significantly larger than 0.088 nm rms, which as obtained using a spherical optic representative of current limits in surface polishing technology. 9 refs., 4 figs.
Date: May 28, 1996
Creator: Gaines, D.P.; Sweeney, D.W.; DeLong, K.W.; Vernon, S.P.; Baker, S.L.; Tichenor, D.A. et al.
Partner: UNT Libraries Government Documents Department

Why have we stopped research on liquid centrifugal separation

Description: Using high-temperature high-speed liquid centrifuges for lanthanides and actinides separation was originally proposed as a physical separation method in the Los Alamos ADTT/ATW concept [C. Bowman, LA-UR-92-1065 (1992)]. The authors investigated centrifugal separation in a concerted effort of experiments, theoretical analysis and numerical simulations. They discovered that owing to the ionic-composition-dependence of the sedimentation coefficients for the fission products and actinides, separation by grouping of molecular densities would not work in general in the molten salt environment. Alternatively the lanthanides and actinides could be transferred to a liquid metal carrier (e.g. bismuth) via reductive extraction and then separated by liquid centrifuges, but the material and technical challenges are severe. Meanwhile the authors have established that the reductive extraction procedure itself can be used for desired separations. Unlike conventional aqueous-based reprocessing technologies, reductive extraction separation uses only reagent (Li) that reconstitutes carrier salts (LiF-BeF{sub 2}) and a processing medium (Bi) that can be continuously recycled and reused, with a nearly-pure fission products waste stream. The processing units are compact and reliable, and can be built at relatively low cost while maintaining high throughput. Therefore the research effort on developing liquid centrifuges for separations in ADTT/ATW was terminated in late 1995. This paper will discuss the various aspects involved in reaching this decision.
Date: May 28, 1996
Creator: Li, N.
Partner: UNT Libraries Government Documents Department

Tank characterization report for single-shell tank 241-BX-107

Description: This study examined and assessed the status, safety issues, composition, and distribution of the wastes contained in the tank 241-BX-107. Historical and most recent information, ranging from engineering structural assessment experiments, process history, monitoring and remediation activities, to analytical core sample data, were compiled and interpreted in an effort to develop a realistic, contemporary profile for the tank BX-107 contents.
Date: February 28, 1996
Creator: Raphael, G.F.
Partner: UNT Libraries Government Documents Department

MCNP criticality validation and bias for LEU systems

Description: The bias in MCP calculations was evaluated for low enriched uranium (LEU) systems typical of N reactor fuel. A formula that includes the bias and its uncertainties is given to ensure that LEU systems are safely subcritical.
Date: October 28, 1996
Creator: Schmittroth, F. A.
Partner: UNT Libraries Government Documents Department

Progress on coupling UEDGE and Monte-Carlo simulation codes

Description: Our objective is to develop an accurate self-consistent model for plasma and neutral sin the edge of tokamak devices such as DIII-D and ITER. The tow-dimensional fluid model in the UEDGE code has been used successfully for simulating a wide range of experimental plasma conditions. However, when the neutral mean free path exceeds the gradient scale length of the background plasma, the validity of the diffusive and inertial fluid models in UEDGE is questionable. In the long mean free path regime, neutrals can be accurately and efficiently described by a Monte Carlo neutrals model. Coupling of the fluid plasma model in UEDGE with a Monte Carlo neutrals model should improve the accuracy of our edge plasma simulations. The results described here used the EIRENE Monte Carlo neutrals code, but since information is passed to and from the UEDGE plasma code via formatted test files, any similar neutrals code such as DEGAS2 or NIMBUS could, in principle, be used.
Date: August 28, 1996
Creator: Rensink, M.E. & Rognlien, T.D.
Partner: UNT Libraries Government Documents Department

Use of cloud observations and mesoscale meteorology models to evaluate and improve cloud parameterizations. Final technical progress report, December 1, 1991--September 30, 1996

Description: The main goal of this research effort is to improve methods for calculating cloud cover within climate models. Cloud cover observations are being used with standard meteorological observations to improve the ability to diagnose cloud cover in climate models. Until now, cloud cover and heights have been diagnosed from the US Air force RTNEPH and 3DNEPH archive, although recent CART measurements are also being analyzed. Improved cloud cover formulations have been compared with existing climate model algorithms. Recently, the authors are also refining and validating an innovative Single Column Model (SCM) cumulus parameterization for calculating heating and moistening tendencies, and precipitation rates attributable to subgrid-scale convection not resolved by climate models. This SCM will be tested and evaluated using tropical convective measurements (GATE) and the author will also use incoming measurements from the Oklahoma ARM site. Further development and testing of this SCM could improve the ability to predict convective effects in climate models. The author will quantify the influence of convection on cloud cover using convective measures derived from this SCM. The output of this research will be a family of validated algorithms for assessing cloud cover under a variety of stable, unstable, continental or oceanic conditions, and an improved cumulus parameterization scheme.
Date: December 28, 1996
Creator: Walcek, C.J.
Partner: UNT Libraries Government Documents Department

Conceptual Thermal Treatment Technologies Feasibility Study

Description: This report presents a conceptual Thermal Treatment Technologies Feasibility Study (FS) for the Savannah River Site (SRS) focusing exclusively on thermal treatment technologies for contaminated soil, sediment, or sludge remediation projects.
Date: February 28, 1996
Creator: Suer, A.
Partner: UNT Libraries Government Documents Department

Quarterly environmental radiological survey summary

Description: Routine radiological surveys are part of the near-facility environmental monitoring program which monitors and helps direct the reduction of the radiological areas at the Hanford Site. The routine radiological surveys are performed by the Southern Area Remediation Support Group and the Site Support Services Radiological Control Group as directed by Near- Field Monitoring. The surveys included in this program consist of inactive waste sites; outdoor radiological control areas; tank farm perimeters and associated diversion boxes, lift stations, and vent stations; perimeters of active or uncovered waste Bites such as burial grounds, retention basins, ponds, process trenches, and ditches; underground pipelines; and road and rail surfaces (Figures 1 through 10). This report provides a Bummary of the radiological surveys performed during the Third Quarter of 1996. The status of corrective actions required from current and past reports are also discussed. A waste site survey schedule, WHC-SP-0098-7, was developed by Near-Field Monitoring and reviewed by the Southern Area Remediation Support Group and the Site Support Services Radiological Control Group. Near-Field Monitoring reviews the radiological survey reports and files a copy for historical purposes and reference. Radiological conditions are tracked and trends noted. All sites are surveyed at least once each year. The survey frequencies for particular sites are based on site history, radiological conditions, and general maintenance. special surveys may be conducted at irregular frequencies if conditions warrant (e.g., growth of deep-rooted vegetation is noted at a waste site). Radiological surveys are conducted to detect surface contamination and document changes in vegetation growth, biological intrusion, erosion, and general site maintenance conditions. Survey data are compared with standards identified in WHC-CM-7-5, Environmental Comipliance, as well as previous surveys `to recognize possible trends, assess environmental impacts, and help determine where corrective actions are needed. Landlords of the sites found out of compliance may be ...
Date: October 28, 1996
Creator: McKinney, S. M.
Partner: UNT Libraries Government Documents Department

Configuration management program plan for Hanford site systems engineering

Description: This plan establishes the integrated management program for the evolving technical baseline developed through the systems engineering process. This configuration management program aligns with the criteria identified in the DOE Standard, DOE-STD-1073-93. Included are specific requirements for control of the systems engineering RDD-100 database, and electronic data incorporated in the database that establishes the Hanford Site Technical Baseline.
Date: March 28, 1996
Creator: Kellie, C.L.
Partner: UNT Libraries Government Documents Department

Gas characterization system software acceptance test report

Description: This document details the results of software acceptance testing of gas characterization systems. The gas characterization systems will be used to monitor the vapor spaces of waste tanks known to contain measurable concentrations of flammable gases.
Date: March 28, 1996
Creator: Vo, C.V.
Partner: UNT Libraries Government Documents Department

Final design review report for K basin dose reduction project

Description: The strategy for reducing radiation dose originating from radionuclides absorbed in the K East Basin concrete is to raise the pool water level to provide additional shielding. This report documents a final design review for cleaning/coating basin walls and modifying other basin components where appropriate. The conclusion of this review was that the documents developed constitute an acceptable design for the Dose Reduction Project.
Date: March 28, 1996
Creator: Blackburn, L.D.
Partner: UNT Libraries Government Documents Department

Reactivation of an idle lease to increase heavy oil recovery through application of conventional steam drive technology in a low dip slope and basin reservoir in the Midway-Sunset field, San Joaquin basin, California. Quarterly report, January 1--March 31, 1996

Description: This project will reactivate ARCO`s idle Pru Fee lease in the Midway-Sunset field, California and conduct a continuous steamflood enhanced oil recovery demonstration aided by an integration of modern reservoir characterization and simulation methods. The objectives of the project are: (1) to return the shut-in portion of the reservoir to commercial production; (2) to accurately describe the reservoir and recovery process; and (3) convey the details of this activity to the domestic petroleum industry, especially to other producers in California, through an aggressive technology transfer program. The producibility problems initially thought to be responsible for the low recovery in the Pru Fee property are: (a) the shallow dip of the bedding; (b) complex reservoir structure, (c) thinning pay zone; and (d) the presence of bottom water. The project is using tight integration of reservoir characterization and simulation modeling to evaluate the magnitude of and alternative solutions to these problems. Two main activities were brought to completion during the first quarter of 1996: (1) lithologic and petrophysical description of the core taken form the new well Pru 101 near the center of the demonstration site and (2) development of a stratigraphic model for the Pru Fee project area. In addition, the first phase of baseline cyclic steaming of the Pru Fee demonstration site was continued with production tests and formation temperature monitoring.
Date: June 28, 1996
Creator: Schamel, S.
Partner: UNT Libraries Government Documents Department

Ignition rate measurement of laser-ignited coals. Quarterly report, January 1, 1996--March 31, 1996

Description: Over the last several decades many experiments have been conceived to study the ignition of pulverized coal and other solid fuels. We are constructing a laser-based apparatus which offers several advantages over those currently in favor. Sieve-sized particles are dropped batch-wise into a laminar, upward-flow wind tunnel which is constructed with a quartz test section. The gas stream is not preheated. A single pulse from a Nd:YAG laser is focused through the tunnel and ignites several particles. The transparent test section and cool walls allow for application of two-color pyrometry to measure the particles` temperature history during ignition and combustion. Coals ranging in rank from lignites to low-volatile bituminous, and chars derived from these coals, will be studied in this project. For each fuel type, measurements of the ignition temperature under various experimental conditions (particle size and free-stream oxygen concentration), combined with a detailed analysis of the ignition process, will permit the determination of kinetic rate constants of ignition.
Date: April 28, 1996
Creator: Chen, J.C. & Kabadi, V.
Partner: UNT Libraries Government Documents Department