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DEVELOPMENT OF IMPROVED CATALYSTS FOR THE SELECTIVE CATALYTIC REDUCTION OF NITROGEN OXIDES WITH HYDROCARBONS
Significant work has been done by the investigators on the cerium oxide-copper oxide based sorbent/catalysts for the combined removal of sulfur and nitrogen oxides from the flue gases of stationary sources. A relatively wide temperature window was established for the use of alumina-supported cerium oxide-copper oxide mixtures as regenerable sorbents for SO{sub 2} removal. Preliminary evaluation of these sorbents as catalysts for the selective reduction of NO{sub x} gave promising results with ammonia, but indicated low selectivity when methane was used as the reductant. Since the replacement of ammonia by another reductant is commercially very attractive, in this project, four research components will be undertaken. The investigation of the reaction mechanism, the first component, will help in the selection of promoters to improve the catalytic activity and selectivity of the sorbents in the SCR with methane. This will result in new catalyst formulations (second component). If this research is successful, the combined SO{sub 2}-NO{sub x} removal process based on alumina-supported copper oxide-ceria sorbent/catalysts will become very attractive for commercial applications. The objective of the third component of the project is to develop an alternative SCR process using another inexpensive fuel, residual fuel oil, instead of natural gas. This innovative proposal …
Date:
May 31, 2001
Creator:
Akyurtlu, Dr. Ates & Akyurtlu, Dr. Jale F.
Object Type:
Report
System:
The UNT Digital Library
LOW TEMPERATURE CATHODE SUPPORTED ELECTROLYTES
This project has three main goals: Thin Films Studies, Preparation of Graded Porous Substrates and Basic Electrical Characterization and testing of Planar Single Cells. Substantial progress has been made on both characterizing thin films as well as developing methods to produce films on nanoporous substrates. The results of electrical conductivity measurements on ZrO{sub 2}:16%Sc nanocrystalline thin films under controlled oxygen partial pressure and temperature are presented. The experimental data have been interpreted using a defect model, which describes the interaction between Sc and oxygen vacancies resulting in the formation of donor - (Sc{sub Zr} - V{sub o} - e){sup x} and acceptor - (Sc{sub Zr}-h){sup x} levels. From this the electronic and ionic contribution to the electrical transport has been determined and correlated with the band structure. These results suggest that ZrO{sub 2}:16%Sc possesses higher electronic conductivity than ZrO{sub 2}:16%Y, which dominates the total conductivity in reducing atmospheres. This is an important result since it indicates that Sc-YSZ maybe useful in the anode regions of the cell. We have made important breakthroughs on depositing dense Ceria films on to porous LSM substrates. In previous studies we have found that in order to produce a surface which is smooth enough to …
Date:
March 31, 2001
Creator:
Anderson, Harlan U.; Huebner, Wayne & Kosacki, Igor
Object Type:
Report
System:
The UNT Digital Library
Intact and Degraded Component Criticality Calculations of N Reactors Spent Nuclear Fuel
The objective of this calculation is to perform intact and degraded mode criticality evaluations of the Department of Energy's (DOE) N Reactor Spent Nuclear Fuel codisposed in a 2-Defense High-Level Waste (2-DHLW)/2-Multi-Canister Overpack (MCO) Waste Package (WP) and emplaced in a monitored geologic repository (MGR) (see Attachment I). The scope of this calculation is limited to the determination of the effective neutron multiplication factor (k{sub eff}) for both intact and degraded mode internal configurations of the codisposal waste package. This calculation will support the analysis that will be performed to demonstrate the technical viability for disposing of U-metal (N Reactor) spent nuclear fuel in the potential MGR.
Date:
January 31, 2001
Creator:
Angers, L.
Object Type:
Report
System:
The UNT Digital Library
Hazardous Waste Code Determination for First/Second-Stage Sludge Waste Stream (IDCs 001, 002, 800)
This document, Hazardous Waste Code Determination for the First/Second-Stage Sludge Waste Stream, summarizes the efforts performed at the Idaho National Engineering and Environmental Laboratory (INEEL) to make a hazardous waste code determination on Item Description Codes (IDCs) 001, 002, and 800 drums. This characterization effort included a thorough review of acceptable knowledge (AK), physical characterization, waste form sampling, chemical analyses, and headspace gas data. This effort included an assessment of pre-Waste Analysis Plan (WAP) solidified sampling and analysis data (referred to as preliminary data). Seventy-five First/Second-Stage Sludge Drums, provided in Table 1-1, have been subjected to core sampling and analysis using the requirements defined in the Quality Assurance Program Plan (QAPP). Based on WAP defined statistical reduction, of preliminary data, a sample size of five was calculated. That is, five additional drums should be core sampled and analyzed. A total of seven drums were sampled, analyzed, and validated in compliance with the WAP criteria. The pre-WAP data (taken under the QAPP) correlated very well with the WAP compliant drum data. As a result, no additional sampling is required. Based upon the information summarized in this document, an accurate hazardous waste determination has been made for the First/Second-Stage Sludge Waste Stream.
Date:
January 31, 2001
Creator:
Arbon, R.E.
Object Type:
Report
System:
The UNT Digital Library
15th Street News (Midwest City, Okla.), Vol. 31, No. 1, Ed. 1 Friday, August 31, 2001
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
August 31, 2001
Creator:
Baldwin, Alisha
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
New Silicotitanate Waste Forms; Development and Characterization
The objective of this program is to identify new waste forms and disposal strategies specific to crystalline silicotitanate (CST) secondary waste generated from Cs and Sr ion exchange processes. Waste forms developed in this work will offer an alternative to current disposal plans. The goals of the program are to reduce the costs associated with CST waste disposal, to minimize the risk of contamination to the environment during CST processing, and to provide DOE with technical alternatives for CST disposal. The technical objectives of the proposed work are to fully characterize the phase relationships, structures, and thermodynamic and kinetic stabilities of CST waste forms and to establish a sound technical basis for understanding key waste form properties such as melting temperatures and aqueous durability, based on an in-depth understanding of waste form structures and thermochemistry.
Date:
December 31, 2001
Creator:
Balmer, Mari Lou; nenoff, Tina; Navrotsky, Alexandra & Su, Yali
Object Type:
Report
System:
The UNT Digital Library
A worldsheet description of large N{sub c} quantum field theory
None
Date:
October 31, 2001
Creator:
Bardakci, Korkut & Thorn, Charles B.
Object Type:
Article
System:
The UNT Digital Library
Test Plan for the Demonstration of Geophysical Techniques for Single-Shell Tank Leak Detection at the Hanford Mock Tank Site: Fiscal Year 2001
As part of the Leak Detection, Monitoring and Mitigation (LDMM) program conducted by CH2M HILL 105-A during FY 2001. These tests are being conducted to assess the applicability of these methods (Electrical Resistance Tomography [ERT], High Resolution Resistivity [HRR], Cross-Borehole Seismography [XBS], Cross-Borehole Radar [XBR], and Cross-Borehole Electromagnetic Induction [CEMI]) to the detection and measurement of Single Shell Tank (SST) leaks into the vadose zone during planned sluicing operations. The testing in FY 2001 will result in the selection of up to two methods for further testing in FY 2002. In parallel with the geophysical tests, a Partitioning Interwell Tracer Test (PITT) study will be conducted simultaneously at the Mock Tank to assess the effectiveness of this technology in detecting and quantifying tank leaks in the vadose zone. Preparatory and background work using Cone Penetrometer methods (CPT) will be conducted at the Mock Tank site and an adjacent test area to derive soil properties for groundtruthing purposes for all methods.
Date:
July 31, 2001
Creator:
Barnett, Brent; Gee, Glendon W & Sweeney, Mark D
Object Type:
Report
System:
The UNT Digital Library
Test Plan for the Demonstration of Geophysical Techniques for Single-Shell Tank Leak Detection at the Hanford Mock Tank Site: Fiscal Year 2001
As part of the Leak Detection, Monitoring and Mitigation (LDMM) program conducted by CH2M HILL 105-A during FY 2001. These tests are being conducted to assess the applicability of these methods (Electrical Resistance Tomography [ERT], High Resolution Resistivity [HRR], Cross-Borehole Seismography [XBS], Cross-Borehole Radar [XBR], and Cross-Borehole Electromagnetic Induction [CEMI]) to the detection and measurement of Single Shell Tank (SST) leaks into the vadose zone during planned sluicing operations. The testing in FY 2001 will result in the selection of up to two methods for further testing in FY 2002. In parallel with the geophysical tests, a Partitioning Interwell Tracer Test (PITT) study will be conducted simultaneously at the Mock Tank to assess the effectiveness of this technology in detecting and quantifying tank leaks in the vadose zone. Preparatory and background work using Cone Penetrometer methods (CPT) will be conducted at the Mock Tank site and an adjacent test area to derive soil properties for groundtruthing purposes for all methods.
Date:
July 31, 2001
Creator:
Barnett, D. Brent; Gee, Glendon W. & Sweeney, Mark D.
Object Type:
Report
System:
The UNT Digital Library
DEVELOPING STATE POLICIES SUPPORTIVE OF BIOENERGY DEVELOPMENT
Working within the context of the Southern States Biobased Alliance (SSBA) and with officials in each state, the Southern States Energy Board (SSEB) is identifying bioenergy-related policies and programs within each state to determine their impact on the development, deployment or use of bioenergy. In addition, SSEB will determine which policies have impacted industry's efforts to develop, deploy or use biobased technologies or products. As a result, SSEB will work with the Southern States Biobased Alliance to determine how policy changes might address any negative impacts or enhance positive impacts.
Date:
October 31, 2001
Creator:
Baskin, Kathryn
Object Type:
Report
System:
The UNT Digital Library
DEVELOPING STATE POLICIES SUPPORTIVE OF BIOENERGY DEVELOPMENT
Working within the context of the Southern States Biobased Alliance (SSBA) and with officials in each state, the Southern States Energy Board (SSEB) is identifying bioenergy-related policies and programs within each state to determine their impact on the development, deployment or use of bioenergy. In addition, SSEB will determine which policies have impacted industry's efforts to develop, deploy or use biobased technologies or products. As a result, SSEB will work with the Southern States Biobased Alliance to determine how policy changes might address any negative impacts or enhance positive impacts.
Date:
July 31, 2001
Creator:
Baskin, Kathryn
Object Type:
Report
System:
The UNT Digital Library
Update on Optical Design of Adaptive Optics System at Lick Observatory
In 1999, we presented our plan to upgrade the adaptive optics (AO) system on the Lick Observatory Shane telescope (3m) from a prototype instrument pressed into field service to a facility instrument. This paper updates the progress of that plan and details several important improvements in the alignment and calibration of the AO bench. The paper also includes a discussion of the problems seen in the original design of the tip/tilt (t/t) sensor used in laser guide star mode, and how these problems were corrected with excellent results.
Date:
July 31, 2001
Creator:
Bauman, B. J.; Gavel, D. T.; Waltjen, K. E.; Freeze, G. J.; Hurd, R. L.; Gates, E. I. et al.
Object Type:
Article
System:
The UNT Digital Library
The Colony Courier-Leader (The Colony, Tex.), Vol. 20, No. 16, Ed. 1 Thursday, May 31, 2001
Weekly newspaper from The Colony, Texas that includes local, state, and national news along with advertising.
Date:
May 31, 2001
Creator:
Beesley, Tom
Object Type:
Newspaper
System:
The Portal to Texas History
Micromachined VLSI 3D electronics. Final report for period September 1, 2000 - March 31, 2001
The phase I program investigated the construction of electronic interconnections through the thickness of a silicon wafer. The novel aspects of the technology are that the length-to-width ratio of the channels is as high as 100:1, so that the minimum amount of real estate is used for contact area. Constructing a large array of these through-wafer interconnections will enable two circuit die to be coupled on opposite sides of a silicon circuit board providing high speed connection between the two.
Date:
March 31, 2001
Creator:
Beetz, C.P.; Steinbeck, J. & Hsueh, K.L.
Object Type:
Report
System:
The UNT Digital Library
NETL-EERC ENVIRONMENTAL MANAGEMENT COOPERATIVE AGREEMENT
This final report summarizes the accomplishments of the 6-year Environmental Management Cooperative Agreement (EMCA) between the Energy and Environmental Research Center (EERC), a nonprofit, contract-supported unit of the University of North Dakota, and the U.S. Department of Energy (DOE) National Energy Technology Laboratory (NETL). The first portion of the report summarizes EMCA's structure, activities, and accomplishments. The appendix contains profiles of the individual EMCA tasks. Detailed descriptions and results of the tasks can be found separately in published Final Topical Reports. EMCA (DOE Contract No. DE-FC21-94MC31388) was in place from the fall of 1994 to the summer of 2001. Under EMCA, approximately $5.4 million was applied in three program areas to expedite the commercialization of 15 innovative technologies for application in DOE's EM Program ($3.8 million, or 69% of funds), provide technical support to the Deactivation and Decommissioning Focus Area (DDFA; $1.04 million, or 19% of funds), and provide for the coordination of the EMCA activities ($0.62 million, or 11% of funds). The following sections profile the overall accomplishments of the EMCA program followed by a summary of the accomplishments under each of the EMCA areas: commercialization, DDFA technical support, and management. Table 1 provides an overview of EMCA, including …
Date:
July 31, 2001
Creator:
Behr-Andres, Christina B. & Daly, Daniel J.
Object Type:
Report
System:
The UNT Digital Library
Energy in 2001: Crisis Again?
This report deals with changes in the national energy picture since the early 1990s, when Congress last dealt at length with energy policy. It reviews the problem areas and discusses differing views on how to deal with the energy situation in the long run. A summary of some current legislative initiatives is also given.
Date:
July 31, 2001
Creator:
Behrens, Carl E.
Object Type:
Report
System:
The UNT Digital Library
Jonathan Pollard: Background and Considerations for Presidential Clemency
None
Date:
January 31, 2001
Creator:
Best, Richard A., Jr. & Mark, Clyde R.
Object Type:
Report
System:
The UNT Digital Library
Oral History Interview with Anna Elisabeth Sullivan Strohacker, August 31, 2001
Interview with Anna Elisabeth "Betty" Sullivan Strohacker, a former Rations Board worker during WWII, from Kerrville, Texas. Betty talks about her family's migration to the area, her work on the Rations board, life on a ranch, and her activity in the Kerr County Historical Commission and the Republican Party.
Date:
August 31, 2001
Creator:
Bethel, Ann; Snodgrass, Clarabelle & Strohacker, Anna Elisabeth Sullivan
Object Type:
Text
System:
The Portal to Texas History
Oral History Interview with Jack and Frances Real Stevens, January 31, 2001
Interview with Jack and Frances Real Stevens, a ranching and former Navy couple from Kerrville, Texas. The couple describes their individual childhoods, growing up in town and on a ranch, as well as their travels around the world. Mr. and Mrs. Stevens also discuss their involvement with the Kerrville community. The interview includes a history of the Kerrville German Dance Club, on pages 2-4.
Date:
January 31, 2001
Creator:
Bethel, Ann; Snodgrass, Clarabelle; Stevens, Jack & Stevens, Frances Real
Object Type:
Text
System:
The Portal to Texas History
Oral History Interview with Jack and Frances Stevens, January 31, 2001
Interview with Jack and Frances Stevens from Kerr County. The interview includes their stories of growing up in Kerrville and of spending 30 years traveling the world together in the Navy before returning to Kerr County.
Date:
January 31, 2001
Creator:
Bethel, Ann; Stevens, Jack; Snodgrass, Clarabelle & Stevens, Franes
Object Type:
Video
System:
The Portal to Texas History
Superconducting Thallium Oxide and Mercury Oxide Film
Previously we reported on a two-layer electrodeposition process of thallium oxide superconductors that showed transport critical current density above 106 A/cm2 at 77 K in zero field. In this article, we report our effort to convert an electrodeposited thick film of (Tl,Bi,Pb)2(Sr,Ba)2Ca1Cu2Ox to (Hg,Bi,Pb)2(Sr,Ba)2Ca1Cu2Ox by the cation-exchange process. We are also reporting magneto-optical imaging data on Tl oxide superconductor films, which are compared with YBCO. Magneto-optical imaging provides insight into the nature of current flow in the Tl oxide superconductor, and thus, will help us to improve the critical current density in bulk high-temperature superconductor wire or tape.
Date:
January 31, 2001
Creator:
Bhattacharya, R. N.; Blaugher, R. D.; Yan, S. L.; Xing, Z. W.; Xie, Y. Y.; Wu, J. Z. et al.
Object Type:
Article
System:
The UNT Digital Library
Oral History Interview with Richard Bischoff, July 31, 2001
The National Museum of the Pacific War presents an interview with Richard Bischoff. Bischoff joined the Army in December of 1942. He served with the 607th Tank Destroyer Battalion. They arrived in England in April of 1944. They invaded Normandy on D-Day plus 2. Bischoff and his unit fought across France and into Germany during the summer and early winter of 1944. In December they participated in the Ardennes Campaign, ending the war near the Czechoslovakian border. Bischoff returned to the US and was discharged in December of 1945.
Date:
July 31, 2001
Creator:
Bischoff, Richard
Object Type:
Sound
System:
The Portal to Texas History
Oral History Interview with Richard Bischoff, July 31, 2001
The National Museum of the Pacific War presents an interview with Richard Bischoff. Bischoff joined the Army in December of 1942. He served with the 607th Tank Destroyer Battalion. They arrived in England in April of 1944. They invaded Normandy on D-Day plus 2. Bischoff and his unit fought across France and into Germany during the summer and early winter of 1944. In December they participated in the Ardennes Campaign, ending the war near the Czechoslovakian border. Bischoff returned to the US and was discharged in December of 1945.
Date:
July 31, 2001
Creator:
Bischoff, Richard
Object Type:
Text
System:
The Portal to Texas History
[A fax from Steven K. Cox]
Document of a faxed message from Steven K. Cox to Cheryll Martin. The message is written in an informal tone. Cox is requesting Cheryll for two full-page ads of a specific measurement for the Black Tie Dinner's 20th anniversary and the AIDS epidemic.
Date:
July 31, 2001
Creator:
Black Tie Dinner, Inc.
Object Type:
Text
System:
The UNT Digital Library