Free-electron laser generation of VUV and x-ray radiation using a conditioned beam and ion-channel focusing (open access)

Free-electron laser generation of VUV and x-ray radiation using a conditioned beam and ion-channel focusing

The use of ion-focusing and a conditioned beam greatly enhances FEL gain in the VUV and Soft X-Ray range. The equations governing FEL amplification are derived and results of a linear analysis are noted. Numerical results, including 3D effects and having an order of magnitude improvement in gain, are presented for a 30 {Angstrom} example. 3 refs., 2 figs., 1 tab.
Date: August 30, 1991
Creator: Yu, Li-Hua (Brookhaven National Lab., Upton, NY (United States)); Sessler, A. & Whittum, D.H. (Lawrence Berkeley Lab., CA (United States))
Object Type: Article
System: The UNT Digital Library
Development of a coal quality expert (open access)

Development of a coal quality expert

This project will enhance the existing Coal Quality Information System (CQIS) database and Coal Quality Impact Model (CQIM) to allow confident assessment of the effects of cleaning on specific boiler cost and performance, as well as develop and validate a methodology, Coal Quality Expert (CQE) which allows accurate and detailed predictions of coal quality impacts on total power plant capital cost, operating cost, and performance based upon inputs from inexpensive bench-scale tests. The project consists of the following seven tasks: Project management; coal cleanability characterization; pilot-scale combustion testing; utility boiler field testing; CQIM completion and development of CQE specification; develop CQE; and, CQE workstation testing and validation. Progress is discussed. 1 fig., 3 tabs.
Date: August 30, 1991
Creator: unknown
Object Type: Report
System: The UNT Digital Library
Inventor and innovator pilot project program (open access)

Inventor and innovator pilot project program

The Commission for Economic Development in Orem (CEDO) has completed its pilot project: setting up an inventor organization, providing knowledgeable speakers for monthly meetings, and trying to assess and meet the needs of that group. Utah Valley Community College provided space for monthly inventor meetings. It was decided that the monthly meetings would be held as two-hour mini seminar sessions with qualified speakers. The college provided continuing education units free for attendance at the meetings. Results of two surveys of the group were analyzed. A meeting was held between CEDO and the college's Dean of the School of Business where it was decided that the group should be continued. The college will continue providing space for the monthly meetings and assisting with the attraction of additional qualified speakers. CEDO will continue to locate speakers, put on the monthly meetings publish the monthly newsletter and provide information and assistance for the group. It has been determined by CEDO that having a group'' with monthly speakers is only a pacification of the needs of inventors and innovators. This group is in dire need of specialized inventor ASSISTANCE on a no-cost or low-cost basis.
Date: August 30, 1991
Creator: Squire, D.W.
Object Type: Report
System: The UNT Digital Library
The demonstration of an advanced cyclone coal combustor, with internal sulfur, nitrogen, and ash control for the conversion of a 23 MMBTU/hour oil fired boiler to pulverized coal (open access)

The demonstration of an advanced cyclone coal combustor, with internal sulfur, nitrogen, and ash control for the conversion of a 23 MMBTU/hour oil fired boiler to pulverized coal

This work contains to the final report of the demonstration of an advanced cyclone coal combustor. Titles include: Chronological Description of the Clean Coal Project Tests,'' Statistical Analysis of Operating Data for the Coal Tech Combustor,'' Photographic History of the Project,'' Results of Slag Analysis by PA DER Module 1 Procedure,'' Properties of the Coals Limestone Used in the Test Effort,'' Results of the Solid Waste Sampling Performed on the Coal Tech Combustor by an Independent Contractor During the February 1990 Tests.'' (VC)
Date: August 30, 1991
Creator: Zauderer, B. & Fleming, E. S.
Object Type: Report
System: The UNT Digital Library
Molecular biological enhancement of coal desulfurization: Cloning and expression of the sulfoxide/sulfone/sulfonate/sulfate genes in Pseudomonads and Thiobacillae (open access)

Molecular biological enhancement of coal desulfurization: Cloning and expression of the sulfoxide/sulfone/sulfonate/sulfate genes in Pseudomonads and Thiobacillae

The DbtS{sup +} phenotype is defined as the selective ability to oxidize the sulfur in dibenzothiophene (DBT) successively to dibenzothiophene-5-oxide, dibenzosulfone, and, finally, either o, o'-biphenol or monohydroxybiphenyl. By using a fluorescent assay, many Pseudomonas putida isolates having a DbtS{sup +} phenotype have been obtained. The ability of the isolates to generate o, o'-biphenol was confirmed with HPLC shortly after the time of isolation. The broad-host-range plasmid, R68.45, was introduced from P. putida PRS 2003 into many soil isolates. The plasmid was able to mobilize the determinants for the DbtS{sup +} phenotype. Accordingly, R68.45 and the determinants of the phenotype could be transferred simultaneously form soil isolates to P. aeruginosa 27853. The DbtS{sup +} phenotype in the isolates and in P. aeruginosa 27853 has proven to be unstable. Whether the instability is genetic, physiological, some combination of these two, or is founded on some other phenomenon is not known. Fresh Gram-positive isolates with the DbtS{sup +} phenotype have been isolated using the sulfur bioavailability assay. The DbtS{sup +} phenotype in these isolates appears to be stable. The product of desulfurization of DBT of dibenzosulfone is monohydroxybiphenyl. The nature of the endproduct has been confirmed by HPLC, colorimetry, GC/mass spectroscopy, and …
Date: August 30, 1991
Creator: Krawiec, S.
Object Type: Report
System: The UNT Digital Library
The demonstration of an advanced cyclone coal combustor, with internal sulfur, nitrogen, and ash control for the conversion of a 23 MMBtu/hour oil fired boiler to pulverized coal (open access)

The demonstration of an advanced cyclone coal combustor, with internal sulfur, nitrogen, and ash control for the conversion of a 23 MMBtu/hour oil fired boiler to pulverized coal

The project objective was to demonstrate a technology which can be used to retrofit oil/gas designed boilers, and conventional pulverized coal fired boilers to direct coal firing, by using a patented sir cooled coal combustor that is attached in place of oil/gas/coal burners. A significant part of the test effort was devoted to resolving operational issues related to uniform coal feeding, efficient combustion under very fuel rich conditions, maintenance of continuous slag flow and removal from the combustor, development of proper air cooling operating procedures, and determining component materials durability. The second major focus of the test effort was on environmental control, especially control of SO{sub 2} emissions. By using staged combustion, the NO{sub x} emissions were reduced by around 3/4 to 184 ppmv, with further reductions to 160 ppmv in the stack particulate scrubber. By injection of calcium based sorbents into the combustor, stack SO{sub 2} emissions were reduced by a maximum of of 58%. (VC)
Date: August 30, 1991
Creator: Zauderer, B. & Fleming, E. S.
Object Type: Report
System: The UNT Digital Library
Texas Register, Volume 16, Number 65, Pages 4697-4761, August 30, 1991 (open access)

Texas Register, Volume 16, Number 65, Pages 4697-4761, August 30, 1991

A weekly publication, the Texas Register serves as the journal of state agency rulemaking for Texas. Information published in the Texas Register includes proposed, adopted, withdrawn and emergency rule actions, notices of state agency review of agency rules, governor's appointments, attorney general opinions, and miscellaneous documents such as requests for proposals. After adoption, these rulemaking actions are codified into the Texas Administrative Code.
Date: August 30, 1991
Creator: Texas. Secretary of State.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Inventor and innovator pilot project program. Final report (open access)

Inventor and innovator pilot project program. Final report

The Commission for Economic Development in Orem (CEDO) has completed its pilot project: setting up an inventor organization, providing knowledgeable speakers for monthly meetings, and trying to assess and meet the needs of that group. Utah Valley Community College provided space for monthly inventor meetings. It was decided that the monthly meetings would be held as two-hour mini seminar sessions with qualified speakers. The college provided continuing education units free for attendance at the meetings. Results of two surveys of the group were analyzed. A meeting was held between CEDO and the college`s Dean of the School of Business where it was decided that the group should be continued. The college will continue providing space for the monthly meetings and assisting with the attraction of additional qualified speakers. CEDO will continue to locate speakers, put on the monthly meetings publish the monthly newsletter and provide information and assistance for the group. It has been determined by CEDO that having a ``group`` with monthly speakers is only a pacification of the needs of inventors and innovators. This group is in dire need of specialized inventor ASSISTANCE on a no-cost or low-cost basis.
Date: August 30, 1991
Creator: Squire, D. W.
Object Type: Report
System: The UNT Digital Library
NO{sub x} Abatement Pilot Plant 90-day test results report (open access)

NO{sub x} Abatement Pilot Plant 90-day test results report

High-level radioactive liquid wastes produced during nuclear fuel reprocessing at the Idaho Chemical Processing Plant are calcined in the New Waste Calcining Facility (NWCF) to provide both volume reduction and a more stable waste form. Because a large component of the HLW is nitric acid, high levels of oxides of nitrogen (NO{sub x}) are produced in the process and discharged to the environment via the calciner off-gas. The NO{sub x} abatement program is required by the new Fuel Processing Restoration (FPR) project permit to construct to reduce NO{sub x} emissions from the NWCF. Extensive research and development has indicated that the selective catalytic reduction (SCR) process is the most promising technology for treating the NWCF off-gas. Pilot plant tests were performed to determine the compatibility of the SCR process with actual NWCF off-gas. Test results indicate that the SCR process is a viable method for abating the NO{sub x} from the NWCF off-gas. Reduction efficiencies over 95% can be obtained, with minimal amounts of ammonia slip, provided favorable operating conditions exist. Two reactors operated with series flow will provide optimum reduction capabilities. Typical operation should be performed with a first reactor stage gas space velocity of 20,000 hr{sup {minus}1} and …
Date: August 30, 1991
Creator: McCray, J. A. & Boardman, R. D.
Object Type: Report
System: The UNT Digital Library
Z degree yields hadrons in SDC (open access)

Z degree yields hadrons in SDC

We report on a study of hadronic Z{degrees} decays at high P{sub t}(P{sub t}>500 GeV/c), at 40 TeV CM energy. Our goal here is to understand the effects of the kinematics of Z{degrees} decay, especially the Lorentz boost, on detection issues. We used an ISAJET sample of Drell Yan events, requiring the Z{degrees} to have pseudorapidity ({eta}) in (-1.5,1.5) and P{sub t}>500 GeV/c. ISAJET forces the Z{degrees} to decay to two primary partons, which then cascade by gluon and quark emission to stable hadrons. We excluded Z{degrees} {yields} {nu}{bar {nu}} decays. In about 10% of the hadronic decays, significant energy is lost due to neutrino emission from heavy quarks, so that the hadronic mass is significantly less than the Z{degrees} mass generated; these events were not explicitly removed. We treated muons like other hadrons, assuming that high P{sub t} muons could be identified and corrected for. For this study we retained only the stable daughter particles in Z{degrees} decay, labelled according to their parton parentage ( Jet 1 or 2''). We ignored the particles from the underlying event and from other final state jets. (These contributions, along with other non-Z{degrees} noise'', can be explicitly added back for relevant studies.) Finally, …
Date: August 30, 1991
Creator: Wicklund, A. B.
Object Type: Report
System: The UNT Digital Library
Texas Parks & Wildlife News, August 30, 1991 (open access)

Texas Parks & Wildlife News, August 30, 1991

Weekly newsletter discussing natural resources, parks, hunting and fishing, and other information related to the outdoors in Texas.
Date: August 30, 1991
Creator: Texas. Parks and Wildlife Department.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History