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An advanced control system for fine coal flotation. Fifth quarterly technical progress report, October 1, 1996--December 31, 1996
A model-based flotation control scheme is being implemented to achieve optimal performance in the handling and treatment of fine coal. The control scheme monitors flotation performance through on- line analysis of ash content. Then, based on the economic and metallurgical performance of the circuit, variables such as reagent dosage, pulp density and pulp level are adjusted using model-base control algorithms to compensate for feed variations and other process disturbances. Recent developments in sensor technology are being applied for on-line determination of slurry ash content. During the fifth quarter of this project, all work was on hold pending the final novation of the contract to Virginia Polytechnic Institute and State University.
Date:
March 4, 1997
Creator:
Adel, G. T. & Luttrell, G. H.
Object Type:
Report
System:
The UNT Digital Library
An advanced control system for fine coal flotation. Fourth quarterly technical progress report, July 1, 1996--September 30, 1996
A model-based flotation control scheme is being implemented to achieve optimal performance in the handling and treatment of fine coal. The control scheme monitors flotation performance through on-line analysis of ash content. Then, based on the economic and metallurgical performance of the circuit, variables such as reagent dosage, pulp density and pulp level are adjusted using model-based control algorithms to compensate for feed variations and other process disturbances. Recent developments in sensor technology are being applied for on-line determination of slurry ash content. During the fourth quarter of this project, a final attempt was made to calibrate a video-based ash analyzer for use in this application. It was concluded that the low ash content and the coarse particle size of the flotation tailings slurry at the Maple Meadow plant site made the video-based system unsuitable for this application. Plans are now underway to lease a nuclear-based analyzer as the primary sensor for this project.
Date:
March 4, 1997
Creator:
Adel, G. T. & Luttrell, G. H.
Object Type:
Report
System:
The UNT Digital Library
The Boerne Star (Boerne, Tex.), Vol. 93, No. 88, Ed. 1 Tuesday, November 4, 1997
Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date:
November 4, 1997
Creator:
Aldridge, Leon
Object Type:
Newspaper
System:
The Portal to Texas History
The Boerne Star (Boerne, Tex.), Vol. 93, No. 10, Ed. 1 Tuesday, February 4, 1997
Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date:
February 4, 1997
Creator:
Aldridge, Leon & D'Amico, Rob
Object Type:
Newspaper
System:
The Portal to Texas History
The Boerne Star (Boerne, Tex.), Vol. 93, No. 18, Ed. 1 Tuesday, March 4, 1997
Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date:
March 4, 1997
Creator:
Aldridge, Leon & D'Amico, Rob
Object Type:
Newspaper
System:
The Portal to Texas History
The Boerne Star (Boerne, Tex.), Vol. 93, No. 27, Ed. 1 Friday, April 4, 1997
Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date:
April 4, 1997
Creator:
Aldridge, Leon & D'Amico, Rob
Object Type:
Newspaper
System:
The Portal to Texas History
The Boerne Star (Boerne, Tex.), Vol. 93, No. 53, Ed. 1 Friday, July 4, 1997
Semiweekly newspaper from Boerne, Texas that includes local, state, and national news along with advertising.
Date:
July 4, 1997
Creator:
Aldridge, Leon & D'Amico, Rob
Object Type:
Newspaper
System:
The Portal to Texas History
Individuals with Disabilities Education Act Reauthorization Legislation: An Overview
This report provides an overview of IDEA and its reauthorization and describes the IDEA Amendments of 1997.
Date:
June 4, 1997
Creator:
Aleman, Steven R.
Object Type:
Report
System:
The UNT Digital Library
Individuals with Disabilities Education Act Reauthorization Legislation: An Overview
CRS Report for Congress entailing information about The Individuals with Disabilities Education Act (IDEA) reauthorization legislation. Topics include, legislation within the 105th Congress, local relief, educational improvements, allocation formulas, etc..
Date:
June 4, 1997
Creator:
Aleman, Steven R.
Object Type:
Report
System:
The UNT Digital Library
EM field and instrumentation diagnostics in support of the LFT&E HPM methodology testing
The Naval Air Warfare Center, China Lake, under the direction of the DOD LFT&E Office performed a series of HPM tests for the purpose of exercising the HPM methodology for LFT&E applications. An AH-1S Cobra helicopter was used as the canonical test bed. The Air Force Research Lab (formally Phillips Lab) provided the wide-band source and the Army Research Lab provided the narrow-band used in the tests. LLNL provided the EM diagnostics used at the site for both test series. Our mission was to measure the radiated field from the sources, measure the fields inside the helicopter and the coupling onto various signal lines inside the helicopter, and to monitor the various system signal levels for �bird health� purposes. These experiments were performed during June of 1997 and consisted of exposing the test bed to a series of narrow-band and wide-band pulses from HPM sources. This report covers the measured radiated fields, the fields inside the helicopter, and the coupled signal levels. The radiated fields were measured over a region which spans the physical body of the helicopter. The fields inside the helicopter and the coupled fields were measured using a series of probes inside the helicopter and connected to …
Date:
September 4, 1997
Creator:
Anderson, R. A. & Nelson, S. D.
Object Type:
Report
System:
The UNT Digital Library
[Clipping: May 3 elections vital to gays, advocates say, cont.]
Newspaper clipping concerning the Dallas City Council Elections.
Date:
April 4, 1997
Creator:
Asseo, Laurie
Object Type:
Clipping
System:
The UNT Digital Library
News Bulletin (Castroville, Tex.), Vol. 38, No. 36, Ed. 1 Thursday, September 4, 1997
Weekly newspaper from Castroville, Texas that includes local, state, and national news along with extensive advertising.
Date:
September 4, 1997
Creator:
Barnes, Thomas
Object Type:
Newspaper
System:
The Portal to Texas History
Hydrogen production costs -- A survey
Hydrogen, produced using renewable resources, is an environmentally benign energy carrier that will play a vital role in sustainable energy systems. The US Department of Energy (DOE) supports the development of cost-effective technologies for hydrogen production, storage, and utilization to facilitate the introduction of hydrogen in the energy infrastructure. International interest in hydrogen as an energy carrier is high. Research, development, and demonstration (RD and D) of hydrogen energy systems are in progress in many countries. Annex 11 of the International Energy Agency (IEA) facilitates member countries to collaborate on hydrogen RD and D projects. The United States is a member of Annex 11, and the US representative is the Program Manager of the DOE Hydrogen R and D Program. The Executive Committee of the Hydrogen Implementing Agreement in its June 1997 meeting decided to review the production costs of hydrogen via the currently commercially available processes. This report compiles that data. The methods of production are steam reforming, partial oxidation, gasification, pyrolysis, electrolysis, photochemical, photobiological, and photoelectrochemical reactions.
Date:
December 4, 1997
Creator:
Basye, L. & Swaminathan, S.
Object Type:
Report
System:
The UNT Digital Library
The Harper Herald (Harper, Tex.), Vol. 69, No. 5, Ed. 1 Tuesday, February 4, 1997
Weekly newspaper from Harper, Texas that includes local, state, and national news along with advertising.
Date:
February 4, 1997
Creator:
Bishop, Karen
Object Type:
Newspaper
System:
The Portal to Texas History
The Harper Herald (Harper, Tex.), Vol. 69, No. 9, Ed. 1 Tuesday, March 4, 1997
Weekly newspaper from Harper, Texas that includes local, state, and national news along with advertising.
Date:
March 4, 1997
Creator:
Bishop, Karen
Object Type:
Newspaper
System:
The Portal to Texas History
The Harper Herald (Harper, Tex.), Vol. 69, No. 43, Ed. 1 Tuesday, November 4, 1997
Weekly newspaper from Harper, Texas that includes local, state, and national news along with advertising.
Date:
November 4, 1997
Creator:
Bishop, Karen
Object Type:
Newspaper
System:
The Portal to Texas History
Analysis of Ten Selected Science and Technology Policy Studies
Since the end of the Cold War in the early 1990s, a number of reports have been prepared on a broad range of science and technology (S&T) policy issues, most notably dealing with national research and development (R&D) goals, priorities, and budgets, and university-government-industry relationships. This report discusses and analyzes ten of these S&T reports.
Date:
September 4, 1997
Creator:
Boesman, William C.
Object Type:
Report
System:
The UNT Digital Library
The Goldthwaite Eagle (Goldthwaite, Tex.), Vol. 106, No. 6, Ed. 1 Thursday, September 4, 1997
Weekly newspaper from Goldthwaite, Texas that includes local, state, and national news along with extensive advertising.
Date:
September 4, 1997
Creator:
Bridges, G. Frank & Bridges, Georgie
Object Type:
Newspaper
System:
The Portal to Texas History
The Goldthwaite Eagle (Goldthwaite, Tex.), Vol. 106, No. 19, Ed. 1 Thursday, December 4, 1997
Weekly newspaper from Goldthwaite, Texas that includes local, state, and national news along with extensive advertising.
Date:
December 4, 1997
Creator:
Bridges, G. Frank & Bridges, Georgie
Object Type:
Newspaper
System:
The Portal to Texas History
[Letter from The Lesbian Gay Rights Lobby of Texas and the Allan G. Calkin Fund to Al Daniels about lobbying]
Letter to Al Daniels from Peter Brooks of the Lesbian Gay Rights Lobby of Texas and the Allan G. Calkin Human Rights Education and Research Fund about lobbying and volunteering.
Date:
November 4, 1997
Creator:
Brooks, Peter
Object Type:
Letter
System:
The UNT Digital Library
Development of nondestructive evaluation techniques for DAM inspection. Progress report, January 1995 through August 1997
The Lawrence Livermore National Laboratory has concluded a two and a half year study on the development of an ultrasonic inspection system to inspect post stressed steel tendons on dams and flood gates. The inspection systems were part of a program for the California Department of Water Resources. The effort included the identification of the location and amount of corrosion damage to the tendons, identification of the cause of corrosion, and the technology for inhibiting corrosion. Several NDE methods for inspecting and quantifying damage to steel reinforced concrete water pipes were investigated and presented to the DWR for their consideration. The additional methods included Ground Penetrating RADAR, Electro- Potential Measurements, Infrared Technology, Pipe Inspection Crawlers (designed to travel inside pipelines and simultaneously report on the pipe condition as viewed by ultrasonic methods and video cameras from within the pipeline.) Reference to consultants hired by LLNL for similar on-site corrosion inspections were given to the DWR. The LLNL research into industries that have products to prevent corrosion resulted in the identification of an Innsbruck, Austria, company. This company claims to have products to permanently protect post- or pre-stressed tendons. The caveat is that the tendon protection system must be installed when …
Date:
September 4, 1997
Creator:
Brown, A. E. & Thomas, G. H.
Object Type:
Report
System:
The UNT Digital Library
PDJ Daily Journal (Perry, Okla.), Vol. 104, No. 220, Ed. 1 Tuesday, November 4, 1997
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
November 4, 1997
Creator:
Brown, Gloria
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
PDJ Daily Journal (Perry, Okla.), Vol. 104, No. 242, Ed. 1 Thursday, December 4, 1997
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 4, 1997
Creator:
Brown, Gloria
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Perry Daily Journal (Perry, Okla.), Vol. 104, No. 28, Ed. 1 Tuesday, February 4, 1997
Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 4, 1997
Creator:
Brown, Gloria
Object Type:
Newspaper
System:
The Gateway to Oklahoma History