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Advanced combustion system for industrial boilers. Quarterly technical progress report, August 1987--October 1987
The purpose of this project is to develop an advanced coal-combustion system for industrial boilers. With the new combustion system, coal could be used to replace oil and possibly gas as fuel for many industrial boilers. The advanced combustion system is comprised of several parts: (1) A new burner-design concept for coal fuels, developed from the familiar gas turbine combustor-can designs that have proven efficient, reliable, durable, and safe for the combustion of liquid fuel oils. (2) A coal storage and dense-phase feed system for injecting clean, ultrafine pulverized coal into the burner at a low velocity. (3) An automatic control system based on feedback from low-cost automotive combustion-quality transducers. A cold flow model of an initial phase of the new burner design and the associated laser flow-visualization techniques were developed during this quarter. A series of modifications of the initial cold flow model will be tested to establish details of design for the new burner. Also a 200 hp firetube boiler has been installed and tested using number 2 oil as a fuel. This boiler will be used for future combustion testing with the new burner and ultrafine pulverized coal. Additionally an ultrafine-coal injector has been designed which will …
Date:
December 31, 1987
Creator:
Attig, R. C.; Foote, J. P.; Millard, W. P.; Schulz, R. J. & Wagoner, C. L.
Object Type:
Report
System:
The UNT Digital Library
Advances in technology for the construction of deep-underground facilities
The workshop was organized in order to address technological issues important to decisions regarding the feasibility of strategic options. The objectives of the workshop were to establish the current technological capabilities for deep-underground construction, to project those capabilities through the compressed schedule proposed for construction, and to identify promising directions for timely allocation of existing research and development resources. The earth has been used as a means of protection and safekeeping for many centuries. Recently, the thickness of the earth cover required for this purpose has been extended to the 2,000- to 3,000-ft range in structures contemplated for nuclear-waste disposal, energy storage, and strategic systems. For defensive missile basing, it is now perceived that the magnitude of the threat has increased through better delivery systems, larger payloads, and variable tactics of attack. Thus, depths of 3,000 to 8,000 ft are being considered seriously for such facilities. Moreover, it appears desirable that the facilities be operational (if not totally complete) for defensive purposes within a five-year construction schedule. Deep excavations such as mines are similar in many respects to nearsurface tunnels and caverns for transit, rail, sewer, water, hydroelectric, and highway projects. But the differences that do exist are significant. Major …
Date:
December 31, 1987
Creator:
unknown
Object Type:
Article
System:
The UNT Digital Library
The Albany News (Albany, Tex.), Vol. 112, No. 29, Ed. 1 Thursday, December 31, 1987
Weekly newspaper from Albany, Texas that includes local, county, and state news along with extensive advertising.
Date:
December 31, 1987
Creator:
Lucas, Donnie A.
Object Type:
Newspaper
System:
The Portal to Texas History
The Alto Herald and The Wells News 'N Views (Alto, Tex.), Vol. 92, No. 34, Ed. 1 Thursday, December 31, 1987
Weekly newspaper from Alto, Texas that includes local, state, and national news along with extensive advertising.
Date:
December 31, 1987
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Altus Times (Altus, Okla.), Vol. 65, No. 312, Ed. 1 Thursday, December 31, 1987
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 31, 1987
Creator:
Lomenick, Rick
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Antenna organization in green photosynthetic bacteria. Progress report, July 1, 1985--June 30, 1987
This project is concerned with the structure and function of the unique antenna system found in the green photosynthetic bacteria. The antenna system in these organisms is contained within a vesicle known as a chlorosome, which is attached to the cytoplasmic side of the cell membrane. Additional antenna pigments and reaction centers are contained in integral membrane proteins. Energy absorbed by the bacteriochlorophyll c (BChl c) pigments in the chlorosome is transferred via a ``baseplate`` array of BChl a antenna pigments into the membrane and to the reaction center. A schematic model of chlorosome structure is shown. This project is aimed at increasing our understanding of the organization of the pigments in the chlorosome and how the antenna system functions.
Date:
December 31, 1987
Creator:
Blankenship, R. E.
Object Type:
Report
System:
The UNT Digital Library
Antenna organization in green photosynthetic bacteria. Progress report, March 1986--February 1987
This project is concerned with the structure and function of the unique antenna system found in the green photosynthetic bacteria. The antenna system in these organisms is contained within a vesicle known as a chlorosome, which is attached to the cytoplasmic side of the cell membrane. Additional antenna pigments and reaction centers are contained in integral membrane proteins. Energy absorbed by the bacteriochlorophyll c (BChl c) pigments in the chlorosome is transferred via a ``baseplate`` array of BChl a antenna pigments into the membrane and to the reaction center. This system is similar in some respects to the phycobilisome antenna system found in cyanobacteria and some types of algae, in that a membrane-associated structure absorbs light and transfers it to the membrane where conversion to chemical energy takes place. However, the overall structure, the type of pigments utilized and the nature of the proteins in these two types of membrane-associated antenna bodies are entirely different, and they clearly represent two independent evolutionary solutions to the problem of light collection and excitation transfer.
Date:
December 31, 1987
Creator:
Blankenship, R. E.
Object Type:
Report
System:
The UNT Digital Library
Archer County News (Archer City, Tex.), No. 53, Ed. 1 Thursday, December 31, 1987
Weekly newspaper from Archer City, Texas that includes local, state, and national news along with advertising.
Date:
December 31, 1987
Creator:
Lobpries, F. Mike & Lobpries, Fran
Object Type:
Newspaper
System:
The Portal to Texas History
The Baytown Sun (Baytown, Tex.), Vol. 66, No. 52, Ed. 1 Thursday, December 31, 1987
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
December 31, 1987
Creator:
Brown, Leon
Object Type:
Newspaper
System:
The Portal to Texas History
The Big Lake Wildcat (Big Lake, Tex.), Vol. 62, No. 53, Ed. 1 Thursday, December 31, 1987
Weekly newspaper from Big Lake, Texas that includes local, state and national news along with advertising.
Date:
December 31, 1987
Creator:
Werst, David
Object Type:
Newspaper
System:
The Portal to Texas History
The Bogata News (Bogata, Tex.), Vol. 77, No. 12, Ed. 1 Thursday, December 31, 1987
Weekly newspaper from Bogata, Texas that includes local, state, and national news along with advertising.
Date:
December 31, 1987
Creator:
Nichols, Nanalee & Nichols, Thomas
Object Type:
Newspaper
System:
The Portal to Texas History
The Canadian Record (Canadian, Tex.), Vol. 97, No. 53, Ed. 1 Thursday, December 31, 1987
Weekly newspaper from Canadian, Texas that includes local, state and national news along with extensive advertising.
Date:
December 31, 1987
Creator:
Ezzell, Ben & Ezzell, Nancy
Object Type:
Newspaper
System:
The Portal to Texas History
Castroville News Bulletin (Castroville, Tex.), Vol. 28, No. 53, Ed. 1 Thursday, December 31, 1987
Weekly newspaper from Castroville, Texas that includes local, state, and national news along with extensive advertising.
Date:
December 31, 1987
Creator:
Buckner, Luana
Object Type:
Newspaper
System:
The Portal to Texas History
Centrifugal slurry pump wear and hydraulic studies. Quarterly technical progress report for the period of 1 April 1987--30 June 1987
This report marks the fourth quarter of the third phase of the centrifugal slurry pump improvement program. The program was begun in 1982 to improve the operating life of centrifugal slurry pumps for coal liquefaction service. The first phase reviewed pilot plant experience with centrifugal slurry pumps and identified, with the help of a literature search, the critical design parameters and materials required for such improvement. The second phase encompassed extensive small-scale testing of several hydraulic design concepts and materials testing and selection - the results being incorporated in a prototype slurry pump design. This third phase of the work has included i) prototype slurry pump testing against a state-of-the-art coal liquefaction slurry pump, wherein substantial reduction of wear was obtained at 60% higher speed at the same head and flow rate therefore at 60% higher specific speed - and ii) an investigation as to whether still higher specific speed is possible. The prototype pump tested in (i) had a specific speed of 600. Another pump of this same design was re-fitted for investigation (ii) with a smaller impeller and associated liners so as to operate at a specific speed of 1000. Both the 600 and the 1000 impellers for …
Date:
December 31, 1987
Creator:
Cooper, P
Object Type:
Report
System:
The UNT Digital Library
Ceramic characterization
Objective of this task is to measure and characterize the ceramic properties (crystalline phase composition, grain boundaries, residual stresses) of a series of standard ceramic specimens to assist in developing international standards for ceramic characterization. This report describes electron microscopy of the microstructure and grain boundaries of ESK silicon carbide; supporting x-ray diffraction data for the bulk phase composition is included.
Date:
December 31, 1987
Creator:
Vaudin, M. D.; Fuller, E. R. Jr.; Cline, J. P. & Dragoo, A. L.
Object Type:
Article
System:
The UNT Digital Library
Ceramic decomposition under irradiation, 1987. Progress report
Our quantitative determinations of the decomposition of thin film and bulk ceramic materials during electron microscopy has shown that the radiation damage effect is a complex one depending dielectric and thermochemical properties. In low melting temperature glasses, for example, much of the activity is due to field enhanced diffusion of low atomic weight species. This is particularly true of bulk specimens and for the case of binary soda-borosilicate glass the sodium depletion in the SEM can be quantitatively described in terms of this effect. Studies with thin specimens of refractory carbides show that in these materials the carbon depletion is due to direct displacement processes and that here the electric fields give rise to recombination effects. The studies of ceramic thin films suitable for reference standards is continuing as a joint effort with the Rockwell Science Center. Work is in progress to describe the in plane crystallization that is observed in terms of the latent heat involved and the configurational entropy of the propagating interface.
Date:
December 31, 1987
Creator:
Howitt, D. G.
Object Type:
Report
System:
The UNT Digital Library
The Cherokeean. (Rusk, Tex.), Vol. 139, No. 47, Ed. 1 Thursday, December 31, 1987
Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.
Date:
December 31, 1987
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Chickasha Daily Express (Chickasha, Okla.), Vol. 96, No. 312, Ed. 1 Thursday, December 31, 1987
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 31, 1987
Creator:
Drew, Charles C.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Chickasha Star (Chickasha, Okla.), Vol. 85, No. 42, Ed. 1 Thursday, December 31, 1987
Weekly newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 31, 1987
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
[Clipping: Letters to the editor]
Photocopy of a newspaper article about the various responses to multiple Dallas issues, including trash finances, religion and politics, and gay rights.
Date:
December 31, 1987
Creator:
Highfill, Bryan; Tabor, Rose; Rice, Joseph A. Jr.; Martin, Lee & Tebedo, Terry
Object Type:
Clipping
System:
The UNT Digital Library
The Colony Courier (The Colony, Tex.), Vol. 12, No. 21, Ed. 1 Thursday, December 31, 1987
Weekly newspaper from The Colony, Texas that includes local news along with advertising.
Date:
December 31, 1987
Creator:
Blalock, Jack
Object Type:
Newspaper
System:
The Portal to Texas History
Community Geothermal Technology Program: Cloth dyeing by geothermal steam. An experiment in technology transfer from Japan to Hawaii, Final report
This was an experiment to test whether cloth dyeing using geothermal steam (already proven in Japan) would be feasible in Hawaii. Results: Using a fabricated steam vat, cotton, silk, and synthetic can be dyed; the resulting material received high grades for steadfastness and permanency under dye testing. Techniques that were successful in Matsukawa, were replicated in Puna. However, attempts to embed leaf patterns on cloth using natural leaves and to extract natural dyes from Hawaiian plants were unsuccessful; the color of natural dyes deteriorated in hours. But chemical dyes gave brilliant hues or shades, in contrast to those in Japan where the steam there gave subdued tones. It is concluded that geothermal dyeing can be a viable cottage industry in Puna, Hawaii.
Date:
December 31, 1987
Creator:
Furumoto, A. S.
Object Type:
Report
System:
The UNT Digital Library
Complete Bouguer gravity map of the Nevada Test Site and vicinity, Nevada
About 15,000 gravity stations were used to create the gravity map. Gravity studies at the Nevada Test Site were undertaken to help locate geologically favorable areas for underground nuclear tests and to help characterize potential high-level nuclear waste storage sites. 48 refs. (TEM)
Date:
December 31, 1987
Creator:
Healey, D. L.; Harris, R. N.; Ponce, D. A. & Oliver, H. W.
Object Type:
Report
System:
The UNT Digital Library
The Cotulla Record (Cotulla, Tex.), Ed. 1 Thursday, December 31, 1987
Weekly newspaper from Cotulla, Texas that includes local, state, and national news along with advertising.
Date:
December 31, 1987
Creator:
Fair, Wilton H., Jr.
Object Type:
Newspaper
System:
The Portal to Texas History