Utilization of coal associated minerals. Quarterly report No. 10, January 1-March 31, 1980 (open access)

Utilization of coal associated minerals. Quarterly report No. 10, January 1-March 31, 1980

In the preceding quarterly report, it was reported that while sampling the Solvent Refined Coal II (SRC II) pilot plant at Fort Lewis, Washington, the plant went down and vacuum bottoms waste material representing the minerals flow at the last steady state condition were obtained. This plant has been sampled again and samples of the incoming feed coal, sized coal and vacuum bottoms waste material were obtained. As part of our effort to trace the same mineral suite through mining, preparation and conversion, new samples of feed coal, cleaned coal and refuse were obtained from the District 4 commercial preparation plant. This preparation plant supplies coal to the SRC II pilot plant at Fort Lewis, Washington. A study of the thermal insulating properties of fired flyash based structural materials was completed and is included.
Date: July 15, 1980
Creator: Slonaker, J. F.; Buttermore, W. H.; Carlisle, J. A.; Durham, D. L.; Muter, R. B. & Alderman, J. K.
Object Type: Report
System: The UNT Digital Library
Structural and electronic studies of defects in amorphous silicon. Technical progress report, March-May 1980 (open access)

Structural and electronic studies of defects in amorphous silicon. Technical progress report, March-May 1980

Proton magnetic resonance data are presented for plasma-deposited amorphous Si:H as a function of annealing temperature up to 650/sup 0/C. The data indicate that hydrogen diffuses internally before major evolution occurs, that transfer of hydrogen occurs from a heavily clustered phase to a dilute phase coincident with evolution and that evolution occurs initially from the heavily clustered phase. Comparison with infrared data indicates that the heavily clustered phase can be either SiH/ sub x/t = 2,3) or SiH.
Date: July 15, 1980
Creator: Street, R. A.
Object Type: Report
System: The UNT Digital Library
Load Combination Program. Progress report No. 5, April 1 - June 30, 1980. Volume 1 (open access)

Load Combination Program. Progress report No. 5, April 1 - June 30, 1980. Volume 1

This document is a progress report on the Load Combination Program (LCP) covering the period April 1, 1980 through June 30, 1980. The report gives a general description of the program by project and tasks, together with financial summaries, technical reports generated, and meeting attendance. Two appendixes which discuss technical subjects are also included. 13 figs.
Date: July 15, 1980
Creator: Chou, C. K.; Lu, S. C.; Schwartz, M. W.; Dutton, J. C.; George, L. L.; Gilman, F. M. et al.
Object Type: Report
System: The UNT Digital Library
Texas Register, Volume 5, Number 53, Pages 2809-2878, July 15, 1980 (open access)

Texas Register, Volume 5, Number 53, Pages 2809-2878, July 15, 1980

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: July 15, 1980
Creator: Texas. Secretary of State.
Object Type: Journal/Magazine/Newsletter
System: The Portal to Texas History
Silicon web process development (open access)

Silicon web process development

Silicon dendritic web is a ribbon form of silicon produced from the melt without die shaping, and capable of fabrication into solar cells with greater than 15% AM1 conversion efficiency. This quarterly report describes the work carried out during the period April to June 1980, as part of Phase III of a DOE/JPL-sponsored effort to develop silicon web process technology compatible with the national goals for low cost photovoltaic output power. We have successfully demonstrated eight hours of silicon web growth with closed loop melt level control, a key contract milestone. The result was achieved using a feedback system in which the change in output from a laser melt level sensor was used to control the rate at which silicon pellets were fed to replace the material frozen into web crystal. The melt level was controlled to about +- 0.1mm, well within the range required for stable long term web growth. This is an important step toward the development of a fully automated silicon web growth machine. A second major highlight of this quarter was the completion of an engineering design for a semi-automated web growth machine embodying all the desired features developed so far as part of this program …
Date: July 15, 1980
Creator: Duncan, C. S.; Seidensticker, R. G.; McHugh, J. P.; Skutch, M. E. & Hopkins, R. H.
Object Type: Report
System: The UNT Digital Library
Tax cut proposals in the 96th congress (open access)

Tax cut proposals in the 96th congress

This report is about the tax cut proposals in the 96th Congress
Date: July 15, 1980
Creator: Newton, Cheryl Savage
Object Type: Report
System: The UNT Digital Library
Catalysts for upgrading coal-derived liquids. Quarterly report, April 1-June 30, 1980 (open access)

Catalysts for upgrading coal-derived liquids. Quarterly report, April 1-June 30, 1980

Five experimental runs were conducted in the newly constructed trickle-bed reactor. The experiments were designed to obtain data on zoned catalyst beds. This new reactor system demonstrated satisfactory performance in temperature, pressure and flow control. High desulfurization and denitrogenation were achieved on both catalysts tested at conditions of 815F, 1500 psig. These catalysts were a CoMo/Al and NiMo/Al. Zoned bed of 50-50 volume percent of the two catalysts tested revealed no advantages with respect to desulfurization, denitrogenation and activity decay. The level of nitrogen removal was initially high, but activity decay was significant over the operational interval of 100 hours. Two experimental runs were completed in the Catalyst Life Test Unit (CLTU) utilizing a liquid containing 50% Synthoil and 50% Raw Anthracene Oil. This fluid has a 0.54 weight percent sulfur and a 1.21 weight percent nitrogen. The catalyst used in this study was a Ni-Mo-Al/sub 2/O/sub 3/ (Shell 324). The objective of the experiments was to demonstrate the effect of diluting the catalyst bed with a small size inert particle to improve gas-liquid contact and reduce channeling. No difference could be distinguished between the use of particle sizes in the range of 0.25 to 1.00 mm diameter. One run …
Date: July 15, 1980
Creator: Crynes, B L
Object Type: Report
System: The UNT Digital Library