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553
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217
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30
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27
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22
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Oklahoma Publishing Company Photography Collection
670
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546
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503
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395
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271
Tocker Foundation Grant
229
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203
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103
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44
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Results:
2,809 - 2,830 of
2,830
Visiting people on a dairy farm.
Describes life on a dairy farm through the eyes of one Maryland family, the Schwartzbecks.
Date:
April 1981
Creator:
United States. Department of Agriculture.
Object Type:
Book
System:
The UNT Digital Library
[Warren Building, (East elevation)]
Photograph of the Warren Building (located at 211 East Moore) in Terrell, Texas.
Date:
April 1981
Creator:
Livingston, Katherine
Object Type:
Photograph
System:
The Portal to Texas History
Waste-to-energy compendium. Final report
A survey is made of 35 waste-to-energy recovery projects throughout the US. Included are nine refuse-derived fuel (RDF) production facilities, six RDF user facilities, two combined RDF production-user facilities, and 18 mass burning facilities with energy recovery. Only those facilities that are fully operational or those in advanced stages of startup and shakedown are surveyed. Information is provided on processing capacities, operation and maintenance problems, equipment specifications, capital and operating costs, and the current status of each facility. In addition, process flow schematics are provided for each of the nine RDF production plants and both RDF production-user plants. Unless otherwise indicated, the data in this report have been updated to October or November, 1980.
Date:
April 1, 1981
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Water flows from slotted pipes
Results of experiments and analyses that determine jet flow distribution from slotted pipes of dimensions typical for OC-OTEC evaporators or condensers are described. For a pipe with a 6.3-cm inside diameter and 0.64-cm wide slot, the measured and predicted jet flow was low and nearly parallel to the pipe at the entrance, and high and perpendicular to the pipe only near the closed end. Slot lengths ranged from 1.5 m to 4.6 m, and inlet flow rates varied from 6 kg/s to 17 kg/s. Friction reduces the pressure in the entrance and intermediate portions of the pipe, while the rapidly decelerating flow produces high pressure recovery as it approaches the closed end. In the region of high flow next to the closed end, the ratio of slot area (slot length times width) to pipe cross-sectional area is less than two. To use a slotted pipe for generating falling jets in an OC-OTEC plant, the slot length should be 1 m or less (for a pipe with a 6.3-cm inside diameter and a 0.64-cm wide slot).
Date:
April 1, 1981
Creator:
Olson, D.A.
Object Type:
Report
System:
The UNT Digital Library
Water inflow into boreholes during the Stripa heater experiments
During the operation of three in-situ heater experiments at Stripa, Sweden, groundwater flowed into many of the instrumentation and heater boreholes. These flows were recovered and measured routinely. The records of water inflow indicate two origins: inflow attributed to local hydrological pressure gradients, and water migration from cracks closing under the rapidly increasing, thermal-induced stress changes. The latter component appeared as a main pulse that occurred when the heaters were turned on, and lasted about 30 to 40 days, steadily declining over the next several months, and decreasing sharply when heater power was decreased or stopped. The magnitude of the total inflow per hole ranged over more than five decades, from 0.1 to over 10,000 liters over the 500 to 600 day time periods. When plotted against the logarithm of total volume, the frequency distribution displays a normal curve dependence with a mean of approximately 10 liters. Of this amount, 1 to 2 liters of flow into 38-mm-diam boreholes accompanied an increase in applied heat load. These amounts are compatible with rock porosities of a fraction of one percent. Inflow into the 3.6 and 5.0 kW heater holes peaked within 3 to 6 days after heater turn on, then declined …
Date:
April 1, 1981
Creator:
Nelson, P. H.; Rachiele, R.; Remer, J. S. & Carlsson, H.
Object Type:
Report
System:
The UNT Digital Library
Water Resources of Upper Separation Creek Basin, South-Central Wyoming
The report provides an evaluation of the water resources in a Wyoming Creek basin before the start of large-scale coal mining. It contains maps, graphs, and tables.
Date:
April 1981
Creator:
Larson, L. R. & Zimmerman, E. A.
Object Type:
Report
System:
The UNT Digital Library
[Weed Quadrangle: Average Record Data Listings]
Average record data listings taken during aerial gamma-ray and magnetic surveys of the Weed quadrangle in California.
Date:
April 1981
Creator:
unknown
Object Type:
Dataset
System:
The UNT Digital Library
[Weed Quadrangle: Single Record Data Listings]
Single record data listings taken during aerial gamma-ray and magnetic surveys of the Weed quadrangle in California.
Date:
April 1981
Creator:
unknown
Object Type:
Dataset
System:
The UNT Digital Library
[Welder House]
Photograph of the Welder House (located at 307 S William) in Victoria, Texas.
Date:
April 1, 1981
Creator:
Texas Historical Commission
Object Type:
Photograph
System:
The Portal to Texas History
[Welder House]
Photograph of the Welder House (located at 307 S William) in Victoria, Texas.
Date:
April 1, 1981
Creator:
Texas Historical Commission
Object Type:
Photograph
System:
The Portal to Texas History
[Welder House]
Photograph of the Welder House (located at 307 S William) in Victoria, Texas.
Date:
April 1, 1981
Creator:
Texas Historical Commission
Object Type:
Photograph
System:
The Portal to Texas History
[Welder House]
Photograph of the Welder House (located at 307 S William) in Victoria, Texas.
Date:
April 1, 1981
Creator:
Texas Historical Commission
Object Type:
Photograph
System:
The Portal to Texas History
[Welder House]
Photograph of the Welder House (located at 307 S William) in Victoria, Texas.
Date:
April 1, 1981
Creator:
Texas Historical Commission
Object Type:
Photograph
System:
The Portal to Texas History
[Welder House]
Photograph of the Welder House (located at 307 S William) in Victoria, Texas.
Date:
April 1, 1981
Creator:
Texas Historical Commission
Object Type:
Photograph
System:
The Portal to Texas History
[West's Pharmacy]
Photograph of the West's Pharmacy (located at 109 E 6th) in Plainview, Texas.
Date:
April 1, 1981
Creator:
Texas Historical Commission
Object Type:
Photograph
System:
The Portal to Texas History
[White-Aiken House]
Photograph of the White-Aiken House (located at IH35, 1mi N. Salado) in Salado, Texas.
Date:
April 1, 1981
Creator:
Texas Historical Commission
Object Type:
Photograph
System:
The Portal to Texas History
[Wilkes Antiques (Commercial Building)]
Photograph of the Wilkes Antiques (Commercial Building) in Salado, Texas.
Date:
April 1, 1981
Creator:
Texas Historical Commission
Object Type:
Photograph
System:
The Portal to Texas History
[Wilkes Antiques (Commercial Building)]
Photograph of the Wilkes Antiques (Commercial Building) in Salado, Texas.
Date:
April 1, 1981
Creator:
Texas Historical Commission
Object Type:
Photograph
System:
The Portal to Texas History
Wilsonville SRC-I pilot plant: I. Fractionation area corrosion studies; II. Hot vs. normal separation mode of operation
Extensive corrosion studies in solvent recovery columns have been done with different coals (mainly Kentucky number 9 Lafayette, Dotiki and Fies). Sodium carbonate (0.1 to 1.1% of coal) was added as neutralizer to control corrosion rate. Chloride balance runs were made for isolation of corrosive streams with high chlorine content. A caustic wash program of inlet streams has been developed for selective treatment of corrosive streams as an alternative means for possible replacement of sodium carbonate addition. High chlorine content coals such as Kentucky number 9 Lafayette and Dotiki (0.2 to 0.3%) were very corrosive, compared to low chlorine content coal, Kentucky number 9 Fies (< 0.1%). Sodium carbonate addition (0.6 to 0.7% of coal) reduced corrosion rate from 500 MPY to an insignificant level of less than 5 MPY. Caustic wash of solvents could reduce corrosion rate by 50%, removing most corrosive compounds present in the 440 to 480/sup 0/F boiling fraction. Extensive studies for the hot separator mode of operation have been done as a means of saving substantial energy by elimination of dissolver slurry cooling (0.3 MM Btu/hr) and reheating for solvent recovery (1 MM Btu/h). Impacts of the hot separator mode on plant operability, product quality …
Date:
April 1, 1981
Creator:
Lee, J.M.
Object Type:
Report
System:
The UNT Digital Library
Wind loads on flat plate photovoltaic array fields. Phase III, final report
The results of an experimental analysis (boundary layer wind tunnel test) of the aerodynamic forces resulting from winds acting on flat plate photovoltaic arrays are presented. Local pressure coefficient distributions and normal force coefficients on the arrays are shown and compared to theoretical results. Parameters that were varied when determining the aerodynamic forces included tilt angle, array separation, ground clearance, protective wind barriers, and the effect of the wind velocity profile. Recommended design wind forces and pressures are presented, which envelop the test results for winds perpendicular to the array's longitudinal axis. This wind direction produces the maximum wind loads on the arrays except at the array edge where oblique winds produce larger edge pressure loads.
Date:
April 1, 1981
Creator:
Miller, R.D. & Zimmerman, D.K.
Object Type:
Report
System:
The UNT Digital Library
The Windmill, Volume 7, Number 8, April 1981
Newsletter of the University of Texas of the Permian Basin describing research, news, events, and activities at the university, as well as other topics of interest.
Date:
April 1981
Creator:
University of Texas of the Permian Basin
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Womansight: News for North Texas Women, Volume 1, Number 11, April 1981
Monthly newspaper published by Womansight, Inc. providing news of interest to women in North Texas including information about upcoming events, women's groups and organizations, resources, and various current topics, with advertising. 6 pages of "Womansight: News for North Texas Women" newspaper, Vol. 1, No. 11, April 1981.
Date:
April 1981
Creator:
Womansight, Incorporated
Object Type:
Newspaper
System:
The UNT Digital Library