Partner
Oklahoma Historical Society
725
Dublin Public Library
149
Brownwood Public Library
103
Sterling Municipal Library
69
West Public Library
47
Llano County Public Library
41
Virgil and Josephine Gordon Memorial Library
41
Red River County Public Library
40
Alvin Community College
26
UNT Libraries Government Documents Department
25
63 More
Collection
Texas Digital Newspaper Program
825
Oklahoma Digital Newspaper Program
734
Tocker Foundation Grant
545
The Oklahoma City Times
203
Lawton Constitution
136
City of Stephenville Newspaper Collection
118
Stephenville Empire-Tribune
118
Brownwood Bulletin
103
Chickasha Newspaper Collection
95
The Baytown Sun
69
96 More
Country
Year
Month
Language
1,597 Matching Results
Results open in a new window/tab. Unexpected Results? Search the Catalog Instead.
Results:
1 - 24 of
1,597
next
Investigations into the effects of an arc discharge on a high velocity liquid jet
High velocity liquid jets have been shown to be effective in removing rock in drilling and mining. The high pressures needed to accelerate the fluid to the required velocities are difficult to sustain at reasonable costs. The effect of an arc discharge on the stream of liquid is investigated to determine the value of the spark as an enhancement device. The primary effects investigated are the enhancement of the initial shock wave by the stream velocity, the water hammer from the inerrupted stream, the possibility of disruption of the arc by the jet, and the jetting into a collapsing cavitation bubble. All of the experiments are conducted at atmospheric conditions with an analysis of the effects of hydrostatic pressure on the system. The experimental apparatus is a 25 kV capacitive discharge system to develop the arc in a liquid with a jet passing between the electrodes. Pressures up to 20 MP/sub a/ (3 kpsi) that give velocities of 200 m/s (650 fps) are used in the experiments. The primary diagnostic techniques are piezoelectric pressure transducers, framing and streak cameras, and rock specimen damage observations. A definite enhancement in the rock removing capabilities is observed. Steady jets that will not erode …
Date:
August 1, 1977
Creator:
Huff, C. F. & McFall, A. L.
Object Type:
Report
System:
The UNT Digital Library
Appraisal study of the geothermal resources of Arizona and adjacent areas in New Mexico and Utah and their value for desalination and other uses
An appraisal investigation of the geothermal resources of a portion of the Lower Colorado River Region of the U.S. Bureau of Reclamation is reported. The study area includes most of Arizona, part of western New Mexico west of the continental divide, and a small part of southwestern Utah. Almost 300 water samples have been collected from the study area and chemically analyzed. These samples include hot wells and springs in addition to nearby nonthermal waters to help establish background chemistry. Further, almost 10,000 chemical analyses of groundwaters were obtained from the U.S. Geological Survey's water quality file. Routine geothermal interpretative techniques were then applied to these chemical data to identify geothermal anomalies which might indicate the presence of exploitable geothermal resources. These geochemical anomalies were then evaluated in terms of available geophysical data such as heat flow, gravity, magnetics, basement linears, earthquake epicentral locations, depth of sedimentary basins, quaternary volcanics, recent fault scarps, etc. to further delineate the size and shape of the prospective geothermal sites and help establish their production potential.
Date:
July 1, 1977
Creator:
Callender, Jonathan F.; Swanberg, Chandler A.; Morgan, Paul; Stoyer, Charles H. & Witcher, James C.
Object Type:
Report
System:
The UNT Digital Library
Environmental control implications of generating electric power from coal. 1977 technology status report. Appendix A, Part 1. Coal preparation and cleaning assessment study
This report evaluates the state of the art and effectiveness of physical coal cleaning as a potential strategy for controlling SO/sub x/ emissions in coal fired power generation. Coal properties which are significantly altered by physical coal cleaning were determined. The effects of the changes in properties as they relate to pulverized coal firing, fluidized bed combustion and low Btu gasification for combined cycle powered generation were studied. Available coal washability data were integrated by computer with U.S. coal reserve data. Approximately 18% of the demonstrated coal reserve were matched with washability data. Integrated data appear in the Appendix. Current coal preparation practices were reviewed. Future trends were determined. Five process flow sheets representing increasing levels of cleaning sophistication were prepared. The clean product from each flow sheet will meet U.S. EPA New Source Performance Standards. Capital and operating costs for each case were estimated. Environmental control technology and environmental impact associated with current coal preparation and cleaning operations were assessed. Physical coal cleaning is widely practiced today. Where applicable it represents the least expensive method of coal sulfur reduction. Developmental physical and chemical coal cleaning processes were studied. The chemical methods have the advantage of being able to remove …
Date:
December 1, 1977
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
The Chickasha Daily Express (Chickasha, Okla.), Vol. 85, No. 26, Ed. 1 Tuesday, April 12, 1977
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 12, 1977
Creator:
Drew, Charles C.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Chickasha Daily Express (Chickasha, Okla.), Vol. 85, No. 2, Ed. 1 Tuesday, March 15, 1977
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 15, 1977
Creator:
Drew, Charles C.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Sunday Oklahoma Eagle (Tulsa, Okla.), Vol. 2, No. 20, Ed. 1 Sunday, November 6, 1977
Semiweekly newspaper from Tulsa, Oklahoma that includes local, state, and national news along with advertising.
Date:
November 6, 1977
Creator:
Jeffrey, Charles, Jr.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Oklahoma City Times (Oklahoma City, Okla.), Vol. 87, No. 278, Ed. 2 Monday, January 10, 1977
Daily newspaper from Oklahoma City, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 10, 1977
Creator:
Bennett, Charles L.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Chickasha Daily Express (Chickasha, Okla.), Vol. 84, No. 295, Ed. 1 Monday, February 21, 1977
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 21, 1977
Creator:
Drew, Charles C.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Chickasha Daily Express (Chickasha, Okla.), Vol. 85, No. 224, Ed. 1 Monday, November 28, 1977
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
November 28, 1977
Creator:
Drew, Charles C.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Chickasha Daily Express (Chickasha, Okla.), Vol. 85, No. 215, Ed. 1 Thursday, November 17, 1977
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
November 17, 1977
Creator:
Drew, Charles C.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Oklahoma City Times (Oklahoma City, Okla.), Vol. 87, No. 302, Ed. 2 Monday, February 7, 1977
Daily newspaper from Oklahoma City, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 7, 1977
Creator:
Bennett, Charles L.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Chickasha Daily Express (Chickasha, Okla.), Vol. 85, No. 213, Ed. 1 Tuesday, November 15, 1977
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
November 15, 1977
Creator:
Drew, Charles C.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Chickasha Daily Express (Chickasha, Okla.), Vol. 85, No. 144, Ed. 1 Wednesday, August 24, 1977
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
August 24, 1977
Creator:
Drew, Charles C.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Chickasha Daily Express (Chickasha, Okla.), Vol. 85, No. 14, Ed. 1 Tuesday, March 29, 1977
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
March 29, 1977
Creator:
Drew, Charles C.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Chickasha Daily Express (Chickasha, Okla.), Vol. 85, No. 220, Ed. 1 Wednesday, November 23, 1977
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
November 23, 1977
Creator:
Drew, Charles C.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Chickasha Daily Express (Chickasha, Okla.), Vol. 85, No. 137, Ed. 1 Tuesday, August 16, 1977
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
August 16, 1977
Creator:
Drew, Charles C.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Chickasha Daily Express (Chickasha, Okla.), Vol. 85, No. 155, Ed. 1 Tuesday, September 6, 1977
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 6, 1977
Creator:
Drew, Charles C.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Chickasha Daily Express (Chickasha, Okla.), Vol. 84, No. 290, Ed. 1 Tuesday, February 15, 1977
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 15, 1977
Creator:
Drew, Charles C.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Chickasha Daily Express (Chickasha, Okla.), Vol. 84, No. 267, Ed. 1 Wednesday, January 19, 1977
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
January 19, 1977
Creator:
Drew, Charles C.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Chickasha Daily Express (Chickasha, Okla.), Vol. 84, No. 297, Ed. 1 Wednesday, February 23, 1977
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 23, 1977
Creator:
Drew, Charles C.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Oklahoma City Times (Oklahoma City, Okla.), Vol. 88, No. 90, Ed. 2 Monday, June 6, 1977
Daily newspaper from Oklahoma City, Oklahoma that includes local, state, and national news along with advertising.
Date:
June 6, 1977
Creator:
Bennett, Charles L.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Chickasha Daily Express (Chickasha, Okla.), Vol. 85, No. 166, Ed. 1 Tuesday, September 20, 1977
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
September 20, 1977
Creator:
Drew, Charles C.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Chickasha Daily Express (Chickasha, Okla.), Vol. 85, No. 25, Ed. 1 Monday, April 11, 1977
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
April 11, 1977
Creator:
Drew, Charles C.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Chickasha Daily Express (Chickasha, Okla.), Vol. 84, No. 283, Ed. 1 Monday, February 7, 1977
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
February 7, 1977
Creator:
Drew, Charles C.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History