Resource Type
Partner
Rice University Woodson Research Center
139
McMurry University Library
91
Oklahoma Historical Society
80
Hardin-Simmons University Library
59
UNT Libraries
52
Howard Payne University Library
49
UNT Libraries Government Documents Department
48
Southwestern University
26
Abilene Public Library
16
Sterling Municipal Library
12
50 More
Collection
Texas Digital Newspaper Program
584
Abilene Library Consortium
232
The Rice Thresher
139
The War Whoop
89
Oklahoma Digital Newspaper Program
80
The Brand (Abilene, TX)
59
Tocker Foundation Grant
51
The Yellow Jacket
44
Office of Scientific & Technical Information Technical Reports
38
The Megaphone
26
116 More
Country
States
Decade
Month
Language
714 Matching Results
Results open in a new window/tab. Unexpected Results? Search the Catalog Instead.
Results:
1 - 24 of
714
next
Pollution of ground water due to inactive uranium mill tailings. Summary of progress, October 1, 1979-September 30, 1981
An extensive program of characterization of several inactive uranium tailings piles has been carried out in the past year. The geotechnical engineering program conducted a drilling program at the Salt Lake City and Grand Junction sites. The locations of slimes and sands in these sites hve been characterized. In general, it was found that slimes exist in the impoundments in lower percentages than normally produced from mill tailings. Permeability tests were conducted yielding values ranging from 10/sup -3/ cm/sec to 10/sup -6/cm/sec. The geochemical studies made considerable progress in the past year. Extensive sampling of several sites was conducted. Sampling programs have been completed for seven sites and are underway for nine other sites. The work to date has indicated the importance of salts in controlling the direction and rate of movement of contaminants. The work has also indicated that a number of non-radioactive elements such as As are of environmental importance. The work also indicates the importance of the fact that the tailings piles are out of chemical equilibrium with their environment. Computer software was developed and implemented for data storage and retrieval. Automation hardware was installed and tested for the Inductively Coupled Plasma Emission Spectrometer. A number of …
Date:
1980-10~
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Optimization of Comminution Circuit Throughput and Product Size Distribution by Simulation and Control
The goal of this project is to improve energy efficiency of industrial crushing and grinding operations (comminution). Mathematical models of the comminution process are being used to study methods for optimizing the product size distribution, so that the amount of excessively fine material produced can be minimized. The goal is to save energy by reducing the amount of material that is ground below the target size, while simultaneously reducing the quantity of materials wasted as ''slimes'' that are too fine to be useful. This will be accomplished by: (1) modeling alternative circuit arrangements to determine methods for minimizing overgrinding and maximizing energy efficiency, and (2) determining whether new technologies, such as high-pressure roll crushing, can be used to alter particle breakage behavior to minimize fines production.
Date:
October 1, 2003
Creator:
Walqui, H. J.; Eisele, T. C. & Kawatra, S. K.
Object Type:
Report
System:
The UNT Digital Library
Progress Report on Carnotite Studies; Carbonate Processes: September 1949
This is a progress report on the carbonate process, compiled by the chemical development department of the Carbide and Carbon Chemicals Corporation's Y-12 plant, covering the month of September, 1949. In the previous month, the problem of immediate interest to the Monticello operation were listed. Projects that were left incomplete during that time were continued during this month, as well as a brief investigation of the process in which raw ore is leached with sodium carbonate, the sands and slime separated, the sands leached with acid, and the slimes roasted in a pellitized form.
Date:
October 6, 1949
Creator:
Brown, K. B. & Coleman, C. F.
Object Type:
Report
System:
The UNT Digital Library
Optimization of Comminution Circuit Throughput and Product Size Distribution by Simulation and Control
The goal of this project is to improve energy efficiency of industrial crushing and grinding operations (comminution). Mathematical models of the comminution process are being used to study methods for optimizing the product size distribution, so that the amount of excessively fine material produced can be minimized. The goal is to save energy by reducing the amount of material that is ground below the target size, while simultaneously reducing the quantity of materials wasted as ''slimes'' that are too fine to be useful. This is being accomplished by mathematical modeling of the grinding circuits to determine how to correct this problem. The approaches taken included (1) Modeling of the circuit to determine process bottlenecks that restrict flowrates in one area while forcing other parts of the circuit to overgrind the material; (2) Modeling of hydrocyclones to determine the mechanisms responsible for retaining fine, high-density particles in the circuit until they are overground, and improving existing models to accurately account for this behavior; and (3) Evaluation of advanced technologies to improve comminution efficiency and produce sharper product size distributions with less overgrinding.
Date:
October 1, 2004
Creator:
Eisele, T. C.; Kawatra, S. K. & Walqui, H. J.
Object Type:
Report
System:
The UNT Digital Library
Optimization of Comminution Circuit Throughput and Product Size Distribution by Simulation and Control
The goal of this project is to improve energy efficiency of industrial crushing and grinding operations (comminution). Mathematical models of the comminution process are being used to study methods for optimizing he product size distribution, so that the amount of excessively fine material produced can be minimized. This will save energy by reducing the amount of material that is ground below the target size, and will also reduce the quantity of materials wasted as ''slimes'' that are too fine to be useful. This will be accomplished by: (1) modeling alternative circuit arrangements to determine methods for minimizing overgrinding, and (2) determining whether new technologies, such as high-pressure roll crushing, can be used to alter particle breakage behavior to minimize fines production. In the seventh quarter of this project, analysis of the plant operation identified sources of overgrinding in the circuit. Overgrinding was primarily caused by two effects: (1) The hydrocyclones used to close the circuit and remove fully-ground particles from the circuit were preferentially returning high-density ore particles to the secondary mills for regrinding even after they were already ground to pass the desired product size, and (2) The primary grinding mills were operating at less than full capacity, suggesting …
Date:
October 1, 2002
Creator:
Kawatra, S. K.; Eisele, T. C. & Walqui, H. J.
Object Type:
Report
System:
The UNT Digital Library
The War Whoop (Abilene, Tex.), Vol. 34, No. 6, Ed. 1, Friday, October 19, 1956
Weekly student newspaper from McMurry College in Abilene, Texas that includes local, state and campus news along with advertising.
Date:
October 19, 1956
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Gross alpha activity as an estimator of radium-226 activity in soils and tailings at an inactive uranium mill tailings site
Gross alpha activity in surface tailings and surface soils from one inactive uranium mill site has been shown to be an accurate estimator of /sup 226/Ra activity. An exponential regression, /sup 226/Ra = 387(e/sup 0.00166..cap alpha../ - 1), where /sup 226/Ra activity is in picoCuries per gram and gross alpha activity is in counts per minute per sample, gave a good fit for samples ranging in gross alpha activity from 3 to 1082 cpm/sample. A linear regression, /sup 226/Ra = 1.05 ..cap alpha.. + 1.78, has been calculated, which shows gross alpha activity to be an excellent estimator of /sup 226/Ra activity in soils contaminated with tailings. The percentage of gross alpha activity attributable to /sup 226/Ra activity has been calculated to be 7.2, 17.6, 18.3, and 17.0 for uncontaminated soils, contaminated soils, tailings, and the total set of samples, respectively.
Date:
October 1, 1978
Creator:
Dreesen, D.R. & Wienke, C.L.
Object Type:
Report
System:
The UNT Digital Library
The Thresher (Houston, Tex.), Vol. 10, No. 3, Ed. 1 Friday, October 3, 1924
A weekly student newspaper from the Rice Institute in Houston, Texas that includes campus news and commentaries along with advertising.
Date:
October 3, 1924
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Thresher (Houston, Tex.), Vol. 12, No. 2, Ed. 1 Friday, October 1, 1926
A weekly student newspaper from the Rice Institute in Houston, Texas that includes campus news and commentaries along with advertising.
Date:
October 1, 1926
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The War Whoop (Abilene, Tex.), Vol. 34, No. 5, Ed. 1, Friday, October 12, 1956
Weekly student newspaper from McMurry College in Abilene, Texas that includes local, state and campus news along with advertising.
Date:
October 12, 1956
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Yellow Jacket (Brownwood, Tex.), Vol. 20, No. 4, Ed. 1, Thursday, October 5, 1933
Weekly student newspaper from Howard Payne College in Brownwood, Texas that includes local, state and campus news along with advertising.
Date:
October 5, 1933
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Thresher (Houston, Tex.), Vol. 10, No. 5, Ed. 1 Friday, October 17, 1924
A weekly student newspaper from the Rice Institute in Houston, Texas that includes campus news and commentaries along with advertising.
Date:
October 17, 1924
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Thresher (Houston, Tex.), Vol. 10, No. 6, Ed. 1 Friday, October 24, 1924
A weekly student newspaper from the Rice Institute in Houston, Texas that includes campus news and commentaries along with advertising.
Date:
October 24, 1924
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The War Whoop (Abilene, Tex.), Vol. 43, No. 5, Ed. 1, Thursday, October 7, 1965
Weekly student newspaper from McMurry College in Abilene, Texas that includes local, state and campus news along with advertising.
Date:
October 7, 1965
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Thresher (Houston, Tex.), Vol. 32, No. 13, Ed. 1 Thursday, October 11, 1945
A weekly student newspaper from the Rice Institute in Houston, Texas that includes campus news and commentaries along with advertising.
Date:
October 11, 1945
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Thresher (Houston, Tex.), Vol. 35, No. 1, Ed. 1 Thursday, October 2, 1947
A weekly student newspaper from the Rice Institute in Houston, Texas that includes campus news and commentaries along with advertising.
Date:
October 2, 1947
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The War Whoop (Abilene, Tex.), Vol. 33, No. 7, Ed. 1, Friday, October 28, 1955
Weekly student newspaper from McMurry College in Abilene, Texas that includes local, state and campus news along with advertising.
Date:
October 28, 1955
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Progress Report on the Flotation of Uranium Bearing Minerals From Lake Athabaska Ore, Sample 43-1
At the request of the Atomic Energy Commission, a 456 pound sample of Lake Athabaska ore was shipped to this laboratory by the Radioactivity Division of the Canadian Bureau of Mines. The sample was received on March 10, 1952 and given our number 43-1. Several series of flotation tests were performed on the sample.
Date:
October 12, 1953
Creator:
Breymann, John B.; Charles, W. D. & Thomas, P. N.
Object Type:
Report
System:
The UNT Digital Library
The Thresher (Houston, Tex.), Vol. 34, No. 4, Ed. 1 Thursday, October 24, 1946
A weekly student newspaper from the Rice Institute in Houston, Texas that includes campus news and commentaries along with advertising.
Date:
October 24, 1946
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Thresher (Houston, Tex.), Vol. 15, No. 3, Ed. 1 Friday, October 4, 1929
A weekly student newspaper from the Rice Institute in Houston, Texas that includes campus news and commentaries along with advertising.
Date:
October 4, 1929
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Thresher (Houston, Tex.), Vol. 11, No. 6, Ed. 1 Friday, October 23, 1925
A weekly student newspaper from the Rice Institute in Houston, Texas that includes campus news and commentaries along with advertising.
Date:
October 23, 1925
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The War Whoop (Abilene, Tex.), Vol. 34, No. 7, Ed. 1, Friday, October 26, 1956
Weekly student newspaper from McMurry College in Abilene, Texas that includes local, state and campus news along with advertising.
Date:
October 26, 1956
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Thresher (Houston, Tex.), Vol. 11, No. 3, Ed. 1 Friday, October 2, 1925
A weekly student newspaper from the Rice Institute in Houston, Texas that includes campus news and commentaries along with advertising.
Date:
October 2, 1925
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Thresher (Houston, Tex.), Vol. 28, No. 6, Ed. 1 Friday, October 16, 1942
A weekly student newspaper from the Rice Institute in Houston, Texas that includes campus news and commentaries along with advertising.
Date:
October 16, 1942
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History