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Recent US target-physics-related research in heavy-ion inertial fusion: simulations for tamped targets and for disk experiments in accelerator test facilities
Within the last few years, there have also appeared in the Heavy-Ion Fusion literature several studies of targets which have outer tampers. One-dimensional simulations indicate higher target gains with a judicious amount of tamping. But for these targets, a full investigation has not been carried through in regards to conservative criteria for fluid instabilities as well as reasonable imperfections in target fabrication and illumination symmetry which all affect target ignition and burn. Comparisons of these results with the gain survey of Part I would have to be performed with care. These calculations suggest that experiments relating to high temperature disk heating, as well as beam deposition, focusing and transport can be performed within the context of current design proposals for accelerator test-facilities. Since the test-facilities have lower ion kinetic energy and beam pulse power as compared to reactor drivers, we achieve high-beam intensities at the focal spot by using short focal distance and properly designed beam optics.
Date:
June 24, 1982
Creator:
Mark, J.W.K.
Object Type:
Article
System:
The UNT Digital Library
Control of pyrite surface chemistry in physical coal cleaning
The successful separation of pyrite from coal by flotation is dependent to a large extent upon the selectivity of the process, and the use of a pyrite depressant is one of the most important and cost-effective techniques for achieving this. This report evaluates the effects of three factors on the floatability of pyrite. These are (1) the superficial oxidation of pyrite, (2) the contamination of pyrite surfaces by carbonaceous matter, and (3) pulp redox potentials. XPS (x-ray photoelectron spectroscopy) and IR spectrometry have been used to identify surface reaction products. Microflotation, laboratory-scale conventional flotation and microbubble column flotation were used to quantify the effects of these factors. It was found that low (reducing) pulp potentials are effective depressants of pyrite (more so for fresh, unoxidized samples than for oxidized samples), whilst at the same time do not materially affect coal flotation.
Date:
June 24, 1992
Creator:
Luttrell, G. H.; Yoon, R. H. & Ou, Z. S.
Object Type:
Report
System:
The UNT Digital Library
Control of pyrite surface chemistry in physical coal cleaning
To better understand the surface chemical properties of coal and mineral pyrite, studies on the effect of flotation surfactants (frother and kerosene) on the degree of hydrophobicity have been conducted. The presence of either frother or kerosene enhanced the flotability of coal and mineral pyrite with a corresponding decrease in induction time over the pH range examined. Scanning electron microscopy (SEM) results indicate a correlation exists between the sample surface morphology and crystal structure and the observed hydrophobicity. As a result of the data obtained from the surface characterization studies, controlled surface oxidation was investigated as a possible pyrite rejection scheme in microbubble column flotation.
Date:
June 24, 1992
Creator:
Luttrell, G. H.; Yoon, R. H.; Zachwieja, J. & Lagno, M.
Object Type:
Report
System:
The UNT Digital Library
[News Clip: Worden hearing]
Video footage from the WBAP-TV station in Fort Worth, Texas to accompany a story about Coy Donald Worden, accused of the May murder of Louis Eugene Irby, appearing before Judge Matthews in Fort Worth to seek court-appointed legal counsel.
Date:
June 24, 1964
Creator:
WBAP-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Community event]
Video footage from the WBAP-TV television station in Fort Worth, Texas, covering a news story.
Date:
June 24, 1964
Creator:
WBAP-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Parade]
Video footage from the WBAP-TV station in Fort Worth, Texas to accompany a story about a parade for the Jaycees annual convention in Dallas.
Date:
June 24, 1964
Creator:
WBAP-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Hearing]
Video footage from the WBAP-TV television station in Fort Worth, Texas, covering a news story about ongoing civil rights demonstrations at the Piccadilly Cafeteria in Dallas, Texas. A hearing regarding the status of a temporary restraining order against the demonstrators is interrupted by a parade for the Jaycees annual convention which includes a Confederate flag that stretches from one side of the street to the other.
Date:
June 24, 1964
Creator:
WBAP-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Moon eclipse]
Video footage from the WBAP-TV station in Fort Worth, Texas to accompany a story about a lunar eclipse.
Date:
June 24, 1964
Creator:
WBAP-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Benbrook drowning]
Video footage from the WBAP-TV station in Fort Worth, Texas to accompany a story about the recovery of the body of James Louis Freeman who drowned in Benbrook Lake.
Date:
June 24, 1964
Creator:
WBAP-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
[News Clip: Hawn freeway]
Video footage from the WBAP-TV station in Fort Worth, Texas to accompany a story about a ceremony for the grand opening of the Hawn Freeway in Seagoville, Texas.
Date:
June 24, 1964
Creator:
WBAP-TV (Television station : Fort Worth, Tex.)
Object Type:
Video
System:
The UNT Digital Library
Master oscillator stability requirements considerations
This note attempts to point out some ideas about the required stability of the 476 MHz master oscillator, assuming that the phase noise of the oscillator is the only source of noise in the accelerator system.
Date:
June 24, 1986
Creator:
Schwarz, H. & Vancraeynest, J.
Object Type:
Report
System:
The UNT Digital Library
Early history of computer simulations in statistical mechanics
A history of the early use of the Monte Carlo method is presented.
Date:
June 24, 1985
Creator:
Wood, W.W.
Object Type:
Article
System:
The UNT Digital Library
Control of pyrite surface chemistry in physical coal cleaning
One of the most difficult separations in minerals processing involves the differential flotation of pyrite and coal. Under practical flotation conditions, they are both hydrophobic and no cost-effective method has been developed to efficiently reject the pyrite. The problem arises from inherent floatability of coal and pyrite. Coal is naturally hydrophobic and remains so under practical flotation. Although pyrite is believed to be naturally hydrophilic under practical flotation conditions it undergoes a relatively rapid incipient oxidation reaction that causes self-induced'' flotation. The oxidation product responsible for self-induced'' flotation is believed to be a metal polysulfide, excess sulfur in the lattice, or in some cases elemental sulfur. It is believed that if incipient oxidation of pyrite could be prevented, good pyrite rejection could be obtained. In order to gain a better understanding of how pyrite oxidizes, a new method of preparing fresh, unoxidized pyrite surfaces and a new method of studying pyrite oxidation have been developed this reporting period.
Date:
June 24, 1992
Creator:
Yoon, R. H. & Richardson, P. R.
Object Type:
Report
System:
The UNT Digital Library
Guthrie Daily News. (Guthrie, Okla. Terr.), Vol. 5, No. 1519, Ed. 1 Sunday, June 24, 1894
Daily newspaper from Guthrie, Oklahoma Territory that includes local, territorial, and national news along with advertising.
Date:
June 24, 1894
Creator:
Leach, L. F., Jr. & Smith, W. Heath
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Oklahoma Democrat. (Altus, Okla.), Vol. 3, No. 13, Ed. 1 Thursday, June 24, 1909
Weekly newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
June 24, 1909
Creator:
Ruthruff, C. E.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Oklahoma Democrat (Altus, Okla.), Vol. 8, No. 16, Ed. 1 Thursday, June 24, 1915
Weekly newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
June 24, 1915
Creator:
Powell, Eugene
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Greer County Democrat (Mangum, Okla.), Vol. 25, No. 41, Ed. 1 Thursday, June 24, 1915
Weekly newspaper from Mangum, Oklahoma that includes local, state, and national news along with advertising.
Date:
June 24, 1915
Creator:
Watt, W. O.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Weekly News. (Altus, Okla.), Vol. 21, No. 18, Ed. 1 Thursday, June 24, 1920
Weekly newspaper from Altus, Oklahoma that includes local, county, state, and national news along with advertising.
Date:
June 24, 1920
Creator:
Orr, J. P.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Indianola Press. (Indianola, Indian Terr.), Vol. 1, No. 47, Ed. 1 Friday, June 24, 1904
Weekly newspaper from Indianola, Indian Territory that includes local, territorial, and national news along with advertising.
Date:
June 24, 1904
Creator:
Johnson, L. C.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Hooker Advance (Hooker, Okla.), Vol. 7, No. 20, Ed. 1 Friday, June 24, 1910
Weekly newspaper from Hooker, Oklahoma that includes local, state, and national news along with advertising.
Date:
June 24, 1910
Creator:
unknown
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Altus Weekly News. (Altus, Okla.), Vol. 16, No. 17, Ed. 1 Thursday, June 24, 1915
Weekly newspaper from Altus, Oklahoma that includes local, county, state, and national news along with advertising.
Date:
June 24, 1915
Creator:
Orr, J. P.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Cushing Independent. (Cushing, Okla.), Vol. 8, No. 31, Ed. 1 Thursday, June 24, 1909
Weekly newspaper from Cushing, Oklahoma that includes local, state, and national news along with advertising.
Date:
June 24, 1909
Creator:
Holland, Al. H.
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
[Nuntius Float in the First Gay Pride Parade in Dallas, Texas]
A photograph of a float during the first Gay Pride Parade in the street. Written on the side of a poster attached to the float are the words, "Nuntuis- Our Community Texas Gay Newspaper." Handwritten on the back of the photograph are the words, "1st Gay Pride Parade. June 24 1972."
Date:
June 24, 1972
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[C.O.F. Float in First Gay Pride Parade in Dallas, Texas]
Photograph of a float during the first Gay Pride Parade, parked in the street. Written on the side of a poster attached to the float are the words, "C.O.F. Texas Oldest Homophile Organization. Gay as an American Flag and Apple Pie." Buildings are visible in the background. Handwritten on the back of the photograph are the words, "1st Gay Pride Parade. June 24 1972."
Date:
June 24, 1972
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library