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7,739 Matching Results

Start Over Month May Day 4th

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Effects of catalytic mineral matter on CO/CO sub 2 , temperature and burning time for char combustion (open access)

Effects of catalytic mineral matter on CO/CO sub 2 , temperature and burning time for char combustion

The temperature of a char particle burning in an oxygen containing atmosphere is the product of a strongly coupled balance between particle size and physical properties, heat transfer from the particle, surface reactivity, CO/CO{sub 2} ratio and gas phase diffusion in the surrounding boundary layer and within the particle. CO{sub 2}/CO ratios can be strongly influenced by catalytic material in the carbon and by the char temperature. In this program we are measuring the CO{sub 2}/CO ratio for both catalyzed and uncatalyzed chars over a wide range of temperature. These results will then be used to develop predictive models for char temperature and burning rates. The electrodynamic balance has been successfully used to make such measurements for single 200{mu}m spherocarb particles. A few theoretical approaches to model a single particle oxidation have been made, but most of them assumed the infinitely thin reaction zone at the particle surface. This approach can not explain pore diffusion limitation, structural change, or reaction at low temperatures inside the particle. Too simplifying solid phase reaction may leads to wrong predictions. In this report, progress on constructing models including both solid and gas phase reaction are reported.
Date: May 4, 1992
Creator: Longwell, J. P.; Sarofim, A. F.; Lee, Chun-Hyuk & Modestino, A. J.
Object Type: Report
System: The UNT Digital Library
NQR-NMR studies of higher alcohol synthesis Cu-Co catalysts (open access)

NQR-NMR studies of higher alcohol synthesis Cu-Co catalysts

During this period, we focused our attention in analyzing the magnetic nature of the extensively used trimetallic catalyst system Cu-Co-Cr for the production of higher alcohols. We believe that there could be some correspondence between the catalytic and magnetic behaviors of the transition metal catalyst systems. Both the morphology and metallic charge distribution of the particles are known to govern the catalytic as well as the magnetic properties of the system.
Date: May 4, 1992
Creator: Murty, A.N.
Object Type: Report
System: The UNT Digital Library
[News Clip: Pollution] captions transcript

[News Clip: Pollution]

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.
Date: May 4, 1994
Creator: KXAS-TV (Television station : Fort Worth, Tex.)
Object Type: Video
System: The UNT Digital Library
Intelligent optical design program (open access)

Intelligent optical design program

Described is a general approach to the development of computer programs capable of designing image-forming optical systems without human intervention and of improving their performance with repeated attempts. The approach utilizes two ideas: (1) interpretation of technical design as a mapping in the configuration space of technical characteristics and (2) development of an intelligent routine that recognizes global optima. Examples of lens systems designed and used in the development of the general approach are presented, current status of the project is summarized, and plans for the future efforts are indicated.
Date: May 4, 1984
Creator: Bohachevsky, I.O.; Viswanathan, V.K. & Woodfin, G.
Object Type: Article
System: The UNT Digital Library
The Mangum Mirror (Mangum, Okla.), Vol. 1, No. 14, Ed. 1 Friday, May 4, 1917 (open access)

The Mangum Mirror (Mangum, Okla.), Vol. 1, No. 14, Ed. 1 Friday, May 4, 1917

Semi-weekly newspaper from Mangum, Oklahoma that includes local, state, and national news along with advertising.
Date: May 4, 1917
Creator: Ryder, J. W.
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Oklahoma Democrat (Altus, Okla.), Vol. 9, No. 8, Ed. 1 Thursday, May 4, 1916 (open access)

The Oklahoma Democrat (Altus, Okla.), Vol. 9, No. 8, Ed. 1 Thursday, May 4, 1916

Weekly newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: May 4, 1916
Creator: unknown
Object Type: Newspaper
System: The Gateway to Oklahoma History
Oklahoma State Register. (Guthrie, Okla.), Vol. 14, No. 18, Ed. 1 Thursday, May 4, 1905 (open access)

Oklahoma State Register. (Guthrie, Okla.), Vol. 14, No. 18, Ed. 1 Thursday, May 4, 1905

Weekly newspaper from Guthrie, Oklahoma Territory that includes local, territorial, and national news along with advertising.
Date: May 4, 1905
Creator: Golobie, John
Object Type: Newspaper
System: The Gateway to Oklahoma History
Taloga Times-Advocate (Taloga, Okla.), Vol. 28, No. 47, Ed. 1 Thursday, May 4, 1922 (open access)

Taloga Times-Advocate (Taloga, Okla.), Vol. 28, No. 47, Ed. 1 Thursday, May 4, 1922

Weekly newspaper from Taloga, Oklahoma that includes local, state, and national news along with advertising.
Date: May 4, 1922
Creator: unknown
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Greer County Democrat (Mangum, Okla.), Vol. 26, No. 34, Ed. 1 Thursday, May 4, 1916 (open access)

The Greer County Democrat (Mangum, Okla.), Vol. 26, No. 34, Ed. 1 Thursday, May 4, 1916

Weekly newspaper from Mangum, Oklahoma that includes local, state, and national news along with advertising.
Date: May 4, 1916
Creator: Watt, W. O.
Object Type: Newspaper
System: The Gateway to Oklahoma History
Guthrie Daily News. (Guthrie, Okla. Terr.), Vol. 5, No. 1475, Ed. 1 Friday, May 4, 1894 (open access)

Guthrie Daily News. (Guthrie, Okla. Terr.), Vol. 5, No. 1475, Ed. 1 Friday, May 4, 1894

Daily newspaper from Guthrie, Oklahoma Territory that includes local, territorial, and national news along with advertising.
Date: May 4, 1894
Creator: Smith, Winfield Scott
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Mangum Star. (Mangum, Okla. Terr.), Vol. 17, No. 44, Ed. 1 Thursday, May 4, 1905 (open access)

The Mangum Star. (Mangum, Okla. Terr.), Vol. 17, No. 44, Ed. 1 Thursday, May 4, 1905

Weekly newspaper from Mangum, Oklahoma that includes local, territorial, and national news along with advertising.
Date: May 4, 1905
Creator: Echols, R. C.
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Oklahoma Democrat. (Altus, Okla.), Vol. 5, No. 7, Ed. 1 Thursday, May 4, 1911 (open access)

The Oklahoma Democrat. (Altus, Okla.), Vol. 5, No. 7, Ed. 1 Thursday, May 4, 1911

Weekly newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date: May 4, 1911
Creator: Williams, R. T.
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Guthrie Daily Star (Guthrie, Okla.), Vol. 9, No. 47, Ed. 1 Saturday, May 4, 1912 (open access)

The Guthrie Daily Star (Guthrie, Okla.), Vol. 9, No. 47, Ed. 1 Saturday, May 4, 1912

Daily newspaper from Guthrie, Oklahoma that includes local, state, and national news along with advertising.
Date: May 4, 1912
Creator: Hornaday, W. H.
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Tyrone Observer. (Tyrone, Okla.), Vol. 18, No. 48, Ed. 1 Thursday, May 4, 1922 (open access)

The Tyrone Observer. (Tyrone, Okla.), Vol. 18, No. 48, Ed. 1 Thursday, May 4, 1922

Weekly newspaper from Tyrone, Oklahoma that includes local, state, and national news along with advertising.
Date: May 4, 1922
Creator: Mast, C. W.
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Willow Times (Willow, Okla.), Vol. 2, No. 1, Ed. 1 Friday, May 4, 1917 (open access)

The Willow Times (Willow, Okla.), Vol. 2, No. 1, Ed. 1 Friday, May 4, 1917

Weekly newspaper from Willow, Oklahoma that includes local, state, and national news along with advertising.
Date: May 4, 1917
Creator: Roper, Ira T.
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Altus Weekly News. (Altus, Okla.), Vol. 18, No. 10, Ed. 1 Thursday, May 4, 1916 (open access)

The Altus Weekly News. (Altus, Okla.), Vol. 18, No. 10, Ed. 1 Thursday, May 4, 1916

Weekly newspaper from Altus, Oklahoma that includes local, county, state, and national news along with advertising.
Date: May 4, 1916
Creator: Orr, J. P.
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Cushing Independent (Cushing, Okla.), Vol. 1, No. 36, Ed. 1 Friday, May 4, 1917 (open access)

The Cushing Independent (Cushing, Okla.), Vol. 1, No. 36, Ed. 1 Friday, May 4, 1917

Weekly newspaper from Cushing, Oklahoma that includes local, state, and national news along with advertising.
Date: May 4, 1917
Creator: Roff, Charles H.
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Oklahoma Safeguard. (Guthrie, Okla.), Vol. 11, No. 14, Ed. 1 Thursday, May 4, 1905 (open access)

The Oklahoma Safeguard. (Guthrie, Okla.), Vol. 11, No. 14, Ed. 1 Thursday, May 4, 1905

Weekly newspaper from Guthrie, Oklahoma Territory that includes local, territorial, and national news along with advertising.
Date: May 4, 1905
Creator: Buchanan, C. A.
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Guymon Herald. (Guymon, Okla. Terr.), Vol. 15, No. 11, Ed. 1 Thursday, May 4, 1905 (open access)

The Guymon Herald. (Guymon, Okla. Terr.), Vol. 15, No. 11, Ed. 1 Thursday, May 4, 1905

Weekly newspaper from Guymon, Oklahoma Territory that includes local, territorial, and national news along with advertising.
Date: May 4, 1905
Creator: unknown
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Guymon Herald. (Guymon, Okla.), Vol. 26, No. 9, Ed. 1 Thursday, May 4, 1916 (open access)

The Guymon Herald. (Guymon, Okla.), Vol. 26, No. 9, Ed. 1 Thursday, May 4, 1916

Weekly newspaper from Guymon, Oklahoma that includes local, state, and national news along with advertising.
Date: May 4, 1916
Creator: Denny, J. Q.
Object Type: Newspaper
System: The Gateway to Oklahoma History
Cushing Independent. (Cushing, Okla.), Vol. 10, No. 21, Ed. 1 Thursday, May 4, 1911 (open access)

Cushing Independent. (Cushing, Okla.), Vol. 10, No. 21, Ed. 1 Thursday, May 4, 1911

Weekly newspaper from Cushing, Oklahoma that includes local, state, and national news along with advertising.
Date: May 4, 1911
Creator: Holland, Al. H.
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Guymon Herald. (Guymon, Okla.), Vol. 32, No. 10, Ed. 1 Thursday, May 4, 1922 (open access)

The Guymon Herald. (Guymon, Okla.), Vol. 32, No. 10, Ed. 1 Thursday, May 4, 1922

Weekly newspaper from Guymon, Oklahoma that includes local, state, and national news along with advertising.
Date: May 4, 1922
Creator: unknown
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Crowder City Guardian (Crowder, Oklahoma), Vol. 3, No. 21, Ed. 1 Monday, May 4, 1908 (open access)

The Crowder City Guardian (Crowder, Oklahoma), Vol. 3, No. 21, Ed. 1 Monday, May 4, 1908

Weekly newspaper from Crowder, Oklahoma that includes local, state, and national news along with advertising.
Date: May 4, 1908
Creator: Barrow, A. E.
Object Type: Newspaper
System: The Gateway to Oklahoma History
The Kiowa Sentinel (Kiowa, Indian Terr.), Vol. 3, No. 18, Ed. 1 Friday, May 4, 1906 (open access)

The Kiowa Sentinel (Kiowa, Indian Terr.), Vol. 3, No. 18, Ed. 1 Friday, May 4, 1906

Weekly newspaper from Kiowa, Indian Territory that includes local, territorial, and national news along with advertising.
Date: May 4, 1906
Creator: Vernon, John C.
Object Type: Newspaper
System: The Gateway to Oklahoma History