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COAL PARTICLE FLOW PATTERNS FOR O{sub 2} ENRICHED, LOW NO{sub x} BURNERS (open access)

COAL PARTICLE FLOW PATTERNS FOR O{sub 2} ENRICHED, LOW NO{sub x} BURNERS

This year we focused on investigating the effect of particulate fines in both the hot flow and cold flow studies. This report summarizes the results of those studies in the hot flow and cold flow geometries. In the hot flow studies, increasing the fines content in the pulverized coal enhances combustion stability producing attached flames that were otherwise detached. NO{sub x} emissions are reduced by up to 50% through flame attachment. For always-attached flames, increasing the fraction of fines had little impact on total NO emissions. In the cold flow studies we found that the presence of the fine particles enhanced the velocity fluctuations of the coarse particles. The presence of coarse particles, however, did not affect the motion of the fine particles.
Date: April 24, 2004
Creator: Curtis, Jennifer Sinclair
Object Type: Report
System: The UNT Digital Library
The Baytown Sun (Baytown, Tex.), Vol. 82, No. 145, Ed. 1 Saturday, April 24, 2004 (open access)

The Baytown Sun (Baytown, Tex.), Vol. 82, No. 145, Ed. 1 Saturday, April 24, 2004

Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date: April 24, 2004
Creator: Cash, Wanda Garner
Object Type: Newspaper
System: The Portal to Texas History
[Funeral Program for Espinola Willie Mae Tucker, April 24, 2004] (open access)

[Funeral Program for Espinola Willie Mae Tucker, April 24, 2004]

Funeral program for Espinola Willie Mae (Lady) Tucker, born April 8, 1941 and died April 19, 2004. The funeral was held April 24, 2004 at Greater Love Missionary Baptist Church, officiated by Dr. Lester J. Gillespie, Sr. Funeral arrangements were made through the Lewis Funeral Home, and she was buried in the Meadowlawn Memorial Park in San Antonio, Texas.
Date: April 24, 2004
Creator: unknown
Object Type: Pamphlet
System: The Portal to Texas History
[Email from Daniel Graney] (open access)

[Email from Daniel Graney]

Email from Daniel Graney to Rick Walker about the number of Texas Stonewall Democratic Caucus board members.
Date: April 24, 2004
Creator: Graney, Daniel
Object Type: Text
System: The UNT Digital Library
[Email error message] (open access)

[Email error message]

Email notice of a failed message.
Date: April 24, 2004
Creator: unknown
Object Type: Text
System: The UNT Digital Library
Optimal file-bundle caching algorithms for data-grids (open access)

Optimal file-bundle caching algorithms for data-grids

The file-bundle caching problem arises frequently in scientific applications where jobs need to process several files simultaneously. Consider a host system in a data-grid that maintains a staging disk or disk cache for servicing jobs of file requests. In this environment, a job can only be serviced if all its file requests are present in the disk cache. Files must be admitted into the cache or replaced in sets of file-bundles, i.e. the set of files that must all be processed simultaneously. In this paper we show that traditional caching algorithms based on file popularity measures do not perform well in such caching environments since they are not sensitive to the inter-file dependencies and may hold in the cache non-relevant combinations of files. We present and analyze a new caching algorithm for maximizing the throughput of jobs and minimizing data replacement costs to such data-grid hosts. We tested the new algorithm using a disk cache simulation model under a wide range of conditions such as file request distributions, relative cache size, file size distribution, etc. In all these cases, the results show significant improvement as compared with traditional caching algorithms.
Date: April 24, 2004
Creator: Otoo, Ekow; Rotem, Doron & Romosan, Alexandru
Object Type: Article
System: The UNT Digital Library
[Email correspondence] (open access)

[Email correspondence]

Email correspondence between Stan Main, Al Daniels, and Jack (last name unknown) about volunteer opportunities.
Date: April 24, 2004
Creator: Main, Stan
Object Type: Letter
System: The UNT Digital Library
[Cleo Parker Robinson Dance Company, tape 1 of 2] captions transcript

[Cleo Parker Robinson Dance Company, tape 1 of 2]

Video recording from The Black Academy of Arts and Letters recorded during The Cleo Parker Robinson Dance Company live dance performance held on April 24th, 2004 on the Naomi Bruton main stage. The footage shows an African American dance company performing a variety of interpretive and contemporary choreographies.
Date: April 24, 2004
Creator: Cleo Parker Robinson Dance Company
Object Type: Video
System: The UNT Digital Library