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The Baytown Sun (Baytown, Tex.), Vol. 82, No. 88, Ed. 1 Saturday, February 28, 2004 (open access)

The Baytown Sun (Baytown, Tex.), Vol. 82, No. 88, Ed. 1 Saturday, February 28, 2004

Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date: February 28, 2004
Creator: Cash, Wanda Garner
Object Type: Newspaper
System: The Portal to Texas History
Constraints on flow regimes in wide-aperture fractures (open access)

Constraints on flow regimes in wide-aperture fractures

In recent years, significant advances have been made in our understanding of the complex flow processes in individual fractures, aided by flow visualization experiments and conceptual modeling efforts. These advances have led to the recognition of several flow regimes in individual fractures subjected to different initial and boundary conditions. Of these, the most important regimes are film flow, rivulet flow, and sliding of droplets. The existence of such significantly dissimilar flow regimes has been a major hindrance in the development of self-consistent conceptual models of flow for single fractures that encompass all the flow regimes. The objective of this study is to delineate the existence of the different flow regimes in individual fractures. For steady-state flow conditions, we developed physical constraints on the different flow regimes that satisfy minimum energy configurations, which enabled us to segregate the wide range of fracture transmissivity (volumetric flow rate per fracture width) into several flow regimes. These are, in increasing order of flow rate, flow of adsorbed films, flow of sliding drops, rivulet flow, stable film flow, and unstable (turbulent) film flow. The scope of this study is limited to wide-aperture fractures with the flow on the opposing sides of fracture being independent.
Date: February 28, 2004
Creator: Ghezzehei, Teamrat A.
Object Type: Article
System: The UNT Digital Library
[Dancin' Panorama...Jamaican Style] captions transcript

[Dancin' Panorama...Jamaican Style]

Video recording from The Black Academy of Arts and Letters recorded during their Dancin' Panorama...Jamaican Style event in 2004. This video features dance performances starring the Stella Maris Young Adult Dance Ensemble celebrating African-Caribbean cultural dance live on the Naomi Bruton Main Stage.
Date: February 28, 2004
Creator: unknown
Object Type: Video
System: The UNT Digital Library
Discharge model for the lithium iron-phosphate electrode (open access)

Discharge model for the lithium iron-phosphate electrode

This paper develops a mathematical model for lithium intercalation and phase change in an iron phosphate-based lithium-ion cell in order to understand the cause for the low power capability of the material. The juxtaposition of the two phases is assumed to be in the form of a shrinking core, where a shell of one phase covers a core of the second phase. Diffusion of lithium through the shell and the movement of the phase interface are described and incorporated into a porous electrode model consisting of two different particle sizes. Open-circuit measurements are used to estimate the composition ranges of the single-phase region. Model-experimental comparisons under constant current show that ohmic drops in the matrix phase, contact resistances between the current collector and the porous matrix, and transport limitations in the iron phosphate particle limit the power capability of the cells. Various design options, consisting of decreasing the ohmic drops, using smaller particles, and substituting the liquid electrolyte by a gel are explored, and their relative importance discussed. The model developed in this paper can be used as a means of optimizing the cell design to suit a particular application.
Date: February 28, 2004
Creator: Srinivasan, Venkat & Newman, John
Object Type: Article
System: The UNT Digital Library
Generation IV Nuclear Energy Systems Construction Cost Reductions Through the Use of Virtual Environments (open access)

Generation IV Nuclear Energy Systems Construction Cost Reductions Through the Use of Virtual Environments

The objective of this multi-phase project is to demonstrate the feasibility and effectiveness of using full-scale virtual reality simulation in the design, construction, and maintenance of future nuclear power plants. The project will test the suitability of immersive virtual reality technology to aid engineers in the design of the next generation nuclear power plant and to evaluate potential cost reductions that can be realized by optimization of installation and construction sequences. The intent is to see if this type of information technology can be used in capacities similar to those currently filled by full-scale physical mockups. This report presents the results of the completed project.
Date: February 28, 2004
Creator: Shaw, Timothy & Whisker, Vaugh
Object Type: Report
System: The UNT Digital Library
Optimization of a natural graphite/iron phosphate lithium-ion cell (open access)

Optimization of a natural graphite/iron phosphate lithium-ion cell

None
Date: February 28, 2004
Creator: Srinivasan, Venkat & Newman, John
Object Type: Article
System: The UNT Digital Library
Oral History Interview with Chester Reese, February 28, 2004 transcript

Oral History Interview with Chester Reese, February 28, 2004

The National Museum of the Pacific War presents an oral interview with Chester Reese. Reese joined the Army in 1936. He was assigned to the First Infantry Regiment in Wyoming. In 1939, Reese did not re-enlist in the Army, but joined the Marine Corps instead. After basic training, Reese was sent to Hawaii, where he was when the Japanese attacked. He unlimbered his machine gun, set it up and defended Hickam Field. Reese served as an enlisted man on the subsequent Board of Inquiry into the attack at Pearl Harbor. His job was to sort out people who wanted to testify to the Board. Later in 1942, Reese was attached to the 6th Marine Regiment and headed for New Zealand, then Guadalcanal. Reese received a battlefield commission on Guadalcanal. After leaving the Solomons, Reese returned to the US for training. In early 1945, he went to the Mariana Islands and cleared out Japanese outpost on some of the outlying islands: Sarigan, Anatahan, and Maug.
Date: February 28, 2004
Creator: Reese, Chester E.
Object Type: Sound
System: The Portal to Texas History
Oral History Interview with Chester Reese, February 28, 2004 (open access)

Oral History Interview with Chester Reese, February 28, 2004

The National Museum of the Pacific War presents an oral interview with Chester Reese. Reese joined the Army in 1936. He was assigned to the First Infantry Regiment in Wyoming. In 1939, Reese did not re-enlist in the Army, but joined the Marine Corps instead. After basic training, Reese was sent to Hawaii, where he was when the Japanese attacked. He unlimbered his machine gun, set it up and defended Hickam Field. Reese served as an enlisted man on the subsequent Board of Inquiry into the attack at Pearl Harbor. His job was to sort out people who wanted to testify to the Board. Later in 1942, Reese was attached to the 6th Marine Regiment and headed for New Zealand, then Guadalcanal. Reese received a battlefield commission on Guadalcanal. After leaving the Solomons, Reese returned to the US for training. In early 1945, he went to the Mariana Islands and cleared out Japanese outpost on some of the outlying islands: Sarigan, Anatahan, and Maug.
Date: February 28, 2004
Creator: Reese, Chester E.
Object Type: Text
System: The Portal to Texas History
Power Systems Development Facility Gasification Test Campaing TC14 (open access)

Power Systems Development Facility Gasification Test Campaing TC14

In support of technology development to utilize coal for efficient, affordable, and environmentally clean power generation, the Power Systems Development Facility (PSDF) located in Wilsonville, Alabama, routinely demonstrates gasification technologies using various types of coals. The PSDF is an engineering scale demonstration of key features of advanced coal-fired power systems, including a KBR Transport Gasifier, a hot gas particulate control device (PCD), advanced syngas cleanup systems, and high pressure solids handling systems. This report details test campaign TC14 of the PSDF gasification process. TC14 began on February 16, 2004, and lasted until February 28, 2004, accumulating 214 hours of operation using Powder River Basin (PRB) subbituminous coal. The gasifier operating temperatures varied from 1760 to 1810 F at pressures from 188 to 212 psig during steady air blown operations and approximately 160 psig during oxygen blown operations.
Date: February 28, 2004
Creator: Southern Company Services
Object Type: Report
System: The UNT Digital Library
X-ray photoelectron spectroscopy of negative electrodes from high-power lithium-ion cells showing various levels of power fade (open access)

X-ray photoelectron spectroscopy of negative electrodes from high-power lithium-ion cells showing various levels of power fade

High-power lithium-ion cells for transportation applications are being developed and studied at Argonne National Laboratory. The current generation of cells containing LiNi{sub 0.8}Co{sub 0.15}Al{sub 0.05}O{sub 2}-based cathodes, graphite-based anodes, and LiPF6-based electrolytes show loss of capacity and power during accelerated testing at elevated temperatures. Negative electrode samples harvested from some cells that showed varying degrees of power and capacity fade were examined by X-ray photoelectron spectroscopy (XPS). The samples exhibited a surface film on the graphite, which was thicker on samples from cells that showed higher fade. Furthermore, solvent-based compounds were dominant on samples from low power fade cells, whereas LiPF{sub 6}-based products were dominant on samples from high power fade cells. The effect of sample rinsing and air exposure is discussed. Mechanisms are proposed to explain the formation of compounds suggested by the XPS data.
Date: February 28, 2004
Creator: Herstedt, Marie; Abraham, Daniel P. & Kerr, John B.
Object Type: Article
System: The UNT Digital Library