Photograph of a scene from the American Indian Cultural Society Gourd Dance.

Photograph of a scene from the American Indian Cultural Society Gourd Dance.

Photograph of a scene from the American Indian Cultural Society Gourd Dance.

Photograph of a scene from the American Indian Cultural Society Gourd Dance.

Photograph of a scene from the American Indian Cultural Society Gourd Dance.

A newspaper clipping featuring an article on Dr. Jack Davis, who is the dean of the School of Visual arts. Davis hopes that a $4.3 million dollar grant will show public schools that an education based on the arts increases student achievements in all fields. Davis is also co-director of North Texas Institute for Educators on the Visual Arts, an art education consortium, whose belief is that visual image is a powerful learning tool.

Newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.

SiC based ceramics have been identified as the leading candidate materials for elevated temperature applications in harsh oxidation/corrosion environments. It has been established that a protective coating can be effectively used to avoid problems with excessive oxidation and hot corrosion. However, to date, no coating configuration has been developed that can withstand the rigorous requirements imposed by such applications. Chemical vapor deposited (CVD) mullite coatings due to their desirable properties of toughness, corrosion resistance, and good coefficient of thermal expansion match with SiC are being developed as a potential solution. Formation of mullite on ceramic substrates via chemical vapor deposition was investigated. Thermodynamic calculations performed on the AlCl{sub 3}- SiCl{sub 4}-CO{sub 2}-H{sub 2} system were used to construct equilibrium CVD phase diagrams. Through process optimization, crystalline CVD mullite coatings have been successfully grown on SiC and Si{sub 3}N{sub 4} substrates. Results from the thermodynamic analysis, process optimization, and effect of various process parameters on deposition rate and coating morphology are discussed.

Faculty recital presented at the UNT College of Music Recital Hall.

Semiweekly newspaper from Gilmer, Texas that includes local, state, and national news along with advertising.

The technical progress achieved during the period 2 October 1995 through 31 March 1996 on Contract No. DE-AC03-91SF18852, Radioisotope Generators and Ancillary Activities is described herein. This report is organized by the program task structure as follows: spacecraft integration and liaison; engineering support; safety; qualified unicouple fabrication; ETG fabrication, assembly, and test; ground support equipment (GSE); RTG shipping and launch support; designs, reviews, and mission applications; project management, quality assurance and reliability, contract changes, non-capital CAGO acquisition, and CAGO maintenance; contract acquired government-owned property (CAGO) acquisition; and program calendars.

A series of CuMgCeO{sub x} catalysts have been prepared. Range of Cu dispersion, determined by N{sub 2}O titration, was 19-48% and are among the highest reported in the literature for Cu-based methanol and higher alcohol synthesis catalysts. Kinetics of MeOH and EtOH coupling reactions on Cu/ZnO and K-Cu/MgO/CeO{sub 2} catalysts indicate that Cu promotes alcohol dehydrogenation. Acetaldehyde is a reactive intermediate. High-pressure isobutanol synthesis studies have been carried out on K- and Cs-promoted Cu/MgO/CeO{sub 2} catalysts. The K promoter is more active than Cs for CO conversion, but the Cs promoter activates the C{sub 1} to C{sub 2} step more effectively. Catalysts with high alkali loading resulted in low conversions. Temperature programmed surface reaction studies of MeOH, EtOH, and acetaldehyde on MgO/CeO{sub 2}-based Cu catalysts show evolution of acetone, crotonaldehyde, methyl ethyl ketone, H2, carbon oxides. Neither EtOH nor acetaldehyde produces propionaldehyde or 1- propanol, suggesting that these C{sub 3} species can only form via reactions involving C{sub 1} and C{sub 2} oxygenate species.

Semiweekly newspaper from Pawhuska, Oklahoma that includes local, state, and national news along with advertising.

Daily newspaper from Perry, Oklahoma that includes local, state, and national news along with advertising.

Photograph used for a newspaper owned by the Oklahoma Publishing Company.

Additional pressure fluctuation data was recorded from the ISU power plants two CFB boilers. Absolute pressure fluctuations were measured immediately above the distributor nozzles and near the top of the CFB boilers. The fluctuations measured near the bottom of the bed exhibit a highly oscillatory (0.25-0.3 Hz) phenomena. This {open_quotes}square wave{close_quotes} pressure signal is observed at all times of the day and under different boiler loadings. Steps were taken to insure that abasing was not the cause of the observed pressure dynamics. It is hypothesized that these fluctuations are the result of the coal feed system, and are not related to the CFB hydrodynamics. Pressure fluctuations measured near the top of the bed do not show this dominant periodic behavior attributed to the coal feed system. The Bode plots of pressure fluctuations in this region show a near -40 dB/decade roll-off and a cornering frequency of around 0.07 Hz. This result suggests that the pressure dynamics in industrial scale CFBs may be governed by a wave phenomenon similar to that observed in the laboratory scale circulating fluidized beds. This result cannot be confined until more is known about the boiler control dynamics, and more extensive boiler instrumentation is available.

The overall objective of the proposed research program is to explore the potential application of a new invention involving a multistage column equipped with vortex-inducing loop-flow contactors (hereafter referred to as the multistage column) for fine coal cleaning process. The research work will identify the design parameters and their effects on the performance of the separation process. The results of this study will provide an engineering basis for further development of this technology in coal cleaning and in the general areas of fluid/particle separation. In the last quarter, we investigated the mixing and loop flow (circulation) behaviors around the contactors. In this quarter, the fine coal beneficiation tests were carried out in the multistage column and conventional column.

The objective is to develop an oxidation/condensation route for synthesis of acrylates/methacrylates from syngas. The investigators are also studying the dehydrogenation-condensation routes, based on its merits proven by studies at NCSU/RTI. The thermodynamics of dehydrogenaton-condensation route show its feasibility, and it is likely that the fluid will be more stable under reducing conditions. Accomplishments for the past quarter are discussed for the following tasks: proprionate synthesis; condensation catalysis; and slurry reactor studies. Some of the highlights are: Eastman has developed an improved catalyst system for the Mo-catalyzed carbonization of ethylene which accelerates the process by 1.5-3 fold. Bechtel has developed the preliminary cost estimates for a conceptual process design to produce proprionic anhydrite via ethylene carbonylation; RTI has continued to further discern the acid-base properties of the two best catalysts (V-Si-Pt 1:10:2.8 and 10% Ta/NALCO 1034-A) for condensation of proprionic anhydride and formaldehyde to give the maximum yield of methacrylic acid.

The objective of this work is to demonstrate the use of indigenous microbes as a method of profile control in waterfloods. It is expected that as the microbial population is induced to increase, that the expanded biomass will selectively block the more permeable zones of the reservoir thereby forcing injection water to flow through the less permeable zones which will result in improved sweep efficiency. This increase in microbial population will be accomplished by injecting a nutrient solution into four injectors. Four other injectors will act as control wells. During Phase 1, two wells will be cored through the zone of interest. The core will be subjected to special core analyses in order to arrive at the optimum nutrient formulation. During Phase 2, nutrient injection will begin, the results monitored, and adjustments to the nutrient composition made, if necessary. Phase 2 also will include the drilling of three wells for post-mortem core analysis. Phase 3 will focus on technology transfer of the results. It should be pointed out that one expected outcome of this new technology will be a prolongation of economical waterflooding operations, i.e. economical oil recovery should continue for much longer periods in the producing wells subjected to …

A newspaper clipping featuring an article on Dr. William McCarter and Dr. Jack Davis, co-directors of North Texas Institute for Educators on the Visual Arts who will recieve a total of $3.43 million to promote the reform of art education in public schools. McCarter said a grant from the Annenberg Foundation will provide $1.43 million and the Getty Center for Education in the Arts will provide $ 2 million in matching funds.