Calculation of possible off-gases expected during the fabrication of SYNROC showed that volatilization of cesium would be a significant problem. Samples of the cesium containing minerals pollucite, CsAlSi/sub 2/O/sub 6/, and barium-cesium hollandite, (Ba,Cs)Al/sub 2/Ti/sub 6/O/sub 16/, were prepared for vaporization studies. Fifteen vaporization runs were made with the hollandite samples. With dry air as the carrier gas, the vapor pressure of cesium over Ba/sub 0/ /sub 8/Cs/sub 0/ /sub 4/Al/sub 2/Ti/sub 6/O/sub 16/ was found to be about 1 x 10/sup -7/ atm at 1050/sup 0/C.

This research program has investigated the thermal stability of several ferritic stainless steels containing 15 to 18 weight percent chromium over the temperature range 400/sup 0/C to 550/sup 0/C where the 475/sup 0/C embrittlement reaction is of concern. A major part of the experimental work was concerned with the effect of ternary additions of up to 6 weight percent; aluminum on the kinetics and the magnitude of the embrittlement reaction. The work also included a binary Fe-18Cr alloy, a ternary Fe-18Cr-2Mo, and two commercial alloys, Armco type 430 and type 18SR. Resistometric studies of the kinetics of microstructural instability indicated that aluminum additions promote the tendency of chromium atoms to cluster at temperatures in the vicinity of 475/sup 0/C. The magnitude of embrittling reaction is intensified by the aluminum additions which are expected to restrict dislocation cross slip and increase the coherency strains associated with the alpha prime precipitates. Activation energy determinations for the decomposition reaction indicate that the rate controlling process is most likely determined by the diffusion of chromium, and the tendency of aluminum to enhance the clustering of chromium atoms is similar to the effect reported for molybdenum additions by previous workers.

Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Heavy machinery, scaffolding and manpower are being used to remove the 45th Infantry Division monument in downtown Oklahoma City."

Photograph used for a newspaper owned by the Oklahoma Publishing Company. Caption: "Above, a workman prepares to dismantle the monument to Oklahoma's 45th Infantry Division to make way for construction of Leadership Square, an office complex on Couch Drive in downtown Oklahoma City."

Significant progress has been made in better understanding the electron transport and reaction properties of model liquids and biological systems. The new results complement earlier studies of electrons and are important to all aspects of the interaction of radiation with matter and to the myriad of electronic processes that occur in a variety of systems. These processes range from dielectric breakdown to carcinogenesis as is illustrated in the following list of electron transport and reaction studies that were conducted in this contract period. The studies included: (1) effect of an external electric field on the electron attachment rate constant, k/sub e/, of SF/sub 6/ observed in the molecular liquids ethane and propane; (2) implications of field-dependent k/sub e/'s to dielectric breakdown in liquids; (3) influence of the electron-acceptor dipole moment on k/sub e/ in i-octane and the effect of solvent on electron-dipole interaction; (4) solvent effects on the electron-attachment process through measurements of the k/sub e/ of CCl/sub 4/ and ethyl bromide in i-octane/TMS mixtures; (5) electron attachment to reversed-micellar aggregates and comparison of the influence of the micellar water pool on the electron-capture process in the solvents i-octane and TMS; (6) correlation of diffusion-controlled k/sub e/'s with carcinogenicity and …

Photograph used for a story in the Oklahoma Times newspaper. Caption: "I-35 in northwest Oklahoma City is a maze of roads as workmen near completion of the Memorial Road interchange, right."

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Enjoying Christmas vacation before returning to classes Monday, Don Oliver, a native of Colorado, at front, and Shane Gary, a Moore West Middle High Student, go for a slide down a grassy hill beside I-35."

Photograph used for a story in the Oklahoma Times newspaper. Caption: "I-35 in northwest Oklahoma City is a maze of roads as workmen near completion of the Memorial Road interchange, right."

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Kids can initiate their own games in the tire jungle."

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Matthew Holt, left, and Matt Feaver find these treadies on the McKinney School playground in Norman still have a lot of miles on them."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Sallie Hirte browses through a shelf of fiction titles at Oklahoma County's Main Library."

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

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Bev Dahnke and Ashley Dahnke, 10, above, prepare a tray of food for guests at the Kiker mother-daughter party."

Photograph used for a story in the Oklahoma Times newspaper. Caption: "The sound of music echoed through Sooner Fashion Mall in Norman as the Highland East Middle School Choir under the direction of Carol Rauch and Molly Long, performed for the Christmas shopping crowd."

Photograph used for a story in the Oklahoma Times newspaper. Caption: "I-35 in northwest Oklahoma City is a maze of roads as workmen near completion of the Memorial Road interchange, right."

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Coming in for a rough landing are Shelly Gray, front, and Brandy Purdom."

Photograph used for a story in the Oklahoma Times newspaper. Caption: "Bill Bixby"

Weekly newspaper from Tulia, Texas that includes local, state and national news along with extensive advertising.

In the development of new and highly efficient porous electrocatalysts, two cooperative phenomena are required. The first is an increase in the electrocatalytic activity of the catalyst particle, and the second is the availability of that electrocatalyst particle for the electrochemical reaction. These two processes interact with each other in such a way that improvements in the electrochemical activity must be coupled with improvements in the availability of the electrocatalyst for reaction. Since cost effective and highly reactive electrocatalysts have been developed under this program, the utilization of the electrocatalyst particles in the porous electrode structures is addressed. Based on the performance of the electrocatalysts in porous electrode structures, it is shown that a large percentage of the electrocatalyst in anode structures is not utilized. This low utilization translates directly and dramatically into a noble metal cost penalty for the fuel cell. Dramatic improvements in the cost effectiveness of the fuel cell will be achieved by improvements in electrocatalyst catalyzation technology and electrode structure technology.

B-roll video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Video footage from the KXAS-TV/NBC station in Fort Worth, Texas, to accompany a news story.

Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.

Weekly newspaper from Rio Grande City, Texas that includes local, state and national news along with extensive advertising.

Photograph used for a story in the Oklahoma Times newspaper. Caption: "The Rev. Charles Graves, above, looks upward to the roof peak 64 feet above the ground in the new Nichols Hills Baptist Church."