Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Baptist Medical Center today."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Trina Haslim stands in front of her earth-sheltered home in southeast Oklahoma City."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "The family room in the Doyle Mainus home south of Oklahoma City is cozy and rustic."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "The exterior of Jerry and LaVena Moss' home near Sulphur, is rustic."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Garrett Hellman, Fullerton, Calif., and Michael Manaugh, Oklahoma City, hold the 'quiet books' their grandmother Barbara Hellman made for them."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "The Moss home nestles on rolling hills."

The battery charger has a full-wave rectifier in series with a transformer isolated 20 kHz dc-dc converter with high frequency switches which are programmed to actively shape the input ac line current to be a mirror image of the ac line voltage. The power circuit is capable of operating at 2 kW peak and 1 kW average power. The BC/SCI has two major subsystems: (1) the battery charger power electronics with its controls; and (2) a microcomputer subsystem which is used to acquire battery terminal data and exercise the state-of-charge software programs. The state-of-charge definition employed is the energy remaining in the battery when extracted at a 10 kW rate divided by the energy capacity of a fully charged new battery. The battery charger circuit is an isolated boost converter operating at an internal frequency of 20 kHz. The switches selected for the battery charger are the single most important item in determining its efficiency. The combination of voltage and current requirements dictated the use of high power NPN Darlington switching transistors. The power circuit topology developed is a three switch design utilizing a power FET on the center tap of the isolation transformer and the power Darlingtons on each …

The activities of the Biocatalysis Research Activity during FY 1983 were organized into the Biocatalysis and Molecular Modeling work elements and a supporting planning and analysis function. In the biocatalysis work element, progress was made in developing a method for stabilizing genetically engineered traits in microorganisms, refining a technique for monitoring cells that have been genetically engineered, identifying strains of fungi for highly efficient preprocessing of biomass for biocatalyzed processes, and determining molecular level conditions for optimizing the efficiency of bioreactors. In the Molecular Modeling work element, a preliminary model of the behavior of enzymes was developed. Also, a preliminary investigation of the potential for synthesizing enzymes for use in electrochemical processes was completed. As part of the Activity's supporting planning and analysis efforts, contact with industry and universities was made to define key biocatalysis technical issues and to broaden the range of potential participants in the Activity. Additionally, analyses were conducted to identify and evaluate potential concepts for future research funding by the Activity. 1 figure, 2 tables.

Tests were performed on an improved battery charger manufactured by Lester Electrical of Nebraska, Inc. This charger was installed in a South Coast Technology Rabbit No. 4, which was equipped with lead-acid batteries produced by ESB Company. The primary purpose of the testing was to develop test methodologies for battery charger evaluation. To this end tests were developed to characterize the charger in terms of its charge algorithm and to assess the effects of battery initial state of charge and temperature on charger and battery efficiency. Tests showed this charger to be a considerable improvement in the state of the art for electric vehicle chargers.

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

Photograph used for a story in the Daily Oklahoman newspaper.

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.

Semi-weekly newspaper from Livingston, Texas that includes local, state and national news along with advertising.

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

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Jeff Willis peers over the top of Bob Slagle as they size up a putt during the championship flight finals of the Spring Fourball Sunday."

Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "As part of a protest regarding the use of tax dollars for military purposes, Allen Parleir, hands out brochures Sunday evening at Oklahoma City's main Post Office."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Bob Slagle launches a putt on the first hole of the Oklahoma CIty Spring Fourball championship match Sunday."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Eddie Saxon watches his drive as does his partner Jess Jennings, in background, during the championship flight finals of the Oklahoma City Spring Fourball golf tournament at John Conrad Golf Course in Midwest City Saxon and Jennings lost on Sunday."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Bob Slagle tries to correct a short iron shot with a little verbal encouragement during Sunday's championship match of the Oklahoma City Spring Fourball golf tournament in Midwest City."

Photograph used for a story in the Daily Oklahoman newspaper. Caption: "Eddie Saxon lines up putt during championship flight finals of Oklahoma City's Spring Fourball golf tournament."

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

The potential of a suitably designed and economically manufactured Stirling engine as the energy conversion subsystem of a paraboloidal dish-Stirling solar thermal power module has been estimated. Results obtained by elementary cycle analyses have been shown to match quite well the performance characteristics of an advanced kinematic Stirling engine, the United Stirling P-40, as established by current prototypes of the engine and by a more sophisticated analytic model of its advanced derivative. In addition to performance, brief consideration has been given to other Stirling engine criteria such as durability, reliability, and serviceability. Production costs have not been considered here.