This issue of the ICF Quarterly Report focuses on the final section of the 192-arm, 1.8-MJ National Ignition Facility (NIF). We describe both technological advances necessary for optimal utilization of the delivered energy and the hohlraum physics resulting from extremely high energy densities. Two articles belong to the first category. The conversion of infrared light to ultraviolet occurs at the tripler in the NIF's Final Optics Assembly. It is then necessary to separate any unconverted (first- and second-harmonic) light from the tripled-frequency light passed to the target. Large-Aperture Color-Separation Gratings for Diverting Unconverted Light Away from the NIF Target describes the design and fabrication of novel diffraction gratings that fulfill this function. In both direct- and indirect-drive ICF, the symmetry of the capsule as it compresses is crucial. The NIF will have 48 clusters of four beams incident on targets. Optimization of Beam Angles for the National Ignition Facility (p. 15) presents the rationale used to assign beam angles for cylindrical indirect drive while still allowing direct-drive and tetrahedral indirect-drive experiments to be performed.

Our investigations of both new and field-aged photovoltaic modules have indicated that, in general, today's commercially available modules area highly reliable product. However, by using new test procedures, subtle failure mechanisms have also been identified that must be addressed in order to achieve 30-year module lifetimes. This paper summarizes diagnostic test procedures, results, and implications of in-depth investigations of the performance and durability characteristics of commercial modules after long-term field exposure. A collaborative effort with U.S. module manufacturers aimed at achieving 30-year module lifetimes is also described.

A noncontact, on-loom ultrasonic inspection technique was developed for real-time 100% defect inspection of fabrics. A prototype was built and tested successfully on loom. The system is compact, rugged, low cost, requires minimal maintenance, is not sensitive to fabric color and vibration, and can easily be adapted to current loom configurations. Moreover, it can detect defects in both the pick and warp directions. The system is capable of determining the size, location, and orientation of each defect. To further improve the system, air-coupled transducers with higher efficiency and sensitivity need to be developed. Advanced detection algorithms also need to be developed for better classification and categorization of defects in real-time.

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

The National Museum of the Pacific War presents an oral interview with Bob Layher. Layher was a member of the first squadron of the American Volunteer Group (AVG), nicknamed the Flying Tigers. While stationed in Rangoon in January 1942, the group sent Pete Wright into the air to scare off an enemy bomber. Wright's plane malfunctioned on the approach, and he veered off the runway, killing a captain. On 5 March 1942, Layher nearly lost control of his own plane during a close formation drill. The group had been asked to escort Chiang Kai-shek and to perform a slow roll. Being at the tail end of the formation, Layher was unable to fly fast enough to perform the maneuver safely. By the time he recovered and rejoined the formation, their leader had dropped out due to an equipment malfunction. So, Pappy Boyington led the group, taking them off course and expending more fuel than anticipated. Layher crash-landed on a remote trail and was discovered by unfriendly natives. Not having worn his blood chit that day, he narrowly escaped execution and was eventually reunited with his group.

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

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

The National Museum of the Pacific War presents an oral interview with Bob Layher. Layher was a member of the first squadron of the American Volunteer Group (AVG), nicknamed the Flying Tigers. While stationed in Rangoon in January 1942, the group sent Pete Wright into the air to scare off an enemy bomber. Wright's plane malfunctioned on the approach, and he veered off the runway, killing a captain. On 5 March 1942, Layher nearly lost control of his own plane during a close formation drill. The group had been asked to escort Chiang Kai-shek and to perform a slow roll. Being at the tail end of the formation, Layher was unable to fly fast enough to perform the maneuver safely. By the time he recovered and rejoined the formation, their leader had dropped out due to an equipment malfunction. So, Pappy Boyington led the group, taking them off course and expending more fuel than anticipated. Layher crash-landed on a remote trail and was discovered by unfriendly natives. Not having worn his blood chit that day, he narrowly escaped execution and was eventually reunited with his group.

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

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

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

In mid-December 1997, the U.S. Department of Agriculture (USDA) published in the Federal Register a proposed rule to establish national standards for the marketing of organically produced foods. 1 The purpose of the rule is to give consumers confidence in the legitimacy of all products sold as organic, permit legal action against these who use the term fraudulently, and increase the supply and variety of available organic products, especially of meat and poultry products,

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

We are evaluating artificial neural networks (ANNs) as tools for assessing changes in soil microbial communities following exposure to metals. We analyzed signature lipid biomarker data collected from two soil microcosm experiments using an autoassociative ANN. In one experiment, the microcosms were exposed to O, 100, or 250 ppm of metals, and in the other experiment the microcosms were exposed to O or 500 ppm of metals. The ANNs were able to distinguish between microcosms exposed and not exposed to metals in both experiments.

Recent work at Sandia National Laboratories, Imperial College, and the U.K. utility PowerGen, has identified an important mechanism believed to have a large influence on unburned carbon levels from pulverized coal-fired boilers. That mechanism is char carbon crystalline rearrangements on subsecond times scales at temperatures of 1800 - 2500 K, which lead to char deactivation in the flame zones of furnaces. The so-called thermal annealing of carbons is a well known phenomenon, but its key role in carbon burnout has only recently been appreciated, and there is a lack of quantitative data in this time/temperature range. In addition, a new fundamental tool has recently become available to study crystalline transformations, namely high resolution transmission electron microscopy (HRTEM) fringe imaging, which provides a wealth of information on the nature and degree of crystallinity in carbon materials such as coal chars. Motivated by these new developments, this University Coal Research project has been initiated with the following two goals:  to determine transient, high-temperature, thermal deactivation kinetics as a function of parent coal and temperature history.  to characterize the effect of this thermal treatment on carbon crystalline structure through high-resolution transmission electron microscopy and specialized, quantitative image analysis. Work is currently …

The radioactive metal wastes that are generated from nuclear fuel plants and radiochemical laboratories are mainly contaminated by the surface deposition of radioactive isotopes. There are presently several techniques used in removing surface contamination involving physical and chemical processes. However, there has been very little research done in the area of soiled, heavily oxidized, and painted metals. Researchers at Los Alamos National Laboratory have been developing electrochemical procedures for the decontamination of bare and painted metal objects. These methods have been found to be effective on highly corroded as well as relatively new metals. This study has been successful in decontaminating projectiles and shrapnel excavated during environmental restoration projects after 40+ years of exposure to the elements. Heavily corroded augers used in sampling activities throughout the area were also successfully decontaminated. This process has demonstrated its effectiveness and offers several advantages over the present metal decontamination practices of media blasting and chemical solvents. These advantages include the addition of no toxic or hazardous chemicals, low operating temperature and pressure, and easily scaleable equipment. It is in their future plans to use this process in the decontamination of gloveboxes destined for disposal as TRU waste.

This document summarizes a framework for the development of a bilateral United States�Russian geologic repository initiative to enable cooperative work on the science and technology of geologic disposal of high-level nuclear wastes and fissile-containing materials. Three different types of integrated technical activities in Russia are employed to focus and organize a Department of Energy (DOE) Office of Civilian Radioactive Waste Management (RW) FY00 initiative. We have specified the items for initial negotiations with the Russians for start-up activities in FY99 and early FY00. These first interactions will generate other activities which, by utilizing Russia�s unique capabilities, may assist us in the development and validation of the US geologic repository program. The current International Science and Technology Center (ISTC) cooperative study of 30years of heat effects on underground hardrock rock media at the closed city of Krasnoyarsk-26 (Zheleznorgorsk) is but one example of such a Russian geologic repository analogue project that may assist the US geologic repository program.

Student newspaper from the University of North Texas in Denton, Texas that includes local, state, national, and campus news along with advertising. Formerly The Campus Chat.

Student newspaper of the University of Oklahoma in Norman, Oklahoma that includes national, local, and campus news along with advertising.

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

Photograph of ...

Photograph of a group of female volleyball players.

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