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ICF quarterly report October-December 1998 volume 8, number 1

Description: 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 (firs… more
Date: September 8, 1998
Creator: Feit, M
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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Photovoltaic module performance and durability following long-term field exposure

Description: 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 mod… more
Date: September 8, 1998
Creator: Ellibee, D. E.; Hansen, B. R.; King, D. L.; Kratochvil, J. A. & Quintana, M. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

On-loom, real-time, noncontact detection of fabric defects by ultrasonic imaging.

Description: 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… more
Date: September 8, 1998
Creator: Chien, H. T.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Organic Foods and the Proposed Federal Certification and Labeling Program

Description: 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,
Date: September 8, 1998
Creator: Rawson, Jean M.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Using Artificial Neural Networks to Assess Microbial Communities

Description: 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 expos… more
Date: September 8, 1998
Creator: Almeida, J. S.; Brand, C. C.; Palumbo, A. V.; Pfiffner, S. M. & Schryver, J. C.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

CHAR CRYSTALLINE TRANSFORMATIONS DURING COAL COMBUSTION AND THEIR IMPLICATIONS FOR CARBON BURNOUT

Description: 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 i… more
Date: September 8, 1998
Creator: HURT, ROBERT H.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Electrochemical Decontamination of Painted and Heavily Corroded Metals

Description: 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 proce… more
Date: September 8, 1998
Creator: Marczak, S.; Anderson, J. & Dziewinski, J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Framing a bilateral US-Russian geologic repository initiative

Description: 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 … more
Date: September 8, 1998
Creator: Jardine, L J
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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