A Development of On-Line Temperature Measurement Instrumentation for Gasification Process Control Progress Report (open access)

A Development of On-Line Temperature Measurement Instrumentation for Gasification Process Control Progress Report

This progress report covers continuing work to develop a temperature probe for a coal gasifier. A workable probe design requires finding answers to crucial questions involving the probe materials. We report on attempts to answer those questions. We received and studied new samples of an important thermographic phosphor, YAG:Dy. We studied the brightness as a function of dopant concentration and the relative brightnesses of the pertinent thermographic emission lines, both with respect to each other and among the phosphors. With the previously reported failure of the binder method for coatings, we are setting up a plasma-spray facility in cooperation with a subcontractor. We have been forming a network of people and organizations that may help us with various aspects of the problems at hand. This period, we approached a company with commercially successful probes, met with Tennessee Valley Authority staff (codes and coatings), and added a new faculty member to the team with materials expertise.
Date: October 15, 2000
Creator: Noel, Bruce W.
Object Type: Report
System: The UNT Digital Library
Astrometry with the MACHO Data Archive (open access)

Astrometry with the MACHO Data Archive

We present the preliminary results of our astrometric study of stellar motions along the lines of sight of the Magellanic Clouds and the Galactic bulge. We find that we are able to select stars with proper motions as small as 0.03 inch/yr from five years of PSF photometry due to the characteristic nature of the shapes the light curves of HFM stars. This shape arises from the proper motion of the object relative to the initial fixed centroid location where all photometry of the object is performed. By selecting such light curves and performing astrometry on candidate HPM stars we have discovered 154 new high proper motion (HPM) stars in 50{sup {open_square}}{sup o} from amongst the {approx} 55 million of stars observed by the MACHO project in these fields. These objects have proper motions as high as 0.5 inch/yr, luminosities ranging from V {approx} 13 to V {approx} 19, and V-R colours between 0.3 and 1.45.
Date: October 15, 2000
Creator: Drake, A. J.; Alcock, C.; Allsman, R.; Alves, D. R.; Axelrod, T. S.; Becker, A. C. et al.
Object Type: Article
System: The UNT Digital Library
Siting Evaluation for Biomass-Ethanol Production in Hawaii (open access)

Siting Evaluation for Biomass-Ethanol Production in Hawaii

This report examines four Hawaiian islands, Oahu, Hawaii, Maui, and Kauai, to identify three best combinations of potential sites and crops for producing dedicated supplies of biomass for conversion to ethanol. Key technical and economic factors considered in the siting evaluation include land availability (zoning and use), land suitability (agronomic conditions), potential quantities and costs of producing biomass feedstocks, infrastructure (including water and power supplies), transportation, and potential bioresidues to supplement dedicated energy crops.
Date: October 15, 2000
Creator: Kinoshita, C.M. & Zhou, J.
Object Type: Report
System: The UNT Digital Library
Investigation of the Spherical Stellarator Concept - Final Report (open access)

Investigation of the Spherical Stellarator Concept - Final Report

This document is a final report of the U.S. DOE grant entitled ''Investigation of the Spherical Stellarator Concept'' which supported theoretical and numerical investigation of a novel fusion concept, the ultra-low-aspect-ratio stellarator system called Spherical Stellarator (SS). The research was concentrated on (a) search for principally different types of SS configurations, (b) optimization of SS configurations by varying the parameters of the coil systems, (c) finite beta and finite plasma current (including bootstrap current) equilibria in the SS, and (d) Monte Carlo particle transport simulations for the SS.
Date: October 15, 2000
Creator: Moroz, P. E.
Object Type: Report
System: The UNT Digital Library
Harmonic inverse free electron laser micro-buncher (open access)

Harmonic inverse free electron laser micro-buncher

None
Date: October 15, 2000
Creator: Pottorf, S. & Wang, X. J.
Object Type: Article
System: The UNT Digital Library
Development and Testing of a Short-Wave Radiation Model for Interpreting ARM Data. Final Report for Period January 15, 1997 - March 15, 2000 (open access)

Development and Testing of a Short-Wave Radiation Model for Interpreting ARM Data. Final Report for Period January 15, 1997 - March 15, 2000

A research program devoted to improving the understanding of atmospheric radiation processes has been supported by DOE ARM grants with Prof. Qiang Fu as the Principal Investigator. This final report summarizes our research efforts, which emphasizes the findings and their significance to the solar radiative transfer in clear atmospheres, the effects of 3-D cloud fields on the solar radiative energy budget, a better understanding of radiative properties of nonspherical ice crystals, and parameterization of radiation processes for use in the GCMs and satellite remote sensing.
Date: October 15, 2000
Creator: Fu, Qiang
Object Type: Report
System: The UNT Digital Library