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open access

Engineering the Electronic Band Structure for Multiband Solar Cells

Description: Using the unique features of the electronic band structure of GaNxAs1-x alloys, we have designed, fabricated and tested a multiband photovoltaic device. The device demonstrates an optical activity of three energy bands that absorb, and convert into electrical current, the crucial part of the solar spectrum. The performance of the device and measurements of electroluminescence, quantum efficiency and photomodulated reflectivity are analyzed in terms of the Band Anticrossing model of the electron… more
Date: July 12, 2010
Creator: Lopez, N.; Reichertz, L. A.; Yu, K. M.; Campman, K. & Walukiewicz, W.
Partner: UNT Libraries Government Documents Department
open access

Transient Heat Transfer Analysis for Ion-Exchange Waste Removal Process

Description: The small column ion exchange (SCIX) process treats low curie salt (LCS) waste before feeding it to the saltstone facility to be made into grout. Through this process, radioactive cesium from the salt solution is absorbed into the CST bed. A CST column loaded with radioactive cesium will generate significant heat from radiolytic decay. If engineering designs of the CST sorption column can not handle this thermal load, hot spots may develop locally within the column and degrade the performance o… more
Date: July 12, 2010
Creator: Lee, S.
Partner: UNT Libraries Government Documents Department
open access

Hybrid Parallelism for Volume Rendering on Large, Multi-core Systems

Description: This work studies the performance and scalability characteristics of"hybrid'"parallel programming and execution as applied to raycasting volume rendering -- a staple visualization algorithm -- on a large, multi-core platform. Historically, the Message Passing Interface (MPI) has become the de-facto standard for parallel programming and execution on modern parallel systems. As the computing industry trends towards multi-core processors, with four- and six-core chips common today and 12… more
Date: July 12, 2010
Creator: Howison, Mark; Bethel, E. Wes & Childs, Hank
Partner: UNT Libraries Government Documents Department
open access

Formation of mushrooms and lignocellulose degradation encoded in the genome sequence of Schizophyllum commune

Description: The wood degrading fungus Schizophyllum commune is a model system for mushroom development. Here, we describe the 38.5 Mb assembled genome of this basidiomycete and application of whole genome expression analysis to study the 13,210 predicted genes. Comparative analyses of the S. commune genome revealed unique wood degrading machinery and mating type loci with the highest number of reported genes. Gene expression analyses revealed that one third of the 471 identified transcription factor genes … more
Date: July 12, 2010
Creator: Ohm, Robin A.; de Jong, Jan F.; Lugones, Luis G.; Aerts, Andrea; Kothe, Erika; Stajich, Jason E. et al.
Partner: UNT Libraries Government Documents Department
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