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[News release: Corporate Plantation!]

Description: Press release from the Junior Black Academy of Arts and Letters discussing the production of 'The Corporate Plantation' produced by the Blacken Blues Theatre in June 1999.
Date: May 2, 1999
Creator: Junior Black Academy of Arts and Letters
Item Type: Refine your search to only Text
Partner: UNT Libraries Special Collections
open access

Direct Simulation of Ion Beam Induced Stressing and Amorphization of Silicon

Description: Using molecular dynamics (MD) simulation, the authors investigate the mechanical response of silicon to high dose ion-irradiation. The authors employ a realistic model to directly simulate ion beam induced amorphization. Structural properties of the amorphized sample are compared with experimental data and results of other simulation studies. The authors find the behavior of the irradiated material is related to the rate at which it can relax. Depending upon the ability to deform, the authors o… more
Date: May 2, 1999
Creator: Beardmore, K.M. & Gronbech-Jensen, N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Application of alternating current impedance to fuel cell modeling

Description: AC impedance has provided a useful diagnostic tool in the Los Alamos polymer electrolyte fuel cell (PEFC) program. The author reviews the techniques he has used in ac impedance modeling. These techniques include equation implementation, model simplification and verification, least squares fitting, application of two-dimensional Laplace equation solvers handling complex interfacial boundary conditions, and interpretation of impedance features. The separate features of the complete electrode mode… more
Date: May 2, 1999
Creator: Springer, Thomas E.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Ethanol Production from Glucose and Xylose by Immobilized <i>Zymomonas mobilis</i> CP4(pZB5)

Description: Fermentation of glucose-xylose mixtures to ethanol was investigated in batch and continuous experiments using immobilized recombinant <i>Zymomonas mobilis</i> CP4(pZB5). This microorganism was immobilized by entrapment in k-carrageenan beads having a diameter of 1.5-2.5 mm. Batch experiments showed that the immobilized cells co-fermented glucose and xylose to ethanol and that the presence of glucose improved the xylose utilization rate. Batch fermentation of rice straw hydrolyzate containing 76… more
Date: May 2, 1999
Creator: Blanco, M.; Davison, B. H.; Krishnan, M. S.; Nghiem, N. P. & Shattuck, C. K.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Predicting Low Energy Dopant Implant Profiles in Semiconductors using Molecular Dynamics

Description: The authors present a highly efficient molecular dynamics scheme for calculating dopant density profiles in group-IV alloy, and III-V zinc blende structure materials. Their scheme incorporates several necessary methods for reducing computational overhead, plus a rare event algorithm to give statistical accuracy over several orders of magnitude change in the dopant concentration. The code uses a molecular dynamics (MD) model to describe ion-target interactions. Atomic interactions are described … more
Date: May 2, 1999
Creator: Beardmore, K.M. & Gronbech-Jensen, N.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

A Silicon Ingot Lifetime Tester for Large Crystals

Description: A lifetime-measurement instrument has been developed to characterize large silicon ingots prior to wafering and polishing. It uses the direct-current photoconductance decay method and localized probing and illumination to achieve the necessary sensitivity on low-resistivity, large samples. A 940-nm, 60-Wp, pulsed-laser diode beam (250-ms width, &lt;100-ns cut-off) lights the as-cropped silicon surface between two ohmic-contact probes. A user-friendly graphical interface supports data acquisitio… more
Date: May 2, 1999
Creator: Wang, T. H.; Ciszek, T. F.; Landry, M.; Matthaeus, A. & Mihalik, G.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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