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Analysis of Gene Targeting & Nonhomologous End-joining. Final Report

Description: Overall, we identified a number of new proteins that participate in nonhomologous end-joining and also in telomere addition to the ends of broken chromosomes. We showed that NHEJ is severely reduced in cells expressing both yeast mating-type genes and then went on to identify the NEJ1 gene that was under this control. We showed the epistasis relations among a set of mutations that impair telomere addition and we showed that there are in fact two pathways to repair broken chromosomes in the abse… more
Date: November 30, 2002
Creator: Haber, J. E.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Die Materials for Critical Applications and Increased Production Rates

Description: Die materials for aluminum die-casting need to be resistant to heat checking, and have good resistance to washout and to soldering in a fast flow of molten aluminum. To resist heat checking, die materials should have a low coefficient of thermal expansion, high thermal conductivity, high hot yield strength, good temper softening resistance, high creep strength, and adequate ductility. To resist the washout and soldering, die materials should have high hot hardness, good temper resistance, low s… more
Date: November 30, 2002
Creator: Schwam, David; Wallace, John & Birceanu, Sebastian
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Defining the Effectiveness of UV Lamps Installed in Circulating Air Ductwork

Description: Germicidal ultraviolet (UVGI) lamps have a long history of use for inactivating microbial aerosols. Most reports have focused on the control of infectious diseases, such as tuberculosis (TB), in the occupied spaces of medical facilities. Ventilation duct use of UVGI has been increasing. In-duct applications are generally more concerned with controlling environmental organisms than with controlling infections agents. This document reports the results of a project to investigate the ability of UV… more
Date: November 30, 2002
Creator: VanOsdell, Douglas & Foarde, Karin
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Modeling and Simulation of Microelectrode-Retina Interactions

Description: The goal of the retinal prosthesis project is the development of an implantable microelectrode array that can be used to supply visually-driven electrical input to cells in the retina, bypassing nonfunctional rod and cone cells, thereby restoring vision to blind individuals. This goal will be achieved through the study of the fundamentals of electrical engineering, vision research, and biomedical engineering with the aim of acquiring the knowledge needed to engineer a high-density microelectrod… more
Date: November 30, 2002
Creator: Beckerman, M
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Multi-teraflops spin dynamics studies of the magnetic structure of FeMn/Co interfaces

Description: The authors have used the power of massively parallel computers to perform first principles spin dynamics (SD) simulations of the magnetic structure of Iron-Manganese/Cobalt (FeMn/Co) interfaces. These large scale quantum mechanical simulations, involving 2016-atom super-cell models, reveal details of the orientational configuration of the magnetic moments at the interface that are unobtainable by any other means. Exchange bias, which involves the use of an antiferromagnetic (AFM) layer such as… more
Date: November 30, 2002
Creator: Canning, Andrew; Ujfalussy, B.; Schulthess, T.C.; Zhang, X.-G.; Shelton, W.A.; Nicholson, D.M.C. et al.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

IMPERMEABLE THIN Al2O3 OVERLAY FOR TBC PROTECTION FROM SULFATE AND VANADATE ATTACK IN GAS TURBINES

Description: In order to improve the hot corrosion resistance of conventional YSZ TBC system, the Al{sub 2}O{sub 3} overlay coating has been successfully produced on the surface of YSZ by the Sol-gel route. The YSZ substrates were coated with boehmite sol by dip coating process, dried to form a gel film and calcined at 1200 C to form {alpha}-Al{sub 2}O{sub 3} overlay. The microstructures of TBC and Al{sub 2}O{sub 3} overlay were examined by scanning electron microscopy (SEM). The results showed that micro-p… more
Date: November 30, 2002
Creator: Mao, Scott X.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Development of Advanced Technologies to Reduce Design, Fabrication and Construction Costs for Future Nuclear Power Plants

Description: OAK-B135 This report presents a summation of the third and final year of a three-year investigation into methods and technologies for substantially reducing the capital costs and total schedule for future nuclear plants. In addition, this is the final technical report for the three-year period of studies.
Date: November 30, 2002
Creator: DE&S, Camillo A. DiNunzio Framatome ANP; NCSU, Dr. Abhinav Gupta Assistant Professor; Laboratories, Dr. Michael Golay Professor MIT Dr. Vincent Luk Sandia National; Systems, Rich Turk Westinghouse Electric Company Nuclear; Charles Morrow, Sandia National Laboratories & Geum-Taek Jin, Korea Power Engineering Company Inc.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Review of the Technical Basis of the Hydrogen Control Limit for Operations in Hanford Tank Farms

Description: The waste in Hanford tanks generates a mixture of flammable gases and releases it into the tank headspace. The potential hazard resulting from flammable gas generation requires that controls be established to prevent ignition and halt operations if gas concentrations reach levels of concern. In cases where only hydrogen is monitored, a control limit of 6,250 ppm hydrogen has been in use at Hanford for several years. The hydrogen-based control limit is intended to conservatively represent 25% of… more
Date: November 30, 2002
Creator: Mahoney, Lenna A. & Stewart, Charles W.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Powder River Basin Coalbed Methane Development and Produced Water Management Study

Description: Coalbed methane resources throughout the entire Powder River Basin were reviewed in this analysis. The study was conducted at the township level, and as with all assessments conducted at such a broad level, readers must recognize and understand the limitations and appropriate use of the results. Raw and derived data provided in this report will not generally apply to any specific location. The coal geology in the basin is complex, which makes correlation with individual seams difficult at times… more
Date: November 30, 2002
Creator: International, Advanced Resources
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
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