54 Matching Results

Search Results

Results: 1 - 24 next
open access

Ion Beam Deposition of (NbTa)2O5/SiO2 Multilayers for High-Efficiency Dielectric Gratings for High Average Power Laser Systems Operating at 800 nm Central Wavelength

Description: The ion beam deposition of (NbTa)2O5 has been investigated for realizing high reflectance multilayer stacks of high damage threshold for applications in the engineering of dielectric gratings for use at 800 nm. Deposition conditions were optimized to yield fully oxidized films as determined from x-ray photoelectron spectroscopy (XPS). The film properties were also investigated using spectroscopic ellipsometry, and spectrophotometry to determine their refractive index and thickness respectively.… more
Date: June 2, 2006
Creator: Menoni, C. S.; Patel, D.; Brizuela, F.; Rocca, J. J.; Nguyen, H. T. & Britten, J. A.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Navy Ship Propulsion Technologies: Options for Reducing Oil Use -- Background for Congress

Description: This report provides background information on options for technologies that could reduce the Navy's dependence on oil for its ships, as well as four general strategies for reducing the Navy's dependence on oil for its ships: reducing energy use on Navy ships; alternative hydrocarbon fuels; nuclear propulsion; and sail and solar power.
Date: June 2, 2006
Creator: O'Rourke, Ronald
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

A Historical and Current Perspective on Predicting Thermal Cookoff Behavior

Description: Prediction of thermal explosions using chemical kinetic models dates back nearly a century. However, it has only been within the past 25 years that kinetic models and digital computers made reliable predictions possible. Two basic approaches have been used to derive chemical kinetic models for high explosives: [1] measurement of the reaction rate of small samples by mass loss (thermogravimetric analysis, TGA), heat release (differential scanning calorimetry, DSC), or evolved gas analysis (mass … more
Date: June 2, 2006
Creator: Burnham, A K; Weese, R K; Wemhoff, A P & Maienschein, J L
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Transitive closure and metric inequality of weighted graphs:detecting protein interaction modules using cliques

Description: We study transitivity properties of edge weights in complex networks. We show that enforcing transitivity leads to a transitivity inequality which is equivalent to ultra-metric inequality. This can be used to define transitive closure on weighted undirected graphs, which can be computed using a modified Floyd-Warshall algorithm. We outline several applications and present results of detecting protein functional modules in a protein interaction network.
Date: June 2, 2006
Creator: Ding, Chris; He, Xiaofeng; Xiong, Hui; Peng, Hanchuan & Holbrook,Stephen R.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Supported Molten Metal Catalysis. A New Class of Catalysts

Description: We describe a new class of heterogeneous catalysts called supported molten metal catalysis (SMMC), in which molten metal catalysts are dispersed as nanodroplets on the surface of porous supports, allowing much larger active surface area than is possible in conventional contacting techniques for catalytic metals that are molten under reaction conditions, thus greatly enhancing their activity and potential utility. Specific examples of different types of reactions are provided to demonstrate the … more
Date: June 2, 2006
Creator: Datta, Ravindra; Singh, Ajeet; Serban, Manuela & Halasz, Istvan
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

MONITORED GEOLOGIC REPOSITORY SYSTEMS REQUIREMENTS DOCUMENT

Description: This document establishes the Monitored Geologic Repository system requirements for the U.S. Department of Energy's (DOE's) Civilian Radioactive Waste Management System (CRWMS). These requirements are based on the ''Civilian Radioactive Waste Management System Requirements Document'' (CRD) (DOE 2004a). The ''Monitored Geologic Repository Systems Requirements Document'' (MGR-RD) is developed in accordance with LP-3.3 SQ-OCRWM, ''Preparation, Review, and Approval of Office of Repository Developme… more
Date: June 2, 2006
Creator: Trebules, V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

In Situ Transmission Electron Microscopy Heating Studies of Particle Coalescence and Microstructure Evolution in Nanosized Ceramics

Description: Final report on in-situ transmission microscopy heating studies of particle coalescence and microstructure evolution in nanosized ceramics. Report includes summary of work on particle shape changes and stress effects, and novel infiltration techniques in the processing of alumina based ceramics.
Date: June 2, 2006
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

Building Science-Relevant Literacy with Technical Writing in High School

Description: By drawing on the in-class work of an on-going literacy outreach project, this paper explains how well-chosen technical writing activities can earn time in high-school science courses by enabling underperforming students (including ESL students) to learn science more effectively. We adapted basic research-based text-design and usability techniques into age-appropriate exercises and cases using the cognitive apprenticeship approach. This enabled high-school students, aided by explicit guidelines… more
Date: June 2, 2006
Creator: Girill, T R
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Global crop yield losses from recent warming

Description: Global yields of the world-s six most widely grown crops--wheat, rice, maize, soybeans, barley, sorghum--have increased since 1961. Year-to-year variations in growing season minimum temperature, maximum temperature, and precipitation explain 30% or more of the variations in yield. Since 1991, climate trends have significantly decreased yield trends in all crops but rice, leading to foregone production since 1981 of about 12 million tons per year of wheat or maize, representing an annual economi… more
Date: June 2, 2006
Creator: Lobell, D & Field, C
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Legislative Branch: FY2007 Appropriations

Description: This report is a guide to the regular appropriations bills that Congress considers each year. It is designed to supplement the information provided by the House Committee on Appropriations and Senate Subcommittee on Legislative Branch of the Senate Committee on Appropriations. It summarizes the current legislative status of the bill, its scope, major issues, funding levels, and related legislative activity.
Date: June 2, 2006
Creator: Dwyer, Paul E. & Brudnick, Ida A.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department

[UNT Cares logo, 2006]

Description: A logo for UNT Cares. It includes wings and a green eagle design. There are also three yellow outlined figures between the wings.
Date: June 2, 2006
Creator: University of North Texas. Multicultural Center.
Item Type: Refine your search to only Image
Partner: UNT Libraries Special Collections

[Students posed in front of backdrop 1]

Description: A photograph of students posed in front of a mottled backdrop. They are in different styles of clothing and one has on a t-shirt for the "Multicultural Student Association" and Laneisha Brooks is on the far right.
Date: June 2, 2006
Creator: University of North Texas. Multicultural Center.
Item Type: Refine your search to only Photograph
Partner: UNT Libraries Special Collections
Back to Top of Screen