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3-D Micro-Scale Machining Implementation
The KCP investigated milling, turning, and wire EDMing features at a micro-scale using existing equipment to find the limitations and hindrances to producing future designs.
Date:
October 20, 2008
Creator:
Boucher, Christopher L.
Object Type:
Report
System:
The UNT Digital Library
3-D Microprobe Metrology
This report documents the results of a project undertaken to develop an ultra-high-accuracy measurement capability, which is necessary to address a rising trend toward miniaturized mechanical products exhibiting dramatically reduced product tolerances. A significant improvement in measurement capability is therefore required to insure that a 4:1 ratio can be maintained between product tolerances and measurement uncertainty.
Date:
October 14, 2008
Creator:
Swallow, Kevin
Object Type:
Report
System:
The UNT Digital Library
15th Street News (Midwest City, Okla.), Vol. 38, No. 6, Ed. 1 Friday, October 3, 2008
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
October 3, 2008
Creator:
Price, Racheal
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
15th Street News (Midwest City, Okla.), Vol. 38, No. 7, Ed. 1 Friday, October 10, 2008
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
October 10, 2008
Creator:
Price, Racheal
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
15th Street News (Midwest City, Okla.), Vol. 38, No. 8, Ed. 1 Friday, October 24, 2008
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
October 24, 2008
Creator:
Price, Racheal
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
15th Street News (Midwest City, Okla.), Vol. 38, No. 9, Ed. 1 Friday, October 31, 2008
Newspaper from Rose State College in Midwest City, Oklahoma that includes national, local, and campus news along with advertising.
Date:
October 31, 2008
Creator:
Price, Racheal
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
2007 Site Environmental Report
Brookhaven National Laboratory (BNL) prepares an annual Site Environmental Report (SER) in accordance with DOE Order 231.1A, Environment, Safety and Health Reporting of the U.S. Department of Energy. The report is written to inform the public, regulators, employees, and other stakeholders of the Laboratory's environmental performance during the calendar year in review. Volume I of the SER summarizes environmental data; environmental management performance; compliance with applicable DOE, federal, state, and local regulations; and performance in restoration and surveillance monitoring programs. BNL has prepared annual SERs since 1971 and has documented nearly all of its environmental history since the Laboratory's inception in 1947. Volume II of the SER, the Groundwater Status Report, also is prepared annually to report on the status of and evaluate the performance of groundwater treatment systems at the Laboratory. Volume II includes detailed technical summaries of groundwater data and its interpretation, and is intended for internal BNL users, regulators, and other technically oriented stakeholders. A brief summary of the information contained in Volume II is included in this volume in Chapter 7, Groundwater Protection. Both reports are available in print and as downloadable files on the BNL web page at http://www.bnl.gov/ewms/ser/. An electronic version on compact disc …
Date:
October 1, 2008
Creator:
Ratel,K.
Object Type:
Report
System:
The UNT Digital Library
2008 DOT GOV Harvest Preserving Access
Presentation for the 2008 Depository Library Council Annual Meeting. This presentation outlines the history, tool building, partner activities and future work for a collaborative project between the University of North Texas, the Library of Congress, the Internet Archive, the California Digital Library, and the U.S. Government Printing Office.
Date:
October 21, 2008
Creator:
Hartman, Cathy Nelson & Phillips, Mark Edward
Object Type:
Presentation
System:
The UNT Digital Library
The 2008 Farm Bill: Major Provisions and Legislative Action
The report discusses the 2008 farm bill (H.R. 2419), covering a wide range of programs including The Food, Conservation, and Energy Act of 2008, farm credit, agricultural conservation, research, rural development, and foreign and domestic food programs, among others.
Date:
October 3, 2008
Creator:
Johnson, Renée; Becker, Geoffrey S.; Capehart, Tom; Chite, Ralph M.; Cowan, Tadlock; Gorte, Ross W. et al.
Object Type:
Report
System:
The UNT Digital Library
2008 Green Jackets reunion
Photograph of a group of Green Jackets alumni and current students posing on steps in front of Hurley Administration Building on the UNT campus.
Date:
October 2008
Creator:
unknown
Object Type:
Photograph
System:
The UNT Digital Library
[2008 Yell Like Hell winners pose with trophy, 1]
Photograph of the winners of the 2008 Yell Like Hell contest posing with a trophy. Members of the group can be seen standing in rows, facing to the right of the camera. Two young women in the front row are holding the trophy between them.
Date:
October 24, 2008
Creator:
Chaney, Ken
Object Type:
Photograph
System:
The UNT Digital Library
[2008 Yell Like Hell winners pose with trophy, 2]
Photograph of the winners of the 2008 Yell Like Hell contest posing with a trophy. One young woman (left) in the front of the group can be seen holding the trophy while the woman next to her (right) raises both arms to cheer. They are both smiling.
Date:
October 24, 2008
Creator:
Chaney, Ken
Object Type:
Photograph
System:
The UNT Digital Library
3D CFD Electrochemical and Heat Transfer Model of an Integrated-Planar Solid Oxide Electrolysis Cells
A three-dimensional computational fluid dynamics (CFD) electrochemical model has been created to model high-temperature electrolysis cell performance and steam electrolysis in a new novel integrated planar porous-tube supported solid oxide electrolysis cell (SOEC). The model is of several integrated planar cells attached to a ceramic support tube. This design is being evaluated with modeling at the Idaho National Laboratory. Mass, momentum, energy, and species conservation and transport are provided via the core features of the commercial CFD code FLUENT. A solid-oxide fuel cell (SOFC) model adds the electrochemical reactions and loss mechanisms and computation of the electric field throughout the cell. The FLUENT SOFC user-defined subroutine was modified for this work to allow for operation in the SOEC mode. Model results provide detailed profiles of temperature, Nernst potential, operating potential, activation over-potential, anode-side gas composition, cathode-side gas composition, current density and hydrogen production over a range of stack operating conditions. Mean per-cell area-specific-resistance (ASR) values decrease with increasing current density. Predicted mean outlet hydrogen and steam concentrations vary linearly with current density, as expected. Effects of variations in operating temperature, gas flow rate, cathode and anode exchange current density, and contact resistance from the base case are presented. Contour plots …
Date:
October 1, 2008
Creator:
Hawkes, Grant & O'Brien, James E.
Object Type:
Article
System:
The UNT Digital Library
Abiotic Degradation Rates for Carbon Tetrachloride: and Chloroform: Progress in FY 2008
This is a letter report summarizing work performed in FY2008 to determine the rates of carbon tetrachloride hydrolysis at temperatures close to actual groundwater temperatures. The report describes the project, the methodology, and the results obtained since the project's inception in FY2006. Measurements of hydrolysis rates in homogeneous solution have been completed for temperaturs of 70 C through 40 C, with additional data available at 30 C and 20 C. These results show no difference between the rates in deionized H2O and in filter-sterilized Hanford-Site groundwater. Moreover, the rates measured are 2-3 times slower than predicted from the open literature. Measurements of rates involving sterile suspensions of Hanford-Site sediment in Hanford-Site groundwater, however, show faster hydrolysis at temperatures below 40 C. Extrapolation of the current data available suggests a six-fold increase in rate would be expected at groundwater temperature of 16 C due to the presence of the sediment. This result translates into a 78-year half-life, rather than the 470-680 year half-life that would be predicted from rate determinations in homogeneous solution. The hydrolysis rate data at 20 C, in contrast to those at higher temperatures, are preliminary and have low statistical power. While significant (p < 0.05) differences between …
Date:
October 31, 2008
Creator:
Amonette, James E.; Jeffers, Peter M.; Qafoku, Odeta; Russell, Colleen K.; Wietsma, Thomas W. & Truex, Michael J.
Object Type:
Report
System:
The UNT Digital Library
Abstract: Air, Thermal and Water Management for PEM Fuel Cell Systems
PEM fuel cells are excellent candidates for transportation applications due to their high efficiencies. PEM fuel cell Balance of Plant (BOP) components, such as air, thermal, and water management sub-systems, can have a significant effect on the overall system performance, but have traditionally not been addressed in research and development efforts. Recognizing this, the U.S. Department of Energy and Honeywell International Inc. are funding an effort that emphasizes the integration and optimization of air, thermal and water management sub-systems. This effort is one of the major elements to assist the fuel cell system developers and original equipment manufacturers to achieve the goal of an affordable and efficient power system for transportation applications. Past work consisted of: (1) Analysis, design, and fabrication of a motor driven turbocompressor. (2) A systematic trade study to select the most promising water and thermal management systems from five different concepts (absorbent wheel humidifier, gas to gas membrane humidifier, porous metal foam humidifier, cathode recycle compressor, and water injection pump.) This presentation will discuss progress made in the research and development of air, water and thermal management sub-systems for PEM fuel cell systems in transportation applications. More specifically, the presentation will discuss: (1) Progress of the …
Date:
October 1, 2008
Creator:
Mirza, Mark K. Gee Zia
Object Type:
Article
System:
The UNT Digital Library
Accelerator/Experiment Operations - FY 2008
This Technical Memorandum (TM) summarizes the Fermilab accelerator and accelerator experiment operations for FY 2008. It is one of a series of annual publications intended to gather information in one place. In this case, the information concerns the FY 2008 Run II at the Tevatron Collider, MINOS using the Main Injector Neutrino Beam (NuMI), the MiniBooNE and SciBooNE experiments running in the Booster Neutrino Beam (BNB), and the Meson Test Beam (MTest) activities in the 120 GeV external Switchyard beam (SY120).
Date:
October 1, 2008
Creator:
Brice, Stephen J.; Buehler, M.; Casarsa, M.; Coleman, R.; Denisov, D.; Ginther, G. et al.
Object Type:
Report
System:
The UNT Digital Library
Access to Paper Currency by Visually Impaired Individuals: The American Council of the Blind v. Paulson
In May 2008, the United States Court of Appeals for the District of Columbia issued a decision in The American Council of the Blind v. Paulson. The court held that under Section 504 of the Rehabilitation Act of 1973, the Treasury Department of the U.S. government discriminates against blind and visually impaired individuals through the issuance of currency in denominations which are not readily distinguishable by touch. The Treasury Department did not file an appeal of the decision, and the case was remanded to the United States District Court for the District of Columbia to address the American Council of the Blind’s request for injunctive relief. The House Subcommittee on Domestic and International Monetary Policy, Trade, and Technology held a hearing on this issue on July 30, 2008. This report discusses the court of appeals’ decision and factors and viewpoints by affected parties that may have implications for a proposed remedy.
Date:
October 15, 2008
Creator:
Toland, Carol
Object Type:
Report
System:
The UNT Digital Library
ACCURACY OF CO2 SENSORS
Are the carbon dioxide (CO2) sensors in your demand controlled ventilation systems sufficiently accurate? The data from these sensors are used to automatically modulate minimum rates of outdoor air ventilation. The goal is to keep ventilation rates at or above design requirements while adjusting the ventilation rate with changes in occupancy in order to save energy. Studies of energy savings from demand controlled ventilation and of the relationship of indoor CO2 concentrations with health and work performance provide a strong rationale for use of indoor CO2 data to control minimum ventilation rates1-7. However, this strategy will only be effective if, in practice, the CO2 sensors have a reasonable accuracy. The objective of this study was; therefore, to determine if CO2 sensor performance, in practice, is generally acceptable or problematic. This article provides a summary of study methods and findings ? additional details are available in a paper in the proceedings of the ASHRAE IAQ?2007 Conference8.
Date:
October 1, 2008
Creator:
Fisk, William J.; Faulkner, David & Sullivan, Douglas P.
Object Type:
Article
System:
The UNT Digital Library
ACRF Instrumentation Status: New, Current, and Future - October 2008
The purpose of this report is to provide a concise but comprehensive overview of Atmospheric Radiation Measurement Climate Research Facility instrumentation status. The report is divided into the following five sections: (1) new instrumentation in the process of being acquired and deployed, (2) field campaigns, (3) existing instrumentation and progress on improvements or upgrades, (4) proposed future instrumentation, and (5) Small Business Innovation Research instrument development.
Date:
October 1, 2008
Creator:
Voyles, J. W.
Object Type:
Report
System:
The UNT Digital Library
ACRF Instrumentation Status: New, Current, and Future - September 2008
The purpose of this report is to provide a concise but comprehensive overview of Atmospheric Radiation Measurement Climate Research Facility instrumentation status. The report is divided into the following five sections: (1) new instrumentation in the process of being acquired and deployed, (2) field campaigns, (3) existing instrumentation and progress on improvements or upgrades, (4) proposed future instrumentation, and (5) Small Business Innovation Research instrument development.
Date:
October 15, 2008
Creator:
Voyles, J. W.
Object Type:
Report
System:
The UNT Digital Library
Adaptive Control Optimization of Cutting Parameters for High Quality Machining Operations based on Neural Networks and Search Algorithms
This book chapter presents an Adaptive Control with Optimization (ACO) system for optimising a multi-objective function based on material removal rate, quality loss function related to surface roughness, and cutting-tool life subjected to surface roughness specifications constraint.
Date:
October 1, 2008
Creator:
Abellan, J. V.; Romero, F.; Siller Carrillo, Héctor Rafael; Estruch, A. & Vila, C.
Object Type:
Book Chapter
System:
The UNT Digital Library
Adaptive Projection Subspace Dimension for the Thick-Restart Lanczos Method
The Thick-Restart Lanczos (TRLan) method is an effective method for solving large-scale Hermitian eigenvalue problems. However, its performance strongly depends on the dimension of the projection subspace. In this paper, we propose an objective function to quantify the effectiveness of a chosen subspace dimension, and then introduce an adaptive scheme to dynamically adjust the dimension at each restart. An open-source software package, nu-TRLan, which implements the TRLan method with this adaptive projection subspace dimension is available in the public domain. The numerical results of synthetic eigenvalue problems are presented to demonstrate that nu-TRLan achieves speedups of between 0.9 and 5.1 over the static method using a default subspace dimension. To demonstrate the effectiveness of nu-TRLan in a real application, we apply it to the electronic structure calculations of quantum dots. We show that nu-TRLan can achieve speedups of greater than 1.69 over the state-of-the-art eigensolver for this application, which is based on the Conjugate Gradient method with a powerful preconditioner.
Date:
October 1, 2008
Creator:
Yamazaki, Ichitaro; Bai, Zhaojun; Simon, Horst; Wang, Lin-Wang & Wu, K.
Object Type:
Article
System:
The UNT Digital Library
Addendum to the Closure Report for Corrective Action Unit 214: Bunkers and Storage Areas Nevada Test Site, Nevada, Revision 0
This document constitutes an addendum to the September 2006, Closure Report for Corrective Action Unit 214: Bunkers and Storage Areas as described in the document Recommendations and Justifications for Modifications for Use Restrictions Established under the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office Federal Facility Agreement and Consent Order (UR Modification document) dated February 2008. The UR Modification document was approved by NDEP on February 26, 2008. The approval of the UR Modification document constituted approval of each of the recommended UR modifications. In conformance with the UR Modification document, this addendum consists of: • This cover page that refers the reader to the UR Modification document for additional information • The cover and signature pages of the UR Modification document • The NDEP approval letter • The corresponding section of the UR Modification document This addendum provides the documentation justifying the cancellation of the URs for: • CAS 25-23-01, Contaminated Materials • CAS 25-23-19, Radioactive Material Storage These URs were established as part of Federal Facility Agreement and Consent Order (FFACO) corrective actions and were based on the presence of contaminants at concentrations greater than the action levels established at the time of the initial …
Date:
October 1, 2008
Creator:
Kidman, Lynn
Object Type:
Report
System:
The UNT Digital Library
Addendum to the Closure Report for Corrective Action Unit 262: Area 25 Septic Systems and Underground Discharge Point, Nevada Test Site, Nevada
This document constitutes an addendum to the July 2003, Closure Report for Corrective Action Unit 262: Area 25 Septic Systems and Underground Discharge Point as described in the document Recommendations and Justifications for Modifications for Use Restrictions Established under the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office Federal Facility Agreement and Consent Order (UR Modification document) dated February 2008. The UR Modification document was approved by NDEP on February 26, 2008. The approval of the UR Modification document constituted approval of each of the recommended UR modifications.
Date:
October 1, 2008
Creator:
Kidman, Lynn
Object Type:
Report
System:
The UNT Digital Library