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Abiotic Degradation Rates for Carbon Tetrachloride and Chloroform: Progress in FY 2010
This report documents the progress made through FY 2010 on a project initiated in FY 2006 to help address uncertainties related to the rates of hydrolysis in groundwater at the Hanford Site for carbon tetrachloride (CT) and chloroform (CF). The study also explores the possible effects of contact with minerals and sediment (i.e., heterogeneous hydrolysis) on these rates. The research was initiated to decrease the uncertainties in abiotic degradation rates of CT and chloroform CF associated with temperature and possible heterogeneous effects. After 2 years of data collection, the first evidence for heterogeneous effects was identified for hydrolysis of CT, and preliminary evidence for the effects of different mineral types on CF hydrolysis rates also was reported. The CT data showed no difference among mineral types, whereas significant differences were seen in the CF results, perhaps due to the fact that CF hydrolyzes by both neutral and base-catalyzed mechanisms whereas CT follows only the neutral hydrolysis path. In this report, we review the project objectives, organization, and technical approaches taken, update the status and results of the hydrolysis-rate experiments after 4 years of experimentation (i.e., through FY 2010), and provide a brief discussion of how these results add to scientific …
Date:
December 8, 2010
Creator:
Amonette, James E.; Jeffers, Peter M.; Qafoku, Odeta; Russell, Colleen K.; Humphrys, Daniel R.; Wietsma, Thomas W. et al.
Object Type:
Report
System:
The UNT Digital Library
AFFECTS OF MECHANICAL MILLING AND METAL OXIDE ADDITIVES ON SORPTION KINETICS OF 1:1 LiNH2/MgH2 MIXTURE
The destabilized complex hydride system composed of LiNH{sub 2}:MgH{sub 2} (1:1 molar ratio) is one of the leading candidates of hydrogen storage with a reversible hydrogen storage capacity of 8.1 wt%. A low sorption enthalpy of {approx}32 kJ/mole H{sub 2} was first predicted by Alapati et al. utilizing first principle density function theory (DFT) calculations and has been subsequently confirmed empirically by Lu et al. through differential thermal analysis (DTA). This enthalpy suggests that favorable sorption kinetics should be obtainable at temperatures in the range of 160 C to 200 C. Preliminary experiments reported in the literature indicate that sorption kinetics are substantially lower than expected in this temperature range despite favorable thermodynamics. Systematic isothermal and isobaric sorption experiments were performed using a Sievert's apparatus to form a baseline data set by which to compare kinetic results over the pressure and temperature range anticipated for use of this material as a hydrogen storage media. Various material preparation methods and compositional modifications were performed in attempts to increase the kinetics while lowering the sorption temperatures. This paper outlines the results of these systematic tests and describes a number of beneficial additions which influence kinetics as well as NH{sub 3} formation.
Date:
December 8, 2010
Creator:
Erdy, C.; Anton, D. & Gray, J.
Object Type:
Article
System:
The UNT Digital Library
Afghanistan Casualties: Military Forces and Civilians
This report collects statistics from a variety of sources on casualties sustained during Operation Enduring Freedom (OEF), which began on October 7, 2001. OEF actions took place primarily in Afghanistan; however, OEF casualties also includes American casualties in Pakistan, Uzbekistan, Guantanamo Bay (Cuba), Djibouti, Eritrea, Ethiopia, Jordan, Kenya, Kyrgyzstan, the Philippines, Seychelles, Sudan, Tajikistan, Turkey, and Yemen.
Date:
December 8, 2010
Creator:
Chesser, Susan G.
Object Type:
Report
System:
The UNT Digital Library
The Altus Times (Altus, Okla.), Vol. 112, No. 262, Ed. 1 Wednesday, December 8, 2010
Daily newspaper from Altus, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 8, 2010
Creator:
Bush, Michael
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
The Baytown Sun (Baytown, Tex.), Vol. 90, No. 244, Ed. 1 Wednesday, December 8, 2010
Daily newspaper from Baytown, Texas that includes local, state, and national news along with advertising.
Date:
December 8, 2010
Creator:
Halter Gray, Janie
Object Type:
Newspaper
System:
The Portal to Texas History
Brady Standard-Herald and Heart of Texas News (Brady, Tex.), Ed. 1 Wednesday, December 8, 2010
Weekly newspaper from Brady, Texas that includes local, state, and national news along with advertising.
Date:
December 8, 2010
Creator:
Stewart, James E.
Object Type:
Newspaper
System:
The Portal to Texas History
The Bush Tax Cuts and the Economy
The George W. Bush Administration enacted a series of tax cuts through the Economic Growth and Tax Relief Reconciliation Act of 2001 and the Jobs and Growth Tax Relief Reconciliation Act of 2003. This report examines these tax cuts within the context of the current and long-term economic environment.
Date:
December 8, 2010
Creator:
Hungerford, Thomas L.
Object Type:
Report
System:
The UNT Digital Library
Cherokeean Herald (Rusk, Tex.), Vol. 161, No. 42, Ed. 1 Wednesday, December 8, 2010
Weekly newspaper from Rusk, Texas that includes local, state and national news along with extensive advertising.
Date:
December 8, 2010
Creator:
Whitehead, Marie
Object Type:
Newspaper
System:
The Portal to Texas History
The Clifton Record (Clifton, Tex.), Vol. 116, No. 49, Ed. 1 Wednesday, December 8, 2010
Weekly newspaper from Clifton, Texas that includes local, state, and national news along with advertising.
Date:
December 8, 2010
Creator:
Phillips, Dennis
Object Type:
Newspaper
System:
The Portal to Texas History
Climate Change Modeling and Downscaling
The National Climate Assessment (NCA) Report Series summarizes regional, sectoral, and process-related workshops and discussions being held as part of the third National Climate Assessment process. This workshop focused on questions, issues, and methodological perspectives regarding the use of mathematical models for the NCA, as well as the complexities that arise when applying data and models to multiple spatial and temporal scales.
Date:
2010-12-08/2010-12-10
Creator:
U.S. Global Change Research Program
Object Type:
Report
System:
The UNT Digital Library
Comparing Vacuum and Extreme Ultraviolet Radiation for Postionization of Laser Desorbed Neutrals from Bacterial Biofilms and Organic Fullerene
Vacuum and extreme ultraviolet radiation from 8 - 24 eV generated at a synchrotron was used to postionize laser desorbed neutrals of antibiotic-treated biofilms and a modified fullerene using laser desorption postionization mass spectrometry (LDPI-MS). Results show detection of the parent ion, various fragments, and extracellular material from biofilms using LDPI-MS with both vacuum and extreme ultraviolet photons. Parent ions were observed for both cases, but extreme ultraviolet photons (16-24 eV) induced more fragmentation than vacuum ultraviolet (8-14 eV) photons.
Date:
December 8, 2010
Creator:
Gaspera, Gerald L.; Takahashi, Lynelle K.; Zhou, Jia; Ahmed, Musahid; Moored, Jerry F. & Hanley, Luke
Object Type:
Article
System:
The UNT Digital Library
Defense Management: DOD Has a Rigorous Process to Select Corrosion Prevention Projects, but Would Benefit from Clearer Guidance and Validation of Returns on Investment
A letter report issued by the Government Accountability Office with an abstract that begins "Corrosion costs DOD over $23 billion annually, affects both equipment and facilities, and threatens personnel safety. DOD has taken steps to improve its corrosion prevention and control (CPC) efforts. These efforts include reorganizing the DOD-wide Corrosion Office and instituting Corrosion Executive positions in each of the military departments. In response to the Senate Appropriations Committee Report accompanying the fiscal year 2010 DOD appropriations bill, GAO evaluated to what extent (1) the Corrosion Executives are involved in preparing CPC project proposals for submission, (2) the Corrosion Office has created a process to review and select projects for funding, and (3) the military departments have validated the return on investment (ROI) for funded projects. GAO also reviewed the process the Corrosion Office uses to determine the CPC activities that it will fund. To carry out this study, GAO observed project selection panel meetings, interviewed corrosion officials, and reviewed documents and project proposals."
Date:
December 8, 2010
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library
Defense Transportation: Additional Information Is Needed for DOD's Mobility Capabilities and Requirements Study 2016 to Fully Address All of Its Study Objectives
Correspondence issued by the Government Accountability Office with an abstract that begins "The National Military Strategy of the United States calls upon the Armed Forces to retain the ability to rapidly deploy and sustain capabilities to diverse regions, and the Quadrennial Defense Review 2010 acknowledges the fundamental importance of U.S. capability to project power. The National Security Strategy identifies taking stock of capabilities as one of many ways of reducing military risk. To identify the mobility tools needed for force projection, the Department of Defense (DOD) has conducted several studies, including the fifth and most recent--the Mobility Capabilities and Requirements Study 2016 (MCRS-16). DOD issued the report in February 2010. The intent of the MCRS-16 was to provide senior leaders with a detailed understanding of the range of mobility capabilities needed for possible future strategic environments and help them make investment decisions regarding mobility systems. Specifically, the study was to examine, among other things, how changes in the mobility system affect the outcomes of major operations and to assess the associated risks. The MCRS-16 determined that with few exceptions, the projected mobility capabilities in 2016 are sufficient to support the most demanding projected requirements. The MCRS-16 reported on specific mobility …
Date:
December 8, 2010
Creator:
United States. Government Accountability Office.
Object Type:
Text
System:
The UNT Digital Library
The Express-Star (Chickasha, Okla.), Ed. 1 Wednesday, December 8, 2010
Daily newspaper from Chickasha, Oklahoma that includes local, state, and national news along with advertising.
Date:
December 8, 2010
Creator:
Wray, Kelly
Object Type:
Newspaper
System:
The Gateway to Oklahoma History
Federal Register, Volume 75, Number 235, December 8, 2010, Pages 76251-76610
Daily publication of the U.S. Office of the Federal Register contains rules and regulations, proposed legislation and rule changes, and other notices, including "Presidential proclamations and Executive Orders, Federal agency documents having general applicability and legal effect, documents required to be published by act of Congress, and other Federal agency documents of public interest" (p. ii). Table of Contents starts on page iii.
Date:
December 8, 2010
Creator:
United States. Office of the Federal Register.
Object Type:
Journal/Magazine/Newsletter
System:
The UNT Digital Library
The Greensheet (Dallas, Tex.), Vol. 34, No. 246, Ed. 1 Wednesday, December 8, 2010
Free weekly newspaper that includes business and classified advertising.
Date:
December 8, 2010
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Greensheet (Houston, Tex.), Vol. 41, No. 532, Ed. 1 Wednesday, December 8, 2010
Free weekly newspaper that includes business and classified advertising.
Date:
December 8, 2010
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Greensheet (Houston, Tex.), Vol. 41, No. 533, Ed. 1 Wednesday, December 8, 2010
Free weekly newspaper that includes business and classified advertising.
Date:
December 8, 2010
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
The Greensheet (Houston, Tex.), Vol. 41, No. 534, Ed. 1 Wednesday, December 8, 2010
Free weekly newspaper that includes business and classified advertising.
Date:
December 8, 2010
Creator:
unknown
Object Type:
Newspaper
System:
The Portal to Texas History
Industrial Competitiveness and Technological Advancement: Debate Over Government Policy
This report discusses congressional interest in the pace of U.S. technological advancement due to its influence on U.S. economic growth, productivity, and international competitiveness. The proper role of the federal government in technology development and the competitiveness of U.S. industry continues to be a topic of congressional debate.
Date:
December 8, 2010
Creator:
Schacht, Wendy H.
Object Type:
Report
System:
The UNT Digital Library
INSTALLATION OF BUBBLERS IN THE SAVANNAH RIVER SITED DEFENSE WASTE PROCESSING FACILITY MELTER
Savannah River Remediation (SRR) LLC assumed the liquid waste contract at the Savannah River Site (SRS) in the summer of 2009. The main contractual agreement was to close 22 High Level Waste (HLW) tanks in eight years. To achieve this aggressive commitment, faster waste processing throughout the SRS liquid waste facilities will be required. Part of the approach to achieve faster waste processing is to increase the canister production rate of the Defense Waste Processing Facility (DWPF) from approximately 200 canisters filled with radioactive waste glass per year to 400 canisters per year. To reach this rate for melter throughput, four bubblers were installed in the DWPF Melter in the late summer of 2010. This effort required collaboration between SRR, SRR critical subcontractor EnergySolutions, and Savannah River Nuclear Solutions, including the Savannah River National Laboratory (SRNL). The tasks included design and fabrication of the bubblers and related equipment, testing of the bubblers for various technical issues, the actual installation of the bubblers and related equipment, and the initial successful operation of the bubblers in the DWPF Melter.
Date:
December 8, 2010
Creator:
Smith, M. & Iverson, D.
Object Type:
Article
System:
The UNT Digital Library
[Jonathan Tomhave in office]
A photograph of Jonathan Tomhave behind his desk in the UNT Multicultural Center office. It is arranged in an "L" shape and he has various stones and awards on the windowsill behind him. There is also a jacket on the back of his chair.
Date:
December 8, 2010
Creator:
University of North Texas. Multicultural Center.
Object Type:
Photograph
System:
The UNT Digital Library
[Jonathan Tomhave nameplate]
A photograph of a nameplate in the UNT Multicultural Center office. It reads "Jonathan Tomhave" and has a small plastic sleeve beneath it with Tomhave's office hours and contact information in it. Pieces of other fliers and posters are visible around the edges of the picture.
Date:
December 8, 2010
Creator:
University of North Texas. Multicultural Center.
Object Type:
Photograph
System:
The UNT Digital Library
K-12 Education: Selected Cases of Public and Private Schools That Hired or Retained Individuals with Histories of Sexual Misconduct
A letter report issued by the Government Accountability Office with an abstract that begins "Prior GAO testimonies have described cases of physical abuse of children at youth residential treatment programs and public and private schools. However, children are also vulnerable to sexual abuse. A 2004 Department of Education report estimated that millions of students are subjected to sexual misconduct by a school employee at some time between kindergarten and the twelfth grade (K-12). GAO was asked to (1) examine the circumstances surrounding cases where K-12 schools hired or retained individuals with histories of sexual misconduct and determine the factors contributing to such employment actions and (2) provide an overview of selected federal and state laws related to the employment of convicted sex offenders in K-12 schools. To identify case studies, GAO compared 2007 to 2009 data employment databases from 19 states and the District of Columbia to data in the National Sex Offender Registry. GAO also searched public records from 2000 to 2010 to identify cases in which sexual misconduct by school employees ultimately resulted in a criminal conviction. GAO ultimately selected 15 cases from 11 states for further investigation. For each case, to the extent possible, GAO reviewed court …
Date:
December 8, 2010
Creator:
United States. Government Accountability Office.
Object Type:
Report
System:
The UNT Digital Library