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401
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382
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2,399
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[24-Hour FilmFeast Photograph UNTA_AR0797-138-004-0081]
Photograph taken at a 24-Hour FilmFeast event featuring Malik Yoba, sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
March 1, 2008
Creator:
Smith, David L., III
Object Type:
Photograph
System:
The UNT Digital Library
[24-Hour FilmFeast Photograph UNTA_AR0797-138-004-0082]
Photograph taken at a 24-Hour FilmFeast event featuring Malik Yoba, sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
March 1, 2008
Creator:
Smith, David L., III
Object Type:
Photograph
System:
The UNT Digital Library
[24-Hour FilmFeast Photograph UNTA_AR0797-138-004-0083]
Photograph taken at a 24-Hour FilmFeast event featuring Malik Yoba, sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
March 1, 2008
Creator:
Smith, David L., III
Object Type:
Photograph
System:
The UNT Digital Library
[24-Hour FilmFeast Photograph UNTA_AR0797-138-004-0084]
Photograph taken at a 24-Hour FilmFeast event featuring Malik Yoba, sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
March 1, 2008
Creator:
Smith, David L., III
Object Type:
Photograph
System:
The UNT Digital Library
[24-Hour FilmFeast Photograph UNTA_AR0797-138-004-0085]
Photograph taken at a 24-Hour FilmFeast event featuring Malik Yoba, sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
March 1, 2008
Creator:
Smith, David L., III
Object Type:
Photograph
System:
The UNT Digital Library
[24-Hour FilmFeast Photograph UNTA_AR0797-138-004-0086]
Photograph taken at a 24-Hour FilmFeast event featuring Malik Yoba, sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
March 1, 2008
Creator:
Smith, David L., III
Object Type:
Photograph
System:
The UNT Digital Library
[24-Hour FilmFeast Photograph UNTA_AR0797-138-004-0087]
Photograph taken at a 24-Hour FilmFeast event featuring Malik Yoba, sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
March 1, 2008
Creator:
Smith, David L., III
Object Type:
Photograph
System:
The UNT Digital Library
[24-Hour FilmFeast Photograph UNTA_AR0797-138-004-0088]
Photograph taken at a 24-Hour FilmFeast event featuring Malik Yoba, sponsored by The Black Academy of Arts and Letters in Dallas, Texas.
Date:
March 1, 2008
Creator:
Smith, David L., III
Object Type:
Photograph
System:
The UNT Digital Library
24, Lost, and Six Feet Under: Post-traumatic television in the post-9/11 era.
This study sought to determine if and how television texts produced since September 11, 2001, reflect and address cultural concerns by analyzing patterns in their theme and narrative style. Three American television serials were examined as case studies. Each text addressed a common cluster of contemporary issues such as trauma, death, and loss.
Date:
May 2008
Creator:
Anderson, Tonya
Object Type:
Thesis or Dissertation
System:
The UNT Digital Library
A 30 MW, 200 MHz Inductive Output Tube for RF Accelerators
This program investigated development of a multiple beam inductive output tube (IOT) to produce 30 MW pulses at 200 MHz. The program was successful in demonstrating feasibility of developing the source to achieve the desired power in microsecond pulses with 70% efficiency. The predicted gain of the device is 24 dB. Consequently, a 200 kW driver would be required for the RF input. Estimated cost of this driver is approximately $1.25 M. Given the estimated development cost of the IOT of approximately $750K and the requirements for a test set that would significantly increase the cost, it was determined that development could not be achieved within the funding constraints of a Phase II program.
Date:
June 19, 2008
Creator:
Ives, R. Lawrence & Read, Michael
Object Type:
Report
System:
The UNT Digital Library
41. DISCOVERY, SEARCH, AND COMMUNICATION OF TEXTUAL KNOWLEDGE RESOURCES IN DISTRIBUTED SYSTEMS a. Discovering and Utilizing Knowledge Sources for Metasearch Knowledge Systems
Advanced Natural Language Processing Tools for Web Information Retrieval, Content Analysis, and Synthesis. The goal of this SBIR was to implement and evaluate several advanced Natural Language Processing (NLP) tools and techniques to enhance the precision and relevance of search results by analyzing and augmenting search queries and by helping to organize the search output obtained from heterogeneous databases and web pages containing textual information of interest to DOE and the scientific-technical user communities in general. The SBIR investigated 1) the incorporation of spelling checkers in search applications, 2) identification of significant phrases and concepts using a combination of linguistic and statistical techniques, and 3) enhancement of the query interface and search retrieval results through the use of semantic resources, such as thesauri. A search program with a flexible query interface was developed to search reference databases with the objective of enhancing search results from web queries or queries of specialized search systems such as DOE's Information Bridge. The DOE ETDE/INIS Joint Thesaurus was processed to create a searchable database. Term frequencies and term co-occurrences were used to enhance the web information retrieval by providing algorithmically-derived objective criteria to organize relevant documents into clusters containing significant terms. A thesaurus provides …
Date:
March 18, 2008
Creator:
Zamora, Antonio
Object Type:
Report
System:
The UNT Digital Library
S-102 Transfer Pump Restriction Modeling Results
It was determined that a radioactive waste leak in the Hanford S Farm in the vicinity of the S-102 retrieval pump discharge occurred because of over-pressurization and failure of the S-102 dilution water supply hose while operating the retrieval pump in reverse with an obstructed suction cavity and an unobstructed flow path to the dilution water supply hose. This report describes efforts to identify plausible scenarios for the waste leak to occur.
Date:
March 27, 2008
Creator:
Wells, Beric E.; Johnson, Kenneth I.; Rector, David R. & Trent, Donald S.
Object Type:
Report
System:
The UNT Digital Library
200-BP-1 Prototype Hanford Barrier Annual Monitoring Report for Fiscal Years 2005 Through 2007
A prototype Hanford barrier was deployed over the 216-B-57 Crib at the Hanford Site in 1994 to prevent percolation through the underlying waste and to minimize spreading of buried contaminants. This barrier is being monitored to evaluate physical and hydrologic performance at the field scale. This report summarizes data collected during the period FY 2005 through FY 2007. In FY 2007, monitoring of the prototype Hanford barrier focused on barrier stability, vegetative cover, evidence of plant and animal intrusion, and the main components of the water balance, including precipitation, runoff, storage, drainage, and deep percolation. Owing to a hiatus in funding in FY 2005 through 2006, data collected were limited to automated measurements of the water-balance components. For the reporting period (October 2004 through September 2007) precipitation amount and distribution were close to normal. The cumulative amount of water received from October 1994 through September 2007 was 3043.45 mm on the northern half of the barrier, which is the formerly irrigated treatment, and 2370.58 mm on the southern, non-irrigated treatments. Water storage continued to show a cyclic pattern, increasing in the winter and declining in the spring and summer to a lower limit of around 100 mm in response to …
Date:
February 1, 2008
Creator:
Ward, Andy L.; Link, Steven O.; Strickland, Christopher E.; Draper, Kathryn E. & Clayton, Ray E.
Object Type:
Report
System:
The UNT Digital Library
219-S CORROSION STUDY
A minor leak was detected in a drain line for Hood 2B located in the 222-S Laboratory. The line transfers radioactive waste, spent analytical standards, and chemicals used in various analytical procedures. Details are in the report provided by David Comstock, 2B NDE June 2008, work package LAB-WO-07-2012. Including the noted leak, the 222-S Laboratory has experienced two drain line leaks in approximately the last two years of operation. As a consequence, CH2M HILL Hanford Group, Inc. (CH2M HILL) requested the support of ChemMet, Ltd., PC (ChemMet) at the Hanford Site 222-S Laboratory. The corrosion expertise from ChemMet was required prior to preparation of a compatibility assessment for the 222-S Laboratory waste transfer system to assure the expected life of the piping system is extended as much as practicable. The system includes piping within the 222-S Laboratory and the 219-S Waste Storage and Transfer Facility and Operations Process. The ChemMet support was required for an assessment by 222-S staff to analyze what improvements to operational activities may be implemented to extend the tank/piping system life. This assessment will include a summary of the various material types, age, and locations throughout the facility. The assessment will also include a discussion of …
Date:
December 1, 2008
Creator:
Divine, James R. & Parsons, G. L.
Object Type:
Report
System:
The UNT Digital Library
242-16H 2H EVAPORATOR POT SAMPLING FINAL REPORT
Due to the materials that are processed through 2H Evaporator, scale is constantly being deposited on the surfaces of the evaporator pot. In order to meet the requirements of the Nuclear Criticality Safety Analysis/Evaluation (NCSA/NCSE) for 2H Evaporator, inspections of the pot are performed to determine the extent of scaling. Once the volume of scale reaches a certain threshold, the pot must be chemically cleaned to remove the scale. Prior to cleaning the pot, samples of the scale are obtained to determine the concentration of uranium and plutonium and also to provide information to assist with pot cleaning. Savannah River National Laboratory (SRNL) was requested by Liquid Waste Organization (LWO) Engineering to obtain these samples from two locations within the evaporator. Past experience has proven the difficulty of successfully obtaining solids samples from the 2H Evaporator pot. To mitigate this risk, a total of four samplers were designed and fabricated to ensure that two samples could be obtained. Samples had previously been obtained from the cone surface directly below the vertical access riser using a custom scraping tool. This tool was fabricated and deployed successfully. A second scraper was designed to obtain sample from the nearby vertical thermowell and a …
Date:
June 11, 2008
Creator:
Krementz, D & William Cheng, W
Object Type:
Report
System:
The UNT Digital Library
275 C Downhole Microcomputer System
An HC11 controller IC and along with serial SRAM and ROM support ICs chip set were developed to support a data acquisition and control for extreme temperature/harsh environment conditions greater than 275 C. The 68HC11 microprocessor is widely used in well logging tools for control, data acquisition, and signal processing applications and was the logical choice for a downhole controller. This extreme temperature version of the 68HC11 enables new high temperature designs and additionally allows 68HC11-based well logging tools and MWD tools to be upgraded for high temperature operation in deep gas reservoirs, The microcomputer chip consists of the microprocessor ALU, a small boot ROM, 4 kbyte data RAM, counter/timer unit, serial peripheral interface (SPI), asynchronous serial interface (SCI), and the A, B, C, and D parallel ports. The chip is code compatible with the single chip mode commercial 68HC11 except for the absence of the analog to digital converter system. To avoid mask programmed internal ROM, a boot program is used to load the microcomputer program from an external mask SPI ROM. A SPI RAM IC completes the chip set and allows data RAM to be added in 4 kbyte increments. The HC11 controller IC chip set is implemented …
Date:
August 31, 2008
Creator:
Hutchens, Chris & Soo, Hooi Miin
Object Type:
Report
System:
The UNT Digital Library
275 C Downhole Switched-Mode Power Supply
A vee-square (V2) control based controller IC is developed for a switch mode power supply capable of operating at extreme temperature/harsh environment conditions. A buck type regulator with silicon carbide power junction field effect transistors (JFET) as power devices is used to analyze the performance of controller. Special emphases are made on the analog sub-blocks--voltage reference, operational transconductance amplifier and comparator as individual building blocks. Transformer coupled gate drives and high temperature operable magnetic cores and capacitors are identified and tested for use in the design. Conventional ceramic chip packaging of ICs combined with lead carrier type mounting of passive filter components is introduced for hybrid packaging of the complete product. The developed SMPS is anticipated to support the operation of down-hole microcontrollers and other electronics devices that require low/medium power filtered dc inputs over an operating temperature of 275 C.
Date:
August 31, 2008
Creator:
Hutchens, Chris & Madhuravasal, Vijay
Object Type:
Report
System:
The UNT Digital Library
300 Area Integrated Field-Scale Subsurface Research Challenge (IFRC) Field Site Management Plan
Pacific Northwest National Laboratory (PNNL) has established the 300 Area Integrated Field-Scale Subsurface Research Challenge (300 Area IFRC) on the Hanford Site in southeastern Washington State for the U.S. Department of Energy’s (DOE) Office of Biological and Environmental Research (BER) within the Office of Science. The project is funded by the Environmental Remediation Sciences Division (ERSD). The purpose of the project is to conduct research at the 300 IFRC to investigate multi-scale mass transfer processes associated with a subsurface uranium plume impacting both the vadose zone and groundwater. The management approach for the 300 Area IFRC requires that a Field Site Management Plan be developed. This is an update of the plan to reflect the installation of the well network and other changes.
Date:
December 31, 2008
Creator:
Freshley, Mark D.
Object Type:
Report
System:
The UNT Digital Library
300 Area Treatability Test: Laboratory Development of Polyphosphate Remediation Technology for In Situ Treatment of Uranium Contamination in the Vadose Zone and Capillary Fringe
This report presents results from bench-scale treatability studies conducted under site-specific conditions to optimize the polyphosphate amendment for implementation of a field-scale technology demonstration to stabilize uranium within the 300 Area vadose and smear zones of the Hanford Site. The general treatability testing approach consisted of conducting studies with site sediment and under site conditions, to develop an effective chemical formulation and infiltration approach for the polyphosphate amendment under site conditions. Laboratory-scale dynamic column tests were used to 1) quantify the retardation of polyphosphate and its degradation products as a function of water content, 2) determine the rate of polyphosphate degradation under unsaturated conditions, 3) develop an understanding of the mechanism of autunite formation via the reaction of solid phase calcite-bound uranium and aqueous polyphosphate remediation technology, 4) develop an understanding of the transformation mechanism, the identity of secondary phases, and the kinetics of the reaction between uranyl-carbonate and -silicate minerals with the polyphosphate remedy under solubility-limiting conditions, and 5) quantify the extent and rate of uranium released and immobilized based on the infiltration rate of the polyphosphate remedy and the effect of and periodic wet-dry cycling on the efficacy of polyphosphate remediation for uranium in the vadose zone and …
Date:
September 30, 2008
Creator:
Wellman, Dawn M.; Pierce, Eric M.; Bacon, Diana H.; Oostrom, Martinus; Gunderson, Katie M.; Webb, Samuel M. et al.
Object Type:
Report
System:
The UNT Digital Library
300 Area VOC Program Slug Test Characterization Results for Selected Test/Depth Intervals for Wells 399-2-5, 399-3-22, and 399-4-14
Multiple, stress-level slug tests were performed at selected test/depth intervals within wells 399-2-5, 399-3-22, and 399-4-14 as part of the 300 Area volatile organic compound characterization program at the Hanford Site in Washington State. The temporary test screen lengths were characterized as the boreholes were advanced to their final drill depths and before their completion as monitor-well facilities. Following well completion, slug tests were performed in the final, completed well-screen sections. The objectives of the slug tests were to provide the vertical distribution of hydraulic conductivity with depth at these locations and to support selection of the final well screen-depth interval for each of these monitor-well facilities.
Date:
March 1, 2008
Creator:
Newcomer, Darrell R.
Object Type:
Report
System:
The UNT Digital Library
L-325 Sagebrush Habitat Mitigation Project: FY2008 Compensation Area Monitoring Report
This document provides a review and status of activities conducted in support of the Fluor Daniel Hanford Company (Fluor) Mitigation Action Plan (MAP) for Project L-325, Electrical Utility Upgrades. It includes time-zero monitoring results for planting activities conducted in January 2008, annual survival monitoring for all planting years (2007 and 2008), and recommendations for the successful completion of DOE habitat mitigation commitments for this project.
Date:
September 30, 2008
Creator:
Durham, Robin E. & Sackschewsky, Michael R.
Object Type:
Report
System:
The UNT Digital Library
527 Groups and Campaign Activity: Analysis Under Campaign Finance and Tax Laws
This report focuses on the controversy surrounding 527 groups in terms of their increased campaign-related activity and their regulation by the federal government. The report describes the origins of the contention and how groups that may not be necessarily "political committees" under FECA (Federal Election Campaign Act) guidelines are still eligible for beneficial tax deductions. This report also examines the extent to which FECA regulates such organizations.
Date:
June 12, 2008
Creator:
Whitaker, L. Paige & Lunder, Erika
Object Type:
Report
System:
The UNT Digital Library
527 Organizations and Campaign Activity: Timing of Reporting Requirements under Tax and Campaign Finance Laws
This report compares the timing of election activity reporting requirements under the Internal Revenue Code (IRC) and Federal Election Campaign Act (FECA), and discusses H.R. 1204, which would amend the timing of the IRC’s reporting requirements.
Date:
July 25, 2008
Creator:
Lunder, Erika & Whitaker, L. Paige
Object Type:
Report
System:
The UNT Digital Library
805 MHz Beta = 0.47 Elliptical Accelerating Structure R & D
A 6-cell 805 MHz superconducting cavity for acceleration in the velocity range of about 0.4 to 0.53 times the speed of light was designed. After single-cell prototyping, three 6-cell niobium cavities were fabricated. In vertical RF tests of the 6-cell cavities, the measured quality factors (Q{sub 0}) were between 7 {center_dot} 10{sup 9} and 1.4 {center_dot} 10{sup 10} at the design field (accelerating gradient of 8 to 10 MV/m). A rectangular cryomodule was designed to house 4 cavities per cryomodule. The 4-cavity cryomodule could be used for acceleration of ions in a linear accelerator, with focusing elements between the cryomodules. A prototype cryomodule was fabricated to test 2 cavities under realistic operating conditions. Two of the 6-cell cavities were equipped with helium tanks, tuners, and input coupler and installed into the cryomodule. The prototype cryomodule was used to verify alignment, electromagnetic performance, frequency tuning, cryogenic performance, low-level RF control, and control of microphonics.
Date:
September 22, 2008
Creator:
Bricker, S.; Compton, C.; Hartung, W.; Johnson, M.; Marti, F.; Popierlarski, J. et al.
Object Type:
Report
System:
The UNT Digital Library