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CHRONIC IRRADIATION OF SCOTS PINE TREES (PINUS SYLVESTRIS) IN THE CHERNOBYL EXCLUSION ZONE: DOSIMETRY AND RADIOBIOLOGICAL EFFECTS
To identify effects of chronic internal and external radiation exposure for components of terrestrial ecosystems, a comprehensive study of Scots pine trees in the Chernobyl Exclusion Zone was performed. The experimental plan included over 1,100 young trees (up to 20 years old) selected from areas with varying levels of radioactive contamination. These pine trees were planted after the 1986 Chernobyl Nuclear Power Plant accident mainly to prevent radionuclide resuspension and soil erosion. For each tree, the major morphological parameters and radioactive contamination values were identified. Cytological analyses were performed for selected trees representing all dose rate ranges. A specially developed dosimetric model capable of taking into account radiation from the incorporated radionuclides in the trees was developed for the apical meristem. The calculated dose rates for the trees in the study varied within three orders of magnitude, from close to background values in the control area (about 5 mGy y{sup -1}) to approximately 7 Gy y{sup -1} in the Red Forest area located in the immediate vicinity of the Chernobyl Nuclear Power Plant site. Dose rate/effect relationships for morphological changes and cytogenetic defects were identified and correlations for radiation effects occurring on the morphological and cellular level were established.
Date:
October 1, 2011
Creator:
Farfan, E. & Jannik, T.
Object Type:
Article
System:
The UNT Digital Library
City Mixed Beverage Comparison Summary: Third Quarter 2011
Quarterly report outlining tax revenues and remittances for alcoholic beverages, listed by city for July-September 2011. It also compares the statistics to the same period for the previous year.
Date:
October 2011
Creator:
Texas. Comptroller's Office.
Object Type:
Report
System:
The Portal to Texas History
Clean Cities Fact Sheet, October 2011
Fact sheet describing Clean Cities, a DOE program that deploys alternative and advanced fuels and vehicles to displace petroleum in the transportation sector. It includes the contact information for its 85 coalitions.
Date:
October 2011
Creator:
United States. Department of Energy. Office of Energy Efficiency and Renewable Energy.
Object Type:
Pamphlet
System:
The UNT Digital Library
Clean Cities Guide to Alternative Fuel Commercial Lawn Equipment (Brochure)
Guide explains the different types of alternative fuel commercial mowers and lists the makes and models of the ones available on the market. Turf grass is a fixture of the American landscape and the American economy. It is the nation's largest irrigated crop, covering more than 40 million acres. Legions of lawnmowers care for this expanse during the growing season-up to year-round in the warmest climates. The annual economic impact of the U.S. turf grass industry has been estimated at more than $62 billion. Lawn mowing also contributes to the nation's petroleum consumption and pollutant emissions. Mowers consume 1.2 billion gallons of gasoline annually, about 1% of U.S. motor gasoline consumption. Commercial mowing accounts for about 35% of this total and is the highest-intensity use. Large property owners and mowing companies cut lawns, sports fields, golf courses, parks, roadsides, and other grassy areas for 7 hours per day and consume 900 to 2,000 gallons of fuel annually depending on climate and length of the growing season. In addition to gasoline, commercial mowing consumes more than 100 million gallons of diesel annually. Alternative fuel mowers are one way to reduce the energy and environmental impacts of commercial lawn mowing. They can …
Date:
October 1, 2011
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Close Up Bulletin, Number 12, October 2011
Monthly newsletter of the Texas Commission on Law Enforcement describing news, events, and activities of the Commission, as well as updates about changes to laws or other information of interest to readers.
Date:
October 2011
Creator:
Texas Commission on Law Enforcement
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Cluster K Mycobacteriophages: Insights into the Evolutionary Origins of Mycobacteriophage TM4
Article on Cluster K mycobacteriophages and insights into the evolutionary origins of mycobacteriophage TM4.
Date:
October 2011
Creator:
Pope, Welkin H.; Ferreira, Christina M.; Jacobs-Sera, Deborah; Benjamin, Robert C.; Davis, Ariangela J.; DeJong, Randall J. et al.
Object Type:
Article
System:
The UNT Digital Library
Collaborative Lubricating Oil Study on Emissions: November 28, 2006 - March 31, 2011
The Collaborative Lubricating Oil Study on Emissions (CLOSE) project was a pilot investigation of how fuels and crankcase lubricants contribute to the formation of particulate matter (PM) and semi-volatile organic compounds (SVOC) in vehicle exhaust. As limited vehicles were tested, results are not representative of the whole on-road fleet. Long-term effects were not investigated. Pairs of vehicles (one normal PM emitting, one high-PM emitting) from four categories were selected: light-duty (LD) gasoline cars, medium-duty (MD) diesel trucks, heavy-duty (HD) natural-gas-fueled buses, and HD diesel buses. HD vehicles procured did not exhibit higher PM emissions, and thus were labeled high mileage (HM). Fuels evaluated were non-ethanol gasoline (E0), 10 percent ethanol (E10), conventional low-sulfur TxLED diesel, 20% biodiesel (B20), and natural gas. Temperature effects (20 degrees F, 72 degrees F) were evaluated on LD and MD vehicles. Lubricating oil vintage effects (fresh and aged) were evaluated on all vehicles. LD and MD vehicles were operated on a dynamometer over the California Unified Driving Cycle, while HD vehicles followed the Heavy Duty Urban Dynamometer Driving Schedule. Regulated and unregulated emissions were measured. Chemical markers from the unregulated emissions measurements and a tracer were utilized to estimate the lubricant contribution to PM.
Date:
October 1, 2011
Creator:
Carroll, J. N.; Khalek, I. A.; Smith, L. R.; Fujita, E. & Zielinska, B.
Object Type:
Report
System:
The UNT Digital Library
College Admissions Testing of Graduating Seniors in Texas High Schools Class of 2010
"This report examines SAT and ACT participation and performance in Texas for the class of 2010. Statewide examination results for students in Texas public schools and for students in Texas public and nonpublic schools combined are presented. Data are provided by race/ethnicity, gender, and economic status. The report also provides descriptions of the SAT and ACT examinations, along with a brief discussion of policy related to the examinations. In addition, the report discusses the use of SAT and ACT results in college admissions and the Academic Excellence Indicator System."
Date:
October 2011
Creator:
Texas Education Agency. Division of Research and Evaluation.
Object Type:
Report
System:
The Portal to Texas History
College Admissions Testing of Graduating Seniors in Texas High Schools Class of 2010, District and Campus Supplement
"This supplement to the annual Texas Education Agency report on college admissions testing of graduating seniors in Texas high schools provides data by district and campus and by district characteristic for the class of 2010."
Date:
October 2011
Creator:
Texas Education Agency. Division of Research and Evaluation.
Object Type:
Report
System:
The Portal to Texas History
Comparative Study of Vented vs. Unvented Crawlspaces
There has been a significant amount of research in the area of building energy efficiency and durability. However, well-documented quantitative information on the impact of crawlspaces on the performance of residential structures is lacking. The objective of this study was to evaluate and compare the effects of two crawlspace strategies on the whole-house performance of a pair of houses in a mixed humid climate. These houses were built with advanced envelope systems to provide energy savings of 50% or more compared to traditional 2010 new construction. One crawlspace contains insulated walls and is sealed and semi-conditioned. The other is a traditional vented crawlspace with insulation in the crawlspace ceiling. The vented (traditional) crawlspace contains fiberglass batts installed in the floor chase cavities above the crawl, while the sealed and insulated crawlspace contains foil-faced polyisocyanurate foam insulation on the interior side of the masonry walls. Various sensors to measure temperatures, heat flux through crawlspace walls and ceiling, and relative humidity were installed in the two crawlspaces. Data from these sensors have been analyzed to compare the performance of the two crawlspace designs. The analysis results indicated that the sealed and insulated crawlspace design is better than the traditional vented crawlspace in …
Date:
October 1, 2011
Creator:
Biswas, Kaushik; Christian, Jeffrey E & Gehl, Anthony C
Object Type:
Report
System:
The UNT Digital Library
Comparison of binary collision approximation and molecular dynamics for displacement cascades in GaAs.
The predictions of binary collision approximation (BCA) and molecular dynamics (MD) simulations of displacement cascades in GaAs are compared. There are three issues addressed in this work. The first is the optimal choice of the effective displacement threshold to use in the BCA calculations to obtain the best agreement with MD results. Second, the spatial correlations of point defects are compared. This is related to the level of clustering that occurs for different types of radiation. Finally, the size and structure of amorphous zones seen in the MD simulations is summarized. BCA simulations are not able to predict the formation of amorphous material.
Date:
October 1, 2011
Creator:
Foiles, Stephen Martin
Object Type:
Report
System:
The UNT Digital Library
Complex Adaptive System of Systems (CASoS) Engineering Applications. Version 1.0.
Complex Adaptive Systems of Systems, or CASoS, are vastly complex eco-socio-economic-technical systems which we must understand to design a secure future for the nation and the world. Perturbations/disruptions in CASoS have the potential for far-reaching effects due to highly-saturated interdependencies and allied vulnerabilities to cascades in associated systems. The Phoenix initiative approaches this high-impact problem space as engineers, devising interventions (problem solutions) that influence CASoS to achieve specific aspirations. CASoS embody the world's biggest problems and greatest opportunities: applications to real world problems are the driving force of our effort. We are developing engineering theory and practice together to create a discipline that is grounded in reality, extends our understanding of how CASoS behave, and allows us to better control those behaviors. Through application to real-world problems, Phoenix is evolving CASoS Engineering principles while growing a community of practice and the CASoS engineers to populate it.
Date:
October 1, 2011
Creator:
Linebarger, John Michael; Maffitt, S. Louise (New Mexico Institute of Mining and Technology, Albuquerque, NM); Glass, Robert John, Jr.; Beyeler, Walter Eugene; Brown, Theresa Jean & Ames, Arlo Leroy
Object Type:
Report
System:
The UNT Digital Library
Component evaluation testing and analysis algorithms.
The Ground-Based Monitoring R&E Component Evaluation project performs testing on the hardware components that make up Seismic and Infrasound monitoring systems. The majority of the testing is focused on the Digital Waveform Recorder (DWR), Seismic Sensor, and Infrasound Sensor. In order to guarantee consistency, traceability, and visibility into the results of the testing process, it is necessary to document the test and analysis procedures that are in place. Other reports document the testing procedures that are in place (Kromer, 2007). This document serves to provide a comprehensive overview of the analysis and the algorithms that are applied to the Component Evaluation testing. A brief summary of each test is included to provide the context for the analysis that is to be performed.
Date:
October 1, 2011
Creator:
Hart, Darren M. & Merchant, Bion John
Object Type:
Report
System:
The UNT Digital Library
Concentrating Solar Power (Fact Sheet)
Concentrating Solar Power (CSP) offers a utility-scale, firm, dispatchable renewable energy option that can help meet the nation's goal of making solar energy cost competitive with other energy sources by the end of the decade. The DOE SunShot Initiative is a collaborative national initiative to make solar energy technologies cost-competitive with other forms of energy by reducing the cost of solar energy systems by about 75% by the end of the decade. Reducing the total installed cost for utility-scale solar electricity to roughly 6 cents per kilowatt hour without subsidies will result in rapid, large-scale adoption of solar electricity across the United States. Reaching this goal will re-establish American technological leadership, improve the nation's energy security, and strengthen U.S. economic competitiveness in the global clean energy race. SunShot will work to bring down the full cost of solar - including the costs of solar cells and installation by focusing on four main pillars: (1) Technologies for solar cells and arrays that convert sunlight to energy; (2) Electronics that optimize the performance of the installation; (3) Improvements in the efficiency of solar manufacturing processes; and (4) Installation, design, and permitting for solar energy systems.
Date:
October 1, 2011
Creator:
unknown
Object Type:
Report
System:
The UNT Digital Library
Confined cooperative self-assembly and synthesis of optically and electrically active nanostructures : final LDRD report
In this project, we developed a confined cooperative self-assembly process to synthesize one-dimensional (1D) j-aggregates including nanowires and nanorods with controlled diameters and aspect ratios. The facile and versatile aqueous solution process assimilates photo-active macrocyclic building blocks inside surfactant micelles, forming stable single-crystalline high surface area nanoporous frameworks with well-defined external morphology defined by the building block packing. Characterizations using TEM, SEM, XRD, N{sub 2} and NO sorption isotherms, TGA, UV-vis spectroscopy, and fluorescence imaging and spectroscopy indicate that the j-aggregate nanostructures are monodisperse and may further assemble into hierarchical arrays with multi-modal functional pores. The nanostructures exhibit enhanced and collective optical properties over the individual chromophores. This project was a small footprint research effort which, nonetheless, produced significant progress towards both the stated goal as well as unanticipated research directions.
Date:
October 1, 2011
Creator:
Coker, Eric Nicholas; Haddad, Raid Edward (University of New Mexico, Albuquerque, NM); Fan, Hongyou; Ta, Anh (University of New Mexico, Albuquerque, NM); Bai, Feng (University of New Mexico, Albuquerque, NM); Rodriguez, Mark Andrew et al.
Object Type:
Report
System:
The UNT Digital Library
The Consortium for Advanced Simulation of Light Water Reactors
The Consortium for Advanced Simulation of Light Water Reactors (CASL) is a DOE Energy Innovation Hub for modeling and simulation of nuclear reactors. It brings together an exceptionally capable team from national labs, industry and academia that will apply existing modeling and simulation capabilities and develop advanced capabilities to create a usable environment for predictive simulation of light water reactors (LWRs). This environment, designated as the Virtual Environment for Reactor Applications (VERA), will incorporate science-based models, state-of-the-art numerical methods, modern computational science and engineering practices, and uncertainty quantification (UQ) and validation against data from operating pressurized water reactors (PWRs). It will couple state-of-the-art fuel performance, neutronics, thermal-hydraulics (T-H), and structural models with existing tools for systems and safety analysis and will be designed for implementation on both today's leadership-class computers and the advanced architecture platforms now under development by the DOE. CASL focuses on a set of challenge problems such as CRUD induced power shift and localized corrosion, grid-to-rod fretting fuel failures, pellet clad interaction, fuel assembly distortion, etc. that encompass the key phenomena limiting the performance of PWRs. It is expected that much of the capability developed will be applicable to other types of reactors. CASL's mission is to …
Date:
October 1, 2011
Creator:
Szilard, Ronaldo; Zhang, Hongbin; Kothe, Doug & Turinsky, Paul
Object Type:
Article
System:
The UNT Digital Library
Continuous prestressed concrete girder bridges. Volume 1, Literature review and preliminary designs
"The Texas Department of Transportation (TxDOT) is currently designing typical highway bridge structures as simply supported using standard precast, pretension-ed girders. TxDOT is interested in developing additional economical design alternatives for longer span bridges, through the use of the continuous precast, pretension-ed concrete bridge structures that use spliced girder technology. The objectives of this portion of the study are to evaluate the current stat-of-the-art and practice relevant to continuous precast concrete girder bridges and recommend suitable continuity connections for use with typical Texas bridge girders."
Date:
October 2011
Creator:
Mander, John B.; Parkar, Anagha S. & Hueste, Mary Beth D.
Object Type:
Report
System:
The Portal to Texas History
CONTRIBUTING TO THE DISCUSSIONS ON THE FUNDAMENTAL ASPECTS AND COMPLEXITIES OF TALSPEAK CHEMISTRY
When liquid-liquid distribution of lanthanides was monitored at Talspeak-related conditions a characteristic drop in the extraction efficiency was observed at high lactate concentrations. The lactate dependency trend also appears to be directly affected by the increasing complexity of the non-aqueous environment. Some considerations of the non-ideal solution behavior in aqueous and organic environment are presented here in an attempt to explain the observed metal partitioning trends. While the mechanism of metal ion phase transfer appears to adhere to the conventional thermodynamic struggle between HDEHP and DTPA, the diminished metal distribution and suppressed slopes for the extractant dependencies suggest further build-up in the complexity of the non-aqueous environment in Talspeak systems.
Date:
October 1, 2011
Creator:
Zalupski, Peter R. & Martin, Leigh R.
Object Type:
Article
System:
The UNT Digital Library
CR News, Volume 16, Number 4, October-December 2011
Quarterly newsletter of the Texas Department of Public Safety Crime Records Division discussing news and activities of the organization as well as other information related to crime records and other safety issue within Texas, along with a departmental directory.
Date:
October 2011
Creator:
Texas. Crime Records Division.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
CRADA Final Report for CRADA Number ORNL00-0605: Advanced Engine/Aftertreatment System R&D
Navistar and ORNL established this CRADA to develop diesel engine aftertreatment configurations and control strategies that could meet emissions regulations while maintaining or improving vehicle efficiency. The early years of the project focused on reducing the fuel penalty associated with lean NOx trap (LNT), also known as NOx adsorber catalyst regeneration and desulfation. While Navistar pursued engine-based (in-cylinder) approaches to LNT regeneration, complementary experiments at ORNL focused on in-exhaust fuel injection. ORNL developed a PC-based controller for transient electronic control of EGR valve position, intake throttle position, and actuation of fuel injectors in the exhaust system of a Navistar engine installed at Oak Ridge. Aftertreatment systems consisting of different diesel oxidation catalysts (DOCs) in conjunction with a diesel particle filter and LNT were evaluated under quasi-steady-state conditions. Hydrocarbon (HC) species were measured at multiple locations in the exhaust system with Gas chromatograph mass spectrometry (GC-MS) and Fourier transform infrared (FTIR) spectroscopy. Under full-load, rated speed conditions, injection of fuel upstream of the DOC reduced the fuel penalty for a given level of NOx reduction by 10-20%. GC-MS showed that fuel compounds were 'cracked' into smaller hydrocarbon species over the DOC, particularly light alkenes. GC-MS analysis of HC species entering and …
Date:
October 1, 2011
Creator:
Pihl, Josh A; West, Brian H; Toops, Todd J; Adelman, Brad & Derybowski, Edward
Object Type:
Report
System:
The UNT Digital Library
Credit Union Department Newsletter, Number 10-11, October 2011
Newsletter of the Texas Credit Union Department containing departmental news and announcements, deadlines, and other information of importance to credit unions.
Date:
October 2011
Creator:
Texas. Credit Union Department.
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History
Crystal Structure of Thrombin in Complex with S-Variegin: Insights of a Novel Mechanism of Inhibition and Design of Tunable Thrombin Inhibitors
Article on the crystal structure of thrombin in complex with s-variegin and insights of a novel mechanism of inhibition and design of tunable thrombin inhibitors.
Date:
October 2011
Creator:
Koh, Cho Yeow; Kumar, Sundramurthy; Kazimirova, Maria; Nuttall, Patricia A.; Radhakrishnan, Uvaraj P.; Kim, Seongcheol et al.
Object Type:
Article
System:
The UNT Digital Library
Culture Change in Texas Nursing Homes
This pamphlet provides information on the culture change program in nursing homes.
Date:
October 2011
Creator:
Culture Change Initiative
Object Type:
Pamphlet
System:
The Portal to Texas History
The Dallas Journal, Volume 57, October 2011
Annual publication containing genealogical information about families in Dallas, Texas and the surrounding area, including family histories, lists of records (births, deaths, registration, etc.), correspondence, and other documentation. Name index begins on page 109.
Date:
October 2011
Creator:
Dallas Genealogical Society
Object Type:
Journal/Magazine/Newsletter
System:
The Portal to Texas History