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Canada Geese at the Hanford Site – Trends in Reproductive Success, Migration Patterns, and Contaminant Concentrations (open access)

Canada Geese at the Hanford Site – Trends in Reproductive Success, Migration Patterns, and Contaminant Concentrations

Pacific Northwest National Laboratory (PNNL) has conducted several studies for the U.S. Department of Energy (DOE) to evaluate the status and condition of Canada geese on the Hanford Reach of the Columbia River. This report summarizes results of studies of Canada geese (Branta canadensis moffitti) at the Hanford Site dating back to the 1950s. Results include information on the nesting (reproductive) success of Canada geese using the Hanford Reach, review of the local and regional migration of this species using data from bird banding studies, and summary data describing monitoring and investigations of the accumulation of Hanford-derived and environmental contaminants by resident goose populations.
Date: May 25, 2010
Creator: Simmons, Mary Ann; Poston, Ted M.; Tiller, Brett L.; Stegen, Amanda; Hand, Kristine D. & Brandenberger, Jill M.
Object Type: Report
System: The UNT Digital Library
Evaluation of the Initial Isothermal Physics Measurements at the Fast Flux Test Facility, a Prototypic Liquid Metal Fast Breeder Reactor (open access)

Evaluation of the Initial Isothermal Physics Measurements at the Fast Flux Test Facility, a Prototypic Liquid Metal Fast Breeder Reactor

The Fast Flux Test Facility (FFTF) was a 400-MWt, sodium-cooled, low-pressure, high-temperature, fast-neutron flux, nuclear fission reactor plant designed for the irradiation testing of nuclear reactor fuels and materials for the development of liquid metal fast breeder reactors (LMFBRs). The FFTF was fueled with plutonium-uranium mixed oxide (MOX) and reflected by Inconel-600. Westinghouse Hanford Company operated the FFTF as part of the Hanford Engineering Development Laboratory (HEDL) for the U.S. Department of Energy on the Hanford Site near Richland, Washington. Although the FFTF was a testing facility not specifically designed to breed fuel or produce electricity, it did provide valuable information for LMFBR projects and base technology programs in the areas of plant system and component design, component fabrication, prototype testing, and site construction. The major objectives of the FFTF were to provide a strong, disciplined engineering base for the LMFBR program, provide fast flux testing for other U.S. programs, and contribute to the development of a viable self-sustaining competitive U.S. LMFBR industry. During its ten years of operation, the FFTF acted as a national research facility to test advanced nuclear fuels, materials, components, systems, nuclear power plant operating and maintenance procedures, and active and passive reactor safety technologies; it …
Date: March 1, 2010
Creator: Bess, John D.
Object Type: Report
System: The UNT Digital Library
Discovery of Resources and Conflict in the Interstate System, 1816-2001 (open access)

Discovery of Resources and Conflict in the Interstate System, 1816-2001

This study tests a theory detailing the increased likelihood of conflict following an initial resource discovery in the discovering nation and its region. A survey of prior literature shows a multitude of prior research concerning resources and nations' willingness to initiate conflict over those resources, but this prior research lacks any study concerning the effects of the discovery of resources on interstate conflict. The theory discusses the increased likelihood of conflict in the discovering nation as both target and initiator. It further looks at the increased chance of conflict in the discoverer's region due to security dilemmas and proxy wars. The results show strong support for the theory, suggesting nations making new resource discoveries must take extra care to avoid conflict.
Date: May 2010
Creator: Clark, Bradley
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Comparison of Heteranthera Dubia (Jacq.) MacM.-associated Macroinvertebrates Between Georgraphical Regions in the United States (open access)

Comparison of Heteranthera Dubia (Jacq.) MacM.-associated Macroinvertebrates Between Georgraphical Regions in the United States

Macroinvertebrates associated with the aquatic plant, water stargrass (Heteranthera dubia), were sampled from 12 waterbodies in four regions of the United States from June to August 2005. Taxa richness, evenness, and diversity were lowest in the Lower Midwest (LMW) region, and higher in Northern sites, especially the Upper Midwest (UMW), and Northeast (NE). While relative abundance varied from site to site and region to region, utilization of the plant by functional groups remained fairly constant. Collector-gatherers consistently comprised the largest portion of invertebrates sampled. The shredder/ herbivore functional group comprised an average of 17 % of total groups. Through an exhaustive literature review, it was found that shredder/ herbivores of water stargrass have not been reported in the literature. Because of this, the herbivore group was analyzed separately and consisted of 2,383 specimens representing 23 species. The most common groups were Rhopalosiphum sp., Nectopsyche spp. and chironomids. No differences were found in herbivore diversity or evenness between sampling regions, but species richness was significantly different.
Date: May 2010
Creator: Harms, Nathan Earl
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Annual Energy Outlook 2010: With Projections to 2035 (open access)

Annual Energy Outlook 2010: With Projections to 2035

The Annual Energy Outlook 2010 (AEO2010), prepared by the U.S. Energy Information Administration (EIA), presents long-term projections of energy supply, demand, and prices through 2035, based on results from EIA's National Energy Modeling System (NEMS).
Date: April 2010
Creator: United States. Energy Information Administration.
Object Type: Report
System: The UNT Digital Library
Technical Support Document: 50% Energy Savings for Quick-Service Restaurants (open access)

Technical Support Document: 50% Energy Savings for Quick-Service Restaurants

Document describing PNNL's project to develop a package of energy efficiency measures that demonstrate the feasibility of achieving a 50% energy savings for quick-service restaurants with a simple payback of 5 years or less.
Date: September 30, 2010
Creator: Zhang, Jian; Schrock, D. W.; Fisher, D. R.; Livchak, A.; Zabrowski, D. A.; Athalye, Rahul A. et al.
Object Type: Report
System: The UNT Digital Library
Influence of Incision Location on Transmitter Loss, Healing, Incision Lengths, Suture Retention, and Growth of Juvenile Chinook Salmon (open access)

Influence of Incision Location on Transmitter Loss, Healing, Incision Lengths, Suture Retention, and Growth of Juvenile Chinook Salmon

In this study, conducted by Pacific Northwest National Laboratory for the U.S. Army Corps of Engineers, Portland District, we measured differences in survival and growth, incision openness, transmitter loss, wound healing, and erythema among abdominal incisions on the linea alba, lateral and parallel to the linea alba (muscle-cutting), and following the underlying muscle fibers (muscle-sparing). A total of 936 juvenile Chinook salmon were implanted with both Juvenile Salmon Acoustic Tracking System transmitters (0.43 g dry) and passive integrated transponder tags. Fish were held at 12°C (n = 468) or 20°C (n = 468) and examined once weekly over 98 days. We found survival and growth did not differ among incision groups or between temperature treatment groups. Incisions on the linea alba had less openness than muscle-cutting and muscle-sparing incisions during the first 14 days when fish were held at 12°C or 20°C. Transmitter loss was not different among incision locations by day 28 when fish were held at 12°C or 20°C. However, incisions on the linea alba had greater transmitter loss than muscle-cutting and muscle-sparing incisions by day 98 at 12°C. Results for wound closure and erythema differed among temperature groups. Results from our study will be used to improve …
Date: May 11, 2010
Creator: Panther, Jennifer L.; Brown, Richard S.; Gaulke, Greggory L.; Woodley, Christa M. & Deters, Katherine A.
Object Type: Report
System: The UNT Digital Library
Modeling Studies on the Transport of Benzene and H2S in CO2-Water Systems (open access)

Modeling Studies on the Transport of Benzene and H2S in CO2-Water Systems

In this study, reactive transport simulations were used to assess the mobilization and transport of organics with supercritical CO{sub 2} (SCC), and the co-injection and transport of H{sub 2}S with SCC. These processes were evaluated at conditions of typical storage reservoirs, and for cases of hypothetical leakage from a reservoir to an overlying shallower fresh water aquifer. Modeling capabilities were developed to allow the simulation of multiphase flow and transport of H{sub 2}O, CO{sub 2}, H{sub 2}S, as well as specific organic compounds (benzene), coupled with multicomponent geochemical reaction and transport. This included the development of a new simulator, TMVOC-REACT, starting from existing modules of the TOUGH2 family of codes. This work also included an extensive literature review, calculation, and testing of phase-partitioning properties for mixtures of the phases considered. The reactive transport simulations presented in this report are primarily intended to illustrate the capabilities of the new simulator. They are also intended to help evaluate and understand various processes at play, in a more qualitative than quantitative manner, and only for hypothetical scenarios. Therefore, model results are not intended as realistic assessments of groundwater quality changes for specific locations, and they certainly do not provide an exhaustive evaluation of …
Date: November 5, 2010
Creator: Zheng, L.; Spycher, N.; Xu, T.; Apps, J.; Kharaka, Y. & Birkholzer, J.T.
Object Type: Report
System: The UNT Digital Library
Facility Energy Decision System (FEDS) Assessment Report for US Army Garrison, Japan - Honshu Installations (open access)

Facility Energy Decision System (FEDS) Assessment Report for US Army Garrison, Japan - Honshu Installations

This report documents an assessment was performed by a team of engineers from Pacific Northwest National Laboratory (PNNL) under contract to the Installation Management Command (IMCOM) Pacific Region Office (PARO). The effort used the Facility Energy Decision System (FEDS) model to determine how energy is consumed at five U.S. Army Garrison-Japan (USAG-J) installations in the Honshu area, identify the most cost-effective energy retrofit measures, and calculate the potential energy and cost savings.
Date: March 9, 2010
Creator: Kora, Angela R.; Brown, Daryl R. & Dixon, Douglas R.
Object Type: Report
System: The UNT Digital Library
Computational Design and Prototype Evaluation of Aluminide-Strengthened Ferritic Superalloys for Power-Generating Turbine Applications up to 1,033 K (open access)

Computational Design and Prototype Evaluation of Aluminide-Strengthened Ferritic Superalloys for Power-Generating Turbine Applications up to 1,033 K

The objective of the proposed research is to utilize modern computational tools, integrated with focused experiments, to design innovative ferritic NiAl-strengthened superalloys for fossil-energy applications at temperatures up to 1,033 K. Specifically, the computational alloy design aims toward (1) a steady-state creep rate of approximately 3 x 10{sup -11} s{sup -1} at a temperature of 1,033 K and a stress level of 35 MPa, (2) a ductility of 10% at room temperature, and (3) good oxidation and corrosion resistance at 1,033 K. The research yielded many outstanding research results, including (1) impurity-diffusion coefficients in {alpha} Fe have been calculated by first principles for a variety of solute species; (2) the precipitates were characterized by the transmission-electron microscopy (TEM) and analytical-electron microscopy (AEM), and the elemental partitioning has been determined; (3) a bending ductility of more than 5% has been achieved in the unrolled materials; and (4) optimal compositions with minimal secondary creep rates at 973 K have been determined. Impurity diffusivities in {alpha} Fe have been calculated within the formalisms of a harmonic transition-state theory and Le Claire nine-frequency model for vacancy-mediated diffusion. Calculated diffusion coefficients for Mo and W impurities are comparable to or larger than that for Fe …
Date: April 30, 2010
Creator: Liaw, Peter; Ghosh, Gautam; Asta, Mark; Fine, Morris & Liu, Chain
Object Type: Report
System: The UNT Digital Library
Thermal Stress During Pre-Incubation Induces Subsequent Developmental Plasticity in Northern Bobwhites (open access)

Thermal Stress During Pre-Incubation Induces Subsequent Developmental Plasticity in Northern Bobwhites

Northern bobwhite populations have declined concurrent with global warming. The focal period of this study was the 12-d pre-incubation period, when bobwhite eggs remain in the nest without the thermal protection of the incubating parent. This study first established the storage and thermal limits of bobwhite eggs, then investigated how global warming may impact oviparous embryos and how bobwhite embryos react to acute and chronic doses of simulated drought temperatures during pre-incubation. First, the maximum storage limit of bobwhite eggs was determined by storing eggs ≤21 d and measuring hatching success and pH of egg albumen and yolk. Hatching success of stored eggs declined after 14 d, when yolk and albumen pH reached levels detrimental to embryonic development. Secondly, thermal limits were determined by exposing bobwhite eggs to hyperthermic temperatures (38-52 °C). Bobwhite embryos survived 50 °C for 1 h, 49 °C for 3 h and 46 °C for 6 h. Results indicate an adaptation to the naturally occurring temperature extremes that can occur in the bobwhite's southern range during pre-incubation. Subsequently, bobwhite eggs were exposed to either low constant (LC), low fluctuating (LF), high constant (HC), or high fluctuating (HF) temperatures during pre-incubation to determine if the nature of …
Date: August 2010
Creator: Reyna, Kelly Shane
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Evaluated Nuclear Data (open access)

Evaluated Nuclear Data

This chapter describes the current status of evaluated nuclear data for nuclear technology applications. We start with evaluation procedures for neutron-induced reactions focusing on incident energies from the thermal energy up to 20 MeV, though higher energies are also mentioned. This is followed by examining the status of evaluated neutron data for actinides that play dominant role in most of the applications, followed by coolants/moderators, structural materials and fission products. We then discuss neutron covariance data that characterize uncertainties and correlations. We explain how modern nuclear evaluated data libraries are validated against an extensive set of integral benchmark experiments. Afterwards, we briefly examine other data of importance for nuclear technology, including fission yields, thermal neutron scattering and decay data. A description of three major evaluated nuclear data libraries is provided, including the latest version of the US library ENDF/B-VII.0, European JEFF-3.1 and Japanese JENDL-3.3. A brief introduction is made to current web retrieval systems that allow easy access to a vast amount of up-to-date evaluated nuclear data for nuclear technology applications.
Date: October 1, 2010
Creator: Oblozinsky, P.; Oblozinsky, P.; Herman, M. & Mughabghab, S. F.
Object Type: Book
System: The UNT Digital Library
Post-Civil War Democratization: Domestic and International Factors in Movement Toward and Away from Democracy (open access)

Post-Civil War Democratization: Domestic and International Factors in Movement Toward and Away from Democracy

Post-civil war democratization is a critical element of building sustainable peace in the post-civil war states. At the same time, studies of democratic transition and survival suggest that the post-civil war environment is not hospitable to either the transition to or survival of democracy. The post-civil war environment is contentious. Former protagonists are fearful about their security and at the same time they want to protect their political and economic interests. The central argument of this study is that former rivals can agree to a transition toward democracy to the extent that a stable balance of power exists between the government and rebel groups, a balance that eliminates the sort of security dilemma that would encourage one or both to resume armed conflict. And the balance should ensure access to political power and economic resources. This study identifies factors that contribute to the establishment of such a balance of power between former protagonists and factors that affects its stability. These factors should affect the decision of former protagonists on whether or not they can achieve their political and economic interests if they agree to a transition toward democracy once civil war ends. Factors that are conducive to a transition toward …
Date: May 2010
Creator: Joshi, Madhav
Object Type: Thesis or Dissertation
System: The UNT Digital Library
MicroCT-Based Skeletal Models for Use in Tomographic Voxel Phantoms for Radiological Protection (open access)

MicroCT-Based Skeletal Models for Use in Tomographic Voxel Phantoms for Radiological Protection

ABSTRACT The University of Florida (UF) proposes to develop two high-resolution image-based skeletal dosimetry models for direct use by ICRP Committee 2’s Task Group on Dose Calculation in their forthcoming Reference Voxel Male (RVM) and Reference Voxel Female (RVF) whole-body dosimetry phantoms. These two phantoms are CT-based, and thus do not have the image resolution to delineate and perform radiation transport modeling of the individual marrow cavities and bone trabeculae throughout their skeletal structures. Furthermore, new and innovative 3D microimaging techniques will now be required for the skeletal tissues following Committee 2’s revision of the target tissues of relevance for radiogenic bone cancer induction. This target tissue had been defined in ICRP Publication 30 as a 10-m cell layer on all bone surfaces of trabecular and cortical bone. The revised target tissue is now a 50-m layer within the marrow cavities of trabecular bone only and is exclusive of the marrow adipocytes. Clearly, this new definition requires the use of 3D microimages of the trabecular architecture not available from past 2D optical studies of the adult skeleton. With our recent acquisition of two relatively young cadavers (males of age 18-years and 40-years), we will develop a series of reference skeletal …
Date: March 30, 2010
Creator: Bolch, Wesley
Object Type: Report
System: The UNT Digital Library
EVALUATION OF ACTIVATION PRODUCTS IN REMAINING IN REMAINING K-, L- AND C-REACTOR STRUCTURES (open access)

EVALUATION OF ACTIVATION PRODUCTS IN REMAINING IN REMAINING K-, L- AND C-REACTOR STRUCTURES

An analytic model and calculational methodology was previously developed for P-reactor and R-reactor to quantify the radioisotopes present in Savannah River Site (SRS) reactor tanks and the surrounding structural materials as a result of neutron activation of the materials during reactor operation. That methodology has been extended to K-reactor, L-reactor, and C-reactor. The analysis was performed to provide a best-estimate source term input to the Performance Assessment for an in-situ disposition strategy by Site Decommissioning and Demolition (SDD). The reactor structure model developed earlier for the P-reactor and R-reactor analyses was also used for the K-reactor and L-reactor. The model was suitably modified to handle the larger Creactor tank and associated structures. For all reactors, the structure model consisted of 3 annular zones, homogenized by the amount of structural materials in the zone, and 5 horizontal layers. The curie content on an individual radioisotope basis and total basis for each of the regions was determined. A summary of these results are provided herein. The efficacy of this methodology to accurately predict the radioisotopic content of the reactor systems in question has been demonstrated and is documented in Reference 1. As noted in that report, results for one reactor facility cannot …
Date: September 30, 2010
Creator: Vinson, D. & Webb, R.
Object Type: Report
System: The UNT Digital Library
Transportation Energy Data Book: Edition 29 (open access)

Transportation Energy Data Book: Edition 29

The Transportation Energy Data Book: Edition 29 is a statistical compendium prepared and published by Oak Ridge National Laboratory (ORNL) under contract with the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, Vehicle Technologies Program. Designed for use as a desk-top reference, the Data Book represents an assembly and display of statistics and information that characterize transportation activity, and presents data on other factors that influence transportation energy use. The purpose of this document is to present relevant statistical data in the form of tables and graphs. The latest edition of the Data Book is available to a larger audience via the Internet (cta.ornl.gov/data). This edition of the Data Book has 12 chapters which focus on various aspects of the transportation industry. Chapter 1 focuses on petroleum; Chapter 2 energy; Chapter 3 highway vehicles; Chapter 4 light vehicles; Chapter 5 heavy vehicles; Chapter 6 alternative fuel vehicles; Chapter 7 fleet vehicles; Chapter 8 household vehicles; Chapter 9 nonhighway modes; Chapter 10 transportation and the economy; Chapter 11 greenhouse gas emissions; and Chapter 12 criteria pollutant emissions. The sources used represent the latest available data. There are also three appendices which include detailed source information for some tables, …
Date: July 1, 2010
Creator: Davis, Stacy Cagle; Diegel, Susan W. & Boundy, Robert Gary
Object Type: Report
System: The UNT Digital Library
Building America House Simulation Protocols (Revised) (open access)

Building America House Simulation Protocols (Revised)

The House Simulation Protocol document was developed to track and manage progress toward Building America's multi-year, average whole-building energy reduction research goals for new construction and existing homes, using a consistent analytical reference point. This report summarizes the guidelines for developing and reporting these analytical results in a consistent and meaningful manner for all home energy uses using standard operating conditions.
Date: October 1, 2010
Creator: Hendron, R. & Engebrecht, C.
Object Type: Report
System: The UNT Digital Library
Long-Term Monitoring at the East and West Flower Garden Banks, 2004-2008, Volume 1: Technical Report (open access)

Long-Term Monitoring at the East and West Flower Garden Banks, 2004-2008, Volume 1: Technical Report

A report describing the monitoring of the East and West Flower Garden Bank in accordance with the long-term monitoring protocol.
Date: December 2010
Creator: Zimmer, Beth; Duncan, Leslie; Aronson, Richard B.; Deslarzes, Kenneth J. P.; Deis, Donald R.; Robbart, Martha L. et al.
Object Type: Text
System: The UNT Digital Library
Thermal Identification of Clandestine Burials: A Signature Analysis and Image Classification Approach (open access)

Thermal Identification of Clandestine Burials: A Signature Analysis and Image Classification Approach

Clandestine burials, the interred human remains of forensic interest, are generally small features located in isolated environments. Typical ground searches can be both time-consuming and dangerous. Thermal remote sensing has been recognized for some time as a possible search strategy for such burials that are in relatively open areas; however, there is a paucity of published research with respect to this application. This project involved image manipulation, the analyses of signatures for "graves" of various depths when compared to an undisturbed background, and the use of image classification techniques to tease out these features. This research demonstrates a relationship between the depth of burial disturbance and the resultant signature. Further, image classification techniques, especially object-oriented algorithms, can be successfully applied to single band thermal imagery. These findings may ultimately decrease burial search times for law enforcement and increase the likelihood of locating clandestine graves.
Date: December 2010
Creator: Servello, John A.
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Nevada Test Site Environmental Report: 2009 (open access)

Nevada Test Site Environmental Report: 2009

The Nevada Test Site Environmental Report 2009 was prepared to meet the information needs of the public and the requirements and guidelines of the U.S. Department of Energy (DOE) for annual site environmental reports. It was prepared by National Security Technologies, LLC (NSTec), for the U.S. Department of Energy, National Nuclear Security Administration Nevada Site Office (NNSA/NSO). This and previous years’ Nevada Test Site Environmental Reports (NTSERs) are posted on the NNSA/NSO website at http://www.nv.doe.gov/library/publications/aser.aspx. This NTSER was prepared to satisfy DOE Order DOE O 231.1A, “Environment, Safety and Health Reporting.” Its purpose is to (1) report compliance status with environmental standards and requirements, (2) present results of environmental monitoring of radiological and nonradiological effluents, (3) report estimated radiological doses to the public from releases of radioactive material, (4) summarize environmental incidents of noncompliance and actions taken in response to them, (5) describe the NNSA/NSO Environmental Management System and characterize its performance, and (6) highlight significant environmental programs and efforts. This NTSER summarizes data and compliance status for calendar year 2009 at the Nevada Test Site (NTS) and its two support facilities, the North Las Vegas Facility (NLVF) and the Remote Sensing Laboratory (RSL)-Nellis. It also addresses environmental restoration (ER) …
Date: September 13, 2010
Creator: Wills, Cathy
Object Type: Report
System: The UNT Digital Library
"I Speak, Therefore I Am:" Identity and Self-Construction as Motivation to Engage in Electronic Word of Mouth (open access)

"I Speak, Therefore I Am:" Identity and Self-Construction as Motivation to Engage in Electronic Word of Mouth

To paraphrase an old bromide, "you are what you consume." Consumers derive their sense of self through products, brands, performances and a host of other meaning-laden materials that they consume. The marketing literature has long recognized possessions as an extension of the self-concept. Although hundreds of studies have examined the linkage between consumption and the self, surprisingly few have examined a related phenomenon - the relationship between the self-concept and word of mouth (WOM). A handful of studies have demonstrated the use of WOM to enhance the consumer's self-image, but most extant research focuses on how the act of engaging in WOM is used to build the self-concept. To date there has not been an extensive examination of the process by which WOM transfers the meaning of a product, brand, advertisement or narrative from one consumer to another as part of identity construction. This dissertation attempts to answer the following research questions: 1. Do self-concept and identity motivate consumers to engage in electronic word-of-mouth (eWOM)? 2. Is there a conceptual model to represent the effects of message characteristics, product/brand characteristics and individual personality differences on the self-enhancement value of eWOM and resulting eWOM behaviors? A conceptual model was proposed and, …
Date: August 2010
Creator: Taylor, David George
Object Type: Thesis or Dissertation
System: The UNT Digital Library
Trinity River Basin Environmental Restoration Initiative 2010 (open access)

Trinity River Basin Environmental Restoration Initiative 2010

This report's "objectives are to use the Soil and Water Assessment Tool (SWAT) model to; assess current rates and sources of sediment and nutrient loading of twelve major water supply reservoirs in ten watersheds of the Upper Trinity River Basin, to predict the effects of anticipated future urbanization, and to consider possible conservation practices that could decrease sediment and nutrient loading of these reservoirs" (p. ii).
Date: 2010
Creator: Wang, Xiuying; White, Michael; Lee, Taesoo; Tuppad, Pushpa; Srinivasan, Raghavan; Jones, Allan et al.
Object Type: Report
System: The Portal to Texas History
Beam lifetime and emittance growth in RHIC under normal operating conditions with the hydrogen gas jet, the cluster-jet and pellet targets (open access)

Beam lifetime and emittance growth in RHIC under normal operating conditions with the hydrogen gas jet, the cluster-jet and pellet targets

The inelastic scattering of the beam and the residual gas molecules in RHIC could represent one of the limitations on the beam life time and emittance growth. This report covers the dominant central nuclear collisions influence on the beam lifetime and transverse emittance growth. The cross sections for the beam-gas electron radiative captures are an order of magnitude smaller. The capture cross sections include the radiative and non-radiative capture, and the capture from the electron-positron pair creation from the 'vacuum capture'.
Date: September 1, 2010
Creator: Trbojevic, D.
Object Type: Report
System: The UNT Digital Library
Chlorido(4,4',4''-tri-tert-butyl-2,2':6',2''-terpyridine)platinum(II) chloride toluene monosolvate (open access)

Chlorido(4,4',4''-tri-tert-butyl-2,2':6',2''-terpyridine)platinum(II) chloride toluene monosolvate

In the title compound, [PtCl(C₂₇H₃₅N₃)]Cl·C₇H₈, the Ptᴵᴵ atom is coordinated in a pseudo-square-planar fashion by the N atoms of a 4,4',4''-tri-tert-butyl-2,2':6',2''-terpyridine ligand and a Cl atom.
Date: November 22, 2010
Creator: Batrice, Rami J.; Nesterov, Vladimir N. & Smucker, Bradley W.
Object Type: Article
System: The UNT Digital Library