Sample records for margin characterization rismc

  1. Light Water Reactor Sustainability Program Risk Informed Safety Margin Characterization (RISMC) Advanced Test Reactor Demonstration Case Study

    SciTech Connect (OSTI)

    Curtis Smith; David Schwieder; Cherie Phelan; Anh Bui; Paul Bayless

    2012-08-01T23:59:59.000Z

    Safety is central to the design, licensing, operation, and economics of Nuclear Power Plants (NPPs). Consequently, the ability to better characterize and quantify safety margin holds the key to improved decision making about LWR design, operation, and plant life extension. A systematic approach to characterization of safety margins and the subsequent margins management options represents a vital input to the licensee and regulatory analysis and decision making that will be involved. The purpose of the RISMC Pathway R&D is to support plant decisions for risk-informed margins management with the aim to improve economics, reliability, and sustain safety of current NPPs. Goals of the RISMC Pathway are twofold: (1) Develop and demonstrate a risk-assessment method coupled to safety margin quantification that can be used by NPP decision makers as part of their margin recovery strategies. (2) Create an advanced “RISMC toolkit” that enables more accurate representation of NPP safety margin. This report describes the RISMC methodology demonstration where the Advanced Test Reactor (ATR) was used as a test-bed for purposes of determining safety margins. As part of the demonstration, we describe how both the thermal-hydraulics and probabilistic safety calculations are integrated and used to quantify margin management strategies.

  2. Integrating Safety Assessment Methods using the Risk Informed Safety Margins Characterization (RISMC) Approach

    SciTech Connect (OSTI)

    Curtis Smith; Diego Mandelli

    2013-03-01T23:59:59.000Z

    Safety is central to the design, licensing, operation, and economics of nuclear power plants (NPPs). As the current light water reactor (LWR) NPPs age beyond 60 years, there are possibilities for increased frequency of systems, structures, and components (SSC) degradations or failures that initiate safety significant events, reduce existing accident mitigation capabilities, or create new failure modes. Plant designers commonly “over-design” portions of NPPs and provide robustness in the form of redundant and diverse engineered safety features to ensure that, even in the case of well-beyond design basis scenarios, public health and safety will be protected with a very high degree of assurance. This form of defense-in-depth is a reasoned response to uncertainties and is often referred to generically as “safety margin.” Historically, specific safety margin provisions have been formulated primarily based on engineering judgment backed by a set of conservative engineering calculations. The ability to better characterize and quantify safety margin is important to improved decision making about LWR design, operation, and plant life extension. A systematic approach to characterization of safety margins and the subsequent margin management options represents a vital input to the licensee and regulatory analysis and decision making that will be involved. In addition, as research and development (R&D) in the LWR Sustainability (LWRS) Program and other collaborative efforts yield new data, sensors, and improved scientific understanding of physical processes that govern the aging and degradation of plant SSCs needs and opportunities to better optimize plant safety and performance will become known. To support decision making related to economics, readability, and safety, the RISMC Pathway provides methods and tools that enable mitigation options known as margins management strategies. The purpose of the RISMC Pathway R&D is to support plant decisions for risk-informed margin management with the aim to improve economics, reliability, and sustain safety of current NPPs. As the lead Department of Energy (DOE) Laboratory for this Pathway, the Idaho National Laboratory (INL) is tasked with developing and deploying methods and tools that support the quantification and management of safety margin and uncertainty.

  3. Robustness of RISMC Insights under Alternative Aleatory/Epistemic Uncertainty Classifications: Draft Report under the Risk-Informed Safety Margin Characterization (RISMC) Pathway of the DOE Light Water Reactor Sustainability Program

    SciTech Connect (OSTI)

    Unwin, Stephen D.; Eslinger, Paul W.; Johnson, Kenneth I.

    2012-09-20T23:59:59.000Z

    The Risk-Informed Safety Margin Characterization (RISMC) pathway is a set of activities defined under the U.S. Department of Energy (DOE) Light Water Reactor Sustainability Program. The overarching objective of RISMC is to support plant life-extension decision-making by providing a state-of-knowledge characterization of safety margins in key systems, structures, and components (SSCs). A technical challenge at the core of this effort is to establish the conceptual and technical feasibility of analyzing safety margin in a risk-informed way, which, unlike conventionally defined deterministic margin analysis, would be founded on probabilistic characterizations of uncertainty in SSC performance. In the context of probabilistic risk assessment (PRA) technology, there has arisen a general consensus about the distinctive roles of two types of uncertainty: aleatory and epistemic, where the former represents irreducible, random variability inherent in a system, whereas the latter represents a state of knowledge uncertainty on the part of the analyst about the system which is, in principle, reducible through further research. While there is often some ambiguity about how any one contributing uncertainty in an analysis should be classified, there has nevertheless emerged a broad consensus on the meanings of these uncertainty types in the PRA setting. However, while RISMC methodology shares some features with conventional PRA, it will nevertheless be a distinctive methodology set. Therefore, the paradigms for classification of uncertainty in the PRA setting may not fully port to the RISMC environment. Yet the notion of risk-informed margin is based on the characterization of uncertainty, and it is therefore critical to establish a common understanding of uncertainty in the RISMC setting.

  4. Risk-Informed Safety Margin Characterization (RISMC): Integrated Treatment of Aleatory and Epistemic Uncertainty in Safety Analysis

    SciTech Connect (OSTI)

    R. W. Youngblood

    2010-10-01T23:59:59.000Z

    The concept of “margin” has a long history in nuclear licensing and in the codification of good engineering practices. However, some traditional applications of “margin” have been carried out for surrogate scenarios (such as design basis scenarios), without regard to the actual frequencies of those scenarios, and have been carried out with in a systematically conservative fashion. This means that the effectiveness of the application of the margin concept is determined in part by the original choice of surrogates, and is limited in any case by the degree of conservatism imposed on the evaluation. In the RISMC project, which is part of the Department of Energy’s “Light Water Reactor Sustainability Program” (LWRSP), we are developing a risk-informed characterization of safety margin. Beginning with the traditional discussion of “margin” in terms of a “load” (a physical challenge to system or component function) and a “capacity” (the capability of that system or component to accommodate the challenge), we are developing the capability to characterize probabilistic load and capacity spectra, reflecting both aleatory and epistemic uncertainty in system response. For example, the probabilistic load spectrum will reflect the frequency of challenges of a particular severity. Such a characterization is required if decision-making is to be informed optimally. However, in order to enable the quantification of probabilistic load spectra, existing analysis capability needs to be extended. Accordingly, the INL is working on a next-generation safety analysis capability whose design will allow for much more efficient parameter uncertainty analysis, and will enable a much better integration of reliability-related and phenomenology-related aspects of margin.

  5. Light Water Reactor Sustainability Program Risk-Informed Safety Margins Characterization (RISMC) PathwayTechnical Program Plan

    SciTech Connect (OSTI)

    Curtis Smith; Cristian Rabiti; Richard Martineau

    2012-11-01T23:59:59.000Z

    Safety is central to the design, licensing, operation, and economics of Nuclear Power Plants (NPPs). As the current Light Water Reactor (LWR) NPPs age beyond 60 years, there are possibilities for increased frequency of Systems, Structures, and Components (SSCs) degradations or failures that initiate safety-significant events, reduce existing accident mitigation capabilities, or create new failure modes. Plant designers commonly “over-design” portions of NPPs and provide robustness in the form of redundant and diverse engineered safety features to ensure that, even in the case of well-beyond design basis scenarios, public health and safety will be protected with a very high degree of assurance. This form of defense-in-depth is a reasoned response to uncertainties and is often referred to generically as “safety margin.” Historically, specific safety margin provisions have been formulated, primarily based on “engineering judgment.”

  6. Treatment of Passive Component Reliability in Risk-Informed Safety Margin Characterization FY 2010 Report

    SciTech Connect (OSTI)

    Robert W Youngblood

    2010-09-01T23:59:59.000Z

    The Risk-Informed Safety Margin Characterization (RISMC) pathway is a set of activities defined under the U.S. Department of Energy (DOE) Light Water Reactor Sustainability Program. The overarching objective of RISMC is to support plant life-extension decision-making by providing a state-of-knowledge characterization of safety margins in key systems, structures, and components (SSCs). A technical challenge at the core of this effort is to establish the conceptual and technical feasibility of analyzing safety margin in a risk-informed way, which, unlike conventionally defined deterministic margin analysis, is founded on probabilistic characterizations of SSC performance.

  7. Light Water Reactor Sustainability Program FY13 Status Update for EPRI - RISMC Collaboration

    SciTech Connect (OSTI)

    Curtis Smith

    2013-09-01T23:59:59.000Z

    The purpose of the Risk Informed Safety Margin Characterization (RISMC) Pathway research and development (R&D) is to support plant decisions for risk-informed margins management with the aim to improve economics, reliability, and sustain safety of current NPPs. Goals of the RISMC Pathway are twofold: (1) Develop and demonstrate a risk-assessment method coupled to safety margin quantification that can be used by NPP decision makers as part of their margin recovery strategies. (2) Create an advanced "RISMC toolkit" that enables more accurate representation of NPP safety margin. In order to carry out the R&D needed for the Pathway, the Idaho National Laboratory (INL) is collaborating with the Electric Power Research Institute (EPRI) in order to focus on applications of interest to the U.S. nuclear power industry. This report documents the collaboration activities performed between INL and EPRI during FY2013.

  8. Risk Informed Safety Margin Characterization (RISMC) Advanced Test Reactor

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOrigin ofEnergy at Waste-to-Energy usingofRetrofittingFundA l i c e L i p p e r t S e n i

  9. New Methods and Tools to Perform Safety Analysis within RISMC

    SciTech Connect (OSTI)

    Diego Mandelli; Curtis Smith; Cristian Rabiti; Andrea Alfonsi; Robert Kinoshita; Joshua Cogliati

    2013-11-01T23:59:59.000Z

    The Risk Informed Safety Margins Characterization (RISMC) Pathway uses a systematic approach developed to characterize and quantify safety margins of nuclear power plant structures, systems and components. What differentiates the RISMC approach from traditional probabilistic risk assessment (PRA) is the concept of safety margin. In PRA, a safety metric such as core damage frequency (CDF) is generally estimated using static fault-tree and event-tree models. However, it is not possible to estimate how close we are to physical safety limits (say peak clad temperature) for most accident sequences described in the PRA. In the RISMC approach, what we want to understand is not just the frequency of an event like core damage, but how close we are (or not) to this event and how we might increase our safety margin through margin management strategies in a Dynamic PRA (DPRA) fashion. This paper gives an overview of methods that are currently under development at the Idaho National Laboratory (INL) with the scope of advance the current state of the art of dynamic PRA.

  10. Risk-Informed Safety Margin Characterization Methods Development Work

    SciTech Connect (OSTI)

    Smith, Curtis L; Ma, Zhegang; Tom Riley; Mandelli, Diego; Nielsen, Joseph W; Alfonsi, Andrea; Rabiti, Cristian

    2014-09-01T23:59:59.000Z

    This report summarizes the research activity developed during the Fiscal year 2014 within the Risk Informed Safety Margin and Characterization (RISMC) pathway within the Light Water Reactor Sustainability (LWRS) campaign. This research activity is complementary to the one presented in the INL/EXT-??? report which shows advances Probabilistic Risk Assessment Analysis using RAVEN and RELAP-7 in conjunction to novel flooding simulation tools. Here we present several analyses that prove the values of the RISMC approach in order to assess risk associated to nuclear power plants (NPPs). We focus on simulation based PRA which, in contrast to classical PRA, heavily employs system simulator codes. Firstly we compare, these two types of analyses, classical and RISMC, for a Boiling water reactor (BWR) station black out (SBO) initiating event. Secondly we present an extended BWR SBO analysis using RAVEN and RELAP-5 which address the comments and suggestions received about he original analysis presented in INL/EXT-???. This time we focus more on the stochastic analysis such probability of core damage and on the determination of the most risk-relevant factors. We also show some preliminary results regarding the comparison between RELAP5-3D and the new code RELAP-7 for a simplified Pressurized Water Reactors system. Lastly we present some conceptual ideas regarding the possibility to extended the RISMC capabilities from an off-line tool (i.e., as PRA analysis tool) to an online-tool. In this new configuration, RISMC capabilities can be used to assist and inform reactor operator during real accident scenarios.

  11. Risk Informed Margins Management as part of Risk Informed Safety Margin Characterization

    SciTech Connect (OSTI)

    Curtis Smith

    2014-06-01T23:59:59.000Z

    The ability to better characterize and quantify safety margin is important to improved decision making about Light Water Reactor (LWR) design, operation, and plant life extension. A systematic approach to characterization of safety margins and the subsequent margin management options represents a vital input to the licensee and regulatory analysis and decision making that will be involved. In addition, as research and development in the LWR Sustainability (LWRS) Program and other collaborative efforts yield new data, sensors, and improved scientific understanding of physical processes that govern the aging and degradation of plant SSCs needs and opportunities to better optimize plant safety and performance will become known. To support decision making related to economics, readability, and safety, the Risk Informed Safety Margin Characterization (RISMC) Pathway provides methods and tools that enable mitigation options known as risk informed margins management (RIMM) strategies.

  12. RISK-INFORMED SAFETY MARGIN CHARACTERIZATION

    SciTech Connect (OSTI)

    Nam Dinh; Ronaldo Szilard

    2009-07-01T23:59:59.000Z

    The concept of safety margins has served as a fundamental principle in the design and operation of commercial nuclear power plants (NPPs). Defined as the minimum distance between a system’s “loading” and its “capacity”, plant design and operation is predicated on ensuring an adequate safety margin for safety-significant parameters (e.g., fuel cladding temperature, containment pressure, etc.) is provided over the spectrum of anticipated plant operating, transient and accident conditions. To meet the anticipated challenges associated with extending the operational lifetimes of the current fleet of operating NPPs, the United States Department of Energy (USDOE), the Idaho National Laboratory (INL) and the Electric Power Research Institute (EPRI) have developed a collaboration to conduct coordinated research to identify and address the technological challenges and opportunities that likely would affect the safe and economic operation of the existing NPP fleet over the postulated long-term time horizons. In this paper we describe a framework for developing and implementing a Risk-Informed Safety Margin Characterization (RISMC) approach to evaluate and manage changes in plant safety margins over long time horizons.

  13. A risk-informed approach to safety margins analysis

    SciTech Connect (OSTI)

    Curtis Smith; Diego Mandelli

    2013-07-01T23:59:59.000Z

    The Risk Informed Safety Margins Characterization (RISMC) Pathway is a systematic approach developed to characterize and quantify safety margins of nuclear power plant structures, systems and components. The model has been tested on the Advanced Test Reactor (ATR) at Idaho National Lab.

  14. Risk-Informed Safety Margin Characterization Case Study: Selection of Electrical Equipment to Be Subjected to Environmental Qualification

    SciTech Connect (OSTI)

    D. P. Blanchard; R. W. Youngblood

    2014-06-01T23:59:59.000Z

    The Risk-Informed Safety Margin Characterization (RISMC) pathway of the DOE’s Light Water Reactor Sustainability (LWRS) program focuses on advancing the state of the art in safety analysis and risk assessment to support decision-making on nuclear power plant operation well beyond the originally designed lifetime of the plants (i.e., beyond 60 years). Among the issues being addressed in RISMC is the significance of SSC aging and how confident we are about our understanding of its impact on the margin between the loads SSCs are expected to see during normal operation and accident conditions, and the SSC capacities (their ability to resist those loads) as the SSCs age. In this paper, a summary is provided of a case study that examines SSC aging from an environmental qualification (EQ) perspective. The case study illustrates how the state of knowledge regarding SSC margin can be characterized given the overall integrated plant design, and was developed to demonstrate a method for deciding on which cables to focus, which cables are not so important from an environmental qualification margin standpoint, and what plant design features or operating characteristics determine the role that environmental qualification plays in establishing a safety case on which decisions regarding margin can be made. The selection of cables for which demonstration of margin with respect to aging and environmental challenges uses a technique known as Prevention Analysis. Prevention Analysis is a Boolean method for optimal selection of SSCs (that is, those combinations of SSCs both necessary and sufficient to meet a predetermined selection criterion) in a manner that allows demonstration that plant-level safety can be demonstrated by the collection of selected SSCs alone. Choosing the set of SSCs that is necessary and sufficient to satisfy the safety objectives, and demonstrating that the safety objectives can be met effectively, determines where resources are best allocated to assure SSC performance margin. The paper describes the resulting component types that were selected by Prevention Analysis and identifies the accident sequence characteristics that cause these component types to be important from an EQ and aging perspective (and, hence, worthwhile evaluating the extent of safety margin). In addition, component types not selected as needing significant margin from an EQ and aging perspective are discussed and an engineering rationale is developed justifying the lack of need to apply resources to demonstrating margin for these component types. This rationale is in terms of design features of the plant and operating characteristics that make these component types less important from an EQ and aging perspective. While the case study focuses on EQ and aging of equipment and cables located inside the containment of this PWR, the prevention analysis method is demonstrated to be an effective technique for identification of minimal collections of components that would be effective in managing safety for a variety of issues associated with aging and long-term operation of the fleet of plants.

  15. Geotechnical characterization of sediments from Hydrate Ridge, Cascadia Continental Margin

    E-Print Network [OSTI]

    Tan, Brian B. (Brian Bautista), 1979-

    2004-01-01T23:59:59.000Z

    Eight whole core sediment samples were obtained from ODP Site 1244, Hydrate Ridge, Cascadia Continental Margin with the goal of understanding the stress history, consolidation behavior and strength characteristics of the ...

  16. RISMC ADVANCED SAFETY ANALYSIS WORKING PLAN – FY 2015 – FY 2019

    SciTech Connect (OSTI)

    Szilard, Ronaldo H; Smith, Curtis L

    2014-09-01T23:59:59.000Z

    SUMMARY In this report, the Advanced Safety Analysis Program (ASAP) objectives and value proposition is described. ASAP focuses on modernization of nuclear power safety analysis (tools, methods and data); implementing state-of-the-art modeling techniques (which include, for example, enabling incorporation of more detailed physics as they become available); taking advantage of modern computing hardware; and combining probabilistic and mechanistic analyses to enable a risk informed safety analysis process. The modernized tools will maintain the current high level of safety in our nuclear power plant fleet, while providing an improved understanding of safety margins and the critical parameters that affect them. Thus, the set of tools will provide information to inform decisions on plant modifications, refurbishments, and surveillance programs, while improving economics. The set of tools will also benefit the design of new reactors, enhancing safety per unit cost of a nuclear plant. As part of the discussion, we have identified three sets of stakeholders, the nuclear industry, the Department of Energy (DOE), and associated oversight organizations. These three groups would benefit from ASAP in different ways. For example, within the DOE complex, the possible applications that are seen include the safety of experimental reactors, facility life extension, safety-by-design in future generation advanced reactors, and managing security for the storage of nuclear material. This report provides information in five areas: 1. A value proposition (“why is this important?”) that will make the case for stakeholder’s use of the ASAP research and development (R&D) products. 2. An identification of likely end users and pathway to adoption of enhanced tools by the end-users. 3. A proposed set of practical and achievable “use case” demonstrations. 4. A proposed plan to address ASAP verification and validation (V&V) needs. 5. A proposed schedule for the multi-year ASAP.

  17. ANALYSIS OF PWR SBO CAUSED BY EXTERNAL FLOODING USING THE RISMC TOOLKIT

    SciTech Connect (OSTI)

    Mandelli, Diego; Smith, Curtis; Prescott, Steven; Alfonsi, Andrea; Rabiti, Cristian; Cogliati, Joshua; Kinoshita, Robert

    2014-08-01T23:59:59.000Z

    The existing fleet of nuclear power plants is in the process of extending its lifetime and increasing the power generated from these plants via power uprates. In order to evaluate the impacts of these two factors on the safety of the plant, the Risk Informed Safety Margin Characterization project aims to provide insights to decision makers through a series of simulations of the plant dynamics for different initial conditions (e.g., probabilistic analysis and uncertainty quantification). This paper focuses on the impacts of power uprate on the safety margin of a boiling water reactor for a flooding induced station black-out event. Analysis is performed by using a combination of thermal-hydraulic codes and a stochastic analysis tool currently under development at the Idaho National Laboratory, i.e. RAVEN. We employed both classical statistical tools, i.e. Monte-Carlo, and more advanced machine learning based algorithms to perform uncertainty quantification in order to quantify changes in system performance and limitations as a consequence of power uprate. Results obtained give a detailed investigation of the issues associated with a plant power uprate including the effects of station black-out accident scenarios. We were able to quantify how the timing of specific events was impacted by a higher nominal reactor core power. Such safety insights can provide useful information to the decision makers to perform risk informed margins management.

  18. Implementation of Stochastic Polynomials Approach in the RAVEN Code

    SciTech Connect (OSTI)

    Cristian Rabiti; Paul Talbot; Andrea Alfonsi; Diego Mandelli; Joshua Cogliati

    2013-10-01T23:59:59.000Z

    RAVEN, under the support of the Nuclear Energy Advanced Modeling and Simulation (NEAMS) program, has been tasked to provide the necessary software and algorithms to enable the application of the conceptual framework developed by the Risk Informed Safety Margin Characterization (RISMC) [1] path. RISMC is one of the paths defined under the Light Water Reactor Sustainability (LWRS) DOE program.

  19. Risk Informed Safety Margin Characterization Case Study: Selection of Electrical Equipment To Be Subjected to Environmental Qualification

    SciTech Connect (OSTI)

    R. Youngblood; D. Blanchard

    2011-09-01T23:59:59.000Z

    In general, the margins-based safety case helps the decision-maker manage plant margins most effectively. It tells the plant decision-maker such things as what margin is present (at the plant level, at the functional level, at the barrier level, at the component level), and where margin is thin or perhaps just degrading. If the plant is safe, it tells the decision-maker why the plant is safe and where margin needs to be maintained, and perhaps where the plant can afford to relax.

  20. Risk Informed Safety Margin Characterization Case Study: Selection of Electrical Equipment To Be Subjected to Environmental Qualification

    SciTech Connect (OSTI)

    D. Blanchard; R. Youngblood

    2012-04-01T23:59:59.000Z

    In general, the margins-based safety case helps the decision-maker manage plant margins most effectively. It tells the plant decision-maker such things as what margin is present (at the plant level, at the functional level, at the barrier level, at the component level), and where margin is thin or perhaps just degrading. If the plant is safe, it tells the decision-maker why the plant is safe and where margin needs to be maintained, and perhaps where the plant can afford to relax.

  1. Light Water Reactor Sustainability Program Technical Basis Guide Describing How to Perform Safety Margin Configuration Risk Management

    SciTech Connect (OSTI)

    Curtis Smith; James Knudsen; Bentley Harwood

    2013-08-01T23:59:59.000Z

    The INL has carried out a demonstration of the RISMC approach for the purpose of configuration risk management. We have shown how improved accuracy and realism can be achieved by simulating changes in risk – as a function of different configurations – in order to determine safety margins as the plant is modified. We described the various technical issues that play a role in these configuration-based calculations with the intent that future applications can take advantage of the analysis benefits while avoiding some of the technical pitfalls that are found for these types of calculations. Specific recommendations have been provided on a variety of topics aimed at improving the safety margin analysis and strengthening the technical basis behind the analysis process.

  2. Comparison of a Traditional Probabilistic Risk Assessment Approach with Advanced Safety Analysis

    SciTech Connect (OSTI)

    Smith, Curtis L; Mandelli, Diego; Zhegang Ma

    2014-11-01T23:59:59.000Z

    As part of the Light Water Sustainability Program (LWRS) [1], the purpose of the Risk Informed Safety Margin Characterization (RISMC) [2] Pathway research and development (R&D) is to support plant decisions for risk-informed margin management with the aim to improve economics, reliability, and sustain safety of current NPPs. In this paper, we describe the RISMC analysis process illustrating how mechanistic and probabilistic approaches are combined in order to estimate a safety margin. We use the scenario of a “station blackout” (SBO) wherein offsite power and onsite power is lost, thereby causing a challenge to plant safety systems. We describe the RISMC approach, illustrate the station blackout modeling, and contrast this with traditional risk analysis modeling for this type of accident scenario. We also describe our approach we are using to represent advanced flooding analysis.

  3. Accident tolerant fuel analysis

    SciTech Connect (OSTI)

    Smith, Curtis [Idaho National Laboratory; Chichester, Heather [Idaho National Laboratory; Johns, Jesse [Texas A& M University; Teague, Melissa [Idaho National Laboratory; Tonks, Michael Idaho National Laboratory; Youngblood, Robert [Idaho National Laboratory

    2014-09-01T23:59:59.000Z

    Safety is central to the design, licensing, operation, and economics of Nuclear Power Plants (NPPs). Consequently, the ability to better characterize and quantify safety margin holds the key to improved decision making about light water reactor design, operation, and plant life extension. A systematic approach to characterization of safety margins and the subsequent margins management options represents a vital input to the licensee and regulatory analysis and decision making that will be involved. The purpose of the Risk Informed Safety Margin Characterization (RISMC) Pathway research and development (R&D) is to support plant decisions for risk-informed margins management by improving economics and reliability, and sustaining safety, of current NPPs. Goals of the RISMC Pathway are twofold: (1) Develop and demonstrate a risk-assessment method coupled to safety margin quantification that can be used by NPP decision makers as part of their margin recovery strategies. (2) Create an advanced ''RISMC toolkit'' that enables more accurate representation of NPP safety margin. In order to carry out the R&D needed for the Pathway, the Idaho National Laboratory is performing a series of case studies that will explore methods- and tools-development issues, in addition to being of current interest in their own right. One such study is a comparative analysis of safety margins of plants using different fuel cladding types: specifically, a comparison between current-technology Zircaloy cladding and a notional ''accident-tolerant'' (e.g., SiC-based) cladding. The present report begins the process of applying capabilities that are still under development to the problem of assessing new fuel designs. The approach and lessons learned from this case study will be included in future Technical Basis Guides produced by the RISMC Pathway. These guides will be the mechanism for developing the specifications for RISMC tools and for defining how plant decision makers should propose and evaluate margin recovery strategies.

  4. Accident Tolerant Fuel Analysis

    SciTech Connect (OSTI)

    Curtis Smith; Heather Chichester; Jesse Johns; Melissa Teague; Michael Tonks; Robert Youngblood

    2014-09-01T23:59:59.000Z

    Safety is central to the design, licensing, operation, and economics of Nuclear Power Plants (NPPs). Consequently, the ability to better characterize and quantify safety margin holds the key to improved decision making about light water reactor design, operation, and plant life extension. A systematic approach to characterization of safety margins and the subsequent margins management options represents a vital input to the licensee and regulatory analysis and decision making that will be involved. The purpose of the Risk Informed Safety Margin Characterization (RISMC) Pathway research and development (R&D) is to support plant decisions for risk-informed margins management by improving economics and reliability, and sustaining safety, of current NPPs. Goals of the RISMC Pathway are twofold: (1) Develop and demonstrate a risk-assessment method coupled to safety margin quantification that can be used by NPP decision makers as part of their margin recovery strategies. (2) Create an advanced “RISMC toolkit” that enables more accurate representation of NPP safety margin. In order to carry out the R&D needed for the Pathway, the Idaho National Laboratory is performing a series of case studies that will explore methods- and tools-development issues, in addition to being of current interest in their own right. One such study is a comparative analysis of safety margins of plants using different fuel cladding types: specifically, a comparison between current-technology Zircaloy cladding and a notional “accident-tolerant” (e.g., SiC-based) cladding. The present report begins the process of applying capabilities that are still under development to the problem of assessing new fuel designs. The approach and lessons learned from this case study will be included in future Technical Basis Guides produced by the RISMC Pathway. These guides will be the mechanism for developing the specifications for RISMC tools and for defining how plant decision makers should propose and evaluate margin recovery strategies.

  5. CASE STUDY FOR ENHANCED ACCIDENT TOLERANCE DESIGN CHANGES

    SciTech Connect (OSTI)

    Prescott, Steven [Idaho National Laboratory; Smith, Curtis [Idaho National Laboratory; Tony Koonce

    2014-09-01T23:59:59.000Z

    The ability to better characterize and quantify safety margin is important to improved decision making about Light Water Reactor (LWR) design, operation, and plant life extension. A systematic approach to characterization of safety margins and the subsequent margin management options represents a vital input to the licensee and regulatory analysis and decision making that will be involved. In addition, as research and development in the LWR Sustainability (LWRS) Program and other collaborative efforts yield new data, sensors, and improved scientific understanding of physical processes that govern the aging and degradation of plant SSCs needs and opportunities to better optimize plant safety and performance will become known. To support decision making related to economics, readability, and safety, the Risk Informed Safety Margin Characterization (RISMC) Pathway provides methods and tools that enable mitigation options known as risk informed margins management (RIMM) strategies. The methods and tools provided by RISMC are essential to a comprehensive and integrated RIMM approach that supports effective preservation of margin for both active and passive SSCs. In this report, we discuss the methods and technologies behind RIMM for an application focused on enhanced accident tolerance design changes for a representative nuclear power plant. We look at a variety of potential plant modifications and evaluate, using the RISMC approach, the implications to safety margin for the various strategies.

  6. 167 Prospectus California Margin

    E-Print Network [OSTI]

    . Each of the three transects across the California Current will compare deep-water sites near the core), for those sites that require it, can be obtained from the following World Wide Web site: http margin, Deep Sea Drilling Project (DSDP) Leg 63, occurred immediately before the first deployment

  7. contingency Nominal loading margin

    E-Print Network [OSTI]

    Member Member Fellow Electrical and Computer Engineering Department University of Wisconsin, Madison WI 53706 USA Abstract: The change in the loading margin to voltage collapse when line outages occur the line outages of the IEEE 118 bus system. The results show the effective ranking of contingencies

  8. Station Blackout: A case study in the interaction of mechanistic and probabilistic safety analysis

    SciTech Connect (OSTI)

    Curtis Smith; Diego Mandelli; Cristian Rabiti

    2013-11-01T23:59:59.000Z

    The ability to better characterize and quantify safety margins is important to improved decision making about nuclear power plant design, operation, and plant life extension. As research and development (R&D) in the light-water reactor (LWR) Sustainability (LWRS) Program and other collaborative efforts yield new data, sensors, and improved scientific understanding of physical processes that govern the aging and degradation of plant SSCs needs and opportunities to better optimize plant safety and performance will become known. The purpose of the Risk Informed Safety Margin Characterization (RISMC) Pathway R&D is to support plant decisions for risk-informed margin management with the aim to improve economics, reliability, and sustain safety of current NPPs. In this paper, we describe the RISMC analysis process illustrating how mechanistic and probabilistic approaches are combined in order to estimate a safety margin. We use the scenario of a “station blackout” wherein offsite power and onsite power is lost, thereby causing a challenge to plant safety systems. We describe the RISMC approach, illustrate the station blackout modeling, and contrast this with traditional risk analysis modeling for this type of accident scenario.

  9. Margins up; consumption down

    SciTech Connect (OSTI)

    Mantho, M.

    1983-09-01T23:59:59.000Z

    The results of a survey of dealers in the domestic fuel oil industry are reported. Wholesale prices, reacting to oversupply, decreased as did retail prices; retail prices decreased at a slower rate so profit margins were larger. This trend produced competitive markets as price-cutting became the method for increasing a dealer's share of the profits. Losses to other fuels decreased, when the figures were compared to earlier y; and cash flow was very good for most dealers. In summary, profits per gallon of oil delivered increased, while the consumption of gasoline per customer decreased. 22 tables.

  10. Coastal ocean margins program

    SciTech Connect (OSTI)

    Not Available

    1988-12-01T23:59:59.000Z

    The marine research program supported by the Office of Energy Research, Ecological Research Division, is focused to provide scientific information on major environmental issues facing development and expansion of most energy technologies and energy policy. These issues include waste disposal, siting/operations, and possible long term effects on global systems. The research is concentrated along the United States coastal margins where marine waters provide abundant food and resources while assimilating discharges from atmospheric, terrestrial, and aquatic sources. The program focuses on the formation and transport of particles within the waters of the continental shelf and the fate of these particles, whether on the shelf, on the slope, or in the open ocean. The program is conducted with multidisciplinary teams of researchers who investigate water mass movements, biological productivity, and naturally forming particles, as well as contaminant transport, to develop a clear understanding of the exchanges of contaminants and other materials that take place between continental shelf and open ocean waters. Seventy-five percent of the projects are funded to university grantees and twenty-five percent to National Laboratories.

  11. Sandia National Laboratories: critical marginal ice zone

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    marginal ice zone NASA Award for Marginal Ice Zone Observations and Process Experiment (MIZOPEX) On February 24, 2015, in Analysis, Climate, Modeling & Analysis, Monitoring, News,...

  12. INTEGRATION OF RELIABILITY WITH MECHANISTIC THERMALHYDRAULICS: REPORT ON APPROACH AND TEST PROBLEM RESULTS

    SciTech Connect (OSTI)

    J. S. Schroeder; R. W. Youngblood

    2011-07-01T23:59:59.000Z

    The Risk-Informed Safety Margin Characterization (RISMC) pathway of the Light Water Reactor Sustainability Program is developing simulation-based methods and tools for analyzing safety margin from a modern perspective. [1] There are multiple definitions of 'margin.' One class of definitions defines margin in terms of the distance between a point estimate of a given performance parameter (such as peak clad temperature), and a point-value acceptance criterion defined for that parameter (such as 2200 F). The present perspective on margin is that it relates to the probability of failure, and not just the distance between a nominal operating point and a criterion. In this work, margin is characterized through a probabilistic analysis of the 'loads' imposed on systems, structures, and components, and their 'capacity' to resist those loads without failing. Given the probabilistic load and capacity spectra, one can assess the probability that load exceeds capacity, leading to component failure. Within the project, we refer to a plot of these probabilistic spectra as 'the logo.' Refer to Figure 1 for a notional illustration. The implications of referring to 'the logo' are (1) RISMC is focused on being able to analyze loads and spectra probabilistically, and (2) calling it 'the logo' tacitly acknowledges that it is a highly simplified picture: meaningful analysis of a given component failure mode may require development of probabilistic spectra for multiple physical parameters, and in many practical cases, 'load' and 'capacity' will not vary independently.

  13. Characterizing

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625govInstrumentstdmadapInactiveVisiting the TWPSuccessAlamosCharacterization of Selective Binding of AlkaliImpact of

  14. Dynamics of the continental margins

    SciTech Connect (OSTI)

    Not Available

    1990-11-01T23:59:59.000Z

    On 18--20 June 1990, over 70 oceanographers conducting research in the ocean margins of North America attended a workshop in Virginia Beach, Virginia. The purpose of the workshop was to provide the Department of Energy with recommendations for future research on the exchange of energy-related materials between the coastal and interior ocean and the relationship between the ocean margins and global change. The workshop was designed to optimize the interaction of scientists from specific research disciplines (biology, chemistry, physics and geology) as they developed hypotheses, research questions and topics and implementation plans. The participants were given few restraints on the research they proposed other than realistic time and monetary limits. The interdisciplinary structure of the meeting promoted lively discussion and creative research plans. The meeting was divided into four working groups based on lateral, vertical, air/sea and sediment/water processes. Working papers were prepared and distributed before the meeting. During the meeting the groups revised the papers and added recommendations that appear in this report, which was reviewed by an Executive Committee.

  15. Sandia National Laboratories: Marginal Ice Zone Observations...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Marginal Ice Zone Observations and Processes Experiment mission Sierra Unmanned Aerial Vehicle to Begin Flights Over Arctic Sea Ice On July 25, 2013, in Climate, Customers &...

  16. Marginal vitiligo: an unusual depigmenting disorder

    E-Print Network [OSTI]

    Trikha, Ritika; McCowan, Nancye; Brodell, Robert

    2015-01-01T23:59:59.000Z

    including marginal vitiligo, DLE, and hypopigmented MF.Direct immunofluorescence DLE: Discoid lupus erythematosusdiagnosis of IVRB includes DLE. In fact, the patches of

  17. Assessment of seismic margin calculation methods

    SciTech Connect (OSTI)

    Kennedy, R.P.; Murray, R.C.; Ravindra, M.K.; Reed, J.W.; Stevenson, J.D.

    1989-03-01T23:59:59.000Z

    Seismic margin review of nuclear power plants requires that the High Confidence of Low Probability of Failure (HCLPF) capacity be calculated for certain components. The candidate methods for calculating the HCLPF capacity as recommended by the Expert Panel on Quantification of Seismic Margins are the Conservative Deterministic Failure Margin (CDFM) method and the Fragility Analysis (FA) method. The present study evaluated these two methods using some representative components in order to provide further guidance in conducting seismic margin reviews. It is concluded that either of the two methods could be used for calculating HCLPF capacities. 21 refs., 9 figs., 6 tabs.

  18. Dissecting the eastern margin of the Tibetan plateau : a study of landslides, erosion and river incision in a transient landscape

    E-Print Network [OSTI]

    Ouimet, William Burke

    2007-01-01T23:59:59.000Z

    The eastern margin of the Tibetan plateau is characterized by large rivers dissecting regional topography that has been uplifted in association with the continued convergence of the Indian subcontinent and Eurasia. In this ...

  19. Large margin classification in infinite neural networks

    E-Print Network [OSTI]

    Saul, Lawrence K.

    Large margin classification in infinite neural networks Youngmin Cho and Lawrence K. Saul, CA 92093-0404 Abstract We introduce a new family of positive-definite kernels for large margin classi- fication in support vector machines (SVMs). These kernels mimic the computation in large neural networks

  20. MARGIN AND SENSITIVITY METHODS SECURITY ANALYSIS

    E-Print Network [OSTI]

    MARGIN AND SENSITIVITY METHODS FOR SECURITY ANALYSIS OF ELECTRIC POWER SYSTEMS by Scott Greene the amount by which system loads or power transfers can change before a security violation, such as an overloaded transmission line, is encountered. This thesis shows how to efficiently compute security margins

  1. Analysis of gain margins and phase margins of a nonlinear reactor control system

    SciTech Connect (OSTI)

    Chang, C.H.; Chang, M.K. (Chung Cheng Inst. of Technology, Tao-Yuan (Taiwan, Province of China))

    1994-08-01T23:59:59.000Z

    By using the gain-phase margin tester, the parameter-plane method for the nonlinear control system is extended to frequency-domain related to gain margin and phase margin. The stability and self-excited oscillation are investigated with respect to the adjustable parameters. The useful information concerning the effect of adjustable parameters can be obtained, after the describing function curves and the boundaries of constant gain margin and constant phase margin are plotted in the parameter plane. Some interesting consequences are offered by employing the practical control system of a material testing reactor.

  2. Gain margin and phase margin analysis of a nuclear reactor control system with multiple transport lags

    SciTech Connect (OSTI)

    Chang, C.H. (Institute of Electronics, National Chiao-Tung Univ. (TW)); Han, K.W. (Chung-Shan Institute and National Chiao-Tung Univ., Hsinchu (TW))

    1989-08-01T23:59:59.000Z

    In this paper a method for finding the boundaries of constant gain margin and phase margin of control systems with transport lags and adjustable parameters is presented. The considered systems are first modified by adding a gain-phase margin tester, then the characteristic equations are formulated, and finally the stability equations are used to find the boundaries of constant gain margin and phase margin. The main advantage of the proposed method is to obtain complete information about the effects of adjustable parameters on gain margin and phase margin and their corresponding crossover frequencies. In order to show the usefulness of the proposed method a nuclear reactor control system with multiple transport lags is chosen as one of the examples.

  3. Extending RISMC Capabilities for Real-Time Diagnostics and Prognostics

    SciTech Connect (OSTI)

    curtis smith; Mandelli, Diego

    2014-11-01T23:59:59.000Z

    Quick and effective accident management is essential in any industry in order to limit and contain possible threats to both people and environment/assets. This is in particular relevant in the nuclear industry where accidents may have major impacts from an economic, health and societal point of view. As an example, the Fukushima Dai-ichi nuclear power plant accident highlighted the importance of the ability of plant operators and plant staff to react quickly and effectively in accident conditions. This particular event showed the importance of being able to: • Determine/estimate the actual status of the plant (i.e., diagnosis) when the monitoring system is corrupted or partially unavailable, and, • Forecast its future evolution (i.e., prognosis). In this paper we want to describe a research direction geared toward the development of a new set of advanced diagnosis and prognosis tools. We employ innovative data mining and machine learning techniques that are able to infer plant status and mimic the plant’s full temporal behavior in order to assist the reactor operators during an accident scenario.

  4. Wholesale marginal prices in competitive generation markets

    SciTech Connect (OSTI)

    Perez-Arriaga, I.J. [National Electric Regulatory Commission, Madrid (Spain)] [National Electric Regulatory Commission, Madrid (Spain); Meseguer, C. [Univ. Pontificia Comillas, Madrid (Spain). Inst. de Investigacion Tecnologica] [Univ. Pontificia Comillas, Madrid (Spain). Inst. de Investigacion Tecnologica

    1997-05-01T23:59:59.000Z

    Wholesale marginal electricity prices are being used in several actual competitive generation markets worldwide, both to remunerate generators and to charge consumption. These prices must account not only for energy, but also for guarantee of supply in the long and the short term. This paper: (a) provides a sound conceptual and quantitative foundation for wholesale pricing based on generation services, where any existing restrictions in operation or planning in real power markets are accounted for, (b) clearly establishes the relationship between short term marginal costs, long term marginal costs and optimal wholesale electricity prices, and (c) identifies the reasons for mismatches in cost recovery with marginal generation prices. The theoretical results are verified with a detailed realistic power system model.

  5. Marginal, Erodible Land Retirement Policy (Minnesota)

    Broader source: Energy.gov [DOE]

    It is state policy to encourage the retirement of marginal, highly erodible land, particularly land adjacent to public waters and drainage systems, from crop production and to reestablish a cover...

  6. On the quantification of safety margins

    E-Print Network [OSTI]

    Pagani, Lorenzo P

    2004-01-01T23:59:59.000Z

    The nuclear industry has relied on the concept of Defense in Depth (DID) and traditional safety margins to deal with the uncertainties associated with the design and operation of nuclear facilities. These concepts were ...

  7. Estimation of Highway Maintenance Marginal Cost under Multiple Maintenance Activities

    E-Print Network [OSTI]

    Anani, Shadi B.; Madanat, Samer M

    2010-01-01T23:59:59.000Z

    Marginal costs for road maintenance and operation - a cost2010-01) Estimation of Highway Maintenance Marginal Costunder Multiple Maintenance Activities Shadi B. Anani and

  8. ITP Steel: Steel Industry Marginal Opportunity Study September...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Steel Industry Marginal Opportunity Study September 2005 ITP Steel: Steel Industry Marginal Opportunity Study September 2005 steelmarginalopportunity.pdf More Documents &...

  9. Risk Informed Safety Margin Characterization Case Study: Selection of

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels DataDepartment of Energy Your Density Isn'tOrigin ofEnergy at Waste-to-Energy usingofRetrofittingFundA l i c e L i p p e r t S e n

  10. Electromagnetic exploration of the Exmouth and Vřring rifted margins

    E-Print Network [OSTI]

    Myer, David Gerard

    2012-01-01T23:59:59.000Z

    continental margin; seismic interpretation, stratigraphy,CSEM, and seismic interpretation; (c) investigate the effect

  11. Focus on Venezuelan heavy crude: refining margins

    SciTech Connect (OSTI)

    Not Available

    1984-01-25T23:59:59.000Z

    Of six crudes refined in the US Gulf Coast, heavy Venezuelan crude Lagunillas (15/sup 0/ API) provides the best margin per barrel. Data for end of December 1983 and the first three weeks of January show that margins on all crudes are on the rise in this market, due to a turnaround in product prices. The lighter crudes are showing the greatest increase in Gross Product Worth. This is having a modest shrinking effect on the margin differential between light and heavy crudes in this market. The domestic crude West Texas Intermediate, at 40/sup 0/ API, provides the highest GPW in this crude slate sample, over US $31 per barrel, compared to GPW of under US $28 per barrel for Lagunillas. Still, as Lagunillas cost about US $8 less than does WTI, refiners with sufficient residue conversion capacity can be earning about US $3.50 more in margin per barrel than they can with WTI. Although few refiners would be using a 15/sup 0/ API crude exclusively for any length of time, heavier oil's inclusion in modern refiners' diets is enhancing their competitive position more than any other single factor. This issue of Energy Detente presents the fuel price/tax series and industrial fuel prices for January 1984 for countries of the Western Hemisphere.

  12. Shear measurements across the northern margin of Whillans Ice Stream

    E-Print Network [OSTI]

    Van Der Veen, C.J.; Jezek, K.; Stearns, Leigh

    2007-01-01T23:59:59.000Z

    Field measurements of surface deformation across the northern shear margin of Whillans Ice Stream, West Antarctica, were analyzed to better understand the processes controlling the position and migration of this margin. Four lines of poles extending...

  13. Hierarchical Marginal Land Assessment for Land Use Planning

    SciTech Connect (OSTI)

    Kang, Shujiang [ORNL; Post, Wilfred M [ORNL; Wang, Dali [ORNL; Nichols, Dr Jeff A [ORNL; Bandaru, Vara Prasad [ORNL

    2013-01-01T23:59:59.000Z

    Marginal land provides an alternative potential for food and bioenergy production in the face of limited land resources; however, effective assessment of marginal lands is not well addressed. Concerns over environmental risks, ecosystem services and sustainability for marginal land have been widely raised. The objective of this study was to develop a hierarchical marginal land assessment framework for land use planning and management. We first identified major land functions linking production, environment, ecosystem services and economics, and then classified land resources into four categories of marginal land using suitability and limitations associated with major management goals, including physically marginal land, biologically marginal land, environmental-ecological marginal land, and economically marginal land. We tested this assessment framework in south-western Michigan, USA. Our results indicated that this marginal land assessment framework can be potentially feasible on land use planning for food and bioenergy production, and balancing multiple goals of land use management. We also compared our results with marginal land assessment from the Conservation Reserve Program (CRP) and land capability classes (LCC) that are used in the US. The hierarchical assessment framework has advantages of quantitatively reflecting land functions and multiple concerns. This provides a foundation upon which focused studies can be identified in order to improve the assessment framework by quantifying high-resolution land functions associated with environment and ecosystem services as well as their criteria are needed to improve the assessment framework.

  14. Caldera Rim Margins | Open Energy Information

    Open Energy Info (EERE)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page onYou are now leaving Energy.gov You are now leaving Energy.gov You are beingZealand Jump to:EzfeedflagBiomassSustainableCSL Gas Recovery Biomass Facility80 Jump370Caldera Rim Margins

  15. MARGINAL EXPENSE OIL WELL WIRELESS SURVEILLANCE MEOWS

    SciTech Connect (OSTI)

    Mason M. Medizade; John R. Ridgely; Donald G. Nelson

    2004-11-01T23:59:59.000Z

    A marginal expense oil well wireless surveillance system to monitor system performance and production from rod-pumped wells in real time from wells operated by Vaquero Energy in the Edison Field, Main Area of Kern County in California has been successfully designed and field tested. The surveillance system includes a proprietary flow sensor, a programmable transmitting unit, a base receiver and receiving antenna, and a base station computer equipped with software to interpret the data. First, the system design is presented. Second, field data obtained from three wells is shown. Results of the study show that an effective, cost competitive, real-time wireless surveillance system can be introduced to oil fields across the United States and the world.

  16. african continental margin: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Palaeocene extension on the Lofoten and Vring margins, and the additional Eocene subsidence and faulting, implies that Nick Kusznir; Alan Roberts; Rob Hunsdale 183...

  17. Front and Center: Bringing Marginalized Girls into Focus in STEM...

    Office of Environmental Management (EM)

    federal government employees who are STEM professionals with teachers and middle school students to share their passion, including some of the most marginalized students....

  18. active continental margin: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    HMMs, On-line handwrit- ing recognition, Off Do,Trinh-Minh-Tri 336 Derivation of Locational Marginal Prices for Restructured Wholesale Power Markets Energy Storage, Conversion...

  19. The continental margin is a key source of iron to the HNLC North Pacific Ocean

    SciTech Connect (OSTI)

    Lam, P.J.; Bishop, J.K.B

    2008-01-15T23:59:59.000Z

    Here we show that labile particulate iron and manganese concentrations in the upper 500m of the Western Subarctic Pacific, an iron-limited High Nutrient Low Chlorophyll (HNLC) region, have prominent subsurface maxima between 100-200 m, reaching 3 nM and 600 pM, respectively. The subsurface concentration maxima in particulate Fe are characterized by a more reduced oxidation state, suggesting a source from primary volcagenic minerals such as from the Kuril/Kamchatka margin. The systematics of these profiles suggest a consistently strong lateral advection of labile Mn and Fe from redox-mobilized labile sources at the continental shelf supplemented by a more variable source of Fe from the upper continental slope. This subsurface supply of iron from the continental margin is shallow enough to be accessible to the surface through winter upwelling and vertical mixing, and is likely a key source of bioavailable Fe to the HNLC North Pacific.

  20. Derivation of Locational Marginal Prices for Restructured Wholesale Power Markets

    E-Print Network [OSTI]

    Tesfatsion, Leigh

    Derivation of Locational Marginal Prices for Restructured Wholesale Power Markets Haifeng Liu restructured wholesale power markets, the detailed derivation of LMPs as actually used in industry practice Operator (MISO). Keywords: Locational marginal pricing, wholesale power market, AC optimal power flow, DC

  1. Assessment of Biomass Resources from Marginal Lands in APEC Economies

    SciTech Connect (OSTI)

    Milbrandt, A.; Overend, R. P.

    2009-08-01T23:59:59.000Z

    The goal of this study is to examine the marginal lands in Asia-Pacific Economic Cooperation (APEC) economies and evaluate their biomass productivity potential. Twelve categories of marginal lands are identified using the Global Agro-Ecological Zones system of the United Nations Food and Agriculture Organization.

  2. Automatic Model Complexity Control Using Marginalized Discriminative Growth Functions

    E-Print Network [OSTI]

    Hain, Thomas

    Automatic model complexity control . Most LVCSR systems are trained on large amounts of data. . ManyAutomatic Model Complexity Control Using Marginalized Discriminative Growth Functions X. Liu & M. J. J. F. Gales: Automatic Model Complexity Control Using Marginalized Discriminative Growth Functions

  3. Seismic margins and calibration of piping systems

    SciTech Connect (OSTI)

    Shieh, L.C.; Tsai, N.C.; Yang, M.S.; Wong, W.L.

    1985-01-01T23:59:59.000Z

    The Seismic Safety Margins Research Program (SSMRP) is a US Nuclear Regulatory Commission-funded, multiyear program conducted by Lawrence Livermore National Laboratory (LLNL). Its objective is to develop a complete, fully coupled analysis procedure for estimating the risk of earthquake-induced radioactive release from a commercial nuclear power plant and to determine major contributors to the state-of-the-art seismic and systems analysis process and explicitly includes the uncertainties in such a process. The results will be used to improve seismic licensing requirements for nuclear power plants. In Phase I of SSMRP, the overall seismic risk assessment methodology was developed and assembled. The application of this methodology to the seismic PRA (Probabilistic Risk Assessment) at the Zion Nuclear Power Plant has been documented. This report documents the method deriving response factors. The response factors, which relate design calculated responses to best estimate values, were used in the seismic response determination of piping systems for a simplified seismic probablistic risk assessment. 13 references, 31 figures, 25 tables.

  4. Global-local Structural Optimization Using Response Surfaces of Local Optimization Margins

    E-Print Network [OSTI]

    Neumaier, Arnold

    1 Global-local Structural Optimization Using Response Surfaces of Local Optimization Margins Boyang optimization problems. First, a large number of component optimizations for maximization of margins are performed. Response surface approximations (RSA) for maximum margins of component optimization

  5. asian monsoonal margin: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    model (MRCM) in simulating the West African monsoon. The MRCM is built on the Regional Climate Model, ... Im, Eun-Soon 242 From Marginal Deformations to Confinement HEP - Theory...

  6. adeep ocean margin: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    portions of Volume 146, Part 1 (Cascadia Margin), of the Proceedings of the Ocean Drilling Program. References to page numbers in the Initial Reports are preceded by "A1 22...

  7. Large-margin Gaussian mixture modeling for automatic speech recognition

    E-Print Network [OSTI]

    Chang, Hung-An, Ph. D. Massachusetts Institute of Technology

    2008-01-01T23:59:59.000Z

    Discriminative training for acoustic models has been widely studied to improve the performance of automatic speech recognition systems. To enhance the generalization ability of discriminatively trained models, a large-margin ...

  8. asian marginal seas: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    which somewhat surprisingly turned out to be classically stable. This was called marginal stability, as moving along one of its zero-modes, two of the stable modes turn...

  9. Voltage Collapse Margin Sensitivity Methods applied to the Power System

    E-Print Network [OSTI]

    Greene Ian Dobson Electrical & Computer Engineering Department University of Wisconsin-Madison 1415 Outages causing at least 75 MW reduction in loading margin . . . . . . . . . . . . . . . . . . . . . . . . . . 24 4.2 Radial Line Outages . . . . . . . . . . . . . . . . . . . . . . . 24 4.3 Non-radial Line

  10. Design of miniature floating platform for marginal fields

    E-Print Network [OSTI]

    Miao, Sha, S.M. Massachusetts Institute of Technology

    2013-01-01T23:59:59.000Z

    This thesis presents the design of a novel type of miniature floating offshore platforms with a heave plate attached at the keel, suitable for developing deep-water marginal fields. This design features a small displacement, ...

  11. Victorian Queer: Marginality and Money in Nineteenth-Century Literature 

    E-Print Network [OSTI]

    Choi, Jung Sun

    2013-05-01T23:59:59.000Z

    ..................................... 66? Victorian Eccentricity: The Identity of the Extra-Ordinary ..... 72? Valentine Blyth?s Eccentricity and Respectability at Risk ...... 77? In Defense of Eccentricity I: Victorian Man?s Economic Ability... as extraordinary. Valentine Blyth is a figure of queer marginality that Collins takes an interest in for fostering his notion of social toleration of differences. Jane Eyre is also a representative marginal figure, in this case one used by Charlotte Bront...

  12. Electromagnetic exploration of the Exmouth and Vřring rifted margins

    E-Print Network [OSTI]

    Myer, David Gerard

    2012-01-01T23:59:59.000Z

    on/off reservoir characterization, either regularizationgeneral characterization of on- versus off-reservoir, any of1D characterization tool. T peaks beneath the reservoir at

  13. Marginal Abatement Costs and Marginal Welfare Costs for Greenhouse Gas Emissions Reductions: Results from the EPPA Model

    E-Print Network [OSTI]

    Morris, Jennifer

    Marginal abatement cost (MAC) curves, relationships between tons of emissions abated and the CO2 (or GHG) price, have been widely used as pedagogic devices to illustrate simple economic concepts such as the benefits of ...

  14. Spatial and temporal distribution of Cu-Au-Mo ore deposits along the western Tethyan convergent margin: a link with the 3D

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Spatial and temporal distribution of Cu-Au-Mo ore deposits along the western Tethyan convergent systems and subduction dynamics are still partly unclear. Along the western Tethyan convergent margin ­ Paleocene phase characterized by a copper mineralization within the Balkan chain and in the Kaçkar mountains

  15. IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 29, NO. 1, JANUARY 2014 203 Distribution Locational Marginal Pricing for Optimal

    E-Print Network [OSTI]

    Oren, Shmuel S.

    (DSO) determines distribution locational marginal prices (DLMPs) by solving the social welfare, distribution locational marginal prices (DLMPs), distribution locational marginal pricing (DLMP), distribution at node . System locational marginal price (LMP) at time period for the node feeding the distribution grid

  16. Bioenergy crop productivity and potential climate change mitigation from marginal lands in the United States: An

    E-Print Network [OSTI]

    Zhuang, Qianlai

    ŔChampaign, Urbana, IL 61801, USA Abstract Growing biomass feedstocks from marginal lands is becoming an increasingly

  17. Prioritization and Implementation Plan for Collaborative Case Study on RPV Steels During Extended Service

    SciTech Connect (OSTI)

    Busby, Jeremy T [ORNL; Nanstad, Randy K [ORNL

    2010-02-01T23:59:59.000Z

    Nuclear power currently provides a significant fraction of the United States non-carbon emitting power generation. In future years, nuclear power must continue to generate a significant portion of the nation's electricity to meet the growing electricity demand, clean energy goals, and ensure energy independence. New reactors will be an essential part of the expansion of nuclear power. However, given limits on new builds imposed by economics and industrial capacity, the extended service of the existing fleet will also be required. Ensuring public safety and environmental protection is a prerequisite to all nuclear power plant operating and licensing decisions at all stages of reactor life. This includes the original license period of 40 years, the first license extension to 60 years, and certainly for any consideration of life beyond 60 years. For extended operating periods, it must be shown that adequate aging management programs are present or planned and that appropriate safety margins exist throughout the subsequent license renewal periods. Materials degradation can impact reactor reliability, availability, and potentially, safe operation. Components within a reactor must tolerate the harsh environment of high temperature water, stress, vibration, and/or an intense neutron field. Degradation of materials in this environment can lead to reduced performance, and in some cases, sudden failure. Clearly, understanding materials degradation and accounting for the effects of a reactor environment in operating and regulatory limits is essential. The Light Water Reactor Sustainability (LWRS) Program is designed to support the long-term operation (LTO) of existing domestic nuclear power generation with targeted collaborative research programs into areas beyond current short-term optimization opportunities. Within the LWRS program, two pathways have been initiated to perform research essential to informing relicensing decisions. The Materials Aging and Degradation Pathway is designed to help develop the scientific basis for understanding and predicting long-term environmental degradation behavior of materials in nuclear power plants and to provide data and methods to assess performance of systems, structures, and components essential to safe and sustained operation. The Risk-Informed Safety Margins Characterization Pathway (RISMC) seeks to merge fundamental scientific understanding of critical phenomenological conditions and deterministic predictions of nuclear power plant performance with risk-informed characterization tools. This will provide an integrated characterization of public safety margins in an optimization of nuclear safety, plant performance, and long-term asset management. Clearly, these two pathways have many synergies in goals and outcomes. The data and mechanisms generated in the Materials Pathway may feed into and mold efforts within the RISMC Pathway. In addition, insights from the characterization tools developed in RISMC tasks may inform materials testing needs and experiments. To demonstrate this potentially powerful interaction, a joint case study has been proposed and initiated. This document describes the initial planning for a coordinated study between the Materials and the RISMC Pathways. A brief description of each Pathway is presented along with a more detailed description of the needs and requirements of this collaborative task. A list of criteria for any case-study candidate are then listed, along with the rationale for choosing pressurized thermal shock as the prime candidate an inter-pathway collaboration. A proposed timeline and organization of future interactions on this subject area is also presented.

  18. Quench margin measurement in Nb3Sn quadrupole magnet

    SciTech Connect (OSTI)

    Kashikhin, V.V.; Bossert, R.; Chlachidze, G.; Lamm, M.; Novitski, I.; Zlobin, A.V.; /Fermilab

    2008-08-01T23:59:59.000Z

    One of the possible practical applications of the Nb{sub 3}Sn accelerator magnets is the LHC luminosity upgrade that involves replacing the present NbTi focusing quadrupoles in two high-luminosity interaction regions (IR). The IR magnets are exposed to strong radiation from the interaction point that requires a detailed investigation of the magnet operating margins under the expected radiation-induced heat depositions. This paper presents the results of simulation and measurement of quench limits and temperature margins for a Nb{sub 3}Sn model magnet using a special midplane strip heater.

  19. Engineering index : a metric for assessing margin in engineered systems

    SciTech Connect (OSTI)

    Dolin, Ronald M.

    2002-01-01T23:59:59.000Z

    Inherent in most engineered products is some measure of margin or over design. Engineers often do not retain design and performance knowledge so they can quantify uncertainties and estimate how much margin their product possesses. When knowledge-capture and quantification is neither possible, nor permissible, engineers rely on cultural lore and institutionalised practices to assign nominal conditions and tolerances. Often what gets lost along the way is design intent, product requirements, and their relationship with the product's intended application. The Engineering Index was developed to assess the goodness or quality of a product.

  20. Distance Metric Learning for Large Margin Nearest Neighbor Classification

    E-Print Network [OSTI]

    Weinberger, Kilian

    Distance Metric Learning for Large Margin Nearest Neighbor Classification Kilian Q. Weinberger}@cis.upenn.edu Abstract We show how to learn a Mahanalobis distance metric for k-nearest neigh- bor (kNN) classification in kNN classification--for example, achieving a test error rate of 1.3% on the MNIST handwritten digits

  1. Contaminated identities: Mercury and marginalization in Ghana's artisanal mining sector

    E-Print Network [OSTI]

    Singha, Kamini

    mining; Political ecology; Ecohealth; Environmental justice; Ghana 1. Introduction Artisanal and smallContaminated identities: Mercury and marginalization in Ghana's artisanal mining sector Petra and multifaceted policy problem that underlies the current conflictual aspects in the small-scale mining sector

  2. Large Margin Taxonomy Embedding with an Application to Document Categorization

    E-Print Network [OSTI]

    Weinberger, Kilian

    Large Margin Taxonomy Embedding with an Application to Document Categorization Kilian Weinberger that the topics are not just discrete classes, but are nodes in a complex taxonomy with rich inter-topic relationships. For example, web pages can be categorized into the Yahoo! web taxonomy or medical journals can

  3. Building a "Margin of Safety" Into Renewable Energy

    E-Print Network [OSTI]

    Building a "Margin of Safety" Into Renewable Energy Procurements: A Review of Experience purchasers and electricity regulators must confront the reality that signed renewable energy contracts will not always yield operational projects on the timeline given in the contracts themselves. Renewable energy

  4. The world's offshore continental margins contain vast reserves of

    E-Print Network [OSTI]

    Texas at Austin, University of

    The world's offshore continental margins contain vast reserves of gas hydrate, a frozen form of nat-seafloor geology. Increasing use of marine multicomponent seismic technol- ogy by oil and gas companies now allows seafloor strata over distances of several kilometers across the Green Canyon area of the Gulf of Mexico

  5. RADIO EMISSION FROM INSTABILITIES IN SPACE PLASMAS: MARGINAL STABILITY,

    E-Print Network [OSTI]

    Melrose, Don

    I t RADIO EMISSION FROM INSTABILITIES IN SPACE PLASMAS: MARGINAL STABILITY, 4TOCHASTIC GROWTH emission, hich is an indirect emission process first discussed by Ginaburg and Zhe/eznyakoe, 9581, and electron cyclotron maser emission (ECME), which is a direct emission ess first discussed in the presently

  6. Mesozoic evolution of northeast African shelf margin, Libya and Egypt

    SciTech Connect (OSTI)

    Aadland, R.K.; Schamel, S.

    1989-03-01T23:59:59.000Z

    The present tectonic features of the northeast African shelf margin between the Nile delta and the Gulf of Sirte are products of (1) precursory late Paleozoic basement arches, (2) early Mesozoic rifting and plate separation, and (3) Late Cretaceous structural inversion. The 250 km-wide and highly differentiated Mesozoic passive margin in the Western Desert region of Egypt is developed above a broad northwest-trending Late Carboniferous basement arch. In northeastern Libya, in contrast, the passive margin is restricted to just the northernmost Cyrenaica platform, where subsidence was extremely rapid in the Jurassic and Early Cretaceous. The boundary between the Western Desert basin and the Cyrenaica platform is controlled by the western flank of the basement arch. In the middle Cretaceous (100-90 Ma), subsidence accelerated over large areas of the Western desert, further enhancing a pattern of east-west-trending subbasins. This phase of rapid subsidence was abruptly ended about 80 Ma by the onset of structural inversion that uplifted the northern Cyrenaica shelf margin and further differentiated the Western Desert subbasin along a northeasterly trend.

  7. Sustainable bioenergy production from marginal lands in the US Midwest

    SciTech Connect (OSTI)

    Gelfand, Ilya; Sahajpal, Ritvik; Zhang, Xuesong; Izaurralde, Roberto C.; Gross, Katherine L.; Robertson, G. P.

    2013-01-24T23:59:59.000Z

    Long-term measurements of global warming impact coupled with spatially explicit modeling suggests that both climate benefits and the production potential of cellulosic crops grown on marginal lands of the US North Central region are substantial but will be insufficient to meet long-term biofuel needs.

  8. The Marginalized Particle Filter for Automotive Tracking Applications

    E-Print Network [OSTI]

    Schön, Thomas

    The Marginalized Particle Filter for Automotive Tracking Applications Andreas Eidehall Thomas B surroundings (lane geometry and the position of other vehicles), which is needed for intelligent automotive in a nonlinear estimation problem. For automotive tracking systems, these problems are traditionally handled

  9. The Marginalized Particle Filter for Automotive Tracking Applications

    E-Print Network [OSTI]

    Gustafsson, Fredrik

    1 The Marginalized Particle Filter for Automotive Tracking Applications Andreas Eidehall Thomas Sch surroundings (lane geometry and the position of other vehicles), which is needed for intelligent automotive in a nonlinear estimation problem. For automotive tracking systems, these problems are traditionally handled

  10. Quantification Of Margins And Uncertainties: A Bayesian Approach (full Paper)

    SciTech Connect (OSTI)

    Wallstrom, Timothy C [Los Alamos National Laboratory

    2008-01-01T23:59:59.000Z

    Quantification of Margins and Uncertainties (QMU) is 'a formalism for dealing with the reliability of complex technical systems, and the confidence which can be placed in estimates of that reliability.' (Eardleyet al, 2005). In this paper, we show how QMU may be interpreted in the framework of Bayesian statistical inference, using a probabilistic network. The Bayesian approach clarifies the probabilistic underpinnings of the formalism, and shows how the formalism can be used for deciSion-making.

  11. Another view of the Marginality Hypothesis: presidential influence in Congress

    E-Print Network [OSTI]

    Richard, Carl Mark

    1980-01-01T23:59:59.000Z

    to test the theory that electoral marginality affects the legislative behavior of House mem- bers. ilore scec'fically, it mey affect the degree to whir h represent- atives are responsive to their constituents. 4'he cuestion of why this happens leads us... studies done which deal with the numerous influences that can affect congressional behavior. Scholars tell us that among other things, a congressman's constituency, his House col- leagues, his party identification, and the executive branch, all in...

  12. Abstract--Although Locational Marginal Pricing (LMP) plays an important role in many restructured wholesale power

    E-Print Network [OSTI]

    Tesfatsion, Leigh

    1 Abstract-- Although Locational Marginal Pricing (LMP) plays an important role in many Terms-- Locational marginal pricing, wholesale power market, AC optimal power flow, DC optimal power congestion by means of Locational Marginal Pricing (LMP), i.e., the pricing of power by the location

  13. A STOCHASTIC PROGRAMMING APPROACH TO QUANTIFYING EFFECTS OF CONTINGENCIES ON LOCATIONAL MARGINAL PRICES

    E-Print Network [OSTI]

    Stankoviæ, Aleksandar

    on varia- tions of Locational Marginal Prices (LMPs) in restruc- tured power markets. The process: Locational marginal prices (LMPs), Un- certainty, Power system security, Optimization meth- ods, StochasticA STOCHASTIC PROGRAMMING APPROACH TO QUANTIFYING EFFECTS OF CONTINGENCIES ON LOCATIONAL MARGINAL

  14. Polished `Hoes', Dancehall Queens, and Sexual Freaks: Voices From the Margins of Caribbean Literature

    E-Print Network [OSTI]

    Zhou, Yaoqi

    Polished `Hoes', Dancehall Queens, and Sexual Freaks: Voices From the Margins of Caribbean is a book- length project that will examine multiply marginalized Caribbean women's narratives of resistance in the Caribbean, tends to reward normative behavior and marginalizes women who do not conform to set standards

  15. Fast Prediction of Loadability Margins by Constructing a Small-Signal Stability Boundary

    E-Print Network [OSTI]

    Cańizares, Claudio A.

    Fast Prediction of Loadability Margins by Constructing a Small-Signal Stability Boundary Based system. A novel approach is proposed in this paper for fast prediction of loadability margins to predict the loadability margins from any stable operating point along arbitrary loading directions through

  16. Characterization of Section 404 Permit Mitigation Plans, Coastal Margin and Associated Watersheds, Upper Texas Coast

    E-Print Network [OSTI]

    Conkey, April A.

    2010-01-14T23:59:59.000Z

    (Corps) is directed to enforce Section 404 of the Clean Water Act (1975 amendment) by administering permits for development. Furthermore, a 1990 Memorandum of Agreement (MOA) between the Corps and the U.S. Environmental Protection Agency (EPA) proposed a...

  17. Characterizing the marginal basis source energy and emissions associated with comfort cooling systems

    SciTech Connect (OSTI)

    Reindl, D.T.; Knebel, D.E.; Gansler, R.A. [Univ. of Wisconsin, Madison, WI (United States)

    1995-08-01T23:59:59.000Z

    A ten-story commercial office building located in Fort Worth, Texas, was used as a prototype to investigate the environmental impact associated with applying various electric and gas technologies for providing ventilation and comfort conditioning. The instantaneous (hourly) electrical and gas requirements demanded by the building were ``traced`` back to their source, the point where fuel is extracted from the ground The total energy consumed and emissions produced are quantified for both electric and gas technologies. On an annual basis, electric technologies had carbon dioxide emissions that were 20% to 26% lower when compared with the gas cooling technology. The gas cooling technology had lower total carbon monoxide emissions; however, after accounting for environmental oxidation of the carbon monoxide emissions, the gas cooling technology had an overall 24% to 35% greater oxide of carbon emission impact. The gas technology had a 19% to 25% lower oxide of nitrogen emission rate when compared with the electric technologies. The gas technology had a 3% to 15% lower annual total emission of sulfur dioxide compared to electric technologies. The primary reason for this is the absence of sulfur in the ``clean`` fuel assumed to be used by the gas technology (natural gas). The gas cooling technologies required 20% to 30% more energy to be extracted from the earth to provide the equivalent space conditioning for the prototypical office building when compared with the worst-and best-case electric technologies, respectively.

  18. RAVEN: a GUI and an Artificial Intelligence Engine in a Dynamic PRA Framework

    SciTech Connect (OSTI)

    C. Rabiti; D. Mandelli; A. Alfonsi; J. Cogliati; R. Kinoshita; D. Gaston; R. Martineau; C. Curtis

    2013-06-01T23:59:59.000Z

    Increases in computational power and pressure for more accurate simulations and estimations of accident scenario consequences are driving the need for Dynamic Probabilistic Risk Assessment (PRA) [1] of very complex models. While more sophisticated algorithms and computational power address the back end of this challenge, the front end is still handled by engineers that need to extract meaningful information from the large amount of data and build these complex models. Compounding this problem is the difficulty in knowledge transfer and retention, and the increasing speed of software development. The above-described issues would have negatively impacted deployment of the new high fidelity plant simulator RELAP-7 (Reactor Excursion and Leak Analysis Program) at Idaho National Laboratory. Therefore, RAVEN that was initially focused to be the plant controller for RELAP-7 will help mitigate future RELAP-7 software engineering risks. In order to accomplish this task, Reactor Analysis and Virtual Control Environment (RAVEN) has been designed to provide an easy to use Graphical User Interface (GUI) for building plant models and to leverage artificial intelligence algorithms in order to reduce computational time, improve results, and help the user to identify the behavioral pattern of the Nuclear Power Plants (NPPs). In this paper we will present the GUI implementation and its current capability status. We will also introduce the support vector machine algorithms and show our evaluation of their potentiality in increasing the accuracy and reducing the computational costs of PRA analysis. In this evaluation we will refer to preliminary studies performed under the Risk Informed Safety Margins Characterization (RISMC) project of the Light Water Reactors Sustainability (LWRS) campaign [3]. RISMC simulation needs and algorithm testing are currently used as a guidance to prioritize RAVEN developments relevant to PRA.

  19. RELAP-7 Beta Release: Summary of Capabilities

    SciTech Connect (OSTI)

    Richard C. Martineau; Hongbin Zhang; Haihua Zhao

    2014-12-01T23:59:59.000Z

    RELAP-7 is a nuclear systems safety analysis code being developed at the Idaho National Laboratory (INL). Building upon the decades of software development at the INL, we began the development of RELAP-7 in 2011 to support the Risk Informed Safety Margins Characterization (RISMC) Pathway. As part of this development, the first lines of RELAP-7 code were committed to the software revision control repository on November 7th, 2011. The overall design goal of RELAP-7 is to take advantage of the previous thirty years of advancements in computer architecture, software design, numerical methods, and physical models in order to provide capabilities needed for the RISMC methodology and to support nuclear power safety analysis. RELAP-7 is built using the INL’s modern scientific software development framework, MOOSE (Multi-physics Object Oriented Simulation Environment). MOOSE provides improved numerical calculations (including higher-order integration in both space and time, yielding converged second-order accuracy). The RELAP-7 code structure is based on multiple physical component models such as pipes, junctions, pumps, etc. Each component can have options for different fluid models such as single- and two-phase flow. This component-based and physics-based software architecture allows RELAP-7 to adopt different physical models for different applications. A relatively new two-phase hydrodynamic model, termed the “7-Equation model” for two phasic pressures, velocities, energies, and volumetric fraction, is incorporated into RELAP-7 for liquid-gas (water-steam) flows. This new model allows second-order integration because it is well-posed, which will reduce the numerical error associated with traditional systems analysis codes. In this paper, we provide a RELAP-7 capability list describing analysis features, range of applicability, and reactor components that will be available for the December 15th, 2014 beta release of the software.

  20. Mesozoic stratigraphy of northwestern Australian and northern Himalayan margins

    SciTech Connect (OSTI)

    Ogg, J.; Kopaskamerkel, D.C.

    1989-03-01T23:59:59.000Z

    The Mesozoic stratigraphies of the Himalayan margin, the Argo abyssal plain, and the Exmouth Plateau exhibit marked contrasts in their sedimentation histories. The sedimentary sequence on the northeastern Exmouth Plateau off Australia includes a Carnian to Rhaetian sequence of fluviodeltaic and marine clastics and carbonates, capped by a shallowing-upward sequence of platform carbonates overlain, with a major unconformity, by marine Aptian sediments deposited during rapid subsidence of the plateau. Argo abyssal plain basement is overlain by red-brown, bioturbated, inoceramid-rich quartzose claystones, bentonites, and quartz siltstones, dated by radiolarians and benthic foraminifera as lowest Cretaceous. This is overlain by red and green claystones and nannofossil chalks. The basal age indicates that sea-floor spreading began in the earliest Cretaceous, not Oxfordian as had been thought. In the Thakkola region of Nepal, uppermost Triassic through Lower Jurassic shelf and carbonate platform facies are capped by a ferruginous oolite deposit of latest Bathonian to earliest Callovian age. Sedimentation resumed in the middle Oxfordian with deposition of Berriasian( ) deep-water black organic-rich mud. Following a valanginian regression and progradation of terrigenous clastics, Aptian black shales were deposited. In geological studies of the northwestern Australian margin, the ubiquitous hiatus within the Callovian-Oxfordian has been termed the breakup unconformity. Existence of a similar-aged hiatus in the Himalayas on a margin which formed during the late Paleozoic, absence of any Jurassic on the Exmouth Plateau, and the apparent initiation of spreading in the Argo basin during the earliest Cretaceous suggest that this widespread unconformity is not associated with a continental breakup in these regions.

  1. Dangerous Liouville Wave -- exactly marginal but non-conformal deformation

    E-Print Network [OSTI]

    Chiu Man Ho; Yu Nakayama

    2008-07-26T23:59:59.000Z

    We give a non-trivially interacting field theory example of scale invariant but non-conformal field theory. The model is based on the exactly solvable Liouville field theory coupled with free scalars deformed by an exactly marginal operator. We show non-vanishing of the trace of the energy-momentum tensor by using the quantum Schwinger-Dyson equation for the Liouville field theory, which is a sophistication of the quantum higher equations of motion for the Liouville field theory introduced by Alyosha Zamolodchikov. Possibly dangerous implications for the super-critical string theory will be discussed.

  2. Seismic Safety Margins Research Program: a concluding look

    SciTech Connect (OSTI)

    Cummings, G.E.

    1984-01-01T23:59:59.000Z

    The Seismic Safety Margins Research Program (SSMRP) was started in 1978 with the goal of developing tools and data bases to compute the probability of earthquake - caused radioactive release from commercial nuclear power plants. These tools and data bases were to help NRC to assess seismic safety at nuclear plants. The methodology to be used was finalized in 1982 and applied to the Zion Nuclear Power Station. The SSMRP will be completed this year with the development of a more simplified method of analysis and a demonstration of its use on Zion. This simplified method is also being applied to a boiling-water-reactor, LaSalle.

  3. Margins in high temperature leak-before-break assessments

    SciTech Connect (OSTI)

    Budden, P.J.; Hooton, D.G.

    1997-04-01T23:59:59.000Z

    Developments in the defect assessment procedure R6 to include high-temperature mechanisms in Leak-before-Break arguments are described. In particular, the effect of creep on the time available to detect a leak and on the crack opening area, and hence leak rate, is discussed. The competing influence of these two effects is emphasized by an example. The application to Leak-before-Break of the time-dependent failure assessment diagram approach for high temperature defect assessment is then outlined. The approach is shown to be of use in assessing the erosion of margins by creep.

  4. Subsystem fragility: Seismic Safety Margins Research Program (Phase I)

    SciTech Connect (OSTI)

    Kennedy, R. P.; Campbell, R. D.; Hardy, G.; Banon, H.

    1981-10-01T23:59:59.000Z

    Seismic fragility levels of safety related equipment are developed for use in a seismic oriented Probabilistic Risk Assessment (PRA) being conducted as part of the Seismic Safety Margins Research Program (SSMRP). The Zion Nuclear Power Plant is being utilized as a reference plant and fragility descriptions are developed for specific and generic safety related equipment groups in Zion. Both equipment fragilities and equipment responses are defined in probabilistic terms to be used as input to the SSMRP event tree/fault tree models of the Zion systems. 65 refs., 14 figs., 11 tabs.

  5. Shock margin testing of a one-axis MEMS accelerometer.

    SciTech Connect (OSTI)

    Parson, Ted Blair; Tanner, Danelle Mary; Buchheit, Thomas Edward

    2008-07-01T23:59:59.000Z

    Shock testing was performed on a selected commercial-off-the-shelf - MicroElectroMechanical System (COTS-MEMS) accelerometer to determine the margin between the published absolute maximum rating for shock and the 'measured' level where failures are observed. The purpose of this testing is to provide baseline data for isolating failure mechanisms under shock and environmental loading in a representative device used or under consideration for use within systems and assemblies of the DOD/DOE weapons complex. The specific device chosen for this study was the AD22280 model of the ADXL78 MEMS Accelerometer manufactured by Analog Devices Inc. This study focuses only on the shock loading response of the device and provides the necessary data for adding influence of environmental exposure to the reliability of this class of devices. The published absolute maximum rating for acceleration in any axis was 4000 G for this device powered or unpowered. Results from this study showed first failures at 8000 G indicating a margin of error of two. Higher shock level testing indicated that an in-plane, but off-axis acceleration was more damaging than one in the sense direction.

  6. Seismic margin review of the Maine Yankee Atomic Power Station: Fragility analysis

    SciTech Connect (OSTI)

    Ravindra, M. K.; Hardy, G. S.; Hashimoto, P. S.; Griffin, M. J.

    1987-03-01T23:59:59.000Z

    This Fragility Analysis is the third of three volumes for the Seismic Margin Review of the Maine Yankee Atomic Power Station. Volume 1 is the Summary Report of the first trial seismic margin review. Volume 2, Systems Analysis, documents the results of the systems screening for the review. The three volumes are part of the Seismic Margins Program initiated in 1984 by the Nuclear Regulatory Commission (NRC) to quantify seismic margins at nuclear power plants. The overall objectives of the trial review are to assess the seismic margins of a particular pressurized water reactor, and to test the adequacy of this review approach, quantification techniques, and guidelines for performing the review. Results from the trial review will be used to revise the seismic margin methodology and guidelines so that the NRC and industry can readily apply them to assess the inherent quantitative seismic capacity of nuclear power plants.

  7. Maximum Margin Clustering for State Decomposition of Metastable Systems

    E-Print Network [OSTI]

    Wu, Hao

    2015-01-01T23:59:59.000Z

    When studying a metastable dynamical system, a prime concern is how to decompose the phase space into a set of metastable states. Unfortunately, the metastable state decomposition based on simulation or experimental data is still a challenge. The most popular and simplest approach is geometric clustering which is developed based on the classical clustering technique. However, the prerequisites of this approach are: (1) data are obtained from simulations or experiments which are in global equilibrium and (2) the coordinate system is appropriately selected. Recently, the kinetic clustering approach based on phase space discretization and transition probability estimation has drawn much attention due to its applicability to more general cases, but the choice of discretization policy is a difficult task. In this paper, a new decomposition method designated as maximum margin metastable clustering is proposed, which converts the problem of metastable state decomposition to a semi-supervised learning problem so that...

  8. A margin based approach to determining sample sizes via tolerance bounds.

    SciTech Connect (OSTI)

    Newcomer, Justin T.; Freeland, Katherine Elizabeth

    2013-09-01T23:59:59.000Z

    This paper proposes a tolerance bound approach for determining sample sizes. With this new methodology we begin to think of sample size in the context of uncertainty exceeding margin. As the sample size decreases the uncertainty in the estimate of margin increases. This can be problematic when the margin is small and only a few units are available for testing. In this case there may be a true underlying positive margin to requirements but the uncertainty may be too large to conclude we have sufficient margin to those requirements with a high level of statistical confidence. Therefore, we provide a methodology for choosing a sample size large enough such that an estimated QMU uncertainty based on the tolerance bound approach will be smaller than the estimated margin (assuming there is positive margin). This ensures that the estimated tolerance bound will be within performance requirements and the tolerance ratio will be greater than one, supporting a conclusion that we have sufficient margin to the performance requirements. In addition, this paper explores the relationship between margin, uncertainty, and sample size and provides an approach and recommendations for quantifying risk when sample sizes are limited.

  9. Rapid assessment of redevelopment potential in marginal oil fields, application to the cut bank field 

    E-Print Network [OSTI]

    Chavez Ballesteros, Luis Eladio

    2005-02-17T23:59:59.000Z

    Quantifying infill potential in marginal oil fields often involves several challenges. These include highly heterogeneous reservoir quality both horizontally and vertically, incomplete reservoir databases, considerably ...

  10. Comment on Thompson's "Complexity, Diminishing Marginal Returns and Serial Mesopotamian Fragmentation."

    E-Print Network [OSTI]

    White, Douglas R.

    Comment on Thompson's "Complexity, Diminishing Marginal Returns and Serial Mesopotamian and correlations of Thompson's Figure 5 and redraws the figure to highlight the feedback loop versus the large

  11. FRACTURING FLUID CHARACTERIZATION FACILITY

    SciTech Connect (OSTI)

    Subhash Shah

    2000-08-01T23:59:59.000Z

    Hydraulic fracturing technology has been successfully applied for well stimulation of low and high permeability reservoirs for numerous years. Treatment optimization and improved economics have always been the key to the success and it is more so when the reservoirs under consideration are marginal. Fluids are widely used for the stimulation of wells. The Fracturing Fluid Characterization Facility (FFCF) has been established to provide the accurate prediction of the behavior of complex fracturing fluids under downhole conditions. The primary focus of the facility is to provide valuable insight into the various mechanisms that govern the flow of fracturing fluids and slurries through hydraulically created fractures. During the time between September 30, 1992, and March 31, 2000, the research efforts were devoted to the areas of fluid rheology, proppant transport, proppant flowback, dynamic fluid loss, perforation pressure losses, and frictional pressure losses. In this regard, a unique above-the-ground fracture simulator was designed and constructed at the FFCF, labeled ''The High Pressure Simulator'' (HPS). The FFCF is now available to industry for characterizing and understanding the behavior of complex fluid systems. To better reflect and encompass the broad spectrum of the petroleum industry, the FFCF now operates under a new name of ''The Well Construction Technology Center'' (WCTC). This report documents the summary of the activities performed during 1992-2000 at the FFCF.

  12. Three-dimensional representations of salt-dome margins at four active strategic petroleum reserve sites.

    SciTech Connect (OSTI)

    Rautman, Christopher Arthur; Stein, Joshua S.

    2003-01-01T23:59:59.000Z

    Existing paper-based site characterization models of salt domes at the four active U.S. Strategic Petroleum Reserve sites have been converted to digital format and visualized using modern computer software. The four sites are the Bayou Choctaw dome in Iberville Parish, Louisiana; the Big Hill dome in Jefferson County, Texas; the Bryan Mound dome in Brazoria County, Texas; and the West Hackberry dome in Cameron Parish, Louisiana. A new modeling algorithm has been developed to overcome limitations of many standard geological modeling software packages in order to deal with structurally overhanging salt margins that are typical of many salt domes. This algorithm, and the implementing computer program, make use of the existing interpretive modeling conducted manually using professional geological judgement and presented in two dimensions in the original site characterization reports as structure contour maps on the top of salt. The algorithm makes use of concepts of finite-element meshes of general engineering usage. Although the specific implementation of the algorithm described in this report and the resulting output files are tailored to the modeling and visualization software used to construct the figures contained herein, the algorithm itself is generic and other implementations and output formats are possible. The graphical visualizations of the salt domes at the four Strategic Petroleum Reserve sites are believed to be major improvements over the previously available two-dimensional representations of the domes via conventional geologic drawings (cross sections and contour maps). Additionally, the numerical mesh files produced by this modeling activity are available for import into and display by other software routines. The mesh data are not explicitly tabulated in this report; however an electronic version in simple ASCII format is included on a PC-based compact disk.

  13. ENHANCED SEVERE TRANSIENT ANALYSIS FOR PREVENTION TECHNICAL PROGRAM PLAN

    SciTech Connect (OSTI)

    Gougar, Hans [Idaho National Laboratory

    2014-09-01T23:59:59.000Z

    This document outlines the development of a high fidelity, best estimate nuclear power plant severe transient simulation capability that will complement or enhance the integral system codes historically used for licensing and analysis of severe accidents. As with other tools in the Risk Informed Safety Margin Characterization (RISMC) Toolkit, the ultimate user of Enhanced Severe Transient Analysis and Prevention (ESTAP) capability is the plant decision-maker; the deliverable to that customer is a modern, simulation-based safety analysis capability, applicable to a much broader class of safety issues than is traditional Light Water Reactor (LWR) licensing analysis. Currently, the RISMC pathway’s major emphasis is placed on developing RELAP-7, a next-generation safety analysis code, and on showing how to use RELAP-7 to analyze margin from a modern point of view: that is, by characterizing margin in terms of the probabilistic spectra of the “loads” applied to systems, structures, and components (SSCs), and the “capacity” of those SSCs to resist those loads without failing. The first objective of the ESTAP task, and the focus of one task of this effort, is to augment RELAP-7 analyses with user-selected multi-dimensional, multi-phase models of specific plant components to simulate complex phenomena that may lead to, or exacerbate, severe transients and core damage. Such phenomena include: coolant crossflow between PWR assemblies during a severe reactivity transient, stratified single or two-phase coolant flow in primary coolant piping, inhomogeneous mixing of emergency coolant water or boric acid with hot primary coolant, and water hammer. These are well-documented phenomena associated with plant transients but that are generally not captured in system codes. They are, however, generally limited to specific components, structures, and operating conditions. The second ESTAP task is to similarly augment a severe (post-core damage) accident integral analyses code with high fidelity simulations that would allow investigation of multi-dimensional, multi-phase containment phenomena that are only treated approximately in established codes.

  14. The Case for Increasing Enrollment and Leveraging Marginal Costs: CSUN Case Study

    E-Print Network [OSTI]

    Shubin, Carol

    The Case for Increasing Enrollment and Leveraging Marginal Costs: CSUN Case Study H. Hellenbrand1 will estimate the marginal cost for increasing enrollment from a theoretical point of view. This analysis will use data from the IPEDS data base and formulae for replacement costs suggested by the Legislative

  15. Faunal responses to oxygen gradients on the Pakistan margin: A comparison of foraminiferans, macrofauna and megafauna

    E-Print Network [OSTI]

    Levin, Lisa

    Faunal responses to oxygen gradients on the Pakistan margin: A comparison of foraminiferans Oxygen minimum zone Benthos Arabian Sea Biodiversity Deep sea a b s t r a c t The Pakistan Margin where oxygen levels were lowest. The rarity of larger animals between 300 and 700 m on the Pakistan

  16. ELSEVIER Geomorphology 14 (1995) 109-121 Hypsometric forcing of stagnant ice margins: Pleistocene valley

    E-Print Network [OSTI]

    Small, Eric

    1995-01-01T23:59:59.000Z

    ELSEVIER Geomorphology 14 (1995) 109-121 Hypsometric forcing of stagnant ice margins: Pleistocene December 1994 Abstract Topographic and sedimentological evidence indicates that stagnant ice conditions position for a stagnant ice margin to develop during valley glacier retreat. In the first model, valley

  17. The Continental Margin is a Key Source of Iron to the HNLC North Pacific Ocean

    E-Print Network [OSTI]

    The Continental Margin is a Key Source of Iron to the HNLC North Pacific Ocean Phoebe J. Lam1 concentrations in the upper 500m of the Western Subarctic Pacific, an iron-limited High Nutrient Low Chlorophyll a key source of bioavailable Fe to the HNLC North Pacific. Keywords: iron, continental margin, HNLC 1

  18. Improvement of LWR thermal margins by introducing thorium Cheuk Wah Lau a,*, Christophe Demazire a

    E-Print Network [OSTI]

    Demazičre, Christophe

    Improvement of LWR thermal margins by introducing thorium Cheuk Wah Lau a,*, Christophe Demazičre Keywords: Thorium PWR Thermal margins Transport calculations a b s t r a c t The use of thorium pins contain a mixture of uranium and thorium oxides, while a few fuel pins contain a mixture between

  19. Ranking Structured Documents: A Large Margin Based Approach for Patent Prior Art Search

    E-Print Network [OSTI]

    Gomes, Carla P.

    Ranking Structured Documents: A Large Margin Based Approach for Patent Prior Art Search Yunsong Guo propose an approach for automatically rank- ing structured documents applied to patent prior art search. Our model, SVM Patent Ranking (SVMP R) incorporates margin constraints that di- rectly capture

  20. Correlation of PDN Impedance with Jitter and Voltage Margin for High Speed Channels

    E-Print Network [OSTI]

    Swaminathan, Madhavan

    Correlation of PDN Impedance with Jitter and Voltage Margin for High Speed Channels Vishal Laddha vishal.laddha@gatech.edu, madhavan.swaminathan@ece.gatech.edu Abstract: Timing margin (jitter and plane cutouts is a major source of jitter and noise introduced by the package and the printed circuit

  1. Evaluation of Travis Peak gas reservoirs, west margin of the East Texas Basin

    E-Print Network [OSTI]

    Li, Yamin

    2009-05-15T23:59:59.000Z

    for basinward extension of Travis Peak gas production along the west margin of the East Texas Basin. Along the west margin of the East Texas Basin, southeast-trending Travis Peak sandstones belts were deposited by the Ancestral Red River fluvial-deltaic system...

  2. Structural development of the western margins of the Sirte basin

    SciTech Connect (OSTI)

    Anketell, J.M.; Kumati, S.M.

    1988-08-01T23:59:59.000Z

    The Sirte basin, situated in north-central Libya, is a broad, northwest-trending embayment comprising a complex of small horsts and grabens. The basin was initiated in the early Cretaceous by collapse of the Tibisti-Sirte arch and underwent further faulting, notably in Late Cretaceous to early paleocene time and during the latter part of the Eocene. Throughout the greater part of the region, faults are obscured by Neogene cover; however, west of the Dahra-Hofra horst they are exposed. The last major phase of faulting in this region is late Lutetian to early Priabonian in age with minor reactivation during Oligocene and Miocene time. A phase of intra-Lutetian movement is also recognized. Following deposition of open marine limestones and chalks in the early Lutetian, the region was tilted toward the east-northeast with emergence and development of a complex system of east-flowing drainage channels which sculpted the emerging surface. The channels are wide but shallow, ranging up to 2 km wide and 10 m deep. This phase of movement and intraformational erosion was terminated by slow subsidence and/or transgression with development of restricted marine shales. The late Eocene faults which delineate the western margin of the Dahra horst throw down to the west and display a complex en echelon pattern. They are interpreted in terms of Riedel shear mechanics related to oblique-slip reactivation of basement shears. Counterclockwise orientation of the shears indicates they formed in response to sinistral slip.

  3. Seismic Safety Margins Research Program. Phase I, final report - overview

    SciTech Connect (OSTI)

    Smith, P. D.; Dong, R. G.; Bernreuter, D. L.; Bohn, M. P.; Chuang, T. Y.; Cummings, G. E.; Johnson, J. J.; Mensing, R. W.; Wells, J. E.

    1981-03-06T23:59:59.000Z

    The Seismic Safety Margins Research Program (SSMRP) is a multiyear, multiphase program whose overall objective is to develop improved methods for seismic safety assessments of nuclear power plants, using a probabilistic computational procedure. The program is being carried out at the Lawrence Livermore National Laboratory and is sponsored by the US Nuclear Regulatory Commission, Office of Nuclear Regulatory Research. Phase I of the SSMRP was successfully completed in January 1981: A probabilistic computational procedure for the seismic risk assessment of nuclear power plants has been developed and demonstrated. The methodology is implemented by three computer programs: HAZARD, which assesses the seismic hazard at a given site, SMACS, which computes in-structure and subsystem seismic responses, and SEISIM, which calculates system failure probabilities and radioactive release probabilities, given (1) the response results of SMACS, (2) a set of event trees, (3) a family of fault trees, (4) a set of structural and component fragility descriptions, and (5) a curve describing the local seismic hazard. The practicality of this methodology was demonstrated by computing preliminary release probabilities for Unit 1 of the Zion Nuclear Power Plant north of Chicago, Illinois. Studies have begun aimed at quantifying the sources of uncertainty in these computations. Numerous side studies were undertaken to examine modeling alternatives, sources of error, and available analysis techniques. Extensive sets of data were amassed and evaluated as part of projects to establish seismic input parameters and to produce the fragility curves. 66 refs., 29 figs., 10 tabs.

  4. Development of a hybrid margin angle controller for HVDC continuous operation

    SciTech Connect (OSTI)

    Sato, M. [Kansai Electric Power Co., Osaka (Japan)] [Kansai Electric Power Co., Osaka (Japan); Yamaji, K. [Shikoku Electric Power Co., Takamatsu (Japan)] [Shikoku Electric Power Co., Takamatsu (Japan); Sekita, M. [Electric Power Development Co., Tokyo (Japan)] [Electric Power Development Co., Tokyo (Japan); Amano, M.; Nishimura, M.; Konishi, H.; Oomori, T. [Hitachi, Ltd. (Japan)] [Hitachi, Ltd. (Japan)

    1996-11-01T23:59:59.000Z

    The objective of this paper is to present a new hybrid margin angle control method for HVDC continuous operation under AC system fault conditions. For stable continuous operation of HVDC systems, the margin angle controller must be designed to maintain the necessary margin angle to avoid commutation failures. The proposed method uses the open loop margin angle controller (MAC) as the basic controller, and adds output from the closed loop MAC to correct the control angle. A fast voltage detection algorithm is used for open loop control, and margin angle reference correction using harmonics detection for closed loop control are also developed. The combination of open and closed loop control provides quick responses when faults occur with stable and speedy recovery after fault clearance. The effectiveness of the developed controller is confirmed through EMTP digital simulations and also with the experiments using an analogue simulator.

  5. Performance Characterization

    Broader source: Energy.gov [DOE]

    Performance characterization efforts within the SunShot Systems Integration activities focus on collaborations with U.S. solar companies to:

  6. Benthic biological and biogeochemical patterns and processes across an oxygen minimum zone (Pakistan margin, NE Arabian Sea)

    E-Print Network [OSTI]

    Levin, Lisa

    (Pakistan margin, NE Arabian Sea) Gregory L. Cowie a,Ă, Lisa A. Levin b a The Sir John Murray Laboratories), and organic matter (OM) availability on benthic communities and processes across the Pakistan Margin

  7. Thermal segmentation along the N. EcuadorS. Colombia margin (14N): Prominent influence of sedimentation rate in the trench

    E-Print Network [OSTI]

    Vallée, Martin

    Thermal segmentation along the N. Ecuador­S. Colombia margin (1­4°N): Prominent influence Ecuador Colombia Along the deformation front of the North Ecuador­South Colombia (NESC) margin, both

  8. Effect of post-implant edema on prostate brachytherapy treatment margins

    SciTech Connect (OSTI)

    Reed, Daniel R. [Radiation Oncology, Arizona Oncology Services, Phoenix, AZ (United States); Department of Radiation Oncology, Puget Sound Health Care System, Department of Veterans Affairs, Seattle, WA (United States); Department of Radiation Oncology, University of Washington, Seattle, WA (United States); Wallner, Kent [Department of Radiation Oncology, Puget Sound Health Care System, Department of Veterans Affairs, Seattle, WA (United States); Department of Radiation Oncology, University of Washington, Seattle, WA (United States); Radiation Oncology, Group Health Cooperative, Seattle, WA (United States); Ford, Eric [Department of Radiation Oncology, University of Washington, Seattle, WA (United States); Mueller, Amy [Department of Radiation Oncology, Puget Sound Health Care System, Department of Veterans Affairs, Seattle, WA (United States); Merrick, Gregory [Schiffler Cancer Center, Wheeling, WV (United States); Maki, Jeffrey [Department of Diagnostic Radiology, Puget Sound Health Care System, Department of Veterans Affairs, Seattle, WA (United States); Sutlief, Steven [Department of Radiation Oncology, Puget Sound Health Care System, Department of Veterans Affairs, Seattle, WA (United States); Department of Radiation Oncology, University of Washington, Seattle, WA (United States); Butler, Wayne [Schiffler Cancer Center, Wheeling, WV (United States)

    2005-12-01T23:59:59.000Z

    Purpose: To determine if postimplant prostate brachytherapy treatment margins calculated on Day 0 differ substantially from those calculated on Day 30. Methods: Thirty patients with 1997 American Joint Commission on Cancer clinical stage T1-T2 prostatic carcinoma underwent prostate brachytherapy with I-125 prescribed to 144 Gy. Treatment planning methods included using loose seeds in a modified peripheral loading pattern and treatment margins (TMs) of 5-8 mm. Postimplant plain radiographs, computed tomography scans, and magnetic resonance scans were obtained 1-4 hours after implantation (Day 0). A second set of imaging studies was obtained at 30 days after implantation (Day 30) and similarly analyzed. Treatment margins were measured as the radial distance in millimeters from the prostate edge to the 100% isodose line. The TMs were measured and tabulated at 90{sup o} intervals around the prostate periphery at 0.6-cm intervals. Each direction was averaged to obtain the mean anterior, posterior, left, and right margins. Results: The mean overall TM increased from 2.6 mm ({+-}2.3) on Day 0 to 3.5 mm ({+-}2.4) on Day 30. The mean anterior margin increased from 1.2 mm on Day 0 to 1.8 mm on Day 30. The posterior margin increased from 1.2 mm on Day 0 to 2.8 mm on Day 30. The lateral treatment margins increased most over time, with mean right treatment margin increasing from 3.9 mm on Day 0 to 4.7 mm on Day 30. Conclusion: Treatment margins appear to be durable in the postimplant period, with a clinically insignificant increase from Day 0 to Day 30.

  9. 880 IEEE TRANSACTIONS ON POWER SYSTEMS, VOL. 19, NO. 2, MAY 2004 Marginal Loss Modeling in LMP Calculation

    E-Print Network [OSTI]

    McCalley, James D.

    in the locational marginal pricing approach recently deployed in the ISO New England (ISO-NE) standard market design) [1] proposes location-based marginal pricing (LMP) together with firm transmission rights (FTR, Senior Member, IEEE Abstract--This paper discusses the pricing of marginal trans- mission network losses

  10. Abstract--The capability to deal effectively with the uncer-tainty associated with locational marginal prices (LMPs) in con-

    E-Print Network [OSTI]

    , standard market design, locational marginal prices, fixed/firm/financial transmission rights, transmission.S. electricity sector. The proposal uses locational marginal prices (LMPs) to identify congestion situations marginal prices (LMPs) in con- gestion management schemes requires the development of ap- propriate

  11. Abstract--This paper introduces the fundamental concept of locational marginal price (LMP) in the electricity markets, and

    E-Print Network [OSTI]

    Fu, Yong

    1 Abstract--This paper introduces the fundamental concept of locational marginal price (LMP Terms-- Congestion charge, locational marginal price, LMP difference, nodal price. NOMENCLATURE ba) are to implement the locational marginal pricing [1-3]. Under Standard Market Design (SMD) issued by FERC in July

  12. Experimental validation of the van Herk margin formula for lung radiation therapy

    SciTech Connect (OSTI)

    Ecclestone, Gillian; Heath, Emily [Department of Physics, Ryerson University, Toronto, Ontario M5B 2K3 (Canada)] [Department of Physics, Ryerson University, Toronto, Ontario M5B 2K3 (Canada); Bissonnette, Jean-Pierre [Department of Radiation Oncology, University of Toronto, Toronto, Ontario M5G 2M9, Canada and Department of Radiation Physics, Princess Margaret Cancer Centre, Toronto, Ontario M5G 2M9 (Canada)] [Department of Radiation Oncology, University of Toronto, Toronto, Ontario M5G 2M9, Canada and Department of Radiation Physics, Princess Margaret Cancer Centre, Toronto, Ontario M5G 2M9 (Canada)

    2013-11-15T23:59:59.000Z

    Purpose: To validate the van Herk margin formula for lung radiation therapy using realistic dose calculation algorithms and respiratory motion modeling. The robustness of the margin formula against variations in lesion size, peak-to-peak motion amplitude, tissue density, treatment technique, and plan conformity was assessed, along with the margin formula assumption of a homogeneous dose distribution with perfect plan conformity.Methods: 3DCRT and IMRT lung treatment plans were generated within the ORBIT treatment planning platform (RaySearch Laboratories, Sweden) on 4DCT datasets of virtual phantoms. Random and systematic respiratory motion induced errors were simulated using deformable registration and dose accumulation tools available within ORBIT for simulated cases of varying lesion sizes, peak-to-peak motion amplitudes, tissue densities, and plan conformities. A detailed comparison between the margin formula dose profile model, the planned dose profiles, and penumbra widths was also conducted to test the assumptions of the margin formula. Finally, a correction to account for imperfect plan conformity was tested as well as a novel application of the margin formula that accounts for the patient-specific motion trajectory.Results: The van Herk margin formula ensured full clinical target volume coverage for all 3DCRT and IMRT plans of all conformities with the exception of small lesions in soft tissue. No dosimetric trends with respect to plan technique or lesion size were observed for the systematic and random error simulations. However, accumulated plans showed that plan conformity decreased with increasing tumor motion amplitude. When comparing dose profiles assumed in the margin formula model to the treatment plans, discrepancies in the low dose regions were observed for the random and systematic error simulations. However, the margin formula respected, in all experiments, the 95% dose coverage required for planning target volume (PTV) margin derivation, as defined by the ICRU; thus, suitable PTV margins were estimated. The penumbra widths calculated in lung tissue for each plan were found to be very similar to the 6.4 mm value assumed by the margin formula model. The plan conformity correction yielded inconsistent results which were largely affected by image and dose grid resolution while the trajectory modified PTV plans yielded a dosimetric benefit over the standard internal target volumes approach with up to a 5% decrease in the V20 value.Conclusions: The margin formula showed to be robust against variations in tumor size and motion, treatment technique, plan conformity, as well as low tissue density. This was validated by maintaining coverage of all of the derived PTVs by 95% dose level, as required by the formal definition of the PTV. However, the assumption of perfect plan conformity in the margin formula derivation yields conservative margin estimation. Future modifications to the margin formula will require a correction for plan conformity. Plan conformity can also be improved by using the proposed trajectory modified PTV planning approach. This proves especially beneficial for tumors with a large anterior–posterior component of respiratory motion.

  13. Analysis of post-Kyoto CO? emissions trading using marginal abatement curves

    E-Print Network [OSTI]

    Ellerman, A. Denny.; Decaux, Annelčne.

    Marginal abatement curves (MACs) are often used heuristically to demonstrate the advantages of emissions trading. In this paper, the authors derive MACs from EPPA, the MIT Joint Program's computable general equilibrium ...

  14. Storytelling on the margins : a theoretical framework for imagining a fashion innovation center in Tuscany

    E-Print Network [OSTI]

    Mills, Alexa (Alexa Timeaus)

    2008-01-01T23:59:59.000Z

    The importance of the margin has long been deemed important in creative processes. At both the level of the individual and the level of the city, research shows that creativity tends to flourish on the philosophical and ...

  15. 6Seismic stratigraphy and subsidence history of the United Arab Emirates (UAE) rifted margin

    E-Print Network [OSTI]

    Watts, A. B. "Tony"

    6Seismic stratigraphy and subsidence history of the United Arab Emirates (UAE) rifted margin). The United Arab Emirates (UAE) is underlain by a deep sedimentary basin which comprises a lower rifted

  16. Understanding the Zongo : processes of socio-spatial marginalization in Ghana

    E-Print Network [OSTI]

    Williamson, Emily Anne

    2014-01-01T23:59:59.000Z

    The spatial processes of marginalization and ghettoization have been described, labeled, and theorized extensively in the United States and Europe, yet there has been little research dedicated to these processes in the ...

  17. Mesozoic evolution of the northeast African shelf margin, Libya and Egypt

    SciTech Connect (OSTI)

    Aadland, R.K.; Schamel, S.

    1988-08-01T23:59:59.000Z

    The present tectonic features of the northeast African shelf margin between the Nile delta and the Gulf of Sirte are products of (1) precursory late Paleozoic basement arches, (2) early Mesozoic rifting and plate separation, and (3) Late Cretaceous structural inversion. Isopach and structural maps, cross sections, and sediment accumulation (geohistory) curves constructed from 89 wells in the Western Desert and 27 wells in northeastern Libya depict the structural and stratigraphic development of the northeast African shelf margin.

  18. Marginal Cost of Steam and Power from Cogeneration Systems Using a Rational Value-Allocation Procedure

    E-Print Network [OSTI]

    Kumana, J. D.; Al-Gwaiz, M. M.

    2004-01-01T23:59:59.000Z

    that their approach gives more realistic values for marginal steam and power costs, and yields superior results compared to conventional methods. It is recommended as the first step before energy optimization analysis for the process is undertaken. REFERENCES... companies operate in either modes 1a or 2a, as electric utility companies are loathe to purchase surplus power from a cogenerator unless it is priced substantially below the utility?s own cheapest marginal cost of production. Usually, the cogenerator...

  19. Wintertime pytoplankton bloom in the Subarctic Pacific supportedby continental margin iron

    SciTech Connect (OSTI)

    Lam, Phoebe J.; Bishop, James K.B.; Henning, Cara C.; Marcus,Matthew A.; Waychunas, Glenn A.; Fung, Inez

    2004-06-08T23:59:59.000Z

    Heightened biological activity was observed in February 1996in the high-nutrient low-chlorophyll (HNLC) subarctic North PacificOcean, a region that is thought to beiron-limited. Here we provideevidence supporting the hypothesis that Ocean Station Papa (OSP) in thesubarctic Pacific received a lateral supply of particulate iron from thecontinental margin off the Aleutian Islands in the winter, coincidentwith the observed biological bloom. Synchrotron X-ray analysis was usedto describe the physical form, chemistry, and depth distributions of ironin size fractionated particulate matter samples. The analysis revealsthat discrete micron-sized iron-rich hotspots are ubiquitous in the upper200m at OSP, more than 900km from the closest coast. The specifics of thechemistry and depth profiles of the Fe hot spots trace them to thecontinental margins. We thus hypothesize that iron hotspots are a markerfor the delivery of iron from the continental margin. We confirm thedelivery of continental margin iron to the open ocean using an oceangeneral circulation model with an iron-like tracer source at thecontinental margin. We suggest that iron from the continental marginstimulated a wintertime phytoplankton bloom, partially relieving the HNLCcondition.

  20. Hot roller embossing system equipped with a temperature margin-based controller

    SciTech Connect (OSTI)

    Kim, Seyoung, E-mail: seyoungkim@kimm.re.kr; Son, Youngsu; Lee, Sunghee; Ham, Sangyong; Kim, Byungin [Department of Robotics and Mechatronics, Korea Institute of Machinery and Materials (KIMM), Daejeon (Korea, Republic of)

    2014-08-15T23:59:59.000Z

    A temperature control system was proposed for hot roller embossing. The roll surface was heated using induction coils and cooled with a circulating chilled water system. The temperature of the roll surface was precisely controlled by a temperature margin-based control algorithm that we developed. Implementation of the control system reduced deviations in the roll surface temperature to less than ±2?°C. The tight temperature control and the ability to rapidly increase and decrease the roll temperature will allow optimum operating parameters to be developed quickly. The temperature margin-based controller could also be used to optimize the time course of electrical power and shorten the cooling time by choosing an appropriate temperature margin, possibly for limited power consumption. The chiller-equipped heating roll with the proposed control algorithm is expected to decrease the time needed to determine the optimal embossing process.

  1. JOURNAL OF GEOPHYSICAL RESEARCH, VOL. ???, XXXX, DOI:10.1029/, Deformation-induced melting in the margins of the1

    E-Print Network [OSTI]

    in the margins of the1 West-Antarctic ice streams2 Jenny Suckale 1 , John D. Platt 2 , Thibaut Perol 2 and James for publication. #12;X - 2 SUCKALE, PLATT, PEROL AND RICE: MELTING IN ICE-STREAM MARGINS Abstract. Flow of glacial 16, 2014, 10:19am D R A F T #12;SUCKALE, PLATT, PEROL AND RICE: MELTING IN ICE-STREAM MARGINS X - 3 1

  2. Quantification of the Variability of Diaphragm Motion and Implications for Treatment Margin Construction

    SciTech Connect (OSTI)

    Rit, Simon; Herk, Marcel van; Zijp, Lambert [Department of Radiation Oncology, The Netherlands Cancer Institute-Antoni van Leeuwenhoek Hospital, Amsterdam (Netherlands); Sonke, Jan-Jakob, E-mail: j.sonke@nki.nl [Department of Radiation Oncology, The Netherlands Cancer Institute-Antoni van Leeuwenhoek Hospital, Amsterdam (Netherlands)

    2012-03-01T23:59:59.000Z

    Purpose: To quantify the variability of diaphragm motion during free-breathing radiotherapy of lung patients and its effect on treatment margins to account for geometric uncertainties. Methods and Materials: Thirty-three lung cancer patients were analyzed. Each patient had 5-19 cone-beam scans acquired during different treatment fractions. The craniocaudal position of the diaphragm dome on the same side as the tumor was tracked over 2 min in the projection images, because it is both easily visible and a suitable surrogate to study the variability of the tumor motion and its impact on treatment margins. Intra-acquisition, inter-acquisition, and inter-patient variability of the respiratory cycles were quantified separately, as were the probability density functions (PDFs) of the diaphragm position over each cycle, each acquisition, and each patient. Asymmetric margins were simulated using each patient PDF and compared to symmetric margins computed from a margin recipe. Results: The peak-to-peak amplitude variability (1 SD) was 3.3 mm, 2.4 mm, and 6.1 mm for the intra-acquisition, inter-acquisition, and inter-patient variability, respectively. The average PDF of each cycle was similar to the sin{sup 4} function but the PDF of each acquisition was closer to a skew-normal distribution because of the motion variability. Despite large interfraction baseline variability, the PDF of each patient was generally asymmetric with a longer end-inhale tail because the end-exhale position was more stable than the end-inhale position. The asymmetry of the PDF required asymmetric margins around the time-averaged position to account for the position uncertainty but the average difference was 1.0 mm (range, 0.0-4.4 mm) for a sharp penumbra and an idealized online setup correction protocol. Conclusion: The respiratory motion is more irregular during the fractions than between the fractions. The PDF of the respiratory motion is asymmetrically distributed. Both the intra-acquisition variability and the PDF asymmetry have a limited impact on dose distributions and inferred margins. The use of a margin recipe to account for respiratory motion with an estimate of the average motion amplitude was adequate in almost all patients.

  3. Engineering salt-tolerant Brassica plants: Characterization of yield and seed oil

    E-Print Network [OSTI]

    Blumwald, Eduardo

    Engineering salt-tolerant Brassica plants: Characterization of yield and seed oil quality of the these plants was only marginally affected by the high salt concen- tration. Moreover, seed yields and the seed that with a combination of breeding and transgenic plants it could be possible to produce salt-tolerant crops with far

  4. Mapping the Potential for Biofuel Production on Marginal Lands: Differences in Definitions, Data and Models across Scales

    E-Print Network [OSTI]

    Lewis, Sarah M

    2014-01-01T23:59:59.000Z

    D. Land availability for biofuel production. Environ. Sci.of land available for biofuel production. Environ. Sci.so marginal land for biofuel crops is limited. Energy Policy

  5. Why Have Bank Interest Margins Been so High in Indonesia since the 1997/1998 Financial Crisis?

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    this fact. Demirgüç- Kunt and Huizinga (1998) show that the average margins of Indonesian banks for the 1988

  6. Marginal costs of freeway traffic congestion with on-road pollution exposure externality

    E-Print Network [OSTI]

    Bertini, Robert L.

    Marginal costs of freeway traffic congestion with on-road pollution exposure externality Alexander August 2012 Received in revised form 6 March 2013 Accepted 23 September 2013 Keywords: External costs Traffic congestion On-road In-vehicle Pollution exposure Vehicle emissions a b s t r a c t The health cost

  7. Leverage and Beliefs: Personal Experience and Risk Taking in Margin Lending*

    E-Print Network [OSTI]

    Straight, Aaron

    Leverage and Beliefs: Personal Experience and Risk Taking in Margin Lending* Peter Koudijs+ Hans of financial distress to address this question. An investor syndicate speculating in English stocks went times, and declining when asset prices fall (Adrian and Shin 2010). For example, when the stock market

  8. Separation and Volatility of Locational Marginal Prices in Restructured Wholesale Power Markets

    E-Print Network [OSTI]

    Tesfatsion, Leigh

    1 Separation and Volatility of Locational Marginal Prices in Restructured Wholesale Power Markets (LMPs) in an ISO-managed restructured wholesale power market operating over an AC transmission grid-determining) generation companies induce correlations among neighboring LMPs. Index Terms--Restructured wholesale power

  9. The marginal cost of carbon abatement from planting street trees in New York City

    E-Print Network [OSTI]

    Fried, Jeremy S.

    cooling and heating energy consumption of buildings through the process of transpiration, shadingAnalysis The marginal cost of carbon abatement from planting street trees in New York City Kent F Buford Avenue, St. Paul, MN 55108, United States d Yale University, 195 Prospect Street, New Haven, CT

  10. Proceedings of the Combustion Institute, Volume 28, 2000/pp. 757763 EXPERIMENTAL DETERMINATION OF THE STABILITY MARGIN

    E-Print Network [OSTI]

    Lieuwen, Timothy C.

    757 Proceedings of the Combustion Institute, Volume 28, 2000/pp. 757­763 EXPERIMENTAL DETERMINATION the response of the combustion process heat release to driven flow oscillations and the response determine the stability margin of combustors. Such an approach would enable combustion engi- neers

  11. Using Temporal Information in an Automated Classification of Summer, Marginal Ice Zone Imagery*

    E-Print Network [OSTI]

    Kansas, University of

    Using Temporal Information in an Automated Classification of Summer, Marginal Ice Zone Imagery, even with the human eye. BackScatter instability causu the intensities of the fiistyear ice, multiyear ice, and open water classes to intermix, thus making an intensity-based classification invalid

  12. Power Control by Kalman Filter With Error Margin for Wireless IP Networks

    E-Print Network [OSTI]

    Leung, Kin K.

    Power Control by Kalman Filter With Error Margin for Wireless IP Networks Kin K. Leung AT&T Labs, Room 4-120 100 Schulz Drive Red Bank, NJ 07701 Email: kkleung@research.att.com ABSTRACT A power-control enough due to little interference temporal correlation. In this paper, we enhance the power-control

  13. Eastern margin variability of the South Pacific Convergence Zone Benjamin R. Lintner1

    E-Print Network [OSTI]

    Lintner, Benjamin Richard

    intensity associated with increased moisture near the mean eastern SPCZ margin and an eastward displacement a spurious ``double ITCZ'' [Zhang, 2001]. Such behavior may stem from deficiencies in ocean: Scientific programme overview, 2006, available at http://www.eol. ucar.edu/projects/vocals]. [3] Regionally

  14. Eos, Vol. 89, No. 7, 12 February 2008 Understanding passive margins--thick

    E-Print Network [OSTI]

    Stern, Robert J.

    carbon dioxide. Natural hazards of hurricanes, tsunamis, sea level rise, and rapid subsidence imaging to better understand the 4-D evolution of the conti- nental United States. GeoSwath empha- sizes conti- nental evolution. Passive margins are built above broad transitional zones, several hun- dred

  15. Review article Assessment of tsunami hazard to the U.S. Atlantic margin

    E-Print Network [OSTI]

    ten Brink, Uri S.

    , and the presence of ten nuclear power plants along the coast, make this region highly vulnerable to flooding to the generation of landslides along the U.S. Atlantic margin. Analysis of landslide statistics along the fluvial initiated by seismic acceleration, and failed as aggregate slope failures. How tsunamis are generated from

  16. Seismic margins assessment of the plutonium processing facility Los Alamos National Laboratory

    SciTech Connect (OSTI)

    Goen, L.K. [Los Alamos National Lab., NM (United States); Salmon, M.W. [EQE International, Irwine, CA (United States)

    1995-12-01T23:59:59.000Z

    Results of the recently completed seismic evaluation at the Los Alamos National Laboratory site indicate a need to consider seismic loads greater than design basis for many structures systems and components (SSCs). DOE Order 5480.28 requires that existing SSCs be evaluated to determine their ability to withstand the effects of earthquakes when changes in the understanding of this hazard results in greater loads. In preparation for the implementation of DOE Order 5480.28 and to support the update of the facility Safety Analysis Report, a seismic margin assessment of SSCs necessary for a monitored passive safe shutdown of the Plutonium Processing Facility (PF-4) was performed. The seismic margin methodology is given in EPRI NP-6041-SL, ``A Methodology for Assessment of Nuclear Power Plant Seismic Margin (Revision 1)``. In this methodology, high confidence of low probability of failure (HCLPF) capacities for SSCs are estimated in a deterministic manner. For comparison to the performance goals given in DOE Order 5480.28, the results of the seismic margins assessment were used to estimate the annual probability of failure for the evaluated SSCs. In general, the results show that the capacity for the SSCs comprising PF-4 is high. This is to be expected for a newer facility as PF-4 was designed in the early 1970`s. The methodology and results of this study are presented in this paper.

  17. Marginally trapped surfaces in L4 an extended Weierstrass-Bryant representation

    E-Print Network [OSTI]

    Gálvez, José Antonio

    Marginally trapped surfaces in L4 and an extended Weierstrass-Bryant representation Juan A. Aledoa-30203 Cartagena, Murcia, Spain. e-mail: pablo.mira@upct.es Date: February 2, 2005 Keywords: Bryant surfaces in L3, and the Bryant repre- sentation for mean curvature one surfaces in the hyperbolic 3-space

  18. Seismic Safety Margins Research Program. Phase I, final report. Major structure response (Project IV). Volume 5

    SciTech Connect (OSTI)

    Benda, B. J.; Johnson, J. J.; Lo, T. Y.

    1981-05-01T23:59:59.000Z

    Task of the Major Structure Response Project within the Seismic Safety Margins Research Program (SSMRP) was to develop detailed finite element models of the Zion Nuclear Power Plant's containment building and auxiliary-fuel-turbine (AFT) complex. The resulting models served as input to the seismic methodology analysis chain.

  19. Author's personal copy Methane seepage along the Hikurangi Margin of New Zealand: Geochemical

    E-Print Network [OSTI]

    Wehrli, Bernhard

    : Methane seepage gas hydrate water column sea surface carbon isotopes Hikurangi Margin The concentration and carbon isotope values of dissolved methane were measured in the water column at Rock Garden, Omakere­Temperature­Depth (CTD) operations were at Faure Site of Rock Garden. Here, seafloor bubble release was observed by ROV

  20. Non-marginally bound inhomogeneous dust collapse in higher dimensional space-time

    E-Print Network [OSTI]

    S. G. Ghosh; A. Banerjee

    2002-12-16T23:59:59.000Z

    We investigate the occurrence and nature of a naked singularity in the gravitational collapse of an inhomogeneous dust cloud described by a self-similar higher dimensional Tolman-Bondi space-time. Bound, marginally bound and unbound space-times are analyzed. The degree of inhomogeneity of the collapsing matter necessary to form a naked singularity is given.

  1. Optimized planning target volume margin in helical tomotherapy for prostate cancer: is there a preferred method?

    E-Print Network [OSTI]

    Cao, Yuan Jie; Chang, Kyung Hwan; Shim, Jang Bo; Kim, Kwang Hyeon; Jang, Min Sun; Yoon, Won Sup; Yang, Dae Sik; Park, Young Je; Kim, Chul Yong

    2015-01-01T23:59:59.000Z

    To compare the dosimetrical differences between plans generated by helical tomotherapy using 2D or 3D margining technique in in prostate cancer. Ten prostate cancer patients were included in this study. For 2D plans, planning target volume (PTV) was created by adding 5 mm (lateral/anterior-posterior) to clinical target volume (CTV). For 3D plans, 5 mm margin was added not only in lateral/anterior-posterior, but also in superior-inferior to CTV. Various dosimetrical indices, including the prescription isodose to target volume (PITV) ratio, conformity index (CI), homogeneity index (HI), target coverage index (TCI), modified dose homogeneity index (MHI), conformation number (CN), critical organ scoring index (COSI), and quality factor (QF) were determined to compare the different treatment plans. Differences between 2D and 3D PTV indices were not significant except for CI (p = 0.023). 3D margin plans (11195 MUs) resulted in higher (13.0%) monitor units than 2D margin plans (9728 MUs). There were no significant d...

  2. The effort factor: Evaluating the increasing marginal impact of resource extraction over time

    E-Print Network [OSTI]

    Pauly, Daniel

    conclude Global Environmental Change xxx (2014) xxx­xxx A R T I C L E I N F O Article history: Received 1The effort factor: Evaluating the increasing marginal impact of resource extraction over time Debra and Environmental Sociology, University of Alberta, Canada b Fisheries Centre, University of British Columbia

  3. Developing improved nuclear magnetic resonance marginal oscillator spectrometers for advanced teaching laboratories

    E-Print Network [OSTI]

    Willingham, Frank Phillip

    1988-01-01T23:59:59.000Z

    43 V CONCLUSION REFERENCES 46 47 VITA 49 LIST OF TABLES Table Pa, ge 1 Marginal oscillator signal ? to ? noise ratio (SNR) measurements. 40 2 Observed absorption line width as a, function of molarity. 41 3 Ratio of the fluorine gyromagnetic...

  4. Rapid sea level rise along the Antarctic margins driven by increased glacial1 Supplementary material4

    E-Print Network [OSTI]

    Naveira Garabato, Alberto

    Rapid sea level rise along the Antarctic margins driven by increased glacial1 discharge2 3 of the signal of anomalously rapid sea level rise in the41 Antarctic subpolar seas at the core of this study.42, the Antarctic coastal sea level rise signal is significantly different from47 zero with 95% confidence

  5. Carbonate platform growth and cyclicity at a terminal Proterozoic passive margin, Infra Krol Formation

    E-Print Network [OSTI]

    Kaufman, Alan Jay

    Carbonate platform growth and cyclicity at a terminal Proterozoic passive margin, Infra Krol lagoon, an arrangement reminiscent of many Phanerozoic and Proterozoic platforms. Growth of this complex. Variations in the number of both sets of cycles and component metre-scale cycles across the platform may

  6. Study of Marine Gas Hydrate on the Northern Cascadia Margin: Constraints from Logging and

    E-Print Network [OSTI]

    Study of Marine Gas Hydrate on the Northern Cascadia Margin: Constraints from Logging and Seismic and gas explaining the high hydrate concentrations at shallow depths of less than 100 meters below of the degree of Master of Science © Xuan Wang 2009 #12; i ABSTRACT This thesis presents estimates of gas

  7. seismic margin

    Office of Scientific and Technical Information (OSTI)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level: National5Sales for4,645 3,625 1,006 492 742EnergyOnItem Not FoundInformation DOEInformation SummaryTECHNICAL REPORT,m, iC lo

  8. A note on the rigidity of marginally outer trapped 2-spheres

    E-Print Network [OSTI]

    Galloway, Gregory J

    2015-01-01T23:59:59.000Z

    As discussed in the paper, in a matter-filled spacetime, perhaps with positive cosmological constant, a stable marginally outer trapped 2-sphere must satisfy a certain area inquality. Namely, its area must be bounded above by $4\\pi/c$, where $c > 0$ is a lower bound on a natural energy momentum term. In this paper we consider the rigidity that results for stable, or weakly outermost, marginally outer trapped 2-spheres that achieve this upper bound on the area. The "canonical" dynamical horizon in Vaidya spacetime and certain spacelike hypersurfaces in Nariai spacetime provide illustrations of the main results. These results may be viewed as spacetime analogues of the rigidity results of Bray, Brendle and Neves [10] concerning area minimizing 2-spheres in Riemannian 3-manifolds with scalar curvature having positive lower bound.

  9. On the marginal instability threshold condition of the aperiodic ordinary mode

    SciTech Connect (OSTI)

    Schlickeiser, R. [Institut für Theoretische Physik, Lehrstuhl IV: Weltraum- and Astrophysik, Ruhr-Universität, 44780 Bochum (Germany); Yoon, P. H. [Institute for Physical Science and Technology, University of Maryland, College Park, 20742 Maryland (United States); School of Space Research, Kyung Hee University, Yongin (Korea, Republic of)

    2014-07-15T23:59:59.000Z

    The purely growing ordinary (O) mode instability has recently received renewed attention owing to its potential applicability to the solar wind plasma. Here, an analytical marginal instability condition is derived for counter-streaming bi-Maxwellian plasma particle distribution functions. The derived marginal instability condition as a function of the temperature anisotropy and plasma beta agrees remarkably well with the numerically determined instability condition. The existence of a new instability domain of the O-mode at small plasma beta values is confirmed with the leading A??{sub ?}{sup ?1}-dependence, if the counter-stream parameter P{sub e} exceeds a critical value. At small plasma beta values at large enough counter-stream parameter, the O-mode also operates for temperature anisotropies A?=?T{sub ?}/T{sub ?}?>?1 even larger than unity, as the parallel counter-stream free energy exceeds the perpendicular bi-Maxwellian free energy.

  10. Developing improved nuclear magnetic resonance marginal oscillator spectrometers for advanced teaching laboratories 

    E-Print Network [OSTI]

    Willingham, Frank Phillip

    1988-01-01T23:59:59.000Z

    - cell, et ofi simultaneously (and independently) developed the essential equivalent of the "marginal oscillator" technique of detecting NMR signals. 4 His method combines the transmitter and receiver function in a single coil which surrounds the bulk... in NMR measurements: signal ? to ? noise ratio. All oscillators were coupled to the same NMR detection apparatus, developed especially for this thesis. The oscillator outputs were fed in parallel to an ordinary amplitude modulation detector (AM...

  11. Seismic Safety Margins Research Program. Phase I. Interim definition of terms

    SciTech Connect (OSTI)

    Smith, P.D.; Dong, R.G.

    1980-12-19T23:59:59.000Z

    This report documents interim definitions of terms in the Seismic Safety Margins Research Program (SSMRP). Intent is to establish a common-based terminology integral to the probabilistic methods that predict more realistically the behavior of nuclear power plants during an earthquake. These definitions are a response to a request by the Nuclear Regulatory Commission Advisory Committee on Reactor Safeguards at its meeting held November 15-16, 1979.

  12. Economic Recovery of Oil Trapped at Fan Margins Using High Angle Wells and Multiple Hydraulic Fractures

    SciTech Connect (OSTI)

    Mike L. Laue

    1997-05-08T23:59:59.000Z

    This project attempts to demonstrate the effectiveness of exploiting thin-layered, low-energy deposits at the distal margin of a propagating turbidite complex through the use of hydraulically-fractured horizontal or high-angle wells. The combination of a horizontal or high-angled well and hydraulic fracturing will allow greater pay exposure than can be achieved with conventional vertical wells while maintaining vertical communication between thininterbedded layers and the well bore.

  13. Expression of PRL proteins at invasive margin of rectal cancers in relation to preoperative radiotherapy

    SciTech Connect (OSTI)

    Wallin, Asa R. [Department of Oncology, Institute of Biomedicine and Surgery, University of Linkoeping, Linkoeping (Sweden); Svanvik, Joar [Department of Surgery, Institute of Biomedicine and Surgery, University of Linkoeping, Linkoeping (Sweden); Adell, Gunnar [Department of Oncology, Institute of Biomedicine and Surgery, University of Linkoeping, Linkoeping (Sweden); Sun Xiaofeng [Department of Oncology, Institute of Biomedicine and Surgery, University of Linkoeping, Linkoeping (Sweden)]. E-mail: xiasu@ibk.liu.se

    2006-06-01T23:59:59.000Z

    Purpose: PRL-3 (phosphatase of regenerating liver) is involved in metastasis of colorectal cancer; however, its therapeutic implication in cancer patients has not been studied. We investigated the relationships of PRL expression to radiotherapy (RT) in rectal cancer patients. Methods and Materials: Phosphatase of regenerating liver expression was immunohistochemically examined in distant (n = 36) and adjacent (n = 82) normal mucosa, primary tumor (n = 125), biopsy specimens (n = 96), and lymph node metastasis (n = 30) from rectal cancer patients participating in a clinical trial of preoperative RT. Results: Phosphatase of regenerating liver expression was increased from the distant to adjacent mucosa and to the primary tumor (p < 0.05). PRL was highly expressed at the invasive margin in 28% of the primary tumors and 26% of the metastases. In the RT group, strong PRL expression at the invasive margin was related to distant recurrence (p 0.006) and poor survival (p = 0.01), but not in the non-RT group. The survival significance remained even after adjusting for Dukes' stage and differentiation (p = 0.02). Additional multivariate analyses showed that the correlation with prognostic significance of PRL differed between the RT and non-RT groups (p = 0.01). Conclusion: Phosphatase of regenerating liver expression (rather than PRL-3 alone) at the invasive margin predicted resistance to RT and unfavorable survival in rectal cancer patients with preoperative RT.

  14. Higher U.S. Crop Prices Trigger Little Area Expansion so Marginal Land for Biofuel Crops Is Limited

    SciTech Connect (OSTI)

    Swinton, S.; Babcock, Bruce; James, Laura; Bandaru, Varaprasad

    2011-06-12T23:59:59.000Z

    By expanding energy biomass production on marginal lands that are not currently used for crops, food price increases and indirect climate change effects can be mitigated. Studies of the availability of marginal lands for dedicated bioenergy crops have focused on biophysical land traits, ignoring the human role in decisions to convert marginal land to bioenergy crops. Recent history offers insights about farmer willingness to put non-crop land into crop production. The 2006-09 leap in field crop prices and the attendant 64% gain in typical profitability led to only a 2% increase in crop planted area, mostly in the prairie states

  15. The marginal leakage of some dental cements in humans: a PIXE-microbeam approach

    SciTech Connect (OSTI)

    Zadro, A.; Passi, P. [Dental School, Department of Dental Materials, University of Padua (Italy); Cavalleri, G. [Dental School, Department of Restorative Dentistry, University of Verona (Italy); Galassini, S.; Moschini, G.; Rossi, P. [INFN, Laboratori Nazionali di Legnaro (Italy)

    1999-06-10T23:59:59.000Z

    The marginal leakage and water absorption of dental cements and restorative materials has been investigated by many authors with several techniques, some of which led to valid results. However, no technique could give, by itself, information both on leakage and water absorption, as these measurements usually need different investigations. PIXE micro beam offers the possibility of investigating these two aspects at the same time, since it is possible to map a proper marker element. In the present study, cavities were made on 50 extracted human molars, then filled with five different temporary cements (IRM, Cavit W, Kalsogen, Fermit N, SuperEBA). The filled teeth were placed into a 5% silver nitrate solution, and after three days, one, two, three and four weeks were examined. The samples for microPIXE were prepared after embedding the teeth in epoxy resin, and sectioning and grinding them down to a thickness of about 1 mm. The sections were placed on metal holders, and examined with a scanning proton {mu}beam, in Legnaro (Italy) at the AN2000 LAB of INFN National Laboratories. The beam consisted of 2.4 MeV protons, it had a cross section of 1.5 micron in diameter and typical currents of the order of some {mu}A were used. The maps were obtained by an 'ad hoc' software with a McIntosh personal computer. Mapping of silver allowed to evaluate both the marginal leakage and the water absorption for each cement. The samples filled with Cavit W showed a great infiltration, as the tracing element was found in the cement bulk, along the margins and inside the cavity, while those filled with IRM and Kalsogen presented only a deposition of the tracing solution on the cement surface. SuperEBA showed a poor resistance against microleakage, because the marker element was only detected along the cavity margins. Fermit N showed the best marginal integrity, and on its surface no traces of siver were found. In this case the better resistance may be due to the resin present in the composition of the material.

  16. Abstract The natural gas price surged in 2004. As a result, the marginal cost of some generators burning gas also rose sharply.

    E-Print Network [OSTI]

    Tolbert, Leon M.

    Abstract ­ The natural gas price surged in 2004. As a result, the marginal cost of some generators marginal cost, which is closely related to the natural gas price. Since gas units are usually the marginal the sensitivity of Var benefit with respect to generation cost. The U.S. natural gas industry has been

  17. Mller-Bker U, Thieme S. 2007. Livelihood Strategies in a Marginal Area of Nepal (Far West Nepal), with an emphasis on labour migration to India. In

    E-Print Network [OSTI]

    Richner, Heinz

    Müller-Böker U, Thieme S. 2007. Livelihood Strategies in a Marginal Area of Nepal (Far West Nepal and The Marginal: Social Geography of Older People in Nepal · Tomás Havlícek, Population Stability, Livelihood Strategies in a Marginal Area of Nepal (Far West Nepal), with an emphasis on labour migration

  18. Portable Optical Fiber Probe-Based Spectroscopic Scanner for Rapid Cancer Diagnosis: A New Tool for Intraoperative Margin Assessment

    E-Print Network [OSTI]

    Yu, Chung-Chieh

    There continues to be a significant clinical need for rapid and reliable intraoperative margin assessment during cancer surgery. Here we describe a portable, quantitative, optical fiber probe-based, spectroscopic tissue ...

  19. Upgrading of substandard housing in Portugal : planning strategies for the technical improvement of marginal settlements, case study, the Casal Ventoso

    E-Print Network [OSTI]

    De Castello-Branco, Fernando N. B

    1983-01-01T23:59:59.000Z

    The primary scope of this thesis is to deal, from a technical standpoint, with the implementation of the upgrading concept in marginal settlements in Portugal. It consists mainly of two parts: The rationale of the concept, ...

  20. Late-Pliocene timing of Corinth (Greece) rift-margin fault migration M.R. Leeder a,

    E-Print Network [OSTI]

    Utrecht, Universiteit

    Late-Pliocene timing of Corinth (Greece) rift-margin fault migration M.R. Leeder a, , G.H. Mack b Greece with respect to central Greece (v

  1. Evolution of oceanic margins : rifting in the Gulf of California and sediment diapirism and mantle hydration during subduction

    E-Print Network [OSTI]

    Miller, Nathaniel Clark

    2013-01-01T23:59:59.000Z

    This thesis investigates three processes that control the evolution of oceanic margins. Chapter 2 presents seismic images of a ~2-km-thick evaporite body in Guaymas Basin, central Gulf of California. In rifts, evaporites ...

  2. Sedimentary and faunal analysis of a marginal marine section, the Stone City Member (middle eocene), Crockett Formation, Burleson County, Texas

    E-Print Network [OSTI]

    Nelms, Katherine Currier

    1979-01-01T23:59:59.000Z

    partial fulf1llment of the requirement for the degree of MASTER OF SCIENCE December 1979 Major Subiect: Geology SEDIMENTARY AND FAUNAL ANALYSIS OF A MARGINAL MARINE SECTION, THE STONE CITY MEMBER (MIDDLE EOCENE), CROCKETT FORMATION, BURLESON COUNTY..., TEXAS A Thesis by KATHERINE CURRIER NELMS Approved as to style and content by: Chairman Cemmittek Head of par ment Member Member December 1979 ABSTRACT SEDIMENTARY AND FAUNAL ANALYSIS OF A MARGINAL MARINE SECTION, THE STONE CITY MEMBER (MIDDLE...

  3. The marginal costs and pricing of gas system upgrades to accommodate new electric generators

    SciTech Connect (OSTI)

    Ambrose, B.

    1995-12-31T23:59:59.000Z

    In the coming years, competitive forces and restructuring in the electric industry can be expected to increase substantially the demand for gas delivery service to new electric generating units by local distribution companies (LDCs) and pipeline companies across the United States. In meeting this demand, it is important that the prices paid by electric generators for gas delivery service properly reflect the costs of the resources utilized in providing service to them in order that their decisions regarding what to build and where as well as the manner in which their units are dispatched are as efficient as possible from a societal standpoint. This will assure that society`s resources will be neither squandered nor underutilized in providing service to these generators and aid in assuring that, once built, the units are run in an efficient manner. While the most efficient solution to this problem is a secondary market in tradeable pipeline capacity rights, we do not have such a system in place at this time. Further, tradeable rights for LDC capacity may be difficult to establish. An interim solution that will work in the confines of the present system and not create problems for the transition to tradeable rights is required. This purpose of this paper is to set out the important first principals involved in applying marginal costing to the provision of gas delivery service to new electric generating units rather than to present empirical data on the marginal costs of such service. Experience has shown that marginal costs are usually unique to the particular situation being costed.

  4. Stratigraphic evolution of Mesozoic continental margin and oceanic sequences northwest Australia and north Himalayas

    SciTech Connect (OSTI)

    Gradstein, F.M. (Bedford Institute of Oceanography, Dartmouth, Nova Scotia (Canada)); Von Rad, U. (Bundesanstalt fuer Geowissenschaften und Rohstoffe, Hannover (West Germany))

    1990-05-01T23:59:59.000Z

    The authors are investigating continental margin to ocean sequences of the incipient Indian Ocean as it replaced central Tethys. Objectives of this study are the dynamic relation between sedimentation, tectonics, and paleogeography. Principal basins formation along the northern edge of eastern Gondwana started in the Late Permian to the Triassic. By the Late Triassic-Early Jurassic, platform carbonates with thin, organic-rich lagoonal shales were laid down in a subtropical climate. This unit, which harbors some of the oldest known nannofossils, shows repeated shallowing-upward sequences. Subsequent southward drift of the Gondwana margin during the Middle Jurassic increased siliciclastic input in Nepal, when widespread sediment starvation or erosion during local uplift took place off parts of northwest Australia. A middle Callovian-early Oxfordian hiatus in Nepal is submarine and appears global in extent. The overlying 250-m-thick organic-rich black shales, correlative to the Oxford/Kimmeridge clays of circum-Atlantic petroleum basins, may be traced along the northern Himalayan Range, and probably represent an extensive continental slope deposit formed under an oxygen minimum layer in southern Tethys. The deposit's diverse foraminiferal microfauna was previously only known from boreal Laurasia. The Callovian breakup unconformity, off northwest Australia, precedes onset of sea-floor spreading at least 15-25 Ma. Sea-floor spreading, leading to the present Indian Ocean started in the Argo Abyssal Plain around 140 Ma, at the end of the Jurassic, was about 15 m.y. later than previously postulated. Australia and Greater India separated as early as the Late Valanginian, about 130 Ma. Mafic volcaniclastics in Nepalese deltaic sediments probably testify to concurrent continental margin volcanic activity, which may be a precursor to the slightly younger Rajmahal traps in eastern India.

  5. Development of the seismic input for use in the seismic safety margins research program

    SciTech Connect (OSTI)

    Bernreuter, D.L.; Chung, D.H.

    1980-01-29T23:59:59.000Z

    This paper briefly outlines the overall systems approach being developed for the Seismic Safety Margins Research Program. The unique features of the approach being taken to reduce the uncertainty in the seismic input for this program are discussed. These unique features will include extensive use of expert opinion, earthquake rupture simulation studies and the way in which the seismic hazard is incorporated into the overall systems analysis. Some very preliminary results are also given for the Zion site which is the power plant chosen for analysis in Phase I of the program.

  6. Seismic Safety Margins Research Program (Phase I). Project IV. Structural building response; Structural Building Response Review

    SciTech Connect (OSTI)

    Healey, J.J.; Wu, S.T.; Murga, M.

    1980-02-01T23:59:59.000Z

    As part of the Phase I effort of the Seismic Safety Margins Research Program (SSMRP) being performed by the University of California Lawrence Livermore Laboratory for the US Nuclear Regulatory Commission, the basic objective of Subtask IV.1 (Structural Building Response Review) is to review and summarize current methods and data pertaining to seismic response calculations particularly as they relate to the objectives of the SSMRP. This material forms one component in the development of the overall computational methodology involving state of the art computations including explicit consideration of uncertainty and aimed at ultimately deriving estimates of the probability of radioactive releases due to seismic effects on nuclear power plant facilities.

  7. Generator parameter uncertainties in the frequency-and-duration of cumulative margin events

    E-Print Network [OSTI]

    Tram, Nhat-Hanh

    1977-01-01T23:59:59.000Z

    Hea f Depar ent Member Member Mem r 4f~d Q~ (, /U~d~m~ Member May 1977 ABSTRACT Generator Parameter Uncertainties in the Frequency-and-Duration of Cumulative Margin Events. (May 1977) Nhat-Hanh Tram, B. S. , Texas A&M University Chairman... VITA 69 LIST OF TABLES Table Page 1. Generating Unit Parameters (Example for Sensitivity Studies) . 10 2. K Constants for Sensitivity Studies . 3. Frequency-and-Duration Sensitivities to A 4. Frequency-and-Duration Sensitivities to u 13 13 14...

  8. Margin Size is an Independent Predictor of Local Tumor Progression After Ablation of Colon Cancer Liver Metastases

    SciTech Connect (OSTI)

    Wang Xiaodong; Sofocleous, Constantinos T., E-mail: sofoclec@mskcc.org; Erinjeri, Joseph P.; Petre, Elena N. [Memorial Sloan-Kettering Cancer Center, Section of Interventional Radiology, Department of Radiology (United States)] [Memorial Sloan-Kettering Cancer Center, Section of Interventional Radiology, Department of Radiology (United States); Gonen, Mithat [Memorial Sloan-Kettering Cancer Center, Department of Epidemiology and Biostatistics (United States)] [Memorial Sloan-Kettering Cancer Center, Department of Epidemiology and Biostatistics (United States); Do, Kinh G. [Memorial Sloan-Kettering Cancer Center, Department of Radiology (United States)] [Memorial Sloan-Kettering Cancer Center, Department of Radiology (United States); Brown, Karen T.; Covey, Anne M.; Brody, Lynn A.; Alago, William; Thornton, Raymond H. [Memorial Sloan-Kettering Cancer Center, Section of Interventional Radiology, Department of Radiology (United States)] [Memorial Sloan-Kettering Cancer Center, Section of Interventional Radiology, Department of Radiology (United States); Kemeny, Nancy E. [Memorial Sloan-Kettering Cancer Center, Department of Medicine (United States)] [Memorial Sloan-Kettering Cancer Center, Department of Medicine (United States); Solomon, Stephen B. [Memorial Sloan-Kettering Cancer Center, Section of Interventional Radiology, Department of Radiology (United States)] [Memorial Sloan-Kettering Cancer Center, Section of Interventional Radiology, Department of Radiology (United States)

    2013-02-15T23:59:59.000Z

    This study was designed to evaluate the relationship between the minimal margin size and local tumor progression (LTP) following CT-guided radiofrequency ablation (RFA) of colorectal cancer liver metastases (CLM). An institutional review board-approved, HIPPA-compliant review identified 73 patients with 94 previously untreated CLM that underwent RFA between March 2003 and May 2010, resulting in an ablation zone completely covering the tumor 4-8 weeks after RFA dynamic CT. Comparing the pre- with the post-RFA CT, the minimal margin size was categorized to 0, 1-5, 6-10, and 11-15 mm. Follow-up included CT every 2-4 months. Kaplan-Meier methodology and Cox regression analysis were used to evaluate the effect of the minimal margin size, tumor location, size, and proximity to a vessel on LTP. Forty-five of 94 (47.9 %) CLM progressed locally. Median LTP-free survival (LPFS) was 16 months. Two-year LPFS rates for ablated CLM with minimal margin of 0, 1-5 mm, 6-10 mm, 11-15 mm were 26, 46, 74, and 80 % (p < 0.011). Minimal margin (p = 0.002) and tumor size (p = 0.028) were independent risk factors for LTP. The risk for LTP decreased by 46 % for each 5-mm increase in minimal margin size, whereas each additional 5-mm increase in tumor size increased the risk of LTP by 22 %. An ablation zone with a minimal margin uniformly larger than 5 mm 4-8 weeks postablation CT is associated with the best local tumor control.

  9. Energy-conserving perennial agriculture for marginal land in southern Appalachia. Final technical report

    SciTech Connect (OSTI)

    Williams, G.

    1982-01-30T23:59:59.000Z

    USDA economists predict the end of surplus farm production in the US within this decade. More and more marginal land will be cropped to provide feed for the growing world population and to produce energy. Much of this potential cropland in Southern Appalachia is poorly suited to annual crops, such as corn. Perennial crops are much better suited to steep, rocky, and wet sites. Research was undertaken on the theoretical potentials of perennial species with high predicted yields of protein, carbohydrates, or oils. Several candidate staple perennial crops for marginal land in Southern Appalachia were identified, and estimates were made of their yields, energy input requirements, and general suitabilities. Cropping systems incorporating honeylocust, persimmon, mulberry, jujube, and beech were compared with corn cropping systems. It appears that these candidate staple perennials show distinct advantages for energy conservation and environmental preservation. Detailed economic analyses must await actual demonstration trials, but preliminary indications for ethanol conversion systems with honeylocust are encouraging. It is suggested that short-term loans to farmers undertaking this new type of agriculture would be appropriate to solve cash-flow problems.

  10. Light Water Reactor Sustainability Program Support and Modeling for the Boiling Water Reactor Station Black Out Case Study Using RELAP and RAVEN

    SciTech Connect (OSTI)

    Diego Mandelli; Curtis Smith; Thomas Riley; John Schroeder; Cristian Rabiti; Aldrea Alfonsi; Joe Nielsen; Dan Maljovec; Bie Wang; Valerio Pascucci

    2013-09-01T23:59:59.000Z

    The existing fleet of nuclear power plants is in the process of extending its lifetime and increasing the power generated. In order to evaluate the impact of these two factors on the safety of the plant, the Risk Informed Safety Margin Characterization (RISMC) project aims to provide insight to decision makers through a series of simulations of the plant dynamics for different initial conditions (e.g., probabilistic analysis and uncertainty quantification). This report focuses, in particular, on the impact of power uprate on the safety of a boiled water reactor system. The case study considered is a loss of off-site power followed by the loss of diesel generators, i.e., a station black out (SBO) event. Analysis is performed by using a thermo-hydraulic code, i.e. RELAP-5, and a stochastic analysis tool currently under development at INL, i.e. RAVEN. Starting from the event tree models contained in SAPHIRE, we built the input file for RELAP-5 that models in great detail system dynamics under SBO conditions. We also interfaced RAVEN with RELAP-5 so that it would be possible to run multiple RELAP-5 simulation runs by changing specific keywords of the input file. We both employed classical statistical tools, i.e. Monte-Carlo, and more advanced machine learning based algorithms to perform uncertainty quantification in order to quantify changes in system performance and limitations as a consequence of power uprate. We also employed advanced data analysis and visualization tools that helped us to correlate simulation outcome such as maximum core temperature with a set of input uncertain parameters. Results obtained gave a detailed overview of the issues associated to power uprate for a SBO accident scenario. We were able to quantify how timing of safety related events were impacted by a higher reactor core power. Such insights can provide useful material to the decision makers to perform risk-infomed safety margins management.

  11. Improvement of the thermal margins in the Swedish Ringhals-3 PWR by introducing new fuel assemblies with thorium

    SciTech Connect (OSTI)

    Lau, C. W.; Demaziere, C. [Dept. of Applied Physics, Div. of Nuclear Engineering, Chalmers Univ. of Technology, 412 96 Gothenburg (Sweden); Nylen, H.; Sandberg, U. [Ringhals AB, 432 85 Vaeroebacka (Sweden)

    2012-07-01T23:59:59.000Z

    Thorium is a fertile material and most of the past research has focused on breeding thorium to fissile material. In this paper, the focus is on using thorium to improve the thermal margins by homogeneously distributing thorium in the fuel pellets. A proposed uranium-thorium-based fuel assembly is simulated for the Swedish Ringhals-3 PWR core in a realistic demonstration. All the key safety parameters, such as isothermal temperature coefficient of reactivity, Doppler temperature of reactivity, boron worth, shutdown margins and fraction of delayed neutrons are studied in this paper, and are within safety limits for the new core design using the uranium-thorium-based fuel assemblies. The calculations were performed by the two-dimensional transport code CASMO-4E and the two group steady-state three dimensional nodal code SIMULATE-3 from Studsvik Scandpower. The results showed that the uranium-thorium-based fuel assembly improves the thermal margins, both in the pin peak power and the local power (Fq). The improved thermal margins would allow more flexible core designs with less neutron leakage or could be used in power uprates to offer efficient safety margins. (authors)

  12. On the global economic potentials and marginal costs of non-renewable resources and the price dynamics of energy commodities

    E-Print Network [OSTI]

    Mercure, Jean-Francois

    2013-01-01T23:59:59.000Z

    A model is presented in this work for simulating endogenously the evolution of the marginal costs of production of energy carriers from non-renewable resources, their consumption, depletion pathways and timescales. Such marginal costs can be used to simulate the long term average price formation of energy commodities. Drawing on previous work where a global database of energy resource economic potentials was constructed, this work uses cost distributions of non-renewable resources in order to evaluate global flows of energy commodities. A mathematical framework is given to calculate endogenous flows of energy resources given an exogenous commodity price path. This framework can be used in reverse in order to calculate an exogenous marginal cost of production of energy carriers given an exogenous carrier demand. Using rigid price inelastic assumptions independent of the economy, these two approaches generate limiting scenarios that depict extreme use of natural resources. This is useful to characterise the cur...

  13. Lower Permian facies of the Palo Duro Basin, Texas: depositional systems, shelf-margin evolution, paleogeography, and petroleum potential

    SciTech Connect (OSTI)

    Handford, C.R.

    1980-01-01T23:59:59.000Z

    A Palo geological study suggests that potential hydrocarbon reservoirs occur in shelf-margin carbonates, delta-front sandstones, and fan-delta arkoses. Zones of porous (greater than 10 percent) dolomite are concentrated near shelf margins and have configurations similar to productive Lower Permian shelf-margin trends in New Mexico. Delta-front sandstones (log-computed porosity of 18 to 25 percent) are similar to producing deltaic sandstones of Morris Buie-Blaco Fields in North-Central Texas. Porous (18 percent) fan-delta sandstones along the south flank of the Amarillo Uplift may form reservoirs similiar to that of the Mobeetie Field on the north side of the Amarillo Uplife in Wheeler County, Texas. Potential hydrocarbon source beds occur in slope and basinal environments. Total organic carbon generally ranges from 1 to 2.3 percent by weight and averages 0.589 percent by weight.

  14. Ideas underlying quantification of margins and uncertainties(QMU): a white paper.

    SciTech Connect (OSTI)

    Helton, Jon Craig; Trucano, Timothy Guy; Pilch, Martin M.

    2006-09-01T23:59:59.000Z

    This report describes key ideas underlying the application of Quantification of Margins and Uncertainties (QMU) to nuclear weapons stockpile lifecycle decisions at Sandia National Laboratories. While QMU is a broad process and methodology for generating critical technical information to be used in stockpile management, this paper emphasizes one component, which is information produced by computational modeling and simulation. In particular, we discuss the key principles of developing QMU information in the form of Best Estimate Plus Uncertainty, the need to separate aleatory and epistemic uncertainty in QMU, and the risk-informed decision making that is best suited for decisive application of QMU. The paper is written at a high level, but provides a systematic bibliography of useful papers for the interested reader to deepen their understanding of these ideas.

  15. Handbook of nuclear power plant seismic fragilities, Seismic Safety Margins Research Program

    SciTech Connect (OSTI)

    Cover, L.E.; Bohn, M.P.; Campbell, R.D.; Wesley, D.A.

    1983-12-01T23:59:59.000Z

    The Seismic Safety Margins Research Program (SSMRP) has a gola to develop a complete fully coupled analysis procedure (including methods and computer codes) for estimating the risk of an earthquake-induced radioactive release from a commercial nuclear power plant. As part of this program, calculations of the seismic risk from a typical commercial nuclear reactor were made. These calculations required a knowledge of the probability of failure (fragility) of safety-related components in the reactor system which actively participate in the hypothesized accident scenarios. This report describes the development of the required fragility relations and the data sources and data reduction techniques upon which they are based. Both building and component fragilities are covered. The building fragilities are for the Zion Unit 1 reactor which was the specific plant used for development of methodology in the program. Some of the component fragilities are site-specific also, but most would be usable for other sites as well.

  16. MNSR transient analyses and thermal-hydraulic safety margins for HEU and LEU cores using PARET

    SciTech Connect (OSTI)

    Olson, Arne P. [RERTR Program, Argonne National Laboratory, Argonne, IL 60439 (United States); Jonah, S.A. [Centre for Energy Research and Training, Ahmadu Bello University, Zaria, P.M.B. 1014 (Nigeria)

    2008-07-15T23:59:59.000Z

    Thermal-hydraulic performance characteristics of Miniature Neutron Source Reactors under long-term steady-state and transient conditions are investigated. Safety margins and limiting conditions attained during these events are determined. Modeling extensions are presented that enable the PARET/ANL code to realistically track primary loop heatup, heat exchange to the pool, and heat loss from the pool to air over the pool. Comparisons are made of temperature predictions for HEU and LEU fueled cores under transient conditions. Results are obtained using three different natural convection heat transfer correlations: the original (PARET/ANL version 5), Churchill-Chu, and an experiment- based correlation from the China Institute of Atomic Energy (CIAE). The MNSR, either fueled by HEU or by LEU, satisfies the design limits for long-term transient operation. (author)

  17. Seismic safety margins research program. Project I SONGS 1 AFWS Project

    SciTech Connect (OSTI)

    Chuang, T.Y.; Smith, P.D.; Dong, R.G.; Bernreuter, D.L.; Bohn, M.P.; Cummings, G.E.; Wells, J.E.

    1981-02-24T23:59:59.000Z

    The seismic qualification requirements of auxiliary feedwater systems (AFWS) of Pressurized Water Reactors (PWR) were developed over a number of years. These are formalized in the publication General Design Criteria (Appendix A to 10CFR50). The full recognition of the system as an engineered safety feature did not occur until publication of the Standard Review Plan (1975). Efforts to determine how to backfit seismic requirements to earlier plants has been undertaken primarily in the Systematic Evaluation Program (SEP) for a limited number of operating reactors. Nuclear Reactor Research (RES) and NRR have requested LLNL to perform a probabilistic study on the AFWS of San Onofre Nuclear Generating Station (SONGS) Unit 1 utilizing the tools developed by the Seismic Safety Margins Research Program (SSMRP). The main objectives of this project are to: identify the weak links of AFWS; compare the failure probabilities of SONGS 1 and Zion 1 AFWS: and compare the seismic responses due to different input spectra and design values.

  18. Structure/piping sensitivity studies for the US NRC Seismic Safety Margins Research Program. [PWR; BWR

    SciTech Connect (OSTI)

    Shieh, L.C.; O'Connell, W.J.; Johnson, J.J.

    1983-01-01T23:59:59.000Z

    The Seismic Safety Margins Research Program (SSMRP) is a NRC-funded, multi-year program conducted by Lawrence Livermore National Laboratory (LLNL). One of the goals of the program is to develop a complete, fully coupled analysis procedure (including methods and computer codes) for estimating the risk of an earthquake-caused radioactive release from commercial nuclear power plant. The analysis procedure is based upon a state-of-the-art evaluation of the current seismic analysis design process and explicitly includes the uncertainties inherent in such a process. The results will be used to improve seismic licensing requirements for nuclear power plants. In Phase I, a probabilistic computational procedure was developed for the seismic safety assessment. In Phase II, sensitivity studies were performed, codes and models were improved, and analysis of the Zion plant was completed.

  19. Marginal instability threshold condition of the aperiodic ordinary mode in equal-mass plasmas

    SciTech Connect (OSTI)

    Vafin, S.; Schlickeiser, R. [Institut für Theoretische Physik, Lehrstuhl IV: Weltraum- and Astrophysik, Ruhr-Universität, Bochum (Germany); Yoon, P. H. [Institute for Physical Science and Technology, University of Maryland, College Park, Maryland 20742 (United States); School of Space Research, Kyung Hee University, Yongin-Si, Gyeonggi-Do 446-701 (Korea, Republic of)

    2014-10-15T23:59:59.000Z

    The purely growing ordinary (O) mode instability for counter-streaming bi-Maxwellian plasma particle distribution functions has recently received renewed attention due to its importance for the solar wind plasma. Here, the analytical marginal instability condition is derived for magnetized plasmas consisting of equal-mass charged particles, distributed in counter-streams with equal temperatures. The equal-mass composition assumption enormously facilitates the theoretical analysis due to the equality of the values of the electron and positron (positive and negative ion) plasma and gyrofrequencies. The existence of a new instability domain of the O-mode at small plasma beta values is confirmed, when the parallel counter-stream free energy exceeds the perpendicular bi-Maxwellian free energy.

  20. Fast prediction of transient stability margin in systems with SVC control and HVDC link

    SciTech Connect (OSTI)

    Tso, S.K. [City Univ. of Hong Kong (Hong Kong). Dept. of Manufacturing Engineering; Cheung, S.P. [ABB Transmission and Distribution Ltd., Hong Kong (Hong Kong). Dept. of Power Systems

    1995-12-31T23:59:59.000Z

    Recent developments in transient stability margin (TSM) prediction using the energy-based direct method have included excitation controllers, power system stabilizers (PSSs) and/or static VAr compensators (SVCs). These devices can be represented in their detailed dynamic models to desired degrees of complexity while the proposed extended equal-area criterion can still be effectively applied. This paper describes further development of this technique to incorporate an HVDC transmission into the test network for TSM prediction. The method is examined with a practical 17-machine power network representing the South China/Hong Kong system. An SVC control scheme is also installed in a weak bus of the test network for transient stability improvement. The results obtained show that there is no sacrifice in accuracy, speed or reliability of the TSM method with SVC and HVDC realistically incorporated into the study.

  1. Marginal Extended Perturbations in Two Dimensions and Gap-Exponent Relations

    E-Print Network [OSTI]

    L. Turban; B. Berche

    1997-09-11T23:59:59.000Z

    The most general form of a marginal extended perturbation in a two-dimensional system is deduced from scaling considerations. It includes as particular cases extended perturbations decaying either from a surface, a line or a point for which exact results have been previously obtained. The first-order corrections to the local exponents, which are functions of the amplitude of the defect, are deduced from a perturbation expansion of the two-point correlation functions. Assuming covariance under conformal transformation, the perturbed system is mapped onto a cylinder. Working in the Hamiltonian limit, the first-order corrections to the lowest gaps are calculated for the Ising model. The results confirm the validity of the gap-exponent relations for the perturbed system.

  2. Reservoir Characterization Research Laboratory

    E-Print Network [OSTI]

    Texas at Austin, University of

    Reservoir Characterization Research Laboratory for Carbonate Studies Executive Summary for 2014 Outcrop and Subsurface Characterization of Carbonate Reservoirs for Improved Recovery of Remaining/Al 0.00 0.02 0.04 Eagle Ford Fm #12;#12; Reservoir Characterization Research Laboratory Research Plans

  3. SU-E-T-36: An Investigation of the Margin From CTV to PTV Using Retraction Method for Cervical Carcinoma

    SciTech Connect (OSTI)

    Wu, D; Chen, J; Hao, Y; Liao, C; Huang, Y; Mo, Y; Wei, Y [The People's Hospital of Guangxi Zhuang Autonomous Region, Nanning, Guangxi (China)

    2014-06-01T23:59:59.000Z

    Purpose: This work employs the retraction method to compute and evaluate the margin from CTV to PTV based on the influence of target dosimetry of setup errors during cervical carcinoma patients treatment. Methods: Sixteen patients with cervical cancer were treated by Elekta synergy and received a total of 305 KV-CBCT images. The iso-center of the initial plans were changed according to the setup errors to simulate radiotherapy and then recalculated the dose distribution using leaf sequences and MUs for individual plans. The margin from CTV to PTV will be concluded both by the method of retracting (Fixed the PTV of the original plan, and retract PTV a certain distance defined as simulative organization CTVnx. The minimum distance value from PTV to CTVnx which get specified doses, namely guarantee at least 99% CTV volume can receive the dose of 95%, is the margin CTV to PTV we found) and the former formula method. Results: (1)The setup errors of 16 patients in X, Y and Z directions were(1.13±2.94) mm,(?1.63±7.13) mm,(?0.65±2.25) mm. (2) The distance between CTVx and PTV was 5, 9 and 3mm in X, Y and Z directions According to 2.5+0.7?. (3) Transplantation plans displayed 99% of CTVx10- CTVx7 and received 95% of prescription dose, but CTVx6- CTVx3 departed from standard of clinic.In order to protect normal tissues, we selected 7mm as the minimum value of the margin from CTV to PTV. Conclusion: We have test an retraction method for the margin from CTV to PTV evaluation. The retraction method is more reliable than the formula method for calculating the margin from the CTV to the PTV, because it represented practice of treatment, and increasing a new method in this field.

  4. Stereotactic Radiosurgery of the Postoperative Resection Cavity for Brain Metastases: Prospective Evaluation of Target Margin on Tumor Control

    SciTech Connect (OSTI)

    Choi, Clara Y.H.; Chang, Steven D. [Department of Neurosurgery, Stanford University Medical Center, Stanford, California (United States)] [Department of Neurosurgery, Stanford University Medical Center, Stanford, California (United States); Gibbs, Iris C. [Department of Radiation Oncology, Stanford University Medical Center, Stanford, California (United States)] [Department of Radiation Oncology, Stanford University Medical Center, Stanford, California (United States); Adler, John R.; Harsh, Griffith R.; Lieberson, Robert E. [Department of Neurosurgery, Stanford University Medical Center, Stanford, California (United States)] [Department of Neurosurgery, Stanford University Medical Center, Stanford, California (United States); Soltys, Scott G., E-mail: sgsoltys@stanford.edu [Department of Radiation Oncology, Stanford University Medical Center, Stanford, California (United States)

    2012-10-01T23:59:59.000Z

    Purpose: Given the neurocognitive toxicity associated with whole-brain irradiation (WBRT), approaches to defer or avoid WBRT after surgical resection of brain metastases are desirable. Our initial experience with stereotactic radiosurgery (SRS) targeting the resection cavity showed promising results. We examined the outcomes of postoperative resection cavity SRS to determine the effect of adding a 2-mm margin around the resection cavity on local failure (LF) and toxicity. Patients and Methods: We retrospectively evaluated 120 cavities in 112 patients treated from 1998-2009. Factors associated with LF and distant brain failure (DF) were analyzed using competing risks analysis, with death as a competing risk. The overall survival (OS) rate was calculated by the Kaplan-Meier product-limit method; variables associated with OS were evaluated using the Cox proportional hazards and log rank tests. Results: The 12-month cumulative incidence rates of LF and DF, with death as a competing risk, were 9.5% and 54%, respectively. On univariate analysis, expansion of the cavity with a 2-mm margin was associated with decreased LF; the 12-month cumulative incidence rates of LF with and without margin were 3% and 16%, respectively (P=.042). The 12-month toxicity rates with and without margin were 3% and 8%, respectively (P=.27). On multivariate analysis, melanoma histology (P=.038) and number of brain metastases (P=.0097) were associated with higher DF. The median OS time was 17 months (range, 2-114 months), with a 12-month OS rate of 62%. Overall, WBRT was avoided in 72% of the patients. Conclusion: Adjuvant SRS targeting the resection cavity of brain metastases results in excellent local control and allows WBRT to be avoided in a majority of patients. A 2-mm margin around the resection cavity improved local control without increasing toxicity compared with our prior technique with no margin.

  5. RECONSTRUCTING PALEO-SMT POSITIONS ON THE CASCADIA MARGIN USING MAGNETIC SUSCEPTIBILITY

    SciTech Connect (OSTI)

    Johnson, Joel; Phillips, Stephen

    2014-09-30T23:59:59.000Z

    Magnetic susceptibility (?) is a mixed signal in marine sediments, representing primary depositional and secondary diagenetic processes. Production of hydrogen sulfide via anaerobic oxidation of methane (AOM) at the sulfate-methane transition (SMT) and organoclastic sulfate reduction above the SMT can result in the dissolution of iron oxides, altering ? in sediments in methane gas and gas hydrate bearing regions. We investigated records of ? on the Cascadia margin (ODP Sites 1249 and 1252; IODP Site 1325) using a Zr/Rb heavy mineral proxy from XRF core scanning to identify intervals of primary detrital magnetic susceptibility and intervals and predict intervals affected by magnetite dissolutions. We also measured total sulfur content, grain size distributions, total organic carbon (TOC) content, and magnetic mineral assemblage. The upper 100 m of Site 1252 contains a short interval of ? driven by primary magnetite, with multiple intervals (> 90 m total) of decreased ? correlated with elevated sulfur content, consistent with dissolution of magnetite and re-precipitation of pyrite. In the upper 90 m of Site 1249, ? is almost entirely altered by diagenetic processes, with much of the low ? explained by a high degree of pyritization, and some intervals affected by the precipitation of magnetic iron sulfides. At Site 1325, ? between 0-20 and 51-73 mbsf represents primary mineralogy, and in the interval 24-51 mbsf, ? may be reduced due to pyritization. This integrated approach allows for a prediction of primary ? and the amount of ? loss at each site when compared to actual ? measurements. In the case of magnetite dissolution and full pyritization, these drawdowns in ? are supported by sulfur measurements, and the exposure times of magnetite to hydrogen sulfide can be modeled. The presence of methane and methane hydrates at these sites, as well as large variations in TOC content, suggest that the past migration rates of the SMT and variation in sulfate reduction rates may influence ? alteration along the Cascadia margin.

  6. Marginal Recurrence Requiring Salvage Radiotherapy After Stereotactic Body Radiotherapy for Spinal Metastases

    SciTech Connect (OSTI)

    Koyfman, Shlomo A.; Djemil, Toufik [Department of Radiation Oncology, Cleveland Clinic, Cleveland, Ohio (United States); Burdick, Michael J. [Department of Radiation Oncology, Tulane Medical Center, New Orleans, Louisiana (United States); Woody, Neil; Balagamwala, Ehsan H.; Reddy, Chandana A. [Department of Radiation Oncology, Cleveland Clinic, Cleveland, Ohio (United States); Angelov, Lilyana [Department of Neurosurgery, Cleveland Clinic, Cleveland, Ohio (United States); Suh, John H. [Department of Radiation Oncology, Cleveland Clinic, Cleveland, Ohio (United States); Chao, Samuel T., E-mail: chaos@ccf.org [Department of Radiation Oncology, Cleveland Clinic, Cleveland, Ohio (United States)

    2012-05-01T23:59:59.000Z

    Introduction: We sought to quantify and identify risk factors associated with margin recurrence (MR) requiring salvage radiotherapy after stereotactic body radiation therapy (SBRT) for spinal metastases. Methods: We retrospectively reviewed patients with spinal metastases who were treated with single-fraction SBRT between 2006 and 2009. Gross tumor was contoured, along with either the entire associated vertebral body(ies) or the posterior elements, and included in the planning target volume. No additional margins were used. MR was defined as recurrent tumor within one vertebral level above or below the treated lesion that required salvage radiotherapy. Only patients who presented for 3-month post-SBRT follow-up were included in the analysis. Fine and Gray competing risk regression models were generated to identify variables associated with higher risks of MR. MR was plotted using cumulative incidence analysis. Results: SBRT was delivered to 208 lesions in 149 patients. Median follow-up was 8.6 months, and median survival was 12.8 months. The median prescribed dose was 14 Gy (10-16 Gy). MR occurred in 26 (12.5%) treated lesions, at a median time of 7.7 months after SBRT. Patients with paraspinal disease at the time of SBRT (20.8% vs. 7.6% of patients; p = 0.02), and those treated with <16 Gy (16.3% vs. 6.3% of patients, p = 0.14) had higher rates of MR. Both variables were associated with significantly higher risk of MR on multivariate analysis. Conclusion: SBRT for spinal metastases results in a low overall rate of MR. The presence of paraspinal disease at the time of SBRT and a dose of <16 Gy were associated with higher risks of MR.

  7. The effects of a marginal intake of magnesium with soy protein concentrate on growth, gestation, and lactation in the rat 

    E-Print Network [OSTI]

    McLaughlin, Cynthia Anne

    1986-01-01T23:59:59.000Z

    THE EFFECTS OF A MARGINAL INTAKE OF MAGNESIUM WITH SOY PROTEIN CONCENTRATE ON GROWTH, GESTATION, AND LACTATION IN THE RAT A Thesis by CYNTHIA ANNE MCLAUGHLIN Submitted to the Graduate College of Texas A&M University in partial fulfillment... of the requirements for the degree of MASTER OF SCIENCE May 19B6 Major Subject: Nutrrtion THE EFFECTS OF A MARGINAL INTAKE OF MAGNESIUM WITH SOY PROTEIN CONCENTRATE ON GROWTH, GESTATION, AND LACTATION IN THE RAT A Thesis by CYNTHIA ANNE MCLAUGHLIN Approved...

  8. Reservoir CharacterizationReservoir Characterization Research LaboratoryResearch Laboratory

    E-Print Network [OSTI]

    Texas at Austin, University of

    Reservoir CharacterizationReservoir Characterization Research LaboratoryResearch Laboratory at Austin Austin, Texas 78713Austin, Texas 78713--89248924 #12;Reservoir Characterization Research Laboratory for Carbonate Studies Research Plans for 2012 Outcrop and Subsurface Characterization of Carbonate

  9. Three independent one-dimensional margins for single-fraction frameless stereotactic radiosurgery brain cases using CBCT

    SciTech Connect (OSTI)

    Zhang, Qinghui [Department of Radiation Oncology, University of Nebraska Medical Center, Omaha, Nebraska 68198 and Department of Medical Physics, Memorial Sloan-Kettering Cancer Center, New York, New York 10065 (United States)] [Department of Radiation Oncology, University of Nebraska Medical Center, Omaha, Nebraska 68198 and Department of Medical Physics, Memorial Sloan-Kettering Cancer Center, New York, New York 10065 (United States); Chan, Maria F.; Burman, Chandra; Song, Yulin [Department of Medical Physics, Memorial Sloan-Kettering Cancer Center, New York, New York 10065 (United States)] [Department of Medical Physics, Memorial Sloan-Kettering Cancer Center, New York, New York 10065 (United States); Zhang, Mutian [Department of Radiation Oncology, University of Nebraska Medical Center, Omaha, Nebraska 68198 (United States)] [Department of Radiation Oncology, University of Nebraska Medical Center, Omaha, Nebraska 68198 (United States)

    2013-12-15T23:59:59.000Z

    Purpose: Setting a proper margin is crucial for not only delivering the required radiation dose to a target volume, but also reducing the unnecessary radiation to the adjacent organs at risk. This study investigated the independent one-dimensional symmetric and asymmetric margins between the clinical target volume (CTV) and the planning target volume (PTV) for linac-based single-fraction frameless stereotactic radiosurgery (SRS).Methods: The authors assumed a Dirac delta function for the systematic error of a specific machine and a Gaussian function for the residual setup errors. Margin formulas were then derived in details to arrive at a suitable CTV-to-PTV margin for single-fraction frameless SRS. Such a margin ensured that the CTV would receive the prescribed dose in 95% of the patients. To validate our margin formalism, the authors retrospectively analyzed nine patients who were previously treated with noncoplanar conformal beams. Cone-beam computed tomography (CBCT) was used in the patient setup. The isocenter shifts between the CBCT and linac were measured for a Varian Trilogy linear accelerator for three months. For each plan, the authors shifted the isocenter of the plan in each direction by ±3 mm simultaneously to simulate the worst setup scenario. Subsequently, the asymptotic behavior of the CTV V{sub 80%} for each patient was studied as the setup error approached the CTV-PTV margin.Results: The authors found that the proper margin for single-fraction frameless SRS cases with brain cancer was about 3 mm for the machine investigated in this study. The isocenter shifts between the CBCT and the linac remained almost constant over a period of three months for this specific machine. This confirmed our assumption that the machine systematic error distribution could be approximated as a delta function. This definition is especially relevant to a single-fraction treatment. The prescribed dose coverage for all the patients investigated was 96.1%± 5.5% with an extreme 3-mm setup error in all three directions simultaneously. It was found that the effect of the setup error on dose coverage was tumor location dependent. It mostly affected the tumors located in the posterior part of the brain, resulting in a minimum coverage of approximately 72%. This was entirely due to the unique geometry of the posterior head.Conclusions: Margin expansion formulas were derived for single-fraction frameless SRS such that the CTV would receive the prescribed dose in 95% of the patients treated for brain cancer. The margins defined in this study are machine-specific and account for nonzero mean systematic error. The margin for single-fraction SRS for a group of machines was also derived in this paper.

  10. Perth, WA, 1821 August 2013 West Australian Basins Symposium 2013 1 The southwest margin of Australia is a complex and

    E-Print Network [OSTI]

    Müller, Dietmar

    been developed for all of western Australia (Gibbons et al., 2012) that includes the continental variability of the margin architecture. Integration of a 1 Energy Division, Geoscience Australia, ACT 2601 of Australia is a complex and relatively poorly studied offshore continental region that includes the Perth

  11. Analysis of Post-Kyoto CO2 Emissions Trading Using Marginal Abatement Curves A. Denny Ellerman and Annelne Decaux

    E-Print Network [OSTI]

    Analysis of Post-Kyoto CO2 Emissions Trading Using Marginal Abatement Curves A. Denny Ellerman the advantages of emissions trading. In this paper, the authors derive MACs from EPPA, the MIT Joint Program the benefits of emissions trading in achieving the emission reduction targets implied by the Kyoto Protocol

  12. Natural Hazards and Effects on Local Populations: Applications of NSF MARGINS research to hazards mitigation in Central America

    E-Print Network [OSTI]

    Marshall, Jeffrey S.

    , with less attention directed toward the behavior of quiescent volcanoes, or to the long term evolution. Earthquake & tsunami hazards: Considerable scientific attention has been focused on large plate boundary, and tsunamigenic events on the subduction thrust. MARGINS research can help advance earthquake and tsunami hazards

  13. The lid wiper and muco-cutaneous junction anatomy of the human eyelid margins: an in vivo confocal and

    E-Print Network [OSTI]

    Meyers, Ron

    The lid wiper and muco-cutaneous junction anatomy of the human eyelid margins: an in vivo confocal thickness (lid wiper). This continued for 0.3­1.5 mm and formed a slope. The MCJ and lid wiper extended all border has distinct zones. Due to its location and morphology, the epithelial lip of the lid wiper

  14. Numerical Modeling of Salt Tectonics on Passive Continental Margins: Preliminary Assessment of the Effects of Sediment Loading,

    E-Print Network [OSTI]

    Beaumont, Christopher

    Numerical Modeling of Salt Tectonics on Passive Continental Margins: Preliminary Assessment Sciences The University of Leeds LS2 9JT Leeds United Kingdom Abstract Salt tectonics in passive model of frictional-plastic sedimentary overburden overlying a linear viscous salt layer. We present

  15. PROPOSAL TITLE Evolution of Rift and Rifted Margin Sedimentary Basins: Numerical Investigation of Tectonics, Sedimentation, and Salt-

    E-Print Network [OSTI]

    Beaumont, Christopher

    of Tectonics, Sedimentation, and Salt- Related Structures of the Atlantic Canada Margin and Elsewhere will focus on: crustal deformation during rifting and rift reactivation; salt tectonics induced by thin of salt and the development of finite amplitude salt structures. 3) The role of differential sedimentary

  16. Oxygen and organic matter thresholds for benthic faunal activity on the Pakistan margin oxygen minimum zone (7001100 m)

    E-Print Network [OSTI]

    Levin, Lisa

    Oxygen and organic matter thresholds for benthic faunal activity on the Pakistan margin oxygen increased animal activity associated with increasing bottom-water oxygen concentration. We examined faunal community responses to oxygen and organic matter gradients across the lower oxygen minimum zone (OMZ

  17. Economic Impacts of Changes in United States Rice Price Variability on Market Efficiency, Marketing Margin and Producer Viability.

    E-Print Network [OSTI]

    Grant, W.R.; Richardson, J.W.; Brorsen, B.W.; Rister, M.E

    1984-01-01T23:59:59.000Z

    Limitations and Conclusions . .................... 12 Appendix ..................................... 14 References ................................... 16 Acknowledgments . ............................ . 16 SUMMARY This study investigates the impacts.... It investigates the short-run interactions among rice prices by analyzing dynamic adjustments in the markets under two policy situations-in 1960-71 for high price sup ports, and 1974-81 for low price supports. The margin between farm and mill prices...

  18. Abstract--This paper proposes an effective VAR planning based on reactive power margin for the enhancement of dynamic

    E-Print Network [OSTI]

    Pota, Himanshu Roy

    , distributed generation (DG), D-STATCOM, reactive power margin, wind turbine. I. INTRODUCTION URRENTLY for the enhancement of dynamic voltage stability in distribution networks with distributed wind generation results showing the effects of composite load on voltage dynamics in the distribution network through

  19. Surface uplift, fluvial incision, and geodynamics of plateau evolution, from the western margin of the Central Andean plateau

    E-Print Network [OSTI]

    Schildgen, Taylor F. (Taylor Frances)

    2008-01-01T23:59:59.000Z

    The Colca-Majes and Cotahuasi-Ocona rivers in southwest Peru that cut through the western margin of the Andean plateau en route to the Pacific Ocean incised canyons over 3 km deep in response to late Cenozoic surface uplift. ...

  20. The Neoproterozoic Keraf Suture in NE Sudan: Sinistral Transpression along the Eastern Margin of West Gondwana1

    E-Print Network [OSTI]

    Stern, Robert J.

    The Neoproterozoic Keraf Suture in NE Sudan: Sinistral Transpression along the Eastern Margin Sudan remains poorly under-2 University of Houston Department of Geosciences, Hous- stood because of its Geological Research Authority of the Sudan, Regional Ge- ology Administration, Box 410, Khartoum, Sudan

  1. GLOVEBOX GLOVE CHARACTERIZATION SUMMARY

    SciTech Connect (OSTI)

    Korinko, P.

    2012-05-14T23:59:59.000Z

    A task was undertaken to determine primarily the permeation behavior of various glove compounds from four manufacturers. As part of the basic characterization task, the opportunity to obtain additional mechanical and thermal properties presented itself. Consequently, a total of fifteen gloves were characterized for permeation, Thermogravimetric Analysis, Puncture Resistance, Tensile Properties and Dynamic Mechanical Analysis. Detailed reports were written for each characterization technique used. This report contains the summary of the results.

  2. Economics and Policies for Carbon Capture and Sequestration in the Western United States: A Marginal Cost Analysis of Potential Power Plant Deployment

    E-Print Network [OSTI]

    capital costs. Capacity factors and the impact of carbon prices vary considerably by plant location: A Marginal Cost Analysis of Potential Power Plant Deployment by Gary Shu B.S., Electrical Engineering;Economics and Policies for Carbon Capture and Sequestration in the Western United States: A Marginal Cost

  3. ORISE: Characterization surveys

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    extent of radiological contamination at sites scheduled for decontamination and decommissioning (D&D). A fundamental aspect of all D&D projects, characterization surveys provide...

  4. Seismic characterization of fractures

    E-Print Network [OSTI]

    JM Carcione

    2014-06-07T23:59:59.000Z

    Seismic characterization of fractures. José M. Carcione, OGS, Italy. Fractured geological formations are generally represented with a stress-strain relation.

  5. Initial Data for General Relativity Containing a Marginally Outer Trapped Torus

    E-Print Network [OSTI]

    Sascha Husa

    1996-06-15T23:59:59.000Z

    Asymptotically flat, time-symmetric, axially symmetric and conformally flat initial data for vacuum general relativity are studied numerically on $R^3$ with the interior of a standard torus cut out. By the choice of boundary condition the torus is marginally outer trapped, and thus a surface of minimal area. Apart from pure scaling the standard tori are parameterized by a radius $a\\in [0,1]$, where $a=0$ corresponds to the limit where the boundary torus degenerates to a circle and $a=1$ to a torus that touches the axis of symmetry. Noting that these tori are the orbits of a $U(1)\\times U(1)$ conformal isometry allows for a simple scheme to solve the constraint, involving numerical solution of only ordinary differential equations.The tori are unstable minimal surfaces (i.e. only saddle points of the area functional) and thus can not be apparent horizons, but are always surrounded by an apparent horizon of spherical topology, which is analyzed in the context of the hoop conjecture and isoperimetric inequality for black holes.

  6. Seismic Safety Margins Research Program: Phase II program plan (FY 83-FY 84)

    SciTech Connect (OSTI)

    Bohn, M.P.; Bernreuter, D.L.; Cover, L.E.; Johnson, J.J.; Shieh, L.C.; Shukla, S.N.; Wells, J.E.

    1982-08-02T23:59:59.000Z

    The Seismic Safety Margins Research Program (SSMRP) is an NRC-funded, multiyear program conducted by Lawrence Livermore National Laboratory (LLNL). Its goal is to develop a complete, fully coupled analysis procedure (including methods and computer codes) for estimating the risk of an earthquake-caused radioactive release from a commercial nuclear power plant. The analysis procedure is based upon a state-of-the-art evaluation of the current seismic analysis and design process and explicitly includes the uncertainties inherent in such a process. The results will be used to improve seismic licensing requirements for nuclear power plants. As currently planned, the SSMRP will be completed in September, 1984. This document presents the program plan for work to be done during the remainder of the program. In Phase I of the SSMRP, the necessary tools (both computer codes and data bases) for performing a detailed seismic risk analysis were identified and developed. Demonstration calculations were performed on the Zion Nuclear Power Plant. In the remainder of the program (Phase II) work will be concentrated on developing a simplified SSMRP methodology for routine probabilistic risk assessments, quantitative validation of the tools developed and application of the simplified methodology to a Boiling Water Reactor. (The Zion plant is a pressurized water reactor.) In addition, considerable effort will be devoted to making the codes and data bases easily accessible to the public.

  7. Large-scale simulation of methane dissociation along the West Spitzbergen Margin

    SciTech Connect (OSTI)

    Reagan, M.T.; Moridis, G.J.

    2009-07-15T23:59:59.000Z

    Vast quantities of methane are trapped in oceanic hydrate deposits, and there is concern that a rise in the ocean temperature will induce dissociation of these hydrate accumulations, potentially releasing large amounts of methane into the atmosphere. The recent discovery of active methane gas venting along the landward limit of the gas hydrate stability zone (GHSZ) on the shallow continental slope west of Spitsbergen could be an indication of this process, if the source of the methane can be confidently attributed to dissociating hydrates. In the first large-scale simulation study of its kind, we simulate shallow hydrate dissociation in conditions representative of the West Spitsbergen margin to test the hypothesis that the observed gas release originated from hydrates. The simulation results are consistent with this hypothesis, and are in remarkable agreement with the recently published observations. They show that shallow, low-saturation hydrate deposits, when subjected to temperature increases at the seafloor, can release significant quantities of methane, and that the releases will be localized near the landward limit of the top of the GHSZ. These results indicate the possibility that hydrate dissociation and methane release may be both a consequence and a cause of climate change.

  8. Margin of Safety Definition and Examples Used in Safety Basis Documents and the USQ Process

    SciTech Connect (OSTI)

    Beaulieu, R. A.

    2013-10-03T23:59:59.000Z

    The Nuclear Safety Management final rule, 10 CFR 830, provides an undefined term, margin of safety (MOS). Safe harbors listed in 10 CFR 830, Table 2, such as DOE?STD?3009 use but do not define the term. This lack of definition has created the need for the definition. This paper provides a definition of MOS and documents examples of MOS as applied in a U.S. Department of Energy (DOE) approved safety basis for an existing nuclear facility. If we understand what MOS looks like regarding Technical Safety Requirements (TSR) parameters, then it helps us compare against other parameters that do not involve a MOS. This paper also documents parameters that are not MOS. These criteria could be used to determine if an MOS exists in safety basis documents. This paper helps DOE, including the National Nuclear Security Administration (NNSA) and its contractors responsible for the safety basis improve safety basis documents and the unreviewed safety question (USQ) process with respect to MOS.

  9. Margin on Gross Tumor Volume and Risk of Local Recurrence in Head-and-Neck Cancer

    SciTech Connect (OSTI)

    Caudell, Jimmy J.; Meredith, Ruby F.; Spencer, Sharon A.; Keene, Kimberley S.; Dobelbower, M. Christian [Department of Radiation Oncology, University of Alabama-Birmingham, Birmingham, AL (United States); Bonner, James A., E-mail: jabonner@uabmc.ed [Department of Radiation Oncology, University of Alabama-Birmingham, Birmingham, AL (United States)

    2010-01-15T23:59:59.000Z

    Purpose: To determine whether the method or extent of construction of the high-dose clinical target volume (CTV) and high-dose planning target volume (PTV) in intensity-modulated radiation therapy (IMRT) for head-and-neck cancer are associated with an increased risk of locoregional failure. Materials and Methods: Patients with nasopharyngeal, oropharyngeal, oral cavity, hypopharyngeal, or laryngeal squamous cell carcinomas treated definitively with IMRT were included. All patients without local relapse had a minimum follow-up of 12 months. Median follow-up for all patients was 24 months. Treatment plans of 85 available patients were reviewed, and the gross tumor volume (GTV) to PTV expansion method was estimated. Results: The GTVs were expanded volumetrically in 71 of 85 patients, by a median of 15 mm (range, 4-25 mm). An anatomic component to the expansion of GTV was used in 14 of 85 patients. Eighteen patients failed locoregionally, for an actuarial locoregional control rate of 77.2% at 2 years. There was no significant difference in locoregional control between patients with GTVs expanded volumetrically vs. those with a component of anatomic expansion. In patients with GTVs expanded volumetrically, no increase in risk of local failure was seen in patients with a total GTV expansion of <=15 mm. Conclusion: In this retrospective study, there was not an increased risk of local failure using smaller margins or expanding GTVs volumetrically when treating head-and-neck cancer patients definitively with IMRT.

  10. Customized Computed Tomography-Based Boost Volumes in Breast-Conserving Therapy: Use of Three-Dimensional Histologic Information for Clinical Target Volume Margins

    SciTech Connect (OSTI)

    Hanbeukers, Bianca [Department of Radiation Oncology, MAASTRO Clinic, Maastricht (Netherlands); Borger, Jacques; Ende, Piet van den [Department of Radiation Oncology, MAASTRO Clinic, Maastricht (Netherlands); Department of Radiation Oncology, Maastricht University Medical Center, Maastricht (Netherlands); Ent, Fred van der [Department of Surgery, Maasland Hospital, Sittard (Netherlands); Houben, Ruud [Department of Radiation Oncology, MAASTRO Clinic, Maastricht (Netherlands); Jager, Jos [Department of Radiation Oncology, MAASTRO Clinic, Maastricht (Netherlands); Department of Radiation Oncology, Maastricht University Medical Center, Maastricht (Netherlands); Keymeulen, Kristien [Department of Surgery, Maastricht University Medical Center, Maastricht (Netherlands); Murrer, Lars [Department of Radiation Oncology, MAASTRO Clinic, Maastricht (Netherlands); Department of Radiation Oncology, Maastricht University Medical Center, Maastricht (Netherlands); Sastrowijoto, Suprapto [Department of Pathology, Maasland Hospital, Sittard (Netherlands); Vijver, Koen van de [Department of Pathology, Maastricht University Medical Center, Maastricht (Netherlands); Boersma, Liesbeth, E-mail: liesbeth.boersma@maastro.n [Department of Radiation Oncology, Maastricht University Medical Center, Maastricht (Netherlands); Department of Radiation Oncology, MAASTRO Clinic, Maastricht (Netherlands)

    2009-11-01T23:59:59.000Z

    Purpose: To determine the difference in size between computed tomography (CT)-based irradiated boost volumes and simulator-based irradiated volumes in patients treated with breast-conserving therapy and to analyze whether the use of anisotropic three-dimensional clinical target volume (CTV) margins using the histologically determined free resection margins allows for a significant reduction of the CT-based boost volumes. Patients and Methods: The CT data from 49 patients were used to delineate a planning target volume (PTV) with isotropic CTV margins and to delineate a PTV{sub sim} that mimicked the PTV as delineated in the era of conventional simulation. For 17 patients, a PTV with anisotropic CTV margins was defined by applying customized three-dimensional CTV margins, according to the free excision margins in six directions. Boost treatment plans consisted of conformal portals for the CT-based PTVs and rectangular fields for the PTV{sub sim}. Results: The irradiated volume (volume receiving >=95% of the prescribed dose [V{sub 95}]) for the PTV with isotropic CTV margins was 1.6 times greater than that for the PTV{sub sim}: 228 cm{sup 3} vs. 147 cm{sup 3} (p < .001). For the 17 patients with a PTV with anisotropic CTV margins, the V{sub 95} was similar to the V{sub 95} for the PTV{sub sim} (190 cm{sup 3} vs. 162 cm{sup 3}; p = NS). The main determinant for the irradiated volume was the size of the excision cavity (p < .001), which was mainly related to the interval between surgery and the planning CT scan (p = .029). Conclusion: CT-based PTVs with isotropic margins for the CTV yield much greater irradiated volumes than fluoroscopically based PTVs. Applying individualized anisotropic CTV margins allowed for a significant reduction of the irradiated boost volume.

  11. The North American Atlantic outer continental margin landslides data base: Summary and observations

    SciTech Connect (OSTI)

    Booth, J.S.; O'Leary, D.W. (Geological Survey, Woods Hole, MA (USA))

    1990-06-01T23:59:59.000Z

    A compilation of published data from 179 Quaternary mass movement features was analyzed to determine the common attributes of the slides, to reveal general trends, and to classify and compare slide types. The data set was derived primarily from high-resolution, seismic-reflection data and sidescan-sonar images. In general, evidence of slope failure is found throughout the length of the margin and in all water depths. Slides have occurred on slope angles ranging from 1{degree} to 30{degree} (avg.{approximately}5{degree}); they vary in width from 0.2 to 50 km (avg. {approximately}4 km) and in length from 0.3 to 380 km (avg. {approximately}10 km) and have been reported to be as thick as 650 m. They are slightly more prevalent on open slopes than in other physiographic settings (e.g., canyons, ridges, spurs) and more commonly translational than rotational (i.e., slumps). The slides show no striking affinity for a particular depth range, either in the data set as a whole or when analyzed in terms of physiographic setting, size, slope angle, or other basis for classification. Comparison of slides found on the open slope with those found within canyons shows that the average open slope slide tends to occur at lower slope angles and is much larger (by an order of magnitude) than the average canyon slide. Regardless of the physiographic setting or other characteristic, large-scale slides (area >100 km{sup 2}) rather than small-scale slides (area <10 km{sup 2}) tend to be associated with gentle slopes ({approximately}3-4{degree}) Similarly, slides generated on steep slopes ({>=}10{degree}), regardless of other attributes, tend to be small (avg. area <5 km{sup 2}). With few exceptions, comparisons between slide categories show only minor differences.

  12. Toward a more rigorous application of margins and uncertainties within the nuclear weapons life cycle : a Sandia perspective.

    SciTech Connect (OSTI)

    Klenke, Scott Edward; Novotny, George Charles; Paulsen Robert A., Jr.; Diegert, Kathleen V.; Trucano, Timothy Guy; Pilch, Martin M.

    2007-12-01T23:59:59.000Z

    This paper presents the conceptual framework that is being used to define quantification of margins and uncertainties (QMU) for application in the nuclear weapons (NW) work conducted at Sandia National Laboratories. The conceptual framework addresses the margins and uncertainties throughout the NW life cycle and includes the definition of terms related to QMU and to figures of merit. Potential applications of QMU consist of analyses based on physical data and on modeling and simulation. Appendix A provides general guidelines for addressing cases in which significant and relevant physical data are available for QMU analysis. Appendix B gives the specific guidance that was used to conduct QMU analyses in cycle 12 of the annual assessment process. Appendix C offers general guidelines for addressing cases in which appropriate models are available for use in QMU analysis. Appendix D contains an example that highlights the consequences of different treatments of uncertainty in model-based QMU analyses.

  13. Soil Carbon Change and Net Energy Associated with Biofuel Production on Marginal Lands: A Regional Modeling Perspective

    SciTech Connect (OSTI)

    Bandaru, Varaprasad; Izaurralde, Roberto C.; Manowitz, David H.; Link, Robert P.; Zhang, Xuesong; Post, W. M.

    2013-12-01T23:59:59.000Z

    The use of marginal lands (MLs) for biofuel production has been contemplated as a promising solution for meeting biofuel demands. However, there have been concerns with spatial location of MLs, their inherent biofuel potential, and possible environmental consequences with the cultivation of energy crops. Here, we developed a new quantitative approach that integrates high-resolution land cover and land productivity maps and uses conditional probability density functions for analyzing land use patterns as a function of land productivity to classify the agricultural lands. We subsequently applied this method to determine available productive croplands (P-CLs) and non-crop marginal lands (NC-MLs) in a nine-county Southern Michigan. Furthermore, Spatially Explicit Integrated Modeling Framework (SEIMF) using EPIC (Environmental Policy Integrated Climate) was used to understand the net energy (NE) and soil organic carbon (SOC) implications of cultivating different annual and perennial production systems.

  14. Dorsal eye selector pannier (pnr) suppresses the eye fate to define dorsal margin of the Drosophila eye

    E-Print Network [OSTI]

    Kango-Singh, Madhuri

    Ă?Ă? Ă? Ă?Ă?Ă? Ă? Ă?Ă? Dorsal eye selector pannier (pnr) suppresses the eye fate to define dorsal margin of the Drosophila eye Sarah M. Oros, Meghana Tare, Madhuri Kango-Singh, Amit Singh PII: S0012-1606(10)00975-9 DOI: Oros, Sarah M., Tare, Meghana, Kango-Singh, Madhuri, Singh, Amit, Dorsal eye selector pannier (pnr

  15. 1 Dorsal eye selector pannier (pnr) suppresses the eye fate to define dorsal margin of 2 the Drosophila eye

    E-Print Network [OSTI]

    Singh, Amit

    1 Dorsal eye selector pannier (pnr) suppresses the eye fate to define dorsal margin of 2 the Drosophila eye 3 Sarah M. Oros a,b,1 , Meghana Tare b,1 , Madhuri Kango-Singh a,b,c , Amit Singh a,b,c, 4 xxxx 141516 17 Keywords: 18 Drosophila eye 19 Dorso-ventral eye patterning 20 Pannier 21 GATA-1 22

  16. Refining the pattern and relative timing of Cordilleran Ice Sheet retreat: paleogeography and evolution of late-glacial ice-marginal lakes on the southern Fraser Plateau, British Columbia

    E-Print Network [OSTI]

    Brennand, Tracy

    channels Proglacial Subglacial (small) Subglacial (large) Ice marginal ! ! ! ! Crevasse fill ! ! ! ! Grounding line ! ! ! ! Push moraine ! ! ! ! Ribbed moraine Moraines Landforms used in lake stage (foreset/topset contact) Ice-marginal channels Paleolake spillways Lake-bottom sediments Subaqueous fans

  17. Panel 3 - characterization

    SciTech Connect (OSTI)

    Erck, R.A.; Erdemir, A.; Janghsing Hsieh; Lee, R.H.; Xian Zheng Pan; Deming Shu [Argonne National Lab., IL (United States); Feldman, A. [National Inst. of Standards and Technology, Gaithersburg, MD (United States); Glass, J.T. [North Carolina State Univ., Raleigh (United States); Kleimer, R. [Coors Ceramics Co., Golden, CO (United States); Lawton, E.A. [JPL/Caltech, Pasadena, CA (United States); McHargue, C.J. [Univ. of Tennessee, Knoxville (United States)

    1993-01-01T23:59:59.000Z

    The task of this panel was to identify and prioritize needs in the area of characterization of diamond and diamond-like-carbon (DLC) films for use in the transportation industry. Until recent advances in production of inexpensive films of diamonds and DLC, it was not feasible that these materials could be mass produced. The Characterization Panel is restricting itself to identifying needs in areas that would be most useful to manufacturers and users in producing and utilizing diamond and DLC coatings in industry. These characterization needs include in-situ monitoring during growth, relation of structure to performance, and standards and definitions.

  18. Overview of New Tools to Perform Safety Analysis: BWR Station Black Out Test Case

    SciTech Connect (OSTI)

    D. Mandelli; C. Smith; T. Riley; J. Nielsen; J. Schroeder; C. Rabiti; A. Alfonsi; Cogliati; R. Kinoshita; V. Pasucci; B. Wang; D. Maljovec

    2014-06-01T23:59:59.000Z

    Dynamic Probabilistic Risk Assessment (DPRA) methodologies couple system simulator codes (e.g., RELAP, MELCOR) with simulation controller codes (e.g., RAVEN, ADAPT). While system simulator codes accurately model system dynamics deterministically, simulation controller codes introduce both deterministic (e.g., system control logic, operating procedures) and stochastic (e.g., component failures, parameter uncertainties) elements into the simulation. Typically, a DPRA is performed by: 1) sampling values of a set of parameters from the uncertainty space of interest (using the simulation controller codes), and 2) simulating the system behavior for that specific set of parameter values (using the system simulator codes). For complex systems, one of the major challenges in using DPRA methodologies is to analyze the large amount of information (i.e., large number of scenarios ) generated, where clustering techniques are typically employed to allow users to better organize and interpret the data. In this paper, we focus on the analysis of a nuclear simulation dataset that is part of the Risk Informed Safety Margin Characterization (RISMC) Boiling Water Reactor (BWR) station blackout (SBO) case study. We apply a software tool that provides the domain experts with an interactive analysis and visualization environment for understanding the structures of such high-dimensional nuclear simulation datasets. Our tool encodes traditional and topology-based clustering techniques, where the latter partitions the data points into clusters based on their uniform gradient flow behavior. We demonstrate through our case study that both types of clustering techniques complement each other in bringing enhanced structural understanding of the data.

  19. Central Characterization Program (CCP) Reconciliation of Data...

    Energy Savers [EERE]

    Central Characterization Program (CCP) Reconciliation of Data Quality Objectives (DQOs) and Reporting Characterization Data Central Characterization Program (CCP) Reconciliation of...

  20. Waste Characterization, Reduction, and Repackaging Facility ...

    Office of Environmental Management (EM)

    Waste Characterization, Reduction, and Repackaging Facility (WCRRF) Waste Characterization Glovebox Operations Waste Characterization, Reduction, and Repackaging Facility (WCRRF)...

  1. Surface expression of eastern Mediterranean slab dynamics: Neogene topographic and structural evolution of the southwest margin of the Central Anatolian Plateau, Turkey

    E-Print Network [OSTI]

    Schildgen, T. F.

    he southwest margin of the Central Anatolian Plateau has experienced multiple phases of topographic growth, including the formation of localized highs prior to the Late Miocene that were later affected by wholesale uplift ...

  2. Evaluation of overall setup accuracy and adequate setup margins in pelvic image-guided radiotherapy: Comparison of the male and female patients

    SciTech Connect (OSTI)

    Laaksomaa, Marko, E-mail: marko.laaksomaa@pshp.fi [Department of Oncology, Tampere University Hospital (TAUH), Tampere (Finland); Kapanen, Mika [Department of Oncology, Tampere University Hospital (TAUH), Tampere (Finland); Department of Medical Physics, Tampere University Hospital (TAUH), Tampere (Finland); Tulijoki, Tapio [Department of Oncology, Tampere University Hospital (TAUH), Tampere (Finland); Peltola, Seppo; Hyödynmaa, Simo [Department of Oncology, Tampere University Hospital (TAUH), Tampere (Finland); Department of Medical Physics, Tampere University Hospital (TAUH), Tampere (Finland); Kellokumpu-Lehtinen, Pirkko-Liisa [Department of Oncology, Tampere University Hospital (TAUH), Tampere (Finland)

    2014-04-01T23:59:59.000Z

    We evaluated adequate setup margins for the radiotherapy (RT) of pelvic tumors based on overall position errors of bony landmarks. We also estimated the difference in setup accuracy between the male and female patients. Finally, we compared the patient rotation for 2 immobilization devices. The study cohort included consecutive 64 male and 64 female patients. Altogether, 1794 orthogonal setup images were analyzed. Observer-related deviation in image matching and the effect of patient rotation were explicitly determined. Overall systematic and random errors were calculated in 3 orthogonal directions. Anisotropic setup margins were evaluated based on residual errors after weekly image guidance. The van Herk formula was used to calculate the margins. Overall, 100 patients were immobilized with a house-made device. The patient rotation was compared against 28 patients immobilized with CIVCO's Kneefix and Feetfix. We found that the usually applied isotropic setup margin of 8 mm covered all the uncertainties related to patient setup for most RT treatments of the pelvis. However, margins of even 10.3 mm were needed for the female patients with very large pelvic target volumes centered either in the symphysis or in the sacrum containing both of these structures. This was because the effect of rotation (p ? 0.02) and the observer variation in image matching (p ? 0.04) were significantly larger for the female patients than for the male patients. Even with daily image guidance, the required margins remained larger for the women. Patient rotations were largest about the lateral axes. The difference between the required margins was only 1 mm for the 2 immobilization devices. The largest component of overall systematic position error came from patient rotation. This emphasizes the need for rotation correction. Overall, larger position errors and setup margins were observed for the female patients with pelvic cancer than for the male patients.

  3. Prostate and Patient Intrafraction Motion: Impact on Treatment Time-Dependent Planning Margins for Patients With Endorectal Balloon

    SciTech Connect (OSTI)

    Steiner, Elisabeth, E-mail: elisabeth.steiner@akhwien.at [Division of Medical Radiation Physics, Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna, Vienna (Austria) [Division of Medical Radiation Physics, Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna, Vienna (Austria); Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna, Vienna (Austria); Georg, Dietmar [Division of Medical Radiation Physics, Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna, Vienna (Austria) [Division of Medical Radiation Physics, Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna, Vienna (Austria); Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna, Vienna (Austria); Christian Doppler Laboratory for Medical Radiation Research for Radiation Oncology, Medical University of Vienna, Vienna (Austria); Goldner, Gregor [Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna, Vienna (Austria) [Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna, Vienna (Austria); Christian Doppler Laboratory for Medical Radiation Research for Radiation Oncology, Medical University of Vienna, Vienna (Austria); Stock, Markus [Division of Medical Radiation Physics, Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna, Vienna (Austria) [Division of Medical Radiation Physics, Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna, Vienna (Austria); Department of Radiation Oncology, Comprehensive Cancer Center, Medical University of Vienna, Vienna (Austria); Christian Doppler Laboratory for Medical Radiation Research for Radiation Oncology, Medical University of Vienna, Vienna (Austria)

    2013-07-15T23:59:59.000Z

    Purpose: To investigate intrafraction prostate and patient motion during different radiation therapy treatments as a function of treatment time; included were prostate patients with an endorectal balloon (ERB). Margins accounting for setup uncertainties and intrafraction motion were determined. Methods and Materials: The study included 17 patients undergoing prostate cancer radiation therapy. All patients received 3 fiducial gold markers implanted in the prostate and were then immobilized in the supine position with a knee support and treated with an ERB. Twelve patients with intermediate risk for pelvic lymph node metastases received intensity modulated radiation therapy (IMRT), and 5 patients at low risk received a 4-field box treatment. After setup based on skin marks, patients were imaged with a stereoscopic imaging system. If the marker displacement exceeded a 3-mm tolerance relative to planning computed tomography, patients were shifted and verification images were taken. All patients underwent additional imaging after treatment; IMRT patients also received additional imaging at halftime of treatment. Prostate and bone drifts were evaluated as a function of treatment time for more than 600 fractions, and margins were extracted. Results: Patient motion evaluated by bone match was strongly patient dependent but in general was smallest in the superior-inferior (SI) direction. Prostate drifts were less patient dependent, showing an increase with treatment time in the SI and anterior-posterior (AP) directions. In the lateral (LAT) direction, the prostate stayed rather stable. Mean treatment times were 5.5 minutes for 4-field box, 10 minutes for 5-field boost IMRT, and 15 minutes or more for 9-field boost and 9-field pelvic IMRT treatments. Margins resulted in 2.2 mm, 3.9 mm, and 4.3 mm for 4-field box; 3.7 mm, 2.6 mm, and 3.6 mm for 5-field boost IMRT; 2.3 mm, 3.9 mm, and 6.2 mm for 9-field boost IMRT; and 4.2 mm, 5.1 mm, and 6.6 mm for 9-field pelvic IMRT in the LAT, SI, and AP directions, respectively. Conclusion: Intrafraction prostate and patient displacement increased with treatment time, showing different behaviors for the single directions of movement. Repositioning of the patients during long treatments or shorter treatment times will be necessary to further reduce the treatment margin.

  4. Two-stream cyclotron radiative instabilities due to the marginally mirror-trapped fraction for fustion alphas in tokamaks

    SciTech Connect (OSTI)

    Arunasalam, V.

    1995-07-01T23:59:59.000Z

    It is shown here that the marginally mirror-trapped fraction of the newly-born fusion alpha particles in the deuterium-tritium (DT) reaction dominated tokamak plasmas can induce a two-stream cyclotron radiative instability for the fast Alfven waves propagating near the harmonics of the alpha particle cyclotron frequency {omega}{sub c{alpha}}. This can explain both the experimentally observed time behavior and the spatially localized origin of the fusion product ion cyclotron emission (ICE) in TFTR at frequencies {omega} {approx} m{omega}{sub c{alpha}}.

  5. SSI sensitivity studies and model improvements for the US NRC Seismic Safety Margins Research Program. Rev. 1

    SciTech Connect (OSTI)

    Johnson, J.J.; Maslenikov, O.R.; Benda, B.J.

    1984-10-01T23:59:59.000Z

    The Seismic Safety Margins Research Program (SSMRP) is a US NRC-funded program conducted by Lawrence Livermore National Laboratory. Its goal is to develop a complete fully coupled analysis procedure for estimating the risk of an earthquake-induced radioactive release from a commercial nuclear power plant. In Phase II of the SSMRP, the methodology was applied to the Zion nuclear power plant. Three topics in the SSI analysis of Zion were investigated and reported here - flexible foundation modeling, structure-to-structure interaction, and basemat uplift. The results of these investigations were incorporated in the SSMRP seismic risk analysis. 14 references, 51 figures, 13 tables.

  6. Economic Impacts of Changes in United States Rice Price Variability on Market Efficiency, Marketing Margin and Producer Viability. 

    E-Print Network [OSTI]

    Grant, W.R.; Richardson, J.W.; Brorsen, B.W.; Rister, M.E

    1984-01-01T23:59:59.000Z

    ------.---------------- - , ,,,, --,,,,,-- -,/""----- ... ... .,,;" 2.5-~~---.---r--.---~--.--.--~---r--.---~--~~--~ 55 57 59 61 63 65 67 69 71 73 75 77 79 81 83 YEAR Figure 7. Season average rice prices, 7955-82. Data Source: USDA- fRS, Rice Outlook and Situation 3 MARKET EFFICIENCY METHODS Sporleder...% level. Annual Texas mill prices (adjusted to a rough rice equivalence by a factor of 0.71) (USDA, Rice Situation and Outlook) and annual Texas farm prices were used to calculate the margins. The supply of marketing services was estimated...

  7. Carbonate depositional environments and facies of the shelf margin and outer shelf, Lower Cretaceous Sligo Formation, south Texas

    E-Print Network [OSTI]

    Kirkland, Brenda Lee

    1986-01-01T23:59:59.000Z

    -resistant reefs of the Sligo Formation. The Permian Capitan reef complex in southeastern New Mexico is an ancient analog for low-lying rudist banks and shoal deposits of the Sligo Formation. Porosity in rocks of the Sligo shelf margin is largely secondary.... I am very grateful to Tenneco for their financial support over the course of this study; I wish to thank Mr. R. D. Beardsly for his assistance in obtaining this support. Mr. Edward H. McGlasson of Mobil Producing Texas and New Mexico generously...

  8. WebWorkload Characterization

    E-Print Network [OSTI]

    Zilles, Craig

    WebWorkload Characterization at a Micro­architectural Level Ramesh Radhakrishnan, Lizy John Laboratory, IBM Austin, TX. #12; Goals of this study n We study the behavior of modernWeb server applications programs to understand how they interact with the underlyingWeb server, hardware and OS under realistic

  9. Applying reservoir characterization technology

    SciTech Connect (OSTI)

    Lake, L.W.

    1994-12-31T23:59:59.000Z

    While reservoir characterization is an old discipline, only within the last 10 years have engineers and scientists been able to make quantitative descriptions, due mostly to improvements in high-resolution computational power, sophisticated graphics, and geostatistics. This paper summarizes what has been learned during the past decade by using these technologies.

  10. Radiotherapy to Improve Local Control Regardless of Surgical Margin and Malignancy Grade in Extremity and Trunk Wall Soft Tissue Sarcoma: A Scandinavian Sarcoma Group Study

    SciTech Connect (OSTI)

    Jebsen, Nina L. [Department of Surgical Sciences, University of Bergen Faculty of Medicine, Bergen (Norway); Department of Oncology, Haukeland University Hospital, Bergen (Norway)], E-mail: njeb@helse-bergen.no; Trovik, Clement S. [Department of Oncology, Haukeland University Hospital, Bergen (Norway); Department of Orthopedics, Haukeland University Hospital, Bergen (Norway); Bauer, Henrik C.F. [Department of Orthopedics, Karolinska Hospital, Stockholm (Sweden); Rydholm, Anders [Department of Orthopedics, Lund University Hospital, Lund (Sweden); Monge, Odd R. [Department of Oncology, Haukeland University Hospital, Bergen (Norway); Hall, Kirsten Sundby [Cancer Clinic, Rikshospitalet-Radiumhospitalet Medical Center, Oslo (Norway); Alvegard, Thor [Department of Cancer Epidemiology, Lund University Hospital, Lund (Sweden); Bruland, Oyvind S. [Cancer Clinic, Rikshospitalet-Radiumhospitalet Medical Center, Oslo (Norway); University of Oslo, Faculty Group, Norwegian Radium Hospital, Oslo (Norway)

    2008-07-15T23:59:59.000Z

    Purpose: Adjuvant radiotherapy has during the past decades become increasingly used in the treatment of localized soft tissue sarcoma. We evaluated the effect of radiotherapy (RT) on local recurrence rates (LRRs) in Scandinavia between 1986 and 2005. Methods and Materials: A total of 1,093 adult patients with extremity or trunk wall soft tissue sarcoma treated at four Scandinavian sarcoma centers were stratified according to the treatment period (1986-1991, 1992-1997, and 1998-2005). The use of adjuvant RT, quality of the surgical margin, interval between surgery and RT, and LRR were analyzed. The median follow-up was 5 years. Results: The use of RT (77% treated postoperatively) increased from 28% to 53%, and the 5-year LRR decreased from 27% to 15%. The rate of wide surgical margins did not increase. The risk factors for local recurrence were histologic high-grade malignancy (hazard ratio [HR], 5), an intralesional (HR, 6) or marginal (HR, 3) surgical margin, and no RT (HR, 3). The effect of RT on the LRR was also significant after a wide margin resection and in low-grade malignant tumors. The LRR was the same after preoperative and postoperative RT. The median interval from surgery to the start of RT was 7 weeks, and 98% started RT within 4 months. The LRR was the same in patients who started treatment before and after 7 weeks. Conclusion: The results of our study have shown that adjuvant RT effectively prevents local recurrence in soft tissue sarcoma, irrespective of the tumor depth, malignancy grade, and surgical margin status. The effect was most pronounced in deep-seated, high-grade tumors, even when removed with a wide surgical margin.

  11. Analysis of the efficiency and potential collapse of the ensemble Kalman filter for marginal and joint posteriors

    E-Print Network [OSTI]

    Morzfeld, Matthias

    2015-01-01T23:59:59.000Z

    In data assimilation one updates the state of a numerical model with information from sparse and noisy observations of the model's state. A popular approach to data assimilation in geophysical applications is the ensemble Kalman filter (EnKF). An alternative approach is particle filtering and, recently, much theoretical work has been done to understand the abilities and limitations of particle filters. Here we extend this work to EnKF. First we explain that EnKF and particle filters solve different problems: the EnKF approximates a specific marginal of the joint posterior of particle filters. We then perform a linear analysis of the EnKF as a sequential sampling algorithm for the joint posterior (i.e. as a particle filter), and show that the EnKF collapses on this problem in the exact same way and under similar conditions as particle filters. However, it is critical to realize that the collapse of the EnKF on the joint posterior does not imply its collapse on the marginal posterior. This raises the question, ...

  12. WFPC2 CTE Characterization

    E-Print Network [OSTI]

    Andrew E. Dolphin

    2002-12-04T23:59:59.000Z

    The limiting factor of the accuracy of WFPC2 photometry is the CTE loss, which has increased to the level of 50% or more for faint stars at the top of the chips. I describe recent work on characterizing this effect, and provide improved equations for CTE correction. I also examine issues affecting background measurement, which if not done correctly can introduce artificial nonlinearities into photometry.

  13. Threat Characterization: Trajectory Dynamics

    E-Print Network [OSTI]

    Russell Schweickart; Clark Chapman; Dan Durda; Bill Bottke; David Nesvorny; Piet Hut

    2006-08-15T23:59:59.000Z

    Given a primary interest in "mitigation of the potential hazard" of near-Earth objects impacting the Earth, the subject of characterization takes on an aspect not normally present when considering asteroids as abstract bodies. Many deflection concepts are interested in the classic geophysical characteristics of asteroids when considering the physical challenge of modifying their orbits in order to cause them to subsequently miss an impact with Earth. Yet for all deflection concepts there are characteristics of the threat which overwhelm these traditional factors. For example, a close gravitational encounter with Earth some years or decades prior to impact can reduce the velocity change necessary for deflection by several orders of magnitude if the deflection precedes the close encounter (or encounters). Conversely this "benefit" comes at a "price"; a corresponding increase in the accuracy of tracking required to determine the probability of impact. Societal issues, both national and international, also characterize the NEO deflection process and these may strongly contend with the purely technical issues normally considered. Therefore critical factors not normally considered must be brought into play as one characterizes the threat of NEO impacts.

  14. Hypervelocity microparticle characterization

    SciTech Connect (OSTI)

    Idzorek, G.C.

    1996-11-01T23:59:59.000Z

    To protect spacecraft from orbital debris requires a basic understanding of the processes involved in hypervelocity impacts and characterization of detectors to measure the space environment. Both require a source of well characterized hypervelocity particles. Electrostatic acceleration of charged microspheres provides such a source. Techniques refined at the Los Alamos National Laboratory provided information on hypervelocity impacts of particles of known mass and velocity ranging from 20-1000 nm diameter and 1-100 km/s. A Van De Graaff generator operating at 6 million volts was used to accelerate individual carbonyl iron microspheres produced by a specially designed particle source. Standard electrostatic lenses and steering were used to control the particles flight path. Charge sensitive pickoff tubes measured the particle charge and velocity in- flight without disturbing the particle. This information coupled with the measured Van De Graaff terminal voltage allowed calculation of the particle energy, mass, momenta and (using an assumed density) the size. Particles with the desired parameters were then electrostatically directed to a target chamber. Targets used in our experiments included cratering and foil puncture targets, microphone momentum enhancement detectors, triboluminescent detectors, and ``splash`` charge detectors. In addition the system has been used to rapidly characterize size distributions of conductive plastic particles and potentially provide a method of easily sorting microscopic particles by size.

  15. Characterization of Mineralogical & Genetic Events

    SciTech Connect (OSTI)

    Dr.Timothy Magnuson

    2001-11-30T23:59:59.000Z

    OAK 270 - characterization of mineralogical and molecular genetic events assoc. w/colonization of mineral surfaces by geobacter

  16. Central Characterization Program (CCP) Transuranic Waste Characterizat...

    Office of Environmental Management (EM)

    Characterization Quality Assurance Project Plan Central Characterization Program (CCP) Transuranic Waste Characterization Quality Assurance Project Plan This document was used to...

  17. Optical Characterization Laboratory (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2011-10-01T23:59:59.000Z

    This fact sheet describes the purpose, lab specifications, applications scenarios, and information on how to partner with NREL's Optical Characterization Laboratory at the Energy Systems Integration Facility. The Optical Characterization Laboratory at NREL's Energy Systems Integration Facility (ESIF) conducts optical characterization of large solar concentration devices. Concentration solar power (CSP) mirror panels and concentrating solar systems are tested with an emphasis is on measurement of parabolic trough mirror panels. The Optical Characterization Laboratory provides state-of-the-art characterization and testing capabilities for assessing the optical surface quality and optical performance for various CSP technologies including parabolic troughs, linear Fresnel, dishes, and heliostats.

  18. TRU waste characterization chamber gloveboxes.

    SciTech Connect (OSTI)

    Duncan, D. S.

    1998-07-02T23:59:59.000Z

    Argonne National Laboratory-West (ANL-W) is participating in the Department of Energy's (DOE) National Transuranic Waste Program in support of the Waste Isolation Pilot Plant (WIPP). The Laboratory's support currently consists of intrusive characterization of a selected population of drums containing transuranic waste. This characterization is performed in a complex of alpha containment gloveboxes termed the Waste Characterization Gloveboxes. Made up of the Waste Characterization Chamber, Sample Preparation Glovebox, and the Equipment Repair Glovebox, they were designed as a small production characterization facility for support of the Idaho National Engineering and Environmental Laboratory (INEEL). This paper presents salient features of these gloveboxes.

  19. Nondestructive material characterization

    DOE Patents [OSTI]

    Deason, Vance A. (Idaho Falls, ID); Johnson, John A. (Idaho Falls, ID); Telschow, Kenneth L. (Idaho Falls, ID)

    1991-01-01T23:59:59.000Z

    A method and apparatus for nondestructive material characterization, such as identification of material flaws or defects, material thickness or uniformity and material properties such as acoustic velocity. The apparatus comprises a pulsed laser used to excite a piezoelectric (PZ) transducer, which sends acoustic waves through an acoustic coupling medium to the test material. The acoustic wave is absorbed and thereafter reflected by the test material, whereupon it impinges on the PZ transducer. The PZ transducer converts the acoustic wave to electrical impulses, which are conveyed to a monitor.

  20. Evaluating low oxygen and pH variation and its effects on invertebrate early life stages on upwelling margins /

    E-Print Network [OSTI]

    Frieder, Christina A.

    2013-01-01T23:59:59.000Z

    CO 32- ] since uranium in seawater complexes with carbonateU incorporation among taxa Uranium in seawater occurs in aCharacterization of uranium(VI) in seawater. Limnology and

  1. DEVELOPMENT OF A COASTAL MARGIN OBSERVATION AND ASSESSMENT SYSTEM (CMOAS) TO CAPTURE THE EPISODIC EVENTS IN A SHALLOW BAY

    E-Print Network [OSTI]

    Islam, Mohammad S.

    2010-07-14T23:59:59.000Z

    for the implementation of observational systems in other dynamic ecosystems for characterizing and predicting other episodic events such as harmful algal blooms, accidental oil spills, sediment resuspension events, etc. State-of-the-art sensor technologies are involved...

  2. Mound facility physical characterization

    SciTech Connect (OSTI)

    Tonne, W.R.; Alexander, B.M.; Cage, M.R.; Hase, E.H.; Schmidt, M.J.; Schneider, J.E.; Slusher, W.; Todd, J.E.

    1993-12-01T23:59:59.000Z

    The purpose of this report is to provide a baseline physical characterization of Mound`s facilities as of September 1993. The baseline characterizations are to be used in the development of long-term future use strategy development for the Mound site. This document describes the current missions and alternative future use scenarios for each building. Current mission descriptions cover facility capabilities, physical resources required to support operations, current safety envelope and current status of facilities. Future use scenarios identify potential alternative future uses, facility modifications required for likely use, facility modifications of other uses, changes to safety envelope for the likely use, cleanup criteria for each future use scenario, and disposition of surplus equipment. This Introductory Chapter includes an Executive Summary that contains narrative on the Functional Unit Material Condition, Current Facility Status, Listing of Buildings, Space Plans, Summary of Maintenance Program and Repair Backlog, Environmental Restoration, and Decontamination and Decommissioning Programs. Under Section B, Site Description, is a brief listing of the Site PS Development, as well as Current Utility Sources. Section C contains Site Assumptions. A Maintenance Program Overview, as well as Current Deficiencies, is contained within the Maintenance Program Chapter.

  3. Carbon Characterization Laboratory Report

    SciTech Connect (OSTI)

    David Swank; William Windes; D.C. Haggard; David Rohrbaugh; Karen Moore

    2009-03-01T23:59:59.000Z

    The newly completed Idaho National Laboratory (INL) Carbon Characterization Laboratory (CCL) is located in Lab-C20 of the Idaho National Laboratory Research Center. This laboratory was established under the Next Generation Nuclear Plant (NGNP) Project to support graphite research and development activities. The CCL is designed to characterize and test carbon-based materials such as graphite, carbon-carbon composites, and silicon-carbide composite materials. The laboratory is fully prepared to measure material properties for nonirradiated carbon-based materials. Plans to establish the laboratory as a radiological facility within the next year are definitive. This laboratory will be modified to accommodate irradiated materials, after which it can be used to perform material property measurements on both irradiated and nonirradiated carbon-based material. Instruments, fixtures, and methods are in place for preirradiation measurements of bulk density, thermal diffusivity, coefficient of thermal expansion, elastic modulus, Young’s modulus, Shear modulus, Poisson ratio, and electrical resistivity. The measurement protocol consists of functional validation, calibration, and automated data acquisition.

  4. Distributed Energy Technology Characterization (Desiccant Technologies...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Characterization (Desiccant Technologies), January 2004 Distributed Energy Technology Characterization (Desiccant Technologies), January 2004 The purpose of this report is to...

  5. Materials Synthesis and Characterization | Center for Functional...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Materials Synthesis and Characterization Facility materials synthesis The Materials Synthesis and Characterization Facility includes laboratories for producing nanostructured...

  6. Evaluation and Characterization of Lightweight Materials: Success...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Characterization of Lightweight Materials: Success Stories from the High Temperature Materials Laboratory (HTML) User Program Evaluation and Characterization of Lightweight...

  7. Advanced Battery Materials Characterization: Success stories...

    Broader source: Energy.gov (indexed) [DOE]

    Advanced Battery Materials Characterization: Success stories from the High Temperature Materials Laboratory (HTML) User Program Advanced Battery Materials Characterization: Success...

  8. CLEERS Activities: Diesel Soot Filter Characterization & NOx...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Activities: Diesel Soot Filter Characterization & NOx Control Fundamentals CLEERS Activities: Diesel Soot Filter Characterization & NOx Control Fundamentals 2009 DOE Hydrogen...

  9. Mechanical Characterization of Fuel Injector Piezoactuators and...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Characterization of Fuel Injector Piezoactuators and their Piezoceramics Mechanical Characterization of Fuel Injector Piezoactuators and their Piezoceramics 2007 Diesel...

  10. Seismic Fracture Characterization Methods for Enhanced Geothermal...

    Broader source: Energy.gov (indexed) [DOE]

    Seismic Fracture Characterization Methods for Enhanced Geothermal Systems Seismic Fracture Characterization Methods for Enhanced Geothermal Systems Project objective: Make Seismic...

  11. Seismic Fracture Characterization Methods for Enhanced Geothermal...

    Broader source: Energy.gov (indexed) [DOE]

    Seismic Fracture Characterization Methods for Enhanced Geothermal Systems; 2010 Geothermal Technology Program Peer Review Report Seismic Fracture Characterization Methods for...

  12. Mixed waste characterization reference document

    SciTech Connect (OSTI)

    NONE

    1997-09-01T23:59:59.000Z

    Waste characterization and monitoring are major activities in the management of waste from generation through storage and treatment to disposal. Adequate waste characterization is necessary to ensure safe storage, selection of appropriate and effective treatment, and adherence to disposal standards. For some wastes characterization objectives can be difficult and costly to achieve. The purpose of this document is to evaluate costs of characterizing one such waste type, mixed (hazardous and radioactive) waste. For the purpose of this document, waste characterization includes treatment system monitoring, where monitoring is a supplement or substitute for waste characterization. This document establishes a cost baseline for mixed waste characterization and treatment system monitoring requirements from which to evaluate alternatives. The cost baseline established as part of this work includes costs for a thermal treatment technology (i.e., a rotary kiln incinerator), a nonthermal treatment process (i.e., waste sorting, macronencapsulation, and catalytic wet oxidation), and no treatment (i.e., disposal of waste at the Waste Isolation Pilot Plant (WIPP)). The analysis of improvement over the baseline includes assessment of promising areas for technology development in front-end waste characterization, process equipment, off gas controls, and monitoring. Based on this assessment, an ideal characterization and monitoring configuration is described that minimizes costs and optimizes resources required for waste characterization.

  13. Appears in IEEE Conf. on Computer Vision and Pattern Recognition, Madison, Wisconsin, 2003. Feature Selection by Maximum Marginal Diversity: optimality and implications

    E-Print Network [OSTI]

    Vasconcelos, Nuno M.

    is a discriminant quantity and can be computed with great efficiency, the principle of maximum marginal diver- sity solutions, and 2) show that there is a family of classification problems for which the two are identical with currently predominant criteria such as energy compaction, and 3) the extracted features are detectors

  14. European Transport Conference 2009, October 5-7, Leeuwenhorst, The Netherlands 1 / 12 On the marginal cost of road congestion: an evaluation

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    environmental effects: the reduced speeds in urban areas increase energy consumption, greenhouse gas emissions, 1969 ; Boiteux et al, 1994). The French Department of Transport commissioned us to update sector. We provide a method for aggregating local marginal costs and demonstrate how to use

  15. HETEROGENEOUS OXYGEN ISOTOPIC COMPOSITION OF A COMPLEX WARK-LOVERING RIM AND THE MARGIN OF A REFRACTORY INCLUSION FROM LEOVILLE. J. I. Simon1

    E-Print Network [OSTI]

    Grossman, Lawrence

    HETEROGENEOUS OXYGEN ISOTOPIC COMPOSITION OF A COMPLEX WARK-LOVERING RIM AND THE MARGIN inclusion interiors. Extreme oxygen isotopic heterogeneity measured in CAIs has been explained by mixing between distinct oxygen gas reservoirs in the nebula [13]. Some WL rims contain relatively simple mineral

  16. Photoelectronic characterization of heterointerfaces.

    SciTech Connect (OSTI)

    Brumbach, Michael Todd

    2012-02-01T23:59:59.000Z

    In many devices such as solar cells, light emitting diodes, transistors, etc., the performance relies on the electronic structure at interfaces between materials within the device. The objective of this work was to perform robust characterization of hybrid (organic/inorganic) interfaces by tailoring the interfacial region for photoelectron spectroscopy. Self-assembled monolayers (SAM) were utilized to induce dipoles of various magnitudes at the interface. Additionally, SAMs of molecules with varying dipolar characteristics were mixed into spatially organized structures to systematically vary the apparent work function. Polymer thin films were characterized by depositing films of varying thicknesses on numerous substrates with and without interfacial modifications. Hard X-ray photoelectron spectroscopy (HAXPES) was performed to evaluate a buried interface between indium tin oxide (ITO), treated under various conditions, and poly(3-hexylthiophene) (P3HT). Conducting polymer films were found to be sufficiently conducting such that no significant charge redistribution in the polymer films was observed. Consequently, a further departure from uniform substrates was taken whereby electrically disconnected regions of the substrate presented ideally insulating interfacial contacts. In order to accomplish this novel strategy, interdigitated electrodes were used as the substrate. Conducting fingers of one half of the electrodes were electrically grounded while the other set of electrodes were electronically floating. This allowed for the evaluation of substrate charging on photoelectron spectra (SCOPES) in the presence of overlying semiconducting thin films. Such an experiment has never before been reported. This concept was developed out of the previous experiments on interfacial modification and thin film depositions and presents new opportunities for understanding chemical and electronic changes in a multitude of materials and interfaces.

  17. Nuclear power plant cable materials : review of qualification and currently available aging data for margin assessments in cable performance.

    SciTech Connect (OSTI)

    Celina, Mathias Christopher; Gillen, Kenneth Todd; Lindgren, Eric Richard

    2013-05-01T23:59:59.000Z

    A selective literature review was conducted to assess whether currently available accelerated aging and original qualification data could be used to establish operational margins for the continued use of cable insulation and jacketing materials in nuclear power plant environments. The materials are subject to chemical and physical degradation under extended radiationthermal- oxidative conditions. Of particular interest were the circumstances under which existing aging data could be used to predict whether aged materials should pass loss of coolant accident (LOCA) performance requirements. Original LOCA qualification testing usually involved accelerated aging simulations of the 40-year expected ambient aging conditions followed by a LOCA simulation. The accelerated aging simulations were conducted under rapid accelerated aging conditions that did not account for many of the known limitations in accelerated polymer aging and therefore did not correctly simulate actual aging conditions. These highly accelerated aging conditions resulted in insulation materials with mostlyinert' aging processes as well as jacket materials where oxidative damage dropped quickly away from the air-exposed outside jacket surface. Therefore, for most LOCA performance predictions, testing appears to have relied upon heterogeneous aging behavior with oxidation often limited to the exterior of the cable cross-section - a situation which is not comparable with the nearly homogenous oxidative aging that will occur over decades under low dose rate and low temperature plant conditions. The historical aging conditions are therefore insufficient to determine with reasonable confidence the remaining operational margins for these materials. This does not necessarily imply that the existing 40-year-old materials would fail if LOCA conditions occurred, but rather that unambiguous statements about the current aging state and anticipated LOCA performance cannot be provided based on original qualification testing data alone. The non-availability of conclusive predictions for the aging conditions of 40-year-old cables implies that the same levels of uncertainty will remain for any re-qualification or extended operation of these cables. The highly variable aging behavior of the range of materials employed also implies that simple, standardized aging tests are not sufficient to provide the required aging data and performance predictions for all materials. It is recommended that focused studies be conducted that would yield the material aging parameters needed to predict aging behaviors under low dose, low temperature plant equivalent conditions and that appropriately aged specimens be prepared that would mimic oxidatively-aged 40- to 60- year-old materials for confirmatory LOCA performance testing. This study concludes that it is not sufficient to expose materials to rapid, high radiation and high temperature levels with subsequent LOCA qualification testing in order to predictively quantify safety margins of existing infrastructure with regard to LOCA performance. We need to better understand how cable jacketing and insulation materials have degraded over decades of power plant operation and how this aging history relates to service life prediction and the performance of existing equipment to withstand a LOCA situation.

  18. Please cite this article in press as: Graff Zivin, J.S., et al., Spatial and temporal heterogeneity of marginal emissions: Implications for electric cars and other electricity-shifting policies. J. Econ. Behav. Organ. (2014),

    E-Print Network [OSTI]

    Kotchen, Matthew J.

    2014-01-01T23:59:59.000Z

    of marginal emissions: Implications for electric cars and other electricity-shifting policies. J. Econ. Behav.elsevier.com/locate/jebo Spatial and temporal heterogeneity of marginal emissions: Implications for electric cars and other electricity-shifting policies Joshua S. Graff Zivina,d, , Matthew J. Kotchenb,d , Erin T. Mansurc

  19. Gas Explosion Characterization, Wave Propagation

    E-Print Network [OSTI]

    s & Dt^boooo^j Risø-R-525 Gas Explosion Characterization, Wave Propagation (Small-Scale Experiments EXPLOSION CHARACTERIZATION, WAVE PROPAGATION (Small-Scale Experiments) G.C. Larsen Abstract. A number characteristics 14 3.5. Characteristics of the primary pressure wave 21 3.6. Pressure propagation over a hard

  20. CHARACTERIZATION SUMMARY AUGUST 21, 2003

    E-Print Network [OSTI]

    on the Site in accordance with the approved Sampling and Analysis Plan (SAP), the Characterization Survey Work Plan (CSWP), and using the guidance provided in Multi-Agency Radiation Survey and Site Investigation and to evaluate a variety of management options. The Site characterization methods included the following

  1. UNCORRECTEDPROOF Tropical Margins

    E-Print Network [OSTI]

    Benitez-Nelson, Claudia

    warmer than other parts of the earth. Higher solar energy inputs are about the only rational (but still al., 2006; Juillet-Leclerc et al., G.J. Brunskill ( ) Alligator Creek, Queensland 4816, Australia e

  2. Electricity prices in a competitive environment: Marginal cost pricing of generation services and financial status of electric utilities. A preliminary analysis through 2015

    SciTech Connect (OSTI)

    NONE

    1997-08-01T23:59:59.000Z

    The emergence of competitive markets for electricity generation services is changing the way that electricity is and will be priced in the United States. This report presents the results of an analysis that focuses on two questions: (1) How are prices for competitive generation services likely to differ from regulated prices if competitive prices are based on marginal costs rather than regulated {open_quotes}cost-of-service{close_quotes} pricing? (2) What impacts will the competitive pricing of generation services (based on marginal costs) have on electricity consumption patterns, production costs, and the financial integrity patterns, production costs, and the financial integrity of electricity suppliers? This study is not intended to be a cost-benefit analysis of wholesale or retail competition, nor does this report include an analysis of the macroeconomic impacts of competitive electricity prices.

  3. Expedited Site Characterization Geophysics: Geophysical Methods and Tools for Site Characterization

    E-Print Network [OSTI]

    Goldstein, N.E.

    2009-01-01T23:59:59.000Z

    Site Characterization Geophysics CONTENTS INTRODUCTIONSite Characterization Geophysics SELF-POTENTIAL Referencesand Environmental Geophysics, S. H. Ward, ed. (Soc. Expl.

  4. A new P-velocity model for the Tethyan margin from a scaled S-velocity model and the inversion of P-and PKP-delay times

    E-Print Network [OSTI]

    van der Lee, Suzan

    A new P-velocity model for the Tethyan margin from a scaled S-velocity model and the inversion of P- and PKP-delay times Sung-Joon Chang a, , Suzan Van der Lee a , Megan P. Flanagan b a Dept. of Earth Livermore National Laboratory, P.O. Box 808, L-205, Livermore, CA 94551, USA a r t i c l e i n f o Article

  5. 324 Building Baseline Radiological Characterization

    SciTech Connect (OSTI)

    R.J. Reeder, J.C. Cooper

    2010-06-24T23:59:59.000Z

    This report documents the analysis of radiological data collected as part of the characterization study performed in 1998. The study was performed to create a baseline of the radiological conditions in the 324 Building.

  6. Cryogenic characterization of Josephson junctions

    E-Print Network [OSTI]

    Brown, Keith Andrew

    2006-01-01T23:59:59.000Z

    Cryogenic characterization is a crucial part of understanding the behavior of low-temperature quantum electronics. Reliable device testing provides the feedback to fabrication process development, facilitating the rapid ...

  7. Reservoir characterization using wavelet transforms

    E-Print Network [OSTI]

    Rivera Vega, Nestor

    2004-09-30T23:59:59.000Z

    Automated detection of geological boundaries and determination of cyclic events controlling deposition can facilitate stratigraphic analysis and reservoir characterization. This study applies the wavelet transformation, a recent advance in signal...

  8. Assessing effects of highway bridge deck runoff on near-by recieving waters in coastal margins using remote monitoring techniques

    E-Print Network [OSTI]

    Nwaneshiudu, Oke

    2005-02-17T23:59:59.000Z

    point sources), highway runnoff can be considered a serious problem if not handeled properly (FHWA 1999). If the required best management practices are not taken for excess contaminant removal, highway runnoff can have adverse effects. The most... waters, is rainfall. The main objective of this runoff study was to characterize and assess the quantity and quality of the storm water runoff of a bridge deck that discharged into a receiving water body. The bridge deck and the creek were located...

  9. NMR characterization of thin films

    DOE Patents [OSTI]

    Gerald II, Rex E.; Klingler, Robert J.; Rathke, Jerome W.; Diaz, Rocio; Vukovic, Lela

    2010-06-15T23:59:59.000Z

    A method, apparatus, and system for characterizing thin film materials. The method, apparatus, and system includes a container for receiving a starting material, applying a gravitational force, a magnetic force, and an electric force or combinations thereof to at least the starting material, forming a thin film material, sensing an NMR signal from the thin film material and analyzing the NMR signal to characterize the thin film of material.

  10. NMR characterization of thin films

    DOE Patents [OSTI]

    Gerald, II, Rex E. (Brookfield, IL); Klingler, Robert J. (Glenview, IL); Rathke, Jerome W. (Homer Glen, IL); Diaz, Rocio (Chicago, IL); Vukovic, Lela (Westchester, IL)

    2008-11-25T23:59:59.000Z

    A method, apparatus, and system for characterizing thin film materials. The method, apparatus, and system includes a container for receiving a starting material, applying a gravitational force, a magnetic force, and an electric force or combinations thereof to at least the starting material, forming a thin film material, sensing an NMR signal from the thin film material and analyzing the NMR signal to characterize the thin film of material.

  11. DISSERTATION DEVICE CHARACTERIZATION OF CADMIUM TELLURIDE PHOTOVOLTAICS

    E-Print Network [OSTI]

    Sites, James R.

    DISSERTATION DEVICE CHARACTERIZATION OF CADMIUM TELLURIDE PHOTOVOLTAICS Submitted by Russell M Reserved #12;ABSTRACT DEVICE CHARACTERIZATION OF CADMIUM TELLURIDE PHOTOVOLTAICS Thin-film photovoltaics

  12. Waste Characterization, Reduction, and Repackaging Facility ...

    Office of Environmental Management (EM)

    Operations, EP-WCRR-WO-DOP-0233 Waste Characterization, Reduction, and Repackaging Facility (WCRRF) Waste Characterization Glovebox Operations, EP-WCRR-WO-DOP-0233 The documents...

  13. Materials Characterization Capabilities at the HTML: Surface...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    density analysis of forming samples using advanced characterization techniques Materials Characterization Capabilities at the HTML: SurfaceSub-surface dislocation density...

  14. Chemical Characterization of Crude Petroleum Using Nanospray...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    solvents that are rarely used for petroleum characterization. Citation: Eckert PA, PJ Roach, A Laskin, and J Laskin.2012."Chemical Characterization of Crude Petroleum Using...

  15. Sandia National Laboratories: Wave Energy Resource Characterization...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    eECEnergyComputational Modeling & SimulationWave Energy Resource Characterization at US Test Sites Wave Energy Resource Characterization at US Test Sites Sandia Report Presents...

  16. Synthesis, Characterization, and Catalytic Function of Novel...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Characterization, and Catalytic Function of Novel Highly Dispersed Tungsten Oxide Catalysts on Mesoporous Silica . Synthesis, Characterization, and Catalytic Function of Novel...

  17. Preparation, Characterization, and Catalytic Properties of Tungsten...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Preparation, Characterization, and Catalytic Properties of Tungsten Trioxide Cyclic Trimers on FeO(111)Pt(111). Preparation, Characterization, and Catalytic Properties of Tungsten...

  18. Implantation, Activation, Characterization and Prevention/Mitigation...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Activation, Characterization and PreventionMitigation of Internal Short Circuits in Lithium-Ion Cells Implantation, Activation, Characterization and PreventionMitigation of...

  19. Formation, characterization and reactivity of adsorbed oxygen...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Formation, characterization and reactivity of adsorbed oxygen on BaOPt(111). Formation, characterization and reactivity of adsorbed oxygen on BaOPt(111). Abstract: The formation...

  20. Sandia National Laboratories: characterizing Scaled Wind Farm...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    characterizing Scaled Wind Farm Technology facility inflow Characterizing Scaled Wind Farm Technology Facility Inflow On April 1, 2014, in Energy, News, News & Events, Partnership,...

  1. Impact of ground motion characterization on conservatism and variability in seismic risk estimates

    SciTech Connect (OSTI)

    Sewell, R.T.; Toro, G.R.; McGuire, R.K.

    1996-07-01T23:59:59.000Z

    This study evaluates the impact, on estimates of seismic risk and its uncertainty, of alternative methods in treatment and characterization of earthquake ground motions. The objective of this study is to delineate specific procedures and characterizations that may lead to less biased and more precise seismic risk results. This report focuses on sources of conservatism and variability in risk that may be introduced through the analytical processes and ground-motion descriptions which are commonly implemented at the interface of seismic hazard and fragility assessments. In particular, implication of the common practice of using a single, composite spectral shape to characterize motions of different magnitudes is investigated. Also, the impact of parameterization of ground motion on fragility and hazard assessments is shown. Examination of these results demonstrates the following. (1) There exists significant conservatism in the review spectra (usually, spectra characteristic of western U.S. earthquakes) that have been used in conducting past seismic risk assessments and seismic margin assessments for eastern U.S. nuclear power plants. (2) There is a strong dependence of seismic fragility on earthquake magnitude when PGA is used as the ground-motion characterization. When, however, magnitude-dependent spectra are anchored to a common measure of elastic spectral acceleration averaged over the appropriate frequency range, seismic fragility shows no important nor consistent dependence on either magnitude or strong-motion duration. Use of inelastic spectral acceleration (at the proper frequency) as the ground spectrum anchor demonstrates a very similar result. This study concludes that a single, composite-magnitude spectrum can generally be used to characterize ground motion for fragility assessment without introducing significant bias or uncertainty in seismic risk estimates.

  2. Heat Flow and Gas Hydrates on the Continental Margin of India: Building on Results from NGHP Expedition 01

    SciTech Connect (OSTI)

    Anne Trehu; Peter Kannberg

    2011-06-30T23:59:59.000Z

    The Indian National Gas Hydrate Program (NGHP) Expedition 01 presented the unique opportunity to constrain regional heat flow derived from seismic observations by using drilling data in three regions on the continental margin of India. The seismic bottom simulating reflection (BSR) is a well-documented feature in hydrate bearing sediments, and can serve as a proxy for apparent heat flow if data are available to estimate acoustic velocity and density in water and sediments, thermal conductivity, and seafloor temperature. Direct observations of temperature at depth and physical properties of the sediment obtained from drilling can be used to calibrate the seismic observations, decreasing the uncertainty of the seismically-derived estimates. Anomalies in apparent heat flow can result from a variety of sources, including sedimentation, erosion, topographic refraction and fluid flow. We constructed apparent heat flow maps for portions of the Krishna-Godavari (K-G) basin, the Mahanadi basin, and the Andaman basin and modeled anomalies using 1-D conductive thermal models. Apparent heat flow values in the Krishna-Godavari (K-G) basin and Mahanadi basin are generally 0.035 to 0.055 watts per square meter (W/m{sup 2}). The borehole data show an increase in apparent heat flow as water depth increases from 900 to 1500 m. In the SW part of the seismic grid, 1D modeling of the effect of sedimentation on heat flow shows that {approx}50% of the observed increase in apparent heat flow with increasing water depth can be attributed to trapping of sediments behind a 'toe-thrust' ridge that is forming along the seaward edge of a thick, rapidly accumulating deltaic sediment pile. The remainder of the anomaly can be explained either by a decrease in thermal conductivity of the sediments filling the slope basin or by lateral advection of heat through fluid flow along stratigraphic horizons within the basin and through flexural faults in the crest of the anticline. Such flow probably plays a role in bringing methane into the ridge formed by the toe-thrust. Because of the small anomaly due to this process and the uncertainty in thermal conductivity, we did not model this process explicitly. In the NE part of the K-G basin seismic grid, a number of local heat flow lows and highs are observed, which can be attributed to topographic refraction and to local fluid flow along faults, respectively. No regional anomaly can be resolved. Because of lack of continuity between the K-G basin sites within the seismic grid and those {approx}70 km to the NE in water depths of 1200 to 1500 m, we do not speculate on the reason for higher heat flow at these depths. The Mahanadi basin results, while limited in geographic extent, are similar to those for the K-G basin. The Andaman basin exhibits much lower apparent heat flow values, ranging from 0.015 to 0.025 W/m{sup 2}. Heat flow here also appears to increase with increasing water depth. The very low heat flow here is among the lowest heat flow observed anywhere and gives rise to a very thick hydrate stability zone in the sediments. Through 1D models of sedimentation (with extremely high sedimentation rates as a proxy for tectonic thickening), we concluded that the very low heat flow can probably be attributed to the combined effects of high sedimentation rate, low thermal conductivity, tectonic thickening of sediments and the cooling effect of a subducting plate in a subduction zone forearc. Like for the K-G basin, much of the local variability can be attributed to topography. The regional increase in heat flow with water depth remains unexplained because the seismic grid available to us did not extend far enough to define the local tectonic setting of the slope basin controlling this observational pattern. The results are compared to results from other margins, both active and passive. While an increase in apparent heat flow with increasing water depth is widely observed, it is likely a result of different processes in different places. The very low heat flow due to sedimentation and tectonics in the Andaman basi

  3. Heat Flow and Gas Hydrates on the Continental Margin of India: Building on Results from NGHP Expedition 01

    SciTech Connect (OSTI)

    Trehu, Anne; Kannberg, Peter

    2011-06-30T23:59:59.000Z

    The Indian National Gas Hydrate Program (NGHP) Expedition 01 presented the unique opportunity to constrain regional heat flow derived from seismic observations by using drilling data in three regions on the continental margin of India. The seismic bottom simulating reflection (BSR) is a well-documented feature in hydrate bearing sediments, and can serve as a proxy for apparent heat flow if data are available to estimate acoustic velocity and density in water and sediments, thermal conductivity, and seafloor temperature. Direct observations of temperature at depth and physical properties of the sediment obtained from drilling can be used to calibrate the seismic observations, decreasing the uncertainty of the seismically-derived estimates. Anomalies in apparent heat flow can result from a variety of sources, including sedimentation, erosion, topographic refraction and fluid flow. We constructed apparent heat flow maps for portions of the Krishna-Godavari (K-G) basin, the Mahanadi basin, and the Andaman basin and modeled anomalies using 1-D conductive thermal models. Apparent heat flow values in the Krishna-Godavari (K-G) basin and Mahanadi basin are generally 0.035 to 0.055 watts per square meter (W/m2). The borehole data show an increase in apparent heat flow as water depth increases from 900 to 1500 m. In the SW part of the seismic grid, 1D modeling of the effect of sedimentation on heat flow shows that ~50% of the observed increase in apparent heat flow with increasing water depth can be attributed to trapping of sediments behind a "toe-thrust" ridge that is forming along the seaward edge of a thick, rapidly accumulating deltaic sediment pile. The remainder of the anomaly can be explained either by a decrease in thermal conductivity of the sediments filling the slope basin or by lateral advection of heat through fluid flow along stratigraphic horizons within the basin and through flexural faults in the crest of the anticline. Such flow probably plays a role in bringing methane into the ridge formed by the toe-thrust. Because of the small anomaly due to this process and the uncertainty in thermal conductivity, we did not model this process explicitly. In the NE part of the K-G basin seismic grid, a number of local heat flow lows and highs are observed, which can be attributed to topographic refraction and to local fluid flow along faults, respectively. No regional anomaly can be resolved. Because of lack of continuity between the K-G basin sites within the seismic grid and those ~70 km to the NE in water depths of 1200 to 1500 m, we do not speculate on the reason for higher heat flow at these depths. The Mahanadi basin results, while limited in geographic extent, are similar to those for the KG basin. The Andaman basin exhibits much lower apparent heat flow values, ranging from 0.015 to 0.025 W/m2. Heat flow here also appears to increase with increasing water depth. The very low heat flow here is among the lowest heat flow observed anywhere and gives rise to a very thick hydrate stability zone in the sediments. Through 1D models of sedimentation (with extremely high sedimentation rates as a proxy for tectonic thickening), we concluded that the very low heat flow can probably be attributed to the combined effects of high sedimentation rate, low thermal conductivity, tectonic thickening of sediments and the cooling effect of a subducting plate in a subduction zone forearc. Like for the K-G basin, much of the local variability can be attributed to topography. The regional increase in heat flow with water depth remains unexplained because the seismic grid available to us did not extend far enough to define the local tectonic setting of the slope basin controlling this observational pattern. The results are compared to results from other margins, both active and passive. While an increase in apparent heat flow with increasing water depth is widely observed, it is likely a result of different processes in different places. The very low heat flow due to sedimentation and tectonics in the Andaman basin is at the low end of glob

  4. Biomass Surface Characterization Laboratory (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2012-04-01T23:59:59.000Z

    This fact sheet provides information about Biomass Surface Characterization Laboratory capabilities and applications at NREL.

  5. Optic probe for semiconductor characterization

    DOE Patents [OSTI]

    Sopori, Bhushan L. (Denver, CO); Hambarian, Artak (Yerevan, AM)

    2008-09-02T23:59:59.000Z

    Described herein is an optical probe (120) for use in characterizing surface defects in wafers, such as semiconductor wafers. The optical probe (120) detects laser light reflected from the surface (124) of the wafer (106) within various ranges of angles. Characteristics of defects in the surface (124) of the wafer (106) are determined based on the amount of reflected laser light detected in each of the ranges of angles. Additionally, a wafer characterization system (100) is described that includes the described optical probe (120).

  6. ROCK MASS CHARACTERIZATION FOR STORAGE OF NUCLEAR WASTE IN GRANITE

    E-Print Network [OSTI]

    Witherspoon, P.A.

    2010-01-01T23:59:59.000Z

    m in diameter. 2) geological characterization - includingBasic Objectives Geological characterization Is the process

  7. Curtis Smith, Diego Mandelli, Cristian Rabiti Idaho National...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    A case study in the interaction of mechanistic and probabilistic safety analysis Curtis Smith, Diego Mandelli, Cristian Rabiti Idaho National Laboratory (INL) RISMC strategic goals...

  8. Relationship of Imaging Frequency and Planning Margin to Account for Intrafraction Prostate Motion: Analysis Based on Real-Time Monitoring Data

    SciTech Connect (OSTI)

    Curtis, William [School of Medicine, Case Western Reserve University, Cleveland, Ohio (United States)] [School of Medicine, Case Western Reserve University, Cleveland, Ohio (United States); Khan, Mohammad; Magnelli, Anthony; Stephans, Kevin; Tendulkar, Rahul [Department of Radiation Oncology, Cleveland Clinic, Cleveland, Ohio (United States)] [Department of Radiation Oncology, Cleveland Clinic, Cleveland, Ohio (United States); Xia, Ping, E-mail: xiap@ccf.org [Department of Radiation Oncology, Cleveland Clinic, Cleveland, Ohio (United States)] [Department of Radiation Oncology, Cleveland Clinic, Cleveland, Ohio (United States)

    2013-03-01T23:59:59.000Z

    Purpose: Correction for intrafraction prostate motion becomes important for hypofraction treatment of prostate cancer. The purpose of this study was to estimate an ideal planning margin to account for intrafraction prostate motion as a function of imaging and repositioning frequency in the absence of continuous prostate motion monitoring. Methods and Materials: For 31 patients receiving intensity modulated radiation therapy treatment, prostate positions sampled at 10 Hz during treatment using the Calypso system were analyzed. Using these data, we simulated multiple, less frequent imaging protocols, including intervals of every 10, 15, 20, 30, 45, 60, 90, 120, 180, and 240 seconds. For each imaging protocol, the prostate displacement at the imaging time was corrected by subtracting prostate shifts from the subsequent displacements in that fraction. Furthermore, we conducted a principal component analysis to quantify the direction of prostate motion. Results: Averaging histograms of every 240 and 60 seconds for all patients, vector displacements of the prostate were, respectively, within 3 and 2 mm for 95% of the treatment time. A vector margin of 1 mm achieved 91.2% coverage of the prostate with 30 second imaging. The principal component analysis for all fractions showed the largest variance in prostate position in the midsagittal plane at 54° from the anterior direction, indicating that anterosuperior to inferoposterior is the direction of greatest motion. The smallest prostate motion is in the left-right direction. Conclusions: The magnitudes of intrafraction prostate motion along the superior-inferior and anterior-posterior directions are comparable, and the smallest motion is in the left-right direction. In the absence of continuous prostate motion monitoring, and under ideal circumstances, 1-, 2-, and 3-mm vector planning margins require a respective imaging frequency of every 15, 60, and 240 to account for intrafraction prostate motion while achieving adequate geometric target coverage for 95% of the time.

  9. Characterization of 3D Photovoltaics

    E-Print Network [OSTI]

    Characterization of 3D Photovoltaics SEMICONDUCTORS Our goal is to provide industry with test structures and models of next-generation photovoltaics, with an initial focus on cadmium telluride (Cd (nanostructured) photovoltaic devices. Objective Impact and Customers · The U.S. Photovoltaic Industry Roadmap

  10. Characterizing Commercial Sites Selected for

    E-Print Network [OSTI]

    such as solar thermal absorption chillers, building energy management systems, and advanced lighting. The twoCharacterizing Commercial Sites Selected for Energy Efficiency Monitoring This report presents data of Commercial Sites Selected for Energy Efficiency Monitoring Prepared for the U.S. Department of Energy Office

  11. FCLib: The Feature Characterization Library.

    SciTech Connect (OSTI)

    Gentile, Ann C.; Doyle, Wendy S. K.; Kegelmeyer, W. Philip [Sandia National Laboratories, Livermore, CA; Ulmer, Craig D. [Sandia National Laboratories, Livermore, CA

    2008-11-01T23:59:59.000Z

    The Feature Characterization Library (FCLib) is a software library that simplifies the process of interrogating, analyzing, and understanding complex data sets generated by finite element applications. This document provides an overview of the library, a description of both the design philosophy and implementation of the library, and examples of how the library can be utilized to extract understanding from raw datasets.

  12. Dissertation Imaging as Characterization Techniques

    E-Print Network [OSTI]

    Sites, James R.

    Telluride Photovoltaics The goal of increasing the efficiency of solar cell devices is a universal oneDissertation Imaging as Characterization Techniques for Thin-Film Cadmium Telluride Photovoltaics. Increased photovoltaic (PV) performance means an increase in competition with other energy tech- nologies

  13. Electrical Characterization Laboratory (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2011-10-01T23:59:59.000Z

    This fact sheet describes the purpose, lab specifications, applications scenarios, and information on how to partner with NREL's Electrical Characterization Laboratory at the Energy Systems Integration Facility. Electrical Characterization Laboratory at NREL's Energy Systems Integration Facility (ESIF) focuses on the detailed electrical characterization of components and systems. This laboratory allows researchers to test the ability of equipment to withstand high voltage surges and high current faults, including equipment using standard and advanced fuels such as hydrogen. Equipment that interconnected to the electric power grid is required to meet specific surge withstand capabilities. This type of application tests the ability of electrical equipment to survive a lightning strike on the main grid. These are often specified in IEEE standards such as IEEE Std. 1547. In addition, this lab provides a space for testing new, unproven, or potentially hazardous equipment for robust safety assessment prior to use in other labs at ESIF. The Electric Characterization Laboratory is in a location where new, possibly sensitive or secret equipment can be evaluated behind closed doors.

  14. Material stabilization characterization management plan

    SciTech Connect (OSTI)

    GIBSON, M.W.

    1999-08-31T23:59:59.000Z

    This document presents overall direction for characterization needs during stabilization of SNM at the Plutonium Finishing Plant (PFP). Technical issues for needed data and equipment are identified. Information on material categories and links to vulnerabilities are given. Comparison data on the material categories is discussed to assist in assessing the relative risks and desired processing priority.

  15. NANOSCALE STRUCTURALAND MAGNETIC CHARACTERIZATION USING

    E-Print Network [OSTI]

    Dunin-Borkowski, Rafal E.

    of novel nanoscale storage devices and sensors. However, for successful utilization, it is essential]. Such unique properties of magnetic thin films and nanostructures hold great promise for the development to the characterization of nanostructured magnetic materials. 2. ELECTRON MICROSCOPY METHODS In the transmission electron

  16. Acoustic Characterization of Mesoscale Objects

    SciTech Connect (OSTI)

    Chinn, D; Huber, R; Chambers, D; Cole, G; Balogun, O; Spicer, J; Murray, T

    2007-03-13T23:59:59.000Z

    This report describes the science and engineering performed to provide state-of-the-art acoustic capabilities for nondestructively characterizing mesoscale (millimeter-sized) objects--allowing micrometer resolution over the objects entire volume. Materials and structures used in mesoscale objects necessitate the use of (1) GHz acoustic frequencies and (2) non-contacting laser generation and detection of acoustic waves. This effort demonstrated that acoustic methods at gigahertz frequencies have the necessary penetration depth and spatial resolution to effectively detect density discontinuities, gaps, and delaminations. A prototype laser-based ultrasonic system was designed and built. The system uses a micro-chip laser for excitation of broadband ultrasonic waves with frequency components reaching 1.0 GHz, and a path-stabilized Michelson interferometer for detection. The proof-of-concept for mesoscale characterization is demonstrated by imaging a micro-fabricated etched pattern in a 70 {micro}m thick silicon wafer.

  17. Beam characterization by wavefront sensor

    DOE Patents [OSTI]

    Neal, D.R.; Alford, W.J.; Gruetzner, J.K.

    1999-08-10T23:59:59.000Z

    An apparatus and method are disclosed for characterizing an energy beam (such as a laser) with a two-dimensional wavefront sensor, such as a Shack-Hartmann lenslet array. The sensor measures wavefront slope and irradiance of the beam at a single point on the beam and calculates a space-beamwidth product. A detector array such as a charge coupled device camera is preferably employed. 21 figs.

  18. Title of dissertation: EXPERIMENTAL CHARACTERIZATION OF TURBULENT

    E-Print Network [OSTI]

    Lathrop, Daniel P.

    ABSTRACT Title of dissertation: EXPERIMENTAL CHARACTERIZATION OF TURBULENT SUPERFLUID HELIUM Matthew S. Paoletti, Doctor of Philosophy, 2010 Dissertation directed by: Professor Daniel Lathrop. #12;EXPERIMENTAL CHARACTERIZATION OF TURBULENT SUPERFLUID HELIUM by Matthew S. Paoletti Dissertation

  19. Collector/Receiver Characterization (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2010-08-01T23:59:59.000Z

    Fact sheet describing NREL CSP Program capabilities for collector/receiver characterization: determining optical efficiency, measuring heat loss, developing and testing concentrators, concentrating the sun's power, and optically characterizing CSP plants.

  20. BLOOD CHARACTERIZATION FROM PULSATILE BIOIMPEDANCE SPECTROSCOPY

    E-Print Network [OSTI]

    Adler, Andy

    BLOOD CHARACTERIZATION FROM PULSATILE BIOIMPEDANCE SPECTROSCOPY Tao Dai Systems and Computer of blood using three measuring frequencies. Characterization of blood bioimpedance properties; however, Current bioimpedance spectroscopy measurements of blood are ei- ther in vitro[6

  1. Instrumentation for CTA site characterization

    E-Print Network [OSTI]

    Fruck, Christian; Ernenwein, Jean-Pierre; Mandát, Dušan; Schweizer, Thomas; Häfner, Dennis; Bulik, Tomasz; Cieslar, Marek; Costantini, Heide; Dominik, Michal; Ebr, Jan; Garczarczyk, Markus; Lorentz, Eckart; Pareschi, Giovanni; Pech, Miroslav; Puerto-Giménez, Irene; Teshima, Masahiro

    2015-01-01T23:59:59.000Z

    Many atmospheric and climatic criteria have to be taken into account for the selection of a suitable site for the next generation of imaging air-shower Cherenkov telescopes, the "Cherenkov Telescope Array" CTA. Such data are not available with sufficient precision or the comparability to allow for a comprehensive characterization of the proposed sites to be made. Identical cross-calibrated instruments have been developed which allow for precise comparison between sites, the cross-validation of existing data, and the ground-validation of satellite data. The site characterization work package of the CTA consortium opted to construct and deploy 9 copies of an autonomous multi-purpose weather sensor, incorporating an infrared cloud sensor a newly developed sensor for measuring the light of the night sky, and an All-Sky-Camera, the whole referred to as Autonomous Tool for Measuring Observatory Site COnditions PrEcisely (ATMOSCOPE). We present here the hardware that was combined into the ATMOSCOPE and characterize ...

  2. Cross delay line sensor characterization

    SciTech Connect (OSTI)

    Owens, Israel J [Los Alamos National Laboratory; Remelius, Dennis K [Los Alamos National Laboratory; Tiee, Joe J [Los Alamos National Laboratory; Buck, Steven E [Los Alamos National Laboratory; Whittemore, Stephen R [Los Alamos National Laboratory; Thompson, David C [Los Alamos National Laboratory; Shirey, Robert [Los Alamos National Laboratory

    2010-01-01T23:59:59.000Z

    There exists a wealth of information in the scientific literature on the physical properties and device characterization procedures for complementary metal oxide semiconductor (CMOS), charge coupled device (CCD) and avalanche photodiode (APD) format detectors. Numerous papers and books have also treated photocathode operation in the context of photomultiplier tube (PMT) operation for either non imaging applications or limited night vision capability. However, much less information has been reported in the literature about the characterization procedures and properties of photocathode detectors with novel cross delay line (XDL) anode structures. These allow one to detect single photons and create images by recording space and time coordinate (X, Y & T) information. In this paper, we report on the physical characteristics and performance of a cross delay line anode sensor with an enhanced near infrared wavelength response photocathode and high dynamic range micro channel plate (MCP) gain (> 10{sup 6}) multiplier stage. Measurement procedures and results including the device dark event rate (DER), pulse height distribution, quantum and electronic device efficiency (QE & DQE) and spatial resolution per effective pixel region in a 25 mm sensor array are presented. The overall knowledge and information obtained from XDL sensor characterization allow us to optimize device performance and assess capability. These device performance properties and capabilities make XDL detectors ideal for remote sensing field applications that require single photon detection, imaging, sub nano-second timing response, high spatial resolution (10's of microns) and large effective image format.

  3. Microearthquake Technology for EGS Fracture Characterization...

    Broader source: Energy.gov (indexed) [DOE]

    comments: * This project develops tools and methodology for characterizing reservoir dynamics using microseismicity. The main approaches are improved earthquake locations...

  4. Biomass Catalyst Characterization Laboratory (Fact Sheet)

    SciTech Connect (OSTI)

    Not Available

    2011-07-01T23:59:59.000Z

    This fact sheet provides information about Biomass Catalyst Characterization Laboratory (BCCL) capabilities and applications at NREL's National Bioenergy Center.

  5. Materials Characterization Laboratory (Fact Sheet), NREL (National...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Materials Characterization Laboratory may include: * PEMFC industry * Certification laboratories * Universities * Other National laboratories Contact Us If you are interested in...

  6. CNEA Fresh Fuel Plate Characterization Summary Report

    SciTech Connect (OSTI)

    D. Keiser; F. Rice

    2012-02-01T23:59:59.000Z

    Characterization summary report outlining the findings of the fresh fuel examinations of the plates received from CNEA.

  7. Articles about Resource Assessment and Characterization

    Broader source: Energy.gov [DOE]

    Stories about resource assessment and characterization featured by the U.S. Department of Energy (DOE) Wind Program.

  8. Materials Characterization Capabilities at the High Temperature...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Lightweighting Materials Materials Characterization Capabilities at the High Temperature Materials Laboratory: Focus Lightweighting Materials 2011 DOE Hydrogen and Fuel Cells...

  9. Characterizing Microbial Community and Geochemical Dynamics at...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Microbial Community and Geochemical Dynamics at Hydrothermal Vents Using Osmotically Driven Continuous Fluid Characterizing Microbial Community and Geochemical Dynamics at...

  10. Measurement and Characterization of Unregulated Emissions from...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    & Publications Ethanol Effects on Lean-Burn and Stoichiometric GDI Emissions Measurement and Characterization of Unregulated Emissions from Advanced Technologies...

  11. Paleo-reconstruction of shelf-slope margin along San Emigdio Mountains, southern San Joaquin Valley, California

    SciTech Connect (OSTI)

    Butler, K.R.

    1988-03-01T23:59:59.000Z

    Deformation along the San Emigdio Mountains, California, is characterized by large overthrust sheets that carried Eocene through Miocene nonmarine to shallow marine strata over their deeper marine equivalents. The Pleito thrust has at least 20,000 ft of throw and is the major structural feature of this overthrust belt. The upper plate of the Pleito thrust carries an extensively exposed block of three prograding sequences and, along strike, partially exposes the shelf-slope boundaries of these units. Equivalent changes are observed in the subsurface beneath the overthrust. Total crustal shortening along this region ranges from 25 to 50%, with most of the shortening taken up by the Pleito thrust. The thrust has a low-angle, ramp-and-glide configuration, but on the south, the strata eventually extend downward into basement. The northern boundary to the deformation belt is the White Wolf and Pioneer fold and thrust structures. These features form a transfer zone, where one structure ends and the other feature begins. The amplitude of these folds can be up to 10,000 ft from crest to trough. Because of the large overthrust of the Pleito thrust, reservoir rocks are found up to 7 mi south of the fault's surface trace in the lower plate. The buried strata lie south and west of producing fields along the White Wolf fault and the Tejon embayment. The complicated stratigraphic changes combined with the thrust-belt structures require retrodeformable crustal profiles to take into account the facies distributions to model the hydrocarbon potential of this lightly explored province.

  12. Advanced Fine Particulate Characterization Methods

    SciTech Connect (OSTI)

    Steven Benson; Lingbu Kong; Alexander Azenkeng; Jason Laumb; Robert Jensen; Edwin Olson; Jill MacKenzie; A.M. Rokanuzzaman

    2007-01-31T23:59:59.000Z

    The characterization and control of emissions from combustion sources are of significant importance in improving local and regional air quality. Such emissions include fine particulate matter, organic carbon compounds, and NO{sub x} and SO{sub 2} gases, along with mercury and other toxic metals. This project involved four activities including Further Development of Analytical Techniques for PM{sub 10} and PM{sub 2.5} Characterization and Source Apportionment and Management, Organic Carbonaceous Particulate and Metal Speciation for Source Apportionment Studies, Quantum Modeling, and High-Potassium Carbon Production with Biomass-Coal Blending. The key accomplishments included the development of improved automated methods to characterize the inorganic and organic components particulate matter. The methods involved the use of scanning electron microscopy and x-ray microanalysis for the inorganic fraction and a combination of extractive methods combined with near-edge x-ray absorption fine structure to characterize the organic fraction. These methods have direction application for source apportionment studies of PM because they provide detailed inorganic analysis along with total organic and elemental carbon (OC/EC) quantification. Quantum modeling using density functional theory (DFT) calculations was used to further elucidate a recently developed mechanistic model for mercury speciation in coal combustion systems and interactions on activated carbon. Reaction energies, enthalpies, free energies and binding energies of Hg species to the prototype molecules were derived from the data obtained in these calculations. Bimolecular rate constants for the various elementary steps in the mechanism have been estimated using the hard-sphere collision theory approximation, and the results seem to indicate that extremely fast kinetics could be involved in these surface reactions. Activated carbon was produced from a blend of lignite coal from the Center Mine in North Dakota and sunflower hulls for the biomass material to be carbonized. The ability to remove mercury from a bituminous coal's derived flue gas was low. Removals of only 15% were attained while injecting 6 lb/Macf of activated carbon upstream of an electrostatic precipitator. Poisoning of sites on the activated carbon by SO{sub 2} and SO{sub 3} contributed to the poor mercury capture performance.

  13. Petroleum characterization by perfluorocarbon tracers

    SciTech Connect (OSTI)

    Senum, G.I.; Fajer, R.W. (Brookhaven National Lab., Upton, NY (United States)); Harris, B.R. Jr. (USDOE Naval Petroleum Reserves in California, Tupman, CA (United States)); DeRose, W.E. (Bechtel Petroleum Operations, Inc., Tupman, CA (United States)); Ottaviani, W.L. (Chevron U.S.A., Inc., Bakersfield, CA (United States))

    1992-02-01T23:59:59.000Z

    Perfluorocarbon tracers (PFTs), a class of six compounds, were used to help characterize the Shallow Oil Zone (SOZ) reservoir at the Naval Petroleum Reserve in California (NPRC) at Elk Hills. The SOZ reservoir is undergoing a pilot gas injection program to assess the technical feasibility and economic viability of injecting gas into the SOZ for improved oil recovery. PFTs were utilized in the pilot gas injection to qualitatively assess the extent of the pilot gas injection so as to determine the degree of gas containment within the SOZ reservoir.

  14. Quantitative Characterization of Nanostructured Materials

    SciTech Connect (OSTI)

    Dr. Frank (Bud) Bridges, University of California-Santa Cruz

    2010-08-05T23:59:59.000Z

    The two-and-a-half day symposium on the "Quantitative Characterization of Nanostructured Materials" will be the first comprehensive meeting on this topic held under the auspices of a major U.S. professional society. Spring MRS Meetings provide a natural venue for this symposium as they attract a broad audience of researchers that represents a cross-section of the state-of-the-art regarding synthesis, structure-property relations, and applications of nanostructured materials. Close interactions among the experts in local structure measurements and materials researchers will help both to identify measurement needs pertinent to â??real-worldâ?ť materials problems and to familiarize the materials research community with the state-of-the-art local structure measurement techniques. We have chosen invited speakers that reflect the multidisciplinary and international nature of this topic and the need to continually nurture productive interfaces among university, government and industrial laboratories. The intent of the symposium is to provide an interdisciplinary forum for discussion and exchange of ideas on the recent progress in quantitative characterization of structural order in nanomaterials using different experimental techniques and theory. The symposium is expected to facilitate discussions on optimal approaches for determining atomic structure at the nanoscale using combined inputs from multiple measurement techniques.

  15. BNFL Report Glass Formers Characterization

    SciTech Connect (OSTI)

    Schumacher, R.F.

    2000-07-27T23:59:59.000Z

    The objective of this task was to obtain powder property data on candidate glass former materials, sufficient to guide conceptual design and estimate the cost of glass former handling facilities as requested under Part B1 of BNFL Technical and Development Support. Twenty-nine glass forming materials were selected and obtained from vendors for the characterization of their physical properties, durability in caustic solution, and powder flow characteristics. A glass former was selected based on the characterization for each of the ten oxide classes required for Envelope A, B, and C mixtures. Three blends (A, B, and C) were prepared based on formulations provided by Vitreous State Laboratory and evaluated with the same methods employed for the glass formers. The properties obtained are presented in a series of attached Tables. It was determined that five of the ten glass formers, (kyanite, iron oxide, titania, zircon, and zinc oxide) have the potential to cause some level of solids f low problems. In addition, all of the blends may require consideration for their handling. A number of engineering considerations and recommendations were prepared based on the experimental findings, experience, and other process considerations. Recommendations for future testing are included. In conjunction with future work, it is recommended that a professional consultant be engaged to guide and assist with testing and design input.

  16. BNFL Report Glass Formers Characterization

    SciTech Connect (OSTI)

    Schumacher, R.F.

    2000-07-27T23:59:59.000Z

    The objective of this task was to obtain powder property data on candidate glass former materials, sufficient to guide conceptual design and estimate the cost of glass former handling facilities as requested under Part B1 of BNFL Technical and Development Support. Twenty-nine glass forming materials were selected and obtained from vendors for the characterization of their physical properties, durability in caustic solution, and powder flow characteristics. A glass former was selected based on the characterization for each of the ten oxide classes required for Envelope A, B, and C mixtures. Three blends (A, B, and C) were prepared based on formulations provided by Vitreous State Laboratory and evaluated with the same methods employed for the glass formers. The properties obtained are presented in a series of attached Tables. It was determined that five of the ten glass formers, (kyanite, iron oxide, titania, zircon, and zinc oxide) have the potential to cause some level of solids f low problems. The problems might include arching or ratholing in the silo/hopper. In addition, all of the blends may require consideration for their handling.

  17. Technology Characterizations. Environmental Information Handbook

    SciTech Connect (OSTI)

    Not Available

    1980-06-01T23:59:59.000Z

    The Environmental Handbook Series is designed to overcome the deficiency of information utility and transfer. Each of the works in this series brings together information in an area and format that is useful to both public and private sector needs. It is meant to serve as a basic reference document that will stand for a period of time and help to enrich decisionmaking and research in the interface of energy and the environment. This particular handbook deals with environmental characterization data for the energy technologies and presents the data in a format for use by DOE policy analysts. This treatment includes not only the actual information base, but also a preface which explains the present concept, the historical growth of the program, and the new direction for improved utility. The information base, itself, is constantly being enhanced and is republished periodically as necessary. The specific energy systems for which environmental/technology characterization information is provided are grouped as follows: nuclear energy; coal; petroleum; gas; synthetic fuels; solar energy; geothermal energy; and hydroelectricity.

  18. Characterization of protein folding intermediates

    SciTech Connect (OSTI)

    Kim, P.S.

    1986-01-01T23:59:59.000Z

    The three-dimensional structure of a protein is encoded in its linear sequence of amino acids. Studies of protein folding are aimed at understanding the nature of this code which translates one-dimensional information to three-dimensions. It is now well-established that protein folding intermediates exist and can be populated significantly under some conditions. A method to characterize kinetic folding intermediates is described. The method takes advantage of the decrease in exchange rates between amide protons (i.e., peptide backbone NH) and solvent water protons, when the amide proton is involved in structure. The feasibility of using amide proton exchange to pulse-label proteins during folding has been demonstrated using (/sup 3/H)-H/sub 2/O. The results with ribonuclease A (RNase A) support a framework model for folding, in which the secondary structure of a protein is formed before tertiary structure changes are complete. Extension of these studies using NMR should permit characterization of early secondary structure folding frameworks.

  19. CRAD, Training - Los Alamos National Laboratory Waste Characterization...

    Office of Environmental Management (EM)

    Training - Los Alamos National Laboratory Waste Characterization, Reduction, and Repackaging Facility CRAD, Training - Los Alamos National Laboratory Waste Characterization,...

  20. New Report Characterizes Existing Offshore Wind Grid Interconnection...

    Office of Environmental Management (EM)

    New Report Characterizes Existing Offshore Wind Grid Interconnection Capabilities New Report Characterizes Existing Offshore Wind Grid Interconnection Capabilities September 3,...

  1. Public Meeting: Physical Characterization of Grid-Connected Commercial...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    and Definitions; Characterization Protocol Framework; Illustrative Example: Room Air Conditioner (RAC); Process for Developing Characterization Protocols; Overview of...

  2. Calculator program trilogy characterizes comingled gas streams

    SciTech Connect (OSTI)

    Flowers, R.

    1985-08-26T23:59:59.000Z

    A series of programs has been developed for the HP-41CV that allows a quicker and more accurate approach to commingled stream calculations. This avoids the margin of error that the representative method introduces. The alpha-numeric capability of the HP-41CV will prompt for the inputs of an 11-component stream. The program series comprises: gas analysis; gas gathering/gas analysis; and flash vaporization. Each of these programs has its stand-alone use; but their true worth is in their integrated capability.

  3. Sulfate reduction and methane oxidation in continental margin sediments influenced by irrigation (south-east Atlantic off Namibia)

    SciTech Connect (OSTI)

    Fossing, H.; Ferdelman, T.G.; Berg, P.

    2000-03-01T23:59:59.000Z

    Sulfate reduction rates (SRR) and concentrations of SO{sub 4}{sup 2{minus}}, H{sub 2}S, pyrite sulfur, total sulfur, CH{sub 4}, and organic carbon were measured with high depth resolution through the entire length of the SO{sub 4}{sup 2{minus}}-zone and well into the CH{sub 4}-xone at two continental slope stations in the eastern South Atlantic (Benguela upwelling area). The sediments were characterized by a high organic carbon content of approx. 7.5% at GeoB 3703 and 3.7% at GeoB 3714. At GeoB 3703 SO{sub 4}{sup 2{minus}} concentrations decreased linearly with depth to about 40 {micro}M at the sulfate-methane transition zone (SMT) at 3.5 m, while at GeoB 3714, SO{sub 4}{sup 2{minus}} remained at sea water concentration in the top 2 m of the sediment and then decreased linearly to about 70 {micro}M at the SMT at 6 m. Direct rate measurements of SRR ({sup 35}SO{sub 4}{sup 2{minus}}) showed that the highest SRR occurred within the surface 3--5 cm with peak rates of up to 20 and 7 nmol SO{sub 4}{sup 2{minus}} cm{sup 3}/day at GeoB 3703 and GeoB 3714, respectively. SRR decreased quasi-exponentially with depth at GeoB 3703 and the cumulative SRR over the length of the SO{sub 4}{sup 2{minus}} zone resulted in an areal SRR of 1114--3493 {micro}mol/m{sup 2} day at GeoB 3703 with more than 80% of the total sulfate reduction proceeding in the top 30 cm sediment. Modeled SRR balanced both methane oxidation rates and measured SRR within the SMT, but severely underestimated by up to 89% the total SRR{sub area} that were obtained from direct measurements. Modeled and measured SRR were reconciled by including solute transport by irrigation described by a non-local pore water exchange function ({alpha}) which had values of up to 0.3 year{sup {minus}1} in the top sediment, and decreased exponentially to zero (i.e., no irrigation) at 2--3 meters (i.e., above SMT). These results suggested that co-existing sulfate reduction processes and linear SO{sub 4}{sup 2{minus}} gradients can be maintained by a non-local transport mechanism such as irrigation, by which pore water in tubes or burrows is exchanged with bottom waters by activities of tube-dwelling animals, or some similar physical transport phenomenon (i.e., bubble ebullition).

  4. Characterization of geothermal solid wastes

    SciTech Connect (OSTI)

    Morris, W.F.; Stephens, F.B.

    1981-07-01T23:59:59.000Z

    The compositions of 5 major types of geothermal wastes have been determined, and samples have been subjected to EPA recommended extraction tests to determine if they contain toxic metals that would classify the wastes as hazardous. Of the samples tested, the extracts of geothermal brines clearly contain levels of As, Ba and Pb exceeding the maximum allowed concentrations that characterize wastes as toxic. Only one other waste type, geothermal scale, exhibited EP toxicity. Pb was found in the extract of geothermal scale at a level of 7 mg/l, only 2 mg/l over the maximum limit. All of the other types of geothermal waste samples showed levels of toxic metals in the extracts well below the regulated limits.

  5. Solar Thermal Reactor Materials Characterization

    SciTech Connect (OSTI)

    Lichty, P. R.; Scott, A. M.; Perkins, C. M.; Bingham, C.; Weimer, A. W.

    2008-03-01T23:59:59.000Z

    Current research into hydrogen production through high temperature metal oxide water splitting cycles has created a need for robust high temperature materials. Such cycles are further enhanced by the use of concentrated solar energy as a power source. However, samples subjected to concentrated solar radiation exhibited lifetimes much shorter than expected. Characterization of the power and flux distributions representative of the High Flux Solar Furnace(HFSF) at the National Renewable Energy Laboratory(NREL) were compared to ray trace modeling of the facility. In addition, samples of candidate reactor materials were thermally cycled at the HFSF and tensile failure testing was performed to quantify material degradation. Thermal cycling tests have been completed on super alloy Haynes 214 samples and results indicate that maximum temperature plays a significant role in reduction of strength. The number of cycles was too small to establish long term failure trends for this material due to the high ductility of the material.

  6. Natural phenomena hazards site characterization criteria

    SciTech Connect (OSTI)

    Not Available

    1994-03-01T23:59:59.000Z

    The criteria and recommendations in this standard shall apply to site characterization for the purpose of mitigating Natural Phenomena Hazards (wind, floods, landslide, earthquake, volcano, etc.) in all DOE facilities covered by DOE Order 5480.28. Criteria for site characterization not related to NPH are not included unless necessary for clarification. General and detailed site characterization requirements are provided in areas of meteorology, hydrology, geology, seismology, and geotechnical studies.

  7. Biomass Catalyst Characterization Laboratory (Fact Sheet), NREL...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Characterization Laboratory Enabling fundamental understanding of thermochemical biomass conversion catalysis and performance NREL is a national laboratory of the U.S....

  8. Electrochemical, Structural and Surface Characterization of Nickel...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Electrochemical, Structural and Surface Characterization of NickelZirconia Solid Oxide Fuel Cell Anodes in Coal Gas Containing Electrochemical, Structural and Surface...

  9. Spectroscopic Characterization of a Multiband Complex Oxide:...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    a Multiband Complex Oxide: Insulating and Conducting Cement 12CaO·7AlO. Spectroscopic Characterization of a Multiband Complex Oxide: Insulating and Conducting Cement...

  10. Regional Analysis And Characterization Of Fractured Aquifers...

    Open Energy Info (EERE)

    Regional Analysis And Characterization Of Fractured Aquifers In The Virginia Blue Ridge And Piedmont Provinces Jump to: navigation, search OpenEI Reference LibraryAdd to library...

  11. Chemical Characterization of Individual Particles and Residuals...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Individual Particles and Residuals of Cloud Droplets and Ice Crystals Collected On Board Research Chemical Characterization of Individual Particles and Residuals of Cloud Droplets...

  12. Characterization of the bovine major histocompatibility complex

    E-Print Network [OSTI]

    McArthur, Monica

    2013-02-22T23:59:59.000Z

    Genes within the major histocompatibility complex (MHC) are involved in immune response to infectious agents, tumor metastasis, stress response, gametogenesis, and development, including embryogenesis. Therefore, characterization...

  13. Molecular Characterization of Nitrogen Containing Organic Compounds...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Nitrogen Containing Organic Compounds in Biomass Burning Aerosols Using High Resolution Mass Molecular Characterization of Nitrogen Containing Organic Compounds in Biomass Burning...

  14. Molecular Characterization of Biomass Burning Aerosols Using...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Biomass Burning Aerosols Using High Resolution Mass Spectrometry. Molecular Characterization of Biomass Burning Aerosols Using High Resolution Mass Spectrometry. Abstract: Chemical...

  15. Optical Characterization Laboratory (Fact Sheet), NREL (National...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    conducts optical characterization of large solar concentration devices. Concentration solar power (CSP) mirror panels and concentrating solar systems are tested with an...

  16. Materials Characterization Capabilities at the High Temperature...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    2010 -- Washington D.C. lm028laracurzio2010o.pdf More Documents & Publications Materials Characterization Capabilities at the High Temperature Materials Laboratory and HTML...

  17. Advanced Battery Materials Characterization: Success stories...

    Broader source: Energy.gov (indexed) [DOE]

    Battery Materials Characterization: Success stories from the High Temperature Materials Laboratory (HTML) User Program Dr. E. Andrew Payzant, ORNL Project ID lmp02payzant This...

  18. Materials Characterization Capabilities at the High Temperature...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Review and Peer Evaluation lm028laracurzio2011o.pdf More Documents & Publications Materials Characterization Capabilities at the High Temperature Materials Laboratory and HTML...

  19. Materials Characterization Capabilities at the High Temperature...

    Broader source: Energy.gov (indexed) [DOE]

    and Peer Evaluation Meeting lm028laracurzio2012o.pdf More Documents & Publications Materials Characterization Capabilities at the High Temperature Materials Laboratory and HTML...

  20. Materials Characterization Capabilities at the High Temperature...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    May 18-22, 2009 -- Washington D.C. lm01laracurzio.pdf More Documents & Publications Materials Characterization Capabilities at the High Temperature Materials Laboratory and HTML...

  1. High-Temperature Thermoelectric Materials Characterization for...

    Broader source: Energy.gov (indexed) [DOE]

    High-Temperature Thermoelectric Materials Characterization for Automotive Waste Heat Recovery: Success Stories from the High Temperature Materials Laboratory (HTML) User Program...

  2. Materials Characterization Capabilities at the High Temperature...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Laboratory: Focus on Carbon Fiber and Composites Materials Characterization Capabilities at the High Temperature Materials Laboratory: Focus on Carbon Fiber and Composites 2011 DOE...

  3. High Temperature Thermoelectric Materials Characterization for...

    Broader source: Energy.gov (indexed) [DOE]

    High Temperature Thermoelectric Materials Characterization for Automotive Waste Heat Recovery: Success Stories from the High Temperature Materials Laboratory (HTML) User Program...

  4. Characterization of uraninite nanoparticles produced by Shewanella...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    uraninite nanoparticles produced by Shewanella oneidensis MR-1 . Characterization of uraninite nanoparticles produced by Shewanella oneidensis MR-1 . Abstract: The reduction of...

  5. Molecular Characterization of Organic Aerosols Using Nanospray...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    in OA, which is important for understanding chemical aging phenomena. Citation: Roach PJ, J Laskin, and A Laskin.2010."Molecular Characterization of Organic Aerosols Using...

  6. Characterization of geothermal reservoir crack patterns using...

    Open Energy Info (EERE)

    reservoir crack patterns using shear-wave splitting Jump to: navigation, search OpenEI Reference LibraryAdd to library Journal Article: Characterization of geothermal reservoir...

  7. Geothermal: Sponsored by OSTI -- Trace metal characterization...

    Office of Scientific and Technical Information (OSTI)

    Trace metal characterization and speciation in geothermal effluent by multiple scanning anodic stripping voltammetry and atomic absorpotion analysis. Annual progress report...

  8. Characterizing Test Methods and Emissions Reduction Performance...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Test Methods and Emissions Reduction Performance of In-Use Diesel Retrofit Technologies from the National Clean Diesel Campaign Characterizing Test Methods and Emissions Reduction...

  9. Materials Characterization Capabilities at the High Temperature...

    Broader source: Energy.gov (indexed) [DOE]

    Characterization Capabilities at the High Temperature Materials Laboratory: Focus on Carbon Fiber and Composites Project ID: LM027 DOE 2011 Vehicle Technologies Annual Merit...

  10. Central Characterization Program (CCP), Acceptable Knowledge...

    Office of Environmental Management (EM)

    for Los Alamos National Laboratory, TA-55 Mixed Transuranic Waste Streams Central Characterization Program (CCP), Acceptable Knowledge Summary Report for Los Alamos National...

  11. Characterization, Monitoring, and Sensor Technologies - Teaming...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Characterization, Monitoring, and Sensor Technologies - Teaming with DOE to Develop, Transfer, and Deploy Technologies Ames Laboratory scientists are contributing their expertise...

  12. Central Characterization Program (CCP) Transuranic Waste Certification...

    Office of Environmental Management (EM)

    Certification Plan Central Characterization Program (CCP) Transuranic Waste Certification Plan This document was used to determine facts and conditions during the Department of...

  13. Central Characterization Program (CCP) Acceptable Knowledge Documentat...

    Office of Environmental Management (EM)

    Acceptable Knowledge Documentation Central Characterization Program (CCP) Acceptable Knowledge Documentation This document was used to determine facts and conditions during the...

  14. The Synthesis and Characterization of Substituted Phosphates...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Phosphates and Layered Manganese Oxides The Synthesis and Characterization of Substituted Phosphates and Layered Manganese Oxides 2011 DOE Hydrogen and Fuel Cells Program, and...

  15. Characterization of Catalysts for Aftertreatment and Biomass...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Stories from the High Temperature Materials Laboratory (HTML) User Program Characterization of Catalysts for Aftertreatment and Biomass-derived Fuels: Success Stories from...

  16. Integrated Surface Geophysical Methods for Characterization of...

    Open Energy Info (EERE)

    LibraryAdd to library Web Site: Integrated Surface Geophysical Methods for Characterization of the Naval Air Warfare Center, New Jersey Author USGS Published Publisher Not...

  17. Central Characterization Program (CCP) Transuranic Authorized...

    Office of Environmental Management (EM)

    Authorized Methods for Payload Control Central Characterization Program (CCP) Transuranic Authorized Methods for Payload Control This document was used to determine facts and...

  18. Central Characterization Program (CCP) TRU Nonconforming Item...

    Office of Environmental Management (EM)

    TRU Nonconforming Item Reporting and Control Central Characterization Program (CCP) TRU Nonconforming Item Reporting and Control This document was used to determine facts and...

  19. Spectroscopic Characterization of Extracellular Polymeric Substances...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    by Escherichia coli and Serratia marcescens were characterized in detail using Fourier transform infrared spectroscopy (FTIR), X-ray photoelectron spectroscopy (XPS), and...

  20. Characterization of Amorphous Zinc Tin Oxide Semiconductors....

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Amorphous Zinc Tin Oxide Semiconductors. Characterization of Amorphous Zinc Tin Oxide Semiconductors. Abstract: Amorphous zinc tin oxide (ZTO) was investigated to determine the...

  1. Design and characterization of artificial transcriptional terminators

    E-Print Network [OSTI]

    Huang, Haiyao

    2007-01-01T23:59:59.000Z

    Design and characterization of artificial transcriptional terminators. Ten new terminators were designed based on previous research of terminator structure and termination efficiency. The terminators were built by PCR ...

  2. NREL: Biomass Research - Biomass Characterization Projects

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    before and after pretreatment and during processing. The characterization of biomass feedstocks, intermediates, and products is a critical step in optimizing biomass conversion...

  3. Geothermal: Sponsored by OSTI -- Fracture Characterization in...

    Office of Scientific and Technical Information (OSTI)

    Fracture Characterization in Enhanced Geothermal Systems by Wellbore and Reservoir Analysis Geothermal Technologies Legacy Collection HelpFAQ | Site Map | Contact Us | Admin Log...

  4. Measurement and Characterization of Unregulated Emissions from...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    May 18-22, 2009 -- Washington D.C. ace30storey.pdf More Documents & Publications Measurement and Characterization of Unregulated Emissions from Advanced Technologies...

  5. Measurement and Characterization of NOx Adsorber Regeneration...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    NOx Adsorber Regeneration and Desulfation Measurement and Characterization of NOx Adsorber Regeneration and Desulfation 2003 DEER Conference Presentation: Oak Ridge National...

  6. Seismic Fracture Characterization Methods for Enhanced Geothermal...

    Broader source: Energy.gov (indexed) [DOE]

    5 4.5.2 Seismic Fracture Characterization Methods for Enhanced Geothermal Systems Presentation Number: 022 Investigator: Queen, John (Hi-Q Geophysical Inc.) Objectives: To develop...

  7. Seismic Fracture Characterization Methods for Enhanced Geothermal...

    Broader source: Energy.gov (indexed) [DOE]

    Seismic Fracture Characterization Methods for Enhanced Geothermal Systems Principal Investigator: John H. Queen Hi-Q Geophysical Inc. Track Name: Seismicity and Reservoir Fracture...

  8. Preliminary Flood Plain Characterization Appendix A

    E-Print Network [OSTI]

    Characterization August 2010 Table of Contents 1 Introduction................................................................................................................................2 2.2 Grab Groundwater Sampling..................................................................................................3 2.5 Data Collection for Geochemical Modeling

  9. Flexible Pressure Sensors: Modeling and Experimental Characterization

    E-Print Network [OSTI]

    Viana, J.C.

    Flexible capacitive pressure sensors fabricated with nanocomposites were experimentally characterized and results compared with simulations from analytical modeling. Unlike traditional diaphragm silicon pressure sensors, ...

  10. Key to Juniperus of Mexico and Guatemala rev. 2/2011 1a.Whip-and scale-leaf margins entire (20 X) or with irregular teeth (40 X) and then with

    E-Print Network [OSTI]

    Adams, Robert P.

    . mucronata 4b. Seed cones globose, rarely bi-lobed, twigs (6-15 mm diam.) with bark exfoliating in plates-leaf margins denticulate (20 X) 6a. Seed cones (1) 2 - 11 seeded, if 1 seeded, then bark exfoliating/cone), fibrous to obscurely woody; trunk bark exfoliating in quadrangular plates or if trunk exfoliating

  11. National Geo-Database for Biofuel Simulations and Regional Analysis of Biorefinery Siting Based on Cellulosic Feedstock Grown on Marginal Lands

    SciTech Connect (OSTI)

    Izaurralde, Roberto C.; Zhang, Xuesong; Sahajpal, Ritvik; Manowitz, David H.

    2012-04-01T23:59:59.000Z

    The goal of this project undertaken by GLBRC (Great Lakes Bioenergy Research Center) Area 4 (Sustainability) modelers is to develop a national capability to model feedstock supply, ethanol production, and biogeochemical impacts of cellulosic biofuels. The results of this project contribute to sustainability goals of the GLBRC; i.e. to contribute to developing a sustainable bioenergy economy: one that is profitable to farmers and refiners, acceptable to society, and environmentally sound. A sustainable bioenergy economy will also contribute, in a fundamental way, to meeting national objectives on energy security and climate mitigation. The specific objectives of this study are to: (1) develop a spatially explicit national geodatabase for conducting biofuel simulation studies and (4) locate possible sites for the establishment of cellulosic ethanol biorefineries. To address the first objective, we developed SENGBEM (Spatially Explicit National Geodatabase for Biofuel and Environmental Modeling), a 60-m resolution geodatabase of the conterminous USA containing data on: (1) climate, (2) soils, (3) topography, (4) hydrography, (5) land cover/ land use (LCLU), and (6) ancillary data (e.g., road networks, federal and state lands, national and state parks, etc.). A unique feature of SENGBEM is its 2008-2010 crop rotation data, a crucially important component for simulating productivity and biogeochemical cycles as well as land-use changes associated with biofuel cropping. ARRA support for this project and to the PNNL Joint Global Change Research Institute enabled us to create an advanced computing infrastructure to execute millions of simulations, conduct post-processing calculations, store input and output data, and visualize results. These computing resources included two components installed at the Research Data Center of the University of Maryland. The first resource was 'deltac': an 8-core Linux server, dedicated to county-level and state-level simulations and PostgreSQL database hosting. The second resource was the DOE-JGCRI 'Evergreen' cluster, capable of executing millions of simulations in relatively short periods. ARRA funding also supported a PhD student from UMD who worked on creating the geodatabases and executing some of the simulations in this study. Using a physically based classification of marginal lands, we simulated production of cellulosic feedstocks from perennial mixtures grown on these lands in the US Midwest. Marginal lands in the western states of the US Midwest appear to have significant potential to supply feedstocks to a cellulosic biofuel industry. Similar results were obtained with simulations of N-fertilized perennial mixtures. A detailed spatial analysis allowed for the identification of possible locations for the establishment of 34 cellulosic ethanol biorefineries with an annual production capacity of 5.6 billion gallons. In summary, we have reported on the development of a spatially explicit national geodatabase to conduct biofuel simulation studies and provided simulation results on the potential of perennial cropping systems to serve as feedstocks for the production of cellulosic ethanol. To accomplish this, we have employed sophisticated spatial analysis methods in combination with the process-based biogeochemical model EPIC. The results of this study will be submitted to the USDOE Bioenergy Knowledge Discovery Framework as a way to contribute to the development of a sustainable bioenergy industry. This work provided the opportunity to test the hypothesis that marginal lands can serve as sources of cellulosic feedstocks and thus contribute to avoid potential conflicts between bioenergy and food production systems. This work, we believe, opens the door for further analysis on the characteristics of cellulosic feedstocks as major contributors to the development of a sustainable bioenergy economy.

  12. THERMOGRAVIMETRIC CHARACTERIZATION OF GLOVEBOX GLOVES

    SciTech Connect (OSTI)

    Korinko, P.

    2012-02-29T23:59:59.000Z

    An experimental project was initiated to characterize mass loss when heating different polymer glovebox glove material samples to three elevated temperatures, 90, 120, and 150 C. Samples from ten different polymeric gloves that are being considered for use in the tritium gloveboxes were tested. The intent of the study was to determine the amount of material lost. These data will be used in a subsequent study to characterize the composition of the material lost. One goal of the study was to determine which glove composition would least affect the glovebox atmosphere stripper system. Samples lost most of the mass in the initial 60 minutes of thermal exposure and as expected increasing the temperature increased the mass loss and shortened the time to achieve a steady state loss. The most mass loss was experienced by Jung butyl-Hypalon{reg_sign} at 146 C with 12.9% mass loss followed by Piercan Hypalon{reg_sign} at 144 C with 11.4 % mass loss and Jung butyl-Viton{reg_sign} at 140 C with 5.2% mass loss. The least mass loss was experienced by the Jung Viton{reg_sign} and the Piercan polyurethane. Unlike the permeation testing (1) the vendor and fabrication route influences the amount of gaseous species that is evolved. Additional testing to characterize these products is recommended. Savannah River Site (SRS) has many gloveboxes deployed in the Tritium Facility. These gloveboxes are used to protect the workers and to ensure a suitable environment in which to handle tritium gas products. The gas atmosphere in the gloveboxes is purified using a stripper system. The process gas strippers collect molecules that may have hydrogen or its isotopes attached, e.g., waters of hydration, acids, etc. Recently, sulfur containing compounds were detected in the stripper system and the presence of these compounds accelerates the stripper system's aging process. This accelerated aging requires the strippers to be replaced more often which can impact the facility's schedule and operational cost. It was posited that sulfur bearing and other volatile compounds were derived from glove off-gassing. Due to the large number of gloves in the facility, small mass loss from each glove could result in a significant total mass of undesirable material entering the glovebox atmosphere and subsequently the stripper system. A thermogravimetric analysis (TGA) study was conducted to determine the amount of low temperature volatiles that may be expected to offgas from the gloves. The data were taken on relatively small samples but are normalized with respect to the sample's surface area. Additional testing is needed to determine the composition of the off-gassing species. The TGA study was conducted to ascertain the magnitude of the issue and to determine if further experimentation is warranted or necessary.

  13. Expedited Site Characterization Geophysics: Geophysical Methods and Tools for Site Characterization

    E-Print Network [OSTI]

    Goldstein, N.E.

    2009-01-01T23:59:59.000Z

    battery belt, 4 batteries, 2 chargers ) IO0 ,,L t ,, , i l,, E__d CharacterizationCharacterization Geophysics SPECIFICATIONS: TEMI3 MAGNETIC ANTENNA General Power: Two 9V alkaline batteries BatteryCharacterization Geophysics RESISTIVITY/ INDUCED POLARIZATION (_nt'd/ For the standard resistivit 7 technique, a battery-

  14. Performance Characterization of Random Proximity Sensor Networks

    E-Print Network [OSTI]

    Jensen, Grant J.

    Performance Characterization of Random Proximity Sensor Networks Agostino Capponi Department-- In this paper, we characterize the localization per- formance and connectivity of sensors networks consisting for signal processing. Each sensor has severe constraints on the battery power, and can only communicate

  15. Characterization monitoring & sensor technology crosscutting program

    SciTech Connect (OSTI)

    NONE

    1996-08-01T23:59:59.000Z

    The purpose of the Characterization, Monitoring, and Sensor Technology Crosscutting Program (CMST-CP) is to deliver appropriate characterization, monitoring, and sensor technology (CMST) to the OFfice of Waste Management (EM-30), the Office of Environmental Restoration (EM-40), and the Office of Facility Transition and Management (EM-60).

  16. GEOMECHANICAL MODELING AS A RESERVOIR CHARACTERIZATION TOOL

    E-Print Network [OSTI]

    GEOMECHANICAL MODELING AS A RESERVOIR CHARACTERIZATION TOOL AT RULISON FIELD, PICEANCE BASIN _______________ ____________________ Dr. Terence K. Young Department Head Department of Geophysics ii #12;ABSTRACT Geomechanics is a powerful reservoir characterization tool. Geomechanical modeling is used here to understand how the in

  17. Characterizing Contextual Equivalence in Calculi with Passivation

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Characterizing Contextual Equivalence in Calculi with Passivation Sergue¨i Lengleta , Alan Schmittb We study the problem of characterizing contextual equivalence in higher-order languages of contextual equivalence in the HOP calculus, an extension of the higher-order -calculus with passivation

  18. A Genetic Algorithm Approach for Technology Characterization

    E-Print Network [OSTI]

    Galvan, Edgar

    2012-10-19T23:59:59.000Z

    A GENETIC ALGORITHM APPROACH FOR TECHNOLOGY CHARACTERIZATION A Thesis by EDGAR GALVAN Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree of MASTER... OF SCIENCE August 2012 Major Subject: Mechanical Engineering A Genetic Algorithm Approach for Technology Characterization Copyright 2012 Edgar Galvan A GENETIC ALGORITHM APPROACH FOR TECHNOLOGY...

  19. Characterization techniques for surface-micromachined devices

    SciTech Connect (OSTI)

    Eaton, W.P.; Smith, N.F.; Irwin, L.; Tanner, D.M.

    1998-08-01T23:59:59.000Z

    Using a microengine as the primary test vehicle, the authors have examined several aspects of characterization. Parametric measurements provide fabrication process information. Drive signal optimization is necessary for increased microengine performance. Finally, electrical characterization of resonant frequency and quality factor can be more accurate than visual techniques.

  20. Laboratory characterization of rock joints

    SciTech Connect (OSTI)

    Hsiung, S.M.; Kana, D.D.; Ahola, M.P.; Chowdhury, A.H.; Ghosh, A. [Southwest Research Inst., San Antonio, TX (United States). Center for Nuclear Waste Regulatory Analyses

    1994-05-01T23:59:59.000Z

    A laboratory characterization of the Apache Leap tuff joints under cyclic pseudostatic and dynamic loads has been undertaken to obtain a better understanding of dynamic joint shear behavior and to generate a complete data set that can be used for validation of existing rock-joint models. Study has indicated that available methods for determining joint roughness coefficient (JRC) significantly underestimate the roughness coefficient of the Apache Leap tuff joints, that will lead to an underestimation of the joint shear strength. The results of the direct shear tests have indicated that both under cyclic pseudostatic and dynamic loadings the joint resistance upon reverse shearing is smaller than that of forward shearing and the joint dilation resulting from forward shearing recovers during reverse shearing. Within the range of variation of shearing velocity used in these tests, the shearing velocity effect on rock-joint behavior seems to be minor, and no noticeable effect on the peak joint shear strength and the joint shear strength for the reverse shearing is observed.

  1. Hydrogeologic characterization of Illinois wetlands

    SciTech Connect (OSTI)

    Miner, J.J.; Miller, M.V.; Rorick, N.L.; Fucciolo, C.S. (Illinois State Geological Survey, Champaign, IL (United States))

    1994-04-01T23:59:59.000Z

    The Illinois State Geological Survey (ISGS), under contract from the Illinois Department of Transportation (IDOT), is evaluating a series of selected wetlands and sites proposed for wetland construction and/or restoration. The program is associated with wetland mitigation for unavoidable effects of state highway construction. The goal of this ongoing program is: (1) to collect commonly lacking geologic, geomorphic, hydrologic, and geochemical data from various wetland sites; and (2) to create a database of this information for use by government agencies and the private sector. Some of the potential uses of this database include: (1) determination of history, role, and possible life cycle of various wetland types allowing more effective design criteria; (2) functional comparison of constructed or restored wetlands versus natural wetlands; (3) testing of wetland hypotheses and delineation techniques under a variety of known hydrogeologic conditions in Illinois; (4) hydrogeologic assessment of potential mitigation sites against a suite of known sites; and (5) determination of data and collection methods appropriate for hydrogeologic wetland studies. A series of tasks is required to complete each study. Historical information is collected from ISGS records, including data regarding topography, soils, sediments, bedrock, and local well records. A field-testing plan is prepared, which includes goals of the study, methods, research potential, and potential results. An initial report is prepared after geologic and geochemical characterization and the installation of needed ground water monitoring wells and surface water gauges. After one year of water-level monitoring, a final report is prepared regarding the present conditions of a site. Further monitoring may be required to determine the performance at constructed and/or restored sites.

  2. Double tracks test site characterization report

    SciTech Connect (OSTI)

    NONE

    1996-05-01T23:59:59.000Z

    This report presents the results of site characterization activities performed at the Double Tracks Test Site, located on Range 71 North, of the Nellis Air Force Range (NAFR) in southern Nevada. Site characterization activities included reviewing historical data from the Double Tracks experiment, previous site investigation efforts, and recent site characterization data. The most recent site characterization activities were conducted in support of an interim corrective action to remediate the Double Tracks Test Site to an acceptable risk to human health and the environment. Site characterization was performed using a phased approach. First, previously collected data and historical records sere compiled and reviewed. Generalized scopes of work were then prepared to fill known data gaps. Field activities were conducted and the collected data were then reviewed to determine whether data gaps were filled and whether other areas needed to be investigated. Additional field efforts were then conducted, as required, to adequately characterize the site. Characterization of the Double Tracks Test Site was conducted in accordance with the US Department of Energy`s (DOE) Streamlined Approach for Environmental Restoration (SAFER).

  3. Characterization Well R-22 Geochemistry Report

    SciTech Connect (OSTI)

    Patrick Longmire

    2002-09-01T23:59:59.000Z

    This report provides analytical results for groundwater collected during four characterization-sampling rounds conducted at well R-22 from March 2001 through March 2002. Characterization well R-22 was sampled from March 6 through 13, 2001; June 19 through 26, 2001; November 30 through December 10, 2001; and February 27 through March 7, 2002. The goal of the characterization efforts was to assess the hydrochemistry and to determine whether or not contaminants are present in the regional aquifer in the vicinity of the well. A geochemical evaluation of the analytical results for the well is also presented in this report.

  4. Apparatus and method for characterizing ultrafast polarization varying optical pulses

    DOE Patents [OSTI]

    Smirl, Arthur (1020 Cherry La. Northwest, Iowa City, IA 52240); Trebino, Rick P. (425 Mulqueeny St., Livermore, CA 94550)

    1999-08-10T23:59:59.000Z

    Practical techniques are described for characterizing ultrafast potentially ultraweak, ultrashort optical pulses. The techniques are particularly suited to the measurement of signals from nonlinear optical materials characterization experiments, whose signals are generally too weak for full characterization using conventional techniques.

  5. Characterizing Microprocessor Benchmarks Towards Understanding the Workload Design Space

    E-Print Network [OSTI]

    John, Lizy Kurian

    #12;Characterizing Microprocessor Benchmarks Towards Understanding the Workload Design Space The University of Texas at Austin December 2003 #12;Characterizing Microprocessor Benchmarks Towards #12;Characterizing Microprocessor Benchmarks Towards Understanding the Workload Design Space

  6. Reservoir Characterization Research Laboratory Research Plans for 2013

    E-Print Network [OSTI]

    Texas at Austin, University of

    and Subsurface Characterization of Carbonate Reservoirs for Improved Recovery of Remaining Hydrocarbons Charles#12; Reservoir Characterization Research Laboratory Research Plans for 2013 Outcrop for heavy oil deposits within the Canadian Grosmont Formation. #12;iii Reservoir Characterization Research

  7. Margins of Multinational Labor Substitution

    E-Print Network [OSTI]

    Muendler, Marc-Andreas; Becker, Sascha O.

    2006-01-01T23:59:59.000Z

    Balkan countries, Belarus, Turkey, and Ukraine Developing countries including Russia and Central Asian economies as well as dominions of Western

  8. Tectonic signatures on active margins

    E-Print Network [OSTI]

    Hogarth, Leah Jolynn

    2010-01-01T23:59:59.000Z

    No. 33, pp. 25–40. Tulsa, Oklahoma. Gardner, J.B. ,to hydrocarbon exploration: Tulsa, Oklahoma, Americanto hydrocarbon exploration: Tulsa, Oklahoma, American

  9. Tectonic signatures on active margins

    E-Print Network [OSTI]

    Hogarth, Leah Jolynn

    2010-01-01T23:59:59.000Z

    1977. Seismic stratigraphic interpretation of depositionallocation and seismic lines shown. (For interpretation of the

  10. Tectonic signatures on active margins

    E-Print Network [OSTI]

    Hogarth, Leah Jolynn

    2010-01-01T23:59:59.000Z

    during the last sea-level rise. The healing-phase unitduring the last sea-level rise. This chapter also examineserosion during the sea-level rise, and is mantled by a basal

  11. Tectonic signatures on active margins

    E-Print Network [OSTI]

    Hogarth, Leah Jolynn

    2010-01-01T23:59:59.000Z

    submarine canyons. Sedimentology 50 (4), 625–637. McNinch,SEPM, Concepts in Sedimentology and Paleontology, vol. 7.aggradational phase. Sedimentology 54, 207-221. Swift, D. J.

  12. On the Margin | Jefferson Lab

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative1 First Use of Energy for All Purposes (Fuel and Nonfuel), 2002; Level:Energy: Grid Integration Redefining What's Possible for RenewableSpeeding accessSpeedingOctoberResearch &CEATOmar The U.S.On theOn theOn

  13. Fractal Geometric Characterization of Functionally Graded Materials

    E-Print Network [OSTI]

    Ostoja-Starzewski, Martin

    Fractal Geometric Characterization of Functionally Graded Materials A. Saharan1 ; M. Ostoja graded materials (FGM) is studied from the standpoint of fractal geometry. First, upon introducing fractals, and an interfacial fractal dimension is estimated for varying degrees of fineness. Avariation

  14. Characterization of light weight composite proppants 

    E-Print Network [OSTI]

    Kulkarni, Mandar Chaitanya

    2009-05-15T23:59:59.000Z

    The research objectives are to develop experimental and computational techniques to characterize and to study the influence of polymer coating on the mechanical response of walnut shell particles to be used as proppants. E3-ESEM and Zeiss Axiophot...

  15. Waste Characterization, Reduction, and Repackaging Facility...

    Office of Environmental Management (EM)

    (TSR), ABD-WFM-006, Revision 2.1 Waste Characterization, Reduction, and Repackaging Facility (WCRRF)Technical Safety Requirements (TSR), ABD-WFM-006, Revision 2.1 The...

  16. Characterization of light weight composite proppants

    E-Print Network [OSTI]

    Kulkarni, Mandar Chaitanya

    2009-05-15T23:59:59.000Z

    The research objectives are to develop experimental and computational techniques to characterize and to study the influence of polymer coating on the mechanical response of walnut shell particles to be used as proppants. E3-ESEM and Zeiss Axiophot...

  17. Study of induced seismicity for reservoir characterization

    E-Print Network [OSTI]

    Li, Junlun, Ph. D. Massachusetts Institute of Technology

    2013-01-01T23:59:59.000Z

    The main goal of the thesis is to characterize the attributes of conventional and unconventional reservoirs through passive seismicity. The dissertation is comprised of the development and applications of three new methods, ...

  18. High Throughput Materials Characterization John M. Gregoire

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Paper for Establishing a User Facility for Synchrotron-based High Throughput Materials Characterization John M. Gregoire 1 , Matthew J. Kramer 2 , Apurva Mehta 3 1 Joint Center for...

  19. AUTOMATED FULL-SYSTEM POWER CHARACTERIZATION

    E-Print Network [OSTI]

    Eeckhout, Lieven

    FULL-SYSTEM POWER CHARACTERIZATION WITH DESIRED POWER CHARACTERISTICS ON MULTICORE SERVER PLATFORMS. THE FRAMEWORK CONSTRUCTS FULL-SYSTEM POWER MODELS WITH ERROR BOUNDS ON THE POWER ESTIMATES AND GUIDES THE DESIGN OF ENERGY-EFFICIENT AND COST

  20. Dynamic workload characterization for energy efficient computing

    E-Print Network [OSTI]

    Dhiman, Gaurav

    2011-01-01T23:59:59.000Z

    environments, energy efficient design is key to reduction ofreasons have made energy efficient design an active area ofDesign, 2006. xvi ABSTRACT OF THE DISSERTATION Dynamic Workload Characterization for Energy Efficient

  1. Characterization of Tri-lab Tantalum Plate.

    SciTech Connect (OSTI)

    Buchheit, Thomas E.; Cerreta, Ellen K.; Deibler, Lisa Anne; Chen, Shu-Rong; Michael, Joseph R.

    2014-09-01T23:59:59.000Z

    This report provides a detailed characterization Tri-lab Tantalum (Ta) plate jointly purchased from HCStark Inc. by Sandia, Los Alamos and Lawrence Livermore National Laboratories. Data in this report was compiled from series of material and properties characterization experiments carried out at Sandia (SNL) and Los Alamos (LANL) Laboratories through a leveraged effort funded by the C2 campaign. Results include microstructure characterization detailing the crystallographic texture of the material and an increase in grain size near the end of the rolled plate. Mechanical properties evaluations include, compression cylinder, sub-scale tension specimen, micohardness and instrumented indentation testing. The plate was found to have vastly superior uniformity when compare with previously characterized wrought Ta material. Small but measurable variations in microstructure and properties were noted at the end, and at the top and bottom edges of the plate.

  2. Towards an integrated materials characterization toolbox

    E-Print Network [OSTI]

    Robertson, Ian M.

    The material characterization toolbox has recently experienced a number of parallel revolutionary advances, foreshadowing a time in the near future when material scientists can quantify material structure evolution across ...

  3. Characterization of individual mouse cerebrospinal fluid proteomes...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    in mice has thus far limited individual mouse proteome characterization. Through non-terminal CSF extractions in C57Bl6 mice and high-resolution liquid chromatography-mass...

  4. Alexandria Digital Library Project Content Access Characterization

    E-Print Network [OSTI]

    Janée, Greg

    Alexandria Digital Library Project Content Access Characterization in Digital Libraries Greg Janée · James Frew · David Valentine University of California, Santa Barbara #12;Alexandria Digital Library environments e.g., GIS #12;Alexandria Digital Library Project Janée, Frew, Valentine · Content Access

  5. Biophysical characterization of protein folding and misfolding. 

    E-Print Network [OSTI]

    Schmittschmitt, Jason Peter

    2004-09-30T23:59:59.000Z

    The HPr proteins were characterized as folding by a two-state folding mechanism. Here, we present a comparison of the equilibrium and kinetic folding for the HPr protein from Bacillus subtilis, E coli and a key variant ...

  6. The in vitro characterization of heterologously expressed enzymes to inform in vivo biofuel production optimization

    E-Print Network [OSTI]

    Garcia, David Ernest

    2013-01-01T23:59:59.000Z

    The expression, purification, and kinetic characterizationThe expression, purification, and kinetic characterizationThe expression, purification, and kinetic characterization

  7. Characterization of electromagnetic transients in power substations

    E-Print Network [OSTI]

    Goers, William Chester

    1980-01-01T23:59:59.000Z

    CHARACTERIZATION OF ELECTROMAGNETIC TRANSIENTS IN POWER SUBSTATIONS A Thesis by WILLIAM CHESTER CiOERS, JR. Submitted to the Graduate College of Texas A&M University in partial fulfillment of the requirement for the degree of MASTER... OF SCIENCE December 1980 Major Subject: Electrical Engineering CHARACTERIZATION OF ELECTROMAGNETIC TRANSIENTS IN POWER SUBSTATIONS A Thesis by WILLIAM CHESTER GOERS, JR. Approved as to style and content by: Dr. B. Don Russell (Chairman of Committee...

  8. Tribological Characterization of Carbon Based Solid Lubricants

    E-Print Network [OSTI]

    Sanchez, Carlos Joel

    2012-10-19T23:59:59.000Z

    TRIBOLOGICAL CHARACTERIZATION OF CARBON BASED SOLID LUBRICANTS A Thesis by CARLOS JOEL SANCHEZ Submitted to the Office of Graduate Studies of Texas A&M University in partial fulfillment of the requirements for the degree... of MASTER OF SCIENCE August 2011 Major Subject: Mechanical Engineering TRIBOLOGICAL CHARACTERIZATION OF CARBON BASED SOLID LUBRICANTS A Thesis by CARLOS JOEL SANCHEZ Submitted to the Office of Graduate Studies of Texas...

  9. MNSR transient analyses and thermal hydraulic safety margins for HEU and LEU cores using the RELAP5-3D code

    SciTech Connect (OSTI)

    Dunn, F.E.; Thomas, J.; Liaw, J.; Matos, J.E. [RERTR Program, Argonne National Laboratory, Argonne, IL 60439 (United States)

    2008-07-15T23:59:59.000Z

    For safety analyses to support conversion of MNSR reactors from HEU fuel to LEU fuel, a RELAP5-3D model was set up to simulate the entire MNSR system. This model includes the core, the beryllium reflectors, the water in the tank and the water in the surrounding pool. The MCNP code was used to obtain the power distributions in the core and to obtain reactivity feedback coefficients for the transient analyses. The RELAP5-3D model was validated by comparing measured and calculated data for the NIRR-1 reactor in Nigeria. Comparisons include normal operation at constant power and a 3.77 mk rod withdrawal transient. Excellent agreement was obtained for core coolant inlet and outlet temperatures for operation at constant power, and for power level, coolant inlet temperature, and coolant outlet temperature for the rod withdrawal transient. In addition to the negative reactivity feedbacks from increasing core moderator and fuel temperatures, it was necessary to calculate and include positive reactivity feedback from temperature changes in the radial beryllium reflector and changes in the temperature and density of the water in the tank above the core and at the side of the core. The validated RELAP5-3D model was then used to analyze 3.77 mk rod withdrawal transients for LEU cores with two UO{sub 2} fuel pin designs. The impact of cracking of oxide LEU fuel is discussed. In addition, steady-state power operation at elevated power levels was evaluated to determine steady-state safety margins for onset of nucleate boiling and for onset of significant voiding. (author)

  10. Synthesis, Characterization and Performance of Cathodes for Lithium Ion Batteries

    E-Print Network [OSTI]

    Zhu, Jianxin

    2014-01-01T23:59:59.000Z

    and characterization of spinel Li 4 Ti 5 O 12 nanoparticles anode materials for lithium ion battery.Li-ion battery performance. Figure 34. Characterization of

  11. adrenal mass characterization: Topics by E-print Network

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    that the origin 7 Characterizing Oligosaccharides Using Injected-Ion MobilityMass Spectrometry Chemistry Websites Summary: Characterizing Oligosaccharides Using Injected-Ion...

  12. DOE Awards Small Business Contract for Site Characterization...

    Energy Savers [EERE]

    Site Characterization and Erosion Control Work in Los Alamos, New Mexico DOE Awards Small Business Contract for Site Characterization and Erosion Control Work in Los Alamos, New...

  13. Recommended Best Practices for the Characterization of Storage...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Recommended Best Practices for the Characterization of Storage Properties of Hydrogen Storage Materials Recommended Best Practices for the Characterization of Storage Properties of...

  14. Micro-Spectroscopic Imaging and Characterization of Individually...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Spectroscopic Imaging and Characterization of Individually Identified Ice Nucleating Particles from a Case Field Study. Micro-Spectroscopic Imaging and Characterization of...

  15. Purification and Characterization of [NiFe]-Hydrogenase of Shewanella...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Purification and Characterization of NiFe-Hydrogenase of Shewanella oneidensis MR-1. Purification and Characterization of NiFe-Hydrogenase of Shewanella oneidensis MR-1....

  16. Fracture Characterization in Enhanced Geothermal Systems by Wellbore...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Characterization in Enhanced Geothermal Systems by Wellbore and Reservoir Analysis; 2010 Geothermal Technology Program Peer Review Report Fracture Characterization in Enhanced...

  17. Diesel and Gasoline Engine Emissions: Characterization of Atmosphere...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Characterization of Atmosphere Composition and Health Responses to Inhaled Emissions Diesel and Gasoline Engine Emissions: Characterization of Atmosphere Composition and Health...

  18. Advanced Turbulence Measurements and Signal Processing for Hydropower Flow Characterization

    E-Print Network [OSTI]

    Advanced Turbulence Measurements and Signal Processing for Hydropower Flow Characterization and flow characterization within full scale conventional hydropower systems, at marine and hydrokinetic

  19. Proteogenomic characterization of human colon and rectal cancer...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    characterization of human colon and rectal cancer. Proteogenomic characterization of human colon and rectal cancer. Abstract: We analyzed proteomes of colon and rectal tumors...

  20. Oak Ridge National Laboratory Evaluation for Drum Characterization...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Evaluation for Drum Characterization and Source Term Report Oak Ridge National Laboratory Evaluation for Drum Characterization and Source Term Report This document was used to...

  1. Advanced Characterization of Particles and Particle-Cell Interactions...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Characterization of Particles and Particle-Cell Interactions Advanced Characterization of Particles and Particle-Cell Interactions 2004 Diesel Engine Emissions Reduction (DEER)...

  2. Characterization of Field-Aged Exhaust Gas Recirculation Cooler...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Field-Aged Exhaust Gas Recirculation Cooler Deposits Characterization of Field-Aged Exhaust Gas Recirculation Cooler Deposits Characterized field-aged exhaust gas recirculation...

  3. DOE Awards Small Business Contract for Site Characterization...

    Energy Savers [EERE]

    Contract for Site Characterization and Erosion Control Work in Los Alamos, New Mexico DOE Awards Small Business Contract for Site Characterization and Erosion Control Work...

  4. Advanced 3D Geophysical Imaging Technologies for Geothermal Resource Characterization

    Broader source: Energy.gov [DOE]

    DOE Geothermal Peer Review 2010 - Presentation. This project aims to develop improved geophysical imaging method for characterizing subsurface structure, identify fluid locations, and characterize fractures.

  5. Preparation and in situ Characterization of Surfaces Using Soft...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    in situ Characterization of Surfaces Using Soft-Landing in a Fourier Transform Ion Cyclotron Resonance Mass Preparation and in situ Characterization of Surfaces Using Soft-Landing...

  6. Isolation, Characterization of an Intermediate in an Oxygen Atom...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Characterization of an Intermediate in an Oxygen Atom-Transfer Reaction, and the Determination of the Bond Isolation, Characterization of an Intermediate in an Oxygen Atom-Transfer...

  7. Using X-Ray Computed Tomography in Pore Structure Characterization...

    Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

    Using X-Ray Computed Tomography in Pore Structure Characterization for a Berea Sandstone: Resolution Effect. Using X-Ray Computed Tomography in Pore Structure Characterization for...

  8. CRADA with Cummins on Characterization and Reduction of Combustion...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Cummins on Characterization and Reduction of Combustion Variations CRADA with Cummins on Characterization and Reduction of Combustion Variations 2012 DOE Hydrogen and Fuel Cells...

  9. Auto/Steel Partnership: AHSS Stamping, Strain Rate Characterization...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    AHSS Stamping, Strain Rate Characterization, Sheet Steel Fatigue, AHSS Joining AutoSteel Partnership: AHSS Stamping, Strain Rate Characterization, Sheet Steel Fatigue, AHSS...

  10. Auto/Steel Partnership: Fatigue of AHSS Strain Rate Characterization...

    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

    Fatigue of AHSS Strain Rate Characterization AutoSteel Partnership: Fatigue of AHSS Strain Rate Characterization 2009 DOE Hydrogen Program and Vehicle Technologies Program Annual...

  11. Characterization of Dynamic Loads on Solar Modules with Respect...

    Broader source: Energy.gov (indexed) [DOE]

    Characterization of Dynamic Loads on Solar Modules with Respect to Fracture of Solar Cells Characterization of Dynamic Loads on Solar Modules with Respect to Fracture of Solar...

  12. Characterizing Fractures in the Geysers Geothermal Field by Micro...

    Broader source: Energy.gov (indexed) [DOE]

    Characterizing Fractures in the Geysers Geothermal Field by Micro-seismic Data, Using Soft Computing, Fractals, and Shear Wave Anisotropy Characterizing Fractures in the Geysers...

  13. Summary status of K Basins sludge characterization

    SciTech Connect (OSTI)

    Baker, R.B.

    1995-01-20T23:59:59.000Z

    A number of activities are underway as part of the Spent Nuclear Fuels Project (SNFP) related to the processing and disposing of sludge in the 105-K Basins (K Basins). Efforts to rigorously define data requirements for these activities are being made using the Data Quality Objectives (DQO) process. Summaries of current sludge characterization data are required to both help support this DQO process and to allow continued progress with on-going engineering activities (e.g., evaluations of disposal alternatives). This document provides the status of K Basins sludge characterization data currently available to the Nuclear Fuel Evaluations group. This group is tasked by the SNFP to help develop and maintain the characterization baseline for the K Basins. The specific objectives of this document are to: (1) provide a current summary (and set of references) of sludge characterization data for use by SNFP initiatives, to avoid unnecessary duplication of effort and to support on-going initiatives; (2) submit these data to an open forum for review and comment, and identify additional sources of significant data that may be available; (3) provide a summary of current data to use as part of the basis to develop requirements for additional sludge characterization data through the DQO process; (4) provide an overview of the intended activities that will be used to develop and maintain the sludge characterization baseline.

  14. Machine characterization and benchmark performance prediction

    SciTech Connect (OSTI)

    Saavedra-Barrera, R.H.

    1988-12-01T23:59:59.000Z

    From runs of standard benchmarks or benchmark suites, it is not possible to characterize the machine nor to predict the run time of other benchmarks which have not been run. A new approach to benchmarking and machine characterization is reported. The creation and use of a machine analyzer is described, which measures the performance of a given machine on FORTRAN source language constructs. The machine analyzer yields a set of parameters which characterize the machine and spotlight its strong and weak points. Also described is a program analyzer, which analyzes FORTRAN programs and determines the frequency of execution of each of the same set of source language operations. It is then shown that by combining a machine characterization and a program characterization, we are able to predict with good accuracy the run time of a given benchmark on a given machine. Characterizations are provided for the Cray-X-MP/48, Cyber 205, IBM 3090/200, Amdahl 5840, Convex C-1, VAX 8600, VAX 11/785, VAX 11/780, SUN 3/50, and IBM RT-PC/125, and for the following benchmark programs or suites: Los Alamos (BMK8A1), Baskett, Linpack, Livermore Loops, Madelbrot Set, NAS Kernels, Shell Sort, Smith, Whetstone and Sieve of Erathostenes.

  15. SU-E-J-39: Comparison of PTV Margins Determined by In-Room Stereoscopic Image Guidance and by On-Board Cone Beam Computed Tomography Technique for Brain Radiotherapy Patients

    SciTech Connect (OSTI)

    Ganesh, T; Paul, S; Munshi, A; Sarkar, B; Krishnankutty, S; Sathya, J; George, S; Jassal, K; Roy, S; Mohanti, B [Fortis Memorial Research Institute, Gurgaon (India)

    2014-06-01T23:59:59.000Z

    Purpose: Stereoscopic in room kV image guidance is a faster tool in daily monitoring of patient positioning. Our centre, for the first time in the world, has integrated such a solution from BrainLAB (ExacTrac) with Elekta's volumetric cone beam computed tomography (XVI). Using van Herk's formula, we compared the planning target volume (PTV) margins calculated by both these systems for patients treated with brain radiotherapy. Methods: For a total of 24 patients who received partial or whole brain radiotherapy, verification images were acquired for 524 treatment sessions by XVI and for 334 sessions by ExacTrac out of the total 547 sessions. Systematic and random errors were calculated in cranio-caudal, lateral and antero-posterior directions for both techniques. PTV margins were then determined using van Herk formula. Results: In the cranio-caudal direction, systematic error, random error and the calculated PTV margin were found to be 0.13 cm, 0.12 cm and 0.41 cm with XVI and 0.14 cm, 0.13 cm and 0.44 cm with ExacTrac. The corresponding values in lateral direction were 0.13 cm 0.1 cm and 0.4 cm with XVI and 0.13 cm, 0.12 cm and 0.42 cm with ExacTrac imaging. The same parameters for antero-posterior were for 0.1 cm, 0.11 cm and 0.34 cm with XVI and 0.13 cm, 0.16 cm and 0.43 cm with ExacTrac imaging. The margins estimated with the two imaging modalities were comparable within ± 1 mm limit. Conclusion: Verification of setup errors in the major axes by two independent imaging systems showed the results are comparable and within ± 1 mm. This implies that planar imaging based ExacTrac can yield equal accuracy in setup error determination as the time consuming volumetric imaging which is considered as the gold standard. Accordingly PTV margins estimated by this faster imaging technique can be confidently used in clinical setup.

  16. Feature Detection, Characterization and Confirmation Methodology: Final Report

    E-Print Network [OSTI]

    Karasaki, Kenzi

    2009-01-01T23:59:59.000Z

    modeling and groundwater flow analysis ? strategy for characterizing a new site ? 255 Introduction..

  17. Laboratory for Characterization of Irradiated Graphite

    SciTech Connect (OSTI)

    Karen A. Moore

    2010-03-01T23:59:59.000Z

    The newly completed Idaho National Laboratory (INL) Carbon Characterization Laboratory (CCL) is located in Labs C19 and C20 of the Idaho National Laboratory Research Center (IRC). The CCL was established under the Next Generation Nuclear Plant (NGNP) Project to support graphite and ceramic composite research and development activities. The research is in support of the Advanced Graphite Creep (AGC) experiment — a major material irradiation experiment within the NGNP Graphite program. The CCL is designed to characterize and test low activated irradiated materials such as high purity graphite, carbon-carbon composites, and silicon-carbide composite materials. The laboratory is fully capable of characterizing material properties for both irradiated and nonirradiated materials.

  18. Characterization of oil and gas reservoir heterogeneity

    SciTech Connect (OSTI)

    Not Available

    1991-01-01T23:59:59.000Z

    The objective of the cooperative research program is to characterize Alaskan reservoirs in terms of their reserves, physical and chemical properties, geologic configuration and structure, and the development potential. The tasks completed during this period include: (1) geologic reservoir description of Endicott Field; (2) petrographic characterization of core samples taken from selected stratigraphic horizons of the West Sak and Ugnu (Brookian) wells; (3) development of a polydispersed thermodynamic model for predicting asphaltene equilibria and asphaltene precipitation from crude oil-solvent mixtures, and (4) preliminary geologic description of the Milne Point Unit.

  19. Petrographic characterization of economizer fly ash

    SciTech Connect (OSTI)

    Valentim, B.; Hower, J.C.; Soares, S.; Guedes, A.; Garcia, C.; Flores, D.; Oliveira, A. [University of Porto, Oporto (Portugal). Center of Geology

    2009-11-15T23:59:59.000Z

    Policies for reducing NOx emissions have led power plants to restrict O{sub 2}, resulting in high-carbon fly ash production. Therefore, some potentially useful fly ash, such as the economizer fly ash, is discarded without a thorough knowledge of its composition. In order to characterize this type of fly ash, samples were collected from the economizer Portuguese power plant burning two low-sulfur bituminous coals. Characterization was also performed on economizer fly ash subsamples after wet sieving, density and magnetic separation. Analysis included atomic absorption spectroscopy, loss-on-ignition, scanning electron microscopy/energy-dispersive X-ray spectroscopy, optical microscopy, and micro-Raman spectroscopy.

  20. 4. International reservoir characterization technical conference

    SciTech Connect (OSTI)

    NONE

    1997-04-01T23:59:59.000Z

    This volume contains the Proceedings of the Fourth International Reservoir Characterization Technical Conference held March 2-4, 1997 in Houston, Texas. The theme for the conference was Advances in Reservoir Characterization for Effective Reservoir Management. On March 2, 1997, the DOE Class Workshop kicked off with tutorials by Dr. Steve Begg (BP Exploration) and Dr. Ganesh Thakur (Chevron). Tutorial presentations are not included in these Proceedings but may be available from the authors. The conference consisted of the following topics: data acquisition; reservoir modeling; scaling reservoir properties; and managing uncertainty. Selected papers have been processed separately for inclusion in the Energy Science and Technology database.

  1. Updated U.S. Geothermal Supply Characterization

    SciTech Connect (OSTI)

    Petty, S.; Porro, G.

    2007-03-01T23:59:59.000Z

    This paper documents the approach taken to characterize and represent an updated assessment of U.S. geothermal supply for use in forecasting the penetration of geothermal electrical generation in the National Energy Modeling System (NEMS). This work is motivated by several factors: The supply characterization used as the basis of several recent U.S. Department of Energy (DOE) forecasts of geothermal capacity is outdated; additional geothermal resource assessments have been published; and a new costing tool that incorporates current technology, engineering practices, and associated costs has been released.

  2. Spatiotemporal characterization of ultrashort optical vortex pulses

    E-Print Network [OSTI]

    Miranda, Miguel; Rudawski, Piotr; Guo, Chen; Harth, Anne; L'Huillier, Anne; Arnold, Cord L

    2015-01-01T23:59:59.000Z

    Generation of few-cycle optical vortex pulses is challenging due to the large spectral bandwidths, as most vortex generation techniques are designed for monochromatic light. In this work, we use a spiral phase plate to generate few-cycle optical vortices from an ultrafast titanium:sapphire oscillator, and characterize them in the spatiotemporal domain using a recently introduced technique based on spatially resolved Fourier transform spectrometry. The performance of this simple approach to the generation of optical vortices is analyzed from a wavelength dependent perspective, as well as in the spatiotemporal domain, allowing us to completely characterize ultrashort vortex pulses in space, frequency, and time.

  3. Characterization of Fernald Silo 3 Waste

    SciTech Connect (OSTI)

    Langton, C.A.

    2001-04-04T23:59:59.000Z

    This report summarizes characterization results for uranium residues from the Fernald Environmental Management Project (FEMP) Operable Unit (OU-4). These residues are currently stored in a one-million-gallon concrete silo, Silo 3, at the DOE Fernald Site, Ohio. Characterization of the Silo 3 waste is the first part of a three part study requested by Rocky Mountain Remedial Services (RMRS) through a Work for others Agreement, WFO-00-007, between the Westinghouse Savannah River Company (WSRC) and RMRS. Parts 2 and 3 of this effort include bench- and pilot-scale testing.

  4. JOHNSON-MATTHEY DIFFUSER CHARACTERIZATION TESTING

    SciTech Connect (OSTI)

    Foster, P; James Klein, J; Henry Sessions, H; Gregg Morgan, G

    2007-08-02T23:59:59.000Z

    A diffuser/permeator commercially fabricated by Johnson-Matthey was purchased for characterization testing at the Savannah River National Laboratory (SRNL). A test system was fabricated to not only feed and bleed flows and pressures, but also permeate pressure for flows up to 20 SLPM.

  5. Tank 241-TY-101 Tank Characterization Plan

    SciTech Connect (OSTI)

    Homi, C.S.

    1995-03-20T23:59:59.000Z

    This document is a plan which serves as the contractual agreement between the Characterization Program, Sampling Operations, Oak Ridge National Laboratory, and PNL tank vapor program. The scope of this plan is to provide guidance for the sampling and analysis of vapor samples from tank 241-TY-101.

  6. Tank 241-SX-103 tank characterization plan

    SciTech Connect (OSTI)

    Homi, C.S.

    1995-03-08T23:59:59.000Z

    This document is a plan which serves as the contractual agreement between the Characterization Program, Sampling Operations, Oak Ridge National Laboratory, and PNL tank vapor program. The scope of this plan is to provide guidance for the sampling and analysis of vapor samples from tank 241-SX-103.

  7. Tank 241-U-111 tank characterization plan

    SciTech Connect (OSTI)

    Carpenter, B.C.

    1995-01-24T23:59:59.000Z

    This document is a plan which serves as the contractual agreement between the Characterization Program, Sampling Operations, Oak Ridge National Laboratory, and PNL tank vapor program. The scope of this plan is to provide guidance for the sampling and analysis of vapor samples from tank 241-U-111.

  8. Tank 241-S-111: Tank characterization plan

    SciTech Connect (OSTI)

    Homi, C.S.

    1995-03-07T23:59:59.000Z

    This document is a plan which serves as the contractual agreement between the Characterization Program, Sampling Operations, ORNL, and PNL tank vapor program. Scope of this plan is to provide guidance for sampling and analysis of vapor samples from tank 241-S-111 (this tank is on the organic and flammable gas watch list). This tank received Redox plant waste, among other wastes.

  9. Tank 241-T-107 tank characterization plan

    SciTech Connect (OSTI)

    Homi, C.S.

    1995-01-05T23:59:59.000Z

    This document is a plan which serves as the contractual agreement between the Characterization Program, Sampling Operations, Oak Ridge National Laboratory, and PNL tank vapor program. The scope of this plan is to provide guidance for the sampling and analysis of vapor samples from tank 241-T-107.

  10. Engineering Notes Ice Shape Characterization Using

    E-Print Network [OSTI]

    Tino, Peter

    Engineering Notes Ice Shape Characterization Using Self-Organizing Maps Stephen T. McClain Baylor. Introduction DURING the validation and verification of ice accretion codes, predicted ice shapes must be compared with experimental measurements of wind-tunnel or atmospheric ice shapes. Current methods for ice

  11. LATERAL LANDFILL GAS MIGRATION: CHARACTERIZATION AND

    E-Print Network [OSTI]

    Boyer, Edmond

    LATERAL LANDFILL GAS MIGRATION: CHARACTERIZATION AND PRELIMINARY MODELING RESULTS O.BOUR*, E,UniversitéLaval, Sainte-Foy, Canada SUMMARY: Lateral landfill gas migration occurs in the surroundings of a MSW landfill complementary physical measures were used to build a conceptual model of lateral landfill gas migration

  12. Synthesis and characterization of new cystalline titanates

    E-Print Network [OSTI]

    Nge, Renita

    1994-01-01T23:59:59.000Z

    objective of this research. The synthesis of these layered materials had been reported previously by Anthony and Dosch (1 990) and Anthony et al. (I 992). Prior to scaling the synthesis from 3 grams to 100 grams batches for characterization purposes...

  13. Characterization of reconnecting vortices in superfluid helium

    E-Print Network [OSTI]

    Texas at Austin. University of

    Characterization of reconnecting vortices in superfluid helium Gregory P. Bewley*, Matthew S experimental observations of reconnection between quantized vortices in superfluid helium. We do so by imaging. reconnection Vorticity in superfluid helium is confined to filaments that are only angstroms in diameter

  14. CHARACTERIZATION OF SHAPE MEMORY ALLOY BEHAVIOR AND

    E-Print Network [OSTI]

    Valasek, John

    CHARACTERIZATION OF SHAPE MEMORY ALLOY BEHAVIOR AND POSITION CONTROL USING REINFORCEMENT LEARNING for Intelligent Bio-Nano Materials and Structures for Aerospace Vehicles Problem: Shape Memory Alloy and Structures for Aerospace Vehicles 4 Shape Memory Alloys (SMAs) Metallic Alloys used as actuators Shape Memory

  15. Fall Rubber Colloquium CHARACTERIZATION OF DISPERSION

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    9th Fall Rubber Colloquium CHARACTERIZATION OF DISPERSION MECHANISMS OF AGGLOMERATED FILLERS (styrene-butadiene rubber). The objective was to determine the role of the intrinsic parameters Carbon black and silica are widely used as reinforcing fillers for rubber compounds in the tire industry

  16. Terrain Characterization and Classification with a Mobile

    E-Print Network [OSTI]

    Borenstein, Johann

    , commonly known categories, such as gravel, sand, or as- phalt. Terrain characterization, on the other hand aims at associating terrain with well-defined categories, such as gravel, sand, or dirt. A related for a turn is lower when driving over sand or wet grass than when driving on packed dirt or asphalt. In order

  17. Maintenance and Prevention: Formalization and Fixpoint Characterization

    E-Print Network [OSTI]

    Maintenance and Prevention: Formalization and Fixpoint Characterization Munindar P. Singh Maintenance and prevention are important concepts in the science of intel­ ligent systems, yet serious research attention. Maintenance and prevention are duals of each other, but cannot be reduced

  18. Neutron based elemental characterization of coal

    SciTech Connect (OSTI)

    Dep, L.; Vourvopoulos, G. [Western Kentucky Univ., Bowling Green, KY (United States)

    1996-12-31T23:59:59.000Z

    An elemental characterization system based on a 14 MeV neutron generator is described. The results of sulfur content measurement in coal with a precision acceptable to the coal industry are presented. The preliminary results of measuring carbon, oxygen, and sodium are shown.

  19. Characterization of BCl3/N-2 plasmas

    E-Print Network [OSTI]

    Sia, S. F.

    2003-08-15T23:59:59.000Z

    measured with a DekTak surface a! Electronic mail: nordhed@ku.edu Characterization of BCl 3 N 2 plasmas Karen J. Nordheden a) and Joanne F. Sia Plasma Research Laboratory, Department of Chemical and Lawrence, Kansas 66045 ~Received 25 April 2003; accepted...

  20. CHARACTERIZING UNCERTAIN SEA LEVEL RISE PROJECTIONS TO

    E-Print Network [OSTI]

    identifies scenarios where a decision to invest in near-term response to extreme sea level rise passes a cost. Keywords: Sea level rise, robust decision-making, climate change adaptation, cost-benefit analysis PleaseCHARACTERIZING UNCERTAIN SEA LEVEL RISE PROJECTIONS TO SUPPORT INVESTMENT DECISIONS

  1. Characterizing Residential Broadband Networks Marcel Dischinger

    E-Print Network [OSTI]

    Saroiu, Stefan

    Characterizing Residential Broadband Networks Marcel Dischinger MPI for Software Systems mdischin and rapidly growing proportion of users connect to the Internet via residential broadband networks such as Dig- ital Subscriber Lines (DSL) and cable. Residential networks are often the bottleneck in the last mile

  2. Reservoir Characterization Using Intelligent Seismic Inversion

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    reservoir performance. Field Development #12;- Issues about the data and problems regarding data analysis characterization studies. - Inverse modeling of reservoir properties from the seismic data is known as seismic inversion. SEISMIC LOGS #12;1. Does a relationship exist between seismic data and reservoir characteristics

  3. Characterization of Commercial Sites Selected for

    E-Print Network [OSTI]

    Energy Institute School of Ocean and Earth Science and Technology University of Hawai`i January 2014 #12Characterization of Commercial Sites Selected for Energy Efficiency Monitoring Prepared for the U.S. Department of Energy Office of Electricity Delivery and Energy Reliability Under Cooperative Agreement No. DE

  4. ELECTROPHORETIC CHARACTERIZATION OF NORTH AMERICAN POTATO CULTIVARSl

    E-Print Network [OSTI]

    Douches, David S.

    1991) 767 ELECTROPHORETIC CHARACTERIZATION OF NORTH AMERICAN POTATO CULTIVARSl D. S. Douches identify potato cultivars. Both leafand tuber tissue were sampled in thirteen enzyme systems. Two buffer means to discriminate sexually-derived potato cultivars. Compendio Se analizaron un total de 112

  5. Radiological Characterization and Final Facility Status Report Tritium Research Laboratory

    SciTech Connect (OSTI)

    Garcia, T.B.; Gorman, T.P.

    1996-08-01T23:59:59.000Z

    This document contains the specific radiological characterization information on Building 968, the Tritium Research Laboratory (TRL) Complex and Facility. We performed the characterization as outlined in its Radiological Characterization Plan. The Radiological Characterization and Final Facility Status Report (RC&FFSR) provides historic background information on each laboratory within the TRL complex as related to its original and present radiological condition. Along with the work outlined in the Radiological Characterization Plan (RCP), we performed a Radiological Soils Characterization, Radiological and Chemical Characterization of the Waste Water Hold-up System including all drains, and a Radiological Characterization of the Building 968 roof ventilation system. These characterizations will provide the basis for the Sandia National Laboratory, California (SNL/CA) Site Termination Survey .Plan, when appropriate.

  6. Characterization Well R-7 Geochemistry Report

    SciTech Connect (OSTI)

    P.Longmire; F.Goff

    2002-12-01T23:59:59.000Z

    This report provides analytical results for four groundwater-sampling rounds conducted at characterization well R-7. The goal of the characterization efforts was to assess the hydrochemistry and to determine if contaminants from Technical Area (TA)-2 and TA-21 of the Los Alamos National Laboratory (LANL or the Laboratory) are present in the regional aquifer in the vicinity of the well. Figure 1.0-1 shows the well's location in the narrow upper part of Los Alamos Canyon, between the inactive Omega West reactor and the mouth of DP Canyon. Well R-7 is in an excellent location to characterize the hydrology and groundwater chemistry in both perched groundwater and the regional aquifer near sites of known Laboratory effluent release, including radionuclides and inorganic chemicals (Stone et al. 2002, 72717). The Risk Reduction and Environmental Stewardship-Remediation (RRES-R) Program (formerly the Environmental Restoration [ER] Project) installed well R-7 as part of groundwater investigations to satisfy requirements of the ''Hydrogeologic Workplan'' (LANL 1998, 59599) and to support the Laboratory's ''Groundwater Protection Management Program Plan'' (LANL 1996, 70215). Well R-7 was designed primarily to provide geochemical or water quality and hydrogeologic data for the regional aquifer within the Puye Formation. This report also presents a geochemical evaluation of the analytical results for well R-7 and provides hydrogeochemical interpretations using analytical results for groundwater samples collected at the well. Discussion of other hydrogeochemical data collected within the east-central portion of the Laboratory, however, is deferred until they can be evaluated in the context of sitewide information collected from other RRES and Hydrogeologic Workplan characterization wells (R-8A, R-9, and R-9i). Once all deep groundwater investigations in the east-central portion of the Laboratory are completed, geochemical and hydrogeologic conceptual models for the Los Alamos Canyon watershed may be included in a groundwater risk analysis. These models will include an evaluation of potential contaminant transport pathways. Well R-7 was completed on March 9, 2001, with three screens (363.2 to 379.2 ft, 730.4 to 746.4 ft, and 895.5 to 937.4 ft). Screen No.2 was dry during characterization sampling. Four rounds of groundwater characterization samples, collected from a perched zone and the regional aquifer from depths of 378.0 ft (screen No.1) and 915.0 ft (screen No.3), were chemically characterized for radionuclides, metals and trace elements, major ions, high-explosive (HE) compounds, total organic carbon, dissolved organic carbon, organic compounds, and stable isotopes (H, N, and O). Although well R-7 is primarily a characterization well, its design and construction also meet the requirements of a Resource Conservation and Recovery Act (RCRA)-compliant monitoring well as described in the US Environmental Protection Agency (EPA) document ''RCRA Groundwater Monitoring: Draft Technical Guidance,'' November 1992, EPA 530-R-93- 001. Incorporation of this well into a Laboratory-wide groundwater-monitoring program will be considered, and more specifically evaluated (e.g., sampling frequency, analytes, etc.), when the results of the well R-7 characterization activities are comprehensively evaluated in conjunction with other groundwater investigations in the ''Hydrogeologic Workplan'' (LANL 1998, 59599).

  7. Strategic Petroleum Reserve (SPR) additional geologic site characterization studies, Bayou Choctaw salt dome, Louisiana

    SciTech Connect (OSTI)

    Neal, J.T. [Sandia National Labs., Albuquerque, NM (United States); Magorian, T.R. [Magorian (Thomas R.), Amherst, NY (United States); Byrne, K.O.; Denzler, S. [Acres International Corp., Amherst, NY (United States)

    1993-09-01T23:59:59.000Z

    This report revises and updates the geologic site characterization report that was published in 1980. Revised structure maps and sections show interpretative differences in the dome shape and caprock structural contours, especially a major east-west trending shear zone, not mapped in the 1980 report. Excessive gas influx in Caverns 18 and 20 may be associated with this shear zone. Subsidence values at Bayou Choctaw are among the lowest in the SPR system, averaging only about 10 mm/yr but measurement and interpretation issues persist, as observed values often approximate measurement accuracy. Periodic, temporary flooding is a continuing concern because of the low site elevation (less than 10 ft), and this may intensify as future subsidence lowers the surface even further. Cavern 4 was re-sonared in 1992 and the profiles suggest that significant change has not occurred since 1980, thereby reducing the uncertainty of possible overburden collapse -- as occurred at Cavern 7 in 1954. Other potential integrity issues persist, such as the proximity of Cavern 20 to the dome edge, and the narrow web separating Caverns 15 and 17. Injection wells have been used for the disposal of brine but have been only marginally effective thus far; recompletions into more permeable lower Pleistocene gravels may be a practical way of increasing injection capacity and brinefield efficiency. Cavern storage space is limited on this already crowded dome, but 15 MMBBL could be gained by enlarging Cavern 19 and by constructing a new cavern beneath and slightly north of abandoned Cavern 13. Environmental issues center on the low site elevation: the backswamp environment combined with the potential for periodic flooding create conditions that will require continuing surveillance.

  8. Topological characterization in extended quantum Ising models

    E-Print Network [OSTI]

    G. Zhang; Z. Song

    2015-04-01T23:59:59.000Z

    We show that a class of exactly solvable quantum Ising models, including transverse-field Ising model and anisotropic XY model, can be characterized as the loops in a two-dimensional auxiliary space. The transverse-field Ising model corresponds to a circle and the XY model corresponds to an ellipse, while other models yield a Cardioid, Limacon, Hypocycloid, and Lissajous curves, et al.. It is shown that the variation of the ground state energy density, which is a function of the loop, experiences a non-analytical point when the winding number of the corresponding loop changes. The winding number can serve as a topological quantum number of the quantum phases in the extended quantum Ising model, which sheds some light upon the relation between quantum phase transition and the geometrical order parameter characterizing the phase diagram.

  9. Gunfire characterization and simulation using temporal moments

    SciTech Connect (OSTI)

    Smallwood, D.O.

    1994-08-01T23:59:59.000Z

    The concept of band-limited temporal moments is briefly reviewed. An input-output relationship for the band-limited product model is derived. The band-limited product model is then used to characterize and simulate a gunfire record in the following manner. An ensemble of 50 gunfire rounds are averaged to determine the mean response. The mean is subtracted from the original record and the remaining signal is characterized using a smoothed mean square response of the signal filtered into contiguous bandwidths. This operation preserves the lower bandlimited temporal moments of the original data. This smoothed mean square response was used as the deterministic window for the product model. The power spectrum of the response with the mean removed is used to estimate the spectrum for the random part a product model. An additional step varied the repetition rate in a random manner of the simulated gunfire rounds to match the original record in a statistical sense.

  10. Measurement and characterization techniques for thermoelectric materials

    SciTech Connect (OSTI)

    Tritt, T.M.

    1997-07-01T23:59:59.000Z

    Characterization of thermoelectric materials can pose many problems. A temperature difference can be established across these materials as an electrical current is passed due to the Peltier effect. The thermopower of these materials is quite large and thus large thermal voltages can contribute to many of the measurements necessary to investigate these materials. This paper will discuss the chracterization techniques necessary to investigate these materials and provide an overview of some of the potential systematic errors which can arise. It will also discuss some of the corrections one needs to consider. This should provide an introduction to the characterization and measurement of thermoelectric materials and provide references for a more in depth discussion of the concepts. It should also serve as an indication of the care that must be taken while working with thermoelectric materials.

  11. Statistical criteria for characterizing irradiance time series.

    SciTech Connect (OSTI)

    Stein, Joshua S.; Ellis, Abraham; Hansen, Clifford W.

    2010-10-01T23:59:59.000Z

    We propose and examine several statistical criteria for characterizing time series of solar irradiance. Time series of irradiance are used in analyses that seek to quantify the performance of photovoltaic (PV) power systems over time. Time series of irradiance are either measured or are simulated using models. Simulations of irradiance are often calibrated to or generated from statistics for observed irradiance and simulations are validated by comparing the simulation output to the observed irradiance. Criteria used in this comparison should derive from the context of the analyses in which the simulated irradiance is to be used. We examine three statistics that characterize time series and their use as criteria for comparing time series. We demonstrate these statistics using observed irradiance data recorded in August 2007 in Las Vegas, Nevada, and in June 2009 in Albuquerque, New Mexico.

  12. Ultrasonic characterization of single drops of liquids

    DOE Patents [OSTI]

    Sinha, Dipen N. (Los Alamos, NM)

    1998-01-01T23:59:59.000Z

    Ultrasonic characterization of single drops of liquids. The present invention includes the use of two closely spaced transducers, or one transducer and a closely spaced reflector plate, to form an interferometer suitable for ultrasonic characterization of droplet-size and smaller samples without the need for a container. The droplet is held between the interferometer elements, whose distance apart may be adjusted, by surface tension. The surfaces of the interferometer elements may be readily cleansed by a stream of solvent followed by purified air when it is desired to change samples. A single drop of liquid is sufficient for high-quality measurement. Examples of samples which may be investigated using the apparatus and method of the present invention include biological specimens (tear drops; blood and other body fluid samples; samples from tumors, tissues, and organs; secretions from tissues and organs; snake and bee venom, etc.) for diagnostic evaluation, samples in forensic investigations, and detection of drugs in small quantities.

  13. Apparatus for sampling and characterizing aerosols

    DOE Patents [OSTI]

    Dunn, P.F.; Herceg, J.E.; Klocksieben, R.H.

    1984-04-11T23:59:59.000Z

    Apparatus for sampling and characterizing aerosols having a wide particle size range at relatively low velocities may comprise a chamber having an inlet and an outlet, the chamber including: a plurality of vertically stacked, successive particle collection stages; each collection stage includes a separator plate and a channel guide mounted transverse to the separator plate, defining a labyrinthine flow path across the collection stage. An opening in each separator plate provides a path for the aerosols from one collection stage t

  14. Characterization of viscoelastic properties of submarine sediments

    E-Print Network [OSTI]

    King, Jim Bob

    1975-01-01T23:59:59.000Z

    simplified, it is sufficient for the intent of this discussion. From this simplified model of clay structure some of the factors affecting the viscoelastic nature of submarine clays can be identified. When the flocculent clay structure is first subjected... 1975 Major Subject: Civil Engineering CHARACTERIZATION OF VISCOELASTIC PROPERTIES OF SUBMARINE SEDIMENTS A Thesis by Jim Bob King Approved as to sty1e and content by: Chair an of Commi tee Head of Department Member Member December 1975...

  15. Experimental superplastic characterization of advanced aluminum alloys

    E-Print Network [OSTI]

    Kopp, Christopher Carl

    1991-01-01T23:59:59.000Z

    of America Chairman of Advisory Committee: Dr. R. E. Goforth An investigation into the experimental superplastic characterization of advanced aluminum alloys consisted of the design and assembly of an experimental test facility for measuring the effects... of strain-rate, temperature and hydrostatic pressure. The experimental apparatus was designed to accurately monitor these parameters while allowing for active control of the strain-rate and hydrostatic pressure. The results obtained from...

  16. Characterization of Black Carbon Mixing State

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Sedlacek, Arthur; S, Satheesh; Springston, Stephen

    This measurement characterizes the types of BC emissions that result in near­surface BC­ containing particles in a region that is dominated by biomass and open pit/stove cooking. Specifically, examine three primary BC emission sources: (i) urban setting (e.g., fossil fuel emissions); and (ii) biomass burning. Source (i) are captured at the Indian Institute of Science (IISc) in Bangalore. Biomass emissions (ii) contains a series of 1­2 day measurement excursions to the rural area surrounding Bangalore.

  17. Template synthesis and characterizations of nickel nanorods

    SciTech Connect (OSTI)

    Ghosh, T.; Satpati, B. [Saha Institute of Nuclear Physics, 1/AF Bidhannagar, Kolkata-700064 (India)

    2012-06-05T23:59:59.000Z

    Template assisted Ni nanorods were grown using electro-deposition process and investigated using an Analytical Transmission Electron Microscope. Transmission Electron Microscopy (TEM) images and diffraction patterns reveal the polycrystalline nature of grown Ni nanorods and the composition of these nanorods were verified using energy dispersive X-ray (EDX) spectroscopy. The morphology of the grown nanorods was also characterized using Scanning Electron Microscope (SEM).

  18. Historical hydronuclear testing: Characterization and remediation technologies

    SciTech Connect (OSTI)

    Shaulis, L.; Wilson, G.; Jacobson, R.

    1997-09-01T23:59:59.000Z

    This report examines the most current literature and information available on characterization and remediation technologies that could be used on the Nevada Test Site (NTS) historical hydronuclear test areas. Historical hydronuclear tests use high explosives and a small amount of plutonium. The explosion scatters plutonium within a contained subsurface environment. There is currently a need to characterize these test areas to determine the spatial extent of plutonium in the subsurface and whether geohydrologic processes are transporting the plutonium away from the event site. Three technologies were identified to assist in the characterization of the sites. These technologies are the Pipe Explorer{trademark}, cone penetrometer, and drilling. If the characterization results indicate that remediation is needed, three remediation technologies were identified that should be appropriate, namely: capping or sealing the surface, in situ grouting, and in situ vitrification. Capping the surface would prevent vertical infiltration of water into the soil column, but would not restrict lateral movement of vadose zone water. Both the in situ grouting and vitrification techniques would attempt to immobilize the radioactive contaminants to restrict or prevent leaching of the radioactive contaminants into the groundwater. In situ grouting uses penetrometers or boreholes to inject the soil below the contaminant zone with low permeability grout. In situ vitrification melts the soil containing contaminants into a solid block. This technique would provide a significantly longer contaminant immobilization, but some research and development would be required to re-engineer existing systems for use at deep soil depths. Currently, equipment can only handle shallow depth vitrification. After existing documentation on the historical hydronuclear tests have been reviewed and the sites have been visited, more specific recommendations will be made.

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    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

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    Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

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