National Library of Energy BETA

Sample records for industry practices mergers

  1. Mergers and acquisitions in the medical device industry

    E-Print Network [OSTI]

    Ohashi, Kevin Lee

    2007-01-01

    Mergers and acquisitions in the Medical Device Industry are the primary mode of exit for early stage companies. The focus of this thesis is to examine factors which influence the value of these M&A transactions from the ...

  2. Essays on Merger Simulation in Industrial Organization

    E-Print Network [OSTI]

    Kim, Mee Yeon

    2012-01-01

    Overview and Data U.S. Peanut Butter Industry The Mergeron a shopping trip in peanut butter category Table 4:Period Table 22: Regression of Peanut Price vii Page LIST OF

  3. Superior Energy Performance Industrial Facility Best Practice...

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

    Industrial Facility Best Practice Scorecard Superior Energy Performance Industrial Facility Best Practice Scorecard Superior Energy Performance logo Industrial facilities seeking...

  4. Industrial Facility Best Practice Scorecard

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

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i nA Guide toIMPROVEMENT OFBarriers to Industrial Energy Efficiency

  5. Formulation and Analysis of Horizontal Mergers Among Oligopolistic Firms with Insights into the Merger Paradox: A Supply Chain Network Perspective

    E-Print Network [OSTI]

    Nagurney, Anna

    as the merger of Exxon and Mobil in the oil industry (see CNNMoney.com (1999)). The topic of mergers

  6. Facilitating inclusive identity: HR practices, perceived fairness, and intergroup cognitions in corporate mergers 

    E-Print Network [OSTI]

    Shin, Shung Jae

    2004-11-15

    Based on social identity theory, self-categorization theory, and justice theories, this study proposed a theoretical framework for studying the psychological processes that employees go through during the period of post-merger implementation...

  7. Best Practices in Industrial Data Management

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

    or otherwise restricted information. Industrial Data Management What is energy data management? Monitoring Recording Analyzing Reporting ...

  8. Practical Procedures for Auditing Industrial Boiler Plants 

    E-Print Network [OSTI]

    O'Neil, J. P.

    1980-01-01

    Industrial boiler plants are an area of opportunity in virtually every industry to save energy and reduce costs by using relatively simple, inexpensive auditing procedures. An energy audit consists of inspection, measurement, analysis...

  9. Changing Structure of Electric Power Industry 1999: Mergers and Other Corporate Combinations, The

    Reports and Publications (EIA)

    1999-01-01

    Presents data about corporate combinations involving investor-owned utilities in the United States, discusses corporate objectives for entering into such combinations, and assesses their cumulative effects on the structure of the electric power industry.

  10. SUPERIOR ENERGY PERFORMANCE INDUSTRIAL FACILITY BEST PRACTICE SCORECARD

    Broader source: Energy.gov [DOE]

    Facilities seeking to use the Mature Energy Pathway to qualify for Superior Energy Performance® (SEP™) certification will use the SEP Industrial Facility Best Practice Scorecard to assess the...

  11. Analysis of sourcing & procurement practices : a cross industry framework

    E-Print Network [OSTI]

    Koliousis, Ioannis G

    2006-01-01

    This thesis presents and analyzes the various practices in the functional area of Sourcing and Procurement. The 21 firms that are studied operate in one of the following industries: Aerospace, Apparel/ Footwear, Automotive, ...

  12. Certifying Industrial Energy Efficiency Performance: Aligning Management, Measurement, and Practice to Create Market Value

    E-Print Network [OSTI]

    McKane, Aimee; Scheihing, Paul; Williams, Robert

    2008-01-01

    knowledge concerning energy management best practices andapplying and validating energy management best practices inan international industrial energy management standard that

  13. INDUSTRY TRENDS AND PRACTICES The banking industry has become increasingly more complex in

    E-Print Network [OSTI]

    Kühn, Reimer

    and settlement, (6) agency services, (7) asset management, and (8) retail brokerage. The factors loadings and k273 INDUSTRY TRENDS AND PRACTICES The banking industry has become increasingly more complex views presented in this paper are those of the authors and do not necessarily represent models

  14. Air Force Achieves Fuel Efficiency through Industry Best Practices

    SciTech Connect (OSTI)

    2012-12-01

    The U.S. Air Force’s Air Mobility Command (AMC) is changing the way it does business. It is saving energy and money through an aircraft fleet fuel-efficiency program inspired by private industry best practices and ideas resulting from the empowered fuel savings culture.

  15. World Best Practice Energy Intensity Values for Selected Industrial Sectors

    E-Print Network [OSTI]

    Worrell, Ernst; Price, Lynn; Neelis, Maarten; Galitsky, Christina; Zhou, Nan

    2007-01-01

    in the Pulp and Paper Industry: An Energy Benchmarkingin the Pulp and Paper Industries. Integrated Pollutionin the Pulp and Paper Industry: An Energy Benchmarking

  16. World Best Practice Energy Intensity Values for Selected Industrial Sectors

    E-Print Network [OSTI]

    Worrell, Ernst; Price, Lynn; Neelis, Maarten; Galitsky, Christina; Zhou, Nan

    2007-01-01

    1 2. World Best Practice Energy IntensityBrussels: IISI. Best practice energy use is also determinedalong with the best practice energy intensity value for

  17. Nickel-Based Superalloy Welding Practices for Industrial Gas Turbine Applications M.B. Henderson

    E-Print Network [OSTI]

    Cambridge, University of

    1 Nickel-Based Superalloy Welding Practices for Industrial Gas Turbine Applications M.B. Henderson and reduced costs for industrial gas turbine engines demands extended use of high strength-high temperature superalloys are used within the industrial gas turbine (IGT) engine manufacturing industry, specifically

  18. World Best Practice Energy Intensity Values for Selected Industrial Sectors

    E-Print Network [OSTI]

    Worrell, Ernst; Price, Lynn; Neelis, Maarten; Galitsky, Christina; Zhou, Nan

    2007-01-01

    Cost Reduction in the Pulp and Paper Industry: An EnergyTechniques in the Pulp and Paper Industries. IntegratedCost Reduction in the Pulp and Paper Industry: An Energy

  19. An exploration of supply chain management practices in the aerospace industry and in Rolls-Royce

    E-Print Network [OSTI]

    Tiwari, Mohit

    2005-01-01

    This thesis is a part of the Supply Chain 2020 research project which seeks to study best practices in supply chain management in multiple industries in order to develop a deeper understanding of key principles and practices ...

  20. Survey Questionnaire on Environmental Management Practices: Summary of Results by Industry and practices

    E-Print Network [OSTI]

    Delmas, Magali A; Toffel, Michael W.

    2008-01-01

    the majority of the automotive industry respondents haverespondents in the automotive industry have successfullyElectrical Chemicals Automotive Machinery Industry Figure 3:

  1. Survey Questionnaire on Environmental Management Practices: Summary of Results by Industry and practices

    E-Print Network [OSTI]

    Delmas, Magali A; Toffel, Michael W.

    2008-01-01

    External Internal Metals Paper Industry Figure 5: AverageUtilities Refining Industry Paper Metals MachineryUtilities Refining Industry Paper Metals Machinery

  2. World Best Practice Energy Intensity Values for Selected Industrial Sectors

    E-Print Network [OSTI]

    Worrell, Ernst; Price, Lynn; Neelis, Maarten; Galitsky, Christina; Zhou, Nan

    2007-01-01

    Best Practice Final and Primary Energy Intensity Values forWorld Best Practice Primary Energy Intensity Values forRecovered Pulp Note: Primary energy includes electricity

  3. Identifying industrial best practices for the waste minimization of low-level radioactive materials

    SciTech Connect (OSTI)

    Levin, V.

    1996-04-01

    In US DOE, changing circumstances are affecting the management and disposal of solid, low-level radioactive waste (LLW). From 1977 to 1991, the nuclear power industry achieved major reductions in solid waste disposal, and DOE is interested in applying those practices to reduce solid waste at DOE facilities. Project focus was to identify and document commercial nuclear industry best practices for radiological control programs supporting routine operations, outages, and decontamination and decommissioning activities. The project team (DOE facility and nuclear power industry representatives) defined a Work Control Process Model, collected nuclear power industry Best Practices, and made recommendations to minimize LLW at DOE facilities.

  4. READY MIX CONCRETE INDUSTRY ENVIRONMENTAL CODE OF PRACTICE

    E-Print Network [OSTI]

    Solid Waste Management . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21 Solids . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6 Process Description and Waste Management Practices. . . . . . . . . . . . . . . . . . . 7 Waste Waste Solids Disposal . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17

  5. Industrial Energy Efficiency Technical Review Guidelines and Best Practices 

    E-Print Network [OSTI]

    Dalziel, N.

    2013-01-01

    . Methodology and Scope of Research: 1. Empirical analysis of reported energy savings at the application, reviewed (contracted), measurement and verification (M&V) and evaluation stages for multiple large or industrial incentive programs. a. Assess impact...

  6. Best Practices: The Engineering Approach For Industrial Boilers 

    E-Print Network [OSTI]

    Blake, N. R.

    2001-01-01

    A plant's boilers represent a large capital investment, as well as a crucial portion of overall plant operations, regardless of the industry our customers are in. It is important to have systems and procedures in place to protect this investment...

  7. Cyber security best practices for the nuclear industry

    SciTech Connect (OSTI)

    Badr, I.

    2012-07-01

    When deploying software based systems, such as, digital instrumentation and controls for the nuclear industry, it is vital to include cyber security assessment as part of architecture and development process. When integrating and delivering software-intensive systems for the nuclear industry, engineering teams should make use of a secure, requirements driven, software development life cycle, ensuring security compliance and optimum return on investment. Reliability protections, data loss prevention, and privacy enforcement provide a strong case for installing strict cyber security policies. (authors)

  8. An examination of Boeing's supply chain management practices within the context of the global aerospace industry

    E-Print Network [OSTI]

    Çizmeci, DaÄŸ lar

    2005-01-01

    This thesis examines the supply chain management practices of the Boeing Commercial Airplane Company within the context of the global aerospace industry. The methodology used for this study includes a study of emerging ...

  9. The Texas Meat Packing Industry -- Structure, Operational Characteristics, and Competitive Practices 

    E-Print Network [OSTI]

    Dietrich, Raymond A.; Farris, Donald E.

    1976-01-01

    Bulletin] The Texas Meat Packing Industry - Structure, Operational Characteristics, and Competitive Practices Mention of a trademar k'or a proprietary product does not constitute a guarantee or warranty of the product by The Texas Agricultural..., age, or national origin. [Blank Page in Original Bulletin] CONTENT S Page Highlights ................................................... ii Structural Characteristics of the Slaughter Industry ......... 3 Meat Packing Operations...

  10. CHME SUMMER PRACTICE GUIDE 1. Our curriculum requires each student to have two summer practices in industrial

    E-Print Network [OSTI]

    Hasýrcý, Vasýf

    , water and waste treatment, others : Up to 1 week It is known that some plant managers have an attitude practices in industrial plants (CHME 300 and CHME 400), each for a duration of at least 20 working days. 2 themselves with all aspects of plant operation; from raw materials to final products, from management

  11. Flooding of Industrial Facilities -Vulnerability Reduction in Practice

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    any improvement. As human activities historically developed in river areas and floodplains, industrial-use planning in flood-prone areas and vulnerability reduction in flood-prone facilities. This paper focuses of hazardous material, soil or water pollutions by hazardous substances for the environment, fires, explosions

  12. Survey Questionnaire on Environmental Management Practices: Summary of Results by Industry and practices

    E-Print Network [OSTI]

    Delmas, Magali A; Toffel, Michael W.

    2008-01-01

    Environmental Policyadoption of an environmental policy and its communication,Practices 2.1. Environmental Policy 95% of the respondents

  13. Practical Training in Microalgae Utilization with Key Industry Engineering Group Key Industry Engineering Group s.r.o. has developed a biotechnology for the production of an animal

    E-Print Network [OSTI]

    Practical Training in Microalgae Utilization with Key Industry Engineering Group Key Industry on a suspension of Planktochlorella microalgae. The product consists of a suspension of algae in the growing

  14. Evaluating the DSM Potential for Industrial Electrotechnologies and Management Practices 

    E-Print Network [OSTI]

    Harrell, P. J.; Pavone, A.

    1991-01-01

    the commercial penetration of each of these technologies. Factors affecting commercial penetration include ANTHONY PAVONE Senior Consultant SRI International Menlo Park, California the existing level of market penetration, fuel prices, electricity... penetration, fuel prices, electricity prices, capital investment requirements, perceived risk, and internal hurdles rates for investment. In order to fully determine which of these technologies should be included in an industrial DSM program, various HL...

  15. Survey Questionnaire on Environmental Management Practices: Summary of Results by Industry and practices

    E-Print Network [OSTI]

    Delmas, Magali A; Toffel, Michael W.

    2008-01-01

    adoption of an environmental policy and its communication,Environmental PolicyPractices 2.1. Environmental Policy 95% of the respondents

  16. Industrial-Load-Shaping: The Practice of and Prospects for Utility/Industry Cooperation to Manage Peak Electricity Demand 

    E-Print Network [OSTI]

    Bules, D. J.; Rubin, D. E.; Maniates, M. F.

    1986-01-01

    -LOAD-SHAPI1IG: TIlE PRACTICE OF AND PROSPECTS FOR UTILITY/INDUSTRY COOPERATION TO MAUGE PEAK ELECTRICITY DEMAND Donald J. BuIes and David E. Rubin Consultants, Pacific Gas and Electric Company San Francisco, California Michael F. Maniates Energy... and Resources Group, University of California Berkeley, California ABSTRACT Load-management programs designed to reduce demand for electricity during peak periods are becoming increasingly important to electric utilities. For a gf'owing number...

  17. Opinions of persons from outside the livestock industry on the practice of hot-iron jaw branding as perceived by persons from within Texas livestock show industry 

    E-Print Network [OSTI]

    Schlink, Suzanne Marie

    1993-01-01

    efficient education and good sound reasons for every practice. From within, the livestock show industry must spot and mark for change or justify areas of potential or emerging concern. If a practice can be justified by persons within the livestock industry...

  18. The Texas Wholesale Meat Distribution Industry -- Structure, Operational Characteristics and Competitive Practices

    E-Print Network [OSTI]

    Dietrich, Raymond A.

    1976-01-01

    Bulletin] The Texas Wholesale Meat Distribution Industry - Structure, Operational Characteristics, and Competitive Practices Mentior, of a tradehark or a proprietary product does not constitute a guarantee or warranty of the product by The Texas..., religion, sex, age, or national origin. [Blank Page in Original Bulletin] CONTENTS Page Highlights Introduction ............9..8...v..000..000*.00.00.t8 1 Structural Characteristics of the U . S . and Texas Wholesale Meat Industry...

  19. Goal Practice & Experience: Status Quo and Future for Industrial Scale Biomass Energy Development in China

    Broader source: Energy.gov [DOE]

    Breakout Session 3D—Fostering Technology Adoption III: International Market Opportunities in Bioenergy Goal Practice & Experience : Status Quo and Future for Industrial Scale Biomass Energy Development in China Huiyong Zhuang, Research Professor, National Energy Research Center of Liquid Biofuel, National Bio Energy Co., Ltd.

  20. Control Engineering Practice 10 (2002) 615624 Stabilizer design for industrial co-generation systems

    E-Print Network [OSTI]

    Marquez, Horacio J.

    2002-01-01

    ) to other processes to extract bitumen from oil sands, (ii) to numerous turbines to generate electricity bounds. Feedback control is thus used to ensure that the boilers generate enough steam and simultaneouslyControl Engineering Practice 10 (2002) 615­624 Stabilizer design for industrial co

  1. Certifying Industrial Energy Efficiency Performance: AligningManagement, Measurement, and Practice to Create Market Value

    SciTech Connect (OSTI)

    McKane, Aimee; Scheihing, Paul; Williams, Robert

    2007-07-01

    More than fifteen years after the launch of programs in theU.K. and U.S., industry still offers one of the largest opportunities forenergy savings worldwide. The International Energy Agency (IEA) estimatesthe savings potential from cost-optimization of industrial motor-drivensystems alone at 7 percent of global electricity use. The U.S. Departmentof Energy (USDOE) Industrial Technologies Program estimates 7 percentsavings potential in total US industrial energy use through theapplication of proven best practice. Simple paybacks for these types ofprojects are frequently two years or less. The technology required toachieve these savings is widely available; the technical skills requiredto identify energy saving opportunities are known and transferable.Although programs like USDOE's Best Practices have been highlysuccessful, most plants, as supported by 2002 MECS data, remain eitherunaware or unmotivated to improve their energy efficiency--as evidencedby the 98 percent of US industrial facilities reporting to MECS say thatthey lack a full-time energy manager. With the renewed interest in energyefficiency worldwide and the emergence of carbon trading and newfinancial instruments such as white certificates1, there is a need tointroduce greater transparency into the way that industrial facilitiesidentify, develop, and document energy efficiency projects. Historically,industrial energy efficiency projects have been developed by plantengineers, frequently with assistance from consultants and/or supplierswith highly specialized technical skills. Under this scenario,implementation of energy efficiency improvements is dependent onindividuals. These individuals typically include "champions" within anindustrial facility or corporation, working in cooperation withconsultants or suppliers who have substantial knowledge based on years ofexperience. This approach is not easily understood by others without thisspecialized technical knowledge, penetrates the market fairly slowly, andhas no assurance of persistence, since champions may leave the company orbe reassigned after project completion.This paper presents an alternatescenario that builds on the body of expert knowledge concerning energymanagement best practices and the experience of industrial champions toengage industry in continuous energy efficiency improvement at thefacility rather than the individual level. Under this scenario,standardized methodologies for applying and validating energy managementbest practices in industrial facilities will be developed through aconsensus process involving both plant personnel and specializedconsultants and suppliers. The resulting protocols will describe aprocess or framework for conducting an energy savings assessment andverifying the results that will be transparent to policymakers, managers,and the financial community, and validated by a third-party organization.Additionally, a global dialogue is being initiated by the United NationsIndustrial Development Organization (UNIDO) concerning the development ofan international industrial energy management standard that would be ISOcompatible. The proposed scenario will combine the resulting standardwith the best practice protocols for specific energy systems (i.e.,steam, process heating, compressed air, pumping systems, etc.) to formthe foundation of a third party, performance-based certification programfor the overall industrial facility that is compatible with existingmanagement systems, including ISO 9001:2000, 14001:2004 and 6 Sigma. Thelong term goal of this voluntary, industry designed certification programis to develop a transparent, globally accepted system for validatingenergy efficiency projects and management practices. This system wouldcreate a verified record of energy savings with potential market valuethat could be recognized among sectors and countries.

  2. Aerospace mergers and acquisitions from a lean enterprise perspective

    E-Print Network [OSTI]

    Kim, Junhong, 1974-

    2004-01-01

    In the past twenty years, companies in the aerospace industry experienced major transitions: mergers and acquisitions, and lean transformation initiatives. This thesis presents research about the relation of lean efforts ...

  3. A Soft Computing-Based Method for the Identification of Best Practices, With Application in the Petroleum Industry

    E-Print Network [OSTI]

    Mohaghegh, Shahab

    A Soft Computing-Based Method for the Identification of Best Practices, With Application on soft computing techniques. Using this new methodology "best practices" in any operation (industrial practices in any process that can be described by a dataset. The new methodology is based on soft computing

  4. Thinking Globally: How ISO 50001 - Energy Management can make industrial energy efficiency standard practice

    SciTech Connect (OSTI)

    McKane, Aimee; Desai, Deann; Matteini, Marco; Meffert, William; Williams, Robert; Risser, Roland

    2009-08-01

    Industry utilizes very complex systems, consisting of equipment and their human interface, which are organized to meet the production needs of the business. Effective and sustainable energy efficiency programs in an industrial setting require a systems approach to optimize the integrated whole while meeting primary business requirements. Companies that treat energy as a manageable resource and integrate their energy program into their management practices have an organizational context to continually seek opportunities for optimizing their energy use. The purpose of an energy management system standard is to provide guidance for industrial and commercial facilities to integrate energy efficiency into their management practices, including fine-tuning production processes and improving the energy efficiency of industrial systems. The International Organization for Standardization (ISO) has identified energy management as one of its top five priorities for standards development. The new ISO 50001 will establish an international framework for industrial, commercial, or institutional facilities, or entire companies, to manage their energy, including procurement and use. This standard is expected to achieve major, long-term increases in energy efficiency (20percent or more) in industrial, commercial, and institutional facilities and to reduce greenhouse gas (GHG) emissions worldwide.This paper describes the impetus for the international standard, its purpose, scope and significance, and development progress to date. A comparative overview of existing energy management standards is provided, as well as a discussion of capacity-building needs for skilled individuals to assist organizations in adopting the standard. Finally, opportunities and challenges are presented for implementing ISO 50001 in emerging economies and developing countries.

  5. Industry

    E-Print Network [OSTI]

    Bernstein, Lenny

    2008-01-01

    Planta- tion Products and Paper Industry Council, Paper Industry, Confederationof European Paper Industries, Brussels, March 2001. CESP,

  6. Stormwater Best Management Practices (BMPs) for Selected Industrial Sectors in the Lower Fraser Basin

    E-Print Network [OSTI]

    and Preserved Fruit and Vegetable Industry Frozen Fruit and Vegetable Industry Fluid Milk Industry Cane and Beet Sugar Industry Other Food Products Industry (Egg Processing) Brewery Products Industry Sawmill

  7. World Best Practice Energy Intensity Values for SelectedIndustrial Sectors

    SciTech Connect (OSTI)

    Worrell, Ernst; Price, Lynn; Neelis, Maarten; Galitsky,Christina; Zhou, Nan

    2007-06-05

    "World best practice" energy intensity values, representingthe most energy-efficient processes that are in commercial use in atleast one location worldwide, are provided for the production of iron andsteel, aluminium, cement, pulp and paper, ammonia, and ethylene. Energyintensity is expressed in energy use per physical unit of output for eachof these commodities; most commonly these are expressed in metric tonnes(t). The energy intensity values are provided by major energy-consumingprocesses for each industrial sector to allow comparisons at the processlevel. Energy values are provided for final energy, defined as the energyused at the production facility as well as for primary energy, defined asthe energy used at the production facility as well as the energy used toproduce the electricity consumed at the facility. The "best practice"figures for energy consumption provided in this report should beconsidered as indicative, as these may depend strongly on the materialinputs.

  8. Industry

    E-Print Network [OSTI]

    Bernstein, Lenny

    2008-01-01

    for the European Pulp and Paper Industry, Confederation ofin food and pulp and paper industry wastes, turbines tocement, and pulp and paper industries and in the control of

  9. Certifying Industrial Energy Efficiency Performance: Aligning Management, Measurement, and Practice to Create Market Value

    E-Print Network [OSTI]

    McKane, Aimee; Scheihing, Paul; Williams, Robert

    2008-01-01

    LBNL-58504 http://industrial-energy.lbl.gov/node/294Certifying Industrial Energy Efficiency Performance:Williams, United Nations Industrial Development Organization

  10. Thinking Globally: How ISO 50001 - Energy Management can make industrial energy efficiency standard practice

    E-Print Network [OSTI]

    McKane, Aimee

    2010-01-01

    Tracking Industrial Energy Efficiency and CO2 Emissions: Aapplication of Energy Efficiency in Industry, Vienna,for Promoting Industrial Energy Efficiency in Developing

  11. Industry

    E-Print Network [OSTI]

    Bernstein, Lenny

    2008-01-01

    pp. IEA, 2006b: Industrial motor systems energy efficiency:industrial energy efficiency. Presented at Energy Efficiency in Motorenergy-efficient electric motors and motor-systems. These include: (1) industrial

  12. Industry

    E-Print Network [OSTI]

    Bernstein, Lenny

    2008-01-01

    and waste management that take place within industrialpolicies Waste management policies can reduce industrialWaste management policies.56 7.10 Co-benefits of industrial

  13. Industry

    E-Print Network [OSTI]

    Bernstein, Lenny

    2008-01-01

    R.R. ,et al. , 2004: Eco-industrial park initiatives in theCHP plant) form an eco-industrial park that serves as an ex-

  14. An Assessment of the Degree of Implementation of the Lean Aerospace Initiative Principles and Practices within the US Aerospace and Defense Industry

    E-Print Network [OSTI]

    Shaw, Thomas E.

    This report is a formal documentation of the results of an assessment of the degree to which Lean Principles and Practices have been implemented in the US Aerospace and Defense Industry. An Industry Association team prepared ...

  15. Industry

    E-Print Network [OSTI]

    Bernstein, Lenny

    2008-01-01

    cement and pulp and paper industries in China, and in thePulp and Paper Industry, Confederation of European Paper Industries, Brussels, March 2001. CESP, 2004: China’pulp and paper industries (GOI, 2005). There are 39.8 million SMEs in China,

  16. Maintenance approaches and practices in selected foreign nuclear power programs and other US industries: Review and lessons learned

    SciTech Connect (OSTI)

    Not Available

    1990-04-01

    The Commission published a Notice of Proposed Rule-making on Maintenance of Nuclear Power Plants on November 28, 1988, spelling out NRC's expectations in maintenance. In preparing the proposed rule, the NRC reviewed maintenance practices in other countries and considered maintenance approaches in other industries in this country. As a result of the review of maintenance practices, it was concluded that certain practices in the following areas have been found to contribute significantly to effective maintenance: (1) systems approach; (2) effectiveness monitoring; (3) technician qualifications and motivation; and (4) maintenance organization. 87 refs., 26 figs., 2 tabs.

  17. Industry

    E-Print Network [OSTI]

    Bernstein, Lenny

    2008-01-01

    specified in the ‘Energy Technology List’ during the yearenergy consumers in the chemical industry, and list examples of technology

  18. Industry

    E-Print Network [OSTI]

    Bernstein, Lenny

    2008-01-01

    disposal routes, several countries have set incen- tives to promote the use of various wastes in industrial processes in direct

  19. Essays on Merger Simulation in Industrial Organization

    E-Print Network [OSTI]

    Kim, Mee Yeon

    2012-01-01

    8: Own–and Cross–Price Elasticities Table 9: Lower CholeskyOwn–Price and Cross–Price Elasticity Table 15: AIDS model:Price and Cross–Price Elasticities Table 18: Inclusion of

  20. Industrial Heat Pumps for Steam and Fuel Savings: A BestPractices Steam Technical Brief

    SciTech Connect (OSTI)

    Not Available

    2003-06-01

    The purpose of this Steam Techcial Brief is to introduce heat-pump technology and its applicaiton in industrial processes.

  1. Industry

    E-Print Network [OSTI]

    Bernstein, Lenny

    2008-01-01

    of its electricity requirements in the USA (US DOE, 2002)USA, where motor-driven systems account for 63% of industrial electricity

  2. Industry

    E-Print Network [OSTI]

    Bernstein, Lenny

    2008-01-01

    increased use of biomass and energy efficiency improvements,Moreira, J. , 2006: Global biomass energy potential. Journal1971–2004 Notes 1) Biomass energy included 2) Industrial

  3. Industry

    E-Print Network [OSTI]

    Bernstein, Lenny

    2008-01-01

    of Industrial Electrical Switchgear and Control Gear in the6 from use in electrical switchgear and magnesium processinggas insulated electrical switchgear, during the production

  4. Certifying Industrial Energy Efficiency Performance: Aligning Management, Measurement, and Practice to Create Market Value

    E-Print Network [OSTI]

    McKane, Aimee; Scheihing, Paul; Williams, Robert

    2008-01-01

    Certifying Industrial Energy Efficiency Performance:to improve their energy efficiency- as evidenced by the 98%the renewed interest in energy efficiency worldwide and the

  5. Certifying Industrial Energy Efficiency Performance: Aligning Management, Measurement, and Practice to Create Market Value

    E-Print Network [OSTI]

    McKane, Aimee; Scheihing, Paul; Williams, Robert

    2008-01-01

    of the ISO 9000/14000 auditor certification program. Figurecertification program for the overall industrial facility that is compatible with existing management systems, including ISO

  6. Thinking Globally: How ISO 50001 - Energy Management can make industrial energy efficiency standard practice

    E-Print Network [OSTI]

    McKane, Aimee

    2010-01-01

    Comparison of National Energy Management Standards, prepared2007, Industrial Energy Management: Issues Paper, preparedMeeting: Using Energy Management Standards to stimulate

  7. Industry

    E-Print Network [OSTI]

    Bernstein, Lenny

    2008-01-01

    options for combined heat and power in Canada. Office ofpolicies to promote combined heat and power in US industry.conversions, such as combined heat and power and coke ovens,

  8. Industry

    E-Print Network [OSTI]

    Bernstein, Lenny

    2008-01-01

    iron and steel production. IEA Greenhouse Gas R&D Programme,tempera- ture range. IEA/Caddet, Sittard, The Netherlands.industry. Cheltenham, UK, IEA Greenhouse Gas R&D Programme,

  9. Industry

    E-Print Network [OSTI]

    Bernstein, Lenny

    2008-01-01

    developing countries, like India, adoption of efficient electricitydeveloping countries the sugar in- dustry uses bagasse and the edible oils industry uses byproduct wastes to generate steam and/or electricity (

  10. Advanced engineering design as practiced today from the view point of the CERN Industrial Liaison Officer

    E-Print Network [OSTI]

    Barone, Michele

    2012-01-01

    After an introduction about CERN, a brief description of the Large Hadron Collider(LHC) it is reviewed. Pros and cons of a few advanced engineering design cases are taken in consideration together with the involvement of the European Industry. The conclusion is that the LHC project has been an important driving force for Innovation in European Industry.

  11. NREL: News - Industry-backed Best Practices Guides Aim to Lower...

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

    (SAPC) working group has released new best practices guidelines for solar photovoltaic (PV) systems, with the goal of increasing investor confidence in the long-term viability of...

  12. Industry

    SciTech Connect (OSTI)

    Bernstein, Lenny; Roy, Joyashree; Delhotal, K. Casey; Harnisch, Jochen; Matsuhashi, Ryuji; Price, Lynn; Tanaka, Kanako; Worrell, Ernst; Yamba, Francis; Fengqi, Zhou; de la Rue du Can, Stephane; Gielen, Dolf; Joosen, Suzanne; Konar, Manaswita; Matysek, Anna; Miner, Reid; Okazaki, Teruo; Sanders, Johan; Sheinbaum Parado, Claudia

    2007-12-01

    This chapter addresses past, ongoing, and short (to 2010) and medium-term (to 2030) future actions that can be taken to mitigate GHG emissions from the manufacturing and process industries. Globally, and in most countries, CO{sub 2} accounts for more than 90% of CO{sub 2}-eq GHG emissions from the industrial sector (Price et al., 2006; US EPA, 2006b). These CO{sub 2} emissions arise from three sources: (1) the use of fossil fuels for energy, either directly by industry for heat and power generation or indirectly in the generation of purchased electricity and steam; (2) non-energy uses of fossil fuels in chemical processing and metal smelting; and (3) non-fossil fuel sources, for example cement and lime manufacture. Industrial processes also emit other GHGs, e.g.: (1) Nitrous oxide (N{sub 2}O) is emitted as a byproduct of adipic acid, nitric acid and caprolactam production; (2) HFC-23 is emitted as a byproduct of HCFC-22 production, a refrigerant, and also used in fluoroplastics manufacture; (3) Perfluorocarbons (PFCs) are emitted as byproducts of aluminium smelting and in semiconductor manufacture; (4) Sulphur hexafluoride (SF{sub 6}) is emitted in the manufacture, use and, decommissioning of gas insulated electrical switchgear, during the production of flat screen panels and semiconductors, from magnesium die casting and other industrial applications; (5) Methane (CH{sub 4}) is emitted as a byproduct of some chemical processes; and (6) CH{sub 4} and N{sub 2}O can be emitted by food industry waste streams. Many GHG emission mitigation options have been developed for the industrial sector. They fall into three categories: operating procedures, sector-wide technologies and process-specific technologies. A sampling of these options is discussed in Sections 7.2-7.4. The short- and medium-term potential for and cost of all classes of options are discussed in Section 7.5, barriers to the application of these options are addressed in Section 7.6 and the implication of industrial mitigation for sustainable development is discussed in Section 7.7. Section 7.8 discusses the sector's vulnerability to climate change and options for adaptation. A number of policies have been designed either to encourage voluntary GHG emission reductions from the industrial sector or to mandate such reductions. Section 7.9 describes these policies and the experience gained to date. Co-benefits of reducing GHG emissions from the industrial sector are discussed in Section 7.10. Development of new technology is key to the cost-effective control of industrial GHG emissions. Section 7.11 discusses research, development, deployment and diffusion in the industrial sector and Section 7.12, the long-term (post-2030) technologies for GHG emissions reduction from the industrial sector. Section 7.13 summarizes gaps in knowledge.

  13. Analysis and Practices of Energy Benchmarking for Industry from the Perspective of Systems Engineering

    E-Print Network [OSTI]

    Ke, Jing

    2014-01-01

    2001 ACEEE Summer Study on Energy Efficiency in Industry,GS. Issues and challenges in energy benchmarking. Energ Eng.2001;98(2):38-52. [18] ENERGY STAR. ENERGY STAR for

  14. An analysis of current supply chain best practices in the retail industry with case studies of Wal-Mart and Amazon.com

    E-Print Network [OSTI]

    Chiles, Colby Ronald

    2005-01-01

    In support of the Supply Chain 2020 Project at MIT, this thesis identifies current best practices in retail industry supply chains, with a specific focus on mass merchandising and Internet retailing. Using a survey of ...

  15. California’s Industrial Energy Efficiency Best Practices Technical Outreach and Training Program 

    E-Print Network [OSTI]

    Kazama, D. B.; Wong, T.; Wang, J.

    2007-01-01

    through decreased energy use. The Commission’s objective is to achieve 2 trillion British Thermal Units (Btu) per year in energy savings for California industry by the year 2010. These energy savings will come from implementation of projects that are a...

  16. Policy Options for Encouraging Energy Efficiency Best Practices in Shandong Province's Cement Industry

    SciTech Connect (OSTI)

    Price, Lynn; Zhou, Nan; Lu, Hongyou; Sambeek, Emiel van; Yowargana, Ping; Shuang, Liu; Kejun, Jiang

    2012-07-12

    This research intends to explore possible design options for a sectoral approach in the cement sector in Shandong Province and to consider its respective advantages and disadvantages for future application. An effort has been made in this research to gather and analyze data that will provide a transparent and robust basis for development of a Business-As-Usual (BAU) scenario, maximum technology potential scenario, and ultimately a sector crediting baseline. Surveys among cement companies and discussions with stakeholders were also conducted in order to better understand the industry and local needs related to the sectoral approach.

  17. White dwarf mergers,White dwarf mergers, thermonuclear supernovae,thermonuclear supernovae,

    E-Print Network [OSTI]

    Hinton, Jim

    White dwarf mergers,White dwarf mergers, thermonuclear supernovae,thermonuclear supernovae fusion is ignited. Degenerate, hence runaway. #12;CO white dwarf accretes, either from companion, or from disk after merger. As it approaches maximum mass, C fusion is ignited. Degenerate, hence runaway. SN Ia

  18. Mergers and Galaxy Assembly Joshua E. Barnes

    E-Print Network [OSTI]

    Barnes, Joshua Edward

    detected at sub­mm wavelengths [15,16]. These have IR spectral energy distributions similar to ultra­luminous a flat distribution of binding energies, their merger rate has declined with time as t \\Gamma5 redshifts, luminous starbursts are often triggered by mergers of gas­rich galaxies [17]. The gas

  19. Do Mergers Improve Efficiency? Evidence from Restructuring the U.S. Electric Power Sector

    E-Print Network [OSTI]

    Kwoka, John; Pollitt, Michael G.

    at the industry level. Productivity studies of mergers come to more mixed conclusions. McGuckin and Nguyen (1995), for example, examine mergers in some 28,000 food plants and conclude that ownership changes are more frequent for plants with high labor... the number of observations in the final sample. First, a number of the utilities on the list are essentially generators and not appropriately part of this sample. Second, non-responses and unresolvable inconsistencies in the data result in the loss...

  20. Methodological and Practical Considerations for Developing Multiproject Baselines for Electric Power and Cement Industry Projects in Central America

    E-Print Network [OSTI]

    Murtishaw, Scott; Sathaye, Jayant; Galitsky, Christina; Dorion, Kristel

    2008-01-01

    in: Innovations in Portland Cement Manufacturing, Skokie,IL, Portland Cement Association. Worrell, E. , Price, L. ,emissions from the global cement industry’, Ann. Rev. Energy

  1. Galaxy Mergers and Dark Matter Halo Mergers in LCDM: Mass, Redshift, and Mass-Ratio Dependence

    SciTech Connect (OSTI)

    Stewart, Kyle R.; Bullock, James S.; Barton, Elizabeth J.; Wechsler, Risa H.; /KIPAC, Menlo Park /SLAC

    2009-08-03

    We employ a high-resolution LCDM N-body simulation to present merger rate predictions for dark matter halos and investigate how common merger-related observables for galaxies - such as close pair counts, starburst counts, and the morphologically disturbed fraction - likely scale with luminosity, stellar mass, merger mass ratio, and redshift from z = 0 to z = 4. We provide a simple 'universal' fitting formula that describes our derived merger rates for dark matter halos a function of dark halo mass, merger mass ratio, and redshift, and go on to predict galaxy merger rates using number density-matching to associate halos with galaxies. For example, we find that the instantaneous merger rate of m/M > 0.3 mass ratio events into typical L {approx}> fL{sub *} galaxies follows the simple relation dN/dt {approx_equal} 0.03(1+f)Gyr{sup -1} (1+z){sup 2.1}. Despite the rapid increase in merger rate with redshift, only a small fraction of > 0.4L{sub *} high-redshift galaxies ({approx} 3% at z = 2) should have experienced a major merger (m/M > 0.3) in the very recent past (t < 100 Myr). This suggests that short-lived, merger-induced bursts of star formation should not contribute significantly to the global star formation rate at early times, in agreement with observational indications. In contrast, a fairly high fraction ({approx} 20%) of those z = 2 galaxies should have experienced a morphologically transformative merger within a virial dynamical time. We compare our results to observational merger rate estimates from both morphological indicators and pair-fraction based determinations between z = 0-2 and show that they are consistent with our predictions. However, we emphasize that great care must be made in these comparisons because the predicted observables depend very sensitively on galaxy luminosity, redshift, overall mass ratio, and uncertain relaxation timescales for merger remnants. We show that the majority of bright galaxies at z = 3 should have undergone a major merger (> 0.3) in the last 700 Myr and conclude that mergers almost certainly play an important role in delivering baryons and influencing the kinematic properties of Lyman Break Galaxies (LBGs).

  2. Review: Memory Practices in the Sciences by Geoffrey C. Bowker

    E-Print Network [OSTI]

    Nguyen, Lilly

    2008-01-01

    rooted in the industrial revolution. Watches encouraged aCoupled with the industrial revolution, geological practice

  3. V1309 Sco—understanding a merger

    SciTech Connect (OSTI)

    Nandez, J. L. A.; Ivanova, N. [Department of Physics, University of Alberta, Edmonton, AB, T6G 2E7 (Canada); Lombardi, J. C. Jr., E-mail: avendaon@ualberta.ca [Department of Physics, Allegheny College, Meadville, PA 16335 (United States)

    2014-05-01

    One of the two outcomes of a common envelope (CE) event is a merger of the two stars. To date, the best known case of a binary merger is the V1309 Sco outburst, where the orbital period was known and observed to decay up to the outburst. Using the hydrodynamical code StarSmasher, we study in detail which characteristics of the progenitor binary affect the outburst and produce the best match with observations. We have developed a set of tools in order to quantify any CE event. We consider binaries consisting of a 1.52 M {sub ?} giant and a 0.16 M {sub ?} companion with P {sub orb} ? 1.4 days, varying the nature of the companion and its synchronization. We show that all considered progenitor binaries evolve toward the merger primarily because of Darwin instability. The merger is accompanied by mass ejection that proceeds in several separate mass outbursts and takes away a few percent of the donor mass. This very small mass, nonetheless, is important as it is not only sufficient to explain the observed light curve, but it also carries away up to one-third of both the initial total angular momentum and initial orbital energy. We find that all synchronized systems experience L {sub 2} mass loss that operates during just a few days prior to the merger and produces ring-shaped ejecta. The formed star is always a strongly heated radiative star that differentially rotates. We conclude that the case of a synchronized binary with a main-sequence companion gives the best match with observations of V1309 Sco.

  4. Methodological and Practical Considerations for DevelopingMultiproject Baselines for Electric Power and Cement Industry Projects inCentral America

    SciTech Connect (OSTI)

    Murtishaw, Scott; Sathaye, Jayant; Galitsky, Christina; Dorion,Kristel

    2004-09-02

    The Lawrence Berkeley National Laboratory (Berkeley Lab) andthe Center for Sustainable Development in the Americas (CSDA) conductedtechnical studies and organized two training workshops to developcapacity in Central America for the evaluation of climate changeprojects. This paper describes the results of two baseline case studiesconducted for these workshops, one for the power sector and one for thecement industry, that were devised to illustrate certain approaches tobaseline setting. Multiproject baseline emission rates (BERs) for themain Guatemalan electricity grid were calculated from 2001 data. Inrecent years, the Guatemalan power sector has experienced rapid growth;thus, a sufficient number of new plants have been built to estimateviable BERs. We found that BERs for baseload plants offsetting additionalbaseload capacity ranged from 0.702 kgCO2/kWh (using a weighted averagestringency) to 0.507 kgCO2/kWh (using a 10th percentile stringency),while the baseline for plants offsetting load-followingcapacity is lowerat 0.567 kgCO2/kWh. For power displaced from existing load-followingplants, the rate is higher, 0.735 kgCO2/kWh, as a result of the age ofsome plants used for meeting peak loads and the infrequency of their use.The approved consolidated methodology for the Clean Development Mechanismyields a single rate of 0.753 kgCO2/kWh. Due to the relatively smallnumber of cement plants in the region and the regional nature of thecement market, all of Central America was chosen as the geographicboundary for setting cement industry BERs. Unfortunately, actualoperations and output data were unobtainable for most of the plants inthe region, and many data were estimated. Cement industry BERs rangedfrom 205 kgCO2 to 225 kgCO2 per metric ton of cement.

  5. DYNAMICAL MODELING OF GALAXY MERGERS USING IDENTIKIT

    SciTech Connect (OSTI)

    Privon, G. C.; Evans, A. S.; Barnes, J. E.; Hibbard, J. E.; Yun, M. S.; Mazzarella, J. M.; Armus, L.; Surace, J.

    2013-07-10

    We present dynamical models of four interacting systems: NGC 5257/8, The Mice, the Antennae, and NGC 2623. The parameter space of the encounters are constrained using the Identikit model-matching and visualization tool. Identikit utilizes hybrid N-body and test particle simulations to enable rapid exploration of the parameter space of galaxy mergers. The Identikit-derived matches of these systems are reproduced with self-consistent collisionless simulations which show very similar results. The models generally reproduce the observed morphology and H I kinematics of the tidal tails in these systems with reasonable properties inferred for the progenitor galaxies. The models presented here are the first to appear in the literature for NGC 5257/8 and NGC 2623, and The Mice and the Antennae are compared with previously published models. Based on the assumed mass model and our derived initial conditions, the models indicate that the four systems are currently being viewed 175-260 Myr after first passage and cover a wide range of merger stages. In some instances there are mismatches between the models and the data (e.g., in the length of a tail); these are likely due to our adoption of a single mass model for all galaxies. Despite the use of a single mass model, these results demonstrate the utility of Identikit in constraining the parameter space for galaxy mergers when applied to real data.

  6. Thermonuclear detonations ensuing white dwarf mergers

    E-Print Network [OSTI]

    Dan, Marius; Brüggen, Marcus; Ramirez-Ruiz, Enrico; Rosswog, Stephan

    2015-01-01

    The merger of two white dwarfs (WDs) has for many years not been considered as the favoured model for the progenitor system of type Ia supernovae (SNe Ia). But recent years have seen a change of opinion as a number of studies, both observational and theoretical, have concluded that they should contribute significantly to the observed type Ia supernova rate. In this paper, we study the ignition and propagation of detonation through post-merger remnants and we follow the resulting nucleosynthesis up to the point where a homologous expansion is reached. In our study we cover the entire range of WD masses and compositions. For the emergence of a detonation we study several setups, guided by both merger remnants from our own simulations and by results taken from the literature. We carefully compare the nucleosynthetic yields of successful explosions with SN Ia observations. Only three of our models are consistent with all the imposed constraints and potentially lead to a standard type Ia event. The first one, a $0...

  7. Merger Signatures in the Dynamics of Star-forming Gas

    E-Print Network [OSTI]

    Hung, Chao-Ling; Smith, Howard A; Ashby, Matthew L N; Lanz, Lauranne; Martínez-Galarza, Juan R; Sanders, D B; Zezas, Andreas

    2015-01-01

    Spatially resolved kinematics have been used to determine the dynamical status of star-forming galaxies with ambiguous morphologies, and constrain the importance of galaxy interactions during the assembly of galaxies. However, measuring the importance of interactions or galaxy merger rates requires knowledge of the systematics in kinematic diagnostics and the visible time with merger indicators. We analyze the dynamics of star-forming gas in a set of binary merger hydrodynamic simulations with stellar mass ratios of 1:1 and 1:4. We find that the evolution of kinematic asymmetries traced by star-forming gas mirrors morphological asymmetries derived from mock optical images, in which both merger indicators show the largest deviation from isolated disks during strong interaction phases. Based on a series of simulations with various initial disk orientations, orbital parameters, gas fractions, and mass ratios, we find that the merger signatures are visible for ~0.2-0.4 Gyr with kinematic merger indicators but can...

  8. Electricity Merger Policy in the Shadow of Regulation

    E-Print Network [OSTI]

    Gilbert, Richard J; Newberry, David M

    2006-01-01

    merger. The form of the Emissions Trading System amplifiesvertical integration, emissions trading JEL classification:under the European Emissions Trading System in January 2005,

  9. Formation of S0 galaxies through mergers. V. Antitruncated stellar discs resulting from major mergers

    E-Print Network [OSTI]

    Borlaff, Alejandro; Rodríguez-Pérez, Cristina; Querejeta, Miguel; Tapia, Trinidad; Pérez-González, Pablo G; Zamorano, Jaime; Gallego, Jesús; Beckman, John

    2014-01-01

    Lenticular galaxies (S0s) are more likely to host antitruncated (Type-III) stellar discs than galaxies of later Hubble types. Major mergers are popularly considered too violent mechanisms to form these breaks. We have investigated whether major mergers can result into S0-like remnants with realistic antitruncated stellar discs or not. We have analysed 67 relaxed S0 and E/S0 remnants resulting from dissipative N-body simulations of major mergers from the GalMer database. We have simulated realistic R-band surface brightness profiles of the remnants to identify those with antitruncated stellar discs. Their inner and outer discs and the breaks are quantitatively characterized to compare with real data. Nearly 70% of our S0-like remnants are antitruncated, meaning that major mergers that result in S0s have a high probability of producing Type-III stellar discs. Our remnants lie on top of the extrapolations of the observational trends (towards brighter magnitudes and higher break radii) in several photometric diag...

  10. Mergers and star formation in SPH cosmological simulations

    E-Print Network [OSTI]

    Patricia B. Tissera

    1999-11-02

    The star formation rate history of galactic objects in hydrodynamical cosmological simulations are analyzed in relation to their merger histories. The findings suggest that massive mergers produce more efficient starbursts and that, depending on the internal structure of the objects, double starbursts could also occur.

  11. Mergers in the GB Electricity Market: effects on Retail Charges

    E-Print Network [OSTI]

    Paris-Sud XI, Université de

    Mergers in the GB Electricity Market: effects on Retail Charges N° 2006-08 Mai 2006 Evens SALIES OFCE hal-00972962,version1-3Apr2014 #12;Mergers in the GB Electricity Market: effects on Retail Charges-efficiency as variables relating to price and profitability. The retail electricity market is a case in point, as high

  12. Energy-Efficiency Improvement Opportunities for the Textile Industry

    E-Print Network [OSTI]

    Hasanbeigi, Ali

    2010-01-01

    temperature (and thus the best energy-efficiency) and lowBest practices/case studies - Indian Industries, Energy-Best practices/case studies - Indian Industries, Energy-

  13. Mergers and obliquities in stellar triples

    SciTech Connect (OSTI)

    Naoz, Smadar; Fabrycky, Daniel C.

    2014-10-01

    Many close stellar binaries are accompanied by a faraway star. The 'eccentric Kozai-Lidov' (EKL) mechanism can cause dramatic inclination and eccentricity fluctuations, resulting in tidal tightening of inner binaries of triple stars. We run a large set of Monte Carlo simulations, including the secular evolution of the orbits, general relativistic precession, and tides, and we determine the semimajor axis, eccentricity, inclination, and spin-orbit angle distributions of the final configurations. We find that the efficiency of forming tight binaries (? 16 days) when taking the EKL mechanism into account is ?21%, and about 4% of all simulated systems ended up in a merger event. These merger events can lead to the formation of blue stragglers. Furthermore, we find that the spin-orbit angle distribution of the inner binaries carries a signature of the initial setup of the system; thus, observations can be used to disentangle close binaries' birth configuration. The resulting inner and outer final orbits' period distributions and their estimated fraction suggest that secular dynamics may be a significant channel for the formation of close binaries in triples and even blue stragglers.

  14. International Best Practices for Pre-Processing and Co-Processing Municipal Solid Waste and Sewage Sludge in the Cement Industry

    E-Print Network [OSTI]

    Hasanbeigi, Ali

    2013-01-01

    industrial ecology projects (Hotta and Aoki-Suzuki 2010; Nakamura Japan’s Waste Managementand waste management measures), and comprehensive plant performance requirements (EC, 2011b). While requiring that industrial

  15. Evolution of the galaxy merger rate in model universes

    E-Print Network [OSTI]

    Abilio Mateus

    2008-02-20

    We investigate the evolution of the galaxy merger rate predicted by two semi-analytical galaxy formation models implemented on the Millennium Simulation of dark matter structure growth. The fraction of merging galaxy pairs at each time-step of the simulation is derived from the galaxy catalogues obtained by the models and the results are compared with various observational estimates of merger fractions taken from the literature. We find a good match between the pair fractions derived from the simulation and the observed counting of galaxy pairs obtained by different sources in the redshift range 0 evolution of the number of galaxy mergers per Gyr grows with redshift as an exponential rate proportional to (1+z)^m, with m ranging from 0.6 to 0.8 for 0 evolution in the fraction of galaxy mergers since z ~ 1.2. The weak evolution predicted for the galaxy merger rate in an hierarchical model universe shows that the mass assembly evolution of galaxies through mergers does not follow the rapid evolution of the halo merger rate obtained in previous studies.

  16. Reconstructing the Merger History of the A3266 Galaxy Cluster

    E-Print Network [OSTI]

    Mark Henriksen; R. Hank Donnelly; David S. Davis

    1999-09-14

    A temperature map of the A3266 galaxy cluster has been derived from the ASCA GIS observations. It shows an asymmetric pattern of heating indicative of an ongoing merger between a group sized sub-cluster and the main cluster. The galaxy distribution shows two peaks connected in a barlike structure running NE to SW through the central region of the main cluster, defining the merger axis. The temperature of the intergalactic medium generally decreases from SW to NE along the merger axis with a peak of 13.2 +3.4/-2.0 keV in a region which is perpendicular to the merger axis and extends through the main cluster density peak. The central bar has a velocity dispersion of ~1300 km/s, compared to \\~1000 km/s for the surrounding cluster. The central bar also has two distinct density peaks in the distribution of galaxies, yet it has a velocity distribution which is consistent with a single Gaussian. This implies a merger in the plane of the sky. The optical and X-ray data taken together show that a loose group of about ~30 galaxies has penetrated the main cluster from the SW, decoupling from their original intergroup medium and passing through a strong shock front. Two radio galaxies, one a wide angle tail morphology (WAT) and the other a narrow angle tail (NAT), are located to the SW of the main cluster in the post-shock gas. Since the merger is in the plane of the sky, a dynamical analysis cannot be applied to derive the velocity of the merger. Alternatively, using the pre- and post-shock gastemperature and assuming an adiabatic shock, we calculate a relative gas velocity of ~1400 km/s. The alignment of the NAT and WAT relative to the shock front combined with the high gas velocity from the merger implies that the observed radio morphologies formed via ram-pressure as a result of the merger.

  17. Energy Efficiency Improvement and Cost Saving Opportunities for the Glass Industry. An ENERGY STAR Guide for Energy and Plant Managers

    E-Print Network [OSTI]

    Worrell, Ernst

    2008-01-01

    Manufacturing Industries. Good Practice Guide 131. Unitedand their Controls. Good Practice Guide 252. United Kingdom.

  18. The Phonology of Incomplete Tone Merger in Dalian

    E-Print Network [OSTI]

    Liu, Te-hsin

    2009-01-01

    Tone Merger in Dalian 1 Te-hsin Liu liu.tehsin@berkeley.eduwith a special focus on Dalian, which is a less well-knownand 53 (henceforth Old Dalian). Our first-hand data obtained

  19. International Best Practices for Pre-Processing and Co-Processing Municipal Solid Waste and Sewage Sludge in the Cement Industry

    E-Print Network [OSTI]

    Hasanbeigi, Ali

    2013-01-01

    2007. “Alternative Fuels & Raw Materials in Halyps cement. ”Fuels & Alternative Raw Materials in the Cement Industry.Alternative Fuels and Raw Materials in the European Cement

  20. Short Gamma-Ray Bursts from Binary Neutron Star Mergers

    E-Print Network [OSTI]

    Roland Oechslin; Thomas Janka

    2006-04-27

    We present the results from new relativistic hydrodynamic simulations of binary neutron star mergers using realistic non-zero temperature equations of state. We vary several unknown parameters in the system such as the neutron star (NS) masses, their spins and the nuclear equation of state. The results are then investigated with special focus on the post-merger torus-remnant system. Observational implications on the Gamma-ray burst (GRB) energetics are discussed and compared with recent observations.

  1. Texas Industries of the Future 

    E-Print Network [OSTI]

    Ferland, K.

    2002-01-01

    The purpose of the Texas Industries of the Future program is to facilitate the development, demonstration and adoption of advanced technologies and adoption of best practices that reduce industrial energy usage, emissions, and associated costs...

  2. RAIL ROUTING PRACTICES AND PROPOSED ALTERNATIVES

    Office of Environmental Management (EM)

    SECTION II It is a good idea to include a discussion of specific regulations, industry practices, and DOE's Radioactive Materials Transportation Practices. The paper...

  3. Establishing and Maintaining Effective Energy Management Practices 

    E-Print Network [OSTI]

    Giffin, T. M.

    2008-01-01

    SAIC has developed, and has delivered over the past 4 years, training and tools to industry for them to implement energy management practices. Practical Energy Management (PEM) has been delivered to over 1000 industry professionals, arming them...

  4. The Role of Patent Rights in Mergers: Consolidation in Plant Biotechnology

    E-Print Network [OSTI]

    Marco, Alan C.; Rausser, Gordon C.

    2007-01-01

    Choi, J. P. (1998): “Patent litigation as an informational-Year 2007 Paper 1036 The Role of Patent Rights in Mergers:© 2007 by author(s). The Role of Patent Rights in Mergers:

  5. The rhetoric of the NEA/AFT merger: managing conflicting conceptualizations of identity and democracy 

    E-Print Network [OSTI]

    Burkett, Amber Leigh

    1999-01-01

    of these two teachers' unions, and the influence they had on the merger. A close textual analysis was performed on the speeches and web documents regarding the merger as well as debates pertaining to unity of the two unions....

  6. General Relativistic Binary Merger Simulations and Short Gamma Ray Bursts

    E-Print Network [OSTI]

    Joshua A. Faber; Thomas W. Baumgarte; Stuart L. Shapiro; Keisuke Taniguchi

    2006-03-10

    The recent localization of some short-hard gamma ray bursts (GRBs) in galaxies with low star formation rates has lent support to the suggestion that these events result from compact object binary mergers. We discuss how new simulations in general relativity are helping to identify the central engine of short-hard GRBs. Motivated by our latest relativistic black hole-neutron star merger calculations, we discuss a scenario in which these events may trigger short-hard GRBs, and compare this model to competing relativistic models involving binary neutron star mergers and the delayed collapse of hypermassive neutron stars. Distinguishing features of these models may help guide future GRB and gravitational wave observations to identify the nature of the sources.

  7. Globular Clusters in Elliptical Galaxies: Constraints on Mergers

    E-Print Network [OSTI]

    Duncan Forbes

    1997-11-14

    Understanding the formation of globular clusters will help us to constrain the evolutionary history of galaxies. For mergers on-going today, it appears that the number of newly created proto-globulars varies with the progenitor types and that the percentage increase in the total cluster population is 100% or less. Elliptical galaxies, which are generally thought to be the end-result of such mergers, often show evidence for two populations of globular clusters. This has been taken as support for the merger picture but we show that there are several problems when examined in detail. Strong evidence for an elliptical galaxy with a single population of globular clusters is also presented. Implications for galaxy formation are briefly mentioned.

  8. RADIATIVE TRANSFER SIMULATIONS OF NEUTRON STAR MERGER EJECTA

    SciTech Connect (OSTI)

    Tanaka, Masaomi [National Astronomical Observatory of Japan, Mitaka, Tokyo (Japan); Hotokezaka, Kenta, E-mail: masaomi.tanaka@nao.ac.jp, E-mail: hotoke@tap.scphys.kyoto-u.ac.jp [Department of Physics, Kyoto University, Kyoto (Japan)

    2013-10-01

    Mergers of binary neutron stars (NSs) are among the most promising gravitational wave (GW) sources. Next generation GW detectors are expected to detect signals from NS mergers within about 200 Mpc. The detection of electromagnetic wave (EM) counterparts is crucial to understanding the nature of GW sources. Among the possible EM emission from the NS merger, emission powered by radioactive r-process nuclei is one of the best targets for follow-up observations. However, predictions so far have not taken into account detailed r-process element abundances in the ejecta. We perform for the first time radiative transfer simulations of the NS merger ejecta including all the r-process elements from Ga to U. We show that the opacity of the NS merger ejecta is about ? = 10 cm{sup 2} g{sup –1}, which is higher than that of Fe-rich Type Ia supernova ejecta by a factor of ?100. As a result, the emission is fainter and lasts longer than previously expected. The spectra are almost featureless due to the high expansion velocity and bound-bound transitions of many different r-process elements. We demonstrate that the emission is brighter for a higher mass ratio of the two NSs and a softer equation of state adopted in the merger simulations. Because of the red color of the emission, follow-up observations in red optical and near-infrared (NIR) wavelengths will be the most efficient. At 200 Mpc, the expected brightness of the emission is i = 22-25 AB mag, z = 21-23 AB mag, and 21-24 AB mag in the NIR JHK bands. Thus, observations with wide-field 4 m- and 8 m-class optical telescopes and wide-field NIR space telescopes are necessary. We also argue that the emission powered by radioactive energy can be detected in the afterglow of nearby short gamma-ray bursts.

  9. BRIGHT 'MERGER-NOVA' FROM THE REMNANT OF A NEUTRON STAR BINARY MERGER: A SIGNATURE OF A NEWLY BORN, MASSIVE, MILLISECOND MAGNETAR

    SciTech Connect (OSTI)

    Yu, Yun-Wei [Institute of Astrophysics, Central China Normal University, Wuhan 430079 (China)] [Institute of Astrophysics, Central China Normal University, Wuhan 430079 (China); Zhang, Bing; Gao, He, E-mail: yuyw@mail.ccnu.edu.cn, E-mail: zhang@physics.unlv.edu [Department of Physics and Astronomy, University of Nevada, Las Vegas, NV 89154 (United States)] [Department of Physics and Astronomy, University of Nevada, Las Vegas, NV 89154 (United States)

    2013-10-20

    A massive millisecond magnetar may survive the merger of a neutron star (NS) binary, which would continuously power the merger ejecta. We develop a generic dynamic model for the merger ejecta with energy injection from the central magnetar. The ejecta emission (the {sup m}erger-nova{sup )} powered by the magnetar peaks in the UV band and the peak of the light curve, progressively shifts to an earlier epoch with increasing frequency. A magnetar-powered merger-nova could have an optical peak brightness comparable to a supernova, which is a few tens or hundreds times brighter than the radioactive-powered merger-novae (the so-called macro-nova or kilo-nova). On the other hand, such a merger-nova would peak earlier and have a significantly shorter duration than that of a supernova. An early collapse of the magnetar could suppress the brightness of the optical emission and shorten its duration. Such millisecond-magnetar-powered merger-novae may be detected from NS-NS merger events without an observed short gamma-ray burst, and could be a bright electromagnetic counterpart for gravitational wave bursts due to NS-NS mergers. If detected, it suggests that the merger leaves behind a massive NS, which has important implications for the equation-of-state of nuclear matter.

  10. REPRODUCING THE OBSERVED ABUNDANCES IN RCB AND HdC STARS WITH POST-DOUBLE-DEGENERATE MERGER MODELS-CONSTRAINTS ON MERGER AND POST-MERGER SIMULATIONS AND PHYSICS PROCESSES

    SciTech Connect (OSTI)

    Menon, Athira; Herwig, Falk; Denissenkov, Pavel A. [Department of Physics and Astronomy, University of Victoria, Victoria, BC V8P5C2 (Canada); Clayton, Geoffrey C.; Staff, Jan [Department of Physics and Astronomy, Louisiana State University, 202 Nicholson Hall, Tower Dr., Baton Rouge, LA 70803-4001 (United States); Pignatari, Marco [Department of Physics, University of Basel, Klingelbergstrasse 82, CH-4056 Basel (Switzerland); Paxton, Bill [Kavli Institute for Theoretical Physics and Department of Physics, Kohn Hall, University of California, Santa Barbara, CA 93106 (United States)

    2013-07-20

    The R Coronae Borealis (RCB) stars are hydrogen-deficient, variable stars that are most likely the result of He-CO WD mergers. They display extremely low oxygen isotopic ratios, {sup 16}O/{sup 18}O {approx_equal} 1-10, {sup 12}C/{sup 13}C {>=} 100, and enhancements up to 2.6 dex in F and in s-process elements from Zn to La, compared to solar. These abundances provide stringent constraints on the physical processes during and after the double-degenerate merger. As shown previously, O-isotopic ratios observed in RCB stars cannot result from the dynamic double-degenerate merger phase, and we now investigate the role of the long-term one-dimensional spherical post-merger evolution and nucleosynthesis based on realistic hydrodynamic merger progenitor models. We adopt a model for extra envelope mixing to represent processes driven by rotation originating in the dynamical merger. Comprehensive nucleosynthesis post-processing simulations for these stellar evolution models reproduce, for the first time, the full range of the observed abundances for almost all the elements measured in RCB stars: {sup 16}O/{sup 18}O ratios between 9 and 15, C-isotopic ratios above 100, and {approx}1.4-2.35 dex F enhancements, along with enrichments in s-process elements. The nucleosynthesis processes in our models constrain the length and temperature in the dynamic merger shell-of-fire feature as well as the envelope mixing in the post-merger phase. s-process elements originate either in the shell-of-fire merger feature or during the post-merger evolution, but the contribution from the asymptotic giant branch progenitors is negligible. The post-merger envelope mixing must eventually cease {approx}10{sup 6} yr after the dynamic merger phase before the star enters the RCB phase.

  11. Innovation and the big builders : barriers to integrating sustainable design and construction practices into the production homebuilding industry : the case of Pulte Homes

    E-Print Network [OSTI]

    Pauly, Justin T. (Justin Talbott)

    2005-01-01

    The homebuilding industry has held a dominant presence in the U.S. economy over the past century. It has been a source of profit, shelter and jobs for countless Americans. In order to meet the needs of an ever-burgeoning ...

  12. Compressed Air System Modifications Improve Efficiency at a Plastics Blow Molding Plant (Southeastern Container Plant): Office of Industrial Technologies (OIT) BestPractices Technical Case Study

    SciTech Connect (OSTI)

    Wogsland, J.

    2001-06-18

    This case study is one in a series on industrial firms who are implementing energy efficient technologies and system improvements into their manufacturing processes. This case study documents the activities, savings, and lessons learned on the plastics blow molding plant project.

  13. International Best Practices for Pre-Processing and Co-Processing Municipal Solid Waste and Sewage Sludge in the Cement Industry

    SciTech Connect (OSTI)

    Hasanbeigi, Ali; Lu, Hongyou; Williams, Christopher; Price, Lynn

    2012-07-01

    The purpose of this report is to describe international best practices for pre-processing and coprocessing of MSW and sewage sludge in cement plants, for the benefit of countries that wish to develop co-processing capacity. The report is divided into three main sections. Section 2 describes the fundamentals of co-processing, Section 3 describes exemplary international regulatory and institutional frameworks for co-processing, and Section 4 describes international best practices related to the technological aspects of co-processing.

  14. Industrial Permit

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

    Industrial Permit Industrial Permit The Industrial Permit authorizes the Laboratory to discharge point-source effluents under the National Pollutant Discharge Elimination System....

  15. Merger vs. Accretion and the Structure of Dark Matter Halos

    E-Print Network [OSTI]

    E. Salvador-Sole; A. Manrique; J. M. Solanes

    1997-12-05

    High-resolution N-body simulations of hierarchical clustering in a wide variety of cosmogonies show that the density profiles of dark matter halos are universal, with low mass halos being denser than their more massive counterparts. This mass-density correlation is interpreted as reflecting the earlier typical formation time of less massive objects. We investigate this hypothesis in the light of formation times defined as the epoch at which halos experience their last major merger. Such halo formation times are calculated by means of a modification of the extended Press & Schechter formalism which includes a phenomenological frontier, Delta_m, between tiny and notable relative mass captures leading to the distinction between merger and accretion. For Delta_m=0.6, we confirm that the characteristic density of halos is essentially proportional to the mean density of the universe at their time of formation. Yet, proportionality with respect to the critical density yields slightly better results for open universes. In addition, we find that the scale radius of halos is also essentially proportional to their virial radius at the time of formation. We show that these two relations are consistent with the following simple scenario. Violent relaxation caused by mergers rearranges the structure of halos leading to the same density profile with universal values of the dimensionless characteristic density and scale radius. Between mergers, halos grow gradually through the accretion of surrounding layers by keeping their central parts steady and expanding their virial radius as the critical density of the universe diminishes.

  16. Gamma-Ray Bursts from Neutron Star Mergers

    E-Print Network [OSTI]

    T. Piran

    1994-01-17

    Binary neutron stars merger (NS$^2$M) at cosmological distances is probably the only $\\gamma$-ray bursts model based on an independently observed phenomenon which is known to be taking place at a comparable rate. We describe this model, its predictions and some open questions.

  17. Reasons for bank mergers in Europe since 1985 

    E-Print Network [OSTI]

    Lausberg, Carsten

    1993-01-01

    This thesis deals with mergers and acquisitions that were undertaken by the largest European banks between 1985 and 1992. On the basis of an empirical survey among executives from 61 banks and a survey of financial news sources, the study finds...

  18. Hybrid method for understanding black-hole mergers: Inspiralling case

    E-Print Network [OSTI]

    David A. Nichols; Yanbei Chen

    2012-02-21

    We adapt a method of matching post-Newtonian and black-hole-perturbation theories on a timelike surface (which proved useful for understanding head-on black-hole-binary collisions) to treat equal-mass, inspiralling black-hole binaries. We first introduce a radiation-reaction potential into this method, and we show that it leads to a self-consistent set of equations that describe the simultaneous evolution of the waveform and of the timelike matching surface. This allows us to produce a full inspiral-merger-ringdown waveform of the l=2, m=2,-2 modes of the gravitational waveform of an equal-mass black-hole-binary inspiral. These modes match those of numerical-relativity simulations well in phase, though less well in amplitude for the inspiral. As a second application of this method, we study a merger of black holes with spins antialigned in the orbital plane (the "superkick" configuration). During the ringdown of the superkick, the phases of the mass- and current-quadrupole radiation become locked together, because they evolve at the same quasinormal mode frequencies. We argue that this locking begins during merger, and we show that if the spins of the black holes evolve via geodetic precession in the perturbed black-hole spacetime of our model, then the spins precess at the orbital frequency during merger. In turn, this gives rise to the correct behavior of the radiation, and produces a kick similar to that observed in numerical simulations.

  19. The Fate of the Compact Remnant in Neutron Star Mergers

    E-Print Network [OSTI]

    Chris L. Fryer; Krzysztoff Belczynski; Enrico Ramirez-Ruiz; Stephan Rosswog; Gang Shen; Andrew W. Steiner

    2015-04-28

    Neutron star (binary neutron star and neutron star - black hole) mergers are believed to produce short-duration gamma-ray bursts. They are also believed to be the dominant source of gravitational waves to be detected by the advanced LIGO and the dominant source of the heavy r-process elements in the universe. Whether or not these mergers produce short-duration GRBs depends sensitively on the fate of the core of the remnant (whether, and how quickly, it forms a black hole). In this paper, we combine the results of merger calculations and equation of state studies to determine the fate of the cores of neutron star mergers. Using population studies, we can determine the distribution of these fates to compare to observations. We find that black hole cores form quickly only for equations of state that predict maximum non-rotating neutron star masses below 2.3-2.4 solar masses. If quick black hole formation is essential in producing gamma-ray bursts, LIGO observed rates compared to GRB rates could be used to constrain the equation of state for dense nuclear matter.

  20. The Fate of the Compact Remnant in Neutron Star Mergers

    E-Print Network [OSTI]

    Fryer, Chris L; Ramirez-Ruiz, Enrico; Rosswog, Stephan; Shen, Gang; Steiner, Andrew W

    2015-01-01

    Neutron star (binary neutron star and neutron star - black hole) mergers are believed to produce short-duration gamma-ray bursts. They are also believed to be the dominant source of gravitational waves to be detected by the advanced LIGO and the dominant source of the heavy r-process elements in the universe. Whether or not these mergers produce short-duration GRBs depends sensitively on the fate of the core of the remnant (whether, and how quickly, it forms a black hole). In this paper, we combine the results of merger calculations and equation of state studies to determine the fate of the cores of neutron star mergers. Using population studies, we can determine the distribution of these fates to compare to observations. We find that black hole cores form quickly only for equations of state that predict maximum non-rotating neutron star masses below 2.3-2.4 solar masses. If quick black hole formation is essential in producing gamma-ray bursts, LIGO observed rates compared to GRB rates could be used to constr...

  1. FORMATION OF STABLE MAGNETARS FROM BINARY NEUTRON STAR MERGERS

    SciTech Connect (OSTI)

    Giacomazzo, Bruno [JILA, University of Colorado and National Institute of Standards and Technology, Boulder, CO 80309 (United States); Perna, Rosalba [JILA and Department of Astrophysical and Planetary Sciences, University of Colorado, Boulder, CO 80309 (United States)

    2013-07-10

    By performing fully general relativistic magnetohydrodynamic simulations of binary neutron star mergers, we investigate the possibility that the end result of the merger is a stable magnetar. In particular, we show that, for a binary composed of two equal-mass neutron stars (NSs) of gravitational mass M {approx} 1.2 M{sub Sun} and equation of state similar to Shen et al. at high densities, the merger product is a stable NS. Such NS is found to be differentially rotating and ultraspinning with spin parameter J/M{sup 2} {approx} 0.86, where J is its total angular momentum, and it is surrounded by a disk of Almost-Equal-To 0.1 M{sub Sun }. While in our global simulations the magnetic field is amplified by about two orders of magnitude, local simulations have shown that hydrodynamic instabilities and the onset of the magnetorotational instability could further increase the magnetic field strength up to magnetar levels. This leads to the interesting possibility that, for some NS mergers, a stable and magnetized NS surrounded by an accretion disk could be formed. We discuss the impact of these new results for the emission of electromagnetic counterparts of gravitational wave signals and for the central engine of short gamma-ray bursts.

  2. Magnetically-induced outflows from binary neutron star merger remnants

    E-Print Network [OSTI]

    Daniel M. Siegel; Riccardo Ciolfi

    2015-05-06

    Recent observations by the Swift satellite have revealed long-lasting ($\\sim 10^2-10^5\\,\\mathrm{s}$), "plateau-like" X-ray afterglows in the vast majority of short gamma-ray bursts events. This has put forward the idea of a long-lived millisecond magnetar central engine being generated in a binary neutron star (BNS) merger and being responsible for the sustained energy injection over these timescales ("magnetar model"). We elaborate here on recent simulations that investigate the early evolution of such a merger remnant in general-relativistic magnetohydrodynamics. These simulations reveal very different conditions than those usually assumed for dipole spin-down emission in the magnetar model. In particular, the surrounding of the newly formed NS is polluted by baryons due to a dense, highly magnetized and isotropic wind from the stellar surface that is induced by magnetic field amplification in the interior of the star. The timescales and luminosities of this wind are compatible with early X-ray afterglows, such as the "extended emission". These isotropic winds are a generic feature of BNS merger remnants and thus represent an attractive alternative to current models of early X-ray afterglows. Further implications to BNS mergers and short gamma-ray bursts are discussed.

  3. Satellite dwarf galaxies in a hierarchical universe: the prevalence of dwarf-dwarf major mergers

    SciTech Connect (OSTI)

    Deason, Alis; Wetzel, Andrew; Garrison-Kimmel, Shea

    2014-10-20

    Mergers are a common phenomenon in hierarchical structure formation, especially for massive galaxies and clusters, but their importance for dwarf galaxies in the Local Group remains poorly understood. We investigate the frequency of major mergers between dwarf galaxies in the Local Group using the ELVIS suite of cosmological zoom-in dissipationless simulations of Milky Way- and M31-like host halos. We find that ?10% of satellite dwarf galaxies with M {sub star} > 10{sup 6} M {sub ?} that are within the host virial radius experienced a major merger of stellar mass ratio closer than 0.1 since z = 1, with a lower fraction for lower mass dwarf galaxies. Recent merger remnants are biased toward larger radial distance and more recent virial infall times, because most recent mergers occurred shortly before crossing within the virial radius of the host halo. Satellite-satellite mergers also occur within the host halo after virial infall, catalyzed by the large fraction of dwarf galaxies that fell in as part of a group. The merger fraction doubles for dwarf galaxies outside of the host virial radius, so the most distant dwarf galaxies in the Local Group are the most likely to have experienced a recent major merger. We discuss the implications of these results on observable dwarf merger remnants, their star formation histories, the gas content of mergers, and massive black holes in dwarf galaxies.

  4. On the dependence of galaxy morphologies on galaxy mergers

    E-Print Network [OSTI]

    Fontanot, Fabio; Hirschmann, Michaela; De Lucia, Gabriella; Kannan, Rahul; Somerville, Rachel S; Wilman, Dave

    2015-01-01

    The distribution of galaxy morphological types is a key test for models of galaxy formation and evolution, providing strong constraints on the relative contribution of different physical processes responsible for the growth of the spheroidal components. In this paper, we make use of a suite of semi-analytic models to study the efficiency of galaxy mergers in disrupting galaxy discs and building galaxy bulges. In particular, we compare standard prescriptions usually adopted in semi-analytic models, with new prescriptions proposed by Kannan et al., based on results from high-resolution hydrodynamical simulations, and we show that these new implementations reduce the efficiency of bulge formation through mergers. In addition, we compare our model results with a variety of observational measurements of the fraction of spheroid-dominated galaxies as a function of stellar and halo mass, showing that the present uncertainties in the data represent an important limitation to our understanding of spheroid formation. O...

  5. Nucleosynthesis in the ejecta of neutron star mergers

    SciTech Connect (OSTI)

    Wanajo, Shinya [National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan); Sekiguchi, Yuichiro; Kiuchi, Kenta; Shibata, Masaru [Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto 606-8502 (Japan); Nishimura, Nobuya [Astrophysics Group, iEPSAM, Keele University, Keele, ST5 5BG (United Kingdom); Kyutoku, Koutarou [Department of Physics, University of Wisconsin-Milwaukee, P.O. Box 413, Milwaukee, WI 53201 (United States)

    2014-05-02

    We present, for the first time, the result of nucleosynthesis calculations based on the fully general-relativistic simulation of a NS-NS merger with approximate neutrino transport taken into account. It is found that the bulk of the dynamical ejecta are appreciably shock-heated and neutrino-processed, resulting in a wide range of electron fraction, Y{sub e} ? 0.1-0.4. The mass-averaged abundance distribution of calculated nucleosynthesis yields is in remarkable agreement with the full-mass range (A ? 90-240) of the solar r-process curve. This implies, if our model is representative of such events, that the dynamical ejecta of NS-NS mergers can be the origin of the Galactic r-process nuclei.

  6. The Role of Primordial Kicks on Black Hole Merger Rates

    E-Print Network [OSTI]

    Miroslav Micic; Tom Abel; Steinn Sigurdsson

    2006-09-15

    Primordial stars are likely to be very massive >30 Msun, form in isolation, and will likely leave black holes as remnants in the centers of their host dark matter halos. We expect primordial stars to form in halos in the mass range 10^6-10^10 Msun. Some of these early black holes, formed at redshifts z>10, could be the seed black hole for a significant fraction of the supermassive black holes found in galaxies in the local universe. If the black hole descendants of the primordial stars exist, their mergers with nearby supermassive black holes may be a prime candidate for long wavelength gravitational wave detectors. We simulate formation and evolution of dark matter halos in LambdaCDM universe. We seed high-redshift dark matter halos with early black holes, and explore the merger history of the host halos and the implications of black hole's kick velocities arising from their coalescence. The central concentration of low mass early black holes in present day galaxies is reduced if they experience even moderate kicks of tens of km/s. Even such modest kicks allow the black holes to leave their parent halo, which consequently leads to dynamical friction being less effective on the low mass black holes that were ejected, compared to those still embedded in their parent halos. Therefore, merger rates with central supermassive black holes in the largest halos may be reduced by more than an order of magnitude. Using analytical and illustrative cosmological N-body simulations, we quantify the role of kicks on the merger rates of black holes formed from massive metal free stars with supermassive black holes in present day galaxies.

  7. Industrial Relations

    E-Print Network [OSTI]

    Ulman, Lloyd

    1987-01-01

    S. Tannenbaum. Madison: Industrial 1955. The Rise of the N ai a Working Paper 8733 INDUSTRIAL RELATIONS L l o y d UlmanEconomic Theory and Doctrine INDUSTRIAL RELATIONS Two great

  8. The Role of Primordial Kicks on Black Hole Merger Rates

    E-Print Network [OSTI]

    Miroslav Micic; Tom Abel; Steinn Sigurdsson

    2006-09-06

    Primordial stars are likely to be very massive $\\geq30\\Msun$, form in isolation, and will likely leave black holes as remnants in the centers of their host dark matter halos in the mass range $10^{6}-10^{10}\\Ms$. Such early black holes, at redshifts z$\\gtsim10$, could be the seed black holes for the many supermassive black holes found in galaxies in the local universe. If they exist, their mergers with nearby supermassive black holes may be a prime signal for long wavelength gravitational wave detectors. We simulate formation of black holes in the center of high redshift dark matter halos and explore implications of initial natal kick velocities conjectured by some formation models. The central concentration of early black holes in present day galaxies is reduced if they are born even with moderate kicks of tens of km/s. The modest kicks allow the black holes to leave their parent halo, which consequently leads to dynamical friction being less effective on the lower mass black holes as compared to those still embedded in their parent halos. Therefore, merger rates may be reduced by more than an order of magnitude. Using analytical and illustrative cosmological N--body simulations we quantify the role of natal kicks of black holes formed from massive metal free stars on their merger rates with supermassive black holes in present day galaxies. Our results also apply to black holes ejected by the gravitational slingshot mechanism.

  9. Industrial Engineering Industrial Advisory Board

    E-Print Network [OSTI]

    Gelfond, Michael

    Industrial Engineering Industrial Advisory Board (IAB) #12;PURPOSE: The Texas Tech University - Industrial Engineering Industrial Ad- visory Board (IAB) is an association of professionals with a com- mon goal - promoting and developing the Texas Tech Department of Industrial Engineering and its students

  10. Partnering for success: Industrial technologies program

    SciTech Connect (OSTI)

    None, None

    2004-02-01

    Partnering for Success features the R&D and industrial energy management best practices and accomplishments of manufacturers who are partnering with DOE.

  11. Steam Digest 2001: Office of Industrial Technologies

    SciTech Connect (OSTI)

    None, None

    2002-01-01

    Steam Digest 2001 chronicles Best Practices Program's contributions to the industrial trade press for 2001, and presents articles that cover technical, financial and managerial aspects of steam optimization.

  12. Outlook for Industrial Energy Benchmarking 

    E-Print Network [OSTI]

    Hartley, Z.

    2000-01-01

    The U.S. Environmental Protection Agency is exploring options to sponsor an industrial energy efficiency benchmarking study to identify facility specific, cost-effective best practices and technologies. Such a study could help develop a common...

  13. Supply chain practices in the petroleum downstream

    E-Print Network [OSTI]

    Santos Manzano, Fidel

    2005-01-01

    This thesis studies current supply chain practices in the petroleum downstream industry, using ExxonMobil as a case study. Based on the analysis of the literature and the interaction with industry experts, this work describes ...

  14. Luminous blue variables and superluminous supernovae from binary mergers

    SciTech Connect (OSTI)

    Justham, Stephen; Podsiadlowski, Philipp; Vink, Jorick S. E-mail: podsi@astro.ox.ac.uk

    2014-12-01

    Evidence suggests that the direct progenitor stars of some core-collapse supernovae (CCSNe) are luminous blue variables (LBVs), perhaps including some Type II 'superluminous supernovae' (SLSNe). We examine models in which massive stars gain mass soon after the end of core hydrogen burning. These are mainly intended to represent mergers following a brief contact phase during early Case B mass transfer, but may also represent stars which gain mass in the Hertzsprung Gap or extremely late during the main-sequence phase for other reasons. The post-accretion stars spend their core helium-burning phase as blue supergiants (BSGs), and many examples are consistent with being LBVs at the time of core collapse. Other examples are yellow supergiants at explosion. We also investigate whether such post-accretion stars may explode successfully after core collapse. The final core properties of post-accretion models are broadly similar to those of single stars with the same initial mass as the pre-merger primary star. More surprisingly, when early Case B accretion does affect the final core properties, the effect appears likely to favor a successful SN explosion, i.e., to make the core properties more like those of a lower-mass single star. However, the detailed structures of these cores sometimes display qualitative differences to any single-star model we have calculated. The rate of appropriate binary mergers may match the rate of SNe with immediate LBV progenitors; for moderately optimistic assumptions we estimate that the progenitor birthrate is ?1% of the CCSN rate.

  15. The role of product management in the success of mergers and acquisitions : analyzing Eaton's 2008 Phoenixtec Power Company Ltd. acquisition

    E-Print Network [OSTI]

    Ren, Lijuan, S.M. Massachusetts Institute of Technology

    2013-01-01

    Mergers and acquisitions are important ways for multinational companies to expand and grow their business. This thesis studies the role of product management in the success of mergers and acquisitions by analyzing Eaton's ...

  16. Termination of star formation by BH feedback in equal- and unequal-mass mergers of disk and elliptical galaxies

    E-Print Network [OSTI]

    Peter H. Johansson; Thorsten Naab; Andreas Burkert

    2008-09-19

    We present binary galaxy merger simulations of gas-rich disks (Sp-Sp), of early-type galaxies and disks (E-Sp, mixed mergers), and mergers of early-type galaxies (E-E, dry mergers) with varying mass ratios and different progenitor morphologies. The simulations include radiative cooling, star formation and black hole (BH) accretion and the associated feedback processes. We find for Sp-Sp mergers, that the peak star formation rate and BH accretion rate decrease and the growth timescales of the central black holes and newly formed stars increase with higher progenitor mass ratios. The termination of star formation by BH feedback in disk mergers is significantly less important for higher progenitor mass ratios (e.g. 3:1 and higher). In addition, the inclusion of BH feedback suppresses efficiently star formation in dry E-E mergers and mixed E-Sp mergers.

  17. Light Curves and Spectra from a Thermonuclear Explosion of a White Dwarf Merger

    E-Print Network [OSTI]

    van Rossum, Daniel R; Fisher, Robert; Wollaeger, Ryan T; Garcia-Berro, Enrique; Aznar-Siguan, Gabriela; Ji, Suoqing; Loren-Aguilar, Pablo

    2015-01-01

    Double-degenerate (DD) mergers of carbon-oxygen (CO) white dwarfs have recently emerged as a leading candidate for normal Type Ia supernovae (SNe Ia). However, many outstanding questions surround DD mergers, including the characteristics of their light curves and spectra. We have recently identified a spiral instability in the post-merger phase of DD mergers, and demonstrated that this instability self-consistently leads to detonation in some cases. We call this the spiral merger SN Ia model. Here, we utilize the \\supernu\\ radiative transfer software to calculate 3D synthetic light curves and spectra of the spiral merger simulation with a system mass of 2.1 $M_\\odot$ of Kashyap et al. 2015. Because of their large system masses, both violent and spiral merger light curves are slowly declining. The spiral merger resembles very slowly-declining SNe Ia, including SN 2001ay, and provides a more natural explanation for its observed properties than other SN Ia explosion models. Previous synthetic light curves and sp...

  18. Magnetically-induced outflows from binary neutron star merger remnants

    E-Print Network [OSTI]

    Siegel, Daniel M

    2015-01-01

    Recent observations by the Swift satellite have revealed long-lasting ($\\sim 10^2-10^5\\,\\mathrm{s}$), "plateau-like" X-ray afterglows in the vast majority of short gamma-ray bursts events. This has put forward the idea of a long-lived millisecond magnetar central engine being generated in a binary neutron star (BNS) merger and being responsible for the sustained energy injection over these timescales ("magnetar model"). We elaborate here on recent simulations that investigate the early evolution of such a merger remnant in general-relativistic magnetohydrodynamics. These simulations reveal very different conditions than those usually assumed for dipole spin-down emission in the magnetar model. In particular, the surrounding of the newly formed NS is polluted by baryons due to a dense, highly magnetized and isotropic wind from the stellar surface that is induced by magnetic field amplification in the interior of the star. The timescales and luminosities of this wind are compatible with early X-ray afterglows, ...

  19. Nucleosynthesis in the Ejecta of Neutron Star Mergers

    E-Print Network [OSTI]

    Dirk Martin; Albino Perego; Almudena Arcones; Oleg Korobkin; Friedrich-Karl Thielemann

    2015-09-25

    Heavy elements like gold, platinum or uranium are produced in the r-process, which needs neutron-rich and explosive environments. Neutron star mergers are a promising candidate for an r-process site. They exhibit three different channels for matter ejection fulfilling these conditions: dynamic ejecta due to tidal torques, neutrino-driven winds and evaporating matter from the accretion disk. We present a first study of the integrated nucleosynthesis for a neutrino-driven wind from a neutron star merger with a hyper-massive neutron star. Trajectories from a recent hydrodynamical simulation are divided into four different angle regions and post-processed with a reaction network. We find that the electron fraction varies around $Y_e \\approx 0.1 - 0.4$, but its distribution differs for every angle of ejection. Hence, the wind ejecta do not undergo a robust r-process, but rather possess distinct nucleosynthesis yields depending on the angle range. Compared to the dynamic ejecta, a smaller amount of neutron-rich matter gets unbound, but the production of lighter heavy elements with $A \\lesssim 130$ in the neutrino-driven wind can complement the strong r-process of the dynamic ejecta.

  20. COSMOLOGICAL FAST RADIO BURSTS FROM BINARY WHITE DWARF MERGERS

    SciTech Connect (OSTI)

    Kashiyama, Kazumi; Mészáros, Peter [Department of Astronomy and Astrophysics, Department of Physics, Center for Particle and Gravitational Astrophysics, Pennsylvania State University, University Park, PA 16802 (United States)] [Department of Astronomy and Astrophysics, Department of Physics, Center for Particle and Gravitational Astrophysics, Pennsylvania State University, University Park, PA 16802 (United States); Ioka, Kunihito, E-mail: kzk15@psu.edu, E-mail: nnp@psu.edu, E-mail: kunihito.ioka@kek.jp [Theory Center, Institute of Particle and Nuclear Studies, KEK, Department of Particle and Nuclear Physics, the Graduate University for Advanced Studies (Sokendai), Tsukuba 305-0801 (Japan)] [Theory Center, Institute of Particle and Nuclear Studies, KEK, Department of Particle and Nuclear Physics, the Graduate University for Advanced Studies (Sokendai), Tsukuba 305-0801 (Japan)

    2013-10-20

    Recently, Thornton et al. reported the detection of four fast radio bursts (FRBs). The dispersion measures indicate that the sources of these FRBs are at cosmological distance. Given the large full sky event rate ?10{sup 4} sky{sup –1} day{sup –1}, the FRBs are a promising target for multi-messenger astronomy. Here we propose double degenerate, binary white-dwarf (WD) mergers as the source of FRBs, which are produced by coherent emission from the polar region of a rapidly rotating, magnetized massive WD formed after the merger. The basic characteristics of the FRBs, such as the energetics, emission duration and event rate, can be consistently explained in this scenario. As a result, we predict that some FRBs can accompany type Ia supernovae (SNe Ia) or X-ray debris disks. Simultaneous detection could test our scenario and probe the progenitors of SNe Ia, and moreover would provide a novel constraint on the cosmological parameters. We strongly encourage future SN and X-ray surveys that follow up FRBs.

  1. Comprehensive nucleosynthesis analysis for ejecta of compact binary mergers

    E-Print Network [OSTI]

    Just, Oliver; Pulpillo, Ricard Ardevol; Goriely, Stephane; Janka, H -Thomas

    2015-01-01

    We present a comprehensive study of r-process element nucleosynthesis in the ejecta of compact binary mergers (CBMs) and their relic black-hole (BH)-torus systems. The evolution of the BH-accretion tori is simulated for seconds with a Newtonian hydrodynamics code including viscosity effects, pseudo-Newtonian gravity for rotating BHs, and an energy-dependent two-moment closure scheme for the transport of electron neutrinos and antineutrinos. The investigated cases are guided by relativistic double neutron star (NS-NS) and NS-BH merger models, producing ~3-6 Msun BHs with rotation parameters of A~0.8 and tori of 0.03-0.3 Msun. Our nucleosynthesis analysis includes the dynamical (prompt) ejecta expelled during the CBM phase and the neutrino and viscously driven outflows of the relic BH-torus systems. While typically ~20-25% of the initial accretion-torus mass are lost by viscously driven outflows, neutrino-powered winds contribute at most another ~1%, but neutrino heating enhances the viscous ejecta significantl...

  2. Mergers & acquisitions in the medical device industry : an exploration of factors influencing valuation

    E-Print Network [OSTI]

    Robins, Jason S

    2008-01-01

    Valuing medical device companies and technologies is a complex process. Several different approaches and models are often used in combination to determine a transaction valuation. This research uses the Enterprise Value ...

  3. Looking Back with Interest (Rates): Merger Retrospectives in the U.S. Banking Industry

    E-Print Network [OSTI]

    Palmer, Joshua Lee

    2011-01-01

    Burt Fillmore LaMoure Cumberland Polk First National BankFillmore LaMoure Cumberland Polk Caledonia Acquiring Bank'sFillmore LaMoure Cumberland Polk Caledonia * Significant at

  4. Energy Efficiency Improvement and Cost Saving Opportunities for the U.S. Iron and Steel Industry An ENERGY STAR(R) Guide for Energy and Plant Managers

    E-Print Network [OSTI]

    Worrell, Ernst

    2011-01-01

    Programme (1998). Good Practice Guide 249: Energy Savings inProgramme (1999). Good Practice Guide 225: Industrial

  5. Sustainability the forest and paper industry

    E-Print Network [OSTI]

    Sustainability the forest and paper industry ­ on its way to sustainability http://www.icfpa.org/_documents/ICFPAStatement1.pdf #12;Contents Introduction The Forest and Paper Industry's Economic Profile A Key Social Actor Sustainable Forestry Practices In Tune with the Environment The Forest and Paper Industry's Energy Profile 2 3

  6. Sustainability the forest and paper industry

    E-Print Network [OSTI]

    Sustainability the forest and paper industry ­ on its way to sustainability #12;Contents Introduction The Forest and Paper Industry's Economic Profile A Key Social Actor Sustainable Forestry Practices In Tune with the Environment The Forest and Paper Industry's Energy Profile 2 3 5 7 9 12 #12

  7. Best Practices in Industrial Data Management

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

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i n c i p a l De p uBUSEnergy| Department ofEnergyDOE-HDBK-1118-99in

  8. Radio Remnants of Compact Binary Mergers - the Electromagnetic Signal that will follow the Gravitational Waves

    E-Print Network [OSTI]

    Ehud Nakar; Tsvi Piran

    2011-02-04

    The question "what is the observable electromagnetic (EM) signature of a compact binary merger?" is an intriguing one with crucial consequences to the quest for gravitational waves (GW). Compact binary mergers are prime sources of GW, targeted by current and next generation detectors. Numerical simulations have demonstrated that these mergers eject energetic sub-relativistic (or even relativistic) outflows. This is certainly the case if the mergers produce short GRBs, but even if not, significant outflows are expected. The interaction of such outflows with the surround matter inevitably leads to a long lasting radio signal. We calculate the expected signal from these outflows (our calculations are also applicable to short GRB orphan afterglows) and we discuss their detectability. We show that the optimal search for such signal should, conveniently, take place around 1.4 GHz. Realistic estimates of the outflow parameters yield signals of a few hundred $\\mu$Jy, lasting a few weeks, from sources at the detection horizon of advanced GW detectors. Followup radio observations, triggered by GW detection, could reveal the radio remnant even under unfavorable conditions. Upcoming all sky surveys can detect a few dozen, and possibly even thousands, merger remnants at any give time, thereby providing robust merger rate estimates even before the advanced GW detectors become operational. In fact, the radio transient RT 19870422 fits well the overall properties predicted by our model and we suggest that its most probable origin is a compact binary merger radio remnant.

  9. The water megamaser in the merger system Arp299

    E-Print Network [OSTI]

    A. Tarchi; P. Castangia; C. Henkel; K. M. Menten

    2006-10-30

    We present preliminary results of an interferometric study of the water megamaser in the merger system Arp299. This system is composed of two main sources: IC694 and NGC3690. There is clear evidence that most of the water maser emission is associated with the nucleus of the latter, confirming the presence of an optically obscured AGN as previously suggested by X-ray observations. Furthermore, emission arises from the inner regions of IC694, where an OH megamaser is also present. The velocity of the water maser line is blueshifted w.r.t. the optically determined systemic velocity and is consistent with that of the OH megamaser line. This finding might then indicate that both masers are associated with the same (expanding) structure and that, for the first time, strong 22 GHz water and 1.67 GHz OH maser emission has been found to coexist.

  10. Fossil Radio Plasma in Cluster Merger Shock Waves

    E-Print Network [OSTI]

    Torsten A. Ensslin; Marcus Brueggen

    2001-04-06

    In several merging clusters of galaxies so-called cluster radio relics have been observed. These are extended radio sources which do not seem to be associated with any radio galaxy. Two competing physical mechanisms to accelerate the radio emitting electrons have been proposed: (i) diffusive shock acceleration and (ii) adiabatic compression of fossil radio plasma by merger shock waves. Here the second scenario is investigated. We present detailed 3-dimensional magneto-hydrodynamical simulations of the passage of a radio plasma cocoon through a shock wave. Taking into account synchrotron, inverse Compton and adiabatic energy losses and gains we evolved the relativistic electron population to produce synthetic radio maps in Stokes I-, Q-, and U-polarisation. In the synthetic radio maps the electric polarisation vectors are mostly perpendicular to the filamentary radio structures.

  11. CGCG 480-022: A distant lonesome merger?

    E-Print Network [OSTI]

    Carretero, C; Gonzalez-Garcia, C; Beckman, J E; Quilis, V

    2006-01-01

    We present a complete analysis, which includes morphology, kinematics, stellar populations and N-body simulations of CGCG 480-022, the most distant (cz=14317 km/s) isolated galaxy studied so far in such detail. The results all support the hypothesis that this galaxy has suffered a major merger event with a companion of ~0.1 times its mass. Morphology reveals the presence of a circumnuclear ring and possibly further ring debris. The radial velocity curve looks symmetrical, whilst the velocity dispersion increases with radius reaching values that do not correspond to a virialized system. Moreover, this galaxy deviates significantly from the Fundamental Plane and the Faber-Jackson relation. The stellar population analysis show that the ring is younger and more metal-rich, which suggest that it has undergone a fairly recent burst of star formation. Both morphological and dynamical results are in broad agreeement with our N-body simulations.

  12. CGCG 480-022: A distant lonesome merger?

    E-Print Network [OSTI]

    C. Carretero; A. Vazdekis; C. Gonzalez-Garcia; J. E. Beckman; V. Quilis; ;

    2006-08-01

    We present a complete analysis, which includes morphology, kinematics, stellar populations and N-body simulations of CGCG 480-022, the most distant (cz=14317 km/s) isolated galaxy studied so far in such detail. The results all support the hypothesis that this galaxy has suffered a major merger event with a companion of ~0.1 times its mass. Morphology reveals the presence of a circumnuclear ring and possibly further ring debris. The radial velocity curve looks symmetrical, whilst the velocity dispersion increases with radius reaching values that do not correspond to a virialized system. Moreover, this galaxy deviates significantly from the Fundamental Plane and the Faber-Jackson relation. The stellar population analysis show that the ring is younger and more metal-rich, which suggest that it has undergone a fairly recent burst of star formation. Both morphological and dynamical results are in broad agreeement with our N-body simulations.

  13. Star Formation in Mergers and Interacting Galaxies: Gathering the Fuel

    E-Print Network [OSTI]

    Curtis Struck

    2006-10-06

    Selected results from recent studies of star formation in galaxies at different stages of interaction are reviewed. Recent results from the Spitzer Space Telescope are highlighted. Ideas on how large-scale driving of star formation in interacting galaxies might mesh with our understanding of star formation in isolated galaxies and small scale mechanisms within galaxies are considered. In particular, there is evidence that on small scales star formation is determined by the same thermal and turbulent processes in cool compressed clouds as in isolated galaxies. If so, this affirms the notion that the primary role of large-scale dynamics is to gather and compress the gas fuel. In gas-rich interactions this is generally done with increasing efficiency through the merger process.

  14. The Triple-Ring Nebula around SN1987A: Fingerprint of a binary merger

    E-Print Network [OSTI]

    T. Morris; Ph. Podsiadlowski

    2007-03-13

    Supernova 1987A, the first naked-eye supernova observed since Kepler's supernova in 1604, defies a number of theoretical expectations. Its anomalies have long been attributed to a merger between two massive stars that occurred some 20,000 years before the explosion, but so far there has been no conclusive proof that this merger took place. Here, we present three-dimensional hydrodynamical simulations of the mass ejection associated with such a merger and the subsequent evolution of the ejecta, and we show that this accurately reproduces the properties of the triple-ring nebula surrounding the supernova.

  15. On the reliability of merger-trees and the mass growth histories of dark matter haloes

    E-Print Network [OSTI]

    N. Hiotelis; A. Del Popolo

    2005-08-24

    We have used merger trees realizations to study the formation of dark matter haloes. The construction of merger-trees is based on three different pictures about the formation of structures in the Universe. These pictures include: the spherical collapse (SC), the ellipsoidal collapse (EC) and the non-radial collapse (NR). The reliability of merger-trees has been examined comparing their predictions related to the distribution of the number of progenitors, as well as the distribution of formation times, with the predictions of analytical relations. The comparison yields a very satisfactory agreement. Subsequently, >.........

  16. OTHER INDUSTRIES

    Office of Energy Efficiency and Renewable Energy (EERE)

    AMO funded research results in novel technologies in diverse industries beyond the most energy intensive ones within the U.S. Manufacturing sector. These technologies offer quantifiable energy...

  17. Merger signatures in the galaxy cluster A98

    SciTech Connect (OSTI)

    Paterno-Mahler, R.; Blanton, E. L.; Randall, S. W.; Bulbul, E.; Andrade-Santos, F.; Jones, C.; Murray, S.; Johnson, R. E. E-mail: eblanton@bu.edu E-mail: ebulbul@head.cfa.harvard.edu E-mail: cjones@cfa.harvard.edu E-mail: rjohnson@gettysburg.edu

    2014-08-20

    We present results from Chandra and XMM-Newton observations of Abell 98 (A98), a galaxy cluster with three major components: a relatively bright subcluster to the north (A98N), a disturbed subcluster to the south (A98S), and a fainter subcluster to the far south (A98SS). We find evidence for surface brightness and temperature asymmetries in A98N consistent with a shock-heated region to the south, which could be created by an early stage merger between A98N and A98S. Deeper observations are required to confirm this result. We also find that A98S has an asymmetric core temperature structure, likely due to a separate ongoing merger. Evidence for this is also seen in optical data. A98S hosts a wide-angle tail radio source powered by a central active galactic nucleus (AGN). We find evidence for a cavity in the intracluster medium that has been evacuated by one of the radio lobes, suggesting that AGN feedback is operating in this system. Examples of cavities in non-cool core clusters are relatively rare. The three subclusters lie along a line in projection, suggesting the presence of a large-scale filament. We observe emission along the filament between A98N and A98S, and a surface brightness profile shows emission consistent with the overlap of the subcluster extended gas halos. We find the temperature of this region is consistent with the temperature of the gas at similar radii outside this bridge region. Lastly, we examine the cluster dynamics using optical data. We conclude A98N and A98S are likely bound to one another with a 67% probability, while A98S and A98SS are not bound at a high level of significance.

  18. Applied Engineering BSc -210 ECTS programs -emphasis on practical projects in cooperation with industry Students in their 5th-7th semesters can optionally take a part of their studies as specialized internships instead of specialized elective courses

    E-Print Network [OSTI]

    Karlsson, Brynjar

    Management BT EFB 1003 Construction Materials T-201-GSKI Data Structures VT EFV 1003 Metallurgy, Metal Processes I VT EFV 1003 Metallurgi, Metal Processes I Practical Project in Structures Practical Project

  19. Energy Efficiency Improvement and Cost Saving Opportunities for the Petrochemical Industry - An ENERGY STAR(R) Guide for Energy and Plant Managers

    E-Print Network [OSTI]

    Neelis, Maarten

    2008-01-01

    Programme (1994). Good Practice Guide 141: Waste heatProgramme (1998). Good Practice Guide 249: Energy Savings inProgramme (1999a). Good Practice Guide 225: Industrial

  20. The NYSE-Archipelago merger : a case study in the evolution of exchange structures

    E-Print Network [OSTI]

    Walker, James F. (James Francis)

    2006-01-01

    At the time of this writing, the NYSE had just completed its historic merger with Archipelago, LLC, while changing its ownership structure to a public company. The conditions leading up to this transformation are descriptive ...

  1. Type Ia supernovae from merging white dwarfs. II. Post-merger...

    Office of Scientific and Technical Information (OSTI)

    out multidimensional simulations of 'tamped' SN Ia models, using both particle and grid-based codes to study the merger and explosion dynamics and a radiative transfer code to...

  2. Downstream Petroleum Mergers and Acquisitions by U.S. Major Oil Companies

    Reports and Publications (EIA)

    2009-01-01

    A summary presentation of mergers and acquisitions by U.S. major oil companies (including the U.S. affiliates of foreign major oil companies). The presentation focuses on petroleum refining over the last several years through late 2009.

  3. The CEO-merger connection : a top leadership perspective on large intercorporate combinations

    E-Print Network [OSTI]

    Park, Kathleen Marshall

    2005-01-01

    To better understand large mergers and acquisitions (M&A) as major intercorporate strategic maneuvers, I study a key concern from the chief executive perspective at each stage of combining two firms. For the inception ...

  4. Electricity Merger Policy in the Shadow of Regulation

    E-Print Network [OSTI]

    Gilbert, Richard J; Newberry, David M

    2006-01-01

    Caps to ?! #? #!? ,” The Electricity Journal, vol. 14, May,Analysis of the New Jersey Electricity Market ” New Jersey2005), “Regulating the Electricity Supply Industry in

  5. Do Regulators Read the Literature? Bank Merger Regulation, 1963-1990

    E-Print Network [OSTI]

    DeYoung, Robert

    1994-07-01

    and product markets. The Acts eliminated interest rate ceilings, permitted thrifts to offer products previously limited to banks (e.g., consumer loans, commercial paper, trust accounts, credit cards), and allowed mergers between banks and thrifts and across... and product markets. The Acts eliminated interest rate ceilings, permitted thrifts to offer products previously limited to banks (e.g., consumer loans, commercial paper, trust accounts, credit cards), and allowed mergers between banks and thrifts and across...

  6. Tax consequences of a merger or acquisition of or by a subchapter S corporation 

    E-Print Network [OSTI]

    Sanchez, Roxana Maria

    1976-01-01

    TAX CONSEQUENCES OF A MERGER OR ACQUISITION OF OR BY A SUBCHAPTER S CORPORATION A Thesis by ROXANA MARIA SANCHEc Submitted to the Graduate College of Texas AacM University in partial fulfillment of the requirement for the degree of MASTER... OF SCIENCE May 1976 Major Subject: Accounting TAX CONSEQUENCES OF A MERGER OR ACQUISITION OF OR BY A SUBCHAPTER S CORPORATION A Thesis by ROXANA MARIA SANCHEZ Approved as to style and content by: Chairman of' Committee) (Head of' Department) ggn...

  7. SURVEYING INDUSTRIAL ROLES IN OPEN SOURCE SOFTWARE DEVELOPMENT

    E-Print Network [OSTI]

    SURVEYING INDUSTRIAL ROLES IN OPEN SOURCE SOFTWARE DEVELOPMENT Øyvind Hauge, Carl-Fredrik Sørensen: Industry uses Open Source Software (OSS) to a greater and greater extent. We have defined four industrial Source, Industry, Roles, Survey, Motivations, Development Practices 1. INTRODUCTION The cost of producing

  8. Rationale for State Support of Industries of the Future 

    E-Print Network [OSTI]

    Trabachino, C.; Muller, M.

    2002-01-01

    Through its Industries of the Future (IOF) strategy, the US DOE's Office of Industrial Technologies (OIT) seeks to develop and deploy advanced technologies and practices that will increase energy efficiency, environmental performance...

  9. Industry Economist

    Broader source: Energy.gov [DOE]

    A successful candidate in this position will report to the Manager of Load Forecasting and Analysis of the Customer Services Organization. He/she serves as an industry economist engaged in load...

  10. Improving Pumping System Performance: A Sourcebook for Industry, Second Edition

    SciTech Connect (OSTI)

    Not Available

    2006-05-01

    Prepared for the DOE Industrial Technologies Program, this sourcebook contains the practical guidelines and information manufacturers need to improve the efficiency of their pumping systems.

  11. Industrial Energy Conservation by New Process Design and Efficiency Improvements 

    E-Print Network [OSTI]

    Kusik, C. L.; Stickles, R. P.; Machacek, R. F.

    1983-01-01

    Industrial energy productivity has increased substantially over the last decade. Such measures as implementing efficient housekeeping practices and using retrofit equipment on currently operating production units have ...

  12. Patent Scope and Innovation in the Software Industry

    E-Print Network [OSTI]

    Shamos, Michael I.

    Patent Scope and Innovation in the Software Industry Julie E. Cohen Mark A. Lemley Table.................................................................................................4 I. Software Patents: History, Practice, and Theory .....................................7 A. History: The Section 101 Patentability Debate..............................8 B. Practice: Anything Goes

  13. Eccentric mergers of black holes with spinning neutron stars

    E-Print Network [OSTI]

    William E. East; Vasileios Paschalidis; Frans Pretorius

    2015-06-26

    We study dynamical capture binary black hole-neutron star (BH-NS) mergers focusing on the effects of the neutron star spin. These events may arise in dense stellar regions, such as globular clusters, where the majority of neutron stars are expected to be rapidly rotating. We initialize the BH-NS systems with positions and velocities corresponding to marginally unbound Newtonian orbits, and evolve them using general-relativistic hydrodynamical simulations. We find that even moderate spins can significantly increase the amount of mass in unbound material. In some of the more extreme cases, there can be up to a third of a solar mass in unbound matter. Similarly, large amounts of tidally stripped material can remain bound and eventually accrete onto the BH---as much as a tenth of a solar mass in some cases. These simulations demonstrate that it is important to treat neutron star spin in order to make reliable predictions of the gravitational wave and electromagnetic transient signals accompanying these sources.

  14. Bright Transients from Black Hole - Neutron Star Mergers

    E-Print Network [OSTI]

    D'Orazio, Daniel J; Murray, Norman W; Price, Larry

    2016-01-01

    Direct detection of black hole-neutron star (BHNS) pairs is anticipated with the advent of aLIGO. Electromagnetic counterparts may be crucial for a confident gravitational-wave detection as well as for extraction of astronomical information. Yet BHNS star pairs are notoriously dark and so inaccessible to telescopes. Contrary to this expectation, a bright electromagnetic transient can occur in the final moments before merger as long as the neutron star is highly magnetized. The orbital motion of the neutron star magnet creates a Faraday flux and corresponding power available for luminosity. A spectrum of curvature radiation ramps up until the rapid injection of energy ignites a fireball, which would appear as an energetic blackbody peaking in the X-ray to gamma-rays for neutron star field strengths ranging from $10^{12}$G to $10^{16}$G respectively and a $10M_{\\odot}$ black hole. The fireball event may last from a few milliseconds to a few seconds depending on the NS magnetic field strength, and may be observa...

  15. Nucleosynthesis in neutrino-driven winds after neutron star mergers

    E-Print Network [OSTI]

    Martin, Dirk; Arcones, Almudena; Thielemann, Friedrich-Karl; Korobkin, Oleg; Rosswog, Stephan

    2015-01-01

    We present a comprehensive nucleosynthesis study of the neutrino-driven wind in the aftermath of a binary neutron star merger. Our focus is the initial remnant phase when a massive central neutron star is present. Using tracers from a recent hydrodynamical simulation, we determine total masses and integrated abundances to characterize the composition of unbound matter. We find that the nucleosynthetic yields depend sensitively on both the life time of the massive neutron star and the polar angle. Matter in excess of up to $9 \\cdot 10^{-3} M_\\odot$ becomes unbound until $\\sim 200~{\\rm ms}$. Due to electron fractions of $Y_{\\rm e} \\approx 0.2 - 0.4$ mainly nuclei with mass numbers $A < 130$ are synthesized, complementing the yields from the earlier dynamic ejecta. Mixing scenarios with these two types of ejecta can explain the abundance pattern in r-process enriched metal-poor stars. Additionally, we calculate heating rates for the decay of the freshly produced radioactive isotopes. The resulting light curve...

  16. Industrial energy efficiency policy in China

    E-Print Network [OSTI]

    Price, Lynn; Worrell, Ernst; Sinton, Jonathan; Yun, Jiang

    2001-01-01

    Economic Indicators," Energy Policy 25(7'-9): 727-744. X u ,Best Practice Energy Policies in the Industrial Sector, Mayand Intensity Change," Energy Policy 22(3): Sinton, J.E.

  17. Industrial Low Temperature Waste Heat Utilization 

    E-Print Network [OSTI]

    Altin, M.

    1981-01-01

    In this paper, some common and emerging techniques to better utilize energy in the chemical process industries are discussed. Temperature levels of waste heat available are pointed out. Emerging practices for further economical utilization of waste...

  18. Cell fleet planning : an industry case study

    E-Print Network [OSTI]

    Silva, Armando C.

    1984-01-01

    The objective of this thesis is to demonstrate the practical use of the Cell Fleet Planning Model in planning the fleet for the U.S. airline industry. The Cell Model is a cell theory, linear programming approach to fleet ...

  19. Steam Pressure Reduction: Opportunities and Issues; A BestPractices Steam Technical Brief

    SciTech Connect (OSTI)

    Not Available

    2005-11-01

    A BestPractices Technical Brief describing industrial steam generation systems and opportunities for reducing steam system operating pressure.

  20. Low mass binary neutron star mergers : gravitational waves and neutrino emission

    E-Print Network [OSTI]

    Francois Foucart; Roland Haas; Matthew D. Duez; Evan O'Connor; Christian D. Ott; Luke Roberts; Lawrence E. Kidder; Jonas Lippuner; Harald P. Pfeiffer; Mark A. Scheel

    2015-10-21

    Neutron star mergers are among the most promising sources of gravitational waves for advanced ground-based detectors. These mergers are also expected to power bright electromagnetic signals, in the form of short gamma-ray bursts, infrared/optical transients, and radio emission. Simulations of these mergers with fully general relativistic codes are critical to understand the merger and post-merger gravitational wave signals and their neutrinos and electromagnetic counterparts. In this paper, we employ the SpEC code to simulate the merger of low-mass neutron star binaries (two $1.2M_\\odot$ neutron stars) for a set of three nuclear-theory based, finite temperature equations of state. We show that the frequency peaks of the post-merger gravitational wave signal are in good agreement with predictions obtained from simulations using a simpler treatment of gravity. We find, however, that only the fundamental mode of the remnant is excited for long periods of time: emission at the secondary peaks is damped on a millisecond timescale in the simulated binaries. For such low-mass systems, the remnant is a massive neutron star which, depending on the equation of state, is either permanently stable or long-lived. We observe strong excitations of l=2, m=2 modes, both in the massive neutron star and in the form of hot, shocked tidal arms in the surrounding accretion torus. We estimate the neutrino emission of the remnant using a neutrino leakage scheme and, in one case, compare these results with a gray two-moment neutrino transport scheme. We confirm the complex geometry of the neutrino emission, also observed in previous simulations with neutrino leakage, and show explicitly the presence of important differences in the neutrino luminosity, disk composition, and outflow properties between the neutrino leakage and transport schemes.

  1. The Effect of Spatial Correlations on Merger Trees of Dark Matter Haloes

    E-Print Network [OSTI]

    Masahiro Nagashima; Naoteru Gouda

    1996-08-13

    The effects of spatial correlations of density fluctuations on merger histories of dark matter haloes (so-called `{\\it merger trees}') are analysed. We compare the mass functions of dark haloes derived by a new method for calculating merger trees, that proposed by Rodrigues \\& Thomas (RT), with those given by other methods such as the Block model, the Press-Schechter formula and our own formula in which the mass functions are analytically expressed in a way that takes into consideration the spatial correlations. It is found that the mass functions given by the new method are well fit by those given by our formula. We believe that new method (RT) {\\it naturally} and correctly takes into account the spatial correlations of the density fluctuations due to a calculated, grid-based realisation of the density fluctuations and so is very useful for estimating the merger tree accurately in a way that takes into consideration spatial correlations. Moreover, by applying our formula, we present an analytic expression which reproduces the mass function derived by the Block model. We therefore show clearly why and how the mass functions given by the new method and the Block model are different from each other. Furthermore, we note that the construction of merger trees is sensitive to the criterion of collapse and merging of overlapped haloes in cases in which two or more haloes happen to overlap. In fact, it is shown that the mass function is very much affected when the criterion of overlapping is changed.

  2. Spectral properties of the post-merger gravitational-wave signal from binary neutron stars

    E-Print Network [OSTI]

    Kentaro Takami; Luciano Rezzolla; Luca Baiotti

    2015-03-06

    Extending previous work by a number of authors, we have recently presented a new approach in which the detection of gravitational waves from merging neutron star binaries can be used to determine the equation of state of matter at nuclear density and hence the structure of neutron stars. In particular, after performing a large number of numerical-relativity simulations of binaries with nuclear equations of state, we have found that the post-merger emission is characterized by two distinct and robust spectral features. While the high-frequency peak was already shown to be associated with the oscillations of the hypermassive neutron star produced by the merger and to depend on the equation of state, we have highlighted that the low-frequency peak is related to the merger process and to the total compactness of the stars in the binary. This relation is essentially universal and provides a powerful tool to set tight constraints on the equation of state. We here provide additional information on the extensive analysis performed, illustrating the methods used, the tests considered, as well as the robustness of the results. We also discuss additional relations that can be deduced when exploring the data and how these correlate with various properties of the binary. Finally, we present a simple mechanical toy model that explains the main spectral features of the post-merger signal and can even reproduce analytically the complex waveforms emitted right after the merger.

  3. GRB 080503 late afterglow re-brightening: signature of a magnetar powered merger-nova

    E-Print Network [OSTI]

    Gao, He; Wu, Xue-Feng; Dai, Zi-Gao; Zhang, Bing

    2015-01-01

    GRB 080503 is a short gamma-ray burst (GRB) detected by \\emph{Swift} and has been classified as a compact-star-merger-origin GRB. The soft extended emission and the simultaneous late re-brightening in both the X-ray and optical afterglow lightcurves raise interesting questions regarding its physical origin. We show that the broad-band data of GRB 080503 can be well explained within the framework of the double neutron star merger model, provided that the merger remnant is a rapidly-rotating massive neutron star with an extremely high magnetic field (i.e. a millisecond magnetar). We show that the late optical re-brightening is consistent with the emission from a magnetar-powered "merger-nova". This adds one more case to the growing sample of merger-novae associated with short GRBs. The soft extended emission and the late X-ray excess emission are well connected through a magnetar dipole spin-down luminosity evolution function, suggesting that direct magnetic dissipation is the mechanism to produce these X-rays....

  4. Environmental Dependence of Dark Matter Halo Growth I: Halo Merger Rates

    E-Print Network [OSTI]

    Onsi Fakhouri; Chung-Pei Ma

    2009-01-23

    In an earlier paper we quantified the mean merger rate of dark matter haloes as a function of redshift z, descendant halo mass M0, and progenitor halo mass ratio xi using the Millennium simulation of the LCDM cosmology. Here we broaden that study and investigate the dependence of the merger rate of haloes on their surrounding environment. A number of local mass overdensity variables, both including and excluding the halo mass itself, are tested as measures of a halo's environment. The simple functional dependence on z, M0, and xi of the merger rate found in our earlier work is largely preserved in different environments, but we find that the overall amplitude of the merger rate has a strong positive correlation with the environmental densities. For galaxy-mass haloes, we find mergers to occur ~2.5 times more frequently in the densest regions than in voids at both z=0 and higher redshifts. Higher-mass haloes show similar trends. We present a fitting form for this environmental dependence that is a function of both mass and local density and is valid out to z=2. The amplitude of the progenitor (or conditional) mass function shows a similarly strong correlation with local overdensity, suggesting that the extended Press-Schechter model for halo growth needs to be modified to incorporate environmental effects.

  5. Black Holes in Galaxy Mergers: Evolution of Quasars

    E-Print Network [OSTI]

    Philip F. Hopkins; Lars Hernquist; Thomas J. Cox; Tiziana Di Matteo; Paul Martini; Brant Robertson; Volker Springel

    2005-06-13

    Based on numerical simulations of gas-rich galaxy mergers, we discuss a model in which quasar activity is tied to the self-regulated growth of supermassive black holes in galaxies. Nuclear inflow of gas attending a galaxy collision triggers a starburst and feeds black hole growth, but for most of the duration of the starburst, the black hole is heavily obscured by surrounding gas and dust which limits the visibility of the quasar, especially at optical and UV wavelengths. Eventually, feedback energy from accretion heats the gas and expels it in a powerful wind, leaving a 'dead quasar'. Between buried and dead phases there is a window during which the galaxy would be seen as a luminous quasar. Because the black hole mass, radiative output, and distribution of obscuring gas and dust all evolve strongly with time, the duration of this phase of observable quasar activity depends on both the waveband and imposed luminosity threshold. We determine the observed and intrinsic lifetimes as a function of luminosity and frequency, and calculate observable lifetimes ~10 Myr for bright quasars in the optical B-band, in good agreement with empirical estimates and much smaller than the black hole growth timescales ~100 Myr, naturally producing a substantial population of 'buried' quasars. However, observed and intrinsic energy outputs converge in the IR and hard X-ray bands as attenuation becomes weaker and chances of observation greatly increase. We obtain the distribution of column densities along sightlines in which the quasar is seen above a given luminosity, and find that our result agrees remarkably well with observed estimates of the column density distribution from the SDSS for appropriate luminosity thresholds. (Abridged)

  6. A comparison of black hole growth in galaxy mergers with Gasoline and Ramses

    E-Print Network [OSTI]

    Gabor, J M; Volonteri, Marta; Bournaud, Frédéric; Bellovary, Jillian; Governato, Fabio; Quinn, Thomas

    2015-01-01

    Supermassive black hole dynamics during galaxy mergers is crucial in determining the rate of black hole mergers and cosmic black hole growth. As simulations achieve higher resolution, it becomes important to assess whether the black hole dynamics is influenced by the treatment of the interstellar medium in different simulation codes. We here compare simulations of black hole growth in galaxy mergers with two codes: the Smoothed Particle Hydrodynamics code Gasoline, and the Adaptive Mesh Refinement code Ramses. We seek to identify predictions of these models that are robust despite differences in hydrodynamic methods and implementations of sub-grid physics. We find that the general behavior is consistent between codes. Black hole accretion is minimal while the galaxies are well-separated (and even as they "fly-by" within 10 kpc at first pericenter). At late stages, when the galaxies pass within a few kpc, tidal torques drive nuclear gas inflow that triggers bursts of black hole accretion accompanied by star fo...

  7. DISCOVERY OF A DISSOCIATIVE GALAXY CLUSTER MERGER WITH LARGE PHYSICAL SEPARATION

    SciTech Connect (OSTI)

    Dawson, William A.; Wittman, David; Jee, M. James; Gee, Perry; Tyson, J. Anthony; Schmidt, Samuel; Thorman, Paul; Bradac, Marusa; Lemaux, Brian [Department of Physics, University of California, Davis, One Shields Av., Davis, CA 95616 (United States); Hughes, John P. [Department of Physics and Astronomy, Rutgers University, 136 Frelinghuysen Road, Piscataway, NJ 08854-8019 (United States); Miyazaki, Satoshi; Utsumi, Yousuke [Department of Astronomical Science, The Graduate University for Advanced Studies, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan); Margoniner, Vera E., E-mail: wadawson@ucdavis.edu [Department of Physics and Astronomy, California State University, Sacramento, 6000 J Street Sacramento, CA 95819 (United States)

    2012-03-10

    We present DLSCL J0916.2+2951 (z = 0.53), a newly discovered major cluster merger in which the collisional cluster gas has become dissociated from the collisionless galaxies and dark matter (DM). We identified the cluster using optical and weak-lensing observations as part of the Deep Lens Survey. Our follow-up observations with Keck, Subaru, Hubble Space Telescope, and Chandra show that the cluster is a dissociative merger and constrain the DM self-interaction cross-section {sigma}{sub DM} m{sup -1}{sub DM} {approx}< 7 cm{sup 2} g{sup -1}. The system is observed at least 0.7 {+-} 0.2 Gyr since first pass-through, thus providing a picture of cluster mergers 2-5 times further progressed than similar systems observed to date. This improved temporal leverage has implications for our understanding of merging clusters and their impact on galaxy evolution.

  8. MERGER SYSTEM OPTIMIZATION IN BNL HIGH CURRENT R&D ERL

    SciTech Connect (OSTI)

    KAYRAN,D.; LITVINENKO, V.

    2007-06-25

    A super-conducting RF R&D Energy recovery linac (ERL) is under construction at Brookhaven National Laboratory (BNL). This ERL will be used as a test facility to study issues relevant to high-current, high-brightness beams. One of the goals is to demonstrate an electron beam with high charge per bunch ({approx}5 nC) and extremely low normalized emittance ({approx}5 mm-mrad) at an energy of 20 MeV. In contrast with operational high-brightness linear electron accelerators, all presently operating ERLs have order of magnitude larger emittances for the same charge per bunch. One reason for this emittance growth is that the merger system mixes transverse and longitudinal degrees of freedom, and consequently violates emittance compensation conditions. A merger system based on zigzag scheme resolves this problem. In this paper we discuss performance of the present design of the BNL R&D ERL injector with a zigzag merger.

  9. Spiral Disk Instability Can Drive Thermonuclear Explosions in Binary White Dwarf Mergers

    E-Print Network [OSTI]

    Kashyap, Rahul; García-Berro, Enrique; Aznar-Siguán, Gabriela; Ji, Suoqing; Lorén-Aguilar, Pablo

    2015-01-01

    Thermonuclear, or Type Ia supernovae (SNe Ia), originate from the explosion of carbon-oxygen white dwarfs, and serve as standardizable cosmological candles. However, despite their importance, the nature of the progenitor systems which give rise to SNe Ia has not been hitherto elucidated. Observational evidence favors the double-degenerate channel, in which merging white dwarf binaries lead to SNe Ia. Furthermore, significant discrepancies exist between observations and theory, and to date, there has been no self-consistent merger model which yields a SNe Ia. Here we show that a spiral mode instability in the accretion disk formed during a binary white dwarf merger leads to a detonation on a dynamical timescale. This mechanism sheds light on how white dwarf mergers may frequently yield SNe Ia.

  10. Realistic fission model and the r-process in neutron star mergers

    SciTech Connect (OSTI)

    Shibagaki, S.; Kajino, T. [Department of Astronomy, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan and National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan); Chiba, S. [Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo, 152-8850 (Japan); Mathews, G. J. [Center for Astrophysics, Department of Physics, University of Notre Dame, IN 46556, U.S.A. and National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan)

    2014-05-09

    About half of heavy elements are considered to be produced by the rapid neutron-capture process, r-process. The neutron star merger is one of the viable candidates for the astrophysical site of r-process nucleosynthesis. Nuclear fission reactions play an important role in the r-process of neutron star mergers. However theoretical predictions about fission properties of neutron-rich nuclei have some uncertainties. Especially, their fission fragment distributions are totally unknown and the phenomenologically extrapolated distribution was often applied to nucleosynthesis calculations. In this study, we have carried out r-process nucleosynthesis calculations based upon new theoretical estimates of fission fragment distributions. We discuss the effects on the r-process in neutron star mergers from the nuclear fission of heavy neutron-rich actinide elements. We also discuss how variations in the fission fragment distributions affect the abundance pattern.

  11. Practice Midterm.

    E-Print Network [OSTI]

    2006-10-12

    CS 3510. Practice Mid Term. Time: 1hrs 20 min. Write your name in the top left corner. Attempt all questions. You must show all work in order to obtain credit. 1.

  12. MIT and Automotive Industries MIT Industry Brief

    E-Print Network [OSTI]

    Herr, Hugh

    MIT and Automotive Industries MIT Industry Brief MIT's Industrial Liaison Program (ILP) can bring@ilp.mit.edu, or visit http://ilp.mit.edu. MIT and Automotive Industries The Massachusetts Institute of Technology (MIT) is a leading center of research and education on topics important to the automotive industry and its suppliers

  13. DEGREE PLAN BACHELOR OF SCIENCE IN INDUSTRIAL ENGINEERING

    E-Print Network [OSTI]

    Huang, Haiying

    DEGREE PLAN BACHELOR OF SCIENCE IN INDUSTRIAL ENGINEERING The University of Texas at Arlington Industrial Engineering Degree Plan, last updated 6/29/2012 Student Name: Catalog: 2013 Student ID: 1000 & Industrial Practices HIST 1311 3 Total Hrs. 3 HIST 1312 3 Total Hrs. 6 IE 1104 Introduction to Engineering 1

  14. Industry @ ALS

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of NaturalDukeWakefieldSulfateSciTechtail.Theory ofDid you notHeat Pumps Heat Pumpsfacility doe logoInIndustry @ ALS

  15. Industrial Permit

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformation CurrentHenry Bellamy,ImpactScientific andIndividualEvent Sign InIndustrial

  16. Industrial Users

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room NewsInformation CurrentHenry Bellamy,ImpactScientific andIndividualEvent SignIndustrial Users -

  17. Industry Economists

    Gasoline and Diesel Fuel Update (EIA)

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet) Wyoming Dry Natural GasNatural GasEIA lowerslong4,Guide toHighHowIndustry

  18. Problem and Preferred Management Practices Identification Workshop

    SciTech Connect (OSTI)

    Patchen, Douglas G.

    2003-03-10

    The goals for this workshop were: to introduce key players in the Appalachian basin oil industry to DOE's new Preferred Upstream Management Practices (PUMP) program; to explain the various elements of our two-year project in detail; to transfer technology through a series of short, invited talks; to identify technical problems and best management practices; and to recruit members for our Preferred Management Practices (PMP) Council.

  19. Dynamically Close Galaxy Pairs and Merger Rate Evolution in the CNOC2 Redshift Survey

    E-Print Network [OSTI]

    D. R. Patton; C. J. Pritchet; R. G. Carlberg; R. O. Marzke; H. K. C. Yee; P. B. Hall; H. Lin; S. L. Morris; M. Sawicki; C. W. Shepherd; G. D. Wirth

    2001-09-24

    We investigate redshift evolution in the galaxy merger and accretion rates, using a well-defined sample of 4184 galaxies with 0.12 < z < 0.55 and R_C < 21.5. We identify 88 galaxies in close (5 < r_p < 20 h^{-1} kpc) dynamical (delta v < 500 km/s) pairs. These galaxies are used to compute global pair statistics, after accounting for selection effects resulting from the flux limit, k-corrections, luminosity evolution, and spectroscopic incompleteness. We find that the number of companions per galaxy (for -21 < M_B^{k,e} < -18) is Nc = 0.0321 +/- 0.0077 at z=0.3. The luminosity in companions, per galaxy, is Lc = 0.0294 +/- 0.0084 x 10^10 h^2 L_sun. We assume that Nc is proportional to the galaxy merger rate, while Lc is directly related to the mass accretion rate. After increasing the maximum pair separation to 50 h^{-1} kpc, and comparing with the low redshift SSRS2 pairs sample, we infer evolution in the galaxy merger and accretion rates of (1+z)^{2.3 +/- 0.7} and (1+z)^{2.3 +/- 0.9} respectively. These are the first such estimates to be made using only confirmed dynamical pairs. When combined with several additional assumptions, this implies that approximately 15% of present epoch galaxies with -21 < M_B < -18 have undergone a major merger since z=1.

  20. Conclusions and outlook Akey question in astronomy is the interrelationship of mergers, starburst and AGN activ-

    E-Print Network [OSTI]

    Spoon, Henrik

    8 Conclusions and outlook Akey question in astronomy is the interrelationship of mergers, starburst of such objects. The main conclusions are summarized here and an outlook for future research is presented. The mid;144 CHAPTER 8: Conclusions and outlook tureless mid-infrared continuum. The spectrum closely resembles

  1. Spin Flips - II. Evolution of dark matter halo spin orientation, and its correlation with major mergers

    E-Print Network [OSTI]

    Bett, Philip E

    2015-01-01

    We expand our previous study on the relationship between changes in the orientation of the angular momentum vector of dark matter haloes ("spin flips") and changes in their mass (Bett & Frenk 2012), to cover the full range of halo masses in a simulation cube of length 100 $h^{-1}$ Mpc. Since strong disturbances to a halo (such as might be indicated by a large change in the spin direction) are likely also to disturb the galaxy evolving within, spin flips could be a mechanism for galaxy morphological transformation without involving major mergers. We find that 35% of haloes have, at some point in their lifetimes, had a spin flip of at least $45\\deg$ that does not coincide with a major merger. Over 75% of large spin flips coincide with non-major mergers; only a quarter coincide with major mergers. We find a similar picture for changes to the inner-halo spin orientation, although here there is an increased likelihood of a flip occurring. Changes in halo angular momentum orientation, and other such measures of...

  2. Short gamma-ray bursts from binary neutron star mergers in globular clusters

    E-Print Network [OSTI]

    Loss, Daniel

    ARTICLES Short gamma-ray bursts from binary neutron star mergers in globular clusters JONATHAN@cfa.harvard.edu Published online: 29 January 2006; doi:10.1038/nphys214 Observations by the Swift gamma-ray-burst (GRB, the so-called `long' GRBs (>2-200 s) were located by coded aperture imaging of their hard X-ray emission

  3. Constraints on binary neutron star merger product from short GRB observations

    E-Print Network [OSTI]

    Gao, He; Lü, Hou-Jun

    2015-01-01

    Binary neutron star mergers are strong gravitational wave (GW) sources and the leading candidates to interpret short duration gamma-ray bursts (SGRBs). Under the assumptions that SGRBs are produced by double neutron star mergers, we use the statistical observational properties of {\\em Swift} SGRBs and the mass distribution of Galactic double neutron star systems to place constraints on the neutron star equation of state (EoS) and the properties of the post-merger product. We show that current observations already put following tight constraints: 1) A neutron star EoS with a maximum mass close to a parameterization of $M_{\\rm max} = 2.37\\,M_\\odot (1+1.58\\times10^{-10} P^{-2.84})$ is favored; 2) The fractions for the several outcomes of NS-NS mergers are as follows: $\\sim40\\%$ prompt BHs, $\\sim30\\%$ supra-massive NSs that collapse to BHs in a range of delay time scales, and $\\sim30\\%$ stable NSs that never collapse; 3) The initial spin of the newly born supra-massive NSs should be near the breakup limit ($P_i\\s...

  4. Can galaxy growth be sustained through HI-rich minor mergers?

    E-Print Network [OSTI]

    Lehnert, M D; Minchin, R

    2015-01-01

    Local galaxies with specific star-formation rates (star-formation rate per unit mass; sSFR~0.2-10/Gyr) as high as distant galaxies (z~1-3), are very rich in HI. Those with low stellar masses, log M_star (M_sun)=8-9, for example, have M_HI/M_star~5-30. Using continuity arguments of Peng et al. (2014), whereby the specific merger rate is hypothesized to be proportional to the specific star-formation rate, and HI gas mass measurements for local galaxies with high sSFR, we estimate that moderate mass galaxies, log M_star (M_sun)=9-10.5, can acquire sufficient gas through minor mergers (stellar mass ratios ~4-100) to sustain their star formation rates at z~2. The relative fraction of the gas accreted through minor mergers declines with increasing stellar mass and for the most massive galaxies considered, log M_star (M_sun)=10.5-11, this accretion rate is insufficient to sustain their star formation. We checked our minor merger hypothesis at z=0 using the same methodology but now with relations for local normal gal...

  5. Best Practices

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room News PublicationsAudits & InspectionsBeryllium and ChronicBest Practices Best Practices The

  6. Best Practices

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room News PublicationsAudits & InspectionsBeryllium and ChronicBest Practices Best Practices The

  7. Introduction Actual Industrial Problems

    E-Print Network [OSTI]

    Nigam, Nilima

    Introduction Actual Industrial Problems What's needed? Is there really interesting mathematics in Industry? Can mathematicians contribute to society, and do we want to...? Nilima Nigam Department Mathematics in Industry #12;Introduction Actual Industrial Problems What's needed? Some controversial

  8. Mechanical & Industrial Engineering

    E-Print Network [OSTI]

    Mountziaris, T. J.

    Mechanical & Industrial Engineering 1 Welcome MIE Industrial Advisory Board October 15, 2010 #12;Mechanical & Industrial Engineering 2 MIE Dorothy Adams Undergraduate/Graduate Secretary David Schmidt Associate Professor & Graduate Program Director #12;Mechanical & Industrial Engineering 3 MIE James Rinderle

  9. The Relation Between Dry Vortex Merger and Tropical Cyclone Genesis over the Atlantic Ocean

    SciTech Connect (OSTI)

    Chen, Shu-Hua; Liu, Yi-Chin

    2014-10-27

    A strong, convective African tropical disturbance has a greater chance to develop into a Tropical 23 Depression (TD) if it merges with a shallow, dry vortex (D-vortex) from the north of the African 24 easterly jet (AEJ) after leaving the western coast. Using 11-year reanalysis data we found that the 25 western tip of a vortex strip at northwestern Africa can serve as dry vortices for the D-vortex 26 merger if it shifts southward. Another source of D-vortices is the westward propagating lows 27 along the southern edge of the Saharan air. The D-vortex merger process occurred for 63.5% of 28 tropical cyclones (TCs) or developing systems over the main development region of the Atlantic 29 Ocean, while it occurred for 54% of non-developing systems. TC genesis could be largely 30 controlled by the large-scale environment, but the differences in characteristics of vortices 31 associated with the D-vortex merger between developing and non-developing systems could 32 potentially help determine their destinies; in general, developing systems were dominated by a 33 more intense and moist south vortex, while non-developing systems were dominated by a north 34 vortex which was more intense, drier, and larger in size. Analysis also shows that 74% of intense 35 developing systems were involved with the D-vortex merger process. More attention needs to be 36 paid to the D-vortex merger and the characteristics of those vortices as they can play significant 37 roles or have a strong indication in Atlantic TC genesis.

  10. Engineering Industrial & Systems

    E-Print Network [OSTI]

    Berdichevsky, Victor

    Industrial Engineering Department of Industrial & Systems Engineering Leslie Monplaisir, Ph powerful tool sets used in industry today. -Brent Gillett, BSIE 2007 Advanced Planning Engineer at BMW I is available at: http://ise.wayne.edu/bs-industrial/index What is Industrial Engineering? The industrial

  11. A Survey of the U.S. ESCO Industry: Market Growth and Development from 2008 to 2011

    E-Print Network [OSTI]

    Satchwell, Andrew

    2010-01-01

    in recent years through buyouts and mergers, which may havein recent years through buyouts and mergers, which may have

  12. INDUSTRIAL ENGINEERING Industrial engineering is concerned

    E-Print Network [OSTI]

    INDUSTRIAL ENGINEERING Industrial engineering is concerned with looking at the "big picture" of systems that allow organizations and individuals to perform at their best. Industrial engineers bridge should be used and how they should be used. Industrial engineers design and run the factories and systems

  13. INDUSTRIAL ENGINEERING Industrial engineering is concerned

    E-Print Network [OSTI]

    INDUSTRIAL ENGINEERING Industrial engineering is concerned with looking at the "big picture" of systems that allow organizations and individuals to perform at their best. Industrial engineers bridge should be used and how they should be used. The focus of industrial engineering is on process improvement

  14. PROGRAMME SPECIFICATION UNDERGRADUATE PROGRAMMES Programme name Civil Engineering, Civil Engineering with Industrial

    E-Print Network [OSTI]

    Weyde, Tillman

    , Civil Engineering with Industrial Placement Award MEng (Hons) School School of Engineering that includes the Institution of Civil Engineers and the Institution of Structural Engineers. The industrial to the practice of engineering have had firsthand experience of current practice in the Civil Engineering industry

  15. Barriers to Industrial Energy Efficiency - Report to Congress, June 2015

    SciTech Connect (OSTI)

    2015-06-01

    This report examines barriers that impede the adoption of energy efficient technologies and practices in the industrial sector, and identifies successful examples and opportunities to overcome these barriers. Three groups of energy efficiency technologies and measures were examined: industrial end-use energy efficiency, industrial demand response, and industrial combined heat and power. This report also includes the estimated economic benefits from hypothetical Federal energy efficiency matching grants, as directed by the Act.

  16. Barriers to Industrial Energy Efficiency - Study (Appendix A), June 2015

    SciTech Connect (OSTI)

    2015-06-01

    This study examines barriers that impede the adoption of energy efficient technologies and practices in the industrial sector, and identifies successful examples and opportunities to overcome these barriers. Three groups of energy efficiency technologies and measures were examined: industrial end-use energy efficiency, industrial demand response, and industrial combined heat and power. This study also includes the estimated economic benefits from hypothetical Federal energy efficiency matching grants, as directed by the Act.

  17. Best Management Practices (BMPs) for Marinas and Small Boatyards

    E-Print Network [OSTI]

    #12;Best Management Practices (BMPs) for Marinas and Small Boatyards in British Columbia.C. #12;Best Management Practices (BMPs) for the Marinas and Small Boatyards in British Columbia August 30 management practices for the ship and boat building and repair industry in British Columbia: · Best

  18. The SQUARE-NURSE merger in Greater Manchester : the impact of social and spatial identity on phonological variation 

    E-Print Network [OSTI]

    Barras, William

    2006-01-01

    This study examines the SQUARE/NURSE merger in three neighbouring locations in Greater Manchester. Several approaches are used to provide explanations for the geographical patterns of variation that are observed. These ...

  19. Numerical simulations of neutron star mergers as the central engines of short-period gamma-ray bursts 

    E-Print Network [OSTI]

    Archibald, Richard Andrew

    2009-01-01

    We present the results of fully three dimensional, post-Newtonian hydrodynamical simulations of the dynamical evolution of mergers between compact stellar remnants (neutron stars and black holes). Although the code is ...

  20. Encouraging Industrial Demonstrations of Fuel Cell Applications 

    E-Print Network [OSTI]

    Anderson, J. M.

    1986-01-01

    INDUSTRIAL DEMONSTRATIONS OF FUEL CELL APPLICATIONS Joseph M~ Anderson, P.E. INDUSTRIAL FUEL CELL ASSOCIATION Lake Charles, Louisiana ABSTRACT Fuel Cell technology has advanced from a space-age curiosity to near commercial status within the last few... years. Both the electric and the gas utilities in the United States have conducted ambitious programs to oemonstrate the practicality of fuel cell power plants in a number of applications. The Japanese have been equally active in promoting a fuel...

  1. Energy Efficiency Best Practice Guide© 

    E-Print Network [OSTI]

    Rouse, S.

    2001-01-01

    rather than 'layer on' additional work. The Guide was developed from experience and lessons learned from: ? The Alliance to Save Energy's work on best practices; ? Ontario Power Generation's Energy Efficiency Program from 1994 to 2000; and ? A... lessons learned. Feedback from business units, project experience, and from other industrial leaders will be encouraged and sought after. Your thoughts and comments are appreciated - please email Scott Rouse at: srouse@OntarioPowerGeneration.com 1...

  2. Business Practices

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 OutreachProductswsicloudwsiclouddenDVA N C E D B L OBransen PlasmaEnergy,RecognizingBuildinggoBusinessPractices

  3. Effects of the microphysical Equation of State in the mergers of magnetized Neutron Stars With Neutrino Cooling

    E-Print Network [OSTI]

    C. Palenzuela; S. L. Liebling; D. Neilsen; L. Lehner; O. L. Caballero; E. O'Connor; M. Anderson

    2015-05-07

    We study the merger of binary neutron stars using different realistic, microphysical nuclear equations of state, as well as incorporating magnetic field and neutrino cooling effects. In particular, we concentrate on the influence of the equation of state on the gravitational wave signature and also on its role, in combination with cooling and electromagnetic effects, in determining the properties of the hypermassive neutron star resulting from the merger, the production of neutrinos, and the characteristics of ejecta from the system. The ejecta we find are consistent with other recent studies that find soft equations of state produce more ejecta than stiffer equations of state. Moreover, the degree of neutron richness increases for softer equations of state. In light of reported kilonova observations (associated to GRB~130603B and GRB~060614) and the discovery of relatively low abundances of heavy, radioactive elements in deep sea deposits (with respect to possible production via supernovae), we speculate that a soft EoS might be preferred---because of its significant production of sufficiently neutron rich ejecta---if such events are driven by binary neutron star mergers. We also find that realistic magnetic field strengths, obtained with a sub-grid model tuned to capture magnetic amplification via the Kelvin-Helmholtz instability at merger, are generally too weak to affect the gravitational wave signature post-merger within a time scale of $\\approx 10$~ms but can have subtle effects on the post-merger dynamics.

  4. Capturing the electromagnetic counterparts of binary neutron star mergers through low latency gravitational wave triggers

    E-Print Network [OSTI]

    Chu, Q; Rowlinson, A; Gao, H; Zhang, B; Tingay, S J; Boer, M; Wen, L

    2015-01-01

    We investigate the prospects for joint low-latency gravitational wave (GW) detection and prompt electromagnetic (EM) follow-up observations of coalescing binary neutron stars (BNSs). Assuming BNS mergers are associated with short duration gamma ray bursts (SGRBs), we evaluate if rapid EM follow-ups can capture the prompt emission, early engine activity or reveal any potential by-products such as magnetars or fast radio bursts. To examine the expected performance of low-latency search pipelines we simulate a population of coalescing BNSs using realistic distributions of source parameters to estimate the detectability and localisation efficiency at different times before merger. To determine what EM observations can be achieved, we consider a selection of facilities with GW follow-up agreements in place, from low-frequency radio to high energy $\\gamma$-ray; we assess the performance of each using observational SGRB flux data corrected to the range of the advanced GW interferometric detectors LIGO and Virgo. We ...

  5. The roles of ram-pressure stripping and minor mergers in evolution of galaxies

    E-Print Network [OSTI]

    Takashi Okamoto; Masahiro Nagashima

    2004-04-15

    We investigate environmental effects on evolution of bright cluster galaxies in a Lambda-dominated cold dark matter universe using a combination of dissipationless N-body simulations and a semi-analytic galaxy formation model. We incorporate effects of ram-pressure stripping (RPS) and minor merger-induced small starburst (minor burst) into our model. By considering minor burst, observed morphology-radius relation is successfully reproduced. When we do not consider minor burst, the RPS hardly increases the intermediate B/T population. In addition, the RPS and minor burst are not important for colours or star formation rates of galaxies in the cluster core if star formation time-scale is properly chosen, because the star formation is sufficiently suppressed by consumption of the cold gas. We also find that SF in bulge-dominated galaxies is mainly terminated by starburst induced by major mergers in all environments.

  6. Black hole mergers and blue stragglers from hierarchical triples formed in globular clusters

    E-Print Network [OSTI]

    Antonini, Fabio; Rodriguez, Carl L; Morscher, Meagan; Pattabiraman, Bharath; Kalogera, Vicky; Rasio, Frederic A

    2015-01-01

    Hierarchical triple-star systems are expected to form frequently via close binary-binary encounters in the dense cores of globular clusters. In a sufficiently inclined triple, gravitational interactions between the inner and outer binary can cause large-amplitude oscillations in the eccentricity of the inner orbit ("Lidov-Kozai cycles"), which can lead to a collision and merger of the two inner components. In this paper we use Monte Carlo models of dense star clusters to identify all triple systems formed dynamically and we compute their evolution using a highly accurate three-body integrator which incorporates relativistic and tidal effects. We find that a large fraction of these triples evolve through a non-secular dynamical phase which can drive the inner binary to higher eccentricities than predicted by the standard secular perturbation theory (even including octupole-order terms). We place constraints on the importance of Lidov-Kozai-induced mergers for producing: (i) gravitational wave sources detectabl...

  7. r-Process Nucleosynthesis in Hot Accretion Disk Flows from Black Hole - Neutron Star Mergers

    E-Print Network [OSTI]

    R. Surman; G. C. McLaughlin; M. Ruffert; H. -Th. Janka; W. R. Hix

    2008-06-25

    We consider hot accretion disk outflows from black hole - neutron star mergers in the context of the nucleosynthesis they produce. We begin with a three dimensional numerical model of a black hole - neutron star merger and calculate the neutrino and antineutrino fluxes emitted from the resulting accretion disk. We then follow the element synthesis in material outflowing the disk along parameterized trajectories. We find that at least a weak r-process is produced, and in some cases a main r-process as well. The neutron-rich conditions required for this production of r-process nuclei stem directly from the interactions of the neutrinos emitted by the disk with the free neutrons and protons in the outflow.

  8. Cluster-subcluster Mergers and the Formation of Narrow-angle Tailed Radio Sources

    E-Print Network [OSTI]

    M. Bliton; E. Rizza; J. O. Burns; F. N. Owen; M. J. Ledlow

    1998-11-01

    We have examined the ROSAT PSPC X-ray properties of a sample of 15 Abell clusters containing 23 narrow-angle tailed (NAT) radio galaxies. We find that clusters with NATs show a significantly higher level of substructure than a similar sample of radio-quiet clusters, indicating that NAT radio sources are preferentially located in dynamically complex systems. Also, the velocity distribution of the NAT galaxies is similar to that of other cluster members; these velocities are inadequate for producing the ram pressure necessary to bend the radio jets. We therefore propose a new model for NAT formation, in which NATs are associated with dynamically complex clusters undergoing merger events. The U-shaped NAT morphology is produced in part by the merger-induced bulk motion of the ICM bending the jets.

  9. Torus Formation in Neutron Star Mergers and Well-Localized Short Gamma-Ray Bursts

    E-Print Network [OSTI]

    R. Oechslin; H. -Th. Janka

    2006-02-22

    Merging neutron stars (NSs) are hot candidates for the still enigmatic sources of short gamma-ray bursts (GRBs). If the central engines of the huge energy release are accreting relic black holes (BHs) of such mergers, it is important to understand how the properties of the BH-torus systems, in particular disc masses and mass and rotation rate of the compact remnant, are linked to the characterizing parameters of the NS binaries. For this purpose we present relativistic smoothed particle hydrodynamics simulations with conformally flat approximation of the Einstein field equations and a physical, non-zero temperature equation of state. Thick disc formation is highlighted as a dynamical process caused by angular momentum transfer through tidal torques during the merging process of asymmetric systems or in the rapidly spinning triaxial post-merger object. Our simulations support the possibility that the first well-localized short and hard GRBs 050509b, 050709, 050724, 050813 have originated from NS merger events and are powered by neutrino-antineutrino annihilation around a relic BH-torus system. Using model parameters based on this assumption, we show that the measured GRB energies and durations lead to estimates for the accreted masses and BH mass accretion rates which are compatible with theoretical expectations. In particular, the low energy output and short duration of GRB 050509b set a very strict upper limit of less than 100 ms for the time interval after the merging until the merger remnant has collapsed to a BH, leaving an accretion torus with a small mass of only about 0.01 solar masses. This favors a (nearly) symmetric NS+NS binary with a typical mass as progenitor system.

  10. A CLOSE-PAIR ANALYSIS OF DAMP MERGERS AT INTERMEDIATE REDSHIFTS

    SciTech Connect (OSTI)

    Chou, Richard C. Y.; Abraham, Roberto G.; Bridge, Carrie R. E-mail: abraham@astro.utoronto.ca

    2012-12-01

    We have studied the kinematics of {approx}2800 candidate close-pair galaxies at 0.1 < z < 1.2 identified from the Canada-France-Hawaii Telescope Legacy Survey fields. Spectra of these systems were obtained using spectrometers on the 6.5 m Magellan and 5 m Hale telescopes. These data allow us to constrain the rate of dry mergers at intermediate redshifts and to test the 'hot halo' model for quenching of star formation. Using virial radii estimated from the correlation between dynamical and stellar masses published by Leauthaud et al., we find that around 1/5 of our candidate pairs are likely to share a common dark matter halo (our metric for close physical association). These pairs are divided into red-red, blue-red, and blue-blue systems using the rest-frame colors classification method introduced in Chou et al.. Galaxies classified as red in our sample have very low star formation rates, but they need not be totally quiescent, and hence we refer to them as 'damp', rather than 'dry', systems. After correcting for known selection effects, the fraction of blue-blue pairs is significantly greater than that of red-red and blue-red pairs. Red-red pairs are almost entirely absent from our sample, suggesting that damp mergers are rare at z {approx} 0.5. Our data support models with a short merging timescale (<0.5 Gyr) in which star formation is enhanced in the early phase of mergers, but quenched in the late phase. Hot halo models may explain this behavior, but only if virial shocks that heat gas are inefficient until major mergers are nearly complete.

  11. r-PROCESS NUCLEOSYNTHESIS IN DYNAMICALLY EJECTED MATTER OF NEUTRON STAR MERGERS

    SciTech Connect (OSTI)

    Goriely, Stephane [Institut d'Astronomie et d'Astrophysique, Universite Libre de Bruxelles, C.P. 226, B-1050 Brussels (Belgium); Bauswein, Andreas; Janka, Hans-Thomas [Max-Planck-Institut fuer Astrophysik, Postfach 1317, D-85741 Garching (Germany)

    2011-09-10

    Although the rapid neutron-capture process, or r-process, is fundamentally important for explaining the origin of approximately half of the stable nuclei with A > 60, the astrophysical site of this process has not been identified yet. Here we study r-process nucleosynthesis in material that is dynamically ejected by tidal and pressure forces during the merging of binary neutron stars (NSs) and within milliseconds afterward. For the first time we make use of relativistic hydrodynamical simulations of such events, defining consistently the conditions that determine the nucleosynthesis, i.e., neutron enrichment, entropy, early density evolution and thus expansion timescale, and ejecta mass. We find that 10{sup -3}-10{sup -2} M{sub sun} are ejected, which is enough for mergers to be the main source of heavy (A {approx}> 140) galactic r-nuclei for merger rates of some 10{sup -5} yr{sup -1}. While asymmetric mergers eject 2-3 times more mass than symmetric ones, the exact amount depends weakly on whether the NSs have radii of {approx}15 km for a 'stiff' nuclear equation of state (EOS) or {approx}12 km for a 'soft' EOS. r-process nucleosynthesis during the decompression becomes largely insensitive to the detailed conditions because of efficient fission recycling, producing a composition that closely follows the solar r-abundance distribution for nuclei with mass numbers A > 140. Estimating the light curve powered by the radioactive decay heating of r-process nuclei with an approximative model, we expect high emission in the B-V-R bands for 1-2 days with potentially observable longer duration in the case of asymmetric mergers because of the larger ejecta mass.

  12. Results From the Industrial Assessment Center (IAC) Steam Tool Benchmarking Support Project 

    E-Print Network [OSTI]

    Wright, A. L.; Bassett, K.; Eckerlin, H.; Ganji, A.; Hengeveld, D.; Jendrucko, R.; Kosanovic, D.; Turner, W.

    2002-01-01

    The U. S. Department of Energy's (DOE) Office of Industrial Technology (OIT) BestPractices effort is developing a number of software tools to assist industrial energy users to improve the efficiency of their operations. One of the software tools...

  13. Dynamically Close Galaxy Pairs and Merger Rate Evolution in the CNOC2 Redshift Survey

    E-Print Network [OSTI]

    Patton, D R; Carlberg, R G; Marzke, R O; Yee, H K C; Hall, P B; Lin, H; Morris, S L; Sawicki, M; Shepherd, C W; Wirth, G D

    2001-01-01

    We investigate redshift evolution in the galaxy merger and accretion rates, using a well-defined sample of 4184 galaxies with 0.12 < z < 0.55 and R_C < 21.5. We identify 88 galaxies in close (5 < r_p < 20 h^{-1} kpc) dynamical (delta v < 500 km/s) pairs. These galaxies are used to compute global pair statistics, after accounting for selection effects resulting from the flux limit, k-corrections, luminosity evolution, and spectroscopic incompleteness. We find that the number of companions per galaxy (for -21 < M_B^{k,e} < -18) is Nc = 0.0321 +/- 0.0077 at z=0.3. The luminosity in companions, per galaxy, is Lc = 0.0294 +/- 0.0084 x 10^10 h^2 L_sun. We assume that Nc is proportional to the galaxy merger rate, while Lc is directly related to the mass accretion rate. After increasing the maximum pair separation to 50 h^{-1} kpc, and comparing with the low redshift SSRS2 pairs sample, we infer evolution in the galaxy merger and accretion rates of (1+z)^{2.3 +/- 0.7} and (1+z)^{2.3 +/- 0.9} r...

  14. Flash Galaxy Cluster Merger, Simulated using the Flash Code, Mass Ratio 1:1

    ScienceCinema (OSTI)

    None

    2013-04-19

    Since structure in the universe forms in a bottom-up fashion, with smaller structures merging to form larger ones, modeling the merging process in detail is crucial to our understanding of cosmology. At the current epoch, we observe clusters of galaxies undergoing mergers. It is seen that the two major components of galaxy clusters, the hot intracluster gas and the dark matter, behave very differently during the course of a merger. Using the N-body and hydrodynamics capabilities in the FLASH code, we have simulated a suite of representative galaxy cluster mergers, including the dynamics of both the dark matter, which is collisionless, and the gas, which has the properties of a fluid. 3-D visualizations such as these demonstrate clearly the different behavior of these two components over time. Credits: Science: John Zuhone (Harvard-Smithsonian Center for Astrophysics Visualization: Jonathan Gallagher (Flash Center, University of Chicago)?? This research used resources of the Argonne Leadership Computing Facility at Argonne National Laboratory, which is supported by the Office of Science of the U.S. Dept. of Energy (DOE) under contract DE-AC02-06CH11357. This research was supported by the National Nuclear Security Administration's (NNSA) Advanced Simulation and Computing (ASC) Academic Strategic Alliance Program (ASAP).

  15. Was the nineteenth century giant eruption of Eta Carinae a merger event in a triple system?

    E-Print Network [OSTI]

    Zwart, Simon Portegies

    2015-01-01

    We discuss the events that led to the giant eruption of Eta Carinae, and find that the mid-nineteenth century (in 1838-1843) giant mass-loss outburst has the characteristics of being produced by the merger event of a massive close binary, triggered by the gravitational interaction with a massive third companion star, which is the current binary companion in the Eta Carinae system. We come to this conclusion by a combination of theoretical arguments supported by computer simulations using the Astrophysical Multipurpose Software Environment. According to this model the $\\sim 90$\\,\\MSun\\, present primary star of the highly eccentric Eta Carinae binary system is the product of this merger, and its $\\sim 30$\\,\\MSun\\, companion originally was the third star in the system. In our model the Homunculus nebula was produced by an extremely enhanced stellar wind, energized by tidal energy dissipation prior to the merger, which enormously boosted the radiation-driven wind mass-loss. The current orbital plane is then align...

  16. NUCLEOSYNTHESIS CONSTRAINTS ON THE NEUTRON STAR-BLACK HOLE MERGER RATE

    SciTech Connect (OSTI)

    Bauswein, A. [Department of Physics, Aristotle University of Thessaloniki, GR-54124 Thessaloniki (Greece); Ardevol Pulpillo, R.; Janka, H.-T. [Max Planck Institute for Astrophysics, Karl-Schwarzschild-Str. 1, D-85748 Garching (Germany); Goriely, S., E-mail: bauswein@MPA-Garching.MPG.DE [Institut d'Astronomie et d'Astrophysique, Université Libre de Bruxelles, C.P. 226, B-1050 Brussels (Belgium)

    2014-11-01

    We derive constraints on the time-averaged event rate of neutron star-black hole (NS-BH) mergers by using estimates of the population-integrated production of heavy rapid neutron-capture (r-process) elements with nuclear mass numbers A > 140 by such events in comparison to the Galactic repository of these chemical species. Our estimates are based on relativistic hydrodynamical simulations convolved with theoretical predictions of the binary population. This allows us to determine a strict upper limit of the average NS-BH merger rate of ?6× 10{sup –5} per year. We quantify the uncertainties of this estimate to be within factors of a few mostly because of the unknown BH spin distribution of such systems, the uncertain equation of state of NS matter, and possible errors in the Galactic content of r-process material. Our approach implies a correlation between the merger rates of NS-BH binaries and of double NS systems. Predictions of the detection rate of gravitational-wave signals from such compact object binaries by Advanced LIGO and Advanced Virgo on the optimistic side are incompatible with the constraints set by our analysis.

  17. Dynamical interactions and the black-hole merger rate of the Universe

    SciTech Connect (OSTI)

    O'Leary, Ryan M.; O'Shaughnessy, Richard; Rasio, Frederic A. [Harvard-Smithsonian Center for Astrophysics, 60 Garden Street, Cambridge, Massachusetts 02138 (United States); Northwestern University, Department of Physics and Astronomy, 2132 Tech Drive, Evanston, Illinois 60208 (United States)

    2007-09-15

    Binary black holes can form efficiently in dense young stellar clusters, such as the progenitors of globular clusters, via a combination of gravitational segregation and cluster evaporation. We use simple analytic arguments supported by detailed N-body simulations to determine how frequently black holes born in a single stellar cluster should form binaries, be ejected from the cluster, and merge through the emission of gravitational radiation. We then convolve this 'transfer function' relating cluster formation to black-hole mergers with (i) the distribution of observed cluster masses and (ii) the star formation history of the Universe, assuming that a significant fraction g{sub cl} of star formation occurs in clusters and that a significant fraction g{sub evap} of clusters undergo this segregation and evaporation process. We predict future ground-based gravitational wave detectors could observe {approx}500(g{sub cl}/0.5)(g{sub evap}/0.1) double black-hole mergers per year, and the presently operating LIGO interferometer would have a chance (50%) at detecting a merger during its first full year of science data. More realistically, advanced LIGO and similar next-generation gravitational wave observatories provide unique opportunities to constrain otherwise inaccessible properties of clusters formed in the early Universe.

  18. Type Ia supernovae from merging white dwarfs. II. Post-merger detonations

    SciTech Connect (OSTI)

    Raskin, Cody; Kasen, Daniel [Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, CA (United States); Moll, Rainer; Woosley, Stan [Department of Physics and Department of Astronomy, University of California, Santa Cruz, CA (United States); Schwab, Josiah [Department of Physics and Department of Astronomy, University of California, Berkeley, CA (United States)

    2014-06-10

    Merging carbon-oxygen (CO) white dwarfs are a promising progenitor system for Type Ia supernovae (SNe Ia), but the underlying physics and timing of the detonation are still debated. If an explosion occurs after the secondary star is fully disrupted, the exploding primary will expand into a dense CO medium that may still have a disk-like structure. This interaction will decelerate and distort the ejecta. Here we carry out multidimensional simulations of 'tamped' SN Ia models, using both particle and grid-based codes to study the merger and explosion dynamics and a radiative transfer code to calculate synthetic spectra and light curves. We find that post-merger explosions exhibit an hourglass-shaped asymmetry, leading to strong variations in the light curves with viewing angle. The two most important factors affecting the outcome are the scale height of the disk, which depends sensitively on the binary mass ratio, and the total {sup 56}Ni yield, which is governed by the central density of the remnant core. The synthetic broadband light curves rise and decline very slowly, and the spectra generally look peculiar, with weak features from intermediate mass elements but relatively strong carbon absorption. We also consider the effects of the viscous evolution of the remnant and show that a longer time delay between merger and explosion probably leads to larger {sup 56}Ni yields and more symmetrical remnants. We discuss the relevance of this class of aspherical 'tamped' SN Ia for explaining the class of 'super-Chandrasekhar' SN Ia.

  19. Chemical Signature of a Major Merger in the Early Formation of Small Magellanic Cloud

    E-Print Network [OSTI]

    Tsujimoto, Takuji

    2009-01-01

    The formation history of the Small Magellanic cloud (SMC) is unraveled based on the results of our new chemical evolution models constructed for the SMC, highlighting the observed anomaly in the age-metallicity relation for star clusters in the SMC. We first propose that evidence of a major merger is imprinted in the age-metallicity relation as a dip in [Fe/H]. Our models predict that the major merger with a mass ratio of 1:1 to 1:4 occurred at ~7.5 Gyr ago, with a good reproduction of the abundance distribution function of field stars in the SMC. Furthermore, our models predict a relatively large scatter in [Mg/Fe] for -1.4 < [Fe/H] <-1.1 as a reflection of a looping feature resulting from the temporally inverse progress of chemical enrichment, which can be tested against future observational results. Given that the observed velocity dispersion (~30 km/s) of the SMC is much smaller than that (~160 km/s) of the Galactic halo, our finding strongly implies that the predicted merger event happened in a sma...

  20. Production of all the r-process nuclides in the dynamical ejecta of neutron star mergers

    E-Print Network [OSTI]

    Wanajo, Shinya; Nishimura, Nobuya; Kiuchi, Kenta; Kyutoku, Koutarou; Shibata, Masaru

    2014-01-01

    Recent studies suggest that binary neutron star (NS-NS) mergers robustly produce the heavy r-process nuclei above the atomic mass number of A ~ 130 because of their ejecta consisting of almost pure neutrons (electron fraction of Y_e << 0.1). This conflicts, however, with the so-called ``universality' of the (solar-like) r-process pattern evidenced by spectroscopic analyses of Galactic halo stars. We present, for the first time, the result of nucleosynthesis calculations based on the fully general-relativistic simulation of a NS-NS merger with approximate neutrino transport. It is found that the bulk of the dynamical ejecta are appreciably shock-heated and neutrino-processed, resulting in a wide range of Y_e (= 0.09-0.45). The mass-averaged abundance distribution of calculated nucleosynthesis yields is in remarkable agreement with the full-mass range (A = 90-240) of the solar r-process curve. This implies, if our model is representative of such events, that the dynamical ejecta of NS-NS mergers can be th...

  1. Supermassive Black Hole Growth and Merger Rates from Cosmological N-body Simulations

    E-Print Network [OSTI]

    Miroslav Micic; Kelly Holley-Bockelmann; Steinn Sigurdsson; Tom Abel

    2007-03-20

    Understanding how seed black holes grow into intermediate and supermassive black holes (IMBHs and SMBHs, respectively) has important implications for the duty-cycle of active galactic nuclei (AGN), galaxy evolution, and gravitational wave astronomy. Most studies of the cosmological growth and merger history of black holes have used semianalytic models and have concentrated on SMBH growth in luminous galaxies. Using high resolution cosmological N-body simulations, we track the assembly of black holes over a large range of final masses -- from seed black holes to SMBHs -- over widely varying dynamical histories. We used the dynamics of dark matter halos to track the evolution of seed black holes in three different gas accretion scenarios. We have found that growth of Sagittarius A* - size SMBH reaches its maximum mass M_{SMBH}~10^6Msun at z~6 through early gaseous accretion episodes, after which it stays at near constant mass. At the same redshift, the duty-cycle of the host AGN ends, hence redshift z=6 marks the transition from an AGN to a starburst galaxy which eventually becomes the Milky Way. By tracking black hole growth as a function of time and mass, we estimate that the IMBH merger rate reaches a maximum of R_{max}=55 yr^-1 at z=11. From IMBH merger rates we calculate N_{ULX}=7 per Milky Way type galaxy per redshift in redshift range 2

  2. Mass Deficits, Stalling Radii, and the Merger Histories of Elliptical Galaxies

    E-Print Network [OSTI]

    David Merritt

    2007-06-13

    A binary supermassive black hole leaves an imprint on a galactic nucleus in the form of a "mass deficit," a decrease in the mass of the nucleus due to ejection of stars by the binary. The magnitude of the mass deficit is in principle related to the galaxy's merger history, but the relation has never been quantified. Here, high-accuracy N-body simulations are used to calibrate this relation. Mass deficits are shown to be approximately 0.5M_{12}, with M_{12} the total mass of the binary; the coefficient in this relation depends only weakly on the binary mass ratio or on the galaxy's pre-existing density profile. Hence, after N mergers, the mass deficit is ~0.5 N M_h with M_h the final (current) black hole mass. When compared with observed mass deficits, this result implies between 1 and 3 mergers for most galaxies, in accord with hierarchical galaxy formation models. Implications for binary stalling radii, the origin of hyper-velocity stars, and the distribution of dark matter at the centers of galaxies are discussed.

  3. Short gamma-ray bursts from binary neutron star mergers: the time-reversal scenario

    E-Print Network [OSTI]

    Riccardo Ciolfi; Daniel M. Siegel

    2015-05-06

    After decades of observations the physical mechanisms that generate short gamma-ray bursts (SGRBs) still remain unclear. Observational evidence provides support to the idea that SGRBs originate from the merger of compact binaries, consisting of two neutron stars (NSs) or a NS and a black hole (BH). Theoretical models and numerical simulations seem to converge to an explanation in which the central engine of SGRBs is given by a spinning BH surrounded by a hot accretion torus. Such a BH-torus system can be formed in compact binary mergers and is able to launch a relativistic jet, which can then produce the SGRB. This basic scenario, however, has recently been challenged by Swift satellite observations, which have revealed long-lasting X-ray afterglows in association with a large fraction of SGRB events. The long durations of these afterglows (from minutes to several hours) cannot be explained by the $\\sim\\text{s}$ accretion timescale of the torus onto the BH, and, instead, suggest a long-lived NS as the persistent source of radiation. Yet, if the merger results in a massive NS the conditions to generate a relativistic jet and thus the prompt SGRB emission are hardly met. Here we consider an alternative scenario that can reconcile the two aspects and account for both the prompt and the X-ray afterglow emission. Implications for future observations, multi-messenger astronomy and for constraining NS properties are discussed, as well as potential challenges for the model.

  4. CHEMICAL SIGNATURE OF A MAJOR MERGER IN THE EARLY FORMATION OF THE SMALL MAGELLANIC CLOUD

    SciTech Connect (OSTI)

    Tsujimoto, Takuji [National Astronomical Observatory, Mitaka-shi, Tokyo 181-8588 (Japan); Bekki, Kenji [School of Physics, University of New South Wales, Sydney 2052, NSW (Australia)], E-mail: taku.tsujimoto@nao.ac.jp

    2009-08-01

    The formation history of the Small Magellanic Cloud (SMC) is unraveled based on the results of our new chemical evolution models constructed for the SMC, highlighting the observed anomaly in the age-metallicity relation for star clusters in the SMC. We first propose that evidence of a major merger is imprinted in the age-metallicity relation as a dip in [Fe/H]. Our models predict that the major merger with a mass ratio of 1:1 to 1:4 occurred at {approx}7.5 Gyr ago, with a good reproduction of the abundance distribution function of field stars in the SMC. Furthermore, our models predict a relatively large scatter in [Mg/Fe] for -1.4 {<=} [Fe/H] {<=} -1.1 as a reflection of a looping feature resulting from the temporally inverse progress of chemical enrichment, which can be tested against future observational results. Given that the observed velocity dispersion ({approx}30 km s{sup -1}) of the SMC is much smaller than that ({approx}160 km s{sup -1}) of the Galactic halo, our finding strongly implies that the predicted merger event happened in a small group environment that was far from the Galaxy and contained a number of small gas-rich dwarfs comparable to the SMC. This theoretical view is extensively discussed in the framework that considers a connection with the formation history of the Large Magellanic Cloud.

  5. Mechanical, Industrial & Manufacturing

    E-Print Network [OSTI]

    Balasubramanian, Ravi

    Mechanical, Industrial & Manufacturing Engineering (MIME) COLLEGE OF ENGINEERING FY2013 Oregon graduate degrees (MS, MEng, PhD) in mechanical engineering, industrial engineering, and materials science. We offer bachelor's degrees in mechanical, industrial, manufacturing, and energy systems engineering

  6. Chemicals Industry Vision

    SciTech Connect (OSTI)

    none,

    1996-12-01

    Chemical industry leaders articulated a long-term vision for the industry, its markets, and its technology in the groundbreaking 1996 document Technology Vision 2020 - The U.S. Chemical Industry. (PDF 310 KB).

  7. Industrial and Systems engineering

    E-Print Network [OSTI]

    Berdichevsky, Victor

    Industrial and Systems engineering COLLEGE of ENGINEERING DepartmentofIndustrialandSystemsEngineering EDGE Engineering Entrepreneur Certificate Program is a great addition to an industrial and systems to expert clinical recommendations. engineering.wayne.edu/isefaculty Industrial and systems engineering

  8. Electric Utility Industry Update

    Broader source: Energy.gov [DOE]

    Presentation—given at the April 2012 Federal Utility Partnership Working Group (FUPWG) meeting—covers significant electric industry trends and industry priorities with federal customers.

  9. Uranium industry annual 1997

    SciTech Connect (OSTI)

    NONE

    1998-04-01

    This report provides statistical data on the U.S. uranium industry`s activities relating to uranium raw materials and uranium marketing.

  10. Industry Analysis February 2013

    E-Print Network [OSTI]

    Fletcher, Robin

    -Industries · Biodiesel ­ Biofuel ­ Alternate fuels ­ Green fuels ­ Renewable fuels/energy ­ Green energy ­ Green) · Business Source Complete - Company, market, industry news and articles · CBCA and Canadian Newsstand

  11. Chemical Industry Corrosion Management

    SciTech Connect (OSTI)

    2003-02-01

    Improved Corrosion Management Could Provide Significant Cost and Energy Savings for the Chemical Industry. In the chemical industry, corrosion is often responsible for significant shutdown and maintenance costs.

  12. SYSTEMATICS OF DYNAMICAL MASS EJECTION, NUCLEOSYNTHESIS, AND RADIOACTIVELY POWERED ELECTROMAGNETIC SIGNALS FROM NEUTRON-STAR MERGERS

    SciTech Connect (OSTI)

    Bauswein, A.; Janka, H.-T. [Max Planck Institute for Astrophysics, Karl-Schwarzschild-Str. 1, D-85748 Garching (Germany); Goriely, S. [Institut d'Astronomie et d'Astrophysique, Universite Libre de Bruxelles, C.P. 226, B-1050 Brussels (Belgium)

    2013-08-10

    We investigate systematically the dynamical mass ejection, r-process nucleosynthesis, and properties of electromagnetic counterparts of neutron-star (NS) mergers in dependence on the uncertain properties of the nuclear equation of state (EOS) by employing 40 representative, microphysical high-density EOSs in relativistic, hydrodynamical simulations. The crucial parameter determining the ejecta mass is the radius R{sub 1.35} of a 1.35 M{sub Sun} NS. NSs with smaller R{sub 1.35} (''soft'' EOS) eject systematically higher masses. These range from {approx}10{sup -3} M{sub Sun} to {approx}10{sup -2} M{sub Sun} for 1.35-1.35 M{sub Sun} binaries and from {approx}5 Multiplication-Sign 10{sup -3} M{sub Sun} to {approx}2 Multiplication-Sign 10{sup -2} M{sub Sun} for 1.2-1.5 M{sub Sun} systems (with kinetic energies between {approx}5 Multiplication-Sign 10{sup 49} erg and 10{sup 51} erg). Correspondingly, the bolometric peak luminosities of the optical transients of symmetric (asymmetric) mergers vary between 3 Multiplication-Sign 10{sup 41} erg s{sup -1} and 14 Multiplication-Sign 10{sup 41} erg s{sup -1} (9 Multiplication-Sign 10{sup 41} erg s{sup -1} and 14.5 Multiplication-Sign 10{sup 41} erg s{sup -1}) on timescales between {approx}2 hr and {approx}12 hr. If these signals with absolute bolometric magnitudes from -15.0 to -16.7 are measured, the tight correlation of their properties with those of the merging NSs might provide valuable constraints on the high-density EOS. The r-process nucleosynthesis exhibits a remarkable robustness independent of the EOS, producing a nearly solar abundance pattern above mass number 130. By the r-process content of the Galaxy and the average production per event the Galactic merger rate is limited to 4 Multiplication-Sign 10{sup -5} yr{sup -1} (4 Multiplication-Sign 10{sup -4} yr{sup -1}) for a soft (stiff) NS EOS, if NS mergers are the main source of heavy r-nuclei. The production ratio of radioactive {sup 232}Th to {sup 238}U attains a stable value of 1.64-1.67, which does not exclude NS mergers as potential sources of heavy r-material in the most metal-poor stars.

  13. Mechanical & Industrial Engineering

    E-Print Network [OSTI]

    Mountziaris, T. J.

    Mechanical & Industrial Engineering 1 Welcome MIE Industrial Advisory Board May 5th, 2011 #12;Mechanical & Industrial Engineering 2 IAB 2010-2011 · David K. Anderson ­ Alden Research Laboratory, Inc went on for three weeks Mechanical & Industrial Engineering 6 #12;Reza Shahbazian Yassar Mechanical

  14. INDUSTRIAL ENGINEERING GRADUATE PROGRAMS

    E-Print Network [OSTI]

    Gelfond, Michael

    INDUSTRIAL ENGINEERING GRADUATE PROGRAMS The Master of Science in Industrial Engineering (M Systems and Engineering (M.S.M.S.E.), the Doctor of Philosophy in Industrial Engineering, and the Doctor of Philosophy in Systems and Engineering Management programs prepare competent industrial engineers

  15. Industry Analysis October 2010

    E-Print Network [OSTI]

    Abolmaesumi, Purang

    Industry and Company research ­ they build on each other #12;Industry Studies Standard & Poor's Net of competitors Standard & Poor's NetAdvantage - See 'Industry Surveys' under the "Quick Links" #12;Where Common technologies are there industry standards, platforms manufacturing processes, outsourcing? #12

  16. Developing Best Practices for Small and Very Small Pork Processing Plants to Improve Food Safety 

    E-Print Network [OSTI]

    Hendricks, Matthew Benton

    2013-05-10

    Best practices have previously been developed for beef slaughter and further processing operations with input from academic and industry leaders. Best practices for pork processors have not been developed, and those developed ...

  17. Pollution prevention in electroplating industries

    SciTech Connect (OSTI)

    Altmayer, F. [Scientific Control Labs., Inc., Chicago, IL (United States)

    1995-09-01

    The electroplating industry utilizes numerous recovery-and-recycle techniques to return a portion or all of the process chemical to the origin. The most commonly practiced pollution prevention option in electroplating is the utilization of drag-out rinses. The typical plater will first evaluate the efficacy of drag-out rinsing; will determine if a viable, less polluting or nonpolluting substitute exists; and will make those changes before investing in recovery-and-recycle equipment. This chapter focuses on the equipment and chemical processes available for a pollution prevention program in electroplating.

  18. The US textile industry: An energy perspective

    SciTech Connect (OSTI)

    Badin, J. S.; Lowitt, H. E.

    1988-01-01

    This report investigates the state of the US textile industry in terms of energy consumption and conservation. Specific objectives were: To update and verify energy and materials consumption data at the various process levels in 1984; to determine the potential energy savings attainable with current (1984), state-of-the-art, and future production practices and technologies (2010); and to identify new areas of research and development opportunity that will enable these potential future savings to be achieved. Results of this study concluded that in the year 2010, there is a potential to save between 34% and 53% of the energy used in current production practices, dependent on the projected technology mix. RandD needs and opportunities were identified for the industry in three categories: process modification, basic research, and improved housekeeping practices that reduce energy consumption. Potential RandD candidates for DOE involvement with the private sector were assessed and selected from the identified list.

  19. Theoretical/best practice energy use in metalcasting operations

    SciTech Connect (OSTI)

    Schifo, J. F.; Radia, J. T.

    2004-05-01

    This study determined the theoretical minimum energy requirements for melting processes for all ferrous and noferrous engenieering alloys. Also the report details the Best Practice energy consumption for the industry.

  20. The Role of the Consultant in Marketing Industrial Heat Pumps 

    E-Print Network [OSTI]

    Gilbert, J. S.; Niess, R. C.

    1987-01-01

    OF THE CONSULTANT IN MARKETING INDUSTRIAL HEAT PUMPS Joel S. Gilbert & Richard C. Niess Dames & Moore, Bethesda, Maryland ABSTRACT This paper explores the role that a consultant can play in the acceptance of applied heat pumps by industry (the key word... is "industry?). Unfor tunately, there are very few engineers in practice today with expertise in this specialized area of energy conservation technology. In this discussion, we will define the indus trial heat pump, review experience and training...

  1. Black hole mergers and blue stragglers from hierarchical triples formed in globular clusters

    E-Print Network [OSTI]

    Fabio Antonini; Sourav Chatterjee; Carl L. Rodriguez; Meagan Morscher; Bharath Pattabiraman; Vicky Kalogera; Frederic A. Rasio

    2015-09-16

    Hierarchical triple-star systems are expected to form frequently via close binary-binary encounters in the dense cores of globular clusters. In a sufficiently inclined triple, gravitational interactions between the inner and outer binary can cause large-amplitude oscillations in the eccentricity of the inner orbit ("Lidov-Kozai cycles"), which can lead to a collision and merger of the two inner components. In this paper we use Monte Carlo models of dense star clusters to identify all triple systems formed dynamically and we compute their evolution using a highly accurate three-body integrator which incorporates relativistic and tidal effects. We find that a large fraction of these triples evolve through a non-secular dynamical phase which can drive the inner binary to higher eccentricities than predicted by the standard secular perturbation theory (even including octupole-order terms). We place constraints on the importance of Lidov-Kozai-induced mergers for producing: (i) gravitational wave sources detectable by Advanced LIGO (aLIGO), for triples with an inner pair of stellar black holes; and (ii) blue straggler stars, for triples with main-sequence-star components. We find a realistic aLIGO detection rate of black hole mergers due to the Lidov-Kozai mechanism of 2yr^-1, with about 20% of these having a finite eccentricity when they first chirp into the aLIGO frequency band. While rare, these events are likely to dominate among eccentric compact object inspirals that are potentially detectable by aLIGO. For blue stragglers, we find that the Lidov-Kozai mechanism can contribute up to ~10% of their total numbers in globular clusters. In clusters with low central densities, ~10^{3}-10^{4} M_Sun pc^-3, up to ~40% of binary blue stragglers could have formed in dynamically assembled triples.

  2. PRODUCTION OF ALL THE r-PROCESS NUCLIDES IN THE DYNAMICAL EJECTA OF NEUTRON STAR MERGERS

    SciTech Connect (OSTI)

    Wanajo, Shinya; Sekiguchi, Yuichiro; Kiuchi, Kenta; Shibata, Masaru; Nishimura, Nobuya; Kyutoku, Koutarou

    2014-07-10

    Recent studies suggest that binary neutron star (NS-NS) mergers robustly produce heavy r-process nuclei above the atomic mass number A ? 130 because their ejecta consist of almost pure neutrons (electron fraction of Y {sub e} < 0.1). However, the production of a small amount of the lighter r-process nuclei (A ? 90-120) conflicts with the spectroscopic results of r-process-enhanced Galactic halo stars. We present, for the first time, the result of nucleosynthesis calculations based on the fully general relativistic simulation of a NS-NS merger with approximate neutrino transport. It is found that the bulk of the dynamical ejecta are appreciably shock-heated and neutrino processed, resulting in a wide range of Y {sub e} (?0.09-0.45). The mass-averaged abundance distribution of calculated nucleosynthesis yields is in reasonable agreement with the full-mass range (A ? 90-240) of the solar r-process curve. This implies, if our model is representative of such events, that the dynamical ejecta of NS-NS mergers could be the origin of the Galactic r-process nuclei. Our result also shows that radioactive heating after ?1 day from the merging, which gives rise to r-process-powered transient emission, is dominated by the ?-decays of several species close to stability with precisely measured half-lives. This implies that the total radioactive heating rate for such an event can be well constrained within about a factor of two if the ejected material has a solar-like r-process pattern.

  3. Post-merger evolution of a neutron star-black hole binary with neutrino transport

    E-Print Network [OSTI]

    Francois Foucart; Evan O'Connor; Luke Roberts; Matthew D. Duez; Roland Haas; Lawrence E. Kidder; Christian D. Ott; Harald P. Pfeiffer; Mark A. Scheel; Bela Szilagyi

    2015-02-13

    We present a first simulation of the post-merger evolution of a black hole-neutron star binary in full general relativity using an energy-integrated general relativistic truncated moment formalism for neutrino transport. We describe our implementation of the moment formalism and important tests of our code, before studying the formation phase of a disk after a black hole-neutron star merger. We use as initial data an existing general relativistic simulation of the merger of a neutron star of 1.4 solar mass with a black hole of 7 solar mass and dimensionless spin a/M=0.8. Comparing with a simpler leakage scheme for the treatment of the neutrinos, we find noticeable differences in the neutron to proton ratio in and around the disk, and in the neutrino luminosity. We find that the electron neutrino luminosity is much lower in the transport simulations, and that the remnant is less neutron-rich. The spatial distribution of the neutrinos is significantly affected by relativistic effects. Over the short timescale evolved, we do not observe purely neutrino-driven outflows. However, a small amount of material (3e-4Msun) is ejected in the polar region during the circularization of the disk. Most of that material is ejected early in the formation of the disk, and is fairly neutron rich. Through r-process nucleosynthesis, that material should produce high-opacity lanthanides in the polar region, and could thus affect the lightcurve of radioactively powered electromagnetic transients. We also show that by the end of the simulation, while the bulk of the disk is neutron-rich, its outer layers have a higher electron fraction. As that material would be the first to be unbound by disk outflows on longer timescales, the changes in Ye experienced during the formation of the disk could have an impact on the nucleosynthesis outputs from neutrino-driven and viscously-driven outflows. [Abridged

  4. Black hole mergers and blue stragglers from hierarchical triples formed in globular clusters

    E-Print Network [OSTI]

    Fabio Antonini; Sourav Chatterjee; Carl L. Rodriguez; Meagan Morscher; Bharath Pattabiraman; Vicky Kalogera; Frederic A. Rasio

    2015-11-03

    Hierarchical triple-star systems are expected to form frequently via close binary-binary encounters in the dense cores of globular clusters. In a sufficiently inclined triple, gravitational interactions between the inner and outer binary can cause large-amplitude oscillations in the eccentricity of the inner orbit ("Lidov-Kozai cycles"), which can lead to a collision and merger of the two inner components. In this paper we use Monte Carlo models of dense star clusters to identify all triple systems formed dynamically and we compute their evolution using a highly accurate three-body integrator which incorporates relativistic and tidal effects. We find that a large fraction of these triples evolve through a non-secular dynamical phase which can drive the inner binary to higher eccentricities than predicted by the standard secular perturbation theory (even including octupole-order terms). We place constraints on the importance of Lidov-Kozai-induced mergers for producing: (i) gravitational wave sources detectable by Advanced LIGO (aLIGO), for triples with an inner pair of stellar black holes; and (ii) blue straggler stars, for triples with main-sequence-star components. We find a realistic aLIGO detection rate of black hole mergers due to the Lidov-Kozai mechanism of 2yr^-1, with about 20% of these having a finite eccentricity when they first chirp into the aLIGO frequency band. While rare, these events are likely to dominate among eccentric compact object inspirals that are potentially detectable by aLIGO. For blue stragglers, we find that the Lidov-Kozai mechanism can contribute only up to ~10% of their total numbers in globular clusters.

  5. Compact binary mergers as the origin of r-process elements in the Galactic halo

    SciTech Connect (OSTI)

    Ishimaru, Yuhri [Department of Material Science, International Christian University, 3-10-2 Osawa, Mitaka, Tokyo 181-8585 (Japan); Wanajo, Shinya [National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan); Prantzos, Nikos [Institut d'Astrophysique de Paris, UMR7095 CNRS, Univ. P. and M. Curie, 98bis Bd. Arago, 75104 Paris (France)

    2014-05-02

    Compact binary mergers (of double neutron star and black hole-neutron star systems) are suggested to be the major site of the r-process elements in the Galaxy by recent hydrodynamical and nucleosynthesis studies. It has been pointed out, however, that estimated long lifetimes of compact binaries are in conflict with the presence of r-process-enhanced stars at the metallicity [Fe/H] ? ?3. To resolve this problem, we examine the role of compact binary mergers in the early Galactic chemical evolution on the assumption that our Galactic halo was formed from merging sub-halos. The chemical evolutions are modeled for sub-halos with their total stellar masses between 10{sup 4}M{sub ?} and 2 × 10{sup 8}M{sub ?}. The lifetimes of compact binaries are assumed to be 100 Myr (95%) and 1 Myr (5%) according to recent binary population synthesis studies. We find that the r-process abundances (relative to iron; [r/Fe]) start increasing at [Fe/H] ? ?3 if the star formation rates are smaller for less massive sub-halos. Our models also suggest that the star-to-star scatter of [r/Fe]'s observed in Galactic halo stars can be interpreted as a consequence of greater gas outflow rates for less massive sub-halos. In addition, the sub-solar [r/Fe]'s (observed as [Ba/Fe] ? ?1.5 for [Fe/H] < ?3) are explained by the contribution from the short-lived (? 1 Myr) binaries. Our result indicates, therefore, that compact binary mergers can be potentially the origin of the r-process elements throughout the Galactic history.

  6. GRAVITATIONAL WAVES FROM MASSIVE MAGNETARS FORMED IN BINARY NEUTRON STAR MERGERS

    SciTech Connect (OSTI)

    Dall'Osso, Simone [Theoretical Astrophysics, University of Tübingen, auf der Morgenstelle 10 D-72076 (Germany); Giacomazzo, Bruno [Physics Department, University of Trento, via Sommarive 14, I-38123 Trento (Italy); Perna, Rosalba [Department of Physics and Astronomy, Stony Brook University, Stony Brook, NY 11794 (United States); Stella, Luigi, E-mail: simone.dallosso@uni-tuebingen.de [INAF-Osservatorio Astronomico di Roma, via di Frascati 33, I-00040 Monteporzio Catone, Roma (Italy)

    2015-01-01

    Binary neutron star (NS) mergers are among the most promising sources of gravitational waves (GWs), as well as candidate progenitors for short gamma-ray bursts (SGRBs). Depending on the total initial mass of the system and the NS equation of state (EOS), the post-merger phase can be characterized by a prompt collapse to a black hole or by the formation of a supramassive NS, or even a stable NS. In the latter cases of post-merger NS (PMNS) formation, magnetic field amplification during the merger will produce a magnetar and induce a mass quadrupole moment in the newly formed NS. If the timescale for orthogonalization of the magnetic symmetry axis with the spin axis is smaller than the spindown time, the NS will radiate its spin down energy primarily via GWs. Here we study this scenario for the various outcomes of NS formation: we generalize the set of equilibrium states for a twisted torus magnetic configuration to include solutions that, for the same external dipolar field, carry a larger magnetic energy reservoir; we hence compute the magnetic ellipticity for such configurations, and the corresponding strength of the expected GW signal as a function of the relative magnitude of the dipolar and toroidal field components. The relative number of GW detections from PMNSs and from binary NSs is a very strong function of the NS EOS, being higher (?1%) for the stiffest EOSs and negligibly small for the softest ones. For intermediate-stiffness EOSs, such as the n = 4/7 polytrope recently used by Giacomazzo and Perna or the GM1 used by Lasky et al., the relative fraction is ?0.3%; correspondingly, we estimate a GW detection rate from stable PMNSs of ?0.1-1 yr{sup –1} with advanced detectors, and of ?100-1000 yr{sup –1} with detectors of third generation such as the Einstein Telescope. Measurement of such GW signals would provide constraints on the NS EOS and, in connection with an SGRB, on the nature of the binary progenitors giving rise to these events.

  7. Neutrino signatures and the neutrino-driven wind in Binary Neutron Star Mergers

    E-Print Network [OSTI]

    Luc Dessart; Christian Ott; Adam Burrows; Stefan Rosswog; Eli Livne

    2008-06-26

    We present VULCAN/2D multi-group flux-limited-diffusion radiation hydrodynamics simulations of binary neutron star (BNS) mergers, using the Shen equation of state, covering ~100 ms, and starting from azimuthal-averaged 2D slices obtained from 3D SPH simulations of Rosswog & Price for 1.4 Msun (baryonic) neutron stars with no initial spins, co-rotating spins, and counter-rotating spins. Snapshots are post-processed at 10 ms intervals with a multi-angle neutrino-transport solver. We find polar-enhanced neutrino luminosities, dominated by $\\bar{\

  8. Realistic fission models, new beta-decay half-lives and the r-process in neutron star mergers

    SciTech Connect (OSTI)

    Shibagaki, S.; Kajino, T. [Department of Astronomy, Graduate School of Science, University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan and National Astronomical Observatory of Japan, 2-21-1 Osawa, Mitaka, Tokyo 181-8588 (Japan); Chiba, S. [Research Laboratory for Nuclear Reactors, Tokyo Institute of Technology, Ookayama, Meguro-ku, Tokyo, 152-8850 (Japan); Lorusso, G.; Nishimura, S. [RIKEN Nishina Center, 2-1 Hirosawa, Wako, Saitama 351-0198 (Japan); Mathews, G. J. [Center for Astrophysics, Department of Physics, University of Notre Dame, IN 46556 (United States)

    2014-05-02

    Almost half of heavy nuclei beyond iron are considered to be produced by rapid neutron capture process (r-process). This process occurs in the neutron-rich environment such as core-collapse supernovae or neutron star mergers, but the main production site is still unknown. In the r-process of neutron star mergers, nuclear fission reactions play an important role. Also beta-decay half-lives of magic nuclei are crucial for the r-process. We have carried out r-process nucleosynthesis calculations based upon new theoretical estimates of fission fragment distributions and new beta-decay half-lives for N=82 nuclei measured at RIBF-RIKEN. We investigate the effect of nuclear fission on abundance patterns in the matter ejected from neutron star mergers with two different fission fragment mass distributions. We also discuss how the new experimental beta-decay half-lives affect the r-process.

  9. Formation of S0 galaxies through mergers: Explaining angular momentum and concentration change from spirals to S0s

    E-Print Network [OSTI]

    Querejeta, Miguel; Tapia, Trinidad; Borlaff, Alejandro; van de Ven, Glenn; Lyubenova, Mariya; Martig, Marie; Falcón-Barroso, Jesús; Méndez-Abreu, Jairo

    2015-01-01

    The CALIFA team has recently found that the stellar angular momentum and concentration of late-type spiral galaxies are incompatible with those of lenticular galaxies (S0s), concluding that fading alone cannot satisfactorily explain the evolution from spirals into S0s. Here we explore whether major mergers can provide an alternative way to transform spirals into S0s by analysing the spiral-spiral major mergers from the GalMer database that lead to realistic, relaxed S0-like galaxies. We find that the change in stellar angular momentum and concentration can explain the differences in the $\\lambda_\\mathrm{Re}$--$R_{90}/R_{50}$ plane found by the CALIFA team. Major mergers thus offer a feasible explanation for the transformation of spirals into S0s.

  10. Relativistic Simulations of Eccentric Binary Neutron Star Mergers: One-arm Spiral Instability and Effects of Neutron Star Spin

    E-Print Network [OSTI]

    East, William E; Pretorius, Frans; Shapiro, Stuart L

    2015-01-01

    We perform general-relativistic hydrodynamical simulations of dynamical capture binary neutron star mergers, emphasizing the role played by the neutron star spin. Dynamical capture mergers may take place in globular clusters, as well as other dense stellar systems, where most neutron stars have large spins. We find significant variability in the merger outcome as a function of initial neutron star spin. For cases where the spin is aligned with the orbital angular momentum, the additional centrifugal support in the remnant hypermassive neutron star can prevent the prompt collapse to a black hole, while for antialigned cases the decreased total angular momentum can facilitate the collapse to a black hole. We show that even moderate spins can significantly increase the amount of ejected material, including the amount unbound with velocities greater than half the speed of light, leading to brighter electromagnetic signatures associated with kilonovae and interaction of the ejecta with the interstellar medium. Fur...

  11. The Industrial Electrification Program 

    E-Print Network [OSTI]

    Harry, I. L.

    1982-01-01

    EPRI's role as the research organization of the electric power industry, in coordination with potential user industries, is to 1) define the viability of candidate electrification technologies by monitoring the state-of-the-art and continuously...

  12. INDUSTRIAL ENGINEER APPRENTICE OPPORTUNITY

    E-Print Network [OSTI]

    Pohl, Karsten

    INDUSTRIAL ENGINEER APPRENTICE OPPORTUNITY SUMMER 2013 Industrial Engineering COOP Student needed-Fri, for summer 2013. Student must be enrolled in BS Engineering program. (Preferably completed 2-3 yrs

  13. Short gamma-ray bursts from binary neutron star mergers: the time-reversal scenario

    E-Print Network [OSTI]

    Ciolfi, Riccardo

    2015-01-01

    After decades of observations the physical mechanisms that generate short gamma-ray bursts (SGRBs) still remain unclear. Observational evidence provides support to the idea that SGRBs originate from the merger of compact binaries, consisting of two neutron stars (NSs) or a NS and a black hole (BH). Theoretical models and numerical simulations seem to converge to an explanation in which the central engine of SGRBs is given by a spinning BH surrounded by a hot accretion torus. Such a BH-torus system can be formed in compact binary mergers and is able to launch a relativistic jet, which can then produce the SGRB. This basic scenario, however, has recently been challenged by Swift satellite observations, which have revealed long-lasting X-ray afterglows in association with a large fraction of SGRB events. The long durations of these afterglows (from minutes to several hours) cannot be explained by the $\\sim\\text{s}$ accretion timescale of the torus onto the BH, and, instead, suggest a long-lived NS as the persist...

  14. Isotropic Detectable X-ray Counterparts to Gravitational Waves from Neutron Star Binary Mergers

    E-Print Network [OSTI]

    Shota Kisaka; Kunihito Ioka; Takashi Nakamura

    2015-07-18

    Neutron star binary mergers are strong sources of gravitational waves (GWs). Promising electromagnetic counterparts are short gamma-ray bursts (GRBs) but the emission is highly collimated. We propose that the scattering of the long-lasting plateau emission in short GRBs by the merger ejecta produces nearly isotropic emission for $\\sim 10^4$ s with flux $10^{-13}-10^{-10}$ erg cm$^{-2}$ s$^{-1}$ at 100 Mpc in X-ray. This is detectable by Swift XRT and wide field X-ray detectors such as ISS-Lobster, Einstein Probe, eROSITA and WF-MAXI, which are desired by the infrared and optical follow-ups to localize and measure the distance to the host galaxy. The scattered X-rays obtain linear polarization, which correlates with the jet direction, X-ray luminosity and GW polarizations. The activity of plateau emission is also a natural energy source of a macronova (or kilonova) detected in short GRB 130603B without the $r$-process radioactivity.

  15. Isotropic Detectable X-ray Counterparts to Gravitational Waves from Neutron Star Binary Mergers

    E-Print Network [OSTI]

    Kisaka, Shota; Nakamura, Takashi

    2015-01-01

    Neutron star binary mergers are strong sources of gravitational waves (GWs). Promising electromagnetic counterparts are short gamma-ray bursts (GRBs) but the emission is highly collimated. We propose that the scattering of the long-lasting plateau emission in short GRBs by the merger ejecta produces nearly isotropic emission for $\\sim 10^4$ s with flux $10^{-10}-10^{-13}$ erg cm$^{-2}$ s$^{-1}$ in X-ray. This is detectable by wide field X-ray detectors such as ISS-Lobster, eROSITA and WF-MAXI, which are desired by the infrared and optical follow-ups to localize and measure the distance to the host galaxy. The scattered X-rays obtain linear polarization, which correlates with the jet direction, X-ray luminosity and GW polarizations. The activity of plateau emission is also a natural energy source of a macronova (or kilonova) detected in short GRB 130603B without the $r$-process radioactivity.

  16. Outflows from accretion disks formed in neutron star mergers: effect of black hole spin

    E-Print Network [OSTI]

    Rodrigo Fernández; Daniel Kasen; Brian D. Metzger; Eliot Quataert

    2014-10-09

    The accretion disk that forms after a neutron star merger is a source of neutron-rich ejecta. The ejected material contributes to a radioactively-powered electromagnetic transient, with properties that depend sensitively on the composition of the outflow. Here we investigate how the spin of the black hole remnant influences mass ejection on the thermal and viscous timescales. We carry out two-dimensional, time-dependent hydrodynamic simulations of merger remnant accretion disks including viscous angular momentum transport and approximate neutrino self-irradiation. The gravity of the spinning black hole is included via a pseudo-Newtonian potential. We find that a disk around a spinning black hole ejects more mass, up to a factor of several, relative to the non-spinning case. The enhanced mass loss is due to energy release by accretion occurring deeper in the gravitational potential, raising the disk temperature and hence the rate of viscous heating in regions where neutrino cooling is ineffective. The mean electron fraction of the outflow increases moderately with BH spin due to a highly-irradiated (though not neutrino-driven) wind component. While the bulk of the ejecta is still very neutron-rich, thus generating heavy r-process elements, the leading edge of the wind contains a small amount of Lanthanide-free material. This component can give rise to a ~1 day blue optical `bump' in a kilonova light curve, even in the case of prompt BH formation, which may facilitate its detection.

  17. BRIGHT BROADBAND AFTERGLOWS OF GRAVITATIONAL WAVE BURSTS FROM MERGERS OF BINARY NEUTRON STARS

    SciTech Connect (OSTI)

    Gao He; Ding Xuan; Wu Xuefeng [Purple Mountain Observatory, Chinese Academy of Sciences, Nanjing 210008 (China); Zhang Bing [Department of Physics and Astronomy, University of Nevada, Las Vegas, NV 89154 (United States); Dai Zigao, E-mail: xfwu@pmo.ac.cn, E-mail: zhang@physics.unlv.edu, E-mail: dzg@nju.edu.cn [School of Astronomy and Space Science, Nanjing University, Nanjing 210093 (China)

    2013-07-10

    If double neutron star mergers leave behind a massive magnetar rather than a black hole, then a bright early afterglow can follow the gravitational wave burst (GWB) even if there is no short gamma-ray burst (SGRB)-GWB association or if there is an association but the SGRB does not beam toward Earth. Besides directly dissipating the proto-magnetar wind, as suggested by Zhang, here we suggest that the magnetar wind could push the ejecta launched during the merger process and, under certain conditions, would reach a relativistic speed. Such a magnetar-powered ejecta, when interacting with the ambient medium, would develop a bright broadband afterglow due to synchrotron radiation. We study this physical scenario in detail and present the predicted X-ray, optical, and radio light curves for a range of magnetar and ejecta parameters. We show that the X-ray and optical light curves usually peak around the magnetar spin-down timescale ({approx}10{sup 3}-10{sup 5} s), reaching brightnesses readily detectable by wide-field X-ray and optical telescopes, and remain detectable for an extended period. The radio afterglow peaks later, but is much brighter than the case without a magnetar energy injection. Therefore, such bright broadband afterglows, if detected and combined with GWBs in the future, would be a probe of massive millisecond magnetars and stiff equations of state for nuclear matter.

  18. The dynamical mass ejection from binary neutron star mergers: Radiation-hydrodynamics study in general relativity

    E-Print Network [OSTI]

    Sekiguchi, Yuichiro; Kyutoku, Koutarou; Shibata, Masaru

    2015-01-01

    We perform radiation-hydrodynamics simulations of binary neutron star mergers in numerical relativity on the Japanese "K" supercomputer, taking into account neutrino cooling and heating by an updated leakage-plus-transfer scheme for the first time. Neutron stars are modeled by three modern finite-temperature equations of state (EOS) developed by Hempel and his collaborators. We find that the electron fraction has a broad distribution due to the weak processes and shock heating. The properties of the ejecta such as total mass, average electron fraction, and thermal energy depend strongly on the EOS. Only for a soft EOS (the so-called SFHo), the ejecta mass exceeds $0.01M_{\\odot}$. In this case, the electron fraction has a broad distribution which is well-suited for the production of the solar-like $r$-process abundance. For the other stiff EOS (DD2 and TM1), for which a long-lived massive neutron star is formed after the merger, the ejecta mass is smaller than $0.01M_{\\odot}$, although broad electron-fraction ...

  19. Performance of a Chirplet-based analysis for gravitational waves from binary black hole mergers

    E-Print Network [OSTI]

    Satya Mohapatra; Zachary Nemtzow; Eric Chassande-Mottin; Laura Cadonati

    2011-11-15

    The gravitational wave (GW) signature of a binary black hole (BBH) coalescence is characterized by rapid frequency evolution in the late inspiral and merger phases. For a system with total mass larger than 100 M_sun, ground based GW detectors are sensitive to the merger phase, and the in-band whitened waveform is a short-duration transient lasting about 10-30 ms. For a symmetric mass system with total mass between 10 and 100 M_sun, the detector is sensitive instead to the inspiral phase and the in-band signal has a longer duration, between 30 ms - 3 s. Omega is a search algorithm for GW bursts that, with the assumption of locally stationary frequency evolution, uses sine-Gaussian wavelets as a template bank to decompose interferometer strain data. The local stationarity of sine-Gaussians induces a performance loss for the detection of lower mass BBH signatures, due to the mismatch between template and signal. We present the performance of a modified version of the Omega algorithm, Chirplet Omega, which allows a linear variation of frequency, to target BBH coalescences. The use of Chirplet-like templates enhances the measured signal-to-noise ratio due to less mismatch between template and data, and increases the detectability of lower mass BBH coalescences. We present the results of a performance study of Chirplet Omega in colored Gaussian noise at initial LIGO sensitivity.

  20. Geothermal Industry Partnership Opportunities

    Broader source: Energy.gov [DOE]

    Here you'll find links to information about partnership opportunities and programs for the geothermal industry.

  1. Industry Analysis January 2012

    E-Print Network [OSTI]

    Abolmaesumi, Purang

    ;8 Conference Board E-Library ­ Canadian industries, economic trends & forecasts ­ national, provincial1 CHEE 906 Industry Analysis January 2012 Constance Adamson, Stauffer Library adamsonc for both Industry and Company research ­ they build on each other #12;3 Where are they? · Library website

  2. Industrial Optimization Compact Course

    E-Print Network [OSTI]

    Kirches, Christian

    Industrial Optimization Compact Course and Challenge Workshop Optimization plays a crucial role in designing and conducting industrial processes. The potential gains range from saving valuable resources over makers from industry and academia to initiate new projects and to foster new structured collaborations

  3. Mechanical & Industrial Engineering

    E-Print Network [OSTI]

    Mountziaris, T. J.

    Mechanical & Industrial Engineering Mario A. Rotea Professor and Department Head #12;2Mechanical & Industrial Engineering Outline · Undergraduate Degree Programs · Graduate Degree Programs · The Faculty · The Research · Summary #12;3Mechanical & Industrial Engineering Undergraduate Programs ­ BSME & BSIE 0 20 40 60

  4. Photovoltaics industry profile

    SciTech Connect (OSTI)

    1980-10-01

    A description of the status of the US photovoltaics industry is given. Principal end-user industries are identified, domestic and foreign market trends are discussed, and industry-organized and US government-organized trade promotion events are listed. Trade associations and trade journals are listed, and a photovoltaic product manufacturers list is included. (WHK)

  5. Industry-identified combustion research needs: Special study

    SciTech Connect (OSTI)

    Keller, J.G.; Soelberg, N.R.; Kessinger, G.F.

    1995-11-01

    This report discusses the development and demonstration of innovative combustion technologies that improve energy conservation and environmental practices in the US industrial sector. The report includes recommendations by industry on R&D needed to resolve current combustion-related problems. Both fundamental and applied R&D needs are presented. The report assesses combustion needs and suggests research ideas for seven major industries, which consume about 78% of all energy used by industry. Included are the glass, pulp and paper, refinery, steel, metal casting, chemicals, and aluminum industries. Information has been collected from manufacturers, industrial operators, trade organizations, and various funding organizations and has been supplemented with expertise at the Idaho National Engineering Laboratory to develop a list of suggested research and development needed for each of the seven industries.

  6. INDUSTRIAL RELATIONS 1. Agreements with Industry

    E-Print Network [OSTI]

    of the New Hampshire Industrial Research Center (NHIRC), a cooperative project of the New Hampshire Department of Resources and Economic Development (DRED), the University of New Hampshire (UNH), and Dartmouth

  7. Industrial policy and the Indian electronics industry

    E-Print Network [OSTI]

    Love, Robert (Robert Eric)

    2008-01-01

    Recently, production within India's Electronics sector amounted to a low $12 billion when compared to the global output of $1400 billion. The slow growth in the local industry is often judged to be the result of late ...

  8. Industrial Dojo Program Fosters Industrial Internet Development...

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

    Dojo,' Contributes to Open Source to Foster Continued Development of the Industrial Internet Click to email this to a friend (Opens in new window) Share on Facebook (Opens in new...

  9. World Best Practice Energy Intensity Values for Selected Industrial Sectors

    E-Print Network [OSTI]

    Worrell, Ernst; Price, Lynn; Neelis, Maarten; Galitsky, Christina; Zhou, Nan

    2007-01-01

    1996. COREX, Revolution in Ironmaking, Linz, Austria:VAI. ;GJ/t Material Preparation Ironmaking Sintering PelletizingGJ/t Material Preparation Ironmaking Sintering Pelletizing

  10. World Best Practice Energy Intensity Values for Selected Industrial Sectors

    E-Print Network [OSTI]

    Worrell, Ernst; Price, Lynn; Neelis, Maarten; Galitsky, Christina; Zhou, Nan

    2007-01-01

    5 2.1.1 Blast Furnace – BasicOxygen Furnace Route……………………….Basic Oxygen Furnace………………………… 10 2.1.3 Direct Reduced

  11. World Best Practice Energy Intensity Values for Selected Industrial Sectors

    E-Print Network [OSTI]

    Worrell, Ernst; Price, Lynn; Neelis, Maarten; Galitsky, Christina; Zhou, Nan

    2007-01-01

    in a back-pressure steam turbine to generate electricity (compressor uses a steam turbine, using internally generatedwith a gas turbine, producing steam and electricity. The hot

  12. World Best Practice Energy Intensity Values for Selected Industrial Sectors

    E-Print Network [OSTI]

    Worrell, Ernst; Price, Lynn; Neelis, Maarten; Galitsky, Christina; Zhou, Nan

    2007-01-01

    ammonia is made from heavy oil and coal, which is much lessfeedstock, followed by heavy oil, which requires an averagepartial oxidization of heavy fuel oil, gasification of coal,

  13. Industrial practices of real-time scheduling Nicolas Navet

    E-Print Network [OSTI]

    Navet, Nicolas

    platforms Automotive in the 90s: one function per ECU Avionics before : federated architectures Zoom on automotive & avionics systems Timing verification techniques & models 2 #12;There is a gap.g. automotive Electronic Control Units & buses. Technology requires state-of-the-art techniques: many- core

  14. World Best Practice Energy Intensity Values for Selected Industrial Sectors

    E-Print Network [OSTI]

    Worrell, Ernst; Price, Lynn; Neelis, Maarten; Galitsky, Christina; Zhou, Nan

    2007-01-01

    Cement Portland Cement Fly Ash Cement Blast Furnace SlagCement Portland Cement Fly Ash Cement Blast Furnace SlagCEM II), up to 35% can be fly ash and 65% clinker; for blast

  15. World Best Practice Energy Intensity Values for Selected Industrial Sectors

    E-Print Network [OSTI]

    Worrell, Ernst; Price, Lynn; Neelis, Maarten; Galitsky, Christina; Zhou, Nan

    2007-01-01

    15 2.1.5 Casting……………………………………………………………….. 16 2.1.6 Rolling20 2.2.4 Ingot Casting…………………………………………………………. 20 2.2.5smelting, and ingot casting. This assessment excludes

  16. World Best Practice Energy Intensity Values for Selected Industrial Sectors

    E-Print Network [OSTI]

    Worrell, Ernst; Price, Lynn; Neelis, Maarten; Galitsky, Christina; Zhou, Nan

    2007-01-01

    iron and steel, petroleum and petrochemical, chemical, non-ferrous metal, building materials, pulp and paper, electricity production, coal mining,

  17. World Best Practice Energy Intensity Values for Selected Industrial Sectors

    E-Print Network [OSTI]

    Worrell, Ernst; Price, Lynn; Neelis, Maarten; Galitsky, Christina; Zhou, Nan

    2007-01-01

    feedstock, followed by heavy oil, which requires an averageammonia is made from heavy oil and coal, which is much lesspartial oxidization of heavy fuel oil, gasification of coal,

  18. World Best Practice Energy Intensity Values for Selected Industrial Sectors

    E-Print Network [OSTI]

    Worrell, Ernst; Price, Lynn; Neelis, Maarten; Galitsky, Christina; Zhou, Nan

    2007-01-01

    steam cracking and alternative processes,” Energy 31 (2006),steam cracking and alternative processes,” Energy 31 (2006),steam cracking and alternative processes,” Energy 31 (2006),

  19. World Best Practice Energy Intensity Values for Selected Industrial Sectors

    E-Print Network [OSTI]

    Worrell, Ernst; Price, Lynn; Neelis, Maarten; Galitsky, Christina; Zhou, Nan

    2007-01-01

    feedstock would use a coal gasifier to convert the coal tosynthesis gas. Most coal gasifier-based ammonia plants areof a modern entrained bed gasifier, selexol gas cleanup and

  20. World Best Practice Energy Intensity Values for Selected Industrial Sectors

    E-Print Network [OSTI]

    Worrell, Ernst; Price, Lynn; Neelis, Maarten; Galitsky, Christina; Zhou, Nan

    2007-01-01

    energy includes electricity generation, transmission, andenergy includes electricity generation, transmission, andenergy includes electricity generation, transmission, and

  1. World Best Practice Energy Intensity Values for Selected Industrial Sectors

    E-Print Network [OSTI]

    Worrell, Ernst; Price, Lynn; Neelis, Maarten; Galitsky, Christina; Zhou, Nan

    2007-01-01

    products such as propylene, butadiene and aromatics are co-ethylene, propylene, and butadiene) are separated usingHVC Propylene – HVC Butadiene – HVC Aromatics and C4+ –HVC

  2. Air Force Achieves Fuel Efficiency through Industry Best Practices...

    Office of Environmental Management (EM)

    Presentation Airlines & Aviation Alternative Fuels: Our Drive to Be Early Market Adopters Report of the DOE-DOE Workshop on Fuel Cells in Aviation: Workshop Summary and Action Plan...

  3. DOE-STD-6005-2001; Industrial Hygiene Practices

    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 Data Center Home Page on Delicious Rank EERE:FinancingPetroleum Based| Department8, 20153 METHODS DERIVATION MODULEApril 30, 200132

  4. Superior Energy Performance Industrial Facility Best Practice Scorecard |

    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 Data Center Home Page on Delicious RankADVANCED MANUFACTURINGEnergyPlan | Department of EnergySummary:Performance CertificationFact

  5. Air Force Achieves Fuel Efficiency through Industry Best Practices |

    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 Data Center Home Page on Delicious Rank EERE: Alternative FuelsofProgram:Y-12 Beta-3AUDITLeslie PezzulloAgenda AgendaEnergy Air

  6. Industry`s turnaround looks real

    SciTech Connect (OSTI)

    NONE

    1997-08-01

    The paper discusses the industry outlook for North American gas and oil industries. In a robust Canada, land sales are setting records, drilling is up, and output is rising beyond last year`s 21% growth. A perception among US operators that wellhead prices will remain stable is translating to increased spending. The USA, Canada, Mexico, Cuba are evaluated separately, with brief evaluations of Greenland, Guatemala, Belize, and Costa Rico. Data are presented on drilling activities.

  7. Identifying Water Savings in Industrial Operations 

    E-Print Network [OSTI]

    Theising, T.

    2015-01-01

    Solutions, L.L.C. Identifying Water Savings in Industrial Operations IETC June 4, 2015 Tom Theising, C.E.M., C.D.S.M. (979) 709-6389 tom.theising@yahoo.com ESL-IE-15-06-23a Proceedings of the Thrity-Seventh Industrial Energy Technology Conference New... Orleans, LA. June 2-4, 2015 SES Sustainable Energy Solutions, L.L.C. Energy Optimization Services: • Energy Efficiency Evaluation • Energy Management Program Development • Energy Maintenance Best Practices Energy Reliability Services: • Identify solutions...

  8. INDUSTRIAL&SYSTEMS Industrial and Systems engineers use engineering

    E-Print Network [OSTI]

    Rohs, Remo

    78 INDUSTRIAL&SYSTEMS Industrial and Systems engineers use engineering and business principles companies compete in today's global marketplace. The Industrial and Systems engineer's task is to take of industries including consulting, technology development, software, supply chain manufacturing, engineering

  9. Energy Efficiency Improvement and Cost Saving Opportunities for the Pharmaceutical Industry. An ENERGY STAR Guide for Energy and Plant Managers

    E-Print Network [OSTI]

    Galitsky, Christina

    2008-01-01

    2005). Guidelines for Energy Management. Washington, D.C.Caffal, C. (1995). Energy Management in Industry. Centre forfor improving your energy management practices. Resources

  10. The Effects of the Political-Legal Environment and Corporate Characteristics on Mergers and Acquisitions in India, 1991-2005 

    E-Print Network [OSTI]

    Ranganathan, Shilpa

    2012-07-16

    shows that merger and acquisition activity increased during a period of intense deregulation (i.e., 1991-2005) brought about by the adoption of neo-liberal reforms, change to the multilayer subsidiary form, deregulation of the banking and financial...

  11. Neutron-star merger ejecta as obstacles to neutrino-powered jets of gamma-ray bursts

    E-Print Network [OSTI]

    Just, Oliver; Janka, H -Thomas; Bauswein, Andreas; Schwarz, Nicole

    2015-01-01

    We present the first relativistic hydrodynamic simulations of black hole-torus systems as remnants of binary-neutron star (NS-NS) and neutron star-black hole (NS-BH) mergers, in which the viscously driven evolution of the accretion torus is followed with a self-consistent treatment of the energy-dependent neutrino transport and of neutrino-antineutrino annihilation, which initiates relativistic, collimated outflows above the poles of the BH. Moreover, we include the interaction of these polar outflows with the dynamical ejecta that are expelled during the NS-NS merging. The modeled torus masses, BH masses and spins, and the ejecta masses, velocities, and spatial distributions are adopted from relativistic merger simulations. We find that energy deposition by neutrino annihilation can accelerate outflows with initially high Lorentz factors along polar low-density funnels, but only in mergers with extremely low baryon pollution in the polar regions. NS-BH mergers, where polar mass ejection during the merging ph...

  12. Neutron star mergers versus core-collapse supernovae as dominant r-process sites in the early Galaxy

    E-Print Network [OSTI]

    D. Argast; M. Samland; F. -K. Thielemann; Y. -Z. Qian

    2003-09-08

    The astrophysical nature of r-process sites is a long standing mystery and many probable sources have been suggested in the past, among them lower-mass core-collapse supernovae (in the range 8 - 10 Msol), higher-mass core-collapse supernovae (with masses > 20 Msol) and neutron star mergers. In this work, we present a detailed inhomogeneous chemical evolution study that considers for the first time neutron star mergers as major r-process sources, and compare this scenario to the ones in which core-collapse supernovae act as dominant r-process sites. We conclude that, due to the lack of reliable iron and r-process yields as function of progenitor mass, it is not possible at present to distinguish between the lower-mass and higher-mass supernovae scenarios within the framework of inhomogeneous chemical evolution. However, neutron-star mergers seem to be ruled out as the dominant r-process source, since their low rates of occurrence would lead to r-process enrichment that is not consistent with observations at very low metallicities. Additionally, the considerable injection of r-process material by a single neutron-star merger leads to a scatter in [r-process/Fe] ratios at later times which is much too large compared to observations.

  13. On the fragility of nuclear stellar discs against galaxy mergers: surviving photometric and kinematic signatures of nuclear discs

    E-Print Network [OSTI]

    Sarzi, M; Dotti, M

    2015-01-01

    Nuclear stellar discs (NSDs) can help to constrain the assembly history of their host galaxies, as long as we can assume them to be fragile structures that are disrupted during merger events. In this work we investigate the fragility of NSDs by means of N-body simulations reproducing the last phases of a galaxy encounter, when the nuclear regions of the two galaxies merge. For this, we exposed a NSD set in the gravitational potential of the bulge and supermassive black hole of a primary galaxy to the impact of the supermassive black hole from a secondary galaxy. We explored merger events of different mass ratios, from major mergers with a 1:1 mass ratio to intermediate and minor interactions with 1:5 and 1:10 ratios, while considering various impact geometries. We analyse the end results of such mergers from different viewing angles and looked for possible photometric and kinematic signatures of the presence of a disc in the remnant surface density and velocity maps, while adopting detection limits from real ...

  14. Possible High-Energy Neutrino and Photon Signals from Gravitational Wave Bursts due to Double Neutron Star Mergers

    E-Print Network [OSTI]

    Gao, He; Wu, Xue-Feng; Dai, Zi-Gao

    2013-01-01

    As the technology of gravitational-wave and neutrino detectors becomes increasingly mature, a multi-messenger era of astronomy is ushered in. Advanced gravitational wave detectors are close to making a ground-breaking discovery of gravitational wave bursts (GWBs) associated with mergers of double neutron stars (NS-NS). It is essential to study the possible electromagnetic (EM) and neutrino emission counterparts of these GWBs. Recent observations and numerical simulations suggest that at least a fraction of NS-NS mergers may leave behind a massive millisecond magnetar as the merger product. Here we show that protons accelerated in the forward shock powered by a magnetar wind pushing the ejecta launched during the merger process would interact with photons generated in the dissipating magnetar wind and emit high energy neutrinos and photons. We estimate the typical energy and fluence of the neutrinos from such a scenario. We find that $\\sim$PeV neutrinos could be emitted from the shock front as long as the ejec...

  15. Essays on horizontal merger simulation: the curse of dimensionality, retail price discrimination, and supply channel stage-games 

    E-Print Network [OSTI]

    Pofahl, Geoffrey Michael

    2007-04-25

    .................................................................................................................331 APPENDIX E..................................................................................................................332 VITA...-Stackelberg..................................................158 1 INTRODUCTION Weekly, if not daily, business media is riddled with news of mergers and acquisitions: ?F.T.C. Moves to Stop $2.8 Billion Ice Cream Deal? (Day, 2003); ?Government Regulators Approve Nestlé?s Purchase of Dreyer's? (Ho, 2003...

  16. Midwest Industrial Energy Efficiency Handbook

    SciTech Connect (OSTI)

    2010-06-25

    This Industrial Technologies Program handbook connects industry with the various energy efficiency resources available in the midwest.

  17. Compact object mergers: Observations of supermassive binary black holes and stellar tidal disruption events

    E-Print Network [OSTI]

    Komossa, S

    2015-01-01

    The capture and disruption of stars by supermassive black holes (SMBHs), and the formation and coalescence of binaries, are inevitable consequences of the presence of SMBHs at the cores of galaxies. Pairs of active galactic nuclei (AGN) and binary SMBHs are important stages in the evolution of galaxy mergers, and an intense search for these systems is currently ongoing. In the early and advanced stages of galaxy merging, observations of the triggering of accretion onto one or both BHs inform us about feedback processes and BH growth. Identification of the compact binary SMBHs at parsec and sub-parsec scales provides us with important constraints on the interaction processes that govern the shrinkage of the binary beyond the "final parsec". Coalescing binary SMBHs are among the most powerful sources of gravitational waves (GWs) in the universe. Stellar tidal disruption events (TDEs) appear as luminous, transient, accretion flares when part of the stellar material is accreted by the SMBH. About 30 events have b...

  18. Monte Carlo Neutrino Transport Through Remnant Disks from Neutron Star Mergers

    E-Print Network [OSTI]

    Richers, S; O'Connor, Evan; Fernandez, Rodrigo; Ott, Christian

    2015-01-01

    We present Sedonu, a new open source, steady-state, special relativistic Monte Carlo (MC) neutrino transport code, available at bitbucket.org/srichers/sedonu. The code calculates the energy- and angle-dependent neutrino distribution function on fluid backgrounds of any number of spatial dimensions, calculates the rates of change of fluid internal energy and electron fraction, and solves for the equilibrium fluid temperature and electron fraction. We apply this method to snapshots from two dimensional simulations of accretion disks left behind by binary neutron star mergers, varying the input physics and comparing to the results obtained with a leakage scheme for the case of a central black hole and a central hypermassive neutron star. Neutrinos are guided away from the densest regions of the disk and escape preferentially around 45 degrees from the equatorial plane. Neutrino heating is strengthened by MC transport a few scale heights above the disk midplane near the innermost stable circular orbit, potentiall...

  19. Applications for Computers in Industrial Powerhouses 

    E-Print Network [OSTI]

    Delk, S. R.

    1981-01-01

    generation tu reduce electrical demand. There are even certain instances where it might be practical to vent intermediate or low pressure steam to the atmosphere to increase electric generation on back pressure turbines. With extensive experience... maintenance, if necessary. ~,. 756 ESL-IE-81-04-130 Proceedings from the Third Industrial Energy Technology Conference Houston, TX, April 26-29, 1981 EQUIPMENT CONTROL ~1r control of boiler functions such as drum level, drum pressure, furnace draf t, etc...

  20. Capturing the electromagnetic counterparts of binary neutron star mergers through low latency gravitational wave triggers

    E-Print Network [OSTI]

    Q. Chu; E. J. Howell; A. Rowlinson; H. Gao; B. Zhang; S. J. Tingay; M. Boer; L. Wen

    2015-09-26

    We investigate the prospects for joint low-latency gravitational wave (GW) detection and prompt electromagnetic (EM) follow-up observations of coalescing binary neutron stars (BNSs). Assuming BNS mergers are associated with short duration gamma ray bursts (SGRBs), we evaluate if rapid EM follow-ups can capture the prompt emission, early engine activity or reveal any potential by-products such as magnetars or fast radio bursts. To examine the expected performance of low-latency search pipelines we simulate a population of coalescing BNSs using realistic distributions of source parameters to estimate the detectability and localisation efficiency at different times before merger. To determine what EM observations can be achieved, we consider a selection of facilities with GW follow-up agreements in place, from low-frequency radio to high energy $\\gamma$-ray; we assess the performance of each using observational SGRB flux data corrected to the range of the advanced GW interferometric detectors LIGO and Virgo. We show that while challenging, breakthrough multimessenger science is possible to achieve with a range of follow-up facilities using low latency pipelines. To catch the prompt stage ($<$ 5s) of SGRBs under this scenario, it is challenging even for instruments with a large field-of-view; we suggest this provides motivation to speed up the follow-up pipelines of both the GW observatories and EM facilities. We further show that adding an Australian instrument to an expanded detector network including LIGO-India and Japanese KAGRA, will improve the angular resolution by a factor of 2. Using this network with an almost instantaneous GW triggering latency, we show that if wide field-of-view X-ray instruments such as the proposed ISS-Lobster can employ fast triggering mechanisms, one could obtain almost complete temporal and multiwavelength coverage of the prompt and early activity of SGRBs.

  1. CASL - Industry Council

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

    Member round Robin Discussion and New Action items Organization Senior Leadership Technical Leadership Outreach Board of Directors Industry Council Science Council One-Roof Culture...

  2. CASL - Industry Council Resources

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

    2014 March 17, 2015 Upcoming Meeting Information Organization Senior Leadership Technical Leadership Outreach Board of Directors Industry Council Science Council One-Roof Culture...

  3. Presentations for Industry

    Broader source: Energy.gov [DOE]

    Learn energy-saving strategies from leading manufacturing companies and energy experts. The presentations are organized below by topic area. In addition, industrial energy managers, utilities, and...

  4. About Industrial Distributed Energy

    Broader source: Energy.gov [DOE]

    The Advanced Manufacturing Office's (AMO's) Industrial Distributed Energy activities build on the success of predecessor DOE programs on distributed energy and combined heat and power (CHP) while...

  5. NGV industry infrastructure

    SciTech Connect (OSTI)

    Not Available

    1984-12-01

    Current natural gas vehicle (NGV) technology faces a number of problems that must be overcome before vehicles powered by compressed natural gas become accepted in the US. Among these impediments are regulatory uncertainties, codes, standards and the NGV industry infrastructure itself. The marketing/supply infrastructure necessary to support the NGV industry is described.

  6. and Industrial Engineering

    E-Print Network [OSTI]

    Mountziaris, T. J.

    45 Mechanical and Industrial Engineering 220 Engineering Lab Degrees: Bachelor of Science in Mechanical Engineering Bachelor of Science in Industrial Engineering Contact: James R. Rinderle, Undergraduate Program Director Office: 207C Engineering Lab Building Phone: (413) 545-2505 Head of Department

  7. Pseudo-Newtonian simulations of black hole-neutron star mergers as possible progenitors of short-duration gamma-ray bursts 

    E-Print Network [OSTI]

    Sriskantha, Hari Haran

    2014-11-27

    Black hole-neutron star (BH-NS) mergers are promising candidates for the progenitors of short-duration gamma-ray bursts (GRBs). With the right initial conditions, the neutron star becomes tidally disrupted, eventually ...

  8. Merger-driven Fueling of Active Galactic Nuclei: Six Dual and Offset Active Galactic Nuclei Discovered with Chandra and Hubble Space Telescope Observations

    E-Print Network [OSTI]

    Comerford, Julia M; Barrows, R Scott; Greene, Jenny E; Zakamska, Nadia L; Madejski, Greg M; Cooper, Michael C

    2015-01-01

    Dual active galactic nuclei (AGNs) and offset AGNs are kpc-scale separation supermassive black holes pairs created during galaxy mergers, where both or one of the black holes are AGNs, respectively. These dual and offset AGNs are valuable probes of the link between mergers and AGNs but are challenging to identify. Here we present Chandra/ACIS observations of 12 optically-selected dual AGN candidates at z dual AGN system with separation of 2.2 kpc, where the two stellar bulges have coincident [O III] and X-ray sources. This system is an extremely minor merger (460:1) that may include a dwarf galaxy hosting an intermediate mass black hole. We also find six single AGNs, and five systems that are either dual or offset AGNs with separations dual AGNs and dual/offset AGNs are in ongoing major mergers, a...

  9. Uranium industry annual 1996

    SciTech Connect (OSTI)

    1997-04-01

    The Uranium Industry Annual 1996 (UIA 1996) provides current statistical data on the US uranium industry`s activities relating to uranium raw materials and uranium marketing. The UIA 1996 is prepared for use by the Congress, Federal and State agencies, the uranium and nuclear electric utility industries, and the public. Data on uranium raw materials activities for 1987 through 1996 including exploration activities and expenditures, EIA-estimated reserves, mine production of uranium, production of uranium concentrate, and industry employment are presented in Chapter 1. Data on uranium marketing activities for 1994 through 2006, including purchases of uranium and enrichment services, enrichment feed deliveries, uranium fuel assemblies, filled and unfilled market requirements, uranium imports and exports, and uranium inventories are shown in Chapter 2. A feature article, The Role of Thorium in Nuclear Energy, is included. 24 figs., 56 tabs.

  10. Posted 3/2/13 Medline Industries Industrial Engineer

    E-Print Network [OSTI]

    Heller, Barbara

    Posted 3/2/13 Medline Industries ­ Industrial Engineer Medline Industries, Inc. has an immediate opening for an Industrial Engineer for our SPT Division located in Waukegan, IL. We are seeking a hard-working, detail-oriented professional with experience in industrial engineering and lean manufacturing within

  11. INDUSTRIAL&SYSTEMS Industrial and Systems engineers use engineering

    E-Print Network [OSTI]

    Rohs, Remo

    78 INDUSTRIAL&SYSTEMS Industrial and Systems engineers use engineering and business principles companies compete in today's global marketplace. The Industrial and Systems engineer's task is to take · Industrial and Systems Engineering Bachelor of Science 128 units · Industrial and Systems Engineering

  12. INDUSTRIAL & SYSTEMS Industrial and Systems engineers use engineering

    E-Print Network [OSTI]

    Rohs, Remo

    78 INDUSTRIAL & SYSTEMS Industrial and Systems engineers use engineering and business principles companies compete in todays global marketplace. The Industrial and Systems engineers task is to take limited Industrial and Systems Engineering Bachelor of Science 128 units Industrial and Systems Engineering

  13. INDUSTRIAL&SYSTEMS Industrial and Systems engineers use

    E-Print Network [OSTI]

    Rohs, Remo

    78 INDUSTRIAL&SYSTEMS Industrial and Systems engineers use engineering and business principles companies compete in today's global marketplace. The Industrial and Systems engineer's task is to take · Industrial and Systems Engineering Bachelor of Science 128 units · Industrial and Systems Engineering

  14. Nutrition Education and Practices Among Practicing Chiropractors

    E-Print Network [OSTI]

    Werner, Donna

    2008-04-29

    was to determine nutrition assessment and management practices used by chiropractors in the Midwest, and their nutritional education. A survey was mailed to 1400 chiropractors in four Midwest states and inquired about demographics, education, nutritional assessment...

  15. Survey Questionnaire on Environmental Management Practices: Summary of Results by Industry and practices

    E-Print Network [OSTI]

    Delmas, Magali A; Toffel, Michael W.

    2008-01-01

    is the status of ISO 14001 certification at your facility? ”ISO 14001 Implementation Status The results on the status of certification

  16. Creating Value Wood Products Industry

    E-Print Network [OSTI]

    1 Creating Value for the Wood Products Industry Creating Value for the Wood Products Industry for the Wood Products Industry The forest industry contributes more than 50 percent of the total value of all assistance to the primary and value-added processing wood products industries in Louisiana. Since its

  17. Major mergers with small galaxies - the discovery of a Magellanic-type galaxy at z=0.12

    E-Print Network [OSTI]

    Koch, Andreas; Pasquali, Anna; Rich, R Michael; Rabitz, Andreas

    2015-01-01

    We report on the serendipitous discovery of a star-forming galaxy at redshift z=0.116 with morphological features that indicate an ongoing merger. This object exhibits two clearly separated components with significantly different colors, plus a possible tidal stream. Follow-up spectroscopy of the bluer component revealed a low star-forming activity of 0.09 M$_{\\odot}$/year and a high metallicity of 12+log(O/H)=8.6. Based on comparison with mass-star-formation-rate and mass-metallicity relations, and on fitting of spectral energy distributions, we obtain a stellar mass of 3x10$^9$ M$_{\\odot}$, which renders this object comparable to the Large Magellanic Cloud (LMC). Thus our finding provides a further piece of evidence of a major merger already acting on small, dwarf galaxy-like scales.

  18. JET COLLIMATION IN THE EJECTA OF DOUBLE NEUTRON STAR MERGERS: A NEW CANONICAL PICTURE OF SHORT GAMMA-RAY BURSTS

    SciTech Connect (OSTI)

    Nagakura, Hiroki; Sekiguchi, Yuichiro; Shibata, Masaru; Hotokezaka, Kenta; Ioka, Kunihito

    2014-04-01

    The observations of jet breaks in the afterglows of short gamma-ray bursts (SGRBs) indicate that the jet has a small opening angle of ? 10°. The collimation mechanism of the jet is a longstanding theoretical problem. We numerically analyze the jet propagation in the material ejected by a double neutron star (NS) merger, and demonstrate that if the ejecta mass is ? 10{sup –2} M {sub ?}, the jet is well confined by the cocoon and emerges from the ejecta with the required collimation angle. Our results also suggest that there are some populations of choked (failed) SGRBs or new types of events with low luminosity. By constructing a model for SGRB 130603B, which is associated with the first kilonova/macronova candidate, we infer that the equation of state of NSs would be soft enough to provide sufficient ejecta to collimate the jet, if this event is associated with a double NS merger.

  19. Exploring binary-neutron-star-merger scenario of short-gamma-ray bursts by gravitational-wave observation

    E-Print Network [OSTI]

    Kenta Kiuchi; Yuichiro Sekiguchi; Masaru Shibata; Keisuke Taniguchi

    2010-02-13

    We elucidate the feature of gravitational waves (GWs) from binary neutron star merger collapsing to a black hole by general relativistic simulation. We show that GW spectrum imprints the coalescence dynamics, formation process of disk, equation of state for neutron stars, total masses, and mass ratio. A formation mechanism of the central engine of short $\\gamma$-ray bursts, which are likely to be composed of a black hole and surrounding disk, therefore could be constrained by GW observation.

  20. Industrial process surveillance system

    DOE Patents [OSTI]

    Gross, K.C.; Wegerich, S.W.; Singer, R.M.; Mott, J.E.

    1998-06-09

    A system and method are disclosed for monitoring an industrial process and/or industrial data source. The system includes generating time varying data from industrial data sources, processing the data to obtain time correlation of the data, determining the range of data, determining learned states of normal operation and using these states to generate expected values, comparing the expected values to current actual values to identify a current state of the process closest to a learned, normal state; generating a set of modeled data, and processing the modeled data to identify a data pattern and generating an alarm upon detecting a deviation from normalcy. 96 figs.

  1. Industrial Process Surveillance System

    DOE Patents [OSTI]

    Gross, Kenneth C. (Bolingbrook, IL); Wegerich, Stephan W (Glendale Heights, IL); Singer, Ralph M. (Naperville, IL); Mott, Jack E. (Idaho Falls, ID)

    2001-01-30

    A system and method for monitoring an industrial process and/or industrial data source. The system includes generating time varying data from industrial data sources, processing the data to obtain time correlation of the data, determining the range of data, determining learned states of normal operation and using these states to generate expected values, comparing the expected values to current actual values to identify a current state of the process closest to a learned, normal state; generating a set of modeled data, and processing the modeled data to identify a data pattern and generating an alarm upon detecting a deviation from normalcy.

  2. Industrial process surveillance system

    DOE Patents [OSTI]

    Gross, Kenneth C. (Bolingbrook, IL); Wegerich, Stephan W. (Glendale Heights, IL); Singer, Ralph M. (Naperville, IL); Mott, Jack E. (Idaho Falls, ID)

    1998-01-01

    A system and method for monitoring an industrial process and/or industrial data source. The system includes generating time varying data from industrial data sources, processing the data to obtain time correlation of the data, determining the range of data, determining learned states of normal operation and using these states to generate expected values, comparing the expected values to current actual values to identify a current state of the process closest to a learned, normal state; generating a set of modeled data, and processing the modeled data to identify a data pattern and generating an alarm upon detecting a deviation from normalcy.

  3. Broadening Industry Governance to Include Nonproliferation

    SciTech Connect (OSTI)

    Hund, Gretchen; Seward, Amy M.

    2008-11-11

    As industry is the first line of defense in detecting and thwarting illicit trade networks, the engagement of the private sector is critical to any government effort to strengthen existing mechanisms to protect goods and services throughout the supply chain. This study builds on previous PNNL work to continue to evaluate means for greater industry engagement to complement and strengthen existing governmental efforts to detect and stem the trade of illicit goods and to protect and secure goods that could be used in making a weapon of mass destruction. Specifically, the study evaluates the concept of Industry Self Regulation, defined as a systematic voluntary program undertaken by an industry or by individual companies to anticipate, implement, supplement, or substitute for regulatory requirements in a given field, generally through the adoption of best practices. Through a series of interviews with companies with a past history of non-compliance, trade associations and NGOs, the authors identify gaps in the existing regulatory infrastructure, drivers for a self regulation approach and the form such an approach might take, as well as obstacles to be overcome. The authors conclude that it is at the intersection of industry, government, and security that—through collaborative means—the effectiveness of the international nonproliferation system—can be most effectively strengthened to the mutual benefit of both government and the private sector. Industry has a critical stake in the success of this regime, and has the potential to act as an integrating force that brings together the existing mechanisms of the global nonproliferation regime: export controls, physical protection, and safeguards. The authors conclude that industry compliance is not enough; rather, nonproliferation must become a central tenant of a company’s corporate culture and be viewed as an integral component of corporate social responsibility (CSR).

  4. High-resolution imaging of the molecular outflows in two mergers: IRAS17208-0014 and NGC1614

    E-Print Network [OSTI]

    Garcia-Burillo, S; Usero, A; Aalto, S; Colina, L; Alonso-Herrero, A; Hunt, L K; Arribas, S; Costagliola, F; Labiano, A; Neri, R; Pereira-Santaella, M; Tacconi, L J; van der Werf, P P

    2015-01-01

    Galaxy evolution scenarios predict that the feedback of star formation and nuclear activity (AGN) can drive the transformation of gas-rich spiral mergers into ULIRGs, and, eventually, lead to the build-up of QSO/elliptical hosts. We study the role that star formation and AGN feedback have in launching and maintaining the molecular outflows in two starburst-dominated advanced mergers, NGC1614 and IRAS17208-0014, by analyzing the distribution and kinematics of their molecular gas reservoirs. We have used the PdBI array to image with high spatial resolution (0.5"-1.2") the CO(1-0) and CO(2-1) line emissions in NGC1614 and IRAS17208-0014, respectively. The velocity fields of the gas are analyzed and modeled to find the evidence of molecular outflows in these sources and characterize the mass, momentum and energy of these components. While most (>95%) of the CO emission stems from spatially-resolved (~2-3kpc-diameter) rotating disks, we also detect in both mergers the emission from high-velocity line wings that ex...

  5. On the Influence of Minor Mergers on the Radial Abundance Gradient in Disks of Milky Way-like Galaxies

    E-Print Network [OSTI]

    Zinchenko, Igor A; Grebel, Eva K; Pilyugin, Leonid S; Just, Andreas

    2015-01-01

    We investigate the influence of stellar migration caused by minor mergers (mass ratio from 1:70 to 1:8) on the radial distribution of chemical abundances in the disks of Milky Way-like galaxies during the last four Gyr. A GPU-based pure N-body tree-code model without hydrodynamics and star formation was used. We computed a large set of mergers with different initial satellite masses, positions, and orbital velocities. We find that there is no significant metallicity change at any radius of the primary galaxy in the case of accretion of a low-mass satellite of 10$^9$ M$_{\\odot}$ (mass ratio 1:70) except for the special case of prograde satellite motion in the disk plane of the host galaxy. The accretion of a satellite of a mass $\\gtrsim3\\times10^9$ M$_{\\odot}$ (mass ratio 1:23) results in an appreciable increase of the chemical abundances at galactocentric distances larger than $\\sim10$ kpc. The radial abundance gradient flattens in the range of galactocentric distances from 5 to 15 kpc in the case of a merger...

  6. Short-lived $^{244}$Pu Points to Compact Binary Mergers as Sites for Heavy r-process Nucleosynthesis

    E-Print Network [OSTI]

    Hotokezaka, Kenta; Paul, Michael

    2015-01-01

    Measurements of the radioactive $^{244}$Pu abundances can break the degeneracy between high-rate/low-yield and low-rate/high-yield scenarios for the production of heavy $r$-process elements. The first corresponds to production by core collapse supernovae (cc-SNe) while the latter corresponds to production by e.g. compact binary mergers. The estimated $^{244}$Pu abundance in the current interstellar medium inferred from deep-sea measurements (Wallner et al. 2015) is significantly lower than that corresponding Early Solar System abundances (Turner et al 2007). We estimate the expected median value of the $^{244}$Pu abundances and fluctuations around this value in both models. We show that while the current and Early Solar System abundances are naturally explained within the low-rate/high-yield (e.g. merger) scenario, they are incompatible with the high-rate/low-yield (cc-SNe) model. The inferred event rate remarkably agrees with compact binary merger rates estimated from Galactic neutron star binaries and from ...

  7. Red or blue? A potential kilonova imprint of the delay until black hole formation following a neutron star merger

    E-Print Network [OSTI]

    Brian D. Metzger; Rodrigo Fernández

    2014-05-02

    Mergers of binary neutron stars (NSs) usually result in the formation of a hypermassive neutron star (HMNS). Whether- and when this remnant collapses to a black hole (BH) depends primarily on the equation of state and on angular momentum transport processes, both of which are uncertain. Here we show that the lifetime of the merger remnant may be directly imprinted in the radioactively powered kilonova emission following the merger. We employ axisymmetric, time-dependent hydrodynamic simulations of remnant accretion disks orbiting a HMNS of variable lifetime, and characterize the effect of this delay to BH formation on the disk wind ejecta. When BH formation is relatively prompt (~ 100 ms), outflows from the disk are sufficiently neutron rich to form heavy r-process elements, resulting in ~ week-long emission with a spectral peak in the near-infrared (NIR), similar to that produced by the dynamical ejecta. In contrast, delayed BH formation allows neutrinos from the HMNS to raise the electron fraction in the polar direction to values such that potentially Lanthanide-free outflows are generated. The lower opacity would produce a brighter, bluer, and shorter-lived ~ day-long emission (a `blue bump') prior to the late NIR peak from the dynamical ejecta and equatorial wind. This new diagnostic of BH formation should be useful for events with a signal to noise lower than that required for direct detection of gravitational waveform signatures.

  8. Shock breakout driven by the remnant of a neutron star binary merger: An X-ray precursor of mergernova emission

    E-Print Network [OSTI]

    Li, Shao-Ze

    2015-01-01

    A supra-massive neutron star (NS) spinning extremely rapidly could survive from a merger of NS-NS binary. The spin-down of this remnant NS that is highly magnetized would power the isotropic merger ejecta to produce a bright mergernova emission in ultraviolet/optical bands. Before the mergernova, the early interaction between the NS wind and the ejecta can drive a forward shock to propagate outwards into the ejecta. As a result, a remarkable amount of heat can be accumulated to be deposited behind the shock front, the final escaping of which can produce a shock breakout emission. We describe the dynamics and thermal emission of this shock with a semi-analytical model. It is found that a sharp and luminous breakout emission, which is mainly in soft X-rays with a luminosity of $\\sim10^{45}~\\rm erg~s^{-1}$, appears at a few hours after the merger, by leading the mergernova emission as a precursor. Therefore, detections of such X-ray precursors would provide a smoking-gun evidence for identifying NS-powered merge...

  9. Oklahoma Industrial Energy Management Program 

    E-Print Network [OSTI]

    Turner, W. C.; Webb, R. E.; Phillips, J. M.; Viljoen, T. A.

    1979-01-01

    series of tuition free Industrial Energy Management Conferences (over 20 given to date involving many Oklahoma industries). 2. A free energy newsletter entitled "Energy Channel" mailed to all participating Oklahoma industries. 3. A series of Energy...

  10. Innovative Energy Efficient Industrial Ventilation 

    E-Print Network [OSTI]

    Litomisky, A.

    2005-01-01

    This paper was written to describe an innovative “on-demand” industrial ventilation system for woodworking, metalworking, food processing, pharmaceutical, chemical, and other industries. Having analyzed existing industrial ventilation in 130...

  11. Caraustar Industries Energy Assessment

    SciTech Connect (OSTI)

    2010-06-25

    This plant-wide assessment case study is about commissioned energy assessments by the U.S. Department of Energy Industrial Technologies Program at two of Caraustar's recycled paperboard mills.

  12. Industrial Decision Making 

    E-Print Network [OSTI]

    Elliott, R. N.; McKinney, V.; Shipley, A.

    2008-01-01

    Domestic industrial investment has declined due to unfavorable energy prices, and external markets. Investment behavior has changed over the past few years, and will continue due to high labor costs, tight markets and an unstable U.S. economy...

  13. Industrial Assessment Center

    SciTech Connect (OSTI)

    J. Kelly Kissock; Becky Blust

    2007-04-17

    The University of Dayton (UD) performed energy assessments, trained students and supported USDOE objectives. In particular, the UD Industrial Assessment Center (IAC) performed 96 industrial energy assessment days for mid-sized manufacturers. The average identified and implemented savings on each assessment were $261,080 per year and $54,790 per year. The assessments served as direct training in industrial energy efficiency for 16 UD IAC students. The assessments also served as a mechanism for the UD IAC to understand manufacturing energy use and improve upon the science of manufacturing energy efficiency. Specific research results were published in 16 conference proceedings and journals, disseminated in 22 additional invited lectures, and shared with the industrial energy community through the UD IAC website.

  14. BTU Accounting for Industry 

    E-Print Network [OSTI]

    Redd, R. O.

    1979-01-01

    Today, as never before, American industry needs to identify and control their most critical resources. One of these is energy. In 1973 and again in 1976, the American public and business was confronted with critical energy supply problems. As a...

  15. AI Industrial Engineering 

    E-Print Network [OSTI]

    Unknown

    2011-08-17

    This paper describes the California Energy Commission’s (Commission) energy policies and programs that save energy and money for California’s manufacturing and food processing industries to help retain businesses in-state and reduce greenhouse gases...

  16. Uranium Industry Annual, 1992

    SciTech Connect (OSTI)

    Not Available

    1993-10-28

    The Uranium Industry Annual provides current statistical data on the US uranium industry for the Congress, Federal and State agencies, the uranium and electric utility industries, and the public. The feature article, ``Decommissioning of US Conventional Uranium Production Centers,`` is included. Data on uranium raw materials activities including exploration activities and expenditures, resources and reserves, mine production of uranium, production of uranium concentrate, and industry employment are presented in Chapter 1. Data on uranium marketing activities including domestic uranium purchases, commitments by utilities, procurement arrangements, uranium imports under purchase contracts and exports, deliveries to enrichment suppliers, inventories, secondary market activities, utility market requirements, and uranium for sale by domestic suppliers are presented in Chapter 2.

  17. Load Management for Industry 

    E-Print Network [OSTI]

    Konsevick, W. J., Jr.

    1982-01-01

    categories: Thermal Energy Storage, Communication and Load Control, Interconnection and Operation of Power Systems, and Selective Load Promotions. The endeavors of the utility industry and Ohio Edison Company in three of the four categories are described...

  18. Industrial energy use indices 

    E-Print Network [OSTI]

    Hanegan, Andrew Aaron

    2009-05-15

    Energy use index (EUI) is an important measure of energy use which normalizes energy use by dividing by building area. Energy use indices and associated coefficients of variation are computed for major industry categories ...

  19. Utility and Industrial Partnerships 

    E-Print Network [OSTI]

    Sashihara, T. F.

    1989-01-01

    In the past decade, many external forces have shocked both utilities and their large industrial customers into seeking more effective ways of coping and surviving. One such way is to develop mutually beneficial partnerships optimizing the use...

  20. Industrial energy use indices 

    E-Print Network [OSTI]

    Hanegan, Andrew Aaron

    2008-10-10

    Energy use index (EUI) is an important measure of energy use which normalizes energy use by dividing by building area. Energy use indices and associated coefficients of variation are computed for major industry categories ...

  1. Animal Industries Building 

    E-Print Network [OSTI]

    Unknown

    2011-08-17

    Plant managers around the world are interested in improving the energy efficiency of their facilities while both growing and modernizing their manufacturing capabilities. Emerging industrial technologies, both at the ...

  2. Animal Industries Building 

    E-Print Network [OSTI]

    Unknown

    2011-08-17

    Industrial steam users recognize the need to reduce system cost in order to remain internationally competitive. Steam systems are a key utility that influence cost significantly, and represent a high value opportunity ...

  3. Steel Industry Profile

    Broader source: Energy.gov [DOE]

    The steel industry is critical to the U.S. economy. Steel is the material of choice for many elements of manufacturing, construction, transportation, and various consumer products. Traditionally...

  4. Industrial Fuel Flexibility Workshop

    SciTech Connect (OSTI)

    none,

    2006-09-01

    On September 28, 2006, in Washington, DC, ITP and Booz Allen Hamilton conducted a fuel flexibility workshop with attendance from various stakeholder groups. Workshop participants included representatives from the petrochemical, refining, food and beverage, steel and metals, pulp and paper, cement and glass manufacturing industries; as well as representatives from industrial boiler manufacturers, technology providers, energy and waste service providers, the federal government and national laboratories, and developers and financiers.

  5. Merger of white dwarf-neutron star binaries: Prelude to hydrodynamic simulations in general relativity

    SciTech Connect (OSTI)

    Paschalidis, Vasileios; MacLeod, Morgan; Baumgarte, Thomas W.; Shapiro, Stuart L.

    2009-07-15

    White dwarf-neutron star binaries generate detectable gravitational radiation. We construct Newtonian equilibrium models of corotational white dwarf-neutron star (WDNS) binaries in circular orbit and find that these models terminate at the Roche limit. At this point the binary will undergo either stable mass transfer (SMT) and evolve on a secular time scale, or unstable mass transfer (UMT), which results in the tidal disruption of the WD. The path a given binary will follow depends primarily on its mass ratio. We analyze the fate of known WDNS binaries and use population synthesis results to estimate the number of LISA-resolved galactic binaries that will undergo either SMT or UMT. We model the quasistationary SMT epoch by solving a set of simple ordinary differential equations and compute the corresponding gravitational waveforms. Finally, we discuss in general terms the possible fate of binaries that undergo UMT and construct approximate Newtonian equilibrium configurations of merged WDNS remnants. We use these configurations to assess plausible outcomes of our future, fully relativistic simulations of these systems. If sufficient WD debris lands on the NS, the remnant may collapse, whereby the gravitational waves from the inspiral, merger, and collapse phases will sweep from LISA through LIGO frequency bands. If the debris forms a disk about the NS, it may fragment and form planets.

  6. Modeling Equal and Unequal Mass Binary Neutron Star Mergers Using Public Codes

    E-Print Network [OSTI]

    De Pietri, Roberto; Maione, Francesco; Löffler, Frank

    2015-01-01

    We present three-dimensional simulations of the dynamics of binary neutron star (BNS) mergers from the late stage of the inspiral process up to $\\sim 20$ ms after the system has merged, either to form a hyper-massive neutron star (NS) or a rotating black hole (BH). We investigate five equal-mass models of total gravitational mass $2.207$, $2.373$, $2.537$, $2.697$ and $2.854 M_\\odot$, respectively, and four unequal mass models with $M_{\\mathrm{ADM}}\\simeq 2.53\\ M_\\odot$ and $q\\simeq 0.94$, $0.88$, $0.82$, and $0.77$ (where $q = M^{(1)}/M^{(2)}$ is the mass ratio). We use a semi-realistic equation of state (EOS) namely, the seven-segment piece-wise polytropic SLyPP with a thermal component given by $\\Gamma_{th} = 1.8$. We have also compared the resulting dynamics (for one model) using both, the BSSN-NOK and CCZ4 methods for the evolution of the gravitational sector, and also different reconstruction methods for the matter sector, namely PPM, WENO and MP5. Our results show agreement and high resolution, but sup...

  7. NECESSARY CONDITIONS FOR SHORT GAMMA-RAY BURST PRODUCTION IN BINARY NEUTRON STAR MERGERS

    SciTech Connect (OSTI)

    Murguia-Berthier, Ariadna; Montes, Gabriela; Ramirez-Ruiz, Enrico [Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064 (United States); De Colle, Fabio [Instituto de Ciencias Nucleares, Universidad Nacional Autónoma de México, A. P. 70-543, 04510 D. F. (Mexico); Lee, William H., E-mail: gmontes@ucsc.edu [Instituto de Astronomía, Universidad Nacional Autónoma de México, A. P. 70-264, 04510 D. F. (Mexico)

    2014-06-10

    The central engine of short gamma-ray bursts (sGRBs) is hidden from direct view, operating at a scale much smaller than that probed by the emitted radiation. Thus we must infer its origin not only with respect to the formation of the trigger—the actual astrophysical configuration that is capable of powering an sGRB—but also from the consequences that follow from the various evolutionary pathways that may be involved in producing it. Considering binary neutron star mergers we critically evaluate, analytically and through numerical simulations, whether the neutrino-driven wind produced by the newly formed hyper-massive neutron star can allow the collimated relativistic outflow that follows its collapse to actually produce an sGRB or not. Upon comparison with the observed sGRB duration distribution, we find that collapse cannot be significantly delayed (?100 ms) before the outflow is choked, thus limiting the possibility that long-lived hyper-massive remnants can account for these events. In the case of successful breakthrough of the jet through the neutrino-driven wind, the energy stored in the cocoon could contribute to the precursor and extended emission observed in sGRBs.

  8. Neutrino-driven winds in the aftermath of a neutron star merger: nucleosynthesis and electromagnetic transients

    E-Print Network [OSTI]

    Dirk Martin; Albino Perego; Almudena Arcones; Friedrich-Karl Thielemann; Oleg Korobkin; Stephan Rosswog

    2015-09-24

    We present a comprehensive nucleosynthesis study of the neutrino-driven wind in the aftermath of a binary neutron star merger. Our focus is the initial remnant phase when a massive central neutron star is present. Using tracers from a recent hydrodynamical simulation, we determine total masses and integrated abundances to characterize the composition of unbound matter. We find that the nucleosynthetic yields depend sensitively on both the life time of the massive neutron star and the polar angle. Matter in excess of up to $9 \\cdot 10^{-3} M_\\odot$ becomes unbound until $\\sim 200~{\\rm ms}$. Due to electron fractions of $Y_{\\rm e} \\approx 0.2 - 0.4$ mainly nuclei with mass numbers $A < 130$ are synthesized, complementing the yields from the earlier dynamic ejecta. Mixing scenarios with these two types of ejecta can explain the abundance pattern in r-process enriched metal-poor stars. Additionally, we calculate heating rates for the decay of the freshly produced radioactive isotopes. The resulting light curve peaks in the blue band after about $4~{\\rm h}$. Furthermore, high opacities due to heavy r-process nuclei in the dynamic ejecta lead to a second peak in the infrared after $3-4~{\\rm d}$.

  9. Radioactive decay products in neutron star merger ejecta: heating efficiency and $\\gamma$-ray emission

    E-Print Network [OSTI]

    Hotokezaka, Kenta; Tanaka, Masaomi; Bamba, Aya; Terada, Yukikatsu; Piran, Tsvi

    2015-01-01

    The radioactive decay of the freshly synthesized $r$-process nuclei ejected in compact binary mergers power optical/infrared macronovae (kilonovae) that follow these events. The light curves depend critically on the energy partition among the different products of the radioactive decay and this plays an important role in estimates of the amount of ejected $r$-process elements from a given observed signal. We study the energy partition and $\\gamma$-ray emission of the radioactive decay. We show that $20$-$50\\%$ of the total radioactive energy is released in $\\gamma$-rays on timescales from hours to a month. The number of emitted $\\gamma$-rays per unit energy interval has roughly a flat spectrum between a few dozen keV and $1$ MeV so that most of this energy is carried by $\\sim 1$ MeV $\\gamma$-rays. However at the peak of macronova emission the optical depth of the $\\gamma$-rays is $\\sim 0.02$ and most of the $\\gamma$-rays escape. The loss of these $\\gamma$-rays reduces the heat deposition into the ejecta and h...

  10. Enrichment history of r-process elements shaped by a merger of neutron star pairs

    E-Print Network [OSTI]

    Tsujimoto, Takuji

    2014-01-01

    The origin of r-process elements remains unidentified and still puzzles us. The recent discovery of evidence for the ejection of r-process elements from a short-duration gamma-ray burst singled out neutron star mergers (NSMs) as their origin. In contrast, core-collapse supernovae are ruled out as the main origin of heavy r-process elements (A>110) by recent numerical simulations. However, the properties characterizing NSM events - their rarity and high yield of r-process elements per event - have been claimed to be incompatible with the observed stellar records on r-process elements in the Galaxy. We add to this picture with our results, which show that the observed constant [r-process/H] ratio in faint dwarf galaxies and one star unusually rich in r-process in the Sculptor galaxy agree well with this rarity of NSM events. Furthermore, we found that a large scatter in the abundance ratios of r-process elements to iron in the Galactic halo can be reproduced by a scheme that incorporates an assembly of various ...

  11. THE BURST CLUSTER: DARK MATTER IN A CLUSTER MERGER ASSOCIATED WITH THE SHORT GAMMA-RAY BURST, GRB 050509B

    SciTech Connect (OSTI)

    Dahle, H.; Sarazin, C. L.; Lopez, L. A.; Kouveliotou, C.; Rol, E.; Van der Horst, A. J.; Wijers, R. A. M. J.; Fynbo, J.; Michalowski, M. J.; Burrows, D. N.; Grupe, D.; Gehrels, N.

    2013-07-20

    We have identified a merging galaxy cluster with evidence of two distinct subclusters. The X-ray and optical data suggest that the subclusters are presently moving away from each other after closest approach. This cluster merger was discovered from observations of the first well-localized short-duration gamma-ray burst (GRB), GRB 050509B. The Swift/Burst Alert Telescope error position of the source is coincident with a cluster of galaxies ZwCl 1234.0+02916, while the subsequent Swift/X-Ray Telescope localization of the X-ray afterglow found the GRB coincident with 2MASX J12361286+2858580, a giant red elliptical galaxy in the cluster. Deep multi-epoch optical images were obtained in this field to constrain the evolution of the GRB afterglow, including a total of 27,480 s exposure in the F814W band with Hubble Space Telescope Advanced Camera for Surveys, among the deepest imaging ever obtained toward a known galaxy cluster in a single passband. We perform a weak gravitational lensing analysis based on these data, including mapping of the total mass distribution of the merger system with high spatial resolution. When combined with Chandra X-ray Observatory Advanced CCD Imaging Spectrometer and Swift/XRT observations, we are able to investigate the dynamical state of the merger to better understand the nature of the dark matter component. Our weak gravitational lensing measurements reveal a separation of the X-ray centroid of the western subcluster from the center of the mass and galaxy light distributions, which is somewhat similar to that of the famous 'Bullet cluster', and we conclude that this 'Burst cluster' adds another candidate to the previously known merger systems for determining the nature of dark matter, as well as for studying the environment of a short GRB. Finally, we discuss potential connections between the cluster dynamical state and/or matter composition, and compact object mergers, which is currently the leading model for the origin of short GRBs. We also present our results from a weak-lensing survey based on archival Very Large Telescope images in the areas of five other short GRBs, which do not provide any firm detections of mass concentrations representative of rich clusters.

  12. IMPROVING ENERGY EFFICIENCY AND REDUCING COSTS IN THE DRINKING WATER SUPPLY INDUSTRY: An ENERGY STAR Resource Guide for Energy and Plant Managers

    E-Print Network [OSTI]

    Brown, Moya Melody, Camilla Dunham Whitehead, Rich

    2011-01-01

    Best Practices for Energy- Efficient Buildings. Funded by2000. Emerging Energy-Efficient Industrial Technologies.American Council for an Energy- Efficient Economy (ACEEE)

  13. Best Practices - and Practices to Avoid

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity ofkandz-cm11 Outreach Home Room News PublicationsAudits & InspectionsBeryllium and ChronicBest Practices Best Practices

  14. Mechanical and Industrial Engineering Industry Advisory Board University of Massachusetts Amherst

    E-Print Network [OSTI]

    Mountziaris, T. J.

    9/13/2007 Mechanical and Industrial Engineering Industry Advisory Board University of Massachusetts Amherst Department of Mechanical and Industrial Engineering About the Mechanical and Industrial Engineering Industry Advisory Board The purpose of the Mechanical and Industrial Engineering Industry Advisory

  15. Best available practices for LNG fueling of fleet vehicles

    SciTech Connect (OSTI)

    Midgett, D.E. II; Echterhoff, L.W. [M.W. Kellogg Co., Houston, TX (United States); Oppenheimer, A.J. [Gas Research Inst., Chicago, IL (United States)

    1996-12-31

    For many years, natural gas has been promoted as a preferred alternative vehicle fuel. There are a variety of incentives to use natural gas including: improving national security by reducing reliance on foreign oil imports, meeting stringent air emissions guidelines, and utilizing a lower-cost fuel which is in ample domestic supply. Although liquefied natural gas (LNG) was first demonstrated as a vehicle fuel in 1965, compressed natural gas (CNG) has been the fuel with the widest use to date. However, LNG is now gaining popularity as a vehicle fuel because of its higher energy density and transportability. Known LNG projects were polled to determine a list of representative sites. These were studied in depth. Data gathered from the representative sites were summarized to describe current industry practices, and a consensus was formed of best available practices for the industry. A summary of the results of the industry assessment is presented here. Problems and successes of the industry are candidly discussed. The full results of this work and other related studies will be made available to the industry as part of GRI`s ``Best Practices for Natural Gas Transit and Fleet Operations``. The purpose of these documents is to provide the LNG vehicle industry with design and operating information, which, in turn, will improve the safety and benefits of using natural gas vehicles (NGV).

  16. 1 Industrial Electron Accelerators type ILU for Industrial Technologies

    E-Print Network [OSTI]

    1 Industrial Electron Accelerators type ILU for Industrial Technologies The present work describes industrial electron accelerators of the ILU family. Their main parameters, design, principle of action the pulse linear accelerators type ILU are developed and supplied to the industry. The ILU machines

  17. industrial & systems Industrial and Systems engineers use engineering

    E-Print Network [OSTI]

    Rohs, Remo

    78 industrial & systems Industrial and Systems engineers use engineering and business principles companies compete in today's global marketplace. The Industrial and Systems engineer's task is to take to introduce the philosophy, subject matter, aims, goals, and techniques of industrial and systems engineering

  18. industrial & systems Industrial and Systems engineers use engineering

    E-Print Network [OSTI]

    Rohs, Remo

    78 industrial & systems Industrial and Systems engineers use engineering and business principles companies compete in today's global marketplace. The Industrial and Systems engineer's task is to take s e n G i n e e r i n G ( i s e ) ISE 105 Introduction to Industrial and Systems Engineering (2, Fa

  19. MIT and Building/Construction & Related Industries MIT Industry Brief

    E-Print Network [OSTI]

    Kastner, Marc A.

    MIT and Building/Construction & Related Industries MIT Industry Brief MIT's Industrial Liaison-617-253-2691, e-mail us at liaison@ilp.mit.edu, or visit http://ilp.mit.edu. MIT and Building and education on topics important to build- ing, construction, and related areas and industries such as

  20. Radioactive Material Transportation Practices

    Broader source: Directives, Delegations, and Requirements [Office of Management (MA)]

    2002-09-23

    Establishes standard transportation practices for Departmental programs to use in planning and executing offsite shipments of radioactive materials including radioactive waste. Does not cancel other directives.

  1. A Nonproliferation Third Party for Dual-use Industries - Legal Issues for Consideration

    SciTech Connect (OSTI)

    Morris, Frederic A.; Seward, Amy M.; Kurzrok, Andrew J.

    2012-10-01

    This paper discusses legal issues in connection with formation of a “third party” to facilitate information sharing and best practices by companies in nuclear-related dual-use industries.

  2. Foundations for Efficiency: Industrial Energy Efficiency Program Structures in the U.S. and Canada 

    E-Print Network [OSTI]

    Trombley, D.; Taylor, B.

    2013-01-01

    as clearly as possible the lessons learned in program design and implementation in key states and provinces. These findings are presented for the practical consideration of governments and utilities in their efforts to develop or upgrade their own industrial...

  3. Geologic carbon dioxide sequestration from the Mexican oil industry : an action plan

    E-Print Network [OSTI]

    Lacy, Rodolfo

    2005-01-01

    Climate change has become an important focus of international environmental negotiations. In response, global energy corporations have been looking for practical ways of reducing their industrial carbon dioxide (CO?) ...

  4. Cultural production and politics of the digital games industry: the case of independent game production 

    E-Print Network [OSTI]

    Guevara Villalobos, Orlando; Villalobos, Orlando Guevara

    2013-11-27

    This thesis sheds light on the social relationships, work practices and identities that shape the small scale sector of independent game production. Harnessing elements of the Production of Culture and Cultural Industries/Work ...

  5. The changing structure of the US coal industry: An update, July 1993

    SciTech Connect (OSTI)

    Not Available

    1993-07-29

    Section 205(a)(2) of the Department of Energy Organization Act of 1977 requires the Administrator of the Energy Information Administration (EIA) to carry out a central, comprehensive, and unified energy data and information program that will collect, evaluate, assemble, analyze, and disseminate data and information relevant to energy resources, reserves, production, demand, technology, and related economic and statistical information. The purpose of this report is to provide a comprehensive overview of changes in the structure of the US coal industry between 1976 and 1991. The structural elements examined include the number of mines, average mine size, the size distribution of mines, and the size distribution of coal firms. The report measures changes in the market shares of the largest coal producers at the national level and in various regions. The Central Appalachian low-sulfur coal market is given special attention, and the market for coal reserves is examined. A history of mergers in the coal industry is presented, and changes in the proportions of US coal output that are produced by various types of companies, including foreign-controlled firms, are described. Finally, the impact of post-1991 mergers on the structure of the industry is estimated. The legislation that created the EIA vested the organization with an element of statutory independence. The EIA does not take positions on policy questions. The EIA`s responsibility is to provide timely, high-quality information and to perform objective, credible analyses in support of deliberations by both public and private decisionmakers. Accordingly, this report does not purport to represent the policy positions of the US Department of Energy or the Administration.

  6. MAGENTA Technology: MultiAgent Systems for Industrial Logistics

    E-Print Network [OSTI]

    Woolridge, Mike

    MAGENTA Technology: Multi­Agent Systems for Industrial Logistics Jon Himoff 1 Petr Skobelev 1, and illustrate its practical use by describing a field­tested application in the area of logistics for debugging systems. The application we describe is a field­ tested scheduling/logistics system for Tankers

  7. Knowledge-Intensive Work in the Oil and Gas Industry

    E-Print Network [OSTI]

    Knowledge-Intensive Work in the Oil and Gas Industry: A Case Study Thesis for the degree collaborative work practices within a large international oil and gas company (OGC). The work is founded empirical findings, we argue that in knowledge-intensive, interdisciplinary work such as oil and gas

  8. Industrial ecology at Lawrence Livermore National Laboratory summary statement

    SciTech Connect (OSTI)

    Gilmartin, T.J.

    1996-06-04

    At Livermore our hope and our intention is to make important contributions to global sustainability by basing both our scientific and technological research and our business practices on the principles of industrial ecology. Current efforts in the following fields are documented: global security, global ecology, energy for transportation, fusion energy, materials sciences, environmental technology, and bioscience.

  9. Clean Energy Manufacturing Initiative Industrial Efficiency and Energy Productivity

    SciTech Connect (OSTI)

    Selldorff, John; Atwell, Monte

    2014-09-23

    Industrial efficiency and low-cost energy resources are key components to increasing U.S. energy productivity and makes the U.S. manufacturing sector more competitive. Companies find a competitive advantage in implementing efficiency technologies and practices, and technologies developed and manufactured in the U.S. enable greater competitiveness economy-wide.

  10. --MECH 505 (Section 201) --INDUSTRIAL and ENVIRONMENTAL ACOUSTICS AND VIBRATION

    E-Print Network [OSTI]

    Phani, A. Srikantha

    -- MECH 505 (Section 201) -- INDUSTRIAL and ENVIRONMENTAL ACOUSTICS AND VIBRATION Instructor: Dr and Noise Control, Harris (MH and Sedgwick) Noise and Vibration Control Engineering, Beranek (MH and Sedgwick) "Noise Control: Principles and Practice" (MH) Shock and Vibration Handbook, Harris and Crede (MH

  11. Clean Energy Manufacturing Initiative Industrial Efficiency and Energy Productivity

    ScienceCinema (OSTI)

    Selldorff, John; Atwell, Monte

    2014-12-03

    Industrial efficiency and low-cost energy resources are key components to increasing U.S. energy productivity and makes the U.S. manufacturing sector more competitive. Companies find a competitive advantage in implementing efficiency technologies and practices, and technologies developed and manufactured in the U.S. enable greater competitiveness economy-wide.

  12. Pollution prevention in the pharmaceutical industry

    SciTech Connect (OSTI)

    Venkataramani, E.S.

    1995-09-01

    A clear understanding of the process, reaction pathways, process equipment, operational requirements, and waste stream characteristics are critical for the evaluation, selection, and implementation of pollution prevention in the pharmaceutical industry. Although pollution prevention opportunities are always preferred over treatment and disposal techniques, consideration of a full range of options--including at-source treatments and disposal--is a practical necessity to ensure protection of the environment using best available technology. General housekeeping can also play a major role in waste minimization. Waste minimization and pollution prevention are not new concepts for the pharmaceutical industry. But the confidential and highly competitive nature of the business stands in the way of disseminating information regarding specific activities in this area. The pharmaceutical industry could probably do much better in this respect. Successful implementation of waste minimization in the pharmaceutical industry requires that a process modification not have a negative impact on product quality. Recovered and recycled materials must meet quality specifications that are similar to those for virgin raw materials.

  13. UAIEE and Industrial Assessment Centers

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

    55-62011| Industrial Assessment Centers * Started in 1976 * Currently 26 Centers across the US * Almost...

  14. Solar industrial process heat

    SciTech Connect (OSTI)

    Lumsdaine, E.

    1981-04-01

    The aim of the assessment reported is to candidly examine the contribution that solar industrial process heat (SIPH) is realistically able to make in the near and long-term energy futures of the United States. The performance history of government and privately funded SIPH demonstration programs, 15 of which are briefly summarized, and the present status of SIPH technology are discussed. The technical and performance characteristics of solar industrial process heat plants and equipment are reviewed, as well as evaluating how the operating experience of over a dozen SIPH demonstration projects is influencing institutional acceptance and economoc projections. Implications for domestic energy policy and international implications are briefly discussed. (LEW)

  15. Industrial Heat Recovery - 1982 

    E-Print Network [OSTI]

    Csathy, D.

    1982-01-01

    Industrial Research HTFS Re search Programme HTFS/1S/R19, "Dryout and Flow in Horizontal and Horizontal Hairpin Tubes". 6 l\\rnerican Boiler I1anufacturers Assoc iation, "Lexicon, Boiler & Auxiliary Eauinment", 7 G:t=iffith P., book of I:eat senow N... RECOVERY - 1982 by Denis Csathy, Deltak Corn,oration, !1inneapolis, 11N Two years ago I summarized 20 years of ex perience on Industrial Heat Recovery for the Energy-source Technology Conference and Exhibition held in New Orleans, Louisiana. l...

  16. GRB 050911: a black hole - neutron star merger or a naked GRB

    E-Print Network [OSTI]

    K. L. Page; A. R. King; A. J. Levan; P. T. O'Brien; J. P Osborne; S. D. Barthelmy; A. P. Beardmore; D. N. Burrows; S. Campana; N. Gehrels; J. Graham; M. R. Goad; O. Godet; Y. Kaneko; J. A. Kennea; C. B. Markwardt; D. E. Reichart; T. Sakamoto; N. R. Tanvir

    2005-12-14

    GRB 050911, discovered by the Swift Burst Alert Telescope, was not seen 4.6 hr later by the Swift X-ray Telescope, making it one of the very few X-ray non-detections of a Gamma-Ray Burst (GRB) afterglow at early times. The gamma-ray light-curve shows at least three peaks, the first two of which (~T_0 - 0.8 and T_0 + 0.2 s, where T_0 is the trigger time) were short, each lasting 0.5 s. This was followed by later emission 10-20 s post-burst. The upper limit on the unabsorbed X-ray flux was 1.7 x 10^-14 erg cm^-2 s^-1 (integrating 46 ks of data taken between 11 and 18 September), indicating that the decay must have been rapid. All but one of the long bursts detected by Swift were above this limit at ~4.6 hr, whereas the afterglows of short bursts became undetectable more rapidly. Deep observations with Gemini also revealed no optical afterglow 12 hr after the burst, down to r=24.0 (5-sigma limit). We speculate that GRB 050911 may have been formed through a compact object (black hole-neutron star) merger, with the later outbursts due to a longer disc lifetime linked to a large mass ratio between the merging objects. Alternatively, the burst may have occured in a low density environment, leading to a weak, or non-existent, forward shock - the so-called 'naked GRB' model.

  17. Strange filamentary structures ("fireballs") around a merger galaxy in the Coma cluster of galaxies

    E-Print Network [OSTI]

    M. Yoshida; M. Yagi; Y. Komiyama; H. Furusawa; N. Kashikawa; Y. Koyama; H. Yamanoi; T. Hattori; S. Okamura

    2008-07-16

    We found an unusual complex of narrow blue filaments, bright blue knots, and H-alpha emitting filaments and clouds, which morphologically resembled a complex of ``fireballs,'' extending up to 80 kpc south from an E+A galaxy RB199 in the Coma cluster. The galaxy has a highly disturbed morphology indicative of a galaxy--galaxy merger remnant. The narrow blue filaments extend in straight shapes toward the south from the galaxy, and several bright blue knots are located at the southern ends of the filaments. The Rc band absolute magnitudes, half light radii and estimated masses of the bright knots are -12 - -13 mag, 200 - 300 pc and 10^6-7 Msolar, respectively. Long, narrow H-alpha emitting filaments are connected at the south edge of the knots. The average color of the fireballs is B - Rc = 0.5, which is bluer than RB199 (B - R = 0.99), suggesting that most of the stars in the fireballs were formed within several times 10^8 yr. The narrow blue filaments exhibit almost no H-alpha emission. Strong H-alpha and UV emission appear in the bright knots. These characteristics indicate that star formation recently ceased in the blue filaments and now continues in the bright knots. The gas stripped by some mechanism from the disk of RB199 may be traveling in the intergalactic space, forming stars left along its trajectory. The most plausible fireball formation mechanism is ram pressure stripping by high-speed collision between the galaxy and the hot intra-cluster medium. The fireballs may be a snapshot of diffuse intra-cluster population formation, or halo star population formation in a cluster galaxy.

  18. Modeling Equal and Unequal Mass Binary Neutron Star Mergers Using Public Codes

    E-Print Network [OSTI]

    Roberto De Pietri; Alessandra Feo; Francesco Maione; Frank Löffler

    2015-10-05

    We present three-dimensional simulations of the dynamics of binary neutron star (BNS) mergers from the late stage of the inspiral process up to $\\sim 20$ ms after the system has merged, either to form a hyper-massive neutron star (NS) or a rotating black hole (BH). We investigate five equal-mass models of total gravitational mass $2.207$, $2.373$, $2.537$, $2.697$ and $2.854 M_\\odot$, respectively, and four unequal mass models with $M_{\\mathrm{ADM}}\\simeq 2.53\\ M_\\odot$ and $q\\simeq 0.94$, $0.88$, $0.82$, and $0.77$ (where $q = M^{(1)}/M^{(2)}$ is the mass ratio). We use a semi-realistic equation of state (EOS) namely, the seven-segment piece-wise polytropic SLyPP with a thermal component given by $\\Gamma_{th} = 1.8$. We have also compared the resulting dynamics (for one model) using both, the BSSN-NOK and CCZ4 methods for the evolution of the gravitational sector, and also different reconstruction methods for the matter sector, namely PPM, WENO and MP5. Our results show agreement and high resolution, but superiority of BSSN-NOK supplemented by WENO reconstruction at lower resolutions. One of the important characteristics of the present investigation is that, for the first time, this has been done using only publicly available open source software, in particular, the Einstein Toolkit code deployed for the dynamical evolution and the LORENE code for the generation of the initial models. All of the source code and parameters used for the simulations have been made publicly available. This not only makes it possible to re-run and re-analyze our data; it also enables others to directly build upon this work for future research.

  19. DIVERSITY OF SHORT GAMMA-RAY BURST AFTERGLOWS FROM COMPACT BINARY MERGERS HOSTING PULSARS

    SciTech Connect (OSTI)

    Holcomb, Cole; Ramirez-Ruiz, Enrico; De Colle, Fabio; Montes, Gabriela [Department of Astronomy and Astrophysics, University of California, Santa Cruz, CA 95064 (United States)

    2014-07-20

    Short-duration gamma-ray bursts (sGRBs) are widely believed to result from the mergers of compact binaries. This model predicts an afterglow that bears the characteristic signatures of a constant, low-density medium, including a smooth prompt-afterglow transition, and a simple temporal evolution. However, these expectations are in conflict with observations for a non-negligible fraction of sGRB afterglows. In particular, the onset of the afterglow phase for some of these events appears to be delayed and, in addition, a few of them exhibit late-time rapid fading in their light curves. We show that these peculiar observations can be explained independently of ongoing central engine activity if some sGRB progenitors are compact binaries hosting at least one pulsar. The Poynting flux emanating from the pulsar companion can excavate a bow-shock cavity surrounding the binary. If this cavity is larger than the shock deceleration length scale in the undisturbed interstellar medium, then the onset of the afterglow will be delayed. Should the deceleration occur entirely within the swept-up thin shell, a rapid fade in the light curve will ensue. We identify two types of pulsar that can achieve the conditions necessary for altering the afterglow: low-field, long-lived pulsars, and high-field pulsars. We find that a sizable fraction (?20%-50%) of low-field pulsars are likely to reside in neutron star binaries based on observations, while their high-field counterparts are not. Hydrodynamical calculations motivated by this model are shown to be in good agreement with observations of sGRB afterglow light curves.

  20. Development of Offshore Wind Recommended Practice for U.S. Waters: Preprint

    SciTech Connect (OSTI)

    Musial, W. D.; Sheppard, R. E.; Dolan, D.; Naughton, B.

    2013-04-01

    This paper discusses how the American Petroleum Institute oil and gas standards were interfaced with International Electrotechnical Commission and other wind turbine and offshore industry standards to provide guidance for reliable engineering design practices for offshore wind energy systems.

  1. AWEA O&M Recommended Practices Series Part VII: Wind Turbine Gear Lubricant Flushing Procedures

    Broader source: Energy.gov [DOE]

    The AWEA Operations and Maintenance Recommended Practice 101 was developed to provide guidance to the wind industry regarding proper methods of wind turbine gearbox flushing and oil conversion...

  2. Development of Best Practices for Shell Egg Disinfection Based upon Efficacy and Egg Quality 

    E-Print Network [OSTI]

    Al-Ajeeli, Morouj N

    2013-12-04

    This study was conducted to compare current commercial egg sanitizers to new technologies developed to improve egg safety and quality. Objectives included: 1) conduct a survey on current industry egg washing practices along with a microbial survey...

  3. ITP Metal Casting: Theoretical/Best Practice Energy Use in Metalcasting Operations

    Office of Energy Efficiency and Renewable Energy (EERE)

    This study determined the theoretical minimum energy requirements for melting processes for all ferrous and noferrous engenieering alloys. Also the report details the Best Practice energy consumption for the industry.

  4. WOSMIP II- Workshop on Signatures of Medical and Industrial Isotope Production

    SciTech Connect (OSTI)

    Matthews, Murray; Achim, Pascal; Auer, M.; Bell, Randy; Bowyer, Ted W.; Braekers, Damien; Bradley, Ed; Briyatmoko, Budi; Berglund, Helena; Camps, Johan; Carranza, Eduardo C.; Carty, Fitz; DeCaire, Richard; Deconninck, Benoit; DeGeer, Lars E.; Druce, Michael; Friese, Judah I.; Hague, Robert; Hoffman, Ian; Khrustalev, Kirill; Lucas, John C.; Mattassi, G.; Mattila, Aleski; Nava, Elisabetta; Nikkinin, Mika; Papastefanou, Constantin; Piefer, Gregory R.; Quintana, Eduardo; Ross, Ole; Rotty, Michel; Sabzian, Mohammad; Saey, Paul R.; Sameh, A. A.; Safari, M.; Schoppner, Michael; Siebert, Petra; Unger, Klaus K.; Vargas, Albert

    2011-11-01

    Medical and industrial fadioisotopes are fundamental tools used in science, medicine and industry with an ever expanding usage in medical practice where their availability is vital. Very sensitive environmental radionuclide monitoring networks have been developed for nuclear-security-related monitoring [particularly Comprehensive Test-Ban-Treaty (CTBT) compliance verification] and are now operational.

  5. Automotive Turbocharging: Industrial Requirements and Technology...

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

    Turbocharging: Industrial Requirements and Technology Developments Automotive Turbocharging: Industrial Requirements and Technology Developments Significant improvements in...

  6. Industrial Retrofits are Possible 

    E-Print Network [OSTI]

    Stobart, E. W.

    1990-01-01

    industries and our surveys to date have shown savings of 6% in electricity and 11% in natural gas. Over the first two years of the program, individual plants have or are intending to implement more than half of the energy analysis recommendations....

  7. for Industry Manufacturing

    E-Print Network [OSTI]

    helps to reduce risk and accelerate the development and deployment of innovative energy-efficient Energy Research Nation's broadest portfolio of energy generation and efficiency programs ScienceA National Resource for Industry Manufacturing Demonstration Facility #12;As the nation's premier

  8. Industry Partners Panel

    Broader source: Energy.gov [DOE]

    Industry Panel presenters include: Michael G. Andrew, Director - Academic and Technical Programs, Advanced Products and Materials, Johnson Controls Power Solutions Michael A. Fetcenko, Vice President and Managing Director, BASF Battery Materials – Ovonic, BASF Corporation Adam Kahn, Founder and CEO, AKHAN Technologies, Inc. Stephen E. Zimmer, Executive Director, United States Council for Automotive Research (USCAR)

  9. Mining information from binary black hole mergers: a comparison of estimation methods for complex exponentials in noise

    E-Print Network [OSTI]

    Emanuele Berti; Vitor Cardoso; Jose A. Gonzalez; Ulrich Sperhake

    2007-06-17

    The ringdown phase following a binary black hole merger is usually assumed to be well described by a linear superposition of complex exponentials (quasinormal modes). In the strong-field conditions typical of a binary black hole merger, non-linear effects may produce mode coupling. Artificial mode coupling can also be induced by the black hole's rotation, if the radiation field is expanded in terms of spin-weighted spherical (rather than spheroidal) harmonics. Observing deviations from linear black hole perturbation theory requires optimal fitting techniques to extract ringdown parameters from numerical waveforms, which are inevitably affected by errors. So far, non-linear least-squares fitting methods have been used as the standard workhorse to extract frequencies from ringdown waveforms. These methods are known not to be optimal for estimating parameters of complex exponentials. Furthermore, different fitting methods have different performance in the presence of noise. The main purpose of this paper is to introduce the gravitational wave community to modern variations of a linear parameter estimation technique first devised in 1795 by Prony: the Kumaresan-Tufts and matrix pencil methods. Using "test" damped sinusoidal signals in Gaussian white noise we illustrate the advantages of these methods, showing that they have variance and bias at least comparable to standard non-linear least-squares techniques. Then we compare the performance of different methods on unequal-mass binary black hole merger waveforms. The methods we discuss should be useful both theoretically (to monitor errors and search for non-linearities in numerical relativity simulations) and experimentally (for parameter estimation from ringdown signals after a gravitational wave detection).

  10. The interplay of disk wind and dynamical ejecta in the aftermath of neutron star - black hole mergers

    E-Print Network [OSTI]

    Rodrigo Fernández; Eliot Quataert; Josiah Schwab; Daniel Kasen; Stephan Rosswog

    2015-02-04

    We explore the evolution of the different ejecta components generated during the merger of a neutron star (NS) and a black hole (BH). Our focus is the interplay between material ejected dynamically during the merger, and the wind launched on a viscous timescale by the remnant accretion disk. These components are expected to contribute to an electromagnetic transient and to produce r-process elements, each with a different signature when considered separately. Here we introduce a two-step approach to investigate their combined evolution, using two- and three-dimensional hydrodynamic simulations. Starting from the output of a merger simulation, we identify each component in the initial condition based on its phase space distribution, and evolve the accretion disk in axisymmetry. The wind blown from this disk is injected into a three-dimensional computational domain where the dynamical ejecta is evolved. We find that the wind can suppress fallback accretion on timescales longer than ~100 ms. Due to self-similar viscous evolution, the disk accretion at late times nevertheless approaches a power-law time dependence $\\propto t^{-2.2}$. This can power some late-time GRB engine activity, although the available energy is significantly less than in traditional fallback models. Inclusion of radioactive heating due to the r-process does not significantly affect the fallback accretion rate or the disk wind. We do not find any significant modification to the wind properties at large radius due to interaction with the dynamical ejecta. This is a consequence of the different expansion velocities of the two components.

  11. BEST PRACTICES RESEARCH 2010 Frost & Sullivan 1 "We Accelerate Growth"

    E-Print Network [OSTI]

    van Vliet, Lucas J.

    BEST PRACTICES RESEARCH © 2010 Frost & Sullivan 1 "We Accelerate Growth" New Product Innovation & Sullivan is proud to present the 2010 EU New Product Innovation Award in Preclinical Imaging to Milabs, based in Utrecht, Netherlands. Significance of the New Product Innovation Award Key Industry Challenges

  12. Incentivizing Distributed Solar: Best Practices (Presentation)

    SciTech Connect (OSTI)

    Bird, L.; Reger, A.

    2013-06-01

    The presentation discussed findings of a recent NREL technical report on best practices for designing and implementing incentives for small and mid-sized residential and commercial distributed solar energy projects. Topics covered included: factors to consider in setting and modifying incentive levels over time, differentiating incentives to encourage various market segments, and administrative issues such as providing equitable access to incentives and customer protection. In addition, the presentation explored how incentive programs can be designed to respond to changing market conditions while attempting to provide a longer-term and stable environment for the solar industry. The findings of the report were based on interviews with program administrators, regulators, and industry representatives as well as data from numerous incentive programs nationally, particularly the largest and longest-running programs.

  13. Practical image based lighting 

    E-Print Network [OSTI]

    Lee, Jaemin

    2003-01-01

    information is lighting. Image based lighting that is developed to recover illumination information of the real world from photographs has recently been popular in computer graphics. In this thesis we present a practical image based lighting method. Our...

  14. Web Writing Best Practices

    Broader source: Energy.gov [DOE]

    In addition to Web writing requirements, follow these best practices to help you create user friendly content for Office of Energy Efficiency and Renewable Energy (EERE) websites and applications.

  15. Essays in the industrial organization of the pharmaceutical industry

    E-Print Network [OSTI]

    Shapiro, Bradley T. (Bradley Thomas)

    2014-01-01

    This dissertation comprises of three chapters, each exploring different issues in the industrial organization of the pharmaceutical industry. In the first chapter, I study the effects of television advertising of antidepressants ...

  16. MIT and the Building/Construction Industries MIT Industry Brief

    E-Print Network [OSTI]

    Herr, Hugh

    /construction and related industries such as: · Building, infrastructure · Materials, energy · Architecture, design · Smart technologies, sensor systems · Housing, urban development/planning, real estate Following are brief structures, materials, industrialized building systems, energy and lighting in buildings, air quality control

  17. Innovative New Industrial Technologies: An Industry/DOE Joint Endeavor 

    E-Print Network [OSTI]

    Gross, T. J.

    1986-01-01

    The Department of Energy’s Office of Industrial Programs supports research and development leading to improved energy efficiency and greater overall productivity in the industrial sector. Its basic strategy is a program of cost-shared R...

  18. Transforming the Oil Industry into the Energy Industry

    E-Print Network [OSTI]

    Sperling, Daniel; Yeh, Sonia

    2009-01-01

    Transforming the Oil Industry into the Energy Industry BYculprit. It consumes half the oil used in the world andconsuming two thirds of the oil and causing about one third

  19. ENGINEERINGNEWS When Industry

    E-Print Network [OSTI]

    McGaughey, Alan

    without paying the full cost of research and at a lower risk. This symbiotic relationship and the virtuous resources in more lucrative enterprises that were created because of innovation in universities and companies, and the entrepreneurial spirit that put the innovation into practice. The U.S. Government

  20. SymposiumandIndustrialAffiliatesProgramLightinAction Industrial Affiliates Program

    E-Print Network [OSTI]

    Van Stryland, Eric

    SymposiumandIndustrialAffiliatesProgramLightinAction #12;Industrial Affiliates Program Friday, 8 Session I Abstract: Recently Additive Manufacturing (AM) has been hailed as the "third industrial revolution" by Economist magazine [April -2012]. Precision of the product manufactured by AM largely depends

  1. Coal industry annual 1997

    SciTech Connect (OSTI)

    1998-12-01

    Coal Industry Annual 1997 provides comprehensive information about US coal production, number of mines, prices, productivity, employment, productive capacity, and recoverable reserves. US Coal production for 1997 and previous years is based on the annual survey EIA-7A, Coal Production Report. This report presents data on coal consumption, coal distribution, coal stocks, coal prices, and coal quality for Congress, Federal and State agencies, the coal industry, and the general public. Appendix A contains a compilation of coal statistics for the major coal-producing States. This report includes a national total coal consumption for nonutility power producers that are not in the manufacturing, agriculture, mining, construction, or commercial sectors. 14 figs., 145 tabs.

  2. PRACTICE OF MEDICINE III PRACTICE OF MEDICINE IV PRACTICE OF MEDICINE V

    E-Print Network [OSTI]

    Puglisi, Joseph

    PRACTICE OF MEDICINE III PRACTICE OF MEDICINE IV PRACTICE OF MEDICINE V PRACTICE OF MEDICINE I PRACTICE OF MEDICINE II SpringWinterAutumn Year3,4,[5] Year2 SCHOLARLY CONCENTRATIONS Year1 · Cells to Tissues · Molecular Foundations of Medicine · Applied Biochemistry · Genetics · Development & Disease

  3. Electrotechnologies in Process Industries 

    E-Print Network [OSTI]

    Amarnath, K. R.

    1989-01-01

    applications of innovative electrotechnologies in these sectors. APPLICATIONS Electricity is predominantly used in three ways in process industries: 1. Motor Drives 2. Process Heating 3. Electrochemical Processes Motor drives are mainly used in prime..., infrared, and ultraviolet heating have found a variety of applications, and more are under development. ElectrOChemical processes for separation and synthesis (such as Chlor-Alkali production) are significant users of electricity. New processes...

  4. Industrial energy savers

    SciTech Connect (OSTI)

    Not Available

    1986-01-01

    This is a series of technical bulletins developed as a quick reference to various energy-saving technologies. Each bulletin provides information on economics, benefits, and applications. Topics are chiller optimization and energy-efficient chillers, evaporative cooling, economizer cycles, thermal energy storage for cooling systems, boiler room energy conservation, cogeneration, industrial heat pumps, steam trap maintenance, energy-efficient motors, and variable speed drive motors.

  5. Industrial Analytics Corporation

    SciTech Connect (OSTI)

    Industrial Analytics Corporation

    2004-01-30

    The lost foam casting process is sensitive to the properties of the EPS patterns used for the casting operation. In this project Industrial Analytics Corporation (IAC) has developed a new low voltage x-ray instrument for x-ray radiography of very low mass EPS patterns. IAC has also developed a transmitted visible light method for characterizing the properties of EPS patterns. The systems developed are also applicable to other low density materials including graphite foams.

  6. Industrial Technical Assistance

    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 Data Center Home Page on Delicious RankADVANCED MANUFACTURING OFFICE INDUSTRIAL TECHNICAL ASSISTANCE Supports the deployment of energy efficient

  7. Industrial Equipment Impacts Infrastructure

    Energy Savers [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 on Google Bookmark EERE: Alternative Fuels Data Center Home Page on DeliciousMathematicsEnergy HeadquartersFuelBConservation StandardsEnergy In2008DepartmentIndustrial

  8. The impact of government policies on industrial evolution : the case of China's automotive industry

    E-Print Network [OSTI]

    Luo, Jianxi

    2006-01-01

    Governmental industrial policies have great influence on industrial performances and development trajectories. The infant industry theory has been the dominating theoretical foundation of the industrial policies in developing ...

  9. Academic good practice a practical guide The principles of academic good practice go beyond understanding and avoiding plagiarism,

    E-Print Network [OSTI]

    Oxford, University of

    Academic good practice ­ a practical guide The principles of academic good practice go beyond discipline. Contents Academic good practice ­ a practical guide work. This section contains information and advice on attaining academic good practice, including

  10. EARLY X-RAY AND OPTICAL AFTERGLOW OF GRAVITATIONAL WAVE BURSTS FROM MERGERS OF BINARY NEUTRON STARS

    SciTech Connect (OSTI)

    Zhang Bing [Kavli Institute of Astronomy and Astrophysics, Peking University, Beijing 100871 (China)

    2013-01-20

    Double neutron star mergers are strong sources of gravitational waves. The upcoming advanced gravitational wave detectors are expected to make the first detection of gravitational wave bursts (GWBs) associated with these sources. Proposed electromagnetic counterparts of a GWB include a short gamma-ray burst, an optical macronova, and a long-lasting radio afterglow. Here we suggest that at least some GWBs could be followed by an early afterglow lasting for thousands of seconds, if the post-merger product is a highly magnetized, rapidly rotating, massive neutron star rather than a black hole. This afterglow is powered by dissipation of a proto-magnetar wind. The X-ray flux is estimated to be as bright as (10{sup -8}-10{sup -7}) erg s{sup -1} cm{sup -2}. The optical flux is subject to large uncertainties but could be as bright as 17th magnitude in R band. We provide observational hints of such a scenario, and discuss the challenge and strategy to detect these signals.

  11. The pre-merger impact velocity of the binary cluster A1750 from X-ray, lensing, and hydrodynamical simulations

    SciTech Connect (OSTI)

    Molnar, Sandor M. [Leung Center for Cosmology and Particle Astrophysics, National Taiwan University, Taipei 10617, Taiwan (China); Chiu, I-Non Tim [Department of Physics, Ludwig-Maximilians University, Scheinerstr 1, D-81679 Munich (Germany); Broadhurst, Tom [Department of Theoretical Physics, University of the Basque Country, E-48080 Bilbao (Spain); Stadel, Joachim G., E-mail: sandor@phys.ntu.edu.tw [Institute for Theoretical Physics, University of Zurich, 8057 Zurich (Switzerland)

    2013-12-10

    Since the discovery of the 'Bullet Cluster', several similar cases have been uncovered that suggest relative velocities well beyond the tail of high speed collisions predicted by the concordance ?CDM model. However, quantifying such post-merger events with hydrodynamical models requires a wide coverage of possible initial conditions. Here, we show that it is simpler to interpret pre-merger cases, such as A1750, where the gas between the colliding clusters is modestly affected, so that the initial conditions are clear. We analyze publicly available Chandra data confirming a significant increase in the projected X-ray temperature between the two cluster centers in A1750 consistent with our expectations for a merging cluster. We model this system with a self-consistent hydrodynamical simulation of dark matter and gas using the FLASH code. Our simulations reproduce well the X-ray data and the measured redshift difference between the two clusters in the phase before the first core passage viewed at an intermediate projection angle. The deprojected initial relative velocity derived using our model is 1460 km s{sup –1}, which is considerably higher than the predicted mean impact velocity for simulated massive haloes derived by recent ?CDM cosmological simulations, but is within the allowed range. Our simulations demonstrate that such systems can be identified using a multi-wavelength approach and numerical simulations, for which the statistical distribution of relative impact velocities may provide a definitive examination of a broad range of dark matter scenarios.

  12. First measurement of HI 21cm emission from a GRB host galaxy indicates a post-merger system

    E-Print Network [OSTI]

    Arabsalmani, Maryam; Zwaan, Martin; Kanekar, Nissim; Micha?owski, Micha? J

    2015-01-01

    We report the detection and mapping of atomic hydrogen in HI 21cm emission from ESO 184-G82, the host galaxy of the gamma ray burst 980425. This is the first instance where HI in emission has been detected from a galaxy hosting a gamma ray burst. ESO 184-G82 is an isolated galaxy and contains a Wolf-Rayet region close to the location of the gamma ray burst and the associated supernova, SN 1998bw. This is one of the most luminous HII regions identified in the local Universe, with a very high inferred density of star formation. The HI 21cm observations reveal a high HI mass for the galaxy, twice as large as the stellar mass. The spatial and velocity distribution of the HI 21cm emission reveals a disturbed rotating gas disk, which suggests that the galaxy has undergone a recent minor merger that disrupted its rotation. We find that the Wolf-Rayet region and the gamma ray burst are both located in the highest HI column density region of the galaxy. We speculate that the merger event has resulted in shock compress...

  13. Testing the Modern Merger Hypothesis via the Assembly of Massive Blue Elliptical Galaxies in the Local Universe

    E-Print Network [OSTI]

    Haines, Tim; Sánchez, S F; Tremonti, C; Rudnick, G

    2015-01-01

    The modern merger hypothesis offers a method of forming a new elliptical galaxy through merging two equal-mass, gas-rich disk galaxies fuelling a nuclear starburst followed by efficient quenching and dynamical stabilization. A key prediction of this scenario is a central concentration of young stars during the brief phase of morphological transformation from highly-disturbed remnant to new elliptical galaxy. To test this aspect of the merger hypothesis, we use integral field spectroscopy to track the stellar Balmer absorption and 4000\\AA\\ break strength indices as a function of galactic radius for 12 massive (${\\rm M_{*}}\\ge10^{10}{\\rm M_{\\odot}}$), nearby (${\\rm z}\\le0.03$), visually-selected plausible new ellipticals with blue-cloud optical colours and varying degrees of morphological peculiarities. We find that these index values and their radial dependence correlate with specific morphological features such that the most disturbed galaxies have the smallest 4000\\AA\\ break strengths and the largest Balmer ...

  14. Clustering in the biotechnology industry

    E-Print Network [OSTI]

    Schoenberg, Frederic P

    2006-01-01

    the world to attract high-technology industry. The mostare attempts to create high-technology industrial clusters,institutes because high-technology firms frequently spin-off

  15. Shale Play Industry Transportation Challenges,

    E-Print Network [OSTI]

    Minnesota, University of

    Demand and Supply Factors ­Gas and Oil Commodity Pricing ­Finite Demand ­Rapid · It is three related, but yet independent industries: ­Fracture Sand Industry ­Oil ­ High volume commodi-es flows in and out of shale plays · Sand In....Oil

  16. Oklahoma Industrial Energy Management Program 

    E-Print Network [OSTI]

    Estes, C. B.; Turner, W. C.

    1980-01-01

    this, the Oklahoma Department of Energy designed a program to acquaint Oklahoma industry with the potential savings available through energy management and some basic techniques. The program is, entitled "Oklahoma Industrial Energy Management Program...

  17. Industrial Heat Pump Design Options 

    E-Print Network [OSTI]

    Gilbert, J. S.

    1985-01-01

    There are numerous industries that can incorporate heat pumps into their operations to save energy costs and payoff the investment in well under two years. Many of these industries can cut energy costs associated with evaporation by over 75...

  18. Empirical essays in industrial organization

    E-Print Network [OSTI]

    Chiou, Lesley C

    2005-01-01

    In this dissertation, I present three empirical essays that encompass topics in industrial organization. The first essay examines the degree of competition and spatial differentiation in the retail industry by exploiting ...

  19. Forest Products Industry Technology Roadmap

    SciTech Connect (OSTI)

    none,

    2010-04-01

    This document describes the forest products industry's research and development priorities. The original technology roadmap published by the industry in 1999 and was most recently updated in April 2010.

  20. Managing corporate capabilities:theory and industry approaches.

    SciTech Connect (OSTI)

    Slavin, Adam M.

    2007-02-01

    This study characterizes theoretical and industry approaches to organizational capabilities management and ascertains whether there is a distinct ''best practice'' in this regard. We consider both physical capabilities, such as technical disciplines and infrastructure, and non-physical capabilities such as corporate culture and organizational procedures. We examine Resource-Based Theory (RBT), which is the predominant organizational management theory focused on capabilities. RBT seeks to explain the effect of capabilities on competitiveness, and thus provide a basis for investment/divestment decisions. We then analyze industry approaches described to us in interviews with representatives from Goodyear, 3M, Intel, Ford, NASA, Lockheed Martin, and Boeing. We found diversity amongst the industry capability management approaches. Although all organizations manage capabilities and consider them to some degree in their strategies, no two approaches that we observed were identical. Furthermore, we observed that theory is not a strong driver in this regard. No organization used the term ''Resource-Based Theory'', nor did any organization mention any other guiding theory or practice from the organizational management literature when explaining their capabilities management approaches. As such, we concluded that there is no single best practice for capabilities management. Nevertheless, we believe that RBT and the diverse industry experiences described herein can provide useful insights to support development of capabilities management approaches.

  1. Best Management Practices (BMPs) for Ship and Boat Building and Repair

    E-Print Network [OSTI]

    document for major British Columbia shipbuilding and repair facilities, Environment Canada has conducted a survey of existing practices at all shipbuilding facilities in B.C. (Peter Hatfield, 1993). These survey to the shipbuilding and repair industry. Many of the recommended practices are equally applicable to many other

  2. CEMI Industrial Efficiency (text version)

    Broader source: Energy.gov [DOE]

    Below is the text version for the Clean Energy Manufacturing Initiative Industrial Efficiency and Energy Productivity Video.  

  3. China's Nuclear Industry After Fukushima

    E-Print Network [OSTI]

    YUAN, Jingdong

    2013-01-01

    continue to pursue nuclear expansion as part of an energythe rapid expansion of China’s nuclear industry requires a

  4. SHORT NARRATIVE ABOUT PROMISING PRACTICES

    National Nuclear Security Administration (NNSA)

    ATTACHMENT 2 SHORT NARRATIVE ABOUT PROMISING PRACTICES Briefly identify a policy, practice or procedure where your agency has been successful in the implementation of actions...

  5. Best Practices | Department of Energy

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

    and Security, Best Practices in Sustainable Environmental Stewardship, 2008 Federal Energy Management Program, Metering Best Practices, A Guide to Achieving Utility Resource...

  6. Setting the Standard for Industrial Energy Efficiency

    SciTech Connect (OSTI)

    McKane, Aimee; Williams, Robert; Perry, Wayne; Li, Tienan

    2007-06-01

    Industrial motor-driven systems use more than 2194 billionkWh annually on a global basis and offer one of the largest opportunitiesfor energy savings.1 The International Energy Agency estimates thatoptimization of motor driven systems could reduce global electricitydemand by 7 percent through the application of commercially availabletechnologies and using well-tested engineering practices. Yet manyindustrial firms remain either unaware of or unable to achieve theseenergy savings. The same factors that make it so challenging to achieveand sustain energy efficiency in motor-driven systems (complexity,frequent changes) apply to the production processes that they support.Yet production processes typically operate within a narrow band ofacceptable performance. These processes are frequently incorporated intoISO 9000/14000 quality and environmental management systems, whichrequire regular, independent audits to maintain ISO certification, anattractive value for international trade. It is our contention that acritical step in achieving and sustaining energy efficiency ofmotor-driven systems specifically, and industrial energy efficiencygenerally, is the adoption of a corporate energy management standard thatis consistent with current industrial quality and environmentalmanagement systems such as ISO. Several energy management standardscurrently exist (US, Denmark, Ireland, Sweden) and specifications(Germany, Netherlands) others are planned (China, Spain, Brazil, Korea).This paper presents the current status of energy management standardsdevelopment internationally, including an analysis of their sharedfeatures and differences, in terms of content, promulgation, andimplementation. The purpose of the analysis is to describe the currentstate of "best practices" for this emerging area of energy efficiencypolicymaking and tosuggest next steps toward the creation of a trulyinternational energy management standard that is consistent with the ISOprinciples of measurement, documentation, and continuousimprovement.

  7. Design Editorial Industrial Research Contributions

    E-Print Network [OSTI]

    Papalambros, Panos

    Journal of Mechanical Design Editorial Industrial Research Contributions Would authors working in industry be welcome contributors to JMD? The answer is an emphatic "yes, indeed!" but the reality is that authors from industry are a small minority relative to authors from academia. There are some real reasons

  8. Industry/University Cooperative Research

    E-Print Network [OSTI]

    Mease, Kenneth D.

    Industry/University Cooperative Research Center (I/UCRCs) Funded by the National Science Foundation capacity by developing long-term partnerships among industry, academe, and government. Leverage NSF funds with industry to support and train the next generation workforce within a global context. Mission: 1 #12;The I

  9. Handbook of Industrial Engineering Equations, Formulas, and Calculations

    SciTech Connect (OSTI)

    Badiru, Adedeji B; Omitaomu, Olufemi A

    2011-01-01

    The first handbook to focus exclusively on industrial engineering calculations with a correlation to applications, Handbook of Industrial Engineering Equations, Formulas, and Calculations contains a general collection of the mathematical equations often used in the practice of industrial engineering. Many books cover individual areas of engineering and some cover all areas, but none covers industrial engineering specifically, nor do they highlight topics such as project management, materials, and systems engineering from an integrated viewpoint. Written by acclaimed researchers and authors, this concise reference marries theory and practice, making it a versatile and flexible resource. Succinctly formatted for functionality, the book presents: Basic Math Calculations; Engineering Math Calculations; Production Engineering Calculations; Engineering Economics Calculations; Ergonomics Calculations; Facility Layout Calculations; Production Sequencing and Scheduling Calculations; Systems Engineering Calculations; Data Engineering Calculations; Project Engineering Calculations; and Simulation and Statistical Equations. It has been said that engineers make things while industrial engineers make things better. To make something better requires an understanding of its basic characteristics and the underlying equations and calculations that facilitate that understanding. To do this, however, you do not have to be computational experts; you just have to know where to get the computational resources that are needed. This book elucidates the underlying equations that facilitate the understanding required to improve design processes, continuously improving the answer to the age-old question: What is the best way to do a job?

  10. Energy Code Compliance and Enforcement Best Practices

    Broader source: Energy.gov [DOE]

    This webinar covers how to access current practices, compliance best practices, and enforce best practices with energy code compliances.

  11. Control Engineering Practice ] (

    E-Print Network [OSTI]

    Skogestad, Sigurd

    ; Control structure design; Petroleum industry; Anti slug control; Slug flow; Two-fluid model; Controllability 1. Introduction Stabilization of desired fluid flow regimes in pipelines has the potential the transition from laminar to turbulent flow in single-phase pipelines which is known to occur at a Reynolds

  12. Industrial Energy Audit Guidebook: Guidelines for Conducting an Energy Audit in Industrial Facilities

    SciTech Connect (OSTI)

    Hasanbeigi, Ali; Price, Lynn

    2010-10-07

    Various studies in different countries have shown that significant energy-efficiency improvement opportunities exist in the industrial sector, many of which are cost-effective. These energy-efficiency options include both cross-cutting as well as sector-specific measures. However, industrial plants are not always aware of energy-efficiency improvement potentials. Conducting an energy audit is one of the first steps in identifying these potentials. Even so, many plants do not have the capacity to conduct an effective energy audit. In some countries, government policies and programs aim to assist industry to improve competitiveness through increased energy efficiency. However, usually only limited technical and financial resources for improving energy efficiency are available, especially for small and medium-sized enterprises. Information on energy auditing and practices should, therefore, be prepared and disseminated to industrial plants. This guidebook provides guidelines for energy auditors regarding the key elements for preparing for an energy audit, conducting an inventory and measuring energy use, analyzing energy bills, benchmarking, analyzing energy use patterns, identifying energy-efficiency opportunities, conducting cost-benefit analysis, preparing energy audit reports, and undertaking post-audit activities. The purpose of this guidebook is to assist energy auditors and engineers in the plant to conduct a well-structured and effective energy audit.

  13. Mining Industry Profile | Department of Energy

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

    utilities, the primary metals industry, non-metallic minerals industry (glass, cement, lime), and the construction industry. Employment Mining operations are often the leading...

  14. Green Industrial Policy: Trade and Theory

    E-Print Network [OSTI]

    Karp, Larry; Stevenson, Megan

    2012-01-01

    Chang, H. -J. (2006): “Industrial policy in East Asia -foreign in- vestment and industrial policy for developing409. Lin, J. (2010): “Industrial policy comes out of the

  15. Industrial Energy Efficiency and Climate Change Mitigation

    E-Print Network [OSTI]

    Worrell, Ernst

    2009-01-01

    Stimulating R&D of industrial energy-efficient technology;Turnover, Retrofit and Industrial Energy Efficiency. Energyprograms perform at improving industrial energy efficiency.

  16. The Industrial Transformation of Subarctic Canada

    E-Print Network [OSTI]

    Mathoor, Vineeth

    2011-01-01

    the pace and impact of industrial transformation in theReview: The Industrial Transformation of Subarctic Canada ByIndia Piper, Liza. The Industrial Transformation of

  17. Electronic waste disassembly with industrial waste heat

    E-Print Network [OSTI]

    2013-01-01

    and for e?ective use of industrial exhaust heat is describedto scale up the process to industrial production levels.Waste Disassembly with Industrial Waste Heat Mengjun

  18. Setting the Standard for Industrial Energy Efficiency

    E-Print Network [OSTI]

    McKane, Aimee; Williams, Robert; Perry, Wayne; Li, Tienan

    2008-01-01

    IEA) 7 July 2006 Industrial motor systems energy efficiency:of energy-efficient equipment in industrial motor systems isin industrial energy efficiency, especially motor, steam,

  19. Energy Intensity Indicators: Industrial Source Energy Consumption

    Office of Energy Efficiency and Renewable Energy (EERE)

    The industrial sector comprises manufacturing and other nonmanufacturing industries not included in transportation or services. Manufacturing includes 18 industry sectors, generally defined at the...

  20. Industrial Energy Efficiency: Designing Effective State Programs...

    Office of Environmental Management (EM)

    Energy Efficiency: Designing Effective State Programs for the Industrial Sector Industrial Energy Efficiency: Designing Effective State Programs for the Industrial Sector This...

  1. Manual of analytical methods for the Industrial Hygiene Chemistry Laboratory

    SciTech Connect (OSTI)

    Greulich, K.A.; Gray, C.E. (comp.)

    1991-08-01

    This Manual is compiled from techniques used in the Industrial Hygiene Chemistry Laboratory of Sandia National Laboratories in Albuquerque, New Mexico. The procedures are similar to those used in other laboratories devoted to industrial hygiene practices. Some of the methods are standard; some, modified to suit our needs; and still others, developed at Sandia. The authors have attempted to present all methods in a simple and concise manner but in sufficient detail to make them readily usable. It is not to be inferred that these methods are universal for any type of sample, but they have been found very reliable for the types of samples mentioned.

  2. I remember wondering at the beginning what the Leadership course might be like. Was there something particular about leading the energy industry?

    E-Print Network [OSTI]

    Thomases, Becca

    particular about leading the energy industry? Something special that energy leaders had to know about leading? No. This class applies way beyond energy and what I have learned will live for me in any industry, and, most importantly, instructors who are actually practicing in this industry. That, to me

  3. Coal Industry Annual 1995

    SciTech Connect (OSTI)

    1996-10-01

    This report presents data on coal consumption, coal distribution, coal stocks, coal prices, coal quality, and emissions for Congress, Federal and State agencies, the coal industry, and the general public. Appendix A contains a compilation of coal statistics for the major coal-producing States. This report does not include coal consumption data for nonutility power producers that are not in the manufacturing, agriculture, mining, construction, or commercial sectors. Consumption for nonutility power producers not included in this report is estimated to be 21 million short tons for 1995.

  4. Recent developments: Industry briefs

    SciTech Connect (OSTI)

    1990-04-01

    Recent nuclear industry briefs are presented. These briefs include: Soviet Union to build Iran nuclear plant; Dension announces cuts in Elliot Lake production; Soviet environmental study delays Rostov startup; Cogema closes two mines; Namibian sanctions lifted by USA and Canada; US Energy and Kennecott restructors joint venture; Australians reelect Hawke; China to buy Soviet nuclear plant; Olympic Dam`s first sale of concentrates to USA; Uranevz buys one-third of Cogema`s Rabbit Lake operations; East and West Germany forming joint nuclear law; and Nova Scotia extends uranium exploration plan.

  5. Coal industry annual 1996

    SciTech Connect (OSTI)

    1997-11-01

    This report presents data on coal consumption, coal distribution, coal stocks, coal prices, and coal quality, and emissions for Congress, Federal and State agencies, the coal industry, and the general public. Appendix A contains a compilation of coal statistics for the major coal-producing States.This report does not include coal consumption data for nonutility power producers that are not in the manufacturing, agriculture, mining, construction, or commercial sectors. Consumption for nonutility power producers not included in this report is estimated to be 24 million short tons for 1996. 14 figs., 145 tabs.

  6. Recent developments: Industry briefs

    SciTech Connect (OSTI)

    NONE

    1990-08-01

    Recent nuclear industry briefs are presented. These briefs include: Japan completes test plant for laser enrichment, Saskatchewan reveals buyer percentages; West German utilities to take over East German Utilities; Mexico studying construction of 20 new nuclear plants; Cogema signs reprocessing contracts for 15 West German reactors; DOE`s FY91 incentive price predicted; West Germany decommissions sale uranium processing plant; Argentina`s Atucha-2 may be closed or sold; West Germany to buy Nukem plant for plutonium storage; and Saskatchewan revises uranium royalty system.

  7. Recent developments: Industry briefs

    SciTech Connect (OSTI)

    NONE

    1990-12-01

    Recent nuclear industry briefs are presented. These briefs include: uranium mine closures; all Ontario new reactor plans halted; B & W and GA form MHTGR fuel joint venture; Namibia seeks uranium sales in Japan; Minatco purchases remainder of Wolly Project; CGE agrees to relinquish control of Framatome; Oregon voter keep Trojan Nuclear Plant open; Soviets invited to Foratom meeting; court overrules NRC in licensing and training issues; Glencar exploration injoint venture with Hungarian mine; Soviet Union and Argentina to cooperate in breeder program; and German loads revive Atucha-2.

  8. Carbon Emissions: Chemicals Industry

    Gasoline and Diesel Fuel Update (EIA)

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet)Decade Year-0ProvedDecade2,948California (MillionThousandChemicals Industry

  9. Carbon Emissions: Food Industry

    Gasoline and Diesel Fuel Update (EIA)

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet)Decade Year-0ProvedDecade2,948California (MillionThousandChemicals IndustryFood

  10. Carbon Emissions: Paper Industry

    Gasoline and Diesel Fuel Update (EIA)

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustments (Billion Cubic Feet)Decade Year-0ProvedDecade2,948California (MillionThousandChemicalsPaper Industry

  11. Systems and Industry Analyses

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power AdministrationRobust,Field-effectWorking With LivermoreSustainable Landmimic keySystemssystems and industry

  12. Industrial Energy Efficiency

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

    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 Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantity of Natural GasAdjustmentsShirleyEnergyTher i nA Guide toIMPROVEMENT OFBarriers to Industrial Energy Efficiency Report to

  13. Emerging energy-efficient industrial technologies

    SciTech Connect (OSTI)

    Martin, N.; Worrell, E.; Ruth, M.; Price, L.; Elliott, R.N.; Shipley, A.M.; Thorne, J.

    2000-10-01

    U.S. industry consumes approximately 37 percent of the nation's energy to produce 24 percent of the nation's GDP. Increasingly, industry is confronted with the challenge of moving toward a cleaner, more sustainable path of production and consumption, while increasing global competitiveness. Technology will be essential for meeting these challenges. At some point, businesses are faced with investment in new capital stock. At this decision point, new and emerging technologies compete for capital investment alongside more established or mature technologies. Understanding the dynamics of the decision-making process is important to perceive what drives technology change and the overall effect on industrial energy use. The assessment of emerging energy-efficient industrial technologies can be useful for: (1) identifying R&D projects; (2) identifying potential technologies for market transformation activities; (3) providing common information on technologies to a broad audience of policy-makers; and (4) offering new insights into technology development and energy efficiency potentials. With the support of PG&E Co., NYSERDA, DOE, EPA, NEEA, and the Iowa Energy Center, staff from LBNL and ACEEE produced this assessment of emerging energy-efficient industrial technologies. The goal was to collect information on a broad array of potentially significant emerging energy-efficient industrial technologies and carefully characterize a sub-group of approximately 50 key technologies. Our use of the term ''emerging'' denotes technologies that are both pre-commercial but near commercialization, and technologies that have already entered the market but have less than 5 percent of current market share. We also have chosen technologies that are energy-efficient (i.e., use less energy than existing technologies and practices to produce the same product), and may have additional ''non-energy benefits.'' These benefits are as important (if not more important in many cases) in influencing the decision on whether to adopt an emerging technology. The technologies were characterized with respect to energy efficiency, economics, and environmental performance. The results demonstrate that the United States is not running out of technologies to improve energy efficiency and economic and environmental performance, and will not run out in the future. We show that many of the technologies have important non-energy benefits, ranging from reduced environmental impact to improved productivity and worker safety, and reduced capital costs.

  14. Mid 1 Practice

    E-Print Network [OSTI]

    2015-09-30

    Midterm I Practice Problems. 1. x dy dx. - y = xy + 2x, y(1) = 2. 2. dy dx. = -. 3x2 + 2y2. 4xy. , y(1) = 2. 3. Consider a logistic population model with harvesting. dP dt.

  15. RESEARCHHIGHLIGHTS Best Practices Handbook

    E-Print Network [OSTI]

    resource data for each stage of a solar energy project. About the Handbook The Best Practices Handbook. Solar Resource Data Reliable information about the solar resource is required for every solar energy of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated

  16. GROUNDWATER QUALITY PROTECTION PRACTICES

    E-Print Network [OSTI]

    #12;GROUNDWATER QUALITY PROTECTION PRACTICES Submitted to: Environment Canada 224 West Esplanade.............................................................................................1 2.0 GROUNDWATER RESOURCES WITHIN THE FRASER BASIN.................3 2.1 Lower Fraser Region..............................................................................5 3.0 COMMON SOURCES OF GROUNDWATER CONTAMINATION ...............6 3.1 Category 1 - Sources Designed

  17. DISTRIBUTED BEST PRACTICES

    E-Print Network [OSTI]

    Delaware, University of

    REPORT A Renewable Energy Applications for Delaware Yearly (READY) Project Center for Energy and development, environmental justice, conservation and renewable energy options, integrated resource planningPOLICY APPROACHES TO SUPPORT DISTRIBUTED RENEWABLE ENERGY: BEST PRACTICES AMONG U.S. STATES FINAL

  18. Whitacre College of Engineering Industrial Engineering Department

    E-Print Network [OSTI]

    Gelfond, Michael

    Whitacre College of Engineering Industrial Engineering Department Department Chair and Professor of Industrial Engineering. The Industrial Engineering Department at Texas Tech University has a distinguished industrial engineering education and provide appropriate service to the department, university

  19. Process Industries Division CALL FOR PAPERS

    E-Print Network [OSTI]

    Müller, Norbert

    Process Industries Division CALL FOR PAPERS The Process Industries Division of ASME is sponsoring a series of sessions on issues facing Process industries, such as Heat Exchangers Performance, Compression Technology, Water Purification / Treatment Technologies, Low Temperature Industrial Applications, etc

  20. Productivity benefits of industrial energy efficiency measures

    E-Print Network [OSTI]

    Worrell, Ernst

    2011-01-01

    installations in the paper industry. In: Proceedings 1995in the pulp and paper industry, food processing, industrialIndustry Number of case studies Food manufacturing Building materials Steel manufacturing Paper

  1. printed on recycled paper INDUSTRIAL ASSESSMENT CENTER

    E-Print Network [OSTI]

    printed on recycled paper INDUSTRIAL ASSESSMENT CENTER ENERGY EFFICIENCY, POLLUTION PREVENTION, AND PRODUCTIVITY IMPROVEMENT ASSISTANCE FOR INDUSTRY A U.S. DEPARTMENT OF ENERGY SPONSORED PROGRAM INDUSTRIAL STATE UNIVERSITY Industrial Assessment Center Department of Mechanical Engineering Fort Collins

  2. Commercial / Industrial Lighting

    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: Alternative Fuels Data Center Homesum_a_epg0_fpd_mmcf_m.xls" ,"Available from WebQuantityBonneville Power Administration would like submit the following comments response NAESB Business PracticeEnergy

  3. Soft X-ray extended emissions of short gamma-ray bursts as electromagnetic counterparts of compact binary mergers: possible origin and detectability

    SciTech Connect (OSTI)

    Nakamura, Takashi; Nakauchi, Daisuke [Department of Physics, Kyoto University, Oiwake-cho, Kitashirakawa, Sakyo-ku, Kyoto 606-8502 (Japan); Kashiyama, Kazumi [Department of Astronomy and Astrophysics, Department of Physics, Center for Particle and Gravitational Astrophysics, Pennsylvania State University, University Park, PA 16802 (United States); Suwa, Yudai [Yukawa Institute for Theoretical Physics, Kyoto University, Oiwake-cho, Kitashirakawa, Sakyo-ku, Kyoto 606-8502 (Japan); Sakamoto, Takanori [Department of Physics and Mathematics, College of Science and Engineering, Aoyama Gakuin University, 5-10-1 Fuchinobe, Chuo-ku, Sagamihara-shi, Kanagawa 252-5258 (Japan); Kawai, Nobuyuki [Department of Physics, Tokyo Insititute of Technology, 2-12-1 Ookayama, Meguro-ku, Tokyo 152-8551 (Japan)

    2014-11-20

    We investigate the possible origin of extended emissions (EEs) of short gamma-ray bursts with an isotropic energy of ?10{sup 50-51} erg and a duration of a few 10 s to ?100 s, based on a compact binary (neutron star (NS)-NS or NS-black hole (BH)) merger scenario. We analyze the evolution of magnetized neutrino-dominated accretion disks of mass ?0.1 M {sub ?} around BHs formed after the mergers and estimate the power of relativistic outflows via the Blandford-Znajek (BZ) process. We show that a rotation energy of the BH up to ? 10{sup 52} erg can be extracted with an observed timescale of ? 30(1 + z) s with a relatively small disk viscosity parameter of ? < 0.01. Such a BZ power dissipates by clashing with non-relativistic pre-ejected matter of mass M ? 10{sup –(2-4)} M {sub ?}, and forms a mildly relativistic fireball. We show that the dissipative photospheric emissions from such fireballs are likely in the soft X-ray band (1-10 keV) for M ? 10{sup –2} M {sub ?}, possibly in NS-NS mergers, and in the BAT band (15-150 keV) for M ? 10{sup –4} M {sub ?}, possibly in NS-BH mergers. In the former case, such soft EEs can provide a good chance of ?6 yr{sup ?1} (??{sub softEE}/4?) (R{sub GW}/40 yr{sup ?1}) for simultaneous detections of the gravitational waves with a ?0.°1 angular resolution by soft X-ray survey facilities like the Wide-Field MAXI. Here, ??{sub softEE} is the beaming factor of the soft EEs and R{sub GW} is the NS-NS merger rate detectable by the advanced LIGO, the advanced Virgo, and KAGRA.

  4. industrial & systems (ISE) Industrial and Systems engineers use engineering and business principles

    E-Print Network [OSTI]

    Rohs, Remo

    74 industrial & systems (ISE) Industrial and Systems engineers use engineering and business to help companies compete in today's global marketplace. The Industrial and Systems engineer's task. Programs Available · Industrial and Systems Engineering Bachelor of Science 128 units · Industrial

  5. industrial & systems (ISE) Industrial and Systems Engineers use engineering and business prin-

    E-Print Network [OSTI]

    Rohs, Remo

    70 industrial & systems (ISE) Industrial and Systems Engineers use engineering and business prin to help companies compete in today's global marketplace. The Industrial and Systems Engineer's task Available · Industrial and Systems Engineering Bachelor of Science 129 units · Industrial and Systems

  6. industrial & systems (ISE) Industrial and Systems Engineers use engineering and business principles

    E-Print Network [OSTI]

    Rohs, Remo

    70 industrial & systems (ISE) Industrial and Systems Engineers use engineering and business systems to help companies compete in today's global marketplace. The Industrial and Systems Engineer. Programs Available · Industrial and Systems Engineering Bachelor of Science 129 units · Industrial

  7. ITP Chemicals: Industrial Feedstock Flexibility Workshop Results...

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

    Industrial Feedstock Flexibility Workshop Results, December 2009 ITP Chemicals: Industrial Feedstock Flexibility Workshop Results, December 2009 feedstockworkshopreport.pdf More...

  8. Guiding Principles for Successfully Implementing Industrial Energy...

    Office of Environmental Management (EM)

    Guiding Principles for Successfully Implementing Industrial Energy Assessment Recommendations Guiding Principles for Successfully Implementing Industrial Energy Assessment...

  9. ITP Industrial Materials: Development and Commercialization of...

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

    Industrial Materials: Development and Commercialization of Alternative Carbon Fiber Precursors and Conversion Technologies ITP Industrial Materials: Development and...

  10. Midstate Electric Cooperative - Commercial and Industrial Energy...

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

    Commercial and Industrial Energy Efficiency Rebate Program Midstate Electric Cooperative - Commercial and Industrial Energy Efficiency Rebate Program < Back Eligibility Commercial...

  11. Academic-Industry Collaboration (AIC) - Synchrophasor Engineering...

    Energy Savers [EERE]

    Academic-Industry Collaboration (AIC) - Synchrophasor Engineering Education Program: Information Exchange Webinar (March 6, 2014) Academic-Industry Collaboration (AIC) -...

  12. Colorado State University Industrial Assessment Center Saves...

    Energy Savers [EERE]

    Industrial Assessment Center Saves Manufacturers Money and Trains the Next Generation of Engineers Colorado State University Industrial Assessment Center Saves...

  13. Southeast Electronic Book of Industrial Resources

    SciTech Connect (OSTI)

    2010-06-25

    This Industrial Technologies Program handbook connects industry with the various energy efficiency resources available in the midwest.

  14. Advanced Manufacturing Office (Formerly Industrial Technologies...

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

    Manufacturing Office (Formerly Industrial Technologies Program) Advanced Manufacturing Office (Formerly Industrial Technologies Program) Presented at the NREL Hydrogen and Fuel...

  15. The Industrialization of Thermoelectric Power Generation Technology...

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

    The Industrialization of Thermoelectric Power Generation Technology The Industrialization of Thermoelectric Power Generation Technology Presents module and system requirements for...

  16. Guides to pollution prevention: The pharmaceutical industry. Final report

    SciTech Connect (OSTI)

    Not Available

    1991-10-01

    Pharmaceutical manufacturers generate a variety of wastes during manufacturing, maintenance, and housekeeping operations which can be reduced or minimized through source reduction and recycling. The typical waste streams are spent fermentation broths, process liquors, solvents, equipment wash water, spilled materials, off-spec products, and used processing aids. Suggestions include improvements to operational practices, solvent recycling and implementing good materials management and housekeeping practices. To help companies in the industry identify opportunities for waste reduction at their own facilities, the guide includes a set of worksheets which take the user step-by-step through an analysis of the on-site waste generating operations and the possibilities for minimizing each waste. The guide and its worksheets would also be instructive to consultants serving the pharmaceutical manufacturing industry and government agencies who regulate waste streams generated from these firms.

  17. The Swift short gamma-ray burst rate density: prospects for detecting binary neutron star mergers by aLIGO

    E-Print Network [OSTI]

    David Coward; Eric Howell; Tsvi Piran; Giulia Stratta; Marica Branchesi; Omer Bromberg; Bruce Gendre; Ronald Burman; Dafne Guetta

    2012-06-22

    Presently only 30% of short gamma ray bursts (SGRBs) have accurate redshifts, and this sample is highly biased by the limited sensitivity of {\\it Swift} to detect SGRBs. We account for the dominant biases to calculate a realistic SGRB rate density out to $z = 0.5$ using the {\\it Swift} sample of peak fluxes, redshifts, and those SGRBs with a beaming angle constraint from X-ray/optical observations. Assuming a significant fraction of binary neutron star mergers produce SGRBs, we calculate lower and upper detection rate limits of (1-180) per Yr by an advanced LIGO and Virgo coincidence search. Our detection rate is compatible with extrapolations using Galactic pulsar observations and population synthesis.

  18. Industrial Energy Efficiency Achieving Success in a Difficult Environment 

    E-Print Network [OSTI]

    Castellow, C.

    2011-01-01

    EFFICIENCY ACHIEVING SUCCESS IN A DIFFICULT ENVIRONMENT CARL CASTELLOW DIRECTOR, INDUSTRIAL ENERGY EFFICIENCY SCHNEIDER ELECTRIC RALEIGH, NC ABSRACT Energy use and the resulting environmental impacts are major points of concern... threat would lead to consequences that would dwarf the economic woes already in place, he outlined fundamental principles of his new energy plan. Among his points: ? ?Conservation is the quickest, cheapest, most practical source of energy.? ? ?We...

  19. Vortical and industrial interactions

    SciTech Connect (OSTI)

    Barr, P.K. [Sandia National Labs., Livermore, CA (United States). Combustion Research Facility

    1995-05-01

    A vortex-dynamics-based model has been developed and used to study the importance of flame extinction by fluid dynamic strain that occurs in a pulse combustor. Results show that flame extinction by fluid dynamic stretch, which occurs during injection of the fresh charge, ensures the correct phase relation between the energy release and the resonant pressure wave. This phasing is required by Rayleigh`s criterion for stable combustion-driven oscillations. However, this model also showed that the vortex dynamics technique is not at a stage where design engineers can use it as a predictive tool, just as they would use experimental testing. This is in part because pulse combustor designs being developed today use three-dimensional geometries and complex operating conditions, whereas the vortex model simulates processes occurring only in the combustion chamber, and ignores the rest of the pulse combustor unit. Also, the model assumes two-dimensional flow, a simple combustor geometry, and premixed combustion. A successful in-house manufacturing design code must be able to perform a complete design study reliably, quickly and easily, and on computers that are readily available to industry. Instead, the insight gained from the vortex dynamics model is being incorporated into a computational tool to assist in pulse combustor design. This tool will be used by industrial engineers to design pulse combustors for specific applications. The design tool combines submodels for acoustics, injection and combustion, producing a pulse combustor model that dynamically couples the processes in the combustion chamber to the acoustic waves.

  20. INDUST: An Industrial Data Base 

    E-Print Network [OSTI]

    Wilfert, G. L.; Moore, N. L.

    1987-01-01

    the latest EIA pro visional estimate of energy consumption (in trillion Btu) for 1985. The EIA reports fuel consumption according to five categories: electricity, fuel oil, natural gas, coal and coke, and other fuels. As Figure 2 shows, natural gas... for the U.S. Department of Energy (DOE), has used INDUST in assessing industrial equipment and technology research for DOE's Office of Industrial Programs. Battelle has also used INDUST in some of its con tract research relating to industrial technology...