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Sample records for gravity definitions key

  1. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Key Terms Definition API Gravity An arbitrary scale expressing the gravity or density of ... propane, and butane; and many other products used for their energy or chemical content. ...

  2. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Key Terms Definition API Gravity An arbitrary scale expressing the gravity or density of liquid petroleum products. The measuring scale is calibrated in terms of degrees...

  3. NGNP: High Temperature Gas-Cooled Reactor Key Definitions, Plant Capabilities, and Assumptions

    SciTech Connect (OSTI)

    Wayne Moe

    2013-05-01

    This document provides key definitions, plant capabilities, and inputs and assumptions related to the Next Generation Nuclear Plant to be used in ongoing efforts related to the licensing and deployment of a high temperature gas-cooled reactor. These definitions, capabilities, and assumptions were extracted from a number of NGNP Project sources such as licensing related white papers, previously issued requirement documents, and preapplication interactions with the Nuclear Regulatory Commission (NRC).

  4. NGNP: High Temperature Gas-Cooled Reactor Key Definitions, Plant Capabilities, and Assumptions

    SciTech Connect (OSTI)

    Phillip Mills

    2012-02-01

    This document is intended to provide a Next Generation Nuclear Plant (NGNP) Project tool in which to collect and identify key definitions, plant capabilities, and inputs and assumptions to be used in ongoing efforts related to the licensing and deployment of a high temperature gas-cooled reactor (HTGR). These definitions, capabilities, and assumptions are extracted from a number of sources, including NGNP Project documents such as licensing related white papers [References 1-11] and previously issued requirement documents [References 13-15]. Also included is information agreed upon by the NGNP Regulatory Affairs group's Licensing Working Group and Configuration Council. The NGNP Project approach to licensing an HTGR plant via a combined license (COL) is defined within the referenced white papers and reference [12], and is not duplicated here.

  5. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    API Gravity Definitions Key Terms Definition API Gravity An arbitrary scale expressing the gravity or density of liquid petroleum products. The measuring scale is calibrated in terms of degrees API; it is calculated as follows: Degrees API = (141.5 / (sp. gr. 60ºF / 60ºF)) - 131.5 The higher the API gravity, the lighter the compound. Light crudes generally exceed 38 degrees API and heavy crudes are commonly labeled as all crudes with an API gravity of 22 degrees or below. Intermediate crudes

  6. Category:Definitions | Open Energy Information

    Open Energy Information (Open El) [EERE & EIA]

    Cooling Definition:Airborne Gravity Survey Definition:Algae Definition:Algae fuel Definition:Alternating current Definition:Alternative-fuel vehicle...

  7. Landed Costs of Imported Crude by API Gravity

    U.S. Energy Information Administration (EIA) (indexed site)

    API Gravity (Dollars per Barrel) Period: Monthly Annual Download Series History Download Series History Definitions, Sources & Notes Definitions, Sources & Notes API Gravity Sep-15 ...

  8. Definitions

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Below are a few small business procurement definitions as stated by the Small Business Administration and the Federal Acquisition Regulation. Contact Small Business Office (505) ...

  9. Gravity brake

    DOE Patents [OSTI]

    Lujan, Richard E.

    2001-01-01

    A mechanical gravity brake that prevents hoisted loads within a shaft from free-falling when a loss of hoisting force occurs. A loss of hoist lifting force may occur in a number of situations, for example if a hoist cable were to break, the brakes were to fail on a winch, or the hoist mechanism itself were to fail. Under normal hoisting conditions, the gravity brake of the invention is subject to an upward lifting force from the hoist and a downward pulling force from a suspended load. If the lifting force should suddenly cease, the loss of differential forces on the gravity brake in free-fall is translated to extend a set of brakes against the walls of the shaft to stop the free fall descent of the gravity brake and attached load.

  10. Table Definitions, Sources, and Explanatory Notes

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    arbitrary scale expressing the gravity or density of liquid petroleum products. ... For definitions of related energy terms, refer to the EIA Energy Glossary. Sources Energy ...

  11. Gravity settling

    DOE Patents [OSTI]

    Davis, Hyman R.; Long, R. H.; Simone, A. A.

    1979-01-01

    Solids are separated from a liquid in a gravity settler provided with inclined solid intercepting surfaces to intercept the solid settling path to coalesce the solids and increase the settling rate. The intercepting surfaces are inverted V-shaped plates, each formed from first and second downwardly inclined upwardly curved intersecting conical sections having their apices at the vessel wall.

  12. Is nonrelativistic gravity possible?

    SciTech Connect (OSTI)

    Kocharyan, A. A.

    2009-07-15

    We study nonrelativistic gravity using the Hamiltonian formalism. For the dynamics of general relativity (relativistic gravity) the formalism is well known and called the Arnowitt-Deser-Misner (ADM) formalism. We show that if the lapse function is constrained correctly, then nonrelativistic gravity is described by a consistent Hamiltonian system. Surprisingly, nonrelativistic gravity can have solutions identical to relativistic gravity ones. In particular, (anti-)de Sitter black holes of Einstein gravity and IR limit of Horava gravity are locally identical.

  13. Glossary API Gravity: An

    U.S. Energy Information Administration (EIA) (indexed site)

    gravity of 22 degrees or below. Intermediate crudes fall in the range of 22 degrees to 38 degrees API gravity. ASTM: American Society for Testing and Materials. Aviation...

  14. Table Definitions, Sources, and Explanatory Notes

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    LNG Storage Additions & Withdrawals Definitions Key Terms Definition Liquefied Natural Gas Natural gas (primarily methane) that has been liquefied by reducing its temperature to ...

  15. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Preliminary Crude Imports by Country of Origin Definitions Key Terms Definition Barrel A ... Imports Receipts of crude oil and petroleum products into the 50 States and the District ...

  16. Table Definitions, Sources, and Explanatory Notes

    Annual Energy Outlook

    Underground Storage - All Operators Definitions Key Terms Definition AGA Eastern Consuming Region All States east of the Mississippi River less Mississippi and Alabama, plus Iowa,...

  17. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Futures Prices Definitions Key Terms Definition Contract 1 A futures contract specifying the earliest delivery date. Natural gas contracts expire three business days prior to the ...

  18. Key Outcomes:

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Key Points & Action Items Inaugural Meeting Thursday, August 25, 2011 Renaissance Denver Hotel Denver, Colorado Participants Tracey LeBeau, Director, Pilar Thomas, Deputy Director, and Brandt Petrasek, Special Assistant, Department of Energy, Office of Indian Energy Policy and Programs; Vice Chairman Ronald Suppah and Jim Manion, Confederated Tribes of the Warm Springs Reservation of Oregon; William Micklin, Ewiiaapaayp Band of Kumeyaay Indians; Councilman Barney Enos, Jr., Jason Hauter,

  19. KEY PERSONNEL

    National Nuclear Security Administration (NNSA)

    by Mods 002, 006, 020, 029, 0049, 0065, 0084, 0091, 0106) DE-NA0000622 Section J, Appendix J, Page 1 SECTION J APPENDIX J KEY PERSONNEL 7/06/2015 TITLE NAME President Christopher C. Gentile Vice President, Engineering Robin Stubenhofer Vice President, Integrated Supply Chain Rick Lavelock Director, Sr. Program Management Org. Vacant Director, Integrated Supply Chain Kurt Lorenzen Director, Engineering Bob Chaney Director, Quality David Schoenherr Director, Information Technology Matt Decker

  20. 2010 Manufacturing Energy and Carbon Footprints: Definitions...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Manufacturing Energy and Carbon Footprints: Definitions and Assumptions This 13-page document defines key terms and details assumptions and references used in the Manufacturing ...

  1. 2014 Manufacturing Energy and Carbon Footprints: Definitions...

    Energy.gov (indexed) [DOE]

    Definitions and Assumptions A number of key terms are used to interpret the manufacturing energy and carbon footprints. The terms associated with the energy footprint analysis are ...

  2. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Key Terms Definition Alaskan in Transit Alaskan crude oil stocks in transit by water ... content of emulsions (exclusive of water), and petroleum distillates blended with ...

  3. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Key Terms Definition Hydrogen The lightest of all gases, occurring chiefly in combination with oxygen in water; exists also in acids, bases, alcohols, petroleum, and other ...

  4. NSR Key Number Retrieval

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    NSR Key Number Retrieval Pease enter key in the box Submit

  5. Gauge/Gravity Duality

    ScienceCinema (OSTI)

    Polchinski, Joseph [Kavli Institute for Theoretical Physics

    2010-09-01

    Gauge theories, which describe the particle interactions, are well understood, while quantum gravity leads to many puzzles. Remarkably, in recent years we have learned that these are actually dual, the same system written in different variables. On the one hand, this provides our most precise description of quantum gravity, resolves some long-standing paradoxes, and points to new principles. On the other, it gives a new perspective on strong interactions, with surprising connections to other areas of physics. I describe these ideas, and discuss current and future directions.

  6. Hawaii Gravity Model

    SciTech Connect (OSTI)

    Nicole Lautze

    2015-12-15

    Gravity model for the state of Hawaii. Data is from the following source: Flinders, A.F., Ito, G., Garcia, M.O., Sinton, J.M., Kauahikaua, J.P., and Taylor, B., 2013, Intrusive dike complexes, cumulate cores, and the extrusive growth of Hawaiian volcanoes: Geophysical Research Letters, v. 40, p. 3367–3373, doi:10.1002/grl.50633.

  7. Cosmological stability bound in massive gravity and bigravity

    SciTech Connect (OSTI)

    Fasiello, Matteo; Tolley, Andrew J. E-mail: andrew.j.tolley@case.edu

    2013-12-01

    We give a simple derivation of a cosmological bound on the graviton mass for spatially flat FRW solutions in massive gravity with an FRW reference metric and for bigravity theories. This bound comes from the requirement that the kinetic term of the helicity zero mode of the graviton is positive definite. The bound is dependent only on the parameters in the massive gravity potential and the Hubble expansion rate for the two metrics. We derive the decoupling limit of bigravity and FRW massive gravity, and use this to give an independent derivation of the cosmological bound. We recover our previous results that the tension between satisfying the Friedmann equation and the cosmological bound is sufficient to rule out all observationally relevant FRW solutions for massive gravity with an FRW reference metric. In contrast, in bigravity this tension is resolved due to different nature of the Vainshtein mechanism. We find that in bigravity theories there exists an FRW solution with late-time self-acceleration for which the kinetic terms for the helicity-2, helicity-1 and helicity-0 are generically nonzero and positive making this a compelling candidate for a model of cosmic acceleration. We confirm that the generalized bound is saturated for the candidate partially massless (bi)gravity theories but the existence of helicity-1/helicity-0 interactions implies the absence of the conjectured partially massless symmetry for both massive gravity and bigravity.

  8. Domestic Crude Oil First Purchase Prices by API Gravity

    U.S. Energy Information Administration (EIA) (indexed site)

    API Gravity (Dollars per Barrel) Period: Monthly Annual Download Series History Download Series History Definitions, Sources & Notes Definitions, Sources & Notes API Gravity Mar-16 Apr-16 May-16 Jun-16 Jul-16 Aug-16 View History 20.0º or Less 31.93 34.72 40.00 40.44 37.34 39.18 1993-2016 20.1º to 25.0º 33.32 35.99 41.97 43.04 39.42 40.45 1993-2016 25.1º to 30.0º 27.70 31.68 37.41 37.93 33.47 34.17 1993-2016 30.1º to 35.0º 31.90 35.92 40.94 44.51 41.82 41.22 1993-2016 35.1º to

  9. Percentages of Total Imported Crude Oil by API Gravity

    U.S. Energy Information Administration (EIA) (indexed site)

    Percentages of Total Imported Crude Oil by API Gravity (Percent by Interval) Period: Monthly Annual Download Series History Download Series History Definitions, Sources & Notes Definitions, Sources & Notes API Gravity Mar-16 Apr-16 May-16 Jun-16 Jul-16 Aug-16 View History 20.0º or Less 15.82 15.37 15.79 16.03 16.65 19.61 1983-2016 20.1º to 25.0º 40.58 40.60 44.06 37.92 40.00 38.13 1983-2016 25.1º to 30.0º 6.44 5.96 8.63 10.60 10.98 8.27 1983-2016 30.1º to 35.0º 28.91 26.65 21.40

  10. Crude Oil and Lease Condensate Production by API Gravity

    Gasoline and Diesel Fuel Update

    Lease Condensate Production by API Gravity Period-Unit: Monthly-Thousand Barrels per Day Download Series History Download Series History Definitions, Sources & Notes Definitions, Sources & Notes API Gravity Mar-16 Apr-16 May-16 Jun-16 Jul-16 Aug-16 View History Lower 48 States 8,663 8,458 8,377 8,241 8,255 8,285 2015-2016 20.0º or Lower 408 405 407 398 406 397 2015-2016 20.1º to 25.0º 178 168 167 172 175 170 2015-2016 25.1º to 30.0º 733 714 692 667 759 714 2015-2016 30.1º to 35.0º

  11. Information systems definition architecture

    SciTech Connect (OSTI)

    Calapristi, A.J.

    1996-06-20

    The Tank Waste Remediation System (TWRS) Information Systems Definition architecture evaluated information Management (IM) processes in several key organizations. The intent of the study is to identify improvements in TWRS IM processes that will enable better support to the TWRS mission, and accommodate changes in TWRS business environment. The ultimate goals of the study are to reduce IM costs, Manage the configuration of TWRS IM elements, and improve IM-related process performance.

  12. Geometric scalar theory of gravity

    SciTech Connect (OSTI)

    Novello, M.; Bittencourt, E.; Goulart, E.; Salim, J.M.; Toniato, J.D.; Moschella, U. E-mail: eduhsb@cbpf.br E-mail: egoulart@cbpf.br E-mail: toniato@cbpf.br

    2013-06-01

    We present a geometric scalar theory of gravity. Our proposal will be described using the ''background field method'' introduced by Gupta, Feynman, Deser and others as a field theory formulation of general relativity. We analyze previous criticisms against scalar gravity and show how the present proposal avoids these difficulties. This concerns not only the theoretical complaints but also those related to observations. In particular, we show that the widespread belief of the conjecture that the source of scalar gravity must be the trace of the energy-momentum tensor which is one of the main difficulties to couple gravity with electromagnetic phenomenon in previous models does not apply to our geometric scalar theory. From the very beginning this is not a special relativistic scalar gravity. The adjective ''geometric'' pinpoints its similarity with general relativity: this is a metric theory of gravity. Some consequences of this new scalar theory are explored.

  13. Gravity Techniques | Open Energy Information

    Open Energy Information (Open El) [EERE & EIA]

    in density, such as at fault contacts. 2 Gravity techniques are also applied towards reservoir monitoring for subsidence and mass gain or loss within a geothermal reservoir...

  14. Gravity Methods | Open Energy Information

    Open Energy Information (Open El) [EERE & EIA]

    Methods Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Technique: Gravity Methods Details Activities (0) Areas (0) Regions (0) NEPA(3) Exploration...

  15. Geologic interpretation of gravity anomalies

    SciTech Connect (OSTI)

    Andreyev, B.A.; Klushin, I.G.

    1990-04-19

    This Russian textbook provides a sufficiently complete and systematic illumination of physico-geologic and mathematical aspect of complex problem of interpretation of gravity anomalies. The rational methods of localization of anomalies are examined in detail. All methods of interpreting gravity anomalies are described which have found successful application in practice. Also given are ideas of some new methods of the interpretation of gravity anomalies, the prospects for further development and industrial testing. Numerous practical examples to interpretation are given. Partial Contents: Bases of gravitational field theory; Physico-geologic bases of gravitational prospecting; Principles of geologic interpretation of gravity anomalies; Conversions and calculations of anomalies; Interpretation of gravity anomalies for bodies of correct geometric form and for bodies of arbitrary form; Geologic interpretation of the results of regional gravitational photographing; Searches and prospecting of oil- and gas-bearing structures and of deposits of ore and nonmetalliferous useful minerals.

  16. Category:Gravity Techniques | Open Energy Information

    Open Energy Information (Open El) [EERE & EIA]

    the following 3 subcategories, out of 3 total. A Airborne Gravity Survey 1 pages G Ground Gravity Survey 1 pages M Microgravity-Hybrid Microgravity 1 pages...

  17. Public Key Cryptography and Key Management

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

    2000-02-15

    The use and management of certificate-based public key cryptography for the Department of Energy (DOE) requires the establishment of a public key infrastructure (PKI). This chapter defines the policy related to roles, requirements, and responsibilities for establishing and maintaining a DOE PKI and the documentation necessary to ensure that all certificates are managed in a manner that maintains the overall trust required to support a viable PKI. Canceled by DOE N 251.112.

  18. Manufacturing Energy and Carbon Footprint Definitions and Assumptions...

    Energy.gov (indexed) [DOE]

    Definitions and Assumptions A number of key terms are used to interpret the manufacturing energy and carbon footprints. The terms associated with the energy footprint analysis are ...

  19. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Coalbed Methane Production Definitions Key Terms Definition Coalbed Methane Methane is generated during coal formation and is contained in the coal microstructure. Typical recovery entails pumping water out of the coal to allow the gas to escape. Methane is the principal component of natural gas. Coalbed methane can be added to natural gas pipelines without any special treatment. For definitions of related energy terms, refer to the EIA Energy Glossary. Sources Energy Information Administration,

  20. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Shale Gas Production Definitions Key Terms Definition Shale Gas Natural gas produced from organic (black) shale formations. For definitions of related energy terms, refer to the EIA Energy Glossary. Sources Energy Information Administration, Office of Oil and Gas Explanatory Notes Shale Gas production data collected in conjunction with proved reserves data on Form EIA-23 are unofficial. Official Shale Gas production data from Form EIA-895 can be found in Natural Gas Gross Withdrawals and

  1. Group key management

    SciTech Connect (OSTI)

    Dunigan, T.; Cao, C.

    1997-08-01

    This report describes an architecture and implementation for doing group key management over a data communications network. The architecture describes a protocol for establishing a shared encryption key among an authenticated and authorized collection of network entities. Group access requires one or more authorization certificates. The implementation includes a simple public key and certificate infrastructure. Multicast is used for some of the key management messages. An application programming interface multiplexes key management and user application messages. An implementation using the new IP security protocols is postulated. The architecture is compared with other group key management proposals, and the performance and the limitations of the implementation are described.

  2. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Key Terms Definition Barrel A unit of volume equal to 42 U.S. gallons. Fuel Ethanol An anhydrous alcohol (ethanol with less than 1% water) intended for gasoline blending as ...

  3. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Key Terms Definition Alaskan in Transit Alaskan crude oil stocks in transit by water ... Crude oil that is in-transit by water from Alaska, or that is stored on Federal leases or ...

  4. Quantum Field Theory & Gravity

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Quantum Field Theory & Gravity Quantum Field Theory & Gravity Understanding discoveries at the Energy, Intensity, and Cosmic Frontiers Get Expertise Rajan Gupta (505) 667-7664 Email Bruce Carlsten (505) 667-5657 Email Quantum Field Theory and Gravity at Los Alamos The HEP effort at Los Alamos in this area is actively pursing a number of questions in this area. What is the final state of complete gravitational collapse? What happens at the event horizon? What is dark energy? How did the

  5. Key Milestones/Outlook

    Office of Energy Efficiency and Renewable Energy (EERE)

    Key Milestones/Outlook per the Department of Energy 2015 Congressional Budget Request, Environmental Management, March 2014

  6. Positive signs in massive gravity

    DOE PAGES-Beta [OSTI]

    Cheung, Clifford; Remmen, Grant N.

    2016-04-01

    Here, we derive new constraints on massive gravity from unitarity and analyticity of scattering amplitudes. Our results apply to a general effective theory defined by Einstein gravity plus the leading soft diffeomorphism-breaking corrections. We calculate scattering amplitudes for all combinations of tensor, vector, and scalar polarizations. Furthermore, the high-energy behavior of these amplitudes prescribes a specific choice of couplings that ameliorates the ultraviolet cutoff, in agreement with existing literature. We then derive consistency conditions from analytic dispersion relations, which dictate positivity of certain combinations of parameters appearing in the forward scattering amplitudes. These constraints exclude all but a small islandmore » in the parameter space of ghost-free massive gravity. And while the theory of the "Galileon" scalar mode alone is known to be inconsistent with positivity constraints, this is remedied in the full massive gravity theory.« less

  7. Cosmological perturbations in unimodular gravity

    SciTech Connect (OSTI)

    Gao, Caixia; Brandenberger, Robert H.; Cai, Yifu; Chen, Pisin E-mail: rhb@hep.physics.mcgill.ca E-mail: chen@slac.stanford.edu

    2014-09-01

    We study cosmological perturbation theory within the framework of unimodular gravity. We show that the Lagrangian constraint on the determinant of the metric required by unimodular gravity leads to an extra constraint on the gauge freedom of the metric perturbations. Although the main equation of motion for the gravitational potential remains the same, the shift variable, which is gauge artifact in General Relativity, cannot be set to zero in unimodular gravity. This non-vanishing shift variable affects the propagation of photons throughout the cosmological evolution and therefore modifies the Sachs-Wolfe relation between the relativistic gravitational potential and the microwave temperature anisotropies. However, for adiabatic fluctuations the difference between the result in General Relativity and unimodular gravity is suppressed on large angular scales. Thus, no strong constraints on the theory can be derived.

  8. Quantum dense key distribution

    SciTech Connect (OSTI)

    Degiovanni, I.P.; Ruo Berchera, I.; Castelletto, S.; Rastello, M.L.; Bovino, F.A.; Colla, A.M.; Castagnoli, G.

    2004-03-01

    This paper proposes a protocol for quantum dense key distribution. This protocol embeds the benefits of a quantum dense coding and a quantum key distribution and is able to generate shared secret keys four times more efficiently than the Bennet-Brassard 1984 protocol. We hereinafter prove the security of this scheme against individual eavesdropping attacks, and we present preliminary experimental results, showing its feasibility.

  9. SSH Key Fingerprints

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    SSH Key Fingerprints SSH Key Fingerprints Occasionally maintenance on NERSC systems results in the SSH host key changing. On the first time you attempt to log in after this, ssh will stop with a warning like: "WARNING: REMOTE HOST IDENTIFICATION HAS CHANGED!" (Linux/Mac) or "WARNING - POTENTIAL SECURITY BREACH!" (Windows) Do not ignore these warnings! The correct host key fingerprint for Cori is: 2048 SHA256:mR3sHwHorgjqRlUbggtfOCa768/uKdbNb2TOH8xDMn8 You can replace entries

  10. Key Events Timeline

    Energy.gov [DOE]

    This document lists key events beginning with the April 20 fire on the Deepwater Horizon through July 28th. Updated July 28, 2010.

  11. 2014 Manufacturing Energy and Carbon Footprints: Definitions and Assumptions

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Definitions and Assumptions A number of key terms are used to interpret the manufacturing energy and carbon footprints. The terms associated with the energy footprint analysis are defined below in alphabetical order. Key definitions and assumptions associated with the greenhouse gas (GHG) footprint analysis are shown on pages 12 and 13. Energy Footprint Analysis Definitions CHP/Cogeneration - The production of electrical energy and another form of useful energy (such as heat or steam) through

  12. Optical key system

    SciTech Connect (OSTI)

    Hagans, Karla G.; Clough, Robert E.

    2000-01-01

    An optical key system comprises a battery-operated optical key and an isolated lock that derives both its operating power and unlock signals from the correct optical key. A light emitting diode or laser diode is included within the optical key and is connected to transmit a bit-serial password. The key user physically enters either the code-to-transmit directly, or an index to a pseudorandom number code, in the key. Such person identification numbers can be retained permanently, or ephemeral. When a send button is pressed, the key transmits a beam of light modulated with the password information. The modulated beam of light is received by a corresponding optical lock with a photovoltaic cell that produces enough power from the beam of light to operate a password-screen digital logic. In one application, an acceptable password allows a two watt power laser diode to pump ignition and timing information over a fiberoptic cable into a sealed engine compartment. The receipt of a good password allows the fuel pump, spark, and starter systems to each operate. Therefore, bypassing the lock mechanism as is now routine with automobile thieves is pointless because the engine is so thoroughly disabled.

  13. Optical key system

    SciTech Connect (OSTI)

    Hagans, K.G.; Clough, R.E.

    2000-04-25

    An optical key system comprises a battery-operated optical key and an isolated lock that derives both its operating power and unlock signals from the correct optical key. A light emitting diode or laser diode is included within the optical key and is connected to transmit a bit-serial password. The key user physically enters either the code-to-transmit directly, or an index to a pseudorandom number code, in the key. Such person identification numbers can be retained permanently, or ephemeral. When a send button is pressed, the key transmits a beam of light modulated with the password information. The modulated beam of light is received by a corresponding optical lock with a photovoltaic cell that produces enough power from the beam of light to operate a password-screen digital logic. In one application, an acceptable password allows a two watt power laser diode to pump ignition and timing information over a fiberoptic cable into a sealed engine compartment. The receipt of a good password allows the fuel pump, spark, and starter systems to each operate. Therefore, bypassing the lock mechanism as is now routine with automobile thieves is pointless because the engine is so thoroughly disabled.

  14. ARM - Key Science Questions

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    govScienceKey Science Questions Science Research Themes Research Highlights Journal Articles Collaborations Atmospheric System Research (ASR) Earth System Modeling Regional & Global Climate Modeling Terrestrial Ecosystem Science Performance Metrics User Meetings Past ARM Science Team Meetings ASR Meetings Accomplishments Accomplishments in Atmospheric Science, 2008-2013 (PDF, 7.4MB) ARM Accomplishments from the Science Program and User Facility, 1989-2008 (PDF, 696KB) Key Science Questions

  15. Public Key FPGA Software

    Energy Science and Technology Software Center (OSTI)

    2013-07-25

    The Public Key (PK) FPGA software performs asymmetric authentication using the 163-bit Elliptic Curve Digital Signature Algorithm (ECDSA) on an embedded FPGA platform. A digital signature is created on user-supplied data, and communication with a host system is performed via a Serial Peripheral Interface (SPI) bus. Software includes all components necessary for signing, including custom random number generator for key creation and SHA-256 for data hashing.

  16. Key Activities | Department of Energy

    Energy Savers

    About the Fuel Cell Technologies Office Key Activities Key Activities The Fuel Cell Technologies Office conducts work in several key areas to advance the development and ...

  17. Definitions | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Definitions Definitions Personal Property Definitions and Acronyms Definitions Acronyms Definitions The definition of personal property includes but it not limited to the following. Accountability - A property management function that involves maintaining an account or record of personal property and personal property transactions from receipt to final disposition. Accountable Personal Property -any property item having an original unit acquisition cost of $10,000 or more, or meeting the

  18. Definition of Energy Efficiency

    U.S. Energy Information Administration (EIA) (indexed site)

    Energy Users Energy Efficiency Page Energy Efficiency Definition Energy Efficiency: Definition Stairs) "Take the Stairs--Be More Energy Efficient" Person A interprets the sign as...

  19. Category:ISGAN Definitions | Open Energy Information

    Open Energy Information (Open El) [EERE & EIA]

    Shift Factor Definition:Load-Serving Entity Definition:Loading Monitor M Definition:Microgrid Controller Definition:Misoperation N Definition:Native Load Definition:Net Actual...

  20. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Prices Definitions Key Terms Definition Citygate A point or measuring station at which a distributing gas utility receives gas from a natural gas pipeline company or transmission system. Commercial Price The price of gas used by nonmanufacturing establishments or agencies primarily engaged in the sale of goods or services such as hotels, restaurants, wholesale and retail stores and other service enterprises; and gas used by local, State and Federal agencies engaged in nonmanufacturing

  1. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Distillate by End Use Definitions Key Terms Definition All Other Sales for all other energy-consuming sectors not included elsewhere. Commercial An energy-consuming sector that consists of service-providing facilities and equipment of nonmanufacturing businesses; Federal, State, and local governments; and other private and public organizations, such as religious, social, or fraternal groups. The commercial sector includes institutional living quarters. Common uses of energy associated with this

  2. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Distillate by End Use Definitions Key Terms Definition Adjusted Sales Distillate fuel oil sales estimates have been adjusted at the PADD district level to equal published EIA volume estimates of petroleum products supplied in the U.S. marketplace. The kerosene and residual fuel oil sales estimates have been adjusted at the national level. The products supplied estimates can be found in the Petroleum Supply Annual for the appropriate year. In addition, electric power generation data and

  3. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Residual Fuel Oil by End Use Definitions Key Terms Definition Adjusted Sales Distillate fuel oil sales estimates have been adjusted at the PADD district level to equal published EIA volume estimates of petroleum products supplied in the U.S. marketplace. The kerosene and residual fuel oil sales estimates have been adjusted at the national level. The products supplied estimates can be found in the Petroleum Supply Annual for the appropriate year. In addition, electric power generation data and

  4. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Footage Drilled for Crude Oil and Natural Gas Wells Definitions Key Terms Definition Crude Oil A mixture of hydrocarbons that exists in liquid phase in natural underground reservoirs and remains liquid at atmospheric pressure after passing through surface separating facilities. Depending upon the characteristics of the crude stream, it may also include: Small amounts of hydrocarbons that exist in gaseous phase in natural underground reservoirs but are liquid at atmospheric pressure after being

  5. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Receipts by Pipeline, Tanker, and Barge Between PAD Districts Definitions Key Terms Definition Asphalt A dark-brown-to-black cement-like material containing bitumens as the predominant constituent obtained by petroleum processing; used primarily for road construction. It includes crude asphalt as well as the following finished products: cements, fluxes, the asphalt content of emulsions (exclusive of water), and petroleum distillates blended with asphalt to make cutback asphalts. Note: The

  6. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Pipeline Between PADDs Definitions Key Terms Definition Barrel A unit of volume equal to 42 U.S. gallons. Conventional Blendstock for Oxygenate Blending (CBOB) Motor gasoline blending components intended for blending with oxygenates to produce finished conventional motor gasoline. Conventional Gasoline Finished motor gasoline not included in the oxygenated or reformulated gasoline categories. Excludes reformulated gasoline blendstock for oxygenate blending (RBOB) as well as other blendstock.

  7. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Rail between PAD Districts Definitions Key Terms Definition Crude Oil A mixture of hydrocarbons that exists in liquid phase in natural underground reservoirs and remains liquid at atmospheric pressure after passing through surface separating facilities. Depending upon the characteristics of the crude stream, it may also include: Small amounts of hydrocarbons that exist in gaseous phase in natural underground reservoirs but are liquid at atmospheric pressure after being recovered from oil well

  8. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Rail Definitions Key Terms Definition Crude Oil A mixture of hydrocarbons that exists in liquid phase in natural underground reservoirs and remains liquid at atmospheric pressure after passing through surface separating facilities. Depending upon the characteristics of the crude stream, it may also include: Small amounts of hydrocarbons that exist in gaseous phase in natural underground reservoirs but are liquid at atmospheric pressure after being recovered from oil well (casinghead) gas in

  9. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Imports & Exports Definitions Key Terms Definition All Other Motor Gasoline Blending Components Naphthas (e.g. straight-run gasoline, alkylate, reformate, benzene, toluene, xylene) used for blending or compounding into finished motor gasoline. Includes receipts and inputs of Gasoline Treated as Blendstock (GTAB). Excludes conventional blendstock for oxygenate blending (CBOB), reformulated blendstock for oxygenate blending, oxygenates (e.g. fuel ethanol and methyl tertiary butyl ether),

  10. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Receipts of Crude Oil by Method of Transportation Definitions Key Terms Definition Barrel A unit of volume equal to 42 U.S. gallons. Crude Oil A mixture of hydrocarbons that exists in liquid phase in natural underground reservoirs and remains liquid at atmospheric pressure after passing through surface separating facilities. Depending upon the characteristics of the crude stream, it may also include: Small amounts of hydrocarbons that exist in gaseous phase in natural underground reservoirs but

  11. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Input Definitions Key Terms Definition Barrel A unit of volume equal to 42 U.S. gallons. Blending Plant A facility which has no refining capability but is either capable of producing finished motor gasoline through mechanical blending or blends oxygenates with motor gasoline. Conventional Blendstock for Oxygenate Blending (CBOB) Motor gasoline blending components intended for blending with oxygenates to produce finished conventional motor gasoline. Fuel Ethanol An anhydrous denatured aliphatic

  12. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Net Production Definitions Key Terms Definition Barrel A unit of volume equal to 42 U.S. gallons. Conventional Gasoline Finished motor gasoline not included in the oxygenated or reformulated gasoline categories. Excludes reformulated gasoline blendstock for oxygenate blending (RBOB) as well as other blendstock. Conventional Gasoline, Ed55 and Lower Finished conventional motor gasoline blended with a maximum of 55 volume percent denatured fuel ethanol. Conventional Gasoline, Greater than Ed55

  13. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Crude Stream Definitions Key Terms Definition Crude Oil A mixture of hydrocarbons that exists in liquid phase in natural underground reservoirs and remains liquid at atmospheric pressure after passing through surface separating facilities. Depending upon the characteristics of the crude stream, it may also include: Small amounts of hydrocarbons that exist in gaseous phase in natural underground reservoirs but are liquid at atmospheric pressure after being recovered from oil well (casinghead) gas

  14. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    No. 2 Distillate Prices by Sales Type, Selected States Definitions Key Terms Definition Commercial/Institutional An energy-consuming sector that consists of service-providing facilities and equipment of: businesses; Federal, State, and local governments; and other private and public organizations, such as religious, social, or fraternal groups. The commercial sector includes institutional living quarters. It also includes sewage treatment facilities. Common uses of energy associated with this

  15. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Area Definitions Key Terms Definition Crude Oil A mixture of hydrocarbons that exists in liquid phase in natural underground reservoirs and remains liquid at atmospheric pressure after passing through surface separating facilities. Depending upon the characteristics of the crude stream, it may also include: Small amounts of hydrocarbons that exist in gaseous phase in natural underground reservoirs but are liquid at atmospheric pressure after being recovered from oil well (casinghead) gas in

  16. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Crude Stream Definitions Key Terms Definition Crude Oil A mixture of hydrocarbons that exists in liquid phase in natural underground reservoirs and remains liquid at atmospheric pressure after passing through surface separating facilities. Depending upon the characteristics of the crude stream, it may also include: Small amounts of hydrocarbons that exist in gaseous phase in natural underground reservoirs but are liquid at atmospheric pressure after being recovered from oil well (casinghead) gas

  17. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Crude Oil Stocks at Tank Farms & Pipelines Definitions Key Terms Definition Crude Oil A mixture of hydrocarbons that exists in liquid phase in natural underground reservoirs and remains liquid at atmospheric pressure after passing through surface separating facilities. Depending upon the characteristics of the crude stream, it may also include: Small amounts of hydrocarbons that exist in gaseous phase in natural underground reservoirs but are liquid at atmospheric pressure after being

  18. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Refinery, Bulk Terminal, and Natural Gas Plant Stocks by State Definitions Key Terms Definition Bulk Terminal A facility used primarily for the storage and/or marketing of petroleum products which has a total bulk storage capacity of 50,000 barrels or more and/or receives petroleum products by tanker, barge, or pipeline. Conventional Gasoline Finished motor gasoline not included in the oxygenated or reformulated gasoline categories. Excludes reformulated gasoline blendstock for oxygenate

  19. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Heat Content of Natural Gas Consumed Definitions Key Terms Definition British Thermal Unit (Btu) The quantity of heat required to raise the temperature of 1 pound of liquid water by 1 degree Fahrenheit at the temperature at which water has its greatest density (approximately 39 degrees Fahrenheit). Delivered to Consumers (Heat Content) Heat content of residential, commercial, industrial, vehicle fuel and electric power deliveries to consumers. Electric Power (Heat Content) Heat content of

  20. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Number of Consumers Definitions Key Terms Definition Commercial Consumption Gas used by nonmanufacturing establishments or agencies primarily engaged in the sale of goods or services. Included are such establishments as hotels, restaurants, wholesale and retail stores and other service enterprises; gas used by local, State, and Federal agencies engaged in nonmanufacturing activities. Industrial Consumption Natural gas used for heat, power, or chemical feedstock by manufacturing establishments or

  1. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    State Shares of U.S. Deliveries Definitions Key Terms Definition Commercial Consumption Gas used by nonmanufacturing establishments or agencies primarily engaged in the sale of goods or services. Included are such establishments as hotels, restaurants, wholesale and retail stores and other service enterprises; gas used by local, State, and Federal agencies engaged in nonmanufacturing activities. Delivered (Gas) The physical transfer of natural, synthetic, and/or supplemental gas from facilities

  2. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Consumption by End Use Definitions Key Terms Definition Commercial Consumption Gas used by nonmanufacturing establishments or agencies primarily engaged in the sale of goods or services. Included are such establishments as hotels, restaurants, wholesale and retail stores and other service enterprises; gas used by local, State, and Federal agencies engaged in nonmanufacturing activities. Distribution Use Natural gas used as fuel in the respondent's operations. Electric Power Consumption Gas used

  3. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Associated-Dissolved Proved Reserves, Wet Definitions Key Terms Definition Acquisitions The volume of proved reserves gained by the purchase of an existing fields or properties, from the date of purchase or transfer. Adjustments The quantity which preserves an exact annual reserves balance within each State or State subdivision of the following form: Adjustments + Revision Increases - Revision Decreases - Sales + Acquisitions + Extensions + New Field Discoveries + New Reservoir Discoveries in

  4. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Coalbed Methane Proved Reserves Definitions Key Terms Definition Acquisitions The volume of proved reserves gained by the purchase of an existing fields or properties, from the date of purchase or transfer. Adjustments The quantity which preserves an exact annual reserves balance within each State or State subdivision of the following form: Adjustments + Revision Increases - Revision Decreases - Sales + Acquisitions + Extensions + New Field Discoveries + New Reservoir Discoveries in Old Fields -

  5. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Crude Oil plus Lease Condensate Definitions Key Terms Definition Acquisitions The volume of proved reserves gained by the purchase of an existing fields or properties, from the date of purchase or transfer. Adjustments The quantity which preserves an exact annual reserves balance within each State or State subdivision of the following form: Adjustments + Revision Increases - Revision Decreases - Sales + Acquisitions + Extensions + New Field Discoveries + New Reservoir Discoveries in Old Fields -

  6. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Federal Offshore Gulf of Mexico Deepwater Reserves Definitions Key Terms Definition Crude Oil A mixture of hydrocarbons that exists in liquid phase in natural underground reservoirs and remains liquid at atmospheric pressure after passing through surface separating facilities. Depending upon the characteristics of the crude stream, it may also include: Small amounts of hydrocarbons that exist in gaseous phase in natural underground reservoirs but are liquid at atmospheric pressure after being

  7. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Drilling Activity Definitions Key Terms Definition Active Well Service Rig Count The number of rigs doing true workovers (where tubing is pulled from the well), or doing rod string and pump repair operations, and that are, on average, crewed and working every day of the month. Crude Oil A mixture of hydrocarbons that exists in liquid phase in natural underground reservoirs and remains liquid at atmospheric pressure after passing through surface separating facilities. Depending upon the

  8. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Dry Natural Gas Proved Reserves Definitions Key Terms Definition Acquisitions The volume of proved reserves gained by the purchase of an existing fields or properties, from the date of purchase or transfer. Adjustments The quantity which preserves an exact annual reserves balance within each State or State subdivision of the following form: Adjustments + Revision Increases - Revision Decreases - Sales + Acquisitions + Extensions + New Field Discoveries + New Reservoir Discoveries in Old Fields -

  9. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Lease Condensate Proved Reserves Definitions Key Terms Definition Acquisitions The volume of proved reserves gained by the purchase of an existing fields or properties, from the date of purchase or transfer. Adjustments The quantity which preserves an exact annual reserves balance within each State or State subdivision of the following form: Adjustments + Revision Increases - Revision Decreases - Sales + Acquisitions + Extensions + New Field Discoveries + New Reservoir Discoveries in Old Fields

  10. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Nonassociated Proved Reserves, Wet Definitions Key Terms Definition Acquisitions The volume of proved reserves gained by the purchase of an existing fields or properties, from the date of purchase or transfer. Adjustments The quantity which preserves an exact annual reserves balance within each State or State subdivision of the following form: Adjustments + Revision Increases - Revision Decreases - Sales + Acquisitions + Extensions + New Field Discoveries + New Reservoir Discoveries in Old

  11. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Liquids Proved Reserves Definitions Key Terms Definition Acquisitions The volume of proved reserves gained by the purchase of an existing fields or properties, from the date of purchase or transfer. Adjustments The quantity which preserves an exact annual reserves balance within each State or State subdivision of the following form: Adjustments + Revision Increases - Revision Decreases - Sales + Acquisitions + Extensions + New Field Discoveries + New Reservoir Discoveries in Old Fields - Report

  12. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Plant Liquids Proved Reserves Definitions Key Terms Definition Natural Gas Liquids Those hydrocarbons in natural gas which are separated from the gas through the processes of absorption, condensation, adsorption, or other methods in gas processing or cycling plants. Generally such liquids consist of propane and heavier hydrocarbons and are commonly referred to as condensate, natural gasoline, or liquefied petroleum gases. Where hydrocarbon components lighter than propane are recovered as

  13. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Proved Nonproducing Reserves Definitions Key Terms Definition Associated Dissolved Gas The combined volume of natural gas which occurs in crude oil reservoirs either as free gas (associated) or as gas in solution with crude oil (dissolved). Crude Oil A mixture of hydrocarbons that exists in the liquid phase in natural underground reservoirs and remains liquid at atmospheric pressure after passing through surface separating facilities. Crude oil may also include: Small amounts of hydrocarbons

  14. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Maximum U.S. Active Seismic Crew Counts Definitions Key Terms Definition Dimensions In two-dimensional (2D) reflection seismic surveying both the sound source and the sound detectors (numbering up to a hundred or more per shot) are moved along a straight line. The resultant product can be thought of as a vertical sonic cross-section of the subsurface beneath the survey line. It is constructed by summing many compressional (pressure) wave reflections from the various sound source and sound

  15. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Shale Gas Proved Reserves Definitions Key Terms Definition Acquisitions The volume of proved reserves gained by the purchase of an existing fields or properties, from the date of purchase or transfer. Adjustments The quantity which preserves an exact annual reserves balance within each State or State subdivision of the following form: Adjustments + Revision Increases - Revision Decreases - Sales + Acquisitions + Extensions + New Field Discoveries + New Reservoir Discoveries in Old Fields -

  16. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Natural Gas Proved Reserves, Wet Definitions Key Terms Definition Acquisitions The volume of proved reserves gained by the purchase of an existing fields or properties, from the date of purchase or transfer. Adjustments The quantity which preserves an exact annual reserves balance within each State or State subdivision of the following form: Adjustments + Revision Increases - Revision Decreases - Sales + Acquisitions + Extensions + New Field Discoveries + New Reservoir Discoveries in Old Fields

  17. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Average Depth of Crude Oil and Natural Gas Wells Definitions Key Terms Definition Crude Oil A mixture of hydrocarbons that exists in liquid phase in natural underground reservoirs and remains liquid at atmospheric pressure after passing through surface separating facilities. Depending upon the characteristics of the crude stream, it may also include: Small amounts of hydrocarbons that exist in gaseous phase in natural underground reservoirs but are liquid at atmospheric pressure after being

  18. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Exploratory and Development Wells Definitions Key Terms Definition Crude Oil A mixture of hydrocarbons that exists in liquid phase in natural underground reservoirs and remains liquid at atmospheric pressure after passing through surface separating facilities. Depending upon the characteristics of the crude stream, it may also include: Small amounts of hydrocarbons that exist in gaseous phase in natural underground reservoirs but are liquid at atmospheric pressure after being recovered from oil

  19. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Footage Drilled for Crude Oil and Natural Gas Wells Definitions Key Terms Definition Crude Oil A mixture of hydrocarbons that exists in liquid phase in natural underground reservoirs and remains liquid at atmospheric pressure after passing through surface separating facilities. Depending upon the characteristics of the crude stream, it may also include: Small amounts of hydrocarbons that exist in gaseous phase in natural underground reservoirs but are liquid at atmospheric pressure after being

  20. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Country Definitions Key Terms Definition Exports Natural Gas deliveries out of the Continental United States and Alaska to foreign countries. Liquefied Natural Gas (LNG) Natural gas (primarily methane) that has been liquefied by reducing its temperature to -260 degrees Fahrenheit at atmospheric pressure. Pipeline A continuous pipe conduit, complete with such equipment as valves, compressor stations, communications systems, and meters, for transporting natural and/or supplemental gas from one

  1. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Country Definitions Key Terms Definition Imports Natural Gas received in the Continental United States (including Alaska) from a foreign country. Liquefied Natural Gas (LNG) Natural gas (primarily methane) that has been liquefied by reducing its temperature to -260 degrees Fahrenheit at atmospheric pressure. Pipeline A continuous pipe conduit, complete with such equipment as valves, compressor stations, communications systems, and meters, for transporting natural and/or supplemental gas from one

  2. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    International & Interstate Movements by State Definitions Key Terms Definition Deliveries The physical transfer of natural, synthetic, and/or supplemental gas from facilities operated by the responding company to facilities operated by others or to consumers. Exports Natural Gas deliveries out of the Continental United States and Alaska to foreign countries. Imports Natural Gas received in the Continental United States (including Alaska) from a foreign country. Natural Gas A gaseous mixture

  3. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Point of Exit Definitions Key Terms Definition Exports Natural Gas deliveries out of the Continental United States and Alaska to foreign countries. Liquefied Natural Gas (LNG) Natural gas (primarily methane) that has been liquefied by reducing its temperature to -260 degrees Fahrenheit at atmospheric pressure. Pipeline A continuous pipe conduit, complete with such equipment as valves, compressor stations, communications systems, and meters, for transporting natural and/or supplemental gas from

  4. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Imports & Exports by State Definitions Key Terms Definition Exports Natural Gas deliveries out of the Continental United States and Alaska to foreign countries. Imports Natural Gas received in the Continental United States (including Alaska) from a foreign country. Liquefied Natural Gas (LNG) Natural gas (primarily methane) that has been liquefied by reducing its temperature to -260 degrees Fahrenheit at atmospheric pressure. Pipeline A continuous pipe conduit, complete with such equipment

  5. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Residential and Commercial Prices by Local Distributors & Marketers Definitions Key Terms Definition Commercial Price The price of gas used by nonmanufacturing establishments or agencies primarily engaged in the sale of goods or services such as hotels, restaurants, wholesale and retail stores and other service enterprises; and gas used by local, State and Federal agencies engaged in nonmanufacturing activities. Local Distribution Company (LDC) A legal entity engaged primarily in the retail

  6. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Gulf of Mexico Federal Offshore Production Definitions Key Terms Definition Crude Oil A mixture of hydrocarbons that exists in liquid phase in natural underground reservoirs and remains liquid at atmospheric pressure after passing through surface separating facilities. Depending upon the characteristics of the crude stream, it may also include: Small amounts of hydrocarbons that exist in gaseous phase in natural underground reservoirs but are liquid at atmospheric pressure after being recovered

  7. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Lease Condensate Production Definitions Key Terms Definition Lease Condensate A mixture consisting primarily of pentanes and heavier hydrocarbons which is recovered as a liquid from natural gas in lease separation facilities. This category excludes natural gas plant liquids, such as butane and propane, which are recovered at downstream natural gas processing plants or facilities. Production, Lease Condensate The volume of lease condensate produced during the report year. Lease condensate volumes

  8. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Natural Gas Plant Liquids Production Definitions Key Terms Definition Natural Gas Liquids Those hydrocarbons in natural gas which are separated from the gas through the processes of absorption, condensation, adsorption, or other methods in gas processing or cycling plants. Generally such liquids consist of propane and heavier hydrocarbons and are commonly referred to as condensate, natural gasoline, or liquefied petroleum gases. Where hydrocarbon components lighter than propane are recovered as

  9. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Offshore Gross Withdrawals Definitions Key Terms Definition Gas Well A well completed for the production of natural gas from one or more gas zones or reservoirs. Such wells contain no completions for the production of crude oil. Gross Withdrawals Full well-stream volume, including all natural gas plant liquids and all nonhydrocarbon gases, but excluding lease condensate. Also includes amounts delivered as royalty payments or consumed in field operations. Offshore Located in either State or

  10. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Plant Processing Definitions Key Terms Definition Extraction Loss The reduction in volume of natural gas due to the removal of natural gas liquid constituents such as ethane, propane, and butane at natural gas processing plants. Natural Gas Processed Natural gas that has gone through a processing plant. Natural Gas Processing Plant A facility designed to recover natural gas liquids from a stream of natural gas which may or may not have passed through lease separators and/or field separation

  11. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Supplemental Supplies Definitions Key Terms Definition Biomass Gas A medium Btu gas containing methane and carbon dioxide, resulting from the action of microorganisms on organic materials such as a landfill. Blast-furnace Gas The waste combustible gas generated in a blast furnace when iron ore is being reduced with coke to metallic iron. It is commonly used as a fuel within steel works. British Thermal Unit (Btu) The quantity of heat required to raise the temperature of 1 pound of liquid water

  12. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Wellhead Value & Marketed Production Definitions Key Terms Definition Marketed Production Gross withdrawals less gas used for repressuring, quantities vented and flared, and nonhydrocarbon gases removed in treating or processing operations. Includes all quantities of gas used in field and processing plant operations. Production The volume of natural gas withdrawn from reservoirs less (1) the volume returned to such reservoirs in cycling, repressuring of oil reservoirs, and conservation

  13. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Capacity Definitions Key Terms Definition Aquifer Storage Field A sub-surface facility for storing natural gas, consisting of water-bearing sands topped by an impermeable cap rock. Depleted Reservoir Storage Field A sub-surface natural geological reservoir, usually a depleted gas or oil field, used for storing natural gas. Natural Gas A gaseous mixture of hydrocarbon compounds, the primary one being methane. Salt Dome Storage Field (Salt Cavern) A storage facility that is a cavern hollowed out

  14. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Annual Supply & Disposition by State Definitions Key Terms Definition Balancing Item Represents the difference between the sum of the components of natural gas supply and the sum of the components of natural gas disposition. These differences maybe due to quantities lost or to the effects of data reporting problems. Reporting problems include differences due to the net result of conversions of flow data metered at varying temperature and pressure bases and converted to a standard temperature

  15. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    U.S. Monthly Supply & Disposition Definitions Key Terms Definition Balancing Item Represents the difference between the sum of the components of natural gas supply and the sum of the components of natural gas disposition. These differences maybe due to quantities lost or to the effects of data reporting problems. Reporting problems include differences due to the net result of conversions of flow data metered at varying temperature and pressure bases and converted to a standard temperature

  16. Cryptographic Key Management System

    SciTech Connect (OSTI)

    No, author

    2014-02-21

    This report summarizes the outcome of U.S. Department of Energy (DOE) contract DE-OE0000543, requesting the design of a Cryptographic Key Management System (CKMS) for the secure management of cryptographic keys for the energy sector infrastructure. Prime contractor Sypris Electronics, in collaboration with Oak Ridge National Laboratories (ORNL), Electric Power Research Institute (EPRI), Valicore Technologies, and Purdue University's Center for Education and Research in Information Assurance and Security (CERIAS) and Smart Meter Integration Laboratory (SMIL), has designed, developed and evaluated the CKMS solution. We provide an overview of the project in Section 3, review the core contributions of all contractors in Section 4, and discuss bene ts to the DOE in Section 5. In Section 6 we describe the technical construction of the CKMS solution, and review its key contributions in Section 6.9. Section 7 describes the evaluation and demonstration of the CKMS solution in different environments. We summarize the key project objectives in Section 8, list publications resulting from the project in Section 9, and conclude with a discussion on commercialization in Section 10 and future work in Section 11.

  17. Unexpected Cancellations in Gravity Theories

    SciTech Connect (OSTI)

    Bern, Z.; Carrasco, J.J.; Forde, D.; Ita, H.; Johansson, H.; /UCLA

    2007-07-13

    Recent computations of scattering amplitudes show that N = 8 supergravity is surprisingly well behaved in the ultraviolet and may even be ultraviolet finite in perturbation theory. The novel cancellations necessary for ultraviolet finiteness first appear at one loop in the guise of the ''no-triangle hypothesis''. We study one-loop amplitudes in pure Einstein gravity and point out the existence of cancellations similar to those found previously in N = 8 supergravity. These cancellations go beyond those found in the one-loop effective action. Using unitarity, this suggests that generic theories of quantum gravity based on the Einstein-Hilbert action may be better behaved in the ultraviolet at higher loops than suggested by naive power counting, though without additional (supersymmetric) cancellations they diverge. We comment on future studies that should be performed to support this proposal.

  18. Measurement analysis and quantum gravity

    SciTech Connect (OSTI)

    Albers, Mark; Kiefer, Claus; Reginatto, Marcel

    2008-09-15

    We consider the question of whether consistency arguments based on measurement theory show that the gravitational field must be quantized. Motivated by the argument of Eppley and Hannah, we apply a DeWitt-type measurement analysis to a coupled system that consists of a gravitational wave interacting with a mass cube. We also review the arguments of Eppley and Hannah and of DeWitt, and investigate a second model in which a gravitational wave interacts with a quantized scalar field. We argue that one cannot conclude from the existing gedanken experiments that gravity has to be quantized. Despite the many physical arguments which speak in favor of a quantum theory of gravity, it appears that the justification for such a theory must be based on empirical tests and does not follow from logical arguments alone.

  19. Emergent Horava gravity in graphene

    SciTech Connect (OSTI)

    Volovik, G.E.; L. D. Landau Institute for Theoretical Physics, Kosygina 2, 119334 Moscow ; Zubkov, M.A.

    2014-01-15

    First of all, we reconsider the tight-binding model of monolayer graphene, in which the variations of the hopping parameters are allowed. We demonstrate that the emergent 2D Weitzenbock geometry as well as the emergent U(1) gauge field appear. The emergent gauge field is equal to the linear combination of the components of the zweibein. Therefore, we actually deal with the gauge fixed version of the emergent 2+1 D teleparallel gravity. In particular, we work out the case, when the variations of the hopping parameters are due to the elastic deformations, and relate the elastic deformations with the emergent zweibein. Next, we investigate the tight-binding model with the varying intralayer hopping parameters for the multilayer graphene with the ABC stacking. In this case the emergent 2D Weitzenbock geometry and the emergent U(1) gauge field appear as well, and the emergent low energy effective field theory has the anisotropic scaling. -- Highlights: The tight-binding model for graphene with varying hopping parameters is considered. The emergent gravity and emergent gauge fields are derived. For the case of the multilayer graphene we obtain the analogue of Horava gravity with anisotropic scaling.

  20. NREL Makes Key Appointments

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Makes Key Appointments Staffing for Distributed Energy and Tech Management Announced For more information contact: Gary Schmitz, 303-275-4050 email: Gary Schmitz Golden, Colo., Feb. 28, 2001 - Two veterans of energy research have been named to newly created positions at the U.S. Department of Energy's National Renewable Energy Laboratory. Jack Darnell was named Deputy Associate Director for NREL's recently reorganized Planning and Technology Management Division. Anthony Schaffhauser has been

  1. Bioenergy Key Publications

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    KEY PUBLICATIONS BIOENERGY TECHNOLOGIES OFFICE Budget and Investment Resources PUBLICATION TITLE PUBLICATION DATE Bioenergy Technologies Office FY 2015 Budget-at-a-Glance March 2014 FY 2015 Congressional Budget Request (pp. 53-71) March 2014 American Recovery and Reinvestment Act: Bioenergy Technologies Office Investments June 2012 2013 Peer Review Report February 2014 Office Overview Resources PUBLICATION TITLE PUBLICATION DATE Bioenergy Technologies Office Walkthrough Presentation July 2014

  2. NETL: Key Staff

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Key Staff Grace M. Bochenek, Ph.D.-Director As NETL Director, Dr. Bochenek manages the complete NETL complex including delivery and execution of the Laboratory's mission. She joined NETL in October 2014 with more than 25 years of technical and management experience with the U.S. Department of Defense. Before joining NETL, Dr. Bochenek was the first Chief Technology Officer of the U.S. Army Materiel Command, where she served as the principal technical advisor on all engineering and scientific

  3. F.O.B. Costs of Imported Crude Oil by API Gravity

    U.S. Energy Information Administration (EIA) (indexed site)

    API Gravity (Dollars per Barrel) Period: Monthly Annual Download Series History Download Series History Definitions, Sources & Notes Definitions, Sources & Notes API Gravity Mar-16 Apr-16 May-16 Jun-16 Jul-16 Aug-16 View History 20.0º or Less 26.57 29.03 35.85 39.85 36.05 36.83 1983-2016 20.1º to 25.0º 26.35 29.59 35.32 37.92 35.46 34.62 1983-2016 25.1º to 30.0º 30.41 36.10 40.01 43.98 40.31 41.13 1983-2016 30.1º to 35.0º 35.27 37.76 45.82 46.85 42.71 41.54 1983-2016 35.1º to

  4. Born-Infeld gravity in three dimensions

    SciTech Connect (OSTI)

    Alishahiha, Mohsen; Naseh, Ali; Soltanpanahi, Hesam

    2010-07-15

    In this paper we explore different aspects of three dimensional Born-Infeld as well as Born-Infeld-Chern-Simons gravity. We show that the models have anti-de Sitter and anti-de Sitter wave vacuum solutions. Moreover, we observe that although Born-Infeld-Chern-Simons gravity admits a logarithmic solution, Born-Infeld gravity does not, though it has a limiting logarithmic solution as we approach the critical point.

  5. Ground Gravity Survey | Open Energy Information

    Open Energy Information (Open El) [EERE & EIA]

    Et Al., 2000) Dixie Valley Geothermal Area 1999 2000 Precise Gravimetry and Geothermal Reservoir Management Ground Gravity Survey At Dixie Valley Geothermal Area (Blackwell, Et...

  6. Gravity Data for west-central Colorado

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Zehner, Richard

    2012-04-06

    Modeled Bouger Gravity data was extracted from the Pan American Center for Earth and Environmental Studies Gravity Database of the U.S. at http://irpsrvgis08.utep.edu/viewers/Flex/GravityMagnetic/GravityMagnetic_CyberShare/ on 2/29/2012. The downloaded text file was opened in an Excel spreadsheet. This spreadsheet data was then converted into an ESRI point shapefile in UTM Zone 13 NAD27 projection, showing location and gravity (in milligals). This data was then converted to grid and then contoured using ESRI Spatial Analyst. This dataset contains the original spreadsheet data, a point shapefile showing gravity station locations and Bouger gravity, and a line shapefile showing 1 milligal contours. Projection: UTM Zone 13 NAD27 Gravity Contour Shapefile Extent: West -108.366690 East -105.478730 North 40.932318 South 36.961606 Gravity Point Shapefile Extent: West -108.366692 East -105.478847 North 40.932361 South 36.961606 Data from From University of Texas: Pan American Center for Earth and Environmental Studies

  7. Growth histories in bimetric massive gravity

    SciTech Connect (OSTI)

    Berg, Marcus; Buchberger, Igor; Enander, Jonas; Mrtsell, Edvard; Sjrs, Stefan E-mail: igor.buchberger@kau.se E-mail: edvard@fysik.su.se

    2012-12-01

    We perform cosmological perturbation theory in Hassan-Rosen bimetric gravity for general homogeneous and isotropic backgrounds. In the de Sitter approximation, we obtain decoupled sets of massless and massive scalar gravitational fluctuations. Matter perturbations then evolve like in Einstein gravity. We perturb the future de Sitter regime by the ratio of matter to dark energy, producing quasi-de Sitter space. In this more general setting the massive and massless fluctuations mix. We argue that in the quasi-de Sitter regime, the growth of structure in bimetric gravity differs from that of Einstein gravity.

  8. Airborne Gravity Survey | Open Energy Information

    Open Energy Information (Open El) [EERE & EIA]

    Gravity Techniques Information Provided by Technique Lithology: Distribution of density in the subsurface enables inference of rock type. StratigraphicStructural:...

  9. Simultaneous measurement of gravity acceleration and gravity gradient with an atom interferometer

    SciTech Connect (OSTI)

    Sorrentino, F.; Lien, Y.-H.; Rosi, G.; Tino, G. M.; Bertoldi, A.; Bodart, Q.; Cacciapuoti, L.; Angelis, M. de; Prevedelli, M.

    2012-09-10

    We demonstrate a method to measure the gravitational acceleration with a dual cloud atom interferometer; the use of simultaneous atom interferometers reduces the effect of seismic noise on the gravity measurement. At the same time, the apparatus is capable of accurate measurements of the vertical gravity gradient. The ability to determine the gravity acceleration and gravity gradient simultaneously and with the same instrument opens interesting perspectives in geophysical applications.

  10. Negative mass solitons in gravity

    SciTech Connect (OSTI)

    Cebeci, Hakan; Sarioglu, Oezguer; Tekin, Bayram

    2006-03-15

    We first reconstruct the conserved (Abbott-Deser) charges in the spin-connection formalism of gravity for asymptotically (Anti)-de Sitter spaces, and then compute the masses of the AdS soliton and the recently found Eguchi-Hanson solitons in generic odd dimensions, unlike the previous result obtained for only five dimensions. These solutions have negative masses compared to the global AdS or AdS/Z{sub p} spacetimes. As a separate note, we also compute the masses of the recent even dimensional Taub-NUT-Reissner-Nordstroem metrics.

  11. Employee Spotlight: Baris Key | Argonne National Laboratory

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Employee Spotlight: Baris Key Share

  12. Naked singularities and quantum gravity

    SciTech Connect (OSTI)

    Harada, Tomohiro; Iguchi, Hideo; Nakao, Ken-ichi; Singh, T. P.; Tanaka, Takahiro; Vaz, Cenalo

    2001-08-15

    There are known models of spherical gravitational collapse in which the collapse ends in a naked shell-focusing singularity for some initial data. If a massless scalar field is quantized on the classical background provided by such a star, it is found that the outgoing quantum flux of the scalar field diverges in the approach to the Cauchy horizon. We argue that the semiclassical approximation (i.e., quantum field theory on a classical curved background) used in these analyses ceases to be valid about one Planck time before the epoch of naked singularity formation, because by then the curvature in the central region of the star reaches the Planck scale. It is shown that during the epoch in which the semiclassical approximation is valid, the total emitted energy is about one Planck unit, and is not divergent. We also argue that back reaction in this model does not become important so long as gravity can be treated classically. It follows that the further evolution of the star will be determined by quantum gravitational effects, and without invoking quantum gravity it is not possible to say whether the star radiates away on a short time scale or settles down into a black hole state.

  13. Key Terms | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Key Terms Key Terms Three Door Keys data-key-571156_960_720.png Key Terms Low Vision: non-correctable reduced vision Blindness: lack of visual perception Hearing Impairment: full or partial decrease in the ability to detect or understand sounds Physical Impairment: a physical condition that permanently prevents normal body movement or control Cognitive Disabilities: difficulty with one or more types of mental tasks

  14. A cosmological study in massive gravity theory

    SciTech Connect (OSTI)

    Pan, Supriya Chakraborty, Subenoy

    2015-09-15

    A detailed study of the various cosmological aspects in massive gravity theory has been presented in the present work. For the homogeneous and isotropic FLRW model, the deceleration parameter has been evaluated, and, it has been examined whether there is any transition from deceleration to acceleration in recent past, or not. With the proper choice of the free parameters, it has been shown that the massive gravity theory is equivalent to Einstein gravity with a modified Newtonian gravitational constant together with a negative cosmological constant. Also, in this context, it has been examined whether the emergent scenario is possible, or not, in massive gravity theory. Finally, we have done a cosmographic analysis in massive gravity theory.

  15. Negative Effective Gravity in Water Waves by Periodic Resonator...

    Office of Scientific and Technical Information (OSTI)

    Negative Effective Gravity in Water Waves by Periodic Resonator Arrays Prev Next Title: Negative Effective Gravity in Water Waves by Periodic Resonator Arrays Authors: Hu,...

  16. Ground Gravity Survey At Clear Lake Area (Skokan, 1993) | Open...

    Open Energy Information (Open El) [EERE & EIA]

    Ground Gravity Survey At Clear Lake Area (Skokan, 1993) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground Gravity Survey At Clear Lake Area...

  17. A new quasidilaton theory of massive gravity (Journal Article...

    Office of Scientific and Technical Information (OSTI)

    A new quasidilaton theory of massive gravity Citation Details In-Document Search Title: A new quasidilaton theory of massive gravity We present a new quasidilaton theory of...

  18. Ground Gravity Survey At Coso Geothermal Area (1980) | Open Energy...

    Open Energy Information (Open El) [EERE & EIA]

    Ground Gravity Survey At Coso Geothermal Area (1980) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground Gravity Survey At Coso Geothermal...

  19. Ground Gravity Survey At Crump's Hot Springs Area (DOE GTP) ...

    Open Energy Information (Open El) [EERE & EIA]

    Ground Gravity Survey At Crump's Hot Springs Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground Gravity Survey At Crump's Hot...

  20. Category:Airborne Gravity Survey | Open Energy Information

    Open Energy Information (Open El) [EERE & EIA]

    Category Edit History Category:Airborne Gravity Survey Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Geothermalpower.jpg Looking for the Airborne Gravity Survey...

  1. Ground Gravity Survey At North Brawley Geothermal Area (Biehler...

    Open Energy Information (Open El) [EERE & EIA]

    Ground Gravity Survey At North Brawley Geothermal Area (Biehler, 1964) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground Gravity Survey At...

  2. Ground Gravity Survey At Cove Fort Area - Vapor (Warpinski, Et...

    Open Energy Information (Open El) [EERE & EIA]

    Ground Gravity Survey At Cove Fort Area - Vapor (Warpinski, Et Al., 2002) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground Gravity Survey...

  3. Ground Gravity Survey At Kilauea East Rift Geothermal Area (FURUMOTO...

    Open Energy Information (Open El) [EERE & EIA]

    Ground Gravity Survey At Kilauea East Rift Geothermal Area (FURUMOTO, 1976) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground Gravity Survey...

  4. Ground Gravity Survey At Snake River Plain Region (DOE GTP) ...

    Open Energy Information (Open El) [EERE & EIA]

    Ground Gravity Survey At Snake River Plain Region (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground Gravity Survey At Snake River...

  5. Ground Gravity Survey At Kilauea East Rift Geothermal Area (Thomas...

    Open Energy Information (Open El) [EERE & EIA]

    Ground Gravity Survey At Kilauea East Rift Geothermal Area (Thomas, 1986) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground Gravity Survey...

  6. Ground Gravity Survey At Kilauea East Rift Geothermal Area (Broyles...

    Open Energy Information (Open El) [EERE & EIA]

    Ground Gravity Survey At Kilauea East Rift Geothermal Area (Broyles, Et Al., 1979) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground Gravity...

  7. Integration of Full Tensor Gravity and ZTEM Passive Low Frequency...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Data Acquisition Integration of Full Tensor Gravity and ZTEM Passive Low Frequency EM Instruments for Simultaneous Data Acquisition Integration of Full Tensor Gravity and ...

  8. Cosmological singularities in Born-Infeld determinantal gravity...

    Office of Scientific and Technical Information (OSTI)

    Cosmological singularities in Born-Infeld determinantal gravity Citation Details In-Document Search Title: Cosmological singularities in Born-Infeld determinantal gravity Authors: ...

  9. Problems with propagation and time evolution in f ( T ) gravity...

    Office of Scientific and Technical Information (OSTI)

    Problems with propagation and time evolution in f ( T ) gravity Citation Details In-Document Search Title: Problems with propagation and time evolution in f ( T ) gravity Authors: ...

  10. MOSRC Field Definitions 01202016 MOSRC Field Definitions

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    MOSRC Field Definitions 01202016 MOSRC Field Definitions 1/5 1/20/2016 Field Name Definition Prime Contract Procurement Instrument Identifier The unique Prime Contractor identifier as it is recorded on the original (or base) contract in FPDS-NG. This must be a valid DOE M&O PIID, as recorded in FPDS-NG. Prime Contract DUNS Number The Prime Contractor's Dun and Bradstreet Data Universal Numbering System (DUNS) as it is recorded on the prime contract in FPDS-NG. Subcontract DUNS Number The

  11. Baris Key | Argonne National Laboratory

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Baris Key Assistant Chemist Telephone (630) 252-7351 E-mail bkey@anl.gov Projects Interfacial Materials Chemistry

  12. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    Plant Field Production Definitions Key Terms Definition Barrel A unit of volume equal to 42 U.S. gallons. Butylene (C4H8) An olefinic hydrocarbon recovered from refinery processes. Ethane (C2H6) A normally gaseous straight-chain hydrocarbon. It is a colorless paraffinic gas that boils at a temperature of -127.48º F. It is extracted from natural gas and refinery gas streams. Field Production Represents crude oil production on leases, natural gas liquids production at natural gas processing

  13. Secure key storage and distribution

    SciTech Connect (OSTI)

    Agrawal, Punit

    2015-06-02

    This disclosure describes a distributed, fault-tolerant security system that enables the secure storage and distribution of private keys. In one implementation, the security system includes a plurality of computing resources that independently store private keys provided by publishers and encrypted using a single security system public key. To protect against malicious activity, the security system private key necessary to decrypt the publication private keys is not stored at any of the computing resources. Rather portions, or shares of the security system private key are stored at each of the computing resources within the security system and multiple security systems must communicate and share partial decryptions in order to decrypt the stored private key.

  14. Gauge natural formulation of conformal gravity

    SciTech Connect (OSTI)

    Campigotto, M.; Fatibene, L.

    2015-03-15

    We consider conformal gravity as a gauge natural theory. We study its conservation laws and superpotentials. We also consider the Mannheim and Kazanas spherically symmetric vacuum solution and discuss conserved quantities associated to conformal and diffeomorphism symmetries.

  15. Bouguer gravity map | Open Energy Information

    Open Energy Information (Open El) [EERE & EIA]

    LibraryAdd to library Map: Bouguer gravity mapInfo GraphicMapChart Cartographers J. Behrendt and L. Bajwa Organization U.S. Geological Survey Published U.S. Geological...

  16. Quantum gravity and renormalization: The tensor track

    SciTech Connect (OSTI)

    Rivasseau, Vincent

    2012-06-27

    We propose a new program to quantize and renormalize gravity based on recent progress on the analysis of large random tensors. We compare it briefly with other existing approaches.

  17. I. Definition and Scope

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    - Smart Grid RFI Page 2 November 1, 2010 I. Definition and Scope I.1. We invite comment however on whether this [Title XIII] is the best way to define the smart grid. What significant policy challenges are likely to remain unaddressed if we employ Title XIII's definition? If the definition is overly broad, what policy risks emerge as a result? * While Title XIII starts framing the necessary committee's and organizations needed to start outlining the Smart Grid discussion, it is lacking in the

  18. Gravity waves from cosmic bubble collisions

    SciTech Connect (OSTI)

    Salem, Michael P.; Saraswat, Prashant; Shaghoulian, Edgar E-mail: ps88@stanford.edu

    2013-02-01

    Our local Hubble volume might be contained within a bubble that nucleated in a false vacuum with only two large spatial dimensions. We study bubble collisions in this scenario and find that they generate gravity waves, which are made possible in this context by the reduced symmetry of the global geometry. These gravity waves would produce B-mode polarization in the cosmic microwave background, which could in principle dominate over the inflationary background.

  19. Definition of Radiation

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Gamma Radiation and X-Rays Beta Radiation Alpha Radiation Irradiation Radioactive Contamination Definitions Detection Measurement Safety Around Radiation Sources Types of ...

  20. Measuring antimatter gravity with muonium

    DOE PAGES-Beta [OSTI]

    Kaplan, Daniel M.; Kirch, Klaus; Mancini, Derrick; Phillips, James D.; Phillips, Thomas J.; Roberts, Thomas J.; Terry, Jeff; Bravina, L.; Foka, Y.; Kabana, S.

    2015-05-29

    The gravitational acceleration of antimatter, ¯g, has never been directly measured and could bear importantly on our understanding of gravity, the possible existence of a fifth force, and the nature and early history of the universe. Only two avenues for such a measurement appear to be feasible: antihydrogen and muonium. The muonium measurement requires a novel, monoenergetic, low-velocity, horizontal muonium beam directed at an atom interferometer. The precision three-grating interferometer can be produced in silicon nitride or ultrananocrystalline diamond using state-of-the-art nanofabrication. The required precision alignment and calibration at the picometer level also appear to be feasible. With 100 nmmore » grating pitch, a 10% measurement of ¯g can be made using some months of surface-muon beam time, and a 1% or better measurement with a correspondingly larger exposure. This could constitute the first gravitational measurement of leptonic matter, of 2nd-generation matter and, possibly, the first measurement of the gravitational acceleration of antimatter.« less

  1. Nonderivative modified gravity: a classification

    SciTech Connect (OSTI)

    Comelli, D.; Nesti, F.; Pilo, L. E-mail: fabrizio.nesti@irb.hr

    2014-11-01

    We analyze the theories of gravity modified by a generic nonderivative potential built from the metric, under the minimal requirement of unbroken spatial rotations. Using the canonical analysis, we classify the potentials V according to the number of degrees of freedom (DoF) that propagate at the nonperturbative level. We then compare the nonperturbative results with the perturbative DoF propagating around Minkowski and FRW backgrounds. A generic V implies 6 propagating DoF at the non-perturbative level, with a ghost on Minkowski background. There exist potentials which propagate 5 DoF, as already studied in previous works. Here, no V with unbroken rotational invariance admitting 4 DoF is found. Theories with 3 DoF turn out to be strongly coupled on Minkowski background. Finally, potentials with only the 2 DoF of a massive graviton exist. Their effect on cosmology is simply equivalent to a cosmological constant. Potentials with 2 or 5 DoF and explicit time dependence appear to be a further viable possibility.

  2. Measuring antimatter gravity with muonium

    SciTech Connect (OSTI)

    Kaplan, Daniel M.; Kirch, Klaus; Mancini, Derrick; Phillips, James D.; Phillips, Thomas J.; Roberts, Thomas J.; Terry, Jeff; Bravina, L.; Foka, Y.; Kabana, S.

    2015-05-29

    The gravitational acceleration of antimatter, ¯g, has never been directly measured and could bear importantly on our understanding of gravity, the possible existence of a fifth force, and the nature and early history of the universe. Only two avenues for such a measurement appear to be feasible: antihydrogen and muonium. The muonium measurement requires a novel, monoenergetic, low-velocity, horizontal muonium beam directed at an atom interferometer. The precision three-grating interferometer can be produced in silicon nitride or ultrananocrystalline diamond using state-of-the-art nanofabrication. The required precision alignment and calibration at the picometer level also appear to be feasible. With 100 nm grating pitch, a 10% measurement of ¯g can be made using some months of surface-muon beam time, and a 1% or better measurement with a correspondingly larger exposure. This could constitute the first gravitational measurement of leptonic matter, of 2nd-generation matter and, possibly, the first measurement of the gravitational acceleration of antimatter.

  3. Evaluation Ratings Definitions (Excluding Utilization of Small...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    (Excluding Utilization of Small Business) Rating Definition Note Exceptional ... Definitions (Utilization of Small Business) Rating Definition Note Exceptional ...

  4. Key Activities | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    About the Bioenergy Technologies Office » Key Activities Key Activities The Bioenergy Technologies Office's key activities are aimed at producing a viable, sustainable domestic biomass industry that produces renewable biofuels, bioproducts and biopower; enhances U.S. energy security; reduces U.S. oil dependence; provides environmental benefits (e.g., reduced greenhouse gas emissions); and creates nationwide economic opportunities. Meeting these goals requires significant and rapid advances in

  5. Key Activities | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    About the Program » Key Activities Key Activities The Water Power Program conducts work in four key areas at the forefront of water power research. The Program is structured to help the United States meet its growing energy demands sustainably and cost-effectively by developing innovative renewable water power technologies, breaking down market barriers to deployment, building the infrastructure to test new technologies, and assessing water power resources for integration into our nation's

  6. Baris Key | Argonne National Laboratory

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Baris Key July 31, 2014 Tweet EmailPrint Baris Key is an Assistant Chemist in Argonne's Chemical Sciences & Engineering Division. In his Employee Spotlight video, Key talks about the gap national labs like Argonne fill in mankind's pursuit of scientific and technological breakthroughs as well as his work to improve our understanding and application of energy storage, which will be a key factor in our effort to forge a more sustainable energy future. "We do all the high-risk research

  7. SEC L_Attach G_Key Personnel Cost Sheet

    National Nuclear Security Administration (NNSA)

    L, Attachment G - Management Team Cost Sheet Definitions of items to be included in the worksheet Name Title Key Personnel (Y/N) Reimbursable Annual Base Salary Reimbursable Incentive Pay and bonuses Reimbursable Deferred compensation Reimbursable Employer contributions to Employee Stock Ownership Plans (ESOPs) Reimbursable Employer Contributions to Defined Contribution Pension Plans Current Annual Base Salary Current Total Annual Compensation An ESOP is a stock bonus plan designed to invest

  8. Dentritic morphology and microsegregation in directionally solidified superalloy, PWA-1480, single crystal: Effect of gravity; center director's discretionary fund report

    SciTech Connect (OSTI)

    Tewari, S.N.; Kumar, M.V.; Lee, J.E.; Curreri, P.A.

    1990-11-01

    Primary dendrite spacings, secondary dendrite spacings, and microsegregation have been examined in PWA-1480 single crystal specimens which were directionally solidified during parabolic maneuvers on the KC-135 aircraft. Experimentally observed growth rate and thermal gradient dependence of primary dendrite spacings are in good agreement with predictions from dendrite growth models for binary alloys. Secondary dendrite coarsening kinetics show a reasonable fit with the predictions from an analytical model proposed by Kirkwood for a binary alloy. The partition coefficients of tantalum, titanium, and aluminum are observed to be less than unity, while that for tungsten and cobalt are greater than unity. This is qualitatively similar to the nickel base binaries. Microsegregation profiles experimentally observed for PWA-1480 superalloy show a good fit with Bower, Brody, and Flemings model developed for binary alloys. Transitions in gravity levels do not appear to affect primary dendrite spacings. A trend of decreased secondary arm spacings with transition from high gravity to the low gravity period was observed at a growth speed of 0.023 cm s(exp -1). However, definite conclusions can only be drawn by experiments at lower growth speeds which make it possible to examine the side-branch coarsening kinetics over a longer duration. Such experiments, not possible due to the insufficient low-gravity time of the KC-135, may be carried out in the low-gravity environment of space.

  9. Massive gravity wrapped in the cosmic web

    SciTech Connect (OSTI)

    Shim, Junsup; Lee, Jounghun; Li, Baojiu E-mail: jounghun@astro.snu.ac.kr

    2014-03-20

    We study how the filamentary pattern of the cosmic web changes if the true gravity deviates from general relativity (GR) on a large scale. The f(R) gravity, whose strength is controlled to satisfy the current observational constraints on the cluster scale, is adopted as our fiducial model and a large, high-resolution N-body simulation is utilized for this study. By applying the minimal spanning tree algorithm to the halo catalogs from the simulation at various epochs, we identify the main stems of the rich superclusters located in the most prominent filamentary section of the cosmic web and determine their spatial extents per member cluster to be the degree of their straightness. It is found that the f(R) gravity has the effect of significantly bending the superclusters and that the effect becomes stronger as the universe evolves. Even in the case where the deviation from GR is too small to be detectable by any other observables, the degree of the supercluster straightness exhibits a conspicuous difference between the f(R) and the GR models. Our results also imply that the supercluster straightness could be a useful discriminator of f(R) gravity from the coupled dark energy since it is shown to evolve differently between the two models. As a final conclusion, the degree of the straightness of the rich superclusters should provide a powerful cosmological test of large scale gravity.

  10. Key Issues | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Key Issues Key Issues The following presentations offer information about other key topics related to high performance homes. wall_system_innovations_kochkin.pdf (1.48 MB) removing_codes_barriers_cole.pdf (479.86 KB) testing_residential_ariconditioners_booten_winkler.pdf (5.21 MB) code_gaps_combustion_safety.pdf (1.34 MB) automated_utility_bill_calibration_polly.pdf (1.64 MB) predicting_envelope_leakage_griffiths.pdf (1.63 MB) More Documents & Publications Code Gaps and Future Research Needs

  11. Quantum gravity effects in the Kerr spacetime

    SciTech Connect (OSTI)

    Reuter, M.; Tuiran, E.

    2011-02-15

    We analyze the impact of the leading quantum gravity effects on the properties of black holes with nonzero angular momentum by performing a suitable renormalization group improvement of the classical Kerr metric within quantum Einstein gravity. In particular, we explore the structure of the horizons, the ergosphere, and the static limit surfaces as well as the phase space available for the Penrose process. The positivity properties of the effective vacuum energy-momentum tensor are also discussed and the 'dressing' of the black hole's mass and angular momentum are investigated by computing the corresponding Komar integrals. The pertinent Smarr formula turns out to retain its classical form. As for their thermodynamical properties, a modified first law of black-hole thermodynamics is found to be satisfied by the improved black holes (to second order in the angular momentum); the corresponding Bekenstein-Hawking temperature is not proportional to the surface gravity.

  12. Charged black holes in generalized teleparallel gravity

    SciTech Connect (OSTI)

    Rodrigues, M.E.; Houndjo, M.J.S.; Tossa, J.; Momeni, D.; Myrzakulov, R. E-mail: sthoundjo@yahoo.fr E-mail: d.momeni@yahoo.com

    2013-11-01

    In this paper we investigate charged static black holes in 4D for generalized teleparallel models of gravity, based on torsion as the geometric object for describing gravity according to the equivalence principle. As a motivated idea, we introduce a set of non-diagonal tetrads and derive the full system of non linear differential equations. We prove that the common Schwarzschild gauge is applicable only when we study linear f(T) case. We reobtain the Reissner-Nordstrom-de Sitter (or RN-AdS) solution for the linear case of f(T) and perform a parametric cosmological reconstruction for two nonlinear models. We also study in detail a type of the no-go theorem in the framework of this modified teleparallel gravity.

  13. Astrophysical black holes in screened modified gravity

    SciTech Connect (OSTI)

    Davis, Anne-Christine; Jha, Rahul; Muir, Jessica; Gregory, Ruth E-mail: r.a.w.gregory@durham.ac.uk E-mail: jlmuir@umich.edu

    2014-08-01

    Chameleon, environmentally dependent dilaton, and symmetron gravity are three models of modified gravity in which the effects of the additional scalar degree of freedom are screened in dense environments. They have been extensively studied in laboratory, cosmological, and astrophysical contexts. In this paper, we present a preliminary investigation into whether additional constraints can be provided by studying these scalar fields around black holes. By looking at the properties of a static, spherically symmetric black hole, we find that the presence of a non-uniform matter distribution induces a non-constant scalar profile in chameleon and dilaton, but not necessarily symmetron gravity. An order of magnitude estimate shows that the effects of these profiles on in-falling test particles will be sub-leading compared to gravitational waves and hence observationally challenging to detect.

  14. Differential geometry, Palatini gravity and reduction

    SciTech Connect (OSTI)

    Capriotti, S.

    2014-01-15

    The present article deals with a formulation of the so called (vacuum) Palatini gravity as a general variational principle. In order to accomplish this goal, some geometrical tools related to the geometry of the bundle of connections of the frame bundle LM are used. A generalization of Lagrange-Poincar reduction scheme to these types of variational problems allows us to relate it with the Einstein-Hilbert variational problem. Relations with some other variational problems for gravity found in the literature are discussed.

  15. Key Activities | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Key Activities Key Activities The SunShot Initiative issues competitive solicitations that fund selective research projects aimed at transforming the ways the United States generates, stores, and utilizes solar energy. The targeted strategies supported by the SunShot Initiative include activities that seek to: Shorten the amount of time needed to move promising new solar photovoltaic and concentrating solar power technologies from development to commercialization Increase efficiency, reduce

  16. Genomic definition of species

    SciTech Connect (OSTI)

    Crkvenjakov, R.; Drmanac, R.

    1991-07-01

    The subject of this paper is the definition of species based on the assumption that genome is the fundamental level for the origin and maintenance of biological diversity. For this view to be logically consistent it is necessary to assume the existence and operation of the new law which we call genome law. For this reason the genome law is included in the explanation of species phenomenon presented here even if its precise formulation and elaboration are left for the future. The intellectual underpinnings of this definition can be traced to Goldschmidt. We wish to explore some philosophical aspects of the definition of species in terms of the genome. The point of proposing the definition on these grounds is that any real advance in evolutionary theory has to be correct in both its philosophy and its science.

  17. Solution Package Scope Definition

    Office of Environmental Management (EM)

    Solution Package Scope Definition REPORT-72, Salt Waste (SP 72) Rev 1 Developed By: CCP ... A revision to this report may be required if the scope of the remediation activities ...

  18. Ground Gravity Survey At Baltazor Hot Springs Area (Isherwood...

    Open Energy Information (Open El) [EERE & EIA]

    (Fig. 2) shows a gravity low within the valley area that presumably is related to low-density Cenozoic sediments. The steep gravity gradient along the east side of the valley...

  19. Ground Gravity Survey At Neal Hot Springs Geothermal Area (Colwell...

    Open Energy Information (Open El) [EERE & EIA]

    and a nearby absolute gravity benchmark was tied in. Gravity data indicated a high density region in-between lower density regions to the east and west. The high density region...

  20. The inverse-square law and quantum gravity

    SciTech Connect (OSTI)

    Nieto, M.M.; Goldman, T.; Hughes, R.J.

    1988-01-01

    This paper briefly discusses a modification to central potential of gravity when antimatter is involved and the possible existence of quantum gravity and a fifth force of nature. 1 ref. (LSP)

  1. Zero-Gravity Centrifugal Force | GE Global Research

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    to create centrifugal force create its on gravity? Example if you were spinning a iron ball in space, just as the earth spins, does the iron ball create its on gravity? scott...

  2. Ultrasonic hydrometer. [Specific gravity of electrolyte

    DOE Patents [OSTI]

    Swoboda, C.A.

    1982-03-09

    The disclosed ultrasonic hydrometer determines the specific gravity (density) of the electrolyte of a wet battery, such as a lead-acid battery. The hydrometer utilizes a transducer that when excited emits an ultrasonic impulse that traverses through the electrolyte back and forth between spaced sonic surfaces. The transducer detects the returning impulse, and means measures the time t between the initial and returning impulses. Considering the distance d between the spaced sonic surfaces and the measured time t, the sonic velocity V is calculated with the equation V = 2d/t. The hydrometer also utilizes a thermocouple to measure the electrolyte temperature. A hydrometer database correlates three variable parameters including sonic velocity in and temperature and specific gravity of the electrolyte, for temperature values between 0 and 40/sup 0/C and for specific gravity values between 1.05 and 1.30. Upon knowing two parameters (the calculated sonic velocity and the measured temperature), the third parameter (specific gravity) can be uniquely found in the database. The hydrometer utilizes a microprocessor for data storage and manipulation.

  3. Thermodynamics of rotating charged black branes in third order lovelock gravity and the counterterm method

    SciTech Connect (OSTI)

    Dehghani, M.H.; Mann, R.B.

    2006-05-15

    We generalize the quasilocal definition of the stress-energy tensor of Einstein gravity to the case of third order Lovelock gravity, by introducing the surface terms that make the action well-defined. We also introduce the boundary counterterm that removes the divergences of the action and the conserved quantities of the solutions of third order Lovelock gravity with zero curvature boundary at constant t and r. Then, we compute the charged rotating solutions of this theory in n+1 dimensions with a complete set of allowed rotation parameters. These charged rotating solutions present black hole solutions with two inner and outer event horizons, extreme black holes or naked singularities provided the parameters of the solutions are suitably chosen. We compute temperature, entropy, charge, electric potential, mass and angular momenta of the black hole solutions, and find that these quantities satisfy the first law of thermodynamics. We find a Smarr-type formula and perform a stability analysis by computing the heat capacity and the determinant of Hessian matrix of mass with respect to its thermodynamic variables in both the canonical and the grand-canonical ensembles, and show that the system is thermally stable. This is commensurate with the fact that there is no Hawking-Page phase transition for black objects with zero curvature horizon.

  4. Key China Energy Statistics 2011

    SciTech Connect (OSTI)

    Levine, Mark; Fridley, David; Lu, Hongyou; Fino-Chen, Cecilia

    2012-01-15

    The China Energy Group at Lawrence Berkeley National Laboratory (LBNL) was established in 1988. Over the years the Group has gained recognition as an authoritative source of China energy statistics through the publication of its China Energy Databook (CED). In 2008 the Group published the Seventh Edition of the CED (http://china.lbl.gov/research/chinaenergy-databook). This handbook summarizes key statistics from the CED and is expressly modeled on the International Energy Agency’s “Key World Energy Statistics” series of publications. The handbook contains timely, clearly-presented data on the supply, transformation, and consumption of all major energy sources.

  5. Key China Energy Statistics 2012

    SciTech Connect (OSTI)

    Levine, Mark; Fridley, David; Lu, Hongyou; Fino-Chen, Cecilia

    2012-05-01

    The China Energy Group at Lawrence Berkeley National Laboratory (LBNL) was established in 1988. Over the years the Group has gained recognition as an authoritative source of China energy statistics through the publication of its China Energy Databook (CED). The Group has published seven editions to date of the CED (http://china.lbl.gov/research/chinaenergy-databook). This handbook summarizes key statistics from the CED and is expressly modeled on the International Energy Agency’s “Key World Energy Statistics” series of publications. The handbook contains timely, clearly-presented data on the supply, transformation, and consumption of all major energy sources.

  6. Diversity & Flexibility Key to Sustainability | Department of...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Diversity & Flexibility Key to Sustainability Diversity & Flexibility Key to Sustainability Plenary V: Biofuels and Sustainability: Acknowledging Challenges and Confronting ...

  7. Dark Matter and a Definite Non-Definite

    Energy.gov [DOE]

    The Alpha Magnetic Spectrometer experiment, a particle detector located aboard the International Space Station and funded in part by the Energy Department, recently reported a potential signal, a definite non-definite, of mysterious dark matter.

  8. FOIA Frequently Requested Documents: Definitized Subcontract...

    Office of Environmental Management (EM)

    Definitized Subcontract No. ZDO-2-30628-09 FOIA Frequently Requested Documents: Definitized Subcontract No. ZDO-2-30628-09 FOIA Frequently Requested Documents: Definitized ...

  9. Junction conditions in extended Teleparallel gravities

    SciTech Connect (OSTI)

    De la Cruz-Dombriz, lvaro; Dunsby, Peter K.S.; Sez-Gmez, Diego E-mail: peter.dunsby@uct.ac.za

    2014-12-01

    In the context of extended Teleparallel gravity theories, we address the issue of junction conditions required to guarantee the correct matching of different regions of spacetime. In the absence of shells/branes, these conditions turn out to be more restrictive than their counterparts in General Relativity as in other extended theories of gravity. In fact, the general junction conditions on the matching hypersurfaces depend on the underlying theory and a new condition on the induced tetrads in order to avoid delta-like distributions in the field equations. This result imposes strict consequences on the viability of standard solutions such as the Einstein-Straus-like construction. We find that the continuity of the scalar torsion is required in order to recover the usual General Relativity results.

  10. NREL: Energy Analysis - Key Activities

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Key Activities NREL conducts a broad range of energy analysis in support of the laboratory's programs and initiatives, DOE's Office of Energy Efficiency and Renewable Energy (EERE), technology transfer, and the greater energy analysis community. NREL's recent analysis activities include: Analysis of Project Finance Electric Sector Integration Energy-Water Nexus Life Cycle Assessment Harmonization Manufacturing Analysis Resource Assessment POWER-UP Study North American Renewable Integration Study

  11. Twisted covariant noncommutative self-dual gravity

    SciTech Connect (OSTI)

    Estrada-Jimenez, S.; Garcia-Compean, H.; Obregon, O.; Ramirez, C.

    2008-12-15

    A twisted covariant formulation of noncommutative self-dual gravity is presented. The formulation for constructing twisted noncommutative Yang-Mills theories is used. It is shown that the noncommutative torsion is solved at any order of the {theta} expansion in terms of the tetrad and some extra fields of the theory. In the process the first order expansion in {theta} for the Plebanski action is explicitly obtained.

  12. Regulation of flexible arms under gravity

    SciTech Connect (OSTI)

    De Luca, A.; Siciliano, B.

    1993-08-01

    A simple controller is presented for the regulation problem of robot arms with flexible links under gravity. It consists of a joint PD feedback plus a constant feedforward. Global asymptotic stability of the reference equilibrium state is shown under a structural assumption about link elasticity and a mild condition on the proportional gain. The result holds also in the absence of internal damping of the flexible arm. A numerical case study is presented.

  13. Gravity controlled anti-reverse rotation device

    DOE Patents [OSTI]

    Dickinson, Robert J.; Wetherill, Todd M.

    1983-01-01

    A gravity assisted anti-reverse rotation device for preventing reverse rotation of pumps and the like. A horizontally mounted pawl is disposed to mesh with a fixed ratchet preventing reverse rotation when the pawl is advanced into intercourse with the ratchet by a vertically mounted lever having a lumped mass. Gravitation action on the lumped mass urges the pawl into mesh with the ratchet, while centrifugal force on the lumped mass during forward, allowed rotation retracts the pawl away from the ratchet.

  14. Neutron stars as laboratories for gravity physics

    SciTech Connect (OSTI)

    Deliduman, Cemsinan

    2014-01-01

    We study the structure of neutron stars in R+?R gravity model with perturbative method. We obtain mass-radius relations for four representative equations of state (EoS). We find that, for |?|~10? cm, the results differ substantially from the results of general relativity. The effects of modified gravity are seen as mimicking a stiff or soft EoS for neutron stars depending upon whether ? is negative or positive, respectively. Some of the soft EoS that are excluded within the framework of general relativity can be reconciled for certain values of ? of this order with the 2 solar mass neutron star recently observed. Indeed, if the EoS is ever established to be soft, modified gravity of the sort studied here may be required to explain neutron star masses as large as 2 M{sub ?}. The associated length scale ?(?)~10? cm is of the order of the the typical radius of neutron stars implying that this is the smallest value we could find by using neutron stars as a probe. We thus conclude that the true value of ? is most likely much smaller than 10? cm.

  15. Cosmology in general massive gravity theories

    SciTech Connect (OSTI)

    Comelli, D.; Nesti, F.; Pilo, L. E-mail: fabrizio.nesti@aquila.infn.it

    2014-05-01

    We study the cosmological FRW flat solutions generated in general massive gravity theories. Such a model are obtained adding to the Einstein General Relativity action a peculiar non derivative potentials, function of the metric components, that induce the propagation of five gravitational degrees of freedom. This large class of theories includes both the case with a residual Lorentz invariance as well as the case with rotational invariance only. It turns out that the Lorentz-breaking case is selected as the only possibility. Moreover it turns out that that perturbations around strict Minkowski or dS space are strongly coupled. The upshot is that even though dark energy can be simply accounted by massive gravity modifications, its equation of state w{sub eff} has to deviate from -1. Indeed, there is an explicit relation between the strong coupling scale of perturbations and the deviation of w{sub eff} from -1. Taking into account current limits on w{sub eff} and submillimiter tests of the Newton's law as a limit on the possible strong coupling scale, we find that it is still possible to have a weakly coupled theory in a quasi dS background. Future experimental improvements on short distance tests of the Newton's law may be used to tighten the deviation of w{sub eff} form -1 in a weakly coupled massive gravity theory.

  16. Project Definition Rating Index Workbook

    Energy.gov [DOE]

    The Project Definition Rating Index (PDRI) Workbook is a tool that was developed to support DOE G-413.3-12A, U. S. Department of Energy Project Definition Rating Index Guide for Traditional Nuclear...

  17. Keys to improving environmental performance

    SciTech Connect (OSTI)

    Moreau, R.L.; Raught, D.L.

    1996-11-01

    Environmental protection is a mainstream issue in today`s society. Both internal and external drivers motivate the oil and ms industry to continuously improve environmental performance. Companies are integrating environmental considerations into their business plans to a greater extent, and are directing proportionally more resources toward managing these issues. This paper addresses several environmental management focus areas in Exxon`s domestic E&P sector to: (1) manage risks, (2) ensure compliance, (3) improve performance, and (4) assist in the development of balanced legislation and regulations. Specific examples of Production Department programs are discussed, along with keys to success for continued progress in improving performance.

  18. Public/private key certification authority and key distribution. Draft

    SciTech Connect (OSTI)

    Long, J.P.; Christensen, M.J.; Sturtevant, A.P.; Johnston, W.E.

    1995-09-25

    Traditional encryption, which protects messages from prying eyes, has been used for many decades. The present concepts of encryption are built from that heritage. Utilization of modern software-based encryption techniques implies much more than simply converting files to an unreadable form. Ubiquitous use of computers and advances in encryption technology coupled with the use of wide-area networking completely changed the reasons for utilizing encryption technology. The technology demands a new and extensive infrastructure to support these functions. Full understanding of these functions, their utility and value, and the need for an infrastructure, takes extensive exposure to the new paradigm. This paper addresses issues surrounding the establishment and operation of a key management system (i.e., certification authority) that is essential to the successful implementation and wide-spread use of encryption.

  19. Key Opportunities and Challenges for Program Sustainability ...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Key Opportunities and Challenges for Program Sustainability Key Opportunities and Challenges for Program Sustainability Better Buildings Neighborhood Program, Peer Exchange Call: ...

  20. Brain Receptor Structures Key to Future Therapeutics

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Brain Receptor Structures Key to Future Therapeutics Brain Receptor Structures Key to Future Therapeutics Print Wednesday, 28 January 2015 00:00 With an aging population in ...

  1. Soot Nanostructure: Definition, Quantification, and Implications...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Soot Nanostructure: Definition, Quantification, and Implications Soot Nanostructure: Definition, Quantification, and Implications 2004 Diesel Engine Emissions Reduction (DEER) ...

  2. Biomass Scenario Model Scenario Library: Definitions, Construction...

    Office of Scientific and Technical Information (OSTI)

    Definitions, Construction, and Description Citation Details In-Document Search Title: Biomass Scenario Model Scenario Library: Definitions, Construction, and Description ...

  3. Notes and Definitions

    Weekly Natural Gas Storage Report

    Notes and Definitions This report tracks U.S. natural gas inventories held in underground storage facilities. The weekly stocks generally are the volumes of working gas as of the report date. The "net change" in reported stock levels reflects all events affecting working gas in storage, including injections, withdrawals, and reclassifications between base and working gas. The "implied flow" estimate represents movements of working natural gas into or out of underground

  4. Gravity Survey of the Carson Sink - Data and Maps

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Faulds, James E.

    2013-12-31

    A detailed gravity survey was carried out for the entire Carson Sink in western Nevada (Figure 1) through a subcontract to Zonge Engineering, Inc. The Carson Sink is a large composite basin containing three known, blind high‐temperature geothermal systems (Fallon Airbase, Stillwater, and Soda Lake). This area was chosen for a detailed gravity survey in order to characterize the gravity signature of the known geothermal systems and to identify other potential blind systems based on the structural setting indicated by the gravity data. Data: Data were acquired at approximately 400, 800, and 1600 meter intervals for a total of 1,243 stations. The project location and station location points are presented in Figure 14. The station distribution for this survey was designed to complete regional gravity coverage in the Carson Sink area without duplication of available public and private gravity coverage. Gravity data were acquired using a Scintrex CG‐5 gravimeter and a LaCoste and Romberg (L&R) Model‐G gravimeter. The CG‐5 gravity meter has a reading resolution of 0.001 milligals and a typical repeatability of less than 0.005 milligals. The L&R gravity meter has a reading resolution of 0.01 milligals and a typical repeatability of 0.02 milligals. The basic processing of gravimeter readings to calculate through to the Complete Bouguer Anomaly was made using the Gravity and Terrain Correction software version 7.1 for Oasis Montaj by Geosoft LTD. Results: The gravity survey of the Carson Sink yielded the following products. Project location and station location map (Figure 14). Complete Bouguer Anomaly @ 2.67 gm/cc reduction density. Gravity Complete Bouguer Anomaly at 2.50 g/cc Contour Map (Figure 15). Gravity Horizontal Gradient Magnitude Shaded Color Contour Map. Gravity 1st Vertical Derivative Color Contour Map. Interpreted Depth to Mesozoic Basement (Figure 16), incorporating drill‐hole intercept values. Preliminary Interpretation of Results: The Carson Sink

  5. Ground Gravity Survey At Under Steamboat Springs Area (Warpinski...

    Open Energy Information (Open El) [EERE & EIA]

    Ground Gravity Survey Activity Date Usefulness useful DOE-funding Unknown Notes Update to Warpinski, et al., 2002 References N. R. Warpinski, A. R. Sattler, R. Fortuna, D....

  6. Ground Gravity Survey At Chocolate Mountains Area (Alm, Et Al...

    Open Energy Information (Open El) [EERE & EIA]

    Chocolate Mountains Area (Alm, Et Al., 2010) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground Gravity Survey At Chocolate Mountains Area...

  7. Ground Gravity Survey At Blue Mountain Geothermal Area (Fairbank...

    Open Energy Information (Open El) [EERE & EIA]

    search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground Gravity Survey At Blue Mountain Geothermal Area (Fairbank Engineering Ltd, 2003) Exploration Activity Details...

  8. Category:Ground Gravity Survey | Open Energy Information

    Open Energy Information (Open El) [EERE & EIA]

    Apps Datasets Community Login | Sign Up Search Category Edit History Category:Ground Gravity Survey Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home...

  9. Lorentz Invariant phenomenological model of quantum gravity: A minimalistic presentation

    SciTech Connect (OSTI)

    Bonder, Yuri

    2012-08-24

    The purpose of this paper is to give a minimalistic and self-contained presentation of a Lorentz Invariant phenomenological model of Quantum Gravity.

  10. Ground Gravity Survey At Rio Grande Rift Region (Aiken & Ander...

    Open Energy Information (Open El) [EERE & EIA]

    DOE-funding Unknown References Carlos L.V. Aiken, Mark E. Ander (1981) A Regional Strategy For Geothermal Exploration With Emphasis On Gravity And Magnetotellurics Additional...

  11. Ground Gravity Survey At Walker Lake Valley Area (Shoffner, Et...

    Open Energy Information (Open El) [EERE & EIA]

    N. Hinz, A. Sabin, M. Lazaro, S. Alm (2010) Understanding Fault Characteristics And Sediment Depth For Geothermal Exploration Using 3D Gravity Inversion In Walker Valley, Nevada...

  12. Ground Gravity Survey At Newberry Caldera Area (DOE GTP) | Open...

    Open Energy Information (Open El) [EERE & EIA]

    Newberry Caldera Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground Gravity Survey At Newberry Caldera Area (DOE GTP)...

  13. Three-dimensional gravity modeling and focusing inversion using...

    Office of Scientific and Technical Information (OSTI)

    Using synthetic data from models of varying complexity and a field data set, it is demonstrated that, given an adequate depth weighting function, the gravity inversion in the ...

  14. A gravity model for the Coso geothermal area, California | Open...

    Open Energy Information (Open El) [EERE & EIA]

    Most of the gravity variations can be explained by two lithologic units: (1) low density wedges of Quarternary alluvium with interbedded thin basalts (2.4 gcmsup 3)...

  15. Ground Gravity Survey At Kilauea East Rift Geothermal Area (Leslie...

    Open Energy Information (Open El) [EERE & EIA]

    of the seaward extension of the ERZ. Gravity measurements of Puna Ridge show a high density anomaly at depth which corresponds to high velocity data obtained from seismic...

  16. Ground Gravity Survey (Nannini, 1986) | Open Energy Information

    Open Energy Information (Open El) [EERE & EIA]

    depth inside the sedimentary formations of the basement and often present a negative density contrast when compared to the latter. Gravity could help to identify these bodies by...

  17. Bouguer gravity anomalies, depth to bedrock, and shallow temperature...

    Open Energy Information (Open El) [EERE & EIA]

    Bouguer gravity anomalies, depth to bedrock, and shallow temperature in the Humboldt House geothermal area, Pershing County, Nevada Jump to: navigation, search OpenEI Reference...

  18. Ground Gravity Survey At Raft River Geothermal Area (1978) |...

    Open Energy Information (Open El) [EERE & EIA]

    search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground Gravity Survey At Raft River Geothermal Area (1978) Exploration Activity Details Location Raft River...

  19. Ground Gravity Survey At Coso Geothermal Area (1990) | Open Energy...

    Open Energy Information (Open El) [EERE & EIA]

    (1990) Exploration Activity Details Location Coso Geothermal Area Exploration Technique Ground Gravity Survey Activity Date 1990 Usefulness not indicated DOE-funding Unknown...

  20. Ground Gravity Survey At Truckhaven Area (Warpinski, Et Al.,...

    Open Energy Information (Open El) [EERE & EIA]

    2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground Gravity Survey At Truckhaven Area (Warpinski, Et Al., 2004) Exploration Activity...

  1. Ground Gravity Survey At Lake City Hot Springs Area (Warpinski...

    Open Energy Information (Open El) [EERE & EIA]

    Exploration Activity Details Location Lake City Hot Springs Area Exploration Technique Ground Gravity Survey Activity Date Usefulness not indicated DOE-funding Unknown Notes The...

  2. Ground Gravity Survey At San Francisco Volcanic Field Area (Warpinski...

    Open Energy Information (Open El) [EERE & EIA]

    Francisco Volcanic Field Area (Warpinski, Et Al., 2004) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground Gravity Survey At San Francisco...

  3. Ground Gravity Survey At Mcgee Mountain Area (DOE GTP) | Open...

    Open Energy Information (Open El) [EERE & EIA]

    Mcgee Mountain Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground Gravity Survey At Mcgee Mountain Area (DOE GTP) Exploration...

  4. Ground Gravity Survey At Under Steamboat Springs Area (Warpinski...

    Open Energy Information (Open El) [EERE & EIA]

    Finally, the gravity survey also shows anomalies that correlate with the seismic and microseismic data. All of these results will be integrated to obtain the most probable...

  5. Ground Gravity Survey At Lightning Dock Geothermal Area (Swanberg...

    Open Energy Information (Open El) [EERE & EIA]

    Basis Examination of geothermal resources of New Mexico Notes detailed gravity and magnetics survey of Lightning Dock to identify burried structures as a source of the thermal...

  6. Ground Gravity Survey At Roosevelt Hot Springs Geothermal Area...

    Open Energy Information (Open El) [EERE & EIA]

    Unknown Exploration Basis Faulder 1991 Conceptual Geological Model compilation and literature review of the Roosevelt Hot Springs Geothermal Area. Notes Gravity modeling and...

  7. Perturbations of nested branes with induced gravity

    SciTech Connect (OSTI)

    Sbis, Fulvio; Koyama, Kazuya E-mail: kazuya.koyama@port.ac.uk

    2014-06-01

    We study the behaviour of weak gravitational fields in models where a 4D brane is embedded inside a 5D brane equipped with induced gravity, which in turn is embedded in a 6D spacetime. We consider a specific regularization of the branes internal structures where the 5D brane can be considered thin with respect to the 4D one. We find exact solutions corresponding to pure tension source configurations on the thick 4D brane, and study perturbations at first order around these background solutions. To perform the perturbative analysis, we adopt a bulk-based approach and we express the equations in terms of gauge invariant and master variables using a 4D scalar-vector-tensor decomposition. We then propose an ansatz on the behaviour of the perturbation fields when the thickness of the 4D brane goes to zero, which corresponds to configurations where gravity remains finite everywhere in the thin limit of the 4D brane. We study the equations of motion using this ansatz, and show that they give rise to a consistent set of differential equations in the thin limit, from which the details of the internal structure of the 4D brane disappear. We conclude that the thin limit of the ''ribbon'' 4D brane inside the (already thin) 5D brane is well defined (at least when considering first order perturbations around pure tension configurations), and that the gravitational field on the 4D brane remains finite in the thin limit. We comment on the crucial role of the induced gravity term on the 5D brane.

  8. Testing chameleon gravity with the Coma cluster

    SciTech Connect (OSTI)

    Terukina, Ayumu; Yamamoto, Kazuhiro; Lombriser, Lucas; Bacon, David; Koyama, Kazuya; Nichol, Robert C. E-mail: lucas.lombriser@port.ac.uk E-mail: david.bacon@port.ac.uk E-mail: bob.nichol@port.ac.uk

    2014-04-01

    We propose a novel method to test the gravitational interactions in the outskirts of galaxy clusters. When gravity is modified, this is typically accompanied by the introduction of an additional scalar degree of freedom, which mediates an attractive fifth force. The presence of an extra gravitational coupling, however, is tightly constrained by local measurements. In chameleon modifications of gravity, local tests can be evaded by employing a screening mechanism that suppresses the fifth force in dense environments. While the chameleon field may be screened in the interior of the cluster, its outer region can still be affected by the extra force, introducing a deviation between the hydrostatic and lensing mass of the cluster. Thus, the chameleon modification can be tested by combining the gas and lensing measurements of the cluster. We demonstrate the operability of our method with the Coma cluster, for which both a lensing measurement and gas observations from the X-ray surface brightness, the X-ray temperature, and the Sunyaev-Zel'dovich effect are available. Using the joint observational data set, we perform a Markov chain Monte Carlo analysis of the parameter space describing the different profiles in both the Newtonian and chameleon scenarios. We report competitive constraints on the chameleon field amplitude and its coupling strength to matter. In the case of f(R) gravity, corresponding to a specific choice of the coupling, we find an upper bound on the background field amplitude of |f{sub R0}| < 6 10{sup ?5}, which is currently the tightest constraint on cosmological scales.

  9. Ostrogradski Hamiltonian approach for geodetic brane gravity

    SciTech Connect (OSTI)

    Cordero, Ruben; Molgado, Alberto

    2010-12-07

    We present an alternative Hamiltonian description of a branelike universe immersed in a flat background spacetime. This model is named geodetic brane gravity. We set up the Regge-Teitelboim model to describe our Universe where such field theory is originally thought as a second order derivative theory. We refer to an Ostrogradski Hamiltonian formalism to prepare the system to its quantization. This approach comprize the manage of both first- and second-class constraints and the counting of degrees of freedom follows accordingly.

  10. A new quasidilaton theory of massive gravity

    SciTech Connect (OSTI)

    Mukohyama, Shinji

    2014-12-01

    We present a new quasidilaton theory of Poincare invariant massive gravity, based on the recently proposed framework of matter coupling that makes it possible for the kinetic energy of the quasidilaton scalar to couple to both physical and fiducial metrics simultaneously. We find a scaling-type exact solution that expresses a self-accelerating de Sitter universe, and then analyze linear perturbations around it. It is shown that in a range of parameters all physical degrees of freedom have non-vanishing quadratic kinetic terms and are stable in the subhorizon limit, while the effective Newton's constant for the background is kept positive.

  11. A high frequency resonance gravity gradiometer

    SciTech Connect (OSTI)

    Bagaev, S. N.; Kvashnin, N. L.; Skvortsov, M. N.; Bezrukov, L. B.; Krysanov, V. A.; Oreshkin, S. I.; Motylev, A. M.; Popov, S. M.; Samoilenko, A. A.; Yudin, I. S.; Rudenko, V. N.

    2014-06-15

    A new setup OGRANthe large scale opto-acoustical gravitational detector is described. As distinguished from known gravitational bar detectors it uses the optical interferometrical readout for registering weak variations of gravity gradient at the kilohetz frequency region. At room temperature, its sensitivity is limited only by the bar Brownian noise at the bandwidth close to 100 Hz. It is destined for a search for rare eventsgravitational pulses coincident with signals of neutrino scintillator (BUST) in the deep underground of Baksan Neutrino Observatory of INR RAS.

  12. Coordinate time dependence in quantum gravity

    SciTech Connect (OSTI)

    Bojowald, Martin; Singh, Parampreet; Skirzewski, Aureliano

    2004-12-15

    The intuitive classical space-time picture breaks down in quantum gravity, which makes a comparison and the development of semiclassical techniques quite complicated. Using ingredients of the group averaging method to solve constraints one can nevertheless introduce a classical coordinate time into the quantum theory, and use it to investigate the way a semiclassical continuous description emerges from discrete quantum evolution. Applying this technique to test effective classical equations of loop cosmology and their implications for inflation and bounces, we show that the effective semiclassical theory is in good agreement with the quantum description even at short scales.

  13. Low gravity fluid-thermal experiments

    SciTech Connect (OSTI)

    Krotiuk, W.J.; Cuta, J.M.

    1987-06-01

    Pacific Northwest Laboratory (PNL) is the lead laboratory for the thermal-hydraulic research in the US Department of Energy Multimegawatt Space Nuclear Power Program. PNL must provide the tools necessary to analyze proposed space reactor concepts, which include single- and two-phase alkali metal and gas-cooled designs. PNL has divided its activities for this task into three basic areas: computer code development, thermal-hydraulic modeling, and experimentation. The subject of this paper is the low-gravity experimental program currently underway at PNL in support of the MMW Program.

  14. Dualities of 3D dilaton gravity

    SciTech Connect (OSTI)

    Cadoni, M. |

    1996-12-01

    We investigate Brans-Dicke dilaton gravity theories in 2+1 dimensions. We show that the reduced field equations for solutions with a diagonal metric and depending only on one spacetime coordinate have a continuous O(2) symmetry. Using this symmetry we derive general static and cosmological solutions of the theory. The action of the discrete group O(2,{bold Z}) on the space of the solutions is discussed. Three-dimensional string effective theory and three-dimensional general relativity are discussed in detail. In particular, we find that the previously discovered black string solution is dual to a spacetime with a conical singularity. {copyright} {ital 1996 The American Physical Society.}

  15. Massive gravity on de Sitter and unique candidate for partially massless gravity

    SciTech Connect (OSTI)

    Rham, Claudia de; Renaux-Petel, Sbastien E-mail: srenaux@lpthe.jussieu.fr

    2013-01-01

    We derive the decoupling limit of Massive Gravity on de Sitter in an arbitrary number of space-time dimensions d. By embedding d-dimensional de Sitter into d+1-dimensional Minkowski, we extract the physical helicity-1 and helicity-0 polarizations of the graviton. The resulting decoupling theory is similar to that obtained around Minkowski. We take great care at exploring the partially massless limit and define the unique fully non-linear candidate theory that is free of the helicity-0 mode in the decoupling limit, and which therefore propagates only four degrees of freedom in four dimensions. In the latter situation, we show that a new Vainshtein mechanism is at work in the limit m{sup 2} ? 2H{sup 2} which decouples the helicity-0 mode when the parameters are different from that of partially massless gravity. As a result, there is no discontinuity between massive gravity and its partially massless limit, just in the same way as there is no discontinuity in the massless limit of massive gravity. The usual bounds on the graviton mass could therefore equivalently well be interpreted as bounds on m{sup 2}?2H{sup 2}. When dealing with the exact partially massless parameters, on the other hand, the symmetry at m{sup 2} = 2H{sup 2} imposes a specific constraint on matter. As a result the helicity-0 mode decouples without even the need of any Vainshtein mechanism.

  16. Inertia-gravity wave radiation from the merging of two co-rotating vortices in the f-plane shallow water system

    SciTech Connect (OSTI)

    Sugimoto, Norihiko

    2015-12-15

    Inertia-gravity wave radiation from the merging of two co-rotating vortices is investigated numerically in a rotating shallow water system in order to focus on cyclone–anticyclone asymmetry at different values of the Rossby number (Ro). A numerical study is conducted on a model using a spectral method in an unbounded domain to estimate the gravity wave flux with high accuracy. Continuous gravity wave radiation is observed in three stages of vortical flows: co-rotating of the vortices, merging of the vortices, and unsteady motion of the merged vortex. A cyclone–anticyclone asymmetry appears at all stages at smaller Ro (≤20). Gravity waves from anticyclones are always larger than those from cyclones and have a local maximum at smaller Ro (∼2) compared with that for an idealized case of a co-rotating vortex pair with a constant rotation rate. The source originating in the Coriolis acceleration has a key role in cyclone–anticyclone asymmetry in gravity waves. An additional important factor is that at later stages, the merged axisymmetric anticyclone rotates faster than the elliptical cyclone due to the effect of the Rossby deformation radius, since a rotation rate higher than the inertial cutoff frequency is required to radiate gravity waves.

  17. Bioenergy Key Publications | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Key Publications Bioenergy Key Publications This overview highlights key publications issued by the U.S. Department of Energy's Bioenergy Technologies Office. bioenergy_key_publications.pdf (333.56 KB) More Documents & Publications 2013 Peer Review Presentations-Plenaries Technology Pathway Selection Effort 2015 Peer Review Presentations-Plenaries

  18. Answering Key Fuel Cycle Questions

    SciTech Connect (OSTI)

    Steven J. Piet; Brent W. Dixon; J. Stephen Herring; David E. Shropshire; Mary Lou Dunzik-Gougar

    2003-10-01

    The Advanced Fuel Cycle Initiative (AFCI) program has both “outcome” and “process” goals because it must address both waste already accumulating as well as completing the fuel cycle in connection with advanced nuclear power plant concepts. The outcome objectives are waste geological repository capacity and cost, energy security and sustainability, proliferation resistance, fuel cycle economics, and safety. The process objectives are readiness to proceed and adaptability and robustness in the face of uncertainties. A classic decision-making approach to such a multi-attribute problem would be to weight individual quantified criteria and calculate an overall figure of merit. This is inappropriate for several reasons. First, the goals are not independent. Second, the importance of different goals varies among stakeholders. Third, the importance of different goals is likely to vary with time, especially the “energy future.” Fourth, some key considerations are not easily or meaningfully quantifiable at present. Instead, at this point, we have developed 16 questions the AFCI program should answer and suggest an approach of determining for each whether relevant options improve meeting each of the program goals. We find that it is not always clear which option is best for a specific question and specific goal; this helps identify key issues for future work. In general, we suggest attempting to create as many win-win decisions (options that are attractive or neutral to most goals) as possible. Thus, to help clarify why the program is exploring the options it is, and to set the stage for future narrowing of options, we have developed 16 questions, as follows: · What are the AFCI program goals? · Which potential waste disposition approaches do we plan for? · What are the major separations, transmutation, and fuel options? · How do we address proliferation resistance? · Which potential energy futures do we plan for? · What potential external triggers do we

  19. f(T,T) gravity and cosmology

    SciTech Connect (OSTI)

    Harko, Tiberiu; Lobo, Francisco S.N.; Otalora, G.; Saridakis, Emmanuel N. E-mail: flobo@cii.fc.ul.pt

    2014-12-01

    We present an extension of f(T) gravity, allowing for a general coupling of the torsion scalar T with the trace of the matter energy-momentum tensor T. The resulting f(T,T) theory is a new modified gravity, since it is different from all the existing torsion or curvature based constructions. Applied to a cosmological framework, it leads to interesting phenomenology. In particular, one can obtain a unified description of the initial inflationary phase, the subsequent non-accelerating, matter-dominated expansion, and then the transition to a late-time accelerating phase. Additionally, the effective dark energy sector can be quintessence or phantom-like, or exhibit the phantom-divide crossing during the evolution. Moreover, in the far future the universe results either to a de Sitter exponential expansion, or to eternal power-law accelerated expansions. Finally, a detailed study of the scalar perturbations at the linear level reveals that f(T,T) cosmology can be free of ghosts and instabilities for a wide class of ansatzes and model parameters.

  20. A dynamical inconsistency of Horava gravity

    SciTech Connect (OSTI)

    Henneaux, Marc; Kleinschmidt, Axel; Lucena Gomez, Gustavo

    2010-03-15

    The dynamical consistency of the nonprojectable version of Horava gravity is investigated by focusing on the asymptotically flat case. It is argued that for generic solutions of the constraint equations the lapse must vanish asymptotically. We then consider particular values of the coupling constants for which the equations are tractable and in that case we prove that the lapse must vanish everywhere--and not only at infinity. Put differently, the Hamiltonian constraints are generically all second-class. We then argue that the same feature holds for generic values of the couplings, thus revealing a physical inconsistency of the theory. In order to cure this pathology, one might want to introduce further constraints but the resulting theory would then lose much of the appeal of the original proposal by Horava. We also show that there is no contradiction with the time-reparametrization invariance of the action, as this invariance is shown to be a so-called 'trivial gauge symmetry' in Horava gravity, hence with no associated first-class constraints.

  1. Drawdown behavior of gravity drainage wells

    SciTech Connect (OSTI)

    Aasen, J.A.; Ramey, H.J. Jr.

    1993-10-01

    An analytical solution for drawdown in gravity drainage wells is developed. The free-surface flow is viewed as incompressible, and anisotropy effects are included. The well is a line source well, and the reservoir is infinitely large. The model is valid for small drawdowns. The uniform wellbore potential inner boundary condition is modelled using the proper Green`s function. The discontinuity at the wellbore is solved by introducing a finite skin radius, and the formulation produces a seepage face. The calculated wellbore flux distribution and wellbore pressures are in fair agreement with results obtained using a numerical gravity drainage simulator. Three distinct flow periods are observed. The wellbore storage period is caused by the moving liquid level, and the duration is short. During the long intermediate flow period, the wellbore pressure is nearly constant. In this period the free surface moves downwards, and the liquid is produced mainly by vertical drainage. At long times the semilog straight line appears. The confined liquid solutions by Theis (1935) and van Everdingen and Hurst (1949) may be used during the pseudoradial flow period if the flowrate is low. New type curves are presented that yield both vertical and horizontal permeabilities.

  2. Vacuum energy in Einstein-Gauss-Bonnet anti-de Sitter gravity

    SciTech Connect (OSTI)

    Kofinas, Georgios; Olea, Rodrigo

    2006-10-15

    A finite action principle for Einstein-Gauss-Bonnet anti-de Sitter gravity is achieved by supplementing the bulk Lagrangian by a suitable boundary term, whose form substantially differs in odd and even dimensions. For even dimensions, this term is given by the boundary contribution in the Euler theorem with a coupling constant fixed, demanding the spacetime to have constant (negative) curvature in the asymptotic region. For odd dimensions, the action is stationary under a boundary condition on the variation of the extrinsic curvature. A well-posed variational principle leads to an appropriate definition of energy and other conserved quantities using the Noether theorem, and to a correct description of black hole thermodynamics. In particular, this procedure assigns a nonzero energy to anti-de Sitter spacetime in all odd dimensions.

  3. Disformal transformations, veiled General Relativity and Mimetic Gravity

    SciTech Connect (OSTI)

    Deruelle, Nathalie; Rua, Josephine E-mail: rua@cbpf.br

    2014-09-01

    In this Note we show that Einstein's equations for gravity are generically invariant under ''disformations''. We also show that the particular subclass when this is not true yields the equations of motion of ''Mimetic Gravity''. Finally we give the ''mimetic'' generalization of the Schwarzschild solution.

  4. Bimetric gravity doubly coupled to matter: theory and cosmological implications

    SciTech Connect (OSTI)

    Akrami, Yashar; Koivisto, Tomi S.; Mota, David F.; Sandstad, Marit E-mail: t.s.koivisto@astro.uio.no E-mail: marit.sandstad@astro.uio.no

    2013-10-01

    A ghost-free theory of gravity with two dynamical metrics both coupled to matter is shown to be consistent and viable. Its cosmological implications are studied, and the models, in particular in the context of partially massless gravity, are found to explain the cosmic acceleration without resorting to dark energy.

  5. Two-phase alkali-metal experiments in reduced gravity

    SciTech Connect (OSTI)

    Antoniak, Z.I.

    1986-06-01

    Future space missions envision the use of large nuclear reactors utilizing either a single or a two-phase alkali-metal working fluid. The design and analysis of such reactors require state-of-the-art computer codes that can properly treat alkali-metal flow and heat transfer in a reduced-gravity environment. A literature search of relevant experiments in reduced gravity is reported on here, and reveals a paucity of data for such correlations. The few ongoing experiments in reduced gravity are noted. General plans are put forth for the reduced-gravity experiments which will have to be performed, at NASA facilities, with benign fluids. A similar situation exists regarding two-phase alkali-metal flow and heat transfer, even in normal gravity. Existing data are conflicting and indequate for the task of modeling a space reactor using a two-phase alkali-metal coolant. The major features of past experiments are described here. Data from the reduced-gravity experiments with innocuous fluids are to be combined with normal gravity data from the two-phase alkali-metal experiments. Analyses undertaken here give every expectation that the correlations developed from this data base will provide a valid representation of alkali-metal heat transfer and pressure drop in reduced gravity.

  6. Radiative observables for linearized gravity on asymptotically flat spacetimes and their boundary induced states

    SciTech Connect (OSTI)

    Benini, Marco Dappiaggi, Claudio; Murro, Simone

    2014-08-01

    We discuss the quantization of linearized gravity on globally hyperbolic, asymptotically flat, vacuum spacetimes, and the construction of distinguished states which are both of Hadamard form and invariant under the action of all bulk isometries. The procedure, we follow, consists of looking for a realization of the observables of the theory as a sub-algebra of an auxiliary, non-dynamical algebra constructed on future null infinity ??. The applicability of this scheme is tantamount to proving that a solution of the equations of motion for linearized gravity can be extended smoothly to ??. This has been claimed to be possible provided that a suitable gauge fixing condition, first written by Geroch and Xanthopoulos [Asymptotic simplicity is stable, J. Math. Phys. 19, 714 (1978)], is imposed. We review its definition critically, showing that there exists a previously unnoticed obstruction in its implementation leading us to introducing the concept of radiative observables. These constitute an algebra for which a Hadamard state induced from null infinity and invariant under the action of all spacetime isometries exists and it is explicitly constructed.

  7. Massive gravitational waves in Chern-Simons modified gravity

    SciTech Connect (OSTI)

    Myung, Yun Soo; Moon, Taeyoon E-mail: tymoon@inje.ac.kr

    2014-10-01

    We consider the nondynamical Chern-Simons (nCS) modified gravity, which is regarded as a parity-odd theory of massive gravity in four dimensions. We first find polarization modes of gravitational waves for θ=x/μ in nCS modified gravity by using the Newman-Penrose formalism where the null complex tetrad is necessary to specify gravitational waves. We show that in the Newman–Penrose formalism, the number of polarization modes is one in addition to an unspecified Ψ{sub 4}, implying three degrees of freedom for θ=x/μ. This compares with two for a canonical embedding of θ=t/μ. Also, if one introduces the Ricci tensor formalism to describe a massive graviton arising from the nCS modified gravity, one finds one massive mode after making second-order wave equations, which is compared to five found from the parity-even Einstein–Weyl gravity.

  8. Ground Gravity Survey At Glass Buttes Area (DOE GTP) | Open Energy...

    Open Energy Information (Open El) [EERE & EIA]

    Ground Gravity Survey At Glass Buttes Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground Gravity Survey At Glass Buttes Area...

  9. Ground Gravity Survey At Cove Fort Area (Warpinski, Et Al., 2002...

    Open Energy Information (Open El) [EERE & EIA]

    Ground Gravity Survey At Cove Fort Area (Warpinski, Et Al., 2002) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground Gravity Survey At Cove...

  10. Ground Gravity Survey At Hot Pot Area (DOE GTP) | Open Energy...

    Open Energy Information (Open El) [EERE & EIA]

    Ground Gravity Survey At Hot Pot Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground Gravity Survey At Hot Pot Area (DOE GTP)...

  11. Ground Gravity Survey At Fort Bliss Area (DOE GTP) | Open Energy...

    Open Energy Information (Open El) [EERE & EIA]

    Ground Gravity Survey At Fort Bliss Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground Gravity Survey At Fort Bliss Area (DOE...

  12. Ground Gravity Survey At New River Area (DOE GTP) | Open Energy...

    Open Energy Information (Open El) [EERE & EIA]

    Ground Gravity Survey At New River Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground Gravity Survey At New River Area (DOE...

  13. Oil gravity distribution in the diatomite at South Belridge Field, Kern County, CA: Implications for oil sourcing and migration

    SciTech Connect (OSTI)

    Hill, D.W.; Sande, J.J.; Doe, P.H.

    1995-04-01

    Understanding oil gravity distribution in the Belridge Diatomite has led to economic infill development and specific enhanced recovery methods for targeted oil properties. To date more than 100 wells have provided samples used to determining vertical and areal distribution of oil gravity in the field. Detailed geochemical analyses were also conducted on many of the oil samples to establish different oil types, relative maturities, and to identify transformed oils. The geochemical analysis also helped identify source rock expulsion temperatures and depositional environments. The data suggests that the Belridge diatomite has been charged by a single hydrocarbon source rock type and was generated over a relatively wide range of temperatures. Map and statistical data support two distinct oil segregation processes occurring post expulsion. Normal gravity segregation within depositional cycles of diatomite have caused lightest oils to migrate to the crests of individual cycle structures. Some data suggests a loss of the light end oils in the uppermost cycles to the Tulare Formation above, or through early biodegradation. Structural rotation post early oil expulsion has also left older, heavier oils concentrated on the east flank of the structure. With the addition of other samples from the south central San Joaquin area, we have been able to tie the Belridge diatomite hydrocarbon charge into a regional framework. We have also enhanced our ability to predict oil gravity and well primary recovery by unraveling some key components of the diatomite oil source and migration history.

  14. The Brain: Key To a Better Computer

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Brain: Key To a Better Computer - Sandia Energy Energy Search Icon Sandia Home Locations ... Twitter Google + Vimeo Newsletter Signup SlideShare The Brain: Key To a Better Computer ...

  15. Mixing lengths scaling in a gravity flow

    SciTech Connect (OSTI)

    Ecke, Robert E [Los Alamos National Laboratory; Rivera, Micheal [Los Alamos National Laboratory; Chen, Jun [Los Alamos National Laboratory; Ecke, Robert E [Los Alamos National Laboratory

    2009-01-01

    We present an experimental study of the mixing processes in a gravity current. The turbulent transport of momentum and buoyancy can be described in a very direct and compact form by a Prandtl mixing length model [1]: the turbulent vertical fluxes of momentum and buoyancy are found to scale quadraticatly with the vertical mean gradients of velocity and density. The scaling coefficient is the square of the mixing length, approximately constant over the mixing zone of the stratified shear layer. We show in this paper how, in different flow configurations, this length can be related to the shear length of the flow {radical}({var_epsilon}/{partial_derivative}{sub z}u{sup 3}).

  16. Semiclassical approximation to supersymmetric quantum gravity

    SciTech Connect (OSTI)

    Kiefer, Claus; Lueck, Tobias; Moniz, Paulo

    2005-08-15

    We develop a semiclassical approximation scheme for the constraint equations of supersymmetric canonical quantum gravity. This is achieved by a Born-Oppenheimer type of expansion, in analogy to the case of the usual Wheeler-DeWitt equation. The formalism is only consistent if the states at each order depend on the gravitino field. We recover at consecutive orders the Hamilton-Jacobi equation, the functional Schroedinger equation, and quantum gravitational correction terms to this Schroedinger equation. In particular, the following consequences are found: (i) the Hamilton-Jacobi equation and therefore the background spacetime must involve the gravitino, (ii) a (many-fingered) local time parameter has to be present on super Riem {sigma} (the space of all possible tetrad and gravitino fields) (iii) quantum supersymmetric gravitational corrections affect the evolution of the very early Universe. The physical meaning of these equations and results, in particular, the similarities to and differences from the pure bosonic case, are discussed.

  17. Testing quantum gravity via cosmogenic neutrino oscillations

    SciTech Connect (OSTI)

    Christian, Joy

    2005-01-15

    Implications of some proposed theories of quantum gravity for neutrino flavor oscillations are explored within the context of modified dispersion relations of special relativity. In particular, approximate expressions for Planck scale-induced deviations from the standard oscillation length are obtained as functions of neutrino mass, energy, and propagation distance. Grounding on these expressions, it is pointed out that, in general, even those deviations that are suppressed by the second power of the Planck energy may be observable for ultra-high-energy neutrinos, provided they originate at cosmological distances. In fact, for neutrinos in the highest energy range of EeV to ZeV, deviations that are suppressed by as much as the seventh power of the Planck energy may become observable. Accordingly, realistic possibilities of experimentally verifying these deviations by means of the next generation neutrino detectors--such as IceCube and ANITA--are investigated.

  18. Category:Smart Grid Definitions | Open Energy Information

    Open Energy Information (Open El) [EERE & EIA]

    Grant Program M Definition:Meter Data Analysis System Definition:Microgrid Controller M cont. Definition:Mode Meter R Definition:Remote Fault Indicators...

  19. EIAs Proposed Definitions for Natural Gas Liquids

    Annual Energy Outlook

    Definitions for Natural Gas Liquids 1 June 14, 2013 EIA's Proposed Definitions for Natural Gas Liquids Term Current Definition Proposed Definition Note Lease condensate Condensate ...

  20. Sociocultural definitions of risk

    SciTech Connect (OSTI)

    Rayner, S.

    1990-10-01

    Public constituencies frequently are criticized by technical experts as being irrational in response to low-probability risks. This presentation argued that most people are concerned with a variety of risk attributes other than probability and that is rather irrational to exclude these from the definition and analysis of technological risk. Risk communication, which is at the heart of the right-to-know concept, is described as the creation of shared meaning rather than the mere transmission of information. A case study of utilities, public utility commissions, and public interest groups illustrates how the diversity of institutional cultures in modern society leads to problems for the creation of shared meanings in establishing trust, distributing liability, and obtaining consent to risk. This holistic approach to risk analysis is most appropriate under conditions of high uncertainty and/or decision stakes. 1 fig., 5 tabs.

  1. Energy Intensity Indicators: Terminology and Definitions

    Energy.gov [DOE]

    The Energy Intensity Indicators website uses the following terms with their associated definitions. The terms related to various definitions of energy are discussed first.

  2. Geothermal Resource Exploration And Definition | Open Energy...

    Open Energy Information (Open El) [EERE & EIA]

    Definition Jump to: navigation, search OpenEI Reference LibraryAdd to library Book: Geothermal Resource Exploration And Definition Abstract No abstract prepared. Authors Jay S....

  3. Industry Terms and Definitions | Open Energy Information

    Open Energy Information (Open El) [EERE & EIA]

    Terms and Definitions Jump to: navigation, search OpenEI Reference LibraryAdd to library Web Site: Industry Terms and Definitions Author Liberty Pioneer educational materials...

  4. Perihelion precession for modified Newtonian gravity

    SciTech Connect (OSTI)

    Schmidt, Hans-Juergen

    2008-07-15

    We calculate the perihelion precession {delta} for nearly circular orbits in a central potential V(r). Differently from other approaches to this problem, we do not assume that the potential is close to the Newtonian one. The main idea in the deduction is to apply the underlying symmetries of the system to show that {delta} must be a function of r{center_dot}V{sup ''}(r)/V{sup '}(r) and to use the transformation behavior of {delta} in a rotating system of reference. This is equivalent to say that the effective potential can be written in a one-parameter set of possibilities as the sum of centrifugal potential and potential of the central force. We get the following universal formula valid for V{sup '}(r)>0 reading {delta}(r)=2{pi}{center_dot}[(1/{radical}(3+r{center_dot}V{sup ''}(r)/V{sup '}(r)))-1]. It has to be read as follows: a circular orbit at this value r exists and is stable if and only if this {delta} is well-defined as real; and if this is the case, then the angular difference from one perihelion to the next one for nearly circular orbits at this r is exactly 2{pi}+{delta}(r). Then we apply this result to examples of recent interest like modified Newtonian gravity and linearized fourth-order gravity. In the second part of the paper, we generalize this universal formula to static spherically symmetric space-times ds{sup 2}=-e{sup 2{lambda}}{sup (r)}dt{sup 2}+e{sup 2{mu}}{sup (r)}dr{sup 2}+r{sup 2}d{omega}{sup 2}; for orbits near r it reads {delta}=2{pi}{center_dot}[(e{sup {mu}}{sup (r)}/{radical}(3-2r{center_dot}{lambda}{sup '}(r)+r{center_dot}{lambda}{sup ''}(r)/{lambda}{sup '}(r)))-1] and can be applied to a large class of theories. For the Schwarzschild black hole with mass parameter m>0 it leads to {delta}=2{pi}{center_dot}[(1/{radical}(1-(6m/r)))-1], a surprisingly unknown formula. It represents a strict result and is applicable for all values r>6m and is in good agreement with the fact that stable circular orbits exist for r>6m only. For r>>m, one can

  5. Ground Gravity Survey At Cove Fort Area - Vapor (Warpinski, Et...

    Open Energy Information (Open El) [EERE & EIA]

    Ground Gravity Survey Activity Date Usefulness not indicated DOE-funding Unknown Notes Update to Warpinski, et al., 2002 References N. R. Warpinski, A. R. Sattler, R. Fortuna, D....

  6. Ground Gravity Survey At Dixie Valley Geothermal Area (Blackwell...

    Open Energy Information (Open El) [EERE & EIA]

    local studies conducted in the past. Gravity data measured in the 1970's by Hunt Oil, Sun Oil, and Southland royalty (all unpublished reports) ware used. These data were combined...

  7. Ground Gravity Survey At Neal Hot Springs Geothermal Area (U...

    Open Energy Information (Open El) [EERE & EIA]

    survey was completed by MWH Geo-Surveys. Interpretations were made by creating a 3D density inversion map. Gravity and magnetic data were used in siting the first production...

  8. Ground Gravity Survey At Mt Princeton Hot Springs Geothermal...

    Open Energy Information (Open El) [EERE & EIA]

    lithologic distrubtions Notes Gravity low associated with Mt. Princeton Batholith; density contrast of -0.5 gcm3 of valley-fill sediments relative to batholith References J.E....

  9. Geologic interpretation of gravity and magnetic data in the Salida...

    Open Energy Information (Open El) [EERE & EIA]

    interpretation of gravity and magnetic data in the Salida region, Colorado Authors J.E. Case and R.F. Sikora Published U.S. Geological Survey Open-File Report, 1984 Report...

  10. Ground Gravity Survey At Truckhaven Area (Layman Energy Associates...

    Open Energy Information (Open El) [EERE & EIA]

    9. The 95 magnetotelluric (MT) soundings cover a central area of about 80 square kilometers. The 126 gravity stations extend over a broader area of about 150 square kilometers,...

  11. Regional Gravity Survey of the Northern Great Salt Lake Desert...

    Open Energy Information (Open El) [EERE & EIA]

    of about -196 mgal over the alluvium-covered graben areas. The gravity high over the Raft River Mountains apparently corresponds with the Raft River Mountains anticline. A belt...

  12. Ground Gravity Survey At Dixie Valley Geothermal Area (Iovenitti...

    Open Energy Information (Open El) [EERE & EIA]

    project area. These data were used in conjunction with past gravity data reported in by Smith et al (2001) and Blackwell et al (2005). The analysis of these data had not been...

  13. Ionospheric acoustic and gravity waves associated with midlatitude thunderstorms

    DOE PAGES-Beta [OSTI]

    Lay, Erin H.; Shao, Xuan -Min; Kendrick, Alexander K.; Carrano, Charles S.

    2015-07-30

    Acoustic waves with periods of 2–4 min and gravity waves with periods of 6–16 min have been detected at ionospheric heights (25–350 km) using GPS total electron content measurements. The area disturbed by these waves and the wave amplitudes have been associated with underlying thunderstorm activity. A statistical study comparing Next Generation Weather Radar thunderstorm measurements with ionospheric acoustic and gravity waves in the midlatitude U.S. Great Plains region was performed for the time period of May–July 2005. An increase of ionospheric acoustic wave disturbed area and amplitude is primarily associated with large thunderstorms (mesoscale convective systems). Ionospheric gravity wavemore » disturbed area and amplitude scale with thunderstorm activity, with even small storms (i.e., individual storm cells) producing an increase of gravity waves.« less

  14. Ionospheric acoustic and gravity waves associated with midlatitude thunderstorms

    SciTech Connect (OSTI)

    Lay, Erin H.; Shao, Xuan -Min; Kendrick, Alexander K.; Carrano, Charles S.

    2015-07-30

    Acoustic waves with periods of 2–4 min and gravity waves with periods of 6–16 min have been detected at ionospheric heights (25–350 km) using GPS total electron content measurements. The area disturbed by these waves and the wave amplitudes have been associated with underlying thunderstorm activity. A statistical study comparing Next Generation Weather Radar thunderstorm measurements with ionospheric acoustic and gravity waves in the midlatitude U.S. Great Plains region was performed for the time period of May–July 2005. An increase of ionospheric acoustic wave disturbed area and amplitude is primarily associated with large thunderstorms (mesoscale convective systems). Ionospheric gravity wave disturbed area and amplitude scale with thunderstorm activity, with even small storms (i.e., individual storm cells) producing an increase of gravity waves.

  15. Correlations estimate volume distilled using gravity, boiling point

    SciTech Connect (OSTI)

    Moreno, A.; Consuelo Perez de Alba, M. del; Manriquez, L.; Guardia Mendoz, P. de la

    1995-10-23

    Mathematical nd graphic correlations have been developed for estimating cumulative volume distilled as a function of crude API gravity and true boiling point (TBP). The correlations can be used for crudes with gravities of 21--34{degree} API and boiling points of 150--540 C. In distillation predictions for several mexican and Iraqi crude oils, the correlations have exhibited accuracy comparable to that of laboratory measurements. The paper discusses the need for such a correlation and the testing of the correlation.

  16. NUT-charged black holes in Gauss-Bonnet gravity

    SciTech Connect (OSTI)

    Dehghani, M.H.; Mann, R.B.

    2005-12-15

    We investigate the existence of Taub-NUT (Newman-Unti-Tamburino) and Taub-bolt solutions in Gauss-Bonnet gravity and obtain the general form of these solutions in d dimensions. We find that for all nonextremal NUT solutions of Einstein gravity having no curvature singularity at r=N, there exist NUT solutions in Gauss-Bonnet gravity that contain these solutions in the limit that the Gauss-Bonnet parameter {alpha} goes to zero. Furthermore there are no NUT solutions in Gauss-Bonnet gravity that yield nonextremal NUT solutions to Einstein gravity having a curvature singularity at r=N in the limit {alpha}{yields}0. Indeed, we have nonextreme NUT solutions in 2+2k dimensions with nontrivial fibration only when the 2k-dimensional base space is chosen to be CP{sup 2k}. We also find that the Gauss-Bonnet gravity has extremal NUT solutions whenever the base space is a product of 2-torii with at most a two-dimensional factor space of positive curvature. Indeed, when the base space has at most one positively curved two-dimensional space as one of its factor spaces, then Gauss-Bonnet gravity admits extreme NUT solutions, even though there a curvature singularity exists at r=N. We also find that one can have bolt solutions in Gauss-Bonnet gravity with any base space with factor spaces of zero or positive constant curvature. The only case for which one does not have bolt solutions is in the absence of a cosmological term with zero curvature base space.

  17. Two-phase computer codes for zero-gravity applications

    SciTech Connect (OSTI)

    Krotiuk, W.J.

    1986-10-01

    This paper discusses the problems existing in the development of computer codes which can analyze the thermal-hydraulic behavior of two-phase fluids especially in low gravity nuclear reactors. The important phenomenon affecting fluid flow and heat transfer in reduced gravity is discussed. The applicability of using existing computer codes for space applications is assessed. Recommendations regarding the use of existing earth based fluid flow and heat transfer correlations are made and deficiencies in these correlations are identified.

  18. Fulya Dogan Key | Argonne National Laboratory

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Fulya Dogan Key Assistant Chemist Telephone (630) 252-1079 E-mail fdogan@anl.gov Projects Interfacial Materials Chemistry

  19. Florida Keys Electric Cooperative- Residential Rebate Program

    Energy.gov [DOE]

    Note: The Florida Keys Electric Cooperative rebates were depleted in June of 2015. According to the website, rebates will be offered again dependent upon future funding.

  20. Carotenoid Pigment is the Key to Photoprotection

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    ALS researchers have recently discovered a surprising key event in this energy-quenching process. Photoprotection Through Shifting Pigments Through photosynthesis, plants are able...

  1. PARKING KEY: State Handicap Medically Permitted

    National Nuclear Security Administration (NNSA)

    PARKING KEY: State Handicap Medically Permitted Preferred (LEED) Visitor Motorcycle New Parking Spots Parallel Parking NATIONAL SECURITY CAMPUS The DOE's National Security Campus...

  2. Schedules of Key Environmental Impact Statements

    Office of Energy Efficiency and Renewable Energy (EERE)

    This document graphically displays the milestone dates and projected schedules of key Environmental Impact Statements (updated monthly). This chart represents anticipated activity and is not a...

  3. Brain Receptor Structures Key to Future Therapeutics

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Brain Receptor Structures Key to Future Therapeutics Print With an aging population in ... diseases affecting the brain and its ability to make new connections and recall memories. ...

  4. Brain Receptor Structures Key to Future Therapeutics

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Brain Receptor Structures Key to Future Therapeutics Print With an aging population in America, it is more important than ever to discover ways to treat or prevent diseases...

  5. TESTING ALTERNATIVE THEORIES OF GRAVITY USING THE SUN

    SciTech Connect (OSTI)

    Casanellas, Jordi; Pani, Paolo; Lopes, Ilidio; Cardoso, Vitor E-mail: paolo.pani@ist.utl.pt E-mail: vitor.cardoso@ist.utl.pt

    2012-01-20

    We propose a new approach to test possible corrections to Newtonian gravity using solar physics. The high accuracy of current solar models and new precise observations allow us to constrain corrections to standard gravity at unprecedented levels. Our case study is Eddington-inspired gravity, an attractive modified theory of gravity which results in non-singular cosmology and collapse. The theory is equivalent to standard gravity in vacuum, but it sensibly differs from it within matter. For instance, it affects the evolution and the equilibrium structure of the Sun, giving different core temperature profiles, and deviations in the observed acoustic modes and in solar neutrino fluxes. Comparing the predictions from a modified solar model with observations, we constrain the coupling parameter of the theory, |{kappa}{sub g}| {approx}< 3 Multiplication-Sign 10{sup 5} m{sup 5} s{sup -2} kg{sup -1}. Our results show that the Sun can be used to efficiently constrain alternative theories of gravity.

  6. Finite field-dependent symmetries in perturbative quantum gravity

    SciTech Connect (OSTI)

    Upadhyay, Sudhaker

    2014-01-15

    In this paper we discuss the absolutely anticommuting nilpotent symmetries for perturbative quantum gravity in general curved spacetime in linear and non-linear gauges. Further, we analyze the finite field-dependent BRST (FFBRST) transformation for perturbative quantum gravity in general curved spacetime. The FFBRST transformation changes the gauge-fixing and ghost parts of the perturbative quantum gravity within functional integration. However, the operation of such symmetry transformation on the generating functional of perturbative quantum gravity does not affect the theory on physical ground. The FFBRST transformation with appropriate choices of finite BRST parameter connects non-linear CurciFerrari and Landau gauges of perturbative quantum gravity. The validity of the results is also established at quantum level using BatalinVilkovisky (BV) formulation. -- Highlights: The perturbative quantum gravity is treated as gauge theory. BRST and anti-BRST transformations are developed in linear and non-linear gauges. BRST transformation is generalized by making it finite and field dependent. Connection between linear and non-linear gauges is established. Using BV formulation the results are established at quantum level also.

  7. Project Definition Rating Index (PDRI)

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Office of Environmental Management (EM) Project Definition Rating Index (EM-PDRI) is a modification of a commercially developed planning tool that has been tested by an EM team specifically for...

  8. Nonlinear structure formation in nonlocal gravity

    SciTech Connect (OSTI)

    Barreira, Alexandre; Li, Baojiu; Hellwing, Wojciech A.; Baugh, Carlton M.; Pascoli, Silvia E-mail: baojiu.li@durham.ac.uk E-mail: c.m.baugh@durham.ac.uk

    2014-09-01

    We study the nonlinear growth of structure in nonlocal gravity models with the aid of N-body simulation and the spherical collapse and halo models. We focus on a model in which the inverse-squared of the d'Alembertian operator acts on the Ricci scalar in the action. For fixed cosmological parameters, this model differs from ΛCDM by having a lower late-time expansion rate and an enhanced and time-dependent gravitational strength ∼ 6% larger today). Compared to ΛCDM today, in the nonlocal model, massive haloes are slightly more abundant (by ∼ 10% at M ∼ 10{sup 14} M{sub ⊙}/h) and concentrated ≈ 8% enhancement over a range of mass scales), but their linear bias remains almost unchanged. We find that the Sheth-Tormen formalism describes the mass function and halo bias very well, with little need for recalibration of free parameters. The fitting of the halo concentrations is however essential to ensure the good performance of the halo model on small scales. For k ∼> 1 h/Mpc, the amplitude of the nonlinear matter and velocity divergence power spectra exhibits a modest enhancement of ∼ 12% to 15%, compared to ΛCDM today. This suggests that this model might only be distinguishable from ΛCDM by future observational missions. We point out that the absence of a screening mechanism may lead to tensions with Solar System tests due to local time variations of the gravitational strength, although this is subject to assumptions about the local time evolution of background averaged quantities.

  9. Gravity survey of the southwestern part of the sourthern Utah geothermal belt

    SciTech Connect (OSTI)

    Green, R.T.; Cook, K.L.

    1981-03-01

    A gravity survey covering an area of 6200 km/sup 2/ was made over the southwestern part of the southern Utah geothermal belt. The objective of the gravity survey is to delineate the geologic structures and assist in the understanding of the geothermal potential of the area. A total of 726 new gravity stations together with 205 existing gravity stations, are reduced to give: (1) a complete Bouguer gravity anomaly map, and (2) a fourth-order residual gravity anomaly map; both maps have a 2-mgal contour interval. The complete Bouguer gravity anomaly map shows an east-trending regional gravity belt with a total relief of about 70 mgal which crosses the central portion of the survey area. The gravity belt is attributed to a crustal lateral density variation of 0.1 gm/cc from a depth of 5 to 15 km.

  10. Captured key electrical safety lockout system

    DOE Patents [OSTI]

    Darimont, Daniel E.

    1995-01-01

    A safety lockout apparatus for an electrical circuit includes an electrical switch, a key, a lock and a blocking mechanism. The electrical switch is movable between an ON position at which the electrical circuit is energized and an OFF position at which the electrical circuit is deactivated. The lock is adapted to receive the key and is rotatable among a plurality of positions by the key. The key is only insertable and removable when the lock is at a preselected position. The lock is maintained in the preselected position when the key is removed from the lock. The blocking mechanism physically maintains the switch in its OFF position when the key is removed from the lock. The blocking mechanism preferably includes a member driven by the lock between a first position at which the electrical switch is movable between its ON and OFF positions and a second position at which the member physically maintains the electrical switch in its OFF position. Advantageously, the driven member's second position corresponds to the preselected position at which the key can be removed from and inserted into the lock.

  11. Captured key electrical safety lockout system

    DOE Patents [OSTI]

    Darimont, D.E.

    1995-10-31

    A safety lockout apparatus for an electrical circuit includes an electrical switch, a key, a lock and a blocking mechanism. The electrical switch is movable between an ON position at which the electrical circuit is energized and an OFF position at which the electrical circuit is deactivated. The lock is adapted to receive the key and is rotatable among a plurality of positions by the key. The key is only insertable and removable when the lock is at a preselected position. The lock is maintained in the preselected position when the key is removed from the lock. The blocking mechanism physically maintains the switch in its OFF position when the key is removed from the lock. The blocking mechanism preferably includes a member driven by the lock between a first position at which the electrical switch is movable between its ON and OFF positions and a second position at which the member physically maintains the electrical switch in its OFF position. Advantageously, the driven member`s second position corresponds to the preselected position at which the key can be removed from and inserted into the lock. 7 figs.

  12. Assessment of zero gravity effects on space worker health and safety

    SciTech Connect (OSTI)

    Not Available

    1980-11-01

    One objective of the study is to assess the effects of all currently known deviations from normal of medical, physiological, and biochemical parameters which appear to be due to zero gravity (zero-g) environment and to acceleration and deceleration to be experienced, as outlined in the reference Solar Power Satellite (SPS) design, by space worker. Study results include identification of possible health or safety effects on space workers - either immediate or delayed - due to the zero gravity environment and acceleration and deceleration; estimation of the probability that an individual will be adversely affected; description of the possible consequence to work efficiently in persons adversely affected; and description of the possible/probable consequences to immediate and future health of individuals exposed to this environment. A research plan, which addresses the uncertainties in current knowledge regarding the health and safety hazards to exposed SPS space workers, is presented. Although most adverse affects experienced during space flight soon disappeared upon return to the Earth's environment, there remains a definite concern for the long-term effects to SPS space workers who might spend as much as half their time in space during a possible five-year career period. The proposed 90-day up/90 day down cycle, coupled with the fact that most of the effects of weightlessness may persist throughout the flight along with the realization that recovery may occupy much of the terrestrial stay, may keep the SPS workers in a deviant physical condition or state of flux for 60 to 100% of their five-year career. (JGB)

  13. Correlation between precision gravity and subsidence measurements at Cerro Prieto

    SciTech Connect (OSTI)

    Zelwer, R.; Grannell, R.B.

    1982-10-01

    Precision gravity measurements were made in the region of the Cerro Prieto geothermal field at yearly intervals from 1977 to 1981 to assess the feasibility of using gravity to determine subsurface reservoir changes with time. The extent of mass recharge in response to the continued production of fluids from this field was studied. Changes in gravity and ground elevation were observed throughout the region for the period of observation. Results indicate that the largest changes observed were the result of the Magnitude 6.1 (Caltech) Victoria earthquake of 8 June 1980. The epicenter of this earthquake was located 25 km southeast of the field on the Cerro Prieto Fault, which bounds the field on the southwest. Subsidence of up to 55 cm was measured east of the power plant, in the region between the northern end of the Cerro Prieto Fault and the southern end of the Imperial Fault. This area has been postulated to be the site of an active spreading center or pull-apart basin, and has been characterized by a high level of seismic activity during the last 10 years. Minor subsidence and small related gravity changes for the period preceeding the Victoria earthquake suggest that in spite of large fluid production rates, the reservoir is being almost completely recharged and that a measurable increase in subsurface density may be taking place. The results of measurements of horizontal ground motions made in this area are discussed in relation to the gravity and subsidence observations.

  14. Waste Isolation Pilot Plant (WIPP) site gravity survey and interpretation

    SciTech Connect (OSTI)

    Barrows, L.J.; Fett, J.D.

    1983-04-01

    A portion of the WIPP site has been extensively surveyed with high-precision gravity. The main survey (in T22S, R31E) covered a rectangular area 2 by 4-1/3 mi encompassing all of WIPP site Zone II and part of the disturbed zone to the north of the site. Stations were at 293-ft intervals along 13 north-south lines 880 ft apart. The data are considered accurate to within a few hundredths of a milligal. Long-wavelength gravity anomalies correlate well with seismic time structures on horizons below the Castile Formation. Both the gravity anomalies and the seismic time structures are interpreted as resulting from related density and velocity variations within the Ochoan Series. Shorter wavelength negative gravity anomalies are interpreted as resulting from bulk density alteration in the vicinity of karst conduits. The WIPP gravity survey was unable to resolve low-amplitude, long-wavelength anomalies that should result from the geologic structures within the disturbed zone. It did indicate the degree and character of karst development within the surveyed area.

  15. Angular momentum transport via internal gravity waves in evolving stars

    SciTech Connect (OSTI)

    Fuller, Jim; Lecoanet, Daniel; Cantiello, Matteo; Brown, Ben

    2014-11-20

    Recent asteroseismic advances have allowed for direct measurements of the internal rotation rates of many subgiant and red giant stars. Unlike the nearly rigidly rotating Sun, these evolved stars contain radiative cores that spin faster than their overlying convective envelopes, but slower than they would in the absence of internal angular momentum transport. We investigate the role of internal gravity waves in angular momentum transport in evolving low-mass stars. In agreement with previous results, we find that convectively excited gravity waves can prevent the development of strong differential rotation in the radiative cores of Sun-like stars. As stars evolve into subgiants, however, low-frequency gravity waves become strongly attenuated and cannot propagate below the hydrogen-burning shell, allowing the spin of the core to decouple from the convective envelope. This decoupling occurs at the base of the subgiant branch when stars have surface temperatures of T ≈ 5500 K. However, gravity waves can still spin down the upper radiative region, implying that the observed differential rotation is likely confined to the deep core near the hydrogen-burning shell. The torque on the upper radiative region may also prevent the core from accreting high angular momentum material and slow the rate of core spin-up. The observed spin-down of cores on the red giant branch cannot be totally attributed to gravity waves, but the waves may enhance shear within the radiative region and thus increase the efficacy of viscous/magnetic torques.

  16. First tsunami gravity wave detection in ionospheric radio occultation data

    SciTech Connect (OSTI)

    Coïsson, Pierdavide; Lognonné, Philippe; Walwer, Damian; Rolland, Lucie M.

    2015-05-09

    After the 11 March 2011 earthquake and tsunami off the coast of Tohoku, the ionospheric signature of the displacements induced in the overlying atmosphere has been observed by ground stations in various regions of the Pacific Ocean. We analyze here the data of radio occultation satellites, detecting the tsunami-driven gravity wave for the first time using a fully space-based ionospheric observation system. One satellite of the Constellation Observing System for Meteorology, Ionosphere and Climate (COSMIC) recorded an occultation in the region above the tsunami 2.5 h after the earthquake. The ionosphere was sounded from top to bottom, thus providing the vertical structure of the gravity wave excited by the tsunami propagation, observed as oscillations of the ionospheric Total Electron Content (TEC). The observed vertical wavelength was about 50 km, with maximum amplitude exceeding 1 total electron content unit when the occultation reached 200 km height. We compared the observations with synthetic data obtained by summation of the tsunami-coupled gravity normal modes of the Earth/Ocean/atmosphere system, which models the associated motion of the ionosphere plasma. These results provide experimental constraints on the attenuation of the gravity wave with altitude due to atmosphere viscosity, improving the understanding of the propagation of tsunami-driven gravity waves in the upper atmosphere. They demonstrate that the amplitude of the tsunami can be estimated to within 20% by the recorded ionospheric data.

  17. First tsunami gravity wave detection in ionospheric radio occultation data

    DOE PAGES-Beta [OSTI]

    Coïsson, Pierdavide; Lognonné, Philippe; Walwer, Damian; Rolland, Lucie M.

    2015-05-09

    After the 11 March 2011 earthquake and tsunami off the coast of Tohoku, the ionospheric signature of the displacements induced in the overlying atmosphere has been observed by ground stations in various regions of the Pacific Ocean. We analyze here the data of radio occultation satellites, detecting the tsunami-driven gravity wave for the first time using a fully space-based ionospheric observation system. One satellite of the Constellation Observing System for Meteorology, Ionosphere and Climate (COSMIC) recorded an occultation in the region above the tsunami 2.5 h after the earthquake. The ionosphere was sounded from top to bottom, thus providing themore » vertical structure of the gravity wave excited by the tsunami propagation, observed as oscillations of the ionospheric Total Electron Content (TEC). The observed vertical wavelength was about 50 km, with maximum amplitude exceeding 1 total electron content unit when the occultation reached 200 km height. We compared the observations with synthetic data obtained by summation of the tsunami-coupled gravity normal modes of the Earth/Ocean/atmosphere system, which models the associated motion of the ionosphere plasma. These results provide experimental constraints on the attenuation of the gravity wave with altitude due to atmosphere viscosity, improving the understanding of the propagation of tsunami-driven gravity waves in the upper atmosphere. They demonstrate that the amplitude of the tsunami can be estimated to within 20% by the recorded ionospheric data.« less

  18. LERF Key People Contact List | Jefferson Lab

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    LERF Key People Contact List Program Management: Dr. Stephen Benson LERF Hall Leader felman@jlab.org 757-269-5026 (fax: 757-269-5519) 12000 Jefferson Avenue, Suite 19 Newport News, ...

  19. Explosives performance key to stockpile stewardship

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Explosives performance key to stockpile stewardship Explosives performance key to stockpile stewardship A new video shows how researchers use scientific guns to induce shock waves into explosive materials to study their performance and properties. November 3, 2014 Adam Pacheco of shock and detonation physics presses the "fire" button during an experiment at the two-stage gas gun facility. Adam Pacheco of shock and detonation physics presses the "fire" button during an

  20. 'Thirsty' Metals Key to Longer Battery Lifetimes

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    'Thirsty' Metals Key to Longer Battery Lifetimes 'Thirsty' Metals Key to Longer Battery Lifetimes Computations at NERSC show how multiply charged metal ions impact battery capacity June 30, 2014 Contact: Kathy Kincade, +1 510 495 2124, kkincade@lbl.gov PCCPxantheascover Imagine a cell phone battery that lasted a whole week on a single charge. A car battery that worked for months between charges. A massive battery that stores the intermittent electricity from wind turbines and releases it when

  1. STGWG Key Outcomes for May 3, 2010

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Key Outcomes-Nashville 2010 Page 1 State and Tribal Government Working Group (STGWG) Nashville, Tennessee - May 3, 2010 KEY OUTCOMES OVERVIEW Members appreciated the participation of all DOE officials at the STGWG meeting in Nashville, and are especially appreciative of the participation of high-level DOE management, such as Sky Gallegos, Deputy Assistant Secretary of the Office of Congressional and Intergovernmental Affairs, and Frank Marcinowski, Acting Chief Technical Officer and Deputy

  2. On the null trajectories in conformal Weyl gravity

    SciTech Connect (OSTI)

    Villanueva, J.R.; Olivares, Marco E-mail: marco.olivaresrubilar@gmail.com

    2013-06-01

    In this work we find analytical solutions to the null geodesics around a black hole in the conformal Weyl gravity. Exact expressions for the horizons are found, and they depend on the cosmological constant and the coupling constants of the conformal Weyl gravity. Then, we study the radial motion from the point of view of the proper and coordinate frames, and compare it with that found in spacetimes of general relativity. The angular motion is also examined qualitatively by means of an effective potential; quantitatively, the equation of motion is solved in terms of wp-Weierstrass elliptic function. Thus, we find the deflection angle for photons without using any approximation, which is a novel result for this kind of gravity.

  3. Monitoring the Bulalo geothermal reservoir, Philippines, using precision gravity data

    SciTech Connect (OSTI)

    San Andres, R.B.; Pedersen, J.R.

    1993-10-01

    Precision gravity monitoring of the Bulalo geothermal field began in 1980 to estimate the natural mass recharge to the reservoir. Between 1980 and 1991, gravity decreases exceeding 2.5 {times} 10{sup {minus}6} N/kg (250 microgals) were observed in response to fluid withdrawals. A maximum rate of {minus}26 microgals per year was observed near the production center. Mass discharges predicted by recent reservoir simulation modeling generally match those inferred from the observed gravity data. According to simulation studies, no recharge occurred between 1980 and 1984. The mass recharge between 1984 and 1991 was estimated to be 30% of net fluid withdrawal during the same period, equivalent to an average rate of 175 kg/s (630 metric tons per hour).

  4. An improved multipole approximation for self-gravity and its importance for core-collapse supernova simulations

    SciTech Connect (OSTI)

    Couch, Sean M.; Graziani, Carlo; Flocke, Norbert

    2013-12-01

    Self-gravity computation by multipole expansion is a common approach in problems such as core-collapse and Type Ia supernovae, where single large condensations of mass must be treated. The standard formulation of multipole self-gravity in arbitrary coordinate systems suffers from two significant sources of error, which we correct in the formulation presented in this article. The first source of error is due to the numerical approximation that effectively places grid cell mass at the central point of the cell, then computes the gravitational potential at that point, resulting in a convergence failure of the multipole expansion. We describe a new scheme that avoids this problem by computing gravitational potential at cell faces. The second source of error is due to sub-optimal choice of location for the expansion center, which results in angular power at high multipole l values in the gravitational field, requiring a highand expensivevalue of multipole cutoff l {sub max}. By introducing a global measure of angular power in the gravitational field, we show that the optimal coordinate for the expansion is the square-density-weighted mean location. We subject our new multipole self-gravity algorithm, implemented in the FLASH simulation framework, to two rigorous test problems: MacLaurin spheroids for which exact analytic solutions are known, and core-collapse supernovae. We show that key observables of the core-collapse simulations, particularly shock expansion, proto-neutron star motion, and momentum conservation, are extremely sensitive to the accuracy of the multipole gravity, and the accuracy of their computation is greatly improved by our reformulated solver.

  5. TEC Working Group Topic Groups Rail Key Documents | Department...

    Office of Environmental Management (EM)

    Rail Key Documents TEC Working Group Topic Groups Rail Key Documents KEY DOCUMENTS Radiation Monitoring Subgroup Intermodal Subgroup Planning Subgroup Current FRA State Rail Safety ...

  6. TEC Working Group Topic Groups Routing Key Documents | Department...

    Office of Environmental Management (EM)

    Key Documents TEC Working Group Topic Groups Routing Key Documents KEY DOCUMENTS Proposed Task Plan - Routing Topic Group (53.69 KB) More Documents & Publications TEC Working Group ...

  7. TEC Working Group Topic Groups Section 180(c) Key Documents ...

    Office of Environmental Management (EM)

    Section 180(c) Key Documents TEC Working Group Topic Groups Section 180(c) Key Documents Key Documents Briefing Package for Section 180(c) Implementation - July 2005 Executive ...

  8. Key Activities in Energy Efficiency | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    About Key Activities in Energy Efficiency Key Activities in Energy Efficiency The Building Technologies Office conducts work in three key areas in order to continually develop ...

  9. 2015 Key Water Power Program and National Laboratory Accomplishments...

    Energy Savers

    Key Water Power Program and National Laboratory Accomplishments Report 2015 Key Water Power Program and National Laboratory Accomplishments Report 2015 Key Water Power Program and ...

  10. 2015 Key Water Power Program and National Laboratory Accomplishments...

    Energy Savers

    2015 Key Water Power Program and National Laboratory Accomplishments Slideshow 2015 Key Water Power Program and National Laboratory Accomplishments Slideshow Addthis 2015 Key Water ...

  11. On axionic field ranges, loopholes and the weak gravity conjecture

    DOE PAGES-Beta [OSTI]

    Brown, Jon; Cottrell, William; Shiu, Gary; Soler, Pablo

    2016-04-05

    Here, we clarify some aspects of the impact that the Weak Gravity Conjecture has on models of (generalized) natural inflation. In particular we address certain technical and conceptual concerns recently raised regarding the stringent constraints and conclusions found in our previous work. We also point out the difficulties faced by attempts to evade these constraints. Furthermore, these new considerations improve the understanding of the quantum gravity constraints we found and further support the conclusion that it remains challenging for axions to drive natural inflation.

  12. Spectral regularisation: induced gravity and the onset of inflation

    SciTech Connect (OSTI)

    Kurkov, Max A.; Sakellariadou, Mairi E-mail: mairi.sakellariadou@kcl.ac.uk

    2014-01-01

    Using spectral regularisation, we compute the Weyl anomaly and express the anomaly generating functional of the quantum effective action through a collective scalar degree of freedom of all quantum vacuum fluctuations. Such a formulation allows us to describe induced gravity on an equal footing with the anomaly-induced effective action, in a self-consistent way. We then show that requiring stability of the cosmological constant under loop quantum corrections, Sakharov's induced gravity and Starobinsky's anomaly-induced inflation are either both present or both absent, depending on the particle content of the theory.

  13. Minimum length, extra dimensions, modified gravity and black hole remnants

    SciTech Connect (OSTI)

    Maziashvili, Michael

    2013-03-01

    We construct a Hilbert space representation of minimum-length deformed uncertainty relation in presence of extra dimensions. Following this construction, we study corrections to the gravitational potential (back reaction on gravity) with the use of correspondingly modified propagator in presence of two (spatial) extra dimensions. Interestingly enough, for r?0 the gravitational force approaches zero and the horizon for modified Schwarzschild-Tangherlini space-time disappears when the mass approaches quantum-gravity energy scale. This result points out to the existence of zero-temperature black hole remnants in ADD brane-world model.

  14. Stabilization of linear higher derivative gravity with constraints

    SciTech Connect (OSTI)

    Chen, Tai-jun; Lim, Eugene A. E-mail: eugene.a.lim@gmail.com

    2014-05-01

    We show that the instabilities of higher derivative gravity models with quadratic curvature invariant ?R{sup 2}+?R{sub ??}R{sup ??} can be removed by judicious addition of constraints at the quadratic level of metric fluctuations around Minkowski/de Sitter background. With a suitable parameter choice, we find that the instabilities of helicity-0, 1, 2 modes can be removed while reducing the dimensionality of the original phase space. To retain the renormalization properties of higher derivative gravity, Lorentz symmetry in the constrained theory is explicitly broken.

  15. Gravity Survey of the Carson Sink - Data and Maps

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Faulds, James E.

    Preliminary Interpretation of Results: The Carson Sink is a complex composite basin with several major depocenters (Figures 15 and 16). Major depocenters are present in the south?central, east?central, and northeastern parts of the basin. The distribution of gravity anomalies suggests a complex pattern of faulting in the subsurface of the basin, with many fault terminations, step?overs, and accommodation zones. The pattern of faulting implies that other, previously undiscovered blind geothermal systems are likely in the Carson Sink. The gravity survey was completed near the end of this project. Thus, more thorough analysis of the data and potential locations of blind geothermal systems is planned for future work.

  16. Flat 3-brane with Tension in Cascading Gravity

    SciTech Connect (OSTI)

    Rham, Claudia de; Khoury, Justin; Tolley, Andrew

    2009-10-16

    In the cascading gravity brane-world scenario, our 3-brane lies within a succession of lower-codimension branes, each with their own induced gravity term, embedded into each other in a higher-dimensional space-time. In the (6+1)-dimensional version of this scenario, we show that a 3-brane with tension remains flat, at least for sufficiently small tension that the weak-field approximation is valid. The bulk solution is singular nowhere and remains in the perturbative regime everywhere.

  17. Gravitomagnetic gyroscope precession in Palatini f(R) gravity

    SciTech Connect (OSTI)

    Ruggiero, Matteo Luca

    2009-04-15

    We study gravitomagnetic effects in the Palatini formalism of f(R) gravity. On using the Kerr-de Sitter metric, which is a solution of f(R) field equations, we calculate the impact of f(R) gravity on the gravitomagnetic precession of an orbiting gyroscope. We show that, even though an f(R) contribution is present in principle, its magnitude is negligibly small and far to be detectable in the present (like GP-B) and foreseeable space missions or observational tests around the Earth.

  18. Gravity Survey of the Carson Sink - Data and Maps

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Faulds, James E.

    2013-12-31

    Preliminary Interpretation of Results: The Carson Sink is a complex composite basin with several major depocenters (Figures 15 and 16). Major depocenters are present in the south?central, east?central, and northeastern parts of the basin. The distribution of gravity anomalies suggests a complex pattern of faulting in the subsurface of the basin, with many fault terminations, step?overs, and accommodation zones. The pattern of faulting implies that other, previously undiscovered blind geothermal systems are likely in the Carson Sink. The gravity survey was completed near the end of this project. Thus, more thorough analysis of the data and potential locations of blind geothermal systems is planned for future work.

  19. Spherically symmetric static spacetimes in vacuum f(T) gravity

    SciTech Connect (OSTI)

    Ferraro, Rafael; Fiorini, Franco

    2011-10-15

    We show that Schwarzschild geometry remains as a vacuum solution for those four-dimensional f(T) gravitational theories behaving as ultraviolet deformations of general relativity. In the gentler context of three-dimensional gravity, we also find that the infrared-deformed f(T) gravities, like the ones used to describe the late cosmic speed up of the Universe, have as the circularly symmetric vacuum solution a Deser-de Sitter or a Banados, Teitelboim and Zanelli-like spacetime with an effective cosmological constant depending on the infrared scale present in the function f(T).

  20. On the gauge features of gravity on a Lie algebroid structure

    SciTech Connect (OSTI)

    Fabi, S. Harms, B. Hou, S.

    2014-03-15

    We present the geometric formulation of gravity based on the mathematical structure of a Lie Algebroid. We show that this framework provides the geometrical setting to describe the gauge propriety of gravity.

  1. Problems with propagation and time evolution inf(T)gravity (Journal...

    Office of Scientific and Technical Information (OSTI)

    Problems with propagation and time evolution inf(T)gravity Citation Details In-Document Search Title: Problems with propagation and time evolution inf(T)gravity Authors: Ong, Yen...

  2. Toward large N thermal QCD from dual gravity: The heavy quarkonium...

    Office of Scientific and Technical Information (OSTI)

    Toward large N thermal QCD from dual gravity: The heavy quarkonium potential Citation Details In-Document Search Title: Toward large N thermal QCD from dual gravity: The heavy ...

  3. How Does Gravity Work to Hold a Human Down? | GE Global Research

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Does Gravity Work to Hold a Human Down? Click to email this to a friend (Opens in new ... How Does Gravity Work to Hold a Human Down? 2012.04.13 Chief Scientist Jim Bray discusses ...

  4. Public key infrastructure for DOE security research

    SciTech Connect (OSTI)

    Aiken, R.; Foster, I.; Johnston, W.E.

    1997-06-01

    This document summarizes the Department of Energy`s Second Joint Energy Research/Defence Programs Security Research Workshop. The workshop, built on the results of the first Joint Workshop which reviewed security requirements represented in a range of mission-critical ER and DP applications, discussed commonalties and differences in ER/DP requirements and approaches, and identified an integrated common set of security research priorities. One significant conclusion of the first workshop was that progress in a broad spectrum of DOE-relevant security problems and applications could best be addressed through public-key cryptography based systems, and therefore depended upon the existence of a robust, broadly deployed public-key infrastructure. Hence, public-key infrastructure ({open_quotes}PKI{close_quotes}) was adopted as a primary focus for the second workshop. The Second Joint Workshop covered a range of DOE security research and deployment efforts, as well as summaries of the state of the art in various areas relating to public-key technologies. Key findings were that a broad range of DOE applications can benefit from security architectures and technologies built on a robust, flexible, widely deployed public-key infrastructure; that there exists a collection of specific requirements for missing or undeveloped PKI functionality, together with a preliminary assessment of how these requirements can be met; that, while commercial developments can be expected to provide many relevant security technologies, there are important capabilities that commercial developments will not address, due to the unique scale, performance, diversity, distributed nature, and sensitivity of DOE applications; that DOE should encourage and support research activities intended to increase understanding of security technology requirements, and to develop critical components not forthcoming from other sources in a timely manner.

  5. Definition of GPRA08 benefits metrics

    SciTech Connect (OSTI)

    None, None

    2009-01-18

    Background information for the FY 2007 GPRA methodology review on the definitions of GPRA08 benefits metrics.

  6. Complete Bouguer gravity map of the Nevada Test Site and vicinity, Nevada

    SciTech Connect (OSTI)

    Healey, D.L.; Harris, R.N.; Ponce, D.A.; Oliver, H.W.

    1987-12-31

    About 15,000 gravity stations were used to create the gravity map. Gravity studies at the Nevada Test Site were undertaken to help locate geologically favorable areas for underground nuclear tests and to help characterize potential high-level nuclear waste storage sites. 48 refs. (TEM)

  7. Further stable neutron star models from f(R) gravity

    SciTech Connect (OSTI)

    Astashenok, Artyom V.; Capozziello, Salvatore; Odintsov, Sergei D. E-mail: capozziello@na.infn.it

    2013-12-01

    Neutron star models in perturbative f(R) gravity are considered with realistic equations of state. In particular, we consider the FPS, SLy and other equations of state and a case of piecewise equation of state for stars with quark cores. The mass-radius relations for f(R) = R+R(e{sup ?R/R{sub 0}}?1) model and for R{sup 2} models with logarithmic and cubic corrections are obtained. In the case of R{sup 2} gravity with cubic corrections, we obtain that at high central densities (? > 10?{sub ns}, where ?{sub ns} = 2.7 10{sup 14} g/cm{sup 3} is the nuclear saturation density), stable star configurations exist. The minimal radius of such stars is close to 9 km with maximal mass ? 1.9M{sub ?} (SLy equation). A similar situation takes place for AP4 and BSK20 EoS. Such an effect can give rise to more compact stars than in General Relativity. If observationally identified, such objects could constitute a formidable signature for modified gravity at astrophysical level. Another interesting result can be achieved in modified gravity with only a cubic correction. For some EoS, the upper limit of neutron star mass increases and therefore these EoS can describe realistic star configurations (although, in General Relativity, these EoS are excluded by observational constraints)

  8. Extreme neutron stars from Extended Theories of Gravity

    SciTech Connect (OSTI)

    Astashenok, Artyom V.; Capozziello, Salvatore; Odintsov, Sergei D. E-mail: capozziello@na.infn.it

    2015-01-01

    We discuss neutron stars with strong magnetic mean fields in the framework of Extended Theories of Gravity. In particular, we take into account models derived from f(R) and f(G) extensions of General Relativity where functions of the Ricci curvature invariant R and the Gauss-Bonnet invariant G are respectively considered. Dense matter in magnetic mean field, generated by magnetic properties of particles, is described by assuming a model with three meson fields and baryons octet. As result, the considerable increasing of maximal mass of neutron stars can be achieved by cubic corrections in f(R) gravity. In principle, massive stars with M>4M{sub ?} can be obtained. On the other hand, stable stars with high strangeness fraction (with central densities ?{sub c}?1.52.0 GeV/fm{sup 3}) are possible considering quadratic corrections of f(G) gravity. The magnetic field strength in the star center is of order 68נ10{sup 18} G. In general, we can say that other branches of massive neutron stars are possible considering the extra pressure contributions coming from gravity extensions. Such a feature can constitute both a probe for alternative theories and a way out to address anomalous self-gravitating compact systems.

  9. On singularities of capillary surfaces in the absence of gravity

    DOE PAGES-Beta [OSTI]

    Roytburd, V.

    1983-01-01

    We study numerical solutions to the equation of capillary surfaces in trapezoidal domains in the absence of gravity when the boundary contact angle declines from 90 to some critical value. We also discuss a result on the behavior of solutions in more general domains that confirms numerical calculations.

  10. Entirely passive heat pipe apparatus capable of operating against gravity

    DOE Patents [OSTI]

    Koenig, Daniel R.

    1982-01-01

    The disclosure is directed to an entirely passive heat pipe apparatus capable of operating against gravity for vertical distances in the order of 3 to 7 meters and more. A return conduit into which an inert gas is introduced is used to lower the specific density of the working fluid so that it may be returned a greater vertical distance from condenser to evaporator.

  11. How does gravity save or kill Q-balls?

    SciTech Connect (OSTI)

    Tamaki, Takashi; Sakai, Nobuyuki

    2011-02-15

    We explore stability of gravitating Q-balls with potential V{sub 4}({phi})=(m{sup 2}/2){phi}{sup 2}-{lambda}{phi}{sup 4}+({phi}{sup 6}/M{sup 2}) via catastrophe theory, as an extension of our previous work on Q-balls with potential V{sub 3}({phi})=(m{sup 2}/2){phi}{sup 2}-{mu}{phi}{sup 3}+{lambda}{phi}{sup 4}. In flat spacetime Q-balls with V{sub 4} in the thick-wall limit are unstable and there is a minimum charge Q{sub min}, where Q-balls with Qgravity into account, on the other hand, there exist stable Q-balls with arbitrarily small charge, no matter how weak gravity is. That is, gravity saves Q-balls with small charge. We also show how stability of Q-balls changes as gravity becomes strong.

  12. Handling Key AEO2017 Electric Sector Policy Assumptions and Key Model Updates

    U.S. Energy Information Administration (EIA) (indexed site)

    Key AEO2017 Renewable Electricity Key Model Updates For EIA Renewables Working Group September 1, 2016 By Chris Namovicz Team Leader for Renewable Electricity Analysis Summary of key changes from AEO2016 * AEO 2017 will be a limited release year - Very few side cases and limited analytic write-up (similar to AEO 2015) * We plan on extending the projections to 2050 * Pending any relevant court rulings, the Clean Power Plan will continue to be in the Reference case. * This presentation will focus

  13. Gravity monitoring of CO2 movement during sequestration: Model studies

    SciTech Connect (OSTI)

    Gasperikova, E.; Hoversten, G.M.

    2008-07-15

    We examine the relative merits of gravity measurements as a monitoring tool for geological CO{sub 2} sequestration in three different modeling scenarios. The first is a combined CO{sub 2} enhanced oil recovery (EOR) and sequestration in a producing oil field, the second is sequestration in a brine formation, and the third is for a coalbed methane formation. EOR/sequestration petroleum reservoirs have relatively thin injection intervals with multiple fluid components (oil, hydrocarbon gas, brine, and CO{sub 2}), whereas brine formations usually have much thicker injection intervals and only two components (brine and CO{sub 2}). Coal formations undergoing methane extraction tend to be thin (3-10 m), but shallow compared to either EOR or brine formations. The injection of CO{sub 2} into the oil reservoir produced a bulk density decrease in the reservoir. The spatial pattern of the change in the vertical component of gravity (G{sub z}) is directly correlated with the net change in reservoir density. Furthermore, time-lapse changes in the borehole G{sub z} clearly identified the vertical section of the reservoir where fluid saturations are changing. The CO{sub 2}-brine front, on the order of 1 km within a 20 m thick brine formation at 1900 m depth, with 30% CO{sub 2} and 70% brine saturations, respectively, produced a -10 Gal surface gravity anomaly. Such anomaly would be detectable in the field. The amount of CO{sub 2} in a coalbed methane test scenario did not produce a large enough surface gravity response; however, we would expect that for an industrial size injection, the surface gravity response would be measurable. Gravity inversions in all three scenarios illustrated that the general position of density changes caused by CO{sub 2} can be recovered, but not the absolute value of the change. Analysis of the spatial resolution and detectability limits shows that gravity measurements could, under certain circumstances, be used as a lower-cost alternative to seismic

  14. Cartan gravity, matter fields, and the gauge principle

    SciTech Connect (OSTI)

    Westman, Hans F.; Zlosnik, Tom G.

    2013-07-15

    Gravity is commonly thought of as one of the four force fields in nature. However, in standard formulations its mathematical structure is rather different from the YangMills fields of particle physics that govern the electromagnetic, weak, and strong interactions. This paper explores this dissonance with particular focus on how gravity couples to matter from the perspective of the Cartan-geometric formulation of gravity. There the gravitational field is represented by a pair of variables: (1) a contact vector V{sup A} which is geometrically visualized as the contact point between the spacetime manifold and a model spacetime being rolled on top of it, and (2) a gauge connection A{sub ?}{sup AB}, here taken to be valued in the Lie algebra of SO(2,3) or SO(1,4), which mathematically determines how much the model spacetime is rotated when rolled. By insisting on two principles, the gauge principle and polynomial simplicity, we shall show how one can reformulate matter field actions in a way that is harmonious with Cartans geometric construction. This yields a formulation of all matter fields in terms of first order partial differential equations. We show in detail how the standard second order formulation can be recovered. In particular, the Hodge dual, which characterizes the structure of bosonic field equations, pops up automatically. Furthermore, the energymomentum and spin-density three-forms are naturally combined into a single object here denoted the spin-energymomentum three-form. Finally, we highlight a peculiarity in the mathematical structure of our first-order formulation of YangMills fields. This suggests a way to unify a U(1) gauge field with gravity into a SO(1,5)-valued gauge field using a natural generalization of Cartan geometry in which the larger symmetry group is spontaneously broken down to SO(1,3)U(1). The coupling of this unified theory to matter fields and possible extensions to non-Abelian gauge fields are left as open questions

  15. Key Management Challenges in Smart Grid

    SciTech Connect (OSTI)

    Sheldon, Frederick T; Duren, Mike

    2012-01-01

    Agenda Awarded in February 2011 Team of industry and research organizations Project Objectives Address difficult issues Complexity Diversity of systems Scale Longevity of solution Participate in standards efforts and working groups Develop innovative key management solutions Modeling and simulation ORNL Cyber Security Econometric Enterprise System Demonstrate effectiveness of solution Demonstrate scalability

  16. Multi-gravity separator: an alternate gravity concentrator to process coal fines

    SciTech Connect (OSTI)

    Majumder, A.K.; Bhoi, K.S.; Barnwal, J.P.

    2007-08-15

    The multi-gravity separator (MGS) is a novel piece of equipment for the separation of fine and ultra-fine minerals. However, the published literature does not demonstrate its use in the separation of coal fines. Therefore, an attempt was made to study the effects of different process variables on the performance of an MGS for the beneficiation of coal fines. The results obtained from this study revealed that among the parameters studied, drum rotation and feed solids concentration play dominating roles in controlling the yield and ash content of the clean coal. Mathematical modeling equations that correlate the variables studied and the yield and ash contents of the clean coal were developed to predict the performance of an MGS under different operating and design conditions. The entire exercise revealed that the MGS could produce a clean coal with an ash content of 14.67% and a yield of 71.23% from a feed coal having an ash content of 24.61 %.

  17. Identification of Key Barriers in Workforce Development

    SciTech Connect (OSTI)

    2008-03-31

    This report documents the identification of key barriers in the development of an adequate national security workforce as part of the National Security Preparedness Project, being performed under a Department of Energy/National Nuclear Security Administration grant. Many barriers exist that prevent the development of an adequate number of propertly trained national security personnel. Some barriers can be eliminated in a short-term manner, whereas others will involve a long-term strategy that takes into account public policy.

  18. Key Issues in Tribal Energy Development

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Key Issues in Tribal Energy Development Common Issues, Causes and Solutions Douglas C. MacCourt, Ater Wynne LLP Chair Chair, Executive Committee Indian Law Practice Group Indian Law Section Ater Wynne LLP Oregon State Bar Association dcm@aterwynne.com www.aterwynne.com US DOE Tribal Energy Program/NREL Denver, Colorado October 25-28, 2010 Overview of Presentation * Overview of Handbook * A note on Alaska * Common development issues and solutions 1. Finding Early Stage Risk Capital * Necessary

  19. Key Renewable Energy Opportunities for Oklahoma Tribes

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    KEY RENEWABLE ENERGY OPPORTUNITIES FOR OKLAHOMA TRIBES August 13, 2012 COX CONVENTION CENTER 100 West Sheridan Avenue, Oklahoma City, OK 73102 (405) 602-8500 The fifth in a series of planned U.S. DOE Office of Indian Energy-sponsored strategic energy development & investment forums, this forum is designed to give Oklahoma tribal leaders the opportunity to receive the latest updates on DOE's energy development efforts in Indian Country. The Forum will provide a venue for tribal leaders to

  20. Milling of key slots on long shafts

    SciTech Connect (OSTI)

    Agadzhanyan, R.A.; Bogdanenko, Yu.G.

    1987-03-01

    The authors look for and test methods and tool materials for milling key slots into rod pump shafts made of steel-03KH14N7V and K Monel alloy which not only increase the precision of the milling process but also extend the life of the milling tool. Their test parameters include various methods for introduction of the cutting fluid into the milling process, the effect of carbonitridation of the tool material, and the productivity of the machine itself.

  1. Three key elements necessary for successful testing

    SciTech Connect (OSTI)

    Ehlig-Economides, C.A.; Hegeman, P. ); Clark, G. )

    1994-07-25

    Real-time surface readout during data acquisition, downhole shutting, and appropriate pressure gauges are three key elements for successful well tests. These elements are often overlooked in designing and implementing a successful well test. This second in a series of three articles on well testing shows how these elements affected the testing of an example well. Also reviewed are the capabilities of several new testing tools and techniques.

  2. Key Physical Mechanisms in Nanostructured Solar Cells

    SciTech Connect (OSTI)

    Dr Stephan Bremner

    2010-07-21

    The objective of the project was to study both theoretically and experimentally the excitation, recombination and transport properties required for nanostructured solar cells to deliver energy conversion efficiencies well in excess of conventional limits. These objectives were met by concentrating on three key areas, namely, investigation of physical mechanisms present in nanostructured solar cells, characterization of loss mechanisms in nanostructured solar cells and determining the properties required of nanostructured solar cells in order to achieve high efficiency and the design implications.

  3. New Security Results on Encrypted Key Exchange

    SciTech Connect (OSTI)

    Bresson, Emmanuel; Chevassut, Olivier; Pointcheval, David

    2003-12-15

    Schemes for encrypted key exchange are designed to provide two entities communicating over a public network, and sharing a (short) password only, with a session key to be used to achieve data integrity and/or message confidentiality. An example of a very efficient and ''elegant'' scheme for encrypted key exchange considered for standardization by the IEEE P1363 Standard working group is AuthA. This scheme was conjectured secure when the symmetric-encryption primitive is instantiated via either a cipher that closely behaves like an ''ideal cipher,'' or a mask generation function that is the product of the message with a hash of the password. While the security of this scheme in the former case has been recently proven, the latter case was still an open problem. For the first time we prove in this paper that this scheme is secure under the assumptions that the hash function closely behaves like a random oracle and that the computational Diffie-Hellman problem is difficult. Furthermore, since Denial-of-Service (DoS) attacks have become a common threat we enhance AuthA with a mechanism to protect against them.

  4. Infrared lessons for ultraviolet gravity: the case of massive gravity and Born-Infeld

    SciTech Connect (OSTI)

    Jiménez, Jose Beltrán; Heisenberg, Lavinia; Olmo, Gonzalo J. E-mail: Lavinia.Heisenberg@unige.ch

    2014-11-01

    We generalize the ultraviolet sector of gravitation via a Born-Infeld action using lessons from massive gravity. The theory contains all of the elementary symmetric polynomials and is treated in the Palatini formalism. We show how the connection can be solved algebraically to be the Levi-Civita connection of an effective metric. The non-linearity of the algebraic equations yields several branches, one of which always reduces to General Relativity at low curvatures. We explore in detail a minimal version of the theory, for which we study solutions in the presence of a perfect fluid with special attention to the cosmological evolution. In vacuum we recover Ricci-flat solutions, but also an additional physical solution corresponding to an Einstein space. The existence of two physical branches remains for non-vacuum solutions and, in addition, the branch that connects to the Einstein space in vacuum is not very sensitive to the specific value of the energy density. For the branch that connects to the General Relativity limit we generically find three behaviours for the Hubble function depending on the equation of state of the fluid, namely: either there is a maximum value for the energy density that connects continuously with vacuum, or the energy density can be arbitrarily large but the Hubble function saturates and remains constant at high energy densities, or the energy density is unbounded and the Hubble function grows faster than in General Relativity. The second case is particularly interesting because it could offer an interesting inflationary epoch even in the presence of a dust component. Finally, we discuss the possibility of avoiding certain types of singularities within the minimal model.

  5. Definitions

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    has one ACH, it means that all of the air in the house will be replaced in one hour. air pollution See pollutant. airshed A geographically isolated volume of air, usually...

  6. Cosmological perturbations in non-local higher-derivative gravity

    SciTech Connect (OSTI)

    Craps, Ben; Jonckheere, Tim De; Koshelev, Alexey S. E-mail: Tim.De.Jonckheere@vub.ac.be

    2014-11-01

    We study cosmological perturbations in a non-local higher-derivative model of gravity introduced by Biswas, Mazumdar and Siegel. We extend previous work, which had focused on classical scalar perturbations around a cosine hyperbolic bounce solution, in three ways. First, we point out the existence of a Starobinsky solution in this model, which is more attractive from a phenomenological point of view (even though it has no bounce). Second, we study classical vector and tensor pertuxsxrbations. Third, we show how to quantize scalar and tensor perturbations in a de Sitter phase (for choices of parameters such that the model is ghost-free). Our results show that the model is well-behaved at this level, and are very similar to corresponding results in local f(R) models. In particular, for the Starobinsky solution of non-local higher-derivative gravity, we find the same tensor-to-scalar ratio as for the conventional Starobinsky model.

  7. Translation invariant time-dependent solutions to massive gravity

    SciTech Connect (OSTI)

    Mourad, J.; Steer, D.A. E-mail: steer@apc.univ-paris7.fr

    2013-12-01

    Homogeneous time-dependent solutions of massive gravity generalise the plane wave solutions of the linearised Fierz-Pauli equations for a massive spin-two particle, as well as the Kasner solutions of General Relativity. We show that they also allow a clear counting of the degrees of freedom and represent a simplified framework to work out the constraints, the equations of motion and the initial value formulation. We work in the vielbein formulation of massive gravity, find the phase space resulting from the constraints and show that several disconnected sectors of solutions exist some of which are unstable. The initial values determine the sector to which a solution belongs. Classically, the theory is not pathological but quantum mechanically the theory may suffer from instabilities. The latter are not due to an extra ghost-like degree of freedom.

  8. Trapping and aerogelation of nanoparticles in negative gravity hydrocarbon flames

    SciTech Connect (OSTI)

    Chakrabarty, Rajan K.; Novosselov, Igor V.; Beres, Nicholas D.; Moosmller, Hans; Sorensen, Christopher M.; Stipe, Christopher B.

    2014-06-16

    We report the experimental realization of continuous carbon aerogel production using a flame aerosol reactor by operating it in negative gravity (?g; up-side-down configuration). Buoyancy opposes the fuel and air flow forces in ?g, which eliminates convectional outflow of nanoparticles from the flame and traps them in a distinctive non-tipping, flicker-free, cylindrical flame body, where they grow to millimeter-size aerogel particles and gravitationally fall out. Computational fluid dynamics simulations show that a closed-loop recirculation zone is set up in ?g flames, which reduces the time to gel for nanoparticles by ?10{sup 6}?s, compared to positive gravity (upward rising) flames. Our results open up new possibilities of one-step gas-phase synthesis of a wide variety of aerogels on an industrial scale.

  9. Galileon gravity and its relevance to late time cosmic acceleration

    SciTech Connect (OSTI)

    Gannouji, Radouane; Sami, M.

    2010-07-15

    We consider the covariant Galileon gravity taking into account the third order and fourth order scalar field Lagrangians L{sub 3}({pi}) and L{sub 4}({pi}), consisting of three and four {pi}'s with four and five derivatives acting on them, respectively. The background dynamical equations are set up for the system under consideration and the stability of the self-accelerating solution is demonstrated in a general setting. We extended this study to the general case of the fifth order theory. For the spherically symmetric static background, we spell out conditions for the suppression of fifth force effects mediated by the Galileon field {pi}. We study field perturbations in the fixed background and investigate the conditions for their causal propagation. We also briefly discuss metric fluctuations and derive an evolution equation for matter perturbations in Galileon gravity.

  10. Constraints on axion inflation from the weak gravity conjecture

    SciTech Connect (OSTI)

    Rudelius, Tom

    2015-09-08

    We derive constraints facing models of axion inflation based on decay constant alignment from a string-theoretic and quantum gravitational perspective. In particular, we investigate the prospects for alignment and ‘anti-alignment’ of C{sub 4} axion decay constants in type IIB string theory, deriving a strict no-go result in the latter case. We discuss the relationship of axion decay constants to the weak gravity conjecture and demonstrate agreement between our string-theoretic constraints and those coming from the ‘generalized’ weak gravity conjecture. Finally, we consider a particular model of decay constant alignment in which the potential of C{sub 4} axions in type IIB compactifications on a Calabi-Yau three-fold is dominated by contributions from D7-branes, pointing out that this model evades some of the challenges derived earlier in our paper but is highly constrained by other geometric considerations.

  11. Structure formation in a nonlocally modified gravity model

    SciTech Connect (OSTI)

    Park, Sohyun; Dodelson, Scott

    2013-01-01

    We study a nonlocally modified gravity model proposed by Deser and Woodard which gives an explanation for current cosmic acceleration. By deriving and solving the equations governing the evolution of the structure in the Universe, we show that this model predicts a pattern of growth that differs from standard general relativity (+dark energy) at the 10-30% level. These differences will be easily probed by the next generation of galaxy surveys, so the model should be tested shortly.

  12. Extended Horava gravity and Einstein-aether theory

    SciTech Connect (OSTI)

    Jacobson, Ted

    2010-05-15

    Einstein-aether theory is general relativity coupled to a dynamical, unit timelike vector. If this vector is restricted in the action to be hypersurface orthogonal, the theory is identical to the IR limit of the extension of Horava gravity proposed by Blas, Pujolas and Sibiryakov. Hypersurface orthogonal solutions of Einstein-aether theory are solutions to the IR limit of this theory, hence numerous results already obtained for Einstein-aether theory carry over.

  13. Quantum Gravity corrections and entropy at the Planck time

    SciTech Connect (OSTI)

    Basilakos, Spyros; Vagenas, Elias C.; Das, Saurya E-mail: saurya.das@uleth.ca

    2010-09-01

    We investigate the effects of Quantum Gravity on the Planck era of the universe. In particular, using different versions of the Generalized Uncertainty Principle and under specific conditions we find that the main Planck quantities such as the Planck time, length, mass and energy become larger by a factor of order 10?10{sup 4} compared to those quantities which result from the Heisenberg Uncertainty Principle. However, we prove that the dimensionless entropy enclosed in the cosmological horizon at the Planck time remains unchanged. These results, though preliminary, indicate that we should anticipate modifications in the set-up of cosmology since changes in the Planck era will be inherited even to the late universe through the framework of Quantum Gravity (or Quantum Field Theory) which utilizes the Planck scale as a fundamental one. More importantly, these corrections will not affect the entropic content of the universe at the Planck time which is a crucial element for one of the basic principles of Quantum Gravity named Holographic Principle.

  14. The observational status of Galileon gravity after Planck

    SciTech Connect (OSTI)

    Barreira, Alexandre; Li, Baojiu; Baugh, Carlton M.; Pascoli, Silvia E-mail: baojiu.li@durham.ac.uk E-mail: silvia.pascoli@durham.ac.uk

    2014-08-01

    We use the latest CMB data from Planck, together with BAO measurements, to constrain the full parameter space of Galileon gravity. We constrain separately the three main branches of the theory known as the Cubic, Quartic and Quintic models, and find that all yield a very good fit to these data. Unlike in ?CDM, the Galileon model constraints are compatible with local determinations of the Hubble parameter and predict nonzero neutrino masses at over 5? significance. We also identify that the low l part of the CMB lensing spectrum may be able to distinguish between ?CDM and Galileon models. In the Cubic model, the lensing potential deepens at late times on sub-horizon scales, which is at odds with the current observational suggestion of a positive ISW effect. Compared to ?CDM, the Quartic and Quintic models predict less ISW power in the low l region of the CMB temperature spectrum, and as such are slightly preferred by the Planck data. We illustrate that residual local modifications to gravity in the Quartic and Quintic models may render the Cubic model as the only branch of Galileon gravity that passes Solar System tests.

  15. Cosmological perturbation in f(T) gravity revisited

    SciTech Connect (OSTI)

    Izumi, Keisuke; Ong, Yen Chin E-mail: ongyenchin@member.ams.org

    2013-06-01

    We perform detailed investigation of cosmological perturbations in f(T) theory of gravity coupled with scalar field. Our work emphasizes on the way to gauge fix the theory and we examine all possible modes of perturbations up to second order. The analysis includes pseudoscalar and pseudovector modes in addition to the usual scalar, vector, and tensor modes. We find no gravitational propagating degree of freedom in the scalar, pseudoscalar, vector, as well as pseudovector modes. In addition, we find that the scalar and tensor perturbations have exactly the same form as their counterparts in usual general relativity with scalar field, except that the factor of reduced Planck mass squared M{sub pl}{sup 2}?1/(8?G) that occurs in the latter has now been replaced by an effective time-dependent gravitational coupling ?2(df/dT)|{sub T=T{sub 0}}, with T{sub 0} being the background torsion scalar. The absence of extra degrees of freedom of f(T) gravity at second order linear perturbation indicates that f(T) gravity is highly nonlinear. Consequently one cannot conclusively analyze stability of the theory without performing nonlinear analysis that can reveal the propagation of the extra degrees of freedom.

  16. Disformal theories of gravity: from the solar system to cosmology

    SciTech Connect (OSTI)

    Sakstein, Jeremy

    2014-12-01

    This paper is concerned with theories of gravity that contain a scalar coupled both conformally and disformally to matter through the metric. By systematically deriving the non-relativistic limit, it is shown that no new non-linear screening mechanisms are present beyond the Vainshtein mechanism and chameleon-like screening. If one includes the cosmological expansion of the universe, disformal effects that are usually taken to be absent can be present in the solar system. When the conformal factor is absent, fifth-forces can be screened on all scales when the cosmological field is slowly-rolling. We investigate the cosmology of these models and use local tests of gravity to place new constraints on the disformal coupling and find M?>O(eV), which is not competitive with laboratory tests. Finally, we discuss the future prospects for testing these theories and the implications for other theories of modified gravity. In particular, the Vainshtein radius of solar system objects can be altered from the static prediction when cosmological time-derivatives are non-negligible.

  17. WILSON-BAPPU EFFECT: EXTENDED TO SURFACE GRAVITY

    SciTech Connect (OSTI)

    Park, Sunkyung; Kang, Wonseok; Lee, Jeong-Eun; Lee, Sang-Gak E-mail: wskang@khu.ac.kr E-mail: sanggak@snu.ac.kr

    2013-10-01

    In 1957, Wilson and Bappu found a tight correlation between the stellar absolute visual magnitude (M{sub V} ) and the width of the Ca II K emission line for late-type stars. Here, we revisit the Wilson-Bappu relationship (WBR) to claim that the WBR can be an excellent indicator of stellar surface gravity of late-type stars as well as a distance indicator. We have measured the width (W) of the Ca II K emission line in high-resolution spectra of 125 late-type stars obtained with the Bohyunsan Optical Echelle Spectrograph and adopted from the Ultraviolet and Visual Echelle Spectrograph archive. Based on our measurement of the emission line width (W), we have obtained a WBR of M{sub V} = 33.76 - 18.08 log W. In order to extend the WBR to being a surface gravity indicator, stellar atmospheric parameters such as effective temperature (T{sub eff}), surface gravity (log g), metallicity ([Fe/H]), and micro-turbulence ({xi}{sub tur}) have been derived from self-consistent detailed analysis using the Kurucz stellar atmospheric model and the abundance analysis code, MOOG. Using these stellar parameters and log W, we found that log g = -5.85 log W+9.97 log T{sub eff} - 23.48 for late-type stars.

  18. Nonlinear structure formation in the cubic Galileon gravity model

    SciTech Connect (OSTI)

    Barreira, Alexandre; Li, Baojiu; Hellwing, Wojciech A.; Baugh, Carlton M.; Pascoli, Silvia E-mail: baojiu.li@durham.ac.uk E-mail: c.m.baugh@durham.ac.uk

    2013-10-01

    We model the linear and nonlinear growth of large scale structure in the Cubic Galileon gravity model, by running a suite of N-body cosmological simulations using the ECOSMOG code. Our simulations include the Vainshtein screening effect, which reconciles the Cubic Galileon model with local tests of gravity. In the linear regime, the amplitude of the matter power spectrum increases by ? 20% with respect to the standard ?CDM model today. The modified expansion rate accounts for ? 15% of this enhancement, while the fifth force is responsible for only ? 5%. This is because the effective unscreened gravitational strength deviates from standard gravity only at late times, even though it can be twice as large today. In the nonlinear regime (k?>0.1h Mpc{sup ?1}), the fifth force leads to only a modest increase (?<8%) in the clustering power on all scales due to the very efficient operation of the Vainshtein mechanism. Such a strong effect is typically not seen in other models with the same screening mechanism. The screening also results in the fifth force increasing the number density of halos by less than 10%, on all mass scales. Our results show that the screening does not ruin the validity of linear theory on large scales which anticipates very strong constraints from galaxy clustering data. We also show that, whilst the model gives an excellent match to CMB data on small angular scales (l?>50), the predicted integrated Sachs-Wolfe effect is in tension with Planck/WMAP results.

  19. Affine group formulation of the Standard Model coupled to gravity

    SciTech Connect (OSTI)

    Chou, Ching-Yi; Ita, Eyo; Soo, Chopin

    2014-04-15

    In this work we apply the affine group formalism for four dimensional gravity of Lorentzian signature, which is based on Klauders affine algebraic program, to the formulation of the Hamiltonian constraint of the interaction of matter and all forces, including gravity with non-vanishing cosmological constant ?, as an affine Lie algebra. We use the hermitian action of fermions coupled to gravitation and YangMills theory to find the density weight one fermionic super-Hamiltonian constraint. This term, combined with the YangMills and Higgs energy densities, are composed with Yorks integrated time functional. The result, when combined with the imaginary part of the ChernSimons functional Q, forms the affine commutation relation with the volume element V(x). Affine algebraic quantization of gravitation and matter on equal footing implies a fundamental uncertainty relation which is predicated upon a non-vanishing cosmological constant. -- Highlights: WheelerDeWitt equation (WDW) quantized as affine algebra, realizing Klauders program. WDW formulated for interaction of matter and all forces, including gravity, as affine algebra. WDW features Hermitian generators in spite of fermionic content: Standard Model addressed. Constructed a family of physical states for the full, coupled theory via affine coherent states. Fundamental uncertainty relation, predicated on non-vanishing cosmological constant.

  20. Halo model and halo properties in Galileon gravity cosmologies

    SciTech Connect (OSTI)

    Barreira, Alexandre; Li, Baojiu; Hellwing, Wojciech A.; Baugh, Carlton M.; Lombriser, Lucas; Pascoli, Silvia E-mail: baojiu.li@durham.ac.uk E-mail: llo@roe.ac.uk E-mail: silvia.pascoli@durham.ac.uk

    2014-04-01

    We investigate the performance of semi-analytical modelling of large-scale structure in Galileon gravity cosmologies using results from N-body simulations. We focus on the Cubic and Quartic Galileon models that provide a reasonable fit to CMB, SNIa and BAO data. We demonstrate that the Sheth-Tormen mass function and linear halo bias can be calibrated to provide a very good fit to our simulation results. We also find that the halo concentration-mass relation is well fitted by a power law. The nonlinear matter power spectrum computed in the halo model approach is found to be inaccurate in the mildly nonlinear regime, but captures reasonably well the effects of the Vainshtein screening mechanism on small scales. In the Cubic model, the screening mechanism hides essentially all of the effects of the fifth force inside haloes. In the case of the Quartic model, the screening mechanism leaves behind residual modifications to gravity, which make the effective gravitational strength time-varying and smaller than the standard value. Compared to normal gravity, this causes a deficiency of massive haloes and leads to a weaker matter clustering on small scales. For both models, we show that there are realistic halo occupation distributions of Luminous Red Galaxies that can match both the observed large-scale clustering amplitude and the number density of these galaxies.

  1. The role of vector fields in modified gravity scenarios

    SciTech Connect (OSTI)

    Tasinato, Gianmassimo; Koyama, Kazuya; Khosravi, Nima E-mail: kazuya.koyama@port.ac.uk

    2013-11-01

    Gravitational vector degrees of freedom typically arise in many examples of modified gravity models. We start to systematically explore their role in these scenarios, studying the effects of coupling gravitational vector and scalar degrees of freedom. We focus on set-ups that enjoy a Galilean symmetry in the scalar sector and an Abelian gauge symmetry in the vector sector. These symmetries, together with the requirement that the equations of motion contain at most two space-time derivatives, only allow for a small number of operators in the Lagrangian for the gravitational fields. We investigate the role of gravitational vector fields for two broad classes of phenomena that characterize modified gravity scenarios. The first is self-acceleration: we analyze in general terms the behavior of vector fluctuations around self-accelerating solutions, and show that vanishing kinetic terms of vector fluctuations lead to instabilities on cosmological backgrounds. The second phenomenon is the screening of long range fifth forces by means of Vainshtein mechanism. We show that if gravitational vector fields are appropriately coupled to a spherically symmetric source, they can play an important role for defining the features of the background solution and the scale of the Vainshtein radius. Our general results can be applied to any concrete model of modified gravity, whose low-energy vector and scalar degrees of freedom satisfy the symmetry requirements that we impose.

  2. Geological model for oil gravity variations in Oriente Basin, Ecuador

    SciTech Connect (OSTI)

    Dashwood, M.F.; Abbotts, I.L.

    1988-01-01

    The Oriente basin is one of the major productive Subandean basins. Most of the fields produce 29/sup 0/-33/sup 0/ API paraffinic oils, but oils have been discovered with gravities ranging from 10/sup 0/to 35/sup 0/ API. All the oils have been recovered from multiple middle to Late Cretaceous sandstone reservoirs (Hollin and Napo Formations). Wells display a variety of oil gravities by reservoir. The origin of the Oriente oils is problematical and controversial, but structural, geochemical, and well evidence suggest a vast oil kitchen west of the present Andean foothills that was mature for oil generation by at least early Tertiary. Oil analyses indicate a single family of oils is present. Oil gravity variations can be explained systematically in terms of the various alteration processes suffered by the oil in each reservoir. Intermittent early Andean uplift (latest Cretaceous to Mid-Eocene) resulted in biodegradation and water-washing of oils, particularly in the uppermost Napo reservoirs. The main Andean orogeny (Pliocene) uplifted the Hollin reservoir to outcrop in the west, and tilted the basin down to the south. This movement resulted in water washing or flushing of the Hollin aquifer and a phase of northward remigration of oil. Late Andean structures postdated primary oil migration. Almost all structures displaying growth during the Late Cretaceous to early Eocene have been oil bearing, but some, particularly those located on the present-day basin flanks, were later severely biodegraded or breached.

  3. Stability of spherically symmetric solutions in modified theories of gravity

    SciTech Connect (OSTI)

    Seifert, Michael D.

    2007-09-15

    In recent years, a number of alternative theories of gravity have been proposed as possible resolutions of certain cosmological problems or as toy models for possible but heretofore unobserved effects. However, the implications of such theories for the stability of structures such as stars have not been fully investigated. We use our 'generalized variational principle', described in a previous work [M. D. Seifert and R. M. Wald, Phys. Rev. D 75, 084029 (2007)], to analyze the stability of static spherically symmetric solutions to spherically symmetric perturbations in three such alternative theories: Carroll et al.'s f(R) gravity, Jacobson and Mattingly's 'Einstein-aether theory', and Bekenstein's TeVeS theory. We find that in the presence of matter, f(R) gravity is highly unstable; that the stability conditions for spherically symmetric curved vacuum Einstein-aether backgrounds are the same as those for linearized stability about flat spacetime, with one exceptional case; and that the 'kinetic terms' of vacuum TeVeS theory are indefinite in a curved background, leading to an instability.

  4. Dust gravitational drift wave in complex plasma under gravity

    SciTech Connect (OSTI)

    Salahshoor, M. Niknam, A. R.

    2014-12-15

    The dispersion relation of electrostatic waves in a complex plasma under gravity is presented. It is assumed that the waves propagate parallel to the external fields. The effects of weak electric field, neutral drag force, and ion drag force are also taken into account. The dispersion relation is numerically examined in an appropriate parameter space in which the gravity plays the dominant role in the dynamics of microparticles. The numerical results show that, in the low pressure complex plasma under gravity, a low frequency drift wave can be developed in the long wavelength limit. The stability state of this wave is switched at a certain critical wavenumber in such a way that the damped mode is transformed into a growing one. Furthermore, the influence of the external fields on the dispersion properties is analyzed. It is shown that the wave instability is essentially due to the electrostatic streaming of plasma particles. It is also found that by increasing the electric field strength, the stability switching occurs at smaller wavenumbers.

  5. Fermilab | Science | Particle Physics | Key Discoveries

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Key Discoveries Fermilab produced its first high-energy particle beam on March 1, 1972. Since then hundreds of experiments have used Fermilab's accelerators to study matter at ever smaller scales and its detectors to study the universe at great distances. Here an overview of the top achievements so far. Discovery of the Higgs boson Discovery of the top quark Discovery of the bottom quark Observation of tau neutrino Discovery of a quasar at a distance of 27 billion light-years Observation of

  6. Cryptographic Key Management and Critical Risk Assessment

    SciTech Connect (OSTI)

    Abercrombie, Robert K

    2014-05-01

    The Department of Energy Office of Electricity Delivery and Energy Reliability (DOE-OE) CyberSecurity for Energy Delivery Systems (CSEDS) industry led program (DE-FOA-0000359) entitled "Innovation for Increasing CyberSecurity for Energy Delivery Systems (12CSEDS)," awarded a contract to Sypris Electronics LLC to develop a Cryptographic Key Management System for the smart grid (Scalable Key Management Solutions for Critical Infrastructure Protection). Oak Ridge National Laboratory (ORNL) and Sypris Electronics, LLC as a result of that award entered into a CRADA (NFE-11-03562) between ORNL and Sypris Electronics, LLC. ORNL provided its Cyber Security Econometrics System (CSES) as a tool to be modified and used as a metric to address risks and vulnerabilities in the management of cryptographic keys within the Advanced Metering Infrastructure (AMI) domain of the electric sector. ORNL concentrated our analysis on the AMI domain of which the National Electric Sector Cyber security Organization Resource (NESCOR) Working Group 1 (WG1) has documented 29 failure scenarios. The computational infrastructure of this metric involves system stakeholders, security requirements, system components and security threats. To compute this metric, we estimated the stakes that each stakeholder associates with each security requirement, as well as stochastic matrices that represent the probability of a threat to cause a component failure and the probability of a component failure to cause a security requirement violation. We applied this model to estimate the security of the AMI, by leveraging the recently established National Institute of Standards and Technology Interagency Report (NISTIR) 7628 guidelines for smart grid security and the International Electrotechnical Commission (IEC) 63351, Part 9 to identify the life cycle for cryptographic key management, resulting in a vector that assigned to each stakeholder an estimate of their average loss in terms of dollars per day of system

  7. Key rate for calibration robust entanglement based BB84 quantum key distribution protocol

    SciTech Connect (OSTI)

    Gittsovich, O.; Moroder, T.

    2014-12-04

    We apply the approach of verifying entanglement, which is based on the sole knowledge of the dimension of the underlying physical system to the entanglement based version of the BB84 quantum key distribution protocol. We show that the familiar one-way key rate formula holds already if one assumes the assumption that one of the parties is measuring a qubit and no further assumptions about the measurement are needed.

  8. Method for encryption and transmission of digital keying data

    DOE Patents [OSTI]

    Mniszewski, Susan M.; Springer, Edward A.; Brenner, David P.

    1988-01-01

    A method for the encryption, transmission, and subsequent decryption of digital keying data. The method utilizes the Data Encryption Standard and is implemented by means of a pair of apparatus, each of which is selectable to operate as either a master unit or remote unit. Each unit contains a set of key encryption keys which are indexed by a common indexing system. The master unit operates upon command from the remote unit to generate a data encryption key and encrypt the data encryption key using a preselected key encryption key. The encrypted data encryption key and an index designator are then downloaded to the remote unit, where the data encryption key is decrypted for subsequent use in the encryption and transmission data. Downloading of the encrypted data encryption key enables frequent change of keys without requiring manual entry or storage of keys at the remote unit.

  9. TEC Working Group Topic Groups Tribal Key Documents | Department...

    Office of Environmental Management (EM)

    Key Documents TEC Working Group Topic Groups Tribal Key Documents Key Documents Tribal Discussions on Grant Program (56.04 KB) Native American Map (731.69 KB) Task Plan 1 - Tribal ...

  10. TEC Working Group Topic Groups Security Key Documents | Department...

    Office of Environmental Management (EM)

    Key Documents TEC Working Group Topic Groups Security Key Documents Key Documents Security TG Work Plan August 7, 2006 (24.31 KB) Security Lessons Learned Document August 2, 2006 ...

  11. Definition and Policy | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Definition and Policy Definition and Policy Definition Environmental justice is the fair treatment and meaningful involvement of all people-regardless of race, ethnicity, income, or education level-in environmental decision making. Environmental justice programs promote the protection of human health and the environment, empowerment via public participation, and the dissemination of relevant information to inform and educate affected communities. DOE environmental justice programs are designed

  12. Cooling Towers: Understanding Key Components of Cooling Towers...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Cooling Towers: Understanding Key Components of Cooling Towers and How to Improve Water Efficiency Cooling Towers: Understanding Key Components of Cooling Towers and How to Improve ...

  13. Keys to Successful Quality Assurance and Quality Control Programs...

    Office of Environmental Management (EM)

    Keys to Successful Quality Assurance and Quality Control Programs (101) Keys to Successful Quality Assurance and Quality Control Programs (101) January 28...

  14. Road Blocks Yield Key Information about a Catalyst | The Ames...

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Road Blocks Yield Key Information about a Catalyst Researchers systematically blocked key chemical reaction pathways to get unambiguous information about how carbon-nitrogen bonds ...

  15. Focus Series: Program Finds Community "Readiness" Is the Key...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Program Finds Community "Readiness" Is the Key to More Retrofits Focus Series: Program Finds Community "Readiness" Is the Key to More Retrofits Focus Series: Program Finds ...

  16. Key Publications - Natural Gas Regulation | Department of Energy

    Energy Savers

    Services Natural Gas Regulation Key Publications - Natural Gas Regulation Key Publications - Natural Gas Regulation Natural Gas Imports and Exports - Quarterly Reports ...

  17. Technology Key to Harnessing Natural Gas Potential | Department...

    Energy Savers

    Key to Harnessing Natural Gas Potential Technology Key to Harnessing Natural Gas Potential July 18, 2012 - 3:52pm Addthis Deputy Secretary Daniel Poneman tours Proinlosa Energy ...

  18. Midstream Infrastructure Improvements Key to Realizing Full Potential...

    Energy Savers

    Midstream Infrastructure Improvements Key to Realizing Full Potential of Domestic Natural Gas Midstream Infrastructure Improvements Key to Realizing Full Potential of Domestic ...

  19. Self-Referenced Continuous-Variable Quantum Key Distribution...

    Office of Scientific and Technical Information (OSTI)

    Self-Referenced Continuous-Variable Quantum Key Distribution Protocol Citation Details In-Document Search Title: Self-Referenced Continuous-Variable Quantum Key Distribution ...

  20. Keys to Successful Quality Assurance and Quality Control Programs...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Keys to Successful Quality Assurance and Quality Control Programs (101) Keys to Successful Quality Assurance and Quality Control Programs (101) Better Buildings Residential Network ...

  1. 2015 Key Wind Program and National Laboratory Accomplishments

    Energy Savers

    Key Wind Program and National Laboratory Accomplishments 2015 Key Wind Program and National Laboratory Accomplishments | 1 | Powering the Energy Revolution through Wind Evolution ...

  2. Energy: Critical Infrastructure and Key Resources Sector-Specific...

    Energy Savers

    Energy: Critical Infrastructure and Key Resources Sector-Specific Plan as input to the National Infrastructure Protection Plan (Redacted) Energy: Critical Infrastructure and Key ...

  3. Spotlight on Key Program Strategies from the Better Buildings...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Spotlight on Key Program Strategies from the Better Buildings Neighborhood Program, Final Evaluation Volume 6 Spotlight on Key Program Strategies from the Better Buildings Neighborhood ...

  4. Key Renewable Energy Opportunities for Oklahoma Tribes | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Key Renewable Energy Opportunities for Oklahoma Tribes Key Renewable Energy Opportunities for Oklahoma Tribes August 13, 2012 Oklahoma City, Oklahoma Cox Convention Center The...

  5. Physicists in China Nail a Key Neutrino Measurement (Science...

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    in China Nail a Key Neutrino Measurement (Science) External Link: http:news.sciencemag.orgsciencenow201203physicists-in-china-nail-a-key.htm... By jlabadmin on Thu, ...

  6. Turbulence may be key to "fast magnetic reconnection" mystery

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Turbulence may be key to "fast magnetic reconnection" mystery Turbulence may be key to "fast magnetic reconnection" mystery The new research could lead to better understanding of ...

  7. 2015 Key Water Power Program and National Laboratory Accomplishments...

    Energy.gov (indexed) [DOE]

    Water Power Program and National Laboratory Accomplishments 2015 Key Water Power Program and National Laboratory Accomplishments | 1 | 2015 Key Water Power Program and National ...

  8. Energy Critical Infrastructure and Key Resources Sector-Specific...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Energy Critical Infrastructure and Key Resources Sector-Specific Plan as input to the National Infrastructure Protection Plan (Redacted) Energy Critical Infrastructure and Key ...

  9. Energy-Intensive Processes Portfolio: Addressing Key Energy Challenges...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Energy-Intensive Processes Portfolio: Addressing Key Energy Challenges Across U.S. Industry Energy-Intensive Processes Portfolio: Addressing Key Energy Challenges Across U.S. ...

  10. PEM Fuel Cell Technology, Key Research Needs and Approaches ...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Technology, Key Research Needs and Approaches (Presentation) PEM Fuel Cell Technology, Key Research Needs and Approaches (Presentation) Presented at the DOE Fuel Cell ...

  11. Communication Is Key to Packaging and Transportation Safety and...

    Energy Savers

    Communication Is Key to Packaging and Transportation Safety and Compliance Communication Is Key to Packaging and Transportation Safety and Compliance Presentation made by Steve ...

  12. GE Key Partner in Innovation Institutes | GE Global Research

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    GE Is Key Partner in Manufacturing Innovation Institutes Click to email this to a friend ... GE Is Key Partner in Manufacturing Innovation Institutes GE Global Research ...

  13. Template:Definition | Open Energy Information

    Open Energy Information (Open El) [EERE & EIA]

    and spins the blades of a turbine, which, when connected to a generator, generates electricity. Other definitions:Wikipedia Reegle List of existing terms:...

  14. Cal. PRC Section 21065 - Environmental Quality Definitions |...

    Open Energy Information (Open El) [EERE & EIA]

    search OpenEI Reference LibraryAdd to library Legal Document- StatuteStatute: Cal. PRC Section 21065 - Environmental Quality DefinitionsLegal Abstract Contains...

  15. Zero Energy Building Policies and Definitions

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    ... to balance site energy usage with PV - Calculated with national average conversion factors * Recognizes that the focus of ZEB definitions is on the building, not the energy ...

  16. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    ... as base gasolines for other oxygenated blends (commonly referred to as the "Sun" waiver). ... For definitions of related energy terms, refer to the EIA Energy Glossary. Sources Energy ...

  17. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    ... as base gasolines for other oxygenated blends (commonly referred to as the "Sun" waiver). ... For definitions of related energy terms, refer to the EIA Energy Glossary. Sources Crude ...

  18. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    ... as base gasolines for other oxygenated blends (commonly referred to as the "Sun" waiver). ... For definitions of related energy terms, refer to the EIA Energy Glossary. Sources ...

  19. Low-Power Public Key Cryptography

    SciTech Connect (OSTI)

    BEAVER,CHERYL L.; DRAELOS,TIMOTHY J.; HAMILTON,VICTORIA A.; SCHROEPPEL,RICHARD C.; GONZALES,RITA A.; MILLER,RUSSELL D.; THOMAS,EDWARD V.

    2000-11-01

    This report presents research on public key, digital signature algorithms for cryptographic authentication in low-powered, low-computation environments. We assessed algorithms for suitability based on their signature size, and computation and storage requirements. We evaluated a variety of general purpose and special purpose computing platforms to address issues such as memory, voltage requirements, and special functionality for low-powered applications. In addition, we examined custom design platforms. We found that a custom design offers the most flexibility and can be optimized for specific algorithms. Furthermore, the entire platform can exist on a single Application Specific Integrated Circuit (ASIC) or can be integrated with commercially available components to produce the desired computing platform.

  20. Constraints on a f(R) gravity dark energy model with early scaling evolution

    SciTech Connect (OSTI)

    Park, Chan-Gyung; Hwang, Jai-chan; Noh, Hyerim E-mail: jchan@knu.ac.kr

    2011-09-01

    The modified gravity with f(R) = R{sup 1+?} (? > 0) allows a scaling solution where the energy density of gravity sector follows the energy density of the dominant fluid. We present initial conditions of background and perturbation variables during the scaling evolution regime in the modified gravity. As a possible dark energy model we consider a gravity with a form f(R) = R{sup 1+?}+qR{sup ?n} (?1 < n ? 0) where the second term drives the late-time acceleration. We show that our f(R) gravity parameters are very sensitive to the baryon perturbation growth and baryon density power spectrum, and present observational constraints on the model parameters. We consider full perturbations of f(R) gravity. Our analysis suggests that only the parameter space extremely close to the ?CDM model is allowed with ??<5 10{sup ?6} and n?>?10{sup ?4}.

  1. Integration of Full Tensor Gravity and ZTEM Passive Low Frequency EM

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Instruments for Simultaneous Data Acquisition | Department of Energy Full Tensor Gravity and ZTEM Passive Low Frequency EM Instruments for Simultaneous Data Acquisition Integration of Full Tensor Gravity and ZTEM Passive Low Frequency EM Instruments for Simultaneous Data Acquisition Integration of Full Tensor Gravity and ZTEM Passive Low Frequency EM Instruments for Simultaneous Data Acquisition presentation at the April 2013 peer review meeting held in Denver, Colorado.

  2. SECTION L -ATTACHMENT B - LISTING OF KEY PERSONNEL

    National Nuclear Security Administration (NNSA)

    H SECTION J APPENDIX H KEY PERSONNEL [Note: To be inserted by the Contracting Officer after

  3. Ground Gravity Survey At Blue Mountain Geothermal Area (U.S....

    Open Energy Information (Open El) [EERE & EIA]

    search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground Gravity Survey At Blue Mountain Geothermal Area (U.S. Geological Survey, 2012) Exploration Activity Details...

  4. DETECTING GRAVITY MODES IN THE SOLAR {sup 8} B NEUTRINO FLUX

    SciTech Connect (OSTI)

    Lopes, Ildio; Turck-Chize, Sylvaine E-mail: ilopes@uevora.pt

    2014-09-10

    The detection of gravity modes produced in the solar radiative zone has been a challenge in modern astrophysics for more than 30yr and their amplitude in the core is not yet determined. In this Letter, we develop a new strategy to look for standing gravity modes through solar neutrino fluxes. We note that due to a resonance effect, the gravity modes of low degree and low order have the largest impact on the {sup 8} B neutrino flux. The strongest effect is expected to occur for the dipole mode with radial order 2, corresponding to periods of about 1.5 hr. These standing gravity waves produce temperature fluctuations that are amplified by a factor of 170 in the boron neutrino flux for the corresponding period, in consonance with the gravity modes. From current neutrino observations, we determine that the maximum temperature variation due to the gravity modes in the Sun's core is smaller than 5.8 10{sup 4}. This study clearly shows that due to their high sensitivity to the temperature, the {sup 8} B neutrino flux time series is an excellent tool to determine the properties of gravity modes in the solar core. Moreover, if gravity mode footprints are discovered in the {sup 8} B neutrino flux, this opens a new line of research to probe the physics of the solar core as non-standing gravity waves of higher periods cannot be directly detected by helioseismology but could leave their signature on boron neutrino or on other neutrino fluxes.

  5. Ground Gravity Survey At U.S. West Region (Aiken & Ander, 1981...

    Open Energy Information (Open El) [EERE & EIA]

    and southern Colorado References Carlos L.V. Aiken, Mark E. Ander (1981) A Regional Strategy For Geothermal Exploration With Emphasis On Gravity And Magnetotellurics Additional...

  6. Ground Gravity Survey At Maui Area (DOE GTP) | Open Energy Information

    Open Energy Information (Open El) [EERE & EIA]

    Maui Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground Gravity Survey At Maui Area (DOE GTP) Exploration Activity Details...

  7. Reduced Gravity Education Flight Opportunity for Students at Minority Serving Institutions

    Office of Energy Efficiency and Renewable Energy (EERE)

    NASA is offering undergraduate students from Minority Serving Institutions an opportunity to test experiments in microgravity aboard NASA's reduced gravity aircraft.

  8. Ground Gravity Survey At Raft River Geothermal Area (1957-1961...

    Open Energy Information (Open El) [EERE & EIA]

    search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground Gravity Survey At Raft River Geothermal Area (1957-1961) Exploration Activity Details Location Raft River...

  9. Ground Gravity Survey At Cove Fort Area (Toksoz, Et Al, 2010...

    Open Energy Information (Open El) [EERE & EIA]

    Exploration Activity Details Location Cove Fort Geothermal Area Exploration Technique Ground Gravity Survey Activity Date Usefulness not indicated DOE-funding Unknown Notes We...

  10. Ground Gravity Survey At San Emidio Desert Area (DOE GTP) | Open...

    Open Energy Information (Open El) [EERE & EIA]

    Emidio Desert Area (DOE GTP) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground Gravity Survey At San Emidio Desert Area (DOE GTP)...

  11. Ground Gravity Survey At Salt Wells Area (Bureau of Land Management...

    Open Energy Information (Open El) [EERE & EIA]

    2009) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Exploration Activity: Ground Gravity Survey At Salt Wells Area (Bureau of Land Management, 2009) Exploration...

  12. Fusion Simulation Program Definition. Final report

    SciTech Connect (OSTI)

    Cary, John R.

    2012-09-05

    We have completed our contributions to the Fusion Simulation Program Definition Project. Our contributions were in the overall planning with concentration in the definition of the area of Software Integration and Support. We contributed to the planning of multiple meetings, and we contributed to multiple planning documents.

  13. Flavor Universal Resonances and Warped Gravity | Argonne National

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Laboratory Flavor Universal Resonances and Warped Gravity December 6, 2016 3:15PM to 4:15PM Presenter Sungwoo Hong, Maryland University Location Building 362, Room E188 Type Seminar Series HEP Theory Seminar Abstract: Warped higher-dimensional compactifications with "bulk" standard model, or their AdS/CFT dual as the purely 4D scenario of Higgs compositeness and partial compositeness, offer an elegant approach to resolving the electroweak hierarchy problem as well as the origins of

  14. Wheeler-DeWitt equation for brane gravity

    SciTech Connect (OSTI)

    Gusin, Pawel

    2008-03-15

    We consider gravity in the system consisting of the Bogomol'nyi-Prasad-Sommerfield (BPS) D3-brane embedded in a flat background geometry, produced by the solutions of supergravity. The effective action for this system is represented by the sum of the Hilbert-Einstein and Dirac-Born-Infeld actions. We derive the Wheeler-DeWitt equation for this system and obtain analytical solutions in some special cases. We also calculate the tunneling probability from the Planckian size of the D3-brane to the classical regime.

  15. Large Searching for Higher Dimensional Gravity with Neutron Experiments

    SciTech Connect (OSTI)

    Frank, Alejandro

    2007-10-26

    N-dimensional gravity is analized in the context of recent work on 'large' supplementary dimensions. A simple derivation of the compactification radii for additional dimensions in the universe is made, as a function of the Planck and the electro-weak scales. It is argued that the modified gravitational force would give rise to effects that might be within the detection range of dedicated neutron experiments. An analysis suggests that neutron scattering off atomic nuclei with null spin may provide an experimental test for these ideas.

  16. Translation invariant time-dependent massive gravity: Hamiltonian analysis

    SciTech Connect (OSTI)

    Mourad, Jihad; Steer, Danile A.; Noui, Karim E-mail: karim.noui@lmpt.univ-tours.fr

    2014-09-01

    The canonical structure of the massive gravity in the first order moving frame formalism is studied. We work in the simplified context of translation invariant fields, with mass terms given by general non-derivative interactions, invariant under the diagonal Lorentz group, depending on the moving frame as well as a fixed reference frame. We prove that the only mass terms which give 5 propagating degrees of freedom are the dRGT mass terms, namely those which are linear in the lapse. We also complete the Hamiltonian analysis with the dynamical evolution of the system.

  17. Self-gravity in neutrino-dominated accretion disks

    SciTech Connect (OSTI)

    Liu, Tong; Yu, Xiao-Fei; Gu, Wei-Min; Lu, Ju-Fu

    2014-08-10

    We present the effects of self-gravity on the vertical structure and neutrino luminosity of the neutrino-dominated accretion disks in cylindrical coordinates. It is found that significant changes of the structure appear in the outer region of the disk, especially for high accretion rates (e.g., ? 1 M{sub ?} s{sup 1}), and thus cause the slight increase in the neutrino luminosity. Furthermore, the gravitational instability of the disk is reviewed by the vertical distribution of the Toomre parameter, which may account for the late-time flares in gamma-ray bursts and the extended emission in short-duration gamma-ray bursts.

  18. Condensation during gravity driven ECC: Experiments with PACTEL

    SciTech Connect (OSTI)

    Munther, R.; Kalli, H.; Kouhia, J.

    1995-09-01

    This paper provides the results of the second series of gravity driven emergency core cooling (ECC) experiments with PACTEL (Parallel Channel Test Loop). The simulated accident was a small break loss-of-coolant accident (SBLOCA) with a break in a cold leg. The ECC flow was provided from a core makeup tank (CMT) located at a higher elevation than the main part of the primary system. The CMT was pressurized with pipings from the pressurizer and a cold leg. The tests indicated that steam condensation in the CMT can prevent ECC and lead to core uncovery.

  19. Properties of solar gravity mode signals in total irradiance observations

    SciTech Connect (OSTI)

    Kroll, R.J.; Chen, J.; Hill, H.A.

    1988-01-01

    Further evidence has been found that a significant fraction of the gravity mode power density in the total irradiance observations appears in sidebands of classified eigenfrequencies. These sidebands whose amplitudes vary from year to year are interpreted as harmonics of the rotational frequencies of the nonuniform solar surface. These findings are for non axisymmetric modes and corroborate the findings of Kroll, Hill and Chen for axisymmetric modes. It is demonstrated the the generation of the sidebands lifts the usual restriction on the parity of the eigenfunctions for modes detectable in total irradiance observations. 14 refs.

  20. Noncommutative scalar field minimally coupled to nonsymmetric gravity

    SciTech Connect (OSTI)

    Kouadik, S.; Sefai, D.

    2012-06-27

    We construct a non-commutative non symmetric gravity minimally coupled model (the star product only couples matter). We introduce the action for the system considered namely a non-commutative scalar field propagating in a nontrivial gravitational background. We expand the action in powers of the anti-symmetric field and the graviton to second order adopting the assumption that the scalar is weekly coupled to the graviton. We compute the one loop radiative corrections to the self-energy of a scalar particle.

  1. Is Cosmic Acceleration Telling Us Something About Gravity?

    ScienceCinema (OSTI)

    Trodden, Mark [Syracuse University, Syracuse, New York, United States

    2016-07-12

    Among the possible explanations for the observed acceleration of the universe, perhaps the boldest is the idea that new gravitational physics might be the culprit. In this colloquium I will discuss some of the challenges of constructing a sensible phenomenological extension of General Relativity, give examples of some candidate models of modified gravity and survey existing observational constraints on this approach. I will conclude by discussing how we might hope to distinguish between modifications of General Relativity and dark energy as competing hypotheses to explain cosmic acceleration.

  2. Finite-key security analysis of quantum key distribution with imperfect light sources

    DOE PAGES-Beta [OSTI]

    Mizutani, Akihiro; Curty, Marcos; Lim, Charles Ci Wen; Imoto, Nobuyuki; Tamaki, Kiyoshi

    2015-09-09

    In recent years, the gap between theory and practice in quantum key distribution (QKD) has been significantly narrowed, particularly for QKD systems with arbitrarily flawed optical receivers. The status for QKD systems with imperfect light sources is however less satisfactory, in the sense that the resulting secure key rates are often overly dependent on the quality of state preparation. This is especially the case when the channel loss is high. Very recently, to overcome this limitation, Tamaki et al proposed a QKD protocol based on the so-called 'rejected data analysis', and showed that its security in the limit of infinitelymore » long keys is almost independent of any encoding flaw in the qubit space, being this protocol compatible with the decoy state method. Here, as a step towards practical QKD, we show that a similar conclusion is reached in the finite-key regime, even when the intensity of the light source is unstable. More concretely, we derive security bounds for a wide class of realistic light sources and show that the bounds are also efficient in the presence of high channel loss. Our results strongly suggest the feasibility of long distance provably secure communication with imperfect light sources.« less

  3. Finite-key security analysis of quantum key distribution with imperfect light sources

    SciTech Connect (OSTI)

    Mizutani, Akihiro; Curty, Marcos; Lim, Charles Ci Wen; Imoto, Nobuyuki; Tamaki, Kiyoshi

    2015-09-09

    In recent years, the gap between theory and practice in quantum key distribution (QKD) has been significantly narrowed, particularly for QKD systems with arbitrarily flawed optical receivers. The status for QKD systems with imperfect light sources is however less satisfactory, in the sense that the resulting secure key rates are often overly dependent on the quality of state preparation. This is especially the case when the channel loss is high. Very recently, to overcome this limitation, Tamaki et al proposed a QKD protocol based on the so-called 'rejected data analysis', and showed that its security in the limit of infinitely long keys is almost independent of any encoding flaw in the qubit space, being this protocol compatible with the decoy state method. Here, as a step towards practical QKD, we show that a similar conclusion is reached in the finite-key regime, even when the intensity of the light source is unstable. More concretely, we derive security bounds for a wide class of realistic light sources and show that the bounds are also efficient in the presence of high channel loss. Our results strongly suggest the feasibility of long distance provably secure communication with imperfect light sources.

  4. Title 40 CFR 230 Definitions - Clean Water Act | Open Energy...

    Open Energy Information (Open El) [EERE & EIA]

    RegulationRegulation: Title 40 CFR 230 Definitions - Clean Water ActLegal Abstract Sets forth regulatory definitions under the Clean Water Act including the definition of waters of...

  5. Simulating the quartic Galileon gravity model on adaptively refined meshes

    SciTech Connect (OSTI)

    Li, Baojiu; Barreira, Alexandre; Baugh, Carlton M.; Hellwing, Wojciech A.; Koyama, Kazuya; Zhao, Gong-Bo; Pascoli, Silvia E-mail: baojiu.li@durham.ac.uk E-mail: wojciech.hellwing@durham.ac.uk E-mail: silvia.pascoli@durham.ac.uk

    2013-11-01

    We develop a numerical algorithm to solve the high-order nonlinear derivative-coupling equation associated with the quartic Galileon model, and implement it in a modified version of the ramses N-body code to study the effect of the Galileon field on the large-scale matter clustering. The algorithm is tested for several matter field configurations with different symmetries, and works very well. This enables us to perform the first simulations for a quartic Galileon model which provides a good fit to the cosmic microwave background (CMB) anisotropy, supernovae and baryonic acoustic oscillations (BAO) data. Our result shows that the Vainshtein mechanism in this model is very efficient in suppressing the spatial variations of the scalar field. However, the time variation of the effective Newtonian constant caused by the curvature coupling of the Galileon field cannot be suppressed by the Vainshtein mechanism. This leads to a significant weakening of the strength of gravity in high-density regions at late times, and therefore a weaker matter clustering on small scales. We also find that without the Vainshtein mechanism the model would have behaved in a completely different way, which shows the crucial role played by nonlinearities in modified gravity theories and the importance of performing self-consistent N-body simulations for these theories.

  6. Wormholes, emergent gauge fields, and the weak gravity conjecture

    DOE PAGES-Beta [OSTI]

    Harlow, Daniel

    2016-01-20

    This paper revisits the question of reconstructing bulk gauge fields as boundary operators in AdS/CFT. In the presence of the ormhole dual to the thermo field double state of two CFTs, the existence of bulk gauge fields is in some tension with the microscopic tensor factorization of the Hilbert space. Here, I explain how this tension can be resolved by splitting the gauge field into charged constituents, and I argue that this leads to a new argument for the "principle of completeness", which states that the charge lattice of a gauge theory coupled to gravity must be fully populated. Imore » also claim that it leads to a new motivation for (and a clarification of) the "weak gravity conjecture", which I interpret as a strengthening of this principle. This setup gives a simple example of a situation where describing low-energy bulk physics in CFT language requires knowledge of high-energy bulk physics. Furthermore, this contradicts to some extent the notion of "effective conformal field theory", but in fact is an expected feature of the resolution of the black hole information problem. An analogous factorization issue exists also for the gravitational field, and I comment on several of its implications for reconstructing black hole interiors and the emergence of spacetime more generally.« less

  7. Confronting DGP braneworld gravity with cosmico observations after Planck data

    SciTech Connect (OSTI)

    Xu, Lixin

    2014-02-01

    The normal branch of Dvali-Gabadadze-Porrati braneworld gravity with brane tension is confronted by the currently available cosmic observations from the geometrical and dynamical perspectives. On the geometrical side, the type Ia supernova as standard candle, the baryon acoustic oscillation as standard ruler and the cosmic microwave background measurement from the first released 15.5 months data were used to fix the background evolutions. On the dynamical side, the redshift space distortion data will be used to determine the evolution of the matter perturbation. Through a Markov chain Monte Carlo analysis, we found the dimensionless crossover scale ?{sub r{sub c}} = 1/(4H{sup 2}{sub 0}r{sup 2}{sub c}) = 0.00183{sub ?0.00183}{sup +0.000338} in a spatially flat normal branch of Dvali-Gabadadze-Porrati braneworld. This result suggests that the crossover scale r{sub c} should be around 12H{sup ?1}{sub 0} which is consistent with the previous result r{sub c} > 3H{sup ?1}{sub 0} and greater. It also implies that the five-dimensional gravity effect is weak to be observed in H{sup ?1}{sub 0} scale.

  8. Two-dimensional gravity with a dynamical aether

    SciTech Connect (OSTI)

    Eling, Christopher; Jacobson, Ted

    2006-10-15

    We investigate the two-dimensional behavior of gravity coupled to a dynamical unit timelike vector field, i.e. ''Einstein-aether theory.'' The classical solutions of this theory in two dimensions depend on one coupling constant. When this coupling is positive the only solutions are (i) flat spacetime with constant aether (ii) de Sitter or anti-de Sitter spacetimes with a uniformly accelerated unit vector invariant under a two-dimensional subgroup of SO(2,1) generated by a boost and a null rotation, and (iii) a nonconstant curvature spacetime that has no Killing symmetries and contains singularities. In this case the sign of the curvature is determined by whether the coupling is less or greater than one. When instead the coupling is negative only solutions (i) and (iii) are present. This classical study of the behavior of Einstein-aether theory in 1+1 dimensions may provide a starting point for further investigations into semiclassical and fully quantum toy models of quantum gravity with a dynamical preferred frame.

  9. System Definition and Analysis: Power Plant Design and Layout...

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    System Definition and Analysis: Power Plant Design and Layout Citation Details In-Document Search Title: System Definition and Analysis: Power Plant Design and Layout You are ...

  10. Solution Package Scope Definition, Report 72, Salt Waste (SP...

    Office of Environmental Management (EM)

    Solution Package Scope Definition, Report 72, Salt Waste (SP 72) Solution Package Scope Definition, Report 72, Salt Waste (SP 72) This document was used to determine facts and ...

  11. Title 30 USC 1001 Geothermal Resources Definitions | Open Energy...

    Open Energy Information (Open El) [EERE & EIA]

    DefinitionsLegal Abstract Section 1001 - Definitions under Title 30: Mineral Lands and Mining, Chapter 23: Geothermal Resources of the United States Code, last amended August 8,...

  12. FOIA Frequently Requested Documents: Definitized Subcontract No.

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    ZDO-2-30628-09 | Department of Energy Definitized Subcontract No. ZDO-2-30628-09 FOIA Frequently Requested Documents: Definitized Subcontract No. ZDO-2-30628-09 FOIA Frequently Requested Documents: Definitized Subcontract No. ZDO-2-30628-09. Subcontract between Midwest Research Institute National Renewable Energy Laboratory and Evergreen Solar, Inc. Part 1 of 11 (9.85 MB) Part 2 of 11 (9.9 MB) Part 3 of 11 (9.86 MB) Part 4 of 11 (9.92 MB) Part 5 of 11 (9.89 MB) Part 6 of 11 (9.89 MB) Part 7

  13. Key management for large scale end-to-end encryption

    SciTech Connect (OSTI)

    Witzke, E.L.

    1994-07-01

    Symmetric end-to-end encryption requires separate keys for each pair of communicating confidants. This is a problem of Order N{sup 2}. Other factors, such as multiple sessions per pair of confidants and multiple encryption points in the ISO Reference Model complicate key management by linear factors. Public-key encryption can reduce the number of keys managed to a linear problem which is good for scaleability of key management, but comes with complicating issues and performance penalties. Authenticity is the primary ingredient of key management. If each potential pair of communicating confidants can authenticate data from each other, then any number of public encryption keys of any type can be communicated with requisite integrity. These public encryption keys can be used with the corresponding private keys to exchange symmetric cryptovariables for high data rate privacy protection. The Digital Signature Standard (DSS), which has been adopted by the United States Government, has both public and private components, similar to a public-key cryptosystem. The Digital Signature Algorithm of the DSS is intended for authenticity but not for secrecy. In this paper, the authors will show how the use of the Digital Signature Algorithm combined with both symmetric and asymmetric (public-key) encryption techniques can provide a practical solution to key management scaleability problems, by reducing the key management complexity to a problem of order N, without sacrificing the encryption speed necessary to operate in high performance networks.

  14. Florida Keys El Coop Assn, Inc | Open Energy Information

    Open Energy Information (Open El) [EERE & EIA]

    Keys El Coop Assn, Inc Jump to: navigation, search Name: Florida Keys El Coop Assn, Inc Place: Florida Phone Number: 305-852-2431 Website: www.fkec.com Twitter: @FLKeysElectric...

  15. 2015 Key Wind Program and National Laboratory Accomplishments...

    Energy.gov (indexed) [DOE]

    2015 Key Wind Program and National Laboratory Accomplishments 1 of 32 2015 Key Wind Program and National Laboratory Accomplishments The U.S. Department of Energy (DOE) Wind Program ...

  16. Key Activities in Wind Energy | Department of Energy

    Energy Savers

    About the Program Key Activities in Wind Energy Key Activities in Wind Energy In order to reduce the cost of wind power technologies and accelerate the deployment of wind power, ...

  17. Could Solar Energy Storage be Key for Residential Solar? | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Could Solar Energy Storage be Key for Residential Solar? Could Solar Energy Storage be Key for Residential Solar? October 26, 2010 - 4:52pm Addthis This is the silent power storage ...

  18. Solid Electrolyte: the Key for High-Voltage Lithium Batteries...

    Office of Scientific and Technical Information (OSTI)

    Solid Electrolyte: the Key for High-Voltage Lithium Batteries Citation Details In-Document Search Title: Solid Electrolyte: the Key for High-Voltage Lithium Batteries Authors: Li, ...

  19. June2010KeyEISChart.pdf | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    June2010KeyEISChart.pdf June2010KeyEISChart.pdf June2010KeyEISChart.pdf (59.25 KB) More Documents & Publications Schedules of Key Environmental Impact Statements Demonstration of a Variable Phase Turbine Power System for Low Temperature Geothermal Resources A 3D-3C Reflection Seismic Survey and Data Integration to Identify the Seismic Response of Fractures and Permeable Zones Over a Known Geothermal Resource at Soda Lake, Churchhill Co., NV

  20. 2015 Key Water Power Program and National Laboratory Accomplishments

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Slideshow | Department of Energy 2015 Key Water Power Program and National Laboratory Accomplishments Slideshow 2015 Key Water Power Program and National Laboratory Accomplishments Slideshow Addthis 2015 Key Water Power Program and National Laboratory Accomplishments Report 1 of 28 2015 Key Water Power Program and National Laboratory Accomplishments Report By accelerating the development of markets for hydropower and marine and hydrokinetic (MHK) projects, the Water Power Program is striving

  1. 2015 Key Wind Program and National Laboratory Accomplishments Slideshow |

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Department of Energy 2015 Key Wind Program and National Laboratory Accomplishments Slideshow 2015 Key Wind Program and National Laboratory Accomplishments Slideshow Addthis 2015 Key Wind Program and National Laboratory Accomplishments 1 of 32 2015 Key Wind Program and National Laboratory Accomplishments The U.S. Department of Energy (DOE) Wind Program is committed to helping the nation secure cost-competitive sources of renewable energy through the development and deployment of innovative

  2. Residential Energy Efficiency Financing: Key Elements of Program Design

    Energy.gov [DOE]

    Presents key programmatic elements and context of financing initiatives, including contractor support, rebates, quality assurance, and more.

  3. SECTION L -ATTACHMENT B - LISTING OF KEY PERSONNEL

    National Nuclear Security Administration (NNSA)

    B, Page 1 SECTION L ATTACHMENT B LISTING OF KEY PERSONNEL TITLE NAME Note: Addremove extra rows if needed...

  4. 2015 Key Water Power Program and National Laboratory Accomplishments

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Slideshow | Department of Energy 2015 Key Water Power Program and National Laboratory Accomplishments Slideshow 2015 Key Water Power Program and National Laboratory Accomplishments Slideshow 2015 Key Water Power Program and National Laboratory Accomplishments Report 1 of 28 2015 Key Water Power Program and National Laboratory Accomplishments Report By accelerating the development of markets for hydropower and marine and hydrokinetic (MHK) projects, the Water Power Program is striving to

  5. 2015 Key Wind Program and National Laboratory Accomplishments | Department

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    of Energy 2015 Key Wind Program and National Laboratory Accomplishments 2015 Key Wind Program and National Laboratory Accomplishments 2015 Key Wind Program and National Laboratory Accomplishments 1 of 32 2015 Key Wind Program and National Laboratory Accomplishments The U.S. Department of Energy (DOE) Wind Program is committed to helping the nation secure cost-competitive sources of renewable energy through the development and deployment of innovative wind power technologies. By investing in

  6. Key Dates | U.S. DOE Office of Science (SC)

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Key Dates Albert Einstein Distinguished Educator Fellowship (AEF) Program Einstein Fellowship Home Eligibility Benefits Obligations How to Apply Key Dates Frequently Asked Questions Fellows Central Contact WDTS Home Key Dates Print Text Size: A A A FeedbackShare Page Key Dates for the 2017-2018 AEF Program Application process. On-line Application Opens August 17, 2016 Application Deadline 8:00pm EST November 17, 2016 Application Review 8 - 9 weeks Notification to Semi-Finalists [Travel

  7. Key Dates | U.S. DOE Office of Science (SC)

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Key Dates DOE Office of Science Graduate Student Research (SCGSR) Program SCGSR Home Eligibility Benefits Participant Obligations How to Apply Information for Laboratory Scientists and Thesis Advisors Key Dates Frequently Asked Questions Contact WDTS Home Key Dates Print Text Size: A A A FeedbackShare Page The SCGSR Program Key Dates are noted below. At the submission deadline (shown in red), the online application system will close after which no additional materials will be accepted. The

  8. Fuel Cell Technologies Office Key Activities | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    About the Fuel Cell Technologies Office » Fuel Cell Technologies Office Key Activities Fuel Cell Technologies Office Key Activities The Fuel Cell Technologies Office conducts work in several key areas to advance the development and commercialization of hydrogen and fuel cell technologies. Research, Development, and Demonstration Key areas of research, development, and demonstration (RD&D) include the following: Fuel Cell R&D, which seeks to improve the durability, reduce the cost, and

  9. Validation of Innovative Exploration Technologies for Newberry Volcano: Raw data used to prepare the Gravity Report by Zonge 2012

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Jaffe, Todd

    Validation of Innovative Exploration Technologies for Newberry Volcano: Raw data used to prepare the Gravity Report by Zonge 2012

  10. Validation of Innovative Exploration Technologies for Newberry Volcano: Raw data used to prepare the Gravity Report by Zonge 2012

    DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

    Jaffe, Todd

    2012-01-01

    Validation of Innovative Exploration Technologies for Newberry Volcano: Raw data used to prepare the Gravity Report by Zonge 2012

  11. Table Definitions, Sources, and Explanatory Notes

    Gasoline and Diesel Fuel Update

    For definitions of related energy terms, refer to the EIA Energy Glossary. Sources 1973-1978: Federal Energy Administration, Form FEA-F701-M-0, "Transfer Pricing Report." ...

  12. DOE Seeks Comment on Definition of Showerhead

    Energy.gov [DOE]

    Today the U.S. Department of Energy (DOE) published in the Federal Register an interpretive rule that sets out the Department's views on the definition of "showerhead" in 10 CFR 430.2. The...

  13. Definition of a 'Zero Net Energy' Community

    SciTech Connect (OSTI)

    Carlisle, N.; Van Geet, O.; Pless, S.

    2009-11-01

    This document provides a definition for a net zero-energy community. A community that offsets all of its energy use from renewables available within the community's built environment.

  14. Key Activities of the Geothermal Technologies Office | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    About the Geothermal Technologies Office » Key Activities of the Geothermal Technologies Office Key Activities of the Geothermal Technologies Office Key activities for the Geothermal Technologies Office (GTO) include research, development and demonstration; system validation; technology validation; strategic planning, analysis, and R&D integration. Specific activities are summarized below. Program Area Activities Enhanced Geothermal Systems (EGS) GTO conducts research, development and

  15. EIA - Natural Gas Pipeline Network - Regional Definitions

    U.S. Energy Information Administration (EIA) (indexed site)

    Definitions Map About U.S. Natural Gas Pipelines - Transporting Natural Gas based on data through 2007/2008 with selected updates Regional Definitions The regions defined in the above map are based upon the 10 Federal Regions of the U.S. Bureau of Labor Statistics. The State groupings are as follows: Northeast Region - Federal Region 1: Connecticut, Maine, Massachusetts, New Hampshire, Rhode Island, and Vermont. Federal Region 2: New Jersey, and New York. Federal Region 3:Delaware, District of

  16. INTERNAL GRAVITY WAVES IN MASSIVE STARS: ANGULAR MOMENTUM TRANSPORT

    SciTech Connect (OSTI)

    Rogers, T. M.; Lin, D. N. C.; McElwaine, J. N.; Lau, H. H. B. E-mail: lin@ucolick.org E-mail: hblau@astro.uni-bonn.de

    2013-07-20

    We present numerical simulations of internal gravity waves (IGW) in a star with a convective core and extended radiative envelope. We report on amplitudes, spectra, dissipation, and consequent angular momentum transport by such waves. We find that these waves are generated efficiently and transport angular momentum on short timescales over large distances. We show that, as in Earth's atmosphere, IGW drive equatorial flows which change magnitude and direction on short timescales. These results have profound consequences for the observational inferences of massive stars, as well as their long term angular momentum evolution. We suggest IGW angular momentum transport may explain many observational mysteries, such as: the misalignment of hot Jupiters around hot stars, the Be class of stars, Ni enrichment anomalies in massive stars, and the non-synchronous orbits of interacting binaries.

  17. Translation invariant time-dependent solutions to massive gravity II

    SciTech Connect (OSTI)

    Mourad, J.; Steer, D.A. E-mail: steer@apc.univ-paris7.fr

    2014-06-01

    This paper is a sequel to JCAP 12 (2013) 004 and is also devoted to translation-invariant solutions of ghost-free massive gravity in its moving frame formulation. Here we consider a mass term which is linear in the vielbein (corresponding to a ?{sub 3} term in the 4D metric formulation) in addition to the cosmological constant. We determine explicitly the constraints, and from the initial value formulation show that the time-dependent solutions can have singularities at a finite time. Although the constraints give, as in the ?{sub 1} case, the correct number of degrees of freedom for a massive spin two field, we show that the lapse function can change sign at a finite time causing a singular time evolution. This is very different to the ?{sub 1} case where time evolution is always well defined. We conclude that the ?{sub 3} mass term can be pathological and should be treated with care.

  18. Thermodynamic behavior of particular f(R,T)-gravity models

    SciTech Connect (OSTI)

    Sharif, M. Zubair, M.

    2013-08-15

    We investigate the thermodynamics at the apparent horizon of the FRW universe in f(R, T) theory in the nonequilibrium description. The laws of thermodynamics are discussed for two particular models of the f(R, T) theory. The first law of thermodynamics is expressed in the form of the Clausius relation T{sub h} dS-circumflex{sub h} = {delta} Q , where {delta}Q is the energy flux across the horizon and dS-circumflex is the entropy production term. Furthermore, the conditions for the generalized second law of thermodynamics to be preserved are established with the constraints of positive temperature and attractive gravity. We illustrate our results for some concrete models in this theory.

  19. The application of Raman laser in gravity measurement and metrology

    SciTech Connect (OSTI)

    Ru, Ning; Zhang, Li; Wang, Yu; Fan, Shangchun

    2014-05-27

    Atom Interferometry is proved to be a potential method for measuring the acceleration of atoms due to Gravity, we are now building a feasible system of cold atom gravimeter, it is based on the atom interferometry technology by coherently manipulating the cold atoms in a fountain (with a height of 1m) with specific Raman lasers, the cold atom wave packet is splitted, combined, and then re-splitted in the process. Then the atomic wave packet will acquire different phase because of the different evolution path. The precise acceleration can be deduced through the precision measurement of atomic interference fringes phase, and this will be a high precision standard of acceleration. At present, the preparation of Raman laser and the precise control of the laser Frequency have been finished, and they have been proved to meet the requirements of the experiment.

  20. Vector field models of modified gravity and the dark sector

    SciTech Connect (OSTI)

    Zuntz, J.; Ferreira, P. G.; Zlosnik, T. G; Bourliot, F.; Starkman, G. D.

    2010-05-15

    We present a comprehensive investigation of cosmological constraints on the class of vector field formulations of modified gravity called generalized Einstein-aether models. Using linear perturbation theory we generate cosmic microwave background and large-scale structure spectra for general parameters of the theory, and then constrain them in various ways. We investigate two parameter regimes: a dark matter candidate where the vector field sources structure formation, and a dark energy candidate where it causes late-time acceleration. We find that the dark matter candidate does not fit the data, and identify five physical problems that can restrict this and other theories of dark matter. The dark energy candidate does fit the data, and we constrain its fundamental parameters; most notably we find that the theory's kinetic index parameter n{sub ae} can differ significantly from its {Lambda}CDM value.

  1. Modifying gravity with the aether: An alternative to dark matter

    SciTech Connect (OSTI)

    Zlosnik, T. G; Ferreira, P. G; Starkman, G. D.

    2007-02-15

    There is evidence that Newton and Einstein's theories of gravity cannot explain the dynamics of a universe made up solely of baryons and radiation. To be able to understand the properties of galaxies, clusters of galaxies and the universe on the whole it has become commonplace to invoke the presence of dark matter. An alternative approach is to modify the gravitational field equations to accommodate observations. We propose a new class of gravitational theories in which we add a new degree of freedom, the Aether, in the form of a vector field that is coupled covariantly, but nonminimally, with the space-time metric. We explore the Newtonian and non-Newtonian limits, discuss the conditions for these theories to be consistent and explore their effect on cosmology.

  2. Phenomenology of electrostatically charged droplet combustion in normal gravity

    SciTech Connect (OSTI)

    Anderson, Eric K.; Koch, Jeremy A.; Kyritsis, Dimitrios C.

    2008-08-15

    Experimental findings are provided on the effect of electrostatically charging a fuel on single-burning droplet combustion in normal gravity. It was established that significant modification of the flame morphology and the droplet burning time could be achieved, solely by the droplet charge, without the application of external electric fields. Negative charging of the droplets of mixtures of isooctane with either ethanol or a commercially available anti-static additive generated intense motion of the flame and abbreviated the droplet burning time by as much as 40% for certain blend compositions. Positive charging of the droplets generated almost spherical flames, because electrostatic attraction toward the droplets countered the effect of buoyancy. By comparing combustion of droplets of the same conductivity but different compositions, coupling of electrostatics with combustion chemistry was established. (author)

  3. Manufacturing Energy and Carbon Footprint Definitions and Assumptions, October 2012

    Office of Energy Efficiency and Renewable Energy (EERE)

    Definitions of parameters and table of assumptions for the Manufacturing Energy and Carbon Footprint

  4. Self-Consistent Cosmological Simulations of DGP Braneworld Gravity

    SciTech Connect (OSTI)

    Schmidt, Fabian; /Chicago U., Astron. Astrophys. Ctr. /KICP, Chicago

    2009-09-01

    We perform cosmological N-body simulations of the Dvali-Gabadadze-Porrati braneworld model, by solving the full non-linear equations of motion for the scalar degree of freedom in this model, the brane bending mode. While coupling universally to matter, the brane-bending mode has self-interactions that become important as soon as the density field becomes non-linear. These self-interactions lead to a suppression of the field in high-density environments, and restore gravity to General Relativity. The code uses a multi-grid relaxation scheme to solve the non-linear field equation in the quasi-static approximation. We perform simulations of a flat self-accelerating DGP model without cosmological constant. However, the type of non-linear interactions of the brane-bending mode, which are the focus of this study, are generic to a wide class of braneworld cosmologies. The results of the DGP simulations are compared with standard gravity simulations assuming the same expansion history, and with DGP simulations using the linearized equation for the brane bending mode. This allows us to isolate the effects of the non-linear self-couplings of the field which are noticeable already on quasi-linear scales. We present results on the matter power spectrum and the halo mass function, and discuss the behavior of the brane bending mode within cosmological structure formation. We find that, independently of CMB constraints, the self-accelerating DGP model is strongly constrained by current weak lensing and cluster abundance measurements.

  5. Contract Requirements Definition FY 2019-2029

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Infrastructure and Facility Base Operations * Operate key waste management facilities * Maintain safe operations for Hanford nuclear and nonnuclear facilities * Provide ...

  6. Testing universal relations of neutron stars with a nonlinear matter-gravity coupling theory

    SciTech Connect (OSTI)

    Sham, Y.-H.; Lin, L.-M.; Leung, P. T. E-mail: lmlin@phy.cuhk.edu.hk

    2014-02-01

    Due to our ignorance of the equation of state (EOS) beyond nuclear density, there is still no unique theoretical model for neutron stars (NSs). It is therefore surprising that universal EOS-independent relations connecting different physical quantities of NSs can exist. Lau et al. found that the frequency of the f-mode oscillation, the mass, and the moment of inertia are connected by universal relations. More recently, Yagi and Yunes discovered the I-Love-Q universal relations among the mass, the moment of inertia, the Love number, and the quadrupole moment. In this paper, we study these universal relations in the Eddington-inspired Born-Infeld (EiBI) gravity. This theory differs from general relativity (GR) significantly only at high densities due to the nonlinear coupling between matter and gravity. It thus provides us an ideal case to test how robust the universal relations of NSs are with respect to the change of the gravity theory. Due to the apparent EOS formulation of EiBI gravity developed recently by Delsate and Steinhoff, we are able to study the universal relations in EiBI gravity using the same techniques as those in GR. We find that the universal relations in EiBI gravity are essentially the same as those in GR. Our work shows that, within the currently viable coupling constant, there exists at least one modified gravity theory that is indistinguishable from GR in view of the unexpected universal relations.

  7. Two-phase reduced gravity experiments for a space reactor design

    SciTech Connect (OSTI)

    Antoniak, Z.I.

    1986-08-01

    Future space missions envision the use of large nuclear reactors utilizing either a single or a two-phase alkali-metal working fluid. The design and analysis of such reactors require state-of-the-art computer codes that can properly treat alkali-metal flow and heat transfer in a reduced-gravity environment. New flow regime maps, models, and correlations are required if the codes are to be successfully applied to reduced-gravity flow and heat transfer. General plans are put forth for the reduced-gravity experiments which will have to be performed, at NASA facilities, with benign fluids. Data from the reduced-gravity experiments with innocuous fluids are to be combined with normal gravity data from two-phase alkali-metal experiments. Because these reduced-gravity experiments will be very basic, and will employ small test loops of simple geometry, a large measure of commonality exists between them and experiments planned by other organizations. It is recommended that a committee be formed, to coordinate all ongoing and planned reduced gravity flow experiments.

  8. A key management concept for the CTBT International Monitoring System

    SciTech Connect (OSTI)

    Herrington, P.; Draelos, T.; Craft, R.; Brickell, E.; Frankel, Y.; Silvestri, M.

    1997-08-01

    Cryptographic authentication (commonly referred to as ``technical authentication`` in Working Group B) is an enabling technology which ensures the integrity of sensor data and security of digital networks under various data security compromise scenarios. The use of cryptographic authentication,however, implies the development of a key management infrastructure for establishing trust in the generation and distribution of cryptographic keys. This paper proposes security and operational requirements for a CTBT (Comprehensive Test Ban Treaty) key management system and, furthermore, presents a public key based solution satisfying the requirements. The key management system is instantiated with trust distribution technologies similar to those currently implemented in industrial public key infrastructures. A complete system solution is developed.

  9. Key Renewable Energy Opportunities for Oklahoma Tribes | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Energy Key Renewable Energy Opportunities for Oklahoma Tribes Key Renewable Energy Opportunities for Oklahoma Tribes August 13, 2012 Oklahoma City, Oklahoma Cox Convention Center The Office of Indian Energy Tribal Leader Energy Forum on Key Renewable Energy Opportunities for Oklahoma Tribes was held August 13, 2012, in Oklahoma City, Oklahoma. The forum gave Oklahoma tribal leaders the opportunity to receive the latest updates on DOE's energy development efforts in Indian Country and

  10. 2015 Key Water Power Program and National Laboratory Accomplishments Report

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    | Department of Energy 5 Key Water Power Program and National Laboratory Accomplishments Report 2015 Key Water Power Program and National Laboratory Accomplishments Report 2015 Key Water Power Program and National Laboratory Accomplishments Report The U.S. Department of Energy (DOE) Water Power Program is committed to developing and deploying a portfolio of innovative technologies and market solutions for clean, domestic power generation from water resources across the United States. By

  11. 2015 Key Wind Program and National Laboratory Accomplishments | Department

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    of Energy Key Wind Program and National Laboratory Accomplishments 2015 Key Wind Program and National Laboratory Accomplishments 2015 Key Wind Program and National Laboratory Accomplishments The U.S. Department of Energy (DOE) Wind Program is committed to helping the nation secure cost-competitive sources of renewable energy through the development and deployment of innovative wind power technologies. By investing in improvements to wind plant design, technology development, and operation as

  12. Key Board Products and Special Reports - Hanford Site

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Key Board Products and Special Reports Hanford Advisory Board Convening Report SSAB Guidance Memorandum of Understanding Membership Nomination and Appointment Process Operating Ground Rules Calendars Advice and Responses Full Board Meeting Information Committee Meeting Information Outgoing Board Correspondence Key Board Products and Special Reports HAB Annual Report HAB and Committee Lists Points of Contact Related Links Key Board Products and Special Reports Email Email Page | Print Print Page

  13. Vehicle Technologies Office: Key Activities in Vehicles | Department of

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Energy About the Vehicle Technologies Office » Vehicle Technologies Office: Key Activities in Vehicles Vehicle Technologies Office: Key Activities in Vehicles We conduct work in four key areas to develop and deploy vehicle technologies that reduce the use of petroleum while maintaining or improving performance, power, and comfort. Research and development (R&D); testing and analysis; government and community stakeholder support; and education help people access and use efficient, clean

  14. DOE Announces More Key Administration Posts | Department of Energy

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Key Administration Posts DOE Announces More Key Administration Posts March 20, 2009 - 12:00am Addthis WASHINGTON, DC - Today, President Barack Obama announced his intent to nominate the following individuals to key administration posts: Dr. Steven E. Koonin, Under Secretary for Science, Department of Energy; David Sandalow, Assistant Secretary for Policy and International Affairs, Department of Energy; Ambassador Johnnie Carson, Assistant Secretary for African Affairs, State Department; Kathy

  15. Key Dates | U.S. DOE Office of Science (SC)

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Key Activities Key Activities Key Activities Bringing Innovative Manufacturing Technologies and Materials to Full "To Scale" Industrial Use Innovation is inherent in all of AMO's investment activities helping small, medium, and large manufacturers develop cutting-edge clean energy products and technology that reduce energy consumption in every stage or place it is used in industry. Built upon a foundation of strong public-private partnerships, our support of advanced manufacturing

  16. Key Dates | U.S. DOE Office of Science (SC)

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Key Dates Visiting Faculty Program (VFP) VFP Home Eligibility Benefits Participant Obligations How to Apply Key Dates Frequently Asked Questions Contact WDTS Home Key Dates Print Text Size: A A A FeedbackShare Page At the submission deadline (shown in red) the application system will close, and no materials will be accepted after the submission deadline has passed. The Application System closes at 5:00 PM Eastern Time. VFP Term: Summer 2017 On-line Application Opens October 17, 2016 Applications

  17. Hydrodynamic experiment provides key data for Stockpile Stewardship

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Hydrodynamic experiment provides Stockpile Stewardship key data Los Alamos hydrodynamic experiment provides key data for Stockpile Stewardship Hydrodynamic experiments such as Leda involve non-nuclear surrogate materials that mimic many of the properties of nuclear materials. December 22, 2014 Los Alamos hydrodynamic experiment provides key data for Stockpile Stewardship "Leda," experimental vessel in the "Zero Room" at the underground U1a facility, at the Nevada National

  18. Key Energy-Saving Projects for Smaller Facilities | Department...

    Energy.gov (indexed) [DOE]

    save energy and how the Industrial Assessment Centers can help. Briggs & Stratton provides examples of projects and implementation plans which worked for them. Key Energy-Saving ...

  19. Expert Meeting Report: Key Innovations for Adding Energy Efficiency...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    ... with the 2012 International Builders' Show (IBS) on February 8, 2012, in Orlando, Florida. ... (IBS) on February 8, 2012, in Orlando, Florida, titled Key Innovations for Adding Energy ...

  20. President Obama Announces More Key Administration Posts | Department...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Addthis THE WHITE HOUSE Office of the Press Secretary WASHINGTON - Today, President Barack Obama announced his intent to nominate the following individuals to key Administration ...

  1. TEC Working Group Topic Groups Rail Key Documents Intermodal...

    Office of Environmental Management (EM)

    Intermodal Subgroup TEC Working Group Topic Groups Rail Key Documents Intermodal Subgroup Intermodal Subgroup Draft Work Plan (206.83 KB) More Documents & Publications TEC Working ...

  2. TEC Working Group Topic Groups Rail Key Documents Radiation Monitoring...

    Office of Environmental Management (EM)

    TEC Working Group Topic Groups Rail Key Documents Radiation Monitoring Subgroup Radiation Monitoring Subgroup Draft Work Plan - February 4, 2008 (114.02 KB) More Documents & ...

  3. Key Practical Issues in Strengthening Safety Culture, INSAG-15

    Energy.gov [DOE]

    Key Pratical Issues in Strengthening Safety Culture, INSAG-15. A report by the International Nuclear Safety Advisory Gorup, International Atomic Energy Agency, Vienna, 2002.

  4. Pantex Plant Achieves Key Safety Milestone Ahead of Schedule...

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Achieves Key Safety Milestone Ahead of Schedule | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People Mission Managing the Stockpile Preventing...

  5. Key Parameters Affecting DPF Performance Degradation and Impact...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    Parameters Affecting DPF Performance Degradation and Impact on Lifetime Fuel Economy Key Parameters Affecting DPF Performance Degradation and Impact on Lifetime Fuel Economy ...

  6. Liquid Water the Key to Arctic Cloud Radiative Closure

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Water the Key to Arctic Cloud Radiative Closure For original submission and image(s), see ARM Research Highlights http:www.arm.govsciencehighlights Research Highlight...

  7. Geothermal Regulations in Colorado - Land Ownership is the Key...

    Open Energy Information (Open El) [EERE & EIA]

    Jump to: navigation, search OpenEI Reference LibraryAdd to library Conference Paper: Geothermal Regulations in Colorado - Land Ownership is the Key Abstract Geothermal resources in...

  8. Keys to Successful Quality Assurance and Quality Control Programs (101)

    Office of Energy Efficiency and Renewable Energy (EERE)

    Better Buildings Residential Network Peer Exchange Call Series: Keys to Successful Quality Assurance and Quality Control Programs (101), call slides and discussion summary.

  9. Key Parameters Governing the Energy Density of Rechargeable Li...

    Office of Scientific and Technical Information (OSTI)

    of Rechargeable LiS Batteries Citation Details In-Document Search Title: Key Parameters Governing the Energy Density of Rechargeable LiS Batteries Authors: Gao, Jie ; ...

  10. California Energy Incentive Programs: An Annual Update on Key...

    Office of Environmental Management (EM)

    Energy Incentive Programs: An Annual Update on Key Energy Issues and Financial Opportunities for Federal Sites in California California Energy Incentive Programs: An Annual Update ...

  11. LANL breaks ground on key sediment control project

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Sediment control project LANL breaks ground on key sediment control project Called "grade-control" structures, the approximately 2 million features are up to eight feet high and...

  12. Geothermal regulations in Colorado---land ownership is the key...

    Open Energy Information (Open El) [EERE & EIA]

    ownership is the key Author P. Morgan Published Journal Geothermal Resources Council- Transactions, 2012 DOI Not Provided Check for DOI availability: http:crossref.org...

  13. Advanced Analysis Software Key to New, Energy-Efficient Technologies...

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Advanced Analysis Software Key to New, Energy-Efficient Technologies Leveraging Scientific and Engineering Know-How to Advance Sources of Renewable Energy Argonne National ...

  14. Hydrodynamic experiment provides key data for Stockpile Stewardship

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    weapon performance in the absence of full-scale underground nuclear testing," said Webster. Los Alamos hydrodynamic experiment provides key data for Stockpile Stewardship In...

  15. Rapid Compression Machine … A Key Experimental Device to Effectively...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    to Effectively Collaborate with Basic Energy Sciences Rapid Compression Machine A Key Experimental Device to Effectively Collaborate with Basic Energy Sciences 2011 DOE ...

  16. Water dynamics clue to key residues in protein folding

    SciTech Connect (OSTI)

    Gao, Meng [State Key Laboratory for Turbulence and Complex Systems, and Department of Biomedical Engineering, and Center for Theoretical Biology, and Center for Protein Science, Peking University, Beijing 100871 (China)] [State Key Laboratory for Turbulence and Complex Systems, and Department of Biomedical Engineering, and Center for Theoretical Biology, and Center for Protein Science, Peking University, Beijing 100871 (China); Zhu, Huaiqiu, E-mail: hqzhu@pku.edu.cn [State Key Laboratory for Turbulence and Complex Systems, and Department of Biomedical Engineering, and Center for Theoretical Biology, and Center for Protein Science, Peking University, Beijing 100871 (China)] [State Key Laboratory for Turbulence and Complex Systems, and Department of Biomedical Engineering, and Center for Theoretical Biology, and Center for Protein Science, Peking University, Beijing 100871 (China); Yao, Xin-Qiu [State Key Laboratory for Turbulence and Complex Systems, and Department of Biomedical Engineering, and Center for Theoretical Biology, and Center for Protein Science, Peking University, Beijing 100871 (China) [State Key Laboratory for Turbulence and Complex Systems, and Department of Biomedical Engineering, and Center for Theoretical Biology, and Center for Protein Science, Peking University, Beijing 100871 (China); Department of Biophysics, Kyoto University, Sakyo Kyoto 606-8502 (Japan); She, Zhen-Su, E-mail: she@pku.edu.cn [State Key Laboratory for Turbulence and Complex Systems, and Department of Biomedical Engineering, and Center for Theoretical Biology, and Center for Protein Science, Peking University, Beijing 100871 (China)] [State Key Laboratory for Turbulence and Complex Systems, and Department of Biomedical Engineering, and Center for Theoretical Biology, and Center for Protein Science, Peking University, Beijing 100871 (China)

    2010-01-29

    A computational method independent of experimental protein structure information is proposed to recognize key residues in protein folding, from the study of hydration water dynamics. Based on all-atom molecular dynamics simulation, two key residues are recognized with distinct water dynamical behavior in a folding process of the Trp-cage protein. The identified key residues are shown to play an essential role in both 3D structure and hydrophobic-induced collapse. With observations on hydration water dynamics around key residues, a dynamical pathway of folding can be interpreted.

  17. NREL Fills Key Leadership Role for Energy Systems Security and...

    U.S. Department of Energy (DOE) all webpages (Extended Search)

    Fills Key Leadership Role for Energy Systems Security and Resilience April 6, 2015 Dr. ... a smart home, electricity storage, an electric vehicle charging station and solar panels. ...

  18. Energy Critical Infrastructure and Key Resources Sector-Specific

    Energy.gov (indexed) [DOE]

    Energy Critical Infrastructure and Key Resources Sector-Specific Plan as input to the National Infrastructure Protection Plan (Redacted) May 2007 Department of Energy Energy Sector ...

  19. SECTION L -ATTACHMENT B - LISTING OF KEY PERSONNEL

    National Nuclear Security Administration (NNSA)

    B, Page 1 SECTION L ATTACHMENT B LISTING OF KEY PERSONNEL TITLE NAME [Note: Add/remove extra rows if needed]

  20. PEM Fuel Cell Technology, Key Research Needs and Approaches ...

    Office of Energy Efficiency and Renewable Energy (EERE) (indexed site)

    PEM FUEL CELL TECHNOLOGY Key Research Needs and Approaches Tom Jarvi UTC Power South ... Stationary CHP 40-80,000 hr components - seals, membranes Water management Robust systems ...