National Library of Energy BETA

Sample records for yield substantial energy

  1. New Refrigeration Technology Could Substantially Cut Energy Use...

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

    New Refrigeration Technology Could Substantially Cut Energy Use New Refrigeration Technology Could Substantially Cut Energy Use April 1, 2016 - 11:40pm Addthis New Energy ...

  2. Potential Yield Mapping of Dedicated Energy Crops

    Broader source: Energy.gov [DOE]

    Breakout Session 1B—Integration of Supply Chains I: Breaking Down Barriers Potential Yield Mapping of Dedicated Energy Crops Chris Daly, Director, PRISM Climate Group, Oregon State University

  3. Combined inactivation of the Clostridium cellulolyticum lactate and malate dehydrogenase genes substantially increases ethanol yield from cellulose and switchgrass fermentations

    SciTech Connect (OSTI)

    Li, Yongchao; Tschaplinski, Timothy J; Engle, Nancy L; Hamilton, Choo Yieng; Rodriguez, Jr., Miguel; Liao, James C; Schadt, Christopher Warren; Guss, Adam M; Yang, Yunfeng; Graham, David E

    2012-01-01

    Background: The model bacterium Clostridium cellulolyticum efficiently hydrolyzes crystalline cellulose and hemicellulose, using cellulosomes to degrade lignocellulosic biomass. Although it imports and ferments both pentose and hexose sugars to produce a mixture of ethanol, acetate, lactate, H2 and CO2, the proportion of ethanol is low, which impedes its use in consolidated bioprocessing for biofuels. Therefore genetic engineering will likely be required to improve the ethanol yield. Random mutagenesis, plasmid transformation, and heterologous expression systems have previously been developed for C. cellulolyticum, but targeted mutagenesis has not been reported for this organism. Results: The first targeted gene inactivation system was developed for C. cellulolyticum, based on a mobile group II intron originating from the Lactococcus lactis L1.LtrB intron. This markerless mutagenesis system was used to disrupt both the paralogous L-lactate dehydrogenase (Ccel_2485; ldh) and L-malate dehydrogenase (Ccel_0137; mdh) genes, distinguishing the overlapping substrate specificities of these enzymes. Both mutations were then combined in a single strain. This double mutant produced 8.5-times more ethanol than wild-type cells growing on crystalline cellulose. Ethanol constituted 93% of the major fermentation products (by molarity), corresponding to a molar ratio of ethanol to organic acids of 15, versus 0.18 in wild-type cells. During growth on acid-pretreated switchgrass, the double mutant also produced four-times as much ethanol as wild-type cells. Detailed metabolomic analyses identified increased flux through the oxidative branch of the mutant s TCA pathway. Conclusions: The efficient intron-based gene inactivation system produced the first gene-targeted mutations in C. cellulolyticum. As a key component of the genetic toolbox for this bacterium, markerless targeted mutagenesis enables functional genomic research in C. cellulolyticum and rapid genetic engineering to

  4. Potential Yield Mapping of Dedicated Energy Crops

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

    Yield Mapping of Dedicated Energy Crops Christopher Daly and Michael Halbleib PRISM Climate Group Sun Grant Western Region GIS Center Oregon State University Corvallis, Oregon, USA Sun Grant Initiative  Consortium of the nation's land-grant universities addressing national bioenergy and bioproduct challenges  Five Regional University Centers  Engaging agricultural and natural resource colleges in every state and territory Regional Feedstock Partnership U.S. Department of Agriculture

  5. Secretary of Energy Recognizes Federal Employees for Efforts Yielding $18

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

    Million in Energy Savings | Department of Energy Recognizes Federal Employees for Efforts Yielding $18 Million in Energy Savings Secretary of Energy Recognizes Federal Employees for Efforts Yielding $18 Million in Energy Savings November 1, 2007 - 4:21pm Addthis 2007 Federal Energy and Water Management Awardees Honored WASHINGTON, DC - U.S. Department of Energy Secretary Samuel W. Bodman today honored 25 individuals, teams, and organizations throughout the Federal government with the 2007

  6. Laser fusion experiment yields record energy at NIF | National...

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

    Laser fusion experiment yields record energy at NIF | National Nuclear Security Administration Facebook Twitter Youtube Flickr RSS People Mission Managing the Stockpile Preventing...

  7. Innovative, Lower Cost Sensors and Controls Yield Better Energy Efficiency

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

    | Department of Energy Innovative, Lower Cost Sensors and Controls Yield Better Energy Efficiency Innovative, Lower Cost Sensors and Controls Yield Better Energy Efficiency March 23, 2015 - 1:05pm Addthis ORNL researchers are experimenting with additive roll-to-roll manufacturing techniques to develop low-cost wireless sensors. ORNL’s Pooran Joshi shows how the process enables electronics components to be printed on flexible plastic substrates. Credit: Oak Ridge National Lab ORNL

  8. Yield

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

    Yield scalings of clusters with fewer than 100 nucleons James B. Elliott ∗ , Kyrill A. Bugaev ∗ , Luciano G. Moretto ∗ and Larry Phair ∗ ∗ Nuclear Science Division, Lawrence Berkeley National Laboratory, Berkeley, California 94720 Abstract. This chapter gives a historical review of the scaling of particles yields emitted from excited nuclei. The focus will be on what scaling is, what can be learned from scaling, the underlying theory of why one might expect particle yields to scale,

  9. Energy Dependence of Fission Product Yields for 239Pu, 235U,...

    Office of Scientific and Technical Information (OSTI)

    Energy Dependence of Fission Product Yields for 239Pu, 235U, and 238U Citation Details In-Document Search Title: Energy Dependence of Fission Product Yields for 239Pu, 235U, and ...

  10. substantially reduced production costs

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

    production costs - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy ...

  11. In-situ determination of energy species yields of intense particle beams

    DOE Patents [OSTI]

    Kugel, Henry W.; Kaita, Robert

    1987-01-01

    An arrangement is provided for the in-situ determination of energy species yields of intense particle beams. The beam is directed onto a target surface of known composition, such that Rutherford backscattering of the beam occurs. The yield-energy characteristic response of the beam to backscattering from the target is analyzed using Rutherford backscattering techniques to determine the yields of energy species components of the beam.

  12. In-situ determination of energy species yields of intense particle beams

    DOE Patents [OSTI]

    Kugel, Henry W.; Kaita, Robert

    1987-03-03

    An arrangement is provided for the in-situ determination of energy species yields of intense particle beams. The beam is directed onto a target surface of known composition, such that Rutherford backscattering of the beam occurs. The yield-energy characteristic response of the beam to backscattering from the target is analyzed using Rutherford backscattering techniques to determine the yields of energy species components of the beam.

  13. Substantial Transformation | Department of Energy

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

    Frequently Asked Questions Questions and Answers for the Smart Grid Investment Grant Program: Buy American Better Buildings Neighborhood Program Grant Recipient Management Handbook...

  14. Olefins from High Yield Autothermal Reforming Process - Energy Innovation

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

    Portal Olefins from High Yield Autothermal Reforming Process DOE Grant Recipients University of Minnesota Contact University of Minnesota About This Technology <span id="Caption"><span id="ctl00_MainContentHolder_zoomimage_defaultCaption">Isobutylene is used to produce fuel additives.</span></span> Isobutylene is used to produce fuel additives. <span id="Caption"><span

  15. Modified Yeast to Boost Biofuel Yields - Energy Innovation Portal

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

    Modified Yeast to Boost Biofuel Yields Great Lakes Bioenergy Research Center Contact GLBRC About This Technology Technology Marketing Summary Producing biofuel on an industrial scale requires efficient fermentation of cellulosic plant material. Glucose and xylose are two of the most abundant sugars found in biomass. The yeast most commonly used for fermentation - Saccharomyces cerevisiae - can ferment glucose but not xylose. Researchers hope to improve fermentation by identifying/mutating

  16. Energy-Focused Trade Mission Will Yield Positive Effects for...

    Office of Environmental Management (EM)

    landed in China to lead a presidential trade mission focused on connecting U.S. businesses with opportunities in the green infrastructure and energy efficiency industries. ...

  17. Innovative, Lower Cost Sensors and Controls Yield Better Energy...

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

    Energy Efficiency March 23, 2015 - 1:05pm Addthis ORNL researchers are experimenting with additive roll-to-roll manufacturing techniques to develop low-cost wireless sensors. ...

  18. Integrated Energy Systems Multi-Media Webcast: Three CHP Sites Yield

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

    Important Lessons Learned, September 2005 | Department of Energy Multi-Media Webcast: Three CHP Sites Yield Important Lessons Learned, September 2005 Integrated Energy Systems Multi-Media Webcast: Three CHP Sites Yield Important Lessons Learned, September 2005 Cooling, Heating and Power (CHP) system integration is advancing. The U.S. Department of Energy partnered with industry to accelerate CHP system integration. This is an announcement for a webcast that provided detailed information on

  19. Active Wake Redirection Control to Improve Energy Yield (Poster)

    SciTech Connect (OSTI)

    Churchfield, M. J.; Fleming, P.; DeGeorge, E.; Bulder, B; White, S. M.

    2014-10-01

    Wake effects can dramatically reduce the efficiency of waked turbines relative to the unwaked turbines. Wakes can be deflected, or 'redirected,' by applying yaw misalignment to the turbines. Yaw misalignment causes part of the rotor thrust vector to be pointed in the cross-stream direction, deflecting the flow and the wake. Yaw misalignment reduces power production, but the global increase in wind plant power due to decreased wake effect creates a net increase in power production. It is also a fairly simple control idea to implement at existing or new wind plants. We performed high-fidelity computational fluid dynamics simulations of the wake flow of the proposed Fishermen's Atlantic City Windfarm (FACW) that predict that under certain waking conditions, wake redirection can increase plant efficiency by 10%. This means that by applying wake redirection control, for a given watersheet area, a wind plant can either produce more power, or the same amount of power can be produced with a smaller watersheet area. With the power increase may come increased loads, though, due to the yaw misalignment. If misalignment is applied properly, or if layered with individual blade pitch control, though, the load increase can be mitigated. In this talk we will discuss the concept of wake redirection through yaw misalignment and present our CFD results of the FACW project. We will also discuss the implications of wake redirection control on annual energy production, and finally we will discuss plans to implement wake redirection control at FACW when it is operational.

  20. Energy Dependence of Fission Product Yields for 239Pu, 235U,...

    Office of Scientific and Technical Information (OSTI)

    Title: Energy Dependence of Fission Product Yields for 239Pu, 235U, and 238U Authors: Tornow, Werner 1 ; Bredeweg, Todd Allen 2 ; Wilhelmy, Jerry B. 2 ; Vieira, David J. 2 ...

  1. Energy-Focused Trade Mission Will Yield Positive Effects for American

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

    Businesses and the Global Environment | Department of Energy Energy-Focused Trade Mission Will Yield Positive Effects for American Businesses and the Global Environment Energy-Focused Trade Mission Will Yield Positive Effects for American Businesses and the Global Environment April 13, 2015 - 2:35pm Addthis The joint trade mission will make stops in Beijing, Shanghai and Guangzhou. | Map by <a href="/node/712881">Daniel Wood</a>, Department of Energy. The joint trade

  2. In-situ determination of energy species yields of intense particle beams

    DOE Patents [OSTI]

    Kugel, H.W.; Kaita, R.

    1983-09-26

    Objects of the present invention are provided for a particle beam having a full energy component at least as great as 25 keV, which is directed onto a beamstop target, such that Rutherford backscattering, preferably near-surface backscattering occurs. The geometry, material composition and impurity concentration of the beam stop are predetermined, using any suitable conventional technique. The energy-yield characteristic response of backscattered particles is measured over a range of angles using a fast ion electrostatic analyzer having a microchannel plate array at its focal plane. The knee of the resulting yield curve, on a plot of yield versus energy, is analyzed to determine the energy species components of various beam particles having the same mass.

  3. Analysis of incident-energy dependence of delayed neutron yields in actinides

    SciTech Connect (OSTI)

    Nasir, Mohamad Nasrun bin Mohd Metorima, Kouhei Ohsawa, Takaaki Hashimoto, Kengo

    2015-04-29

    The changes of delayed neutron yields (?{sub d}) of Actinides have been analyzed for incident energy up to 20MeV using realized data of precursor after prompt neutron emission, from semi-empirical model, and delayed neutron emission probability data (P{sub n}) to carry out a summation method. The evaluated nuclear data of the delayed neutron yields of actinide nuclides are still uncertain at the present and the cause of the energy dependence has not been fully understood. In this study, the fission yields of precursor were calculated considering the change of the fission fragment mass yield based on the superposition of fives Gaussian distribution; and the change of the prompt neutrons number associated with the incident energy dependence. Thus, the incident energy dependent behavior of delayed neutron was analyzed.The total number of delayed neutron is expressed as ?{sub d}=?Y{sub i} P{sub ni} in the summation method, where Y{sub i} is the mass yields of precursor i and P{sub ni} is the delayed neutron emission probability of precursor i. The value of Y{sub i} is derived from calculation of post neutron emission mass distribution using 5 Gaussian equations with the consideration of large distribution of the fission fragments. The prompt neutron emission ?{sub p} increases at higher incident-energy but there are two different models; one model says that the fission fragment mass dependence that prompt neutron emission increases uniformly regardless of the fission fragments mass; and the other says that the major increases occur at heavy fission fragments area. In this study, the changes of delayed neutron yields by the two models have been investigated.

  4. Yields and composition of syrups resulting from the flash pyrolysis of cellulosic materials using radiant energy

    SciTech Connect (OSTI)

    De Jenga, C.I.; Antal, M.J. Jr.; Jones, M. Jr.

    1982-11-01

    Cellulosic materials have been flash pyrolyzed using concentrated solar energy. The syrups obtained were composed mainly of levoglucosan. Radiant flash pyrolysis has thus been identified as a potentially attractive means of selectively degrading biomass material into good yields of relatively few products. The techniques and equipment employed to determine the composition of the pyrolyzates are described.

  5. Yield Improvement and Energy Savings Uing Phosphonates as Additives in Kraft pulping

    SciTech Connect (OSTI)

    Ulrike W. Tschirner; Timothy Smith

    2007-03-31

    Project Objective: Develop a commercially viable modification to the Kraft process resulting in energy savings, increased yield and improved bleachability. Evaluate the feasibility of this technology across a spectrum of wood species used in North America. Develop detailed fundamental understanding of the mechanism by which phosphonates improve KAPPA number and yield. Evaluate the North American market potential for the use of phosphonates in the Kraft pulping process. Examine determinants of customer perceived value and explore organizational and operational factors influencing attitudes and behaviors. Provide an economic feasibility assessment for the supply chain, both suppliers (chemical supply companies) and buyers (Kraft mills). Provide background to most effectively transfer this new technology to commercial mills.

  6. Development of High Yield Feedstocks and Biomass Conversion Technology for Renewable Energy

    SciTech Connect (OSTI)

    Hashimoto, Andrew G.; Crow, Susan; DeBeryshe, Barbara; Ha, Richard; Jakeway, Lee; Khanal, Samir; Nakahata, Mae; Ogoshi, Richard; Shimizu, Erik; Stern, Ivette; Turano, Brian; Turn, Scott; Yanagida, John

    2015-04-09

    This project had two main goals. The first goal was to evaluate several high yielding tropical perennial grasses as feedstock for biofuel production, and to characterize the feedstock for compatible biofuel production systems. The second goal was to assess the integration of renewable energy systems for Hawaii. The project focused on high-yield grasses (napiergrass, energycane, sweet sorghum, and sugarcane). Field plots were established to evaluate the effects of elevation (30, 300 and 900 meters above sea level) and irrigation (50%, 75% and 100% of sugarcane plantation practice) on energy crop yields and input. The test plots were extensive monitored including: hydrologic studies to measure crop water use and losses through seepage and evapotranspiration; changes in soil carbon stock; greenhouse gas flux (CO2, CH4, and N2O) from the soil surface; and root morphology, biomass, and turnover. Results showed significant effects of environment on crop yields. In general, crop yields decrease as the elevation increased, being more pronounced for sweet sorghum and energycane than napiergrass. Also energy crop yields were higher with increased irrigation levels, being most pronounced with energycane and less so with sweet sorghum. Daylight length greatly affected sweet sorghum growth and yields. One of the energy crops (napiergrass) was harvested at different ages (2, 4, 6, and 8 months) to assess the changes in feedstock characteristics with age and potential to generate co-products. Although there was greater potential for co-products from younger feedstock, the increased production was not sufficient to offset the additional cost of harvesting multiple times per year. The feedstocks were also characterized to assess their compatibility with biochemical and thermochemical conversion processes. The project objectives are being continued through additional support from the Office of Naval Research, and the Biomass Research and Development

  7. Detailed analysis of the energy yield of systems with covered sheet-and-tube PVT collectors

    SciTech Connect (OSTI)

    Santbergen, R.; Rindt, C.C.M.; van Zolingen, R.J.Ch.; Zondag, H.A.

    2010-05-15

    Solar cells have a typical efficiency in the range of 5-20%, implying that 80% or more of the incident solar energy can be harvested in the form of heat and applied for low-temperature heating. In a PVT collector one tries to collect this heat. In this work, the electrical and thermal yield of solar domestic hot water systems with one-cover sheet-and-tube PVT collectors were considered. Objectives of the work were to understand the mechanisms determining these yields, to investigate measures to improve these yields and to investigate the yield consequences if various solar cell technologies are being used. The work was carried out using numerical simulations. A detailed quantitative understanding of all loss mechanisms was obtained, especially of those being inherent to the use of PVT collectors instead of PV modules and conventional thermal collectors. The annual electrical efficiencies of the PVT systems investigated were up to 14% (relative) lower compared to pure PV systems and the annual thermal efficiencies up to 19% (relative) lower compared to pure thermal collector systems. The loss of electrical efficiency is mainly caused by the relatively high fluid temperature. The loss of thermal efficiency is caused both by the high emissivity of the absorber and the withdrawal of electrical energy. However, both the loss of electrical and thermal efficiency can be reduced further by the application of anti-reflective coatings. The thermal efficiency can be improved by the application of a low-emissivity coating on the absorber, however at the cost of a reduced electrical efficiency. (author)

  8. Bio-energy feedstock yields and their water quality benefits in Mississippi

    SciTech Connect (OSTI)

    Parajuli, Prem B.

    2011-08-10

    Cellulosic and agricultural bio-energy crops can, under careful management, be harvested as feedstock for bio-fuels production and provide environmental benefits. However, it is required to quantify their relative advantages in feedstock production and water quality. The primary objective of this research was to evaluate potential feedstock yield and water quality benefit scenarios of bioenergy crops: Miscanthus (Miscanthus-giganteus), Switchgrass (Panicum virgatum), Johnsongrass (Sorghum halepense), Alfalfa (Medicago sativa L.), Soybean {Glycine max (L.) Merr.}, and Corn (Lea mays) in the Upper Pearl River watershed (UPRW), Mississippi using a Soil and Water Assessment Tool (SWAT). The SWAT model was calibrated (January 1981 to December 1994) and validated (January 1995 to September 2008) using monthly measured stream flow data. The calibrated and validated model determined good to very good performance for stream flow prediction (R2 and E from 0.60 to 0.86). The RMSE values (from 14 m3 s-1 to 37 m3 s-1) were estimated at similar levels of errors during model calibration and validation. The long-term average annual potential feedstock yield as an alternative energy source was determined the greatest when growing Miscanthus grass (373,849 Mg) as followed by Alfalfa (206,077 Mg), Switchgrass (132,077 Mg), Johnsongrass (47,576 Mg), Soybean (37,814 Mg), and Corn (22,069 Mg) in the pastureland and cropland of the watershed. Model results determined that average annual sediment yield from the Miscanthus grass scenario determined the least (1.16 Mg/ha) and corn scenario the greatest (12.04 Mg/ha). The SWAT model simulated results suggested that growing Miscanthus grass in the UPRW would have the greatest potential feedstock yield and water quality benefits.

  9. Production of substantially pure fructose

    DOE Patents [OSTI]

    Hatcher, Herbert J.; Gallian, John J.; Leeper, Stephen A.

    1990-01-01

    A process is disclosed for the production of substantially pure fructose from sucrose-containing substrates. The process comprises converting the sucrose to levan and glucose, purifying the levan by membrane technology, hydrolyzing the levan to form fructose monomers, and recovering the fructose.

  10. Oxidation of NO in Sample Bags to Yield NO2 | Department of Energy

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

    of NO in Sample Bags to Yield NO2 Oxidation of NO in Sample Bags to Yield NO2 Presentation given at DEER 2006, August 20-24, 2006, Detroit, Michigan. Sponsored by the U.S. DOE's EERE FreedomCar and Fuel Partnership and 21st Century Truck Programs. 2006_deer_shah.pdf (106.24 KB) More Documents & Publications Electrostatic Neutralization - A Key to Accurate & Repeatable PM Filter Weighing Urea SCR and DPF System for Diesel Sport Utility Vehicle Meeting Tier II Bin 5 DOE and Ford Motor

  11. Algal Pretreatment Improves Biofuels Yield and Value (Fact Sheet), NREL Highlights, Science, NREL (National Renewable Energy Laboratory)

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

    Advanced process for algal biofuel production captures the value of both the lipids and carbohydrates for conversion to biofuels. The major challenges associated with algal biofuels production in a biorefinery-type setting include improving biomass uti- lization, increasing the process energetic yields, reducing waste and greenhouse gas emissions, and providing economically viable and scalable coproduct concepts. Researchers from the National Renewable Energy Laboratory (NREL) have dem-

  12. EERE Guidance on Manufactured Goods and Substantial Transformation

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

    GUIDANCE ON MANUFACTURED GOODS AND SUBSTANTIAL TRANSFORMATION FOR FINANCIAL ASSISTANCE AWARDS EFFECTIVE DATE: MAY 24, 2010 SUBJECT: GUIDANCE ON MANUFACTURED GOODS AND SUBSTANTIAL TRANSFORMATION FOR FINANCIAL ASSISTANCE AWARDS SCOPE: This guidance applies to all state, local and tribal government recipients and sub-recipients (grantees and subgrantees) of Recovery Act financial assistance from the Office of Energy Efficiency and Renewable Energy (EERE). LEGAL AUTHORITY: Section 1605 of the

  13. High Yield Method to Produce LGO from Biomass - Energy Innovation Portal

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

    High Yield Method to Produce LGO from Biomass Great Lakes Bioenergy Research Center Contact GLBRC About This Technology Technology Marketing Summary Levoglucosenone (LGO) is a highly dehydrated sugar typically derived from cellulose. It is an important, non-petroleum building block chemical with potential uses in a wide range of industrial processes. For example, it can be converted to 1,6-hexanediol to be utilized in the production of polyurethanes and polyesters. Conventionally, LGO is derived

  14. High-Yield Feedstock and Biomass Conversion Technology for Renewable Energy and Economic Development

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

    Andrew Hashimoto University of Hawaii This presentation does not contain any proprietary, confidential, or otherwise restricted information Develop sustainable, renewable energy systems for Hawaii and the tropics through: * Biomass feedstocks that grow year-round. * Feedstock characteristics that impact conversion processes. * Renewable energy projects that reduce dependence on fossil fuels. * Impact of renewable energy projects on rural communities. This project addresses the BETO goal to

  15. Earth-sheltered building yields energy savings for University of Minnesota

    SciTech Connect (OSTI)

    Not Available

    1983-04-01

    The design and energy efficiency of the Civil/Mineral Engineering Building at the University of Minnesota is discussed. The building combines relatively common energy-efficient surface building practices with earth-sheltered techniques already proven on the University Campus and innovative deep-earth sheltering.

  16. New Study: Renewable Energy for State Renewable Portfolio Standards Yield Sizable Benefits

    Broader source: Energy.gov [DOE]

    A new report from the Department of Energy’s (DOE’s) Lawrence Berkeley National Laboratory (LBNL) and National Renewable Energy Laboratory (NREL) finds that state renewable portfolio standard (RPS) policies reduced greenhouse gas emissions and air pollution, while also reducing water use, creating renewable energy jobs and suppressing wholesale electricity and natural gas prices.

  17. Energy Yield Determination of Concentrator Solar Cells using Laboratory Measurements: Preprint

    SciTech Connect (OSTI)

    Geisz, John F.; Garcia, Ivan; McMahon, William E.; Steiner, Myles A.; Ochoa, Mario; France, Ryan M.; Habte, Aron; Friedman, Daniel J.

    2015-09-14

    The annual energy conversion efficiency is calculated for a four junction inverted metamorphic solar cell that has been completely characterized in the laboratory at room temperature using measurements fit to a comprehensive optoelectronic model of the multijunction solar cells. A simple model of the temperature dependence is used to predict the performance of the solar cell under varying temperature and spectra characteristic of Golden, CO for an entire year. The annual energy conversion efficiency is calculated by integrating the predicted cell performance over the entire year. The effects of geometric concentration, CPV system thermal characteristics, and luminescent coupling are highlighted. temperature and spectra characteristic of Golden, CO for an entire year. The annual energy conversion efficiency is calculated by integrating the predicted cell performance over the entire year. The effects of geometric concentration, CPV system thermal characteristics, and luminescent coupling are highlighted.

  18. Using CAD software to simulate PV energy yield - The case of product integrated photovoltaic operated under indoor solar irradiation

    SciTech Connect (OSTI)

    Reich, N.H.; van Sark, W.G.J.H.M.; Turkenburg, W.C.; Sinke, W.C.

    2010-08-15

    In this paper, we show that photovoltaic (PV) energy yields can be simulated using standard rendering and ray-tracing features of Computer Aided Design (CAD) software. To this end, three-dimensional (3-D) sceneries are ray-traced in CAD. The PV power output is then modeled by translating irradiance intensity data of rendered images back into numerical data. To ensure accurate results, the solar irradiation data used as input is compared to numerical data obtained from rendered images, showing excellent agreement. As expected, also ray-tracing precision in the CAD software proves to be very high. To demonstrate PV energy yield simulations using this innovative concept, solar radiation time course data of a few days was modeled in 3-D to simulate distributions of irradiance incident on flat, single- and double-bend shapes and a PV powered computer mouse located on a window sill. Comparisons of measured to simulated PV output of the mouse show that also in practice, simulation accuracies can be very high. Theoretically, this concept has great potential, as it can be adapted to suit a wide range of solar energy applications, such as sun-tracking and concentrator systems, Building Integrated PV (BIPV) or Product Integrated PV (PIPV). However, graphical user interfaces of 'CAD-PV' software tools are not yet available. (author)

  19. Algal Pretreatment Improves Biofuels Yield and Value; Highlights in Science, NREL (National Renewable Energy Laboratory)

    SciTech Connect (OSTI)

    2015-05-15

    One of the major challenges associated with algal biofuels production in a biorefinery-type setting is improving biomass utilization in its entirety, increasing the process energetic yields and providing economically viable and scalable co-product concepts. We demonstrate the effectiveness of a novel, integrated technology based on moderate temperatures and low pH to convert the carbohydrates in wet algal biomass to soluble sugars for fermentation, while making lipids more accessible for downstream extraction and leaving a protein-enriched fraction behind. This research has been highlighted in the Green Chemistry journal article mentioned above and a milestone report, and is based on the work the researchers are doing for the AOP projects Algal Biomass Conversion and Algal Biofuels Techno-economic Analysis. That work has demonstrated an advanced process for algal biofuel production that captures the value of both the algal lipids and carbohydrates for conversion to biofuels.  With this process, as much as 150 GGE/ton of biomass can be produced, 2-3X more than can be produced by terrestrial feedstocks.  This can also reduce the cost of biofuel production by as much as 40%. This also represents the first ever design case for the algal lipid upgrading pathway.

  20. Energy Department Announces $15 Million for Advancements in Algal Biomass Yield, Phase 2 (ABY2)

    Broader source: Energy.gov [DOE]

    The Energy Department today announced up to $15 million in funding to develop technologies that are likely to succeed in producing 3,700 gallons of algal biofuel intermediate (or equivalent dry weight basis) per acre per year (gal/acre/yr) on an annualized average basis (not peak or projected) through multiple batch campaigns or on a semi-continuous or continuous basis, in an outdoor test environment by 2020.

  1. Substantial bulk photovoltaic effect enhancement via nanolayering

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Wang, Fenggong; Young, Steve M.; Zheng, Fan; Grinberg, Ilya; Rappe, Andrew M.

    2016-01-21

    Spontaneous polarization and inversion symmetry breaking in ferroelectric materials lead to their use as photovoltaic devices. However, further advancement of their applications are hindered by the paucity of ways of reducing bandgaps and enhancing photocurrent. By unravelling the correlation between ferroelectric materials’ responses to solar irradiation and their local structure and electric polarization landscapes, here we show from first principles that substantial bulk photovoltaic effect enhancement can be achieved by nanolayering PbTiO3 with nickel ions and oxygen vacancies ((PbNiO2)x(PbTiO3)1–x). The enhancement of the total photocurrent for different spacings between the Ni-containing layers can be as high as 43 times duemore » to a smaller bandgap and photocurrent direction alignment for all absorption energies. This is due to the electrostatic effect that arises from nanolayering. Lastly, this opens up the possibility for control of the bulk photovoltaic effect in ferroelectric materials by nanoscale engineering of their structure and composition.« less

  2. Noncommutative QED corrections to e{sup +}e{sup -}{yields}{gamma}{gamma}{gamma} at linear collider energies

    SciTech Connect (OSTI)

    Devoto, Alberto; Di Chiara, Stefano; Repko, Wayne W.

    2005-09-01

    We compute the total cross section as well as angular and energy distributions for process e{sup +}e{sup -}{yields}{gamma}{gamma}{gamma} with both unpolarized and polarized beams in the framework of noncommutative quantum electrodynamics (NCQED). The calculation is performed in the center of mass of colliding electron and positron and is evaluated for energies and integrated luminosities appropriate to future linear colliders. We find that by using unpolarized beams it is possible to probe the Lorentz symmetry violating azimuthal dependence of the cross section. Furthermore, with polarized beams the left-right asymmetry of the CP violating NCQED amplitudes can be used to obtain bounds on the noncommutative scale {lambda}{sub NC} which exceed 1.0 TeV.

  3. Impact of sub-cell internal luminescence yields on energy conversion efficiencies of tandem solar cells: A design principle

    SciTech Connect (OSTI)

    Zhu, Lin Kim, Changsu; Yoshita, Masahiro; Chen, Shaoqiang; Sato, Shintaroh; Mochizuki, Toshimitsu; Akiyama, Hidefumi; Kanemitsu, Yoshihiko

    2014-01-20

    To develop a realistic design principle, we calculated the maximum conversion efficiency ?{sub sc} and optimized sub-cell band-gap energies E{sub g} in double-junction tandem solar cells via a detailed-balance theory, paying particular attention to their dependence on internal luminescence quantum yields y{sub int} of the top and bottom sub-cell materials. A strong drop in the maximum ?{sub sc} occurs when y{sub int} slightly drops from 1 to 0.9, where the drop in y{sub int} of the bottom cell causes a stronger effect than that of the top cell. For low values of y{sub int}, the maximum ?{sub sc} has a simple logarithmic dependence on the geometric mean of the two sub-cells'y{sub int}.

  4. A Low-cost, High-yield Process for the Direct Productin of High Energy Density Liquid Fuel from Biomass

    SciTech Connect (OSTI)

    Agrawal, Rakesh

    2014-02-21

    The primary objective and outcome of this project was the development and validation of a novel, low-cost, high-pressure fast-hydropyrolysis/hydrodeoxygenation (HDO) process (H{sub 2}Bioil) using supplementary hydrogen (H{sub 2}) to produce liquid hydrocarbons from biomass. The research efforts under the various tasks of the project have culminated in the first experimental demonstration of the H2Bioil process, producing 100% deoxygenated >C4+ hydrocarbons containing 36-40% of the carbon in the feed of pyrolysis products from biomass. The demonstrated H{sub 2}Bioil process technology (i.e. reactor, catalyst, and downstream product recovery) is scalable to a commercial level and is estimated to be economically competitive for the cases when supplementary H{sub 2} is sourced from coal, natural gas, or nuclear. Additionally, energy systems modeling has revealed several process integration options based on the H{sub 2}Bioil process for energy and carbon efficient liquid fuel production. All project tasks and milestones were completed or exceeded. Novel, commercially-scalable, high-pressure reactors for both fast-hydropyrolysis and hydrodeoxygenation were constructed, completing Task A. These reactors were capable of operation under a wide-range of conditions; enabling process studies that lead to identification of optimum process conditions. Model compounds representing biomass pyrolysis products were studied, completing Task B. These studies were critical in identifying and developing HDO catalysts to target specific oxygen functional groups. These process and model compound catalyst studies enabled identification of catalysts that achieved 100% deoxygenation of the real biomass feedstock, sorghum, to form hydrocarbons in high yields as part of Task C. The work completed during this grant has identified and validated the novel and commercially scalable H2Bioil process for production of hydrocarbon fuels from biomass. Studies on model compounds as well as real biomass

  5. Operation Greenhouse. Scientific Director's Report. Annex 1. 12. Long-distance measurement of energy yield of an atomic explosion. Nuclear explosions 1951

    SciTech Connect (OSTI)

    Hudgins, A.J.

    1984-10-31

    The energy yield of an atomic explosion was determined at logn distance by measuring the time variation of the light from the explosion and applying an empirical formula that relates this to the energy yield. The light was detected by an RCA 5819 photomultiplier tube and was recorded on a magnetic-tape recorder. Measurements at Shot Easy were made from A C-54 airplane flying at 12,500 ft at a distance of 630 miles northwest of Eniwetok. The time to the minimum of light intensity was 23.5 + or - 0.8 msec, corresponding to a yield of 53 + or - 4 kt. The yield calculated from the radiochemical measurements was 46.8 + or - 1.0 kt. The peak intensity of the flash above the ambient was measured to be 1.7 millicandles/sq ft. This experiment indicated that energy yield can be measured at a distance greater than 630 miles at night. Possible propagation mechanisms are discussed. Studies of the maximum range in daylight and of improvements in technique are suggested.

  6. Substantial Contribution of Anthropogenic Air Pollution to Catastrophi...

    Office of Scientific and Technical Information (OSTI)

    Substantial Contribution of Anthropogenic Air Pollution to Catastrophic Floods in Southwest China Citation Details In-Document Search Title: Substantial Contribution of ...

  7. Process for preparing superconducting film having substantially uniform phase development

    DOE Patents [OSTI]

    Bharacharya, R.; Parilla, P.A.; Blaugher, R.D.

    1995-12-19

    A process is disclosed for preparing a superconducting film, such as a thallium-barium-calcium-copper oxide superconducting film, having substantially uniform phase development. The process comprises providing an electrodeposition bath having one or more soluble salts of one or more respective potentially superconducting metals in respective amounts adequate to yield a superconducting film upon subsequent appropriate treatment. Should all of the metals required for producing a superconducting film not be made available in the bath, such metals can be a part of the ambient during a subsequent annealing process. A soluble silver salt in an amount between about 0.1% and about 4.0% by weight of the provided other salts is also provided to the bath, and the bath is electrically energized to thereby form a plated film. The film is annealed in ambient conditions suitable to cause formation of a superconductor film. Doping with silver reduces the temperature at which the liquid phase appears during the annealing step, initiates a liquid phase throughout the entire volume of deposited material, and influences the nucleation and growth of the deposited material. 3 figs.

  8. Process for preparing superconducting film having substantially uniform phase development

    DOE Patents [OSTI]

    Bharacharya, Raghuthan; Parilla, Philip A.; Blaugher, Richard D.

    1995-01-01

    A process for preparing a superconducting film, such as a thallium-barium-calcium-copper oxide superconducting film, having substantially uniform phase development. The process comprises providing an electrodeposition bath having one or more soluble salts of one or more respective potentially superconducting metals in respective amounts adequate to yield a superconducting film upon subsequent appropriate treatment. Should all of the metals required for producing a superconducting film not be made available in the bath, such metals can be a part of the ambient during a subsequent annealing process. A soluble silver salt in an amount between about 0.1% and about 4.0% by weight of the provided other salts is also provided to the bath, and the bath is electrically energized to thereby form a plated film. The film is annealed in ambient conditions suitable to cause formation of a superconductor film. Doping with silver reduces the temperature at which the liquid phase appears during the annealing step, initiates a liquid phase throughout the entire volume of deposited material, and influences the nucleation and growth of the deposited material.

  9. Private Company Uses EERE-Supported Chemistry Model to Substantially...

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

    Private Company Uses EERE-Supported Chemistry Model to Substantially Improve Combustion Engine Simulation Software Private Company Uses EERE-Supported Chemistry Model to ...

  10. Recyclable transmission line (RTL) and linear transformer driver (LTD) development for Z-pinch inertial fusion energy (Z-IFE) and high yield.

    SciTech Connect (OSTI)

    Sharpe, Robin Arthur; Kingsep, Alexander S. (Kurchatov Institute, Moscow, Russia); Smith, David Lewis; Olson, Craig Lee; Ottinger, Paul F. (Naval Research Laboratory, Washington, DC); Schumer, Joseph Wade (Naval Research Laboratory, Washington, DC); Welch, Dale Robert (Voss Scientific, Albuquerque, NM); Kim, Alexander (High Currents Institute, Tomsk, Russia); Kulcinski, Gerald L. (University of Wisconsin, Madison, WI); Kammer, Daniel C. (University of Wisconsin, Madison, WI); Rose, David Vincent (Voss Scientific, Albuquerque, NM); Nedoseev, Sergei L. (Kurchatov Institute, Moscow, Russia); Pointon, Timothy David; Smirnov, Valentin P.; Turgeon, Matthew C.; Kalinin, Yuri G. (Kurchatov Institute, Moscow, Russia); Bruner, Nichelle "Nicki" (Voss Scientific, Albuquerque, NM); Barkey, Mark E. (University of Alabama, Tuscaloosa, AL); Guthrie, Michael (University of Wisconsin, Madison, WI); Thoma, Carsten (Voss Scientific, Albuquerque, NM); Genoni, Tom C. (Voss Scientific, Albuquerque, NM); Langston, William L.; Fowler, William E.; Mazarakis, Michael Gerrassimos

    2007-01-01

    Z-Pinch Inertial Fusion Energy (Z-IFE) complements and extends the single-shot z-pinch fusion program on Z to a repetitive, high-yield, power plant scenario that can be used for the production of electricity, transmutation of nuclear waste, and hydrogen production, all with no CO{sub 2} production and no long-lived radioactive nuclear waste. The Z-IFE concept uses a Linear Transformer Driver (LTD) accelerator, and a Recyclable Transmission Line (RTL) to connect the LTD driver to a high-yield fusion target inside a thick-liquid-wall power plant chamber. Results of RTL and LTD research are reported here, that include: (1) The key physics issues for RTLs involve the power flow at the high linear current densities that occur near the target (up to 5 MA/cm). These issues include surface heating, melting, ablation, plasma formation, electron flow, magnetic insulation, conductivity changes, magnetic field diffusion changes, possible ion flow, and RTL mass motion. These issues are studied theoretically, computationally (with the ALEGRA and LSP codes), and will work at 5 MA/cm or higher, with anode-cathode gaps as small as 2 mm. (2) An RTL misalignment sensitivity study has been performed using a 3D circuit model. Results show very small load current variations for significant RTL misalignments. (3) The key structural issues for RTLs involve optimizing the RTL strength (varying shape, ribs, etc.) while minimizing the RTL mass. Optimization studies show RTL mass reductions by factors of three or more. (4) Fabrication and pressure testing of Z-PoP (Proof-of-Principle) size RTLs are successfully reported here. (5) Modeling of the effect of initial RTL imperfections on the buckling pressure has been performed. Results show that the curved RTL offers a much greater buckling pressure as well as less sensitivity to imperfections than three other RTL designs. (6) Repetitive operation of a 0.5 MA, 100 kV, 100 ns, LTD cavity with gas purging between shots and automated operation is

  11. Acid hydrolysis of cellulose to yield glucose

    DOE Patents [OSTI]

    Tsao, George T.; Ladisch, Michael R.; Bose, Arindam

    1979-01-01

    A process to yield glucose from cellulose through acid hydrolysis. Cellulose is recovered from cellulosic materials, preferably by pretreating the cellulosic materials by dissolving the cellulosic materials in Cadoxen or a chelating metal caustic swelling solvent and then precipitating the cellulose therefrom. Hydrolysis is accomplished using an acid, preferably dilute sulfuric acid, and the glucose is yielded substantially without side products. Lignin may be removed either before or after hydrolysis.

  12. Method of sealing an ultracapacitor substantially free of water

    DOE Patents [OSTI]

    Chapman-Irwin, Patricia; Feist, Thomas Paul

    2002-04-02

    A method of sealing an ultracapacitor substantially free of water is disclosed. The method includes providing a multilayer cell comprising two solid, non porous current collectors, separated by two porous electrodes with a separator between the two electrodes, sealing the cell with a reclosable hermetic closure. Water inside the closure is dissociated by an applied voltage to the cell and escapes in the form of hydrogen and oxygen when the closure is unmated, the closure is then mated to hermetically seal the cell which is substantially free of water.

  13. Energy dependence of fission product yields from 235U, 238U and 239Pu for incident neutron energies between 0.5 and 14.8 MeV

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Gooden, M. E.; Arnold, C. W.; Becker, J. A.; Bhatia, C.; Bhike, M.; Bond, E. M.; Bredeweg, T. A.; Fallin, B.; Fowler, M. M.; Howell, C. R.; et al

    2016-01-06

    In this study, Fission Product Yields (FPY) have historically been one of the most observable features of the fission process. They are known to have strong variations that are dependent on the fissioning species, the excitation energy, and the angular momentum of the compound system. However, consistent and systematic studies of the variation of these FPY with energy have proved challenging. This is caused primarily by the nature of the experiments that have traditionally relied on radiochemical procedures to isolate specific fission products. Although radiochemical procedures exist that can isolate all products, each element presents specific challenges and introduces varyingmore » degrees of systematic errors that can make inter-comparison of FPY uncertain. Although of high importance in fields such as nuclear forensics and Stockpile Stewardship, accurate information about the energy dependence of neutron induced FPY are sparse, due primarily to the lack of suitable monoenergetic neutron sources. There is a clear need for improved data, and to address this issue, a collaboration was formed between Los Alamos National Laboratory (LANL), Lawrence Livermore National Laboratory (LLNL) and the Triangle Universities Nuclear Laboratory (TUNL) to measure the energy dependence of FPY for 235U, 238U and 239Pu. The measurements have been performed at TUNL, using a 10 MV Tandem Van de Graaff accelerator to produce monoenergetic neutrons at energies between 0.6 MeV to 14.8 MeV through a variety of reactions. The measurements have utilized a dual-fission chamber, with thin (10-100 μg/cm2) reference foils of similar material to a thick (100-400 mg) activation target held in the center between the chambers. This method allows for the accurate determination of the number of fissions that occurred in the thick target without requiring knowledge of the fission cross section or neutron fluence on target. Following activation, the thick target was removed from the dual

  14. Yield Improvement in Steel Casting (Yield II)

    SciTech Connect (OSTI)

    Richard A. Hardin; Christoph Beckermann; Tim Hays

    2002-02-18

    This report presents work conducted on the following main projects tasks undertaken in the Yield Improvement in Steel Casting research program: Improvement of Conventional Feeding and Risering Methods, Use of Unconventional Yield Improvement Techniques, and Case Studies in Yield Improvement. Casting trials were conducted and then simulated using the precise casting conditions as recorded by the participating SFSA foundries. These results present a statistically meaningful set of experimental data on soundness versus feeding length. Comparisons between these casting trials and casting trials performed more than forty years ago by Pellini and the SFSA are quite good and appear reasonable. Comparisons between the current SFSA feeding rules and feeding rules based on the minimum Niyama criterion reveal that the Niyama-based rules are generally less conservative. The niyama-based rules also agree better with both the trials presented here, and the casting trails performed by Pellini an d the SFSA years ago. Furthermore, the use of the Niyama criterion to predict centerline shrinkage for horizontally fed plate sections has a theoretical basis according to the casting literature reviewed here. These results strongly support the use of improved feeding rules for horizontal plate sections based on the Niyama criterion, which can be tailored to the casting conditions for a given alloy and to a desired level of soundness. The reliability and repeatability of ASTM shrinkage x-ray ratings was investigated in a statistical study performed on 128 x-rays, each of which were rated seven different times. A manual ''Feeding and Risering Guidelines for Steel Castings' is given in this final report. Results of casting trials performed to test unconventional techniques for improving casting yield are presented. These use a stacked arrangement of castings and riser pressurization to increase the casting yield. Riser pressurization was demonstrated to feed a casting up to four time s the

  15. RF Sputtering for preparing substantially pure amorphous silicon monohydride

    DOE Patents [OSTI]

    Jeffrey, Frank R.; Shanks, Howard R.

    1982-10-12

    A process for controlling the dihydride and monohydride bond densities in hydrogenated amorphous silicon produced by reactive rf sputtering of an amorphous silicon target. There is provided a chamber with an amorphous silicon target and a substrate therein with the substrate and the target positioned such that when rf power is applied to the target the substrate is in contact with the sputtering plasma produced thereby. Hydrogen and argon are fed to the chamber and the pressure is reduced in the chamber to a value sufficient to maintain a sputtering plasma therein, and then rf power is applied to the silicon target to provide a power density in the range of from about 7 watts per square inch to about 22 watts per square inch to sputter an amorphous silicon hydride onto the substrate, the dihydride bond density decreasing with an increase in the rf power density. Substantially pure monohydride films may be produced.

  16. Olefins from High Yield Autothermal Reforming Process

    Energy Innovation Portal (Marketing Summaries) [EERE]

    2012-03-06

    The autothermal reforming method employs an improved dehydrogenation process for olefin production, utilizing platinum based dehydrogenation catalysts in the presence of oxygen. The autothermal process requires no external energy input following ignition and produces high conversions and yields from the gaseous hydrocarbon feeds. Autothermal reforming is an effective solution that meets the high demands of the chemical market industry by producing high yields...

  17. Climate change and maize yield in Iowa

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Xu, Hong; Twine, Tracy E.; Girvetz, Evan

    2016-05-24

    Climate is changing across the world, including the major maize-growing state of Iowa in the USA. To maintain crop yields, farmers will need a suite of adaptation strategies, and choice of strategy will depend on how the local to regional climate is expected to change. Here we predict how maize yield might change through the 21st century as compared with late 20th century yields across Iowa, USA, a region representing ideal climate and soils for maize production that contributes substantially to the global maize economy. To account for climate model uncertainty, we drive a dynamic ecosystem model with output frommore » six climate models and two future climate forcing scenarios. Despite a wide range in the predicted amount of warming and change to summer precipitation, all simulations predict a decrease in maize yields from late 20th century to middle and late 21st century ranging from 15% to 50%. Linear regression of all models predicts a 6% state-averaged yield decrease for every 1°C increase in warm season average air temperature. When the influence of moisture stress on crop growth is removed from the model, yield decreases either remain the same or are reduced, depending on predicted changes in warm season precipitation. Lastly, our results suggest that even if maize were to receive all the water it needed, under the strongest climate forcing scenario yields will decline by 10-20% by the end of the 21st century.« less

  18. Caldwell Ranch: Innovative Exploration Technologies Yield Geothermal

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

    Potential | Department of Energy Caldwell Ranch: Innovative Exploration Technologies Yield Geothermal Potential Caldwell Ranch: Innovative Exploration Technologies Yield Geothermal Potential July 11, 2013 - 4:55pm Addthis Photo of a ranch in the mountains. As part of a geothermal exploration effort to search for geothermal resources nationwide, a $5 million U.S. Department of Energy investment to Calpine Corporation this year culminated in the confirmation of an initial 11.4 MW of equivalent

  19. Energy dependence of state-to-state reaction probabilities forH{sub 2} + OH {yields} H + H{sub 2}O in six dimensions

    SciTech Connect (OSTI)

    Dai, J.; Zhu, W.; Zhang, J.Z.H.

    1996-08-15

    We report benchmark time-dependent quantum calculation ofstate-to-state reaction probabilities for the title reaction in fulldimensions (6D) using the widely used Schatz-Elgersma potential energysurface (PES). The time-dependent wave function is propagated using thediatom-diatom Jacobi coordinates and the energy-specific state-to-statereaction probabilities are obtained by using the correlation functionmethod. All results reported here are for reaction resulting from theground state of H{sub 2} + OH to various product states H + H{sub 2}Ofor total angular momentum J = 0. The present calculation shows thatalthough the total reaction probability is a smooth function of energy,the final state-specific reaction probabilities show oscillatorystructures as a function of collision energy for the title reaction. 19refs., 4 figs.

  20. Time-dependent quantum wave packet study of the Ar+H{sub 2}{sup +}{yields}ArH{sup +}+H reaction on a new ab initio potential energy surface for the ground electronic state (1{sup 2}A Prime )

    SciTech Connect (OSTI)

    Hu Mei; Liu Xinguo; Tan Ruishan; Li Hongzheng; Xu Wenwu

    2013-05-07

    A new global potential energy surface for the ground electronic state (1{sup 2}A Prime ) of the Ar+H{sub 2}{sup +}{yields}ArH{sup +}+H reaction has been constructed by multi-reference configuration interaction method with Davidson correction and a basis set of aug-cc-pVQZ. Using 6080 ab initio single-point energies of all the regions for the dynamics, a many-body expansion function form has been used to fit these points. The quantum reactive scattering dynamics calculations taking into account the Coriolis coupling (CC) were carried out on the new potential energy surface over a range of collision energies (0.03-1.0 eV). The reaction probabilities and integral cross sections for the title reaction were calculated. The significance of including the CC quantum scattering calculation has been revealed by the comparison between the CC and the centrifugal sudden approximation calculation. The calculated cross section is in agreement with the experimental result at collision energy 1.0 eV.

  1. Effects of the rotational excitation of D{sub 2} and of the potential energy surface on the H{sup +}+D{sub 2}{yields}HD+D{sup +} reaction

    SciTech Connect (OSTI)

    Gonzalez-Lezana, T. [Instituto de Fisica Fundamental (CSIC), Serrano 123, 28006 Madrid (Spain); Honvault, P. [Institut UTINAM, UMR CNRS 6213 and University of Franche-Comte, Campus de la Bouloie, 25030 Besancon Cedex (France); Jambrina, P. G. [Departamento de Quimica Fisica, Facultad de Ciencias Quimicas, Universidad de Salamanca, 37008 Salamanca (Spain); Departamento de Quimica Fisica I, Facultad de Quimica, Universidad Complutense, 28040 Madrid (Spain); Aoiz, F. J. [Departamento de Quimica Fisica I, Facultad de Quimica, Universidad Complutense, 28040 Madrid (Spain); Launay, J.-M. [Institute de Physique de Rennes, UMR CNRS 6251, University of Rennes 1, Campus de Beaulieu, 35042 Rennes Cedex (France)

    2009-07-28

    The H{sup +}+D{sub 2}{yields}HD+D{sup +} reaction has been theoretically investigated by means of an exact quantum mechanical approach, a quasiclassical trajectory method, and two statistical methods based in the propagation of either wave functions or trajectories. The study addresses the possible changes on the overall dynamics of the title reaction when the D{sub 2} diatom is rotationally excited to its v=0, j=1 state. In addition, the reactivity for the ground rotational state on two different potential energy surfaces (PESs), namely, the surface by Aguado et al. [J. Chem. Phys. 112, 1240 (2000)] and the PES by Kamisaka et al. [J. Chem. Phys. 116, 654 (2002)], is examined. Reaction probabilities and cross sections at 0.524 and 0.1 eV collision energies are calculated. The major differences with respect to the reaction initiated with D{sub 2} in its ground rovibrational state are observed for the lowest collision energy E{sub c}=0.1 eV. Differential cross sections have been found to depend to some extend on the PES employed. In addition, at E{sub c}=0.1 eV further discrepancies in the total and rotational cross sections are noticeable.

  2. Substantial Transformation

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

    create a material that has different properties than the properties of the individual raw materials." See 2 C.F.R. 176.140(a)(1). The OMB guidelines further define a "domestic...

  3. Drilling ban yields verdict

    SciTech Connect (OSTI)

    Nation, L.M.

    1992-01-01

    This paper briefly reviews a lawsuit which is under appeal by the State of Michigan regarding a takings claim filed over a petroleum exploration site. The dispute arose as a result of a 1987 decision by the Michigan Department of Natural Resources forbidding the property owners from developing the mineral rights leased to Miller Brothers in the Huron/Manistee National Forest. This area is bisected by a trend of Silurian Niagaran reef complexes which has a known production history throughout the State. The dunes area of the national forest has been deemed a wilderness area. As a result of the State's decision, the courts have awarded a sum of 71 million dollars to the developer to cover damages and lost resources. The reserve estimates were taken from adjacent areas which showed that the Niagaran reefs are relatively consistent in their yield.

  4. New Tool Yields Custom Environmental Data for Lifecycle Analysis |

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

    Department of Energy Tool Yields Custom Environmental Data for Lifecycle Analysis New Tool Yields Custom Environmental Data for Lifecycle Analysis September 10, 2012 - 1:00pm Addthis Washington, DC - A new, free online tool developed by a Department of Energy (DOE) laboratory allows users to customize and analyze the environmental impact of various fuels before they are used to create power. Information from the Excel™-based Upstream Dashboard - developed by the Office of Fossil Energy's

  5. Alloy substantially free of dendrites and method of forming the same

    DOE Patents [OSTI]

    de Figueredo, Anacleto M.; Apelian, Diran; Findon, Matt M.; Saddock, Nicholas

    2009-04-07

    Described herein are alloys substantially free of dendrites. A method includes forming an alloy substantially free of dendrites. A superheated alloy is cooled to form a nucleated alloy. The temperature of the nucleated alloy is controlled to prevent the nuclei from melting. The nucleated alloy is mixed to distribute the nuclei throughout the alloy. The nucleated alloy is cooled with nuclei distributed throughout.

  6. Energy Storage | Department of Energy

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

    Thus, energy storage and power electronics hold substantial promise for transforming the electric power industry. High voltage power electronics, such as switches, inverters, and ...

  7. Comparison of oilseed yields: a preliminary review

    SciTech Connect (OSTI)

    Duke, J.A.; Bagby, M.O.

    1982-01-01

    It was assumed that for most oilseed crops, 90% of the oil yield might be considered as profit. To compare oil seeds, pertinent portions of the yield and energy paragraphs from a summary published by Dr. Duke for DOE Grant No. 59-2246-1-6-054-0 with Dr. Bagby as ADODR were reproduced. The seed yields ranged from 200 to 14,000 kg/ha, the low one too low to consider and the high one suspiciously high. The yield of 14,000 kg oil per hectare is equivalent to more than 30 barrels of oil per hectare. The energy species included ambrette, tung-oil tree, cashew, wood-oil tree, mu-oil tree, peanut, mustard greens; rape, colza; black mustard, turnip, safflower, colocynth, coconut, crambe, African oil palm, soybean, cotton, sunflower, Eastern black walnut, Engligh walnut, meadow foam, flax, macadamia nuts, opium poppy, perilla, almond, castorbean, Chinese tallow tree, sesame, jojoba, yellow mustard, stokes' aster, and Zanzibar oilvine. 1 table. (DP)

  8. Material and methods to increase plant growth and yield

    SciTech Connect (OSTI)

    Kirst, Matias

    2015-09-15

    The present invention relates to materials and methods for modulating growth rates, yield, and/or resistance to drought conditions in plants. In one embodiment, a method of the invention comprises increasing expression of an hc1 gene (or a homolog thereof that provides for substantially the same activity), or increasing expression or activity of the protein encoded by an hc1 gene thereof, in a plant, wherein expression of the hc1 gene or expression or activity of the protein encoded by an hc1 gene results in increased growth rate, yield, and/or drought resistance in the plant.

  9. NSRD-06. Computational Capability to Substantiate DOE-HDBK-3010 Data

    SciTech Connect (OSTI)

    Louie, David L.Y.; Brown, Alexander L.

    2015-12-01

    Safety basis analysts throughout the U.S. Department of Energy (DOE) complex rely heavily on the information provided in the DOE Hand book, DOE-HDBK-3010, Airborne Release Fractions/Rates and Resp irable Fractions for Nonreactor Nuclear Facilities , to determine source terms. In calcula ting source terms, analysts tend to use the DOE Handbook's bounding values on airbor ne release fractions (ARFs) and respirable fractions (RFs) for various cat egories of insults (representing potential accident release categories). This is typica lly due to both time constraints and the avoidance of regulatory critique. Unfort unately, these bounding ARFs/RFs represent extremely conservative values. Moreover, th ey were derived from very limited small- scale table-top and bench/labo ratory experiments and/or fr om engineered judgment. Thus the basis for the data may not be re presentative to the actual unique accident conditions and configura tions being evaluated. The goal of this res earch is to develop a more ac curate method to identify bounding values for the DOE Handbook using the st ate-of-art multi-physics-based high performance computer codes. This enable s us to better understand the fundamental physics and phenomena associated with the ty pes of accidents for the data described in it. This research has examined two of the DOE Handbook's liquid fire experiments to substantiate the airborne release frac tion data. We found th at additional physical phenomena (i.e., resuspension) need to be included to derive bounding values. For the specific cases of solid powder under pre ssurized condition and mechanical insult conditions the codes demonstrated that we can simulate the phenomena. This work thus provides a low-cost method to establis h physics-justified sa fety bounds by taking into account specific geometri es and conditions that may not have been previously measured and/or are too costly to do so.

  10. Controlled-release fertilizer composition substantially coated with an impermeable layer

    DOE Patents [OSTI]

    Ankeny, Mark

    2016-03-29

    A controlled-release fertilizer composition is provided that is substantially coated with an impermeable layer. The fertilizer composition may further include one or more hollow sections to allow for root penetration and efficient delivery of nutrients.

  11. Increasing Sugar Yields with IL-final-sm

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

    Ionic Liquid Processing Increasing sugar yields from diverse biomass feedstock with ionic liquid processing and cultivation of renewable ionic liquids Liberating Sugars from Biomass Lignocellulose, one of the most abundant plants on Earth, has the potential to displace a substantial portion of the fossil fuels currently consumed within the transportation sector. Converting lignocellulose to biofuels requires the disruption of the lignin-carbohydrate complex within the plant and conversion into

  12. Recycling Energy Yields Super Savings | Department of Energy

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

    In 2013, with help from RED, the plant will capture its waste heat with dynamic results ... pollutants, yet it will generate power for less than the cost of new coal-fired generation. ...

  13. Temperature limited heater with a conduit substantially electrically isolated from the formation

    DOE Patents [OSTI]

    Vinegar, Harold J.; Sandberg, Chester Ledlie

    2009-07-14

    A system for heating a hydrocarbon containing formation is described. A conduit may be located in an opening in the formation. The conduit includes ferromagnetic material. An electrical conductor is positioned inside the conduit, and is electrically coupled to the conduit at or near an end portion of the conduit so that the electrical conductor and the conduit are electrically coupled in series. Electrical current flows in the electrical conductor in a substantially opposite direction to electrical current flow in the conduit during application of electrical current to the system. The flow of electrons is substantially confined to the inside of the conduit by the electromagnetic field generated from electrical current flow in the electrical conductor so that the outside surface of the conduit is at or near substantially zero potential at 25.degree. C. The conduit may generate heat and heat the formation during application of electrical current.

  14. Process for forming one or more substantially pure layers in substrate material using ion implantation

    DOE Patents [OSTI]

    Musket, Ronald G.; Brown, David W.; Munir, Zuhair A.

    1990-01-01

    A process is disclosed for forming a substantially pure layer of an implantable element in a substrate material by (a) selecting an implantable element and a substrate material to be implanted which, at the temperatures to be used, have limited mutual solubility in one another and do not form any intermediate phases with one another; (b) implanting a sufficient amount of the implantable element in the substrate material to permit formation of the desired substantially pure layer of the implantable element in the substrate material; and (c) annealing the implanted substrate material to form the desired layer. The annealing step may not be required if the desired layer was formed during the implantation.

  15. Energy

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

    Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Energy Defense Waste Management Programs Advanced Nuclear Energy Nuclear Energy

  16. Energy

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

    2 - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Energy Defense Waste Management Programs Advanced Nuclear Energy Nuclear

  17. Energy

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

    3 - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Energy Defense Waste Management Programs Advanced Nuclear Energy Nuclear

  18. Executive Summary High-Yield Scenario Workshop Series Report

    SciTech Connect (OSTI)

    Leslie Park Ovard; Thomas H. Ulrich; David J. Muth Jr.; J. Richard Hess; Steven Thomas; Bryce Stokes

    2009-12-01

    To get a collective sense of the impact of research and development (R&D) on biomass resource availability, and to determine the feasibility that yields higher than baseline assumptions used for past assessments could be achieved to support U.S. energy independence, an alternate High-Yield Scenario (HYS) concept was presented to industry experts at a series of workshops held in December 2009. The workshops explored future production of corn/agricultural crop residues, herbaceous energy crops (HECs), and woody energy crops (WECs). This executive summary reports the findings of that workshop.

  19. Approach to compliance with the NRC substantially complete containment requirement at the potential repository at Yucca Mountain

    SciTech Connect (OSTI)

    Stahl, D.; Nesbit, S.P.; Berkowitz, L.

    1995-12-01

    An approach to compliance with the U.S. Nuclear Regulatory Commission (NRC) substantially complete containment (SCC) requirement found in the Title 10 Part 60 of the Code of Federal Regulations (CFR) was developed by the Department of Energy (DOE). The approach is consistent with the regulation and is based on a new performance goal of a mean waste-package lifetime well in excess of 1,000 years. The NRC considers that achieving the DOE goal would be a reasonable implementation of the SCC requirement. The NRC has asked several additional questions. The DOE has responded to these questions and the DOE and the NRC are engaged in an ongoing dialog to resolve them.

  20. Yield Line Evaluation Methodology for Reinforced Concrete Structures

    Energy Science and Technology Software Center (OSTI)

    1998-12-30

    Yield line theory is an analytical technique that can be used to determine the ultimate bending capacity of flat reinforced concrete plates subject to distributed and concentrated loadings. Alternately, yield line theory, combined with rotation limits can be used to determine the energy absorption capacity of plates subject to impulsive and impact loadings. Typical components analyzed by yield line theory are basemats, floor and roof slabs subject to vertical loads along with walls subject tomore » out of plane loadings. One limitation of yield line theory is that it is computationally difficult to evaluate some mechanisms. This problem is aggravated by the complex geometry and reinforcing layouts commonly found in practice. The program has the capability to either evaluate a single user defined mechanism or to iterate over a range of mechanisms to determine the minimum ultimate capacity. The program is verified by comparison to a series of yield line mechanisms with known solutions.« less

  1. Process for forming one or more substantially pure layers in substrate material using ion implantation

    DOE Patents [OSTI]

    Musket, Ronald G.; Brown, David W.; Munir, Zuhair A.

    1992-01-01

    A process is disclosed for forming a substantially pure monocrystalline layer of an implantable element in a monocrystalline substrate material by (a) selecting an implantable element and a monocrystalline substrate material to be implanted which, at the temperatures to be used, have limited mutual solubility in one another and do not form any intermediate phases with one another; (b) implanting a sufficient amount of the implantable element in the substrate material to permit formation of the desired substantially pure layer of the implantable element in the substrate material; and (c) annealing the implanted substrate material to form the desired layer. The annealing step may not be required if the desired layer was formed during the implantation. Also disclosed is an article made by the process.

  2. Process for forming one or more substantially pure layers in substrate material using ion implantation

    DOE Patents [OSTI]

    Musket, R.G.; Brown, D.W.; Munir, Z.A.

    1990-12-11

    A process is disclosed for forming a substantially pure layer of an implantable element in a substrate material by (a) selecting an implantable element and a substrate material to be implanted which, at the temperatures to be used, have limited mutual solubility in one another and do not form any intermediate phases with one another; (b) implanting a sufficient amount of the implantable element in the substrate material to permit formation of the desired substantially pure layer of the implantable element in the substrate material; and (c) annealing the implanted substrate material to form the desired layer. The annealing step may not be required if the desired layer was formed during the implantation. 2 figs.

  3. 2D Monolayers Could Yield Thinnest Solar Cells Ever

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

    Thinnest solar cells ever 2D Monolayers Could Yield Thinnest Solar Cells Ever October 21, 2013 Contact: Kathy Kincade, +1 510 495 2124, kkincade@lbl.gov Efforts to improve solar cells have historically focused on improving energy conversion efficiencies and lowering manufacturing costs. But new computer simulations have shown how using a different type of material could yield thinner, more lightweight solar panels that provide power densities - watts per kilogram of material - orders of

  4. Plasmonic light yield enhancement of a liquid scintillator

    SciTech Connect (OSTI)

    Bignell, Lindsey J.; Jackson, Timothy W.; Mume, Eskender; Center of Excellence in Anti-matter Matter Studies, Research School of Physics and Engineering, The Australian National University, Canberra ; Lee, George P.

    2013-05-27

    We demonstrate modifications to the light yield properties of an organic liquid scintillator due to the localization of the tertiary fluorophore component to the surface of Ag-core silica-shell nanoparticles. We attribute this enhancement to the near-field interaction of Ag nanoparticle plasmons with these fluor molecules. The scintillation light yield enhancement is shown to be equal to the fluorescence enhancement within measurement uncertainties. With a suitable choice of plasmon energy and scintillation fluor, this effect may be used to engineer scintillators with enhanced light yields for radiation detection applications.

  5. Method for the substantial reduction of quenching effects in luminescence spectrometry

    DOE Patents [OSTI]

    Demas, J.N.; Jones, W.M.; Keller, R.A.

    1987-06-26

    Method for reducing quenching effects in analytical luminescence measurements. Two embodiments of the present invention are described which relate to a form of time resolution based on the amplitudes and phase shifts of modulated emission signals. In the first embodiment, the measured modulated emission signal is substantially independent of sample quenching at sufficiently high frequencies. In the second embodiment, the modulated amplitude and the phase shift between the emission signal and the excitation source are simultaneously measured. Using either method, the observed modulated amplitude may be reduced to its unquenched value. 3 figs.

  6. Method for the substantial reduction of quenching effects in luminescence spectrometry

    DOE Patents [OSTI]

    Demas, James N.; Jones, Wesley M.; Keller, Richard A.

    1989-01-01

    Method for reducing quenching effects in analytical luminescence measurements. Two embodiments of the present invention are described which relate to a form of time resolution based on the amplitudes and phase shifts of modulated emission signals. In the first embodiment, the measured modulated emission signal is substantially independent of sample quenching at sufficiently high frequenices. In the second embodiment, the modulated amplitude and the phase shift between the emission signal and the excitation source are simultaneously measured. Using either method, the observed modulated amplitude may reduced to tis unquenched value.

  7. Energy Department Releases Draft Advanced Fossil Energy Solicitation...

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

    fossil energy projects and facilities that substantially reduce greenhouse gas and other air pollution. The Advanced Fossil Energy Projects solicitation, authorized by Title XVII...

  8. Aluminum processing energy benchmark report

    SciTech Connect (OSTI)

    None, None

    2007-02-01

    Substantial energy efficiency gains have been made in the aluminum industry over the past forty years, resulting in a 58 percent decrease in energy utilization.

  9. Evaluation and compilation of fission product yields 1993

    SciTech Connect (OSTI)

    England, T.R.; Rider, B.F.

    1995-12-31

    This document is the latest in a series of compilations of fission yield data. Fission yield measurements reported in the open literature and calculated charge distributions have been used to produce a recommended set of yields for the fission products. The original data with reference sources, and the recommended yields axe presented in tabular form. These include many nuclides which fission by neutrons at several energies. These energies include thermal energies (T), fission spectrum energies (F), 14 meV High Energy (H or HE), and spontaneous fission (S), in six sets of ten each. Set A includes U235T, U235F, U235HE, U238F, U238HE, Pu239T, Pu239F, Pu241T, U233T, Th232F. Set B includes U233F, U233HE, U236F, Pu239H, Pu240F, Pu241F, Pu242F, Th232H, Np237F, Cf252S. Set C includes U234F, U237F, Pu240H, U234HE, U236HE, Pu238F, Am241F, Am243F, Np238F, Cm242F. Set D includes Th227T, Th229T, Pa231F, Am241T, Am241H, Am242MT, Cm245T, Cf249T, Cf251T, Es254T. Set E includes Cf250S, Cm244S, Cm248S, Es253S, Fm254S, Fm255T, Fm256S, Np237H, U232T, U238S. Set F includes Cm243T, Cm246S, Cm243F, Cm244F, Cm246F, Cm248F, Pu242H, Np237T, Pu240T, and Pu242T to complete fission product yield evaluations for 60 fissioning systems in all. This report also serves as the primary documentation for the second evaluation of yields in ENDF/B-VI released in 1993.

  10. ENERGY

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

    U.S. Department of ENERGY Department of Energy Quadrennial Technology Review-2015 Framing Document http:energy.govqtr 2015-01-13 Page 2 The United States faces serious ...

  11. Declassification of the Yields of 11 Nuclear Tests Conducted as Part

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

    Declassification of the Yields of 11 Nuclear Tests Conducted as Part of the Plowshare Peaceful Uses for Nuclear Explosives Program The Department of Energy and the Department of Defense have jointly declassified the specific yields of 11 nuclear tests conducted between 1962 and 1968 at the Nevada Test Site, including three tests that, as previously announced, leaked radioactivity. Also declassified are the yields of two detonations that, together with another detonation whose yield has already

  12. Substantially self-powered method and apparatus for recovering hydrocarbons from hydrocarbon-containing solid hydrates

    DOE Patents [OSTI]

    Elliott, Guy R. B. (Los Alamos, NM); Barraclough, Bruce L. (Santa Fe, NM); Vanderborgh, Nicholas E. (Los Alamos, NM)

    1983-01-01

    A method and apparatus are provided for producing gaseous hydrocarbons from formations comprising solid hydrocarbon hydrates located under either a body of land or a body of water. The vast natural resources of such hydrocarbon hydrates can thus now be economically mined. Relatively warm brine or water is brought down from an elevation above that of the hydrates through a portion of the apparatus and passes in contact with the hydrates, thus melting them. The liquid then continues up another portion of the apparatus, carrying entrained hydrocarbon vapors in the form of bubbles, which can easily be separated from the liquid. After a short startup procedure, the process and apparatus are substantially self-powered.

  13. Substantially self-powered method and apparatus for recovering hydrocarbons from hydrocarbon-containing solid hydrates

    DOE Patents [OSTI]

    Elliott, G.R.B.; Barraclough, B.L.; Vanderborgh, N.E.

    1981-02-19

    A method and apparatus are provided for producing gaseous hydrocarbons from formations comprising solid hydrocarbon hydrates located under either a body of land or a body of water. The vast natural resources of such hydrocarbon hydrates can thus now be economically mined. Relatively warm brine or water is brought down from an elevation above that of the hydrates through a portion of the apparatus, and passes in contact with the hydrates, thus melting them. The liquid then continues up another portion of the apparatus carrying entrained hydrocarbon vapors in the form of bubbles, which can easily be separated from the liquid. After a short startup procedure, the process and apparatus are substantially self-powered.

  14. Steve Capanna | Department of Energy

    Office of Environmental Management (EM)

    Capanna - Director, Policy and Analysis, Office of Energy Efficiency and Renewable Energy Most Recent New Study: Renewable Energy for State Renewable Portfolio Standards Yield...

  15. Energy

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

    Energy Energy National security depends on science and technology. The United States relies on Los Alamos National Laboratory for the best of both. No place on Earth pursues a broader array of world-class scientific endeavors. Energy Overview Charlie McMillan, Director of Los Alamos National Laboratory 0:50 Director McMillan on energy security With energy use increasing across the nation and the world, Los Alamos National Laboratory is using its world-class scientific capabilities to enhance

  16. Semi-exclusive structure functions and inclusive form factors for ed{yields}e{sup '}{pi}NN in the energy region from threshold up to 500 MeV

    SciTech Connect (OSTI)

    Darwish, E.M. Al-Thoyaib, S.S.

    2009-08-15

    The separated structure functions R{sub L}, R{sub T}, R{sub LT}, and R{sub TT} governing the semi-exclusive differential cross section for the d(e,e{sup '}{pi})NN reaction are evaluated in the energy region from threshold up to 500 MeV. We present results for both the neutral and the charged pion production channels in a variety of kinematic settings. For the elementary pion electroproduction operator, the realistic unitary isobar MAID-2003 model is used which gives a good description of the process on the free nucleon. The completely inclusive form factors, which determine the inclusive differential cross section when only the scattered electron is detected, are also computed. It has been found that the structure functions and form factors reveal clear differences between the production dynamics for the {pi}{sup 0} and {pi}{sup {+-}} pions. Considerable dependencies of the structure functions and form factors on the pion angle and virtual photon lab-energy are found. The predicted results are found to be insensitive to the potential model used for the deuteron wave function.

  17. Technical considerations for evaluating substantially complete containment of high-level waste within the waste package

    SciTech Connect (OSTI)

    Manaktala, H.K. . Center for Nuclear Waste Regulatory Analyses); Interrante, C.G. . Div. of High-Level Waste Management)

    1990-12-01

    This report deals with technical information that is considered essential for demonstrating the ability of the high-level radioactive waste package to provide substantially complete containment'' of its contents (vitrified waste form or spent light-water reactor fuel) for a period of 300 to 1000 years in a geological repository environment. The discussion is centered around technical considerations of the repository environment, materials and fabrication processes for the waste package components, various degradation modes of the materials of construction of the waste packages, and inspection and monitoring of the waste package during the preclosure and retrievability period, which could begin up to 50 years after initiation of waste emplacement. The emphasis in this report is on metallic materials. However, brief references have been made to other materials such as ceramics, graphite, bonded ceramic-metal systems, and other types of composites. The content of this report was presented to an external peer review panel of nine members at a workshop held at the Center for Nuclear Waste Regulatory Analyses (CNWRA), Southwest Research Institute, San Antonio, Texas, April 2--4, 1990. The recommendations of the peer review panel have been incorporated in this report. There are two companion reports; the second report in the series provides state-of-the-art techniques for uncertainty evaluations. 97 refs., 1 fig.

  18. Research Leads to Improved Fuel Yields from Smaller Antenna Algae |

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

    Department of Energy Research Leads to Improved Fuel Yields from Smaller Antenna Algae Research Leads to Improved Fuel Yields from Smaller Antenna Algae May 13, 2014 - 12:06pm Addthis Tasios Melis (center) shows plates with tla3 algae and its parent strain to Katie Randolph (left) and Sunita Satyapal during a site visit to his lab at the University of California, Berkeley. Tasios Melis (center) shows plates with tla3 algae and its parent strain to Katie Randolph (left) and Sunita Satyapal

  19. Nuclear reaction products that would appear if substantial cold fusion occurred

    SciTech Connect (OSTI)

    Mueller, D.; Grisham, L.R. . Plasma Physics Lab.)

    1989-11-01

    This paper reports on recent claims of net energy production by cold fusion that have prompted an examination of all the positive Q value, two-body nuclear reactions that might result from the fusion of any of the isotopes in the apparatus used by Fleischmann and Pons. Any energy production that may result from cold fusion would be accompanied by copious production of nuclear reaction products (on the order of 10{sup 13}/s). Furthermore, the elementary properties of the alpha particle at the deuteron + deuteron threshold are discussed. An important property of the alpha at this high excitation is its nearly prompt (10{sup {minus}20} s) decay by particle emission to {sup 3}He + n or triton + proton.

  20. Wnt5a signaling is a substantial constituent in bone morphogenetic protein-2-mediated osteoblastogenesis

    SciTech Connect (OSTI)

    Nemoto, Eiji; Ebe, Yukari; Kanaya, Sousuke; Tsuchiya, Masahiro; Nakamura, Takashi; Tamura, Masato; Shimauchi, Hidetoshi

    2012-06-15

    Highlights: Black-Right-Pointing-Pointer Wnt5a is identified in osteoblasts in tibial growth plate and bone marrow. Black-Right-Pointing-Pointer Osteoblastic differentiation is associated with increased expression of Wnt5a/Ror2. Black-Right-Pointing-Pointer Wnt5a/Ror2 signaling is important for BMP-2-mediated osteoblastic differentiation. Black-Right-Pointing-Pointer Wnt5a/Ror2 operates independently of BMP-Smad pathway. -- Abstract: Wnts are secreted glycoproteins that mediate developmental and post-developmental physiology by regulating cellular processes including proliferation, differentiation, and apoptosis through {beta}-catenin-dependent canonical and {beta}-catenin-independent noncanonical pathway. It has been reported that Wnt5a activates noncanonical Wnt signaling through receptor tyrosine kinase-like orphan receptor 2 (Ror2). Although it appears that Wnt5a/Ror2 signaling supports normal bone physiology, the biological significance of noncanonical Wnts in osteogenesis is essentially unknown. In this study, we identified expression of Wnt5a in osteoblasts in the ossification zone of the tibial growth plate as well as bone marrow of the rat tibia as assessed by immunohistochemistry. In addition, we show that osteoblastic differentiation mediated by BMP-2 is associated with increased expression of Wnt5a and Ror2 using cultured pre-osteoblasts, MC3T3-E1 cells. Silencing gene expression of Wnt5a and Ror2 in MC3T3-E1 cells results in suppression of BMP-2-mediated osteoblastic differentiation, suggesting that Wnt5a and Ror2 signaling are of substantial importance for BMP-2-mediated osteoblastic differentiation. BMP-2 stimulation induced phosphorylation of Smad1/5/8 in a similar fashion in both siWnt5a-treated cells and control cells, suggesting that Wnt5a was dispensable for the phosphorylation of Smads by BMP-2. Taken together, our results suggest that Wnt5a/Ror2 signaling appears to be involved in BMP-2-mediated osteoblast differentiation in a Smad independent

  1. Energy

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

    Energy Energy Research into alternative forms of energy, and improving and securing the power grid, is a major national security imperative. News Releases Science Briefs Photos Picture of the Week Publications Social Media Videos Fact Sheets Pajarito Powder, LLC, a fuel-cell-catalyst company based in Albuquerque, is one of the voucher recipients that will partner with Los Alamos. Fuel-cell technology companies win small-business aid Pajarito Powder, LLC, (Albuquerque), NanoSonic (Pembroke, Va.)

  2. Energy

    Office of Legacy Management (LM)

    ..) ".. _,; ,' . ' , ,; Depar?.me.nt ,of.' Energy Washington; DC 20585 : . ' , - $$ o"\ ' ~' ,' DEC ?;$ ;y4,,, ~ ' .~ The Honorable John Kalwitz , 200 E. Wells Street Milwaukee, W~isconsin 53202, . . i :. Dear,Mayor 'Kalwitz: " . " Secretary of Energy Hazel' O'Leary has announceha new,approach 'to,openness in " the Department of Ene~rgy (DOE) and its communications with'the public. In -. support of~this initiative, we areipleased to forward the enclosed information

  3. Method and apparatus for sampling low-yield wells

    DOE Patents [OSTI]

    Last, George V.; Lanigan, David C.

    2003-04-15

    An apparatus and method for collecting a sample from a low-yield well or perched aquifer includes a pump and a controller responsive to water level sensors for filling a sample reservoir. The controller activates the pump to fill the reservoir when the water level in the well reaches a high level as indicated by the sensor. The controller deactivates the pump when the water level reaches a lower level as indicated by the sensors. The pump continuously activates and deactivates the pump until the sample reservoir is filled with a desired volume, as indicated by a reservoir sensor. At the beginning of each activation cycle, the controller optionally can select to purge an initial quantity of water prior to filling the sample reservoir. The reservoir can be substantially devoid of air and the pump is a low volumetric flow rate pump. Both the pump and the reservoir can be located either inside or outside the well.

  4. Observation of Cleavage Fracture after Substantial Dimple Rupture in ASTM A710 Steel

    SciTech Connect (OSTI)

    Reuter, Walter Graham; Lloyd, Wilson Randolph

    2000-07-01

    A major concern often arising in structural integrity predictions is the possibility that low-energy brittle fracture could result as a consequence of cleavage either under normal operating or design accident conditions. This can be especially troublesome when the leak-before-break (LBB) approach shows an additional safety margin of the design. For LBB to be applicable, the fracture process must remain ductile (dimple rupture), and not change to cleavage. The American Society for Mechanical Engineers Boiler and Pressure Vessel Code (Code) provides guidelines for avoiding cleavage fracture for Code-accepted materials. Experimental results for a non-Code steel are provided, and show that cleavage may occur for a thickness under16 mm (where the code suggests it will not) after stable crack growth (?a) of up to 20 mm. This work is still in progress; test results are provided along with possible reasons for the mode transition, but complete explanations are still being developed.

  5. Nuclear Physics Accelerator Technology Yields New Process for Producing

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

    Boron-Nitride Nanotubes | U.S. DOE Office of Science (SC) Nuclear Physics Accelerator Technology Yields New Process for Producing Boron-Nitride Nanotubes Nuclear Physics (NP) NP Home About Research Facilities Science Highlights Benefits of NP Funding Opportunities Nuclear Science Advisory Committee (NSAC) Community Resources Contact Information Nuclear Physics U.S. Department of Energy SC-26/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-3613 F: (301)

  6. Comparison of Real World Energy Consumption to Models and DOE...

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

    Then, the study determines whether real world energy consumption differed substantially ... Comparison of Real World Energy Consumption to Models and Department of Energy Test ...

  7. Clean Energy Manufacturing Initiative | Department of Energy

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

    Industrial efficiency and low-cost energy resources are key ... and support further innovation, the time to invest in ... risk, improve quality, increase yields, and lower costs. ...

  8. Energy

    Annual Energy Outlook [U.S. Energy Information Administration (EIA)]

    M onthly Energy Re< view Ila A a m 0 II 8 IIIW *g U In this issue: New data on nuclear electricity in Eastern Europe (Table 10.4) 9'Ij a - Ordering Information This publication...

  9. Substantial Contribution of Anthropogenic Air Pollution to Catastrophic Floods in Southwest China

    SciTech Connect (OSTI)

    Fan, Jiwen; Rosenfeld, Daniel; Yang, Yan; Zhao, Chun; Leung, Lai-Yung R.; Li, Zhanqing

    2015-07-20

    Extreme events such as heat waves, floods, and droughts, have become more frequent since the 1950s1-2. This is likely caused through changes in greenhouse gases and aerosols that perturb the radiative balance and alter cloud processes3-8. On 8-9 July, 2013 a catastrophic flood devastated several metropolitan areas at the foothills of the Sichuan Basin. Using a high-resolution coupled atmosphere-chemistry model, we show that this disaster was not entirely natural. Ensemble simulations robustly show that the severe anthropogenic pollution in the Sichuan Basin significantly enhanced rainfall intensity over the mountainous area northwest of the basin. The heavy air pollution (mainly black carbon) absorbs solar radiation in the lower atmosphere at the expense of surface cooling, which stabilizes the atmosphere and suppresses convection and precipitation over the basin. The enhanced moisture and moist static energy over the basin are then transported by the prevailing winds towards the mountains during daytime. As the excessive moist air that reaches the foothills at night is orographically lifted, very strong convection develops and produces extremely heavy precipitation. Reducing black carbon (BC) emissions in the basin can effectively mitigate the extreme precipitation in the mountains. Unfortunately, BC emissions have been increasing in many developing countries including China9, making them more vulnerable to enhanced disasters as reported here.

  10. Behavior Based Energy Efficiency (BBEE)

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

    on encouraging the adoption of energy efficient technology. There is a substantial body of knowledge and experience associated with behavior change that is rooted in the...

  11. Microbial Electrolysis Cells (MECs) for High Yield Hydrogen (H2) Production

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

    from Biodegradable Materials | Department of Energy Electrolysis Cells (MECs) for High Yield Hydrogen (H2) Production from Biodegradable Materials Microbial Electrolysis Cells (MECs) for High Yield Hydrogen (H2) Production from Biodegradable Materials Presentation by Jason Ren, University of Colorado Boulder, at the Biological Hydrogen Production Workshop held September 24-25, 2013, at the National Renewable Energy Laboratory in Golden, Colorado. bio_h2_workshop_ren.pdf (437.03 KB) More

  12. High-Yield Hybrid Cellulosic Ethanol

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

    Hig gh-Yield Hy ybrid Cellulosic Ethanol Process Using High-Impact Feedstock WBS 5.5.11.1 ... Markets Poplar C2 Platform End Markets Ethanol Acetic Acid Ethylene Vinyl Acetate 2 ...

  13. Measurement of Pressure Dependent Fluorescence Yield of Air: Calibration Factor for UHECR Detectors

    SciTech Connect (OSTI)

    Belz, J.W.; Burt, G.W.; Cao, Z.; Chang, F.Y.; Chen, C.C.; Chen, C.W.; Chen, P.; Field, C.; Findlay, J.; Huntemeyer, Petra; Huang, M.A.; Hwang, W.-Y.P.; Iverson, R.; Jones, B.F.; Jui, C.C.H.; Kirn, M.; Lin, G.-L.; Loh, E.C.; Maestas, M.M.; Manago, N.; Martens, K.; /Montana U. /Utah U. /Taiwan, Natl. Taiwan U. /SLAC /Rutgers U., Piscataway

    2005-07-06

    In a test experiment at the Final Focus Test Beam of the Stanford Linear Accelerator Center, the fluorescence yield of 28.5 GeV electrons in air and nitrogen was measured. The measured photon yields between 300 and 400 nm at 1 atm and 29 C are Y(760 Torr){sup air} = 4.42 {+-} 0.73 and Y(760 Torr){sup N{sub 2}} = 29.2 {+-} 4.8 photons per electron per meter. Assuming that the fluorescence yield is proportional to the energy deposition of a charged particle traveling through air, good agreement with measurements at lower particle energies is observed.

  14. Scintillator yields glimpse of elusive solar neutrinos

    SciTech Connect (OSTI)

    Smart, Ashley G.

    2014-11-01

    The low-energy neutrinos are byproducts of the first reaction in a chain that generates 99% of the Sun’s energy.

  15. News | Department of Energy

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

    on flexible plastic substrates. Credit: Oak Ridge National Lab Innovative, Lower Cost Sensors and Controls Yield Better Energy Efficiency ORNL's new wireless sensor...

  16. Radiant energy collector

    DOE Patents [OSTI]

    Winston, Roland

    1977-01-11

    An electromagnetic energy collection device is provided which does not require a solar tracking capability. It includes an energy receiver positioned between two side walls which reflect substantially all incident energy received over a predetermined included angle directly onto the energy receiver.

  17. Implications of a {open_quotes}cross-rolled{close_quotes} yield surface approximation on deep drawing

    SciTech Connect (OSTI)

    Logan, R.W.

    1996-03-01

    During deep-drawing, two issues manifest themselves that are due to normal and planar anisotropy in the sheet. These are a dependence of the Limiting Draw Ratio (LDR) on the average thinning ratio (R-value), and a dependence of ear formation and thinning around the circumference on the variation of R-value in the plane of the sheet. The quadratic (1948 Hill) yield surface has been applied to these issues and it has been demonstrated that there are numerous higher exponent yield criteria that may more closely duplicate experimental trends. These predict varying degrees of R-value dependencies of uniaxial yields and strength ratios in multiaxial loading paths. The result of this is that there are sometimes subtle and sometimes substantial differences in the predictions of the various yield surfaces on deep drawing regarding LDR and earing. Additional differences arise due to the way the shear term (45-degree yield) and the 0-degree vs. 90-degree strengths are treated in each criterion. These dependencies (in-plane strengths generated by the yield surfaces) are shown to affect the results of both LDR and earing during cupping. In particular, the 1979 Hosford and 1989 Barlat (Tricomponent) criteria, although identical for the normal anisotropy (planar isotropy) case, are strikingly different for cases where there are differences at 45 degrees and 90 degrees from the rolling direction.

  18. Global crop yield losses from recent warming

    SciTech Connect (OSTI)

    Lobell, D; Field, C

    2006-06-02

    Global yields of the world-s six most widely grown crops--wheat, rice, maize, soybeans, barley, sorghum--have increased since 1961. Year-to-year variations in growing season minimum temperature, maximum temperature, and precipitation explain 30% or more of the variations in yield. Since 1991, climate trends have significantly decreased yield trends in all crops but rice, leading to foregone production since 1981 of about 12 million tons per year of wheat or maize, representing an annual economic loss of $1.2 to $1.7 billion. At the global scale, negative impacts of climate trends on crop yields are already apparent. Annual global temperatures have increased by {approx}0.4 C since 1980, with even larger changes observed in several regions (1). While many studies have considered the impacts of future climate changes on food production (2-5), the effects of these past changes on agriculture remain unclear. It is likely that warming has improved yields in some areas, reduced them in others, and had negligible impacts in still others; the relative balance of these effects at the global scale is unknown. An understanding of this balance would help to anticipate impacts of future climate changes, as well as to more accurately assess recent (and thereby project future) technologically driven yield progress. Separating the contribution of climate from concurrent changes in other factors--such as crop cultivars, management practices, soil quality, and atmospheric carbon dioxide (CO{sub 2}) levels--requires models that describe the response of yields to climate. Studies of future global impacts of climate change have typically relied on a bottom-up approach, whereby field scale, process-based models are applied to hundreds of representative sites and then averaged (e.g., ref 2). Such approaches require input data on soil and management conditions, which are often difficult to obtain. Limitations on data quality or quantity can thus limit the utility of this approach

  19. BETO Seeks Stakeholder Input on Achieving High Yields from Algal Feedstocks

    Broader source: Energy.gov [DOE]

    The U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy’s Bioenergy Technologies Office (BETO) has released a Request for Information (RFI) titled “High Yields through Productivity and Integration Research.” BETO is seeking input from industry, academia, and other stakeholders regarding supply systems and services for the cultivation, logistics, and preprocessing of algal feedstocks.

  20. Progress Report on U.S.-China Clean Energy Cooperation

    Broader source: Energy.gov [DOE]

    The Department of Energy report demonstrates the substantial progress made to date on a number of clean energy initiatives between China and the United States

  1. Neutron yield enhancement in laser-induced deuterium-deuterium fusion using a novel shaped target

    SciTech Connect (OSTI)

    Zhao, J. R.; Chen, L. M. Li, Y. T.; Li, F.; Zhu, B. J.; Li, Yan. F.; Liao, G. Q.; Huang, K.; Ma, Y.; Li, Yi. F.; Zhang, X. P.; Fu, C. B.; Yuan, D. W.; Zhang, K.; Han, B.; Zhao, G.; Rhee, Y. J.; Liu, C.; Xiong, J.; Huang, X. G.; and others

    2015-06-15

    Neutron yields have direct correlation with the energy of incident deuterons in experiments of laser deuterated target interaction [Roth et al., Phys. Rev. Lett. 110, 044802 (2013) and Higginson et al., Phys. Plasmas 18, 100703 (2011)], while deuterated plasma density is also an important parameter. Experiments at the Shenguang II laser facility have produced neutrons with energy of 2.45 MeV using d (d, n) He reaction. Deuterated foil target and K-shaped target were employed to study the influence of plasma density on neutron yields. Neutron yield generated by K-shaped target (nearly 10{sup 6}) was two times higher than by foil target because the K-shaped target results in higher density plasma. Interferometry and multi hydro-dynamics simulation confirmed the importance of plasma density for enhancement of neutron yields.

  2. Combining Low-Temperature Combustion with Lean-NOx Trap Yields Progress

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

    Toward Targets of Efficient NOx Control for Diesels | Department of Energy Low-Temperature Combustion with Lean-NOx Trap Yields Progress Toward Targets of Efficient NOx Control for Diesels Combining Low-Temperature Combustion with Lean-NOx Trap Yields Progress Toward Targets of Efficient NOx Control for Diesels 2005 Diesel Engine Emissions Reduction (DEER) Conference Presentations and Posters 2005_deer_huff.pdf (547.35 KB) More Documents & Publications Intra-catalyst Reductant Chemistry

  3. High-Yielding Method for Converting Biomass to Fermentable Sugars for

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

    Biofuel Production - Energy Innovation Portal High-Yielding Method for Converting Biomass to Fermentable Sugars for Biofuel Production Inventors: Ronald Raines, Joseph Binder Great Lakes Bioenergy Research Center Contact GLBRC About This Technology Technology Marketing Summary Lignocellulosic biomass is a very desirable feedstock for biofuel production. If the fermentation process for lignocellulose could be optimized, conversion of this biomass could yield 25 to 50 billion gallons of

  4. MULTI-KEV X-RAY YIELDS FROM HIGH-Z GAS TARGETS FIELDED AT OMEGA

    SciTech Connect (OSTI)

    Kane, J O; Fournier, K B; May, M J; Colvin, J D; Thomas, C A; Marrs, R E; Compton, S M; Moody, J D; Bond, E J; Davis, J F

    2010-11-04

    The authors report on modeling of x-ray yield from gas-filled targets shot at the OMEGA laser facility. The OMEGA targets were 1.8 mm long, 1.95 mm in diameter Be cans filled with either a 50:50 Ar:Xe mixture, pure Ar, pure Kr or pure Xe at {approx} 1 atm. The OMEGA experiments heated the gas with 20 kJ of 3{omega} ({approx} 350 nm) laser energy delivered in a 1 ns square pulse. the emitted x-ray flux was monitored with the x-ray diode based DANTE instruments in the sub-keV range. Two-dimensional x-ray images (for energies 3-5 keV) of the targets were recorded with gated x-ray detectors. The x-ray spectra were recorded with the HENWAY crystal spectrometer at OMEGA. Predictions are 2D r-z cylindrical with DCA NLTE atomic physics. Models generally: (1) underpredict the Xe L-shell yields; (2) overpredict the Ar K-shell yields; (3) correctly predict the Xe thermal yields; and (4) greatly underpredict the Ar thermal yields. However, there are spreads within the data, e.g. the DMX Ar K-shell yields are correctly predicted. The predicted thermal yields show strong angular dependence.

  5. Laser Seeding Yields High-Power Coherent Terahertz Radiation

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

    Laser Seeding Yields High-Power Coherent Terahertz Radiation Laser Seeding Yields High-Power Coherent Terahertz Radiation Print Wednesday, 25 April 2007 00:00 Researchers at ...

  6. Structures for Three Membrane Transport Proteins Yield Functional...

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

    Structures for Three Membrane Transport Proteins Yield Functional Insights Structures for Three Membrane Transport Proteins Yield Functional Insights Print Wednesday, 27 January ...

  7. Limits of optimal control yields achievable with quantum controllers...

    Office of Scientific and Technical Information (OSTI)

    Limits of optimal control yields achievable with quantum controllers Prev Next Title: Limits of optimal control yields achievable with quantum controllers Authors: Wu, ...

  8. Integrated Energy Systems Multi-Media Webcast: Three CHP Sites...

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

    Multi-Media Webcast: Three CHP Sites Yield Important Lessons Learned, September 2005 Integrated Energy Systems Multi-Media Webcast: Three CHP Sites Yield Important Lessons Learned, ...

  9. Energy Department Announces $10 Million to Advance Innovative...

    Energy Savers [EERE]

    Announces 10 Million to Advance Innovative, Energy-Saving Lighting Technologies Energy ... 10 years has helped accelerate SSL technology deployment, yielding an energy ...

  10. Audit Report: IG-0419 | Department of Energy

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

    Measuring research program performance is particularly important for the Department of Energy because of its substantial investment (approximately 7 billion in Fiscal Year 1996) ...

  11. Waveform inversion of acoustic waves for explosion yield estimation

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Kim, K.; Rodgers, A. J.

    2016-07-08

    We present a new waveform inversion technique to estimate the energy of near-surface explosions using atmospheric acoustic waves. Conventional methods often employ air blast models based on a homogeneous atmosphere, where the acoustic wave propagation effects (e.g., refraction and diffraction) are not taken into account, and therefore, their accuracy decreases with increasing source-receiver distance. In this study, three-dimensional acoustic simulations are performed with a finite difference method in realistic atmospheres and topography, and the modeled acoustic Green's functions are incorporated into the waveform inversion for the acoustic source time functions. The strength of the acoustic source is related to explosionmore » yield based on a standard air blast model. The technique was applied to local explosions (<10 km) and provided reasonable yield estimates (<~30% error) in the presence of realistic topography and atmospheric structure. In conclusion, the presented method can be extended to explosions recorded at far distance provided proper meteorological specifications.« less

  12. Z, ZX, and X-1: A Realistic Path to High Fusion Yield

    SciTech Connect (OSTI)

    COOK, DONALD L.

    1999-10-07

    Z-pinches now constitute the most energetic and powerful sources of x-rays available by a large margin. The Z accelerator at Sandia National Laboratories has produced 1.8 MJ of x-ray energy, 280 TW of power, and hohlraum temperatures of 200 eV. These advances are being applied to inertial confinement fusion (ICF) experiments on Z. The requirements for high fusion yield are exemplified in the target to be driven by the X-1 accelerator. X-1 will drive two z-pinches, each producing 7 MJ of x-ray energy and about 1000 TW of x-ray power. Together, these radiation sources will heat a hohlraum containing the 4-mm diameter ICF capsule to a temperature exceeding 225 eV for about 10 ns, with the pulse shape required to drive the capsule to high fusion yield, in the range of 200--1000 MJ. Since X-1 consists of two identical accelerators, it is possible to mitigate the technical risk of high yield by constructing one accelerator. This accelerator, ZX, will bridge the gap from Z to X-1 by driving an integrated target experiment with a very efficient energy source, ZX will also provide experimental condition that the full specifications of the X-1 accelerator for high yield are achievable, and that a realistic path to high fission yield exists.

  13. Biomass Feedstocks for Renewable Fuel Production: A review of the impacts of feedstock and pretreatment on the yield and product distribution of fast pyrolysis bio-oils and vapors

    SciTech Connect (OSTI)

    Daniel Carpenter; Stefan Czernik; Whitney Jablonski; Tyler L. Westover

    2014-02-01

    Renewable transportation fuels from biomass have the potential to substantially reduce greenhouse gas emissions and diversify global fuel supplies. Thermal conversion by fast pyrolysis converts up to 75% of the starting plant material (and its energy content) to a bio-oil intermediate suitable for upgrading to motor fuel. Woody biomass, by far the most widely-used and researched material, is generally preferred in thermochemical processes due to its low ash content and high quality bio-oil produced. However, the availability and cost of biomass resources, e.g. forest residues, agricultural residues, or dedicated energy crops, vary greatly by region and will be key determinates in the overall economic feasibility of a pyrolysis-to-fuel process. Formulation or blending of various feedstocks, combined with thermal and/or chemical pretreatment, could facilitate a consistent, high-volume, lower-cost biomass supply to an emerging biofuels industry. However, the impact of biomass type and pretreatment conditions on bio-oil yield and quality, and the potential process implications, are not well understood. This literature review summarizes the current state of knowledge regarding the effect of feedstock and pretreatments on the yield, product distribution, and upgradability of bio-oil.

  14. Research Topics | Department of Energy

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

    ... energy yield while reducing balance of system (BOS) ... accelerated life testing methods for full PV systems ... reaction rate of the desired SO3 SO2 conversion process. ...

  15. Energy 101: Geothermal Energy | Department of Energy

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

    Geothermal Energy Energy 101: Geothermal Energy

  16. Negative hydrogen ion yields at plasma grid surface in a negative hydrogen ion source

    SciTech Connect (OSTI)

    Wada, M.; Kenmotsu, T.; Sasao, M.

    2015-04-08

    Negative hydrogen (H{sup ?}) ion yield from the plasma grid due to incident hydrogen ions and neutrals has been evaluated with the surface collision cascade model, ACAT (Atomic Collision in Amorphous Target) coupled to a negative surface ionization models. Dependence of negative ion fractions upon the velocity component normal to the surface largely affect the calculation results of the final energy and angular distributions of the H{sup ?} ions. The influence is particularly large for H{sup ?} ions desorbed from the surface due to less than several eV hydrogen particle implact. The present calculation predicts that H{sup ?} ion yield can be maximized by setting the incident angle of hydrogen ions and neutrals to be 65 degree. The Cs thickness on the plasma grid should also affect the yields and mean energies of surface produced H{sup ?} ions by back scattering and ion induced desorption processes.

  17. Calculated fission-fragment yield systematics in the region 74

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Möller, Peter; Randrup, Jørgen

    2015-04-01

    Background: In the seminal experiment by Schmidt et al. [Nucl. Phys. A 665, 221 (2000)] in which fission-fragment charge distributions were obtained for 70 nuclides, asymmetric distributions were seen above nucleon number A ≈ 226 and symmetric ones below. Because asymmetric fission had often loosely been explained as a preference for the nucleus to always exploit the extra binding of fragments near ¹³²Sn it was assumed that all systems below A ≈ 226 would fission symmetrically because available isotopes do not have a proton-to-neutron Z/N ratio that allows division into fragments near ¹³²Sn. But the finding by Andreyev et al.more »[Phys. Rev. Lett. 105, 252502 (2010)] did not conform to this expectation because the compound system ¹⁸⁰Hg was shown to fission asymmetrically. It was suggested that this was a new type of asymmetric fission, because no strong shell effects occur for any possible fragment division. Purpose: We calculate a reference database for fission-fragment mass yields for a large region of the nuclear chart comprising 987 nuclides. A particular aim is to establish whether ¹⁸⁰Hg is part of a contiguous region of asymmetric fission, and if so, its extent, or if not, in contrast to the actinides, there are scattered smaller groups of nuclei that fission asymmetrically in this area of the nuclear chart. Methods: We use the by now well benchmarked Brownian shape-motion method and perform random walks on the previously calculated five-dimensional potential-energy surfaces. The calculated shell corrections are damped out with energy according to a prescription developed earlier. Results: We have obtained a theoretical reference database of fission-fragment mass yields for 987 nuclides. These results show an extended region of asymmetric fission with approximate extension 74 ≤ Z ≤ 85 and 100 ≤ N ≤ 120. The calculated yields are highly variable. We show 20 representative plots of these variable features and summarize the main

  18. Analysis of Photovoltaic System Energy Performance Evaluation Method

    SciTech Connect (OSTI)

    Kurtz, S.; Newmiller, J.; Kimber, A.; Flottemesch, R.; Riley, E.; Dierauf, T.; McKee, J.; Krishnani, P.

    2013-11-01

    Documentation of the energy yield of a large photovoltaic (PV) system over a substantial period can be useful to measure a performance guarantee, as an assessment of the health of the system, for verification of a performance model to then be applied to a new system, or for a variety of other purposes. Although the measurement of this performance metric might appear to be straight forward, there are a number of subtleties associated with variations in weather and imperfect data collection that complicate the determination and data analysis. A performance assessment is most valuable when it is completed with a very low uncertainty and when the subtleties are systematically addressed, yet currently no standard exists to guide this process. This report summarizes a draft methodology for an Energy Performance Evaluation Method, the philosophy behind the draft method, and the lessons that were learned by implementing the method.

  19. Yields of photoneutron reactions on {sup 197}Au nuclei in the giant-dipole-resonance region

    SciTech Connect (OSTI)

    Belyshev, S. S.; Ermakov, A. N.; Ishkhanov, B. S.; Kuznetsov, A. A.; Kurilik, A. S.; Stopani, K. A.; Troschiev, S. Yu.

    2011-11-15

    Yields of photonuclear reactions on 197Au nuclei were measured in a beam of bremsstrahlung photons, the endpoint energy of the bremsstrahlung spectrum being 29.1 MeV. These measurements were performed by means of the gamma-activation procedure. The results obtained in this way were compared with the results of earlier experiments and theoretical calculations.

  20. High-energy detector

    DOE Patents [OSTI]

    Bolotnikov, Aleksey E.; Camarda, Giuseppe; Cui, Yonggang; James, Ralph B.

    2011-11-22

    The preferred embodiments are directed to a high-energy detector that is electrically shielded using an anode, a cathode, and a conducting shield to substantially reduce or eliminate electrically unshielded area. The anode and the cathode are disposed at opposite ends of the detector and the conducting shield substantially surrounds at least a portion of the longitudinal surface of the detector. The conducting shield extends longitudinally to the anode end of the detector and substantially surrounds at least a portion of the detector. Signals read from one or more of the anode, cathode, and conducting shield can be used to determine the number of electrons that are liberated as a result of high-energy particles impinge on the detector. A correction technique can be implemented to correct for liberated electron that become trapped to improve the energy resolution of the high-energy detectors disclosed herein.

  1. Boosting investor yields through bond insurance

    SciTech Connect (OSTI)

    Mosbacher, M.L.; Burkhardt, D.A.

    1993-02-01

    The market for utility securities generally tends to be fairly static. Innovative financing techniques are rarely used because of the marketability of utility securities stemming from the companies' generally strong financial credit and the monopoly markets most utilities serve. To many people, utility securities are considered the pillars of the financial world, and innovation is not needed. Further, plain vanilla utility issues are easily understood by investors, as well as by regulators and customers. Over the past several years, however, a new utility bond product has crept into the world of utility securities - insured secondary utility bonds. These insured bonds may possibly be used as an alternative financing technique for newly issued debt. Individual investors often tend to rely on insurance as a tool for reducing credit risk and are willing to take the lower yields as a tradeoff. Insured utility bonds are created by brokerage firms through the acqusition of a portion of an outstanding utility bond issue and subsequent solicitation of the insurance companies for bids. The insurance company then agrees to insure that portion of the issue until maturity for a fee, and the brokerage firm sells those bonds to their customers as a AAA-insured bond. Issuers are encouraged to explore the retail market as a financing alternative. They may find a most cost-effective means of raising capital.

  2. Hybrid Radical Energy Storage Device - Energy Innovation Portal

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

    Energy Storage Energy Storage Advanced Materials Advanced Materials Find More Like This Return to Search Hybrid Radical Energy Storage Device National Renewable Energy Laboratory Contact NREL About This Technology Technology Marketing Summary In order to provide a cost effective, environmentally benign and efficient means for storing electric energy from renewable sources, breakthroughs are needed in rechargeable battery technology that will substantially increase energy and power densities.

  3. Small-Scale Carbon Sequestration Field Test Yields Significant...

    Office of Environmental Management (EM)

    Small-Scale Carbon Sequestration Field Test Yields Significant Lessons Learned Small-Scale Carbon Sequestration Field Test Yields Significant Lessons Learned May 20, 2009 - 1:00pm ...

  4. CO2 Capture and Regeneration at Low Temperatures: Novel Non-Aqueous CO2 Solvents and Capture Process with Substantially Reduced Energy Penalties

    SciTech Connect (OSTI)

    2010-07-01

    IMPACCT Project: RTI is developing a solvent and process that could significantly reduce the temperature associated with regenerating solvent and CO2 captured from the exhaust gas of coal-fired power plants. Traditional CO2 removal processes using water-based solvents require significant amount of steam from power plants in order to regenerate the solvent so it can be reused after each reaction. RTI’s solvents can be better at absorbing CO2 than many water-based solvents, and are regenerated at lower temperatures using less steam. Thus, industrial heat that is normally too cool to re-use can be deployed for regeneration, rather than using high-value steam. This saves the power plant money, which results in increased cost savings for consumers.

  5. Energy and materials flows in the production of olefins and their derivatives

    SciTech Connect (OSTI)

    Gaines, L.L.; Shen, S.Y.

    1980-08-01

    Production of olefins and their derivatives uses almost 3.5% of the oil and gas consumed annually in the United States. It is estimated that their production requires an input energy of 2 Q, which is 50% of the energy used in the production of all petrochemicals. Substantial amounts of this energy could be recovered through recycling. For example, recycling of a single plastic product, polyester soft drink bottles, could have recovered about 0.014 Q in 1979. (About 1.4 Q is used to produce plastic derivatives of olefins). Petrochemical processes use fuels as feedstocks, as well as for process energy, and a portion of this energy is not foregone and can be recovered through combustion of the products. The energy foregone in the production of ethylene is estimated to be 7800 Btu/lb. The energy foregone in plastics production ranges from 12,100 Btu/lb for the new linear low-density polyethylene to 77,200 Btu/lb for nylon 66, which is about 60% of the total energy input for that product. Further investigation of the following areas could yield both material and energy savings in the olefins industry: (1) recycling of petrochemical products to recover energy in addition to that recoverable through combustion, (2) impact of feedstock substitution on utilization of available national resources, and (3) effective use of the heat embodied in process steam. This steam accounts for a major fraction of the industry's energy input.

  6. Natural h{yields}4g in supersymmetric models and R-hadrons at the LHC

    SciTech Connect (OSTI)

    Luty, Markus A.; Phalen, Daniel J.; Pierce, Aaron

    2011-04-01

    We construct a simple and natural supersymmetric model where the dominant Higgs decay is h{yields}aa followed by a{yields}gg. In this case m{sub h}yields}gg. The a is a pseudo-Nambu-Goldstone boson of a new global U(1) symmetry, and can naturally have any mass from a few GeV to m{sub h}/2. All interactions can be perturbative up to the GUT scale, and gauge coupling unification is preserved if the colored mediators come in complete GUT representations. In this case a{yields}{gamma}{gamma} has a {approx}1% branching ratio, so h{yields}gg{gamma}{gamma} may be observable. The colored particles that mediate the a{yields}gg decay must be below the TeV scale, and can therefore be produced at the LHC. If these particles are stable on collider time scales, they will appear as R-hadrons, a signal visible in early LHC running. A smoking-gun signal that the stable colored particles are mediators of h{yields}4j is R-hadron production in association with an a. We show that this signal with a{yields}{gamma}{gamma} is observable at the LHC with as little as 10 fb{sup -1} of integrated luminosity. Observation of R-hadrons plus missing energy would show that the superpartner of the R-hadron is R-parity odd, and therefore not an ordinary quark or gluon.

  7. PRE-SUPERNOVA EVOLUTION OF ROTATING SOLAR METALLICITY STARS IN THE MASS RANGE 13-120 M {sub Sun} AND THEIR EXPLOSIVE YIELDS

    SciTech Connect (OSTI)

    Chieffi, Alessandro; Limongi, Marco E-mail: marco.limongi@oa-roma.inaf.it

    2013-02-10

    We present the first set of a new generation of models of massive stars with a solar composition extending between 13 and 120 M {sub Sun }, computed with and without the effects of rotation. We included two instabilities induced by rotation: the meridional circulation and the shear instability. We implemented two alternative schemes to treat the transport of the angular momentum: the advection-diffusion formalism and the simpler purely diffusive one. The full evolution from the pre-main sequence up to the pre-supernova stage is followed in detail with a very extended nuclear network. The explosive yields are provided for a variety of possible mass cuts and are available at the Web site http://www.iasf-roma.inaf.it/orfeo/public{sub h}tml. We find that both the He and the CO core masses are larger than those of their non-rotating counterparts. Also the C abundance left by the He burning is lower than in the non-rotating case, especially for stars with an initial mass of 13-25 M {sub Sun }, and this affects the final mass-radius relation, basically the final binding energy, at the pre-supernova stage. The elemental yields produced by a generation of stars rotating initially at 300 km s{sup -1} do not change substantially with respect to those produced by a generation of non-rotating massive stars, the main differences being a slight overproduction of the weak s-component and a larger production of F. Since rotation also affects the mass-loss rate, either directly or indirectly, we find substantial differences in the lifetimes as O-type and Wolf-Rayet subtypes between the rotating and non-rotating models. The maximum mass exploding as Type IIP supernova ranges between 15 and 20 M {sub Sun} in both sets of models (this value depends basically on the larger mass-loss rates in the red supergiant phase due to the inclusion of the dust-driven wind). This limiting value is in remarkably good agreement with current estimates.

  8. Using Magnets to Keep Cool: Breakthrough Technology Boosts Energy...

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

    funded by the Energy Department has led to a major breakthrough in refrigeration systems that could yield big energy savings for consumers and greatly reduce carbon pollution. ...

  9. #LabChat Recap: What is Dark Energy

    Office of Energy Efficiency and Renewable Energy (EERE)

    The Dark Energy #LabChat on Oct. 25 yielded a lively discussion with three physicists about inflation, super symmetry, black holes and, of course, dark energy.

  10. Testing actinide fission yield treatment in CINDER90 for use in MCNP6 burnup calculations

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Fensin, Michael Lorne; Umbel, Marissa

    2015-09-18

    Most of the development of the MCNPX/6 burnup capability focused on features that were applied to the Boltzman transport or used to prepare coefficients for use in CINDER90, with little change to CINDER90 or the CINDER90 data. Though a scheme exists for best solving the coupled Boltzman and Bateman equations, the most significant approximation is that the employed nuclear data are correct and complete. Thus, the CINDER90 library file contains 60 different actinide fission yields encompassing 36 fissionable actinides (thermal, fast, high energy and spontaneous fission). Fission reaction data exists for more than 60 actinides and as a result, fissionmore » yield data must be approximated for actinides that do not possess fission yield information. Several types of approximations are used for estimating fission yields for actinides which do not possess explicit fission yield data. The objective of this study is to test whether or not certain approximations of fission yield selection have any impact on predictability of major actinides and fission products. Further we assess which other fission products, available in MCNP6 Tier 3, result in the largest difference in production. Because the CINDER90 library file is in ASCII format and therefore easily amendable, we assess reasons for choosing, as well as compare actinide and major fission product prediction for the H. B. Robinson benchmark for, three separate fission yield selection methods: (1) the current CINDER90 library file method (Base); (2) the element method (Element); and (3) the isobar method (Isobar). Results show that the three methods tested result in similar prediction of major actinides, Tc-99 and Cs-137; however, certain fission products resulted in significantly different production depending on the method of choice.« less

  11. Testing actinide fission yield treatment in CINDER90 for use in MCNP6 burnup calculations

    SciTech Connect (OSTI)

    Fensin, Michael Lorne; Umbel, Marissa

    2015-09-18

    Most of the development of the MCNPX/6 burnup capability focused on features that were applied to the Boltzman transport or used to prepare coefficients for use in CINDER90, with little change to CINDER90 or the CINDER90 data. Though a scheme exists for best solving the coupled Boltzman and Bateman equations, the most significant approximation is that the employed nuclear data are correct and complete. Thus, the CINDER90 library file contains 60 different actinide fission yields encompassing 36 fissionable actinides (thermal, fast, high energy and spontaneous fission). Fission reaction data exists for more than 60 actinides and as a result, fission yield data must be approximated for actinides that do not possess fission yield information. Several types of approximations are used for estimating fission yields for actinides which do not possess explicit fission yield data. The objective of this study is to test whether or not certain approximations of fission yield selection have any impact on predictability of major actinides and fission products. Further we assess which other fission products, available in MCNP6 Tier 3, result in the largest difference in production. Because the CINDER90 library file is in ASCII format and therefore easily amendable, we assess reasons for choosing, as well as compare actinide and major fission product prediction for the H. B. Robinson benchmark for, three separate fission yield selection methods: (1) the current CINDER90 library file method (Base); (2) the element method (Element); and (3) the isobar method (Isobar). Results show that the three methods tested result in similar prediction of major actinides, Tc-99 and Cs-137; however, certain fission products resulted in significantly different production depending on the method of choice.

  12. Clean Firetube Boiler Waterside Heat Transfer Surfaces, Energy...

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

    7 Clean Firetube Boiler Waterside Heat Transfer Surfaces The prevention of scale formation in fretube boilers can result in substantial energy savings. Scale deposits occur when ...

  13. Understanding Energy Impacts of Oversized Air Conditioners (Fact...

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

    research reveals the effects of parasitic power losses on the energy consumption of oversized residential air conditioners. Retrofits of existing homes can be substantial invest- ...

  14. South Carolina Recovery Act State Memo | Department of Energy

    Office of Environmental Management (EM)

    South Carolina has substantial nuclear and hydroelectric resources. The American Recovery & Reinvestment Act (ARRA) is making a meaningful down payment on the nation's energy and ...

  15. Assessment of fission product yields data needs in nuclear reactor applications

    SciTech Connect (OSTI)

    Kern, K.; Becker, M.; Broeders, C.

    2012-07-01

    Studies on the build-up of fission products in fast reactors have been performed, with particular emphasis on the effects related to the physics of the nuclear fission process. Fission product yields, which are required for burn-up calculations, depend on the proton and neutron number of the target nucleus as well as on the incident neutron energy. Evaluated nuclear data on fission product yields are available for all relevant target nuclides in reactor applications. However, the description of their energy dependence in evaluated data is still rather rudimentary, which is due to the lack of experimental fast fission data and reliable physical models. Additionally, physics studies of evaluated JEFF-3.1.1 fission yields data have shown potential improvements, especially for various fast fission data sets of this evaluation. In recent years, important progress in the understanding of the fission process has been made, and advanced model codes are currently being developed. This paper deals with the semi-empirical approach to the description of the fission process, which is used in the GEF code being developed by K.-H. Schmidt and B. Jurado on behalf of the OECD Nuclear Energy Agency, and with results from the corresponding author's diploma thesis. An extended version of the GEF code, supporting the calculation of spectrum weighted fission product yields, has been developed. It has been applied to the calculation of fission product yields in the fission rate spectra of a MOX fuelled sodium-cooled fast reactor. Important results are compared to JEFF-3.1.1 data and discussed in this paper. (authors)

  16. Secondary electron yield of emissive materials for large-area...

    Office of Scientific and Technical Information (OSTI)

    Conference: Secondary electron yield of emissive materials for large-area micro-channel plate detectors: surface composition and film thickness dependencies Citation Details ...

  17. 2D Monolayers Could Yield Thinnest Solar Cells Ever

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

    yield thinner, more lightweight solar panels that ... was how well do these materials absorb light," he said. "And that is ... The researchers also used the National Science ...

  18. Feedstocks with Reduced Acetylation for Higher Product Yields...

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

    Institute (JBEI) has developed a method of using plants that have reduced levels of acetylation of their cellulose. The plants are positioned to provide higher yields of sugar ...

  19. A Metabolic Pathway in Cyanobacteria Could Yield Better Biofuels...

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

    A Metabolic Pathway in Cyanobacteria Could Yield Better Biofuels and Bioproducts from ... chemicals that can be used to produce a variety of bio-based chemicals and biofuels. ...

  20. Metabolic engineering for the high-yield production of isoprenoid...

    Office of Scientific and Technical Information (OSTI)

    Journal Article: Metabolic engineering for the high-yield production of isoprenoid-based C5 alcohols in E. coli Citation ... Type: Accepted Manuscript Journal Name: Scientific Reports ...

  1. Direct laboratory tensile testing of select yielding rock bolt systems

    SciTech Connect (OSTI)

    VandeKraats, J.D.; Watson, S.O.

    1996-12-01

    Yielding rock bolt support systems have been developed to accommodate ground movement in shifting ground such as in coal operations; in creeping ground such as salt, trona, and potash; and in swelling ground associated with some clays. These systems, designed to remain intact despite ground movement, should enhance mine safety and help contain costs in areas where revolting of rigid non-yielding systems is typically required. Four such systems were tested in straight tensile pulls in the laboratory. They include the Slip Nut System from Dywidag Systems International USA, Inc., Ischebeck`s bolt mounted Titan Load Indicator, Rocky Mountain Bolt Company`s Yielding Cable Bolt, and a rock bolt installed variation of the yielding steel post developed by RE/SPEC Inc. The first two systems are currently marketed products and the latter two are prototype systems. Each system responds to load and displacement by yielding in a unique manner. All are designed to yield at predetermined loads. A description of each system and its yield function is provided. Each system was tested over its prescribed yield range in a test machine. At least five tests were performed on each system. Each system yielded and continued to provide support according to its design. Each shows promise for ground control use in shifting or creeping rock. This work helps to illustrate the comparative differences in performance between these specialized systems and the applications where they may be most useful.

  2. Direct laboratory tensile testing of select yielding rock bolt systems

    SciTech Connect (OSTI)

    VandeKraats, J.D.; Watson, S.O.

    1996-08-01

    Yielding rock bolt support systems have been developed to accommodate ground movement in shifting ground such as in coal operations; in creeping ground such as salt, trona, and potash; and in swelling ground associated with some clays. These systems, designed to remain intact despite ground movement, should enhance mine safety and help contain costs in areas where rebolting of rigid non-yielding systems is typically required. Four such systems were tested in straight tensile pulls in the laboratory. They include the Slip Nut System from Dywidag Systems International USA, Inc., Ischebeck`s bolt mounted Titan Load Indicator, Rocky Mountain Bolt Company`s Yielding Cable Bolt, and a rock bolt installed variation of the yielding steel post developed by RE/SPEC Inc. The first two systems are currently marketed products and the latter two are prototype systems. Each system responds to load and displacement by yielding in an unique manner. All are designed to yield at predetermined loads. A description of each system and its yield function is provided. Each system was tested over its prescribed yield range in a test machine. At least five tests were performed on each system. Each system yielded and continued to provide support according to its design. Each shows promise for ground control use in shifting or creeping rock. This work helps to illustrate the comparative differences in performance between these specialized systems and the applications where they may be most useful.

  3. Laser Seeding Yields High-Power Coherent Terahertz Radiation

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

    Laser Seeding Yields High-Power Coherent Terahertz Radiation Print Researchers at Berkeley ... by femtoslicing (see "Tailored Terahertz Pulses from a Laser-Modulated Electron Beam"). ...

  4. Mapping Intra-Field Yield Variation Using High Resolution Satellite...

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

    future landscape patterns, hydrologic modeling, landscape design, predictive crop yield, red-edge, sub-field scale, SWAT, water quality Abstract Biofuels are important alternatives...

  5. Limits of optimal control yields achievable with quantum controllers...

    Office of Scientific and Technical Information (OSTI)

    SciTech Connect Search Results Journal Article: Limits of optimal control yields achievable with quantum controllers Citation Details In-Document Search Title: Limits of optimal ...

  6. Researchers Demonstrate Microstructure and Charge Yield in Semiconducting Polymers (Fact Sheet), NREL Highlights, Science

    SciTech Connect (OSTI)

    Not Available

    2012-02-01

    Microstructure determines the yield of free charge in neat semiconducting polymers. Understanding the fundamental photophysics of poly(3-hyxylthiophene) films, and that of conjugated polymers in general, is essential if we are to realize their full potential as low-cost active layers for coal-competitive solar power generation. Yet, the value of one of the most basic photophysical parameters of these materials - the yield of free charges upon photoexcitation of neat films - has remained controversial because of a wide variation between previous measurements. Researchers at the National Renewable Energy Laboratory (NREL) have resolved this controversy by showing that the yield of free charges depends sensitively on the solid-state microstructure of the film. The microstructure was varied systematically through control of the polymers molecular weight and processing conditions, while the charge carrier yield was measured using time-resolved microwave conductivity - a unique technique to which only a few groups in the world have access. The researchers found that the yield of long-lived free charges depends on the co-existence of amorphous and crystalline domains in the polymer, and this behavior was attributed to charge separation at the interface between these two domains of order.

  7. Nuclear and in-source laser spectroscopy with the ISAC yield station

    SciTech Connect (OSTI)

    Kunz, Peter Bricault, Pierre; Dombsky, Marik; Lassen, Jens; Teigelhöfer, Andrea; Heggen, Henning; Andreoiu, Corina; Wong, Fiona

    2014-05-15

    A new decay station has been built for the ISAC facility at TRIUMF for the rapid and reliable characterization of radioactive ion beam (RIB) compositions and intensities with the capability of simultaneously collecting α, β, and γ decay data from RIB with intensities between a few and ≈10{sup 11} ions per second. It features user-friendly control, data acquisition, and analysis software. The analysis of individual decay time structures allows the unambiguous assignment of α and γ lines even with substantial isobaric contamination present. The capability for accurate half-life measurements is demonstrated with the example of {sup 46}K. The coupling of the yield station to the laser ion source, TRILIS, allows the correlation of radiometric data with automated laser frequency scans. First results of in-source laser spectroscopy measurements on astatine are discussed.

  8. Decays Z{yields}gg{gamma} and Z{sup '}{yields}gg{gamma} in the minimal 331 model

    SciTech Connect (OSTI)

    Flores-Tlalpa, A.; Montano, J.; Ramirez-Zavaleta, F.; Toscano, J. J.

    2009-10-01

    The one-loop induced Z{yields}gg{gamma} and Z{sup '}{yields}gg{gamma} decays are studied within the context of the minimal 331 model, which predicts the existence of new gauge bosons and three exotic quarks. It is found that the Z{yields}gg{gamma} decay is insensitive to the presence of the exotic quarks, as it is essentially governed by the first two families of known quarks. As to the Z{sup '}{yields}gg{gamma} decay, it is found that the exotic quark contribution dominates and that for a heavy Z{sup '} boson it leads to a {gamma}(Z{sup '}{yields}gg{gamma}) that is more than 1 order of magnitude larger than that associated with {gamma}(Z{sup '}{yields}ggg). This result may be used to distinguish a new neutral Z{sup '} boson from those models that do not introduce exotic quarks.

  9. Sandia Energy - Energy Surety

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

    Energy, Energy Assurance, Energy Surety, Grid Integration, Infrastructure Security, Microgrid, News, News & Events, Renewable Energy, Systems Analysis, Systems Engineering,...

  10. Sandia Energy - Energy Assurance

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

    Energy, Energy Assurance, Energy Surety, Grid Integration, Infrastructure Security, Microgrid, News, News & Events, Renewable Energy, Systems Analysis, Systems Engineering,...

  11. Process for improving soluble coal yield in a coal deashing process

    DOE Patents [OSTI]

    Rhodes, Donald E.

    1980-01-01

    Coal liquefaction products are contacted with a deashing solvent and introduced into a first separation zone. The first separation zone is maintained at an elevated temperature and pressure, determined to maximize the recovery of soluble coal products, to cause said coal liquefaction products to separate into a first light phase and a first heavy phase. Under these conditions the heavy phase while still fluid-like in character is substantially non-flowable. Flowability is returned to the fluid-like heavy phase by the introduction of an additional quantity of deashing solvent into the first separation zone at a location below the interface between the first light and heavy phases or into the heavy phase withdrawal conduit during withdrawal of the first heavy phase and prior to any substantial pressure reduction. The first heavy phase then is withdrawn from the first separation zone for additional downstream processing without plugging either the withdrawal conduit or the downstream apparatus. The first light phase comprising the soluble coal products is withdrawn and recovered in an increased yield to provide a more economical coal deashing process.

  12. Measurement of Scintillation and Ionization Yield and Scintillation Pulse Shape from Nuclear Recoils in Liquid Argon

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Cao, H.

    2015-05-26

    We have measured the scintillation and ionization yield of recoiling nuclei in liquid argon as a function of applied electric field by exposing a dual-phase liquid argon time projection chamber (LAr-TPC) to a low energy pulsed narrow band neutron beam produced at the Notre Dame Institute for Structure and Nuclear Astrophysics. Liquid scintillation counters were arranged to detect and identify neutrons scattered in the TPC and to select the energy of the recoiling nuclei. We also report measurements of the scintillation yields for nuclear recoils with energies from 10.3 to 57.3 keV and for median applied electric fields from 0more » to 970 V/cm. For the ionization yields, we report measurements from 16.9 to 57.3 keV and for electric fields from 96.4 to 486 V/cm. Furthermore, we report the observation of an anticorrelation between scintillation and ionization from nuclear recoils, which is similar to the anticorrelation between scintillation and ionization from electron recoils. Assuming that the energy loss partitions into excitons and ion pairs from 83mKr internal conversion electrons is comparable to that from 207Bi conversion electrons, we obtained the numbers of excitons (Nex) and ion pairs (Ni) and their ratio (Nex/Ni) produced by nuclear recoils from 16.9 to 57.3 keV. Motivated by arguments suggesting direction sensitivity in LAr-TPC signals due to columnar recombination, a comparison of the light and charge yield of recoils parallel and perpendicular to the applied electric field is presented for the first time.« less

  13. Measurement of Scintillation and Ionization Yield and Scintillation Pulse Shape from Nuclear Recoils in Liquid Argon

    SciTech Connect (OSTI)

    Cao, H.

    2015-05-26

    We have measured the scintillation and ionization yield of recoiling nuclei in liquid argon as a function of applied electric field by exposing a dual-phase liquid argon time projection chamber (LAr-TPC) to a low energy pulsed narrow band neutron beam produced at the Notre Dame Institute for Structure and Nuclear Astrophysics. Liquid scintillation counters were arranged to detect and identify neutrons scattered in the TPC and to select the energy of the recoiling nuclei. We also report measurements of the scintillation yields for nuclear recoils with energies from 10.3 to 57.3 keV and for median applied electric fields from 0 to 970 V/cm. For the ionization yields, we report measurements from 16.9 to 57.3 keV and for electric fields from 96.4 to 486 V/cm. Furthermore, we report the observation of an anticorrelation between scintillation and ionization from nuclear recoils, which is similar to the anticorrelation between scintillation and ionization from electron recoils. Assuming that the energy loss partitions into excitons and ion pairs from 83mKr internal conversion electrons is comparable to that from 207Bi conversion electrons, we obtained the numbers of excitons (Nex) and ion pairs (Ni) and their ratio (Nex/Ni) produced by nuclear recoils from 16.9 to 57.3 keV. Motivated by arguments suggesting direction sensitivity in LAr-TPC signals due to columnar recombination, a comparison of the light and charge yield of recoils parallel and perpendicular to the applied electric field is presented for the first time.

  14. Argonne discovery yields self-healing diamond-like carbon | Argonne

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

    Leadership Computing Facility Argonne discovery yields self-healing diamond-like carbon Author: Greg Cunningham and Katie Jones August 5, 2016 Facebook Twitter LinkedIn Google E-mail Printer-friendly version Large-scale reactive molecular dynamics simulations carried out on the Mira supercomputer at the Argonne Leadership Computing Facility, along with experiments conducted by researchers in Argonne's Energy Systems Division, enabled the design of a "self-healing," anti-wear

  15. Western Energy Corridor -- Energy Resource Report

    SciTech Connect (OSTI)

    Leslie Roberts; Michael Hagood

    2011-06-01

    The world is facing significant growth in energy demand over the next several decades. Strategic in meeting this demand are the world-class energy resources concentrated along the Rocky Mountains and northern plains in Canada and the U.S., informally referred to as the Western Energy Corridor (WEC). The fossil energy resources in this region are rivaled only in a very few places in the world, and the proven uranium reserves are among the world's largest. Also concentrated in this region are renewable resources contributing to wind power, hydro power, bioenergy, geothermal energy, and solar energy. Substantial existing and planned energy infrastructure, including refineries, pipelines, electrical transmission lines, and rail lines provide access to these resources.

  16. NATIONAL ENERGY TECHNOLOGY LABORATORY Technology Transfer

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

    The unique technology allows operators to optimize the processing to improve material yield, decrease energy use, and improve safety systems. Specialty metals, such as titanium or ...

  17. EcoSystem Corporation | Open Energy Information

    Open Energy Info (EERE)

    developing a technology to increase yields and efficiency, while also decreasing energy consumption and carbon intensity at conventional corn ethanol plants. Coordinates:...

  18. Changes in diurnal temperature range and national cereal yields

    SciTech Connect (OSTI)

    Lobell, D

    2007-04-26

    Models of yield responses to temperature change have often considered only changes in average temperature (Tavg), with the implicit assumption that changes in the diurnal temperature range (DTR) can safely be ignored. The goal of this study was to evaluate this assumption using a combination of historical datasets and climate model projections. Data on national crop yields for 1961-2002 in the 10 leading producers of wheat, rice, and maize were combined with datasets on climate and crop locations to evaluate the empirical relationships between Tavg, DTR, and crop yields. In several rice and maize growing regions, including the two major nations for each crop, there was a clear negative response of yields to increased DTR. This finding reflects a nonlinear response of yields to temperature, which likely results from greater water and heat stress during hot days. In many other cases, the effects of DTR were not statistically significant, in part because correlations of DTR with other climate variables and the relatively short length of the time series resulted in wide confidence intervals for the estimates. To evaluate whether future changes in DTR are relevant to crop impact assessments, yield responses to projected changes in Tavg and DTR by 2046-2065 from 11 climate models were estimated. The mean climate model projections indicated an increase in DTR in most seasons and locations where wheat is grown, mixed projections for maize, and a general decrease in DTR for rice. These mean projections were associated with wide ranges that included zero in nearly all cases. The estimated impacts of DTR changes on yields were generally small (<5% change in yields) relative to the consistently negative impact of projected warming of Tavg. However, DTR changes did significantly affect yield responses in several cases, such as in reducing US maize yields and increasing India rice yields. Because DTR projections tend to be positively correlated with Tavg, estimates of yields

  19. Explicit CP violation in the MSSM through gg{yields}H{sub 1{yields}{gamma}{gamma}}

    SciTech Connect (OSTI)

    Hesselbach, S.; Moretti, S.; Munir, S.; Poulose, P.

    2010-10-01

    We prove the strong sensitivity of the gg{yields}H{sub 1{yields}{gamma}{gamma}} cross section at the Large Hadron Collider on the explicitly CP-violating phases of the minimal supersymmetric standard model, where H{sub 1} is the lightest supersymmetric Higgs boson.

  20. Absolute x-ray yields from laser-irradiated germanium-doped low-density aerogels

    SciTech Connect (OSTI)

    Fournier, K. B.; Satcher, J. H.; May, M. J.; Poco, J. F.; Sorce, C. M.; Colvin, J. D.; Hansen, S. B.; MacLaren, S. A.; Moon, S. J.; Davis, J. F. [Lawrence Livermore National Laboratory, Livermore, California 94551 (United States); Girard, F.; Villette, B.; Primout, M.; Babonneau, D. [Commissariat a l'Energie Atomique-Direction des Application Militaires (CEA/DAM), Ile-de-France, F91297 Arpajon (France); Coverdale, C. A.; Beutler, D. E. [Sandia National Laboratory, Albuquerque, New Mexico 87185 (United States)

    2009-05-15

    The x-ray yields from laser-irradiated germanium-doped ultra-low-density aerogel plasmas have been measured in the energy range from sub-keV to {approx_equal}15 keV at the OMEGA laser facility at the Laboratory for Laser Energetics, University of Rochester. The targets' x-ray yields have been studied for variation in target size, aerogel density, laser pulse length, and laser intensity. For targets that result in plasmas with electron densities in the range of {approx_equal}10% of the critical density for 3{omega} light, one can expect 10-11 J/sr of x rays with energies above 9 keV, and 600-800 J/sr for energies below 3.5 keV. In addition to the x-ray spectral yields, the x-ray temporal waveforms have been measured and it is observed that the emitted x rays generally follow the delivered laser power, with late-time enhancements of emitted x-ray power correlated with hydrodynamic compression of the hot plasma. Further, the laser energy reflected from the target by plasma instabilities is found to be 2%-7% of the incident energy for individual beam intensities {approx_equal}10{sup 14}-10{sup 15} W/cm{sup 2}. The propagation of the laser heating in the target volume has been characterized with two-dimensional imaging. Source-region heating is seen to be correlated with the temporal profile of the emitted x-ray power.

  1. This may come as a surprise, but bigger yields

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

    may come as a surprise, but bigger yields are not always better. Nuclear weapons were generally designed not to be as powerful as possible-but to be as precise as possible. For example, the Department of Defense (DoD) typically tasked Los Alamos to design and build nuclear weapons that produced the specific yield required to destroy one or several types of specific targets. Too little yield and the weapon would fail to destroy the target; too much and the blast would cause unanticipated,

  2. National Energy Storage Strategy

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

    National Grid Energy Storage Strategy Offered by the Energy Storage Subcommittee of the Electricity Advisory Committee Executive Summary Since 2008, there has been substantial progress in the development of electric storage technologies and greater clarity around their role in renewable resource integration, ancillary service markets, time arbitrage, capital deferral as well as other applications and services. These developments, coupled with the increased deployment of storage technologies

  3. Development of Yield and Tensile Strength Design Curves for Alloy 617

    SciTech Connect (OSTI)

    Nancy Lybeck; T. -L. Sham

    2013-10-01

    The U.S. Department of Energy Very High Temperature Reactor Program is acquiring data in preparation for developing an Alloy 617 Code Case for inclusion in the nuclear section of the American Society of Mechanical Engineers (ASME) Boiler and Pressure Vessel (B&PV) Code. A draft code case was previously developed, but effort was suspended before acceptance by ASME. As part of the draft code case effort, a database was compiled of yield and tensile strength data from tests performed in air. Yield strength and tensile strength at temperature are used to set time independent allowable stress for construction materials in B&PV Code, Section III, Subsection NH. The yield and tensile strength data used for the draft code case has been augmented with additional data generated by Idaho National Laboratory and Oak Ridge National Laboratory in the U.S. and CEA in France. The standard ASME Section II procedure for generating yield and tensile strength at temperature is presented, along with alternate methods that accommodate the change in temperature trends seen at high temperatures, resulting in a more consistent design margin over the temperature range of interest.

  4. Absolute calibration method for laser megajoule neutron yield measurement by activation diagnostics

    SciTech Connect (OSTI)

    Landoas, Olivier; Rosse, Bertrand; Briat, Michelle; Marmouget, Jean Gabriel; Varignon, Cyril; Ledoux, Xavier; Caillaud, Tony; Thfoin, Isabelle; Bourgade, Jean-Luc; Glebov, Vladimir Yu; Sangster, Thomas C.; Duffy, Tim; Disdier, Laurent

    2011-07-15

    The laser megajoule (LMJ) and the National Ignition Facility (NIF) plan to demonstrate thermonuclear ignition using inertial confinement fusion (ICF). The neutron yield is one of the most important parameters to characterize ICF experiment performance. For decades, the activation diagnostic was chosen as a reference at ICF facilities and is now planned to be the first nuclear diagnostic on LMJ, measuring both 2.45 MeV and 14.1 MeV neutron yields. Challenges for the activation diagnostic development are absolute calibration, accuracy, range requirement, and harsh environment. At this time, copper and zirconium material are identified for 14.1 MeV neutron yield measurement and indium material for 2.45 MeV neutrons. A series of calibrations were performed at Commissariat a l'Energie Atomique (CEA) on a Van de Graff facility to determine activation diagnostics efficiencies and to compare them with results from calculations. The CEA copper activation diagnostic was tested on the OMEGA facility during DT implosion. Experiments showed that CEA and Laboratory for Laser Energetics (LLE) diagnostics agree to better than 1% on the neutron yield measurement, with an independent calibration for each system. Also, experimental sensitivities are in good agreement with simulations and allow us to scale activation diagnostics for the LMJ measurement range.

  5. Reaction {pi}N {yields} {pi}{pi}N near threshold

    SciTech Connect (OSTI)

    Frlez, E.

    1993-11-01

    The LAMPF E1179 experiment used the {pi}{sup 0} spectrometer and an array of charged particle range counters to detect and record {pi}{sup +}{pi}{sup 0}, {pi}{sup 0}p, and {pi}{sup +}{pi}{sup 0}p coincidences following the reaction {pi}{sup +}p {yields} {pi}{sup 0}{pi}{sup +}p near threshold. The total cross sections for single pion production were measured at the incident pion kinetic energies 190, 200, 220, 240, and 260 MeV. Absolute normalizations were fixed by measuring {pi}{sup +}p elastic scattering at 260 MeV. A detailed analysis of the {pi}{sup 0} detection efficiency was performed using cosmic ray calibrations and pion single charge exchange measurements with a 30 MeV {pi}{sup {minus}} beam. All published data on {pi}N {yields} {pi}{pi}N, including our results, are simultaneously fitted to yield a common chiral symmetry breaking parameter {xi} ={minus}0.25{plus_minus}0.10. The threshold matrix element {vert_bar}{alpha}{sub 0}({pi}{sup 0}{pi}{sup +}p){vert_bar} determined by linear extrapolation yields the value of the s-wave isospin-2 {pi}{pi} scattering length {alpha}{sub 0}{sup 2}({pi}{pi}) = {minus}0.041{plus_minus}0.003 m{sub {pi}}{sup {minus}1}, within the framework of soft-pion theory.

  6. Fragment Yields Calculated in a Time-Dependent Microscopic Theory...

    Office of Scientific and Technical Information (OSTI)

    Fragment Yields Calculated in a Time-Dependent Microscopic Theory of Fission Citation ... Word Cloud More Like This Full Text preview image File size NAView Full Text View Full ...

  7. Hierarchy of scales in B{yields}PS decays

    SciTech Connect (OSTI)

    Delepine, D.; Lucio M, J. L.; Mendoza S, J. A.; Ramirez, Carlos A.

    2008-08-31

    We show that the naive factorization approach can accommodate the existence of the observed hierarchy of branching ratios for the B{yields}PS decays (P stands for pseudoscalar and S for scalar mesons respectively.

  8. Calculated secondary yields for proton broadband using DECAY TURTLE

    SciTech Connect (OSTI)

    Sondgeroth, A.

    1995-02-01

    The calculations for the yields were done by Al Sondgeroth and Anthony Malensek. The authors used the DECAY deck called PBSEC{_}E.DAT from the CMS DECKS library. After obtaining the run modes and calibration modes from the liaison physicist, they made individual decay runs, using DECAY TURTLE from the CMS libraries and a production spectrum subroutine which was modified by Anthony, for each particle and decay mode for all particle types coming out of the target box. Results were weighted according to branching ratios for particles with more than one decay mode. The production spectra were produced assuming beryllium as the target. The optional deuterium target available to broadband will produce slightly higher yields. It should be noted that they did not include pion yields from klong decays because they could not simulate three body decays. Pions from klongs would add a very small fraction to the total yield.

  9. Spinning Electrons Yield Positrons for Research | Jefferson Lab

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

    Spinning Electrons Yield Positrons for Research Electron-positron pairs (e- e+) result when an energetic electron beam strikes matter. If the electron beam is polarized, the polarization can be passed on to the new electrons and positrons. Spinning Electrons Yield Positrons for Research NEWPORT NEWS, VA, June 1, 2016 - Researchers use accelerators to coax the electron into performing a wide range of tricks to enable medical tests and treatments, improve product manufacturing, and power

  10. Laser Seeding Yields High-Power Coherent Terahertz Radiation

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

    Laser Seeding Yields High-Power Coherent Terahertz Radiation Laser Seeding Yields High-Power Coherent Terahertz Radiation Print Wednesday, 25 April 2007 00:00 Researchers at Berkeley Lab have been exploring the ways coherent synchrotron radiation (CSR) is generated in electron storage rings when femtosecond lasers are used to carve out ultrafast x-ray pulses by femtoslicing (see "Tailored Terahertz Pulses from a Laser-Modulated Electron Beam"). In their most recent work, the

  11. 2D 'Flat' Boron Yields a Superconducting Surprise

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

    2D 'Flat' Boron Yields a Superconducting Surprise 2D 'Flat' Boron Yields a Superconducting Surprise Simulations Run at NERSC Help Reveal Material's Superconducting Superpowers April 22, 2016 2Dboron Electrons with opposite momenta and spins pair up via lattice vibrations at low temperatures in 2D boron and give it superconducting properties. Image: Evgeni Penev, Rice University Density functional theory simulations run at NERSC helped Rice University researchers determine that two-dimensional

  12. Latest NERSC/Intel/Cray 'Dungeon Session' Yields Impressive Code

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

    Speedups Latest NERSC/Intel/Cray 'Dungeon Session' Yields Impressive Code Speedups Latest NERSC/Intel/Cray 'Dungeon Session' Yields Impressive Code Speedups Six NESAP Teams + 3 Days = Optimized Codes for KNL, Cori August 19, 2016 Contact: Kathy Kincade, +1 510 495 2124, kkincade@lbl.gov ixpug2015 Six application development teams participating in NESAP, NERSC's next-generation code optimization effort, gathered at Intel in early August for a marathon "dungeon" session designed to

  13. High-Pressure MOF Research Yields Structural Insights

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

    High-Pressure MOF Research Yields Structural Insights High-Pressure MOF Research Yields Structural Insights Print Wednesday, 26 February 2014 00:00 Metal-organic frameworks (MOFs) are a remarkable class of relatively new materials that exist as a subclass of a larger group called coordination networks. MOFs have shown promise in a variety of applications ranging from gas storage to ion exchange. The materials are comprised of organic linkers that bridge discrete metal building units. Accurate

  14. Higher Precision Analysis Doesn't Yield Pentaquark | Jefferson Lab

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

    Higher Precision Analysis Doesn't Yield Pentaquark Deuterium Researchers sent photons into deuterium nuclei to try to produce pentaquarks. If pentaquarks had been produced, sensitive detectors would have measured a particular mix of Kaons (K-mesons) and protons; neutrons could have been inferred from the data. The researchers did not detect this reaction. Image credit: JLab Higher Precision Analysis Doesn't Yield Pentaquark July 1, 2005 New, higher precision data that could only have been

  15. Structures for Three Membrane Transport Proteins Yield Functional Insights

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

    Structures for Three Membrane Transport Proteins Yield Functional Insights Structures for Three Membrane Transport Proteins Yield Functional Insights Print Wednesday, 27 January 2010 00:00 Cells depend on contact with their outside environment in order to thrive. Two examples illustrate why: In one, information needed to guide cellular processes is constantly transmitted across cell membranes by specialized proteins, and in the other, maintaining the right gradient of ions across the membrane is

  16. The {alpha}-induced thick-target {gamma}-ray yield from light elements

    SciTech Connect (OSTI)

    Heaton, R.K. |

    1994-10-01

    The {alpha}-induced thick-target {gamma}-ray yield from light elements has been measured in the energy range 5.6 MeV {le} E{sub {alpha}} {le} 10 MeV. The {gamma}-ray yield for > 2.1 MeV from thick targets of beryllium, boron nitride, sodium fluoride, magnesium, aluminum and silicon were measured using the {alpha}-particle beam from the Lawrence Berkeley Laboratories 88 in. cyclotron. The elemental yields from this experiment were used to construct the {alpha}-induced direct production {gamma}-ray spectrum from materials in the SNO detector, a large volume ultra-low background neutrino detector located in the Creighton mine near Sudbury, Canada. This background source was an order of magnitude lower than predicted by previous calculations. These measurements are in good agreement with theoretical calculations of this spectrum based on a statistical nuclear model of the reaction, with the gross high energy spectrum structure being reproduced to within a factor of two. Detailed comparison of experimental and theoretical excitation population distribution of several residual nuclei indicate the same level of agreement within experimental uncertainties.

  17. Sandia Energy - Energy Surety

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

    Energy Storage Systems, Energy Surety, Grid Integration, Infrastructure Security, Microgrid, Modeling & Analysis, News, News & Events, Partnership, Renewable Energy, SMART...

  18. Sandia Energy Energy Assurance

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

    DOE International Energy Storage Database Has Logged 420 Energy Storage Projects Worldwide with 123 GW of Installed Capacity http:energy.sandia.govdoe-international-energy-stora...

  19. Process gg{yields}h{sub 0}{yields}{gamma}{gamma} in the Lee-Wick standard model

    SciTech Connect (OSTI)

    Krauss, F.; Underwood, T. E. J.; Zwicky, R.

    2008-01-01

    The process gg{yields}h{sub 0}{yields}{gamma}{gamma} is studied in the Lee-Wick extension of the standard model (LWSM) proposed by Grinstein, O'Connell, and Wise. In this model, negative norm partners for each SM field are introduced with the aim to cancel quadratic divergences in the Higgs mass. All sectors of the model relevant to gg{yields}h{sub 0}{yields}{gamma}{gamma} are diagonalized and results are commented on from the perspective of both the Lee-Wick and higher-derivative formalisms. Deviations from the SM rate for gg{yields}h{sub 0} are found to be of the order of 15%-5% for Lee-Wick masses in the range 500-1000 GeV. Effects on the rate for h{sub 0}{yields}{gamma}{gamma} are smaller, of the order of 5%-1% for Lee-Wick masses in the same range. These comparatively small changes may well provide a means of distinguishing the LWSM from other models such as universal extra dimensions where same-spin partners to standard model fields also appear. Corrections to determinations of Cabibbo-Kobayashi-Maskawa (CKM) elements |V{sub t(b,s,d)}| are also considered and are shown to be positive, allowing the possibility of measuring a CKM element larger than unity, a characteristic signature of the ghostlike nature of the Lee-Wick fields.

  20. Soft collinear effective theory analysis of B{yields}K{pi}, B{yields}KK, and B{yields}{pi}{pi} decays

    SciTech Connect (OSTI)

    Bauer, Christian W.; Rothstein, Ira Z.; Stewart, Iain W.

    2006-08-01

    B{yields}K{pi} and related decays are studied in the heavy quark limit of QCD using the soft collinear effective theory (SCET). We focus on results that follow solely from integrating out the scale m{sub b}, without expanding the amplitudes for the physics at smaller scales such as {alpha}{sub s}({radical}(E{sub {pi}}{lambda}{sub QCD})). The reduction in the number of hadronic parameters in SCET leads to multiple predictions without the need of SU(3). We find that the CP-asymmetry in B{sup -}{yields}{pi}{sup 0}K{sup -} should have a similar magnitude and the same sign as the well measured asymmetry in B{sup 0}{yields}{pi}{sup +}K{sup -}. Our prediction for Br(K{sup +}{pi}{sup -}) exceeds the current experimental value at the 2{sigma} level. We also use our results to determine the corrections to the Lipkin and CP-asymmetry sum rules in the standard model and find them to be quite small, thus sharpening their utility as a tool to look for new physics.

  1. New class of supersymmetric signatures in the processes gg{yields}HH', VH

    SciTech Connect (OSTI)

    Gounaris, G. J.; Layssac, J.; Renard, F. M.

    2009-07-01

    Within the minimal supersymmetric model (MSSM) and standard model (SM) frameworks, we analyze the 1loop electroweak predictions for the helicity amplitudes describing the 17 processes gg{yields}HH', and the 9 processes gg{yields}VH; where H, H{sup '} denote Higgs or Goldstone bosons, while V=Z, W{sup {+-}}. Concentrating on MSSM, we then investigate how the asymptotic helicity conservation (HCns) property of supersymmetry (SUSY) affects the amplitudes at the LHC energy range and what is the corresponding situation in the SM, where no HCns theorem exists. HCns is subsequently used to construct many relations among the cross sections of the above MSSM processes, depending only on the standard MSSM angles {alpha} and {beta} characterizing the two Higgs doublets. These relations should be asymptotically exact but as the energy decreases toward the LHC range, mass-depending deviations should start appearing. Provided the SUSY scale is not too high, these relations may remain roughly correct, even at the LHC energy range.

  2. Energy Storage

    SciTech Connect (OSTI)

    Mukundan, Rangachary

    2014-09-30

    Energy storage technology is critical if the U.S. is to achieve more than 25% penetration of renewable electrical energy, given the intermittency of wind and solar. Energy density is a critical parameter in the economic viability of any energy storage system with liquid fuels being 10 to 100 times better than batteries. However, the economical conversion of electricity to fuel still presents significant technical challenges. This project addressed these challenges by focusing on a specific approach: efficient processes to convert electricity, water and nitrogen to ammonia. Ammonia has many attributes that make it the ideal energy storage compound. The feed stocks are plentiful, ammonia is easily liquefied and routinely stored in large volumes in cheap containers, and it has exceptional energy density for grid scale electrical energy storage. Ammonia can be oxidized efficiently in fuel cells or advanced Carnot cycle engines yielding water and nitrogen as end products. Because of the high energy density and low reactivity of ammonia, the capital cost for grid storage will be lower than any other storage application. This project developed the theoretical foundations of N2 catalysis on specific catalysts and provided for the first time experimental evidence for activation of Mo 2N based catalysts. Theory also revealed that the N atom adsorbed in the bridging position between two metal atoms is the critical step for catalysis. Simple electrochemical ammonia production reactors were designed and built in this project using two novel electrolyte systems. The first one demonstrated the use of ionic liquid electrolytes at room temperature and the second the use of pyrophosphate based electrolytes at intermediate temperatures (200 – 300 ºC). The mechanism of high proton conduction in the pyrophosphate materials was found to be associated with a polyphosphate second phase contrary to literature claims and ammonia production rates as high as 5X 10

  3. Method for improving product yields in an anionic metalloporphyrin-based artificial photosynthesis system

    DOE Patents [OSTI]

    Shelnutt, J.A.

    1984-11-29

    A method is disclosed improving product yields in an anionic metalloporphyrin-based artificial photosynthesis system for hydrogen generation. The method comprises forming an aqueous solution comprising an electron donor, methylviologen, and certain metalloporphyrins and metallochlorins, and irradiating said aqueous solution with light in the presence of a catalyst. In the photosynthesis process, solar energy is collected and stored in the form of a hydrogen. Ligands attached above and below the metalloporphyrin and metallochlorin plane are capable of sterically blocking photochemically inactive electrostatically bound ..pi..-..pi.. complexes which can develop.

  4. Method for improving product yields in an anionic metalloporphyrin-based artificial photosynthesis system

    DOE Patents [OSTI]

    Shelnutt, John A.

    1986-01-01

    A method for improving product yields in an anionic metalloporphyrin-based artificial photosynthesis system for hydrogen generation which comprises forming an aqueous solution comprising an electron donor, methylviologen, and certain metalloporphyrins and metallochlorins, and irradiating said aqueous solution with light in the presence of a catalyst. In the photosynthesis process, solar energy is collected and stored in the form of a gas hydrogen. Ligands attached above and below the metalloporphyrin and metallochlorin plane are capable of sterically blocking photochemically inactive electrostatically bound .pi.--.pi. complexes which can develop.

  5. Consistent scenario for B{yields}PS decays

    SciTech Connect (OSTI)

    Delepine, D.; Lucio M, J. L.; Mendoza S, J. A.; Ramirez, Carlos A.

    2008-12-01

    We consider B{yields}PS decays where P stands for pseudoscalar and S for a heavy (1500 MeV) scalar meson. We achieve agreement with available experimental data, which includes two orders of magnitude hierarchy, assuming the scalars mesons are two quark states. The contribution of the dipolar penguin operator O{sub 11} is quantified.

  6. Z{yields}bb and chiral currents in Higgsless models

    SciTech Connect (OSTI)

    Abe, Tomohiro; Tanabashi, Masaharu; Chivukula, R. Sekhar; Christensen, Neil D.; Hsieh, Ken; Simmons, Elizabeth H.; Matsuzaki, Shinya

    2009-04-01

    In this paper we compute the flavor-dependent chiral-logarithmic corrections to the decay Z{yields}bb in the three-site Higgsless model. We compute these corrections diagrammatically in the gaugeless limit in which the electroweak couplings vanish. We also compute the chiral-logarithmic corrections to the decay Z{yields}bb using a renormalization group equation analysis in effective field theory, and show that the results agree. In the process of this computation, we compute the form of the chiral current in the gaugeless limit of the three-site model, and consider the generalization to the N-site case. We elucidate the Ward-Takahashi identities which underlie the gaugeless limit calculation in the three-site model, and describe how the result for the Z{yields}bb amplitude is obtained in unitary gauge in the full theory. We find that the phenomenological constraints on the three-site Higgsless model arising from measurements of Z{yields}bb are relatively mild, requiring only that the heavy Dirac fermion be heavier than 1 TeV or so, and are satisfied automatically in the range of parameters allowed by other precision electroweak data.

  7. Nissan Showcases the Results of an Energy-Wise Corporate Culture

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

    to improve their technologies, operations, and processes. ... productive energy management program that has yielded reduction in energy usage even as the production scheduling has ...

  8. Effect of driver impedance on dense plasma focus Z-pinch neutron yield

    SciTech Connect (OSTI)

    Sears, Jason E-mail: schmidt36@llnl.gov; Link, Anthony E-mail: schmidt36@llnl.gov; Schmidt, Andrea E-mail: schmidt36@llnl.gov; Welch, Dale

    2014-12-15

    The Z-pinch phase of a dense plasma focus (DPF) heats the plasma by rapid compression and accelerates ions across its intense electric fields, producing neutrons through both thermonuclear and beam-target fusion. Driver characteristics have empirically been shown to affect performance, as measured by neutron yield per unit of stored energy. We are exploring the effect of driver characteristics on DPF performance using particle-in-cell (PIC) simulations of a kJ scale DPF. In this work, our PIC simulations are fluid for the run-down phase and transition to fully kinetic for the pinch phase, capturing kinetic instabilities, anomalous resistivity, and beam formation during the pinch. The anode-cathode boundary is driven by a circuit model of the capacitive driver, including system inductance, the load of the railgap switches, the guard resistors, and the coaxial transmission line parameters. It is known that the driver impedance plays an important role in the neutron yield: first, it sets the peak current achieved at pinch time; and second, it affects how much current continues to flow through the pinch when the pinch inductance and resistance suddenly increase. Here we show from fully kinetic simulations how total neutron yield depends on the impedance of the driver and the distributed parameters of the transmission circuit. Direct comparisons between the experiment and simulations enhance our understanding of these plasmas and provide predictive design capability for neutron source applications.

  9. Audit Report: OAI-M-16-15 | Department of Energy

    Office of Environmental Management (EM)

    The Department of Energy relies on contractors to perform a substantial part of its mission and reimburses its contractors for employee labor and benefit costs incurred. Employee ...

  10. Energy Department Releases Draft Advanced Fossil Energy Solicitation to Support Reductions in Greenhouse Gas Pollution

    Broader source: Energy.gov [DOE]

    As part of President Obama’s Climate Action Plan, DOE announced today a draft loan guarantee solicitation for innovative and advanced fossil energy projects and facilities that substantially reduce greenhouse gas and other air pollution.

  11. Technology Partnerships Are Yielding Reliable, Cost-Saving Appliances...

    Office of Environmental Management (EM)

    And the market for innovative water heaters that will save consumers money by saving energy is continuing to grow. In the U.S., the demand for energy-efficient water heaters grew ...

  12. Sandia Energy - Energy Assurance

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

    Energy Surety, Facilities, Global Climate & Energy, Grid Integration, Mesa del Sol, Microgrid, News, News & Events, Renewable Energy, SMART Grid, Solar Mesa del Sol Unveils First...

  13. Sandia Energy Energy Storage

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

    Sandia Participates in Preparation of New Mexico Renewable Energy Storage Report http:energy.sandia.govsandia-participates-in-preparation-of-new-mexico-renewable-energy-storage-...

  14. Sandia Energy Energy Efficiency

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

    Sandia's Energy Program Wins Two Federal Laboratory Consortium 2015 Awards http:energy.sandia.govsandias-energy-program-wins-two-federal-laboratory-consortium-2015-awards...

  15. Sandia Energy - Nuclear Energy

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

    Sandia's Brayton-Cycle Turbine Boosts Small Nuclear Reactor Efficiency Energy, Energy Efficiency, News, News & Events, Nuclear Energy Sandia's Brayton-Cycle Turbine Boosts Small...

  16. Do yield and quality of big bluestem and switchgrass feedstock decline over winter?

    SciTech Connect (OSTI)

    Jane M.F. Johnson; Garold L. Gresham

    2014-03-01

    Switchgrass (Panicum virgatum L.) and big bluestem (Andropogon gerdardii Vitman) are potential perennial bioenergy feedstocks. Feedstock storage limitations, labor constraints for harvest, and environmental benefits provided by perennials are rationales for developing localized perennial feedstock as an alternative or in conjunction with annual feedstocks (i.e., crop residues). Little information is available on yield, mineral, and thermochemical properties of native species as related to harvest time. The study’s objectives were to compare the feedstock quantity and quality between grasses harvested in the fall or the following spring. It was hypothesized that biomass yield may decline, but translocation and/or leaching of minerals from the feedstock would improve feedstock quality. Feedstock yield did not differ by crop, harvest time, or their interactions. Both grasses averaged 6.0 Mg ha-1 (fall) and 5.4 Mg ha-1 (spring) with similar high heating value (17.7 MJ kg-1). The K/(Ca + Mg) ratio, used as a quality indicator declined to below a 0.5 threshold, but energy yield (Megajoule per kilogram) decreased 13% by delaying harvest until spring. Only once during the four study-years were conditions ideal for early spring harvest, in contrast during another spring, very muddy conditions resulted in excessive soil contamination. Early spring harvest may be hampered by late snow, lodging, and muddy conditions that may delay or prevent harvest, and result in soil contamination of the feedstock. However, reducing slagging/fouling potential and the mass of mineral nutrients removed from the field without a dramatic loss in biomass or caloric content are reasons to delay harvest until spring.

  17. Study, Development, and Design of Replaceable Shear Yielding Steel Panel Damper

    SciTech Connect (OSTI)

    Murakami, Katsuhide; Keii, Michio

    2008-07-08

    For middle-high rise buildings, vibration controlled structures to reduce the damage of main frames are recently becoming general in Japan. A steel material damper is low price and excellent in the energy absorption efficiency at a large earthquake. Though the exchange of the dampers are necessary when an excessive accumulation of plasticity deformation occurs, a steel material damping system, which received an excessive accumulation of plasticity deformation after a large earthquake, can recover a seismic-proof performance and property value of the building after the replacement. In the paper, shear yielding steel panel dampers installed in the web of a beam connected with high tension bolt joint is introduced. This damper is made of low-yield point steel, and the advantages of this system are low cost, easy-production and easy-replacement. For this steel panel damper, the finite element method (FEM) analysis using the shell element model adjusted to 1/2 of 6.4 m beam span is executed to make the design most effective. Yielding property of the beam installing this damper, shape of the splice plate and the bolt orientation for the connecting are examined in this analysis. As a result, we found that the plastic strain extends uniformly to the entire damping panel when making the splice plate a trapezoidal shape. The basic performance confirmation examination was also done using the real scale examination model besides the FEM analysis, and the performance of the system was confirmed. In addition, design of a high rise building in which the steel shear-yielding panel dampers and oil dampers were adopted without disturbing an architectural plan is also introduced.

  18. Experiments Performed in Substantiation of the Conditioning of BN-350 Spent Cesium Traps Using Lead or Lead-Bismuth Alloy Filling Technology

    SciTech Connect (OSTI)

    O. Romanenko; I. Tazhibaeva; I. Yakovlev; A. Ivanov; D. Wells; A. Herrick; J. Michelbacher; S. Shiganakov

    2009-05-01

    The technology of cleaning cesium radionuclides from sodium coolant at the BN-350 fast reactor was realized in the form of cesium traps of two types: stationary devices connected to the circuit that was to be cleaned and in-core devices installed into the core of reactor when it was not under operation. Carbon-graphite materials were used as sorbents to collect and concentrate radioactive cesium, accumulated in the BN-350 reactor circuits over the decades of their operation, in relatively small volume traps which provided effective radiation-safe conditions for personnel working in proximity to the coolant and equipment of the primary circuit during BN-350 decommissioning. Spent cesium traps, as products unfit for further use, represent solid radioactive wastes. The presence of chemically active sodium, potassium and cesium that are able to react violently with water results in series of problems related to their disposal in the Republic of Kazakhstan. Considering the technology of filling spent cesium traps with lead/lead-bismuth alloy as a priority one for their conditioning, evaluations for safety substantiation were implemented. A set of experiments was implemented aimed at verification of calculations performed in substantiation of the proposed technology: filling a full scale cesium trap mock-up with sodium followed by its draining to determine the optimal regimes of draining; filling bench scale cesium trap mock-ups with sodium and cesium followed by sodium draining and filling with lead or lead-bismuth alloy at different temperatures and filling rates to chose the optimal regimes for filling spent cesium traps; implementation of leachability tests to determine the rate of cesium release from the filling materials into water. This paper provides a description of the experimental program carried out and the main results obtained.

  19. Comparison of Fission Product Yields and Their Impact

    SciTech Connect (OSTI)

    S. Harrison

    2006-02-01

    This memorandum describes the Naval Reactors Prime Contractor Team (NRPCT) Space Nuclear Power Program (SNPP) interest in determining the expected fission product yields from a Prometheus-type reactor and assessing the impact of these species on materials found in the fuel element and balance of plant. Theoretical yield calculations using ORIGEN-S and RACER computer models are included in graphical and tabular form in Attachment, with focus on the desired fast neutron spectrum data. The known fission product interaction concerns are the corrosive attack of iron- and nickel-based alloys by volatile fission products, such as cesium, tellurium, and iodine, and the radiological transmutation of krypton-85 in the coolant to rubidium-85, a potentially corrosive agent to the coolant system metal piping.

  20. Sandia Energy - Nuclear Energy

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

    Over Five Years Computational Modeling & Simulation, Energy, News, News & Events, Nuclear Energy, Partnership, Systems Analysis Consortium for Advanced Simulation of...

  1. Realization of Algae Potential Algae Biomass Yield Program

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

    Realization of Algae Potential Algae Biomass Yield Program March 25, 2015 Technology Area Review Peter Lammers, P.I. New Mexico State University -> Arizona State University This presentation does not contain any proprietary, confidential, or otherwise restricted information Goal Statement * Develop an integrated process for producing 2,500 gallons of bio-fuel intermediate per acre per year through radical improvements in algal areal productivity and lipid content * Successful demonstration

  2. Laser Seeding Yields High-Power Coherent Terahertz Radiation

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

    Laser Seeding Yields High-Power Coherent Terahertz Radiation Print Researchers at Berkeley Lab have been exploring the ways coherent synchrotron radiation (CSR) is generated in electron storage rings when femtosecond lasers are used to carve out ultrafast x-ray pulses by femtoslicing (see "Tailored Terahertz Pulses from a Laser-Modulated Electron Beam"). In their most recent work, the researchers reported the first observation of seeding an instability of the electron beam by the

  3. Laser Seeding Yields High-Power Coherent Terahertz Radiation

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

    Laser Seeding Yields High-Power Coherent Terahertz Radiation Print Researchers at Berkeley Lab have been exploring the ways coherent synchrotron radiation (CSR) is generated in electron storage rings when femtosecond lasers are used to carve out ultrafast x-ray pulses by femtoslicing (see "Tailored Terahertz Pulses from a Laser-Modulated Electron Beam"). In their most recent work, the researchers reported the first observation of seeding an instability of the electron beam by the

  4. Laser Seeding Yields High-Power Coherent Terahertz Radiation

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

    Laser Seeding Yields High-Power Coherent Terahertz Radiation Print Researchers at Berkeley Lab have been exploring the ways coherent synchrotron radiation (CSR) is generated in electron storage rings when femtosecond lasers are used to carve out ultrafast x-ray pulses by femtoslicing (see "Tailored Terahertz Pulses from a Laser-Modulated Electron Beam"). In their most recent work, the researchers reported the first observation of seeding an instability of the electron beam by the

  5. High-Pressure MOF Research Yields Structural Insights

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

    High-Pressure MOF Research Yields Structural Insights Print Metal-organic frameworks (MOFs) are a remarkable class of relatively new materials that exist as a subclass of a larger group called coordination networks. MOFs have shown promise in a variety of applications ranging from gas storage to ion exchange. The materials are comprised of organic linkers that bridge discrete metal building units. Accurate structural knowledge is key to the understanding of the applicability of these materials,

  6. High-Pressure MOF Research Yields Structural Insights

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

    High-Pressure MOF Research Yields Structural Insights Print Metal-organic frameworks (MOFs) are a remarkable class of relatively new materials that exist as a subclass of a larger group called coordination networks. MOFs have shown promise in a variety of applications ranging from gas storage to ion exchange. The materials are comprised of organic linkers that bridge discrete metal building units. Accurate structural knowledge is key to the understanding of the applicability of these materials,

  7. Nature-inspired nanostructures yield first atomic resolution of peptide

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

    nanosheet Nature-inspired nanostructures yield first atomic resolution of peptide nanosheet Click to share on Facebook (Opens in new window) Click to share on Twitter (Opens in new window) Click to share on Reddit (Opens in new window) Click to share on Pinterest (Opens in new window) This atomic-resolution simulation of a two-dimensional peptoid nanosheet reveals a snake-like structure never seen before. This research could help scentists design incredibly sensitive chemical detectors or

  8. Laser Seeding Yields High-Power Coherent Terahertz Radiation

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

    Laser Seeding Yields High-Power Coherent Terahertz Radiation Print Researchers at Berkeley Lab have been exploring the ways coherent synchrotron radiation (CSR) is generated in electron storage rings when femtosecond lasers are used to carve out ultrafast x-ray pulses by femtoslicing (see "Tailored Terahertz Pulses from a Laser-Modulated Electron Beam"). In their most recent work, the researchers reported the first observation of seeding an instability of the electron beam by the

  9. Laser Seeding Yields High-Power Coherent Terahertz Radiation

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

    Laser Seeding Yields High-Power Coherent Terahertz Radiation Print Researchers at Berkeley Lab have been exploring the ways coherent synchrotron radiation (CSR) is generated in electron storage rings when femtosecond lasers are used to carve out ultrafast x-ray pulses by femtoslicing (see "Tailored Terahertz Pulses from a Laser-Modulated Electron Beam"). In their most recent work, the researchers reported the first observation of seeding an instability of the electron beam by the

  10. High-Pressure MOF Research Yields Structural Insights

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

    High-Pressure MOF Research Yields Structural Insights Print Metal-organic frameworks (MOFs) are a remarkable class of relatively new materials that exist as a subclass of a larger group called coordination networks. MOFs have shown promise in a variety of applications ranging from gas storage to ion exchange. The materials are comprised of organic linkers that bridge discrete metal building units. Accurate structural knowledge is key to the understanding of the applicability of these materials,

  11. High-Pressure MOF Research Yields Structural Insights

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

    High-Pressure MOF Research Yields Structural Insights Print Metal-organic frameworks (MOFs) are a remarkable class of relatively new materials that exist as a subclass of a larger group called coordination networks. MOFs have shown promise in a variety of applications ranging from gas storage to ion exchange. The materials are comprised of organic linkers that bridge discrete metal building units. Accurate structural knowledge is key to the understanding of the applicability of these materials,

  12. High-Pressure MOF Research Yields Structural Insights

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

    High-Pressure MOF Research Yields Structural Insights Print Metal-organic frameworks (MOFs) are a remarkable class of relatively new materials that exist as a subclass of a larger group called coordination networks. MOFs have shown promise in a variety of applications ranging from gas storage to ion exchange. The materials are comprised of organic linkers that bridge discrete metal building units. Accurate structural knowledge is key to the understanding of the applicability of these materials,

  13. High-Pressure MOF Research Yields Structural Insights

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

    High-Pressure MOF Research Yields Structural Insights Print Metal-organic frameworks (MOFs) are a remarkable class of relatively new materials that exist as a subclass of a larger group called coordination networks. MOFs have shown promise in a variety of applications ranging from gas storage to ion exchange. The materials are comprised of organic linkers that bridge discrete metal building units. Accurate structural knowledge is key to the understanding of the applicability of these materials,

  14. High-Pressure MOF Research Yields Structural Insights

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

    High-Pressure MOF Research Yields Structural Insights Print Metal-organic frameworks (MOFs) are a remarkable class of relatively new materials that exist as a subclass of a larger group called coordination networks. MOFs have shown promise in a variety of applications ranging from gas storage to ion exchange. The materials are comprised of organic linkers that bridge discrete metal building units. Accurate structural knowledge is key to the understanding of the applicability of these materials,

  15. Structures for Three Membrane Transport Proteins Yield Functional Insights

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

    Structures for Three Membrane Transport Proteins Yield Functional Insights Print Cells depend on contact with their outside environment in order to thrive. Two examples illustrate why: In one, information needed to guide cellular processes is constantly transmitted across cell membranes by specialized proteins, and in the other, maintaining the right gradient of ions across the membrane is a process critical to the life and death of a cell. Membrane transport proteins-functioning either as

  16. Structures for Three Membrane Transport Proteins Yield Functional Insights

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

    Structures for Three Membrane Transport Proteins Yield Functional Insights Print Cells depend on contact with their outside environment in order to thrive. Two examples illustrate why: In one, information needed to guide cellular processes is constantly transmitted across cell membranes by specialized proteins, and in the other, maintaining the right gradient of ions across the membrane is a process critical to the life and death of a cell. Membrane transport proteins-functioning either as

  17. Structures for Three Membrane Transport Proteins Yield Functional Insights

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

    Structures for Three Membrane Transport Proteins Yield Functional Insights Print Cells depend on contact with their outside environment in order to thrive. Two examples illustrate why: In one, information needed to guide cellular processes is constantly transmitted across cell membranes by specialized proteins, and in the other, maintaining the right gradient of ions across the membrane is a process critical to the life and death of a cell. Membrane transport proteins-functioning either as

  18. Collaboration yields 'The Right Glasses' for observing mystery behavior

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

    in electrons Observing mystery behavior In electrons Collaboration yields 'The Right Glasses' for observing mystery behavior in electrons The research may lead to a better understanding of superconductors or development of better materials for powering high-speed electronics. December 13, 2007 Los Alamos National Laboratory sits on top of a once-remote mesa in northern New Mexico with the Jemez mountains as a backdrop to research and innovation covering multi-disciplines from bioscience,

  19. Structures for Three Membrane Transport Proteins Yield Functional Insights

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

    Structures for Three Membrane Transport Proteins Yield Functional Insights Print Cells depend on contact with their outside environment in order to thrive. Two examples illustrate why: In one, information needed to guide cellular processes is constantly transmitted across cell membranes by specialized proteins, and in the other, maintaining the right gradient of ions across the membrane is a process critical to the life and death of a cell. Membrane transport proteins-functioning either as

  20. ARRA Economic Impact and Jobs | Department of Energy

    Office of Environmental Management (EM)

    Decorative Vented Gas Fireplaces Would Impose Substantial Burdens on Manufacturers | Department of Energy A Requirement for Significant Reduction in the Maximum BTU Input Rate of Decorative Vented Gas Fireplaces Would Impose Substantial Burdens on Manufacturers A Requirement for Significant Reduction in the Maximum BTU Input Rate of Decorative Vented Gas Fireplaces Would Impose Substantial Burdens on Manufacturers Comment that a requirement to reduce the BTU input rate of existing decorative

  1. SU-E-T-602: Beryllium Seeds Implant for Photo-Neutron Yield Using External Beam Therapy

    SciTech Connect (OSTI)

    Koren, S; Veltchev, I; Furhang, E

    2014-06-01

    Purpose: To evaluate the Neutron yield obtained during prostate external beam irradiation. Methods: Neutrons, that are commonly a radiation safety concern for photon beams with energy above 10 MV, are induced inside a PTV from Beryllium implemented seeds. A high megavoltage photon beam delivered to a prostate will yield neutrons via the reaction Be-9(?,n)2?. Beryllium was chosen for its low gamma,n reaction cross-section threshold (1.67 MeV) to be combined with a high feasible 25 MV photon beam. This beam spectra has a most probable photon energy of 2.5 to 3.0 MeV and an average photon energy of about 5.8 MeV. For this feasibility study we simulated a Beryllium-made common seed dimension (0.1 cm diameter and 0.5 cm height) without taking into account encapsulation. We created a 0.5 cm grid loading pattern excluding the Urethra, using Variseed (Varian inc.) A total of 156 seeds were exported to a 4cm diameter prostate sphere, created in Fluka, a particle transport Monte Carlo Code. Two opposed 25 MV beams were simulated. The evaluation of the neutron dose was done by adjusting the simulated photon dose to a common prostate delivery (e.g. 7560 cGy in 42 fractions) and finding the corresponding neutron dose yield from the simulation. A variance reduction technique was conducted for the neutrons yield and transported. Results: An effective dose of 3.65 cGy due to neutrons was found in the prostate volume. The dose to central areas of the prostate was found to be about 10 cGy. Conclusion: The neutron dose yielded does not justify a clinical implant of Beryllium seeds. Nevertheless, one should investigate the Neutron dose obtained when a larger Beryllium loading is combined with commercially available 40 MeV Linacs.

  2. Enhancing digestibility and ethanol yield of Populus wood via expression of an engineered monolignol 4-O-methyltransferase

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Cai, Yuanheng; Zhang, Kewei; Kim, Hoon; Hou, Guichuan; Zhang, Xuebin; Yang, Huijun; Feng, Huan; Miller, Lisa; Ralph, John; Liu, Chang -Jun

    2016-06-28

    Producing cellulosic biofuels and bio-based chemicals from woody biomass is impeded by the presence of lignin polymer in the plant cell wall. Manipulating the monolignol biosynthetic pathway offers a promising approach to improved processability, but often impairs plant growth and development. Here, we show that expressing an engineered 4-O-methyltransferase that chemically modifies the phenolic moiety of lignin monomeric precursors, thus preventing their incorporation into the lignin polymer, substantially alters hybrid aspens’ lignin content and structure. Woody biomass derived from the transgenic aspens shows a 62% increase in the release of simple sugars and up to a 49% increase in themore » yield of ethanol when the woody biomass is subjected to enzymatic digestion and yeast-mediated fermentation. Furthermore, the cell wall structural changes do not affect growth and biomass production of the trees. Our study provides a useful strategy for tailoring woody biomass for bio-based applications.« less

  3. Stanford University | OSTI, US Dept of Energy Office of Scientific...

    Office of Scientific and Technical Information (OSTI)

    ... DOE awards 25 million to UC Berkeley, Stanford to lower cost of solar power Stanford's 2010 Department of Energy Office of Science Graduate Fellows Nanopillars yield more precise ...

  4. Opportunities for Energy Crop Production Based on Subfield Scale...

    Office of Scientific and Technical Information (OSTI)

    Incorporation of dedicated herbaceous energy crops into row crop landscapes is a promising means to supply an expanding biofuel industry while increasing biomass yields, benefiting ...

  5. Ktech Corporation Smart Grid Demonstration Project | Open Energy...

    Open Energy Info (EERE)

    a proven redox flow battery chemistry with a unique, patented design to yield an energy storage system that meets the combined safety, reliability, and cost requirements for...

  6. Neutrino self-energy operator in plasmas at ultrahigh energies

    SciTech Connect (OSTI)

    Kuznetsov, A. V. Mikheev, N. V. Shitova, A. M.

    2013-11-15

    A general expression for the neutrino self-energy operator in plasmas was obtained in the limit of ultrahigh energies. Quantitative estimations were performed for the boundaries of the region kinematically allowed for the 'neutrino-spin-light' process. An analysis of the additional neutrino energy in plasmas revealed that, in the cases where neutrino spin light was kinematically allowed, the processes v-bar{sub e} + e{sup -} {yields} W{sup -} and v-bar{sub l} + v{sub l} {yields} Z would be dominant.

  7. Relativistic Corrections to e+e- {yields} J/{psi} + {eta}c in...

    Office of Scientific and Technical Information (OSTI)

    Relativistic Corrections to e+e- yields Jpsi + etac in a Potential Model Citation Details In-Document Search Title: Relativistic Corrections to e+e- yields Jpsi + ...

  8. Yield improvement and defect reduction in steel casting (Technical...

    Office of Scientific and Technical Information (OSTI)

    Resource Type: Technical Report Resource Relation: Other Information: PBD: 16 Mar 2004 Research Org: University of Iowa (US) Sponsoring Org: USDOE Office of Energy Efficiency and ...

  9. DOE Investment Yields R&D 100 Award Winner in Energy-Efficient Lighting

    Broader source: Energy.gov [DOE]

    RTI International's nanofiber lighting improvement technology (NLITe™) has been honored with a 2011 R&D 100 Award. Established in 1963 by the editors of R&D Magazine, the annual R&D 100 Awards identify the 100 most significant, newly introduced research and development advances of the past year in multiple disciplines.

  10. Model-independent Higgs coupling measurements at the LHC using the H{yields}ZZ{yields}4l lineshape

    SciTech Connect (OSTI)

    Logan, Heather E.; Salvail, Jeff Z.

    2011-10-01

    We show that combining a direct measurement of the Higgs total width from the H{yields}ZZ{yields}4l lineshape with Higgs signal rate measurements allows Higgs couplings to be extracted in a model-independent way from CERN LHC data. Using existing experimental studies with 30 fb{sup -1} at one detector of the 14 TeV LHC, we show that the couplings squared of a 190 GeV Higgs to WW, ZZ, and gg can be extracted with statistical precisions of about 10%, and a 95% confidence level upper limit on an unobserved component of the Higgs decay width of about 22% of the standard model Higgs width can be set. The method can also be applied for heavier Higgs masses.

  11. Solar Energy Education. Renewable energy: a background text. [Includes glossary

    SciTech Connect (OSTI)

    Not Available

    1985-01-01

    Some of the most common forms of renewable energy are presented in this textbook for students. The topics include solar energy, wind power hydroelectric power, biomass ocean thermal energy, and tidal and geothermal energy. The main emphasis of the text is on the sun and the solar energy that it yields. Discussions on the sun's composition and the relationship between the earth, sun and atmosphere are provided. Insolation, active and passive solar systems, and solar collectors are the subtopics included under solar energy. (BCS)

  12. Energy Spectrum of Cosmic-Ray Electrons at TeV Energies

    SciTech Connect (OSTI)

    Aharonian, F.; Akhperjanian, A. G.; Sahakian, V.; Barres de Almeida, U.; Chadwick, P. M.; Cheesebrough, A.; Dickinson, H. J.; Hadjichristidis, C.; Keogh, D.; McComb, T. J. L.; Nolan, S. J.; Orford, K. J.; Osborne, J. L.; Rayner, S. M.; Rulten, C. B.; Spangler, D.; Ward, M.; Bazer-Bachi, A. R.; Borrel, V.; Olive, J-F.

    2008-12-31

    The very large collection area of ground-based {gamma}-ray telescopes gives them a substantial advantage over balloon or satellite based instruments in the detection of very-high-energy (>600 GeV) cosmic-ray electrons. Here we present the electron spectrum derived from data taken with the High Energy Stereoscopic System (H.E.S.S.) of imaging atmospheric Cherenkov telescopes. In this measurement, the first of this type, we are able to extend the measurement of the electron spectrum beyond the range accessible to direct measurements. We find evidence for a substantial steepening in the energy spectrum above 600 GeV compared to lower energies.

  13. Apparatus for collecting solar energy

    SciTech Connect (OSTI)

    Wildenrotter, K.

    1981-08-18

    Apparatus is described for collecting solar energy comprises a collector having a solar-energy collector surface. The collector is mounted on a support and is pivotable between an exposed position in which the collector surface faces the sun and a substantially horizontal sheltered position in which the collector surface faces the earth, thereby protecting the collector surface from the elements and facilitating access thereto for maintenance.

  14. Energy storage connection system

    DOE Patents [OSTI]

    Benedict, Eric L.; Borland, Nicholas P.; Dale, Magdelena; Freeman, Belvin; Kite, Kim A.; Petter, Jeffrey K.; Taylor, Brendan F.

    2012-07-03

    A power system for connecting a variable voltage power source, such as a power controller, with a plurality of energy storage devices, at least two of which have a different initial voltage than the output voltage of the variable voltage power source. The power system includes a controller that increases the output voltage of the variable voltage power source. When such output voltage is substantially equal to the initial voltage of a first one of the energy storage devices, the controller sends a signal that causes a switch to connect the variable voltage power source with the first one of the energy storage devices. The controller then causes the output voltage of the variable voltage power source to continue increasing. When the output voltage is substantially equal to the initial voltage of a second one of the energy storage devices, the controller sends a signal that causes a switch to connect the variable voltage power source with the second one of the energy storage devices.

  15. Knoop Hardness - Apparent Yield Stress Relationship in Ceramics

    SciTech Connect (OSTI)

    Swab, Jeffrey J; LaSalvia, Jerry; Wereszczak, Andrew A; Strong, Kevin T; Danna, Dominic; Ragan, Meredith E; Ritt, Patrick J

    2012-01-01

    In Tabor's classical studies of the deformation of metals, the yield stress (Y) and hardness (H) were shown to be related according to H/Y {approx} 3 for complete or fully plastic deformation. Since then it has been anecdotally shown for ceramics that this ratio is <3. Interest exists to explore this further so Hertzian indentation was used to measure the apparent yield stress of numerous ceramics and metals and their results were compared with each material's load-dependent Knoop hardness. The evaluated ceramics included standard reference materials for hardness (silicon nitride and tungsten carbide), silicon carbide, alumina, and glass. Several steel compositions were also tested for comparison. Knoop hardness measurements at 19.6 N (i.e., toward 'complete or fully plastic deformation'), showed that 2 < H/Y < 3 for the metals and 0.8 < H/Y < 1.8 for the glasses and ceramics. Being that H/Y {ne} 3 for the ceramics indicates that Tabor's analysis is either not applicable to ceramics or that full plastic deformation is not achieved with a Knoop indentation or both.

  16. Uncertainty in Simulating Wheat Yields Under Climate Change

    SciTech Connect (OSTI)

    Asseng, S.; Ewert, F.; Rosenzweig, C.; Jones, J.W.; Hatfield, Jerry; Ruane, Alex; Boote, K. J.; Thorburn, Peter; Rotter, R.P.; Cammarano, D.; Brisson, N.; Basso, B.; Martre, P.; Aggarwal, P.K.; Angulo, C.; Bertuzzi, P.; Biernath, C.; Challinor, AJ; Doltra, J.; Gayler, S.; Goldberg, R.; Grant, Robert; Heng, L.; Hooker, J.; Hunt, L.A.; Ingwersen, J.; Izaurralde, Roberto C.; Kersebaum, K.C.; Mueller, C.; Naresh Kumar, S.; Nendel, C.; O'Leary, G.O.; Olesen, JE; Osborne, T.; Palosuo, T.; Priesack, E.; Ripoche, D.; Semenov, M.A.; Shcherbak, I.; Steduto, P.; Stockle, Claudio O.; Stratonovitch, P.; Streck, T.; Supit, I.; Tao, F.; Travasso, M.; Waha, K.; Wallach, D.; White, J.W.; Williams, J.R.; Wolf, J.

    2013-09-01

    Anticipating the impacts of climate change on crop yields is critical for assessing future food security. Process-based crop simulation models are the most commonly used tools in such assessments1,2. Analysis of uncertainties in future greenhouse gas emissions and their impacts on future climate change has been increasingly described in the literature3,4 while assessments of the uncertainty in crop responses to climate change are very rare. Systematic and objective comparisons across impact studies is difficult, and thus has not been fully realized5. Here we present the largest coordinated and standardized crop model intercomparison for climate change impacts on wheat production to date. We found that several individual crop models are able to reproduce measured grain yields under current diverse environments, particularly if sufficient details are provided to execute them. However, simulated climate change impacts can vary across models due to differences in model structures and algorithms. The crop-model component of uncertainty in climate change impact assessments was considerably larger than the climate-model component from Global Climate Models (GCMs). Model responses to high temperatures and temperature-by-CO2 interactions are identified as major sources of simulated impact uncertainties. Significant reductions in impact uncertainties through model improvements in these areas and improved quantification of uncertainty through multi-model ensembles are urgently needed for a more reliable translation of climate change scenarios into agricultural impacts in order to develop adaptation strategies and aid policymaking.

  17. Department of Energy - Energy Tomorrow

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

    25 en Indian Energy Blog Archive http:energy.govindianenergylistingsindian-energy-blog-archive energy-blog-archive"...

  18. Sandia Energy - Nuclear Energy

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

    Computer Power Clicks with Geochemistry Energy, News, News & Events, Nuclear Energy Computer Power Clicks with Geochemistry Sandia is developing computer models that show how...

  19. Residential Energy Consumption Survey (RECS) - Analysis & Projections -

    Gasoline and Diesel Fuel Update (EIA)

    U.S. Energy Information Administration (EIA) What's new in our home energy use? RECS 2009 - Release date: March 28, 2011 First results from EIA's 2009 Residential Energy Consumption Survey (RECS) The 2009 RECS collected home energy characteristics data from over 12,000 U.S. households. This report highlights findings from the survey, with details presented in the Household Energy Characteristics tables. How we use energy in our homes has changed substantially over the past three decades.

  20. Higher Yields of Advanced Biofuels from Genetically Engineered...

    Office of Science (SC) Website

    a scalable, controllable, and economic route to fatty acid-based chemicals for bioenergy. ... To overcome this hurdle, researchers at the DOE Joint BioEnergy Institute replaced the ...

  1. Geothermal Lease Sale in Nevada Yields Record Bids

    Broader source: Energy.gov [DOE]

    The U.S. Department of the Interior (DOI) has received a record $28.2 million in bids for geothermal energy development on federal public lands in Nevada.

  2. Energy Information Administration - Energy Efficiency, energy...

    U.S. Energy Information Administration (EIA) Indexed Site

    Efficiency Energy Efficiency energy consumption savings households, buildings, industry & vehicles The Energy Efficiency Page reflects EIA's information on energy efficiency and...

  3. X-ray power and yield measurements at the refurbished Z machine

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Jones, M. C.; Ampleford, D. J.; Cuneo, M. E.; Hohlfelder, R.; Jennings, C. A.; Johnson, D. W.; Jones, B.; Lopez, M. R.; MacArthur, J.; Mills, J. A.; et al

    2014-08-04

    Advancements have been made in the diagnostic techniques to measure accurately the total radiated x-ray yield and power from z-pinch loads at the Z Machine with high accuracy. The Z-accelerator is capable of outputting 2MJ and 330 TW of x-ray yield and power, and accurately measuring these quantities is imperative. We will describe work over the past several years which include the development of new diagnostics, improvements to existing diagnostics, and implementation of automated data analysis routines. A set of experiments were conducted on the Z machine where the load and machine configuration were held constant. During this shot series,more » it was observed that total z-pinch x-ray emission power determined from the two common techniques for inferring the x-ray power, Kimfol filtered x-ray diode diagnostic and the Total Power and Energy diagnostic gave 450 TW and 327 TW respectively. Our analysis shows the latter to be the more accurate interpretation. More broadly, the comparison demonstrates the necessity to consider spectral response and field of view when inferring xray powers from z-pinch sources.« less

  4. Neutron temporal diagnostic for high-yield deuterium-tritium cryogenic implosions on OMEGA

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Stoeckl, C.; Boni, R.; Ehrne, F.; Forrest, C. J.; Glebov, V. Yu.; Katz, J.; Lonobile, D. J.; Magoon, J.; Regan, S. P.; Shoup, III, M. J.; et al

    2016-05-10

    A next-generation neutron temporal diagnostic (NTD) capable of recording high-quality data for the highest anticipated yield cryogenic DT implosion experiments was recently installed at the Omega Laser Facility. A high-quality measurement of the neutron production width is required to determine the hot-spot pressure achieved in inertial confinement fusion experiments—a key metric in assessing the quality of these implosions. The design of this NTD is based on a fast-rise-time plastic scintillator, which converts the neutron kinetic energy to 350- to 450-nm-wavelength light. The light from the scintillator inside the nose-cone assembly is relayed ~16 m to a streak camera in amore » well-shielded location. An ~200× reduction in neutron background was observed during the first high-yield DT cryogenic implosions compared to the current NTD installation on OMEGA. An impulse response of ~40±10 ps was measured in a dedicated experiment using hard x rays from a planar target irradiated with a 10-ps short pulse from the OMEGA EP laser. Furthermore, the measured instrument response includes contributions from the scintillator rise time, optical relay, and streak camera.« less

  5. Radiant energy collector

    DOE Patents [OSTI]

    McIntire, William R.

    1983-01-01

    A cylindrical radiant energy collector is provided which includes a reflector spaced apart from an energy absorber. The reflector is of a particular shape which ideally eliminates gap losses. The reflector includes a plurality of adjacent facets of V shaped segments sloped so as to reflect all energy entering between said absorber and said reflector onto said absorber. The outer arms of each facet are sloped to reflect one type of extremal ray in a line substantially tangent to the lowermost extremity of the energy absorber. The inner arms of the facets are sloped to reflect onto the absorber all rays either falling directly thereon or as a result of reflection from an outer arm.

  6. Renewable Energy

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

    Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas ...

  7. Energy Storage

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

    5 - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion ...

  8. Energy Storage

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

    4 - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion ...

  9. Transportation Energy

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

    3 - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion ...

  10. Transportation Energy

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

    2 - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion ...

  11. Renewable Energy

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

    Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water ...

  12. Aquion Energy

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

    Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage ...

  13. Integrated semiconductor quantum dot scintillation detector: Ultimate limit for speed and light yield

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Oktyabrsky, Serge; Yakimov, Michael; Tokranov, Vadim; Murat, Pavel

    2016-03-30

    Here, a picosecond-range timing of charged particles and photons is a long-standing challenge for many high-energy physics, biophysics, medical and security applications. We present a design, technological pathway and challenges, and some properties important for realization of an ultrafast high-efficient room-temperature semiconductor scintillator based on self-assembled InAs quantum dots (QD) embedded in a GaAs matrix. Low QD density (<; 1015 cm-3), fast (~5 ps) electron capture, luminescence peak redshifted by 0.2-0.3 eV from GaAs absorption edge with fast decay time (0.5-1 ns) along with the efficient energy transfer in the GaAs matrix (4.2 eV/pair) allows for fabrication of a semiconductormore » scintillator with the unsurpassed performance parameters. The major technological challenge is fabrication of a large volume (> 1 cm3 ) of epitaxial QD medium. This requires multiple film separation and bonding, likely using separate epitaxial films as waveguides for improved light coupling. Compared to traditional inorganic scintillators, the semiconductor-QD based scintillators could have about 5x higher light yield and 20x faster decay time, opening a way to gamma detectors with the energy resolution better than 1% and sustaining counting rates MHz. Picosecond-scale timing requires segmented low-capacitance photodiodes integrated with the scintillator. For photons, the proposed detector inherently provides the depth-of-interaction information.« less

  14. Reduced yield stress for zirconium exposed to iodine: Reactive force field simulation

    SciTech Connect (OSTI)

    Rossi, Matthew L.; Taylor, Christopher D.; van Duin, Adri C. T.

    2014-11-04

    Iodine-induced stress-corrosion cracking (ISCC), a known failure mode for nuclear fuel cladding, occurs when iodine generated during the irradiation of a nuclear fuel pellet escapes the pellet through diffusion or thermal cracking and chemically interacts with the inner surface of the clad material, inducing a subsequent effect on the cladding’s resistance to mechanical stress. To complement experimental investigations of ISCC, a reactive force field (ReaxFF) compatible with the Zr-I chemical and materials systems has been developed and applied to simulate the impact of iodine exposure on the mechanical strength of the material. The study shows that the material’s resistance to stress (as captured by the yield stress of a high-energy grain boundary) is related to the surface coverage of iodine, with the implication that ISCC is the result of adsorption-enhanced decohesion.

  15. Reduced yield stress for zirconium exposed to iodine: Reactive force field simulation

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Rossi, Matthew L.; Taylor, Christopher D.; van Duin, Adri C. T.

    2014-11-04

    Iodine-induced stress-corrosion cracking (ISCC), a known failure mode for nuclear fuel cladding, occurs when iodine generated during the irradiation of a nuclear fuel pellet escapes the pellet through diffusion or thermal cracking and chemically interacts with the inner surface of the clad material, inducing a subsequent effect on the cladding’s resistance to mechanical stress. To complement experimental investigations of ISCC, a reactive force field (ReaxFF) compatible with the Zr-I chemical and materials systems has been developed and applied to simulate the impact of iodine exposure on the mechanical strength of the material. The study shows that the material’s resistance tomore » stress (as captured by the yield stress of a high-energy grain boundary) is related to the surface coverage of iodine, with the implication that ISCC is the result of adsorption-enhanced decohesion.« less

  16. Surface structures for enhancement of quantum yield in broad spectrum emission nanocrystals

    SciTech Connect (OSTI)

    Schreuder, Michael A.; McBride, James R.; Rosenthal, Sandra J.

    2014-07-22

    Disclosed are inorganic nanoparticles comprising a body comprising cadmium and/or zinc crystallized with selenium, sulfur, and/or tellurium; a multiplicity of phosphonic acid ligands comprising at least about 20% of the total surface ligand coverage; wherein the nanocrystal is capable of absorbing energy from a first electromagnetic region and capable of emitting light in a second electromagnetic region, wherein the maximum absorbance wavelength of the first electromagnetic region is different from the maximum emission wavelength of the second electromagnetic region, thereby providing a Stokes shift of at least about 20 nm, wherein the second electromagnetic region comprises an at least about 100 nm wide band of wavelengths, and wherein the nanoparticle exhibits has a quantum yield of at least about 10%. This abstract is intended as a scanning tool for purposes of searching in the particular art and is not intended to be limiting of the present invention.

  17. Energy Conservation Tax Credits- Small Premium Projects (Personal)

    Broader source: Energy.gov [DOE]

    Energy conservation projects include projects with investments for which the first year energy savings yields a simple payback period of greater than three years. Projects with a total cost of less...

  18. New Refrigerant Boosts Energy Efficiency of Supermarket Display Cases

    Broader source: Energy.gov [DOE]

    Research supported by the Energy Departments Building Technologies Office has led to a major breakthrough in refrigeration systems efficiency, and the result may yield big energy savings for...

  19. Energy Conservation Tax Credits- Small Premium Projects (Corporate)

    Broader source: Energy.gov [DOE]

    Energy conservation projects include projects with investments for which the first year energy savings yields a simple payback period of greater than three years. Projects with a total cost of less...

  20. Energy Signal Tool for Decision Support in Building Energy Systems

    SciTech Connect (OSTI)

    Henze, G. P.; Pavlak, G. S.; Florita, A. R.; Dodier, R. H.; Hirsch, A. I.

    2014-12-01

    A prototype energy signal tool is demonstrated for operational whole-building and system-level energy use evaluation. The purpose of the tool is to give a summary of building energy use which allows a building operator to quickly distinguish normal and abnormal energy use. Toward that end, energy use status is displayed as a traffic light, which is a visual metaphor for energy use that is either substantially different from expected (red and yellow lights) or approximately the same as expected (green light). Which light to display for a given energy end use is determined by comparing expected to actual energy use. As expected, energy use is necessarily uncertain; we cannot choose the appropriate light with certainty. Instead, the energy signal tool chooses the light by minimizing the expected cost of displaying the wrong light. The expected energy use is represented by a probability distribution. Energy use is modeled by a low-order lumped parameter model. Uncertainty in energy use is quantified by a Monte Carlo exploration of the influence of model parameters on energy use. Distributions over model parameters are updated over time via Bayes' theorem. The simulation study was devised to assess whole-building energy signal accuracy in the presence of uncertainty and faults at the submetered level, which may lead to tradeoffs at the whole-building level that are not detectable without submetering.

  1. Assessment of potential life-cycle energy and greenhouse gas emission effects from using corn-based butanol as a transportation fuel.

    SciTech Connect (OSTI)

    Wu, M.; Wang, M.; Liu, J.; Huo, H.; Energy Systems

    2008-01-01

    Since advances in the ABE (acetone-butanol-ethanol) fermentation process in recent years have led to significant increases in its productivity and yields, the production of butanol and its use in motor vehicles have become an option worth evaluating. This study estimates the potential life-cycle energy and emission effects associated with using bio-butanol as a transportation fuel. It employs a well-to-wheels (WTW) analysis tool: the Greenhouse Gases, Regulated Emissions, and Energy Use in Transportation (GREET) model. The estimates of life-cycle energy use and greenhouse gas (GHG) emissions are based on an Aspen Plus(reg. sign) simulation for a corn-to-butanol production process, which describes grain processing, fermentation, and product separation. Bio-butanol-related WTW activities include corn farming, corn transportation, butanol production, butanol transportation, and vehicle operation. In this study, we also analyzed the bio-acetone that is coproduced with bio-butanol as an alternative to petroleum-based acetone. We then compared the results for bio-butanol with those of conventional gasoline. Our study shows that driving vehicles fueled with corn-based butanol produced by the current ABE fermentation process could result in substantial fossil energy savings (39%-56%) and avoid large percentage of the GHG emission burden, yielding a 32%-48% reduction relative to using conventional gasoline. On energy basis, a bushel of corn produces less liquid fuel from the ABE process than that from the corn ethanol dry mill process. The coproduction of a significant portion of acetone from the current ABE fermentation presents a challenge. A market analysis of acetone, as well as research and development on robust alternative technologies and processes that minimize acetone while increase the butanol yield, should be conducted.

  2. Film quantum yields of EUV& ultra-high PAG photoresists

    SciTech Connect (OSTI)

    Hassanein, Elsayed; Higgins, Craig; Naulleau, Patrick; Matyi, Richard; Gallatin, Greg; Denbeaux, Gregory; Antohe, Alin; Thackery, Jim; Spear, Kathleen; Szmanda, Charles; Anderson, Christopher N.; Niakoula, Dimitra; Malloy, Matthew; Khurshid, Anwar; Montgomery, Cecilia; Piscani, Emil C.; Rudack, Andrew; Byers, Jeff; Ma, Andy; Dean, Kim; Brainard, Robert

    2008-01-10

    Base titration methods are used to determine C-parameters for three industrial EUV photoresist platforms (EUV-2D, MET-2D, XP5496) and twenty academic EUV photoresist platforms. X-ray reflectometry is used to measure the density of these resists, and leads to the determination of absorbance and film quantum yields (FQY). Ultrahigh levels ofPAG show divergent mechanisms for production of photo acids beyond PAG concentrations of 0.35 moles/liter. The FQY of sulfonium PAGs level off, whereas resists prepared with iodonium PAG show FQY s that increase beyond PAG concentrations of 0.35 moles/liter, reaching record highs of 8-13 acids generatedlEUV photons absorbed.

  3. Energy recovery system

    DOE Patents [OSTI]

    Moore, Albert S.; Verhoff, Francis H.

    1980-01-01

    The present invention is directed to an improved wet air oxidation system and method for reducing the chemical oxygen demand (COD) of waste water used from scrubbers of coal gasification plants, with this COD reduction being sufficient to effectively eliminate waste water as an environmental pollutant. The improvement of the present invention is provided by heating the air used in the oxidation process to a temperature substantially equal to the temperature in the oxidation reactor before compressing or pressurizing the air. The compression of the already hot air further heats the air which is then passed in heat exchange with gaseous products of the oxidation reaction for "superheating" the gaseous products prior to the use thereof in turbines as the driving fluid. The superheating of the gaseous products significantly minimizes condensation of gaseous products in the turbine so as to provide a substantially greater recovery of mechanical energy from the process than heretofore achieved.

  4. Stockbridge-Munsee Community - 2012 Project | Department of Energy

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

    There are four potential energy sources or strategies that could be used at the site that are currently not utilized. This site offers substantial potential for both solar thermal ...

  5. DOE Success Stories: The Energy Mission in the Marketplace

    DOE R&D Accomplishments [OSTI]

    1995-05-01

    Many outputs of Department of Energy research and development have had substantial economic success in the marketplace and have proven to be fundamentally important in technical areas, positioning U.S. industry at the forefront of global competition.

  6. Helium Energy | Open Energy Information

    Open Energy Info (EERE)

    Energy Jump to: navigation, search Name: Helium Energy Place: Spain Sector: Renewable Energy Product: Spain-based renewable energy development company. References: Helium Energy1...

  7. Semplice Energy | Open Energy Information

    Open Energy Info (EERE)

    Semplice Energy Jump to: navigation, search Name: Semplice Energy Place: Reading, United Kingdom Sector: Efficiency, Renewable Energy Product: Semplice Energy is an energy...

  8. Vision Energy | Open Energy Information

    Open Energy Info (EERE)

    Energy Jump to: navigation, search Name: Vision Energy Place: Cincinnati, Ohio Zip: 45227 Sector: Wind energy Product: Vision Energy focuses on wind energy development and...

  9. Best Energy | Open Energy Information

    Open Energy Info (EERE)

    Best Energy Place: Italy Sector: Renewable Energy Product: Italy-based energy company engaged in the development of renewable energy projects. References: Best Energy1 This...

  10. Levelized Cost of Energy: A Parametric Study

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

    Even if all other variables are held constant, the annual energy yield (kWhkW p ) will vary among module technologies because of differences in response to low-light levels and ...

  11. Invariant-mass distribution of cc in {upsilon}(1S){yields}cc+X

    SciTech Connect (OSTI)

    Chung, Hee Sok; Kim, Taewon; Lee, Jungil

    2008-12-01

    We calculate the invariant-mass distribution for the cc pair produced in the inclusive {upsilon}(1S) decay based on the color-singlet mechanism of the nonrelativistic quantum chromodynamics factorization approach at leading order in the bottom-quark velocity v{sub b} in the meson rest frame. As the short-distance processes, we consider bb{yields}g*gg followed by g*{yields}cc and bb{yields}{gamma}*{yields}cc at leading order in the strong coupling. The invariant-mass distribution of the bb{yields}ccgg contribution has a sharp peak just above the threshold and that of the bb{yields}{gamma}*{yields}cc channel is concentrated at the maximally allowed kinematic end point. We predict that {gamma}[{upsilon}(1S){yields}cc+X]/{gamma}[{upsilon}(1S){yields}light hadrons]=(0.065{+-}0.048){alpha}{sub s}, which is in agreement with a previous result within errors.

  12. High-yield hydrogen production from biomass by in vitro metabolic engineering: Mixed sugars coutilization and kinetic modeling

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Rollin, Joseph A.; Martin del Campo, Julia; Myung, Suwan; Sun, Fangfang; You, Chun; Bakovic, Allison; Castro, Roberto; Chandrayan, Sanjeev K.; Wu, Chang-Hao; Adams, Michael W. W.; et al

    2015-04-06

    The use of hydrogen (H2) as a fuel offers enhanced energy conversion efficiency and tremendous potential to decrease greenhouse gas emissions, but producing it in a distributed, carbon-neutral, low-cost manner requires new technologies. Herein we demonstrate the complete conversion of glucose and xylose from plant biomass to H2 and CO2 based on an in vitro synthetic enzymatic pathway. Glucose and xylose were simultaneously converted to H2 with a yield of two H2 per carbon, the maximum possible yield. Parameters of a nonlinear kinetic model were fitted with experimental data using a genetic algorithm, and a global sensitivity analysis was usedmore » to identify the enzymes that have the greatest impact on reaction rate and yield. After optimizing enzyme loadings using this model, volumetric H2 productivity was increased 3-fold to 32 mmol H2∙L₋1∙h₋1. The productivity was further enhanced to 54 mmol H2∙L₋1∙h₋1 by increasing reaction temperature, substrate, and enzyme concentrations—an increase of 67-fold compared with the initial studies using this method. The production of hydrogen from locally produced biomass is a promising means to achieve global green energy production.« less

  13. High-yield hydrogen production from biomass by in vitro metabolic engineering: Mixed sugars coutilization and kinetic modeling

    SciTech Connect (OSTI)

    Rollin, Joseph A.; Martin del Campo, Julia; Myung, Suwan; Sun, Fangfang; You, Chun; Bakovic, Allison; Castro, Roberto; Chandrayan, Sanjeev K.; Wu, Chang-Hao; Adams, Michael W. W.; Senger, Ryan S.; Zhang, Y. -H. Percival

    2015-04-06

    The use of hydrogen (H2) as a fuel offers enhanced energy conversion efficiency and tremendous potential to decrease greenhouse gas emissions, but producing it in a distributed, carbon-neutral, low-cost manner requires new technologies. Herein we demonstrate the complete conversion of glucose and xylose from plant biomass to H2 and CO2 based on an in vitro synthetic enzymatic pathway. Glucose and xylose were simultaneously converted to H2 with a yield of two H2 per carbon, the maximum possible yield. Parameters of a nonlinear kinetic model were fitted with experimental data using a genetic algorithm, and a global sensitivity analysis was used to identify the enzymes that have the greatest impact on reaction rate and yield. After optimizing enzyme loadings using this model, volumetric H2 productivity was increased 3-fold to 32 mmol H2∙L₋1∙h₋1. The productivity was further enhanced to 54 mmol H2∙L₋1∙h₋1 by increasing reaction temperature, substrate, and enzyme concentrations—an increase of 67-fold compared with the initial studies using this method. The production of hydrogen from locally produced biomass is a promising means to achieve global green energy production.

  14. Geothermal Energy Projects | Department of Energy

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

    Geothermal Energy Projects Geothermal Energy Projects Geothermal Energy Projects Geothermal Energy Projects Geothermal Energy Projects Geothermal Energy Projects Geothermal Energy ...

  15. Calculated fission-fragment yield systematics in the region 74 <=Z <= 94 and 90 <=N <= 150

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Möller, Peter; Randrup, Jørgen

    2015-04-01

    Background: In the seminal experiment by Schmidt et al. [Nucl. Phys. A 665, 221 (2000)] in which fission-fragment charge distributions were obtained for 70 nuclides, asymmetric distributions were seen above nucleon number A ≈ 226 and symmetric ones below. Because asymmetric fission had often loosely been explained as a preference for the nucleus to always exploit the extra binding of fragments near ¹³²Sn it was assumed that all systems below A ≈ 226 would fission symmetrically because available isotopes do not have a proton-to-neutron Z/N ratio that allows division into fragments near ¹³²Sn. But the finding by Andreyev et al.more » [Phys. Rev. Lett. 105, 252502 (2010)] did not conform to this expectation because the compound system ¹⁸⁰Hg was shown to fission asymmetrically. It was suggested that this was a new type of asymmetric fission, because no strong shell effects occur for any possible fragment division. Purpose: We calculate a reference database for fission-fragment mass yields for a large region of the nuclear chart comprising 987 nuclides. A particular aim is to establish whether ¹⁸⁰Hg is part of a contiguous region of asymmetric fission, and if so, its extent, or if not, in contrast to the actinides, there are scattered smaller groups of nuclei that fission asymmetrically in this area of the nuclear chart. Methods: We use the by now well benchmarked Brownian shape-motion method and perform random walks on the previously calculated five-dimensional potential-energy surfaces. The calculated shell corrections are damped out with energy according to a prescription developed earlier. Results: We have obtained a theoretical reference database of fission-fragment mass yields for 987 nuclides. These results show an extended region of asymmetric fission with approximate extension 74 ≤ Z ≤ 85 and 100 ≤ N ≤ 120. The calculated yields are highly variable. We show 20 representative plots of these variable features and summarize the main

  16. Calculated fission-fragment yield systematics in the region 74 <=Z <= 94 and 90 <=N <= 150

    SciTech Connect (OSTI)

    Mller, Peter; Randrup, Jrgen

    2015-04-01

    Background: In the seminal experiment by Schmidt et al. [Nucl. Phys. A 665, 221 (2000)] in which fission-fragment charge distributions were obtained for 70 nuclides, asymmetric distributions were seen above nucleon number A ? 226 and symmetric ones below. Because asymmetric fission had often loosely been explained as a preference for the nucleus to always exploit the extra binding of fragments near Sn it was assumed that all systems below A ? 226 would fission symmetrically because available isotopes do not have a proton-to-neutron Z/N ratio that allows division into fragments near Sn. But the finding by Andreyev et al. [Phys. Rev. Lett. 105, 252502 (2010)] did not conform to this expectation because the compound system ??Hg was shown to fission asymmetrically. It was suggested that this was a new type of asymmetric fission, because no strong shell effects occur for any possible fragment division. Purpose: We calculate a reference database for fission-fragment mass yields for a large region of the nuclear chart comprising 987 nuclides. A particular aim is to establish whether ??Hg is part of a contiguous region of asymmetric fission, and if so, its extent, or if not, in contrast to the actinides, there are scattered smaller groups of nuclei that fission asymmetrically in this area of the nuclear chart. Methods: We use the by now well benchmarked Brownian shape-motion method and perform random walks on the previously calculated five-dimensional potential-energy surfaces. The calculated shell corrections are damped out with energy according to a prescription developed earlier. Results: We have obtained a theoretical reference database of fission-fragment mass yields for 987 nuclides. These results show an extended region of asymmetric fission with approximate extension 74 ? Z ? 85 and 100 ? N ? 120. The calculated yields are highly variable. We show 20 representative plots of these variable features and summarize the main aspects of our results

  17. Calculated fission-fragment yield systematics in the region 74 <=Z <= 94 and 90 <=N <= 150

    SciTech Connect (OSTI)

    Möller, Peter; Randrup, Jørgen

    2015-04-01

    Background: In the seminal experiment by Schmidt et al. [Nucl. Phys. A 665, 221 (2000)] in which fission-fragment charge distributions were obtained for 70 nuclides, asymmetric distributions were seen above nucleon number A ≈ 226 and symmetric ones below. Because asymmetric fission had often loosely been explained as a preference for the nucleus to always exploit the extra binding of fragments near ¹³²Sn it was assumed that all systems below A ≈ 226 would fission symmetrically because available isotopes do not have a proton-to-neutron Z/N ratio that allows division into fragments near ¹³²Sn. But the finding by Andreyev et al. [Phys. Rev. Lett. 105, 252502 (2010)] did not conform to this expectation because the compound system ¹⁸⁰Hg was shown to fission asymmetrically. It was suggested that this was a new type of asymmetric fission, because no strong shell effects occur for any possible fragment division. Purpose: We calculate a reference database for fission-fragment mass yields for a large region of the nuclear chart comprising 987 nuclides. A particular aim is to establish whether ¹⁸⁰Hg is part of a contiguous region of asymmetric fission, and if so, its extent, or if not, in contrast to the actinides, there are scattered smaller groups of nuclei that fission asymmetrically in this area of the nuclear chart. Methods: We use the by now well benchmarked Brownian shape-motion method and perform random walks on the previously calculated five-dimensional potential-energy surfaces. The calculated shell corrections are damped out with energy according to a prescription developed earlier. Results: We have obtained a theoretical reference database of fission-fragment mass yields for 987 nuclides. These results show an extended region of asymmetric fission with approximate extension 74 ≤ Z ≤ 85 and 100 ≤ N ≤ 120. The calculated yields are highly variable. We show 20 representative plots of these variable features and summarize the

  18. Impacts of side chain and excess energy on the charge photogeneration dynamics of low-bandgap copolymer-fullerene blends

    SciTech Connect (OSTI)

    Huo, Ming-Ming Zhang, Jian-Ping E-mail: hjhzlz@iccas.ac.cn; Department of Chemistry, Renmin University of China, Beijing 100872 ; Hu, Rong Xing, Ya-Dong Liu, Yu-Chen Ai, Xi-Cheng; Hou, Jian-Hui E-mail: hjhzlz@iccas.ac.cn

    2014-02-28

    Primary charge photogeneration dynamics in neat and fullerene-blended films of a pair of alternating benzo[1,2-b:4,5-b{sup ?}]dithiophene (BDT) and thieno[3,4-b]thiophene (TT) copolymers are comparatively studied by using near-infrared, time-resolved absorption (TA) spectroscopy under low excitation photon fluence. PBDTTT-E and PBDTTT-C, differed merely in the respective TT-substituents of ester (-E) and carbonyl (-C), show distinctly different charge photogeneration dynamics. The pair of neat PBDTTT films show exciton lifetimes of ?0.1 ns and fluorescence quantum yields below 0.2%, as well as prominent excess-energy enhanced exciton dissociation. In addition, PBDTTT-C gives rise to >50% higher P{sup +} yield than PBDTTT-E does irrespective to the excitation photon energy. Both PBDTTT-E:PC{sub 61}BM and PBDTTT-C:PC{sub 61}BM blends show subpicosecond exciton lifetimes and nearly unitary fluorescence quenching efficiency and, with respect to the former blend, the latter one shows substantially higher branching ratio of charge separated (CS) state over interfacial charge transfer (ICT) state, and hence more efficient exciton-to-CS conversion. For PBDTTT-C:PC{sub 61}BM, the ultrafast charge dynamics clearly show the processes of ICT-CS interconversion and P{sup +} migration, which are possibly influenced by the ICT excess energy. However, such processes are relatively indistinctive in the case of PBDTTT-E:PC{sub 61}BM. The results strongly prove the importance of ICT dissociation in yielding free charges, and are discussed in terms of the film morphology and the precursory solution-phase macromolecular conformation.

  19. Rigidifying Fluorescent Linkers by Metal-Organic Framework Formation for Fluorescence Blue Shift and Quantum Yield Enhancement

    SciTech Connect (OSTI)

    Wei, ZW; Gu, ZY; Arvapally, RK; Chen, YP; McDougald, RN; Ivy, JF; Yakovenko, AA; Feng, DW; Omary, MA; Zhou, HC

    2014-06-11

    We demonstrate that rigidifying the structure of fluorescent linkers by structurally constraining them in metal-organic frameworks (MOFs) to control their conformation effectively tunes the fluorescence energy and enhances the quantum yield. Thus, a new tetraphenylethylene-based zirconium MOF exhibits a deep-blue fluorescent emission at 470 nm with a unity quantum yield (99.9 +/- 0.5%) under Ar, representing ca. 3600 cm(-1) blue shift and doubled radiative decay efficiency vs the linker precursor. An anomalous increase in the fluorescence lifetime and relative intensity takes place upon heating the solid MOF from cryogenic to ambient temperatures. The origin of these unusual photoluminescence properties is attributed to twisted linker conformation, intramolecular hindrance, and framework rigidity.

  20. Rigidifying Fluorescent Linkers by Metal–Organic Framework Formation for Fluorescence Blue Shift and Quantum Yield Enhancement

    SciTech Connect (OSTI)

    Wei, Zhangwen; Gu, Zhi-Yuan; Arvapally, Ravi K.; Chen, Ying-Pin; Ivy, Joshua F.; Yakovenko, Andrey A.; Feng, Dawei; Omary, Mohammad A.; Zhou, Hong-Cai

    2014-06-11

    We demonstrate that rigidifying the structure of fluorescent linkers by structurally constraining them in metal–organic frameworks (MOFs) to control their conformation effectively tunes the fluorescence energy and enhances the quantum yield. Thus, a new tetraphenylethylene-based zirconium MOF exhibits a deep-blue fluorescent emission at 470 nm with a unity quantum yield (99.9 ± 0.5%) under Ar, representing ca. 3600 cm⁻¹ blue shift and doubled radiative decay efficiency vs the linker precursor. An anomalous increase in the fluorescence lifetime and relative intensity takes place upon heating the solid MOF from cryogenic to ambient temperatures. The origin of these unusual photoluminescence properties is attributed to twisted linker conformation, intramolecular hindrance, and framework rigidity.

  1. Maximizing the ExoEarth candidate yield from a future direct imaging mission

    SciTech Connect (OSTI)

    Stark, Christopher C.; Roberge, Aki; Mandell, Avi; Robinson, Tyler D.

    2014-11-10

    ExoEarth yield is a critical science metric for future exoplanet imaging missions. Here we estimate exoEarth candidate yield using single visit completeness for a variety of mission design and astrophysical parameters. We review the methods used in previous yield calculations and show that the method choice can significantly impact yield estimates as well as how the yield responds to mission parameters. We introduce a method, called Altruistic Yield Optimization, that optimizes the target list and exposure times to maximize mission yield, adapts maximally to changes in mission parameters, and increases exoEarth candidate yield by up to 100% compared to previous methods. We use Altruistic Yield Optimization to estimate exoEarth candidate yield for a large suite of mission and astrophysical parameters using single visit completeness. We find that exoEarth candidate yield is most sensitive to telescope diameter, followed by coronagraph inner working angle, followed by coronagraph contrast, and finally coronagraph contrast noise floor. We find a surprisingly weak dependence of exoEarth candidate yield on exozodi level. Additionally, we provide a quantitative approach to defining a yield goal for future exoEarth-imaging missions.

  2. Prospects for high-gain, high yield National Ignition Facility targets driven by 2(omega) (green) light

    SciTech Connect (OSTI)

    Suter, L J; Glenzer, S; Haan, S; Hammel, B; Manes, K; Meezan, N; Moody, J; Spaeth, M; Divol, L; Oades, K; Stevenson, M

    2003-12-16

    The National Ignition Facility (NIF), operating at green (2{omega}) light, has the potential to drive ignition targets with significantly more energy than the 1.8 MJ it will produce with its baseline, blue (3{omega}) operations. This results in a greatly increased 'target design space', providing a number of exciting opportunities for fusion research. These include the prospect of ignition experiments with capsules absorbing energies in the vicinity of 1 MJ. This significant increase in capsule absorbed energy over the original designs at {approx}150 kJ could allow high-gain, high yield experiments on NIF. This paper reports the progress made exploring 2{omega} for NIF ignition, including potential 2{omega} laser performance, 2{omega} ignition target designs and 2{omega} Laser Plasma Interaction (LPI) studies.

  3. Measurement of neutron spectra generated from bombardment of 4 to 24 MeV protons on a thick {sup 9}Be target and estimation of neutron yields

    SciTech Connect (OSTI)

    Paul, Sabyasachi; Sahoo, G. S.; Tripathy, S. P. E-mail: tripathy@barc.gov.in; Sunil, C.; Bandyopadhyay, T.; Sharma, S. C.; Ramjilal,; Ninawe, N. G.; Gupta, A. K.

    2014-06-15

    A systematic study on the measurement of neutron spectra emitted from the interaction of protons of various energies with a thick beryllium target has been carried out. The measurements were carried out in the forward direction (at 0 with respect to the direction of protons) using CR-39 detectors. The doses were estimated using the in-house image analyzing program autoTRAK-n, which works on the principle of luminosity variation in and around the track boundaries. A total of six different proton energies starting from 4 MeV to 24 MeV with an energy gap of 4 MeV were chosen for the study of the neutron yields and the estimation of doses. Nearly, 92% of the recoil tracks developed after chemical etching were circular in nature, but the size distributions of the recoil tracks were not found to be linearly dependent on the projectile energy. The neutron yield and dose values were found to be increasing linearly with increasing projectile energies. The response of CR-39 detector was also investigated at different beam currents at two different proton energies. A linear increase of neutron yield with beam current was observed.

  4. High-Yield Synthesis of Stoichiometric Boron Nitride Nanostructures

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Nocua, José E.; Piazza, Fabrice; Weiner, Brad R.; Morell, Gerardo

    2009-01-01

    Boron nimore » tride (BN) nanostructures are structural analogues of carbon nanostructures but have completely different bonding character and structural defects. They are chemically inert, electrically insulating, and potentially important in mechanical applications that include the strengthening of light structural materials. These applications require the reliable production of bulk amounts of pure BN nanostructures in order to be able to reinforce large quantities of structural materials, hence the need for the development of high-yield synthesis methods of pure BN nanostructures. Using borazine ( B 3 N 3 H 6 ) as chemical precursor and the hot-filament chemical vapor deposition (HFCVD) technique, pure BN nanostructures with cross-sectional sizes ranging between 20 and 50 nm were obtained, including nanoparticles and nanofibers. Their crystalline structure was characterized by (XRD), their morphology and nanostructure was examined by (SEM) and (TEM), while their chemical composition was studied by (EDS), (FTIR), (EELS), and (XPS). Taken altogether, the results indicate that all the material obtained is stoichiometric nanostructured BN with hexagonal and rhombohedral crystalline structure.« less

  5. The Start Of Ebullition In Quiescent, Yield-Stress Fluids

    SciTech Connect (OSTI)

    Reed, G. R.; Sherwood, David J.; Saez, A. Eduardo

    2012-08-30

    Non-Newtonian rheology is typical for the high-level radioactive waste (HLW) slurries processed in the Hanford Tank Waste Treatment and Immobilization Plant (WTP). Hydrogen and other flammable gases are generated in the aqueous phase by radiolytic and chemical reactions. HLW slurries have a capacity for retaining gas characterized by the shear strength holding the bubbles still. The sizes and degassing characteristics of flammable gas bubbles in the HLW slurries expected to be processed by the WTP are important considerations for designing equipment and operating procedures. Slurries become increasingly susceptible to degassing as the bubble concentration increases. This susceptibility and the process of ebullitive bubble enlargement are described here. When disturbed, the fluid undergoes localized flow around neighboring bubbles which are dragged together and coalesce, producing an enlarged bubble. For the conditions considered in this work, bubble size increase is enough to displace the weight required to overcome the fluid shear strength and yield the surroundings. The buoyant bubble ascends and accumulates others within a zone of influence, enlarging by a few orders of magnitude. This process describes how the first bubbles appear on the surface of a 7 Pa shear strength fluid a few seconds after being jarred.

  6. Energy 101: Energy Efficient Commercial Buildings | Department of Energy

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

    Energy Efficient Commercial Buildings Energy 101: Energy Efficient Commercial Buildings

  7. Sandia Energy Transportation Energy

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

    c-liquids-create-more-sustainable-processesfeed 0 DOE Joint BioEnergy Institute Joins Elite '100500 Club' http:energy.sandia.govdoe-joint-bioenergy-institute-joins-elite-1005...

  8. Sandia Energy Renewable Energy

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

    c-liquids-create-more-sustainable-processesfeed 0 DOE Joint BioEnergy Institute Joins Elite '100500 Club' http:energy.sandia.govdoe-joint-bioenergy-institute-joins-elite-1005...

  9. Solar Energy

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

    Energy - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Energy Defense Waste Management Programs Advanced Nuclear Energy

  10. Energy Research

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

    Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Energy Defense Waste Management Programs Advanced Nuclear Energy Nuclear Energy

  11. ocean energy

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

    energy - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Energy Defense Waste Management Programs Advanced Nuclear Energy

  12. Inertial energy storage device

    DOE Patents [OSTI]

    Knight, Jr., Charles E.; Kelly, James J.; Pollard, Roy E.

    1978-01-01

    The inertial energy storage device of the present invention comprises a composite ring formed of circumferentially wound resin-impregnated filament material, a flanged hollow metal hub concentrically disposed in the ring, and a plurality of discrete filament bandsets coupling the hub to the ring. Each bandset is formed of a pair of parallel bands affixed to the hub in a spaced apart relationship with the axis of rotation of the hub being disposed between the bands and with each band being in the configuration of a hoop extending about the ring along a chordal plane thereof. The bandsets are disposed in an angular relationship with one another so as to encircle the ring at spaced-apart circumferential locations while being disposed in an overlapping relationship on the flanges of the hub. The energy storage device of the present invention has the capability of substantial energy storage due to the relationship of the filament bands to the ring and the flanged hub.

  13. Final Report - Conservation & Renewable Energy Potential Study For Smith River Rancheria

    SciTech Connect (OSTI)

    Greg Retzlaff

    2007-07-01

    In January 2006 the Smith River Rancheria (SRR), located in Smith River, California, contracted with the team of Strategic Energy Solutions (SES) and Evergreen NRG to conduct a study for the community. The objective of the study was to identify renewable generation opportunities that would facilitate Rancheria energy independence through SRR owned and operated power projects. These generation facilities were to be located either on or near the reservation. Specifically, the Rancheria was interested in the viability of generating electric power using biomass and wind fuel resources. Initial research identified that a very small portion of the community's energy could be offset by renewable energy generation due to the low solar resource in this area, and the lack of significant wind or biomass resources on or near reservation land. Some larger projects were identified which offered little or no benefit to the Rancheria. As a result, the scope of this study was changed in October 2006 to focus on energy efficiency opportunities for key reservation facilities, with a continued analysis of smaller renewable energy opportunities within reservation boundaries. The consulting team initially performed a resource analysis for biomass and solar generation opportunities in the region of the Rancheria. It was quickly concluded that none of these options would yield renewable power for the Rancheria at costs competitive with current utility sources, and that any larger installations would require substantial funding that may not be available. Having made these conclusions early on, the study effort was redirected and the team investigated each of the major Rancheria buildings to look for solar, wind and conservation opportunities. The buildings were audited for energy use and the roof areas were examined for exposure of solar radiation. Wind resources were also investigated to determine if smaller wind turbines would offer power generation at a reasonable cost.

  14. Fusion-neutron-yield, activation measurements at the Z accelerator: Design, analysis, and sensitivity

    SciTech Connect (OSTI)

    Hahn, K. D. Ruiz, C. L.; Fehl, D. L.; Chandler, G. A.; Knapp, P. F.; Smelser, R. M.; Torres, J. A.; Cooper, G. W.; Nelson, A. J.; Leeper, R. J.

    2014-04-15

    We present a general methodology to determine the diagnostic sensitivity that is directly applicable to neutron-activation diagnostics fielded on a wide variety of neutron-producing experiments, which include inertial-confinement fusion (ICF), dense plasma focus, and ion beam-driven concepts. This approach includes a combination of several effects: (1) non-isotropic neutron emission; (2) the 1/r{sup 2} decrease in neutron fluence in the activation material; (3) the spatially distributed neutron scattering, attenuation, and energy losses due to the fielding environment and activation material itself; and (4) temporally varying neutron emission. As an example, we describe the copper-activation diagnostic used to measure secondary deuterium-tritium fusion-neutron yields on ICF experiments conducted on the pulsed-power Z Accelerator at Sandia National Laboratories. Using this methodology along with results from absolute calibrations and Monte Carlo simulations, we find that for the diagnostic configuration on Z, the diagnostic sensitivity is 0.037% ± 17% counts/neutron per cm{sup 2} and is ∼ 40% less sensitive than it would be in an ideal geometry due to neutron attenuation, scattering, and energy-loss effects.

  15. Cold War Films Yield New Effects-Data for U.S. Nuclear Weapons

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

    Cold War Films Yield New Effects National Security Science Latest Issue:April 2016 past issues All Issues submit Cold War Films Yield New Effects-Data for U.S. Nuclear Weapons ...

  16. ZeaChem Pilot Project: High-Yield Hybrid Cellulosic Ethanol Process...

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

    ZeaChem Pilot Project: High-Yield Hybrid Cellulosic Ethanol Process Using High-Impact Feedstock for Commercialization ZeaChem Pilot Project: High-Yield Hybrid Cellulosic Ethanol...

  17. Solar energy thermalization and storage device

    DOE Patents [OSTI]

    McClelland, J.F.

    A passive solar thermalization and thermal energy storage assembly which is visually transparent is described. The assembly consists of two substantial parallel, transparent wall members mounted in a rectangular support frame to form a liquid-tight chamber. A semitransparent thermalization plate is located in the chamber, substantially paralled to and about equidistant from the transparent wall members to thermalize solar radiation which is stored in a transparent thermal energy storage liquid which fills the chamber. A number of the devices, as modules, can be stacked together to construct a visually transparent, thermal storage wall for passive solar-heated buildings.

  18. Solar energy thermalization and storage device

    DOE Patents [OSTI]

    McClelland, John F.

    1981-09-01

    A passive solar thermalization and thermal energy storage assembly which is visually transparent. The assembly consists of two substantial parallel, transparent wall members mounted in a rectangular support frame to form a liquid-tight chamber. A semitransparent thermalization plate is located in the chamber, substantially paralled to and about equidistant from the transparent wall members to thermalize solar radiation which is stored in a transparent thermal energy storage liquid which fills the chamber. A number of the devices, as modules, can be stacked together to construct a visually transparent, thermal storage wall for passive solar-heated buildings.

  19. Energy 101: Geothermal Energy | Department of Energy

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

    Geothermal Energy Energy 101: Geothermal Energy Addthis Description See how we can generate clean, renewable energy from hot water sources deep beneath the Earth's surface. The video highlights the basic principles at work in geothermal energy production, and illustrates three different ways the Earth's heat can be converted into electricity. Topic Geothermal Text Version Below is the text version for the Energy 101: Geothermal Energy video. The words "Energy 101: Geothermal Energy"

  20. Energy Planning

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

    Energy Planning Agenda * What is energy planning? * The process * The plan * Strategic Energy Planning (SEP) Workbook * Other resources 2 What is Energy Planning? * Brings desired ...

  1. A compact proton spectrometer for measurement of the absolute DD proton spectrum from which yield and pR are determined in thin-shell inertial-confinement-fusion implosions

    SciTech Connect (OSTI)

    Rosenberg, M. J. [Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center; Zylstra, A. B. [Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center; Frenje, J. A. [Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center; Rinderknecht, H. G. [Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center; Gatu Johnson, M. [Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center; Waugh, C. J. [Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center; Seguin, F. H. [Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center; Sio, H. [Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center; Sinenian, N. [Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center; Li, C. K. [Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center; Petrasso, R. D. [Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States). Plasma Science and Fusion Center; Glebov, V. Yu. [Univ. of Rochester, NY (United States). Lab. for Laser Energetics; Hohenberger, M. [Univ. of Rochester, NY (United States). Lab. for Laser Energetics; Stoeckl, C. [Univ. of Rochester, NY (United States). Lab. for Laser Energetics; Sangster, T. C. [Univ. of Rochester, NY (United States). Lab. for Laser Energetics; Yeamans, C. B. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); LePape, S. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Mackinnon, A. J. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Bionta, R. M. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Talison, B. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Casey, D. T. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Landen, O. L. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Moran, M. J. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Zacharias, R. A. [Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Kilkenny, J. D. [General Atomics, San Diego, CA (United States); Nikroo, A. [General Atomics, San Diego, CA (United States)

    2014-10-10

    A compact, step range filter proton spectrometer has been developed for the measurement of the absolute DD proton spectrum, from which yield and areal density (?R) are inferred for deuterium-filled thin-shell inertial confinement fusion implosions. This spectrometer, which is based on tantalum step-range filters, is sensitive to protons in the energy range 1-9 MeV and can be used to measure proton spectra at mean energies of ~1-3 MeV. It has been developed and implemented using a linear accelerator and applied to experiments at the OMEGA laser facility and the National Ignition Facility (NIF). Modeling of the proton slowing in the filters is necessary to construct the spectrum, and the yield and energy uncertainties are <10% in yield and 120 keV, respectively. This spectrometer can be used for in situ calibration of DD-neutron yield diagnostics at the NIF

  2. A compact proton spectrometer for measurement of the absolute DD proton spectrum from which yield and pR are determined in thin-shell inertial-confinement-fusion implosions

    SciTech Connect (OSTI)

    Rosenberg, M. J.; Zylstra, A. B.; Frenje, J. A.; Rinderknecht, H. G.; Gatu Johnson, M.; Waugh, C. J.; Seguin, F. H.; Sio, H.; Sinenian, N.; Li, C. K.; Petrasso, R. D.; Glebov, V. Yu.; Hohenberger, M.; Stoeckl, C.; Sangster, T. C.; Yeamans, C. B.; LePape, S.; Mackinnon, A. J.; Bionta, R. M.; Talison, B.; Casey, D. T.; Landen, O. L.; Moran, M. J.; Zacharias, R. A.; Kilkenny, J. D.; Nikroo, A.

    2014-10-10

    A compact, step range filter proton spectrometer has been developed for the measurement of the absolute DD proton spectrum, from which yield and areal density (ρR) are inferred for deuterium-filled thin-shell inertial confinement fusion implosions. This spectrometer, which is based on tantalum step-range filters, is sensitive to protons in the energy range 1-9 MeV and can be used to measure proton spectra at mean energies of ~1-3 MeV. It has been developed and implemented using a linear accelerator and applied to experiments at the OMEGA laser facility and the National Ignition Facility (NIF). Modeling of the proton slowing in the filters is necessary to construct the spectrum, and the yield and energy uncertainties are ±<10% in yield and ±120 keV, respectively. This spectrometer can be used for in situ calibration of DD-neutron yield diagnostics at the NIF

  3. Energy News | Department of Energy

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

    2015 Energy Department Announces Six Clean Energy Projects through Partnership with Israel U.S. Department of Energy and Israel's Ministry of National Infrastructure, Energy and...

  4. Leonardo Energy | Open Energy Information

    Open Energy Info (EERE)

    Area: Energy Efficiency, Renewable Energy, Transportation Resource Type: Webinar, Training materials Website: www.leonardo-energy.org References: Leonardo Energy 1 "Leonardo...

  5. Energy Insight | Open Energy Information

    Open Energy Info (EERE)

    Energy Insight Jump to: navigation, search Tool Summary LAUNCH TOOL Name: Energy Insight AgencyCompany Organization: Tendril Connect Sector: Energy Focus Area: Energy Efficiency...

  6. Conexia Energy | Open Energy Information

    Open Energy Info (EERE)

    Conexia Energy Jump to: navigation, search Name: Conexia Energy Place: Aix-en-Provence, France Zip: 13857 Sector: Renewable Energy Product: French renewable energy consulting and...

  7. Raz Energy | Open Energy Information

    Open Energy Info (EERE)

    Energy Jump to: navigation, search Name: Raz Energy Place: Carolles, France Zip: 50740 Sector: Renewable Energy Product: Carolles-based renewable energy consultancy and project...

  8. Solar Energy | Department of Energy

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

    Energy Resource Library Solar Energy Solar Energy Below are resources for Tribes on solar energy technologies. A Guide to Community Solar: Utility, Private, and Nonprofit ...

  9. Also Energy | Open Energy Information

    Open Energy Info (EERE)

    Also Energy Jump to: navigation, search Logo: Also Energy Name: Also Energy Address: PO Box 17877 Place: Boulder, Colorado Zip: 80308 Region: Rockies Area Product: Renewable Energy...

  10. Energy Efficiency | Department of Energy

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

    Energy Efficiency Energy Efficiency Below are resources for Tribes on energy efficiency. ... Source: Northwest SEED. Home and Building Technologies Basics Learn about energy ...

  11. Nature Energie | Open Energy Information

    Open Energy Info (EERE)

    Nature Energie Jump to: navigation, search Name: Nature Energie Place: France Sector: Solar, Wind energy Product: French developer of wind and solar energy projects. References:...

  12. Simple Energy | Open Energy Information

    Open Energy Info (EERE)

    Summary LAUNCH TOOL Name: Simple Energy AgencyCompany Organization: Simple Energy Sector: Energy Focus Area: Energy Efficiency Resource Type: Softwaremodeling tools User...

  13. EVZA Energy | Open Energy Information

    Open Energy Info (EERE)

    Energy Jump to: navigation, search Name: EVZA Energy Place: Germany Sector: Renewable Energy Product: Waste disposal comapany involved with renewable energy in the form of...

  14. Solgal Energy | Open Energy Information

    Open Energy Info (EERE)

    Energy Jump to: navigation, search Logo: Solgal Energy Name: Solgal Energy Address: Israel Place: Alon Hagalil Zip: 17920 Product: Renewable energy solutions Year Founded: 2008...

  15. JMB Energie | Open Energy Information

    Open Energy Info (EERE)

    Jump to: navigation, search Name: JMB Energie Place: Marseilles, France Sector: Solar, Wind energy Product: JMB Energie is producer of green energy primarily through the...

  16. Land Energy | Open Energy Information

    Open Energy Info (EERE)

    Energy Jump to: navigation, search Name: Land Energy Place: North Yorkshire, United Kingdom Zip: YO62 5DQ Sector: Biomass, Renewable Energy Product: A renewable-energy company...

  17. Energy Research

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

    Education | Department of Energy Energy Literacy: Essential Principles and Fundamental Concepts for Energy Education Energy Literacy: Essential Principles and Fundamental Concepts for Energy Education Energy Literacy: Essential Principles and Fundamental Concepts for Energy Education News and Updates Check out our new Energy Literacy video series! The Energy Literacy Framework is also available in Spanish: Conocimiento de Energía. What is Energy Literacy? Energy Literacy is an understanding

  18. Wind Energy

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

    2 - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Energy Defense Waste Management Programs Advanced Nuclear Energy Nuclear

  19. Wind Energy

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

    3 - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Energy Defense Waste Management Programs Advanced Nuclear Energy Nuclear

  20. Energy Efficiency

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

    2 - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Energy Defense Waste Management Programs Advanced Nuclear Energy Nuclear

  1. Energy Efficiency

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

    3 - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Energy Defense Waste Management Programs Advanced Nuclear Energy Nuclear

  2. Energy Efficiency

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

    4 - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Energy Defense Waste Management Programs Advanced Nuclear Energy Nuclear

  3. Energy Efficiency

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

    5 - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Energy Defense Waste Management Programs Advanced Nuclear Energy Nuclear

  4. Energy Research

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

    5 - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Energy Defense Waste Management Programs Advanced Nuclear Energy Nuclear

  5. Energy Surety

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

    - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Energy Defense Waste Management Programs Advanced Nuclear Energy Nuclear

  6. Renewable Energy

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

    2 - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future Stationary Power Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 Geothermal Natural Gas Safety, Security & Resilience of the Energy Infrastructure Energy Storage Nuclear Power & Engineering Grid Modernization Battery Testing Nuclear Energy Defense Waste Management Programs Advanced Nuclear Energy Nuclear

  7. Cumulative fission yields of short-lived isotopes under natural-abundance-boron-carbide-moderated neutron spectrum

    SciTech Connect (OSTI)

    Finn, Erin C.; Metz, Lori A.; Greenwood, Lawrence R.; Pierson, Bruce; Wittman, Richard S.; Friese, Judah I.; Kephart, Rosara F.

    2015-04-09

    The availability of gamma spectroscopy data on samples containing mixed fission products at short times after irradiation is limited. Due to this limitation, data interpretation methods for gamma spectra of mixed fission product samples, where the individual fission products have not been chemically isolated from interferences, are not well-developed. The limitation is particularly pronounced for fast pooled neutron spectra because of the lack of available fast reactors in the United States. Samples containing the actinide isotopes 233, 235, 238U, 237Np, and 239Pu individually were subjected to a 2$ pulse in the Washington State University 1 MW TRIGA reactor. To achieve a fission-energy neutron spectrum, the spectrum was tailored using a natural abundance boron carbide capsule to absorb neutrons in the thermal and epithermal region of the spectrum. Our tailored neutron spectrum is unique to the WSU reactor facility, consisting of a soft fission spectrum that contains some measurable flux in the resonance region. This results in a neutron spectrum at greater than 0.1 keV with an average energy of 70 keV, similar to fast reactor spectra and approaching that of 235U fission. Unique fission product gamma spectra were collected from 4 minutes to 1 week after fission using single-crystal high purity germanium detectors. Cumulative fission product yields measured in the current work generally agree with published fast pooled fission product yield values from ENDF/B-VII, though a bias was noted for 239Pu. The present work contributes to the compilation of energy-resolved fission product yield nuclear data for nuclear forensic purposes.

  8. Application of fall-line mix models to understand degraded yield

    SciTech Connect (OSTI)

    Welser-Sherrill, L; Cooley, J H; Haynes, D A; Wilson, D C; Sherrill, M E; Mancini, R C; Tommasini, R

    2008-02-28

    Mixing between fuel and shell material is an important topic in the inertial confinement fusion community, and is commonly accepted as the primary mechanism for neutron yield degradation. Typically, radiation hydrodynamic simulations that lack mixing (clean simulations) tend to considerably overestimate the neutron yield. We present here a series of yield calculations based on a variety of fall-line inspired mix models. The results are compared to a series of OMEGA experiments which provide total neutron yields and time-dependent yield rates.

  9. Light-Material Interactions in Energy Conversion - Energy Frontier Research

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

    Center (LMI-EFRC) 2: Solar Spectrum Control and Conversion RG Leader: John Rogers Affiliated PIs: Paul Alivisatos, Harry Atwater, Paul Braun, Mark Brongersma, Jennifer Dionne, Shanhui Fan, Ralph Nuzzo, Eli Yablonovitch, and Xiang Zhang Downshifting luminescent concentrator with micro solar cells (J. Rogers & R. Nuzzo, UIUC) The most substantial near-term opportunity for increase in solar energy conversion efficiency is via exploitation of the full solar spectrum. As first discussed by

  10. Duke Energy

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

    Duke Energy - U.S. Operations 55 % 38 % Franchised Electric & Gas Duke Energy Renewables 2

  11. Separated-orbit bisected energy-recovered linear accelerator

    DOE Patents [OSTI]

    Douglas, David R.

    2015-09-01

    A separated-orbit bisected energy-recovered linear accelerator apparatus and method. The accelerator includes a first linac, a second linac, and a plurality of arcs of differing path lengths, including a plurality of up arcs, a plurality of downgoing arcs, and a full energy arc providing a path independent of the up arcs and downgoing arcs. The up arcs have a path length that is substantially a multiple of the RF wavelength and the full energy arc includes a path length that is substantially an odd half-integer multiple of the RF wavelength. Operation of the accelerator includes accelerating the beam utilizing the linacs and up arcs until the beam is at full energy, at full energy executing a full recirculation to the second linac using a path length that is substantially an odd half-integer of the RF wavelength, and then decelerating the beam using the linacs and downgoing arcs.

  12. Experimental search for the radiative capture reaction d + d {yields} {sup 4}He + {gamma} from the dd{mu} muonic molecule state J = 1

    SciTech Connect (OSTI)

    Baluev, V. V.; Bogdanova, L. N.; Bom, V. R.; Demin, D. L.; Eijk, C. W. E. van; Filchenkov, V. V.; Grafov, N. N.; Grishechkin, S. K.; Gritsaj, K. I.; Konin, A. D.; Mikhailyukov, K. L.; Rudenko, A. I.; Vinogradov, Yu. I.; Volnykh, V. P.; Yukhimchuk, A. A.; Yukhimchuk, S. A.

    2011-07-15

    A search for the muon-catalyzed fusion reaction d + d {yields} {sup 4}He + {gamma} in the dd{mu} muonic molecule was performed using the experimental installation TRITON with BGO detectors for {gamma}-quanta. A high-pressure target filled with deuterium was exposed to the negative muon beam of the JINR Phasotron to detect {gamma}-quanta with the energy 23.8 MeV. An experimental estimation for the yield of radiative deuteron capture from the dd{mu} state J = 1 was obtained at the level of {eta}{sub {gamma}} {<=} 8 Multiplication-Sign 10{sup -7} per fusion.

  13. Energy Storage

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

    Sources Energy Sources Renewable Energy Renewable Energy Learn more about energy from solar, wind, water, geothermal and biomass. Read more Nuclear Nuclear Learn more about how we use nuclear energy. Read more Electricity Electricity Learn more about how we use electricity as an energy source. Read more Fossil Fossil Learn more about our fossil energy sources: coal, oil and natural gas. Read more Primary energy sources take many forms, including nuclear energy, fossil energy -- like oil, coal

  14. Daylighting Basics | Department of Energy

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

    Lighting & Daylighting » Daylighting Basics Daylighting Basics August 16, 2013 - 11:24am Addthis Energy 101: Daylighting Basics This video explains how homeowners and businesses can use highly efficient, strategically placed windows to save money. Text Version Daylighting is the use of windows and skylights to bring sunlight into buildings. Daylighting in businesses and commercial buildings can result in substantial savings on electric bills, and not only provides a higher quality of light

  15. Short-Term Energy Outlook

    Gasoline and Diesel Fuel Update (EIA)

    and Summer Fuels Outlook April 2015 1 April 2015 Short-Term Energy and Summer Fuels Outlook (STEO) Highlights * On April 2, Iran and the five permanent members of the United Nations Security Council plus Germany (P5+1) reached a framework agreement that could result in the lifting of oil- related sanctions against Iran. Lifting sanctions could substantially change the STEO forecast for oil supply, demand, and prices by allowing a significantly increased volume of Iranian barrels to enter the

  16. Sandia Energy Energy Surety

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

    efforts-during-recent-houston-press-conferencefeed 0 Recent Sandia Secure, Scalable Microgrid Advanced Controls Research Accomplishments http:energy.sandia.gov...

  17. Sandia Energy Energy Assurance

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

    Sandian's Receive Hydrogen and Fuel Cell Program Achievement Award http:energy.sandia.govsandians-receive-hydrogen-and-fuel-cell-program-achievement-award-2 http:...

  18. Sandia Energy Wind Energy

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

    ss-voucher-pilot-opensfeed 0 Sandia Wake-Imaging System Successfully Deployed at Scaled Wind Farm Technology Facility http:energy.sandia.govsandia-wake-imaging-system-successf...

  19. Sandia Energy Nuclear Energy

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

    afety-expert-elected-to-national-academy-of-engineeringfeed 0 Sandia Teaches Nuclear Safety Course http:energy.sandia.govsandia-teaches-nuclear-safety-course http:...

  20. Solar energy collection system

    SciTech Connect (OSTI)

    Hummel, R.L.

    1982-04-06

    A solar energy collection system for a building is described. A solar energy collector is disposed at the exterior surface of the building and includes a solar energy absorbent body having a surface which is exposed to sunlight and from which solar energy can be transmitted as sensible heat. A panel which is transparent to sunlight is spaced from the said surface of the absorbent body so as to define therewith a passageway in which air contacts at least a substantial area of said surface so that air in said passageway absorbs heat transmitted from said surface when the collector is in use. The passageway has an inlet and an outlet and the absorbent body and panel are arranged with the outlet higher than the inlet so that heated air in the passageway tends to rise by convection towards the outlet. The building is provided with heating means including a circulation circuit for a heating fluid. Heat exchange means are coupled to said air passageway outlet of the solar energy collector for passage of heated air therethrough. The heat exchange means are also coupled to the circulation circuit of the building heating means and are arranged to permit heat transfer between said heated air and the heating fluid. A return air flow conduit is coupled between the heat exchange means and the inlet of the air passageway of the solar energy collector for returning heated air from the heat exchange means to the air passageway for recirculation.

  1. GRB 110709A, 111117A, AND 120107A: FAINT HIGH-ENERGY GAMMA-RAY PHOTON EMISSION FROM FERMI-LAT OBSERVATIONS AND DEMOGRAPHIC IMPLICATIONS

    SciTech Connect (OSTI)

    Zheng Weikang; Akerlof, Carl W.; McKay, Timothy A. [Department of Physics, University of Michigan, 450 Church Street, Ann Arbor, MI 48109 (United States); Pandey, Shashi B. [Aryabhatta Research Institute of Observational Sciences, Manora Peak, Nainital 263129 (India); Zhang Binbin [Department of Astronomy and Astrophysics, Pennsylvania State University, University Park, PA 16802 (United States); Zhang Bing [Department of Physics and Astronomy, University of Nevada, Las Vegas, NV 89154 (United States); Sakamoto, Takanori, E-mail: zwk@umich.edu [Center for Research and Exploration in Space Science and Technology (CRESST), NASA Goddard Space Flight Center, Greenbelt, MD 20771 (United States)

    2012-09-01

    Launched on 2008 June 11, the Large Area Telescope (LAT) instrument on board the Fermi Gamma-ray Space Telescope has provided a rare opportunity to study high-energy photon emission from gamma-ray bursts (GRBs). Although the majority of such events (27) have been identified by the Fermi-LAT Collaboration, four were uncovered by using more sensitive statistical techniques. In this paper, we continue our earlier work by finding three more GRBs associated with high-energy photon emission, GRB 110709A, 111117A, and 120107A. To systematize our matched filter approach, a pipeline has been developed to identify these objects in nearly real time. GRB 120107A is the first product of this analysis procedure. Despite the reduced threshold for identification, the number of GRB events has not increased significantly. This relative dearth of events with low photon number prompted a study of the apparent photon number distribution. We find an extremely good fit to a simple power law with an exponent of -1.8 {+-} 0.3 for the differential distribution. As might be expected, there is a substantial correlation between the number of lower energy photons detected by the Gamma-ray Burst Monitor (GBM) and the number observed by LAT. Thus, high-energy photon emission is associated with some but not all of the brighter GBM events. Deeper studies of the properties of the small population of high-energy emitting bursts may eventually yield a better understanding of these entire phenomena.

  2. Energy 101: Geothermal Energy

    ScienceCinema (OSTI)

    None

    2014-06-23

    See how we can generate clean, renewable energy from hot water sources deep beneath the Earth's surface. The video highlights the basic principles at work in geothermal energy production, and illustrates three different ways the Earth's heat can be converted into electricity.

  3. Energy 101: Geothermal Energy

    SciTech Connect (OSTI)

    2014-05-27

    See how we can generate clean, renewable energy from hot water sources deep beneath the Earth's surface. The video highlights the basic principles at work in geothermal energy production, and illustrates three different ways the Earth's heat can be converted into electricity.

  4. Energy 101 | Department of Energy

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

    Literacy » Energy 101 Energy 101 What is the Energy 101 Initiative? The Energy 101 Dialogue Series: Dialogue #1: Energy in the Classroom Webinar Slides Increasing opportunities for students learning about energy in the Nation's two-year and four-year colleges and universities The Energy 101 initiative is an effort to support energy education in the post-secondary setting to increase students' opportunities to enter the energy workforce, ensuring that the Nation excels in energy research and

  5. Energy Sources | Department of Energy

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

    Sources Energy Sources Renewable Energy Renewable Energy Learn more about energy from solar, wind, water, geothermal and biomass. Read more Nuclear Nuclear Learn more about how we use nuclear energy. Read more Electricity Electricity Learn more about how we use electricity as an energy source. Read more Fossil Fossil Learn more about our fossil energy sources: coal, oil and natural gas. Read more Primary energy sources take many forms, including nuclear energy, fossil energy -- like oil, coal

  6. Energy conservation from regenerative incineration

    SciTech Connect (OSTI)

    Pennington, R.L.

    1982-06-01

    The oil embargo in the winter of 1973 covered the nation with a serious energy crisis. Although the ''gas lines'' have subsided, sky-rocketing fuel costs and diminishing energy supplies linger on. Projected U.S. energy demands indicate normal energy requirements over a normal growth rate. However, when compared with the projected U.S. energy supplies, a very significant energy deficit may exist in the near future. Although coal and nuclear show substantial potential as energy sources, it is unlikely that they will fill the gap between energy demands and the gas and oil supplies. In view of the Three-Mile Island nuclear incident, and cutbacks in the state of Washington, it is doubtful that the 13% contribution to the energy supply in the part of nuclear power will ever materialize. Although coal supplies are very abundant, the development of coal technology will not meet the next decade's energy requirements as it is indicated by the fact that coal is supplying far less energy than forecasted by the government.

  7. Energy News | Department of Energy

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

    for Nuclear Research (CERN) signed today will pave the way for renewed collaboration in particle physics, promising to yield new insights into fundamental particles and the...

  8. Complete (O{sub 7},O{sub 8}) contribution to B{yields}X{sub s{gamma}} at O({alpha}{sub s}{sup 2})

    SciTech Connect (OSTI)

    Asatrian, H. M.; Ewerth, T.; Ferroglia, A.; Greub, C.; Ossola, G.

    2010-10-01

    We calculate the set of O({alpha}{sub s}{sup 2}) corrections to the branching ratio and to the photon energy spectrum of the decay process B{yields}X{sub s{gamma}} originating from the interference of diagrams involving the electromagnetic dipole operator O{sub 7} with diagrams involving the chromomagnetic dipole operator O{sub 8}. The corrections evaluated here are one of the elements needed to complete the calculations of the B{yields}X{sub s{gamma}} branching ratio at next-to-next-to-leading order in QCD. We conclude that this set of corrections does not change the central value of the standard model prediction for Br(B{yields}X{sub s{gamma}}) by more than 1%.

  9. Energy Storage

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

    SunShot Grand Challenge: Regional Test Centers Energy Storage Home/Tag:Energy Storage Energy-Storage-Procurement-Image Permalink Gallery Sandia National Laboratories Develops Guidance Document for Energy Storage Procurement Energy, Energy Storage, News Sandia National Laboratories Develops Guidance Document for Energy Storage Procurement Through a partnership with Clean Energy States Alliance (CESA) and Clean Energy Group, Sandia has created a procurement guideline that offers useful

  10. Energy Literacy

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

    Biomass 2014 Conference Energy Literacy Linda Silverman Education and Workforce Development Department of Energy July 30, 2014 2 | Energy Education and Workforce Development eere.energy.gov * Setting the Context: Global Energy Challenge * Energy Literacy Principles * Energy 101 * Possible Uses Agenda 3 | Energy Education and Workforce Development eere.energy.gov * Carbon neutral; * Diverse, homegrown supply options; * Sustainable use of natural resources; * Creates American jobs; * Accessible,

  11. Energy Literacy

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

    gov Energy Literacy I want to talk about building a sustainable energy future.... The United States is committed to taking action to meet the energy and climate challenge. Secretary Chu, December 6, 2010 Presenter: Matthew Inman Albert Einstein Distinguished Educator Fellow US Department of Energy, EERE-EEWD matthew.inman@ee.doe.gov 2 | Energy Education and Workforce Development eere.energy.gov Energy Literacy Energy Literacy Promote Energy Literacy The Department will actively participate in

  12. Energy Assurance

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

    Energy Analysis Energy Analysis Photo courtesy of Dennis Schroeder, NREL 24348 Photo courtesy of Dennis Schroeder, NREL 24348 Energy analysis informs EERE decision-making by delivering analytical products in four main areas: Data Resources, Market Intelligence, Energy Systems Analysis, and Portfolio Impacts Analysis. The Energy Analysis website is designed to help energy experts and policymakers access energy analysis resources related to renewable energy and energy efficiency. It contains

  13. City Of Milford Pump Optimization Project Yields $96,000 Net Present Value

    SciTech Connect (OSTI)

    2010-06-25

    Energy management led to the improvement of Mildford City's sewer stations, saving energy and resources.

  14. Effects of inter-nanocrystal distance on luminescence quantum yield in ensembles of Si nanocrystals

    SciTech Connect (OSTI)

    Valenta, J. Greben, M.; Gutsch, S.; Hiller, D.; Zacharias, M.

    2014-12-15

    The absolute photoluminescence (PL) quantum yield (QY) of multilayers of Silicon nanocrystals (SiNCs) separated by SiO{sub 2} barriers were thoroughly studied as function of the barrier thickness, excitation wavelength, and temperature. By mastering the plasma-enhanced chemical vapor deposition growth, we produce a series of samples with the same size-distribution of SiNCs but variable interlayer barrier distance. These samples enable us to clearly demonstrate that the increase of barrier thickness from ∼1 to larger than 2 nm induces doubling of the PL QY value, which corresponds to the change of number of close neighbors in the hcp structure. The temperature dependence of PL QY suggests that the PL QY changes are due to a thermally activated transport of excitation into non-radiative centers in dark NCs or in the matrix. We estimate that dark NCs represent about 68% of the ensemble of NCs. The PL QY excitation spectra show no significant changes upon changing the barrier thickness and no clear carrier multiplication effects. The dominant effect is the gradual decrease of the PL QY with increasing excitation photon energy.

  15. Energy Policy

    Broader source: Energy.gov [DOE]

    The Energy Department is focusing on an all-of-the-above energy policy, investing in all sources of American energy.

  16. wind energy

    National Nuclear Security Administration (NNSA)

    5%2A en Pantex to Become Wind Energy Research Center http:nnsa.energy.govfieldofficesnponpopressreleasespantex-become-wind-energy-research-center

  17. Energy Efficiency

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

    the full transcript of the Energy Efficiency video Learn More Cool School Challenge Money Saving Energy Efficiency Tips Alliance to Save Energy: Consumer Tips Bonneville...

  18. Energy Management

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

    Energy Management Utilize energy efficiency to improve your industrial customer's business performance without the cost of major capital improvements. Energy efficiency is not...

  19. Stellar yields of rotating first stars. I. Yields of weak supernovae and abundances of carbon-enhanced hyper-metal-poor stars

    SciTech Connect (OSTI)

    Takahashi, Koh; Umeda, Hideyuki [Department of Astronomy, The University of Tokyo, Bunkyo, Tokyo 113-0033 (Japan); Yoshida, Takashi, E-mail: ktakahashi@astron.s.u-tokyo.ac.jp [Yukawa Institute for Theoretical Physics, Kyoto University, Kitashirakawa-Oiwakecho, Sakyo-Ku, Kyoto 606-8502 (Japan)

    2014-10-10

    We perform a stellar evolution simulation of first stars and calculate stellar yields from the first supernovae. The initial masses are taken from 12 to 140 M {sub ?} to cover the whole range of core-collapse supernova progenitors, and stellar rotation is included, which results in efficient internal mixing. A weak explosion is assumed in supernova yield calculations, thus only outer distributed matter, which is not affected by the explosive nucleosynthesis, is ejected in the models. We show that the initial mass and the rotation affect the explosion yield. All the weak explosion models have abundances of [C/O] larger than unity. Stellar yields from massive progenitors of >40-60 M {sub ?} show enhancement of Mg and Si. Rotating models yield abundant Na and Al, and Ca is synthesized in nonrotating heavy massive models of >80 M {sub ?}. We fit the stellar yields to the three most iron-deficient stars and constrain the initial parameters of the mother progenitor stars. The abundance pattern in SMSS 03136708 is well explained by 50-80 M {sub ?} nonrotating models, rotating 30-40 M {sub ?} models well fit the abundance of HE 0107-5240, and both nonrotating and rotating 15-40 M {sub ?} models explain HE 1327-2326. The presented analysis will be applicable to other carbon-enhanced hyper-metal-poor stars observed in the future. The abundance analyses will give valuable information about the characteristics of the first stars.

  20. Role of the N*(1535) resonance and the {pi}{sup -}p{yields}KY amplitudes in the OZI forbidden {pi}N{yields}{phi}N reaction

    SciTech Connect (OSTI)

    Doering, M.; Oset, E.; Zou, B. S.

    2008-08-15

    We study the {pi}N{yields}{phi}N reaction close to the {phi}N threshold within the chiral unitary approach, by combining the {pi}{sup -}p{yields}K{sup +}{sigma}{sup -},{pi}{sup -}p{yields}K{sup 0}{sigma}{sup 0}, and {pi}{sup -}p{yields}K{sup 0}{lambda} amplitudes with the coupling of {phi} to the K components of the final states of these reactions via quantum loops. We obtain good agreement with experiment when the dominant {pi}{sup -}p{yields}K{sup 0}{lambda} amplitude is constrained with its experimental cross section. We also evaluate the coupling of N*(1535) to {phi}N and find a moderate coupling as a consequence of partial cancellation of the large KY components of N*(1535). We also show that the N*(1535) pole approximation is too small to reproduce the measured cross section for the {pi}{sup -}N{yields}{phi}N reaction.

  1. {upsilon}(1S){yields}{gamma}f{sub 2}(1270) decay

    SciTech Connect (OSTI)

    Li Bingan

    2009-12-01

    Decay {upsilon}(1S){yields}{gamma}f{sub 2}(1270) is studied by an approach in which the tensor meson, f{sub 2}(1270), is strongly coupled to gluons. Besides the strong suppression of the amplitude {upsilon}(1S){yields}{gamma}gg, gg{yields}f{sub 2} by the mass of the b-quark, d-wave dominance in {upsilon}(1S){yields}{gamma}f{sub 2}(1270) is revealed from this approach, which provides a large enhancement. The combination of these two factors leads to larger B({upsilon}(1S){yields}{gamma}f{sub 2}(1270)). The decay rate of {upsilon}(1S){yields}{gamma}f{sub 2}(1270) and the ratios of the helicity amplitudes are obtained and they are in agreement with the data.

  2. Lepton flavor violating Higgs bosons and {tau}{yields}{mu}{gamma}

    SciTech Connect (OSTI)

    Davidson, Sacha; Grenier, Gerald

    2010-05-01

    We update phenomenological constraints on a two Higgs doublet model with lepton flavor nonconserving Yukawa couplings. We review that tan{beta} is ambiguous in such 'type III' models, and define it from the {tau} Yukawa coupling. The neutral scalars {phi} could be searched for at hadron colliders in {phi}{yields}{tau}{mu} and are constrained by the rare decay {tau}{yields}{mu}{gamma}. The Feynman diagrams for the collider process, with Higgs production via gluon fusion, are similar to the two-loop ''Barr-Zee'' diagrams, which contribute to {tau}{yields}{mu}{gamma}. Some ''tuning'' is required to obtain a collider cross section of order the standard model expectation for {sigma}(gg{yields}h{sub SM{yields}{tau}}{sup +{tau}-}), while agreeing with the current bound from {tau}{yields}{mu}{gamma}.

  3. Sample preparation method for glass welding by ultrashort laser pulses yields higher seam strength

    SciTech Connect (OSTI)

    Cvecek, K.; Miyamoto, I.; Strauss, J.; Wolf, M.; Frick, T.; Schmidt, M.

    2011-05-01

    Glass welding by ultrashort laser pulses allows joining without the need of an absorber or a preheating and postheating process. However, cracks generated during the welding process substantially impair the joining strength of the welding seams. In this paper a sample preparation method is described that prevents the formation of cracks. The measured joining strength of samples prepared by this method is substantially higher than previously reported values.

  4. Ride and Drive Webinar | Department of Energy

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

    Reynolds Creek Hydroelectric Project Project Status October 28, 2010 By : Alvin Edenshaw, President Haida Corporation and Haida Energy, Inc. Haida Corporation  Located in Hydaburg on Prince of Wales Island in SE Alaska  Hydaburg population = 350 people (called Kaigani Haida)  Hydaburg is largest Haida Village in Alaska  Subsistence and Commercial Fishing Lifestyle  Substantial Timber Holdings  Hydaburg has Excellent School System October 28, 2009 2 Haida Energy, Inc.  Joint

  5. Energy Analysis | Department of Energy

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

    Services » Energy Analysis Energy Analysis Photo courtesy of Dennis Schroeder, NREL 24348 Photo courtesy of Dennis Schroeder, NREL 24348 Energy analysis informs EERE decision-making by delivering analytical products in four main areas: Data Resources, Market Intelligence, Energy Systems Analysis, and Portfolio Impacts Analysis. The Energy Analysis website is designed to help energy experts and policymakers access energy analysis resources related to renewable energy and energy efficiency. It

  6. Solar energy receiver

    DOE Patents [OSTI]

    Schwartz, Jacob

    1978-01-01

    An improved long-life design for solar energy receivers provides for greatly reduced thermally induced stress and permits the utilization of less expensive heat exchanger materials while maintaining receiver efficiencies in excess of 85% without undue expenditure of energy to circulate the working fluid. In one embodiment, the flow index for the receiver is first set as close as practical to a value such that the Graetz number yields the optimal heat transfer coefficient per unit of pumping energy, in this case, 6. The convective index for the receiver is then set as closely as practical to two times the flow index so as to obtain optimal efficiency per unit mass of material.

  7. High-Yield Hybrid Cellulosic Ethanol Process Using High-Impact...

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

    Peer Review High-Yield Hybrid Cellulosic Ethanol Process Using High- Impact Feedstock ... & Operations: ZeaChem Inc., Pacific Ethanol Management Services Timeline Barriers ...

  8. Energy Sources: Renewable Energy

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

    Why Hydrogen? * Fossil fuels release CO 2 , SO X , NO X SO X , NO X * Declining reserves, national security security GM Hydrogen Energy Hydrogen- the use of Hydrogen gas in...

  9. Sandia Energy Energy

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

    Investigations on Anti-biofouling Zwitterionic Coatings for MHK Is Now in Press http:energy.sandia.govinvestigations-on-anti-biofouling-zwitterionic-coatings-for-mhk-is-now-in-p...

  10. Vadxx Energy | Open Energy Information

    Open Energy Info (EERE)

    Energy, Services Product: Energy provider: power production;Energy provider: wholesale; Research and development Phone Number: 440-591-8994 Website: www.vadxx.com Coordinates:...

  11. Refex Energy | Open Energy Information

    Open Energy Info (EERE)

    Refex Energy Jump to: navigation, search Name: Refex Energy Place: Tamil Nadu, India Zip: 600017 Sector: Wind energy Product: Part of the refrigeration major Refex Group, plans to...

  12. Wind energy | Open Energy Information

    Open Energy Info (EERE)

    help industry reduce the cost of energy so that wind can compete with traditional energy sources, providing a clean, renewable alternative for our nation's energy needs. Worldwide...

  13. Pfister Energy | Open Energy Information

    Open Energy Info (EERE)

    Product: Pfister Energy is committed to applying the latest technologies in renewable energy so that you reap the benefits of a complete energy-efficient solution. Coordinates:...

  14. Energy Enterprises | Open Energy Information

    Open Energy Info (EERE)

    Energy Enterprises Place: Mays Landing, New Jersey Zip: 8330 Sector: Solar Product: Energy Enterprises is a licensed dealer, installer, and servicer of solar energy systems,...

  15. Universal Energy | Open Energy Information

    Open Energy Info (EERE)

    Energy Jump to: navigation, search Name: Universal Energy Place: Nanjing, Jiangsu Province, China Sector: Solar Product: Universal Energy is a PV module and solar hot water systems...

  16. Saving Energy | Department of Energy

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

    Saving Energy Saving Energy Saving Energy Walmart Partnership Brings LEDs to Parking Lots Walmart Partnership Brings LEDs to Parking Lots Read more Refrigerator Standards Save ...

  17. Energy Eye | Open Energy Information

    Open Energy Info (EERE)

    Energy Efficiency Product: Manufactures wireless devices that monitor room occupancy for energy conservation Website: www.energy-eye.com Coordinates: 32.899939, -117.188214...

  18. Plymouth Energy | Open Energy Information

    Open Energy Info (EERE)

    New Hampshire Zip: 3245 Sector: Renewable Energy Product: A local initiative to encourage energy conservation and promote the use of renewable energies. Coordinates: 43.725544,...

  19. Hiolle Energies | Open Energy Information

    Open Energy Info (EERE)

    Hiolle Energies Jump to: navigation, search Name: Hiolle Energies Place: France Product: French PV system integrator. References: Hiolle Energies1 This article is a stub. You can...

  20. Positive Energy | Open Energy Information

    Open Energy Info (EERE)

    Positive Energy Name: Positive Energy Address: 3201 Calle Marie Place: Santa Fe, New Mexico Zip: 87507 Sector: Solar Product: Renewable energy products and services Phone Number:...

  1. Veolia Energy | Open Energy Information

    Open Energy Info (EERE)

    Energy 1 Veolia Energy is a company located in Oklahoma City, with offices in Cambridge (Massachusetts), Houston, Boston, and New York City. Veolia Energy is a large...

  2. Zapotec Energy | Open Energy Information

    Open Energy Info (EERE)

    Zapotec Energy Jump to: navigation, search Name: Zapotec Energy Place: Cambridge, MA Website: www.zapotecenergy.com References: Zapotec Energy1 Information About Partnership with...

  3. Tigo Energy | Open Energy Information

    Open Energy Info (EERE)

    Tigo Energy Jump to: navigation, search Name: Tigo Energy Place: Los Gatos, California Zip: 95032 Sector: Solar Product: Tigo Energy builds hardware and software intelligence into...

  4. Prudent Energy | Open Energy Information

    Open Energy Info (EERE)

    ss":"","icon":"","group":"","inlineLabel":"","visitedicon":"" Hide Map References: VRB Energy Storage System1 Prudent Energy Inc. (Prudent Energy), with offices in Vancouver,...

  5. Bourne Energy | Open Energy Information

    Open Energy Info (EERE)

    Energy Jump to: navigation, search Logo: Bourne Energy Name: Bourne Energy Address: Box 2761 Place: Malibu, California Zip: 90265 Region: Southern CA Area Sector: Marine and...

  6. Wind Energy | Department of Energy

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

    Wind Energy Wind Energy Below are resources for Tribes on wind energy technologies. 2012 Market Report on Wind Technologies in Distributed Applications Includes a breakdown of ...

  7. Solydair Energies | Open Energy Information

    Open Energy Info (EERE)

    search Logo: Solydair Energies Name: Solydair Energies Address: Miraval Place: Les Thuiles Zip: 04400 Sector: Renewable Energy Product: Solar Evolution Year Founded: 2009...

  8. Natec Energy | Open Energy Information

    Open Energy Info (EERE)

    Natec Energy Jump to: navigation, search Name: Natec Energy Place: Madrid, Spain Zip: 28015 Sector: Solar Product: Solar system developer and supplier, Natec Energy is active in...

  9. Aleltho Energy | Open Energy Information

    Open Energy Info (EERE)

    Aleltho Energy Jump to: navigation, search Name: Aleltho Energy Place: United Kingdom Product: British clean energy venture capital and private equity firm. References: Aleltho...

  10. Energy Northwest | Open Energy Information

    Open Energy Info (EERE)

    Northwest Jump to: navigation, search Name: Energy Northwest Place: Washington Website: www.energy-northwest.comPages Twitter: @EnergyNorthwest Facebook: https:www.facebook.com...

  11. Sterling Energy | Open Energy Information

    Open Energy Info (EERE)

    Energy Jump to: navigation, search Name: Sterling Energy Place: Capistrano Beach, California Zip: 92624 Sector: Renewable Energy, Services Product: String representation "Sterling...

  12. Energy Efficiency | Open Energy Information

    Open Energy Info (EERE)

    Energy Efficiency Jump to: navigation, search Energy Efficiency refers to products or systems using less energy to do the same or better job than conventional products or systems....

  13. Energy News | Department of Energy

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

    Home Energy Education Challenge (AHEEC), a student competition created to help families save money by saving energy. May 15, 2014 Energy Department Announces Secretarial...

  14. Dezentrale Energie | Open Energy Information

    Open Energy Info (EERE)

    Dezentrale Energie Jump to: navigation, search Name: Dezentrale Energie Place: Neustadt a. Rbge., Germany Zip: D-31535 Sector: Wind energy Product: Wind power developer....

  15. Todd Energy | Open Energy Information

    Open Energy Info (EERE)

    Jump to: navigation, search Name: Todd Energy Place: New Zealand Sector: Renewable Energy Product: New Zealand energy company with operations in exploration, production and...

  16. SLP Energy | Open Energy Information

    Open Energy Info (EERE)

    Sector: Renewable Energy, Services Product: Focused on the renewable energy sector, SLP Energy offers early to late stage project development services and capabilities....

  17. Dei Energy | Open Energy Information

    Open Energy Info (EERE)

    Place: Bulgaria Sector: Renewable Energy Product: Bulgarian utility engaged in renewable energy project development. References: Dei Energy1 This article is a stub. You can help...

  18. Rumble Energy | Open Energy Information

    Open Energy Info (EERE)

    Rumble Energy Jump to: navigation, search Name: Rumble Energy Place: Toronto, Ontario, Canada Product: Toronto-based Rumble Energy is a small scale PV system installer that focuses...

  19. Bryte Energy | Open Energy Information

    Open Energy Info (EERE)

    Name: Bryte Energy Place: Leicestershire, United Kingdom Zip: LE3 0QP Sector: Hydro, Hydrogen, Renewable Energy, Services Product: Bryte Energy Ltd provides consultancy services...

  20. Energy Tomorrow | Department of Energy

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

    RSS July 16, 2015 Indian Energy Blog Read Office of Indian Energy blogs. August 15, 2016 The Energy Department's Weatherization Assistance Program services every political ...

  1. Tioga Energy | Open Energy Information

    Open Energy Info (EERE)

    Energy Jump to: navigation, search Logo: Tioga Energy Name: Tioga Energy Address: 2755 Campus Drive Place: San Mateo, California Zip: 94403 Region: Bay Area Sector: Solar Product:...

  2. Energy Storage | Open Energy Information

    Open Energy Info (EERE)

    around the clock. Some of the major issues concerning energy storage include cost, efficiency, and size. Benefits Make Renewable Energy Viable Allow for intermittent energy...

  3. Winkra Energie | Open Energy Information

    Open Energy Info (EERE)

    Winkra Energie Jump to: navigation, search Name: Winkra Energie Place: Hannover, Germany Zip: 30175 Sector: Wind energy Product: Hannover-based wind farm developer and operator,...

  4. Valence Energy | Open Energy Information

    Open Energy Info (EERE)

    Energy Jump to: navigation, search Name: Valence Energy Place: Santa Clara, California Zip: 95050 Sector: Services Product: California-based energy management software and services...

  5. Eshone Energy | Open Energy Information

    Open Energy Info (EERE)

    Eshone Energy Jump to: navigation, search Name: Eshone Energy Place: Santa Clara, California Zip: 95051 Product: California-based PV systems installer. References: Eshone Energy1...

  6. Colexon Energy | Open Energy Information

    Open Energy Info (EERE)

    Energy Jump to: navigation, search Name: Colexon Energy Place: Hamburg, Hamburg, Germany Zip: 20354 Sector: Solar, Wind energy Product: Germany-based PV system integrator and solar...

  7. ENRO Energie | Open Energy Information

    Open Energy Info (EERE)

    Energie Jump to: navigation, search Name: ENRO Energie Place: Essen, Germany Zip: 45128 Sector: Geothermal energy Product: Germany-based company engaged in the design and...

  8. Geothermal Energy | Open Energy Information

    Open Energy Info (EERE)

    Energy (Redirected from Geothermal Power) Jump to: navigation, search GEOTHERMAL ENERGYGeothermal Home Print PDF Geothermal Energy RSF GeothermalPowerStation.jpg Geothermal energy...

  9. Geothermal energy | Open Energy Information

    Open Energy Info (EERE)

    Geothermal energy Jump to: navigation, search Dictionary.png Geothermal energy: Geothermal energy is heat extracted from the Earth ( Geo (Earth) + thermal (heat) ) Other...

  10. Tenax Energy | Open Energy Information

    Open Energy Info (EERE)

    navigation, search Logo: Tenax Energy Name: Tenax Energy Place: Darwin, NT Country: Australia Zip: 0801 Sector: Marine and Hydrokinetic, Ocean, Renewable Energy Year Founded:...

  11. Ergon Energy | Open Energy Information

    Open Energy Info (EERE)

    Energy Jump to: navigation, search Name: Ergon Energy Place: Rockhampton, Queensland, Australia Zip: 4700 Product: Energy distribution and retailer focused on Queensland....

  12. Proark Energy | Open Energy Information

    Open Energy Info (EERE)

    Proark Energy Place: Copenhagen, Denmark Zip: 1370 Sector: Renewable Energy, Solar, Wind energy Product: Copenhagen-based management company owned by Proark - the Danish real...

  13. Akis Energy | Open Energy Information

    Open Energy Info (EERE)

    Jump to: navigation, search Name: Akis Energy Place: Istanbul, Turkey Sector: Solar, Wind energy Product: Istanbul-based energy division of the Akis Group and developer of...

  14. ENECO Energie | Open Energy Information

    Open Energy Info (EERE)

    Place: Rotterdam, Netherlands Zip: 3000 CL Sector: Biomass, Renewable Energy, Solar, Wind energy Product: Dutch-based energy company that transports, produces, trades and sells...

  15. Bloom Energy | Open Energy Information

    Open Energy Info (EERE)

    Bloom Energy Jump to: navigation, search Logo: Bloom Energy Name: Bloom Energy Address: 1252 Orleans Drive Place: Sunnyvale, California Zip: 94089 Region: Bay Area Year Founded:...

  16. Forth Energy | Open Energy Information

    Open Energy Info (EERE)

    search Name: Forth Energy Place: United Kingdom Sector: Renewable Energy Product: Joint venture between SSE and Forth Ports to develop renewable energy at ports around the...

  17. Energy Conservation

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

    Energy Goal 1: Energy Conservation LANL strives to reduce greenhouse gas emissions to meet and surpass Department of Energy goals. The Lab's goal is to reduce emissions from energy...

  18. Energy Technology Division Energy Technology Division Energy...

    Office of Scientific and Technical Information (OSTI)

    ... Motors Corp., Lockport, NY S. Smialowska, Ohio State University, Columbus R. E. Smith, Altran Corp., Huntersville, NC U.S. Department of Energy, Office of Energy Research, ...

  19. Energy consumption series: Lighting in commercial buildings

    SciTech Connect (OSTI)

    Not Available

    1992-03-11

    Lighting represents a substantial fraction of commercial electricity consumption. A wide range of initiatives in the Department of Energy`s (DOE) National Energy Strategy have focused on commercial lighting as a potential source of energy conservation. This report provides a statistical profile of commercial lighting, to examine the potential for lighting energy conservation in commercial buildings. The principal conclusion from this analysis is that energy use for lighting could be reduced by as much as a factor of four using currently available technology. The analysis is based primarily on the Energy Information Administration`s (EIA) 1986 Commercial Buildings Energy Consumption Survey (CBECS). The more recent 1989 survey had less detail on lighting, for budget reasons. While changes have occurred in the commercial building stock since 1986, the relationships identified by this analysis are expected to remain generally valid. In addition, the analytic approach developed here can be applied to the data that will be collected in the 1992 CBECS.

  20. Energy Storage

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

    Energy Storage Energy-Storage-Procurement-Image Permalink Gallery Sandia National Laboratories Develops Guidance Document for Energy Storage Procurement Energy, Energy Storage, News Sandia National Laboratories Develops Guidance Document for Energy Storage Procurement Through a partnership with Clean Energy States Alliance (CESA) and Clean Energy Group, Sandia has created a procurement guideline that offers useful information for states, municipalities, project developers, and end users to

  1. Energy Transmission

    Broader source: Energy.gov [DOE]

    Students will learn about everyday energy usage by completing a home energy audit and examine different lighting choices.

  2. Energy Storage

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

    Energy Storage Home/Energy Storage DOE-EERE Deputy Assistant Secretary for Renewable Power, Douglas Hollett. (DOE photo) Permalink Gallery DOE-EERE Deputy Assistant Secretary Hollett Visits Sandia Concentrating Solar Power, Customers & Partners, Cyber, Distribution Grid Integration, Energy, Energy Storage, Energy Storage Systems, Facilities, Global Climate & Energy, Global Climate & Energy, Grid Integration, Highlights - Energy Research, Microgrid, National Solar Thermal Test

  3. Substantially parallel flux uncluttered rotor machines

    DOE Patents [OSTI]

    Hsu, John S.

    2012-12-11

    A permanent magnet-less and brushless synchronous system includes a stator that generates a magnetic rotating field when sourced by polyphase alternating currents. An uncluttered rotor is positioned within the magnetic rotating field and is spaced apart from the stator. An excitation core is spaced apart from the stator and the uncluttered rotor and magnetically couples the uncluttered rotor. The brushless excitation source generates a magnet torque by inducing magnetic poles near an outer peripheral surface of the uncluttered rotor, and the stator currents also generate a reluctance torque by a reaction of the difference between the direct and quadrature magnetic paths of the uncluttered rotor. The system can be used either as a motor or a generator

  4. Chromomagnetic dipole-operator corrections in {bar B}{yields}X{sub s}{gamma} at O({beta}{sub 0}{alpha}{sub s}{sup 2})

    SciTech Connect (OSTI)

    Ferroglia, Andrea; Haisch, Ulrich

    2010-11-01

    We calculate the fermionic corrections to the photon-energy spectrum of {bar B}{yields}X{sub s}{gamma} which arise from the self-interference of the chromomagnetic dipole operator Q{sub 8} at next-to-next-to-leading order by applying naive non-Abelianization. The resulting O({beta}{sub 0}{alpha}{sub s}{sup 2}) correction to the {bar B}{yields}X{sub s}{gamma} branching ratio amounts to a relative shift of +0.12% (+0.27%) for a photon-energy cut of 1.6 GeV (1.0 GeV). We also comment on the potential size of resummation and nonperturbative effects related to Q{sub 8}.

  5. Wind energy | Open Energy Information

    Open Energy Info (EERE)

    Wind energy (Redirected from Wind power) Jump to: navigation, search Wind energy is a form of solar energy.1 Wind energy (or wind power) describes the process by which wind is...

  6. Wind energy | Open Energy Information

    Open Energy Info (EERE)

    Involved Help Apps Datasets Community Login | Sign Up Search Page Edit History Wind energy Jump to: navigation, search Wind energy is a form of solar energy.1 Wind energy (or...

  7. ENERGY STAR | Open Energy Information

    Open Energy Info (EERE)

    ENERGY STAR Jump to: navigation, search Logo: ENERGY STAR Name: ENERGY STAR Year Founded: 1992 Website: www.energystar.govindex.cfm?c References: About ENERGY STAR1 Contents 1...

  8. Energy Policy | Department of Energy

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

    Policy Energy Policy Energy Policy Offices of the Deputy General Counsel for Energy Policy Civilian Nuclear Programs (GC-72) Office of Standard Contract (GC-73) Electricity and Fossil Energy (GC-76)

  9. Solo Energy | Open Energy Information

    Open Energy Info (EERE)

    Solo Energy Jump to: navigation, search Name: Solo Energy Place: Alameda, California Zip: CA 94501 Product: Solo Energy is a US-based manufacturer of micro-turbine energy products....

  10. WIND ENERGY | Department of Energy

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

    WIND ENERGY WIND ENERGY WIND ENERGY POSTER (3.22 MB) More Documents & Publications WIND ENERGY Download LPO's Illustrated Poster Series LPO Financial Performance Report DOE-LPO_Email-Update_001_Through_11

  11. {eta} Prime {yields}{pi}{sup 0}{gamma}{gamma} and {eta} Prime {yields}{eta}{gamma}{gamma}: A primer analysis

    SciTech Connect (OSTI)

    Escribano, Rafel

    2012-10-23

    The electromagnetic rare decays {eta} Prime {yields}{pi}{sup 0}{gamma}{gamma} and {eta} Prime {yields}{pi}{sup 0}{gamma}{gamma} are analysed for the first time and their predicted branching ratios given. The vector meson exchange dominant contribution is treated using Vector Meson Dominance and the scalar component is estimated by means of the Linear Sigma Model. The agreement between our calculation and the measurement of the related process {eta} Prime {yields}{pi}{sup 0}{gamma}{gamma} is a check of the procedure. Scalar meson effects are seen to be irrelevant for {eta} Prime {yields}{pi}{sup 0}{gamma}{gamma}, while a significant scalar contribution due to the {sigma}(500) resonance seems to emerge in the case of {eta} Prime {yields}{pi}{sup 0}{gamma}{gamma}. Future measurements coming from KLOE-2, Crystal Ball, WASA, and BES-III will elucidate if any of these processes carry an important scalar contribution or they are simply driven by the exchange of vector mesons.

  12. United Nations Energy Knowledge Network (UN-Energy) | Open Energy...

    Open Energy Info (EERE)

    Energy Knowledge Network (UN-Energy) Jump to: navigation, search Logo: United Nations Energy Knowledge Network (UN-Energy) Name: United Nations Energy Knowledge Network (UN-Energy)...

  13. Play Fairway Analysis | Department of Energy

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

    Play Fairway Analysis Play Fairway Analysis Energy Department investments in adapting play fairway analysis to geothermal exploration could yield a potential 30 gigawatts of additional power from energy hidden deep in the Earth. In this poster, the University of Nevada at Reno illustrates the discovery of blind geothermal systems in the Great Basin Region, which spans 5 western states. source: James Faulds, Nevada Bureau of Mines and Geology Energy Department investments in adapting play fairway

  14. Sandia Energy - Installation Energy Security

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

    Installation Energy Security Home Stationary Power Safety, Security & Resilience of Energy Infrastructure Grid Modernization Resilient Electric Infrastructures Military...

  15. Foro Energy | Open Energy Information

    Open Energy Info (EERE)

    Energy Place: Littleton, Colorado Sector: Geothermal energy Product: Colorado-based startup developing hybrid thermalmechanical geothermal drilling technology. Coordinates:...

  16. Energy Literacy | Department of Energy

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

    Energy Literacy Energy Literacy Breakout Session 3D-Building Market Confidence and Understanding III: Engaging Key Audiences in Bioenergy Energy Literacy Linda Silverman, Team Lead, Workforce Development and Education, U.S. Department of Energy silverman_biomass_2014.pdf (2.31 MB) More Documents & Publications Energy Literacy Webcast: National Energy Literacy Virtual Town Hall Engaging Students in Energy Webinar Presentation Webinar: Energy Education and BITES - November 19 2012

  17. The State Energy Program: A Modest Investment ƒ A Mammoth Return

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

    PROGRAM The State Energy Program: A Modest Investment...A Mammoth Return How $45 Million Yields $256 Million in Annual Energy Cost Savings STEAB STATE ENERGY PROGRAM If Webster Had to Define it... State Energy Program: Noun: the only Federally funded, State-based initiative administered by the U.S. Department of Energy to encourage State and private- sector initiatives to: - Save Energy - Reduce Energy Costs - Create Energy from Non-Fossil Resources - Reduce Harmful Emissions See also: leverage,

  18. Intercropping of two Leucaena spp. with sweet potato: yield, growth rate and biomass

    SciTech Connect (OSTI)

    Swift, J.F.

    1982-01-01

    Results of trials with Leucaena leucocephala and Leucaena diversifolia at Wau, Papua New Guinea, showed potential benefits of the agroforestry cropping system. The total biomass yield (sweet potato plus firewood and green manure) was considerably greater than the yield per unit area of sweet potato alone. 3 references.

  19. (Energy Efficiency) | Department of Energy

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

    (Energy Efficiency) (Energy Efficiency) (Energy Efficiency) (40.67 KB) More Documents & Publications Joint Statement by Energy Ministers of G8, The People's Republic of China, India and The Republic of Korea Joint Statement by Energy Ministers of G8, The People's Republic of China, India and The Republic of Korea (June 2008) (Energy Efficiency)

  20. (Energy Efficiency) | Department of Energy

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

    (Energy Efficiency) (Energy Efficiency) (Energy Efficiency) (25.54 KB) More Documents & Publications Declaration of International Partnership for Energy Efficiency Cooperation Joint Statement by Energy Ministers of G8, The People's Republic of China, India and The Republic of Korea Joint Statement by Energy Ministers of G8, The People's Republic of China, India and The Republic of Korea (June 2008)

  1. Characterization of selected application of biomass energy technologies and a solar district heating and cooling system

    SciTech Connect (OSTI)

    D'Alessio, Dr., Gregory J.; Blaunstein, Robert P.

    1980-09-01

    The following systems are discussed: energy self-sufficient farms, wood gasification, energy from high-yield silviculture farms, and solar district heating and cooling. System descriptions and environmental data are included for each one. (MHR)

  2. HIA 2015 DOE Zero Energy Ready Home Case Study: BPC Green Builders...

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

    energy efficiency worked into the home's design have yielded a house that achieves a Home Energy Rating System (HERS) score of 33 without solar photovoltaics or -14 when a 13.1-kW...

  3. Calculations to assist in a new Hiroshima yield estimate. Final report, August 19-December 31, 1983

    SciTech Connect (OSTI)

    Kennedy, L.W.; Roth, L.A.; Needham, C.E.

    1984-06-15

    This report describes calculations and analysis performed in an attempt to provide a new estimate for the yield of the Hiroshima weapon. Newly discovered meteorological data was adapted for use in one- and two-dimensional hydrodynamic codes, and a series of calculations was then run for different values of yield. The objective was to determine what yield produced an overpressure record which could best be correlated with an actual trace measured at a parachute-dropped canister. Altitude of the bomb and canister-carrying aircraft at drop time was also a variable parameter. The analysis provides an estimate of 16.6 + 0.3 kt for the yield of the Hiroshima weapon. A drop altitude of near 35,500 feet is shown to be consistent with the signal time-of-arrival. This yield value is within the range of other estimates, but the drop altitude is higher than that previously assumed to be reasonable.

  4. To study of different level of nitrogen manure and density on yield and yield component of variety of K.S.C 704 in dry region of sistan

    SciTech Connect (OSTI)

    Dahmardeh, M.; Forghani, F.; Khammari, E.

    2008-01-30

    Out of three grain of the world, Corn is one of the best, About 7 to 10 thousand years ago in south of Mexico corn become domesticated. In the year 1995 culfivation of corn in the world was 130 mil/ha, and to Total production of the world of corn is 507 M/Tons. Average yield of corn in the year 1995 Among Producer countries was 7.78 To 7.60 t/ha in fance and united state was state was 2.36 To 2.20 t/ha, but in Brazil and Mexico Production of corn was different. With this regards, special manner has been arranged for the suitable cultivation or suitable density plants in one heactar on cultivation variety of K.S.C 704 corn. Also suitable level of Nitrogen manure, this Protect in climatic condition of Sistan region done, sith complete block design with 3 replication. Experiment has been selected as split plot, the main plot with 4 different concentration level such as (200-250-3500 and 350 Kg/ha) and sub plot density with 3 different level such as 111000,83000 and 66000 plan/ha respectively. From stage growth up to harvesting of corn in this reache having Data for each treat. ment, After harvesting Analysis of variance and companion of Average of each treatment has been done by DunKan method. Results has been shown, Measurment of characteristics (yield component) seed yield effected different density level of manure, with increasing of manure weight of one thousand seed yield and also in high density showed high significant differente amoung each other. These are with suitable climatic condition of sistan region if enough water will be available ed using Amount of 350 ks/ha Nitrogen manure and with density 111000 plants/ha we can product suitable seed yield Biological yield.

  5. BC TIPS - Hot-Humid Climate: New Orleans | Department of Energy

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

    Homes that provide substantial reductions in energy use and home-owner utility bills and recognizes the best practices for quality, comfort, health, and safety in the market. PDF ...

  6. New Advanced Refrigeration Technology Provides Clean Energy, Low Utility Bills for Supermarkets

    Broader source: Energy.gov [DOE]

    Traditional supermarket refrigeration systems found in most U.S. grocery stores require a substantial amount of energy to keep fruits and vegetables fresh year round. An average supermarket...

  7. Los Alamos National Laboratory (LANL) and Chevron Energy Technology...

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

    Wireless technology collects real-time information from oil and gas wells April 3, 2012 U.S. energy security and ... The collected data will improve well yields, saving ...

  8. California energy flow in 1993

    SciTech Connect (OSTI)

    Borg, I.Y.; Briggs, C.K.

    1995-04-01

    Energy consumption in the state of California decreased about 3% in 1993 reflecting continuation of the recession that was manifest in a moribund construction industry and a high state unemployment that ran counter to national recovery trends. Residential/commercial use decreased slightly reflecting a mild winter in the populous southern portion of the state, a decrease that was offset to some extent by an increase in the state population. Industrial consumption of purchased energy declined substantially as did production of self-generated electricity for in-house use. Consumption in the transportation sector decreased slightly. The amount of power transmitted by the utilities was at 1992 levels; however a smaller proportion was produced by the utilities themselves. Generation of electricity by nonutilities, primarily cogenerators and small power producers, was the largest of any state in the US. The growth in the number of private power producers combined with increased amounts of electricity sold to the public utilities set the stage for the sweeping proposals before the California Public Utility Commission to permit direct sales from the nonutilities to retail customers. California production of both oil and natural gas declined; however, to meet demand only the imports of natural gas increased. A break in the decade-long drought during the 1992--1993 season resulted in a substantial increase in the amount of hydroelectricity generated during the year. Geothermal energy`s contribution increased substantially because of the development of new resources by small power producers. Decline in steam production continued at The Geysers, the state`s largest field, principally owned and managed by a public utility. Increases in windpower constituted 1--1/2% of the total electric supply--up slightly from 1992. Several solar photo voltaic demonstration plants were in operation, but their contribution remained small.

  9. Incorporating Non-energy Benefits into Energy Savings Performance Contracts

    SciTech Connect (OSTI)

    Larsen, Peter; Goldman, Charles; Gilligan, Donald; Singer, Terry

    2012-06-01

    This paper evaluates the issue of non-energy benefits within the context of the U.S. energy services company (ESCO) industry?a growing industry comprised of companies that provide energy savings and other benefits to customers through the use of performance-based contracting. Recent analysis has found that ESCO projects in the public/institutional sector, especially at K-12 schools, are using performance-based contracting, at the behest of the customers, to partially -- but not fully -- offset substantial accumulated deferred maintenance needs (e.g., asbestos removal, wiring) and measures that have very long paybacks (roof replacement). This trend is affecting the traditional economic measures policymakers use to evaluate success on a benefit to cost basis. Moreover, the value of non-energy benefits which can offset some or all of the cost of the non-energy measures -- including operations and maintenance (O&M) savings, avoided capital costs, and tradable pollution emissions allowances-- are not always incorporated into a formal cost-effectiveness analysis of ESCO projects. Nonenergy benefits are clearly important to customers, but state and federal laws that govern the acceptance of these types of benefits for ESCO projects vary widely (i.e., 0-100percent of allowable savings can come from one or more non-energy categories). Clear and consistent guidance on what types of savings are recognized in Energy Savings agreements under performance contracts is necessary, particularly where customers are searching for deep energy efficiency gains in the building sector.

  10. Energy Assurance

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

    Sandian's Receive Hydrogen and Fuel Cell Program Achievement Award Center for Infrastructure Research and Innovation (CIRI), Energy, Energy Assurance, Energy Storage, Energy Storage Systems, Facilities, Infrastructure Security, Materials Science, News, News & Events, Research & Capabilities, Transportation Energy Sandian's Receive Hydrogen and Fuel Cell Program Achievement Award Two Sandians received the DOE Hydrogen and Fuel Cell Program achievement award. Pictured (from left to right)

  11. Mapping intra-field yield variation using high resolution satellite imagery to integrate bioenergy and environmental stewardship in an agricultural watershed

    SciTech Connect (OSTI)

    Hamada, Yuki; Ssegane, Herbert; Negri, Maria Cristina

    2015-07-31

    Biofuels are important alternatives for meeting our future energy needs. Successful bioenergy crop production requires maintaining environmental sustainability and minimum impacts on current net annual food, feed, and fiber production. The objectives of this study were to: (1) determine under-productive areas within an agricultural field in a watershed using a single date; high resolution remote sensing and (2) examine impacts of growing bioenergy crops in the under-productive areas using hydrologic modeling in order to facilitate sustainable landscape design. Normalized difference indices (NDIs) were computed based on the ratio of all possible two-band combinations using the RapidEye and the National Agricultural Imagery Program images collected in summer 2011. A multiple regression analysis was performed using 10 NDIs and five RapidEye spectral bands. The regression analysis suggested that the red and near infrared bands and NDI using red-edge and near infrared that is known as the red-edge normalized difference vegetation index (RENDVI) had the highest correlation (R2 = 0.524) with the reference yield. Although predictive yield map showed striking similarity to the reference yield map, the model had modest correlation; thus, further research is needed to improve predictive capability for absolute yields. Forecasted impact using the Soil and Water Assessment Tool model of growing switchgrass (Panicum virgatum) on under-productive areas based on corn yield thresholds of 3.1, 4.7, and 6.3 Mg·ha-1 showed reduction of tile NO3-N and sediment exports by 15.9%–25.9% and 25%–39%, respectively. Corresponding reductions in water yields ranged from 0.9% to 2.5%. While further research is warranted, the study demonstrated the integration of remote sensing and hydrologic modeling to quantify the multifunctional value of projected future landscape patterns in a context of sustainable bioenergy crop production.

  12. Mapping intra-field yield variation using high resolution satellite imagery to integrate bioenergy and environmental stewardship in an agricultural watershed

    DOE Public Access Gateway for Energy & Science Beta (PAGES Beta)

    Hamada, Yuki; Ssegane, Herbert; Negri, Maria Cristina

    2015-07-31

    Biofuels are important alternatives for meeting our future energy needs. Successful bioenergy crop production requires maintaining environmental sustainability and minimum impacts on current net annual food, feed, and fiber production. The objectives of this study were to: (1) determine under-productive areas within an agricultural field in a watershed using a single date; high resolution remote sensing and (2) examine impacts of growing bioenergy crops in the under-productive areas using hydrologic modeling in order to facilitate sustainable landscape design. Normalized difference indices (NDIs) were computed based on the ratio of all possible two-band combinations using the RapidEye and the National Agriculturalmore » Imagery Program images collected in summer 2011. A multiple regression analysis was performed using 10 NDIs and five RapidEye spectral bands. The regression analysis suggested that the red and near infrared bands and NDI using red-edge and near infrared that is known as the red-edge normalized difference vegetation index (RENDVI) had the highest correlation (R2 = 0.524) with the reference yield. Although predictive yield map showed striking similarity to the reference yield map, the model had modest correlation; thus, further research is needed to improve predictive capability for absolute yields. Forecasted impact using the Soil and Water Assessment Tool model of growing switchgrass (Panicum virgatum) on under-productive areas based on corn yield thresholds of 3.1, 4.7, and 6.3 Mg·ha-1 showed reduction of tile NO3-N and sediment exports by 15.9%–25.9% and 25%–39%, respectively. Corresponding reductions in water yields ranged from 0.9% to 2.5%. While further research is warranted, the study demonstrated the integration of remote sensing and hydrologic modeling to quantify the multifunctional value of projected future landscape patterns in a context of sustainable bioenergy crop production.« less

  13. ENERGY STAR® | Department of Energy

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

    Appliance & Equipment Standards » ENERGY STAR® ENERGY STAR® ENERGY STAR® is a joint program of the Environmental Protection Agency (EPA) and the Department of Energy (DOE). Its goal is to help consumers, businesses, and industry save money and protect the environment through the adoption of energy efficient products and practices. The ENERGY STAR label identifies top performing, cost-effective products, homes, and buildings. Since inception, ENERGY STAR has shown impressive results: in

  14. Energy Exchange | Department of Energy

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

    Energy Exchange Energy Exchange Energy Exchange Training and Trade Show: Providence, Rhode Island, August 9-11, 2016 Photo of the Providence, Rhode Island skyline. Building on the tradition of GovEnergy, the Energy Exchange is an educational and networking forum for those seeking to expand their knowledge of building operations, energy management, and sustainability in the federal sector. The Energy Exchange will be held at the Rhode Island Convention Center in Providence, Rhode Island. Training

  15. Energy Basics | Department of Energy

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

    Services » Energy Basics Energy Basics The basics about renewable energy and energy efficiency technologies: learn how they work, what they're used for, and how they can improve our lives, homes, businesses, and industries. The basics about renewable energy and energy efficiency technologies: learn how they work, what they're used for, and how they can improve our lives, homes, businesses, and industries. RENEWABLE ENERGY TECHNOLOGIES Biomass Technology Basics Geothermal Technology Basics

  16. Energy Efficiency | Department of Energy

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

    Efficiency Energy Efficiency The Energy Department's efforts to develop and deploy energy efficient solutions for buildings and manufacturing supply lines means large-scale energy and cost savings for all Americans. <a href="/node/993676">Learn about these successful efforts.</a> The Energy Department's efforts to develop and deploy energy efficient solutions for buildings and manufacturing supply lines means large-scale energy and cost savings for all Americans. Learn

  17. Conserving Energy | Department of Energy

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

    Energy Assurance » Emergency Preparedness » Community Guidelines » Conserving Energy Conserving Energy Conserving Energy During an energy emergency, customers can reduce stress on infrastructure by conserving energy. This will help you and your community recover more quickly. Officials can ask the public to conserve energy, including: Cutting back on driving, using public transportation, and telecommuting when possible; Refraining from using non-essential lights and appliances, especially

  18. Renewable Energy and Energy Efficiency Partnership (REEEP) |...

    Open Energy Info (EERE)

    Renewable Energy and Energy Efficiency Partnership (REEEP) Jump to: navigation, search Logo: Renewable Energy and Energy Efficiency Partnership Name: Renewable Energy and Energy...

  19. DOE Office of Energy Efficiency & Renewable Energy

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

    Energy Efficiency & Renewable Energy - Sandia Energy Energy Search Icon Sandia Home Locations Contact Us Employee Locator Energy & Climate Secure & Sustainable Energy Future ...

  20. Measurements of actinide-fission product yields in Caliban and Prospero metallic core reactor fission neutron fields

    SciTech Connect (OSTI)

    Casoli, P.; Authier, N. [CEA, Centre de Valduc, 21120 Is-sur-Tille (France); Laurec, J.; Bauge, E.; Granier, T. [CEA, Centre DIF, 91297 Arpajon (France)

    2011-07-01

    In the 1970's and early 1980's, an experimental program was performed on the facilities of the CEA Valduc Research Center to measure several actinide-fission product yields. Experiments were, in particular, completed on the Caliban and Prospero metallic core reactors to study fission-neutron-induced reactions on {sup 233}U, {sup 235}U, and {sup 239}Pu. Thick actinide samples were irradiated and the number of nuclei of each fission product was determined by gamma spectrometry. Fission chambers were irradiated simultaneously to measure the numbers of fissions in thin deposits of the same actinides. The masses of the thick samples and the thin deposits were determined by mass spectrometry and alpha spectrometry. The results of these experiments will be fully presented in this paper for the first time. A description of the Caliban and Prospero reactors, their characteristics and performances, and explanations about the experimental approach will also be given in the article. A recent work has been completed to analyze and reinterpret these measurements and particularly to evaluate the associated uncertainties. In this context, calculations have also been carried out with the Monte Carlo transport code Tripoli-4, using the published benchmarked Caliban description and a three-dimensional model of Prospero, to determine the average neutron energy causing fission. Simulation results will be discussed in this paper. Finally, new fission yield measurements will be proposed on Caliban and Prospero reactors to strengthen the results of the first experiments. (authors)

  1. Increase in ethanol yield via elimination of lactate production in an ethanol-tolerant mutant of Clostridium thermocellum

    SciTech Connect (OSTI)

    Biswas, Ranjita; Prabhu, Sandeep; Lynd, Lee R; Guss, Adam M

    2014-01-01

    Large-scale production of lignocellulosic biofuel is a potential solution to sustainably meet global energy needs. One-step consolidated bioprocessing (CBP) is a potentially advantageous approach for the production of biofuels, but requires an organism capable of hydrolyzing biomass to sugars and fermenting the sugars to ethanol at commercially viable titers and yields. Clostridium thermocellum, a thermophilic anaerobe, can ferment cellulosic biomass to ethanol and organic acids, but low yield, low titer, and ethanol sensitivity remain barriers to industrial production. Here, we deleted the hypoxanthine phosphoribosyltransferase gene in ethanol tolerant strain of C. thermocellum adhE*(EA) in order to allow use of previously developed gene deletion tools, then deleted lactate dehydrogenase (ldh) to redirect carbon flux towards ethanol. Upon deletion of ldh, the adhE*(EA) ldh strain produced 30% more ethanol than wild type on minimal medium. The adhE*(EA) ldh strain retained tolerance to 5% v/v ethanol, resulting in an ethanol tolerant platform strain of C. thermocellum for future metabolic engineering efforts.

  2. Geothermal EGS Demonstration Photo Library | Department of Energy

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

    Geothermal EGS Demonstration Photo Library Geothermal EGS Demonstration Photo Library Addthis Energy Department EGS Demonstration Yields First Commercial Power to the Grid 1 of 4 Energy Department EGS Demonstration Yields First Commercial Power to the Grid In April 2013, DOE industry partner Ormat Technologies succeeded in generating the nation's first commercial power from enhanced geothermal systems to the grid at Desert Peak, Nevada. Image: courtesy Ormat Technologies AltaRock

  3. Energy conservation in electrostatic fabric filtration of industrial dust

    SciTech Connect (OSTI)

    Ariman, T.

    1981-12-01

    Conservation in energy consumption in industrial fabric filtration systems has become very important due to the substantial increase in energy costs. Recently, an external electric field was utilized in the industrial dust control by fabric filters with very promising initial results. A substantial decrease in the pressure drop and an increase in collection efficiency were observed. The detailed outcome of the experimental research program in electrostatic fabric filtration was presented. The results show that pressure drop decreases substantially with the increased electrostatic field strength for all relevant parameters. Furthermore, the data of the experimental program was utilized to develop a semi-empirical model for the determination of the pressure drop and to establish an Energy-Optimized Design Criteria.

  4. Mapping and Assessment of the United States Ocean Wave Energy Resource

    SciTech Connect (OSTI)

    Paul T. Jacobson; George Hagerman; George Scott

    2011-12-01

    This project estimates the naturally available and technically recoverable U.S. wave energy resources, using a 51-month Wavewatch III hindcast database developed especially for this study by National Oceanographic and Atmospheric Administration’s (NOAA’s) National Centers for Environmental Prediction. For total resource estimation, wave power density in terms of kilowatts per meter is aggregated across a unit diameter circle. This approach is fully consistent with accepted global practice and includes the resource made available by the lateral transfer of wave energy along wave crests, which enables wave diffraction to substantially reestablish wave power densities within a few kilometers of a linear array, even for fixed terminator devices. The total available wave energy resource along the U.S. continental shelf edge, based on accumulating unit circle wave power densities, is estimated to be 2,640 TWh/yr, broken down as follows: 590 TWh/yr for the West Coast, 240 TWh/yr for the East Coast, 80 TWh/yr for the Gulf of Mexico, 1570 TWh/yr for Alaska, 130 TWh/yr for Hawaii, and 30 TWh/yr for Puerto Rico. The total recoverable wave energy resource, as constrained by an array capacity packing density of 15 megawatts per kilometer of coastline, with a 100-fold operating range between threshold and maximum operating conditions in terms of input wave power density available to such arrays, yields a total recoverable resource along the U.S. continental shelf edge of 1,170 TWh/yr, broken down as follows: 250 TWh/yr for the West Coast, 160 TWh/yr for the East Coast, 60 TWh/yr for the Gulf of Mexico, 620 TWh/yr for Alaska, 80 TWh/yr for Hawaii, and 20 TWh/yr for Puerto Rico.

  5. Combined Tevatron upper limit on gg{yields}H{yields}W{sup +}W{sup -} and constraints on the Higgs boson mass in fourth-generation fermion models

    SciTech Connect (OSTI)

    Aaltonen, T.; Mehtala, P.; Orava, R.; Osterberg, K.; Saarikko, H.; Remortel, N. van; Abazov, V. M.; Alexeev, G. D.; Artikov, A.; Budagov, J.; Chokheli, D.; Glagolev, V.; Golovanov, G.; Kharzheev, Y. N.; Malyshev, V. L.; Poukhov, O.; Prokoshin, F.; Semenov, A.; Simonenko, A.; Sisakyan, A.

    2010-07-01

    We combine results from searches by the CDF and D0 collaborations for a standard model Higgs boson (H) in the process gg{yields}H{yields}W{sup +}W{sup -} in pp collisions at the Fermilab Tevatron Collider at {radical}(s)=1.96 TeV. With 4.8 fb{sup -1} of integrated luminosity analyzed at CDF and 5.4 fb{sup -1} at D0, the 95% confidence level upper limit on {sigma}(gg{yields}H)xB(H{yields}W{sup +}W{sup -}) is 1.75 pb at m{sub H}=120 GeV, 0.38 pb at m{sub H}=165 GeV, and 0.83 pb at m{sub H}=200 GeV. Assuming the presence of a fourth sequential generation of fermions with large masses, we exclude at the 95% confidence level a standard-model-like Higgs boson with a mass between 131 and 204 GeV.

  6. ACCELERATE ENERGY

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

    Obama, State of the Union, Feb. 13, 2013 The U.S. Department of Energy, Council on Competitiveness and Alliance to Save Energy have joined forces to undertake in Accelerate Energy...

  7. Energy Efficiency

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

    In 2010, the Deputy Secretary of the U.S. Department of Energy and the Energy Minister of the Republic of South Africa (RSA) launched the U.S. - RSA Energy Dialogue to facilitate ...

  8. Experimental and theoretical rate constants for CH{sub 4} + O{sub 2} {yields} CH{sub 3} + HO{sub 2}

    SciTech Connect (OSTI)

    Srinivasan, N.K.; Michael, J.V.; Harding, L.B.; Klippenstein, S.J.

    2007-04-15

    In this study, rate constants for the primary initiation process in low to moderate temperature CH{sub 4} oxidation CH{sub 4} + O{sub 2} {yields} CH{sub 3} + HO{sub 2} have been measured in a reflected shock tube apparatus between 1655 and 1822 K using multipass absorption spectrometric detection of OH radicals at 308 nm. After rapid dissociation of HO{sub 2} yielding H atoms, which are instantaneously converted to OH by H + O{sub 2} {yields} OH + O, the temporal concentration of OH radicals was observed as the final product from the rate-controlling title reaction. The present work utilizes 18 optical passes corresponding to a total path length of 1.6 m. This configuration gives a signal to noise ratio of unity at {proportional_to}3 x 10{sup 12} radicals cm{sup -3}. Hence, kinetics experiments could be performed at conditions of low [CH{sub 4}]{sub 0} (60-70 ppm), thereby substantially reducing secondary chemistry. Possible implications of CH{sub 4} dissociation contributing to the OH formation rates were considered. The present experimental results agree with a priori variational transition state theoretical (VTST) calculations, k{sub th}=3.37 x 10{sup -19}T{sup 2.745} exp (-26,041K/T)cm{sup 3}molecule{sup -1} s{sup -1}, clearly showing overlap of experiment and theory, within experimental error. The new rate constant values obtained in this study are 8-10 times higher than the values used in the popular mechanisms GRI-Mech 3.0 and Leeds Methane Mechanism, version 1.5. (author)

  9. Energy Dissipation

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

    Record Highs | Department of Energy Dept. Reports: U.S. Wind Energy Production and Manufacturing Reaches Record Highs Energy Dept. Reports: U.S. Wind Energy Production and Manufacturing Reaches Record Highs August 6, 2013 - 8:00am Addthis WASHINGTON - The Energy Department released two new reports today showcasing record growth across the U.S. wind market -- increasing America's share of clean, renewable energy and supporting tens of thousands of jobs nationwide. According to these reports,

  10. Energy Storage

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

    SunShot Grand Challenge: Regional Test Centers Energy Storage Home/Tag:Energy Storage Energy Storage The contemporary grid limits renewable energy and other distributed energy sources from being economically and reliably integrated into the grid. While a national renewable energy portfolio standard (RPS) has yet to be established, 35 states have forged ahead with their own RPS programs and policies. As this generation becomes a larger portion of a utility's [...] By Tara Camacho-Lopez|

  11. California Recovery Act State Memo | Department of Energy

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

    California Recovery Act State Memo California Recovery Act State Memo California has substantial natural resources, including oil, gas, solar, wind, geothermal, and hydroelectric power. The American Recovery & Reinvestment Act (ARRA) is making a meaningful down payment on the nation's energy and environmental future. The Recovery Act investments in California are supporting a broad range of clean energy projects, from energy efficiency and the smart grid to solar and wind, geothermal and

  12. Gas-Fired Distributed Energy Resource Technology Characterizations

    SciTech Connect (OSTI)

    Goldstein, L.; Hedman, B.; Knowles, D.; Freedman, S. I.; Woods, R.; Schweizer, T.

    2003-11-01

    The U. S. Department of Energy (DOE) Office of Energy Efficiency and Renewable Energy (EERE) is directing substantial programs in the development and encouragement of new energy technologies. Among them are renewable energy and distributed energy resource technologies. As part of its ongoing effort to document the status and potential of these technologies, DOE EERE directed the National Renewable Energy Laboratory to lead an effort to develop and publish Distributed Energy Technology Characterizations (TCs) that would provide both the department and energy community with a consistent and objective set of cost and performance data in prospective electric-power generation applications in the United States. Toward that goal, DOE/EERE - joined by the Electric Power Research Institute (EPRI) - published the Renewable Energy Technology Characterizations in December 1997.As a follow-up, DOE EERE - joined by the Gas Research Institute - is now publishing this document, Gas-Fired Distributed Energy Resource Technology Characterizations.

  13. Fossil Energy

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

    Fossil Energy Research and Development Fossil Energy Research and Development Table of Contents Page Appropriation Language .................................................................................................................... FE-3 Overview ............................................................................................................................................ FE-4 Coal

  14. Energy Markets

    U.S. Energy Information Administration (EIA) Indexed Site

    will show a lower growth trajectory Source: EIA, International Energy Outlook 2013 carbon dioxide emissions billion metric tons 6 CSIS | Energy Markets Outlook November 16,...

  15. Energy Sustainability

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

    Features Energy Sustainability aboutassetsimagesicon-70th2.jpg Energy Sustainability Our Science Digests embrace complex issues around our science, technologies, and ...

  16. Energy Systems

    Broader source: Energy.gov [DOE]

    DOE Industrial Technologies Program Save Energy Now Webinar that provides information on how steam trap monitoring saves energy in manufacturing facilities.

  17. Renewable Energy

    Broader source: Energy.gov [DOE]

    Learn how the Energy Department's investments in clean, renewable energy technologies -- including wind, solar and geothermal sources -- are helping strengthen the American economy.

  18. Energy Efficiency

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

    the Deployment of Energy Efficiency & Renewable Energy Technologies in South Africa A Summary of the Trust for Conservation Global Cool Cities Alliance Project In 2010, the Deputy ...

  19. Energy Management

    K-12 Energy Lesson Plans and Activities Web site (EERE)

    Students will review energy basics and what they have learned in energy conservation efforts to report this improved knowledge to their home and school communities.

  20. ENERGY STAR

    SciTech Connect (OSTI)

    2011-12-16

    ENERGY STAR is a voluntary labeling and recognition program that seeks to accelerate the adoption of clean and efficient domestic energy technologies.