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Sample records for growing slowly due

  1. Circulating Fluidized Bed (CFB) Boilers Market will grow due...

    Open Energy Info (EERE)

    Energy Concerns to Push Global Market to Grow at 8.1% CAGR from 2013 to 2019 Oil Shale Market is Estimated to Reach USD 7,400.70 Million by 2022 more Group members (32)...

  2. CFD modeling and image analysis of exhaled aerosols due to a growing bronchial tumor: Towards non-invasive diagnosis and treatment of respiratory obstructive diseases

    SciTech Connect (OSTI)

    Xi, Jinxiang; Kim, JongWon; Si, Xiuhua A.; Corley, Richard A.; Kabilan, Senthil; Wang, Shengyu

    2015-01-01

    Diagnosis and prognosis of tumorigenesis are generally performed with CT, PET, or biopsy. Such methods are accurate, but have the limitations of high cost and posing additional health risks to patients. In this study, we introduce an alternative computer aided diagnostic tool that can locate malignant sites caused by tumorigenesis in a non-invasive and low-cost way. Our hypothesis is that exhaled aerosol distribution is unique to lung structure and is sensitive to airway structure variations. With appropriate approaches, it is possible to locate the disease site, determine the disease severity, and subsequently formulate a targeted drug delivery plan to treat the disease. This study numerically evaluated the feasibility of the proposed breath test in an image-based lung model with varying pathological stages of a bronchial squamous tumor. Large eddy simulations and a Lagrangian tracking approach were used to model respiratory airflows and aerosol dynamics. Respirations of tracer aerosols of 1 μm at a flow rate of 20 L/min were simulated, with the distributions of exhaled aerosols recorded on a filter at the mouth exit. Aerosol patterns were quantified with multiple analytical techniques such as concentration disparity, spatial scanning and fractal analysis. We demonstrated that a growing bronchial tumor induced notable variations in both the airflow and exhaled aerosol distribution. These variations became more apparent with increasing tumor severity. The exhaled aerosols exhibited distinctive pattern parameters such as spatial probability, fractal dimension, and multifractal spectrum. Results of this study show that morphometric measures of the exhaled aerosol pattern can be used to detect and monitor the pathological states of respiratory diseases in the upper airway. The proposed breath test also has the potential to locate the site of the disease, which is critical in developing a personalized, site-specific drug delivery protocol.

  3. CFD modeling and image analysis of exhaled aerosols due to a growing bronchial tumor: Towards non-invasive diagnosis and treatment of respiratory obstructive diseases

    SciTech Connect (OSTI)

    Xi, Jinxiang [Central Michigan Univ., Mount Pleasant, MI (United States); Kim, JongWon [Central Michigan Univ., Mount Pleasant, MI (United States); Si, Xiuhua A. [California Baptist Univ., Riverside, CA (United States); Corley, Richard A. [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Kabilan, Senthil [Pacific Northwest National Lab. (PNNL), Richland, WA (United States); Wang, Shengyu [First Affiliated Hospital of Xi'an Medical Univ., Shaanxi (China); Mayo Clinic, Rochester, MN (United States)

    2015-01-01

    Diagnosis and prognosis of tumorigenesis are generally performed with CT, PET, or biopsy. Such methods are accurate, but have the limitations of high cost and posing additional health risks to patients. In this study, we introduce an alternative computer aided diagnostic tool that can locate malignant sites caused by tumorigenesis in a non-invasive and low-cost way. Our hypothesis is that exhaled aerosol distribution is unique to lung structure and is sensitive to airway structure variations. With appropriate approaches, it is possible to locate the disease site, determine the disease severity, and subsequently formulate a targeted drug delivery plan to treat the disease. This study numerically evaluated the feasibility of the proposed breath test in an image-based lung model with varying pathological stages of a bronchial squamous tumor. Large eddy simulations and a Lagrangian tracking approach were used to model respiratory airflows and aerosol dynamics. Respirations of tracer aerosols of 1 ?m at a flow rate of 20 L/min were simulated, with the distributions of exhaled aerosols recorded on a filter at the mouth exit. Aerosol patterns were quantified with multiple analytical techniques such as concentration disparity, spatial scanning and fractal analysis. We demonstrated that a growing bronchial tumor induced notable variations in both the airflow and exhaled aerosol distribution. These variations became more apparent with increasing tumor severity. The exhaled aerosols exhibited distinctive pattern parameters such as spatial probability, fractal dimension, and multifractal spectrum. Results of this study show that morphometric measures of the exhaled aerosol pattern can be used to detect and monitor the pathological states of respiratory diseases in the upper airway. The proposed breath test also has the potential to locate the site of the disease, which is critical in developing a personalized, site-specific drug delivery protocol.

  4. CFD modeling and image analysis of exhaled aerosols due to a growing bronchial tumor: Towards non-invasive diagnosis and treatment of respiratory obstructive diseases

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

    Xi, Jinxiang; Kim, JongWon; Si, Xiuhua A.; Corley, Richard A.; Kabilan, Senthil; Wang, Shengyu

    2015-01-01

    Diagnosis and prognosis of tumorigenesis are generally performed with CT, PET, or biopsy. Such methods are accurate, but have the limitations of high cost and posing additional health risks to patients. In this study, we introduce an alternative computer aided diagnostic tool that can locate malignant sites caused by tumorigenesis in a non-invasive and low-cost way. Our hypothesis is that exhaled aerosol distribution is unique to lung structure and is sensitive to airway structure variations. With appropriate approaches, it is possible to locate the disease site, determine the disease severity, and subsequently formulate a targeted drug delivery plan to treatmore » the disease. This study numerically evaluated the feasibility of the proposed breath test in an image-based lung model with varying pathological stages of a bronchial squamous tumor. Large eddy simulations and a Lagrangian tracking approach were used to model respiratory airflows and aerosol dynamics. Respirations of tracer aerosols of 1 μm at a flow rate of 20 L/min were simulated, with the distributions of exhaled aerosols recorded on a filter at the mouth exit. Aerosol patterns were quantified with multiple analytical techniques such as concentration disparity, spatial scanning and fractal analysis. We demonstrated that a growing bronchial tumor induced notable variations in both the airflow and exhaled aerosol distribution. These variations became more apparent with increasing tumor severity. The exhaled aerosols exhibited distinctive pattern parameters such as spatial probability, fractal dimension, and multifractal spectrum. Results of this study show that morphometric measures of the exhaled aerosol pattern can be used to detect and monitor the pathological states of respiratory diseases in the upper airway. The proposed breath test also has the potential to locate the site of the disease, which is critical in developing a personalized, site-specific drug delivery protocol.« less

  5. CFD Modeling and Image Analysis of Exhaled Aerosols due to a Growing Bronchial Tumor: towards Non-Invasive Diagnosis and Treatment of Respiratory Obstructive Diseases

    SciTech Connect (OSTI)

    Xi, Jinxiang; Kim, JongWon; Si, Xiuhua A.; Corley, Richard A.; Kabilan, Senthil; Wang, Shengyu

    2015-02-06

    Diagnosis and prognosis of tumorigenesis are generally performed with CT, PET, or biopsy. Such methods are accurate, but have the limitations of high cost and posing additional health risks to patients. In this study, we introduce an alternative computer aided diagnostic tool that can locate malignant sites caused by tumorigenesis in a non-invasive and low-cost way. Our hypothesis is that exhaled aerosol distribution is unique to lung structure and is sensitive to airway structure vari-ations. With appropriate approaches, it is possible to locate the disease site, determine the disease severity, and subsequently formulate a targeted drug delivery plan to treat the disease. This study numerically evaluated the feasibility of the proposed breath test in an image-based lung model with varying pathological stages of a bronchial squamous tumor. Large eddy simulations and a Lagran-gian tracking approach were used to model respiratory airflows and aerosol dynamics. Respira-tions of tracer aerosols of 1 m at a flow rate of 20 L/min were simulated, with the distributions of exhaled aerosols recorded on a filter at the mouth exit. Aerosol patterns were quantified with multiple analytical techniques such as concentration disparity, spatial scanning and fractal analysis. We demonstrated that a growing bronchial tumor induced notable variations in both the airflow and exhaled aerosol distribution. These variations became more apparent with increasing tumor severity. The exhaled aerosols exhibited distinctive pattern parameters such as spatial probability, fractal dimension, and multifractal spectrum. Results of this study show that morphometric measures of the exhaled aerosol pattern can be used to detect and monitor the pathological states of respiratory diseases in the upper airway. The proposed breath test also has the potential to locate the site of the disease, which is critical in developing a personalized, site-specific drug de-livery protocol.

  6. Organization of growing random networks

    SciTech Connect (OSTI)

    Krapivsky, P. L.; Redner, S.

    2001-06-01

    The organizational development of growing random networks is investigated. These growing networks are built by adding nodes successively, and linking each to an earlier node of degree k with an attachment probability A{sub k}. When A{sub k} grows more slowly than linearly with k, the number of nodes with k links, N{sub k}(t), decays faster than a power law in k, while for A{sub k} growing faster than linearly in k, a single node emerges which connects to nearly all other nodes. When A{sub k} is asymptotically linear, N{sub k}(t){similar_to}tk{sup {minus}{nu}}, with {nu} dependent on details of the attachment probability, but in the range 2{lt}{nu}{lt}{infinity}. The combined age and degree distribution of nodes shows that old nodes typically have a large degree. There is also a significant correlation in the degrees of neighboring nodes, so that nodes of similar degree are more likely to be connected. The size distributions of the in and out components of the network with respect to a given node{emdash}namely, its {open_quotes}descendants{close_quotes} and {open_quotes}ancestors{close_quotes}{emdash}are also determined. The in component exhibits a robust s{sup {minus}2} power-law tail, where s is the component size. The out component has a typical size of order lnt, and it provides basic insights into the genealogy of the network.

  7. Bending of solitons in weak and slowly varying inhomogeneous plasma

    SciTech Connect (OSTI)

    Mukherjee, Abhik Janaki, M. S. Kundu, Anjan

    2015-12-15

    The bending of solitons in two dimensional plane is presented in the presence of weak and slowly varying inhomogeneous ion density for the propagation of ion acoustic soliton in unmagnetized cold plasma with isothermal electrons. Using reductive perturbation technique, a modified Kadomtsev-Petviashvili equation is obtained with a chosen unperturbed ion density profile. The exact solution of the equation shows that the phase of the solitary wave gets modified by a function related to the unperturbed inhomogeneous ion density causing the soliton to bend in the two dimensional plane, while the amplitude of the soliton remains constant.

  8. Precise rotation rates for five slowly rotating A stars

    SciTech Connect (OSTI)

    Gray, David F.

    2014-04-01

    Projected rotation rates of five early A-type slowly rotating stars are measured spectroscopically to a precision of 0.2 km s{sup 1}. A detailed Fourier analysis is done, as well as a comparison of profiles directly. Macroturbulence is needed in addition to rotation to reproduce the profile shapes. An upper limit of ?2 km s{sup 1} is placed on the microturbulence dispersion. Small unexplained differences between the models and the observations are seen in the sidelobe structure of the transforms. The v sin i results are: ? Dra, 26.2; ? Leo, 22.5; ? CMa A, 16.7; ? Gem A, 10.7; o Peg, 6.0 km s{sup 1}. These stars are suitable as standards for measuring rotation using less fundamental methods.

  9. Slowly Varying Dilaton Cosmologies and Their Field Theory Duals

    SciTech Connect (OSTI)

    Awad, Adel; Das, Sumit R.; Ghosh, Archisman; Oh, Jae-Hyuk; Trivedi, Sandip P.; /Tata Inst. /Stanford U., ITP /SLAC

    2011-06-28

    We consider a deformation of the AdS{sub 5} x S{sup 5} solution of IIB supergravity obtained by taking the boundary value of the dilaton to be time dependent. The time dependence is taken to be slowly varying on the AdS scale thereby introducing a small parameter {epsilon}. The boundary dilaton has a profile which asymptotes to a constant in the far past and future and attains a minimum value at intermediate times. We construct the sugra solution to first non-trivial order in {epsilon}, and find that it is smooth, horizon free, and asymptotically AdS{sub 5} x S{sup 5} in the far future. When the intermediate values of the dilaton becomes small enough the curvature becomes of order the string scale and the sugra approximation breaks down. The resulting dynamics is analysed in the dual SU(N) gauge theory on S{sup 3} with a time dependent coupling constant which varies slowly. When N{epsilon} << 1, we find that a quantum adiabatic approximation is applicable, and use it to argue that at late times the geometry becomes smooth AdS{sub 5} x S{sup 5} again. When N{epsilon} >> 1, we formulate a classical adiabatic perturbation theory based on coherent states which arises in the large N limit. For large values of the tHooft coupling this reproduces the supergravity results. For small 'tHooft coupling the coherent state calculations become involved and we cannot reach a definite conclusion. We argue that the final state should have a dual description which is mostly smooth AdS5 space with the possible presence of a small black hole.

  10. HERSCHEL AND SPITZER OBSERVATIONS OF SLOWLY ROTATING, NEARBY ISOLATED NEUTRON STARS

    SciTech Connect (OSTI)

    Posselt, B.; Pavlov, G. G.; Popov, S.; Wachter, S.

    2014-11-01

    Supernova fallback disks around neutron stars have been suspected to influence the evolution of the diverse neutron star populations. Slowly rotating neutron stars are the most promising places to find such disks. Searching for the cold and warm debris of old fallback disks, we carried out Herschel PACS (70 μm, 160 mu m) and Spitzer IRAC (3.6 μm, 4.5 μm) observations of eight slowly rotating (P ≈ 3-11 s) nearby (<1 kpc) isolated neutron stars. Herschel detected 160 μm emission (>5σ) at locations consistent with the positions of the neutron stars RX J0806.4-4123 and RX J2143.0+0654. No other significant infrared emission was detected from the eight neutron stars. We estimate probabilities of 63%, 33%, and 3% that, respectively, none, one, or both Herschel PACS 160 μm detections are unrelated excess sources due to background source confusion or an interstellar cirrus. If the 160 μm emission is indeed related to cold (10-22 K) dust around the neutron stars, this dust is absorbing and re-emitting ∼10% to ∼20% of the neutron stars' X-rays. Such high efficiencies would be at least three orders of magnitude larger than the efficiencies of debris disks around nondegenerate stars. While thin dusty disks around the neutron stars can be excluded as counterparts of the 160 μm emission, dusty asteroid belts constitute a viable option.

  11. Growing America's Energy Future

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

    emerging U.S. bioenergy industry provides a secure and growing supply of transportation fuels, biopower, and bioproducts produced from a range of abundant, renewable biomass resources. Bioenergy can help ensure a secure, sustainable, and economically sound future by reducing U.S. dependence on foreign oil, developing domestic clean energy sources, and generating domestic green jobs. Bioenergy can also help address growing concerns about climate change by reducing greenhouse gas emissions to

  12. Growing Giant Crystals

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

    crystals Growing Giant Crystals A new process similar to making rock candy was developed at NIF to rapidly grow very large crystals that are about 2 cubic feet in size and weigh up to 800 pounds-about the weight of a large grizzly bear! The crystals are made of potassium dihydrogen phosphate (or KDP), a naturally occurring chemical. In crystal form, KDP has good optical properties. Crystal plates have special optical properties, like prisms, that transmit, bend, and break light up into the

  13. Slowly moving test charge in two-electron component non-Maxwellian plasma

    SciTech Connect (OSTI)

    Ali, S.; Eliasson, B.

    2015-08-15

    Potential distributions around a slowly moving test charge are calculated by taking into account the electron-acoustic waves in an unmagnetized plasma. Considering a neutralizing background of static positive ions, the supra-thermal hot and cold electrons are described by the Vlasov equations to account for the Kappa (power-law in velocity space) and Maxwell equilibrium distributions. Fourier analysis further leads to the derivation of electrostatic potential showing the impact of supra-thermal hot electrons. The test charge moves slowly in comparison with the hot and cold electron thermal speeds and is therefore shielded by the electrons. This gives rise to a short-range Debye-Hückel potential decaying exponentially with distance and to a far field potential decaying as inverse third power of the distance from the test charge. The results are relevant for both laboratory and space plasmas, where supra-thermal hot electrons with power-law distributions have been observed.

  14. Slowly rotating neutron and strange stars in R{sup 2} gravity

    SciTech Connect (OSTI)

    Staykov, Kalin V.; Yazadjiev, Stoytcho S.; Doneva, Daniela D.; Kokkotas, Kostas D. E-mail: daniela.doneva@uni-tuebingen.de E-mail: kostas.kokkotas@uni-tuebingen.de

    2014-10-01

    In the present paper we investigate self-consistently slowly rotating neutron and strange stars in R-squared gravity with Lagrangian f(R)=R+aR{sup 2}, where a is a parameter. For this purpose we first derive the equations describing the structure of the slowly rotating compact stars in f(R)-gravity and then simultaneously solve numerically the exterior and the interior problem. The structure of the slowly rotating neutron stars is studied for two different hadronic equations of state and a strange matter equation of state. The moment of inertia and its dependence on the stellar mass and the R-squared gravity parameter a is also examined in details. The numerical results show that the neutron star moment of inertia can be up to 30% larger compared to the corresponding general relativistic models. This is much higher than the change in the maximum mass induced by R-squared gravity and is beyond the EOS uncertainty. In this way the future observations of the moment of inertia of compact stars could allow us to distinguish between general relativity and f(R) gravity, and more generally to test the strong field regime of gravity.

  15. Bioproducts and Biofuels - Growing Together! | Department of...

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

    and Biofuels - Growing Together Bioproducts and Biofuels - Growing Together Breakout Session 2B-Integration of Supply Chains II: Bioproducts-Enabling Biofuels and Growing the ...

  16. Longitudinal Space Charge Effect in Slowly Converging/Diverging Relativistic Beams

    SciTech Connect (OSTI)

    Bane, Karl LF

    2002-07-22

    Beginning with the Green function for a rod beam in a round beam pipe we derive the space charge induced average energy change and rms spread for relativistic beams that are slowly converging or diverging in round beam pipes, a result that tends to be much larger than the 1/{gamma}{sup 2} dependence for parallel beams. Our results allow for beams with longitudinal-transverse correlation, and for slow variations in beam pipe radius. We calculate, in addition, the space charge component of energy change and spread in a chicane compressor. This component indicates source regions of coherent synchrotron radiation (CSR) energy change in systems with compression. We find that this component, at the end of example compressors, approximates the total induced voltage obtained by more detailed CSR calculations. Our results depend on beam pipe radius (although only weakly) whereas CSR calculations do not normally include this parameter, suggesting that results of such calculations, for systems with beam pipes, are not complete.

  17. An argument for weakly magnetized, slowly rotating progenitors of long gamma-ray bursts

    SciTech Connect (OSTI)

    Moreno Méndez, Enrique

    2014-01-20

    Using binary evolution with Case-C mass transfer, the spins of several black holes (BHs) in X-ray binaries (XBs) have been predicted and confirmed (three cases) by observations. The rotational energy of these BHs is sufficient to power up long gamma-ray bursts (GRBs) and hypernovae (HNe) and still leave a Kerr BH behind. However, strong magnetic fields and/or dynamo effects in the interior of such stars deplete their cores from angular momentum preventing the formation of collapsars. Thus, even though binaries can produce Kerr BHs, most of their rotation is acquired from the stellar mantle, with a long delay between BH formation and spin up. Such binaries would not form GRBs. We study whether the conditions required to produce GRBs can be met by the progenitors of such BHs. Tidal-synchronization and Alfvén timescales are compared for magnetic fields of different intensities threading He stars. A search is made for a magnetic field range that allows tidal spin up all the way in to the stellar core but prevents its slow down during differential rotation phases. The energetics for producing a strong magnetic field during core collapse, which may allow for a GRB central engine, are also estimated. An observationally reasonable choice of parameters is found (B ≲ 10{sup 2} G threading a slowly rotating He star) that allows Fe cores to retain substantial angular momentum. Thus, the Case-C mass-transfer binary channel is capable of explaining long GRBs. However, the progenitors must have low initial spin and low internal magnetic field throughout their H-burning and He-burning phases.

  18. Quantum states built on classical nonlinear resonances for slowly deforming billiards

    SciTech Connect (OSTI)

    Jha, Nandan; Jain, Sudhir R.

    2014-10-15

    We study the modification in the energy spectrum of a closed, adiabatic Hamiltonian system due to the presence of classical nonlinear resonances. A number of resonances are shown to appear in the neighbourhood of the unperturbed energy levels. The unperturbed system is a simple rectangular billiard, subjected to adiabatic rotations and vibrations. We believe that the results hold equally well for a generic unperturbed system expressible in action variables alone, and perturbed there from.

  19. Growing America's Energy Future | Department of Energy

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

    Growing America's Energy Future Growing America's Energy Future The emerging U.S. bioenergy industry provides a secure and growing supply of transportation fuels, biopower, and bioproducts from a range of biomass resources. Abundant, renewable bioenergy can help secure America's energy future, reducing our dependence on foreign oil and ensuring American prosperity while protecting the environment. Bioenergy can also help mitigate growing concerns about climate change by having an impact in

  20. What Makes Clouds Form, Grow and Die?

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

    Makes Clouds Form, Grow and Die? What Makes Clouds Form, Grow and Die? Simulations Show Raindrops Physics May Affect Climate Model Accuracy February 19, 2015 thunderstorm Brazil shuttle NASA 1984 540 PNNL scientists used real-world observations to simulate how small clouds are likely to stay shallow, while larger clouds grow deeper because they mix with less dry air. Pictured are small and large thunderstorms growing over southern Brazil, taken from the space shuttle. Image: NASA Johnson Space

  1. Ames Lab 101: Growing Crystals in Space

    ScienceCinema (OSTI)

    Trivedi, Rohit

    2012-08-29

    Rohit Trivedi, distinguished professor of materials science and engineering, discusses his research with NASA to grow crystals in space.

  2. Ames Lab 101: Growing Crystals in Space

    SciTech Connect (OSTI)

    Trivedi, Rohit

    2011-01-01

    Rohit Trivedi, distinguished professor of materials science and engineering, discusses his research with NASA to grow crystals in space.

  3. Silicon crystal growing by oscillating crucible technique

    DOE Patents [OSTI]

    Schwuttke, G.H.; Kim, K.M.; Smetana, P.

    1983-08-03

    A process for growing silicon crystals from a molten melt comprising oscillating the container during crystal growth is disclosed.

  4. Growing America's Energy Future: Bioenergy Technologies Office...

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

    America's Energy Future: Bioenergy Technologies Office Successes of 2014 Growing America's Energy Future: Bioenergy Technologies Office Successes of 2014 The Bioenergy Technologies ...

  5. Maine Company Growing with Weatherization Work

    Broader source: Energy.gov [DOE]

    Maine's BIOSAFE Environmental Services expands into weatherization, assisting low-income families with their services and creating jobs as business grows.

  6. Rising Sea Levels Due to Global Warming Are Unstoppable

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

    Rising Sea Levels Due to Global Warming Are Unstoppable Rising Sea Levels Due to Global Warming Are Unstoppable Mitigation can slow down but not prevent sea level rise for centuries to come August 5, 2013 Contact: Linda Vu, Lvu@lbl.gov, +1 510 495 2402 washington.jpg Because seawater absorbs heat more slowly than the atmosphere above it, our oceans won't feel the full impact of the greenhouse gases already in the air for hundreds of years. Warm water expands, raising sea levels. (Courtesy W.

  7. Growing the Future Bioeconomy | Department of Energy

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

    the Future Bioeconomy Growing the Future Bioeconomy Breakout Session IA-Conversion Technologies I: Industrial Perspectives on Pathways to Advanced Biofuels Growing the Future Bioeconomy Joel Velasco, Senior Vice President, Amyris, Inc velasco_biomass_2014 (3.29 MB) More Documents & Publications Biomass IBR Fact Sheet: Amyris, Inc. Biomass IBR Fact Sheet: Amyris, Inc. Sustainable Alternative Jet Fuels

  8. Researchers Growing Silicon Films for Solar Cells

    Broader source: Energy.gov [DOE]

    This photograph features Chaz Teplin, left, and Howard Branz, right, scientists at the National Renewable Energy Laboratory. They use a hot-wire chemical vapor deposition system to grow silicon...

  9. Growing Americas Energy Future

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

    America's Energy Future The emerging U.S. bioenergy industry provides a secure and growing supply of transportation fuels, biopower, and bioproducts from a range of biomass resources. Abundant, renewable bioenergy can help secure America's energy future, reducing our dependence on foreign oil and ensur- ing American prosperity while protecting the environment. Bioenergy can also help mitigate growing concerns about climate change by having an impact in decreasing green- house gas emissions,

  10. Generation mechanism of the slowly drifting narrowband structure in the type IV solar radio bursts observed by AMATERAS

    SciTech Connect (OSTI)

    Katoh, Y.; Nishimura, Y.; Kumamoto, A.; Ono, T.; Iwai, K.; Misawa, H.; Tsuchiya, F.

    2014-05-20

    We investigate the type IV burst event observed by AMATERAS on 2011 June 7, and reveal that the main component of the burst was emitted from the plasmoid eruption identified in the EUV images of the Solar Dynamics Observatory (SDO)/AIA. We show that a slowly drifting narrowband structure (SDNS) appeared in the burst's spectra. Using statistical analysis, we reveal that the SDNS appeared for a duration of tens to hundreds of milliseconds and had a typical bandwidth of 3 MHz. To explain the mechanism generating the SDNS, we propose wave-wave coupling between Langmuir waves and whistler-mode chorus emissions generated in a post-flare loop, which were inferred from the similarities in the plasma environments of a post-flare loop and the equatorial region of Earth's inner magnetosphere. We assume that a chorus element with a rising tone is generated at the top of a post-flare loop. Using the magnetic field and plasma density models, we quantitatively estimate the expected duration of radio emissions generated from coupling between Langmuir waves and chorus emissions during their propagation in the post-flare loop, and we find that the observed duration and bandwidth properties of the SDNS are consistently explained by the proposed generation mechanism. While observations in the terrestrial magnetosphere show that the chorus emissions are a group of large-amplitude wave elements generated naturally and intermittently, the mechanism proposed in the present study can explain both the intermittency and the frequency drift in the observed spectra.

  11. Method of synthesizing and growing copper-indium-diselenide (CuInSe/sub 2/) crystals

    DOE Patents [OSTI]

    Ciszek, T.F.

    1984-11-29

    A process for preparing CuInSe/sub 2/ crystals includes melting a sufficient quantity of B/sub 2/O/sub 2/ along with stochiometric quantities of Cu, In, and Se in a crucible in a high-pressure atmosphere of inert gas to encapsulate the CuInSe/sub 2/ melt and confine the Se to the crucible. Additional Se in the range of 1.8 to 2.2% over the stochiometric quantity is preferred to make up for small amounts of Se lost in the process. The melt can then be cooled slowly to form the crystal as direct solidification, or the crystal can be grown by inserting a seed crystal through the B/sub 2/O/sub 3/ encapsulate into contact with the CuInSe/sub 2/ melt and withdrawing the seed upwardly to grow the crystal thereon from the melt.

  12. Prealloyed catalyst for growing silicon carbide whiskers

    DOE Patents [OSTI]

    Shalek, Peter D. (Los Alamos, NM); Katz, Joel D. (Niagara Falls, NY); Hurley, George F. (Los Alamos, NM)

    1988-01-01

    A prealloyed metal catalyst is used to grow silicon carbide whiskers, especially in the .beta. form. Pretreating the metal particles to increase the weight percentages of carbon or silicon or both carbon and silicon allows whisker growth to begin immediately upon reaching growth temperature.

  13. Growing Cutting-edge X-ray Optics

    ScienceCinema (OSTI)

    Ray Conley

    2013-07-17

    Ever imagined that an Xbox controller could help open a window into a world spanning just one billionth of a meter? Brookhaven Lab's Ray Conley grows cutting-edge optics called multilayer Laue lenses (MLL) one atomic layer at a time to focus high-energy x-rays to within a single nanometer. To achieve this focusing feat, Ray uses a massive, custom-built atomic deposition device, an array of computers, and a trusty Xbox controller. These lenses will be deployed at the Lab's National Synchrotron Light Source II, due to begin shining super-bright light on pressing scientific puzzles in 2015

  14. Survey Says: Workplace Charging is Growing in Popularity and Impact |

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

    Department of Energy Survey Says: Workplace Charging is Growing in Popularity and Impact Survey Says: Workplace Charging is Growing in Popularity and Impact November 18, 2014 - 3:54pm Addthis Survey Says: Workplace Charging is Growing in Popularity and Impact Survey Says: Workplace Charging is Growing in Popularity and Impact Survey Says: Workplace Charging is Growing in Popularity and Impact Survey Says: Workplace Charging is Growing in Popularity and Impact Sarah Olexsak Workplace Charging

  15. Spring Forward: Top Strategies for Growing and Scaling Your Program...

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

    Spring Forward: Top Strategies for Growing and Scaling Your Program (301) Spring Forward: Top Strategies for Growing and Scaling Your Program (301) May 2

  16. Influence of drought on growing season carbon and water cycling...

    Office of Scientific and Technical Information (OSTI)

    Influence of drought on growing season carbon and water cycling with changing land cover ... Title: Influence of drought on growing season carbon and water cycling with changing land ...

  17. Growing Energy - How Biofuels Can Help End America's Oil Dependence...

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

    Growing Energy - How Biofuels Can Help End America's Oil Dependence Growing Energy - How Biofuels Can Help End America's Oil Dependence America's oil dependence threatens our ...

  18. Land Management Practices More Critical as Biofuels Use Grows

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

    Land Management Practices More Critical as Biofuels Use Grows Land Management Practices More Critical as Biofuels Use Grows Climate Simulations Run at NERSC Show Cultivation Causes ...

  19. About the Bioenergy Technologies Office: Growing America's Energy...

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

    You are here Home About the Bioenergy Technologies Office: Growing America's Energy Future About the Bioenergy Technologies Office: Growing America's Energy Future The U.S. ...

  20. Growing America's Energy Future Factsheet | Department of Energy

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

    Growing America's Energy Future Factsheet Growing America's Energy Future Factsheet The emerging U.S. bioenergy industry provides a secure and growing supply of transportation fuels, biopower, and bioproducts produced from a range of abundant, renewable biomass resources. overview_factsheet.pdf (133.31 KB) More Documents & Publications Growing America's Energy Future Webinar: Bioproducts in the Federal Bioeconomy Portfolio Webinar Conversion Factsheet

  1. Fast-growing willow shrub named `Canastota`

    DOE Patents [OSTI]

    Abrahamson, Lawrence P.; Kopp, Richard F.; Smart, Lawrence B.; Volk, Timothy A.

    2007-05-15

    A distinct male cultivar of Salix sachalinensis.times.S. miyabeana named `Canastota`, characterized by rapid stem growth producing greater than 2.7-fold more woody biomass than its female parent (Salix sachalinensis `SX61`), 28% greater woody biomass yield than its male parent (Salix miyabeana `SX64`), and 20% greater woody biomass yield than a standard production cultivar, Salix dasyclados `SV1` when grown in the same field for the same length of time (two growing seasons after coppice) in Tully, N.Y. `Canastota` can be planted from dormant stem cuttings, produces multiple stems after coppice, and the stem biomass can be harvested when the plant is dormant. In the spring following harvest, the plant will re-sprout very vigorously, producing new stems that can be harvested after two to four years of growth. This harvest cycle can be repeated several times. `Canastota` displays a low incidence of rust disease or damage by willow sawfly.

  2. Turkey opens electricity markets as demand grows

    SciTech Connect (OSTI)

    McKeigue, J.; Da Cunha, A.; Severino, D. [Global Business Reports (United States)

    2009-06-15

    Turkey's growing power market has attracted investors and project developers for over a decade, yet their plans have been dashed by unexpected political or financial crises or, worse, obstructed by a lengthy bureaucratic approval process. Now, with a more transparent retail electricity market, government regulators and investors are bullish on Turkey. Is Turkey ready to turn the power on? This report closely examine Turkey's plans to create a power infrastructure capable of providing the reliable electricity supplies necessary for sustained economic growth. It was compiled with on-the-ground research and extensive interview with key industrial and political figures. Today, hard coal and lignite account for 21% of Turkey's electricity generation and gas-fired plants account for 50%. The Alfin Elbistan-B lignite-fired plant has attracted criticism for its lack of desulfurization units and ash dam facilities that have tarnished the industry's image. A 1,100 MW hard-coal fired plant using supercritical technology is under construction. 9 figs., 1 tab.

  3. Financing the Growing American Auto Industry | Department of...

    Office of Environmental Management (EM)

    the Growing American Auto Industry Financing the Growing American Auto Industry March 26, 2015 - 12:01am Addthis Peter W. Davidson Peter W. Davidson Former Executive Director of ...

  4. India's Energy [In]Security and Growing Competition from China...

    Office of Scientific and Technical Information (OSTI)

    India's Energy InSecurity and Growing Competition from China Citation Details In-Document Search Title: India's Energy InSecurity and Growing Competition from China You are ...

  5. Biomass Fueling America’s Growing Clean Energy Economy

    Broader source: Energy.gov [DOE]

    Biomass is the most abundant biological material on the planet. It is renewable; it grows almost everywhere; and it provides fuel, power, chemicals, and many other products. Find out how biomass is helping grow America's clean energy economy.

  6. #YearofAction: Growing the Clean Energy Economy | Department...

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

    YearofAction: Growing the Clean Energy Economy YearofAction: Growing the Clean Energy Economy January 29, 2014 - 6:03pm Addthis During the State of the Union address, President ...

  7. Final Report - Grow Solar Wisconsin Team | Department of Energy

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

    Grow Solar Wisconsin Team Final Report - Grow Solar Wisconsin Team Awardee: Midwest Renewable Energy Association Location: Custer, WI Subprogram: Soft Costs Funding Program: Rooftop Solar Challenge 1 The Grow Solar Wisconsin Team is working to reduce the cost of photovoltaic (PV) system installations through the removal of process and institutional barriers. Grow Solar Wisconsin RSC 5686.pdf (264.43 KB) More Documents & Publications QER - Comment of Edison Electric Institute (EEI) 2 Final

  8. Bioproducts: Enabling Biofuels and Growing the Bioeconomy | Department of

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

    Energy Bioproducts: Enabling Biofuels and Growing the Bioeconomy Bioproducts: Enabling Biofuels and Growing the Bioeconomy Breakout Session 2B-Integration of Supply Chains II: Bioproducts-Enabling Biofuels and Growing the Bioeconomy Bioproducts: Enabling Biofuels and Growing the Bioeconomy Katy Christiansen and Nichole Fitzgerald, AAAS Fellows, Bioenergy Technologies Office, U.S. Department of Energy christiansen_and_fitzgerald_biomass_2014 (691.62 KB) More Documents & Publications

  9. On carbon footprints and growing energy use

    SciTech Connect (OSTI)

    Oldenburg, C.M.

    2011-06-01

    Could fractional reductions in the carbon footprint of a growing organization lead to a corresponding real reduction in atmospheric CO{sub 2} emissions in the next ten years? Curtis M. Oldenburg, head of the Geologic Carbon Sequestration Program of LBNLs Earth Sciences Division, considers his own organization's carbon footprint and answers this critical question? In addressing the problem of energy-related greenhouse gas (GHG) emissions and climate change, it is essential that we understand which activities are producing GHGs and the scale of emission for each activity, so that reduction efforts can be efficiently targeted. The GHG emissions to the atmosphere of an individual or group are referred to as the carbon footprint. This terminology is entirely appropriate, because 85% of the global marketed energy supply comes from carbon-rich fossil fuel sources whose combustion produces CO{sub 2}, the main GHG causing global climate change. Furthermore, the direct relation between CO2 emissions and fossil fuels as they are used today makes energy consumption a useful proxy for carbon footprint. It would seem to be a simple matter to reduce energy consumption across the board, both individually and collectively, to help reduce our carbon footprints and therefore solve the energyclimate crisis. But just how much can we reduce carbon footprints when broader forces, such as growth in energy use, cause the total footprint to simultaneously expand? In this feature, I present a calculation of the carbon footprint of the Earth Sciences Division (ESD), the division in which I work at Lawrence Berkeley National Laboratory (LBNL), and discuss the potential for reducing this carbon footprint. It will be apparent that in terms of potential future carbon footprint reductions under projections of expected growth, ESD may be thought of as a microcosm of the situation of the world as a whole, in which alternatives to the business-as-usual use of fossil fuels are needed if absolute

  10. The growing world LP-gas supply

    SciTech Connect (OSTI)

    Hoare, M.C.

    1988-11-01

    The possible range of future (LPG) export availabilities is huge, but actual production levels depend on factors, many of which are beyond our direct control - world demand for crude oil and gas, developments in technology, and the price of both energy in general and LPG specifically. Although these factors limit some of the potential developments, a substantial increase in LPG supply is certain, and this is likely to depress its price relative to other products. Over the last few years, a dramatic expansion has taken place in the industry. From 1980 to 1987, non-Communist world production of LPG increased by close to 35%, to a total of 115 million tonnes. If this is set against the general energy scene, LPG represented 3.7% of crude oil production by weight in 1980, rising to 5.4% in 1987. This growth reflects rise in consciousness around the world of the value of the product. LPG is no longer regarded as a byproduct, which is flared or disposed of at low value, but increasingly as a co-product, and much of the growth in production has been due to the installation of tailored recovery systems. LPG markets historically developed around sources of supply, constrained by the costs of transportation. The major exceptions, of course, were the Middle East, the large exporter, and Japan, the large importer.

  11. NISE Requests Due Feb. 24

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

    NISE Requests Due Feb. 24 NISE Requests Due Feb. 24 January 1, 2011 by Francesca Verdier The first round of NERSC Initiative for Scientific Exploration (NISE) requests are due February 24. Ten percent of NERSC time is allocated through this program. See NERSC Initiative for Scientific Exploration. Subscribe via RSS Subscribe Browse by Date August 2016 June 2016 May 2016 April 2016 January 2016 December 2015 November 2015 October 2015 September 2015 August 2015 July 2015 April 2015 March 2015

  12. Engaging and Growing Small Contractor Businesses | Department of Energy

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

    and Growing Small Contractor Businesses Engaging and Growing Small Contractor Businesses Better Buildings Neighborhood Program Workforce Peer Exchange Call: Engaging and Growing Small Contractor Businesses, call slides and discussion summary, November 8, 2012. Call Slides and Discussion Summary (376.64 KB) More Documents & Publications Quality Control, Standardization of Upgrades, and Workforce Expectations Working with Condominium Owners and Associations Transitioning to a Utility Funded

  13. Los Alamos develops new technique for growing high-efficiency...

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

    technique for growing high-efficiency perovskite ... growth of highly efficient and reproducible solar cells from large-area ... clean global energy solutions for the ...

  14. COLLOQUIUM: Are Mushrooms the Next Polymers?: Growing Plastic...

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

    COLLOQUIUM: Are Mushrooms the Next Polymers?: Growing Plastic Replacements with Fungi Mr. Gavin McIntyre Ecovative Design LLC Colloquium Committee: The Princeton Plasma...

  15. Training Veterans to Work in the Rapidly Growing Solar Industry |

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

    Department of Energy Training Veterans to Work in the Rapidly Growing Solar Industry Training Veterans to Work in the Rapidly Growing Solar Industry June 26, 2015 - 12:40pm Addthis Training Veterans to Work in the Rapidly Growing Solar Industry Minh Le Minh Le Deputy Director, Solar Energy Technologies Office As the cost of solar energy continues to drop, it could become one of the cheapest electricity sources by 2030-and the solar job market will continue to flourish. In 2014, one out of

  16. Learn How To Grow Your Business Through Government Contracting

    Broader source: Energy.gov [DOE]

    OPEN for Government Contracts presents: Summit for Success is a FREE event hosted by American Express OPEN. The "Grow Your Business Through Government Contracting” events are FREE, day-long events focusing on small business government contracting.

  17. Y-12 grows and expands in the 1950s

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

    grows and expands in the 1950's The Alloy Development Program that Harold Cofer and others supported from a maintenance standpoint was one of the key programs in Y-12. The COLEX...

  18. World oil inventories forecast to grow significantly in 2016...

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

    World oil inventories forecast to grow significantly in 2016 and 2017 Global oil inventories are expected to continue strong growth over the next two years which should keep oil ...

  19. Fact #567: April 20, 2009 Cars are Growing Older

    Broader source: Energy.gov [DOE]

    The median age of cars continues to grow in 2008 while the median age of light trucks has remained fairly constant over the last ten years. The average age for all trucks, which includes heavy...

  20. A volunteer opportunity that'll grow on you

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

    A Volunteer Opportunity That'll Grow on You Community Connections: Your link to news and opportunities from Los Alamos National Laboratory Latest Issue: Dec. 2015-Jan. 2016 all...

  1. Biomass 2014: Growing the Future Bioeconomy | Department of Energy

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

    Events » Conferences » Biomass 2014: Growing the Future Bioeconomy Biomass 2014: Growing the Future Bioeconomy Bioenergy: America's Energy Future is a short documentary film showcasing examples of bioenergy innovations across the biomass supply chain and the United States. The film highlights a few stories of individuals and companies who are passionate about achieving the promise of biofuels and addressing the challenges of developing a thriving bioeconomy. This outreach product supports

  2. About the Bioenergy Technologies Office: Growing America's Energy Future |

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

    Department of Energy About the Bioenergy Technologies Office: Growing America's Energy Future About the Bioenergy Technologies Office: Growing America's Energy Future The U.S. Department of Energy's Bioenergy Technologies Office (BETO) establishes partnerships with key public and private stakeholders to develop and demonstrate technologies for producing cost-competitive advanced biofuels from non-food biomass resources, including cellulosic biomass, algae, and wet waste (e.g. biosolids).

  3. Inductance due to spin current

    SciTech Connect (OSTI)

    Chen, Wei

    2014-03-21

    The inductance of spintronic devices that transport charge neutral spin currents is discussed. It is known that in a media that contains charge neutral spins, a time-varying electric field induces a spin current. We show that since the spin current itself produces an electric field, this implies existence of inductance and electromotive force when the spin current changes with time. The relations between the electromotive force and the corresponding flux, which is a vector calculated by the cross product of electric field and the trajectory of the device, are clarified. The relativistic origin generally renders an extremely small inductance, which indicates the advantage of spin current in building low inductance devices. The same argument also explains the inductance due to electric dipole current and applies to physical dipoles consist of polarized bound charges.

  4. Berkeley Lab Scientists Grow Atomically Thin Transistors and Circuits |

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

    Department of Energy Berkeley Lab Scientists Grow Atomically Thin Transistors and Circuits Berkeley Lab Scientists Grow Atomically Thin Transistors and Circuits July 12, 2016 - 10:29am Addthis This schematic shows the chemical assembly of two-dimensional crystals. Graphene is first etched into channels and the TMDC molybdenum disulfide (MoS2) begins to nucleate around the edges and within the channel. On the edges, MoS2 slightly overlaps on top of the graphene. Finally, further growth

  5. Better Buildings Challenge Continues to Grow | Department of Energy

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

    Continues to Grow Better Buildings Challenge Continues to Grow June 18, 2012 - 9:49am Addthis Heather Zichal, Deputy Assistant to the President for Energy and Climate Change, at the 23rd Annual Energy Efficiency Forum in Washington, D.C. | Photo courtesy of the Energy Efficiency Forum. Heather Zichal, Deputy Assistant to the President for Energy and Climate Change, at the 23rd Annual Energy Efficiency Forum in Washington, D.C. | Photo courtesy of the Energy Efficiency Forum. Maria Tikoff Vargas

  6. Biomass 2014: Growing the Future Bioeconomy Agenda | Department of Energy

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

    Biomass 2014: Growing the Future Bioeconomy Agenda Biomass 2014: Growing the Future Bioeconomy Agenda Tuesday, July 29, 2014 7:00 a.m.-8:00 a.m. Breakfast and Registration 8:00 a.m.-8:20 a.m. Welcome and Introduction Jonathan Male, Director, Bioenergy Technologies Office, U.S. Department of Energy 8:20 a.m.-9:00 a.m. Morning Keynotes David Danielson, Assistant Secretary for Energy Efficiency & Renewable Energy, U.S. Department of Energy Byron Paez, Deputy Director for Deputy Assistant

  7. Land Management Practices More Critical as Biofuels Use Grows

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

    Land Management Practices More Critical as Biofuels Use Grows Land Management Practices More Critical as Biofuels Use Grows Climate Simulations Run at NERSC Show Cultivation Causes Carbon Loss in Soil August 3, 2015 Angela Hardin, (630) 252-5501, media@anl.gov LandManagement (a) Total SOC simulated by CLM-Crop over the contiguous United States. (b) Total SOC from the IGBP over the same domain as in (a). (c) Percent difference between (a) and (b). The handling of agricultural crop residues

  8. Precursor detonation wave development in ANFO due to aluminum confinement

    SciTech Connect (OSTI)

    Jackson, Scott I; Klyanda, Charles B; Short, Mark

    2010-01-01

    Detonations in explosive mixtures of ammonium-nitrate-fuel-oil (ANFO) confined by aluminum allow for transport of detonation energy ahead of the detonation front due to the aluminum sound speed exceeding the detonation velocity. The net effect of this energy transport on the detonation is unclear. It could enhance the detonation by precompressing the explosive near the wall. Alternatively, it could decrease the explosive performance by crushing porosity required for initiation by shock compression or destroying confinement ahead of the detonation. At present, these phenomena are not well understood. But with slowly detonating, non-ideal high explosive (NIHE) systems becoming increasing prevalent, proper understanding and prediction of the performance of these metal-confined NIHE systems is desirable. Experiments are discussed that measured the effect of this ANFO detonation energy transported upstream of the front by a 76-mm-inner-diameter aluminum confining tube. Detonation velocity, detonation-front shape, and aluminum response are recorded as a function of confiner wall thickness and length. Detonation shape profiles display little curvature near the confining surface, which is attributed to energy transported upstream modifying the flow. Average detonation velocities were seen to increase with increasing confiner thickness, while wavefront curvature decreased due to the stiffer, subsonic confinement. Significant radial sidewall tube motion was observed immediately ahead of the detonation. Axial motion was also detected, which interfered with the front shape measurements in some cases. It was concluded that the confiner was able to transport energy ahead of the detonation and that this transport has a definite effect on the detonation by modifying its characteristic shape.

  9. Growing and Sustaining Communities with Bioenergy- Text-Alt Version

    Broader source: Energy.gov [DOE]

    From Vero Beach, Florida, to Hugoton, Kansas, to Emmetsburg, Iowa, cellulosic ethanol biorefineries have had major impacts on communities and their residents. In other areas, bioenergy has significant potential to transform current and establish new industry. This short video illustrates how biorefineries and other bioenergy developments can benefit citizens, businesses, and whole communities, helping America’s rural economies grow and thrive.

  10. Greater fuel diversity needed to meet growing US electricity demand

    SciTech Connect (OSTI)

    Burt, B.; Mullins, S.

    2008-01-15

    Electricity demand is growing in the USA. One way to manage the uncertainty is to diversity fuel sources. Fuel sources include coal, natural gas, nuclear and renewable energy sources. Tables show actual and planned generation projects by fuel types. 1 fig., 2 tabs.

  11. Growing America's Energy Future: Bioenergy Technologies Office Successes

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

    of 2014 | Department of Energy America's Energy Future: Bioenergy Technologies Office Successes of 2014 Growing America's Energy Future: Bioenergy Technologies Office Successes of 2014 The Bioenergy Technologies Office (BETO) forms cost-share public-private partnerships to help sustainably develop cost-competitive biofuels and bioproducts in the United States from non-food biomass resources. accomplishments_two_pager_2014.pdf (194.5 KB) More Documents & Publications Bioenergy

  12. Growing America's Energy Future: Bioenergy Technologies Office Successes of 2014

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

    POET-DSM's Project LIBERTY cellulosic ethanol biorefinery in Emmetsburg, Iowa, was made possible with $100 million in BETO cost-shared funding. Photo courtesy POET-DSM. Growing America's Energy Future: Bioenergy Technologies Office Successes of 2014 The Bioenergy Technologies Office (BETO) forms cost-share public-private partnerships to help sustainably develop cost- competitive biofuels and bioproducts in the United States from non-food biomass resources. The potential exists to sustainably

  13. One Direction: Researchers grow nanocircuitry with semiconducting graphene

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

    nanoribbons | Argonne National Laboratory Contact Us For more information, contact Justin H.S. Breaux at (630) 252-5823 or media@anl.gov. Connect Find an Argonne expert by subject. Follow Argonne on Twitter, Facebook, Google+ and LinkedIn. For inquiries on commercializing Argonne technology or partnering with Argonne to solve your R&D or production challenges, contact partners@anl.gov. One Direction: Researchers grow nanocircuitry with semiconducting graphene nanoribbons By Justin H.S.

  14. Sunflower power: grow your fuel to produce your food

    SciTech Connect (OSTI)

    Bruwer, J.J.

    1980-10-01

    The use of sunflower seed oil as a substitute for or extender of tractor diesel fuel is being considered by South Africa. South Afric already grows 500,000 hectares of sunflowers and even on marginal soil unsuitable for cereal grains such as maize and wheat, the crop yields well. Preliminary tests showed that most diesel engines started and operated almost normally on 100% sunflower seed oil.

  15. Process for growing silicon carbide whiskers by undercooling

    DOE Patents [OSTI]

    Shalek, P.D.

    1987-10-27

    A method of growing silicon carbide whiskers, especially in the [beta] form, is disclosed using a heating schedule wherein the temperature of the atmosphere in the growth zone of a furnace is first heated to or beyond the growth temperature and then is cooled to or below the growth temperature to induce nucleation of whiskers at catalyst sites at a desired point in time which results in the selection. 3 figs.

  16. Process for growing silicon carbide whiskers by undercooling

    DOE Patents [OSTI]

    Shalek, Peter D. (Los Alamos, NM)

    1987-01-01

    A method of growing silicon carbide whiskers, especially in the .beta. form, using a heating schedule wherein the temperature of the atmosphere in the growth zone of a furnace is first heated to or beyond the growth temperature and then is cooled to or below the growth temperature to induce nucleation of whiskers at catalyst sites at a desired point in time which results in the selection.

  17. Forecasting municipal solid waste generation in a fast-growing urban region with system dynamics modeling

    SciTech Connect (OSTI)

    Dyson, Brian; Chang, N.-B. . E-mail: nchang@even.tamuk.edu

    2005-07-01

    Both planning and design of municipal solid waste management systems require accurate prediction of solid waste generation. Yet achieving the anticipated prediction accuracy with regard to the generation trends facing many fast-growing regions is quite challenging. The lack of complete historical records of solid waste quantity and quality due to insufficient budget and unavailable management capacity has resulted in a situation that makes the long-term system planning and/or short-term expansion programs intangible. To effectively handle these problems based on limited data samples, a new analytical approach capable of addressing socioeconomic and environmental situations must be developed and applied for fulfilling the prediction analysis of solid waste generation with reasonable accuracy. This study presents a new approach - system dynamics modeling - for the prediction of solid waste generation in a fast-growing urban area based on a set of limited samples. To address the impact on sustainable development city wide, the practical implementation was assessed by a case study in the city of San Antonio, Texas (USA). This area is becoming one of the fastest-growing regions in North America due to the economic impact of the North American Free Trade Agreement (NAFTA). The analysis presents various trends of solid waste generation associated with five different solid waste generation models using a system dynamics simulation tool - Stella[reg]. Research findings clearly indicate that such a new forecasting approach may cover a variety of possible causative models and track inevitable uncertainties down when traditional statistical least-squares regression methods are unable to handle such issues.

  18. 2012 NERSC allocation requests due September 23

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

    2 NERSC allocation requests due September 23 2012 NERSC allocation requests due September 23 August 17, 2011 by Francesca Verdier The ERCAP allocation submission system is now open...

  19. 2015 NERSC allocation requests due September 22

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

    requests due September 22 2015 NERSC allocation requests due September 22 August 13, 2014 by Francesca Verdier The NERSC allocation submission system is now open for 2015 requests. ...

  20. Geek-Up[10.15.2010]: Growing Nanoparticles, Developing Plastic...

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

    15.2010: Growing Nanoparticles, Developing Plastic from Bacteria and Wireless Water Heaters Geek-Up10.15.2010: Growing Nanoparticles, Developing Plastic from Bacteria and ...

  1. Apparatus for growing HgI.sub.2 crystals

    DOE Patents [OSTI]

    Schieber, Michael M.; Beinglass, Israel; Dishon, Giora

    1978-01-01

    A method and horizontal furnace for vapor phase growth of HgI.sub.2 crystals which utilizes controlled axial and radial airflow to maintain the desired temperature gradients. The ampoule containing the source material is rotated while axial and radial air tubes are moved in opposite directions during crystal growth to maintain a desired distance and associated temperature gradient with respect to the growing crystal, whereby the crystal interface can advance in all directions, i.e., radial and axial according to the crystallographic structure of the crystal. Crystals grown by this method are particularly applicable for use as room-temperature nuclear radiation detectors.

  2. ESnet's Fasterdata Site Growing in Scope, Popularity in Increasingly

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

    Data-Driven World ESnet's Fasterdata Site Growing in Scope, Popularity in Increasingly Data-Driven World News & Publications ESnet News Media & Press Publications and Presentations Galleries ESnet Awards and Honors Contact Us Media Jon Bashor, jbashor@lbl.gov, +1 510 486 5849 or Media@es.net Technical Assistance: 1 800-33-ESnet (Inside the US) 1 800-333-7638 (Inside the US) 1 510-486-7600 (Globally) 1 510-486-7607 (Globally) Report Network Problems: trouble@es.net Provide Web Site

  3. Process for growing epitaxial gallium nitride and composite wafers

    DOE Patents [OSTI]

    Weber, Eicke R.; Subramanya, Sudhir G.; Kim, Yihwan; Kruger, Joachim

    2003-05-13

    A novel growth procedure to grow epitaxial Group III metal nitride thin films on lattice-mismatched substrates is proposed. Demonstrated are the quality improvement of epitaxial GaN layers using a pure metallic Ga buffer layer on c-plane sapphire substrate. X-ray rocking curve results indicate that the layers had excellent structural properties. The electron Hall mobility increases to an outstandingly high value of .mu.>400 cm.sup.2 /Vs for an electron background concentration of 4.times.10.sup.17 cm.sup.-3.

  4. Idaho Cleanup Project grows its workforce to complete ARRA work

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

    Idaho Cleanup Project grows its workforce to complete ARRA work CWI President and CEO John Fulton greets newly hired ICP employees at a June orientation session in Idaho Falls. Over a hundred new faces have already joined the Idaho Cleanup Project (ICP) workforce, both in offices and at work sites across DOE's Idaho Site. The ICP is ramping up its workforce to complete new work scope assigned to the ICP under the American Recovery and Reinvestment Act (ARRA). As of June 27, 143 new workers have

  5. Far East LPG sales will grow faster than in West

    SciTech Connect (OSTI)

    1996-12-30

    LPG sales through 2010 in regions east of the Suez Canal (East of Suez) will grow at more than twice those in regions west of the canal. East-of-Suez sales will grow at more than 4.0%/year, compared to slightly less than 2.0%/year growth in sales West of Suez. East-of-Suez sales will reach 92 million tons/year (tpy) by 2010, accounting for 39% of the worldwide total. This share was 31% in1995 and only 27% in 1990. LPG sales worldwide will reach 192 million tons in 2000 and 243 million tpy by 2010. In 1995, they were 163 million tons. These are some of the major conclusions of a recent study by Frank R. Spadine, Christine Kozar, and Rudy Clark of New York City-based consultant Poten and Partners Inc. Details of the study are in the fall report ``World Trade in LPG 1990--2010``. This paper discusses demand segments, seaborne balance, Western sources, largest trading region, North American supplies, and other supplies.

  6. China's growing CO{sub 2} emissions - a race between increasing consumption and efficiency gains

    SciTech Connect (OSTI)

    Glen P. Peters; Christopher L. Weber; Dabo Guan; Klaus Hubacek

    2007-09-15

    China's rapidly growing economy and energy consumption are creating serious environmental problems on both local and global scales. Understanding the key drivers behind China's growing energy consumption and the associated CO{sub 2} emissions is critical for the development of global climate policies and provides insight into how other emerging economies may develop a low emissions future. Using recently released Chinese economic input-output data and structural decomposition analysis we analyze how changes in China's technology, economic structure, urbanization, and lifestyles affect CO{sub 2} emissions. We find that infrastructure construction and urban household consumption, both in turn driven by urbanization and lifestyle changes, have outpaced efficiency improvements in the growth of CO{sub 2} emissions. Net trade had a small effect on total emissions due to equal, but significant, growth in emissions from the production of exports and emissions avoided by imports. Technology and efficiency improvements have only partially offset consumption growth, but there remains considerable untapped potential to reduce emissions by improving both production and consumption systems. As China continues to rapidly develop there is an opportunity to further implement and extend policies, such as the Circular Economy, that will help China avoid the high emissions path taken by today's developed countries. 65 refs., 3 figs., 1 tab.

  7. The three-dimensional morphology of growing dendrites

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

    Gibbs, J. W.; Mohan, K. A.; Gulsoy, E. B.; Shahani, A. J.; Xiao, X.; Bouman, C. A.; De Graef, M.; Voorhees, P. W.

    2015-07-03

    The processes controlling the morphology of dendrites have been of great interest to a wide range of communities, since they are examples of an out-of-equilibrium pattern forming system, there is a clear connection with battery failure processes, and their morphology sets the properties of many metallic alloys. We determine the three-dimensional morphology of free growing metallic dendrites using a novel X-ray tomographic technique that improves the temporal resolution by more than an order of magnitude compared to conventional techniques. These measurements show that the growth morphology of metallic dendrites is surprisingly different from that seen in model systems, the morphologymore » is not self-similar with distance back from the tip, and that this morphology can have an unexpectedly strong influence on solute segregation in castings. These experiments also provide benchmark data that can be used to validate simulations of free dendritic growth.« less

  8. Fast-growing willow shrub named `Tully Champion`

    DOE Patents [OSTI]

    Abrahamson, Lawrence P.; Kopp, Richard F.; Smart, Lawrence B.; Volk, Timothy A.

    2007-08-28

    A distinct female cultivar of Salix viminalis.times.S. miyabeana named `Tully Champion`, characterized by rapid stem growth producing greater than 25% more woody biomass than two current production clones (Salix dasyclados `SV1` and Salix miyabeana `SX64`), more than 2.5-fold greater biomass than one of its parents (Salix miyabeana `SX67`), and nearly 3-fold more biomass than another production clone (Salix sacchalinensis, `SX61`) when grown in the same field for the same length of time (two growing seasons after coppice) in Tully, N.Y. `Tully Champion` can be planted from dormant stem cuttings, produces multiple stems after coppice, and the stem biomass can be harvested when the plant is dormant. In the spring following harvest, the plant will re-sprout very vigorously, producing new stems that can be harvested repeatedly after two to four years of growth. `Tully Champion` displays a low incidence of rust disease and is not damaged by potato leafhoppers.

  9. The three-dimensional morphology of growing dendrites

    SciTech Connect (OSTI)

    Gibbs, J. W.; Mohan, K. A.; Gulsoy, E. B.; Shahani, A. J.; Xiao, X.; Bouman, C. A.; De Graef, M.; Voorhees, P. W.

    2015-07-03

    The processes controlling the morphology of dendrites have been of great interest to a wide range of communities, since they are examples of an out-of-equilibrium pattern forming system, there is a clear connection with battery failure processes, and their morphology sets the properties of many metallic alloys. We determine the three-dimensional morphology of free growing metallic dendrites using a novel X-ray tomographic technique that improves the temporal resolution by more than an order of magnitude compared to conventional techniques. These measurements show that the growth morphology of metallic dendrites is surprisingly different from that seen in model systems, the morphology is not self-similar with distance back from the tip, and that this morphology can have an unexpectedly strong influence on solute segregation in castings. These experiments also provide benchmark data that can be used to validate simulations of free dendritic growth.

  10. Interest grows in African oil and gas opportunities

    SciTech Connect (OSTI)

    Knott, D.

    1997-05-12

    As African countries continue a slow drift towards democratic government and market economics, the continent is increasingly attractive to international oil and gas companies. Though Africa remains politically diverse, and its volatile politics remains a major barrier to petroleum companies, a number of recent developments reflect its growing significance for the industry. Among recent projects and events reflecting changes in Africa: oil and gas exporter Algeria has invited foreign oil companies to help develop major gas discoveries, with a view to boosting exports to Europe; oil and gas producer Egypt invited foreign companies to explore in the Nile Delta region, and the result appears to be a flowering world scale gas play; west African offshore exploration has entered deep water and new areas, and a number of major projects are expected in years to come; Nigeria`s reputation as a difficult place to operate has been justified by recent political and civil events, but a long-planned liquefied natural gas (LNG) export plant is being built there; South Africa, which has returned to the international scene after years of trade isolation because of apartheid, is emerging as a potential driver for energy industry schemes throughout the continent. Activities are discussed.

  11. U. S. oil spill law to cause growing tanker problem

    SciTech Connect (OSTI)

    Price, R.B.

    1991-09-30

    This paper reports on tanker owners which face a growing dilemma on the issue of oil spill liability. The U.S. Oil Pollution Act, passed last year in the wake of the March 1989 Exxon Valdez oil spill, was intended to reduce risk of and damage from such accidents. However, in addition to phasing in double hulls on most tankers operating in U.S. waters, the law substantially increases shipowner's liability for spills. And the federal law does not preempt state liability laws, which in most cases amount to unlimited liability for spill cleanup. Rather than face potentially unlimited liability in the event of a spill, tanker owners worldwide are exercising a number of options to shield themselves. Some of those options could increase the potential for oil spills, industry officials warn. The act also threatens to shatter the international alliance among shippers. A report by Drewry Shipping Consultants Ltd., London, says the law could have a devastating effect on operating practices. Tanker owners and operators have voiced the most opposition to the new spill law and the shackles it places on them. Now the industry that insures tankers has spoken up about is increased liability, and it too may launch a boycott.

  12. Soviet Union oil sector outlook grows bleaker still

    SciTech Connect (OSTI)

    Not Available

    1991-08-12

    This paper reports on the outlook for the U.S.S.R's oil sector which grows increasingly bleak and with it prospects for the Soviet economy. Plunging Soviet oil production and exports have analysts revising near term oil price outlooks, referring to the Soviet oil sector's self-destructing and Soviet oil production in a freefall. County NatWest, Washington, citing likely drops in Soviet oil production and exports (OGJ, Aug. 5, p. 16), has jumped its projected second half spot price for West Texas intermediate crude by about $2 to $22-23/bbl. Smith Barney, New York, forecasts WTI postings at $24-25/bbl this winter, largely because of seasonally strong world oil demand and the continued collapse in Soviet oil production. It estimates the call on oil from the Organization of Petroleum Exporting Countries at more than 25 million b/d in first quarter 1992. That would be the highest level of demand for OPEC oil since 1980, Smith Barney noted.

  13. Growing Brazilian demand to spur gas network in South America

    SciTech Connect (OSTI)

    Deffarges, E.H. ); Maurer, L.I.A. )

    1993-01-18

    A recent combination in South America of economic and geopolitical factors is prompting development of a new integrated gas-pipeline network in the continent's Southern Cone. The crucial factors include privatization, regional integration, economic growth, and environmental concerns. The area, Latin America's largest regional entity, includes Brazil (population 150 million and a 1990 GNP of about $375 billion, 9th largest in the world), Argentina (population 32 million and the third largest Latin American economy after Brazil and Mexico), Bolivia, Chile, Paraguay, and Uruguay. Argentina, Brazil, Paraguay, and Uruguay are members of the MercoSur economic bloc whose objective is to develop free trade in the region. There are very few integrated pipeline networks in the world. Besides the giant North American system, with hundreds of producers and pipelines, there is only one other large integrated network. It connects continental European countries to their outside suppliers such as Norway, the C.I.S., and Algeria. The emergence of a new pipeline system is therefore important for the natural-gas industry worldwide and even more so if it occurs in a region now growing rapidly after a decade of economic difficulties.

  14. EIA: High Oil Prices, GHG Controls Would Help Clean Energy Grow...

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

    EIA: High Oil Prices, GHG Controls Would Help Clean Energy Grow EIA: High Oil Prices, GHG Controls Would Help Clean Energy Grow April 1, 2009 - 11:35am Addthis The growth of...

  15. Neustar White Paper: When Smart Grids Grow Smart Enough to Solve...

    Energy Savers [EERE]

    Neustar White Paper: When Smart Grids Grow Smart Enough to Solve Crimes Neustar White Paper: When Smart Grids Grow Smart Enough to Solve Crimes Smart Grid data access PDF icon ...

  16. Partnering with Utilities and Other Program Administrators to Sustain and Grow Your Energy Efficiency Initiatives

    Broader source: Energy.gov [DOE]

    This presentation contains information on Partnering with Utilities and Other Program Administrators to Sustain and Grow Your Energy Efficiency Initiatives.

  17. Photo of the Week: How to Grow Superconducting Crystals | Department of

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

    Energy How to Grow Superconducting Crystals Photo of the Week: How to Grow Superconducting Crystals September 13, 2013 - 11:29am Addthis Many of the materials that scientists work with at Brookhaven National Laboratory are too small and too precise for traditional tools. In cases like these, the labs grow materials instead of building them. Brookhaven physicist Genda Gu pioneered techniques that grow some of the largest single-crystal high-temperature superconductors in the world. The

  18. Growing Crystaline Sapphire Fibers By Laser Heated Pedestal Techiques

    DOE Patents [OSTI]

    Phomsakha, Vongvilay; Chang, Robert S. F.; Djeu, Nicholas I.

    1997-03-04

    An improved system and process for growing crystal fibers comprising a means for creating a laser beam having a substantially constant intensity profile through its cross sectional area, means for directing the laser beam at a portion of solid feed material located within a fiber growth chamber to form molten feed material, means to support a seed fiber above the molten feed material, means to translate the seed fiber towards and away from the molten feed material so that the seed fiber can make contact with the molten feed material, fuse to the molten feed material and then be withdrawn away from the molten feed material whereby the molten feed material is drawn off in the form of a crystal fiber. The means for creating a laser beam having a substantially constant intensity profile through its cross sectional area includes transforming a previously generated laser beam having a conventional gaussian intensity profile through its cross sectional area into a laser beam having a substantially constant intensity profile through its cross sectional area by passing the previously generated laser beam through a graded reflectivity mirror. The means for directing the laser beam at a portion of solid feed material is configured to direct the laser beam at a target zone which contains the molten feed material and a portion of crystal fiber drawn off the molten feed material by the seed fiber. The means to support the seed fiber above the molten feed material is positioned at a predetermined height above the molten feed material. This predetermined height provides the seed fiber with sufficient length and sufficient resiliency so that surface tension in the molten feed material can move the seed fiber to the center of the molten feed material irrespective of where the seed fiber makes contact with the molten feed material. The internal atmosphere of the fiber growth chamber is composed substantially of Helium gas.

  19. 2014 DOE ALCC Proposals Due February 3

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

    ALCC Proposals Due February 3, 2014 2014 DOE ALCC Proposals Due February 3 December 23, 2013 by Francesca Verdier DOE's 2014 call for its ASCR Leadership Computing Challenge (ALCC) competition is posted: http://science.energy.gov/ascr/facilities/alcc/. There are new guidelines this year: http://science.energy.gov/ascr/facilities/alcc/alcc-application-details/. Proposals for 2014 ALCC are due 11:59 PM EST February 3rd, 2014. Email your completed proposal to ALCC@science.doe.gov. PDF format is

  20. 2014 DOE ALCC Proposals Due February 3

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

    There are new guidelines this year: http:science.energy.govascrfacilitiesalccalcc-application-details. Proposals for 2014 ALCC are due 11:59 PM EST February 3rd, 2014. Email ...

  1. Fourth Friday Cancelled due to Thanksgiving Holidays

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

    open late until 6:00 PM offering access to exhibits and special activities for all ages, however it will not take place on Friday, November 27 due to the Thanksgiving...

  2. Visualization Contest Applications due August 3

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

    Contest Applications due August 3 June 22, 2012 by Francesca Verdier In support of the IEEE Symposium on Large-Scale Data Analysis and Visualization (LDAV) 2012's visualization...

  3. Visualization Contest Applications due August 3

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

    Visualization Contest Applications due August 3 Visualization Contest Applications due August 3 June 22, 2012 by Francesca Verdier In support of the IEEE Symposium on Large-Scale Data Analysis and Visualization (LDAV) 2012's visualization contest, LDAV organizers are offering compute time to participants through a NERSC allocation awarded by ASCR. The LDAV Visualization Contest focuses on the area of visualization of extremely large datasets. The goal is to devise a visualization or a

  4. Applications for ACTS Workshop Due June 24

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

    for ACTS Workshop Due June 24 Applications for ACTS Workshop Due June 24 June 1, 2012 by Francesca Verdier The 13th Workshop on the DOE Advanced Computational Software (ACTS) Collection, Scalable and Robust Computational Libraries and Tools for High-End Computing, will be held in Berkeley, CA, on August 14-17, 2012.ide range of applications and fields in computational sciences. The four-day workshop will include tutorials on the tools currently available in the collection, discussion sessions to

  5. 2012 NERSC allocation requests due September 23

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

    2 NERSC allocation requests due September 23 2012 NERSC allocation requests due September 23 August 17, 2011 by Francesca Verdier The ERCAP allocation submission system is now open for 2012 NERSC allocation requests. All current projects (including startup, education, and ALCC projects) must be renewed for 2012 if you wish to continue using NERSC. New project requests may be submitted as well (for either the remainder of 2011 or for 2012). The deadline for 2012 requests is September 23, 2011.

  6. 2013 Allocation Request Submissions Due September 28

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

    3 Allocation Request Submissions Due September 28 2013 Allocation Request Submissions Due September 28 August 1, 2012 by Francesca Verdier The deadline for submissions for 2013 NERSC allocation requests is September 28 at 11:59 p.m. PDT. All current 2012 NERSC projects (including startup, education, ALCC, NISE and Data Intensive Pilot projects) must be renewed for 2013 in order to continue using NERSC. Award decisions for requests submitted before this deadline will be emailed to Principal

  7. 2013 INCITE Proposals due June 27

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

    INCITE Proposals 2013 INCITE Proposals due June 27 June 15, 2012 by Francesca Verdier The Innovative and Novel Computational Impact on Theory and Experiment (INCITE) program promotes transformational advances in science and technology through large allocations of computer time, supporting resources, and data storage at the Argonne and Oak Ridge Leadership Computing Facilities. 2013 proposals are due June 27. See 2013 INCITE Call for Proposals. Subscribe via RSS Subscribe Browse by Date August

  8. 2014 NERSC allocation requests due September 22

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

    allocation requests due September 22 2014 NERSC allocation requests due September 22 August 13, 2013 by Francesca Verdier NERSC's allocation submission system is now open for 2014 allocation requests. All current projects (including startup, education, and ALCC projects) must be renewed for 2014 if you wish to continue using NERSC. New project requests may be submitted as well (for either the remainder of 2013 or for 2014). The deadline for 2014 requests is 23:59 PM September 22, 2013. Award

  9. Oil companies turn cannibalistic as profits grow but reserves shrink

    SciTech Connect (OSTI)

    Corrigan, R.

    1982-01-02

    Oil company mergers, sales of storage capacity, and slow sales reveal a decline in reserves and a loss of revenues despite the large revenues and profits due to deregulation. Mobil's bid for Marathon Oil and Conoco illustrate the rush for upstream crude-oil supplies. The takeover activity includes small and large companies alike in both the domestic and international markets. Stock-market analysts rate oil companies that are buying secure proven reserves as a good investment. The administration sees no antitrust problem in the mergers, although horizontal mergers receive close scrutiny. Congressional response has been only mildly critical of the oil companies, but a moratorium bill on future mergers could pass in 1982. (DCK)

  10. Renewable Energy Loan Applications Due Today!

    Broader source: Energy.gov [DOE]

    If you haven't submitted your Part I application for Department of Energy Loan Guarantee Program’s Renewables Solicitation yet, today is your last day! Round 8, Part I applications for DOE's Energy Efficiency, Renewable Energy and Advanced Transmission and Distribution Technologies Solicitation (2009) are due today by midnight EDT.

  11. Join Secretary Chu Tomorrow for a Google+ Hangout on America's Growing

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

    Solar Industry | Department of Energy Secretary Chu Tomorrow for a Google+ Hangout on America's Growing Solar Industry Join Secretary Chu Tomorrow for a Google+ Hangout on America's Growing Solar Industry February 21, 2013 - 3:06pm Addthis Join Secretary Chu Tomorrow for a Google+ Hangout on America's Growing Solar Industry Niketa Kumar Niketa Kumar Public Affairs Specialist, Office of Public Affairs How can I participate? Sign up at the Google+ Event page. Email questions to

  12. Spring Forward: Top Strategies for Growing and Scaling Your Program (301)

    Broader source: Energy.gov [DOE]

    Better Buildings Residential Network Peer Exchange Call Series: Spring Forward: Top Strategies for Growing and Scaling Your Program (301), call slides and discussion summary.

  13. Partnering with Utilities and Other Program Administrators to Sustain-Grow Your Energy Efficiency Initiatives

    Broader source: Energy.gov [DOE]

    This document contains the transcript for the Partnering with Utilities and Other Program Administrators to Sustain and Grow Your Energy Efficiency Initiatives webinar held on May 8, 2013.

  14. Constrained inflaton due to a complex scalar

    SciTech Connect (OSTI)

    Budhi, Romy H. S.; Kashiwase, Shoichi; Suematsu, Daijiro

    2015-09-14

    We reexamine inflation due to a constrained inflaton in the model of a complex scalar. Inflaton evolves along a spiral-like valley of special scalar potential in the scalar field space just like single field inflation. Sub-Planckian inflaton can induce sufficient e-foldings because of a long slow-roll path. In a special limit, the scalar spectral index and the tensor-to-scalar ratio has equivalent expressions to the inflation with monomial potential φ{sup n}. The favorable values for them could be obtained by varying parameters in the potential. This model could be embedded in a certain radiative neutrino mass model.

  15. Hanfords Contamination Expected to Grow From Unacceptable Levels Today to Incredibly Unacceptable Levels in One Hundred Years and Over Thousands of Years

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

    Contamination Expected to Grow From Unacceptable Levels Today to Incredibly Unacceptable Levels in One Hundred Years and Thousands of Years... 10x Worse if USDOE uses Hanford as a National Radioactive Waste Dump Source: USDOE's Own TCWMEIS (Tank Closure Waste Management Draft EIS) Presented by Heart of America Northwest 2010 TCWMEIS - Tank Closure Waste Management Environmental Impact Statement * TCWMEIS was required due to legal and scientific errors in the 2004 Hanford Site Solid Waste EIS,

  16. Particle transport due to magnetic fluctuations

    SciTech Connect (OSTI)

    Stoneking, M.R.; Hokin, S.A.; Prager, S.C.; Fiksel, G.; Ji, H.; Den Hartog, D.J.

    1994-01-01

    Electron current fluctuations are measured with an electrostatic energy analyzer at the edge of the MST reversed-field pinch plasma. The radial flux of fast electrons (E>T{sub e}) due to parallel streaming along a fluctuating magnetic field is determined locally by measuring the correlated product <{tilde J}{sub e}{tilde B}{sub r}>. Particle transport is small just inside the last closed flux surface ({Gamma}{sub e,mag} < 0.1 {Gamma}{sub e,total}), but can account for all observed particle losses inside r/a=0.8. Electron diffusion is found to increase with parallel velocity, as expected for diffusion in a region of field stochasticity.

  17. GROW HOME

    Office of Energy Efficiency and Renewable Energy (EERE)

    Upstate Buffalo, New York, isn’t typically associated with gardens. More people probably envision Buffalo covered in the lake-effect snow of Lake Erie than in greenery. But the Solar Decathlon 2015...

  18. Fact #867: April 6, 2015 Car-Sharing and Ride-Summoning Are a Growing

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

    Phenomenon - Dataset | Department of Energy 7: April 6, 2015 Car-Sharing and Ride-Summoning Are a Growing Phenomenon - Dataset Fact #867: April 6, 2015 Car-Sharing and Ride-Summoning Are a Growing Phenomenon - Dataset Excel file and dataset for Car-Sharing and Ride-Summoning Are a Growing Phenomenon fotw#867_web.xlsx (21.33 KB) More Documents & Publications Fact #856 January 19, 2015 Plug-in and Hybrid Cars Receive High Scores for Owner Satisfaction - Dataset Fact #924: May 9, 1916

  19. Cell migration or cytokinesis and proliferation? Revisiting the go or grow hypothesis in cancer cells in vitro

    SciTech Connect (OSTI)

    Garay, Tams; Juhsz, va; Molnr, Eszter; Eisenbauer, Maria; Czirk, Andrs; Dekan, Barbara; Lszl, Viktria; Hoda, Mir Alireza; Dme, Balzs; Tmr, Jzsef; Klepetko, Walter; Berger, Walter; Heged?s, Balzs

    2013-12-10

    The mortality of patients with solid tumors is mostly due to metastasis that relies on the interplay between migration and proliferation. The go or grow hypothesis postulates that migration and proliferation spatiotemporally excludes each other. We evaluated this hypothesis on 35 cell lines (12 mesothelioma, 13 melanoma and 10 lung cancer) on both the individual cell and population levels. Following three-day-long videomicroscopy, migration, proliferation and cytokinesis-length were quantified. We found a significantly higher migration in mesothelioma cells compared to melanoma and lung cancer while tumor types did not differ in mean proliferation or duration of cytokinesis. Strikingly, we found in melanoma and lung cancer a significant positive correlation between mean proliferation and migration. Furthermore, non-dividing melanoma and lung cancer cells displayed slower migration. In contrast, in mesothelioma there were no such correlations. Interestingly, negative correlation was found between cytokinesis-length and migration in melanoma. FAK activation was higher in melanoma cells with high motility. We demonstrate that the cancer cells studied do not defer proliferation for migration. Of note, tumor cells from various organ systems may differently regulate migration and proliferation. Furthermore, our data is in line with the observation of pathologists that highly proliferative tumors are often highly invasive. - Highlights: We investigated the go or grow hypothesis in human cancer cells in vitro. Proliferation and migration positively correlate in melanoma and lung cancer cells. Duration of cytokinesis and migration shows inverse correlation. Increased FAK activation is present in highly motile melanoma cells.

  20. Alpha particles diffusion due to charge changes

    SciTech Connect (OSTI)

    Clauser, C. F. Farengo, R.

    2015-12-15

    Alpha particles diffusion due to charge changes in a magnetized plasma is studied. Analytical calculations and numerical simulations are employed to show that this process can be very important in the pedestal-edge-SOL regions. This is the first study that presents clear evidence of the importance of atomic processes on the diffusion of alpha particles. A simple 1D model that includes inelastic collisions with plasma species, “cold” neutrals, and partially ionized species was employed. The code, which follows the exact particle orbits and includes the effect of inelastic collisions via a Monte Carlo type random process, runs on a graphic processor unit (GPU). The analytical and numerical results show excellent agreement when a uniform background (plasma and cold species) is assumed. The simulations also show that the gradients in the density of the plasma and cold species, which are large and opposite in the edge region, produce an inward flux of alpha particles. Calculations of the alpha particles flux reaching the walls or divertor plates should include these processes.

  1. Cable twisting due to atmospheric icing

    SciTech Connect (OSTI)

    McComber, P.; Druez, J.; Savadjiev, K.

    1995-12-31

    Samples of ice accretions collected on cables of overhead transmission lines have shown evidence of twisting of the cable during atmospheric icing. Previous work has attributed cable twisting to the torque created by the weight of an eccentric ice shape and by wind forces. However, testing of stranded cables and conductors has shown that such cables also twist when there is a change in tension in the cable span. This phenomenon is related to the interaction of the different strand layers under tension. When a cable is subjected to atmospheric icing, cable tension increases and this type of twisting should also be considered. In order to determine how the two types of twisting would compare on transmission lines, a numerical simulation was made using characteristics of a typical 35-mm stranded conductor. The twist angle was computed as a function of cable span, sag to span ratio and increasing ice loads. The simulation shows that for transmission lines, twisting due to varying tension will be significant. Since cable tension is influenced by wind speed and ambient temperature as well as ice load, this phenomenon, unless prevented, results in ice accretion more circular in shape and hence eventually in larger ice loads.

  2. Science.gov: Still Strong, Growing in 10th Anniversary Year ...

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

    December 5, 2012 Science.gov: Still Strong, Growing in 10th Anniversary Year Washington, DC - Science.gov, known for its groundbreaking search and retrieval of government science ...

  3. Picture of the Week: Growing a greener future with algal biofuels

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

    5 Growing a greener future with algal biofuels At the New Mexico Consortium, Los Alamos scientists are using genetic engineering to improve algae strains for increased biomass yield and carbon capture efficiency. September 6, 2015 x x View larger version Growing a greener future with algal biofuels At the New Mexico Consortium, Los Alamos scientists are using genetic engineering to improve algae strains for increased biomass yield and carbon capture efficiency. Algal biomass can be converted to

  4. Better Buildings Challenge to Cut Energy Waste Grows by 1 Billion Square

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

    Feet | Department of Energy to Cut Energy Waste Grows by 1 Billion Square Feet Better Buildings Challenge to Cut Energy Waste Grows by 1 Billion Square Feet May 9, 2014 - 11:01am Addthis NEWS MEDIA CONTACT (202) 586-4940 WASHINGTON - Building on President Obama's Climate Action Plan and the Administration's Better Buildings Challenge, the Energy Department announced today that Better Buildings Challenge partners are on track to meet their energy performance goals in their second year, saving

  5. Energy Dept. Report Finds Major Potential to Grow Clean, Sustainable U.S.

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

    Hydropower | Department of Energy Dept. Report Finds Major Potential to Grow Clean, Sustainable U.S. Hydropower Energy Dept. Report Finds Major Potential to Grow Clean, Sustainable U.S. Hydropower April 29, 2014 - 9:15am Addthis News Media Contact (202) 586-4940 WASHINGTON - Building on the Obama Administration's commitment to an all-of-the-above energy strategy, the Energy Department and its Oak Ridge National Laboratory released a renewable energy resource assessment today detailing the

  6. Growing Graphene Ribbons in One Direction | U.S. DOE Office of Science (SC)

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

    Growing Graphene Ribbons in One Direction Basic Energy Sciences (BES) BES Home About Research Facilities Science Highlights Benefits of BES Funding Opportunities Basic Energy Sciences Advisory Committee (BESAC) Community Resources Contact Information Basic Energy Sciences U.S. Department of Energy SC-22/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-3081 F: (301) 903-6594 E: Email Us More Information » 06.07.16 Growing Graphene Ribbons in One Direction New

  7. Renewable Energy Data Book Details Growing Industry in 2012 | Department of

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

    Energy Renewable Energy Data Book Details Growing Industry in 2012 Renewable Energy Data Book Details Growing Industry in 2012 December 4, 2013 - 12:00am Addthis The National Renewable Energy Laboratory (NREL) on November 21 released the 2012 Renewable Energy Data Book on behalf of the Energy Department's Office of Energy Efficiency and Renewable Energy. The annual report is an important assessment of U.S. energy statistics for 2012, including renewable electricity, worldwide renewable

  8. Fact #580: July 20, 2009 Traffic Congestion Grows | Department of Energy

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

    0: July 20, 2009 Traffic Congestion Grows Fact #580: July 20, 2009 Traffic Congestion Grows According to the Texas Transportation Institute's latest study on traffic congestion, two of every three cars experienced congestion in their morning or evening trip in 2007. As expected, traffic congestion is worse in very large urban areas, but congestion has grown in small areas, too. The share of travel in congested conditions has more than doubled from 1982 to 2007 for each of the urban areas shown.

  9. Los Alamos develops new technique for growing high-efficiency perovskite

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

    solar cells Los Alamos develops new technique for growing high-efficiency perovskite solar cells Alumni Link: Opportunities, News and Resources for Former Employees Latest Issue:September 2015 all issues All Issues » submit Los Alamos develops new technique for growing high-efficiency perovskite solar cells Researchers reveal a new solution-based hot-casting technique that allows growth of highly efficient and reproducible solar cells from large-area perovskite crystals. March 1, 2015

  10. Los Alamos develops new technique for growing high-efficiency perovskite

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

    solar cells Growing high-efficiency perovskite solar cells Los Alamos develops new technique for growing high-efficiency perovskite solar cells Researchers reveal a new solution-based hot-casting technique that allows growth of highly efficient and reproducible solar cells from large-area perovskite crystals. January 29, 2015 Scientists Aditya Mohite, left, and Wanyi Nie are perfecting a crystal production technique to improve perovskite crystal production for solar cells at Los Alamos

  11. Adv. Fossil Solicitation Part I Due Date | Department of Energy

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

    Fossil Solicitation Part I Due Date Adv. Fossil Solicitation Part I Due Date January 13, 2016 12:01AM to 11:59PM EST ADVANCED FOSSIL ENERGY PROJECTS SOLICITATION PART I DUE DATE ...

  12. Adv. Nuclear Solicitation Part I Due Date | Department of Energy

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

    Nuclear Solicitation Part I Due Date Adv. Nuclear Solicitation Part I Due Date March 16, 2016 12:01AM to 11:59PM EDT ADVANCED NUCLEAR ENERGY PROJECTS SOLICITATION PART I DUE DATE ...

  13. REEE Solicitation Part I Due Date | Department of Energy

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

    I Due Date REEE Solicitation Part I Due Date November 30, 2016 1:01AM EST to December 1, 2016 12:59AM EST RENEWABLE ENERGY AND EFFICENT ENERGY PROJECTS SOLICITATION PART I DUE DATE

  14. REEE Solicitation Part II Due Date | Department of Energy

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

    II Due Date REEE Solicitation Part II Due Date November 30, 2016 1:01AM EST to December 1, 2016 12:59AM EST RENEWABLE ENERGY AND EFFICENT ENERGY PROJECTS SOLICITATION PART II DUE DATE

  15. REEE Solicitation Part II Due Date | Department of Energy

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

    REEE Solicitation Part II Due Date REEE Solicitation Part II Due Date April 13, 2016 12:01AM to 11:59PM EDT RENEWABLE ENERGY AND EFFICENT ENERGY PROJECTS SOLICITATION PART II DUE...

  16. REEE Solicitation Part I Due Date | Department of Energy

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

    I Due Date REEE Solicitation Part I Due Date March 16, 2016 12:01AM to 11:59PM EDT RENEWABLE ENERGY AND EFFICENT ENERGY PROJECTS SOLICITATION PART I DUE DATE...

  17. REEE Solicitation Part II Due Date | Department of Energy

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

    REEE Solicitation Part II Due Date REEE Solicitation Part II Due Date June 15, 2016 12:01AM to 11:59PM EDT RENEWABLE ENERGY AND EFFICENT ENERGY PROJECTS SOLICITATION PART II DUE...

  18. Adv. Fossil Solicitation Part I Due Date | Department of Energy

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

    Fossil Solicitation Part I Due Date Adv. Fossil Solicitation Part I Due Date March 16, 2016 12:01PM to 11:59PM EDT ADVANCED FOSSIL ENERGY PROJECTS SOLICITATION PART I DUE DATE...

  19. REEE Solicitation Part I Due Date | Department of Energy

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

    I Due Date REEE Solicitation Part I Due Date September 14, 2016 12:01AM to 11:59PM EDT RENEWABLE ENERGY AND EFFICENT ENERGY PROJECTS SOLICITATION PART I DUE DATE

  20. Adv. Nuclear Solicitation Part I Due Date | Department of Energy

    Energy Savers [EERE]

    Nuclear Solicitation Part I Due Date Adv. Nuclear Solicitation Part I Due Date July 20, 2016 12:01AM to 11:59PM EDT ADVANCED NUCLEAR ENERGY PROJECTS SOLICITATION PART I DUE DATE ...

  1. Study forecasts disappearance of conifers due to climate change

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

    Study forecasts disappearance of conifers due to climate change Study forecasts disappearance of conifers due to climate change New results, reported in a paper released today in ...

  2. Anisoplanatism in adaptive optics systems due to pupil aberrations...

    Office of Scientific and Technical Information (OSTI)

    Anisoplanatism in adaptive optics systems due to pupil aberrations Citation Details In-Document Search Title: Anisoplanatism in adaptive optics systems due to pupil aberrations You ...

  3. Potential for radionuclide redistribution due to biotic intrusion...

    Office of Scientific and Technical Information (OSTI)

    Potential for radionuclide redistribution due to biotic intrusion: Aboveground biomass ... due to biotic intrusion: Aboveground biomass study at the Los Alamos National ...

  4. Anisoplanatism in adaptive optics systems due to pupil aberrations...

    Office of Scientific and Technical Information (OSTI)

    Conference: Anisoplanatism in adaptive optics systems due to pupil aberrations Citation Details In-Document Search Title: Anisoplanatism in adaptive optics systems due to pupil ...

  5. Fact #920: April 11, 2016 Electric Charging Stations are the Fastest Growing Type of Alternative Fueling Station- Dataset

    Broader source: Energy.gov [DOE]

    Excel file and dataset for Electric Charging Stations are the Fastest Growing Type of Alternative Fueling Station

  6. Umatilla Tribes to Grow Native Plants for Hanford | Department of Energy

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

    Umatilla Tribes to Grow Native Plants for Hanford Umatilla Tribes to Grow Native Plants for Hanford January 2, 2012 - 12:00pm Addthis The Confederated Tribes of the Umatilla Indian Reservation’s field station, located in Mission, Ore., will be home to one-of-a-kind research and development for revegetation efforts. The Confederated Tribes of the Umatilla Indian Reservation's field station, located in Mission, Ore., will be home to one-of-a-kind research and development for revegetation

  7. Fact #744: September 10, 2012 Average New Light Vehicle Price Grows Faster

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

    than Average Used Light Vehicle Price | Department of Energy 4: September 10, 2012 Average New Light Vehicle Price Grows Faster than Average Used Light Vehicle Price Fact #744: September 10, 2012 Average New Light Vehicle Price Grows Faster than Average Used Light Vehicle Price In 2011 the average used light vehicle price was 36% higher than in 1990, while the average new light vehicle price was 67% higher than it was in 1990. The average price of a used vehicle had been between $6,000 and

  8. Fact #816: February 10, 2014 Natural Gas Refueling Stations Grow Over the

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

    Last Ten Years | Department of Energy 6: February 10, 2014 Natural Gas Refueling Stations Grow Over the Last Ten Years Fact #816: February 10, 2014 Natural Gas Refueling Stations Grow Over the Last Ten Years In 2003 there were 1,097 natural gas refueling stations nationwide. By 2013, that number increased by about 25% to a total of 1,374 natural gas refueling stations. In 2003, there were six states without any natural gas refueling stations. By 2013, South Dakota was the only state without

  9. Adv. Nuclear Solicitation Part II Due Date | Department of Energy

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

    Adv. Nuclear Solicitation Part II Due Date Adv. Nuclear Solicitation Part II Due Date April 13, 2016 12:01AM to 11:59PM EDT ADVANCED NUCLEAR ENERGY PROJECTS SOLICITATION PART II ...

  10. NERSC Initiative for Scientific Exploration proposals due May...

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

    proposals due May 31 NERSC Initiative for Scientific Exploration proposals due May 31 May 2, 2011 by Francesca Verdier The deadline to apply for the second and final round of award...

  11. SC11 Education Program Applications due July 31

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

    SC11 Education Program Applications due July 31 SC11 Education Program Applications due July 31 June 9, 2011 by Francesca Verdier Applications for the Education Program are now ...

  12. Adv. Fossil Solicitation Part I Due Date | Department of Energy

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

    I Due Date Adv. Fossil Solicitation Part I Due Date November 30, 2016 1:01AM EST to December 1, 2016 12:59AM EST ADVANCED FOSSIL ENERGY PROJECTS SOLICITATION PART I

  13. Adv. Fossil Solicitation Part II Due Date | Department of Energy

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

    II Due Date Adv. Fossil Solicitation Part II Due Date November 30, 2016 1:01AM AST to December 1, 2016 12:59AM AST ADVANCED FOSSIL ENERGY PROJECTS SOLICITATION PART II

  14. Adv. Fossil Solicitation Part I Due Date | Department of Energy

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

    Fossil Solicitation Part I Due Date Adv. Fossil Solicitation Part I Due Date September 14, 2016 12:01AM to 11:59PM EDT ADVANCED FOSSIL ENERGY PROJECTS SOLICITATION PART I DUE DATE Learn more about the Advanced Fossil

  15. Adv. Nuclear Solicitation Part II Due Date | Department of Energy

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

    Nuclear Solicitation Part II Due Date Adv. Nuclear Solicitation Part II Due Date November 23, 2016 12:01AM to 11:59PM EST ADVANCED NUCLEAR ENERGY PROJECTS SOLICITATION PART II DUE DATE Learn more about the Advanced Nuclear

  16. Adv. Nuclear Solicitation Part II Due Date | Department of Energy

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

    Nuclear Solicitation Part II Due Date Adv. Nuclear Solicitation Part II Due Date October 19, 2016 12:01AM to 11:59PM EDT ADVANCED NUCLEAR ENERGY PROJECTS SOLICITATION PART II DUE DATE Learn more about the Advanced Nuclear

  17. Synechococcus elongatus UTEX 2973, a fast growing cyanobacterial chassis for biosynthesis using light and CO2

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

    Yu, Jingjie; Liberton, Michelle; Cliften, Paul F.; Head, Richard D.; Jacobs, Jon M.; Smith, Richard D.; Koppenaal, David W.; Brand, Jerry J.; Pakrasi, Himadri B.

    2015-01-30

    Photosynthetic microbes are of emerging interest as production organisms in biotechnology because they can grow autotrophically using sunlight, an abundant energy source, and CO2, a greenhouse gas. Important traits for such microbes are fast growth and amenability to genetic manipulation. Here we describe Synechococcus elongatus UTEX 2973, a unicellular cyanobacterium capable of rapid autotrophic growth, comparable to heterotrophic industrial hosts such as yeast. Synechococcus 2973 can be readily transformed for facile generation of desired knockout and knock-in mutations. Genome sequencing coupled with global proteomics studies revealed that Synechococcus 2973 is a close relative of the widely studied cyanobacterium Synechococcus elongatusmore » PCC 7942, an organism that grows more than two times slower. A small number of nucleotide changes are the only significant differences between the genomes of these two cyanobacterial strains. Thus, our study has unraveled genetic determinants necessary for rapid growth of cyanobacterial strains of significant industrial potential.« less

  18. Synechococcus elongatus UTEX 2973, a fast growing cyanobacterial chassis for biosynthesis using light and CO2

    SciTech Connect (OSTI)

    Yu, Jingjie; Liberton, Michelle; Cliften, Paul F.; Head, Richard D.; Jacobs, Jon M.; Smith, Richard D.; Koppenaal, David W.; Brand, Jerry J.; Pakrasi, Himadri B.

    2015-01-30

    Photosynthetic microbes are of emerging interest as production organisms in biotechnology because they can grow autotrophically using sunlight, an abundant energy source, and CO2, a greenhouse gas. Important traits for such microbes are fast growth and amenability to genetic manipulation. Here we describe Synechococcus elongatus UTEX 2973, a unicellular cyanobacterium capable of rapid autotrophic growth, comparable to heterotrophic industrial hosts such as yeast. Synechococcus 2973 can be readily transformed for facile generation of desired knockout and knock-in mutations. Genome sequencing coupled with global proteomics studies revealed that Synechococcus 2973 is a close relative of the widely studied cyanobacterium Synechococcus elongatus PCC 7942, an organism that grows more than two times slower. A small number of nucleotide changes are the only significant differences between the genomes of these two cyanobacterial strains. Thus, our study has unraveled genetic determinants necessary for rapid growth of cyanobacterial strains of significant industrial potential.

  19. Contoured inner after-heater shield for reducing stress in growing crystalline bodies

    DOE Patents [OSTI]

    Kalejs, Juris P.

    1996-09-24

    An apparatus for growing hollow crystalline bodies by the EFG process, comprising an EFG die having a top surface shaped for growing a hollow crystalline body having a cross-sectional configuration in the shape of a polygon having n faces, and a radiation shield adjacent to and surrounded by the top end surface of the die, characterized in that the shield has an inner edge defining a similar polygon with n sides, and the inner edge of the shield is notched so that the spacing between the n faces and the n sides is greatest between the central portions of the n faces and the n sides, whereby the greater spacing at the central portions helps to reduce lateral temperature gradients in the crystalline body that is grown by use of the die.

  20. Modeling predicts which counties could store more carbon in soil by growing

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

    bioenergy crops | Argonne National Laboratory Modeling predicts which counties could store more carbon in soil by growing bioenergy crops By Katie Elyce Jones * July 13, 2016 Tweet EmailPrint To help stakeholders in government and business make smart decisions about the best types of land and local climates for planting bioenergy crops, researchers at the U.S. Department of Energy's (DOE's) Argonne National Laboratory are using computational modeling to predict which counties could see

  1. NREL Releases Renewable Energy Data Book Detailing Growing Industry in 2012

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

    - News Releases | NREL Releases Renewable Energy Data Book Detailing Growing Industry in 2012 November 21, 2013 The National Renewable Energy Laboratory (NREL) has released the 2012 Renewable Energy Data Book on behalf of the Energy Department's Office of Energy Efficiency and Renewable Energy. The annual report is an important assessment of U.S. energy statistics for 2012, including renewable electricity, worldwide renewable energy development, clean energy investments, and data on specific

  2. NREL's Impact Grows Through the Clean Energy Solutions Center and the New

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

    Clean Energy Design Studio - Continuum Magazine | NREL NREL's Impact Grows Through the Clean Energy Solutions Center and the New Clean Energy Design Studio The Clean Energy Solutions Center (Solutions Center) helps governments design and adopt policies and programs that support the deployment of clean energy technologies. South Africa and Antigua & Barbuda are two examples of the Solutions Center helping advance climate change goals around the globe. And the next big thing in clean

  3. Growing the Tool Box for Medical Imaging: The Selenium-72/Arsenic-72

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

    Generator | U.S. DOE Office of Science (SC) Growing the Tool Box for Medical Imaging: The Selenium-72/Arsenic-72 Generator 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) 903-3833 E: Email Us More Information

  4. Science.gov: Still Strong, Growing in 10th Anniversary Year | OSTI, US Dept

    Office of Scientific and Technical Information (OSTI)

    of Energy Office of Scientific and Technical Information December 5, 2012 Science.gov: Still Strong, Growing in 10th Anniversary Year Washington, DC - Science.gov, known for its groundbreaking search and retrieval of government science information, is celebrating its 10th Anniversary. Through federated one-stop search of U.S. government science information, the portal offers free access to research and development results from 17 organizations within 13 federal science agencies. Science.gov

  5. How Does Your Garden Grow? Study Identifies Instigators of Plant Growth |

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

    U.S. DOE Office of Science (SC) How Does Your Garden Grow? Study Identifies Instigators of Plant Growth Biological and Environmental Research (BER) BER Home About Research Facilities Science Highlights Searchable Archive of BER Highlights External link Benefits of BER Funding Opportunities Biological & Environmental Research Advisory Committee (BERAC) Community Resources Contact Information Biological and Environmental Research U.S. Department of Energy SC-23/Germantown Building 1000

  6. Cloud Properties from Doppler Radar Spectra - a Growing Suite of Information Extraction Algorithms

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

    from Doppler Radar Spectra - a Growing Suite of Information Extraction Algorithms Edward Luke 1 , Pavlos Kollias 2 , Matthew Shupe 3 , Karen Johnson 1 , Eugene Clothiaux 4 1. Brookhaven National Laboratory 2. McGill University 3. CIRES/NOAA/ETL 4. Penn State University C F B A E D Lidar Prediction Algorithm Depolarization C F B A E D Backscatter DOPPLER RADAR SPECTRA HYDROMETEOR PHASE CLASSIFICATION MIXED LIQUID SOLID MIXED LIQUID SOLID Shupe Multi-instrument Technique Doppler Radar Spectra

  7. Environmental and societal consequences of a possible CO/sub 2/-induced climate change. Volume II, Part 8. Impacts of rising atmospheric carbon dioxide levels on agricultural growing seasons and crop water use efficiencies

    SciTech Connect (OSTI)

    Newman, J. E.

    1982-09-01

    The researchable areas addressed relate to the possible impacts of climate change on agricultural growing seasons and crop adaptation responses on a global basis. The research activities proposed are divided into the following two main areas of investigation: anticipated climate change impacts on the physical environmental characteristics of the agricultural growing seasons and, the most probable food crop responses to the possible changes in atmospheric CO/sub 2/ levels in plant environments. The main physical environmental impacts considered are the changes in temperature, or more directly, thermal energy levels and the growing season evapotranspiration-precipitation balances. The resulting food crop, commercial forest and rangeland species response impacts addressed relate to potential geographical shifts in agricultural growing seasons as determined by the length in days of the frost free period, thermal energy changes and water balance changes. In addition, the interaction of possible changes in plant water use efficiencies during the growing season in relationship to changing atmospheric CO/sub 2/ concentrations, is also considered under the scenario of global warming due to increases in atmospheric CO/sub 2/ concentration. These proposed research investigations are followed by adaptive response evaluations.

  8. Acquisition Letter on Allowability of Incurred Costs Due to Contractor

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

    Errors | Department of Energy on Allowability of Incurred Costs Due to Contractor Errors Acquisition Letter on Allowability of Incurred Costs Due to Contractor Errors The attached Acquisition Letter has been issued to provide application guidance to contracting officers for determining the allowability of incurred costs due to contractor errors. It applies to all contracts, including management and operating contracts, whose price or cost reimbursement is based on estimated or incurred

  9. ASCR Leadership Computing Challenge (ALCC) proposals due February...

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

    Proposals are due February 1, 2013. See: http:science.energy.govascrfacilitiesalcc. Subscribe via RSS Subscribe Browse by Date April 2016 January 2016 December 2015 November ...

  10. Sandia National Laboratories: Due Diligence on Lead Acid Battery...

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

    Due Diligence on Lead Acid Battery Recycling March 23, 2011 Lead Acid Batteries on secondary containment pallet Lead Acid Batteries on secondary containment pallet In 2004, the US...

  11. Solar Photovoltaic Economic Development: Building and Growing a Local PV Industry, August 2011 (Book)

    SciTech Connect (OSTI)

    Not Available

    2011-08-01

    The U.S. photovoltaic (PV) industry is forecast to grow, and it represents an opportunity for economic development and job creation in communities throughout the United States. This report helps U.S. cities evaluate economic opportunities in the PV industry. It serves as a guide for local economic development offices in evaluating their community?s competitiveness in the solar PV industry, assessing the viability of solar PV development goals, and developing strategies for recruiting and retaining PV companies to their areas.

  12. Development of nonlinearity in a growing self-excited dust-density wave

    SciTech Connect (OSTI)

    Flanagan, T. M.; Goree, J.

    2011-01-15

    The development of nonlinearity is observed in a naturally occurring planar dust-density wave. As it propagates through a dusty plasma, the wave grows and harmonics are generated. The amplitudes, wave numbers, and growth rates are measured for the fundamental and its harmonics. The energy in the harmonic modes exhibits a strong exponential increase with diminishing gas pressure, until it levels off at lower gas pressures. The wave numbers and growth rates for the harmonics are near integer multiples of those for the fundamental.

  13. Method of growing films by flame synthesis using a stagnation-flow reactor

    DOE Patents [OSTI]

    Hahn, David W.; Edwards, Christopher F.

    1998-01-01

    A method of stabilizing a strained flame in a stagnation flow reactor. By causing a highly strained flame to be divided into a large number of equal size segments it is possible to stablize a highly strained flame that is on the verge of extinction, thereby providing for higher film growth rates. The flame stabilizer is an annular ring mounted coaxially and coplanar with the substrate upon which the film is growing and having a number of vertical pillars mounted on the top surface, thereby increasing the number of azimuthal nodes into which the flame is divided and preserving an axisymmetric structure necessary for stability.

  14. Method of growing films by flame synthesis using a stagnation-flow reactor

    DOE Patents [OSTI]

    Hahn, D.W.; Edwards, C.F.

    1998-11-24

    A method is described for stabilizing a strained flame in a stagnation flow reactor. By causing a highly strained flame to be divided into a large number of equal size segments it is possible to stablize a highly strained flame that is on the verge of extinction, thereby providing for higher film growth rates. The flame stabilizer is an annular ring mounted coaxially and coplanar with the substrate upon which the film is growing and having a number of vertical pillars mounted on the top surface, thereby increasing the number of azimuthal nodes into which the flame is divided and preserving an axisymmetric structure necessary for stability. 5 figs.

  15. (Assessment of the potential of Yunnan Province, China to grow and convert biomass to electricity)

    SciTech Connect (OSTI)

    Perlack, R.D.

    1990-10-15

    The purpose of the trip was to conduct a preliminary evaluation of biomass energy development in Yunnan Province, China. The evaluation included an assessment of the potential to grow and convert biomass to electricity, and an evaluation of the institutional relationships, which would be critical to the establishment of a collaborative biomass energy development project. This site visit was undertaken to evaluate the potential of an integrated biomass energy project, including the growing and handling of biomass feedstocks and its conversion to electricity. Based on this site visit, it was concluded that biomass production risks are real and further research on species screening and experiments is necessary before proceeding to the conversion phase of this project. The location of potential sites inspected and the logistics required for handling and transporting biomass may also be a concern. The commitment of support (labor and land) and leadership to this project by the Chinese is overwhelming exceeding all pre-site visit expectations. In sum, there is a definite opportunity in Yunnan for an integrated biomass energy project and a potential market for US technology.

  16. EAC Meeting Cancelled Due to Weather | Department of Energy

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

    Cancelled Due to Weather EAC Meeting Cancelled Due to Weather March 5, 2013 - 3:06pm Addthis This week's Electricity Advisory Committee (EAC) meeting has been cancelled due to a strong winter storm which is predicted to impact the Washington DC area on Wednesday. Originally scheduled to be held March 6 and March 7 in Arlington, Virginia, the EAC meeting may possibly be rescheduled for a later date. If the meeting is rescheduled, details will be posted online and will be published in a new

  17. COLLATERAL EFFECTS ON SOLAR NEBULA OXYGEN ISOTOPES DUE TO INJECTION...

    Office of Scientific and Technical Information (OSTI)

    COLLATERAL EFFECTS ON SOLAR NEBULA OXYGEN ISOTOPES DUE TO INJECTION OF sup 26Al BY A NEARBY SUPERNOVA Citation Details In-Document Search Title: COLLATERAL EFFECTS ON SOLAR ...

  18. REEE Solicitation Part II Due Date | Department of Energy

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

    12:01AM to 11:59PM EST RENEWABLE ENERGY AND EFFICENT ENERGY PROJECTS SOLICITATION PART II DUE DATE Learn more about the Renewable Energy and Efficent Energy Projects Solicitation...

  19. Adv. Fossil Solicitation Part II Due Date | Department of Energy

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

    January 29, 2016 12:01AM to 11:59PM EST ADVANCED FOSSIL ENERGY PROJECTS SOLICITATION PART II DUE DATE Learn more about the Advanced Fossil Energy Projects Solicitation...

  20. REEE Solicitation Part II Due Date | Department of Energy

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

    12:01AM to 11:59PM EDT RENEWABLE ENERGY AND EFFICENT ENERGY PROJECTS SOLICITATION PART II DUE DATE Learn more about the Renewable Energy and Efficent Energy Projects...

  1. ASCR Leadership Computing Challenge (ALCC) proposals due February 1, 2013

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

    (ALCC) proposals due February 1, 2013 ASCR Leadership Computing Challenge (ALCC) proposals due February 1, 2013 January 2, 2013 by Francesca Verdier DOE's ASCR Leadership Computing Challenge (ALCC) program is intended for special situations of interest to the Department's energy mission, with an emphasis on high-risk, high-payoff simulations: Advancing the clean energy agenda. Advancing a robust predictive understanding of the Earth's climate and environmental systems. Responding to natural and

  2. ASCR Leadership Computing Challenge Requests for Time Due February 14

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

    Requests for Time Due February 14 ASCR Leadership Computing Challenge Requests for Time Due February 14 November 17, 2011 by Francesca Verdier The ASCR Leadership Computing Challenge (ALCC) program is open to scientists from the research community in national laboratories, academia and industry. This program allocates time at NERSC and the Leadership Computing Facilities at Argonne and Oak Ridge. Areas of interest are: Advancing the clean energy agenda. Understanding the environmental impacts of

  3. ASCR Leadership Computing Challenge proposals due February 3

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

    proposals due February 3 ASCR Leadership Computing Challenge proposals due February 3 January 6, 2015 by Francesca Verdier The Call for 2015 ALCC is now open. See http://science.energy.gov/ascr/facilities/alcc/ for details. ALCC supports projects that advance the DOE mission and further the goals of DOE program offices. For 2015 ALCC, projects of special interest to the DOE include the following: Energy efficiency and the clean energy agenda Nuclear reactor safety and environmental management of

  4. NERSC Initiative for Scientific Exploration proposals due May 31

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

    proposals due May 31 NERSC Initiative for Scientific Exploration proposals due May 31 May 2, 2011 by Francesca Verdier The deadline to apply for the second and final round of award decisions for the NERSC Initiative for Scientific Exploration (NISE) program is May 31, 2011. Award decisions will be announced by mid June. Details of NISE award and application form can be found at: NERSC Initiative for Scientific Exploration (NISE) Subscribe via RSS Subscribe Browse by Date August 2016 June 2016

  5. Technology Solutions Case Study: Overcoming Comfort Issues Due to Reduced

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

    Flow Room Air Mixing | Department of Energy Case Study: Overcoming Comfort Issues Due to Reduced Flow Room Air Mixing Technology Solutions Case Study: Overcoming Comfort Issues Due to Reduced Flow Room Air Mixing Energy efficiency upgrades reduce heating and cooling loads on a house. With enough load reduction and if the heating, ventilating, and air-conditioning (HVAC) system warrants replacement, the HVAC system is often upgraded with a more efficient, lower capacity system that meets the

  6. SC11 Education Program Applications due July 31

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

    SC11 Education Program Applications due July 31 SC11 Education Program Applications due July 31 June 9, 2011 by Francesca Verdier Applications for the Education Program are now being accepted. Submission website: https://submissions.supercomputing.org Applications deadline: Sunday, July 31, 2011 Acceptance Notifications: Monday, August 22, 2011 The Education Program is hosting a four-day intensive program that will immerse participants in High Performance Computing (HPC) and Computational and

  7. Los Alamos STEM Challenge registration due April 12

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

    Los Alamos STEM Challenge registration due April 12 Community Connections: Your link to news and opportunities from Los Alamos National Laboratory Latest Issue: September 1, 2016 all issues All Issues » submit Los Alamos STEM Challenge registration due April 12 Submission deadline April 30. April 1, 2013 Two students at work on a laptop Videos, posters, apps and essays are all possible submissions for the upcoming STEM Challenge for students. Contact Editor Linda Anderman Email Community

  8. Study forecasts disappearance of conifers due to climate change

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

    Study forecasts disappearance of conifers due to climate change Study forecasts disappearance of conifers due to climate change New results, reported in a paper released today in the journal Nature Climate Change, suggest that global models may underestimate predictions of forest death. December 21, 2015 Los Alamos scientist Nate McDowell discusses how climate change is killing trees with PBS NewsHour reporter Miles O'Brien. Los Alamos scientist Nate McDowell discusses how climate change is

  9. Summer 2012 National Geothermal Academy: Applications Due February 15 |

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

    Department of Energy Summer 2012 National Geothermal Academy: Applications Due February 15 Summer 2012 National Geothermal Academy: Applications Due February 15 January 23, 2012 - 4:02pm Addthis Course modules run from June 18 to August 10. (Download Application) The National Geothermal Academy is proud to present an intensive summer course in all aspects of geothermal energy development and utilization, held at the University of Nevada, Reno campus. The eight-week course is offered for

  10. Protecting the Electric Grid from Increasingly Severe Weather Due to

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

    Climate Change | Department of Energy Electric Grid from Increasingly Severe Weather Due to Climate Change Protecting the Electric Grid from Increasingly Severe Weather Due to Climate Change August 12, 2013 - 5:25pm Addthis Transmission lines along Highway 15 outside Victorville, California. | Photo courtesy of Abby Rowling. Transmission lines along Highway 15 outside Victorville, California. | Photo courtesy of Abby Rowling. Patricia A. Hoffman Patricia A. Hoffman Assistant Secretary,

  11. Method of synthesizing and growing copper-indium-diselenide (CuInSe.sub.2) crystals

    DOE Patents [OSTI]

    Ciszek, Theodore F.

    1987-01-01

    A process for preparing CuInSe.sub.2 crystals includes melting a sufficient quantity of B.sub.2 O.sub.3 along with stoichiometric quantities of Cu, In, and Se in a crucible in a high pressure atmosphere of inert gas to encapsulate the CuInSe.sub.2 melt and confine the Se to the crucible. Additional Se in the range of 1.8 to 2.2 percent over the stoichiometric quantity is preferred to make up for small amounts of Se lost in the process. The crystal is grown by inserting a seed crystal through the B.sub.2 O.sub.3 encapsulate into contact with the CuInSe.sub.2 melt and withdrawing the seed upwardly to grow the crystal thereon from the melt.

  12. The temperature dependence of atomic incorporation characteristics in growing GaInNAs films

    SciTech Connect (OSTI)

    Li, Jingling; Gao, Fangliang; Wen, Lei; Zhou, Shizhong; Zhang, Shuguang E-mail: msgli@scut.edu.cn; Li, Guoqiang E-mail: msgli@scut.edu.cn

    2015-02-07

    We have systematically studied the temperature dependence of incorporation characteristics of nitrogen (N) and indium (In) in growing GaInNAs films. With the implementation of Monte-Carlo simulation, the low N adsorption energy (−0.10 eV) is demonstrated. To understand the atomic incorporation mechanism, temperature dependence of interactions between Group-III and V elements are subsequently discussed. We find that the In incorporation behaviors rather than that of N are more sensitive to the T{sub g}, which can be experimentally verified by exploring the compositional modulation and structural changes of the GaInNAs films by means of high-resolution X-ray diffraction, X-ray photoelectron spectroscopy, scanning electron microscope, and secondary ion mass spectroscopy.

  13. Forest phenology and a warmer climate - Growing season extension in relation to climatic provenance

    SciTech Connect (OSTI)

    Gunderson, Carla A; Edwards, Nelson T; Walker, Ashley V; O'Hara, Keiran H; Campion, Christina M; Hanson, Paul J

    2012-01-01

    Predicting forest responses to warming climates relies on assumptions about niche and temperature sensitivity that remain largely untested. Observational studies have related current and historical temperatures to phenological shifts, but experimental evidence is sparse, particularly for autumn responses. A five-year field experiment exposed four deciduous forest species from contrasting climates (Liquidambar styraciflua, Quercus rubra, Populus grandidentata, and Betula alleghaniensis) to air temperatures 2 and 4 C above ambient controls. Impacts of year-round warming on bud burst (BB), senescence and abscission were evaluated in relation to thermal provenance. Leaves emerged earlier in all species, by an average of 6-9 days at +2 and +4 C. Magnitude of advance varied with species and year, but was larger for the first 2 C increment than the second. The effect of warming increased with early BB, favoring Liquidambar, from the warmest climate, but even BB in northern species advanced, despite temperatures well beyond those of the realized niche. Treatment differences in BB were poorly explained by temperature sums, which increased with treatment. In autumn, chlorophyll was retained an average of 4 and 7 days longer in +2 and +4 C treatments, and abscission delayed by 8 and 13 days. Species differences in autumn responses were marginally significant. Growing seasons in the warmer atmospheres were 6 - 28 days longer, with the least impact in Quercus. Results are compared with a 16-year record of canopy onset and offset in a nearby upland deciduous forest, where BB showed similar responsiveness to spring temperatures (2 - 4 days C-1). Offset dates in the stand tracked August-September temperatures, except when late summer drought caused premature senescence. The common garden-like experimental approach provides evidence that warming alone extends the growing season, at both ends, even if stand-level impacts are complicated by other environmental factors.

  14. AY 2016 ERCAP Renewals Due Sept 21st

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

    AY 2016 ERCAP Renewals Due Sept 21st AY 2016 ERCAP Renewals Due Sept 21st September 18, 2015 Rememeber to submit your AY 2016 ERCAP renewal requests by 21:59 on Monday Sept. 21st. Thanks. Subscribe via RSS Subscribe Browse by Date August 2016 June 2016 May 2016 April 2016 January 2016 December 2015 November 2015 October 2015 September 2015 August 2015 July 2015 April 2015 March 2015 January 2015 December 2014 November 2014 October 2014 August 2014 June 2014 May 2014 April 2014 March 2014 January

  15. Methanol market slowly tightens as Brazil starts soaking up material

    SciTech Connect (OSTI)

    Young, I.

    1992-11-25

    Although the US methanol market's response to mandated oxygen requirements in reformulated gasoline has been disappointing, the European market has surprisingly been tightening in recent weeks and looks set for a price rise in first-quarter 1993. The tightness is being felt mainly in the Mediterranean market, where the Libyan methanol plant is running at only 70% because of problems with gas feedstock supplies. More significantly, the Brazilian government has now given the go-ahead for a yearlong extension on imports of methanol for use as an ethanol replacement in fuel blending. The new authorization sets a monthly import limit of 48,000 m.t. during that period. Libya is an important supplier of methanol to the Brazilian market and has already shipped about 20,000 m.t. since the authorization was given. Another major supplier to Brazil is Russia, from its two giant 750,000-m.t./year plants at Gubakha and Tomsk. The material is shipped from the terminal at Yuzhnyy on the Black Sea, in Ukrainian territory since the collapse of the Soviet Union.

  16. Results from intercropping fast-growing trees and food crops at Morogoro, Tanzania

    SciTech Connect (OSTI)

    Redhead, J.F.

    1992-12-31

    In Morogoro, Tanzania, agroforestry trials were set up to investigate intercropping with primarily eucalypt species. The climate in the region is very similar to Kolar, Karnataka State, India. Three crops-sorghum, bean and maize-were grown annually under Eucalyptus tereticornis at 2.5 m x 2.5 m for three years with a range of weeding practices. Plots that were intercropped with beans showed best results. Shading by the eucalypts after three years resulted in negligible crop yields in all treatments. Three tree spacings of E. camaldulensis (3 m x 3 m, 4 m x 4 m, and 5 m x 5 m) were combined with the intercropping of beans and maize. Beans gave satisfactory yields at all spacings, but the maize showed significantly depressed yields at 3 m x 3 m at 4 m x 4 m, but was similar to pure maize crop at 5 m x 5 m spacing. Overall the extra revenue from a food crop in the first and second year of tree growth increases the return from the land. The short rotation of fast growing trees depleted the soil of nutrients and, as with other crops, the fertility would have to be maintained by applying fertilizer.

  17. Oil supply increase due in 1996`s second half

    SciTech Connect (OSTI)

    Beck, R.J.

    1996-07-29

    The crucial oil-market issue for this year`s second half is new supply. Production will increase again outside the Organization of Petroleum Exporting Countries. And Iraq has general approval to resume exports under limits set by the United Nations, although start of the exports has been delayed by at least 60 days. The big question is the market`s ability to absorb the supply gains. As usual, the market`s need for oil in the second half will depend on economies. So far in 1996, economic growth has pushed consumption to levels unexpected a year ago. Demand the rest of the year depends heavily on economic performances of the industrialized nations that make up the organization for Economic Cooperation and Development (OECD) and the rapidly growing nations of the Asia-Pacific region. Growth in countries elsewhere in the developing world, especially Latin America, remains a wild card. The paper discusses the worldwide outlook, crude oil prices, US product prices, natural gas prices, US economy, US energy demand, natural gas in the US, US oil demand, gasoline prices, distillate gains, resid slumps, LPG, ethane, US supply, production patterns, rise in refinery capacity, imports, stocks, and stock coverage.

  18. Sandia National Laboratories: Due Diligence on Lead Acid Battery Recycling

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

    Due Diligence on Lead Acid Battery Recycling March 23, 2011 Lead Acid Batteries on secondary containment pallet Lead Acid Batteries on secondary containment pallet In 2004, the US Geological Survey estimated that 95% of lead in the United States is recycled, primarily from used lead acid batteries. A broader 2009 European study estimated that globally about 52% of lead is recycled, and a 2008 Asian study estimated a global recycle rate of 68%. Unfortunately, many incidents over the past decade

  19. Charge Transport Anisotropy Due to Grain Boundaries in Directionally

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

    Crystallized Thin Films of Regio-Regular Poly(3-hexylthiophene) Charge Transport Anisotropy Due to Grain Boundaries in Directionally Crystallized Thin Films of Regio-Regular Poly(3-hexylthiophene) Semicrystalline polymers, such as polythiophenes, hold much promise as active layers in printable electronic devices such as photovoltaic cells, sensors, and thin film transistors. As organic semiconductors approach commercialization, there is a need to better understand the relationship between

  20. EXCITATION OF STRUCTURAL RESONANCE DUE TO A BEARING FAILURE

    SciTech Connect (OSTI)

    Leishear, R; David Stefanko, D

    2007-04-30

    Vibration due to a bearing failure in a pump created significant vibrations in a fifteen foot by fifteen foot by eight feet tall mounting platform due to excitation of resonant frequencies. In this particular application, an 18,000 pound pump was mounted to a structural steel platform. When bearing damage commenced, the platform vibrated with sufficient magnitude that conversations could not be heard within forty feet of the pump. Vibration analysis determined that the frequency of the bearing was coincident to one of the natural frequencies of the pump, which was, in turn, coincident to one of the natural frequencies of the mounting platform. This coincidence of frequencies defines resonance. Resonance creates excessive vibrations when the natural frequency of a structure is coincident to an excitation frequency. In this well documented case, the excitation frequency was related to ball bearing failures. The pump is a forty foot long vertical pump used to mix nuclear waste in 1,300,000 gallon tanks. A 300 horsepower drive motor is mounted to a structural steel platform on top of the tank. The pump hangs down into the tank from above to mix the waste and is inaccessible after installation. Initial awareness of the problem was due to increased noise from the pump. Initial vibration analysis indicated that the vibration levels of the bearing were within the expected range for this type of bearing, and the resonant condition was not obvious. Further analysis consisted of disassembly of the motor to inspect the bearings and extensive vibration monitoring. Vibration data for the bearings was obtained from the manufacturer and compared to measured vibration plots for the pump and mounting platform. Vibration data measured along the length of the pump was available from full scale testing, and vibrations were also measured at the installed pump. One of the axial frequencies of the pump, the platform frequency in the vertical direction, and the ball spin frequency for the

  1. Optical loss due to diffraction by concentrator Fresnel lenses

    SciTech Connect (OSTI)

    Hornung, Thorsten Nitz, Peter

    2014-09-26

    Fresnel lenses are widely used in concentrating photovoltaic (CPV) systems as a primary optical element. They focus sunlight on small solar cells or on the entrance apertures of secondary optical elements. A Fresnel lens consists of several prism rings and diffraction by these prism rings is unavoidable. Some of the light that would reach a designated target area according to geometric optics will miss it due to diffraction. This diffraction loss may be of relevant magnitude for CPV applications. The results of published analytical calculations are evaluated, discussed, and compared to computer simulations and measurements.

  2. Seismic attenuation due to wave-induced flow

    SciTech Connect (OSTI)

    Pride, S.R.; Berryman, J.G.; Harris, J.M.

    2003-10-09

    Analytical expressions for three P-wave attenuation mechanisms in sedimentary rocks are given a unified theoretical framework. Two of the models concern wave-induced flow due to heterogeneity in the elastic moduli at mesoscopic scales (scales greater than grain sizes but smaller than wavelengths). In the first model, the heterogeneity is due to lithological variations (e.g., mixtures of sands and clays) with a single fluid saturating all the pores. In the second model, a single uniform lithology is saturated in mesoscopic ''patches'' by two immiscible fluids (e.g., air and water). In the third model, the heterogeneity is at ''microscopic'' grain scales (broken grain contacts and/or micro-cracks in the grains) and the associated fluid response corresponds to ''squirt flow''. The model of squirt flow derived here reduces to proper limits as any of the fluid bulk modulus, crack porosity, and/or frequency is reduced to zero. It is shown that squirt flow is incapable of explaining the measured level of loss (10{sup -2} < Q{sup -1} < 10{sup -1}) within the seismic band of frequencies (1 to 10{sup 4} Hz); however, either of the two mesoscopic scale models easily produce enough attenuation to explain the field data.

  3. Comments on Landau damping due to synchrotron frequency spread

    SciTech Connect (OSTI)

    Ng, K.Y.; /Fermilab

    2005-01-01

    An inductive/space-charge impedance shifts the synchrotron frequency downwards above/below transition, but it is often said that the coherent synchrotron frequency of the bunch is not shifted in the rigid-dipole mode. On the other hand, the incoherent synchrotron frequency due to the sinusoidal rf always spreads in the downward direction. This spread will therefore not be able to cover the coherent synchrotron frequency, implying that there will not be any Landau damping no matter how large the frequency spread is. By studying the dispersion relation, it is shown that the above argument is incorrect, and there will be Landau damping if there is sufficient frequency spread. The main reason is that the coherent frequency of the rigid-dipole mode will no longer remain unshifted in the presence of a synchrotron frequency spread.

  4. Detailed characteristics of intermittent current pulses due to positive corona

    SciTech Connect (OSTI)

    Liu, Yang Cui, Xiang; Lu, Tiebing; Wang, Zhenguo; Li, Xuebao; Xiang, Yu; Wang, Xiaobo

    2014-08-15

    In order to get detailed characteristics of intermittent current pulses due to positive corona such as the repetition rate of burst-pulse trains, the peak value ratio of the primary pulse to the secondary pulse, the number of pulses per burst, and the interval of the secondary pulses, a systematic study was carried out in a coaxial conductor-cylinder electrode system with the conductor electrode being set with a discharge point. Empirical formulae for the number of pulses per burst and the interval of the secondary pulses are first presented. A theoretical model based on the motion of the space-charge clouds is proposed. Analysis with the model gives explanations to the experimental results and reveals some new insights into the physical mechanism of positive intermittent corona.

  5. Excitation of flow instabilities due to nonlinear scale invariance

    SciTech Connect (OSTI)

    Prasad Datta, Dhurjati; Sen, Sudip

    2014-05-15

    A novel route to instabilities and turbulence in fluid and plasma flows is presented in kinetic Vlasov-Maxwell model. New kind of flow instabilities is shown to arise due to the availability of new kinetic energy sources which are absent in conventional treatments. The present approach is based on a scale invariant nonlinear analytic formalism developed to address irregular motions on a chaotic attractor or in turbulence in a more coherent manner. We have studied two specific applications of this turbulence generating mechanism. The warm plasma Langmuir wave dispersion relation is shown to become unstable in the presence of these multifractal measures. In the second application, these multifractal measures are shown to induce naturally non-Gaussian, i.e., a stretched, Gaussian distribution and anomalous transport for tracer particles from the turbulent advection-diffusion transport equation in a Vlasov plasma flow.

  6. Moisture Risk in Unvented Attics Due to Air Leakage Paths

    SciTech Connect (OSTI)

    Prahl, D.; Shaffer, M.

    2014-11-01

    IBACOS completed an initial analysis of moisture damage potential in an unvented attic insulated with closed-cell spray polyurethane foam. To complete this analysis, the research team collected field data, used computational fluid dynamics to quantify the airflow rates through individual airflow (crack) paths, simulated hourly flow rates through the leakage paths with CONTAM software, correlated the CONTAM flow rates with indoor humidity ratios from Building Energy Optimization software, and used Wärme und Feuchte instationär Pro two-dimensional modeling to determine the moisture content of the building materials surrounding the cracks. Given the number of simplifying assumptions and numerical models associated with this analysis, the results indicate that localized damage due to high moisture content of the roof sheathing is possible under very low airflow rates. Reducing the number of assumptions and approximations through field studies and laboratory experiments would be valuable to understand the real-world moisture damage potential in unvented attics.

  7. Moisture Risk in Unvented Attics Due to Air Leakage Paths

    SciTech Connect (OSTI)

    Prahl, D.; Shaffer, M.

    2014-11-01

    IBACOS completed an initial analysis of moisture damage potential in an unvented attic insulated with closed-cell spray polyurethane foam. To complete this analysis, the research team collected field data, used computational fluid dynamics to quantify the airflow rates through individual airflow (crack) paths, simulated hourly flow rates through the leakage paths with CONTAM software, correlated the CONTAM flow rates with indoor humidity ratios from Building Energy Optimization software, and used Warme und Feuchte instationar Pro two-dimensional modeling to determine the moisture content of the building materials surrounding the cracks. Given the number of simplifying assumptions and numerical models associated with this analysis, the results indicate that localized damage due to high moisture content of the roof sheathing is possible under very low airflow rates. Reducing the number of assumptions and approximations through field studies and laboratory experiments would be valuable to understand the real-world moisture damage potential in unvented attics.

  8. Crystallographic changes in lead zirconate titanate due to neutron irradiation

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

    Henriques, Alexandra; Graham, Joseph T.; Landsberger, Sheldon; Ihlefeld, Jon F.; Brennecka, Geoff L.; Brown, Donald W.; Forrester, Jennifer S.; Jones, Jacob L.

    2014-11-17

    Piezoelectric and ferroelectric materials are useful as the active element in non-destructive monitoring devices for high-radiation areas. Here, crystallographic structural refinement (i.e., the Rietveld method) is used to quantify the type and extent of structural changes in PbZr0.5Ti0.5O3 after exposure to a 1 MeV equivalent neutron fluence of 1.7 × 1015 neutrons/cm2. The results show a measurable decrease in the occupancy of Pb and O due to irradiation, with O vacancies in the tetragonal phase being created preferentially on one of the two O sites. The results demonstrate a method by which the effects of radiation on crystallographic structure maymore » be investigated.« less

  9. Crystallographic changes in lead zirconate titanate due to neutron irradiation

    SciTech Connect (OSTI)

    Henriques, Alexandra; Graham, Joseph T.; Landsberger, Sheldon; Ihlefeld, Jon F.; Brennecka, Geoff L.; Brown, Donald W.; Forrester, Jennifer S.; Jones, Jacob L.

    2014-11-15

    Piezoelectric and ferroelectric materials are useful as the active element in non-destructive monitoring devices for high-radiation areas. Here, crystallographic structural refinement (i.e., the Rietveld method) is used to quantify the type and extent of structural changes in PbZr{sub 0.5}Ti{sub 0.5}O{sub 3} after exposure to a 1 MeV equivalent neutron fluence of 1.7 × 10{sup 15} neutrons/cm{sup 2}. The results show a measurable decrease in the occupancy of Pb and O due to irradiation, with O vacancies in the tetragonal phase being created preferentially on one of the two O sites. The results demonstrate a method by which the effects of radiation on crystallographic structure may be investigated.

  10. Crystallographic changes in lead zirconate titanate due to neutron irradiation

    SciTech Connect (OSTI)

    Henriques, Alexandra; Graham, Joseph T.; Landsberger, Sheldon; Ihlefeld, Jon F.; Brennecka, Geoff L.; Brown, Donald W.; Forrester, Jennifer S.; Jones, Jacob L.

    2014-11-17

    Piezoelectric and ferroelectric materials are useful as the active element in non-destructive monitoring devices for high-radiation areas. Here, crystallographic structural refinement (i.e., the Rietveld method) is used to quantify the type and extent of structural changes in PbZr0.5Ti0.5O3 after exposure to a 1 MeV equivalent neutron fluence of 1.7 1015 neutrons/cm2. The results show a measurable decrease in the occupancy of Pb and O due to irradiation, with O vacancies in the tetragonal phase being created preferentially on one of the two O sites. The results demonstrate a method by which the effects of radiation on crystallographic structure may be investigated.

  11. Changes in Dimethyl Sulfide Oceanic Distribution due to Climate Change

    SciTech Connect (OSTI)

    Cameron-Smith, P; Elliott, S; Maltrud, M; Erickson, D; Wingenter, O

    2011-02-16

    Dimethyl sulfide (DMS) is one of the major precursors for aerosols and cloud condensation nuclei in the marine boundary layer over much of the remote ocean. Here they report on coupled climate simulations with a state-of-the-art global ocean biogeochemical model for DMS distribution and fluxes using present-day and future atmospheric CO{sub 2} concentrations. They find changes in zonal averaged DMS flux to the atmosphere of over 150% in the Southern Ocean. This is due to concurrent sea ice changes and ocean ecosystem composition shifts caused by changes in temperature, mixing, nutrient, and light regimes. The largest changes occur in a region already sensitive to climate change, so any resultant local CLAW/Gaia feedback of DMS on clouds, and thus radiative forcing, will be particularly important. A comparison of these results to prior studies shows that increasing model complexity is associted with reduced DMS emissions at the equator and increased emissions at high latitudes.

  12. Computer Simulation of Bubble Growth in Metals Due to He

    SciTech Connect (OSTI)

    FOILES, STEPHEN M.; HOYT, JEFFREY J.

    2001-03-01

    Atomistic simulations of the growth of helium bubbles in metals are performed. The metal is represented by embedded atom method potentials for palladium. The helium bubbles are treated via an expanding repulsive spherical potential within the metal lattice. The simulations predict bubble pressures that decrease monotonically with increasing helium to metal ratios. The swelling of the material associated with the bubble growth is also computed. It is found that the rate of swelling increases with increasing helium to metal ratio consistent with experimental observations on the swelling of metal tritides. Finally, the detailed defect structure due to the bubble growth was investigated. Dislocation networks are observed to form that connect the bubbles. Unlike early model assumptions, prismatic loops between the bubbles are not retained. These predictions are compared to available experimental evidence.

  13. Enhancement of Zirconolite Dissolution Due to Water Radiolysis

    SciTech Connect (OSTI)

    Tribet, Magaly; Moncoffre, Nathalie

    2007-07-01

    Zirconolite is a candidate host material for conditioning minor tri- and tetra-valent actinides arising from enhanced nuclear spent fuel reprocessing and partitioning, in the case of disposal of the nuclear waste. Its chemical durability has been studied here under charged particle-induced radiolysis (He{sup 2+} and proton external beams) to identify the possible effects of water radiolysis on the dissolution rates in pure water and to describe the alteration mechanisms. Two experimental geometries have been used in order to evaluate the influence of the following parameters: solid irradiation, water radiolysis. In the first geometry the beam gets through the sample before stopping at the surface/water interface. In the second one the beam stops before the surface/water interface. Results on the elemental releases due to the enhanced dissolution of the zirconolite surface during charged particle-induced irradiation of water are presented. Under radiolysis, an increase of one order of magnitude is observed in the Ti, Zr and Nd elemental releases. No difference in the total elemental releases can be noticed when the solid is also irradiated. (authors)

  14. Resource demand growth and sustainability due to increased world consumption

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

    Balatsky, Alexander V.; Balatsky, Galina I.; Borysov, Stanislav S.

    2015-03-20

    The paper aims at continuing the discussion on sustainability and attempts to forecast the impossibility of the expanding consumption worldwide due to the planet’s limited resources. As the population of China, India and other developing countries continue to increase, they would also require more natural and financial resources to sustain their growth. We coarsely estimate the volumes of these resources (energy, food, freshwater) and the gross domestic product (GDP) that would need to be achieved to bring the population of India and China to the current levels of consumption in the United States. We also provide estimations for potentially neededmore » immediate growth of the world resource consumption to meet this equality requirement. Given the tight historical correlation between GDP and energy consumption, the needed increase of GDP per capita in the developing world to the levels of the U.S. would deplete explored fossil fuel reserves in less than two decades. These estimates predict that the world economy would need to find a development model where growth would be achieved without heavy dependence on fossil fuels.« less

  15. Resource demand growth and sustainability due to increased world consumption

    SciTech Connect (OSTI)

    Balatsky, Alexander V.; Balatsky, Galina I.; Borysov, Stanislav S.

    2015-03-20

    The paper aims at continuing the discussion on sustainability and attempts to forecast the impossibility of the expanding consumption worldwide due to the planet’s limited resources. As the population of China, India and other developing countries continue to increase, they would also require more natural and financial resources to sustain their growth. We coarsely estimate the volumes of these resources (energy, food, freshwater) and the gross domestic product (GDP) that would need to be achieved to bring the population of India and China to the current levels of consumption in the United States. We also provide estimations for potentially needed immediate growth of the world resource consumption to meet this equality requirement. Given the tight historical correlation between GDP and energy consumption, the needed increase of GDP per capita in the developing world to the levels of the U.S. would deplete explored fossil fuel reserves in less than two decades. These estimates predict that the world economy would need to find a development model where growth would be achieved without heavy dependence on fossil fuels.

  16. Risk Due to Radiological Terror Attacks With Natural Radionuclides

    SciTech Connect (OSTI)

    Friedrich, Steinhaeusler; Lyudmila, Zaitseva; Stan, Rydell

    2008-08-07

    The naturally occurring radionuclides radium (Ra-226) and polonium (Po-210) have the potential to be used for criminal acts. Analysis of international incident data contained in the Database on Nuclear Smuggling, Theft and Orphan Radiation Sources (CSTO), operated at the University of Salzburg, shows that several acts of murder and terrorism with natural radionuclides have already been carried out in Europe and Russia. Five different modes of attack (T) are possible: (1) Covert irradiation of an individual in order to deliver a high individual dose; (2) Covert irradiation of a group of persons delivering a large collective dose; (3) Contamination of food or drink; (4) Generation of radioactive aerosols or solutions; (5) Combination of Ra-226 with conventional explosives (Dirty Bomb).This paper assesses the risk (R) of such criminal acts in terms of: (a) Probability of terrorist motivation deploying a certain attack mode T; (b) Probability of success by the terrorists for the selected attack mode T; (c) Primary damage consequence (C) to the attacked target (activity, dose); (d) Secondary damage consequence (C') to the attacked target (psychological and socio-economic effects); (e) Probability that the consequences (C, C') cannot be brought under control, resulting in a failure to manage successfully the emergency situation due to logistical and/or technical deficits in implementing adequate countermeasures. Extensive computer modelling is used to determine the potential impact of such a criminal attack on directly affected victims and on the environment.

  17. Using RPS Policies to Grow the Solar Market in the United States

    SciTech Connect (OSTI)

    Wiser, Ryan H; Wiser, Ryan H.

    2007-11-20

    York, New Hampshire, Delaware, and DC. Among those states with set-asides, two are restricted to PV applications, nine also allow solar-thermal electric to qualify, three allow solar heating and/or cooling to qualify, and three have broader renewable DG set-asides. The policies also differ in their targets and timeframes, whether projects must be located in-state, the application of cost caps, and the degree of oversight on how suppliers contract with solar projects. Only three of these states have more than two years of experience with solar or DG set-asides so far: Arizona, Nevada, and New Jersey. And yet, despite the embryonic stage of these policies, they have already begun to have a significant impact on the grid-connected PV market. From 2000-2006, 16% (or 48 MW) of grid-connected PV installations in the US occurred in states with such set-asides, a percentage that increases to 67% if one only considers PV additions outside of California. The importance of these programs is growing and will continue to expand. In fact, if one assumes (admittedly somewhat optimistically) that these policies will be fully achieved, then existing state solar or DG set-asides could result in 400 MW of solar capacity by 2010, 2,000 MW by 2015, and 6,500 MW by 2025. This equates to annual additions of roughly 100 MW through 2010, increasing to over 500 MW per year by 2015 and 700 MW per year by 2020. PV is not assured of all of this capacity, and will receive strong competition from solar-thermal electric facilities in the desert southwest. Nonetheless, set-asides in those states outside of the southwest will favor PV, and even some of the southwestern states have designed their RPS programs to ensure that PV fares well, relative to other forms of solar energy. Since 2000, Arizona and, more recently, New Jersey have represented the largest solar set-aside-driven PV markets. Even more-recent additions are coming from Colorado, Nevada, New York, and Pennsylvania. In the long-term, the

  18. Pitch-angle diffusion of electrons through growing and propagating along a magnetic field electromagnetic wave in Earth's radiation belts

    SciTech Connect (OSTI)

    Choi, C.-R. Dokgo, K.; Min, K.-W.; Woo, M.-H.; Choi, E.-J.; Hwang, J.; Park, Y.-D.; Lee, D.-Y.

    2015-06-15

    The diffusion of electrons via a linearly polarized, growing electromagnetic (EM) wave propagating along a uniform magnetic field is investigated. The diffusion of electrons that interact with the growing EM wave is investigated through the autocorrelation function of the parallel electron acceleration in several tens of electron gyration timescales, which is a relatively short time compared with the bounce time of electrons between two mirror points in Earth's radiation belts. Furthermore, the pitch-angle diffusion coefficient is derived for the resonant and non-resonant electrons, and the effect of the wave growth on the electron diffusion is discussed. The results can be applied to other problems related to local acceleration or the heating of electrons in space plasmas, such as in the radiation belts.

  19. Solutal separation in a binary nanofluid due to thermodiffusion

    SciTech Connect (OSTI)

    Saghir, M.Z.; Yousefi, T.; Farahbakhsh, B.

    2015-03-10

    Transport phenomena in porous media have received considerable attention due to an increasing interest in geothermal processes, chemical catalytic reactors, waste storage (especially geological or ocean storage of carbon dioxide), etc. Among others, oil industry has shown an increasing interest in studying diffusion phenomenon. Nanofluid is a term used to describe the suspension of low concentration of metallic and non-metallic nanoparticles in a base fluid. The size of a nanoparticle ranges from 10 to 100nm, and the conventional fluids used are water, ethylene glycol (C{sub 2}H{sub 6}O{sub 2}) or engine oil. Various studies have proven that nanoparticles improve the heat transfer of a base fluid. However, using various nanofluids it has been shown that the results could vary depending on different initial concentrations. The main objective of this paper is to study the diffusion and the thermodiffusion effect in a nanofluid for different fluid/porous media configurations. In this configuration, a liquid layer surrounds a porous layer. The full Brinkman equation coupled with the heat and mass transfer equations have been solved numerically for the porous layer using the finite element technique. The full Navier stokes equation coupled with heat and mass transfer equations have been solved for the liquid layer using the finite element method. A constraint between the liquid and porous layer has been applied to ensure heat flow and mass transfer continuity is maintained. A square cavity filled with hydrocarbon nanofluid of a mixture of fullerene-toluene with varying concentration of fullerene has been subject to different heating conditions. The entire cavity has been considered to be fully wetted with nanofluid. Results have confirmed that in the presence of a nanofluid a heat transfer enhancement is present up to certain initial concentration of the fullerene. The heat convection coefficient has been found to be 16% higher when a nanofluid is used as the working

  20. The Pyramid Lake Solution--How to Grow the Economy, Jobs and Energy with Wind, Solar, and Geothermal

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

    Desert GeoCulture / Western Biofuels Development 890 Schellbourne Street Reno, Nevada 89511 775-843-2363, 775-848-5274 (phones) 775-852-1683 (Fax) hdg-nv@sbcglobal.net The Pyramid Lake Solution How to Grow the Economy, Jobs and Energy with Wind, Solar and Geothermal High Desert GeoCulture / Western Biofuels Development 890 Schellbourne Street Reno, Nevada 89511 775-843-2363, 775-848-5274 (phones) 775-852-1683 (Fax) hdg-nv@sbcglobal.net Nevada Challenges * Diversify Core Industries * Expand

  1. Deactivation Mechanism of Cu/Zeolite SCR Catalyst Due to Reductive...

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

    Mechanism of CuZeolite SCR Catalyst Due to Reductive Hydrothermal Aging Deactivation Mechanism of CuZeolite SCR Catalyst Due to Reductive Hydrothermal Aging Better control for ...

  2. Plasmon losses due to electron-phonon scattering: The case of...

    Office of Scientific and Technical Information (OSTI)

    Plasmon losses due to electron-phonon scattering: The case of graphene encapsulated in hexagonal boron nitride Citation Details In-Document Search Title: Plasmon losses due to ...

  3. Strontium concentrations in chamisa (Chrysothamnus nauseosus) shrub plants growing in a former liquid waste disposal area in Bayo Canyon

    SciTech Connect (OSTI)

    Fresquez, P.R.; Foxx, T.S.; Naranjo, L. Jr.

    1995-11-01

    Chamisa (Chrysothamnus nauseosus) shrub plants growing in a former liquid waste disposal site Solid Waste Management Unit [SWMU] 10-003(c) in Bayo Canyon at Los Alamos National Laboratory (LANL) were collected and analyzed for strontium ({sup 90}Sr) and total uranium. Surface soil samples were also collected from below (understory) and between (interspace) shrub canopies. Both chamisa plants growing over SWMU 10-003(c) contained significantly higher concentrations of {sup 90}Sr than a control plant -- one plant, in particular, contained 90, 500 pCi {sup 90}Sr g{sup {minus}1} ash in top-growth material. Similarly, soil surface samples collected underneath and between plants contained {sup 90}Sr concentrations above background and LANL screening action levels; this probably occurred as a result of chamisa plant leaf fall contaminating the soil understory area followed by water and/or winds moving {sup 90}Sr to the soil interspace area. Although some soil surface migration of {sup 90}Sr from SWMU 10-003(c) has occurred, the level of {sup 90}Sr in sediments collected downstream of SWMU 10-003(c) at the Bayo Canyon/State Road 5 intersection was still within regional (background) concentrations.

  4. Green Button Initiative Growing

    Broader source: Energy.gov [DOE]

    The Green Button initiative, which is the common-sense idea that electricity customers should be able to securely download their own energy usage information from their utility websites, is continuing to gain traction across the country.

  5. Growing the Future Bioeconomy

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

    the Future Bioeconomy JOEL VELASCO July 2014 2 Copyright © 2012 Amyris, Inc. All rights reserved. This presentation and oral statements accompanying this presentation contain forward-looking statements, and any statements other than statements of historical facts could be deemed to be forward-looking statements. These forward-looking statements include, among other things, sizes of markets that may be addressed by Amyris's current and potential products, Amyris's expected product pipeline,

  6. Delivery Due:

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

    ... consideration of overall customer satisfaction and conclusions of informed judgment. ... a rate of 35.00 per day for a compact car. If a rental rate higher than those identified ...

  7. Growing LaAlO{sub 3}/SrTiO{sub 3} interfaces by sputter deposition

    SciTech Connect (OSTI)

    Dildar, I. M.; Neklyudova, M.; Xu, Q.; Zandbergen, H. W.; Harkema, S.; Boltje, D.; Aarts, J.

    2015-06-15

    Sputter deposition of oxide materials in a high-pressure oxygen atmosphere is a well-known technique to produce thin films of perovskite oxides in particular. Also interfaces can be fabricated, which we demonstrated recently by growing LaAlO{sub 3} on SrTiO{sub 3} substrates and showing that the interface showed the same high degree of epitaxy and atomic order as is made by pulsed laser deposition. However, the high pressure sputtering of oxides is not trivial and number of parameters are needed to be optimized for epitaxial growth. Here we elaborate on the earlier work to show that only a relatively small parameter window exists with respect to oxygen pressure, growth temperature, radiofrequency power supply and target to substrate distance. In particular the sensitivity to oxygen pressure makes it more difficult to vary the oxygen stoichiometry at the interface, yielding it insulating rather than conducting.

  8. An Approach for Assessing the Signature Quality of Various Chemical Assays when Predicting the Culture Media Used to Grow Microorganisms

    SciTech Connect (OSTI)

    Holmes, Aimee E.; Sego, Landon H.; Webb-Robertson, Bobbie-Jo M.; Kreuzer, Helen W.; Anderson, Richard M.; Unwin, Stephen D.; Weimar, Mark R.; Tardiff, Mark F.; Corley, Courtney D.

    2013-02-01

    We demonstrate an approach for assessing the quality of a signature system designed to predict the culture medium used to grow a microorganism. The system was comprised of four chemical assays designed to identify various ingredients that could be used to produce the culture medium. The analytical measurements resulting from any combination of these four assays can be used in a Bayesian network to predict the probabilities that the microorganism was grown using one of eleven culture media. We evaluated combinations of the signature system by removing one or more of the assays from the Bayes network. We measured and compared the quality of the various Bayes nets in terms of fidelity, cost, risk, and utility, a method we refer to as Signature Quality Metrics

  9. Method of growing GaN films with a low density of structural defects using an interlayer

    DOE Patents [OSTI]

    Bourret-Courchesne, Edith D.

    2003-01-01

    A dramatic reduction of the dislocation density in GaN was obtained by insertion of a single thin interlayer grown at an intermediate temperature (IT-IL) after the growth of an initial grown at high temperature. A description of the growth process is presented with characterization results aimed at understanding the mechanisms of reduction in dislocation density. A large percentage of the threading dislocations present in the first GaN epilayer are found to bend near the interlayer and do not propagate into the top layer which grows at higher temperature in a lateral growth mode. TEM studies show that the mechanisms of dislocation reduction are similar to those described for the epitaxial lateral overgrowth process, however a notable difference is the absence of coalescence boundaries.

  10. Monte Carlo Implementation Of Up- Or Down-Scattering Due To Collisions...

    Office of Scientific and Technical Information (OSTI)

    Monte Carlo Implementation Of Up- Or Down-Scattering Due To Collisions With Material At Finite Temperature Citation Details In-Document Search Title: Monte Carlo Implementation Of ...

  11. Transient heat transfer in helium II due to a sudden vacuum break

    SciTech Connect (OSTI)

    Bosque, Ernesto S.; Dhuley, Ram C.; Van Sciver, Steven W.

    2014-01-29

    To ensure future cryogenic devices meet safety and operational specifications, significant value is gained from a developed understanding of the transient heat fluxes that result from failure of an insulating vacuum jacket around a helium II (He II)-cooled device. A novel, one-dimensional experiment is successfully performed examining the phenomena immediately following a vacuum rupture onto a cryosurface. In the experiment, a fast-opening (∼10 ms) valve isolates a rigid container of ultra high purity nitrogen (N{sub 2}) gas kept at room temperature and adjustable pressure from a vertically oriented, highly evacuated (∼10{sup −3} Pa) tube roughly 1 m in length. The bottom of the evacuated tube is sealed via a 2.54 mm thick copper disk, whose bottom surface is in intimate contact with an open column of He II (∼1.8 K). The evacuated tube, disk, and He II column share a diameter of 24 mm. Opening the valve results in a vacuum rupture. N{sub 2} gas is immediately drawn into the evacuated space and cryopumped onto the disk as a growing layer of solid cryodeposit. Various coupled transient heat transfer processes proceed as the internal energy of the warm gas is transferred through the growing layer of solid N{sub 2}, through the copper disk, and into the He II column. This work examines the qualitative nature of these transient phenomena and the magnitude of the heat fluxes present through each of the series of thermal resistances.

  12. Anomalies in the theory of viscous energy losses due to shear...

    Office of Scientific and Technical Information (OSTI)

    Anomalies in the theory of viscous energy losses due to shear in rotational MEMS resonators. Citation Details In-Document Search Title: Anomalies in the theory of viscous energy ...

  13. Directives Due for Review Before 9-30-2016 - DOE Directives, Delegations,

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

    and Requirements Due for Review Before 9-30-2016 by Diane Johnson PDF document icon DirectivesUpForReview-EOFY2016.pdf - PDF document, 245 KB (251440 bytes)

  14. MODELING OF LONG-TERM FATE OF MOBILIZED FINES DUE TO DAM-EMBANKMENT...

    Office of Scientific and Technical Information (OSTI)

    MODELING OF LONG-TERM FATE OF MOBILIZED FINES DUE TO DAM-EMBANKMENT INTERFACIAL DISLOCATIONS Citation Details In-Document Search Title: MODELING OF LONG-TERM FATE OF MOBILIZED ...

  15. Vortex motion of dust particles due to non-conservative ion drag...

    Office of Scientific and Technical Information (OSTI)

    in a plasma This content will become publicly available on February 12, 2017 Title: Vortex motion of dust particles due to non-conservative ion drag force in a plasma Authors: ...

  16. MODELING OF LONG-TERM FATE OF MOBILIZED FINES DUE TO DAM-EMBANKMENT...

    Office of Scientific and Technical Information (OSTI)

    Conference: MODELING OF LONG-TERM FATE OF MOBILIZED FINES DUE TO DAM-EMBANKMENT INTERFACIAL DISLOCATIONS Citation Details In-Document Search Title: MODELING OF LONG-TERM FATE OF ...

  17. Enforcement Policy Statement: Treatment of Late-Arriving Goods Due to West

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

    Treatment of Late-Arriving Goods Due to West Coast Port Closure February 27, 2015 Closures at 29 West Coast marine ports in February 2015 due to a labor dispute have resulted in significant delays for certain goods entering the United States through those ports, including covered products and equipment subject to DOE energy or water conservation standards. Covered products and equipment subject to energy or water conservation standards must meet the standard(s) that are effective on the date

  18. Fact #668: March 28, 2011 Time Wasted Due to Traffic Congestion |

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

    Department of Energy 8: March 28, 2011 Time Wasted Due to Traffic Congestion Fact #668: March 28, 2011 Time Wasted Due to Traffic Congestion According to the Texas Transportation Institute's latest study on traffic congestion, all urban areas have experienced increased congestion in the seventeen-year period from 1982 to 2009, but congestion has changed little from 1999 to 2009. As expected, traffic congestion is worse in very large urban areas, but congestion has grown in small areas, too.

  19. Enhanced spin Seebeck effect signal due to spin-momentum locked topological

    Office of Scientific and Technical Information (OSTI)

    surface states (Journal Article) | SciTech Connect Journal Article: Enhanced spin Seebeck effect signal due to spin-momentum locked topological surface states Citation Details In-Document Search Title: Enhanced spin Seebeck effect signal due to spin-momentum locked topological surface states Spin-momentum locking in protected surface states enables efficient electrical detection of magnon decay at a magnetic-insulator/topological-insulator heterojunction. Here we demonstrate this property

  20. Study finds radioactivity around Los Alamos largely due to natural sources

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

    Radioactivity largely due to natural sources Study finds radioactivity around Los Alamos largely due to natural sources The study was subsequently peer reviewed externally by scientists at Colorado State University and internally within the Lab. December 10, 2008 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, sustainable energy sources, to plasma

  1. Program for Numerical Simulation of Beam Losses due to Interaction with Residual Gas

    SciTech Connect (OSTI)

    Karamysheva, G.; Skripka, G.

    2010-01-05

    Program for estimation of the beam losses of light ions due to interaction with the residual gas has been written. The loss of beam intensity is determined by the cross sections for loss processes respecting different ion energies and depends on the pressure of the residual gas. The beam losses due to interaction with the residual gas by the example of C400 cyclotron (IBA, Belgium) were done.

  2. High-quality permanent draft genome sequence of Bradyrhizobium sp. strain WSM1743 - an effective microsymbiont of an Indigofera sp. growing in Australia

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

    Eshraghi, Leila; De Meyer, Sofie E.; Tian, Rui; Seshadri, Rekha; Ivanova, Natalia; Pati, Amrita; Markowitz, Victor; Woyke, Tanja; Kyrpides, Nikos C.; Tiwari, Ravi; et al

    2015-10-26

    Bradyrhizobium sp. strain WSM1743 is an aerobic, motile, Gram-negative, non-spore-forming rod that can exist as a soil saprophyte or as a legume microsymbiont of an Indigofera sp. WSM1743 was isolated from a nodule recovered from the roots of an Indigofera sp. growing 20 km north of Carnarvon in Australia. It is slow growing, tolerates up to 1 % NaCl and is capable of growth at 37 °C. Here we describe the features of Bradyrhizobium sp. strain WSM1743, together with genome sequence information and its annotation. Finally, the 8,341,956 bp high-quality permanent draft genome is arranged into 163 scaffolds and 167more » contigs, contains 7908 protein-coding genes and 75 RNA-only encoding genes and was sequenced as part of the Root Nodule Bacteria chapter of the Genomic Encyclopedia of Bacteria and Archaea project.« less

  3. Consistent quantification of climate impacts due to biogenic carbon storage across a range of bio-product systems

    SciTech Connect (OSTI)

    Guest, Geoffrey Bright, Ryan M. Cherubini, Francesco Strmman, Anders H.

    2013-11-15

    Temporary and permanent carbon storage from biogenic sources is seen as a way to mitigate climate change. The aim of this work is to illustrate the need to harmonize the quantification of such mitigation across all possible storage pools in the bio- and anthroposphere. We investigate nine alternative storage cases and a wide array of bio-resource pools: from annual crops, short rotation woody crops, medium rotation temperate forests, and long rotation boreal forests. For each feedstock type and biogenic carbon storage pool, we quantify the carbon cycle climate impact due to the skewed time distribution between emission and sequestration fluxes in the bio- and anthroposphere. Additional consideration of the climate impact from albedo changes in forests is also illustrated for the boreal forest case. When characterizing climate impact with global warming potentials (GWP), we find a large variance in results which is attributed to different combinations of biomass storage and feedstock systems. The storage of biogenic carbon in any storage pool does not always confer climate benefits: even when biogenic carbon is stored long-term in durable product pools, the climate outcome may still be undesirable when the carbon is sourced from slow-growing biomass feedstock. For example, when biogenic carbon from Norway Spruce from Norway is stored in furniture with a mean life time of 43 years, a climate change impact of 0.08 kg CO{sub 2}eq per kg CO{sub 2} stored (100 year time horizon (TH)) would result. It was also found that when biogenic carbon is stored in a pool with negligible leakage to the atmosphere, the resulting GWP factor is not necessarily ? 1 CO{sub 2}eq per kg CO{sub 2} stored. As an example, when biogenic CO{sub 2} from Norway Spruce biomass is stored in geological reservoirs with no leakage, we estimate a GWP of ? 0.56 kg CO{sub 2}eq per kg CO{sub 2} stored (100 year TH) when albedo effects are also included. The large variance in GWPs across the range of

  4. Fast reconnection in high-Lundquist-number plasmas due to the plasmoid Instability

    SciTech Connect (OSTI)

    Bhattacharjee, A.; Huang Yimin; Yang, H.; Rogers, B.

    2009-11-15

    Thin current sheets in systems of large size that exceed a critical value of the Lundquist number are unstable to a super-Alfvenic tearing instability, referred to hereafter as the plasmoid instability. The scaling of the growth rate of the most rapidly growing plasmoid instability with respect to the Lundquist number is shown to follow from the classical dispersion relation for tearing modes. As a result of this instability, the system realizes a nonlinear reconnection rate that appears to be weakly dependent on the Lundquist number, and larger than the Sweet-Parker rate by nearly an order of magnitude (for the range of Lundquist numbers considered). This regime of fast reconnection is realizable in a dynamic and highly unstable thin current sheet, without requiring the current sheet to be turbulent.

  5. Better Buildings Residential Network Peer Exchange Call Series: Spring Forward: Top Strategies for Growing and Scaling Your Program (301) Call Discussion and Summary

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

    Spring Forward: Top Strategies for Growing and Scaling Your Program (301) May 26, 2016 Call and Discussion Summary Call Attendee Locations 2 Agenda  Agenda Review and Ground Rules  Opening Poll  Brief Residential Network Overview  Featured Speakers  Leif Magnuson, Residential Energy Efficiency Programs, Pacific Gas & Electric  Janja Lupse, New Jersey Program Director, & Kimberly Gharbi, Manager, Residential Account Management, CLEAResult (Network Member)  Larry

  6. High redshift signatures in the 21 cm forest due to cosmic string wakes

    SciTech Connect (OSTI)

    Tashiro, Hiroyuki; Sekiguchi, Toyokazu; Silk, Joseph E-mail: toyokazu.sekiguchi@nagoya-u.jp

    2014-01-01

    Cosmic strings induce minihalo formation in the early universe. The resultant minihalos cluster in string wakes and create a ''21 cm forest'' against the cosmic microwave background (CMB) spectrum. Such a 21 cm forest can contribute to angular fluctuations of redshifted 21 cm signals integrated along the line of sight. We calculate the root-mean-square amplitude of the 21 cm fluctuations due to strings and show that these fluctuations can dominate signals from minihalos due to primordial density fluctuations at high redshift (z?>10), even if the string tension is below the current upper bound, G? < 1.5 10{sup ?7}. Our results also predict that the Square Kilometre Array (SKA) can potentially detect the 21 cm fluctuations due to strings with G? ? 7.5 10{sup ?8} for the single frequency band case and 4.0 10{sup ?8} for the multi-frequency band case.

  7. Residual stress relief due to fatigue in tetragonal lead zirconate titanate ceramics

    SciTech Connect (OSTI)

    Hall, D. A.; Mori, T. [School of Materials, University of Manchester, Grosvenor St., Manchester M1 7HS (United Kingdom); Comyn, T. P. [Institute for Materials Research, Woodhouse Lane, University of Leeds, LS2 9JT (United Kingdom); Ringgaard, E. [Meggitt Sensing Systems, Hejreskovvej 18A, 3490 Kvistgaard (Denmark); Wright, J. P. [ESRF, 6 Rue Jules Horowitz, BP-220, 38043 Grenoble Cedex (France)

    2013-07-14

    High energy synchrotron XRD was employed to determine the lattice strain {epsilon}{l_brace}111{r_brace}and diffraction peak intensity ratio R{l_brace}200{r_brace}in tetragonal PZT ceramics, both in the virgin poled state and after a bipolar fatigue experiment. It was shown that the occurrence of microstructural damage during fatigue was accompanied by a reduction in the gradient of the {epsilon}{l_brace}111{r_brace}-cos{sup 2} {psi} plot, indicating a reduction in the level of residual stress due to poling. In contrast, the fraction of oriented 90 Degree-Sign ferroelectric domains, quantified in terms of R{l_brace}200{r_brace}, was not affected significantly by fatigue. The change in residual stress due to fatigue is interpreted in terms of a change in the average elastic stiffness of the polycrystalline matrix due to the presence of inter-granular microcracks.

  8. Frequency Shift of the Cesium Clock Transition due to Blackbody Radiation

    SciTech Connect (OSTI)

    Angstmann, E. J.; Dzuba, V. A.; Flambaum, V. V.

    2006-07-28

    We perform ab initio calculations of the frequency shift induced by a static electric field on the cesium clock hyperfine transition. The calculations are used to find the frequency shifts due to blackbody radiation. Our result [{delta}{nu}/E{sup 2}=-2.26(2)x10{sup -10} Hz/(V/m){sup 2}] is in good agreement with early measurements and ab initio calculations performed in other groups. We present arguments against recent claims that the actual value of the effect might be smaller. The difference ({approx}10%) between ab initio and semiempirical calculations is due to the contribution of the continuum spectrum in the sum over intermediate states.

  9. Radar transponder operation with compensation for distortion due to amplitude modulation

    DOE Patents [OSTI]

    Ormesher, Richard C.; Tise, Bertice L.; Axline, Jr., Robert M.

    2011-01-04

    In radar transponder operation, a variably delayed gating signal is used to gate a received radar pulse and thereby produce a corresponding gated radar pulse for transmission back to the source of the received radar pulse. This compensates for signal distortion due to amplitude modulation on the retransmitted pulse.

  10. Influence of pitch, twist, and taper on a blade`s performance loss due to roughness

    SciTech Connect (OSTI)

    Tangler, J.L.

    1996-12-31

    The purpose of this study was to determine the influence of blade geometric parameters such as pitch, twist, and taper on a blade`s sensitivity to leading edge roughness. The approach began with an evaluation of available test data of performance degradation due to roughness effects for several rotors. In addition to airfoil geometry, this evaluation suggested that a rotor`s sensitivity to roughness was also influenced by the blade geometric parameters. Parametric studies were conducted using the PROP computer code with wind-tunnel airfoil characteristics for smooth and rough surface conditions to quantify the performance loss due to roughness for tapered and twisted blades relative to a constant-chord, non-twisted blade at several blade pitch angles. The results indicate that a constant-chord, non-twisted blade pitched toward stall will have the greatest losses due to roughness. The use of twist, taper, and positive blade pitch angles all help reduce the angle-of-attack distribution along the blade for a given wind speed and the associated performance degradation due to roughness. 8 refs., 6 figs.