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Sample records for vacancy status completely

  1. Vacancy Announcement Status Report, Updated 01/09/03

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

    Organization Status Specialist DOE-NETL-15 DE-010 General Engineer GS-0801-13 SEA & PD Opens: 121514 Closed: 122914 Certificate of Eligibles Issued: 123114 Selection...

  2. Complete LNG Terminal Status Maps | Department of Energy

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

    Complete LNG Terminal Status Maps Complete LNG Terminal Status Maps A series of slides showing the status of various LNG terminals (existing, under construction, proposed, etc.) in...

  3. Complete LNG Terminal Status Maps | Department of Energy

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

    Complete LNG Terminal Status Maps Complete LNG Terminal Status Maps A series of slides showing the status of various LNG terminals (existing, under construction, proposed, etc.) in North America. Complete LNG Terminal Status Map as of December 2012 (997.96 KB) More Documents & Publications Summary of LNG Export Applications of the Lower 48 States EA-1942: Finding of No Significant Impact ORDER NO. 3413: Jordan Cove LNG

  4. Vacancies | Department of Energy

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

    About Us » Careers » Vacancies Vacancies Vacancies Interested candidates can apply to the following Office of the Inspector General job opportunities at: http://www.usajobs.gov . USAJOBS is the Federal Government's official website for federal jobs and employment information. Click on the Announcement number to view the job on USAJOBS. Announcement No: OIG-17-MP-0001 Position: Supervisory Criminal Investigator, GS-1811-15 Duty Location: Washington DC Area of Consideration: Status Candidates

  5. Vacancy announcements

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

    Vacancy announcements Alumni Link: Opportunities, News and Resources for Former Employees Latest Issue:September 2015 all issues All Issues » submit Vacancy announcements Join our team or tell a friend May 1, 2015 The site offers a variety of Los Alamos-developed biosurveillance tools that can be used for decision support in disease surveillance. The site offers a variety of Los Alamos-developed biosurveillance tools that can be used for decision support in disease surveillance. Contact Linda

  6. Vacancies | Department of Energy

    Energy Savers

    Vacancies Vacancies Job Title: Physical Scientist Series and Grade: GS-1301-1112 Job Announcement Number: DOE-MP-LM-16-00098-MP https:www.usajobs.govGetJobViewDetails...

  7. NETL: Vacancy Announcements

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

    Vacancy List Home > Careers > Job Opportunities NEED HELP APPLYING FOR A FEDERAL GOVERNMENT JOB? Getting a federal job can be a lengthy process, but the frequently asked questions will help you through the process. Subscribe to the Business, Solicitations, Jobs, Fellowship Releases, & New Student Opportunities RSS Feed. Announcement No.: SE-17-NT-00025-R-DE Who May Apply: All U.S. Citizens Series & Grade: GS-801/1301-13 This vacancy announcement is posted on USAJobs Opening Date:

  8. Vacancies in fully hydrogenated boron nitride layer: implications for functional nanodevices

    SciTech Connect (OSTI)

    Zhou, Yungang; Wang, Zhiguo; Nie, JL; Yang, Ping; Sun, Xin; Khaleel, Mohammad A.; Zu, Xiaotao; Gao, Fei

    2012-03-01

    Using density functional theory, a series of calculations of structural and electronic properties of hydrogen vacancies in a fully hydrogenated boron nitride (fH-BN) layer were conducted. By dehydrogenating the fH-BN structure, B-terminated vacancies can be created which induce complete spin polarization around the Fermi level, irrespective of the vacancy size. On the contrary, the fH-BN structure with N-terminated vacancies can be a small-gap semiconductor, a typical spin gapless semiconductor, or a metal depending on the vacancy size. Utilizing such vacancy-induced band gap and magnetism changes, possible applications in spintronics are proposed, and a special fH-BN based quantum dot device is designed.

  9. Status

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

    ... 81% - NASA Account Management System (NAMS) Integration: 70% - Authentication Integration: 21% (complete Sep 2011) * Benefits today - Smartcard login to the desktop, then get to ...

  10. Strain Control of Oxygen Vacancies in Epitaxial Strontium Cobaltite...

    Office of Scientific and Technical Information (OSTI)

    Strain Control of Oxygen Vacancies in Epitaxial Strontium Cobaltite Films Citation Details In-Document Search Title: Strain Control of Oxygen Vacancies in Epitaxial Strontium ...

  11. Vacancy induced structural changes in diamond.

    SciTech Connect (OSTI)

    Barnard, A.; Sternberg, M.; Univ. of Melbourne

    2008-01-01

    Although optically active defects in nanodiamond are being considered as candidates for optical labeling in biomedical applications, development in this area is being hindered the fact that suitable defects are rarely seen in diamond nanoparticles in the size regime required. These defects usually form as a complex with an impurity and a neutral of charged vacancy, so a measurable concentration of vacancy point defects is also necessary. Presented here are results of density functional tight binding computer simulations investigating the stability of vacancies in diamond nanoparticles with different surface structures. The results indicate that both neutral and charged vacancies alter the structure of as-grown diamond nanoparticles and are likely to diffuse out of the particle during synthesis or irradiation. We also find that suitable passivation of the particle may alleviate this problem, and hence facilitate the formation of defect complexes.

  12. EERE Job Vacancies | Department of Energy

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

    Job Vacancies EERE Job Vacancies Photo of James Forrestal Building in downtown Washington, D.C., headquarters of the U.S. Department of Energy. Do you want to build your career while changing America? EERE, the U.S. Department of Energy office leading the nation's effort to enhance energy efficiency and develop renewable energy technologies, is searching for enthusiastic, driven and committed professionals to fill the following vacant positions. To apply for a job, follow the instructions

  13. Ab initio study of small vacancy complexes in beryllium

    SciTech Connect (OSTI)

    Ganchenkova, M. G.

    2007-02-01

    The paper presents the results of ab initio calculations of formation energies of vacancy and small vacancy complexes in beryllium. Particular attention is paid to the justification of the relevant computation parameters and the evaluation of the total and vacancy formation energy convergence. The vacancy formation energy of {approx}0.8 eV is predicted. The formation of divacancies from individual vacancies is found to be energetically unfavorable irrespective of the divacancy orientation in the lattice.

  14. Status

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

    9 FOIA - Request Log 1 Closed/ Date No. Dated Date Rec'd HQ or Dir. Subject Finalized 05/19/09 001 04/07/09 04/07/09 Direct Current contracts with Visionary Solutions, LLC and CAST Specialty Transportation Incorporated, for transportation services for the Waste Isolation Pilot Plant (WIPP) Finalized 06/30/09 002 06/29/09 06/29/09 Transfer DOE/HQ (1) All documents dated from February 2001 to the present relating or referring to any labor disputes that have delayed completion of federal

  15. Method for providing oxygen ion vacancies in lanthanide oxides

    DOE Patents [OSTI]

    Kay, D. Alan R.; Wilson, William G.

    1989-12-05

    A method for desulfurization of fuel gases resulting from the incomplete combustion of sulfur containing hydrocarbons whereby the gases are treated with lanthanide oxides containing large numbers of oxygen-ion vacancies providing ionic porosity which enhances the ability of the lanthanide oxides to react more rapidly and completely with the sulfur in the fuel gases whereby the sulfur in such gases is reduced to low levels suitable for fuels for firing into boilers of power plants generating electricity with steam turbine driven generators, gas turbines, fuel cells and precursors for liquid fuels such as methanol and the like.

  16. GUIDANCE ON APPLICATION OF FEDERAL VACANCIES REFORM ACT OF 1998...

    Energy Savers

    Reform Act" or "Act") was signed into law. ( ) The Vacancies Reform Act replaces the ... A. The Vacancies Reform Act clarifies prior law, making it clear that the time limit ...

  17. Vacancy-Driven Anisotropic Defect Distribution in the Battery...

    Office of Scientific and Technical Information (OSTI)

    Vacancy-Driven Anisotropic Defect Distribution in the Battery-Cathode Material LiFePO4 Citation Details In-Document Search Title: Vacancy-Driven Anisotropic Defect Distribution in ...

  18. DOE seeks candidates for advisory board vacancies

    Energy.gov [DOE]

    DOE's Oak Ridge Office of Environmental Management is seeking volunteers to fill vacancies on the Oak Ridge Site Specific Advisory Board (ORSSAB). The board is a federally chartered citizens’ panel that provides recommendations to the agency regarding cleanup activities across the Oak Ridge Reservation.

  19. DOE seeks candidates for advisory board vacancies

    Energy.gov [DOE]

    DOE's Oak Ridge Office of EM is seeking volunteers to fill vacancies on the Oak Ridge Site Specific Advisory Board. The board is a federally chartered citizens’ panel that provides recommendations to the agency regarding cleanup activities across the Oak Ridge Reservation. The deadline for submitting applications is March 15.

  20. Vacancy sharing in strongly asymmetric heavy-ion collisions

    SciTech Connect (OSTI)

    Janev, R.K.; Krstic', P.S.; Rakovic', M.J.

    1987-04-15

    A complex-energy, complex-interaction Nikitin-like model is proposed to describe the vacancy-sharing process when many quasimolecular states are strongly coupled. The vacancy-sharing ratio is obtained in closed analytical form. The general result is used to calculate the L-K vacancy sharing in the C/sup +/+Ar, N/sup +/+Ar, and O/sup +/+Ar collisions.

  1. Strain control of oxygen vacancies in epitaxial strontium cobaltite...

    Office of Scientific and Technical Information (OSTI)

    Journal Article: Strain control of oxygen vacancies in epitaxial strontium cobaltite films ... This content will become publicly available on January 25, 2017 Title: Strain control of ...

  2. Stiffness and strength of oxygen-functionalized graphene with vacancies

    SciTech Connect (OSTI)

    Zandiatashbar, A.; Ban, E.; Picu, R. C.

    2014-11-14

    The 2D elastic modulus (E{sup 2D}) and strength (?{sup 2D}) of defective graphene sheets containing vacancies, epoxide, and hydroxyl functional groups are evaluated at 300?K by atomistic simulations. The fraction of vacancies is controlled in the range 0% to 5%, while the density of functional groups corresponds to O:C ratios in the range 0% to 25%. In-plane modulus and strength diagrams as functions of vacancy and functional group densities are generated using models with a single type of defect and with combinations of two types of defects (vacancies and functional groups). It is observed that in models containing only vacancies, the rate at which strength decreases with increasing the concentration of defects is largest, followed by models containing only epoxide groups and those with only hydroxyl groups. The effect on modulus of vacancies and epoxides present alone in the model is similar, and much stronger than that of hydroxyl groups. When the concentration of defects is large, the combined effect of the functional groups and vacancies cannot be obtained as the superposition of individual effects of the two types of defects. The elastic modulus deteriorates faster (slower) than predicted by superposition in systems containing vacancies and hydroxyl groups (vacancies and epoxide groups)

  3. Vacancy Announcement Posted for Fuel Cell Technologies Office

    Energy.gov [DOE]

    The Fuel Cell Technologies Office has posted a vacancy announcement for a position in the Hydrogen Safety, Codes, and Standards program.

  4. DOE seeks candidates for environmental advisory board vacancies

    Energy.gov [DOE]

    OREM is seeking volunteers to fill vacancies on the Oak Ridge Site Specific Advisory Board. Applications are due by Dec. 31.

  5. The Electronic Structure of Oxygen Atom Vacancy and Hydroxyl...

    Office of Scientific and Technical Information (OSTI)

    Title: The Electronic Structure of Oxygen Atom Vacancy and Hydroxyl Impurity Defects on Titanium Dioxide (110) Surface Introducing a charge into a solid such as a metal oxide ...

  6. Exploring Mesoscopic Physics of Vacancy-Ordered Systems through...

    Office of Scientific and Technical Information (OSTI)

    Exploring Mesoscopic Physics of Vacancy-Ordered Systems through Atomic Scale Observations of Topological Defects Citation Details In-Document Search Title: Exploring Mesoscopic ...

  7. Probing oxygen vacancy concentration and homogeneity in solid...

    Office of Scientific and Technical Information (OSTI)

    Here, we develop an approach for direct mapping of oxygen vacancy concentrations based on local lattice parameter measurements by scanning transmission electron microscopy. The ...

  8. Oxidation State and Interfacial Effects on Oxygen Vacancies in...

    Office of Scientific and Technical Information (OSTI)

    Oxygen Vacancies in Tantalum Pentoxide. Abstract not provided. Authors: Bondi, Robert James ; Marinella, Matthew Publication Date: 2014-10-01 OSTI Identifier: 1184499 Report...

  9. Vacancy-controlled ultrastable nanoclusters in nanostructured ferritic alloys

    DOE PAGES-Beta [OSTI]

    Zhang, Z. W.; Yao, L.; Wang, X. -L.; Miller, M. K.

    2015-05-29

    A new class of advanced structural materials, based on the Fe-O-vacancy system, has exceptional resistance to high-temperature creep and excellent tolerance to extremely high-dose radiation. Although these remarkable improvements in properties compared to steels are known to be associated with the Y-Ti-O-enriched nanoclusters, the roles of vacancies in facilitating the nucleation of nanoclusters are a long-standing puzzle, due to the experimental difficulties in characterizing vacancies, particularly in-situ while the nanoclusters are forming. We report an experiment study that provides the compelling evidence for the presence of significant concentrations of vacancies in Y-Ti-O-enriched nanoclusters in a nanostructured ferritic alloy using amore » combination of state-of-the-art atom-probe tomography and in situ small angle neutron scattering. The nucleation of nanoclusters starts from the O-enriched solute clustering with vacancy mediation. The nanoclusters grow with an extremely low growth rate through attraction of vacancies and O:vacancy pairs, leading to the unusual stability of the nanoclusters.« less

  10. Vacancy-controlled ultrastable nanoclusters in nanostructured ferritic alloys

    SciTech Connect (OSTI)

    Zhang, Z. W.; Yao, L.; Wang, X. -L.; Miller, M. K.

    2015-05-29

    A new class of advanced structural materials, based on the Fe-O-vacancy system, has exceptional resistance to high-temperature creep and excellent tolerance to extremely high-dose radiation. Although these remarkable improvements in properties compared to steels are known to be associated with the Y-Ti-O-enriched nanoclusters, the roles of vacancies in facilitating the nucleation of nanoclusters are a long-standing puzzle, due to the experimental difficulties in characterizing vacancies, particularly in-situ while the nanoclusters are forming. We report an experiment study that provides the compelling evidence for the presence of significant concentrations of vacancies in Y-Ti-O-enriched nanoclusters in a nanostructured ferritic alloy using a combination of state-of-the-art atom-probe tomography and in situ small angle neutron scattering. The nucleation of nanoclusters starts from the O-enriched solute clustering with vacancy mediation. The nanoclusters grow with an extremely low growth rate through attraction of vacancies and O:vacancy pairs, leading to the unusual stability of the nanoclusters.

  11. Completed EISs | Department of Energy

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

    Completed EISs Completed EISs Comprehensive EIS list Completed EISs (406.76 KB) More Documents & Publications Environmental Impact Statements and Environmental Assessments Status Chart NEPA Documentation 2011 ANNUAL PLANNING SUMMARY FOR ADVANCED RESEARCH AND PROJECTS AGENCY WESTERN AREA POWER ADMINISTRATION

  12. DOE seeks candidates for environmental advisory board vacancies

    Energy.gov [DOE]

    OAK RIDGE, Tenn.—The Department of Energy’s Oak Ridge Office of Environmental Management is seeking volunteers to fill vacancies on the Oak Ridge Site Specific Advisory Board (ORSSAB).

  13. Role of an Oxygen Vacancy Nanostructure on the Switchable Photovoltaic...

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

    Role of an Oxygen Vacancy Nanostructure on the Switchable Photovoltaic Effect in BiFeO3 ... Moreover, a switchable photovoltaic effect and its diode effect have been demonstrated.2 ...

  14. Vacancy Announcements Posted for Hydrogen Production and Delivery Program

    Energy.gov [DOE]

    The Fuel Cell Technologies Office has posted two vacancy announcements for a position to serve as Program Manager for the Hydrogen Production and Delivery Program in the DOE EERE Fuel Cell Technologies Office. The closing date is October 28, 2014.

  15. Strain Control of Oxygen Vacancies in Epitaxial Strontium Cobaltite Films

    Office of Scientific and Technical Information (OSTI)

    (Journal Article) | SciTech Connect Strain Control of Oxygen Vacancies in Epitaxial Strontium Cobaltite Films Citation Details In-Document Search Title: Strain Control of Oxygen Vacancies in Epitaxial Strontium Cobaltite Films The ability to manipulate oxygen anion defects rather than metal cations in complex oxides can facilitate creating new functionalities critical for emerging energy and device technologies. However, the difficulty in activating oxygen at reduced temperatures hinders the

  16. Entanglement generation of nitrogen-vacancy centers via coupling to

    Office of Scientific and Technical Information (OSTI)

    nanometer-sized resonators and a superconducting interference device (Journal Article) | SciTech Connect Entanglement generation of nitrogen-vacancy centers via coupling to nanometer-sized resonators and a superconducting interference device Citation Details In-Document Search Title: Entanglement generation of nitrogen-vacancy centers via coupling to nanometer-sized resonators and a superconducting interference device We present a potential scheme to entangle negatively charged

  17. Interaction of light with the ZnO surface: Photon induced oxygen breathing, oxygen vacancies, persistent photoconductivity, and persistent photovoltage

    SciTech Connect (OSTI)

    Gurwitz, Ron; Cohen, Rotem; Shalish, Ilan

    2014-01-21

    completes the vacancy to become a full ZnO molecule vacancy, which does not produce deep levels. Our results explain why ZnO finds use as an electrical detector for oxygen and for carbon containing gas molecules. They may also shed new light on photocatalytic uses of ZnO. It is suggested that similar surface phenomena may affect other semiconducting oxides.

  18. Shallow halogen vacancies in halide optoelectronic materials

    DOE PAGES-Beta [OSTI]

    Shi, Hongliang; Du, Mao -Hua

    2014-11-05

    Halogen vacancies (VH) are usually deep color centers (F centers) in halides and can act as major electron traps or recombination centers. The deep VH contributes to the typically poor carrier transport properties in halides. However, several halides have recently emerged as excellent optoelectronic materials, e.g., CH3NH3PbI3 and TlBr. Both CH3NH3PbI3 and TlBr have been found to have shallow VH, in contrast to commonly seen deep VH in halides. In this paper, several halide optoelectronic materials, i.e., CH3NH3PbI3, CH3NH3SnI3 (photovoltaic materials), TlBr, and CsPbBr3, (gamma-ray detection materials) are studied to understand the material chemistry and structure that determine whether VHmore » is a shallow or deep defect in a halide material. It is found that crystal structure and chemistry of ns2 ions both play important roles in creating shallow VH in halides such as CH3NH3PbI3, CH3NH3SnI3, and TlBr. The key to identifying halides with shallow VH is to find the right crystal structures and compounds that suppress cation orbital hybridization at VH, such as those with long cation-cation distances and low anion coordination numbers, and those with crystal symmetry that prevents strong hybridization of cation dangling bond orbitals at VH. Furthermore, the results of this paper provide insight and guidance to identifying halides with shallow VH as good electronic and optoelectronic materials.« less

  19. COMPLETE LISTING:

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

    COMPLETE LISTING: DISPOSITION AUTHORITIES FROZEN UNDER THE EPIDEMIOLOGICAL MORATORIUM MARCH 2008 Listed below are all the disposition authorities which are under the moratorium on the destruction of health related records as of March 2008. All records scheduled under these authorities at Department of Energy (DOE) headquarters and field sites should be preserved past their normal retention periods unless an headquarters organization or a field site has obtained permission to remove records

  20. Chemical expansion affected oxygen vacancy stability in different oxide structures from first principles calculations

    SciTech Connect (OSTI)

    Aidhy, Dilpuneet S.; Liu, Bin; Zhang, Yanwen; Weber, William J.

    2015-03-01

    We study the chemical expansion for neutral and charged oxygen vacancies in fluorite, rocksalt, perovskite and pyrochlores materials using first principles calculations. We show that the neutral oxygen vacancy leads to lattice expansion whereas the charged vacancy leads to lattice contraction. In addition, we show that there is a window of strain within which an oxygen vacancy is stable; beyond that range, the vacancy can become unstable. Using CeO2|ZrO2 interface structure as an example, we show that the concentration of oxygen vacancies can be manipulated via strain, and the vacancies can be preferentially stabilized. These results could serve as guiding principles in predicting oxygen vacancy stability in strained systems and in the design of vacancy stabilized materials.

  1. Chemical expansion affected oxygen vacancy stability in different oxide structures from first principles calculations

    DOE PAGES-Beta [OSTI]

    Aidhy, Dilpuneet S.; Liu, Bin; Zhang, Yanwen; Weber, William J.

    2015-01-21

    We study the chemical expansion for neutral and charged oxygen vacancies in fluorite, rocksalt, perovskite and pyrochlores materials using first principles calculations. We show that the neutral oxygen vacancy leads to lattice expansion whereas the charged vacancy leads to lattice contraction. In addition, we show that there is a window of strain within which an oxygen vacancy is stable; beyond that range, the vacancy can become unstable. Using CeO2|ZrO2 interface structure as an example, we show that the concentration of oxygen vacancies can be manipulated via strain, and the vacancies can be preferentially stabilized. Furthermore, these results could serve asmore » guiding principles in predicting oxygen vacancy stability in strained systems and in the design of vacancy stabilized materials.« less

  2. Chemistry - Oxygen Vacancies and Catalysis on Ceria Surfaces

    SciTech Connect (OSTI)

    Campbell, Charles T.; Peden, Charles HF.

    2005-07-29

    Chemistry occurring at the surface of metal oxides is critical in a variety of industrial applications including catalysis and photocatalysis, optical display technology, solar energy devices and corrosion prevention. Defects have long been recognized to be the most reactive sites on the surfaces of many oxide materials. The most common types of defects present on the surfaces of metal oxides are oxygen vacancies and step edges. The nature of surface oxygen vacancies, and their number, distribution and diffusion across the surface of oxides, are thus issues of major scientific importance. One of the most interesting oxides in this respect is CeO2, since oxygen vacancies play the key role in giving this material it's industrially important ''oxygen-storage capacity''. This capacity makes modern automotive exhaust treatment catalysts containing CeO2 much more effective than their predecessors without CeO2. Ceria is also well known as a support which enhances the performance of transition metal catalysts, relative to other oxide supports, in a variety of other reactions including water-gas shift, steam reforming of oxygenates and PROX 1-7, all of which hold promise for enabling a hydrogen economy 1. Related to ceria's facile redox capacity (ability to rapidly form and eliminate oxygen vacancy defects) is the poorly understood observation that some less reducible oxides, such as zirconia (ZrO2), are used as additives that actually enhance this ''oxygen storage'' property of CeO2. In this issue, Esch and coworkers in Trieste, Italy report an exciting study that for the first time clearly elucidates the structure, distribution and formation of oxygen vacancies on a cerium oxide surface 8. They have elegantly combined beautiful, atomic-resolution imaging using scanning-tunneling microscopy (STM) on a ceria surface with state-of-the-art quantum mechanical calculations using Density Functional Theory (DFT) to raise our understanding of CeO2 surfaces to a much higher level

  3. Shallow halogen vacancies in halide optoelectronic materials

    SciTech Connect (OSTI)

    Shi, Hongliang; Du, Mao -Hua

    2014-11-05

    Halogen vacancies (VH) are usually deep color centers (F centers) in halides and can act as major electron traps or recombination centers. The deep VH contributes to the typically poor carrier transport properties in halides. However, several halides have recently emerged as excellent optoelectronic materials, e.g., CH3NH3PbI3 and TlBr. Both CH3NH3PbI3 and TlBr have been found to have shallow VH, in contrast to commonly seen deep VH in halides. In this paper, several halide optoelectronic materials, i.e., CH3NH3PbI3, CH3NH3SnI3 (photovoltaic materials), TlBr, and CsPbBr3, (gamma-ray detection materials) are studied to understand the material chemistry and structure that determine whether VH is a shallow or deep defect in a halide material. It is found that crystal structure and chemistry of ns2 ions both play important roles in creating shallow VH in halides such as CH3NH3PbI3, CH3NH3SnI3, and TlBr. The key to identifying halides with shallow VH is to find the right crystal structures and compounds that suppress cation orbital hybridization at VH, such as those with long cation-cation distances and low anion coordination numbers, and those with crystal symmetry that prevents strong hybridization of cation dangling bond orbitals at VH. Furthermore, the results of this paper provide insight and guidance to identifying halides with shallow VH as good electronic and optoelectronic materials.

  4. GUIDANCE ON APPLICATION OF FEDERAL VACANCIES REFORM ACT OF 1998 Page 1 of 13

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

    APPLICATION OF FEDERAL VACANCIES REFORM ACT OF 1998 Page 1 of 13 GUIDANCE ON APPLICATION OF FEDERAL VACANCIES REFORM ACT OF 1998 This memorandum provides guidance on the application of the Federal Vacancies Reform Act of1998 to vacancies in Senate-confirmed offices within the executive branch. March 22, 1999 MEMORANDUM FOR AGENCY GENERAL COUNSELS On October 21, 1998, the Federal Vacancies Reform Act of 1998 ("Vacancies Reform Act" or "Act") was signed into law. ( ) The

  5. Vacancy dynamic in Ni-Mn-Ga ferromagnetic shape memory alloys

    SciTech Connect (OSTI)

    Merida, D.; Snchez-Alarcos, V.; Prez-Landazbal, J. I.; Recarte, V.; Plazaola, F.

    2014-06-09

    Vacancies control any atomic ordering process and consequently most of the order-dependent properties of the martensitic transformation in ferromagnetic shape memory alloys. Positron annihilation spectroscopy demonstrates to be a powerful technique to study vacancies in NiMnGa alloys quenched from different temperatures and subjected to post-quench isothermal annealing treatments. Considering an effective vacancy type the temperature dependence of the vacancy concentration has been evaluated. Samples quenched from 1173?K show a vacancy concentration of 1100??200?ppm. The vacancy migration and formation energies have been estimated to be 0.55??0.05?eV and 0.90??0.07?eV, respectively.

  6. Orbital reconstruction in a self-assembled oxygen vacancy nanostructure

    DOE PAGES-Beta [OSTI]

    Jang, H.; Kerr, G.; Lim, J. S.; Yang, C. -H.; Kao, C. -C.; Lee, J. -S.

    2015-07-27

    We demonstrate the microscopic role of oxygen vacancies spatially confined within nanometer inter-spacing (about 1nm) in BiFeO₃, using resonant soft X-ray scattering techniques and soft X-ray spectroscopy measurements. Such vacancy confinements and total number of vacancy are controlled by substitution of Ca²⁺ for Bi³⁺ cation. We found that by increasing the substitution, the in-plane orbital bands of Fe³⁺ cations are reconstructed without any redox reaction. It leads to a reduction of the hopping between Fe atoms, forming a localized valence band, in particular Fe 3d-electronic structure, around the Fermi level. This band localization causes to decrease the conductivity of themore » doped BiFeO₃ system.« less

  7. Orbital reconstruction in a self-assembled oxygen vacancy nanostructure

    SciTech Connect (OSTI)

    Jang, H.; Kerr, G.; Lim, J. S.; Yang, C. -H.; Kao, C. -C.; Lee, J. -S.

    2015-07-27

    We demonstrate the microscopic role of oxygen vacancies spatially confined within nanometer inter-spacing (about 1nm) in BiFeO₃, using resonant soft X-ray scattering techniques and soft X-ray spectroscopy measurements. Such vacancy confinements and total number of vacancy are controlled by substitution of Ca²⁺ for Bi³⁺ cation. We found that by increasing the substitution, the in-plane orbital bands of Fe³⁺ cations are reconstructed without any redox reaction. It leads to a reduction of the hopping between Fe atoms, forming a localized valence band, in particular Fe 3d-electronic structure, around the Fermi level. This band localization causes to decrease the conductivity of the doped BiFeO₃ system.

  8. Mechanism of vacancy formation induced by hydrogen in tungsten

    SciTech Connect (OSTI)

    Liu, Yi-Nan; Association EURATOM-TEKES, University of Helsinki, Helsinki, PO Box 64, 00560 ; Ahlgren, T.; Bukonte, L.; Nordlund, K.; Shu, Xiaolin; Yu, Yi; Lu, Guang-Hong; Li, Xiao-Chun

    2013-12-15

    We report a hydrogen induced vacancy formation mechanism in tungsten based on classical molecular dynamics simulations. We demonstrate the vacancy formation in tungsten due to the presence of hydrogen associated directly with a stable hexagonal self-interstitial cluster as well as a linear crowdion. The stability of different self-interstitial structures has been further studied and it is particularly shown that hydrogen plays a crucial role in determining the configuration of SIAs, in which the hexagonal cluster structure is preferred. Energetic analysis has been carried out to prove that the formation of SIA clusters facilitates the formation of vacancies. Such a mechanism contributes to the understanding of the early stage of the hydrogen blistering in tungsten under a fusion reactor environment.

  9. Legacy Clean-up Completion Project Overview | Department of Energy

    Office of Environmental Management (EM)

    Legacy Clean-up Completion Project Overview Legacy Clean-up Completion Project Overview Topic: Bob Pfaff provided the members with information regarding the status of the Fiscal ...

  10. Guidance_Application_Federal_Vacancies_Reform_Act_1998.pdf | Department of

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

    Energy Guidance_Application_Federal_Vacancies_Reform_Act_1998.pdf Guidance_Application_Federal_Vacancies_Reform_Act_1998.pdf Guidance_Application_Federal_Vacancies_Reform_Act_1998.pdf (2.66 MB) More Documents & Publications Intelligence Reform and Terrorism Prevention Act - December 17, 2004 Bond Amendment, Security Clearances - January 1, 2008 National Historic Preservation Act (1966, amended 2014

  11. Vacancies in ordered and disordered titanium monoxide: Mechanism of B1 structure stabilization

    SciTech Connect (OSTI)

    Kostenko, M.G.; Lukoyanov, A.V.; Zhukov, V.P.; Rempel, A.A.

    2013-08-15

    The electronic structure and stability of three phases of titanium monoxide TiO{sub y} with B1 type of the basic structure have been studied. Cubic phase without structural vacancies, TiO, and two phases with structural vacancies, monoclinic Ti{sub 5}O{sub 5} and cubic disordered TiO{sub 1.0}, was treated by means of first-principles calculations within the density functional theory with pseudo-potential approach based on the plane wave's basis. The ordered monoclinic phase Ti{sub 5}O{sub 5} was found to be the most stable and the cubic TiO without vacancies the less stable one. The role of structural vacancies in the titanium sublattice is to decrease the Fermi energy, the role of vacancies in the oxygen sublattice is to contribute to the appearance of Ti–Ti bonding interactions through these vacancies and to reinforce the Ti–Ti interactions close to them. Listed effects are significantly pronounced if the vacancies in the titanium and oxygen sublattices are associated in the so called “vacancy channels” which determine the formation of vacancy ordered structure of monoclinic Ti{sub 5}O{sub 5}-type. - Graphical abstract: Changes in total DOS of titanium monoxide when going from vacancy-free TiO to TiO with disordered structural vacancies and to TiO with ordered structural vacancies. Highlights: • Ordered monoclinic Ti{sub 5}O{sub 5} is the most stable phase of titanium monoxide. • Vacancy-free TiO is the less stable phase of the titanium monoxide. • Ordering of oxygen vacancies leads to the appearance of Ti–Ti bonding interactions. • Titanium vacancies contribute significantly to the decreasing of the Fermi energy.

  12. Real Space Mapping of Oxygen Vacancy Diffusion and Electrochemical

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

    Transformations by Hysteretic Current Reversal Curve Measurements - Energy Innovation Portal Hydrogen and Fuel Cell Hydrogen and Fuel Cell Energy Storage Energy Storage Find More Like This Return to Search Real Space Mapping of Oxygen Vacancy Diffusion and Electrochemical Transformations by Hysteretic Current Reversal Curve Measurements Oak Ridge National Laboratory Contact ORNL About This Technology Technology Marketing SummaryElectrochemical energy storage and conversion systems based on

  13. Property:CSC-Status | Open Energy Information

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

    navigation, search Property Name CSC-Status Property Type String Description Geothermal Case Study Challenge (CSC) sign-up status Allows Values Available;Completed;Selected Pages...

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    For Users Live Status Queue Look Classic Queue Look Scheduled Outages Outage Log Science Gateway Status Login Node Status Filesystem Status My NERSC Move to CRT Getting Started...

  15. Strain control of oxygen vacancies in epitaxial strontium cobaltite films

    DOE PAGES-Beta [OSTI]

    Jeen, Hyoung Jeen; Choi, Woo Seok; Reboredo, Fernando A.; Freeland, John W.; Eres, Gyula; Lee, Ho Nyung; Petrie, Jonathan R.; Mitra, Chandrima; Meyer, Tricia L.

    2016-01-25

    In this study, the ability to manipulate oxygen anion defects rather than metal cations in complex oxides can facilitate creating new functionalities critical for emerging energy and device technologies. However, the difficulty in activating oxygen at reduced temperatures hinders the deliberate control of important defects, oxygen vacancies. Here, strontium cobaltite (SrCoOx) is used to demonstrate that epitaxial strain is a powerful tool for manipulating the oxygen vacancy concentration even under highly oxidizing environments and at annealing temperatures as low as 300 °C. By applying a small biaxial tensile strain (2%), the oxygen activation energy barrier decreases by ≈30%, resulting inmore » a tunable oxygen deficient steady-state under conditions that would normally fully oxidize unstrained cobaltite. These strain-induced changes in oxygen stoichiometry drive the cobaltite from a ferromagnetic metal towards an antiferromagnetic insulator. The ability to decouple the oxygen vacancy concentration from its typical dependence on the operational environment is useful for effectively designing oxides materials with a specific oxygen stoichiometry.« less

  16. Active DOE Completed Projects

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

    Completed) Project Number Title Document ID SLM / ORG Author / Phone / Email Status / Review Date P1137-2007REV Fire ProtecƟon Engineering FAQS DOE-STD-1137-2014 Karen Boardman (NNSA) P1181-2004REV Facility Maintenance Management DOE-STD-1181-2014 Karen Boardman FuncƟon Area QualiĮcaƟon Standard (HS-70) P1182-2004REV Civil Structural Engineering, FuncƟonal DOE-STD-1182-2014 Karen Boardman Area QualiĮcaƟon Standard (AU-70) P2013-03 ProtecƟve Force ConƟngency Planning DOE-HDBK-1213-2014

  17. Lattice distortions and oxygen vacancies produced in Au+ irradiated nano-crystalline cubic zirconia

    SciTech Connect (OSTI)

    Edmondson, Philip D; Weber, William J; Namavar, Fereydoon; Zhang, Yanwen

    2011-01-01

    The structural impact of oxygen vacancies in nanocrystalline cubic zirconia is investigated. A non-equilibrium number of oxygen vacancies in introduced to the lattice by ion irradiation. The lattice is observed to be initially compressed, undergoes a relaxation at 0.7 displacements per atom (dpa), and experiences a contraction before reaching a temperature dependent steady state value at above 7 dpa. The level of lattice distortion is related to the charge state of the accumulating oxygen vacancies.

  18. Entangling separate nitrogen-vacancy centers in a scalable fashion via

    Office of Scientific and Technical Information (OSTI)

    coupling to microtoroidal resonators (Journal Article) | SciTech Connect Entangling separate nitrogen-vacancy centers in a scalable fashion via coupling to microtoroidal resonators Citation Details In-Document Search Title: Entangling separate nitrogen-vacancy centers in a scalable fashion via coupling to microtoroidal resonators We propose a potentially practical scheme to entangle negatively charged nitrogen-vacancy (N-V) centers in distant diamonds. Each diamond is supposed to be fixed on

  19. Nanodiamond-based nanostructures for coupling nitrogen-vacancy centres to

    Office of Scientific and Technical Information (OSTI)

    metal nanoparticles and semiconductor quantum dots (Journal Article) | SciTech Connect Nanodiamond-based nanostructures for coupling nitrogen-vacancy centres to metal nanoparticles and semiconductor quantum dots Citation Details In-Document Search Title: Nanodiamond-based nanostructures for coupling nitrogen-vacancy centres to metal nanoparticles and semiconductor quantum dots The ability to control the interaction between nitrogen-vacancy centres in diamond and photonic and/or broadband

  20. Oxygen vacancy ordering within anion-deficient Ceria

    SciTech Connect (OSTI)

    Hull, S.; Norberg, S.T.; Ahmed, I.; Eriksson, S.G.; Marrocchelli, D.; Madden, P.A.

    2009-10-15

    The structural properties of anion deficient ceria, CeO{sub 2-{delta}}, have been studied as a function of oxygen partial pressure, p(O{sub 2}), over the range 0>=log{sub 10p}(O{sub 2})>=-18.9 at 1273(2) K using the neutron powder diffraction technique. Rietveld refinement of the diffraction data collected on decreasing p(O{sub 2}) showed increases in the cubic lattice parameter, a, the oxygen nonstoichiometry, delta, and the isotropic thermal vibration parameters, u{sub Ce} and u{sub O}, starting at log{sub 10p}(O{sub 2}){approx}-11. The increases are continuous, but show a distinct kink at log{sub 10p}(O{sub 2}){approx}-14.5. Analysis of the total scattering (Bragg plus diffuse components) using reverse Monte Carlo (RMC) modelling indicates that the O{sup 2-} vacancies preferentially align as pairs in the <111> cubic directions as the degree of nonstoichiometry increases. This behaviour is discussed with reference to the chemical crystallography of the CeO{sub 2}-Ce{sub 2}O{sub 3} system at ambient temperature and, in particular, to the nature of the long-range ordering of O{sup 2-} vacancies within the crystal structure of Ce{sub 7}O{sub 12}. - Graphical abstract: Partial radial distribution function for oxygen vacancies within CeO{sub 1.710} at 1273 K (solid line) showing the increased tendency for local ordering in <111> directions compared to a random distribution (dashed line).

  1. Vacancy defects in as-grown and neutron irradiated GaP studied by positrons

    SciTech Connect (OSTI)

    Dlubek, G.; Bruemmer, O.; Polity, A.

    1986-08-18

    Positron lifetime and Doppler-broadening measurements have been used to study vacancy defects in n-italic-type GaP. Vacancies in the P sublattice with a concentration of some 10/sup 17/ cm/sup -3/ were observed in as-grwon GaP. The vacancies disappear during annealing at 500--800 /sup 0/C. In neutron-irradiated GaP positrons are trapped by Ga vacancies which anneal out in two stages situated at 300--550 /sup 0/C and 550--700 /sup 0/C.

  2. Lattice Distortions and Oxygen Vacancies Produced in Au+-Irradiated Nanocrystalline Cubic Zirconia

    SciTech Connect (OSTI)

    Edmondson, P. D.; Weber, William J.; Namavar, Fereydoon; Zhang, Yanwen

    2011-07-13

    The oxygen ion conductivity, attributed to an oxygen vacancy mechanism, of yttria-stabilized zirconia membranes used in solid oxide fuel cells is restricted due to trapping limitations. In this work, a high concentration of oxygen vacancies has been deliberately introduced into nanocrystalline stabilizer-free zirconia through ion-irradiation. Oxygen vacancies with different charge states can be produced by varying irradiation temperatures. Due to the reduced trapping sites and high oxygen vacancy concentration, this work suggests that the efficiency of solid oxide fuel cells can be improved.

  3. Migration of defect clusters and xenon-vacancy clusters in uranium dioxide

    SciTech Connect (OSTI)

    Chen, Dong; Gao, Fei; Deng, Huiqiu; Hu, Wangyu; Sun, Xin

    2014-07-01

    The possible transition states, minimum energy paths and migration mechanisms of defect clusters and xenon-vacancy defect clusters in uranium dioxide have been investigated using the dimer and the nudged elastic-band methods. The nearby O atom can easily hop into the oxygen vacancy position by overcoming a small energy barrier, which is much lower than that for the migration of a uranium vacancy. A simulation for a vacancy cluster consisting of two oxygen vacancies reveals that the energy barrier of the divacancy migration tends to decrease with increasing the separation distance of divacancy. For an oxygen interstitial, the migration barrier for the hopping mechanism is almost three times larger than that for the exchange mechanism. Xe moving between two interstitial sites is unlikely a dominant migration mechanism considering the higher energy barrier. A net migration process of a Xe-vacancy pair containing an oxygen vacancy and a xenon interstitial is identified by the NEB method. We expect the oxygen vacancy-assisted migration mechanism to possibly lead to a long distance migration of the Xe interstitials in UO2. The migration of defect clusters involving Xe substitution indicates that Xe atom migrating away from the uranium vacancy site is difficult.

  4. Alignment of the diamond nitrogen vacancy center by strain engineering

    SciTech Connect (OSTI)

    Karin, Todd [Department of Physics, University of Washington, Seattle, Washington 98195 (United States); Dunham, Scott [Department of Electrical Engineering, University of Washington, Seattle, Washington 98195 (United States); Fu, Kai-Mei [Department of Physics, University of Washington, Seattle, Washington 98195 (United States); Department of Electrical Engineering, University of Washington, Seattle, Washington 98195 (United States)

    2014-08-04

    The nitrogen vacancy (NV) center in diamond is a sensitive probe of magnetic field and a promising qubit candidate for quantum information processing. The performance of many NV-based devices improves by aligning the NV(s) parallel to a single crystallographic direction. Using ab initio theoretical techniques, we show that NV orientation can be controlled by high-temperature annealing in the presence of strain under currently accessible experimental conditions. We find that (89??7)% of NVs align along the [111] crystallographic direction under 2% compressive biaxial strain (perpendicular to [111]) and an annealing temperature of 970?C.

  5. Metallic filament formation by aligned oxygen vacancies in ZnO-based resistive switches

    SciTech Connect (OSTI)

    Gu, Tingkun

    2014-05-28

    The electronic structure of ZnO with defects of oxygen vacancies were investigated by using first-principles methods. Some structure models were constructed in order to investigate the effects of the distribution of oxygen vacancies on the electronic properties of ZnO. By analyzing the calculated results, we found that only the aligned oxygen vacancies can form the conducting channel in ZnO, and the transformation of the oxygen vacancy from charged state to neutral state is consistent with the energetics rule of the forming aligned oxygen vacancies. As for the heterojunction of Pt/ZnO/Pt, the oxygen vacancies near the interface of Pt/ZnO depress the local Schottky barrier effectively, and the aligned oxygen vacancies in ZnO form a conducting filament connecting two Pt electrodes. The metallic filament formation in Pt/ZnO/Pt resistive switching cells should be closely related to the carrier injection from Pt electrode into ZnO and the arrangement of oxygen vacancies in ZnO slab.

  6. Coloration and oxygen vacancies in wide band gap oxide semiconductors: Absorption at metallic nanoparticles induced by vacancy clustering—A case study on indium oxide

    SciTech Connect (OSTI)

    Albrecht, M. Schewski, R.; Irmscher, K.; Galazka, Z.; Markurt, T.; Naumann, M.; Schulz, T.; Uecker, R.; Fornari, R.; Meuret, S.; Kociak, M.

    2014-02-07

    In this paper, we show by optical and electron microscopy based investigations that vacancies in oxides may cluster and form metallic nanoparticles that induce coloration by extinction of visible light. Optical extinction in this case is caused by generation of localized surface plasmon resonances at metallic particles embedded in the dielectric matrix. Based on Mie's approach, we are able to fit the absorption due to indium nanoparticles in In{sub 2}O{sub 3} to our absorption measurements. The experimentally found particle distribution is in excellent agreement with the one obtained from fitting by Mie theory. Indium particles are formed by precipitation of oxygen vacancies. From basic thermodynamic consideration and assuming theoretically calculated activation energies for vacancy formation and migration, we find that the majority of oxygen vacancies form just below the melting point. Since they are ionized at this temperature they are Coulomb repulsive. Upon cooling, a high supersaturation of oxygen vacancies forms in the crystal that precipitates once the Fermi level crosses the transition energy level from the charged to the neutral charge state. From our considerations we find that the ionization energy of the oxygen vacancy must be higher than 200 meV.

  7. Computer simulation study of the structure of vacancies in grain boundaries

    SciTech Connect (OSTI)

    Brokman, A.; Bristowe, P.D.; Balluffi, R.W.

    1981-01-01

    The structure of vacancies in grain boundaries has been investigated by computer molecular statics employing pairwise potentials. In order to gain an impression of the vacancy structures which may occur generally, a number of variables was investigated including: metal type, boundary type, degree of lattice coincidence and choice of boundary site. In all cases the vacancies remained as distinguishable point defects in the relatively irregular boundary structures. However, it was found that the vacancy often induced relatively large atomic displacements in the core of the boundary. These displacements often occurred only in the direct vicinity of the vacancy, but in certain cases they were widely distributed in the boundary, sometimes at surprisingly large distances.

  8. Ab initio study of formation, migration and binding properties of helium-vacancy clusters in aluminum

    SciTech Connect (OSTI)

    Yang, Li; Zu, Xiaotao T.; Gao, Fei

    2008-08-01

    Ab initio calculations based on density functional theory have been performed to study the dissolution and migration of helium, and the stability of small helium-vacancy clusters HenVm (n, m=0 to 4) in aluminum. The results indicate that the octahedral configuration is more stable than the tetrahedral. Interstitial helium atoms are predicted to have attractive interactions and jump between two octahedral sites via an intermediate tetrahedral site with low migration energy of 0.10 eV. The binding energies of an interstitial He atom and an isolated vacancy to a HenVm cluster are also obtained from the calculated formation energies of the clusters. We find that the divacancy and tri--vacancy clusters are not stable, but He atoms can increase the stability of vacancy clusters. The interactions of He atoms with a vacancy are found to be in good agreement with the experimental results.

  9. First principle study of structural, electronic and magnetic properties of zigzag boron nitride nanoribbon: Role of vacancies

    SciTech Connect (OSTI)

    Kumar, Arun; Bahadur, Amar; Mishra, Madhukar; Vasudeva, Neena

    2015-05-15

    We study the effect of vacancies on the structural, electronic and magnetic properties of zigzag boron nitride nanoribbon (ZBNNR) by using first principle calculations. We find that the shift of the vacancies with respect to the ribbon edges causes change in the structural geometry, electronic structure and magnetization of ZBNNR. These vacancies also produce band gap modulation and consequently results the magnetization of ZBNNR.

  10. Reaction Kinetics of Water Molecules with Oxygen Vacancies on Rutile TiO2(110)

    SciTech Connect (OSTI)

    Petrik, Nikolay G.; Kimmel, Gregory A.

    2015-09-16

    The formation of bridging hydroxyls (OHb) via reactions of water molecules with oxygen vacancies (VO) on reduced TiO2(110) surfaces is studied using infrared reflection-absorption spectroscopy (IRAS), electron-stimulated desorption (ESD), and photon-stimulated desorption (PSD). Narrow IRAS peaks at 2737 cm-1 and 3711 cm-1 are observed for stretching vibrations of ODb and OHb on TiO2(110), respectively. IRAS measurements with s- and p-polarized light demonstrate that the bridging hydroxyls are oriented normal to the (110) surface. The IR peaks disappear after the sample is exposed to O2 or annealed in the temperature range of 400 – 600 K (correlating with the temperature at which pairs of OHb’s reform water and then desorb), which is consistent with their identification as bridging hydroxyls. We have studied the kinetics of water reacting with the vacancies by monitoring the formation of bridging hydroxyls (using IRAS) as a function of the annealing temperature for a small amount of water initially dosed on the TiO2(110) at low temperature. Separate experiments have also monitored the loss of water molecules (using water ESD) and vacancies (using the CO photooxidation reaction) due to the reactions of water molecules with the vacancies. All three techniques show that the reaction rate becomes appreciable for T > 150 K and that the reactions largely complete for T > 250 K. The temperature-dependent water-VO reaction kinetics are consistent with a Gaussian distribution of activation energies with Ea = 0.545 eV, ΔEa(FWHM) = 0.125 eV, and a “normal” prefactor, v = 1012 s-1. In contrast, a single activation energy with a physically reasonable prefactor does not fit the data well. Our experimental activation energy is close to theoretical estimates for the diffusion of water molecules along the Ti5c rows on the reduced TiO2

  11. Strategies to Suppress Cation Vacancies in Metal Oxide Alloys: Consequences for Solar Energy Conversion

    SciTech Connect (OSTI)

    Toroker, Maytal; Carter, Emily A.

    2015-09-01

    First-row transition metal oxides (TMOs) are promising alternative materials for inexpensive and efficient solar energy conversion. However, their conversion efficiency can be deleteriously affected by material imperfections, such as atomic vacancies. In this work, we provide examples showing that in some iron-containing TMOs, iron cation vacancy formation can be suppressed via alloying. We calculate within density functional theory+U theory the iron vacancy formation energy in binary rock-salt oxide alloys that contain iron, manganese, nickel, zinc, and/or magnesium. We demonstrate that formation of iron vacancies is less favorable if we choose to alloy iron(II) oxide with metals that cannot readily accept vacancy-generated holes, e.g., magnesium, manganese, nickel, or zinc. Since there are less available sites for holes and the holes are forced to reside on iron cations, the driving force for iron vacancy formation decreases. These results are consistent with an experiment observing a sharp drop in cation vacancy concentration upon alloying iron(II) oxide with manganese.

  12. Impact of homogeneous strain on uranium vacancy diffusion in uranium dioxide

    SciTech Connect (OSTI)

    Goyal, Anuj; Phillpot, Simon R.; Subramanian, Gopinath; Andersson, David A.; Stanek, Chris R.; Uberuaga, Blas P.

    2015-03-03

    We present a detailed mechanism of, and the effect of homogeneous strains on, the migration of uranium vacancies in UO2. Vacancy migration pathways and barriers are identified using density functional theory and the effect of uniform strain fields are accounted for using the dipole tensor approach. We report complex migration pathways and noncubic symmetry associated with the uranium vacancy in UO2 and show that these complexities need to be carefully accounted for to predict the correct diffusion behavior of uranium vacancies. We show that under homogeneous strain fields, only the dipole tensor of the saddle with respect to the minimum is required to correctly predict the change in the energy barrier between the strained and the unstrained case. Diffusivities are computed using kinetic Monte Carlo simulations for both neutral and fully charged state of uranium single and divacancies. We calculate the effect of strain on migration barriers in the temperature range 8001800 K for both vacancy types. Homogeneous strains as small as 2% have a considerable effect on diffusivity of both single and divacancies of uranium, with the effect of strain being more pronounced for single vacancies than divacancies. In contrast, the response of a given defect to strain is less sensitive to changes in the charge state of the defect. Further, strain leads to anisotropies in the mobility of the vacancy and the degree of anisotropy is very sensitive to the nature of the applied strain field for strain of equal magnitude. Our results indicate that the influence of strain on vacancy diffusivity will be significantly greater when single vacancies dominate the defect structure, such as sintering, while the effects will be much less substantial under irradiation conditions where divacancies dominate.

  13. Impact of homogeneous strain on uranium vacancy diffusion in uranium dioxide

    SciTech Connect (OSTI)

    Goyal, Anuj; Phillpot, Simon R.; Subramanian, Gopinath; Andersson, David A.; Stanek, Chris R.; Uberuaga, Blas P.

    2015-03-03

    We present a detailed mechanism of, and the effect of homogeneous strains on, the migration of uranium vacancies in UO2. Vacancy migration pathways and barriers are identified using density functional theory and the effect of uniform strain fields are accounted for using the dipole tensor approach. We report complex migration pathways and noncubic symmetry associated with the uranium vacancy in UO2 and show that these complexities need to be carefully accounted for to predict the correct diffusion behavior of uranium vacancies. We show that under homogeneous strain fields, only the dipole tensor of the saddle with respect to the minimum is required to correctly predict the change in the energy barrier between the strained and the unstrained case. Diffusivities are computed using kinetic Monte Carlo simulations for both neutral and fully charged state of uranium single and divacancies. We calculate the effect of strain on migration barriers in the temperature range 800–1800 K for both vacancy types. Homogeneous strains as small as 2% have a considerable effect on diffusivity of both single and divacancies of uranium, with the effect of strain being more pronounced for single vacancies than divacancies. In contrast, the response of a given defect to strain is less sensitive to changes in the charge state of the defect. Further, strain leads to anisotropies in the mobility of the vacancy and the degree of anisotropy is very sensitive to the nature of the applied strain field for strain of equal magnitude. Our results indicate that the influence of strain on vacancy diffusivity will be significantly greater when single vacancies dominate the defect structure, such as sintering, while the effects will be much less substantial under irradiation conditions where divacancies dominate.

  14. Impact of homogeneous strain on uranium vacancy diffusion in uranium dioxide

    DOE PAGES-Beta [OSTI]

    Goyal, Anuj; Phillpot, Simon R.; Subramanian, Gopinath; Andersson, David A.; Stanek, Chris R.; Uberuaga, Blas P.

    2015-03-03

    We present a detailed mechanism of, and the effect of homogeneous strains on, the migration of uranium vacancies in UO2. Vacancy migration pathways and barriers are identified using density functional theory and the effect of uniform strain fields are accounted for using the dipole tensor approach. We report complex migration pathways and noncubic symmetry associated with the uranium vacancy in UO2 and show that these complexities need to be carefully accounted for to predict the correct diffusion behavior of uranium vacancies. We show that under homogeneous strain fields, only the dipole tensor of the saddle with respect to the minimummore » is required to correctly predict the change in the energy barrier between the strained and the unstrained case. Diffusivities are computed using kinetic Monte Carlo simulations for both neutral and fully charged state of uranium single and divacancies. We calculate the effect of strain on migration barriers in the temperature range 800–1800 K for both vacancy types. Homogeneous strains as small as 2% have a considerable effect on diffusivity of both single and divacancies of uranium, with the effect of strain being more pronounced for single vacancies than divacancies. In contrast, the response of a given defect to strain is less sensitive to changes in the charge state of the defect. Further, strain leads to anisotropies in the mobility of the vacancy and the degree of anisotropy is very sensitive to the nature of the applied strain field for strain of equal magnitude. Our results indicate that the influence of strain on vacancy diffusivity will be significantly greater when single vacancies dominate the defect structure, such as sintering, while the effects will be much less substantial under irradiation conditions where divacancies dominate.« less

  15. Formation and Growth of Stacking Fault Tetrahedra in Ni via Vacancy Aggregation Mechanism

    DOE PAGES-Beta [OSTI]

    Aidhy, Dilpuneet S.; Lu, Chenyang; Jin, Ke; Bei, Hongbin; Zhang, Yanwen; Wang, Lumin; Weber, William J.

    2015-12-29

    Using molecular dynamics simulations, the formation and growth of stacking fault tetrahedra (SFT) are captured by vacancy cluster diffusion and aggregation mechanisms in Ni. The vacancytetrahedron acts as a nucleation point for SFT formation. Simulations show that perfect SFT can grow to the next size perfect SFT via a vacancy aggregation mechanism. The stopping and range of ions in matter (SRIM) calculations and transmission electron microscopy (TEM) observations reveal that SFT can form farther away from the initial cascade-event locations, indicating the operation of diffusion-based vacancy-aggregation mechanism.

  16. Spin and photophysics of carbon-antisite vacancy defect in

    Office of Scientific and Technical Information (OSTI)

    Spin and photophysics of carbon-antisite vacancy defect in 4 H silicon carbide: A potential quantum bit Not Available Temp HTML ...

  17. Effect of vacancies on the structure and properties of Ga[subscript...

    Office of Scientific and Technical Information (OSTI)

    2(Sesubscript 0.33Tesubscript 0.67)subscript 3 Citation Details In-Document Search Title: Effect of vacancies on the structure and properties of Gasubscript 2(Sesubsc...

  18. Effect of cation ordering on oxygen vacancy diffusion pathways in double

    Office of Scientific and Technical Information (OSTI)

    perovskites (Journal Article) | DOE PAGES Effect of cation ordering on oxygen vacancy diffusion pathways in double perovskites Title: Effect of cation ordering on oxygen vacancy diffusion pathways in double perovskites Perovskite structured oxides (ABO3) are attractive for a number of technological applications, including as superionics because of the high oxygen conductivities they exhibit. Double perovskites (AA'BB'O6) provide even more flexibility for tailoring properties. Using

  19. Vacancy-type defects induced by grinding of Si wafers studied by monoenergetic positron beams

    SciTech Connect (OSTI)

    Uedono, Akira; Yoshihara, Nakaaki; Mizushima, Yoriko; Kim, Youngsuk; Nakamura, Tomoji; Ohba, Takayuki; Oshima, Nagayasu; Suzuki, Ryoichi

    2014-10-07

    Vacancy-type defects introduced by the grinding of Czochralski-grown Si wafers were studied using monoenergetic positron beams. Measurements of Doppler broadening spectra of the annihilation radiation and the lifetime spectra of positrons showed that vacancy-type defects were introduced in the surface region (<98 nm), and the major defect species were identified as (i) relatively small vacancies incorporated in dislocations and (ii) large vacancy clusters. Annealing experiments showed that the defect concentration decreased with increasing annealing temperature in the range between 100 and 500C. After 600700C annealing, the defect-rich region expanded up to about 170 nm, which was attributed to rearrangements of dislocation networks, and a resultant emission of point defects toward the inside of the sample. Above 800C, the stability limit of those vacancies was reached and they started to disappear. After the vacancies were annealed out (900C), oxygen-related defects were the major point defects and they were located at <25 nm.

  20. Complete Safety Training

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

    Complete Safety Training Print Facility Safety Training Required for ALL Users Users must register with the ALS to obtain an LBNL ID number before they can complete safety training...

    1. Complete Safety Training

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

      Complete Safety Training Print Facility Safety Training Required for ALL Users Users must register with the ALS to obtain an LBNL ID number before they can complete safety training ...

    2. Completed Methane Hydrate Projects

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

      Completed Methane Hydrate Projects Active Projects | Completed Projects Completed Methane Hydrate Projects Project Number Project Name Primary Performer DE-FE0002911 Natural Gas Hydrates in Permafrost and Marine Settings: Resources, Properties, and Environmental Issues U.S. Geological Survey at Woods Hole DE-FE0013565 Hydrate Evolution in Response to Ongoing Environmental Shifts University of Oregon DE-FE0013889 THCM Coupled Model for Hydrate-bearing Sediments: Data Analysis and Design of New

    3. Complete Streets Resources

      Energy.gov [DOE]

      While transportation efficiency policies are often implemented under local governments, national and state programs can play supportive roles in reducing vehicle miles traveled. Find complete...

    4. Deactivation Completion and Turnover

      Energy.gov [DOE]

      Achieving consensus that deactivation is complete can involve several parties including the deactivation contractor, the Field Office, DOE Headquarters, the post-deactivation contractor, regulators...

    5. Method for large-scale fabrication of atomic-scale structures on material surfaces using surface vacancies

      DOE Patents [OSTI]

      Lim, Chong Wee; Ohmori, Kenji; Petrov, Ivan Georgiev; Greene, Joseph E.

      2004-07-13

      A method for forming atomic-scale structures on a surface of a substrate on a large-scale includes creating a predetermined amount of surface vacancies on the surface of the substrate by removing an amount of atoms on the surface of the material corresponding to the predetermined amount of the surface vacancies. Once the surface vacancies have been created, atoms of a desired structure material are deposited on the surface of the substrate to enable the surface vacancies and the atoms of the structure material to interact. The interaction causes the atoms of the structure material to form the atomic-scale structures.

    6. Status Report on Paths to Closure

      Office of Energy Efficiency and Renewable Energy (EERE)

      This status report updates EM's life cycle cost and schedule estimates for completing cleanup, which EM last provided in the 1998 Paths to Closure report.

    7. VERITAS: status c.2005

      SciTech Connect (OSTI)

      Weekes, T. C.; Atkins, R. W.; Badran, H. M.; Blaylock, G.; Bond, I. H.; Boyle, P. J.; Bradbury, S. M.; Buckley, J. H.; Bryum, K. L.; Carter-Lewis, D. A.; Celik, O.; Chow, Y. C. K.; Cogan, P.; Cui, W.; Daniel, M. K.; Calle Perez, I. de la; Dowdall, C.; Dowkontt, P.; Duke, C.; Ergin, T.

      2006-07-11

      VERITAS (Very Energetic Radiation Imaging Telescope Array System), is one of a new generation of TeV gamma-ray observatories. The current status of its construction is described here. The first two telescopes and cameras have been completed and meet the design specifications; the full array of four telescopes could be operational by the end of 2006.

    8. Effect of cation ordering on oxygen vacancy diffusion pathways in double perovskites

      DOE PAGES-Beta [OSTI]

      Uberuaga, Blas Pedro; Pilania, Ghanshyam

      2015-07-08

      Perovskite structured oxides (ABO3) are attractive for a number of technological applications, including as superionics because of the high oxygen conductivities they exhibit. Double perovskites (AA’BB’O6) provide even more flexibility for tailoring properties. Using accelerated molecular dynamics, we examine the role of cation ordering on oxygen vacancy mobility in one model double perovskite SrLaTiAlO6. We find that the mobility of the vacancy is very sensitive to the cation ordering, with a migration energy that varies from 0.6 to 2.7 eV. In the extreme cases, the mobility is both higher and lower than either of the two end member single perovskites.more » Further, the nature of oxygen vacancy diffusion, whether one-dimensional, two-dimensional, or three-dimensional, also varies with cation ordering. We correlate the dependence of oxygen mobility on cation structure to the distribution of Ti4+ cations, which provide unfavorable environments for the positively charged oxygen vacancy. The results demonstrate the potential of using tailored double perovskite structures to precisely control the behavior of oxygen vacancies in these materials.« less

    9. Pd-vacancy complex in Ge: TDPAC and ab initio study

      SciTech Connect (OSTI)

      Abiona, Adurafimihan A.; Kemp, Williams; Timmers, Heiko

      2014-02-21

      Low temperature metal-induced-crystallized germanium is a promising alternative for silicon in Complementary Metal-Oxide-Semiconductor (CMOS) technology. Palladium (Pd) is one of the metals suitable for inducing the low temperature crystallization. It is not certain, how residual Pd atoms are integrated into the Ge lattice. Therefore, time-different ?-? perturbed angular correlation (TDPAC) technique using the {sup 100}Pd(?{sup 100}Rh) nuclear probe has been applied to study the hyperfine interactions of this probe in single crystalline undoped Ge. A Pd-vacancy (Pd-V) complex with a unique interaction frequency of 8.4(2) Mrad/s has been identified. The Pd-V complex has been measured to have a maximum fraction after annealing at 350 C. Density functional theory calculations have confirmed that the Pd-V complex may have the split-vacancy configuration in Ge, in contrast to the full-vacancy configuration observed in Si.

    10. Electrical compensation by Ga vacancies in Ga{sub 2}O{sub 3} thin films

      SciTech Connect (OSTI)

      Korhonen, E.; Tuomisto, F.; Gogova, D.; Wagner, G.; Baldini, M.; Galazka, Z.; Schewski, R.; Albrecht, M.

      2015-06-15

      The authors have applied positron annihilation spectroscopy to study the vacancy defects in undoped and Si-doped Ga{sub 2}O{sub 3} thin films. The results show that Ga vacancies are formed efficiently during metal-organic vapor phase epitaxy growth of Ga{sub 2}O{sub 3} thin films. Their concentrations are high enough to fully account for the electrical compensation of Si doping. This is in clear contrast to another n-type transparent semiconducting oxide In{sub 2}O{sub 3}, where recent results show that n-type conductivity is not limited by cation vacancies but by other intrinsic defects such as O{sub i}.

    11. Fast nanoscale addressability of nitrogen-vacancy spins via coupling to a dynamic ferromagnetic vortex

      DOE PAGES-Beta [OSTI]

      Wolf, M. S.; Badea, R.; Berezovsky, J.

      2016-06-14

      The core of a ferromagnetic vortex domain creates a strong, localized magnetic field, which can be manipulated on nanosecond timescales, providing a platform for addressing and controlling individual nitrogen-vacancy centre spins in diamond at room temperature, with nanometre-scale resolution. Here, we show that the ferromagnetic vortex can be driven into proximity with a nitrogen-vacancy defect using small applied magnetic fields, inducing significant nitrogen-vacancy spin splitting. We also find that the magnetic field gradient produced by the vortex is sufficient to address spins separated by nanometre-length scales. By applying a microwave-frequency magnetic field, we drive both the vortex and the nitrogen-vacancymore » spins, resulting in enhanced coherent rotation of the spin state. Lastly, we demonstrate that by driving the vortex on fast timescales, sequential addressing and coherent manipulation of spins is possible on ~ 100 ns timescales.« less

    12. Edison's move is complete

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

      Edison's move is complete Edison's move is complete January 8, 2016 by Richard Gerber We're pleased to announce that Edison is once again available to all NERSC users. The move from the NERSC Oakland Scientific Facility to the main Berkeley Lab campus was completed one week earlier than expected! Usage will not be charged through the end of the allocation year. Edison is now using the SLURM batch scheduler and job launcher (qsub will not work!). Please see the following web page for more

    13. Completed Deepwater Technology Projects

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

      Deepwater Technology Projects Active Projects | Completed Projects Completed Offshore Deepwater Technology Projects Project Number Project Name Primary Performer 12121-6503-01 Development of Best Practices and Risk Mitigation Measures for Deepwater Cementing in SBM and OBM CSI Technologies 11121-5101-01 Trident: A Human Factors Decision Aid Integrating Deepwater Drilling Tasks, Incidents, and Literature Review Pacific Science & Engineering Group 11121-5503-01 Intelligent BOP RAM Actuation

    14. Positron annihilation spectroscopy of vacancy-type defects hierarchy in submicrocrystalline nickel during annealing

      SciTech Connect (OSTI)

      Kuznetsov, Pavel V.; Mironov, Yuri P. E-mail: tolmach@ispms.tsc.ru Tolmachev, Aleksey I. E-mail: tolmach@ispms.tsc.ru Rakhmatulina, Tanzilya V. E-mail: tolmach@ispms.tsc.ru; Bordulev, Yuri S. E-mail: laptev.roman@gmail.com Laptev, Roman S. E-mail: laptev.roman@gmail.com Lider, Andrey M. E-mail: laptev.roman@gmail.com Mikhailov, Andrey A. E-mail: laptev.roman@gmail.com; Korznikov, Alexander V.

      2014-11-14

      Positron annihilation and X-ray diffraction analysis have been used to study submicrocrystalline nickel samples prepared by equal channel angular pressing. In the as-prepared samples the positrons are trapped at dislocation-type defects and in vacancy clusters that can include up to 5 vacancies. The study has revealed that the main positron trap centers at the annealing temperature of ΔT= 20°C-180°C are low-angle boundaries enriched by impurities. At ΔT = 180°C-360°C, the trap centers are low-angle boundaries providing the grain growth due to recrystallization in-situ.

    15. NPDF status

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

      NPDF INSTRUMENT STATUS Waiting for runs .. Last update: Fri Mar 27 04:43:30 2015 NPDF RECENT DATA PLOTTING Select plot: GSAS - PDF...

    16. Franklin Completed Jobs

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

      Completed Jobs Franklin Completed Jobs Select a time period Show jobs that completed after Jan Feb Mar Apr May Jun July Aug Sep Oct Nov Dec 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 @ 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 : 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46

    17. Cation and Vacancy Disorder in U1-yNdyO2.00-X Alloys

      DOE PAGES-Beta [OSTI]

      Barabash, Rozaliya I.; Voit, Stewart L.; Aidhy, Dilpuneet S.; Lee, Seung Min; Knight, Travis W.; Sprouster, David J.; Ecker, Lynne E.

      2015-09-14

      In this study, the intermixing and clustering of U/Nd, O, and vacancies were studied by both laboratory and synchrotron-based x-ray diffraction in U1-yNdyO2-X alloys. It was found that an increased holding time at the high experimental temperature during initial alloy preparation results in a lower disorder of the Nd distribution in the alloys. Adjustment of the oxygen concentration in the U1-yNdyO2-X alloys with different Nd concentrations was accompanied by the formation of vacancies on the oxygen sublattice and a nanocrystalline component. The lattice parameters in the U1-yNdyO2-X alloys were also found to deviate significantly from Vegard's law when the Ndmore » concentration was high (53%) and decreased with increasing oxygen concentration. Such changes indicate the formation of large vacancy concentrations during oxygen adjustment at these high temperatures. Finally, the change in the vacancy concentration after the oxygen adjustment was estimated relative to Nd concentration and oxygen stoichiometry.« less

    18. Vacancy structures and melting behavior in rock-salt GeSbTe

      DOE PAGES-Beta [OSTI]

      Zhang, Bin; Wang, Xue -Peng; Shen, Zhen -Ju; Li, Xian -Bin; Wang, Chuan -Shou; Chen, Yong -Jin; Li, Ji -Xue; Zhang, Jin -Xing; Zhang, Ze; Zhang, Sheng -Bai; et al

      2016-05-03

      Ge-Sb-Te alloys have been widely used in optical/electrical memory storage. Because of the extremely fast crystalline-amorphous transition, they are also expected to play a vital role in next generation nonvolatile microelectronic memory devices. However, the distribution and structural properties of vacancies have been one of the key issues in determining the speed of melting (or amorphization), phase-stability, and heat-dissipation of rock-salt GeSbTe, which is crucial for its technological breakthrough in memory devices. Using spherical aberration-aberration corrected scanning transmission electron microscopy and atomic scale energy-dispersive X-ray mapping, we observe a new rock-salt structure with high-degree vacancy ordering (or layered-like ordering) atmore » an elevated temperature, which is a result of phase transition from the rock-salt phase with randomly distributed vacancies. First-principles calculations reveal that the phase transition is an energetically favored process. Furthermore, molecular dynamics studies suggest that the melting of the cubic rock-salt phases is initiated at the vacancies, which propagate to nearby regions. The observation of multi-rock-salt phases suggests another route for multi-level data storage using GeSbTe.« less

    19. Donor-vacancy pairs in irradiated n-Ge: A searching look at the problem

      SciTech Connect (OSTI)

      Emtsev, Vadim; Oganesyan, Gagik

      2014-02-21

      The present situation concerning the identification of vacancy-donor pairs in irradiated n-Ge is discussed. The challenging points are the energy states of these defects deduced from DLTS spectra. Hall effect data seem to be at variance with some important conclusions drawn from DLTS measurements. Critical points of the radiation-produced defect modeling in n-Ge are highlighted.

    20. Interlayer coupling enhancement in graphene/hexagonal boron nitride heterostructures by intercalated defects or vacancies

      SciTech Connect (OSTI)

      Park, Sohee [Department of Materials Science and Engineering, Seoul National University, Seoul 151-747 (Korea, Republic of)] [Department of Materials Science and Engineering, Seoul National University, Seoul 151-747 (Korea, Republic of); Park, Changwon [Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States)] [Center for Nanophase Materials Sciences, Oak Ridge National Laboratory, Oak Ridge, Tennessee 37831 (United States); Kim, Gunn, E-mail: gunnkim@sejong.ac.kr [Department of Physics and Graphene Research Institute, Sejong University, Seoul 143-747 (Korea, Republic of)] [Department of Physics and Graphene Research Institute, Sejong University, Seoul 143-747 (Korea, Republic of)

      2014-04-07

      Hexagonal boron nitride (hBN), a remarkable material with a two-dimensional atomic crystal structure, has the potential to fabricate heterostructures with unusual properties. We perform first-principles calculations to determine whether intercalated metal atoms and vacancies can mediate interfacial coupling and influence the structural and electronic properties of the graphene/hBN heterostructure. Metal impurity atoms (Li, K, Cr, Mn, Co, and Cu), acting as extrinsic defects between the graphene and hBN sheets, produce n-doped graphene. We also consider intrinsic vacancy defects and find that a boron monovacancy in hBN acts as a magnetic dopant for graphene, whereas a nitrogen monovacancy in hBN serves as a nonmagnetic dopant for graphene. In contrast, the smallest triangular vacancy defects in hBN are unlikely to result in significant changes in the electronic transport of graphene. Our findings reveal that a hBN layer with some vacancies or metal impurities enhances the interlayer coupling in the graphene/hBN heterostructure with respect to charge doping and electron scattering.

    1. Segregation and Migration of the Oxygen Vacancies in the 3 (111) Tilt Grain Boundaries of Ceria

      DOE PAGES-Beta [OSTI]

      Yuan, Fenglin; Liu, Bin; Zhang, Yanwen; Weber, William J.

      2016-03-01

      In nanocrystalline materials, defect-grain boundary (GB) interaction plays a key role in determining the structure stability, as well as size-dependent ionic, electronic, magnetic and chemical properties. In this study, we systematically investigated using density functional theory segregation and migration of oxygen vacancies at the Σ3 [110] / (111) grain boundary of ceria. Three oxygen layers near the GB are predicted to be segregation sites for oxygen vacancies. Moreover, the presence of oxygen vacancies stabilizes this tilt GB at a low Fermi level and/or oxygen poor conditions. An atomic strain model was proposed to rationalize layer dependency of the relaxation energymore » for +2 charged oxygen vacancy. The structural origin of large relaxation energies at layers 1 and 2 was determined to be free-volume space that induces ion relaxation towards the GB. Our results not only pave the way for improving the oxygen transport near GBs of ceria, but also provide important insights into engineering the GB structure for better ionic, magnetic and chemical properties of nanocrystalline ceria.« less

    2. Completed Environmental Solutions Projects

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

      Environmental Solutions Projects Produced Water | Federal Lands Access | Regulatory Streamlining | Oil Refining Completed Produced Water Management Projects Project Number Project Name Primary Performer DE-NT0005227 Membrane Technology for Produced Water at Lea County, NM Lea County Government, Lovington, NM DE-FE0000833 An Integrated Water Treatment Technology Solution for Sustainable Water Resource Management in the Marcellus Shale Altela, Inc. Argonne National Laboratory DE-FE0000784

    3. First-principles study of band gap engineering via oxygen vacancy doping in perovskite ABB'O₃ solid solutions

      SciTech Connect (OSTI)

      Qi, Tingting; Curnan, Matthew T.; Kim, Seungchul; Bennett, Joseph W.; Grinberg, Ilya; Rappe, Andrew M.

      2011-12-15

      Oxygen vacancies in perovskite oxide solid solutions are fundamentally interesting and technologically important. However, experimental characterization of the vacancy locations and their impact on electronic structure is challenging. We have carried out first-principles calculations on two Zr-modified solid solutions, Pb(Zn1/3Nb2/3)O₃ and Pb(Mg1/3Nb2/3)O₃, in which vacancies are present. We find that the vacancies are more likely to reside between low-valent cation-cation pairs than high-valent cation-cation pairs. Based on the analysis of our results, we formulate guidelines that can be used to predict the location of oxygen vacancies in perovskite solid solutions. Our results show that vacancies can have a significant impact on both the conduction and valence band energies, in some cases lowering the band gap by ≈0.5 eV. The effects of vacancies on the electronic band structure can be understood within the framework of crystal field theory.

    4. First-principles study of band gap engineering via oxygen vacancy doping in perovskite ABB'O₃ solid solutions

      DOE PAGES-Beta [OSTI]

      Qi, Tingting; Curnan, Matthew T.; Kim, Seungchul; Bennett, Joseph W.; Grinberg, Ilya; Rappe, Andrew M.

      2011-12-15

      Oxygen vacancies in perovskite oxide solid solutions are fundamentally interesting and technologically important. However, experimental characterization of the vacancy locations and their impact on electronic structure is challenging. We have carried out first-principles calculations on two Zr-modified solid solutions, Pb(Zn1/3Nb2/3)O₃ and Pb(Mg1/3Nb2/3)O₃, in which vacancies are present. We find that the vacancies are more likely to reside between low-valent cation-cation pairs than high-valent cation-cation pairs. Based on the analysis of our results, we formulate guidelines that can be used to predict the location of oxygen vacancies in perovskite solid solutions. Our results show that vacancies can have a significant impactmore » on both the conduction and valence band energies, in some cases lowering the band gap by ≈0.5 eV. The effects of vacancies on the electronic band structure can be understood within the framework of crystal field theory.« less

    5. SMARTS status

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

      ContactsPhonebookOrganizationMapsCalendarJobs NEWS LIBRARY JOBS Search Lujan Home| Proposal Process | Ancillary Equipment | Chemical & Sample Prep | Training Office | Web Contact SMARTS INSTRUMENT STATUS Instrument Status (Last updated: 2016/11/20 08:11:40) Run Number: 99532 Title: Pesach AM Ti C39E7 EB70E7 [abso pos 54.52 60] Run Status: running Last Script Activity: 2016/11/20 07:33:58: Start run 99532; mah 2400000 abso pos 54.52 60 * * * * * * View full script Next Script Command: mah

    6. Live Status

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

      Help Staff Blogs Request Repository Mailing List Need Help? Out-of-hours Status and Password help Call operations: 1-800-66-NERSC, option 1 or 510-486-6821 Account Support ...

    7. Oxygen vacancies at the surface of SrTiO{sub 3} thin films

      SciTech Connect (OSTI)

      Silva, Alexandre R.; Dalpian, Gustavo M.

      2014-01-21

      The two-dimensional electron gas (2DEG) observed at the surface of oxide thin films and at the interface between two oxides has been widely discussed, but the mechanism responsible for this behavior is still not well understood. In this work, we study the properties of the SrTiO{sub 3} (001) surface and show that defects are necessary in order to explain this 2DEG. We study the properties of oxygen vacancies at the TiO{sub 2} and SrO terminated surface, and conclude they can explain the metallic behavior experimentally observed. There is a strong tendency for these vacancies to be localized at the surface, where the formation energy is less than 2.92?eV.

    8. Lithium insertion mechanism in iron-based oxyfluorides with anionic vacancies probed by PDF analysis

      DOE PAGES-Beta [OSTI]

      Dambournet, Damien; Chapman, Karena W.; Duttine, Mathieu; Borkiewicz, Olaf; Chupas, Peter J.; Groult, Henri

      2015-06-25

      The mechanism of lithium insertion that occurs in an iron oxyfluoride sample with a hexagonal–tungsten–bronze (HTB)-type structure was investigated by the pair distribution function. This study reveals that upon lithiation, the HTB framework collapses to yield disordered rutile and rock salt phases followed by a conversion reaction of the fluoride phase toward lithium fluoride and nanometer-sized metallic iron. The occurrence of anionic vacancies in the pristine framework was shown to strongly impact the electrochemical activity, that is, the reversible capacity scales with the content of anionic vacancies. Similar to FeOF-type electrodes, upon de-lithiation, a disordered rutile phase forms, showing thatmore » the anionic chemistry dictates the atomic arrangement of the re-oxidized phase. Finally, it was shown that the nanoscaling and structural rearrangement induced by the conversion reaction allow the in situ formation of new electrode materials with enhanced electrochemical properties.« less

    9. Effects of Stone-Wales and vacancy defects in atomic-scale friction on defective graphite

      SciTech Connect (OSTI)

      Sun, Xiao-Yu; Wu, RunNi; Xia, Re; Chu, Xi-Hua; Xu, Yuan-Jie

      2014-05-05

      Graphite is an excellent solid lubricant for surface coating, but its performance is significantly weakened by the vacancy or Stone-Wales (SW) defect. This study uses molecular dynamics simulations to explore the frictional behavior of a diamond tip sliding over a graphite which contains a single defect or stacked defects. Our results suggest that the friction on defective graphite shows a strong dependence on defect location and type. The 5-7-7-5 structure of SW defect results in an effectively negative slope of friction. For defective graphite containing a defect in the surface, adding a single vacancy in the interior layer will decrease the friction coefficients, while setting a SW defect in the interior layer may increase the friction coefficients. Our obtained results may provide useful information for understanding the atomic-scale friction properties of defective graphite.

    10. Lithium insertion mechanism in iron-based oxyfluorides with anionic vacancies probed by PDF analysis

      SciTech Connect (OSTI)

      Dambournet, Damien; Chapman, Karena W.; Duttine, Mathieu; Borkiewicz, Olaf; Chupas, Peter J.; Groult, Henri

      2015-06-25

      The mechanism of lithium insertion that occurs in an iron oxyfluoride sample with a hexagonal–tungsten–bronze (HTB)-type structure was investigated by the pair distribution function. This study reveals that upon lithiation, the HTB framework collapses to yield disordered rutile and rock salt phases followed by a conversion reaction of the fluoride phase toward lithium fluoride and nanometer-sized metallic iron. The occurrence of anionic vacancies in the pristine framework was shown to strongly impact the electrochemical activity, that is, the reversible capacity scales with the content of anionic vacancies. Similar to FeOF-type electrodes, upon de-lithiation, a disordered rutile phase forms, showing that the anionic chemistry dictates the atomic arrangement of the re-oxidized phase. Finally, it was shown that the nanoscaling and structural rearrangement induced by the conversion reaction allow the in situ formation of new electrode materials with enhanced electrochemical properties.

    11. Tight-binding calculation studies of vacancy and adatom defects in graphene

      DOE PAGES-Beta [OSTI]

      Zhang, Wei; Lu, Wen-Cai; Zhang, Hong-Xing; Ho, K. M.; Wang, C. Z.

      2016-02-19

      Computational studies of complex defects in graphene usually need to deal with a larger number of atoms than the current first-principles methods can handle. We show a recently developed three-center tight-binding potential for carbon is very efficient for large scale atomistic simulations and can accurately describe the structures and energies of various defects in graphene. Using the three-center tight-binding potential, we have systematically studied the stable structures and formation energies of vacancy and embedded-atom defects of various sizes up to 4 vacancies and 4 embedded atoms in graphene. In conclusion, our calculations reveal low-energy defect structures and provide a moremore » comprehensive understanding of the structures and stability of defects in graphene.« less

    12. Method of well completion

      SciTech Connect (OSTI)

      Brieger, E. F.; Colle Jr., E. A.; George, F. R.

      1985-02-12

      A perforating gun is suspended downhole in a cased borehole, in underlying relationship relative to a packer device, and adjacent to a hydrocarbon-bearing formation to be completed. A connecting tubing interconnects the gun with the packer device, and includes a rupture barrier therebetween which prevents debris from accumulating within a gun firing head. An upper tubing string is removably connected to the packer device and forms a passageway which extends from the surface of the earth, down through the packer, and to the gun firing head. The upper tubing string includes a seal means and an extension tube which sealingly engages the packer device and penetrates the rupture barrier to provide a passageway through which the gun can be fired from the surface of the earth. This combination of elements prevents malfunction of the gun when the tool is left downhole for an appreciable length of time.

    13. Completion and workover fluid

      SciTech Connect (OSTI)

      Block, J.

      1985-09-17

      An aqueous completion or workover fluid for oil or gas wells having at least two solid components. One component is a hydroxy containing aluminum compound represented by the formula AlO(OH).xH/sub 2/O. The second component is a fluid loss control agent which can be either a cross-linked polyvinyl alcohol or a cross-linked hydroxyalkyl cellulose reaction product. An acid soluble weighting agent can be added for wells having higher down hole pressures. Examples of the weighting agents include iron carbonates, iron oxides, calcium carbonates, dolomite, sodium or calcium chloride, zinc bromide and calcium bromide. After use, the fluid can be displaced from the well with acid, e.g. 15% HCl, and the cake previously deposited on the bore-hole wall is dissolved by the acid so that no damaging residue remains.

    14. Real-time observation of dynamic process of oxygen vacancy migration in cerium oxides under electric field

      SciTech Connect (OSTI)

      Li, Xiaomin; Qi, Kuo; Sun, Muhua; Huang, Qianming; Xu, Zhi E-mail: xdbai@iphy.ac.cn; Wang, Wenlong; Bai, Xuedong E-mail: xdbai@iphy.ac.cn

      2015-11-23

      The dynamic process of oxygen vacancy migration driven by the external electric field is directly observed at atomic scale in the cerium oxides (CeO{sub 2}) thin film by in-situ transmission electron microscopy method. When a bias voltage of a proper value is applied across the CeO{sub 2} film, the oxygen vacancies are formed near the interface of CeO{sub 2}/anode, followed by their migration along the direction of the external electric field. The structural modulation occurs in the [110] zone axis due to the ordering of oxygen vacancies. The migration of oxygen vacancies results in the reversible structural transformation, i.e., releasing and storing oxygen processes in CeO{sub 2}, which is of great significance for the ionic and electronic applications of the cerium oxides materials, such as oxygen pump, gas sensor, resistive random access memory, etc.

    15. Uranium vacancy mobility at the ?5 symmetric tilt and ?5 twist grain boundaries in UO?

      SciTech Connect (OSTI)

      Uberuaga, Blas Pedro; Andersson, David A.

      2015-10-01

      Ionic transport at grain boundaries in oxides dictates a number of important phenomena, from ionic conductivity to sintering to creep. For nuclear fuels, it also influences fission gas bubble nucleation and growth. Here, using a combination of atomistic calculations and object kinetic Monte Carlo (okMC) simulations, we examine the kinetic pathways associated with uranium vacancies at two model grain boundaries in UO2. The barriers for vacancy motion were calculated using the nudged elastic band method at all uranium sites at each grain boundary and were used as the basis of the okMC simulations. For both boundaries considered a simple tilt and a simple twist boundary the mobility of uranium vacancies is significantly higher than in the bulk. For the tilt boundary, there is clearly preferred migration along the tilt axis as opposed to in the perpendicular direction while, for the twist boundary, migration is essentially isotropic within the boundary plane. These results show that cation defect mobility in fluorite-structured materials is enhanced at certain types of grain boundaries and is dependent on the boundary structure with the tilt boundary exhibiting higher rates of migration than the twist boundary.

    16. Doping SrTiO3 supported FeSe by excess atoms and oxygen vacancies

      DOE PAGES-Beta [OSTI]

      Shanavas, Kavungal Veedu; Singh, David J.

      2015-07-24

      Photoemission studies of FeSe monolayer films on SrTiO3 substrate have shown electronic structures that deviate from pristine FeSe, consistent with heavy electron doping. With the help of first-principles calculations we studied the effect of excess Fe and Se atoms on the monolayer and oxygen vacancies in the substrate in order to understand the reported Fermi surface in this system. We find that both excess Fe and Se atoms prefer the same adsorption site above the bottom Se atoms on the monolayer. The adsorbed Fe is strongly magnetic and contributes electrons to the monolayer, while excess Se hybridizes with the monolayermore » Fe-d states and partially opens a gap just above the Fermi energy. We also find that the two-dimensional electron gas generated by the oxygen vacancies is partly transferred to the monolayer and can potentially suppress the hole pockets around the Γ point. Furthermore, both O vacancies in the SrTiO3 substrate and excess Fe over the monolayer can provide high levels of electron doping.« less

    17. Tuning Interfacial Thermal Conductance of Graphene Embedded in Soft Materials by Vacancy Defects

      SciTech Connect (OSTI)

      Liu, Ying; Hu, Chongze; Huang, Jingsong; Sumpter, Bobby G; Qiao, Rui

      2015-01-01

      Nanocomposites based on graphene dispersed in matrices of soft materials are promising thermal management materials. Their effective thermal conductivity depends on both the thermal conductivity of graphene and the conductance of the thermal transport across graphene-matrix interfaces. Here we report on molecular dynamics simulations of the thermal transport across the interfaces between defected graphene and soft materials in two different modes: in the across mode, heat enters graphene from one side of its basal plane and leaves through the other side; in the non-across mode, heat enters or leaves a graphene simultaneously from both sides of its basal plane. We show that, as the density of vacancy defects in graphene increases from 0 to 8%, the conductance of the interfacial thermal transport in the across mode increases from 160.4 16 to 207.8 11 MW/m2K, while that in the non-across mode increases from 7.2 0.1 to 17.8 0.6 MW/m2K. The molecular mechanisms for these variations of thermal conductance are clarified by using the phonon density of states and structural characteristics of defected graphenes. On the basis of these results and effective medium theory, we show that it is possible to enhance the effective thermal conductivity of thermal nanocomposites by tuning the density of vacancy defects in graphene despite the fact that graphene s thermal conductivity always decreases as vacancy defects are introduced.

    18. Electron trap level of hydrogen incorporated nitrogen vacancies in silicon nitride

      SciTech Connect (OSTI)

      Sonoda, Ken'ichiro Tsukuda, Eiji; Tanizawa, Motoaki; Yamaguchi, Yasuo

      2015-03-14

      Hydrogen incorporation into nitrogen vacancies in silicon nitride and its effects on electron trap level are analyzed using simulation based on density functional theory with temperature- and pressure-dependent hydrogen chemical potential. If the silicon dangling bonds around a nitrogen vacancy are well separated each other, hydrogen incorporation is energetically stable up to 900 °C, which is in agreement with the experimentally observed desorption temperature. On the other hand, if the dangling bonds strongly interact, the incorporation is energetically unfavorable even at room temperature because of steric hindrance. An electron trap level caused by a nitrogen vacancy becomes shallow by the hydrogen incorporation. An electron is trapped in a deep level created by a silicon dangling bond before hydrogen incorporation, whereas it is trapped in a shallow level created by an anti-bonding state of a silicon-silicon bond after hydrogen incorporation. The simulation results qualitatively explain the experiment, in which reduced hydrogen content in silicon nitride shows superior charge retention characteristics.

    19. Vacancy-Induced Formation and Growth of Inversion Domains in Transition-Metal Dichalcogenide Monolayer

      DOE PAGES-Beta [OSTI]

      Lin, Junhao; Pantelides, Sokrates T.; Zhou, Wu

      2015-04-23

      Sixty degree grain boundaries in semiconducting transition-metal dichalcogenide (TMDC) monolayers have been shown to act as conductive channels that have profound influence on both the transport properties and exciton behavior of the monolayers. We show that annealing TMDC monolayers at high temperature induces the formation of large-scale inversion domains surrounded by such 60° grain boundaries. To study the formation mechanism of such inversion domains, we use the electron beam in a scanning transmission electron microscope to activate the dynamic process within pristine TMDC monolayers. Moreover, the electron beam acts to generate chalcogen vacancies in TMDC monolayers and provide energy formore » them to undergo structural evolution. We directly visualize the nucleation and growth of such inversion domains and their 60° grain boundaries atom-by-atom within a MoSe2 monolayer and explore their formation mechanism. Combined with density functional theory, we conclude that the nucleation of the inversion domains and migration of their 60° grain boundaries are driven by the collective evolution of Se vacancies and subsequent displacement of Mo atoms, where such a dynamical process reduces the vacancy-induced lattice shrinkage and stabilizes the system. Our results can help to understand the performance of such materials under severe conditions (e.g., high temperature).« less

    20. Tuning Interfacial Thermal Conductance of Graphene Embedded in Soft Materials by Vacancy Defects

      SciTech Connect (OSTI)

      Liu, Ying; Hu, Chongze; Huang, Jingsong; Sumpter, Bobby G.; Qiao, Rui

      2015-06-23

      Nanocomposites based on graphene dispersed in matrices of soft materials are promising thermal management materials. Their effective thermal conductivity depends on both the thermal conductivity of graphene and the conductance of the thermal transport across graphene-matrix interfaces. Here we report on molecular dynamics simulations of the thermal transport across the interfaces between defected graphene and soft materials in two different modes: in the across mode, heat enters graphene from one side of its basal plane and leaves through the other side; in the non-across mode, heat enters or leaves a graphene simultaneously from both sides of its basal plane. We show that, as the density of vacancy defects in graphene increases from 0 to 8%, the conductance of the interfacial thermal transport in the across mode increases from 160.4 16 to 207.8 11 MW/m2K, while that in the non-across mode increases from 7.2 0.1 to 17.8 0.6 MW/m2K. The molecular mechanisms for these variations of thermal conductance are clarified by using the phonon density of states and structural characteristics of defected graphenes. On the basis of these results and effective medium theory, we show that it is possible to enhance the effective thermal conductivity of thermal nanocomposites by tuning the density of vacancy defects in graphene despite the fact that graphene s thermal conductivity always decreases as vacancy defects are introduced.

    1. Tuning Interfacial Thermal Conductance of Graphene Embedded in Soft Materials by Vacancy Defects

      DOE PAGES-Beta [OSTI]

      Liu, Ying; Hu, Chongze; Huang, Jingsong; Sumpter, Bobby G.; Qiao, Rui

      2015-06-23

      Nanocomposites based on graphene dispersed in matrices of soft materials are promising thermal management materials. Their effective thermal conductivity depends on both the thermal conductivity of graphene and the conductance of the thermal transport across graphene-matrix interfaces. Here we report on molecular dynamics simulations of the thermal transport across the interfaces between defected graphene and soft materials in two different modes: in the across mode, heat enters graphene from one side of its basal plane and leaves through the other side; in the non-across mode, heat enters or leaves a graphene simultaneously from both sides of its basal plane. Wemore » show that, as the density of vacancy defects in graphene increases from 0 to 8%, the conductance of the interfacial thermal transport in the across mode increases from 160.4 16 to 207.8 11 MW/m2K, while that in the non-across mode increases from 7.2 0.1 to 17.8 0.6 MW/m2K. The molecular mechanisms for these variations of thermal conductance are clarified by using the phonon density of states and structural characteristics of defected graphenes. On the basis of these results and effective medium theory, we show that it is possible to enhance the effective thermal conductivity of thermal nanocomposites by tuning the density of vacancy defects in graphene despite the fact that graphene s thermal conductivity always decreases as vacancy defects are introduced.« less

    2. Localized states induced by an oxygen vacancy in rutile TiO{sub 2}

      SciTech Connect (OSTI)

      Lin, Chungwei; Shin, Donghan; Demkov, Alexander A.

      2015-06-14

      Using density functional theory and model Hamiltonian analysis, we investigate the localized states induced by an oxygen vacancy in rutile TiO{sub 2}. We identify two classes of localized states—the hybrid and the polaron. The hybrid state is caused by the orbital overlap between three Ti atoms next to a vacancy and is mainly derived from the Ti e{sub g} orbitals. The polaron state is caused by the local lattice distortion and is mainly composed of one particular t{sub 2g} orbital from a single Ti atom. The first principles calculation shows that the polaron state is energetically favored, and the tight-binding analysis reveals the underlying connection between the bulk band structure and the orbital character of the polaron. The magnetic coupling between two nearby polaron states is found to be ferromagnetic. Using this picture, we analyze the results of recent theoretical calculations and experiments and discuss the connection to vacancies in SrTiO{sub 3}.

    3. Sulfur vacancies in photorefractive Sn{sub 2}P{sub 2}S{sub 6} crystals

      SciTech Connect (OSTI)

      Golden, E. M.; Giles, N. C.; Basun, S. A.; Grabar, A. A.; Stoika, I. M.; Evans, D. R.; Halliburton, L. E.

      2014-12-28

      A photoinduced electron paramagnetic resonance (EPR) spectrum in single crystals of Sn{sub 2}P{sub 2}S{sub 6} (SPS) is assigned to an electron trapped at a sulfur vacancy. These vacancies are unintentionally present in undoped SPS crystals and are expected to play an important role in the photorefractive behavior of the material. Nonparamagnetic sulfur vacancies are formed during the initial growth of the crystal. Subsequent illumination below 100 K with 442 nm laser light easily converts these vacancies to EPR-active defects. The resulting S = 1/2 spectrum shows well-resolved and nearly isotropic hyperfine interactions with two P ions and two Sn ions. Partially resolved interactions with four additional neighboring Sn ions are also observed. Principal values of the g matrix are 1.9700, 1.8946, and 1.9006, with the corresponding principal axes along the a, b, and c directions in the crystal. The isotropic parts of the two primary {sup 31}P hyperfine interactions are 19.5 and 32.6 MHz and the isotropic parts of the two primary Sn hyperfine interactions are 860 and 1320 MHz (the latter values are each an average for {sup 117}Sn and {sup 119}Sn). These hyperfine results suggest that singly ionized sulfur vacancies have a diffuse wave function in SPS crystals, and thus are shallow donors. Before illumination, sulfur vacancies are in the doubly ionized charge state because of compensation by unidentified acceptors. They then trap an electron during illumination. The EPR spectrum from the sulfur vacancy is destroyed when a crystal is heated above 120 K in the dark and reappears when the crystal is illuminated again at low temperature.

    4. Status of Wheeler Reservoir

      SciTech Connect (OSTI)

      Not Available

      1990-09-01

      This is one in a series of status reports prepared by the Tennessee Valley Authority (TVA) for those interested in the conditions of TVA reservoirs. This overview of Wheeler Reservoir summarizes reservoir purposes and operation, reservoir and watershed characteristics, reservoir uses and use impairments, and water quality and aquatic biological conditions. The information presented here is from the most recent reports, publications, and original data available. If no recent data were available, historical data were summarized. If data were completely lacking, environmental professionals with special knowledge of the resource were interviewed. 12 refs., 2 figs.

    5. Status | Department of Energy

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

      Status Status Status (1.06 MB) More Documents & Publications DOE O 206.2 Identity, Credential, and Access Management (ICAM) ICAM Workshop Audit Report: IG-0860

    6. Method for enhancement of useful luminescence from vacancy defects in refractory oxides for tunable lasers

      DOE Patents [OSTI]

      Chen, Yok

      1990-01-01

      Refractory oxide crystals suitable for use in tunable lasers and a method for preparing the same are provided. The crystals are characterized by high quantum efficiency, high thermal stability, good crystal transparency, and a high percentage of useful luminescence. The method for preparation of the crystals involves removing substantially all the hydrogen, thermochemically reducing the crystal's oxygen content to produce oxygen (anion) vacancy defects, and subsequently irradiating the crystal with electrons to inactivate trace H.sup.- ions so that an increased amount of short lived F.sup.+ luminescence is produced when the crystal is optically excited.

    7. Completed Sites | Department of Energy

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

      Completed Sites Completed Sites Completed Sites The Office of Environmental Management (EM) has been or is currently responsible for cleaning up sites across the United States. These sites were associated with the legacy of the nation's nuclear weapons program and other DOE research and development activities. Many of these sites have been cleaned up and transferred to other entities or to DOE's Legacy Management (LM) Program. Completed Sites Listing

    8. Vacancy announcements

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

      Theroretical Design Electrical Engineer (R&D Engineer 1) ISR-4Space Electronics and Signal Processing Systems Engineer (R&D Engineer 3) ISR-5Space Instrumentation...

    9. Vacancy announcements

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

      Biology And Biophysics Computational Earth Science Postdoc Computational Earth Science Synthetic Inorganic Chemistry Postdoc Inorganic Isotope and Actinide Chemistry Computing ...

    10. Vacancy announcement

      Energy Savers

      VWA-0044 - In the Matter of Janet K. Benson VWA-0044 - In the Matter of Janet K. Benson This Initial Agency Decision concerns a whistleblower complaint filed in 1994 by Janet K. Benson (the Complainant) against Lawrence Livermore National Laboratory (LLNL) and the Regents of the University of California (UC) under the Department of Energy's (DOE) Contractor Employee Protection Program, 10 C.F.R. Part 708 (Part 708). At all times relevant to this proceeding, UC managed and operated LLNL for the

    11. Vacancy announcements

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

      The jobs below were available as of the distribution date. Job title Organization Scientist 3 WX-6Explosive Applications & Special Projects Scientist 2 WX-6Explosive Applications ...

    12. Vacancy announcement

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

      may also include a CI-scope polygraph examination. BENEFITS: We offer a broad array of benefits. You can review our benefits at: https:help.usajobs.govindex.phpPayandBenefits...

    13. Vacancy announcements

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

      Postdoc LANSCE Weapons PhysicsP-27 Work Control Planner 3 Work ControlMSS-WC Induction Heating & Foundry Engineer 3 Pit Related ProductsMET-2 Sensors Development Postdoc...

    14. Vacancy announcements

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

      and Safety Tech 1 Industrial Safety & Hygiene Occupational Physician 23 Occupational Medicine-Deployed Services DesignerDrafter 12 Engineering & Engineering Sciences ...

    15. Vacancy announcements

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

      Storage Project Clinical Psychologist (Occupational Psychologist 3) OSH-OMOccupational Medicine Team Leader (R&D Manager 2) J-1DARHT Operations Division Leader (R&D Manager 6) ...

    16. Vacancy announcements

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

      Student HR-DOHuman Resources Clinic Coordinator (Program Manager 3) OSH-OMOccupational Medicine Machinist 34 PF-LFSPF-Laboratory Fabrication Services NonDestructive Testing ...

    17. Completed Transmission and Distribution Projects

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

      Completed Transmission and Distribution Projects Inspection Technologies | Remote Sensing Technologies | Materials Development | Operational Technologies Completed Transmission & Distribution Projects Project Number Project Name Primary Performer DE-AM26-05NT42653 Conceptual Engineering/Socioeconomic Impact Study-Alaska Spur Pipeline ASRC Constructors, Inc. Completed Inspection Technologies DE-NT-0004654 The Instrumented Pipeline Initiative Concurrent Technologies Corporation

    18. Weekly Petroleum Status Report

      Gasoline and Diesel Fuel Update

      Please go to the redesigned Weekly Petroleum Status Report.

    19. Tevatron status

      SciTech Connect (OSTI)

      Dugan, G.

      1989-03-01

      The Fermilab Tevatron is both the world's highest energy accelerator system and first large-scale superconducting synchrotron. Since Tevatron commissioning in July 1983, the accelerator has operated in 1984, 1985 and 1987 with extracted beams of 800 GeV for three runs of fixed target physics, and in 1987, and 1988, with proton-antiproton colliding beams at 900 /times/ 900 GeV. This paper will focus on the collider operation of the Tevatron: its present status and the outlook for its longer-term future evolution. 18 refs., 3 figs., 2 tabs.

    20. Tuning magnetism of monolayer MoS{sub 2} by doping vacancy and applying strain

      SciTech Connect (OSTI)

      Zheng, Huiling; Yang, Baishun; Han, Ruilin; Du, Xiaobo; Yan, Yu; Wang, Dingdi

      2014-03-31

      In view of important role of inducing and manipulating the magnetism in two-dimensional materials for the development of low-dimensional spintronic devices, the influences of strain on electronic structure and magnetic properties of commonly observed vacancies doped monolayer MoS{sub 2} are investigated using first-principles calculations. It is shown that unstrained V{sub S}, V{sub S2}, and V{sub MoS3} doped monolayer MoS{sub 2} systems are nonmagnetic, while the ground state of unstrained V{sub MoS6} doped system is magnetic and the magnetic moment is contributed mainly by six Mo atoms around V{sub MoS6}. In particular, tensile strain can induce magnetic moments in V{sub S}, V{sub S2}, and V{sub MoS3} doped monolayer MoS{sub 2} due to the breaking of Mo–Mo metallic bonds around the vacancies, while the magnetization induced by V{sub MoS6} can be effectively manipulated by equibiaxial strain due to the change of Mo–Mo metallic bonds around V{sub MoS6} under strains.

    1. Silicon vacancy-related centers in non-irradiated 6H-SiC nanostructure

      SciTech Connect (OSTI)

      Bagraev, N. T. Danilovskii, E. Yu.; Gets, D. S.; Kalabukhova, E. N.; Klyachkin, L. E.; Koudryavtsev, A. A.; Malyarenko, A. M.; Mashkov, V. A.; Savchenko, D. V.; Shanina, B. D.

      2015-05-15

      We present the first findings of the silicon vacancy related centers identified in the non-irradiated 6H-SiC nanostructure using the electron spin resonance (ESR) and electrically-detected (ED) ESR technique. This planar 6H-SiC nanostructure represents the ultra-narrow p-type quantum well confined by the δ-barriers heavily doped with boron on the surface of the n-type 6H-SiC(0001) wafer. The new EDESR technique by measuring the only magnetoresistance of the 6H-SiC nanostructure under the high frequency generation from the δ-barriers appears to allow the identification of the isolated silicon vacancy centers as well as the triplet center with spin state S = 1. The same triplet center that is characterized by the large value of the zero-field splitting constant D and anisotropic g-factor is revealed by the ESR (X-band) method. The hyperfine (HF) lines in the ESR and EDESR spectra originating from the HF interaction with the {sup 14}N nucleus seem to attribute this triplet center to the N-V{sub Si} defect.

    2. High Substitution Rate in TiO2 Anatase Nanoparticles with Cationic Vacancies for Fast Lithium Storage

      SciTech Connect (OSTI)

      Li, Wei; Corradini, Dario; Body, Monique; Legein, Christophe; Salanne, Mathieu; Ma, Jiwei; Chapman, Karena W.; Chupas, Peter J.; Rollet, Anne-Laure; Julien, Christian; Zhagib, Karim; Duttine, Mathieu; Demourgues, Alain; Groult, Henri; Dambournet, Damien

      2015-07-28

      Doping is generally used to tune and enhance the properties of metal oxides. However, their chemical composition cannot be readily modified beyond low dopant amounts without disrupting the crystalline atomic structure. In the case of anatase TiO2, we introduce a new solution-based chemical route allowing the composition to be significantly modified, substituting the divalent O2- anions by monovalent F- and OH- anions resulting in the formation of cationic Ti4+ vacancies (square) whose concentration can be controlled by the reaction temperature. The resulting polyanionic anatase has the general composition Ti1-x-y square x+yO2-4(x+y)F4x(OH)(4y), reaching vacancy concentrations of up to 22%, i.e., Ti-0.78 square 0.22O1.12F0.4(OH)(0.48). Solid-state F-19 NMR spectroscopy reveals that fluoride ions can accommodate up to three different environments, depending on Ti and vacancies (i.e. Ti-3-F, Ti-2 square(1)-F, and Ti-1 square(2)-F), with a preferential location close to vacancies. DFT calculations further confirm the fluoride/vacancy ordering. When its characteristics were evaluated as an electrode for reversible Li-ion storage, the material shows a modified lithium reaction mechanism, which has been rationalized by the occurrence of cationic vacancies acting as additional lithium hosting sites within the anatase framework. Finally, the material shows a fast discharging/charging behavior, compared to TiO2, highlighting the benefits of the structural modifications and paving the way for the design of advanced electrode materials, based on a defect mediated mechanism.

    3. Remote multiple string well completion

      SciTech Connect (OSTI)

      Kirkland, K.G.

      1981-04-21

      Method and apparatus for multiple string well completions by remote operations in underwater installations, by which the tubing strings are installed independently rather than simultaneously.

    4. NERSC Move to CRT Complete

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

      Move to CRT Complete NERSC Move to CRT Complete April 6, 2016 by Rebecca Hartman-Baker NERSC has completed the move of the vast majority of its resources from the Oakland Scientific Facility (OSF) location to the Computational Research and Theory (CRT) building at the main Berkeley Lab campus. The major components of the move were completed earlier in the year. In particular, Edison was moved from OSF to CRT and returned to service on January 4, 2016, and all the NERSC filesystems were migrated

    5. Completed Projects Table.xlsx

      Office of Environmental Management (EM)

      Completed Projects 2005-Present Approved Actual Soil and Water Remediation Soil and Water Remediation ANLE-0030 a 28 30 2007 2007 Yes Yes Yes Nuclear Facility Deactivation and ...

    6. WIPP Firefighters Complete Fire Training

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

      May 24, 2016 WIPP Firefighters Complete Fire Training Members of the WIPP fire department recently participated in Live Fire Training at the Permian Basin Regional Training Center ...

    7. Pure-state informationally complete and 'really' complete measurements

      SciTech Connect (OSTI)

      Finkelstein, J.

      2004-11-01

      I construct a positive-operator-valued measure (POVM) which has 2d rank-1 elements and which is informationally complete for generic pure states in d dimensions, thus confirming a conjecture made by Flammia, Silberfarb, and Caves (e-print quant-ph/0404137). I show that if a rank-1 POVM is required to be informationally complete for all pure states in d dimensions, it must have at least 3d-2 elements. I also show that, in a POVM which is informationally complete for all pure states in d dimensions, for any vector there must be at least 2d-1 POVM elements which do not annihilate that vector.

    8. Uranium vacancy mobility at the sigma 5 symmetric tilt grain boundary in UO2

      SciTech Connect (OSTI)

      Uberuaga, Blas P.

      2012-05-02

      An important consequence of the fissioning process occurring during burnup is the formation of fission products. These fission products alter the thermo-mechanical properties of the fuel. They also lead to macroscopic changes in the fuel structure, including the formation of bubbles that are connected to swelling of the fuel. Subsequent release of fission gases increase the pressure in the plenum and can cause changes in the properties of the fuel pin itself. It is thus imperative to understand how fission products, and fission gases in particular, behave within the fuel in order to predict the performance of the fuel under operating conditions. Fission gas redistribution within the fuel is governed by mass transport and the presence of sinks such as impurities, dislocations, and grain boundaries. Thus, to understand how the distribution of fission gases evolves in the fuel, we must understand the underlying transport mechanisms, tied to the concentrations and mobilities of defects within the material, and how these gases interact with microstructural features that might act as sinks. Both of these issues have been addressed in previous work under NEAMS. However, once a fission product has reached a sink, such as a grain boundary, its mobility may be different there than in the grain interior and predicting how, for example, bubbles nucleate within grain boundaries necessitates an understanding of how fission gases diffuse within boundaries. That is the goal of the present work. In this report, we describe atomic level simulations of uranium vacancy diffusion in the pressence of a {Sigma}5 symmetric tilt boundary in urania (UO{sub 2}). This boundary was chosen as it is the simplest of the boundaries we considered in previous work on segregation and serves as a starting point for understanding defect mobility at boundaries. We use a combination of molecular statics calculations and kinetic Monte Carlo (kMC) to determine how the mobility of uranium vacancies is

    9. Oxygen-vacancy-induced room-temperature magnetization in lamellar V{sub 2}O{sub 5} thin films

      SciTech Connect (OSTI)

      Cezar, A. B.; Graff, I. L. Varalda, J.; Schreiner, W. H.; Mosca, D. H.

      2014-10-28

      In this work, we study the local atomic and electronic structures as well as oxygen-vacancy-induced magnetic properties of electrodeposited V{sub 2}O{sub 5} films. Unlike stoichiometric V{sub 2}O{sub 5}, which is a diamagnetic lamellar semiconductor, our oxygen-defective V{sub 2}O{sub 5} films are ferromagnetic at room-temperature and their saturation magnetization decreases with air exposure time. X-ray absorption spectroscopy was used to monitor the aging effect on these films, revealing that freshly-made samples exhibit only local crystalline order, whereas the aged ones undoubtedly show an enhancement of crystallinity and coordination symmetry. The mean number of oxygen atoms around V tends to increase, indicating a decrease of oxygen vacancies with time. Concurrently with the decrease of oxygen vacancies, a loss of saturation magnetization is also observed. Hence, it can be concluded that the ferromagnetism of the V{sub 2}O{sub 5} films originates from a vacancy-induced mechanism, confirming the universality of this class of ferromagnetism.

    10. Tapered fiber coupling of single photons emitted by a deterministically positioned single nitrogen vacancy center

      SciTech Connect (OSTI)

      Liebermeister, Lars Petersen, Fabian; Münchow, Asmus v.; Burchardt, Daniel; Hermelbracht, Juliane; Tashima, Toshiyuki; Schell, Andreas W.; Benson, Oliver; Meinhardt, Thomas; Krueger, Anke; Stiebeiner, Ariane; Rauschenbeutel, Arno; Weinfurter, Harald; Weber, Markus

      2014-01-20

      A diamond nano-crystal hosting a single nitrogen vacancy (NV) center is optically selected with a confocal scanning microscope and positioned deterministically onto the subwavelength-diameter waist of a tapered optical fiber (TOF) with the help of an atomic force microscope. Based on this nano-manipulation technique, we experimentally demonstrate the evanescent coupling of single fluorescence photons emitted by a single NV-center to the guided mode of the TOF. By comparing photon count rates of the fiber-guided and the free-space modes and with the help of numerical finite-difference time domain simulations, we determine a lower and upper bound for the coupling efficiency of (9.5 ± 0.6)% and (10.4 ± 0.7)%, respectively. Our results are a promising starting point for future integration of single photon sources into photonic quantum networks and applications in quantum information science.

    11. Stable highly conductive ZnO via reduction of Zn vacancies

      SciTech Connect (OSTI)

      Look, David C.; Droubay, Timothy C.; Chambers, Scott A.

      2012-09-04

      Growth of Ga-doped ZnO by pulsed laser deposition at 200 ?C in an ambient of Ar and H2 produces a resistivity ? of ~ 1.5 x 10-4 ?-cm, stable to 500 ?C. Annealing on Zn foil reduces ? to ~ 1.2 x 10-4 ?-cm, one of the lowest values ever reported. The key is reducing the Zn-vacancy acceptor concentration NA to 5 x 1019, only 3% of the Ga-donor concentration ND of 1.6 x 1021 cm-3, with ND and NA determined from a degenerate mobility theory. The plasmonic wavelength is 1060 nm, further bridging the gap between metals and semiconductors.

    12. Deterministic coupling of delta-doped nitrogen vacancy centers to a nanobeam photonic crystal cavity

      SciTech Connect (OSTI)

      Lee, Jonathan C.; Cui, Shanying; Zhang, Xingyu; Russell, Kasey J.; Magyar, Andrew P.; Hu, Evelyn L.; Bracher, David O.; Ohno, Kenichi; McLellan, Claire A.; Alemn, Benjamin; Bleszynski Jayich, Ania; Andrich, Paolo; Awschalom, David; Aharonovich, Igor

      2014-12-29

      The negatively charged nitrogen vacancy center (NV) in diamond has generated significant interest as a platform for quantum information processing and sensing in the solid state. For most applications, high quality optical cavities are required to enhance the NV zero-phonon line (ZPL) emission. An outstanding challenge in maximizing the degree of NV-cavity coupling is the deterministic placement of NVs within the cavity. Here, we report photonic crystal nanobeam cavities coupled to NVs incorporated by a delta-doping technique that allows nanometer-scale vertical positioning of the emitters. We demonstrate cavities with Q up to ?24?000 and mode volume V???0.47(?/n){sup 3} as well as resonant enhancement of the ZPL of an NV ensemble with Purcell factor of ?20. Our fabrication technique provides a first step towards deterministic NV-cavity coupling using spatial control of the emitters.

    13. LARGE BLOCK TEST STATUS REPORT

      SciTech Connect (OSTI)

      Wilder, D. G.; Blair, S. C.; Buscheck, T.; Carloson, R. C.; Lee, K.; Meike, A.; Ramirez, J. L.; Sevougian, D.

      1997-08-26

      This report is intended to serve as a status report, which essentially transmits the data that have been collected to date on the Large Block Test (LBT). The analyses of data will be performed during FY98, and then a complete report will be prepared. This status report includes introductory material that is not needed merely to transmit data but is available at this time and therefore included. As such, this status report will serve as the template for the future report, and the information is thus preserved. The United States Department of Energy (DOE) is investigatinq the suitability of Yucca Mountain (YM) as a potential site for the nation's first high-level nuclear waste repository. As shown in Fig. 1-1, the site is located about 120 km northwest of Las Vegas, Nevada, in an area of uninhabited desert.

    14. Completeness for sparse potential scattering

      SciTech Connect (OSTI)

      Shen, Zhongwei

      2014-01-15

      The present paper is devoted to the scattering theory of a class of continuum Schrdinger operators with deterministic sparse potentials. We first establish the limiting absorption principle for both modified free resolvents and modified perturbed resolvents. This actually is a weak form of the classical limiting absorption principle. We then prove the existence and completeness of local wave operators, which, in particular, imply the existence of wave operators. Under additional assumptions on the sparse potential, we prove the completeness of wave operators. In the context of continuum Schrdinger operators with sparse potentials, this paper gives the first proof of the completeness of wave operators.

    15. NIF Status Update - 2014

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

      status NIF Status Update - 2014 May - Highlights of May Experiments on NIF Gigabar Equation-of-State Experiments Production of Beryllium Capsules for NIF Begins First Weekly...

    16. 100 Area D4 Project Building Completion Report: December 2008 to December 2009

      SciTech Connect (OSTI)

      K.G. Finucane, J.P. Harrie

      2010-10-26

      This report documents the final status of buildings after the completion of D4 activities at the 100 Area of the U.S. Department of Energy Hanford Site from December 1, 2008, to December 31, 2009.

    17. Well completion and servicing fluid

      SciTech Connect (OSTI)

      Grimsley, R.L.

      1990-09-25

      This patent describes a well completion servicing fluid for controlling formation pressure during completion or servicing of a well. It comprises: an aqueous solution of calcium chloride, a solid weighing agent suspended in the solution and being selected from the group consisting of zinc, zinc oxide, and mixtures thereof; and a viscosifier dissolved in the solution in an amount effective to suspend the weighing agent. The fluid has a density of greater than 15 pounds per gallon and being substantially free of bromide ions and being substantially free of solid material which is not soluble in hydrochloric acid.

    18. Completed NSTX-U. After

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

      Cryogenic panel (15 tons) being inserted into the new neutral beam box. New neutral beam box (40 tons) being moved into the NSTX-U test cell. Center stack encased within the vacuum boundary and lowered into the NSTX-U. Completed center stack installed in the NSTX-U. Completed NSTX-U. After Original NSTX prior to the upgrade. Before Building the first quadrant of the center stack magnet. Winding the ohmic heating coil around the center stack. National Spherical Torus Experiment - Upgrade NSTX was

    19. Administration Building demolition completed under budget

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

      Administration Building demolition completed under budget Administration Building demolition completed under budget Project activities started in April 2009 and was completed five...

    20. A neutral oxygen-vacancy center in diamond: A plausible qubit candidate and its spintronic and electronic properties

      SciTech Connect (OSTI)

      Zhang, Y. G.; Tang, Z. Zhao, X. G.; Cheng, G. D.; Tu, Y.; Cong, W. T.; Zhu, Z. Q.; Chu, J. H.; Peng, W.

      2014-08-04

      Spintronic and electronic properties of a neutral oxygen-vacancy (O-V) center, an isoelectronic defect similar to the negatively charged nitrogen-vacancy center in diamond, were studied by combining first-principles calculations and a mean-field theory for spin hyperfine interaction. It is elucidated that the neutral O-V center is stable in the p-type diamond and possesses an S = 1 triplet ground state and four spin-conserved excited states with the spin coherence times in an order of second at T = 0 K. The results indicate that the neutral O-V center is another promising candidate for spin coherent manipulation and qubit operation.

    1. Strain-induced phase and oxygen-vacancy stability in ionic interfaces from first-principles calculations

      DOE PAGES-Beta [OSTI]

      Aidhy, Dilpuneet S.; Liu, Bin; Zhang, Yanwen; Weber, William J.

      2014-12-03

      Understanding interfacial chemistry is becoming crucial in materials design for heterointerfaces. Using density functional theory, we elucidate the effect of strained interfaces on phase and oxygen-vacancy stability for CeO2 | ZrO2, ThO2 | ZrO2 and CeO2 | ThO2 interfaces. The calculations show that ZrO2 transforms from cubic fluorite to the orthorhombic columbite under tensile strain providing evidence of a previous experimental speculation of an unrecognized ZrO2 phase. We also show that oxygen vacancies could be preferably stabilized on either side of the interface by manipulating strain. We predict that they are stable in tensile-strain, and unstable in compressivestrained materials.

    2. Strain-induced phase and oxygen-vacancy stability in ionic interfaces from first-principles calculations

      SciTech Connect (OSTI)

      Aidhy, Dilpuneet S; Liu, Bin; Zhang, Yanwen; Weber, William J

      2014-01-01

      Understanding interfacial chemistry is becoming crucial in materials design for heterointerfaces. Using density functional theory, we elucidate the effect of strained interfaces on phase and oxygen-vacancy stability for CeO2 | ZrO2, ThO2 | ZrO2 and CeO2 | ThO2 interfaces. The calculations show that ZrO2 transforms from cubic fluorite to the orthorhombic columbite under tensile strain providing evidence of a previous experimental speculation of an unrecognized ZrO2 phase. We also show that oxygen vacancies could be preferably stabilized on either side of the interface by manipulating strain. We predict that they are stable in tensile-strain, and unstable in compressivestrained materials.

    3. Room-temperature ferromagnetism of Fe-doped TiO{sub 2} nanoparticles driven by oxygen vacancy

      SciTech Connect (OSTI)

      Patel, Sandeep K.S.; Kurian, Sajith; Gajbhiye, Namdeo S.

      2013-02-15

      Graphical abstract: A series of Ti{sub 1−x}Fe{sub x}O{sub 2−δ} (x ≤ 0.03) nanoparticles (NPs) were synthesized by sol–gel route. The room temperature ferromagnetism (RTFM) has been explained in terms of vacancy induced bound magnetic polaron (BMP) model, where the Fe{sup 3+} ions ferromagnetically coupled mediated by oxygen vacancies. Display Omitted Highlights: ► The Fe-doped NPs have been synthesized by sol–gel method. ► Ferromagnetism of Fe-doped TiO{sub 2} NPs are intrinsic property. ► Room temperature ferromagnetism observed in all the Fe-doped samples. ► Variation in M{sub s} is attributed due to oxygen vacancies and defect formation. -- Abstract: A series of Ti{sub 1−x}Fe{sub x}O{sub 2−δ} (0 ≤ x ≤ 0.03) nanoparticles (NPs) were synthesized by sol–gel route. The NPs had a size distribution in the range of 15–40 nm and were identified as the anatase TiO{sub 2} by X-ray diffraction (XRD) and Raman analysis. XRD, selected area electron diffraction, Raman and Mössbauer analysis ruled out the signature of Fe-cluster or any other oxides of Fe. The redshifting of the band edge emission peak observed in UV–vis absorption studies further confirmed the doping of Fe ions in the TiO{sub 2} lattice. Raman studies show the shifting and broadening in E{sub g}(1) and E{sub g}(3) modes with Fe doping. It suggested that the activation of ferromagnetism with increasing Fe doping concentration was related to the oxygen vacancy defects. The presence of such defects was further confirmed from electron paramagnetic resonance (EPR) measurements. The observed ferromagnetism is interpreted in terms of bound magnetic polaron (BMP) model.

    4. Oxidation state and interfacial effects on oxygen vacancies in tantalum pentoxide

      SciTech Connect (OSTI)

      Bondi, Robert J. Marinella, Matthew J.

      2015-02-28

      First-principles density-functional theory calculations are used to study the atomistic structure, structural energetics, and electron density near the O monovacancy (V{sub O}{sup n}; n?=?0,1+,2+) in both bulk, amorphous tantalum pentoxide (a-Ta{sub 2}O{sub 5}), and also at vacuum and metallic Ta interfaces. We calculate multivariate vacancy formation energies to evaluate stability as a function of oxidation state, distance from interface plane, and Fermi energy. V{sub O}{sup n} of all oxidation states preferentially segregates at both Ta and vacuum interfaces, where the metallic interface exhibits global formation energy minima. In a-Ta{sub 2}O{sub 5}, V{sub O}{sup 0} is characterized by structural contraction and electron density localization, while V{sub O}{sup 2+} promotes structural expansion and is depleted of electron density. In contrast, interfacial V{sub O}{sup 0} and V{sub O}{sup 2+} show nearly indistinguishable ionic and electronic signatures indicative of a reduced V{sub O} center. Interfacial V{sub O}{sup 2+} extracts electron density from metallic Ta, indicating that V{sub O}{sup 2+} is spontaneously reduced at the expense of the metal. This oxidation/reduction behavior suggests careful selection and processing of both oxide layer and metal electrodes for engineering memristor device operation.

    5. Effect of low-damage inductively coupled plasma on shallow nitrogen-vacancy centers in diamond

      SciTech Connect (OSTI)

      Fávaro de Oliveira, Felipe; Momenzadeh, S. Ali; Wang, Ya; Denisenko, Andrej; Konuma, Mitsuharu; Markham, Matthew; Edmonds, Andrew M.; Wrachtrup, Jörg

      2015-08-17

      Near-surface nitrogen-vacancy (NV) centers in diamond have been successfully employed as atomic-sized magnetic field sensors for external spins over the last years. A key challenge is still to develop a method to bring NV centers at nanometer proximity to the diamond surface while preserving their optical and spin properties. To that aim we present a method of controlled diamond etching with nanometric precision using an oxygen inductively coupled plasma process. Importantly, no traces of plasma-induced damages to the etched surface could be detected by X-ray photoelectron spectroscopy and confocal photoluminescence microscopy techniques. In addition, by profiling the depth of NV centers created by 5.0 keV of nitrogen implantation energy, no plasma-induced quenching in their fluorescence could be observed. Moreover, the developed etching process allowed even the channeling tail in their depth distribution to be resolved. Furthermore, treating a {sup 12}C isotopically purified diamond revealed a threefold increase in T{sub 2} times for NV centers with <4 nm of depth (measured by nuclear magnetic resonance signal from protons at the diamond surface) in comparison to the initial oxygen-terminated surface.

    6. Room-temperature in situ nuclear spin hyperpolarization from optically pumped nitrogen vacancy centres in diamond

      SciTech Connect (OSTI)

      King, Jonathan P.; Jeong, Keunhong; Vassiliou, Christophoros C.; Shin, Chang S.; Page, Ralph H.; Avalos, Claudia E.; Wang, Hai-Jing; Pines, Alexander

      2015-12-07

      Low detection sensitivity stemming from the weak polarization of nuclear spins is a primary limitation of magnetic resonance spectroscopy and imaging. Methods have been developed to enhance nuclear spin polarization but they typically require high magnetic fields, cryogenic temperatures or sample transfer between magnets. Here we report bulk, room-temperature hyperpolarization of 13C nuclear spins observed via high-field magnetic resonance. The technique harnesses the high optically induced spin polarization of diamond nitrogen vacancy centres at room temperature in combination with dynamic nuclear polarization. We observe bulk nuclear spin polarization of 6%, an enhancement of ~170,000 over thermal equilibrium. The signal of the hyperpolarized spins was detected in situ with a standard nuclear magnetic resonance probe without the need for sample shuttling or precise crystal orientation. In conclusion, hyperpolarization via optical pumping/dynamic nuclear polarization should function at arbitrary magnetic fields enabling orders of magnitude sensitivity enhancement for nuclear magnetic resonance of solids and liquids under ambient conditions.

    7. Room-temperature in situ nuclear spin hyperpolarization from optically pumped nitrogen vacancy centres in diamond

      DOE PAGES-Beta [OSTI]

      King, Jonathan P.; Jeong, Keunhong; Vassiliou, Christophoros C.; Shin, Chang S.; Page, Ralph H.; Avalos, Claudia E.; Wang, Hai-Jing; Pines, Alexander

      2015-12-07

      Low detection sensitivity stemming from the weak polarization of nuclear spins is a primary limitation of magnetic resonance spectroscopy and imaging. Methods have been developed to enhance nuclear spin polarization but they typically require high magnetic fields, cryogenic temperatures or sample transfer between magnets. Here we report bulk, room-temperature hyperpolarization of 13C nuclear spins observed via high-field magnetic resonance. The technique harnesses the high optically induced spin polarization of diamond nitrogen vacancy centres at room temperature in combination with dynamic nuclear polarization. We observe bulk nuclear spin polarization of 6%, an enhancement of ~170,000 over thermal equilibrium. The signal ofmore » the hyperpolarized spins was detected in situ with a standard nuclear magnetic resonance probe without the need for sample shuttling or precise crystal orientation. In conclusion, hyperpolarization via optical pumping/dynamic nuclear polarization should function at arbitrary magnetic fields enabling orders of magnitude sensitivity enhancement for nuclear magnetic resonance of solids and liquids under ambient conditions.« less

    8. Oxidation state and interfacial effects on oxygen vacancies in tantalum pentoxide

      DOE PAGES-Beta [OSTI]

      Bondi, Robert J.; Marinella, Matthew J.

      2015-02-28

      First-principles density-functional theory (DFT) calculations are used to study the atomistic structure, structural energetics, and electron density near the O monovacancy (VOn; n=0,1+,2+) in both bulk, amorphous tantalum pentoxide (a-Ta2O5) and also at vacuum and metallic Ta interfaces. We calculate multivariate vacancy formation energies to evaluate stability as a function of oxidation state, distance from interface plane, and Fermi energy. VOn of all oxidation states preferentially segregate at both Ta and vacuum interfaces, where the metallic interface exhibits global formation energy minima. In a-Ta2O5, VO0 are characterized by structural contraction and electron density localization, while VO2+ promote structural expansion andmore » are depleted of electron density. In contrast, interfacial VO0 and VO2+ show nearly indistinguishable ionic and electronic signatures indicative of a reduced VO center. Interfacial VO2+ extract electron density from metallic Ta indicating VO2+ is spontaneously reduced at the expense of the metal. This oxidation/reduction behavior suggests careful selection and processing of both oxide layer and metal electrodes for engineering memristor device operation.« less

    9. Room temperature alcohol sensing by oxygen vacancy controlled TiO{sub 2} nanotube array

      SciTech Connect (OSTI)

      Hazra, A.; Dutta, K.; Bhowmik, B.; Bhattacharyya, P.; Chattopadhyay, P. P.

      2014-08-25

      Oxygen vacancy (OV) controlled TiO{sub 2} nanotubes, having diameters of 5070?nm and lengths of 200250?nm, were synthesized by electrochemical anodization in the mixed electrolyte comprising NH{sub 4}F and ethylene glycol with selective H{sub 2}O content. The structural evolution of TiO{sub 2} nanoforms has been studied by field emission scanning electron microscopy. Variation in the formation of OVs with the variation of the structure of TiO{sub 2} nanoforms has been evaluated by photoluminescence and X-ray photoelectron spectroscopy. The sensor characteristics were correlated to the variation of the amount of induced OVs in the nanotubes. The efficient room temperature sensing achieved by the control of OVs of TiO{sub 2} nanotube array has paved the way for developing fast responding alcohol sensor with corresponding response magnitude of 60.2%, 45.3%, and 36.5% towards methanol, ethanol, and 2-propanol, respectively.

    10. China National Machinery Industry Complete Engineering Corporation...

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

      Industry Complete Engineering Corporation CMCEC Jump to: navigation, search Name: China National Machinery Industry Complete Engineering Corporation (CMCEC) Place: Beijing,...

    11. Subsea completion technology needs advances

      SciTech Connect (OSTI)

      Ledbetter, R.

      1995-09-18

      Subsea technology needs further advances to reduce operational costs before operators will expand the use of subsea well completions in the Gulf of Mexico. They will continue to choose surface completion-oriented systems as long as these are more economical operationally than subsea system. Designs of subsea equipment such as trees, connectors, control pods, umbilicals, and flow lines, must bring about reductions in the cost of both installation and workover compatibility. Remote operated vehicle (ROV) manipulation is one avenue that should be exploited. The bottom line is that significant cooperation between equipment manufacturers and ROV companies is needed to develop advanced ROV technology, and operators should be involved to help guide operational strategies.

    12. Complete EOS for PBX 9502

      SciTech Connect (OSTI)

      Menikoff, Ralph S

      2009-10-08

      PBX 9502 is an insensitive plastic-bonded explosive based on triamino-trinitrobenzene (TATB). A complete equation of state (EOS) is constructed for unreacted PBX 9502 suitable for reactive burn models, i.e., high pressure regime in which material strength is unimportant. The PBX EOS is composed of two parts: a complete EOS for TATB and a porosity model which allows for variations in the initial PBX density. The TATB EOS is based on a cold curve and a thermal model for lattice vibrations. The heat capacity, and hence thermal model, is determined by the vibrational spectrum from Raman scattering. The cold curve is calibrated to diamond anvil cell data for isothermal compression using a two-piece Keane fitting form. Hugoniot data for PBX 9502 is used as a consistency check.

    13. Complete liquefaction methods and apparatus

      SciTech Connect (OSTI)

      Turner, Terry D.; Wilding, Bruce M.

      2013-10-15

      A method and apparatus are described to provide complete gas utilization in the liquefaction operation from a source of gas without return of natural gas to the source thereof from the process and apparatus. The mass flow rate of gas input into the system and apparatus may be substantially equal to the mass flow rate of liquefied product output from the system, such as for storage or use.

    14. Uranium vacancy mobility at the Σ5 symmetric tilt and Σ5 twist grain boundaries in UO₂

      DOE PAGES-Beta [OSTI]

      Uberuaga, Blas Pedro; Andersson, David A.

      2015-10-01

      Ionic transport at grain boundaries in oxides dictates a number of important phenomena, from ionic conductivity to sintering to creep. For nuclear fuels, it also influences fission gas bubble nucleation and growth. Here, using a combination of atomistic calculations and object kinetic Monte Carlo (okMC) simulations, we examine the kinetic pathways associated with uranium vacancies at two model grain boundaries in UO2. The barriers for vacancy motion were calculated using the nudged elastic band method at all uranium sites at each grain boundary and were used as the basis of the okMC simulations. For both boundaries considered – a simplemore » tilt and a simple twist boundary – the mobility of uranium vacancies is significantly higher than in the bulk. For the tilt boundary, there is clearly preferred migration along the tilt axis as opposed to in the perpendicular direction while, for the twist boundary, migration is essentially isotropic within the boundary plane. These results show that cation defect mobility in fluorite-structured materials is enhanced at certain types of grain boundaries and is dependent on the boundary structure with the tilt boundary exhibiting higher rates of migration than the twist boundary.« less

    15. Uranium vacancy mobility at the Σ5 symmetric tilt and Σ5 twist grain boundaries in UO₂

      SciTech Connect (OSTI)

      Uberuaga, Blas Pedro; Andersson, David A.

      2015-10-01

      Ionic transport at grain boundaries in oxides dictates a number of important phenomena, from ionic conductivity to sintering to creep. For nuclear fuels, it also influences fission gas bubble nucleation and growth. Here, using a combination of atomistic calculations and object kinetic Monte Carlo (okMC) simulations, we examine the kinetic pathways associated with uranium vacancies at two model grain boundaries in UO2. The barriers for vacancy motion were calculated using the nudged elastic band method at all uranium sites at each grain boundary and were used as the basis of the okMC simulations. For both boundaries considered – a simple tilt and a simple twist boundary – the mobility of uranium vacancies is significantly higher than in the bulk. For the tilt boundary, there is clearly preferred migration along the tilt axis as opposed to in the perpendicular direction while, for the twist boundary, migration is essentially isotropic within the boundary plane. These results show that cation defect mobility in fluorite-structured materials is enhanced at certain types of grain boundaries and is dependent on the boundary structure with the tilt boundary exhibiting higher rates of migration than the twist boundary.

    16. On the Potential for Vacancy Annihilation as a Mechanism for Conditioning in Pu-1.9 at.% Ga

      SciTech Connect (OSTI)

      Jeffries, J R; Blobaum, K M; Schwartz, A J

      2009-03-09

      The {delta} {yields} {alpha}{prime} martensitic transformation in Pu-1.9 at.% Ga occurs when the alloy is cooled below about -100 C. This transformation exhibits anomalous behavior, where the isothermal transformation proceeds atypically with double-C kinetics. Recent work has revealed that an ambient temperature isothermal hold (referred to as conditioning) prior to the transformation has different effects depending on whether transformation proceeds in the upper- or lower-C of the double-C: the amount of transformation is increased with conditioning in the upper-C, while the transformation in the lower-C seems to be engendered by conditioning. The mechanism by which conditioning affects the low-temperature {delta} {yields} {alpha}{prime} transformation is thus of great importance to understanding the transformation itself as well as the general circumstances that can affect a martensitic phase transformation. Using differential scanning calorimetry measurements, vacancy annihilation as a mechanism for the conditioning effect has been examined. While there are some characteristics of the conditioning effect that are reminiscent of vacancy annihilation, the results of these experiments suggest that vacancy annihilation is not a likely candidate description for the conditioning effect.

    17. Subsea completions: Subsea continues strong

      SciTech Connect (OSTI)

      Mohr, H.O.

      1996-02-01

      Comparison of 1995 statistics to the previous three years indicates that the trend for applying subsea completions remains steady at about 80 installations per year. Consistent performance at this high level means industry maintains confidence in the technology. As recently as 1990, there was a low of 36 installations--the all-time high, prior to 1993, had been 66 during 1985. Another positive indicator is the number of identified future subsea completions, i.e., those in progress, or site-specific applications under consideration. This statistic also remains steady, with 1,340 at the end of 1995, and 1,341 and 1,315 at year-end 1994 and 1993. As a comparison, in 1989 and 1990, there were 1,083 and 976 identified. Petrobras is the leading user of subsea completions with 248, three times as many as Shell, the second most active operator. The ten tables of data shown list operating companies making the installations, where they are, what type, water depth, manufacturer and other descriptive features. Preceding discussions cover industry trends and development activity influencing the installations.

    18. Distribution change of oxygen vacancies in layered perovskite type(Sr, La){sub n+1}Fe{sub n}O{sub 3n+1} (n=3)

      SciTech Connect (OSTI)

      Kagomiya, Isao Jimbo, Keigo; Kakimoto, Ken-ichi

      2013-11-15

      To elucidate characteristic oxygen vacancy formation in layered perovskite (Sr, La){sub n+1}Fe{sub n}O{sub 3n+1} with the perovskite layer number: n=3, oxygen vacancy content ? of the (Sr{sub 0.775}La{sub 0.225}){sub 4}Fe{sub 3}O{sub 10??} (SLF4310) was investigated using a titration technique and a thermogravimetric analysis. The equilibrium constant K for the reduction reaction: Oo{sup }+2Fe{sub Fe}{sup ?} (Fe{sup 4+})=1/2O{sub 2}+Vo{sup ??}+2Fe{sub Fe}{sup }(Fe{sup 3+}) was estimated using the vacancy content ?. The Arrhenius plot of the K reveals slope change at approximately 775 C. From the Rietveld analysis, the oxygen vacancies are the most remarkable at the O2 (O4) sites at lower (higher) temperatures than about 800 C, which temperature is approximately comparable with that of slope change in the K. These facts mean that distribution of vacancy sites in the SLF4310 changes at approximately 775 C, accompanying no structural phase transition. The vacancy distribution change affects to the ion conductivity of the SLF4310. - Graphical abstract: Crystal structure of (Sr{sub 0.775}La{sub 0.225}){sub 4}Fe{sub 3}O{sub 10??} (SLF4310) at 1000 C. Display Omitted - Highlights: Distribution change of oxygen vacancies is appeared at approximately 775 C. The distribution change with no structure phase transition is the first observation. The vacancy distribution change affects the ion conductivity of the SLF4310.

    19. Oxygen vacancy migration in disordered Gd{sub 2}(Zr{sub x}Ti{sub 1{minus}x}){sub 2}O{sub 7}

      SciTech Connect (OSTI)

      Williford, R.E.; Weber, W.J.; Devanathan, R.; Gale, J.D.

      1999-07-01

      Oxygen vacancy formation and migration energies in the pyrochlores Gd{sub 2}(Zr{sub x}Ti{sub 1{minus}x}){sub 2}O{sub 7} were computed using atomistic energy minimization methods, with particular attention to the role of cation antisite disorder. The interatomic potentials recognize oxygens in distinct crystallographic sites (polarizations) as distinct species, and permit assessment of the directional anisotropy in vacancy migration energies. Oxygen vacancy migration is determined by O{sub 48f} {minus} O{sub 48f} transitions along the shortest edges of the TiO{sub 6} octahedra, in agreement with previous results. Oxygen vacancies migrate towards disorder to reduce local stresses. In contrast to previous work, the V{sub 08a} and V{sub O8a} + I{sub O8b} Frenkel defects are favored over the V{sub O48f} and V{sub O48f} + I{sub O8b} Frenkel. The transition V{sub O8a}{minus}> V{sub O48f} is energetically favored for the ordered structure, and activates the three dimensional O{sub 48f} {minus} O{sub 48f} vacancy migration network by filling empty 9a sites with 48f oxygens. Local regions of order and moderate disorder must both be present for optimum oxygen conductivity. High disorder retards vacancy migration.

    20. First-principles investigation of the vacancy effect on the electronic properties in M{sub 2}AlC(M = V and Nb)

      SciTech Connect (OSTI)

      Kun, Liu Yuan, Qi; Ji-Zheng, Duan

      2014-10-15

      First principles calculations have been performed to study the mono-vacancy formation energies and electronic properties of M{sub 2}AlC (M = V and Nb) compound. The results show that the M mono-vacancy has a maximum formation energy. While the C mono-vacancy has a minimum formation energy, which means that the C mono-vacancy is the energetically most favorable in M{sub 2}AlC. The d-electrons of M element contribute most to the DOS of M{sub 2}AlC around the Fermi level, it implies that the conductivity of M{sub 2}AlC comes from the transition metal M. The M-C bond is stronger than the M-Al bond, which is caused by the strong hybridization energy peak between M and C atom. In addition, the M-C bond is weaken in the presence of the M or C mono-vacancy. The cell volumes are reduced when the mono-vacancy is formed. These results help us to understand the origin of the defect-related properties and phase stability of V{sub 2}AlC and Nb{sub 2}AlC under extreme environment.

    1. Geothermal Drilling and Completion Technology Development Program. Quarterly progress report, October 1980-December 1980

      SciTech Connect (OSTI)

      Kelsey, J.R.

      1981-03-01

      The progress, status, and results of ongoing Research and Development (R and D) within the Geothermal Drilling and Completion Technology Development Program are described. The program emphasizes the development of geothermal drilling hardware, drilling fluids, completion technology, and lost circulation control methods. Advanced drilling systems are also under development.

    2. Well cleanup and completion apparatus

      SciTech Connect (OSTI)

      Brieger, E.F.

      1984-03-13

      A well cleanup and completion apparatus and technique. A packer is located downhole in a borehole, and a tool string comprising a one-way vent assembly and a one-way circulating valve assembly is connected above a perforating gun. The tool string is used to run the gun downhole through the packer until the gun arrives at a location adjacent to the formation to be perforated. During this time, the packer assembly must be in a configuration which admits flow from the lower to the upper annulus. Cleaning fluid is circulated down the entire tool string to the one-way circulating valve assembly located immediately above the firing head of the gun, thereby displacing fluid from the lower annulus, and cleaning any debris from the gun firing head. The packer is next closed, the gun detonated, whereupon the formation is perforated and production fluid flows through the perforations, up the lower annulus, into the one-way vent assembly located below the packer, into the tubing, and to the surface of the ground. Accordingly, the apparatus enables the gun and the borehole annulus adjacent the gun to be cleaned, thereby assuring that the well is properly completed in a single trip into the wellbore.

    3. Origin of the Diverse Behavior of Oxygen Vacancies in ABO3 Perovskites: A Symmetry Based Analysis

      SciTech Connect (OSTI)

      Yin, W. J.; Wei, S. H.; Al-Jassim, M. M.; Yan, Y. F.

      2012-05-15

      Using band symmetry analysis and density functional theory calculations, we reveal the origin of why oxygen vacancy (V{sub O}) energy levels are shallow in some ABO{sub 3} perovskites, such as SrTiO{sub 3}, but are deep in some others, such as LaAlO{sub 3}. We show that this diverse behavior can be explained by the symmetry of the perovskite structure and the location (A or B site) of the metal atoms with low d orbital energies, such as Ti and La atoms. When the conduction band minimum (CBM) is an antibonding {Gamma}12 state, which is usually associated with the metal atom with low d orbital energies at the A site (e.g., LaAlO{sub 3}), then the V{sub O} energy levels are deep inside the gap. Otherwise, if the CBM is the nonbonding {Gamma}25{prime} state, which is usually associated with metal atoms with low d orbital energies at the B site (e.g., SrTiO{sub 3}), then the V{sub O} energy levels are shallow and often above the CBM. The V{sub O} energy level is also deep for some uncommon ABO{sub 3} perovskite materials that possess a low s orbital, or large-size cations, and an antibonding {Gamma}{sub 1} state CBM, such as ZnTiO{sub 3}. Our results, therefore, provide guidelines for designing ABO{sub 3} perovskite materials with desired functional behaviors.

    4. The Status of Glueballs

      SciTech Connect (OSTI)

      Lindenbaum, S.J. |

      1993-04-14

      The Status of Glueballs is presented considering that most popular candidates from among the isoscalars in the J{sup PC} = 0{sup ++}, 0{sup {minus}+} and 2{sup ++} channels. It is shown that in the 0{sup ++} channel the f{sub 0}(1720) which was discovered earlier (the S*{prime}(1720)) at BNL is highly likely the same state as the SLAC {theta}(1720) now that its spin has been found to be 0 instead of the 2 claimed for a long period. In the {sup ++} channel there is likely a complex of 2-3 states {zeta}/{eta}(1280), {lambda}/{eta}(1420) and {iota}/{eta}(1520) involving at least one extra isosclar. In the 2{sup ++}, the g{sub T}(2010), g{sub T}{prime}(2300) and g{sub T}{double_prime}(2340) {phi}{phi} states found in {pi}{sup {minus}} p {yields} {phi}{phi}n (OZI forbidden glueball filter channel) strikingly, approximately, completely break the OZI suppression and comprise within the errors all the {phi}{phi} cross-section. The only viable explanation of these states in the context of QCD is that they are produced by 1-3 primary 2{sup ++} glueballs. All alternate explanations in the past 15 years have failed.

    5. Updates and Status

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

      Status Updates and Status Current Status: Up Carver Email Announcements Archive An archive of email announcements sent to NERSC users regarding Carver. Read More » Timeline Timeline of significant Carver events. Read More » Last edited: 2016-04-29 11:34:35

    6. Updates and Status

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

      Status Updates and Status Current Status: Up Announcements All recent NERSC announcements affecting Euclid. Read More » Email Announcements Archive An archive of email announcements sent to NERSC users regarding Euclid. Read More » Known Problems All known current problems with Euclid. Read More » Timeline Timeline of significant Euclid events. Read More » Last edited: 2016-04-29 11:34:40

    7. Effect of the introduction of oxide ion vacancies into cubic fluorite-type rare earth oxides on the NO decomposition catalysis

      SciTech Connect (OSTI)

      Masui, Toshiyuki; Nagai, Ryosuke; Imanaka, Nobuhito

      2014-12-15

      Cubic fluorite-type solid solutions based on Pr{sub 6}O{sub 11} and CeO{sub 2} were synthesized and oxide anion vacancies were intentionally introduced into the cubic fluorite-type lattice through the charge compensating mechanism by Mg{sup 2+} and/or Ca{sup 2+} doping into their lattices. The oxide anion vacancies bring about positive effect on NO decomposition catalysis. The reason for the increase in the catalytic activity was attributed to defect fluorite-type structures close to the C-type cubic one, because C-type cubic rare earth oxides, in which one-quarter of the oxygen atoms in the fluorite-type structure are removed, show high NO decomposition activity. In particular, the positive effect of the formation of oxide anion vacancies was significant for Pr{sub 6}O{sub 11} and its solid solutions, because the molar volume of Pr{sub 6}O{sub 11} is larger than that of CeO{sub 2}, and Pr{sub 6}O{sub 11} contains Pr{sup 3+} as well as Pr{sup 4+} and thereby a small amount of oxide anion vacancies exist inherently in the lattice. - Graphical abstract: Oxide anion vacancies intentionally introduced into the cubic fluorite-type lattice bring about positive effect on NO decomposition catalysis. - Highlights: • Cubic fluorite-type solid solutions were synthesized. • Oxide anion vacancies were intentionally introduced into the cubic fluorite-type lattice. • The oxide anion vacancies bring about positive effect on NO decomposition catalysis. • The activity was enhanced by making the structure close to the C-type cubic one.

    8. Heuristic status polling

      DOE Patents [OSTI]

      Archer, Charles J.; Blocksome, Michael A.; Heidelberger, Philip; Kumar, Sameer; Parker, Jeffrey J.; Ratterman, Joseph D.

      2011-06-07

      Methods, compute nodes, and computer program products are provided for heuristic status polling of a component in a computing system. Embodiments include receiving, by a polling module from a requesting application, a status request requesting status of a component; determining, by the polling module, whether an activity history for the component satisfies heuristic polling criteria; polling, by the polling module, the component for status if the activity history for the component satisfies the heuristic polling criteria; and not polling, by the polling module, the component for status if the activity history for the component does not satisfy the heuristic criteria.

    9. Completed Sites Listing | Department of Energy

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

      Cleanup Sites » Completed Sites » Completed Sites Listing Completed Sites Listing As of fiscal year 2012, EM (and its predecessor organization UMTRA) completed cleanup and closed 91 sites in 24 states. Completed Sites Listing (37.4 KB) More Documents & Publications EM's Cleanup Mission: 16 Sites in 11 States Remaining EA-1406: Final Environmental Assessment Electronic Docket Room (e-Docket Room) Active Sites Active Sites Additional Information Completed Sites

    10. Upgrade of CEBAF from 6 Gev To 12 Gev: Status (Journal Article...

      Office of Scientific and Technical Information (OSTI)

      Construction is over 75% complete with final completion projected for late FY13. Details of the upgrade and status of the work will be presented. Authors: Harwood, Leigh 1 + Show ...

    11. Upgrade of CEBAF from 6-GeV To 12-GeV: Status (Conference) |...

      Office of Scientific and Technical Information (OSTI)

      Construction is over 75% complete with final completion projected for late FY13. Details of the upgrade and status of the work will be presented. Authors: Harwood, Leigh H. ...

    12. Florida Department of Environmental Protection Issues Completion...

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

      Florida Department of Environmental Protection Issues Completion Orders for Two Pinellas Sites Florida Department of Environmental Protection Issues Completion Orders for Two ...

    13. RECRUITMENT OF U.S. CITIZENS FOR VACANCIES IN IAEA SAFEGUARDS.

      SciTech Connect (OSTI)

      OCCHIOGROSSO, D.; PEPPER, S.

      2006-07-16

      The International Atomic Energy Agency (IAEA) relies on its member states to assist with recruiting qualified individuals for positions within the IAEA's secretariat. It is likewise important to the U.S. government for U.S. citizens to take positions with the IAEA to contribute to its success. It is important for persons within and outside the U.S. nuclear and safeguards industries to become aware of the job opportunities available at the IAEA and to be informed of important vacancies as they arise. The International Safeguards Project Office (ISPO) at Brookhaven National Laboratory (BNL) is tasked by the U.S. government with recruiting candidates for positions within the Department of Safeguards at the IAEA and since 1998, has been actively seeking methods for improving outreach. In addition, ISPO has been working more closely with the IAEA Division of Personnel. ISPO staff members attend trade shows to distribute information about IAEA opportunities. The shows target the nuclear industry as well as shows that are unrelated to the nuclear industry. ISPO developed a web site that provides information for prospective candidates. They have worked with the IAEA to understand its recruitment processes, to make suggestions for improvements, and to understand employment benefits so they can be communicated to potential U.S. applicants. ISPO is also collaborating with a State Department working group that is focused on increasing U.S. representation within the United Nations as a whole. Most recently Secretary of State Condoleezza Rice issued a letter to all Federal Agency heads encouraging details and transfers of their employees to international organizations to the maximum extent feasible and with due regard to their manpower requirements. She urged all federal agencies to review their detail and transfer policies and practices to ensure that employment in international organizations is promoted in a positive and active manner. In addition, she wrote that it is

    14. Theoretical investigation of thermodynamic stability and mobility of the oxygen vacancy in ThO2 –UO2 solid solutions

      DOE PAGES-Beta [OSTI]

      Liu, B.; Aidhy, D. S.; Zhang, Y.; Weber, W. J.

      2014-10-16

      The thermodynamic stability and the migration energy barriers of oxygen vacancies in ThO2 –UO2 solid solutions are investigated by density functional theory calculations. In pure ThO2, the formation energy of oxygen vacancy is 7.58 eV and 1.46 eV under O rich and O poor conditions, respectively, while its migration energy barrier is 1.97 eV. The addition of UO2 into ThO2 significantly decreases the energetics of formation and migration of the oxygen vacancy. Among the range of UO2-ThO2 solid solutions studied in this work, UO2 exhibits the lowest formation energy (5.99 eV and -0.13 eV under O rich and O poormore » conditions, respectively) and Th0.25U0.75O2 exhibits the lowest migration energy barrier (~ 1 eV). Moreover, by considering chemical potential, the phase diagram of oxygen vacancy as a function of both temperature and oxygen partial pressure is shown, which could help to gain experimental control over oxygen vacancy concentration.« less

    15. Correlation between morphology, chemical environment, and ferromagnetism in the intrinsic-vacancy dilute magnetic semiconductor Cr-doped Ga2Se3/Si(001)

      SciTech Connect (OSTI)

      Yitamben, E.N.; Arena, D.; Lovejoy, T.C.; Pakhomov, A.B.; Heald, S.M.; Negusse, E.; Ohuchi, F.S.; Olmstead, M.A.

      2011-01-28

      Chromium-doped gallium sesquiselenide, Cr:Ga{sub 2}Se{sub 3}, is a member of a new class of dilute magnetic semiconductors exploiting intrinsic vacancies in the host material. The correlation among room-temperature ferromagnetism, surface morphology, electronic structure, chromium concentration, and local chemical and structural environments in Cr:Ga{sub 2}Se{sub 3} films grown epitaxially on silicon is investigated with magnetometry, scanning tunneling microscopy, photoemission spectroscopy, and x-ray absorption spectroscopy. Inclusion of a few percent chromium in Ga{sub 2}Se{sub 3} results in laminar, semiconducting films that are ferromagnetic at room temperature with a magnetic moment 4{micro}{sub B}/Cr. The intrinsic-vacancy structure of defected-zinc-blende {beta}-Ga{sub 2}Se{sub 3} enables Cr incorporation in a locally octahedral site without disrupting long-range order, determined by x-ray absorption spectroscopy, as well as strong overlap between Cr 3d states and the Se 4p states lining the intrinsic-vacancy rows, observed with photoemission. The highest magnetic moment per Cr is observed near the solubility limit of roughly one Cr per three vacancies. At higher Cr concentrations, islanded, metallic films result, with a magnetic moment that depends strongly on surface morphology. The effective valence is Cr{sup 3+} in laminar films, with introduction of Cr{sup 0} upon islanding. A mechanism is proposed for laminar films whereby ordered intrinsic vacancies mediate ferromagnetism.

    16. Formation of the dopant-oxygen vacancy complexes and its influence on the photoluminescence emissions in Gd-doped HfO{sub 2}

      SciTech Connect (OSTI)

      Wang, L. G.; Tu, H. L.; Xiong, Y. H.; Du, J.; Wang, J. W.; Huang, G. J.; Xiao, W.

      2014-09-28

      Rare earth doping is widely used to improve the desired properties of high-k dielectric oxides. However, whether rare earth doping can suppress the formation of oxygen vacancies is still debated. By using the first-principles calculations with the generalized gradient approximation and more advanced hybrid functional, we have investigated the structural and electronic properties of the dopant-oxygen vacancy complexes in Gd-doped HfO{sub 2}. Our calculations indicate that the Gd dopants interacting with oxygen vacancies can substantially shift up the V{sub O} energy states towards the conduction band edge. This together with other effects, such as capturing the localized electrons at the oxygen vacancy by Gd dopants and suppressing the randomicity of oxygen vacancy formation, improves the reliability of the devices made from Gd-doped HfO{sub 2}. Based on our calculated results, we have presented an explanation for the experimentally observed decrease of the V{sub O}-related photoluminescence intensities upon Gd doping in HfO{sub 2}.

    17. Impact of cyclic plasma treatment on oxygen vacancy defects in TiN/HfZrO/SiON/Si gate stacks

      SciTech Connect (OSTI)

      Bhuyian, Md Nasir Uddin Misra, D.; Poddar, S.; Tapily, K.; Clark, R. D.; Consiglio, S.; Wajda, C. S.; Nakamura, G.; Leusink, G. J.

      2015-05-11

      This work evaluates the defects in HfZrO as a function of Zr addition into HfO{sub 2} and when the dielectric was subjected to a slot-plane-antenna (SPA) plasma treatment in a cyclic process to form TiN/HfZrO/SiON/Si gate stacks. The defect energy levels, estimated by temperature-dependent current-voltage measurements, suggest that Zr addition in HfO{sub 2} modifies the charge state of the oxygen vacancy formation, V{sup +}. The influence of electron affinity variation of Hf and Zr ions on the charged oxygen vacancy levels seems to have contributed to the increase in defect activation energy, E{sub a}, from 0.32 eV to 0.4 eV. The cyclic SPA plasma exposure further reduces the oxygen vacancy formation because of the film densification. When the dielectric was subjected to a constant voltage stress, the charge state oxygen vacancy formation changes to V{sup 2+} and improvement was eliminated. The trap assisted tunneling behavior, as observed by the stress induced leakage current characteristics, further supports the oxygen vacancy formation model.

    18. Theoretical investigation of thermodynamic stability and mobility of the oxygen vacancy in ThO2 –UO2 solid solutions

      SciTech Connect (OSTI)

      Liu, B.; Aidhy, D. S.; Zhang, Y.; Weber, W. J.

      2014-10-16

      The thermodynamic stability and the migration energy barriers of oxygen vacancies in ThO2 –UO2 solid solutions are investigated by density functional theory calculations. In pure ThO2, the formation energy of oxygen vacancy is 7.58 eV and 1.46 eV under O rich and O poor conditions, respectively, while its migration energy barrier is 1.97 eV. The addition of UO2 into ThO2 significantly decreases the energetics of formation and migration of the oxygen vacancy. Among the range of UO2-ThO2 solid solutions studied in this work, UO2 exhibits the lowest formation energy (5.99 eV and -0.13 eV under O rich and O poor conditions, respectively) and Th0.25U0.75O2 exhibits the lowest migration energy barrier (~ 1 eV). Moreover, by considering chemical potential, the phase diagram of oxygen vacancy as a function of both temperature and oxygen partial pressure is shown, which could help to gain experimental control over oxygen vacancy concentration.

    19. Understanding complete oxidation of methane on spinel oxides at a molecular level

      DOE PAGES-Beta [OSTI]

      Tao, Franklin Feng; Shan, Jun-jun; Nguyen, Luan; Wang, Ziyun; Zhang, Shiran; Zhang, Li; Wu, Zili; Huang, Weixin; Zeng, Shibi; Hu, P.

      2015-08-04

      It is crucial to develop a catalyst made of earth-abundant elements highly active for a complete oxidation of methane at a relatively low temperature. NiCo2O4 consisting of earth-abundant elements which can completely oxidize methane in the temperature range of 350-550 °C. Being a cost-effective catalyst, NiCo2O4 exhibits activity higher than precious-metal-based catalysts. Here we report that the higher catalytic activity at the relatively low temperature results from the integration of nickel cations, cobalt cations and surface lattice oxygen atoms/oxygen vacancies at the atomic scale. Finally, in situ studies of complete oxidation of methane on NiCo2O4 and theoretical simulations show thatmore » methane dissociates to methyl on nickel cations and then couple with surface lattice oxygen atoms to form -CH3O with a following dehydrogenation to -CH2O; a following oxidative dehydrogenation forms CHO; CHO is transformed to product molecules through two different sub-pathways including dehydrogenation of OCHO and CO oxidation.« less

    20. Updates and Status

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

      Updates and Status Current Status: Up Live Status Open Issues List of known problems, submitted bug reports and issues we are actively working on Read More » Timeline and Updates A list of major system changes and updates Read More » Email Announcements Archive An archive of email announcements sent to NERSC users regarding Edison Read More » Last edited: 2016-04-29 11:34:32

    1. Updates and Status

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

      Status Updates and Status Current Status: Retired on April 30, 2012 Announcements A list of key Franklin announcements and system changes. Read More » Email Announcements Archive An archive of email announcements sent to NERSC users regarding Franklin. Read More » Franklin Timeline This page records a brief timeline of significant events and user environment changes on Franklin. Read More » Last edited: 2016-04-29 11:34:24

    2. Updates and Status

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

      Status Updates and Status Current Status: Up Open Issues List of known problems, submitted bug reports and issues we are actively working on. Read More » Hopper Featured Announcements A list of key Hopper announcements and system changes. Read More » Hopper Email Announcements Archive An archive of email announcements sent to NERSC users regarding Hopper. Read More » Announcements Hopper OS upgrade and new SW set to default next Wed, Feb 27 21 February 2013, 10:29 am Hopper scheduled

    3. Role of oxygen vacancies in magnetic properties of LaAlO{sub 3}/SrTiO{sub 3} interface

      SciTech Connect (OSTI)

      Mohanta, N.; Taraphder, A.

      2014-04-24

      The interface of two band-insulators SrTiO{sub 3} and LaAlO{sub 3} exhibits a highly conducting two-dimensional electron gas which shows low-temperature superconductivity, ferromagnetism and many other novel properties. Several studies reveal that the oxygen vacancies at the interface have strong influence on the electronic and magnetic properties of the interface electrons. Here, we develop an insight into the effects of oxygen vacancies on the magnetic properties of the system; the oxygen vacancies help in establishing ferromagnetism which competes with superconductivity at low temperatures. Simulated Monte-Carlo annealing suggests an ordering of the oxygen vacant sites and sheds light on the experimental observation of the quenching of magnetic moment on annealing. A possible explanation for the coexistence of superconductivity and ferromagnetism is also discussed.

    4. Oxygen vacancy induced magnetization switching in Fe{sub 3}O{sub 4} epitaxial ultrathin films on GaAs(100)

      SciTech Connect (OSTI)

      Huang, Zhaocong; Chen, Qian; Zhai, Ya E-mail: jlwang@seu.edu.cn; Wang, Jinlan E-mail: jlwang@seu.edu.cn; Xu, Yongbing; Wang, Baoping

      2015-05-04

      The magnetic and transport properties of half metallic Fe{sub 3}O{sub 4}, which are sensitive to the stoichiometry, are the key issue for applications in spintronics. An anomalous enlargement of the saturation magnetic moment is found in a relatively thick sample of epitaxial Fe{sub 3}O{sub 4} film by post-growth oxidation method. The investigation of the thickness dependence of magnetic moment suggests that the enhanced magnetism moment may come from the existence of oxygen vacancies. First-principles calculations reveal that with oxygen vacancies in Fe{sub 3}O{sub 4} crystal the spin of Fe ions in the tetrahedron site near the vacancy is much easier to switch parallel to the Fe ions in the octahedron site by temperature disturbance, supported by the temperature dependence of magnetic moment of Fe{sub 3}O{sub 4} films in experiment.

    5. Long Range Ferromagnetic Order in LaCoO3-δ epitaxial films due to the interplay of epitaxial strain and oxygen vacancy ordering

      DOE PAGES-Beta [OSTI]

      Mehta, Virat; Biskup, Nevenko; Arenholz, E; Varela del Arco, Maria; Suzuki, Yuri

      2015-04-23

      We demonstrate that a combination of electronic structure modification and oxygen vacancy ordering can stabilize a long-range ferromagnetic ground state in epitaxial LaCoO3 thin films. Highest saturation magnetization values are found in the thin films in tension on SrTiO3 and (La,Sr)(Al,Ta)O3 substrates and the lowest values are found in thin films in compression on LaAlO3. Electron microscopy reveals oxygen vacancy ordering to varying degrees in all samples, although samples with the highest magnetization are the most defective. Element-specific x-ray absorption techniques reveal the presence of high spin Co2+ and Co3+ as well as low spin Co3+ in different proportions dependingmore » on the strain state. The interactions among the high spin Co ions and the oxygen vacancy superstructure are correlated with the stabilization of the long-range ferromagnetic order.« less

    6. Nanodiamond-based nanostructures for coupling nitrogen-vacancy centres to metal nanoparticles and semiconductor quantum dots

      DOE PAGES-Beta [OSTI]

      Gong, Jianxiao; Steinsultz, Nat; Ouyang, Min

      2016-06-08

      The ability to control the interaction between nitrogen-vacancy centres in diamond and photonic and/or broadband plasmonic nanostructures is crucial for the development of solid-state quantum devices with optimum performance. However, existing methods typically employ top-down fabrication, which restrict scalable and feasible manipulation of nitrogen-vacancy centres. Here, we develop a general bottom-up approach to fabricate an emerging class of freestanding nanodiamond-based hybrid nanostructures with external functional units of either plasmonic nanoparticles or excitonic quantum dots. Precise control of the structural parameters ( including size, composition, coverage and spacing of the external functional units) is achieved, representing a pre-requisite for exploring themore » underlying physics. Fine tuning of the emission characteristics through structural regulation is demonstrated by performing single-particle optical studies. Lastly, this study opens a rich toolbox to tailor properties of quantum emitters, which can facilitate design guidelines for devices based on nitrogenvacancy centres that use these freestanding hybrid nanostructures as building blocks.« less

    7. Ab-initio study of hydrogen doping and oxygen vacancy at anatase TiO{sub 2} surface

      SciTech Connect (OSTI)

      Sotoudeh, M.; Mohammadizadeh, M. R.; Hashemifar, S. J.; Abbasnejad, M.

      2014-02-15

      Density functional–pseudopotential calculations were performed to study the effects of hydrogen doping and oxygen vacancy, both individually and together, on the electronic structure and stability of (001) surface of TiO{sub 2} in the anatase phase. Based on our calculations, O/Ti termination is the most stable one, and it appears that p-states of deep and surface O atoms and d-orbitals of surface Ti atoms have roles in the valence band and, the conduction band comes from the d-orbitals of deep Ti atoms. Although, no considerable change was seen during H doping, a mid-gap state appeared below the conduction band in the O vacancy configuration. In the framework of ab-initio atomistic thermodynamics, we argue that the anatase TiO{sub 2} prefers a defected O layer termination in the [001] direction. The obtained electronic structures indicate that H doping in the bulk creates the empty mid-gap state below the conduction band and hence decreases the band gap of the system. This phenomenon may explain the enhanced photocatalytic activity of the anatase TiO{sub 2} (001) surface after hydrogenation.

    8. Visible light stimulating dual-wavelength emission and O vacancy involved energy transfer behavior in luminescence for coaxial nanocable arrays

      SciTech Connect (OSTI)

      Yang, Lei, E-mail: nanoyang@qq.com [College of Materials Science and Engineering, Hunan University, Changsha 410082 (China); Hunan Province Key Laboratory for Spray Deposition Technology and Application, Hunan University, Changsha 410082 (China); Dong, Jiazhang; Jiang, Zhongcheng [College of Materials Science and Engineering, Hunan University, Changsha 410082 (China); Pan, Anlian; Zhuang, Xiujuan [Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, Hunan University, Changsha 410082 (China)

      2014-06-14

      We report a strategy to investigate O vacancy (V{sub O}) involved energy transfer and dual-wavelength yellow emission in coaxial nanocable. By electric field deposition and subsequent sol-gel template approach, ZnO:Tb/Y{sub 2}O{sub 3}:Eu coaxial nanocable arrays are synthesized. After visible light excitation, system is promoted to O vacancy charge transfer state of V{sub O}(0/+). In the following cross relaxation, energy transfer from V{sub O} to the excitation energy level of Tb{sup 3+} in ZnO:Tb core area. While in Y{sub 2}O{sub 3}:Eu shell area, energy transfer to the excitation energy level of Eu{sup 3+}. Subsequently, dual-wavelength emission is observed. By constructing nanocable with dual-wavelength emission, yellow luminescence is obtained. Adjust doping concentration of Eu{sup 3+} or Tb{sup 3+} in the range of 0.010.05, chromaticity coordinates of ZnO:Tb/Y{sub 2}O{sub 3}:Eu nanocable stably stays at yellow region in color space except ZnO:Tb{sub 0.01}/Y{sub 2}O{sub 3}:Eu{sub 0.01}. As Vo states act as media in energy transfer process in nanocablers, visible light can stimulate dual-wavelength emissions. Yellow luminescent nanocable arrays will have great applications in light-emitting diode luminescence.

    9. Nuclear proliferation status report. Status report

      SciTech Connect (OSTI)

      1992-07-01

      This report contains information concerning the nuclear proliferation status of the following countries: (1) Russia, (2) Ukraine, (3) Belarus, (4) Kazakhstan, (5) Israel, (6) India, (7) Pakistan, (8) South Africa, (9) North Korea, (10) Iraq, (11) Iran, (12) Lybia, (13) Algeria, (14) Syria, (15) Brazil, (16) Argentina, and (17) Taiwan.

    10. Successful horizontal completions require an integrated approach

      SciTech Connect (OSTI)

      Richard, B.; Smejkal, K.; Penberthy, W. Jr.

      1997-01-01

      While a perfect well completion may not exist, depleting a hydrocarbon resource at a sustained high rate--without a workover--is the ultimate goal. Unfortunately, many horizontal well completions fail to achieve this due to wellbore damage or loss of reservoir pressure. These conditions manifest themselves in reduced production rates, extended well life and reduced profitability. Standard completion techniques are not always compatible with each other for site specific well applications. The combination of two incompatible technologies or slight changes in a completion procedure may negatively impact productivity. Hence, the most successful horizontal completion results are obtained using a compatible integrated system approach--an approach that carefully combines the best completion tools and processes to deliver an undamaged well completed at the lowest possible cost. After studying the compatibilities of various drill-in fluids, screens, filter cakes and gravel packs, recommended procedures are presented for successfully completing horizontal wells.

    11. Geothermal drilling ad completion technology development program. Semi-annual progress report, April-September 1979

      SciTech Connect (OSTI)

      Varnado, S.G.

      1980-05-01

      The progress, status, and results of ongoing Research and Development (R and D) within the Geothermal Drilling and Completion Technology Development Program are described. The program emphasizes the development of geothermal drilling hardware, drilling fluids, and completion technology. Advanced drilling systems are also under development. The goals of the program are to develop the technology required to reduce well costs by 25% by 1982 and by 50% by 1986.

    12. Geothermal drilling and completion technology development program. Quarterly progress report, April-June 1980

      SciTech Connect (OSTI)

      Varnado, S.G.

      1980-07-01

      The progress, status, and results of ongoing research and development (R and D) within the Geothermal Drilling and Completion Technology Development Program are reported. The program emphasizes the development of geothermal drilling hardware, drilling fluids, completion technology, and lost circulation control methods. Advanced drilling systems are also under development. The goals of the program are to develop the technology required to reduce well costs by 25% by 1983 and by 50% by 1987.

    13. Completing Salt Waste Processing Facility is an EM Priority and Key to SRS

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

      Cleanup Progress | Department of Energy Completing Salt Waste Processing Facility is an EM Priority and Key to SRS Cleanup Progress Completing Salt Waste Processing Facility is an EM Priority and Key to SRS Cleanup Progress January 14, 2016 - 12:40pm Addthis SRS employees and contractors gather to celebrate SWPF contractor Parsons' Star status, the highest recognition in the Voluntary Protection Program (VPP). DOE launched VPP in 1994 to encourage and recognize excellence in occupational

    14. Geothermal drilling and completion technology development program. Annual progress report, October 1979-September 1980

      SciTech Connect (OSTI)

      Varnado, S.G.

      1980-11-01

      The progress, status, and results of ongoing research and development (R and D) within the Geothermal Drilling and Completion Technology Development Program are described. The program emphasizes the development of geothermal drilling hardware, drilling fluids, completion technology, and lost circulation control methods. Advanced drilling systems are also under development. The goals of the program are to develop the technology required to reduce well costs by 25% by 1983 and by 50% by 1987.

    15. Status of the Majorana Demonstrator

      DOE PAGES-Beta [OSTI]

      Cuesta, C.; Abgrall, N.; Arnquist, I. J.; Avignone, III, F. T.; Barabash, A. S.; Bertrand, F. E.; Brudanin, V.; Busch, M.; Buuck, M.; Byram, D.; et al

      2015-08-06

      The Majorana Collaboration is constructing the Majorana Demonstrator, an ultra-low background, 40-kg modular high purity Ge detector array to search for neutrinoless double-beta decay in 76Ge. In view of the next generation of tonne-scale Ge-based neutrinoless double-beta decay searches that will probe the neutrino mass scale in the inverted-hierarchy region, a major goal of the Demonstrator is to demonstrate a path forward to achieving a background rate at or below 1 count/tonne/year in the 4 keV region of interest around the Q-value at 2039 keV. Lastly, the current status of the Demonstrator is discussed, as are plans for its completion.

    16. Status of the Majorana Demonstrator

      SciTech Connect (OSTI)

      Cuesta, C.; Abgrall, N.; Arnquist, I. J.; Avignone, III, F. T.; Barabash, A. S.; Bertrand, F. E.; Brudanin, V.; Busch, M.; Buuck, M.; Byram, D.; Caldwell, A. S.; Chan, Y. -D.; Christofferson, C. D.; Detwiler, J. A.; Efremenko, Yu.; Ejiri, H.; Elliott, S. R.; Galindo-Uribarri, A.; Giovanetti, G. K.; Goett, J.; Green, M. P.; Gruszko, J.; Guinn, I. S.; Guiseppe, V. E.; Henning, R.; Hoppe, E. W.; Howard, S.; Howe, M. A.; Jasinski, B. R.; Keeter, K. J.; Kidd, M. F.; Konovalov, S. I.; Kouzes, R. T.; LaFerriere, B. D.; Leon, J.; MacMullin, J.; Martin, R. D.; Meijer, S. J.; Mertens, S.; Orrell, J. L.; O'Shaughnessy, C.; Overman, N. R.; Poon, A. W. P.; Radford, D. C.; Rager, J.; Rielage, K.; Robertson, R. G. H.; Romero-Romero, E.; Schmitt, C.; Shanks, B.; Shirchenko, M.; Snyder, N.; Suriano, A. M.; Tedeschi, D.; Timkin, V.; Trimble, J. E.; Varner, R. L.; Vasilyev, S.; Vetter, K.; Vorren, K.; White, B. R.; Wilkerson, J. F.; Wiseman, C.; Xu, W.; Yakushev, E.; Yu, C. -H.; Yumatov, V.

      2015-08-06

      The Majorana Collaboration is constructing the Majorana Demonstrator, an ultra-low background, 40-kg modular high purity Ge detector array to search for neutrinoless double-beta decay in 76Ge. In view of the next generation of tonne-scale Ge-based neutrinoless double-beta decay searches that will probe the neutrino mass scale in the inverted-hierarchy region, a major goal of the Demonstrator is to demonstrate a path forward to achieving a background rate at or below 1 count/tonne/year in the 4 keV region of interest around the Q-value at 2039 keV. Lastly, the current status of the Demonstrator is discussed, as are plans for its completion.

    17. Acquisition & Financial Assistance Rules Status | Department...

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

      Acquisition & Financial Assistance Rules Status Acquisition & Financial Assistance Rules Status Subscribe to Acquisition & Financial Assistance Rules Status Updates PDF icon ...

    18. Direct memory access transfer completion notification

      DOE Patents [OSTI]

      Archer, Charles J.; Blocksome, Michael A.; Parker, Jeffrey J.

      2011-02-15

      DMA transfer completion notification includes: inserting, by an origin DMA engine on an origin node in an injection first-in-first-out (`FIFO`) buffer, a data descriptor for an application message to be transferred to a target node on behalf of an application on the origin node; inserting, by the origin DMA engine, a completion notification descriptor in the injection FIFO buffer after the data descriptor for the message, the completion notification descriptor specifying a packet header for a completion notification packet; transferring, by the origin DMA engine to the target node, the message in dependence upon the data descriptor; sending, by the origin DMA engine, the completion notification packet to a local reception FIFO buffer using a local memory FIFO transfer operation; and notifying, by the origin DMA engine, the application that transfer of the message is complete in response to receiving the completion notification packet in the local reception FIFO buffer.

    19. Direct memory access transfer completion notification

      DOE Patents [OSTI]

      Archer, Charles J. , Blocksome; Michael A. , Parker; Jeffrey J.

      2011-02-15

      Methods, systems, and products are disclosed for DMA transfer completion notification that include: inserting, by an origin DMA on an origin node in an origin injection FIFO, a data descriptor for an application message; inserting, by the origin DMA, a reflection descriptor in the origin injection FIFO, the reflection descriptor specifying a remote get operation for injecting a completion notification descriptor in a reflection injection FIFO on a reflection node; transferring, by the origin DMA to a target node, the message in dependence upon the data descriptor; in response to completing the message transfer, transferring, by the origin DMA to the reflection node, the completion notification descriptor in dependence upon the reflection descriptor; receiving, by the origin DMA from the reflection node, a completion packet; and notifying, by the origin DMA in response to receiving the completion packet, the origin node's processing core that the message transfer is complete.

    20. Subsea completions set for growth, standardization

      SciTech Connect (OSTI)

      Baugh, B.F.

      1988-08-22

      There have been enough subsea completion systems installed to permit categorization of some basic combinations and to permit users to choose from alternative styles. Nevertheless, advances in engineering standards, increasing capabilities, and a growing market will continue to make this an exciting area during the next 10 to 20 years. Fundamentally, subsea completion systems provide the same capabilities as surface completion and injection wells. However, they are of course more complex to accommodate special needs associated with subsea and remote operations. As of the end of 1987, there had been 472 subsea completions installed. A total of 671 future subsea completions have been identified. These completions have been characterized by differences in styles, applications, manufacturer designs, and user preferences. Subsea completions are characterized by many alternatives for construction and operation. As a result, they cannot be simply categorized by as few styles. Identifying these basic combinations gives the reader the capability to envision the alternatives which might suit his or her particular needs.

    1. Weekly Petroleum Status Report

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

      208(2016-46) Distribution Category UC-98 Data for Week Ended: November 11, 2016 Weekly Petroleum Status Report Weekly Petroleum Status Report/Energy Information Administration ii EIA DATA ARE AVAILABLE IN ELECTRONIC FORM The tables in the Weekly Petroleum Status Report (WPSR) are posted to the web site after 10:30 a.m. Eastern Standard Time (EST) on Wednesdays in CSV and XLS formats. PDF fles are posted to the web site after 1:00 p.m. on Wednesdays. For some weeks that include holidays, posting

    2. Oil shale: Technology status report

      SciTech Connect (OSTI)

      Not Available

      1986-10-01

      This report documents the status of the US Department of Energy's (DOE) Oil Shale Program as of the end of FY 86. The report consists of (1) a status of oil shale development, (2) a description of the DOE Oil Shale Program, (3) an FY 86 oil shale research summary, and (4) a summary of FY 86 accomplishments. Discoveries were made in FY 86 about the physical and chemical properties and behavior of oil shales, process chemistry and kinetics, in situ retorting, advanced processes, and the environmental behavior and fate of wastes. The DOE Oil Shale Program shows an increasing emphasis on eastern US oil shales and in the development of advanced oil shale processing concepts. With the award to Foster Wheeler for the design of oil shale conceptual plants, the first step in the development of a systems analysis capability for the complete oil shale process has been taken. Unocal's Parachute Creek project, the only commercial oil shale plant operating in the United States, is operating at about 4000 bbl/day. The shale oil is upgraded at Parachute Creek for input to a conventional refinery. 67 refs., 21 figs., 3 tabs.

    3. Recombination radius of a Frenkel pair and capture radius of a self-interstitial atom by vacancy clusters in bcc Fe

      DOE PAGES-Beta [OSTI]

      Nakashima, Kenichi; Stoller, Roger E.; Xu, Haixuan

      2015-01-01

      The recombination radius of a Frenkel pair is a fundamental parameter for the object kinetic Monte Carlo (OKMC) and mean field rate theory (RT) methods that are used to investigate irradiation damage accumulation in neutron irradiated nuclear materials. The recombination radius in bcc Fe has been studied both experimentally and numerically, however there is no general consensus about its value. The detailed atomistic processes of recombination also remain uncertain. Values from 1:0a₀ to 3:3a₀ have been employed as a recombination radius in previous studies using OKMC and RT. The recombination process of a Frenkel pair is investigated at the atomicmore » level using the self-evolved atomistic kinetic Monte Carlo (SEAKMC) method in this paper. SEAKMC calculations reveal that a self-interstitial atom recombines with a vacancy in a spontaneous reaction from several nearby sites following characteristic pathways. The recombination radius of a Frenkel pair is estimated to be 2.26a₀ by taking the average of the recombination distances from 80 simulation cases. This value agrees well with the experimental estimate. In addition, we apply these procedures to the capture radius of a self-interstitial atom by a vacancy cluster. The capture radius is found to gradually increase with the size of the vacancy cluster. The fitting curve for the capture radius is obtained as a function of the number of vacancies in the cluster.« less

    4. Roles of Vacancy/Interstitial Diffusion and Segregation in the Microchemistry at Grain Boundaries of Irradiated Fe-Cr-Ni alloys

      DOE PAGES-Beta [OSTI]

      Yang, Ying; Field, Kevin G.; Allen, Todd R.; Busby, Jeremy T.

      2016-02-23

      A detailed analysis of the diffusion fluxes near and at grain boundaries of irradiated Fe–Cr–Ni alloys, induced by preferential atom-vacancy and atom-interstitial coupling, is presented. The diffusion flux equations were based on the Perks model formulated through the linear theory of the thermodynamics of irreversible processes. The preferential atom-vacancy coupling was described by the mobility model, whereas the preferential atom-interstitial coupling was described by the interstitial binding model. The composition dependence of the thermodynamic factor was modeled using the CALPHAD approach. The calculated fluxes up to 10 dpa suggested the dominant diffusion mechanism for chromium and iron is via vacancy,more » while that for nickel can swing from the vacancy to the interstitial dominant mechanism. The diffusion flux in the vicinity of a grain boundary was found to be greatly modified by the segregation induced by irradiation, leading to the oscillatory behavior of alloy compositions in this region.« less

    5. Cation and Vacancy Disorder in U1-yNdyO2.00-X Alloys

      SciTech Connect (OSTI)

      Barabash, Rozaliya I.; Voit, Stewart L.; Aidhy, Dilpuneet S.; Lee, Seung Min; Knight, Travis W.; Sprouster, David J.; Ecker, Lynne E.

      2015-09-14

      In this study, the intermixing and clustering of U/Nd, O, and vacancies were studied by both laboratory and synchrotron-based x-ray diffraction in U1-yNdyO2-X alloys. It was found that an increased holding time at the high experimental temperature during initial alloy preparation results in a lower disorder of the Nd distribution in the alloys. Adjustment of the oxygen concentration in the U1-yNdyO2-X alloys with different Nd concentrations was accompanied by the formation of vacancies on the oxygen sublattice and a nanocrystalline component. The lattice parameters in the U1-yNdyO2-X alloys were also found to deviate significantly from Vegard's law when the Nd concentration was high (53%) and decreased with increasing oxygen concentration. Such changes indicate the formation of large vacancy concentrations during oxygen adjustment at these high temperatures. Finally, the change in the vacancy concentration after the oxygen adjustment was estimated relative to Nd concentration and oxygen stoichiometry.

    6. Tailoring Vacancies Far Beyond Intrinsic Levels Changes the Carrier Type and Optical Response in Monolayer MoSe 2-x Crystals

      DOE PAGES-Beta [OSTI]

      Mahjouri-Samani, Masoud; Liang, Liangbo; Oyedele, Akinola; Kim, Yong-Sung; Tian, Mengkun; Cross, Nicholas; Wang, Kai; Lin, Ming-Wei; Boulesbaa, Abdelaziz; Rouleau, Christopher M.; et al

      2016-07-14

      Defect engineering has been a critical step in controlling the transport characteristics of electronic devices, and the ability to create, tune, and annihilate defects is essential to enable the range of next-generation devices. Whereas defect formation has been well-demonstrated in three-dimensional semiconductors, similar exploration of the heterogeneity in atomically thin two-dimensional semiconductors and the link between their atomic structures, defects, and properties has not yet been extensively studied. In this paper, we demonstrate the growth of MoSe2–x single crystals with selenium (Se) vacancies far beyond intrinsic levels, up to ~20%, that exhibit a remarkable transition in electrical transport properties frommore » n- to p-type character with increasing Se vacancy concentration. A new defect-activated phonon band at ~250 cm-1 appears, and the A1g Raman characteristic mode at 240 cm-1 softens toward ~230 cm-1 which serves as a fingerprint of vacancy concentration in the crystals. We show that post-selenization using pulsed laser evaporated Se atoms can repair Se-vacant sites to nearly recover the properties of the pristine crystals. Finally, first-principles calculations reveal the underlying mechanisms for the corresponding vacancy-induced electrical and optical transitions.« less

    7. Enhancement of transition temperature in Fe{sub x}Se{sub 0.5}Te{sub 0.5} film via iron vacancies

      SciTech Connect (OSTI)

      Zhuang, J. C.; Yeoh, W. K. E-mail: zxshi@seu.edu.cn; Cui, X. Y.; Ringer, S. P.; Kim, J. H.; Shi, D. Q.; Wang, X. L.; Dou, S. X.; Shi, Z. X. E-mail: zxshi@seu.edu.cn

      2014-06-30

      The effects of iron deficiency in Fe{sub x}Se{sub 0.5}Te{sub 0.5} thin films (0.8 ≤ x ≤ 1) on superconductivity and electronic properties have been studied. A significant enhancement of the superconducting transition temperature (T{sub C}) up to 21 K was observed in the most Fe deficient film (x = 0.8). Based on the observed and simulated structural variation results, there is a high possibility that Fe vacancies can be formed in the Fe{sub x}Se{sub 0.5}Te{sub 0.5} films. The enhancement of T{sub C} shows a strong relationship with the lattice strain effect induced by Fe vacancies. Importantly, the presence of Fe vacancies alters the charge carrier population by introducing electron charge carriers, with the Fe deficient film showing more metallic behavior than the defect-free film. Our study provides a means to enhance the superconductivity and tune the charge carriers via Fe vacancy, with no reliance on chemical doping.

    8. Interplay between gadolinium dopants and oxygen vacancies in HfO{sub 2}: A density functional theory plus Hubbard U investigation

      SciTech Connect (OSTI)

      Zhang, Wei; Hou, Z. F.

      2014-03-28

      The influence of gadolinium (Gd) doping on the oxygen vacancy (V{sub O}) in monoclinic HfO{sub 2} have been studied by the first-principles calculations within the spin-polarized generalized gradient approximation plus Hubbard U approach. It is found that the Gd dopant and V{sub O} show strong attractive interaction, resulting in a cooperative effect that the substitution of Gd for Hf (Gd{sub Hf}) would increase the probability of oxygen vacancies generation and vice versa. The Gd{sub Hf} is more energetically favorable to be next to the vacancy site of a three-coordinated oxygen (O3), forming a complex defect Gd{sub Hf} + V{sub O}. A single Gd{sub Hf} acts a hole donor and passivates the defect states of V{sub O}. Our results suggest that the decrease of the V{sub O}-related defect states observed in the photoluminescence spectra of Gd-HfO{sub 2} is because Gd doping passivates the defect states of V{sub O}, rather than caused by decrease of V{sub O} concentration. Our findings would clarify the debate about the influence of Gd doping on the oxygen vacancies in HfO{sub 2}.

    9. Study of the relation between oxygen vacancies and ferromagnetism in Fe-doped TiO{sub 2} nano-powders

      SciTech Connect (OSTI)

      Mudarra Navarro, Azucena M.; Rodríguez Torres, Claudia E. Fabiana Cabrera, A.; Bilovol, Vitaliy; Errico, L. A.; Weissmann, M.

      2014-06-14

      In this work, we present an experimental and theoretical study of structural and magnetic properties of Fe doped rutile TiO{sub 2} nanopowders. We show that Fe-doping induces the formation of oxygen vacancies in the first-sphere coordination of iron ions, which are in +2 and +3 oxidation states. We found that Fe ions form dimers that share one oxygen vacancy in the case of Fe{sup 3+} and two oxygen vacancies in the case of Fe{sup 2+}. The saturation magnetization is almost independent of iron concentration and slightly increases with the relative fraction of Fe{sup 2+}. Ab initio calculations show that two Fe ions sharing an oxygen vacancy are coupled ferromagnetically, forming a bound magnetic polaron (BMP), but two neighbor BMPs are aligned antiparallel to each other. Extra electron doping plays a fundamental role mediating the magnetic coupling between the ferromagnetic entities: carriers, possibly concentrated at grain boundaries, mediate between the BMP to produce ferromagnetic alignment.

    10. Recombination radius of a Frenkel pair and capture radius of a self-interstitial atom by vacancy clusters in bcc Fe

      SciTech Connect (OSTI)

      Nakashima, Kenichi; Stoller, Roger E.; Xu, Haixuan

      2015-08-04

      The recombination radius of a Frenkel pair is a fundamental parameter for the object kinetic Monte Carlo (OKMC) and mean field rate theory (RT) methods that are used to investigate irradiation damage accumulation in neutron irradiated nuclear materials. The recombination radius in bcc Fe has been studied both experimentally and numerically, however there is no general consensus about its value. The detailed atomistic processes of recombination also remain uncertain. Values from 1:0a? to 3:3a? have been employed as a recombination radius in previous studies using OKMC and RT. The recombination process of a Frenkel pair is investigated at the atomic level using the self-evolved atomistic kinetic Monte Carlo (SEAKMC) method in this paper. SEAKMC calculations reveal that a self-interstitial atom recombines with a vacancy in a spontaneous reaction from several nearby sites following characteristic pathways. The recombination radius of a Frenkel pair is estimated to be 2.26a? by taking the average of the recombination distances from 80 simulation cases. This value agrees well with the experimental estimate. In addition, we apply these procedures to the capture radius of a self-interstitial atom by a vacancy cluster. The capture radius is found to gradually increase with the size of the vacancy cluster. The fitting curve for the capture radius is obtained as a function of the number of vacancies in the cluster.

    11. Joint contributions of Ag ions and oxygen vacancies to conducting filament evolution of Ag/TaO{sub x}/Pt memory device

      SciTech Connect (OSTI)

      Chung, Yu-Lung; Cheng, Wen-Hui; Chen, Wei-Chih; Jhan, Sheng-An; Chen, Jen-Sue; Jeng, Jiann-Shing

      2014-10-28

      The electroforming and resistive switching behaviors in the Ag/TaO{sub x}/Pt trilayer structure are investigated under a continual change of temperatures between 300 K and 100 K to distinguish the contributions of Ag ions and oxygen vacancies in developing of conducting filaments. For either electroforming or resistive switching, a significantly higher forming/set voltages is needed as the device is operated at 100 K, as compared to that observed when operating at 300 K. The disparity in forming/set voltages of Ag/TaO{sub x}/Pt operating at 300 K and 100 K is attributed to the contribution of oxygen vacancies, in addition to Ag atoms, in formation of conducting filament at 100 K since the mobilities of oxygen vacancies and Ag ions become comparable at low temperature. The presence of oxygen vacancy segment in the conducting filament also modifies the reset current from a gradually descending behavior (at 300 K) to a sharp drop (at 100 K). Furthermore, the characteristic set voltage and reset current are irreversible as the operation temperature is brought from 100 K back to 300 K, indicating the critical role of filament constituents on the switching behaviors of Ag/oxide/Pt system.

    12. Direct observation of oxygen-vacancy-enhanced polarization in a SrTiO3-buffered ferroelectric BaTiO3 film on GaAs

      DOE PAGES-Beta [OSTI]

      Qiao, Q.; Zhang, Y.; Contreras-Guerrero, Rocio; Droopad, Ravi; Pantelides, S. T.; Pennycook, Stephen J.; Ogut, Serdar; Klie, Robert F.

      2015-11-16

      The integration of functional oxide thin-films on compound semiconductors can lead to a class of reconfigurable spin-based optoelectronic devices if defect-free, fully reversible active layers are stabilized. However, previous first-principles calculations predicted that SrTiO3 thin filmsgrown on Si exhibit pinned ferroelectric behavior that is not switchable, due to the presence of interfacial vacancies. Meanwhile, piezoresponse force microscopy measurements have demonstrated ferroelectricity in BaTiO3 grown on semiconductor substrates. The presence of interfacial oxygen vacancies in such complex-oxide/semiconductor systems remains unexplored, and their effect on ferroelectricity is controversial. We also use a combination of aberration-corrected scanning transmission electron microscopy and first-principles densitymore » functional theory modeling to examine the role of interfacial oxygen vacancies on the ferroelectricpolarization of a BaTiO3 thin filmgrown on GaAs. Moreover, we demonstrate that interfacial oxygen vacancies enhance the polar discontinuity (and thus the single domain, out-of-plane polarization pinning in BaTiO3), and propose that the presence of surface charge screening allows the formation of switchable domains.« less

    13. Simulation of xenon, uranium vacancy and interstitial diffusion and grain boundary segregation in UO2

      SciTech Connect (OSTI)

      Andersson, Anders D.; Tonks, Michael R.; Casillas, Luis; Nerikar, Pankaj; Vyas, Shyam; Uberuaga, Blas P.; Stanek, Christopher R.

      2014-10-31

      In light water reactor fuel, gaseous fission products segregate to grain boundaries, resulting in the nucleation and growth of large intergranular fission gas bubbles. Based on the mechanisms established from density functional theory (DFT) and empirical potential calculations 1, continuum models for diffusion of xenon (Xe), uranium (U) vacancies and U interstitials in UO2 have been derived for both intrinsic conditions and under irradiation. Segregation of Xe to grain boundaries is described by combining the bulk diffusion model with a model for the interaction between Xe atoms and three different grain boundaries in UO2 ( Σ5 tilt, Σ5 twist and a high angle random boundary),as derived from atomistic calculations. All models are implemented in the MARMOT phase field code, which is used to calculate effective Xe and U diffusivities as well as redistribution for a few simple microstructures.

    14. Electronic and crystal structure changes induced by in-plane oxygen vacancies in multiferroic YMnO3

      DOE PAGES-Beta [OSTI]

      Cheng, Shaobo; Meng, Qingping; Li, Mengli; Duan, Wenhui; Zhao, Y. G.; Sun, X. F.; Zhu, Yimei; Zhu, Jing

      2016-02-08

      Here, the widely spread oxygen vacancies (VO) in multiferroic materials can strongly affect their physical properties. However, their exact influence has rarely been identified in hexagonal manganites. Here, with the combined use of transmission electron microscopy (TEM) and first-principles calculations, we have systematically studied the electronic and crystal structure modifications induced by VO located at the same Mn atomic plane (in-plane VO). Our TEM experiments reveal that the easily formed in-plane VO not only influence the electronic structure of YMnO3 but alter the in-plane Wyckoff positions of Mn ions, which may subsequently affect the intraplane and interplane exchange interaction ofmore » Mn ions. The ferroelectricity is also impaired due to the introduction of VO. Further calculations confirm these electronic and structural changes and modifications. Our results indicate that the electronic and crystal structure of YMnO3 can be manipulated by the creation of VO.« less

    15. NWP Small Business Status through June 2014

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

      Small Business Status through June 2014

    16. The Effect of Structural Vacancies on the Thermoelectric Properties of (Cu2Te)1-x(Ga2Te3)x

      SciTech Connect (OSTI)

      Ye, Zuxin; Cho, Jung Y; Tessema, Misle; Salvador, James R.; Waldo, Richard; Wang, Hsin; Cai, Wei

      2013-01-01

      We have studied the effects of structural vacancies on the thermoelectric properties of the ternary compounds (Cu2Te)1-x(Ga2Te3)x (x = 0.5, 0.55, 0.571, 0.6, 0.625, 0.667 and 0.75), which are solid solutions found in the pseudo-binary phase diagram for Cu2Te and Ga2Te3. This system possesses tunable structural vacancy concentrations. The x= 0.5 phase, CuGaTe2, is nominally devoid of structural vacancies, while the rest of the compounds contain varying amounts of these features, and the volume density of vacancies increases with Ga2Te3 content. The sample with x = 0.5, 0.55, 0.571, 0.6, 0.625 crystallize in the chalcopyrite structure while the x = 0.667 and 0.75 adopt the Ga2Te3 defect zinc blende structure. Strong scattering of heat carrying phonons by structural defects, leads to the reduction of thermal conductivity, which is beneficial to the thermoelectric performance of materials. On the other hand, these defects also scatter charge carriers and reduce the electrical conductivity. All the samples investigated are p-type semiconductors as inferred by the signs of their respective Hall (RH) and Seebeck (S) coefficients. The structural vacancies were found to scatter phonons strongly, while a combination of increased carrier concentration, and vacancies decreases the Hall mobility ( H), degrading the overall thermoelectric performance. The room temperature H drops from 90 cm2/V s for CuGaTe2 to 13 cm2/V s in Cu9Ga11Te21 and 4.6 cm2/V s in CuGa3Te5. The low temperature thermal conductivity decreases significantly with higher Ga2Te3 concentrations (higher vacancy concentration) due to increased point defect scattering which dominate thermal resistance terms. At high temperatures, the dependence of thermal conductivity on the Ga2Te3 content is less significant. The presence of strong Umklapp scattering leads to low thermal conductivity at high temperatures for all samples investigated. The highest ZT among the samples in this study was found for the defect-free Cu

    17. NIF Status Update - 2014

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

      news NIF Status Update - 2014 May Gigabar Equation-of-State Experiment Reaches Record Pressures On May 29, the NIF Team fired two gigabar (Gbar)-class equation-of-state experiments...

    18. Fast Global File Status

      Energy Science and Technology Software Center (OSTI)

      2013-01-01

      Fast Global File Status (FGFS) is a system software package that implimints a scalable mechanism to retrieve file information, such as its degree of distribution or replication and consistency.

    19. Small Business Status

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

      Teaming Arrangements on Small Business Status The Department of Energy is planning to set aside for small businesses a number of acquisitions of a very complex nature, requiring a ...

    20. o CNMS Status Update

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

      Town Hall User Meeting (see attached slides) * Agenda: o Intro of UEC o CNMS Status Update o UEC activities o Nominations for open seat on the UEC * Activities o Monthly Telecon o...

    1. PDSF Login Node Status

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

      Help Staff Blogs Request Repository Mailing List Need Help? Out-of-hours Status and Password help Call operations: 1-800-66-NERSC, option 1 or 510-486-6821 Account Support ...

    2. Updates and Status

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

      Help Staff Blogs Request Repository Mailing List Need Help? Out-of-hours Status and Password help Call operations: 1-800-66-NERSC, option 1 or 510-486-6821 Account Support ...

    3. Safety system status monitoring

      SciTech Connect (OSTI)

      Lewis, J.R.; Morgenstern, M.H.; Rideout, T.H.; Cowley, P.J.

      1984-03-01

      The Pacific Northwest Laboratory has studied the safety aspects of monitoring the preoperational status of safety systems in nuclear power plants. The goals of the study were to assess for the NRC the effectiveness of current monitoring systems and procedures, to develop near-term guidelines for reducing human errors associated with monitoring safety system status, and to recommend a regulatory position on this issue. A review of safety system status monitoring practices indicated that current systems and procedures do not adequately aid control room operators in monitoring safety system status. This is true even of some systems and procedures installed to meet existing regulatory guidelines (Regulatory Guide 1.47). In consequence, this report suggests acceptance criteria for meeting the functional requirements of an adequate system for monitoring safety system status. Also suggested are near-term guidelines that could reduce the likelihood of human errors in specific, high-priority status monitoring tasks. It is recommended that (1) Regulatory Guide 1.47 be revised to address these acceptance criteria, and (2) the revised Regulatory Guide 1.47 be applied to all plants, including those built since the issuance of the original Regulatory Guide.

    4. Direct memory access transfer completion notification

      DOE Patents [OSTI]

      Archer, Charles J.; Blocksome, Michael A.; Parker, Jeffrey J.

      2010-08-17

      Methods, apparatus, and products are disclosed for DMA transfer completion notification that include: inserting, by an origin DMA engine on an origin compute node in an injection FIFO buffer, a data descriptor for an application message to be transferred to a target compute node on behalf of an application on the origin compute node; inserting, by the origin DMA engine, a completion notification descriptor in the injection FIFO buffer after the data descriptor for the message, the completion notification descriptor specifying an address of a completion notification field in application storage for the application; transferring, by the origin DMA engine to the target compute node, the message in dependence upon the data descriptor; and notifying, by the origin DMA engine, the application that the transfer of the message is complete, including performing a local direct put operation to store predesignated notification data at the address of the completion notification field.

    5. Geothermal Well Completion Tests | Open Energy Information

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

      and immediately after drilling activities are completed. Author Hagen Hole Conference Petroleum Engineering Summer School; Dubrovnik, Croatia; 20080609 Published NA, 2008 DOI...

    6. Complete information acquisition in scanning probe microscopy...

      Office of Scientific and Technical Information (OSTI)

      Citation Details In-Document Search Title: Complete ... Here, we report a fundamentally new approach for SPM imaging ... Type: Accepted Manuscript Journal Name: Nature ...

    7. Floating Oscillating Water Column Reference Model Completed

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

      Floating Oscillating Water Column Reference Model Completed - Sandia Energy Energy Search ... Energy Conversion Efficiency Solar Energy Wind Energy Water Power Supercritical CO2 ...

    8. Uranium Processing Facility Site Readiness Subproject Completed...

      National Nuclear Security Administration (NNSA)

      Work completed includes relocation of Bear Creek Road; a new bridge; relocation of several potable water lines; rerouting of overhead electrical lines; construction of a haul-road ...

    9. Princeton Plasma Physics Laboratory achieves milestone, completing...

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

      Princeton Plasma Physics Laboratory achieves milestone, completing first part of heart of ... Engineers and technicians at the U.S. Department of Energy's Princeton Plasma Physics ...

    10. Lab completes first Recovery Act cleanup project

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

      waste landfill. "The Recovery Act has been a huge boost to our overall cleanup efforts," said Michael Graham, LANL's associate director of environmental programs. "Completing...

    11. JOBAID-LAUNCHING AND COMPLETING ASSIGNED SURVEY

      Energy.gov [DOE]

      The purpose of this job aid is to guide users through the step-by-step process of launching and completing assigned surverys.

    12. Specificity and completion time distributions of biochemical...

      Office of Scientific and Technical Information (OSTI)

      Journal Article: Specificity and completion time distributions of ... Using the Laplace transform of the corresponding chemical master equation, we obtain an analytical solution for the ...

    13. Waste Treatment Facility Passes Federal Inspection, Completes...

      Office of Environmental Management (EM)

      Completes Final Milestone, Begins Startup Waste Treatment Facility Passes Federal ... The Idaho site today initiated the controlled, phased startup of a new waste treatment ...

    14. Environmental Remediation program completes legacy mercury cleanup...

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

      Stories Legacy slope-side cleanup Environmental Remediation program completes legacy mercury cleanup near Smith's Marketplace Los Alamos National Laboratory performed a ...

    15. Web Operational Status Boards

      SciTech Connect (OSTI)

      2004-04-16

      Web Operational Status Boards (WebOSB)is a web-based application designed to acquire, display, and update highly dynamic status information between multiple users and jurisdictions. WebOSB is able to disseminate real-time status information?support the timely sharing of information?with constant, dynamic updates via personal computers and the Internet between emergency operations centers (EOCs), incident command centers, and to users outside the EOC who need to know the information (hospitals, shelters, schools). The WebOSB application far exceeds outdated information-sharing methods used by emergency workers: whiteboards, Word and Excel documents, or even locality-specific Web sites. WebOSB?s capabilities include the following elements: - Secure access. Multiple users can access information on WebOSB from any personal computer with Internet access and a secure ID. Privileges are use to control access and distribution of status information and to identify users who are authorized to add or edit information. - Simultaneous update. WebOSB provides options for users to add, display, and update dynamic information simultaneously at all locations involved in the emergency management effort, A single status board can be updated from multiple locations enabling shelters and hospitals to post bed availability or list decontamination capability. - On-the-fly modification. Allowing the definition of an existing status board to be modified on-the-fly can be an asset during an emergency, where information requirements can change quickly. The status board designer feature allows an administrator to quickly define, modi,, add to, and implement new status boards in minutes without needing the help of Web designers and computer programmers. - Publisher/subscriber notification. As a subscriber, each user automatically receives notification of any new information relating to specific status boards. The publisher/subscriber feature automatically notified each user of any new

    16. Web Operational Status Boards

      Energy Science and Technology Software Center (OSTI)

      2004-04-16

      Web Operational Status Boards (WebOSB)is a web-based application designed to acquire, display, and update highly dynamic status information between multiple users and jurisdictions. WebOSB is able to disseminate real-time status information—support the timely sharing of information—with constant, dynamic updates via personal computers and the Internet between emergency operations centers (EOCs), incident command centers, and to users outside the EOC who need to know the information (hospitals, shelters, schools). The WebOSB application far exceeds outdated information-sharingmore » methods used by emergency workers: whiteboards, Word and Excel documents, or even locality-specific Web sites. WebOSB’s capabilities include the following elements: - Secure access. Multiple users can access information on WebOSB from any personal computer with Internet access and a secure ID. Privileges are use to control access and distribution of status information and to identify users who are authorized to add or edit information. - Simultaneous update. WebOSB provides options for users to add, display, and update dynamic information simultaneously at all locations involved in the emergency management effort, A single status board can be updated from multiple locations enabling shelters and hospitals to post bed availability or list decontamination capability. - On-the-fly modification. Allowing the definition of an existing status board to be modified on-the-fly can be an asset during an emergency, where information requirements can change quickly. The status board designer feature allows an administrator to quickly define, modi,, add to, and implement new status boards in minutes without needing the help of Web designers and computer programmers. - Publisher/subscriber notification. As a subscriber, each user automatically receives notification of any new information relating to specific status boards. The publisher/subscriber feature automatically notified each user of any

    17. Industry outreach a status report

      SciTech Connect (OSTI)

      Surek, D.; Sen, R.

      1995-09-01

      The Outreach Project was initiated in October 1994 with the objective of developing a multi-year plan for the U.S. Department of Energy (DOE) for targeted outreach activities for stakeholders in industry and the general public. This status report summarizes the work on industry outreach that has been completed since the inception of the project in October 1994. A three-pronged approach was taken to ascertain issues related to industry outreach. First, there was a review of on-going and past industry outreach activities at DOE and NHA. Next, a series of meetings with industry decision makers was arranged to get a better understanding of industry interests and concerns, and to discuss how DOE and industry could work collaboratively to develop hydrogen energy systems. Third, a workshop is scheduled where representatives from industry, DOE and other federal agencies can identify issues that would enhance partnering between the federal government and industry in the development of hydrogen energy systems. At this tiny, the review of on-going and past activities has been completed. Industry interviews are in progress and a majority of meetings have been held. Analysis of the information gained is in progress. The preliminary analysis of this information indicates that for appropriate near-term demonstration-type projects, the level of interest for collaboration between DOE and industry is high. The data also identifies issues industry is concerned with which impact the commercialization of hydrogen energy systems.

    18. Application for Research Affiliate Associate & Student Status |

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

      Photosynthetic Antenna Research Center Research Affiliate Program / Application for Research Affiliate Associate & Student Status Application for Research Affiliate Associate & Student Status The following application is for associates and students of PARC Research Affiliates to gain official membership in PARC. Membership is open to students and associates working on PARC-related research under a PARC Research Affiliate. Interested applicants should: Complete the brief application

    19. Completion practices in deep sour Tuscaloosa wells

      SciTech Connect (OSTI)

      Huntoon, G.G.

      1984-01-01

      Successful development of the Tuscaloosa trend in Louisiana has required unique completion practices to produce the trend's deep sour formations. Amoco's operations in the Tuscaloosa formation are between 16,000 and 21,000 ft (4877 and 6400 m), and a range of pressure environments, high temperatures, and corrosive elements is encountered. Application of proved completion practices and equipment has resulted in several techniques that enhance the safety, longevity, and production capacity of these wells. The design of deep Tuscaloosa completions is assisted by a series of correlations developed to project bottomhole and surface shut-in tubing pressures, temperature gradients, and flow capacities for deep sour wells. This paper discusses material selection, completion practices, completion fluids, wellhead equipment, packer designs, corrosion-inhibition systems, and safety and monitoring equipment used in the Tuscaloosa trend. The design of a wellhead surface installation used to detect equipment failure, to pump kill fluids, and to circulate corrosion inhibitors is reviewed. A case study illustrates the methods used in completing a Tuscaloosa well with surface pressures exceeding 16,000 psi (110.3 MPa). Deep high-pressure sour-gas wells can be completed safely if all the elements of the environment that will affect the mechanical integrity of the wellbore are considered in the completion designs. The development of higher-strength material capable of withstanding SSC is needed if wells are completed in formations deeper than 22,000 ft (6700 m). Further research is necessary on the use of alloy steels and nonferrous metals for sour service. Effective high-temperature corrosion inhibitors for heavy zinc bromide completion fluids must be developed before these brines can be used in the Tuscaloosa. The testing of new inhibitors for use in highpressure sour-gas completions should be continued.

    20. Automation Status | Department of Energy

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

      Automation Status Automation Status Presented at the NREL Hydrogen and Fuel Cell Manufacturing R&D Workshop in Washington, DC, August 11-12, 2011. Automation Status (1.93 MB) More Documents & Publications PEM Stack Manufacturing: Industry Status 2011 NREL/DOE Hydrogen and Fuel Cell Manufacturing R&D Workshop Report Manufacturing Barriers to High Temperature PEM Commercialization

    1. Department of Energy Completes Demolition of K-33 Building -...

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

      Completes Demolition of K-33 Building - Largest Completed Demo Project in Oak Ridge History Department of Energy Completes Demolition of K-33 Building - Largest Completed Demo Project ...

    2. NNSA Completes Successful Facilities and Infrastructure Recapitalization

      National Nuclear Security Administration (NNSA)

      Program | National Nuclear Security Administration | (NNSA) NNSA Completes Successful Facilities and Infrastructure Recapitalization Program February 20, 2013 WASHINGTON, D.C. - The National Nuclear Security Administration (NNSA) today announced the successful completion of the Facilities and Infrastructure Recapitalization Program (FIRP). FIRP was created to reduce a substantial accumulation of backlogged facility maintenance, repair and demolition projects across NNSA's eight sites. NNSA

    3. Completion processing for data communications instructions

      DOE Patents [OSTI]

      Blocksome, Michael A.; Kumar, Sameer; Parker, Jeffrey J.

      2014-07-01

      Completion processing of data communications instructions in a distributed computing environment with computers coupled for data communications through communications adapters and an active messaging interface (`AMI`), injecting for data communications instructions into slots in an injection FIFO buffer a transfer descriptor, at least some of the instructions specifying callback functions; injecting a completion descriptor for each instruction that specifies a callback function into an injection FIFO buffer slot having a corresponding slot in a pending callback list; listing in the pending callback list callback functions specified by data communications instructions; processing each descriptor in the injection FIFO buffer, setting a bit in a completion bit mask corresponding to the slot in the FIFO where the completion descriptor was injected; and calling by the AMI any callback functions in the pending callback list as indicated by set bits in the completion bit mask.

    4. Completion processing for data communications instructions

      DOE Patents [OSTI]

      Blocksome, Michael A.; Kumar, Sameer; Jeffrey, Parker J.

      2014-06-10

      Completion processing of data communications instructions in a distributed computing environment with computers coupled for data communications through communications adapters and an active messaging interface (`AMI`), injecting for data communications instructions into slots in an injection FIFO buffer a transfer descriptor, at least some of the instructions specifying callback functions; injecting a completion descriptor for each instruction that specifies a callback function into an injection FIFO buffer slot having a corresponding slot in a pending callback list; listing in the pending callback list callback functions specified by data communications instructions; processing each descriptor in the injection FIFO buffer, setting a bit in a completion bit mask corresponding to the slot in the FIFO where the completion descriptor was injected; and calling by the AMI any callback functions in the pending callback list as indicated by set bits in the completion bit mask.

    5. Status of Acquisition Letters

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

      Workers under Service Contracts Jason Taylor Active until rulemaking is complete 6 ... Management and Operating Contracts Jason Taylor Superseded by coverage in the Acquisition ...

    6. A current modulation in the Gd{sub 2}O{sub 3}/Si/Gd{sub 2}O{sub 3} quantum well structure as a mean to monitor oxygen vacancies

      SciTech Connect (OSTI)

      Sitaputra, Wattaka; Hudak, John A.; Tsu, Raphael

      2014-05-15

      The Gd{sub 2}O{sub 3} layer grown by electron beam evaporation system normally leads to oxygen deficient sites unless the oxygen partial pressure is provided. These oxygen vacancies were monitored through their current modulating effect. This modulation controlled the current within a Si well of the Gd{sub 2}O{sub 3}/Si/Gd{sub 2}O{sub 3} quantum well structure through the migration of the oxygen vacancies. Such behavior were not found in the structure that contains far less oxygen vacancy such as SiO{sub 2}/Si/SiO{sub 2} structure.

    7. PCMDI software system: status and future plans report no. 44

      SciTech Connect (OSTI)

      Williams, Dean N.

      1997-08-01

      This report describes the current status and future plans of PCMDI`s software products. A complete description of each product is provided, including the product`s problem statement, purpose, requirements, design diagram, current status, future development, developers, contributors, and off-site collaborators. While it is noted that each software product can be executed as an independent process, it is important to discern that all products work together in the complete PCMDI Software Systems: A suite of software tools facilitating for the storage, diagnosis, and visualization of climate data.

    8. The effect of structural vacancies on the thermoelectric properties of (Cu₂Te){sub 1–x}(Ga₂Te₃)x

      SciTech Connect (OSTI)

      Ye, Zuxin; Young Cho, Jung; Tessema, Misle M.; Salvador, James R.; Waldo, Richard A.; Wang, Hsin; Cai, Wei

      2013-05-01

      We have studied the effects of structural vacancies on the thermoelectric properties of the ternary compounds (Cu₂Te)1–x(Ga₂Te₃)x (x=0.5, 0.55, 0.571, 0.6, 0.625, 0.667 and 0.75), which are solid solutions found in the pseudo-binary phase diagram for Cu₂Te and Ga₂Te₃, and possesses tunable structural vacancy concentrations. This materials system is not suitable due to the cost and scarcity of the constituent elements, but the vacancy behavior is well understood and will provide a valuable test case for other systems more suitable from the standpoint of cost and abundance of raw materials, which also possesses these vacancy features, but whose structural characterization is lacking at this stage. We find that the nominally defect free phase CuGaTe₂ possess the highest ZT (ZT=S²T/ρκ, where S is the Seebeck coefficient and ρ is the electrical resistivity κ is the thermal conductivity and T is the absolute temperature) which approaches 1 at 840 K and seems to continuously increase above this temperature. This result is due to the unexpectedly low thermal conductivity found for this material at high temperature. The low thermal conductivity was caused by strong Umklapp (thermally resistive scattering processes involving three phonons) phonon scattering. We find that due to the coincidentally strong scattering of carriers by the structural defects that higher concentrations of these features lead to poor electrical transport properties and decreased ZT. - Graphical abstract: Thermal conductivity and zT as a function of temperature for a series of compounds of the type (Cu₂Te)1–x(Ga₂Te₃)x (x=0.5, 0.55, 0.571, 0.6, 0.625, 0.667 and 0.75). Highlights: • All the samples show p-type semiconducting behavior in the temperature dependence of the Seebeck and Hall coefficients. • The increased carrier concentration and the introduction of vacancies diminish the carrier mobility and power factor. • The low

    9. FRIB Cryogenic Plant Status

      SciTech Connect (OSTI)

      Dixon, Kelly D.; Ganni, Venkatarao; Knudsen, Peter N.; Casagranda, Fabio

      2015-12-01

      After practical changes were approved to the initial conceptual design of the cryogenic system for MSU FRIB and an agreement was made with JLab in 2012 to lead the design effort of the cryogenic plant, many activities are in place leading toward a cool-down of the linacs prior to 2018. This is mostly due to using similar equipment used at CHLII for the 12 GeV upgrade at JLab and an aggressive schedule maintained by the MSU Conventional Facilities department. Reported here is an updated status of the cryogenic plant, including the equipment procurement status, plant layout, facility equipment and project schedule.

    10. Property:CompletionNotes | Open Energy Information

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

      eset-345kv-transmission-line-project-north B BLM-NV-WN-ES-08-01-1310, NV-020-08-01 + 82: Data reviewed for completion Barren Ridge Renewable Transmission + LADWP Project Website:...

    11. Definition of Environmental Management (EM) Completion

      Office of Environmental Management (EM)

      ects is the point at which a project may proceed to Completion. Highlight 1 - Exit Strategies An exit strategy comprises the set of information that will be used to demonstrate...

    12. Definition of Environmental Management (EM) Completion

      Energy.gov [DOE]

      The purpose of this memorandum is to provide you with additional clarification on: 1) the specific activities that must be accomplished before an environmental cleanup project is complete; and 2)...

    13. EM's Paducah Site Completes Building Removals | Department of Energy

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

      EM's Paducah Site Completes Building Removals EM's Paducah Site Completes Building Removals Addthis

    14. Glueballs: a status report

      SciTech Connect (OSTI)

      Scharre, D.L.

      1982-01-01

      It is expected from quantum chromodynamics (QCD) that glueballs, bound states which contain gluons but no valence quarks, should exist. To date, no conclusive evidence for glueballs has been presented. After a brief review of the expected properties and experimental signatures of glueballs the status of some glueball candidate states are discussed.

    15. Hanford Site Cleanup Completion Framework - Hanford Site

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

      Documents Hanford Site Cleanup Completion Framework Documents Documents Hanford Site Cleanup Completion Framework Tri-Party Agreement Freedom of Information and Privacy Act Hanford Site Budget Hanford Site Safety Standards DOE - ORP Contracts/Procurements DOE - RL Contracts/Procurements Integrated Waste Feed Delivery Plan Single-Shell Tank Evaluations Deep Vadose Zone 100-F RI/FS 100-D/H Operable Units RI/FS Sitewide Probabilistic Seismic Hazard Analysis Environmental Hanford Site Cleanup

    16. Lab completes record year for environmental cleanup

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

      Record year for environmental cleanup Lab completes record year for environmental cleanup Personnel conducted more field investigations and cleanup campaigns than ever and completed a record number of Lab shipments to WIPP. December 16, 2010 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 physics and new

    17. First trillion particle cosmological simulation completed

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

      First trillion particle cosmological simulation completed First trillion particle cosmological simulation completed A team of astrophysicists and computer scientists has created high-resolution cyber images of our cosmos. January 8, 2015 Simulation of the cosmic web of the dark matter mass distribution. This region represents about 1/10,000 of the total simulation volume. Simulation of the cosmic web of the dark matter mass distribution. This region represents about 1/10,000 of the total

    18. JLab Completes 100th Experiment | Jefferson Lab

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

      Completes 100th Experiment JLab Completes 100th Experiment The experiment, titled "Quark Propagation through Cold QCD Matter," began its run in December 2003 and wrapped up in early March. It probed Quantum Chromodynamics (QCD), a fundamental theory of particle physics that describes the interactions of quarks and gluons - the basic building blocks of matter. A property of QCD, called confinement, states that no quark can ever be found alone. Instead, quarks combine in pairs or

    19. LANL completes CRADA with Biomagnetics, Inc.

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

      CRADA with Biomagnetics, Inc. completed LANL completes CRADA with Biomagnetics, Inc. The CRADA was created to continue work on developing a commercial product that could detect a specific biomarker in urine that could aid in the diagnosis of tuberculosis infection. September 23, 2011 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

    20. Lab completes Recovery Act-funded demolition

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

      Recovery Act-funded demolition completed Lab completes Recovery Act-funded demolition The building was the largest of the 24 demolished at LANL's historic Technical Area 21. January 19, 2011 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 physics and new materials. Los Alamos National Laboratory sits on top of

    1. CWI Completes Pit 9 Waste Exhumation

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

      CWI Completes Pit 9 Waste Exhumation Cleanup crews with CH2M-WG Idaho (CWI), the main cleanup contractor at the Department of Energy's Idaho Site, have completed targeted waste removal from Pit 9 several months ahead of schedule and millions of dollars under budget. About $12 million in American Recovery and Reinvestment Act savings from other cleanup projects, in addition to about $22 million in dedicated funds, were used to finance the Pit 9 project. A specially modified waste excavator was

    2. Oxygen vacancy-driven evolution of structural and electrical properties in SrFeO3₋δ thin films and a method of stabilization

      DOE PAGES-Beta [OSTI]

      Enriquez, Erik M.; Chen, Aiping; Harrell, Zachary John; Lu, Xujie; Dowden, Paul Charles; Koskelo, Nicholas Aaron; Janoschek, Marc; Chen, Chonglin; Jia, Quanxi

      2016-10-06

      Epitaxial SrFeO3-δ (SFO) thin films have been grown on various substrates by pulsed laser deposition. The structural and electrical properties of SFO thin films are monitored with time in different atmospheres at room temperature, showing time-dependent crystal structure and electrical conductivity. The increased out-of-plane lattice parameter and resistivity over time are associated with the increased oxygen vacancies density in SFO thin films. The epitaxial strain plays an important role in determining the initial resistivity, and the sample environment determines the trend of resistivity change over time. An amorphous Al2O3 passivation layer has been found to be effective in stabilizing themore » structure and electrical properties of SFO thin films. Lastly, this work explores time dependent structure and properties variation in oxide films and provides a way to stabilize thin film materials that are sensitive to oxygen vacancies.« less

    3. Subsea completion data show steady activity levels

      SciTech Connect (OSTI)

      Mohr, H.O. )

      1993-02-01

      Review of subsea completion statistics indicates 45 installations during 1992 - one more than during 1991. The 45 installations are still considerably less than the all-time high of 66 installations in 1985. Petrobras continues to install three times as many subsea completions as Shell, the next most active user. However, as in the past three years, the overall-lower number of installations last year was due to reduced applications by Petrobras. During 1991, that company installed 10 subsea completions, whereas during 1988, for example, it completed 37 installations. It should be noted that reduced activity by petrobras reflects problems with financing and general activity, rather than a lack of confidence in subsea completions. The number of future subsea completions identified for installation during the next 10 years is 1,144 - some 10% more than the 1,014 identified at the end of 1991. The present planned installation figure is an all-time high; the next highest number of installations identified was 1,083 at the end of 1989. These and other statistics are presented in 10 tables. A brief analysis of each is included.

    4. Structural phases driven by oxygen vacancies at the La{sub 0.7}Sr{sub 0.3}MnO{sub 3}/SrTiO{sub 3} hetero-interface

      SciTech Connect (OSTI)

      Nord, M.; Holmestad, R.; Vullum, P. E.; Moreau, M.; Boschker, J. E.; Tybell, T.; Selbach, S. M.

      2015-01-26

      An oxygen vacancy driven structural response at the epitaxial interface between La{sub 0.7}Sr{sub 0.3}MnO{sub 3} films and SrTiO{sub 3} substrates is reported. A combined scanning transmission electron microscopy and electron energy loss spectroscopy study reveal the presence of an elongated out-of-plane lattice parameter, coupled to oxygen vacancies and reduced manganese oxidation state at the La{sub 0.7}Sr{sub 0.3}MnO{sub 3} side of the interface. Density functional theory calculations support that the measured interface structure is a disordered oxygen deficient brownmillerite structure. The effect of oxygen vacancy mobility is assessed, revealing an ordering of the vacancies with time.

    5. Effects of oxygen vacancies on dielectric, electrical, and ferroelectric properties of Ba{sub 4}Nd{sub 2}Fe{sub 2}Nb{sub 8}O{sub 30} ceramics

      SciTech Connect (OSTI)

      Fei Liu, Shu; Jun Wu, Yong; Li, Juan; Ming Chen, Xiang

      2014-02-24

      Effects of oxygen vacancies on the dielectric, electrical, and ferroelectric properties of Ba{sub 4}Nd{sub 2}Fe{sub 2}Nb{sub 8}O{sub 30} ceramics were investigated. A dielectric relaxation above T{sub c} can be ascribed to the trap-controlled ac conduction around doubly ionized oxygen vacancies. The dc conductivity of the N{sub 2}-annealed and O{sub 2}-annealed samples is attributed to the long-range motion of the V{sub o}{sup ??}, and that of the as-sintered sample is considered to be governed by the electronic and oxygen-vacancy ionic mixed conduction mechanism. Low concentration and random distributed oxygen vacancies are propitious to the domain switching, while high concentration and allied oxygen defects hinder the domain-wall movement.

    6. Effect of oxygen vacancy on half metallicity in Ni-doped CeO{sub 2} diluted magnetic semiconductor

      SciTech Connect (OSTI)

      Saini, Hardev S. Saini, G. S. S.; Singh, Mukhtiyar; Kashyap, Manish K.

      2015-05-15

      The electronic and magnetic properties of Ni-doped CeO{sub 2} diluted amgentic semiconductor (DMS) including the effect of oxygen vacancy (V{sub o}) with doping concentration, x = 0.125 have been calculated using FPLAPW method based on Density Functional Theory (DFT) as implemented in WIEN2k. In the present supercell approach, the XC potential was constructed using GGA+U formalism in which Coulomb correction is applied to standard GGA functional within the parameterization of Perdew-Burke-Ernzerhof (PBE). We have found that the ground state properties of bulk CeO{sub 2} compound have been modified significantly due to the substitution of Ni-dopant at the cation (Ce) site with/without V{sub O} and realized that the ferromagnetism in CeO{sub 2} remarkably depends on the V{sub o} concentrations. The presence of V{sub o}, in Ni-doped CeO{sub 2}, can leads to strong ferromagnetic coupling between the nearest neighboring Ni-ions and induces a HMF in this compound. Such ferromagnetic exchange coupling is mainly attributed to spin splitting of Ni-d states, via electrons trapped in V{sub o}. The HMF characteristics of Ni-doped CeO{sub 2} including V{sub o} makes it an ideal material for spintronic devices.

    7. Zinc vacancy and erbium cluster jointly promote ferromagnetism in erbium-doped ZnO thin film

      SciTech Connect (OSTI)

      Chen, Hong-Ming; Zhou, Ren-Wei; Li, Fei; University of Chinese Academy of Sciences, Beijing 100049 ; Liu, Xue-Chao Zhuo, Shi-Yi; Shi, Er-Wei; Xiong, Ze

      2014-04-15

      Zn{sub 1-x}Er{sub x}O (0.005 ? x ? 0.04) thin films have been prepared by inductively coupled plasma enhanced physical vapor deposition method. Ferromagnetism, crystal structure, microstructure and photoluminescence properties of the films were characterized. It is found that the chemical valence state of Er is trivalent, and the Er{sup 3+} cations play an important role in ferromagnetism. Both saturated magnetization (M{sub s}) and zinc vacancy (V{sub Zn}) are decreased with the increase of x from 0.005 to 0.03. However, further increasing x to 0.04, the M{sub s} is quenched due to the generation of Er clusters. It reveals that the intensity of M{sub s} is not only associated with the V{sub Zn} concentration, but also related to the Er clusters. The V{sub Zn} concentration and the Er clusters can jointly boost the ferromagnetism in the Zn{sub 1-x}Er{sub x}O thin films.

    8. High tunability of the work function of (001) surface of ReO{sub 3} with O-vacancies: First principles analysis

      SciTech Connect (OSTI)

      Suchitra; Pan, Jaysree; Waghmare, Umesh V.

      2014-07-21

      Physical and chemical properties of transition metal oxides are central to the emerging field of oxide electronics. However, they are greatly influenced by defects, particularly, oxygen vacancies, which are always present in oxides. Here, we show how the control of oxygen vacancies at (001) surface of ReO{sub 3} can be used to tune its work function from 7 to 3?eV, based on first-principles density functional theoretical calculations of its structure, electronic and magnetic properties. The work function is shown to correlate directly with the stability of surface and exhibit a linear dependence on surface energy. We further assess the stability of ReO{sub 3} surface by determining its phonon dispersion, and explain how the surface stresses effectively strengthen structural instability leading to size dependence of its pressure dependent structural phase transitions observed experimentally. Our results highlight how significantly oxygen vacancies alter the work function of a metallic oxide and has important consequences to development of electronic devices and catalysts based on oxide heterostructures.

    9. Impact of residual carbon impurities and gallium vacancies on trapping effects in AlGaN/GaN metal insulator semiconductor high electron mobility transistors

      SciTech Connect (OSTI)

      Huber, Martin; Silvestri, Marco; Knuuttila, Lauri; Pozzovivo, Gianmauro; Andreev, Andrei; Lundskog, Anders; Kadashchuk, Andrey; Bonanni, Alberta

      2015-07-20

      Effects of residual C impurities and Ga vacancies on the dynamic instabilities of AlN/AlGaN/GaN metal insulator semiconductor high electron mobility transistors are investigated. Secondary ion mass spectroscopy, positron annihilation spectroscopy, and steady state and time-resolved photoluminescence (PL) measurements have been performed in conjunction with electrical characterization and current transient analyses. The correlation between yellow luminescence (YL), C- and Ga vacancy concentrations is investigated. Time-resolved PL indicating the C{sub N} O{sub N} complex as the main source of the YL, while Ga vacancies or related complexes with C seem not to play a major role. The device dynamic performance is found to be significantly dependent on the C concentration close to the channel of the transistor. Additionally, the magnitude of the YL is found to be in agreement with the threshold voltage shift and with the on-resistance degradation. Trap analysis of the GaN buffer shows an apparent activation energy of ∼0.8 eV for all samples, pointing to a common dominating trapping process and that the growth parameters affect solely the density of trap centres. It is inferred that the trapping process is likely to be directly related to C based defects.

    10. Direct In-situ TEM Observation Of Modification Of Oxidation By The Injected Vacancies For Ni-4Al Alloy Using A Microfabricated Nanopost

      SciTech Connect (OSTI)

      Wang, Chong M.; Schreiber, Daniel K.; Olszta, Matthew J.; Baer, Donald R.; Bruemmer, Stephen M.

      2015-07-17

      Vacancy injection and selective oxidation of one specie in bimetallic alloy at high temperature is a well-known phenomenon. However, detailed understanding of the behavior of the injected vacancies and consequently their behavior and effect on oxidation remains elusive. The current research examines the oxidation of high-purity Ni doped with 4.1 at% Al using in-situ transmission electron microscopy (TEM). Experiments are performed on nanoposts fabricated from solution-annealed bulk material that are essentially single crystal samples. Initial oxidation is observed to occur by multi-site oxide nucleation, formation of an oxide shell followed by cavity nucleation and growth at the metal/oxide interface. One of the most interesting in-situ TEM observations is the formation of a cavity that leads to the faceting of the metal on (111) surface and subsequent oxidation occurring by an atomic ledge migration mechanism on the faceted metal surface. Further, it is directly observed that metal atoms diffuse through the oxide layer to combine with oxygen at the outer surface of the oxide. The present work indicates that injection of vacancies and formation of cavity will lead to a situation where the oxidation rate is essentially controlled by the low surface energy plane of the metal, rather than by the initial terminating plane at the metal surface exposed to the oxidizing environment.

    11. Long Range Ferromagnetic Order in LaCoO3-δ epitaxial films due to the interplay of epitaxial strain and oxygen vacancy ordering

      SciTech Connect (OSTI)

      Mehta, Virat; Biskup, Nevenko; Arenholz, E; Varela del Arco, Maria; Suzuki, Yuri

      2015-04-23

      We demonstrate that a combination of electronic structure modification and oxygen vacancy ordering can stabilize a long-range ferromagnetic ground state in epitaxial LaCoO3 thin films. Highest saturation magnetization values are found in the thin films in tension on SrTiO3 and (La,Sr)(Al,Ta)O3 substrates and the lowest values are found in thin films in compression on LaAlO3. Electron microscopy reveals oxygen vacancy ordering to varying degrees in all samples, although samples with the highest magnetization are the most defective. Element-specific x-ray absorption techniques reveal the presence of high spin Co2+ and Co3+ as well as low spin Co3+ in different proportions depending on the strain state. The interactions among the high spin Co ions and the oxygen vacancy superstructure are correlated with the stabilization of the long-range ferromagnetic order.

    12. ARM - Status and Actions

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

      underpass, while the G-1 is planning on an additional test flight to address some minor problems with one of the inlets. ... We're still trying to complete our roster of emergency ...

    13. LAMPF: proposal status and summaries

      SciTech Connect (OSTI)

      Rayburn, L.; Talley, B.

      1982-03-01

      Revisions and additions are given for LAMPF proposal summaries and status reports. These apply to LA-7444-MS. (GHT)

    14. Completion processing for data communications instructions

      DOE Patents [OSTI]

      Blocksome, Michael A; Kumar, Sameer; Parker, Jeffrey J

      2014-05-20

      Completion processing of data communications instructions in a distributed computing environment, including receiving, in an active messaging interface (`AMI`) data communications instructions, at least one instruction specifying a callback function; injecting into an injection FIFO buffer of a data communication adapter, an injection descriptor, each slot in the injection FIFO buffer having a corresponding slot in a pending callback list; listing in the pending callback list any callback function specified by an instruction, incrementing a pending callback counter for each listed callback function; transferring payload data as per each injection descriptor, incrementing a transfer counter upon completion of each transfer; determining from counter values whether the pending callback list presently includes callback functions whose data transfers have been completed; calling by the AMI any such callback functions from the pending callback list, decrementing the pending callback counter for each callback function called.

    15. Completion processing for data communications instructions

      DOE Patents [OSTI]

      Blocksome, Michael A.; Kumar, Sameer; Parker, Jeffrey J.

      2014-06-03

      Completion processing of data communications instructions in a distributed computing environment, including receiving, in an active messaging interface (`AMI`) data communications instructions, at least one instruction specifying a callback function; injecting into an injection FIFO buffer of a data communication adapter, an injection descriptor, each slot in the injection FIFO buffer having a corresponding slot in a pending callback list; listing in the pending callback list any callback function specified by an instruction, incrementing a pending callback counter for each listed callback function; transferring payload data as per each injection descriptor, incrementing a transfer counter upon completion of each transfer; determining from counter values whether the pending callback list presently includes callback functions whose data transfers have been completed; calling by the AMI any such callback functions from the pending callback list, decrementing the pending callback counter for each callback function called.

    16. Snorre subsea completions advance TFL technology

      SciTech Connect (OSTI)

      Gunnarsson, B.; Tonnessen, S.H. )

      1992-12-01

      Well-service operations on subsea completions at Saga Petroleum's Snorre field performed by TFL (through-flowline) methods. These operations will be carried out by an innovative system that advances the state-of-the-art for TFL technology. The initial field development phase for Snorre includes 10 subsea wells mounted no a large template known as the Subsea Production System, or SPS. The 2 [times] 10 well slot arrangement on the SPS allows additional wells to be drilled as needed to replace the original ten. The template is located 6,500 m (21,320 ft) from the Snorre TLP and is connected to it by two 8-in. production lines, one 8-in. water injection line and two 3-in.-ID TFL service lines. The wells will be completed with dual 3 1/2-in. Tubing strings for TFL service operations. This article will overview the Snorre TFL system and discuss completion design.

    17. Subsea completions: A record year in '93

      SciTech Connect (OSTI)

      Mohr, H.O. )

      1994-02-01

      Review of subsea completion statistics for 1993 shows 78 installations--an 18% increase over the previous all-time high of 66 installations during 1985. Risking some dramatics, the 78 installations during '93 represent a 73% increase over the 45 installations during '92. And enthusiasm and positive outlook for continued application of subsea completions is clearly indicated in all major areas of the offshore world. Data suggest that the activity should continue to rise strongly toward the year 2000. At the end of 1993, the number of future subsea completions identified for installation during the next 10 years is 1,315--up 15% from the 1,144 identified at year-end 1992. The next highest number identified was 1,083 at the end of 1989, supporting a positive trend.

    18. Status of MARS Code

      SciTech Connect (OSTI)

      N.V. Mokhov

      2003-04-09

      Status and recent developments of the MARS 14 Monte Carlo code system for simulation of hadronic and electromagnetic cascades in shielding, accelerator and detector components in the energy range from a fraction of an electronvolt up to 100 TeV are described. these include physics models both in strong and electromagnetic interaction sectors, variance reduction techniques, residual dose, geometry, tracking, histograming. MAD-MARS Beam Line Build and Graphical-User Interface.

    19. Electronic Status Board

      Energy Science and Technology Software Center (OSTI)

      2004-06-02

      This software was developed to post real-time process status and building conditions to operators, system engineers, system managers, and all support personnel. Data input is via operator console, strategically located throughout the facility, or by electronic rounds tablet. The system requires a person to log in with a unique user id and password to edit data. Viewing system status does not require log in and can be done from any desktop location running FileMaker. Oncemore » logged into the system, all new records saved are stamped with date, time and user name, and a historical copy is created that can be brought up to review status. There is no limitation to the amount of records that can be saved in the historical databases. The system will flag all out of limit conditions on the screen and enter that record on a turnover summery page which displays only flagged items. System conditions are displayed on a plasma display which scrolls through the various system condition screens. The system also shows floor plans that reflect specific building radiological conditions which aides in pre job briefings to show all hazards to personnel entering specific locations. The input screen is displayed on a second standard computer monitor connected to the input PC. There are several popup screens that require user intervention to ensure that the user wants to edit the data, is editing the appropriate sytem, and if they want to continue to stay logged into the system. Each workstation is connected to a Uninterrupted Power Supply which will shut each system down safely in a power failure. The server is configured to print out current status upon notification from the UPS that power has failed. The system also has a video input card which is connected to a DVD/VCR which shows safety meetings, and images taken from a digital camera used to show specific locations/items for pre-job briefings.« less

    20. Weekly Petroleum Status Report

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

      6 Appendix C Northeast Reserves Reserves inventories are not considered to be in the commercial sector and are excluded from EIA's commercial motor gasoline and distillate fuel oil supply and disposition statistics, such as those reported in the Weekly Petroleum Status Report, Petroleum Supply Monthly, and This Week In Petroleum. Northeast Home Heating Oil Reserve classifed as ultra-low sulfur distillate (15 parts per million) Terminal Operator Location Thousand Barrels Buckeye Partners LP Port

    1. Small Business Status

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

      Teaming Arrangements on Small Business Status The Department of Energy is planning to set aside for small businesses a number of acquisitions of a very complex nature, requiring a myriad of capabilities on the part of offerors, which might result in teaming arrangements or joint ventures being formed. Given this, the Department believes that potential offerors should be aware of the Small Business Administration's regulations regarding affiliation. As such, DOE will include the following

    2. FASTBUS software status

      SciTech Connect (OSTI)

      Gustavson, D.B.

      1980-10-01

      Computer software will be needed in addition to the mechanical, electrical, protocol and timing specifications of the FASTBUS, in order to facilitate the use of this flexible new multiprocessor and multisegment data acquisition and processing system. Software considerations have been important in the FASTBUS design, but standard subroutines and recommended algorithms will be needed as the FASTBUS comes into use. This paper summarizes current FASTBUS software projects, goals and status.

    3. MARS Flight Engineering Status

      SciTech Connect (OSTI)

      Fast, James E.; Dorow, Kevin E.; Morris, Scott J.; Thompson, Robert C.; Willett, Jesse A.

      2010-04-06

      The Multi-sensor Airborne Radiation Survey Flight Engineering project (MARS FE) has designed a high purity germanium (HPGe) crystal array for conducting a wide range of field measurements. In addition to the HPGe detector system, a platform-specific shock and vibration isolation system and environmental housing have been designed to support demonstration activities in a maritime environment on an Unmanned Surface Vehicle (USV). This report describes the status of the equipment as of the end of FY09.

    4. DFC Technology Status

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

      Pinakin Patel Mohammad Farooque FuelCell Energy, Inc. 3 Great Pasture Road Danbury, Ct 06813 DFC Technology Status * Distributed generation puts power where it's needed * Increases power reliability * Near zero emissions allow units to be sited almost anywhere - even polluted urban areas * Reduces need for central generation plants * Reduces grid congestion and need for new transmission lines * Distributed generation enables smart grid * Balances the grid with 24/7 power * Meets requirements for

    5. SuperNEMO status

      SciTech Connect (OSTI)

      Chapon, A. [Universite de Caen Basse-Normandie, ENSICAEN, LPC Caen, UMR 6534, 6 boulevard du Marechal Juin, 14050 CAEN Cedex (France); Collaboration: SUPERNEMO Collaboration

      2011-12-16

      The SuperNEMO experiment aims to reach a sensitivity up to 10{sup 26} years on the half-life of neutrinoless double beta decay. The SuperNEMO project strongly inherits from the previous Nemo3 experiment. It will consist of a ''tracko-calo'' modular detector with at least 100 kg of betabeta isotope. The current status of the main R and D tasks will be presented: enrichment and production of source foils, radiopurity control, tracker and calorimeter.

    6. ESnet Planning, Status,

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

      ESnet Planning, Status, and Future Issues William E. Johnston, ESnet Department Head and Senior Scientist Joe Burrescia, General Manager Mike Collins, Chin Guok, and Eli Dart, Engineering Brian Tierney, Advanced Development Jim Gagliardi, Operations and Deployment Stan Kluz, Infrastructure and ECS Mike Helm, Federated Trust Dan Peterson, Security Officer Gizella Kapus, Business Manager and the rest of the ESnet Team wej@es.net, this talk is available at www.es.net Energy Sciences Network

    7. Interim Ventilation System Tie-in Completed

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

      , 2016 Interim Ventilation System Tie-in Completed Early this week sub-contractors at the Waste Isolation Pilot Plant (WIPP) completed the "tie in" of the new interim ventilation system (IVS) to the ductwork for the existing underground ventilation system. Following a series of operational tests, the IVS is expected to increase airflow in the WIPP underground by approximately 54,000 cubic feet per minute. The tie-in operation consisted of removal of sections of the existing ductwork

    8. DOE Completes Five Recovery Act Projects

      Energy.gov [DOE]

      DOE's EM program recently completed five projects at the Oak Ridge site funded through the Recovery Act. The projects included the expansion of two landfills at the Oak Ridge Reservation (ORR) and pre-demolition and demolition projects at ETTP and Y-12.

    9. Method and apparatus for multiple well completion

      SciTech Connect (OSTI)

      Lawson, J.E.

      1982-06-08

      Method and apparatus for multiple well completion, in which a multiple string tubing hanger or like component is equipped with a gapped flange to accept dependent splines on the handling tool and on the production upper body to establish precise orientation of the production upper body.

    10. STIMULATION TECHNOLOGIES FOR DEEP WELL COMPLETIONS

      SciTech Connect (OSTI)

      Stephen Wolhart

      2003-06-01

      The Department of Energy (DOE) is sponsoring a Deep Trek Program targeted at improving the economics of drilling and completing deep gas wells. Under the DOE program, Pinnacle Technologies is conducting a project to evaluate the stimulation of deep wells. The objective of the project is to assess U.S. deep well drilling & stimulation activity, review rock mechanics & fracture growth in deep, high pressure/temperature wells and evaluate stimulation technology in several key deep plays. Phase 1 was recently completed and consisted of assessing deep gas well drilling activity (1995-2007) and an industry survey on deep gas well stimulation practices by region. Of the 29,000 oil, gas and dry holes drilled in 2002, about 300 were drilled in the deep well; 25% were dry, 50% were high temperature/high pressure completions and 25% were simply deep completions. South Texas has about 30% of these wells, Oklahoma 20%, Gulf of Mexico Shelf 15% and the Gulf Coast about 15%. The Rockies represent only 2% of deep drilling. Of the 60 operators who drill deep and HTHP wells, the top 20 drill almost 80% of the wells. Six operators drill half the U.S. deep wells. Deep drilling peaked at 425 wells in 1998 and fell to 250 in 1999. Drilling is expected to rise through 2004 after which drilling should cycle down as overall drilling declines.

    11. DOE Completes TRU Waste Cleanup at Bettis

      Energy.gov [DOE]

      CARLSBAD, N.M.– The U.S. Department of Energy (DOE) has successfully completed cleanup of all Cold War legacy transuranic (TRU) waste at the Bettis Atomic Power Laboratory (BAPL) near Pittsburgh, Pa., permanently disposing of it at the Waste Isolation Pilot Plant (WIPP).

    12. U.S. And Russia Complete Nuclear Security Upgrades Under Bratislava

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

      Initiative | Department of Energy And Russia Complete Nuclear Security Upgrades Under Bratislava Initiative U.S. And Russia Complete Nuclear Security Upgrades Under Bratislava Initiative December 23, 2008 - 9:18am Addthis WASHINGTON, DC -The U.S. Department of Energy today delivered the Bratislava Nuclear Security report to the White House, which detailed the status of work agreed to by Presidents Bush and Putin in Bratislava in 2005. U.S. and Russian officials from the U.S. Department of

    13. Current status of APEX

      SciTech Connect (OSTI)

      Betts, R.R.

      1993-10-01

      The ATLAS Positron Experiment (APEX) is designed to investigate narrow structures observed in the energy spectra of positions and positron-electron coincidences produced in collisions of high Z ions with high Z targets at Coulomb barrier energies. The apparatus consists of a large diameter uniform-field solenoid mounted transverse to the beam direction. Scattered heavy ions are detected in a gas-counter array. Electrons and positrons transversing the solenoid are detected in highly segmented silicon arrays surrounded by position sensitive NaI detectors for positron identification. The concept of APEX and the current status of the apparatus will be discussed.

    14. Weekly Petroleum Status Report

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

      ‹ See All Petrolem Reports Weekly Petroleum Status Report Data for week ending Nov. 11, 2016 | Release Date: Nov. 16, 2016 | Next Release Date: Nov. 23, 2016 | full report Previous Issues Week: November 16, 2016 November 9, 2016 November 2, 2016 October 26, 2016 October 19, 2016 October 13, 2016 October 5, 2016 September 28, 2016 September 21, 2016 September 14, 2016 September 8, 2016 August 31, 2016 August 24, 2016 August 17, 2016 August 10, 2016 August 3, 2016 prior issues Go The petroleum

    15. National Hydrogen Learning Demonstration Status | Department...

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

      Learning Demonstration Status National Hydrogen Learning Demonstration Status Download presentation slides from the Fuel Cell Technologies Program webinar "National Hydrogen ...

    16. Complete genome sequences for the anaerobic, extremely thermophilic...

      Office of Scientific and Technical Information (OSTI)

      Complete genome sequences for the anaerobic, extremely thermophilic plant ... Title: Complete genome sequences for the anaerobic, extremely thermophilic plant ...

    17. PSA_Well_Completion_Report.book

      Office of Legacy Management (LM)

      Restoration Project U.S. Department of Energy National Nuclear Security Administration Nevada Site Office Environmental Restoration Project U.S. Department of Energy National Nuclear Security Administration Nevada Site Office Nevada Environmental Restoration Project Well Completion Report for Corrective Action Unit 447, Project Shoal Area Churchill County, Nevada Revision No.: 0 September 2006 Approved for public release; further dissemination unlimited. DOE/NV--1166 Available for public sale,

    18. Deepwater completion and tieback -- A case study

      SciTech Connect (OSTI)

      Ghiselin, D.

      1996-10-01

      Major operators are engaged in large-scale integrated projects around the world. Does integration favor the big boys, or can a small independent operator benefit from this approach? Independent partners Hardy Oil and Gas USA and Samedan Oil Corp. looked into integrated project management to successfully design and install subsea completions, subsea pipelines, and platform tiebacks and interfaces to two platforms operated by Texaco and Chevron, respectively. The paper describes the project management approach taken and results of the project.

    19. NGNP Engineering Status

      SciTech Connect (OSTI)

      John Collins

      2010-08-01

      The objectives of Phase 1 Engineering and Design scope are to: 1) complete the initial design activities for a prototype nuclear reactor and plant that is capable of co-generating electricity, hydrogen, and process heat; 2) identify technological aspects of the NGNP that need further advancement by research and development activities; and 3) provide engineering support to the early licensing process, including technical input to white papers and developing the basis for future safety analyses.

    20. One Bacterial Cell, One Complete Genome

      SciTech Connect (OSTI)

      Woyke, Tanja; Tighe, Damon; Mavrommatis, Konstantinos; Clum, Alicia; Copeland, Alex; Schackwitz, Wendy; Lapidus, Alla; Wu, Dongying; McCutcheon, John P.; McDonald, Bradon R.; Moran, Nancy A.; Bristow, James; Cheng, Jan-Fang

      2010-04-26

      While the bulk of the finished microbial genomes sequenced to date are derived from cultured bacterial and archaeal representatives, the vast majority of microorganisms elude current culturing attempts, severely limiting the ability to recover complete or even partial genomes from these environmental species. Single cell genomics is a novel culture-independent approach, which enables access to the genetic material of an individual cell. No single cell genome has to our knowledge been closed and finished to date. Here we report the completed genome from an uncultured single cell of Candidatus Sulcia muelleri DMIN. Digital PCR on single symbiont cells isolated from the bacteriome of the green sharpshooter Draeculacephala minerva bacteriome allowed us to assess that this bacteria is polyploid with genome copies ranging from approximately 200?900 per cell, making it a most suitable target for single cell finishing efforts. For single cell shotgun sequencing, an individual Sulcia cell was isolated and whole genome amplified by multiple displacement amplification (MDA). Sanger-based finishing methods allowed us to close the genome. To verify the correctness of our single cell genome and exclude MDA-derived artifacts, we independently shotgun sequenced and assembled the Sulcia genome from pooled bacteriomes using a metagenomic approach, yielding a nearly identical genome. Four variations we detected appear to be genuine biological differences between the two samples. Comparison of the single cell genome with bacteriome metagenomic sequence data detected two single nucleotide polymorphisms (SNPs), indicating extremely low genetic diversity within a Sulcia population. This study demonstrates the power of single cell genomics to generate a complete, high quality, non-composite reference genome within an environmental sample, which can be used for population genetic analyzes.

    1. Stimulation Technologies for Deep Well Completions

      SciTech Connect (OSTI)

      Stephen Wolhart

      2005-06-30

      The Department of Energy (DOE) is sponsoring the Deep Trek Program targeted at improving the economics of drilling and completing deep gas wells. Under the DOE program, Pinnacle Technologies conducted a study to evaluate the stimulation of deep wells. The objective of the project was to review U.S. deep well drilling and stimulation activity, review rock mechanics and fracture growth in deep, high-pressure/temperature wells and evaluate stimulation technology in several key deep plays. This report documents results from this project.

    2. JEA successfully completes world's largest CFB demonstration

      SciTech Connect (OSTI)

      2005-09-30

      JEA (formerly the Jacksonville Electric Authority) has successfully completed an eighth year landmark demonstration project that continues in baseload commercial operation. It scales up atmospheric fluidized-bed technology demonstration to the near-300-MW size, providing important data on a technology that can achieve > 90% SO{sub 2} removal and 60% NOx reduction at relatively high efficiencies and at costs comparable to those of conventional pulverized coal plants. The article recounts the history of the project. Performance tests showed a blend of coal and petcoke were most efficient as a feedstock. 3 figs.

    3. Diamond Shamrock nears completion of major expansions

      SciTech Connect (OSTI)

      True, W.R.

      1993-05-24

      With completion later this year of a second refined products line into Colorado, Diamond Shamrock Inc., San Antonio, will have added more than 600 miles of product and crude-oil pipeline on its system and expanded charge and production capacities at its two state-of-the-art refineries, all within 30 months. The projects aim at improving the company's ability to serve markets in the U.S. Southwest and increasing capacities and flexibility at its two refineries. The paper describes these projects under the following headings: new products service; another new line; and refineries, crude pipelines; Three Rivers expansion and Supplies for McKee.

    4. Snorre subsea completions advance TFL technology

      SciTech Connect (OSTI)

      Gunnarsson, B.; Tennessen, S.H. )

      1993-01-01

      This paper reports on 1 of this two-part series overviewed downhole through-flowline (TFL) equipment used with an eccentric Y-block configuration to allow circulation through dual 3 1/2-in. Tubing strings. The subsea completions are in wells located on Saga Petroleum's Subsea Production System template, 6,500 m (21,320 ft) from the Snorre field TLP. This concluding presentation describes the systems control center based on the TLP, from which the remote TFL operations will be conducted. How the system was tested and commissioned before installation is discussed. And basic concepts of Saga's plans for a TFL-operated production logging system are illustrated.

    5. Instructions For Completing Certified Payroll Report Form

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

      Wage and Hour Division (WHD) Instructions For Completing Payroll Form, WH-347 * OMB Control No. 1235-0008, Expires 02/28/2018. General: Form WH-347has been made available for the convenience of contractors and subcontractors required by their Federal or Federally-aided construction-type contracts and subcontracts to submit weekly payrolls. Properly filled out, this form will satisfy the requirements of Regulations, Parts 3 and 5 (29 C.F.R., Subtitle A), as to payrolls submitted in connection

    6. Status and Future of TRANSCOM

      Office of Environmental Management (EM)

      Program status g Upcoming Changes Glimpse at future options Versatility Signal relay S t d t Smart-mode system DOE Commitments 14 632010 8 Flexible...

    7. SSRL Light Source Status

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

      Beam Current: 498.24 mA Beam Status: Beams (ACR) Loss Rate: 1.12 mA/min SPEAR Plot SPEAR Operator Messages No operator message. SSRL BEAMLINES Beamline Steering Periods Gap(mm) Field(T) K Pwr(W) Yield(Ah) 1 Open OK - 48.0 1.249 - 71 211.21 2 Open OK - 48.0 1.249 - 71 211.21 4 Closed - 10 18.0 1.892 40.65 23388 0.00 5 Open - 14 28.7 0.375 4.90 783 204.14 6 Open OK 27 16.0 0.850 5.56 3879 211.21 7 Open - 10 17.4 1.930 41.46 24322 206.67 8 Open OK - 48.0 1.249 - 71 211.18 9 Open - 8 24.6 1.928

    8. EBIS preinjector construction status

      SciTech Connect (OSTI)

      Alessi,J.; Barton, D.; Beebe, E.; Bellavia, S.; Gould, O.; Kponou, A.; Lambiase, R.; Lessard, E.; Lockey, R.; LoDestro, V.; Mapes, M.; McCafferty, D.; McNerney, A.; Okamura, M.; Pendzick, A.; Phillips, D.; Pikin, A.; Raparia, D.; Ritter, J.; Scaduto, J.; Snydstrup, L.; Wilinski, M.; Zaltsman, A.; et al.

      2008-09-29

      A new heavy ion preinjector is presently under construction at Brookhaven National Laboratory. This preinjector uses an Electron Beam Ion Source (EBIS), and an WQ and IH Linac, both operating at 100.625 MHz, to produce 2 MeV/u ions of any species for use, after further acceleration, at the Relativistic Heavy Ion Collider, and the NASA Space Radiation Laboratory. Among the increased capabilities provided by this preinjector are the ability to produce ions of any species, and the ability to switch between multiple species in 1 second, to simultaneously meet the needs of both physics programs. Fabrication of all major components for this preinjector is in process, with testing of the EBIS and WQ starting this year. The status of this construction is presented.

    9. French gas-storage project nearing completion

      SciTech Connect (OSTI)

      Laguerie, P. de ); Durup, J.G. )

      1994-12-12

      Geomethane, jointly formed by Gaz de France and Geostock, is currently converting 7 of 36 solution-mined salt cavities at Manosque in southeast France from liquid hydrocarbon storage to natural-gas storage. In view of the large diameter (13 3/8 in.) of the original production wells and safety requirements, a unique high-capacity well completion has been developed for this project. It will have two fail-safe valves and a flow crossover 30 m below ground to isolate the production well in the event of problems at the surface. The project lies in the wooded Luberon Nature Reserve and due consideration has been given to locating the surface plant and blending it with the surroundings. The production wellheads are extra-low designs, the main plant was located outside the sensitive area, and the pipeline routes were landscaped. The paper discusses the history of salt cavern storage of natural gas; site characteristics; Manosque salt geology; salt mining and early storage; siting; engineering and construction; completion and monitoring; nature reserve protection; and fire and earthquake hazard mitigation.

    10. Complete Mie-Gruneisen Equation of State

      SciTech Connect (OSTI)

      Menikoff, Ralph

      2012-06-28

      The Mie-Gruneisen equation of state (EOS) is frequently used in hydro simulations to model solids at high pressure (up to a few Mb). It is an incomplete EOS characterized by a Gruneisen coefficient, {Lambda} = -V({partial_derivative}{sub e}P){sub V}, that is a function of only V. Expressions are derived for isentropes and isotherms. This enables the extension to a complete EOS. Thermodynamic consistency requires that the specific heat is a function of a single scaled temperature. A complete extension is uniquely determined by the temperature dependence of the specific heat at a fixed reference density. In addition we show that if the domain of the EOS extends to T = 0 and the specific heat vanishes on the zero isotherm then {Lambda} a function of only V is equivalent to a specific heat with a single temperature scale. If the EOS domain does not include the zero isotherm, then a specific heat with a single temperature scale leads to a generalization of the Mie-Gruneisen EOS in which the pressure is linear in both the specific energy and the temperature. Such an EOS has previously been used to model liquid nitromethane.

    11. ARM - Ingest Associated Status Reports

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

      Associated Status Reports Ingest Ingest Workflow Graphic Supporting Workflow Documentation Supporting Tools and Forms Process Configuration Manager (PCM) Metadata Management Tool (MMT) ARM Data Integrator (ADI) Ingest Readiness Form Associated Status Reports Contacts Engineering Processes Engineering Home Workflow Graphic Engineering Workflow Document Tools for Workflow ECR ECO BCR Ingests Value-Added Products Reprocessing Instruments Data System Elements Field Campaign Startup Ingest Associated

    12. High-Pressure Single-Crystal Neutron Scattering Study of Magnetic and Fe Vacancy Orders in (Tl,Rb)2 Fe4 Se5 Superconductor

      SciTech Connect (OSTI)

      Ye, Feng; Bao, Wei; Chi, Song-Xue; Santos, Antonio M. dos; Molaison, Jamie J.; Fang, Ming-Hu; Wang, Hang-Dong; Mao, Qian-Hui; Wang, Jin-Chen; Liu, Juan-Juan; Sheng, Jie-Ming

      2014-12-01

      We investigate the magnetic and iron vacancy orders in superconducting (Tl,Rb)2Fe4Se5 single-crystals by using a high-pressure neutron diffraction technique. Similar to the temperature effect, the block antiferromagnetic order gradually decreases upon increasing pressure while the Fe vacancy superstructural order remains intact before its precipitous disappearance at the critical pressure Pc = 8.3 GPa. Combined with previously determined Pc for superconductivity, our phase diagram under pressure reveals the concurrence of the block AFM order, the √5 × √5 iron vacancy order and superconductivity for the 245 superconductor. Lastly, a synthesis of current experimental data in a coherent physical picture is attempted.

    13. Direct memory access transfer completion notification

      DOE Patents [OSTI]

      Chen, Dong; Giampapa, Mark E.; Heidelberger, Philip; Kumar, Sameer; Parker, Jeffrey J.; Steinmacher-Burow, Burkhard D.; Vranas, Pavlos

      2010-07-27

      Methods, compute nodes, and computer program products are provided for direct memory access (`DMA`) transfer completion notification. Embodiments include determining, by an origin DMA engine on an origin compute node, whether a data descriptor for an application message to be sent to a target compute node is currently in an injection first-in-first-out (`FIFO`) buffer in dependence upon a sequence number previously associated with the data descriptor, the total number of descriptors currently in the injection FIFO buffer, and the current sequence number for the newest data descriptor stored in the injection FIFO buffer; and notifying a processor core on the origin DMA engine that the message has been sent if the data descriptor for the message is not currently in the injection FIFO buffer.

    14. Gun below packer completion tool string

      SciTech Connect (OSTI)

      Brieger, E. F.; Colle Jr., E. A.; George, F. R.

      1985-09-03

      A perforating gun is suspended downhole in a cased borehole, in underlying relationship relative to a packer device, and adjacent to a hydrocarbon-bearing formation to be completed. A connecting tubing interconnects the gun with the packer device, and includes a rupture barrier therebetween which prevents debris from accumulating within a gun firing head. An upper tubing string is removably connected to the packer device and forms a passageway which extends from the surface of the earth, down through the packer, and to the gun firing head. The upper tubing string includes a seal means and an extension tube which sealingly engages the packer device and penetrates the rupture barrier to provide a passageway through which the gun can be fired from the surface of the earth. This combination of elements prevents malfunction of the gun when the tool is left downhole for an appreciable length of time.

    15. Engineering task plan TWRS technical baseline completion

      SciTech Connect (OSTI)

      Moore, T.L

      1996-03-08

      The Tank Waste Remediation System (TWRS) includes many activities required to remediate the radioactive waste stored in underground waste storage tanks. These activities include routine monitoring of the waste, facilities maintenance, upgrades to existing equipment, and installation of new equipment necessary to manage, retrieve, process, and dispose of the waste. In order to ensure that these multiple activities are integrated, cost effective, and necessary, a sound technical baseline is required from which all activities can be traced and measured. The process by which this technical baseline is developed will consist of the identification of functions, requirements, architecture, and test (FRAT) methodology. This process must be completed for TWRS to a level that provides the technical basis for all facility/system/component maintenance, upgrades, or new equipment installation.

    16. Slant hole completion test. Final report

      SciTech Connect (OSTI)

      Mann, R.L.

      1993-07-01

      One of the Department of Energy`s (DOE) Strategies and Objectives in the Natural Gas Program is to conduct activities to transfer technology from R&D programs to potential users. The Slant Hole Completion Test has achieved exactly this objective. The Slant Hole site is essentially the same as the Multiwell site and is located in the southeastern portion of the Piceance Basin near Rifle, Colorado. The Piceance Basin is typical of the Western low permeability basins that contain thick sequences of sands, silts and coals deposited during the Cretaceous period. These sequences contain vast amounts of natural gas but have proven to be resistant to commercial production because of the low permeability of the host rocks. Using the knowledge gained from the DOE`s earlier Multiwell experiment, the SHCT-1 was drilled to demonstrate that by intersecting the natural fractures found in these ``tight rocks,`` commercial gas production can be obtained.

    17. Influence of in-plane and bridging oxygen vacancies of SnO{sub 2} nanostructures on CH{sub 4} sensing at low operating temperatures

      SciTech Connect (OSTI)

      Bonu, Venkataramana Das, A. Prasad, Arun K.; Dhara, Sandip; Tyagi, A. K.; Krishna, Nanda Gopala

      2014-12-15

      Role of O defects in sensing pollutant with nanostructured SnO{sub 2} is not well understood, especially at low temperatures. SnO{sub 2} nanoparticles were grown by soft chemistry route followed by subsequent annealing treatment under specific conditions. Nanowires were grown by chemical vapor deposition technique. A systematic photoluminescence (PL) investigation of O defects in SnO{sub 2} nanostructures revealed a strong correlation between shallow donors created by the in-plane and the bridging O vacancies and gas sensing at low temperatures. These SnO{sub 2} nanostructures detected methane (CH{sub 4}), a reducing and green house gas at a low temperature of 50?C. Response of CH{sub 4} was found to be strongly dependent on surface defect in comparison to surface to volume ratio. Control over O vacancies during the synthesis of SnO{sub 2} nanomaterials, as supported by X-ray photoelectron spectroscopy and subsequent elucidation for low temperature sensing are demonstrated.

    18. ER-12-1 completion report

      SciTech Connect (OSTI)

      Russell, C.E.; Gillespie, D.; Cole, J.C.; Drellack, S.L.

      1996-12-01

      The objective of drillhole ER-12-1 was to determine the hydrogeology of paleozoic carbonate rocks and of the Eleana Formation, a regional aquitard, in an area potentially downgradient from underground nuclear testing conducted in nearby Rainier Mesa. This objective was addressed through the drilling of well ER-12-1 at N886,640.26 E640,538.85 Nevada Central Coordinates. Drilling of the 1094 m (3588 ft) well began on July 19, 1991 and was completed on October 17, 1991. Drilling problems included hole deviation and hole instability that prevented the timely completion of this borehole. Drilling methods used include rotary tri-cone and rotary hammer drilling with conventional and reverse circulation using air/water, air/foam (Davis mix), and bentonite mud. Geologic cuttings and geophysical logs were obtained from the well. The rocks penetrated by the ER-12-1 drillhole are a complex assemblage of Silurian, Devonian, and Mississippian sedimentary rocks that are bounded by numerous faults that show substantial stratigraphic offset. The final 7.3 m (24 ft) of this hole penetrated an unusual intrusive rock of Cretaceous age. The geology of this borehole was substantially different from that expected, with the Tongue Wash Fault encountered at a much shallower depth, paleozoic rocks shuffled out of stratigraphic sequence, and the presence of an altered biotite-rich microporphyritic igneous rock at the bottom of the borehole. Conodont CAI analyses and rock pyrolysis analyses indicate that the carbonate rocks in ER-12-1, as well as the intervening sheets of Eleana siltstone, have been thermally overprinted following movement on the faults that separate them. The probable source of heat for this thermal disturbance is the microporphyritic intrusion encountered at the bottom of the hole, and its age establishes that the major fault activity must have occurred prior to 102.3+0.5 Ma (middle Cretaceous).

    19. Status of MICE

      SciTech Connect (OSTI)

      Soler, F. J. P.

      2010-03-30

      The Muon Ionization Cooling Experiment (MICE) is an experiment currently under construction at the Rutherford Appleton Laboratory (RAL) in the UK. The aim of the experiment is to demonstrate the concept of ionization cooling for a beam of muons, crucial for the requirements of a Neutrino Factory and a Muon Collider. Muon cooling is achieved by measuring the reduction of the four dimensional transverse emittance for a beam of muons passing through low density absorbers and then accelerating the longitudinal component of the momentum using RF cavities. The absorbers are maintained in a focusing magnetic field to reduce the beta function of the beam and the RF cavities are kept inside coupling coils. The main goal of MICE is to measure a fractional drop in emittance, of order -10% for large emittance beams, with an accuracy of 1%(which imposes a requirement that the absolute emittance be measured with an accuracy of 0.1%). This paper will discuss the status of MICE, including the progress in commissioning the muon beam line at the ISIS accelerator at RAL, the construction of the different detector elements in MICE and the prospects for the future.

    20. Department of Energy Completes Demolition of K-33 Building - Largest

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

      Completed Demo Project in Oak Ridge History | Department of Energy Completes Demolition of K-33 Building - Largest Completed Demo Project in Oak Ridge History Department of Energy Completes Demolition of K-33 Building - Largest Completed Demo Project in Oak Ridge History September 30, 2011 - 12:00pm Addthis Media Contact Ben Williams http://www.oakridge.doe.gov 865-576-0885 OAK RIDGE, Tenn. - The U.S. Department of Energy's Oak Ridge Environmental Management (EM) program recently completed

    1. Sediment Properties: E-Area Completion Project

      SciTech Connect (OSTI)

      Millings, M.; Bagwell, L.; Amidon, M.; Dixon, K.

      2011-04-29

      To accommodate a future need for additional waste disposal facilities at the Savannah River Site, the Solid Waste Management Division (SWMD) designated nine additional plots for development (Kasraii 2007; SRS 2010); these plots are collectively known as the E Area Completion Project (ECP). Subsurface samples were collected from ECP plots 6, 7, 8 and 9 (Figure 1) for chemical and physical property analyses to support Performance Assessment (PA) and Special Analyses (SA) modeling. This document summarizes the sampling and analysis scheme and the resultant data, and provides interpretations of the data particularly in reference to existing soil property data. Analytical data in this document include: gamma log, cone penetrometer log, grain size (sieve and hydrometer), water retention, saturated hydraulic conductivity (falling head permeameter), porosity, dry bulk density, total organic carbon, x-ray diffraction, and x-ray fluorescence data. SRNL provided technical and safety oversight for the fieldwork, which included completion of eight soil borings, four geophysical logs, and the collection of 522 feet of core and 33 Shelby tubes from ECP plots 6, 7, 8, and 9. Boart Longyear provided sonic drilling and logging services. Two soil borings were completed at each location. The first set of boreholes extended into (but did not fully penetrate) the Warley Hill Formation. These boreholes were continuously cored, then geophysically (gamma ray) logged. The recovered core was split, photographed, and described; one half of the core was archived at SRS's Core Lab facilities, and the remaining half was consumed as necessary for testing at SRS and off-site labs. Core descriptions and geophysical data were used to calculate target elevations for Shelby tube samples, which were obtained from the second set of boreholes. Shelby tubes were shipped to MACTEC Engineering and Consulting Inc. (MACTEC) in Atlanta for physical property testing. SRNL deployed their Site Characterization

    2. Declaration of Construction Completion and Verification of Readiness...

      Energy Savers

      Declaration of Construction Completion and Verification of Readiness to Test Declaration of Construction Completion and Verification of Readiness to Test Salt Waste Processing ...

    3. Nevada Proof of Completion of Work (Water Right) | Open Energy...

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

      Proof of Completion of Work (Water Right) Abstract Required notice of completion of diversion works for establishing a water right. Form Type ApplicationNotice Form Topic Proof...

    4. Category:Completed Case Study | Open Energy Information

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

      Apps Datasets Community Login | Sign Up Search Category Edit History Category:Completed Case Study Jump to: navigation, search List of geothermal areas that have a completed...

    5. FEMP Completes 2000th Renewable Energy Optimization Screening...

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

      FEMP Completes 2000th Renewable Energy Optimization Screening FEMP Completes 2000th Renewable Energy Optimization Screening July 23, 2015 - 12:03pm Addthis REopt models the complex ...

    6. Governor to Join Jefferson Lab in Celebrating Completion of Accelerato...

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

      Completion of Accelerator Upgrade Construction Governor to Join Jefferson Lab in Celebrating Completion of Accelerator Upgrade Construction CEBAF Race Track This aerial photo ...

    7. Successful River Corridor Contractor Completes Extra Work Scope...

      Office of Environmental Management (EM)

      Successful River Corridor Contractor Completes Extra Work Scope, Saving DOE 300 Million Successful River Corridor Contractor Completes Extra Work Scope, Saving DOE 300 Million ...

    8. NNSA, LANL Complete DARHT Improvements With Successful Multi...

      National Nuclear Security Administration (NNSA)

      NNSA, LANL Complete DARHT Improvements With Successful Multi-frame Hydrodynamic Test ... (LANL) Dual Axis Radiographic Hydrodynamic Test (DARHT) facility has completed another ...

    9. Secretary Chu Announces Completion of Critical Energy Conservation...

      Office of Environmental Management (EM)

      Completion of Critical Energy Conservation Appliance Standards Secretary Chu Announces Completion of Critical Energy Conservation Appliance Standards September 1, 2009 - 12:00am ...

    10. Modeling a complete Stirling engine (Journal Article) | DOE PAGES

      Office of Scientific and Technical Information (OSTI)

      Modeling a complete Stirling engine This content will become publicly available on March 12, 2017 Prev Next Title: Modeling a complete Stirling engine Authors: Paul, ...

    11. Sandia Energy - Unmanned Aircraft Test Flights Completed at Oliktok...

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

      Unmanned Aircraft Test Flights Completed at Oliktok Point Home Climate News News & Events Monitoring Sensing Sensing & Monitoring Unmanned Aircraft Test Flights Completed at...

    12. Temporary Bridging Agents for Use in Drilling and Completions...

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

      Temporary Bridging Agents for Use in Drilling and Completions of EGS Temporary Bridging Agents for Use in Drilling and Completions of EGS DOE Geothermal Peer Review 2010 - ...

    13. Entiat 4Mile WELLs Completion Report, 2006.

      SciTech Connect (OSTI)

      Malinowksi, Richard

      2007-01-01

      The Entiat 4-mile Wells (Entiat 4-mile) project is located in the Entiat subbasin and will benefit Upper Columbia steelhead, spring Chinook and bull trout. The goal of this project is to prevent juvenile fish from being diverted into an out-of-stream irrigation system and to eliminate impacts due to the annual maintenance of an instream pushup dam. The objectives include eliminating a surface irrigation diversion and replacing it with two wells, which will provide Bonneville Power Administration (BPA) and the Bureau of Reclamation (Reclamation) with a Federal Columbia River Power System (FCRPS) BiOp metric credit of one. Wells were chosen over a new fish screen based on biological benefits and costs. Long-term biological benefits are provided by completely eliminating the surface diversion and the potential for fish entrainment in a fish screen. Construction costs for a new fish screen were estimated at $150,000, which does not include other costs associated with implementing and maintaining a fish screening project. Construction costs for a well were estimated at $20,000 each. The diversion consisted of a pushup dam that diverted water into an off-channel pond. Water was then pumped into a pressurized system for irrigation. There are 3 different irrigators who used water from this surface diversion, and each has multiple water right claims totaling approximately 5 cfs. Current use was estimated at 300 gallons per minute (approximately 0.641 cfs). Some irrigated acreage was taken out of orchard production less than 5 years ago. Therefore, approximately 6.8 acre-feet will be put into the State of Washington Trust Water Right program. No water will be set aside for conservation savings. The construction of the two irrigation wells for three landowners was completed in September 2006. The Lower Well (Tippen/Wick) will produce up to 175 gpm while the Upper Well (Griffith) will produce up to 275 gpm during the irrigation season. The eight inch diameter wells were

    14. Process development status report for advanced manufacturing projects

      SciTech Connect (OSTI)

      Brinkman, J.R.; Homan, D.A.

      1990-03-30

      This is the final status report for the approved Advanced Manufacturing Projects for FY 1989. Five of the projects were begun in FY 1987, one in FY 1988, and one in FY 1989. The approved projects cover technology areas in welding, explosive material processing and evaluation, ion implantation, and automated manufacturing. It is expected that the successful completion of these projects well result in improved quality and/or reduced cost for components produced by Mound. Those projects not brought to completion will be continued under Process development in FY 1990.

    15. Single trip completion of spaced formations

      SciTech Connect (OSTI)

      Vann, R.R.; Brieger, E.F.

      1986-09-23

      A method is described of perforating two spaced-apart formations, which consists of: positioning a first perforating gun in a borehole adjacent to a first formation and a second perforating gun in the borehole adjacent to a second formation; detonating the charges of the first gun to create a pressure shock wave, the pressure shock wave being generated by application of the explosive force from firing the first gun to a movable wall closing one end of a column of fluid; directing the pressure shock wave to means for detonating the charges of the second gun; and detonating the charges of the second gun in response to the pressure shock wave. An apparatus is described for completing a well, comprising; first perforating means for perforating one portion of the well; second perforating means for perforating another portion of the well; means for transmitting a fluid pulse upon detonation of the first perforating means; and means for receiving the fluid pulse to actuate the detonation of the second perforating means.

    16. July 2012, Work Force Retention Work Group Status Overview

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

      Work Force Retention Work Group Status Overview Accomplishments: 1. Progress on the completion of the 10 CFR 1046 modifications to address barriers to workforce retention. Written response to public comment is being drafted by HS-51. 2. Pro-Force (PF) union representative, Randy Lawson, identified this accomplishment as the single most significant step toward PF workforce retention in over 20 years. 3. Draft re-charter of PF Career Options Committee (PFCOC) to establish a PF Working Group

    17. September 2012, Work Force Retention Work Group Status Overview

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

      Work Force Retention Work Group Status Overview 2 Subgroups: Pro-Force and Non-Pro-Force Pro-Force Subgroup: Accomplishments: 1. Completion of 10 CFR 1046 [Protective Force Personnel Medical, Physical Readiness, Training, and Access Authorization Standards] as a final rule that includes modification efforts to address barriers to workforce retention. 2. Pro-Force (PF) union representative, Randy Lawson, identified this accomplishment as the single most significant step toward PF workforce

    18. Status of the Magma Energy Project

      SciTech Connect (OSTI)

      Dunn, J.C.

      1987-01-01

      The current magma energy project is assessing the engineering feasibility of extracting thermal energy directly from crustal magma bodies. The estimated size of the US resource (50,000 to 500,000 quads) suggests a considerable potential impact on future power generation. In a previous seven-year study, we concluded that there are no insurmountable barriers that would invalidate the magma energy concept. Several concepts for drilling, energy extraction, and materials survivability were successfully demonstrated in Kilauea Iki lava lake, Hawaii. The present program is addressing the engineering design problems associated with accessing magma bodies and extracting thermal energy for power generation. The normal stages for development of a geothermal resource are being investigated: exploration, drilling and completions, production, and surface power plant design. Current status of the engineering program and future plans are described. 20 refs., 12 figs.

    19. ILC Marx Modulator Development Program Status

      SciTech Connect (OSTI)

      Burkhart, C.; Beukers, T.; Larsen, R.; Macken, K.; Nguyen, M.; Olsen, J.; Tang, T.; /SLAC

      2009-03-04

      Development of a first generation prototype (P1) Marx-topology klystron modulator for the International Linear Collider is nearing completion at the Stanford Linear Accelerator Center. It is envisioned as a smaller, lower cost, and higher reliability alternative to the present, bouncer-topology, 'Baseline Conceptual Design'. The Marx presents several advantages over conventional klystron modulator designs. It is physically smaller; there is no pulse transformer (quite massive at ILC parameters) and the energy storage capacitor bank is quite small, owing to the active droop compensation. It is oil-free; voltage hold-off is achieved using air insulation. It is air cooled; the secondary air-water heat exchanger is physically isolated from the electronic components. The P1-Marx employs all solid state elements; IGBTs and diodes, to control the charge, discharge and isolation of the cells. A general overview of the modulator design and the program status are presented.

    20. Hanford Site Completes Successful River Corridor Closure Contract...

      Office of Environmental Management (EM)

      the River Corridor Closure Contract scope when Washington Closure Hanford's (WCH) ... reviewing project statuses, timelines, scope, compliance requirements and processes for ...

    1. Active Oxygen Vacancy Site for Methanol Synthesis from CO2 Hydrogenation on In2O3(110): A DFT Study

      SciTech Connect (OSTI)

      Ye, Jingyun; Liu, Changjun; Mei, Donghai; Ge, Qingfeng

      2013-06-03

      Methanol synthesis from CO2 hydrogenation on the defective In2O3(110) surface with surface oxygen vacancies has been investigated using periodic density functional theory calculations. The relative stabilities of six possible surface oxygen vacancies numbered from Ov1 to Ov6 on the perfect In2O3(110) surface were examined. The calculated oxygen vacancy formation energies show that the D1 surface with the Ov1 defective site is the most thermodynamically favorable while the D4 surface with the Ov4 defective site is the least stable. Two different methanol synthesis routes from CO2 hydrogenation over both D1 and D4 surfaces were studied and the D4 surface was found to be more favorable for CO2 activation and hydrogenation. On the D4 surface, one of the O atoms of the CO2 molecule fills in the Ov4 site upon adsorption. Hydrogenation of CO2 to HCOO on the D4 surface is both thermodynamically and kinetically favorable. Further hydrogenation of HCOO involves both forming the C-H bond and breaking the C-O bond, resulting in H2CO and hydroxyl. The HCOO hydrogenation is slightly endothermic with an activation barrier of 0.57 eV. A high barrier of 1.14 eV for the hydrogenation of H2CO to H3CO indicates that this step is the rate-limiting step in the methanol synthesis on the defective In2O3(110) surface. We gratefully acknowledge the supports from the National Natural Science Foundation of China (#20990223) and from US Department of Energy, Basic Energy Science program (DE-FG02-05ER46231). D. Mei was supported by the US Department of Energy, Office of Basic Energy Sciences, Division of Chemical Sciences, Geosciences & Biosciences. The computations were performed in part using the Molecular Science Computing Facility in the William R. Wiley Environmental Molecular Sciences Laboratory (EMSL), which is a U.S. Department of Energy national scientific user facility located at Pacific Northwest National Laboratory in Richland, Washington. PNNL is a multiprogram national laboratory

    2. Machine Status and Schedule | Advanced Photon Source

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

      @apsnotify on Twitter | RSS feed Email lists: APS Notify | XRAYOPS APSStatus App: Android Beamline Status Beamline Status Beam Properties Beam Properties Storage Ring...

    3. Special Status Species | Open Energy Information

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

      Status Species Jump to: navigation, search Retrieved from "http:en.openei.orgwindex.php?titleSpecialStatusSpecies&oldid647804" Feedback Contact needs updating Image...

    4. Machine Status | Argonne Leadership Computing Facility

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

      User Support User Support Machine Status Presentations Training & Outreach User Survey Machine Status MIRA 0 CETUS 0 VESTA 0 TUKEY 0

    5. Monthly Status Reports | Department of Energy

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

      Monthly Status Reports Monthly Status Reports Active Project Justification Statement Project Registration Number Assignments (Active) All Active DOE Technical Standards Document ...

    6. Project Registration Number Assignments (Completed) | Department of Energy

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

      Completed) Project Registration Number Assignments (Completed) As of: May 2016 Provides a table of Project Registration Number Assignments (Completed) Project Registration Number Assignments (Completed) (406.85 KB) More Documents & Publications All Active DOE Technical Standards Document Project Registration Number Assignments (Active

    7. Site Transition Process Upon Cleanup Completion | Department of Energy

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

      Process Upon Cleanup Completion Site Transition Process Upon Cleanup Completion Site Transition Process Upon Cleanup Completion Site Transition Process Upon Cleanup Completion (201.91 KB) More Documents & Publications Recommendation 198: Establish a site transition process Recommendation 218: Develop a Fact Sheet on Site Transition at On-going Mission Sites EM SSAB Conference Calls - January 27, 2011

    8. Plant Operational Status - Pantex Plant

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

      Plant Operational Status Plant Operational Status Page Content Shift 1 - Day The Pantex Plant is open for normal Day Shift operations. Plant personnel are to report as assigned. Personnel may call 477-3000, Option 1 for additional details. Shift 2 - Swing The Pantex Plant is open for normal Swing Shift operations. Plant personnel are to report as assigned. Personnel may call 477-3000, Option 1 for additional details. Shift 3 - Grave The Pantex Plant is open for normal Graveyard Shift operations.

    9. 309 Facility deactivation and decommisioning Criteria Completion Check Lists

      SciTech Connect (OSTI)

      Cornwell, B.C.

      1996-02-01

      To facilitate and track completion of the 309 Facility turnover criteria completion an Applicability Matrix and Criteria Completion Check Lists were prepared. The applicability matrix documents the required turnover criteria for a given area in the facility or scope of work. The applicable criteria is selected for 16 different areas. For each area a completion checklist is provided to document completion of a requirement by WHC and the Environmental Restoration Contractor.

    10. Chris Bergren Director, Environment Compliance & Area Completion Projects

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

      Deactivation & Decommissioning at SRS Chris Bergren Director, Environment Compliance & Area Completion Projects DOE Office of Environmental Management Robotics Team Visit to SRS Tuesday, December 8, 2015 Tony Long Acting Manager, Area Completion Projects T Area Completion Area Completions Then Now M Area Completion Now Then Now 2 In Situ Decommissioning of the Heavy Water Components Test Reactor (HWCTR) Before Reactor Dome Removal Reactor Vessel Removal Demolition of Dome After 3 K-Area

    11. Direct observation of oxygen-vacancy-enhanced polarization in a SrTiO3-buffered ferroelectric BaTiO3 film on GaAs

      SciTech Connect (OSTI)

      Qiao, Q.; Zhang, Y.; Contreras-Guerrero, Rocio; Droopad, Ravi; Pantelides, S. T.; Pennycook, Stephen J.; Ogut, Serdar; Klie, Robert F.

      2015-11-16

      The integration of functional oxide thin-films on compound semiconductors can lead to a class of reconfigurable spin-based optoelectronic devices if defect-free, fully reversible active layers are stabilized. However, previous first-principles calculations predicted that SrTiO3 thin filmsgrown on Si exhibit pinned ferroelectric behavior that is not switchable, due to the presence of interfacial vacancies. Meanwhile, piezoresponse force microscopy measurements have demonstrated ferroelectricity in BaTiO3 grown on semiconductor substrates. The presence of interfacial oxygen vacancies in such complex-oxide/semiconductor systems remains unexplored, and their effect on ferroelectricity is controversial. We also use a combination of aberration-corrected scanning transmission electron microscopy and first-principles density functional theory modeling to examine the role of interfacial oxygen vacancies on the ferroelectricpolarization of a BaTiO3 thin filmgrown on GaAs. Moreover, we demonstrate that interfacial oxygen vacancies enhance the polar discontinuity (and thus the single domain, out-of-plane polarization pinning in BaTiO3), and propose that the presence of surface charge screening allows the formation of switchable domains.

    12. Narrow-band single photon emission at room temperature based on a single nitrogen-vacancy center coupled to an all-fiber-cavity

      SciTech Connect (OSTI)

      Albrecht, Roland; Bommer, Alexander; Becher, Christoph; Pauly, Christoph; Mücklich, Frank; Schell, Andreas W.; Engel, Philip; Benson, Oliver; Schröder, Tim; Reichel, Jakob

      2014-08-18

      We report the realization of a device based on a single Nitrogen-Vacancy (NV) center in diamond coupled to a fiber-cavity for use as single photon source (SPS). The device consists of two concave mirrors each directly fabricated on the facets of two optical fibers and a preselected nanodiamond containing a single NV center deposited onto one of these mirrors. Both, cavity in- and out-put are directly fiber-coupled, and the emission wavelength is easily tunable by variation of the separation of the two mirrors with a piezo-electric crystal. By coupling to the cavity, we achieve an increase of the spectral photon rate density by two orders of magnitude compared to free-space emission of the NV center. With this work, we establish a simple all-fiber based SPS with promising prospects for the integration into photonic quantum networks.

    13. Application of Vacancy Injection Gettering to Improve Efficiency of Solar Cells Produced by Millinet Solar: Cooperative Research and Development Final Report, CRADA Number CRD-10-417

      SciTech Connect (OSTI)

      Sopori, B.

      2012-07-01

      NREL will apply vacancy injection gettering (VIG) to Millinet solar cells and evaluate the performance improvement produced by this process step. The VIG will be done in conjunction with the formation of a back, Al-alloyed, contact. Millinet Solar will provide NREL with cells having AR coating on the front side and screen-printed Al on the backside, which will be processed in the NREL's optical furnace to perform simultaneous VIG and back contact alloying with deep BSF. These cells will be sent back to Millinet solar for a screen-printed front/side contact mask, followed by a second firing at NREL. Detailed analyses will be performed to determine improvements due to BSF and VIG.

    14. Novel signal inversion of laser beam induced current for femtosecond-laser-drilling-induced junction on vacancy-doped p-type HgCdTe

      SciTech Connect (OSTI)

      Qiu, W. C.; Wang, R.; Xu, Z. J.; Jiang, T.; Cheng, X. A.

      2014-05-28

      In this paper, experimental results of temperature-dependent signal inversion of laser beam induced current (LBIC) for femtosecond-laser-drilling-induced junction on vacancy-doped p-type HgCdTe are reported. LBIC characterization shows that the traps induced by femtosecond laser drilling are sensitive to temperature. Theoretical models for trap-related p-n junction transformation are proposed and demonstrated using numerical simulations. The simulations are in good agreement with the experimental results. The effects of traps and mixed conduction are possibly the main reasons that result in the novel signal inversion of LBIC microscope at room temperature. The research results provide a theoretical guide for practical applications of large-scale array HgCdTe infrared photovoltaic detectors formed by femtosecond laser drilling, which may act as a potential new method for fabricating HgCdTe photodiodes.

    15. Joint Maintenance Status Report of Potomac Electric Power Company amd PJM

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

      Interconnection, LLC | Department of Energy Joint Maintenance Status Report of Potomac Electric Power Company amd PJM Interconnection, LLC Joint Maintenance Status Report of Potomac Electric Power Company amd PJM Interconnection, LLC Docket No. EO-05-01: Potomac Electric Power Company ("Pepco") and PJM Interconnection, L.L.C. ("PJM") hereby jointly submit this Maintenance Report to advise you of the work completed and findings made during the maintenance outages for

    16. DOE Golden Field Office Status of FOIA Requests Received - Fiscal Year (FY) 2015

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

      Golden Field Office Status of FOIA Requests Received - Fiscal Year (FY) 2015 Docket # Description of FOIA Request Status GO-15-001 "The following documents submitted by New England Aqua Ventus I under DE-EE- 0005990: The Awardee Down-Select Letter - Strengths and Weaknesses Document - SF-424, Statement of Project Objectives dated August 27, 2014 -Monthly Progress Report briefing dated October 2013 -New England Aqua Ventus I responses to DOE Questions dated April 2014" Completed -

    17. WIPP Status Update | Department of Energy

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

      WIPP Status Update WIPP Status Update Presentation from the 2016 DOE National Cleanup Workshop by Todd Shrader, Manager, DOE Carlsbad Field Office. WIPP Status Update (3.58 MB) More Documents & Publications Waste Isolation Pilot Plant Status Update September 2016 Resuming Operations at WIPP EM's National TRU Program and WIPP Recovery

    18. Document Status & Schedules | Department of Energy

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

      Document Status & Schedules Document Status & Schedules Schedules of Key Environmental Impact Statements This document graphically displays the milestone dates and projected schedules of key Environmental Impact Statements (updated monthly). Environmental Impact Statement and Environmental Assessment Status Chart The Status Chart provides the status of ongoing NEPA documents at the Department of Energy including the dates of important milestones in the NEPA process and references to more

    19. VPP Participant Status | Department of Energy

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

      Participant Status VPP Participant Status July 2015 The VPP Participants Status Table represents the current status of the DOE contractors with the DOE VPP Program. The table describes the level of accomplishment of each participant within the VPP Program along with NAICS code, employee population, program office lead, and upcoming reviews schedule. VPP Participants Status Update July 21, 2015 Rev. 14 (29.44 KB) More Documents & Publications Voluntary Protection Program Onsite Review,

    20. DOE Completes Cleanup at New York, California Sites | Department...

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

      DOE Completes Cleanup at New York, California Sites DOE Completes Cleanup at New York, California Sites July 1, 2011 - 12:00am Addthis WASHINGTON, D.C. - Last month, the U.S....

    1. EM's Los Alamos TRU Waste Campaign Heads Toward Completion |...

      Office of Environmental Management (EM)

      TRU Waste Campaign Heads Toward Completion EM's Los Alamos TRU Waste Campaign Heads Toward Completion November 20, 2013 - 12:00pm Addthis Advanced techniques allowed crews at Los ...

    2. Construction Completed on Wind Plant Optimization R&D Facility...

      Energy Savers

      Construction Completed on Wind Plant Optimization R&D Facility Construction Completed on Wind Plant Optimization R&D Facility April 1, 2013 - 12:33pm Addthis This is an excerpt ...

    3. NMSLO Affidavit of Completion of ROW Construction | Open Energy...

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

      NMSLO Affidavit of Completion of ROW Construction Jump to: navigation, search OpenEI Reference LibraryAdd to library Legal Document- OtherOther: NMSLO Affidavit of Completion of...

    4. DOE Seeks Commercial Storage to Complete Fill of Northeast Home...

      Office of Environmental Management (EM)

      to Complete Fill of Northeast Home Heating Oil Reserve DOE Seeks Commercial Storage to Complete Fill of Northeast Home Heating Oil Reserve August 26, 2011 - 1:00pm Addthis ...

    5. Completing Salt Waste Processing Facility is an EM Priority and...

      Office of Environmental Management (EM)

      Completing Salt Waste Processing Facility is an EM Priority and Key to SRS Cleanup Progress Completing Salt Waste Processing Facility is an EM Priority and Key to SRS Cleanup ...

    6. Environmental Management Completed Projects 2005-Present | Department of

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

      Energy Completed Projects 2005-Present Environmental Management Completed Projects 2005-Present This document provides the list of completed EM cleanup projects from various sites across the country from 2005 to present, along with the each project's performance related to cost, schedule, and scope. Environmental Management Completed Projects 2005-Present (389.48 KB) More Documents & Publications Environmental Compliance Performance Scorecard - Third Quarter FY2012 Environmental

    7. Completed On-Request Technical Assistance | Department of Energy

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

      Technical Assistance » Completed On-Request Technical Assistance Completed On-Request Technical Assistance Completed On-Request Technical Assistance The U.S. Department of Energy Office of Indian Energy provides federally recognized Indian tribes, including Alaska Native villages, tribal energy resource development organizations, and other organized tribal groups and communities, with technical assistance to advance tribal energy projects. The map and table below capture all completed

    8. Important Update on Cori Status

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

      Important Update on Cori Status Important Update on Cori Status June 30, 2016 by Rebecca Hartman-Baker We are grateful for your patience as we upgrade Cori to the latest operating system, a necessary step in enabling support for the upcoming Knights Landing Phase 2 of Cori. At 2:00 pm Pacific time, we will release the machine back to users. Before you log in and begin working on Cori again, here are a few important things you should know. Access to Cori Cori's host keys have changed. You will

    9. Apparatus for the concurrent inspection of partially completed welds

      DOE Patents [OSTI]

      Smartt, Herschel B.; Johnson, John A.; Larsen, Eric D.; Bitsoi, Rodney J.; Perrenoud, Ben C.; Miller, Karen S.; Pace, David P.

      2002-01-01

      An apparatus for the concurrent inspection of partially completed welds is described in which is utilized in combination with a moveable welder for forming a partially completed weld, and an ultrasonic generator mounted on a moveable welder in which is reciprocally moveable along a path of travel which is laterally disposed relative to the partially completed weld.

    10. CompleteProject List.doc | Department of Energy

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

      CompleteProject List.doc&#0; CompleteProject List.doc&#0; CompleteProject List.doc&#0; (9.47 KB) More Documents & Publications Tribal Energy Program February 2012 Award Project Descriptions CX-008525: Categorical Exclusion Determination 2010 Program Review Meeting

    11. NNSA Completes B61 Warhead Refurbishment | National Nuclear Security

      National Nuclear Security Administration (NNSA)

      Administration | (NNSA) Completes B61 Warhead Refurbishment NNSA Completes B61 Warhead Refurbishment Washington, DC NNSA completed a six-year effort to deliver the first refurbished B61 nuclear bomb. This program will extend the life of the B61 Mod-7 and Mod-11 strategic bombs in the U.S. nuclear weapons stockpile

    12. Habitat Projects Completed within the Asotin Creek Watershed, 1998 Completion Report.

      SciTech Connect (OSTI)

      Johnson, Bradley J.

      1999-11-01

      The Asotin Creek Model Watershed Program (ACMWP) is the primary entity coordinating habitat projects on both private and public lands within the Asotin Creek watershed. The Asotin Creek watershed covers approximately 325 square miles in the Blue Mountains of southeastern Washington. Snake River spring chinook salmon, summer steelhead and bull trout, which are listed under the Endangered Species Act (ESA), are present in the watershed. The ACMWP began coordinating habitat projects in 1995. Approximately two hundred forty-six projects have been implemented through the ACMWP as of 1998. Fifty-nine of these projects were funded in part through Bonneville Power Administration's 1998 Columbia Basin Fish and Wildlife Program. These projects used a variety of methods to enhance and protect watershed conditions. In-stream work for fish habitat included construction of hard structures (e.g. vortex rock weirs), meander reconstruction, placement of large woody debris (LWD) and whole trees and improvements to off-channel rearing habitat; one hundred thirty-nine pools were created with these structures. Three miles of stream benefited from riparian improvements such as fencing, vegetative plantings, and noxious weed control. Two alternative water developments were completed, providing off-stream-watering sources for livestock. 20,500 ft of upland terrace construction, seven sediment basin construction, one hundred eighty-seven acres of grass seeding, eight hundred fifty acres of direct seeding and eighteen sediment basin cleanouts were implemented to reduce sediment production and delivery to streams in the watershed.

    13. Method for the concurrent ultrasonic inspection of partially completed welds

      DOE Patents [OSTI]

      Johnson, John A. (Idaho Falls, ID); Larsen, Eric D. (Idaho Falls, ID); Miller, Karen S. (Idaho Falls, ID); Smartt, Herschel B. (Idaho Falls, ID); McJunkin, Timothy R. (Idaho Falls, ID)

      2002-01-01

      A method for the concurrent ultrasonic inspection of partially completed welds is disclosed and which includes providing a pair of transducers which are individually positioned on the opposite sides of a partially completed weld to be inspected; moving the transducers along the length of and laterally inwardly and outwardly relative to the partially completed weld; pulsing the respective transducers to produce an ultrasonic signal which passes through or is reflected from the partially completed weld; receiving from the respective transducers ultrasonic signals which pass through or are reflected from the partially completed welds; and analyzing the ultrasonic signal which has passed through or is reflected from the partially completed weld to determine the presence of any weld defects.

    14. The effect of oxygen vacancies on the electronic phase transition in La{sub 1/3}Sr{sub 2/3}FeO{sub 3} films

      SciTech Connect (OSTI)

      Sichel-Tissot, Rebecca J.; Devlin, Robert C.; May, Steven J.; Ryan, Philip J.; Kim, Jong-Woo

      2013-11-18

      Synchrotron x-ray diffraction and electrical resistivity were used to probe the electronic phase transition in two strained La{sub 1/3}Sr{sub 2/3}FeO{sub 3} films on (001) SrTiO{sub 3} substrates, one nominally stoichiometric and one with a higher concentration of oxygen vacancies. We present evidence that oxygen vacancies inhibit the size of charge ordered domains and reduce the abruptness of the phase transition. Additionally, the correlation lengths measured from (4/3 4/3 4/3) peaks, arising from charge disproportionation, increase rapidly across the transition, suggesting that the resistivity increase at the transition temperature is caused by the nucleation and growth of charge ordered domains.

    15. Secretary Bodman Celebrates Clean Up Completion of Three Former Weapons

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

      Research and Production Sites in Ohio | Department of Energy Clean Up Completion of Three Former Weapons Research and Production Sites in Ohio Secretary Bodman Celebrates Clean Up Completion of Three Former Weapons Research and Production Sites in Ohio January 19, 2007 - 9:59am Addthis Over 1,100 Acres in Fernald, Columbus and Ashtabula Restored CROSBY TOWNSHIP, OH - U.S. Secretary of Energy Samuel W. Bodman today certified that environmental cleanup is complete at three former weapons

    16. Secretary Chu Announces Completion of Critical Energy Conservation

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

      Appliance Standards | Department of Energy Completion of Critical Energy Conservation Appliance Standards Secretary Chu Announces Completion of Critical Energy Conservation Appliance Standards September 1, 2009 - 12:00am Addthis Washington, DC - U.S. Energy Secretary Steven Chu announced today that the Department of Energy has completed energy efficiency standards for a critical group of appliances that will together save up to 1.1 billion metric tons of carbon dioxide once in effect. In

    17. Completed Enhanced Oil Recovery and Other Oil Resoureces Projects

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

      Completed Enhanced Oil Recovery and Other Oil Resoureces Projects Active | Completed Projects Completed Enhanced Oil Recovery and Other Oil Resources Projects Project Number Project Name Primary Performer 10122-39 Novel Engineered Osmosis Technology: A Comprehensive Approach to the Treatment and Reuse of Produced Water and Drilling Wastewater Colorado School of Mines 11123-03 Cost-Effective Treatment of Produced Water Using Co-Produced Energy Sources - Phase II: Field Scale Demo and

    18. Energy Department Completes Cool Roof Installation on DC Headquarters

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

      Building to Save Money by Saving Energy | Department of Energy Completes Cool Roof Installation on DC Headquarters Building to Save Money by Saving Energy Energy Department Completes Cool Roof Installation on DC Headquarters Building to Save Money by Saving Energy December 14, 2010 - 12:00am Addthis Washington - Secretary Steven Chu today announced the completion of a new cool roof installation on the Department of Energy's Headquarters West Building. There was no incremental cost to adding

    19. Completed Projects | U.S. DOE Office of Science (SC)

      Office of Science (SC) [DOE]

      Completed Projects Project Assessment (OPA) OPA Home About Project Management SC Projects Review Dates (updated October 2016) Project Construction Photos Completed Projects Current Projects Other Links SC Federal Project Directors (FPD) and FPD Resources Contact Information Project Assessment U.S. Department of Energy SC-28/Germantown Building 1000 Independence Ave., SW Washington, DC 20585 P: (301) 903-4840 F: (301) 903-8520 E: Email Us Project Construction Photos Completed Projects Print Text

    20. Hanford Site Technology Completes Cleanup to Protect Groundwater |

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

      Department of Energy Technology Completes Cleanup to Protect Groundwater Hanford Site Technology Completes Cleanup to Protect Groundwater October 17, 2016 - 12:15pm Addthis Equipment used in soil vapor extraction was used to reduce the level of carbon tetrachloride on the Hanford Site. Equipment used in soil vapor extraction was used to reduce the level of carbon tetrachloride on the Hanford Site. RICHLAND, Wash. - Regulators have approved the completion of a cleanup project on the Hanford

    1. Level-2 Milestone 5213. CTS-1 Contract Award Completed

      SciTech Connect (OSTI)

      Leininger, Matt

      2015-09-24

      This report documents the fact that the first commodity technology (CT) system contract award, CTS-1, has been completed. The description of the milestone is: Based on Tri-Lab CTS-1 process and review, LLNL successfully awards the procurement for the next-generation Tri-Lab Linux CTS-1. The milestone completion criterion is: Signed contract. The milestone was completed on September 24th. 2015.

    2. Princeton Plasma Physics Laboratory achieves milestone, completing first

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

      part of heart of fusion experiment | Princeton Plasma Physics Lab Princeton Plasma Physics Laboratory achieves milestone, completing first part of heart of fusion experiment By John Greenwald March 22, 2013 Tweet Widget Google Plus One Share on Facebook The completed first section of the NSTX-U center stack. (Photo by Elle Starkman, PPPL Office of Communications) The completed first section of the NSTX-U center stack. Gallery: Related Images: Engineers and technicians at the U.S. Department

    3. High power laser workover and completion tools and systems

      DOE Patents [OSTI]

      Zediker, Mark S; Rinzler, Charles C; Faircloth, Brian O; Koblick, Yeshaya; Moxley, Joel F

      2014-10-28

      Workover and completion systems, devices and methods for utilizing 10 kW or more laser energy transmitted deep into the earth with the suppression of associated nonlinear phenomena. Systems and devices for the laser workover and completion of a borehole in the earth. These systems and devices can deliver high power laser energy down a deep borehole, while maintaining the high power to perform laser workover and completion operations in such boreholes deep within the earth.

    4. Multizone subsea completions in the Dai Hung field, Vietnam

      SciTech Connect (OSTI)

      Lay, K.R.

      1996-09-01

      The early production phase of the Dai Hung field development resulted in the drilling and completion of five subsea wells. Because of the complex nature of the reservoirs, selective multizone completions were installed for effective reservoir data acquisition and reservoir management. The downhole completion designs used equipment that was primarily of existing proven design and downhole equipment installation was successfully achieved in a single trip. Ongoing reservoir management will be aided by the use of a subsea wireline system to facilitate data acquisition.

    5. Brief: Multizone subsea completions in the Dai Hung field, Vietnam

      SciTech Connect (OSTI)

      Lay, K.R.

      1996-04-01

      The early production phase of the Dai Hung field development involved drilling and completion of five subsea wells. Owing to the complex nature of the reservoirs, selective multizone completions were installed for effective reservoir data acquisition and reservoir management. Downhole completion designs used equipment that was primarily of existing proven design, and downhole equipment was installed in a single trip. Ongoing reservoir management will be aided by use of a subsea wireline system to facilitate data acquisition.

    6. SRS Recovery Act Completes Major Lower Three Runs Project Cleanup |

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

      Department of Energy Recovery Act Completes Major Lower Three Runs Project Cleanup SRS Recovery Act Completes Major Lower Three Runs Project Cleanup American Recovery and Reinvestment Act can now claim that 85 percent of the Savannah River Site (SRS) has been cleaned up with the recent completion of the Lower Three Runs (stream) Project. Twenty miles long, Lower Three Runs leaves the main body of the 310-square mile site and runs through parts of Barnwell and Allendale Counties until it

    7. Hampton University Scientists Complete Historic Experiment | Jefferson Lab

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

      Scientists Complete Historic Experiment Hampton University Scientists Complete Historic Experiment Two experiments recently completed at the Department of Energy's (DOE) Thomas Jefferson National Accelerator Facility (Jefferson Lab) will put scientists one step closer toward understanding the world we live in. The experiments used Jefferson Lab's high energy accelerator and experimental equipment to produce kaons [pronounced Ka- onz], subatomic particles made of quarks, that have puzzled

    8. NNSA Successfully Completes W87 Refurbishment | National Nuclear Security

      National Nuclear Security Administration (NNSA)

      Administration | (NNSA) Successfully Completes W87 Refurbishment NNSA Successfully Completes W87 Refurbishment Amarillo TX NNSA announced the successful completion at the Pantex Plant outside of Amarillo, Texas, of efforts to refurbish the W87 nuclear warhead and extend its life by 30 years. This marks the end of the first leg of NNSA's program to ensure that the nation's aging nuclear weapons stockpile is capable of meeting national defense requirements without producing new warheads or

    9. DOE completes demolition of K-31 gaseous diffusion building

      Energy.gov [DOE]

      Demolition of the K‐31 Building at ETTP was completed today, marking the removal of the fourth of five gaseous diffusion buildings at the former uranium enrichment site.

    10. Going completely renewable: is it possible (let alone desirable)?

      SciTech Connect (OSTI)

      Sovacool, Benjamin K.; Watts, Charmaine

      2009-05-15

      With the right mix of leadership and policy, a completely renewable electricity sector for New Zealand and the United States is feasible, achievable, and desirable. (author)

    11. Microsoft Word - Completion of an Evalution of Impact of Loss...

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

      of Completion of an Evaluation of the Impact of the Loss of Two Hydrogen and Methane Monitoring Sampling Lines Dear Mr. Bearzi: As required under Permit Condition...

    12. Sandia Energy - SPIDERS Completed Its Phase 1 Operational Demonstratio...

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

      Grid Integration News & Events Research & Capabilities SMART Grid Energy Assurance Microgrid SPIDERS Completed Its Phase 1 Operational Demonstration in Late January Previous...

    13. Major Milestone: PPPL completes first quadrant of the heart of...

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

      preparations and close teamwork. (Photo by Elle Starkman, PPPL Office of Communications) Mission accomplished: The completed first section of the NSTX-U center stack capped months...

    14. Pantex Wind Farm Complete | National Nuclear Security Administration...

      National Nuclear Security Administration (NNSA)

      Pantex Wind Farm Complete June 18, 2014 Lt. Gen. (Ret.) Frank G. Klotz, Under Secretary ... largest federally owned wind farm Tuesday at the Pantex Plant near Amarillo, Texas. ...

    15. Energy Department Completes Cool Roof Installation on DC Headquarters...

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

      Headquarters Building to Save Money by Saving Energy Energy Department Completes Cool Roof Installation on DC Headquarters Building to Save Money by Saving Energy December 14, ...

    16. EM's Paducah Site Completes Building Removals | Department of...

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

      PADUCAH, Ky. - EM recently completed demolition of the last of 32 inactive facilities to be removed as part of the cleanup scope that existed before commercial uranium enrichment ...

    17. Raft River Geothermal Exploratory Hole No. 1 (RRGE-1). Completion...

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

      report Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Raft River Geothermal Exploratory Hole No. 1 (RRGE-1). Completion report Abstract GEOTHERMAL...

    18. NNSA celebrates completion of UPF project on time, under budget...

      National Nuclear Security Administration (NNSA)

      NNSA recently celebrated the successful completion of the Uranium Processing Facility site ... UPF will replace the hub of the nation's uranium processing operations. Read more. NNSA ...

    19. Certification of Completion of Level-2 Milestone 405: Deploy...

      Office of Scientific and Technical Information (OSTI)

      Environment Citation Details In-Document Search Title: Certification of Completion of Level-2 Milestone 405: Deploy Next-Generation Data Management and Analysis Environment ...

    20. Oak Ridge Environmental Management Program Completes Work at...

      Energy.gov (indexed) [DOE]

      program recently completed upgrades and soil remediation work at the Bethel Valley ... and 3. This included removing contaminated soil ("hot spots"), diverting clean groundwater ...

    1. NNSA Applauds Y-12 for Completing Potable Water Project Ahead...

      National Nuclear Security Administration (NNSA)

      Applauds Y-12 for Completing Potable Water Project Ahead of Schedule and Under Budget September 11, 2010 Microsoft Office document icon R-9-10.doc

    2. Completed Projects Table 2015-08-21.xlsx

      Office of Environmental Management (EM)

      Completed Projects 2005-Present Approved Actual Soil and Water Remediation Soil and Water Remediation ANLE-0030 a 28 30 2007 2007 Yes Yes Yes Nuclear Facility Deactivation and...

    3. Coiled tubing completions: An economic discussion of procedures

      SciTech Connect (OSTI)

      Courville, P.W.; Clark, T.R.

      1995-11-01

      The introduction of 2- to 3 {1/2}-in. coiled tubing (CT) sizes provides economical alternative completion opportunities for both new and existing wells. Smaller diameters of CT can also be incorporated into completion designs on existing tubular completions for rigless workovers. This paper will discuss the evaluation method for CT completions in relatively low bottom-hole pressure wells in a non-hostile environment. It will concentrate on two major methods of artificial lift: (1) the use of electric submersible pumps (ESPs) on new wells or (2) the use of gas lift methods to extend the production life of existing wells.

    4. NNSA and Bulgaria partner to complete nuclear detection architecture...

      National Nuclear Security Administration (NNSA)

      Library Press Releases NNSA and Bulgaria partner to complete nuclear detection ... Sofia, Bulgaria - Representatives of the Department of Energy's National Nuclear Security ...

    5. JOBAID-COMPLETING AN EXTERNAL TRAINING REQUEST (SF-182)

      Energy.gov [DOE]

      The purpsoe of this job aid is to guide users through the step-by-step process of completing an external training request form (SF-182).

    6. Fort Rucker UESC Energy Conservation Project, Completed Dec....

      Office of Environmental Management (EM)

      ... in FY15 38 Fort Rucker UESC Energy Conservation Project Completed Dec. 2014 Hosted by: ... low finance rates to maximize energy conservation goals - A "budget neutral" project ...

    7. Certification of Completion of Level-2 Milestone 405: Deploy...

      Office of Scientific and Technical Information (OSTI)

      Data Management and Analysis Environment Citation Details In-Document Search Title: Certification of Completion of Level-2 Milestone 405: Deploy Next-Generation Data Management and ...

    8. Project Completion/Closeout Guide - DOE Directives, Delegations...

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

      6A, Project CompletionCloseout Guide by Brian Huizenga Functional areas: Program Management, Program Planning and Management, Project Management The guide provides nonmandatory...

    9. Quasi-two-dimensional electron gas at the epitaxial alumina/SrTiO{sub 3} interface: Control of oxygen vacancies

      SciTech Connect (OSTI)

      Kormondy, Kristy J.; Posadas, Agham B.; Demkov, Alexander A.; Ngo, Thong Q.; Ekerdt, John G.; Lu, Sirong; Smith, David J.; McCartney, Martha R.; Goble, Nicholas; Gao, Xuan P. A.; Jordan-Sweet, Jean

      2015-03-07

      In this paper, we report on the highly conductive layer formed at the crystalline γ-alumina/SrTiO{sub 3} interface, which is attributed to oxygen vacancies. We describe the structure of thin γ-alumina layers deposited by molecular beam epitaxy on SrTiO{sub 3} (001) at growth temperatures in the range of 400–800 °C, as determined by reflection-high-energy electron diffraction, x-ray diffraction, and high-resolution electron microscopy. In situ x-ray photoelectron spectroscopy was used to confirm the presence of the oxygen-deficient layer. Electrical characterization indicates sheet carrier densities of ∼10{sup 13 }cm{sup −2} at room temperature for the sample deposited at 700 °C, with a maximum electron Hall mobility of 3100 cm{sup 2}V{sup −1}s{sup −1} at 3.2 K and room temperature mobility of 22 cm{sup 2}V{sup −1}s{sup −1}. Annealing in oxygen is found to reduce the carrier density and turn a conductive sample into an insulator.

    10. First Principles Calculations of Oxygen Vacancy Formation and Migration in Ba1?xSrxCo1?yFeyO3?? Perovskites

      SciTech Connect (OSTI)

      Merkle, Rotraut; Mastrikov, Yuri; Kotomin, Eugene Alexej; Kukla, Maija M.; Maier, Joachim

      2011-12-28

      Based on first principles DFT calculations, we analyze oxygen vacancy formation and migration energies as a function of chemical composition in complex multicomponent (Ba,Sr)(Co,Fe)O3?? perovskites which are candidate materials for SOFC cathodes and permeation membranes. The atomic relaxation, electronic charge redistribution and energies of the transition states of oxygen migration are compared for several perovskites to elucidate the atomistic reason for the exceptionally low migration barrier in Ba0.5Sr0.5Co0.8Fe0.2O3?? that was previously determined experimentally. The critical comparison of Ba1?xSrxCo1?yFeyO3?? perovskites with different cation compositions and arrangements shows that in addition to the geometric constraints the electronic structure plays a considerable role for the height of the oxygen migration barrier in these materials. These findings help understand advantages and limitations of the fast oxygen permeation and exchange properties of Ba0.5Sr0.5Co0.8Fe0.2O3??.

    11. Inhomogeneous broadening and peak shift of the 7.6 eV optical absorption band of oxygen vacancies in SiO{sub 2}

      SciTech Connect (OSTI)

      Kajihara, Koichi; Skuja, Linards; Hosono, Hideo

      2014-10-21

      The peak parameters of radiation-induced 7.6 eV optical absorption band of oxygen vacancies (Si-Si bonds) were examined for high-purity synthetic α-quartz and amorphous SiO{sub 2} (a‐SiO{sub 2}) exposed to {sup 60}Co γ-rays. The peak shape is asymmetric with the steeper edge at the lower energy side both in α-quartz and a‐SiO{sub 2}, and the peak energy is larger for α-quartz than that for a‐SiO{sub 2}. The full width at half maximum for a‐SiO{sub 2} is larger by ∼40-60% than that for α-quartz, and it increases with an increase in the disorder of the a‐SiO{sub 2} network, which is enhanced by raising the temperature of preannealing before irradiation, i.e., fictive temperature. These data are interpreted from the viewpoint of the site-to-site distribution of the Si-Si bond length in a‐SiO{sub 2}.

    12. Localization of vacancies and mobility of lithium ions in Li{sub 2}ZrO{sub 3} as obtained by {sup 6,7}Li NMR

      SciTech Connect (OSTI)

      Baklanova, Ya. V., E-mail: baklanovay@ihim.uran.ru [Institute of Solid State Chemistry, Ural Branch of the Russian Academy of Sciences, 91 Pervomaiskaya str., 620990 Ekaterinburg (Russian Federation); Arapova, I. Yu.; Buzlukov, A.L.; Gerashenko, A.P.; Verkhovskii, S.V.; Mikhalev, K.N. [Institute of Metal Physics, Ural Branch of the Russian Academy of Sciences, 18 Kovalevskaya str., 620990 Ekaterinburg (Russian Federation); Denisova, T.A.; Shein, I.R.; Maksimova, L.G. [Institute of Solid State Chemistry, Ural Branch of the Russian Academy of Sciences, 91 Pervomaiskaya str., 620990 Ekaterinburg (Russian Federation)

      2013-12-15

      The {sup 6,7}Li NMR spectra and the {sup 7}Li spinlattice relaxation rate were measured on polycrystalline samples of Li{sub 2}ZrO{sub 3}, synthesized at 1050 K and 1300 K. The {sup 7}Li NMR lines were attributed to corresponding structural positions of lithium Li1 and Li2 by comparing the EFG components with those obtained in the first-principles calculations of the charge density in Li{sub 2}ZrO{sub 3}. For both samples the line width of the central {sup 7}Li transition and the spinlattice relaxation time decrease abruptly at the temperature increasing above ?500 K, whereas the EFG parameters are averaged (??{sub Q}?=42 (5) kHz) owing to thermally activated diffusion of lithium ions. - Graphical abstract: Path of lithium ion hopping in lithium zirconate Li{sub 2}ZrO{sub 3}. - Highlights: Polycrystalline samples Li{sub 2}ZrO{sub 3} with monoclinic crystal structure synthesized at different temperatures were investigated by {sup 6,7}Li NMR spectroscopy. Two {sup 6,7}Li NMR lines were attributed to the specific structural positions Li1 and Li2. The distribution of vacancies was clarified for both lithium sites. The activation energy and pathways of lithium diffusion in Li{sub 2}ZrO{sub 3} were defined.

    13. United States National Hydrogen Fuel Cell Vehicle and Infrastructure Learning Demonstration - Status and Results (Presentation)

      SciTech Connect (OSTI)

      Wipke,K.; Sprik, S.; Kurtz, J.; Ramsden, T.; Garbak, J.

      2009-03-06

      This presentation provides status and results for the United States National Hydrogen Fuel Cell Vehicle Learning Demonstration, including project objectives, partners, the National Renewable Energy Laboratory's role in the project and methodology, how to access complete results, and results of vehicle and infrastructure analysis.

    14. The status of energy planning in five Central American countries

      SciTech Connect (OSTI)

      Booth, S.R.; Fonseca, M.G.

      1991-08-01

      This report examines the current status of national energy planning in Costa Rica, El Salvador, Guatemala, Honduras, and Panama. A framework is provided that divides energy planning activities into two broad categories: the fundamental tasks'' and the bounding conditions.'' The fundamental tasks of energy planning include the gathering and systematizing of data, conducting energy situation analyses and short- or long-term planning for the country, and defining and implementing national energy plans. While the bonding conditions are situations that preclude completion of fundamental tasks, such as level of technical expertise. 20 refs., 11 figs., 2 tabs.

    15. Status Update on WIPP Restart

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

      Waste Handling and Radiological Control personnel discuss a waste handling procedure during a recent Cold Operations training evolution. WIPP UPDATE: July 15, 2016 Status Update on WIPP Restart Workers at the Waste Isolation Pilot Plant (WIPP) are now well into the second month of Cold Operations at the facility and while significant progress has been made, much remains to be accomplished in order to meet the December 2016 projected timeframe for restarting transuranic waste operations. In

    16. KTM Experimental Complex Project Status

      SciTech Connect (OSTI)

      Tazhibayeva, I.L.; Azizov, E.A.; Krylov, V.A.; Shkolnik, V.S.; Velikhov, E.P.; Obysov, N.A.; Tukhvatulin, Sh.T.; Tikhomirov, L.N.; Shestakov, V.P.; Filatov, O.G

      2005-04-15

      A review of KTM experimental complex project status, which is aimed the creation of a Kazakhstani spherical tokamak for study and tests materials and components of future fusion reactors. Revised basic parameters of the KTM facility and ground of the changes taking into account new plasma core geometry, new design of vacuum chamber and modified magnetic system, transport sluice and movable divertor devices, and additional RF-heating system are presented here.

    17. SuperNEMO Project Status

      SciTech Connect (OSTI)

      Chauveau, E. [Universite de Bordeaux, Centre d'Etudes Nucleaires de Bordeaux Gradignan, UMR 5797, F-33175 Gradignan (France) and CNRS/IN2P3, Centre d'Etudes Nucleaires de Bordeaux Gradignan, UMR 5797, F-33175 Gradignan (France)

      2009-11-09

      The SuperNEMO experiment aims to reach a sensitivity up to 10{sup 26} years on the half-life of neutrinoless double beta decay. The chosen way is to build a 'tracko-calo' detector with at least 100 kg of betabeta isotope. The current status of the main R and D tasks will be presented: enrichment and production of source foil, radiopurity control, tracker and calorimeter.

    18. Development Status of The ILC Marx Modulator

      SciTech Connect (OSTI)

      Nguyen, M; Beukers, T.; Burkhart, C.; Larsen, R.; Olsen, J.; Tang, T.; /SLAC

      2010-06-07

      The ILC Marx Modulator is under development as a lower cost alternative to the 'Baseline Conceptual Design' (BCD) klystron modulator. Construction of a prototype Marx is complete and testing is underway at SLAC. The Marx employs solid state elements, IGBTs and diodes, to control the charge, discharge and isolation of the modules. The prototype is based on a stack of sixteen modules, each initially charged to {approx}11 kV, which are arranged in a Marx topology. Initially, eleven modules combine to produce the 120 kV output pulse. The remaining modules are switched in after appropriate delays to compensate for the voltage droop that results from the discharge of the energy storage capacitors. Additional elements will further regulate the output voltage to {+-}0.5%. The Marx presents several advantages over the conventional klystron modulator designs. It is physically smaller; there is no pulse transformer (quite massive at these parameters) and the energy storage capacitor bank is quite small, owing to the active droop compensation. It is oil-free; voltage hold-off is achieved using air insulation. It is air cooled; the secondary air-water heat exchanger is physically isolated from the electronic components. This paper outlines the current developmental status of the prototype Marx. It presents a detailed electrical and mechanical description of the modulator and operational test results. It will discuss electrical efficiency measurements, fault testing, and output voltage regulation.

    19. Development Status of the ILC Marx Modulator

      SciTech Connect (OSTI)

      Nguyen, M.; Beukers, T.; Burkhart, C.; Larsen, R.; Olsen, J.; Tang, T.; /SLAC

      2008-06-16

      The ILC Marx Modulator is under development as a lower cost alternative to the 'Baseline Conceptual Design' (BCD) klystron modulator. Construction of a prototype Marx is complete and testing is underway at SLAC. The Marx employs solid state elements, IGBTs and diodes, to control the charge, discharge and isolation of the modules. The prototype is based on a stack of sixteen modules, each initially charged to {approx}11 kV, which are arranged in a Marx topology. Initially, eleven modules combine to produce the 120 kV output pulse. The remaining modules are switched in after appropriate delays to compensate for the voltage droop that results from the discharge of the energy storage capacitors. Additional elements will further regulate the output voltage to {+-} 0.5%. The Marx presents several advantages over the conventional klystron modulator designs. It is physically smaller; there is no pulse transformer (quite massive at these parameters) and the energy storage capacitor bank is quite small, owing to the active droop compensation. It is oil-free; voltage hold-off is achieved using air insulation. It is air cooled; the secondary air-water heat exchanger is physically isolated from the electronic components. This paper outlines the current developmental status of the prototype Marx. It presents a detailed electrical and mechanical description of the modulator and operational test results. It will discuss electrical efficiency measurements, fault testing, and output voltage regulation.

    20. Status and Future of TRANSCOM | Department of Energy

      Office of Environmental Management (EM)

      and Future of TRANSCOM Status and Future of TRANSCOM Current Program Status Upcoming Changes Glimpse at Future Options DOE Commitments PDF icon Status and Future of TRANSCOM More...

    1. Correlation between the electronic and atomic structure, transport properties, and oxygen vacancies on La{sub 0.7}Ca{sub 0.3}MnO{sub 3} thin films

      SciTech Connect (OSTI)

      Rubio-Zuazo, J. Onandia, L.; Castro, G. R.

      2014-01-13

      We present a study of the role of oxygen vacancies on the atomic and electronic structure and transport properties on a 20?nm thick La{sub 0.7}Ca{sub 0.3}MnO{sub 3} film grown by the pulsed laser deposition method on a SrTiO{sub 3} (001) substrate. The results show that oxygen vacancies induce an atomic structure modification characterized by the movement of the La/Ca cations to the perovskite regular position, by the reduction of the MnO{sub 6} basal plane rotation, and by a cooperative tilting of the octahedra along the out-of-plane direction. The out-of-plane lattice parameter increases due to the reduction of the Mn valence upon oxygen vacancies creation. As a consequence, a shift of the Metal-to-Insulator transition to lower temperatures is found to occur. We discuss the influence of the competitive phenomena of manganese valence and Mn-O-Mn bond distortion on the transport properties of manganite thin films.

    2. Status

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

      WTS - WIPP Carlsbad, NM CWI - Idaho Cleanup Project (ICP) WVES - Interim Ends State ... or other facilities at Sandia National Labs in Albuquerque, between 1952 and 1980. ...

    3. Uranium Processing Facility Site Readiness Subproject Completed on Time and

      National Nuclear Security Administration (NNSA)

      Under Budget | National Nuclear Security Administration | (NNSA) Uranium Processing Facility Site Readiness Subproject Completed on Time and Under Budget March 13, 2015 The Uranium Processing Facility (UPF) project celebrates its first major milestone with the completion of site readiness work, delivered on time and under budget. File 2015-03-13 NPO

    4. STEP 1: TO BE COMPLETED BY ALCOHOL TECHNICIAN

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

      7 (05-2016) OMB Control No. 1910-5122 U.S. Department of Energy (DOE) Human Reliability Program (HRP) Alcohol Testing (Instructions for completing this form are attached.) STEP 1: TO BE COMPLETED BY ALCOHOL TECHNICIAN A. Employee Name __________________________________________________________________ (Print) First M.I. Last B. Employee ID No. __________________________________________________________ C. Employer Name __________________________________________________________

    5. Specialized equipment enabled completions with large coiled tubing

      SciTech Connect (OSTI)

      Taylor, R.W.; Conrad, B.

      1996-02-19

      Specialized equipment enabled successful well completions in Oman with large 3{1/2}-inch coiled tubing. Conventional drilling or completion rigs were not needed. Although the use of 3{1/2}-inch coiled tubing to complete wells is relatively new, it is gaining widespread industry application. One Middle East operating company felt that if downhole completion equipment could be successfully run using coiled tubing, greater cost efficiency, both in initial deployment and in maintenance, could be derived. The paper lists some of the technical considerations for these assumptions. The long-term advantages regarding production and well maintenance cannot yet be determined, but experience in Oman has confirmed the belief that large coiled tubing completions can be technically achieved.

    6. Apparatus for the concurrent ultrasonic inspection of partially completed welds

      DOE Patents [OSTI]

      Johnson, John A.

      2000-01-01

      An apparatus for the concurrent nondestructive evaluation of partially completed welds is described and which is used in combination with an automated welder and which includes an ultrasonic signal generator mounted on the welder and which generates an ultrasonic signal which is directed toward one side of the partially completed welds; an ultrasonic signal receiver mounted on the automated welder for detecting ultrasonic signals which are transmitted by the ultrasonic signal generator and which are reflected or diffracted from one side of the partially completed weld or which passes through a given region of the partially completed weld; and an analysis assembly coupled with the ultrasonic signal receiver and which processes the ultrasonic signals received by the ultrasonic signal receiver to identify welding flaws in the partially completed weld.

    7. EIA Completes Corrections to Drilling Activity Estimates Series

      Reports and Publications

      1999-01-01

      The Energy Information Administration (EIA) has published monthly and annual estimates of oil and gas drilling activity since 1978. These data are key information for many industry analysts, serving as a leading indicator of trends in the industry and a barometer of general industry status.

    8. Case studies from Oman for coiled tubing deployed completion techniques

      SciTech Connect (OSTI)

      Taylor, R.W.; Conrad, B.

      1996-09-01

      Although the use of ultra-large coiled tubing to complete wells is relatively new, it is gaining widespread industry application. This paper will detail the equipment necessary to perform an operation of this type and will present information from several case studies in Oman in which an operator has successfully deployed completion equipment on 3-1/2-inch-OD coiled tubing. In addition to a discussion of the equipment required to perform the necessary operations, the trial parameters that were established by this operator will be given. The information presented has been selected to allow an initial evaluation to be made of coiled tubing completions in general and will help to determine whether this method can prove to be less expensive than traditional rig-based completions. The topics presented have been chosen to provide the reader with a thorough understanding of the techniques and preparation needed to execute a coiled tubing completion. The summary of experiences will conclude that this innovative completion technique can be a viable method for completing wells. Although long-term advantages regarding production and well maintenance cannot yet be determined, the operator`s experiences to date have confirmed his initial belief that use of coiled tubing in ultra-large continuous-pipe applications can be cost effective.

    9. Status of LLNL granite projects

      SciTech Connect (OSTI)

      Ramspott, L.D.

      1980-12-31

      The status of LLNL Projects dealing with nuclear waste disposal in granitic rocks is reviewed. This review covers work done subsequent to the June 1979 Workshop on Thermomechanical Modeling for a Hardrock Waste Repository and is prepared for the July 1980 Workshop on Thermomechanical-Hydrochemical Modeling for a Hardrock Waste Repository. Topics reviewed include laboratory determination of thermal, mechanical, and transport properties of rocks at conditions simulating a deep geologic repository, and field testing at the Climax granitic stock at the USDOE Nevada Test Site.

    10. State building energy codes status

      SciTech Connect (OSTI)

      1996-09-01

      This document contains the State Building Energy Codes Status prepared by Pacific Northwest National Laboratory for the U.S. Department of Energy under Contract DE-AC06-76RL01830 and dated September 1996. The U.S. Department of Energy`s Office of Codes and Standards has developed this document to provide an information resource for individuals interested in energy efficiency of buildings and the relevant building energy codes in each state and U.S. territory. This is considered to be an evolving document and will be updated twice a year. In addition, special state updates will be issued as warranted.

    11. US/UK Loan Account Project Status PMOD477

      SciTech Connect (OSTI)

      Stevens, Patrice A.

      2012-07-12

      The viewgraphs describe the status of PMOD477 for LANL. The meeting will occur at DOE-HQ with NA-11 and Military Applications personnel in attendance. Serves to repatriate material with a balance to zero by December 2012. Phase 1 -- Establish formality of operations for War Reserve (WR): Complete surrogate taskings to A90 through a Materials Channel and perform US/UK lessons learned; Complete the US/UK agreed Quality Acceptance Plan, Materials Plan, Shipping procedure, and establish the formal UK/US point of contacts. Phase 2 -- Metal Manufacture (WR): Process material and store material as electrorefined metal (ER) rings, with initial assay and isotopic analysis, prior to manufacturing. Material is cast into accepted configuration and appropriate acceptance document for each aliquot will be generated. Phase 3 -- Intermediate Material Manufacture, Packaging and Shipping (WR): Continue processing of the material in accepted configuration with appropriate acceptance documentation for each aliquot. Provide an initial tasking of the material owed to UK including appropriate quality acceptance documentation. Phase 4 -- Complete Tasking (WR). Phase 5 -- Residue Processing (Non-WR): Complete processing of residue material and waste into accepted configuration with appropriate acceptance document for disposal.

    12. Energy Department Completes K-25 Gaseous Diffusion Building Demolition |

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

      Department of Energy Completes K-25 Gaseous Diffusion Building Demolition Energy Department Completes K-25 Gaseous Diffusion Building Demolition December 19, 2013 - 12:00pm Addthis K-25 Demolition - Oak Ridge 2013 K-25 Demolition - Oak Ridge 2013 Media Contacts Ben Williams, DOE, (865) 574-4912 Wayne McKinney, UCOR, (865) 576-6284 Oak Ridge, Tenn. - Today, the Department of Energy announced that its contractor URS|CH2M Oak Ridge, LLC, or UCOR, has completed demolition of the K-25 gaseous

    13. Inspection apparatus for evaluating a partially completed weld

      DOE Patents [OSTI]

      Smartt, Herschel B.; Larsen, Eric D.; Johnson, Jonn A.

      2001-01-01

      An inspection apparatus for evaluating a partially completed weld is described and which is utilized in combination with an automated movable welder which moves across a supporting surface, and wherein the inspection apparatus includes a coupling member mounted on the welder; a frame member mounted on the coupling member; an ultrasonic sensor mounted on the frame member and disposed in ultrasonic sound transmitting relation relative to the partially completed weld; and a drive assembly for adjusting the position of the ultrasonic sensor relative to the partially completed weld.

    14. Calabi-Yau metrics for quotients and complete intersections

      DOE PAGES-Beta [OSTI]

      Braun, Volker; Brelidze, Tamaz; Douglas, Michael R.; Ovrut, Burt A.

      2008-05-22

      We extend previous computations of Calabi-Yau metrics on projective hypersurfaces to free quotients, complete intersections, and free quotients of complete intersections. In particular, we construct these metrics on generic quintics, four-generation quotients of the quintic, Schoen Calabi-Yau complete intersections and the quotient of a Schoen manifold with Z₃ x Z₃ fundamental group that was previously used to construct a heterotic standard model. Various numerical investigations into the dependence of Donaldson's algorithm on the integration scheme, as well as on the Kähler and complex structure moduli, are also performed.

    15. U.S. Geothermal Announces Successful Completion | Department of Energy

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

      U.S. Geothermal Announces Successful Completion U.S. Geothermal Announces Successful Completion July 10, 2008 - 3:45pm Addthis BOISE, Idaho - July 10, 2008 (AMEX: HTM, TSX: GTH) U.S. Geothermal Inc. ("U.S. Geothermal"), a renewable energy company focused on the production of electricity from geothermal energy, announced today that the first full size production well (NHS-1) at the Neal Hot Springs Project was successfully completed on May 23 and an initial flow test confirms the

    16. Property:NEPA Completion Notes | Open Energy Information

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

      eset-345kv-transmission-line-project-north B BLM-NV-WN-ES-08-01-1310, NV-020-08-01 + 82: Data reviewed for completion Barren Ridge Renewable Transmission + LADWP Project Website:...

    17. K-25 West Wing Demolition Completed | Department of Energy

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

      K-25 West Wing Demolition Completed January 28, 2010 - 12:00pm Addthis OAK RIDGE, Tenn. - Thirteen months after demolition began, the final unit of the K-25 Building West ...

    18. Recovery Act Workers Complete Environmental Cleanup of Coal Ash...

      Office of Environmental Management (EM)

      Site (SRS) recently cleaned up a 17- acre basin containing coal ash residues from Cold War ... Recovery Act Workers Complete Environmental Cleanup of Coal Ash Basin U.S. Depar tment of ...

    19. Completed Recovery Act Project Gives Y-12 New Look

      Energy.gov [DOE]

      Y-12 completes Biolody Complex demolition project three months ahead of schedule. The $26.5 million project removed four of the seven buildings from the complex, and it helped modernize the site through much-needed footprint reduction.

    20. Recovery Act Workers Complete Environmental Cleanup of Coal Ash Basin

      Energy.gov [DOE]

      The Savannah River Site (SRS) recently cleaned up a 17-acre basin containing coal ash residues from Cold War operations. The American Recovery and Reinvestment Act project was safely completed at a...

    1. Raft River Geothermal Exploratory Hole No. 2, RRGE-2. Completion...

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

      report Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: Raft River Geothermal Exploratory Hole No. 2, RRGE-2. Completion report Abstract The Raft...

    2. 2010sr27[cooling_tower_complete].doc

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

      ames-r.giusti@srs.gov Paivi Nettamo, SRNS, (803) 952-6938 paivi.nettamo@srs.gov K Cooling Tower Project Reaches Completion Aiken, S.C. - One of the most visual milestones of...

    3. EM's Richland Operations Office Completes Chromium Cleanup along Columbia River

      Energy.gov [DOE]

      RICHLAND, Wash. – EM’s Richland Operations Office and cleanup contractor Washington Closure Hanford have completed cleanup of chromium-contaminated soil along the Columbia River at the Hanford Site.

    4. LM Completes X-Ray Film Digitization Project

      Energy.gov [DOE]

      The U.S. Department of Energy (DOE) Office of Legacy Management (LM) has successfully completed a project to digitize nearly 400,000 medical x‑rays of former DOE contractor employees.

    5. U.S. Geothermal Announces Successful Completion of First Well...

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

      Hot Springs Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: U.S. Geothermal Announces Successful Completion of First Well at Neal Hot Springs Abstract...

    6. U.S. Geothermal Completes Second Successful Production Well at...

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

      Project Jump to: navigation, search OpenEI Reference LibraryAdd to library Report: U.S. Geothermal Completes Second Successful Production Well at Neal Hot Springs Project...

    7. Complete genome sequence of Pedobacter heparinus type strain...

      Office of Scientific and Technical Information (OSTI)

      available data about this species are based on a sole strain that was isolated from dry soil. Here we describe the features of this organism, together with the complete genome...

    8. Second Panel of Disposal Rooms Completed in WIPP Underground

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

      Crews working in two shifts completed mining Panel 2 weeks ahead of schedule and under ... In accordance with WIPP's design, Panel 2 is identical in layout to Panel 1. Mining of ...

    9. DOE Completes $17 Million Loan Guarantee for New York Energy...

      Energy Savers

      17 Million Loan Guarantee for New York Energy Storage System with Recovery Act Funds DOE Completes 17 Million Loan Guarantee for New York Energy Storage System with Recovery Act ...

    10. NNSA Completes its Critical Radar Arming and Fuzing Test for...

      National Nuclear Security Administration (NNSA)

      and Fuzing Test for the W88 ALT 370 September 25, 2014 WASHINGTON, D.C. - The National Nuclear Security Administration (NNSA) recently completed an important test for the W88 ...

    11. Transition for Pantex and Y-12 Contract Completed | National...

      National Nuclear Security Administration (NNSA)

      Transition for Pantex and Y-12 Contract Completed July 01, 2014 The National Nuclear ... one of the largest and most complex contract transitions in the history of the U.S. ...

    12. Workers Complete Demolition at Historic Los Alamos Site

      Energy.gov [DOE]

      LOS ALAMOS, N.M. – A team lead by the Environmental Management Los Alamos Field Office recently completed demolition of a building at a historic Los Alamos site.

    13. June 30, 2008: US portion of Large Hadron Collider completed

      Energy.gov [DOE]

      June 30, 2008The Department and the National Science Foundation announce that the U.S. contribution to the Large Hadron Collider (LHC) has been completed on budget and ahead of schedule. The LHC,...

    14. Energy Secretary Announces Completion of W62 Dismantlement Program...

      National Nuclear Security Administration (NNSA)

      Energy Secretary Announces Completion of W62 Dismantlement Program August 12, 2010 WASHINGTON, D.C. - U.S. Secretary of Energy Steven Chu announced that the Department of Energy's ...

    15. RRC - Geothermal Production Test Completion or Recompletion Report...

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

      Geothermal Production Test Completion or Recompletion Report and Log Form GT-1 Jump to: navigation, search OpenEI Reference LibraryAdd to library Form: RRC - Geothermal Production...

    16. Kansas City Completes Innovative Business Incubator | Department of Energy

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

      Kansas City Completes Innovative Business Incubator Kansas City Completes Innovative Business Incubator The logo for EnergyWorks KC. The Blue Hills Business Center and Contractor Incubator is now open! This Kansas City, Missouri, center has been a collaborative effort between EnergyWorks KC, Greater Kansas City Local Initiatives Support Corporation, Blue Hills Community Services, and the Green Impact Zone. The partners helped transform this once abandoned building on a brownfield site in the

    17. Governor to Join Jefferson Lab in Celebrating Completion of Accelerator

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

      Upgrade Construction | Jefferson Lab Governor to Join Jefferson Lab in Celebrating Completion of Accelerator Upgrade Construction Governor to Join Jefferson Lab in Celebrating Completion of Accelerator Upgrade Construction CEBAF Race Track This aerial photo shows the outline of the racetrack-shaped CEBAF accelerator at Jefferson Lab in Newport News, Va. NEWPORT NEWS, VA, Sept. 25, 2014 - The Governor of Virginia, Terry McAuliffe, will be the guest speaker at the U.S. Department of Energy's

    18. Nuclear Materials Safeguards and Security Upgrade Project Completed Under

      National Nuclear Security Administration (NNSA)

      Budget | National Nuclear Security Administration | (NNSA) Nuclear Materials Safeguards and Security Upgrade Project Completed Under Budget April 03, 2014 WASHINGTON, D.C. - The National Nuclear Security Administration's (NNSA) Nuclear Materials Safeguards and Security Upgrade Project (NMSSUP) was recently completed approximately $1 million under its original budget of $245 million. NMSSUP upgrades security at Los Alamos National Laboratory's (LANL) Technical Area-55, a facility that houses

    19. Sandia completes major overhaul of key nuclear weapons test facilities |

      National Nuclear Security Administration (NNSA)

      National Nuclear Security Administration | (NNSA) completes major overhaul of key nuclear weapons test facilities Tuesday, May 13, 2014 - 2:46pm Sandia National Laboratories recently completed the renovation of five large-scale test facilities that are crucial to ensuring the safety and reliability of the nation's nuclear weapons systems. The work supports Sandia's ongoing nuclear stockpile modernization work on the B61-12 and W88 Alt, assessments of current stockpile systems, and test and

    20. Security Improvements Project Completed Ahead of Schedule, $20 Million

      National Nuclear Security Administration (NNSA)

      Under Budget | National Nuclear Security Administration | (NNSA) Security Improvements Project Completed Ahead of Schedule, $20 Million Under Budget April 07, 2014 The National Nuclear Security Administration's (NNSA) Security Improvements Project (SIP) was recently completed ahead of schedule and approximately $20 million under its original budget of $72 million. File 2014-04-08 SIP.docx NPO Press Releases September 2016 (1) August 2016 (1) May 2016 (1) February 2016 (1) January 2016 (1)

    1. Security Improvements Project Completed Ahead of Schedule, $20 Million

      National Nuclear Security Administration (NNSA)

      Under Budget | National Nuclear Security Administration | (NNSA) Security Improvements Project Completed Ahead of Schedule, $20 Million Under Budget April 07, 2014 WASHINGTON, D.C. - The National Nuclear Security Administration's (NNSA) Security Improvements Project (SIP) was recently completed ahead of schedule and approximately $20 million under its original budget of $72 million. SIP upgraded security at Y-12 by replacing existing alarm stations and access control systems with Argus, a

    2. Research Portfolio Report Ultra-Deepwater: Drilling and Completion Operations

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

      Ultra-Deepwater: Drilling and Completion Operations Cover images: Photograph of the North Star Imaging M-5000 industrial CT scanner (left) and 3-D renderings of a (10.4 mm) 3 digital subsection of 10% foam quality cement sample (right). Research Portfolio Report Ultra-Deepwater: Drilling and Completion Operations DOE/NETL-2015/1697 Prepared by: Kathy Bruner, Jennifer Funk, and Christine Rueter KeyLogic Systems, Inc. National Energy Technology Laboratory (NETL) Contact: James Ammer

    3. Hanford Site Completes Successful River Corridor Closure Contract

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

      Transition | Department of Energy Completes Successful River Corridor Closure Contract Transition Hanford Site Completes Successful River Corridor Closure Contract Transition October 17, 2016 - 12:05pm Addthis CH2M President and Chief Executive Officer John Ciucci welcomed transitioning employees at an orientation session. CH2M President and Chief Executive Officer John Ciucci welcomed transitioning employees at an orientation session. The IT transition team - Contractors Work Together to

    4. NNSA and Bulgaria partner to complete nuclear detection architecture |

      National Nuclear Security Administration (NNSA)

      National Nuclear Security Administration | (NNSA) Library / Press Releases NNSA and Bulgaria partner to complete nuclear detection architecture October 04, 2016 Fixed and mobile detection systems will prevent smuggling of dangerous radioactive materials Sofia, Bulgaria - Representatives of the Department of Energy's National Nuclear Security Administration (DOE/NNSA), the U.S. Embassy in Sofia, Bulgaria, and the Bulgarian government this week celebrated the completion of Bulgaria's nuclear

    5. Uranium Processing Facility Site Readiness Subproject Completed on Time and

      National Nuclear Security Administration (NNSA)

      Under Budget | National Nuclear Security Administration | (NNSA) Uranium Processing Facility Site Readiness Subproject Completed on Time and Under Budget March 13, 2015 WASHINGTON, D.C.--The Uranium Processing Facility (UPF) project celebrates its first major milestone with the completion of site readiness work, delivered on time and under budget. "UPF is essential to our Nation's uranium mission," said John Eschenberg, UPF Federal Project Director. "Site readiness work sets

    6. EM's Idaho Site Crews Complete Buried Waste Cleanup Accomplishment |

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

      Department of Energy Idaho Site Crews Complete Buried Waste Cleanup Accomplishment EM's Idaho Site Crews Complete Buried Waste Cleanup Accomplishment September 22, 2016 - 2:00pm Addthis An aerial view of the Idaho Site’s Radioactive Waste Management Complex. An aerial view of the Idaho Site's Radioactive Waste Management Complex. Waste exhumation underway at EM's Idaho Site. Waste exhumation underway at EM's Idaho Site. Targeted waste in a drum packaging station for visual examination.

    7. Declaration of Construction Completion and Verification of Readiness to

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

      Test | Department of Energy Declaration of Construction Completion and Verification of Readiness to Test Declaration of Construction Completion and Verification of Readiness to Test Salt Waste Processing Facility, Project No. 05-D-405 Pam Marks, FPD, DOE-SR March 2, 2016 Presentation (10.94 MB) Key Resources Internal DOE Tools PMCDP EVMS PARS IIe FPD Resource Center PM Newsletter Forms and Templates More Documents & Publications Salt Waste Processing Facility, Construction Turnover to

    8. Idaho Workers Complete Last of Transuranic Waste Transfers Funded by

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

      Recovery Act | Department of Energy Workers Complete Last of Transuranic Waste Transfers Funded by Recovery Act Idaho Workers Complete Last of Transuranic Waste Transfers Funded by Recovery Act American Recovery and Reinvestment Act workers successfully transferred 130 containers of remote-handled transuranic waste &ndash; each weighing up to 15 tons &ndash; to a facility for repackaging and shipment to a permanent disposal location. As part of a project funded by $90 million from

    9. EERE Celebrates Completion of 1 Million Weatherized American Homes |

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

      Department of Energy EERE Celebrates Completion of 1 Million Weatherized American Homes EERE Celebrates Completion of 1 Million Weatherized American Homes September 27, 2012 - 10:07am Addthis 1 of 6 David Poindexter with Veterans Green Jobs, puts moisture barrier and insulation into the crawl space of this Lakewood, Colorado, home. This home is part of the Energy Department's Weatherization Assistance Program that supports energy efficiency upgrades to low-income homes in Denver. In

    10. Florida Department of Environmental Protection Issues Completion Orders for

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

      Two Pinellas Sites | Department of Energy Florida Department of Environmental Protection Issues Completion Orders for Two Pinellas Sites Florida Department of Environmental Protection Issues Completion Orders for Two Pinellas Sites October 6, 2016 - 11:00am Addthis What does this project do? Goal 1: Protect human health and the environment In July 2016, the U.S. Department of Energy (DOE) Office of Legacy Management (LM) achieved two key cleanup milestones at the Pinellas County, Florida,

    11. Brookhaven Lab Completes Decommissioning of Graphite Research Reactor:

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

      Reactor core and associated structures successfully removed; waste shipped offsite for disposal | Department of Energy Lab Completes Decommissioning of Graphite Research Reactor: Reactor core and associated structures successfully removed; waste shipped offsite for disposal Brookhaven Lab Completes Decommissioning of Graphite Research Reactor: Reactor core and associated structures successfully removed; waste shipped offsite for disposal September 1, 2012 - 12:00pm Addthis The Brookhaven

    12. Celebrating the Completion of 1 Million Weatherized American Homes |

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

      Department of Energy Celebrating the Completion of 1 Million Weatherized American Homes Celebrating the Completion of 1 Million Weatherized American Homes Addthis 1 of 6 David Poindexter with Veterans Green Jobs, puts moisture barrier and insulation into the crawl space of this Lakewood, Colorado, home. This home is part of the Energy Department's Weatherization Assistance Program that supports energy efficiency upgrades to low-income homes in Denver. In addition, the Department's

    13. Modeling a complete Stirling engine (Journal Article) | DOE PAGES

      Office of Scientific and Technical Information (OSTI)

      Modeling a complete Stirling engine Title: Modeling a complete Stirling engine Authors: Paul, Christopher J. ; Engeda, Abraham Publication Date: 2015-02-01 OSTI Identifier: 1247867 Grant/Contract Number: ER-2215 Type: Publisher's Accepted Manuscript Journal Name: Energy (Oxford) Additional Journal Information: Journal Name: Energy (Oxford); Journal Volume: 80; Journal Issue: C; Related Information: CHORUS Timestamp: 2016-09-28 21:21:06; Journal ID: ISSN 0360-5442 Publisher: Elsevier Sponsoring

    14. Russian Health Studies Program - Overview of Active and Completed Projects

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

      | Department of Energy Overview of Active and Completed Projects Russian Health Studies Program - Overview of Active and Completed Projects How Many Projects Does DOE Sponsor Through This Program? DOE currently sponsors five projects. Of these, four core projects focus on the epidemiology and dosimetry of the Techa River population and the Mayak workers: Project 1.1: Techa River Population Dosimetry; Project 1.2b: Techa River Population Cancer Morbidity and Mortality; Project 2.2: Mayak

    15. Jefferson Lab accelerator upgrade completed: Initial operations set to

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

      begin while experimental equipment upgrades continue | Jefferson Lab accelerator upgrade completed: Initial operations set to begin while experimental equipment upgrades continue Jefferson Lab accelerator upgrade completed: Initial operations set to begin while experimental equipment upgrades continue areial Aerial of Jefferson Lab NEWPORT NEWS, VA, August 12, 2014 - The Department of Energy's Thomas Jefferson National Accelerator Facility ("Jefferson Lab") has just received formal

    16. LANL completes excavation of 1940s waste disposal site

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

      LANL completes excavation LANL completes excavation of 1940s waste disposal site The excavation removed about 43,000 cubic yards of contaminated debris and soil from the six-acre site. September 22, 2011 Workers sample contents of LANL's Material Disposal Area B (MDA-B) before excavation Workers sample contents of LANL's Material Disposal Area B (MDA-B) before excavation. Contact Colleen Curran Communications Office (505) 664-0344 Email LOS ALAMOS, New Mexico, September 22, 2011-Los Alamos

    17. LANL completes high-priority flood and erosion control work

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

      Lab completes priority erosion controls LANL completes high-priority flood and erosion control work Crews installed 600 feet of water diversion barriers and removed more than 1,200 cubic yards of sediment in anticipation of flash flooding. July 11, 2011 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 physics

    18. Successful River Corridor Contractor Completes Extra Work Scope, Saving DOE

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

      $300 Million | Department of Energy Successful River Corridor Contractor Completes Extra Work Scope, Saving DOE $300 Million Successful River Corridor Contractor Completes Extra Work Scope, Saving DOE $300 Million December 17, 2015 - 12:35pm Addthis A recent photo of the N Reactor in its cocooned state looks sharply different than it did in 2005. A recent photo of the N Reactor in its cocooned state looks sharply different than it did in 2005. RICHLAND, Wash. - The River Corridor Closure

    19. Summary of Electrolytic Hydrogen Production: Milestone Completion Report |

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

      Department of Energy Summary of Electrolytic Hydrogen Production: Milestone Completion Report Summary of Electrolytic Hydrogen Production: Milestone Completion Report This report provides an overview of the current state of electrolytic hydrogen production techonologies and an economic analysis of the processes and systems available as of December 2003. 36734.pdf (719.5 KB) More Documents & Publications Current (2009) State-of-the-Art Hydrogen Production Cost Estimate Using Water

    20. Program Evaluation: EERE Planned and Completed Evaluations | Department of

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

      Energy Evaluation » Information Resources » Program Evaluation: EERE Planned and Completed Evaluations Program Evaluation: EERE Planned and Completed Evaluations This section provides a list of past and planned evaluation reports for the U.S. Department of Energy's (DOE) Office of Energy Efficiency and Renewable Energy (EERE). Many of the listed reports are available as downloads. The table below tells you which offices have reports accessible as downloads. A checked box in the table -