Sample records for hafnium 159

  1. Hafnium radioisotope recovery from irradiated tantalum

    DOEpatents

    Taylor, Wayne A.; Jamriska, David J.

    2001-01-01

    Hafnium is recovered from irradiated tantalum by: (a) contacting the irradiated tantalum with at least one acid to obtain a solution of dissolved tantalum; (b) combining an aqueous solution of a calcium compound with the solution of dissolved tantalum to obtain a third combined solution; (c) precipitating hafnium, lanthanide, and insoluble calcium complexes from the third combined solution to obtain a first precipitate; (d) contacting the first precipitate of hafnium, lanthanide and calcium complexes with at least one fluoride ion complexing agent to form a fourth solution; (e) selectively adsorbing lanthanides and calcium from the fourth solution by cationic exchange; (f) separating fluoride ion complexing agent product from hafnium in the fourth solution by adding an aqueous solution of ferric chloride to obtain a second precipitate containing the hafnium and iron; (g) dissolving the second precipitate containing the hafnium and iron in acid to obtain an acid solution of hafnium and iron; (h) selectively adsorbing the iron from the acid solution of hafnium and iron by anionic exchange; (i) drying the ion exchanged hafnium solution to obtain hafnium isotopes. Additionally, if needed to remove residue remaining after the product is dried, dissolution in acid followed by cation exchange, then anion exchange, is performed.

  2. Ablation Resistant Zirconium and Hafnium Ceramics

    NASA Technical Reports Server (NTRS)

    Bull, Jeffrey (Inventor); White, Michael J. (Inventor); Kaufman, Larry (Inventor)

    1998-01-01

    High temperature ablation resistant ceramic composites have been made. These ceramics are composites of zirconium diboride and zirconium carbide with silicon carbide, hafnium diboride and hafnium carbide with silicon carbide and ceramic composites which contain mixed diborides and/or carbides of zirconium and hafnium. along with silicon carbide.

  3. Hafnium isotope stratigraphy of ferromanganese crusts

    PubMed

    Lee; Halliday; Hein; Burton; Christensen; Gunther

    1999-08-13

    A Cenozoic record of hafnium isotopic compositions of central Pacific deep water has been obtained from two ferromanganese crusts. The crusts are separated by more than 3000 kilometers but display similar secular variations. Significant fluctuations in hafnium isotopic composition occurred in the Eocene and Oligocene, possibly related to direct advection from the Indian and Atlantic oceans. Hafnium isotopic compositions have remained approximately uniform for the past 20 million years, probably reflecting increased isolation of the central Pacific. The mechanisms responsible for the increase in (87)Sr/(86)Sr in seawater through the Cenozoic apparently had no effect on central Pacific deep-water hafnium.

  4. SEPARATION OF HAFNIUM FROM ZIRCONIUM

    DOEpatents

    Overholser, L.B.; Barton, C.J. Sr.; Ramsey, J.W.

    1960-05-31

    The separation of hafnium impurities from zirconium can be accomplished by means of organic solvent extraction. The hafnium-containing zirconium feed material is dissolved in an aqueous chloride solution and the resulting solution is contacted with an organic hexone phase, with at least one of the phases containing thiocyanate. The hafnium is extracted into the organic phase while zirconium remains in the aqueous phase. Further recovery of zirconium is effected by stripping the onganic phase with a hydrochloric acid solution and commingling the resulting strip solution with the aqueous feed solution. Hexone is recovered and recycled by means of scrubbing the onganic phase with a sulfuric acid solution to remove the hafnium, and thiocyanate is recovered and recycled by means of neutralizing the effluent streams to obtain ammonium thiocyanate.

  5. Zirconium and hafnium

    USGS Publications Warehouse

    Jones, James V.; Piatak, Nadine M.; Bedinger, George M.; Schulz, Klaus J.; DeYoung,, John H.; Seal, Robert R.; Bradley, Dwight C.

    2017-12-19

    Zirconium and hafnium are corrosion-resistant metals that are widely used in the chemical and nuclear industries. Most zirconium is consumed in the form of the main ore mineral zircon (ZrSiO4, or as zirconium oxide or other zirconium chemicals. Zirconium and hafnium are both refractory lithophile elements that have nearly identical charge, ionic radii, and ionic potentials. As a result, their geochemical behavior is generally similar. Both elements are classified as incompatible because they have physical and crystallochemical properties that exclude them from the crystal lattices of most rock-forming minerals. Zircon and another, less common, ore mineral, baddeleyite (ZrO2), form primarily as accessory minerals in igneous rocks. The presence and abundance of these ore minerals in igneous rocks are largely controlled by the element concentrations in the magma source and by the processes of melt generation and evolution. The world’s largest primary deposits of zirconium and hafnium are associated with alkaline igneous rocks, and, in one locality on the Kola Peninsula of Murmanskaya Oblast, Russia, baddeleyite is recovered as a byproduct of apatite and magnetite mining. Otherwise, there are few primary igneous deposits of zirconium- and hafnium-bearing minerals with economic value at present. The main ore deposits worldwide are heavy-mineral sands produced by the weathering and erosion of preexisting rocks and the concentration of zircon and other economically important heavy minerals, such as ilmenite and rutile (for titanium), chromite (for chromium), and monazite (for rare-earth elements) in sedimentary systems, particularly in coastal environments. In coastal deposits, heavy-mineral enrichment occurs where sediment is repeatedly reworked by wind, waves, currents, and tidal processes. The resulting heavy-mineral-sand deposits, called placers or paleoplacers, preferentially form at relatively low latitudes on passive continental margins and supply 100 percent of

  6. Hafnium Oxide Film Etching Using Hydrogen Chloride Gas

    NASA Astrophysics Data System (ADS)

    Habuka, Hitoshi; Yamaji, Masahiko; Kobori, Yoshitsugu; Horii, Sadayoshi; Kunii, Yasuo

    2009-12-01

    Hydrogen chloride gas removes the hafnium oxide film formed by atomic layer deposition at the etch rate of about 1 nm/min. A 100 nm-thick hafnium oxide film was perfectly etched off at 1173 K for 60 min by 100% hydrogen chloride gas at 100 sccm. A weight decrease in the hafnium oxide film was observed at temperatures higher than ca. 600 K, which corresponds to the sublimation point of hafnium tetrachloride. The etching by-product is considered to be hafnium tetrachloride. The etching technique developed in this study is expected to be applicable to various processes, such as the cleaning of a hafnium oxide film deposition reactor.

  7. SEPARATING HAFNIUM FROM ZIRCONIUM

    DOEpatents

    Lister, B.A.J.; Duncan, J.F.

    1956-08-21

    A dilute aqueous solution of zirconyl chloride which is 1N to 2N in HCl is passed through a column of a cation exchange resin in acid form thereby absorbing both zirconium and associated hafnium impurity in the mesin. The cation exchange material with the absorbate is then eluted with aqueous sulfuric acid of a O.8N to 1.2N strength. The first portion of the eluate contains the zirconium substantially free of hafnium.

  8. Formulation and method for preparing gels comprising hydrous hafnium oxide

    DOEpatents

    Collins, Jack L; Hunt, Rodney D; Montgomery, Frederick C

    2013-08-06

    Formulations useful for preparing hydrous hafnium oxide gels contain a metal salt including hafnium, an acid, an organic base, and a complexing agent. Methods for preparing gels containing hydrous hafnium oxide include heating a formulation to a temperature sufficient to induce gel formation, where the formulation contains a metal salt including hafnium, an acid, an organic base, and a complexing agent.

  9. Silver-hafnium braze alloy

    DOEpatents

    Stephens, Jr., John J.; Hosking, F. Michael; Yost, Frederick G.

    2003-12-16

    A binary allow braze composition has been prepared and used in a bonded article of ceramic-ceramic and ceramic-metal materials. The braze composition comprises greater than approximately 95 wt % silver, greater than approximately 2 wt % hafnium and less than approximately 4.1 wt % hafnium, and less than approximately 0.2 wt % trace elements. The binary braze alloy is used to join a ceramic material to another ceramic material or a ceramic material, such as alumina, quartz, aluminum nitride, silicon nitride, silicon carbide, and mullite, to a metal material, such as iron-based metals, cobalt-based metals, nickel-based metals, molybdenum-based metals, tungsten-based metals, niobium-based metals, and tantalum-based metals. A hermetic bonded article is obtained with a strength greater than 10,000 psi.

  10. Hafnium-Based Contrast Agents for X-ray Computed Tomography.

    PubMed

    Berger, Markus; Bauser, Marcus; Frenzel, Thomas; Hilger, Christoph Stephan; Jost, Gregor; Lauria, Silvia; Morgenstern, Bernd; Neis, Christian; Pietsch, Hubertus; Sülzle, Detlev; Hegetschweiler, Kaspar

    2017-05-15

    Heavy-metal-based contrast agents (CAs) offer enhanced X-ray absorption for X-ray computed tomography (CT) compared to the currently used iodinated CAs. We report the discovery of new lanthanide and hafnium azainositol complexes and their optimization with respect to high water solubility and stability. Our efforts culminated in the synthesis of BAY-576, an uncharged hafnium complex with 3:2 stoichiometry and broken complex symmetry. The superior properties of this asymmetrically substituted hafnium CA were demonstrated by a CT angiography study in rabbits that revealed excellent signal contrast enhancement.

  11. 40 CFR 471.90 - Applicability; description of the zirconium-hafnium forming subcategory.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... zirconium-hafnium forming subcategory. 471.90 Section 471.90 Protection of Environment ENVIRONMENTAL... POINT SOURCE CATEGORY Zirconium-Hafnium Forming Subcategory § 471.90 Applicability; description of the zirconium-hafnium forming subcategory. This subpart applies to discharges of pollutants to waters of the...

  12. 40 CFR 421.330 - Applicability: Description of the primary zirconium and hafnium subcategory.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... primary zirconium and hafnium subcategory. 421.330 Section 421.330 Protection of Environment ENVIRONMENTAL... CATEGORY Primary Zirconium and Hafnium Subcategory § 421.330 Applicability: Description of the primary zirconium and hafnium subcategory. The provisions of this subpart are applicable to discharges resulting...

  13. Hafnium silicate and hafnium silicon oxynitride gate dielectrics for strained Si_xGe_1-x: Interface stability

    NASA Astrophysics Data System (ADS)

    Addepalli, Swarna; Sivasubramani, Prasanna; El-Bouanani, Mohamed; Kim, Moon; Gnade, Bruce; Wallace, Robert

    2003-03-01

    Strained Si_xGe_1-x layers have gained considerable attention due to hole mobility enhancement, and ease of integration with Si-based CMOS technology. The deposition of stable high-κ dielectrics [1] such as hafnium silicate and hafnium silicon oxynitride in direct contact with SiGe would simultaneously improve the capacitance of the gate stack and lower the leakage current for high performance SiGe devices. However, the oxidation of the Si_xGe_1-x substrate either during dielectric deposition or post-deposition processing would degrade device performance due to the thermodynamic instability of germanium oxide [2,3]. Results from XPS, HR-TEM, and C-V, and I-V analyses after various annealing treatments will be presented for hafnium silicate and hafnium silicon oxynitride films deposited on strained Si_xGe_1-x(100), and correlated with dielectric-Si_xGe_1-x(100) interface stability. Implications to the introduction of these oxides as viable gate dielectric candidates for SiGe-based CMOS technology will be discussed. This work is supported by DARPA through SPAWAR Grant No. N66001-00-1-8928, and the Texas Advanced Technology Program. References: [1] G. D. Wilk, R. M. Wallace and J. M. Anthony, Journal of Applied Physics, 89, 5243 (2001) [2] W. S. Liu, J .S. Chen, M.-A. Nicolet, V. Arbet-Engels, K. L. Wang, Journal of Applied Physics, 72, 4444 (1992), and, Applied Physics Letters, 62, 3321 (1993) [3] W. S. Liu, M. -A. Nicolet, H. -H. Park, B. -H. Koak, J. -W. Lee, Journal of Applied Physics, 78, 2631 (1995)

  14. A simple spectrophotometric method for determination of zirconium or hafnium in selected molybdenum-base alloys

    NASA Technical Reports Server (NTRS)

    Dupraw, W. A.

    1972-01-01

    A simple analytical procedure is described for accurately and precisely determining the zirconium or hafnium content of molybdenum-base alloys. The procedure is based on the reaction of the reagent Arsenazo III with zirconium or hafnium in strong hydrochloric acid solution. The colored complexes of zirconium or hafnium are formed in the presence of molybdenum. Titanium or rhenium in the alloy have no adverse effect on the zirconium or hafnium complex at the following levels in the selected aliquot: Mo, 10 mg; Re, 10 mg; Ti, 1 mg. The spectrophotometric measurement of the zirconium or hafnium complex is accomplished without prior separation with a relative standard deviation of 1.3 to 2.7 percent.

  15. Hafnium(IV) chloride complexes with chelating β-ketiminate ligands: Synthesis, spectroscopic characterization and volatility study

    NASA Astrophysics Data System (ADS)

    Patil, Siddappa A.; Medina, Phillip A.; Antic, Aleks; Ziller, Joseph W.; Vohs, Jason K.; Fahlman, Bradley D.

    2015-09-01

    The synthesis and characterization of four new β-ketiminate hafnium(IV) chloride complexes dichloro-bis[4-(phenylamido)pent-3-en-2-one]-hafnium (4a), dichloro-bis[4-(4-methylphenylamido)pent-3-en-2-one]-hafnium (4b), dichloro-bis[4-(4-methoxyphenylamido)pent-3-en-2-one]-hafnium (4c), and dichloro-bis[4-(4-chlorophenylamido)pent-3-en-2-one]-hafnium (4d) are reported. All the complexes (4a-d) were characterized by spectroscopic methods (1H NMR, 13C NMR, IR), and elemental analysis while the compound 4c was further examined by single-crystal X-ray diffraction, revealing that the complex is monomer with the hafnium center in octahedral coordination environment and oxygens of the chelating N-O ligands are trans to each other and the chloride ligands are in a cis arrangement. Volatile trends are established for four new β-ketiminate hafnium(IV) chloride complexes (4a-d). Sublimation enthalpies (ΔHsub) were calculated from thermogravimetric analysis (TGA) data, which show that, the dependence of ΔHsub on the molecular weight (4a-c) and inductive effects from chlorine (4d).

  16. Hafnium transistor process design for neural interfacing.

    PubMed

    Parent, David W; Basham, Eric J

    2009-01-01

    A design methodology is presented that uses 1-D process simulations of Metal Insulator Semiconductor (MIS) structures to design the threshold voltage of hafnium oxide based transistors used for neural recording. The methodology is comprised of 1-D analytical equations for threshold voltage specification, and doping profiles, and 1-D MIS Technical Computer Aided Design (TCAD) to design a process to implement a specific threshold voltage, which minimized simulation time. The process was then verified with a 2-D process/electrical TCAD simulation. Hafnium oxide films (HfO) were grown and characterized for dielectric constant and fixed oxide charge for various annealing temperatures, two important design variables in threshold voltage design.

  17. Thermochemistry of amorphous and crystalline zirconium and hafnium silicates.

    NASA Astrophysics Data System (ADS)

    Ushakov, S.; Brown, C. E.; Navrotsky, Alexandra; Boatner, L. A.; Demkov, A. A.; Wang, C.; Nguyen, B.-Y.

    2003-03-01

    Calorimetric investigation of amorphous and crystalline zirconium and hafnium silicates was performed as part of a research program on thermochemistry of alternative gate dielectrics. Amorphous hafnium and zirconium silicates with varying SiO2 content were synthesized by a sol-gel process. Crystalline zirconium and hafnium silicates (zircon and hafnon) were synthesized by solid state reaction at 1450 °C from amorphous gels and grown as single crystals from flux. High temperature oxide melt solution calorimetry in lead borate (2PbO.B2O3) solvent at 800 oC was used to measure drop solution enthalpies for amorphous and crystalline zirconium and hafnium silicates and corresponding oxides. Applying appropriate thermochemical cycles, formation enthalpy of crystalline ZrSiO4 (zircon) from binary oxides (baddeleite and quartz) at 298 K was calculated as -23 +/-2 kJ/mol and enthalpy difference between amorphous and crystalline zirconium silicate (vitrification enthalpy) was found to be 61 +/-3 kJ/mol. Crystallization onset temperatures of amorphous zirconium and hafnium silicates, as measured by differential scanning calorimetry (DSC), increased with silica content. The resulting crystalline phases, as characterized by X-ray diffraction (XRD), were tetragonal HfO2 and ZrO2. Critical crystallite size for tetragonal to monoclinic transformation of HfO2 in the gel was estimated as 6 +/-2 nm from XRD data Crystallization enthalpies per mole of hafnia and zirconia in gels decrease slightly together with crystallite size with increasing silica content, for example from -22 to -15 +/-1 kJ per mol of HfO2 crystallized at 740 and 1006 °C from silicates with 10 and 70 mol Applications of thermal analyses and solution calorimetry techniques together with first-principles density functional calculations to estimate interface and surface energies are discussed.

  18. Simultaneous determination of tantalum and hafnium in silicates by neutron activation analysis

    USGS Publications Warehouse

    Greenland, L.P.

    1968-01-01

    A neutron activation procedure suitable for the routine determination of tantalum and hafnium in silicates is described. The irradiated sample is fused with sodium peroxide and leached, and the insoluble hydroxides are dissolved in dilute hydrofluoric acid-hydrochloric acid. After LaF3 and AgCl scavenges, tantalum and hafnium are separated by anion exchange. Tantalum is obtained radiochemically pure; 233Pa and 95Zr contaminants in the hafnium fraction are resolved by ??-ray spectrometry. The chemical yield of the procedure is detemined after counting by re-irradiation. Values for the 8 U.S. Geological Survey standard rocks are reported. ?? 1968.

  19. The Hot-Pressing of Hafnium Carbide (Melting Point, 7030 F)

    NASA Technical Reports Server (NTRS)

    Sanders, William A.; Grisaffe, Salvatore J.

    1960-01-01

    An investigation was undertaken to determine the effects of the hot-pressing variables (temperature, pressure, and time) on the density and grain size of hafnium carbide disks. The purpose was to provide information necessary for the production of high-density test shapes for the determination of physical and mechanical properties. Hot-pressing of -325 mesh hafnium carbide powder was accomplished with a hydraulic press and an inductively heated graphite die assembly. The ranges investigated for each variable were as follows: temperature, 3500 to 4870 F; pressure, 1000 to 6030 pounds per square inch; and time, 5 to 60 minutes. Hafnium carbide bodies of approximately 98 percent theoretical density can be produced under the following minimal conditions: 4230 F, 3500 pounds per square inch, and 15 minutes. Further increases in temperature and time resulted only in greater grain size.

  20. Zirconium and hafnium in the southeastern Atlantic States

    USGS Publications Warehouse

    Mertie, J.B.

    1958-01-01

    The principal source of zirconium and hafnium is zircon, though a minor source is baddeleyite, mined only in Brazil. Zircon is an accessory mineral in igneous, metamorphic, and sedimentary rocks, but rarely occurs in hardrock in minable quantities. The principal sources of zircon are therefore alluvial deposits, which are mined in many countries of five continents. The principal commercial deposits in the United States are in Florida, though others exist elsewhere in the southeastern Coastal Plain. The evidence indicates that conditions for the accumulation of workable deposits of heavy minerals were more favorable during the interglacial stages of the Pleistocene epoch than during Recent time. Therefore detrital ores of large volume and high tenor are more likely to be found in the terrace deposits than along the present beaches. Other concentrations of heavy minerals, however, are possible at favored sites close to the Fall Line where the Tuscaloosa formation rests upon the crystalline rocks of the Piedmont province. A score of heavy and semiheavy minerals occur in the detrital deposits of Florida, but the principal salable minerals are ilmenite, leucoxene, rutile, and zircon, though monazite and staurolite are saved at some mining plants. Commercial deposits of heavy minerals are generally required to have a tenor of 4 percent, though ores with a lower tenor can be mined at a profit if the content of monazite is notably high. The percentages of zircon in the concentrates ranges from 10 to 16 percent, and in eastern Florida from 13 to 15 percent. Thus the tenor in zircon of the ore-bearing sands ranges from 0.4 to 0.6 percent. The content of hafnium in zircon is immaterial for many uses, but for some purposes very high or very low tenors in hafnium are required. Alluvial zircon cannot be separated into such varieties, which, if needed, must be obtained from sources in bedrock. It thus becomes necessary to determine the Hf : Zr ratios in zircon from many kinds of

  1. Separation of Zirconium and Hafnium: A Review

    NASA Astrophysics Data System (ADS)

    Xu, L.; Xiao, Y.; van Sandwijk, A.; Xu, Q.; Yang, Y.

    Zirconium is an ideal material for nuclear reactors due to its low absorption cross-section for thermal neutrons, whereas the typically contained hafnium with strong neutron-absorption is very harmful for zirconium. This paper provides an overview of the processes for separating hafnium from zirconium. The separation processes are roughly classified into hydro- and pyrometallurgical routes. The current dominant zirconium production route involves pyrometallurgical ore cracking, multi-step hydrometallurgical liquid-liquid extraction for hafnium removal and the reduction of zirconium tetrachloride to the pure metal by the Kroll process. The lengthy hydrometallurgical Zr-Hf separation operations leads to high production cost, intensive labour and heavy environmental burden. Using a compact pyrometallurgical separation method can simplify the whole production flowsheet with a higher process efficiency. The known separation methods are discussed based on the following reaction features: redox characteristics, volatility, electrochemical properties and molten salt extraction. The commercially operating extractive distillation process is a significant advance in Zr-Hf separation technology but it suffers from high process maintenance cost. The recently developed new process based on molten salt-metal equilibrium for Zr-Hf separation shows a great potential for industrial application, which is compact for nuclear grade zirconium production starting from crude ore. In the present paper, the available separation technologies are compared. The advantages and disadvantages as well as future directions of research and development for nuclear grade zirconium production are discussed.

  2. High P-T phase transitions and P-V-T equation of state of hafnium

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Hrubiak, Rostislav; Drozd, Vadym; Karbasi, Ali

    2016-07-29

    We measured the volume of hafnium at several pressures up to 67 GPa and at temperatures between 300 to 780 K using a resistively heated diamond anvil cell with synchrotron x-ray diffraction at the Advanced Photon Source. The measured data allows us to determine the P-V-T equation of state of hafnium. The previously described [Xia et al., Phys. Rev. B 42, 6736-6738 (1990)] phase transition from hcp ({alpha}) to simple hexagonal ({omega}) phase at 38 GPa at room temperature was not observed even up to 51 GPa. The {omega} phase was only observed at elevated temperatures. Our measurements have alsomore » improved the experimental constraint on the high P-T phase boundary between the {omega} phase and high pressure bcc ({beta}) phase of hafnium. Isothermal room temperature bulk modulus and its pressure derivative for the {alpha}-phase of hafnium were measured to be B{sub 0} = 112.9{+-}0.5 GPa and B{sub 0}'=3.29{+-}0.05, respectively. P-V-T data for the {alpha}-phase of hafnium was used to obtain a fit to a thermodynamic P-V-T equation of state based on model by Brosh et al. [CALPHAD 31, 173-185 (2007)].« less

  3. Hafnium transistor design for neural interfacing.

    PubMed

    Parent, David W; Basham, Eric J

    2008-01-01

    A design methodology is presented that uses the EKV model and the g(m)/I(D) biasing technique to design hafnium oxide field effect transistors that are suitable for neural recording circuitry. The DC gain of a common source amplifier is correlated to the structural properties of a Field Effect Transistor (FET) and a Metal Insulator Semiconductor (MIS) capacitor. This approach allows a transistor designer to use a design flow that starts with simple and intuitive 1-D equations for gain that can be verified in 1-D MIS capacitor TCAD simulations, before final TCAD process verification of transistor properties. The DC gain of a common source amplifier is optimized by using fast 1-D simulations and using slower, complex 2-D simulations only for verification. The 1-D equations are used to show that the increased dielectric constant of hafnium oxide allows a higher DC gain for a given oxide thickness. An additional benefit is that the MIS capacitor can be employed to test additional performance parameters important to an open gate transistor such as dielectric stability and ionic penetration.

  4. Etude de la nitruration carbothermique du dioxyde de hafnium par diffraction X à haute température

    NASA Astrophysics Data System (ADS)

    Pialoux, A.

    1993-03-01

    The carbothermal reduction of hafnium dioxide under atmospheric level nitrogen pressure has been investigated using a graphite resistance high temperature X-ray diffractometer up to around 2300 K. A carbon transfer reaction through the gaseous phase (N 2, CO/CO 2) is shown to precede, then to compete the direct reduction of the hafnium oxide by the graphite in pure nitrogen. A complex mechanism has been found that accounts for the formation of hafnium dioxynitride and possibly of three other hafnium oxynitrides, then of hafnium mononitride and hafnium monocarbonitride, along two different steps between 1613 and 1923 K. An evaluation has been made concerning the composition of these γ 1- HfO 2-xN x/2□ x/2 (CaF 2-type structure), γ 2- Hf 7O 11N 2, γ 3- Hf 7O 8N 4 (rhombohedral), γ 4- Hf 2ON 2 (Mn 2O 3-type structure), HfN and HfN 1-zC z (NaCl-type structure) phases, considering the variations of their lattice parameters and the available data in the literature, especially on the isomorphous compounds of zirconium. It must be emphasized the new γ 1- HfO 2-xN x/2 phase, the dilatation of which is linear ( overlineα = 12×10 -6K -1), shows a constant composition from 2158 down to 1473 K (x ≈ 0,2). But under 1473 K, inevitably, the hafnium dioxynitride disappears, and poorly crystallized monoclinic αHfO 2 and rhombohedral γ 2- Hf 7O 11N 2 are formed.

  5. RF sputtered silicon and hafnium nitrides as applied to 440C steel

    NASA Technical Reports Server (NTRS)

    Grill, A.; Aron, P. R.

    1984-01-01

    Silicon nitride and hafnium nitride coatings were deposited on oxidized and unoxidized 440C stainless steel substrates. Sputtering was done in mixtures of argon and nitrogen gases from pressed powder silicon nitride and from hafnium metal targets. The coatings and the interface between the coating and substrate were investigated by X-ray diffractometry, scanning electron microscopy, energy dispersive X-ray analysis and Auger electron spectroscopy. Oxide was found at all interfaces with an interface width of at least 600 A for the oxidized substrates and at least 300 A for the unoxidized substrates. Scratch test results demonstrate that the adhesion of hafnium nitride to both oxidized and unoxidized 440C is superior to that of silicon nitride. Oxidized 440C is found to have increased adhesion, to both nitrides, over that of unoxidized 440C. Coatings of both nitrides deposited at 8 mtorr were found to have increased adhesion to both oxidized and unoxidized 440C over those deposited at 20 mtorr.

  6. Tensile and stress-rupture behavior of hafnium carbide dispersed molybdenum and tungsten base alloy wires

    NASA Technical Reports Server (NTRS)

    Yun, Hee Mann; Titran, Robert H.

    1993-01-01

    The tensile strain rate sensitivity and the stress-rupture strength of Mo-base and W-base alloy wires, 380 microns in diameter, were determined over the temperature range from 1200 K to 1600 K. Three molybdenum alloy wires; Mo + 1.1w/o hafnium carbide (MoHfC), Mo + 25w/o W + 1.1w/o hafnium carbide (MoHfC+25W) and Mo + 45w/o W + 1.1w/o hafnium carbide (MoHfC+45W), and a W + 0.4w/o hafnium carbide (WHfC) tungsten alloy wire were evaluated. The tensile strength of all wires studied was found to have a positive strain rate sensitivity. The strain rate dependency increased with increasing temperature and is associated with grain broadening of the initial fibrous structures. The hafnium carbide dispersed W-base and Mo-base alloys have superior tensile and stress-rupture properties than those without HfC. On a density compensated basis the MoHfC wires exhibit superior tensile and stress-rupture strengths to the WHfC wires up to approximately 1400 K. Addition of tungsten in the Mo-alloy wires was found to increase the long-term stress rupture strength at temperatures above 1400 K. Theoretical calculations indicate that the strength and ductility advantage of the HfC dispersed alloy wires is due to the resistance to recrystallization imparted by the dispersoid.

  7. Mineral resource of the month: zirconium and hafnium

    USGS Publications Warehouse

    Gambogi, Joseph

    2007-01-01

    Zirconium and hafnium are corrosion-resistant metals that are grouped in the same family as titanium on the periodic table. The two elements commonly occur in oxide and silicate minerals and have significant economic importance in everything from ink, ceramics and golf shoes to nuclear fuel rods.

  8. SEPARATING HAFNIUM FROM ZIRCONIUM

    DOEpatents

    Lister, B.A.J.; Duncan, J.F.; Hutcheon, J.M.

    1956-08-21

    Substantially complete separation of zirconium from hafnium may be obtained by elution of ion exchange material, on which compounds of the elements are adsorbed, with an approximately normal solution of sulfuric acid. Preferably the acid concentration is between 0.8 N amd 1.2 N, amd should not exceed 1.5 N;. Increasing the concentration of sulfate ion in the eluting solution by addition of a soluble sulfate, such as sodium sulfate, has been found to be advantageous. The preferred ion exchange materials are sulfonated polystyrene resins such as Dowex 50,'' and are preferably arranged in a column through which the solutions are passed.

  9. Effect of cathode cooling efficiency and oxygen plasma gas pressure on the hafnium cathode wall temperature

    NASA Astrophysics Data System (ADS)

    Ashtekar, Koustubh; Diehl, Gregory; Hamer, John

    2012-10-01

    The hafnium cathode is widely used in DC plasma arc cutting (PAC) under an oxygen gas environment to cut iron and iron alloys. The hafnium erosion is always a concern which is controlled by the surface temperature. In this study, the effect of cathode cooling efficiency and oxygen gas pressure on the hafnium surface temperature are quantified. The two layer cathode sheath model is applied on the refractive hafnium surface while oxygen species (O2, O, O+, O++, e-) are considered within the thermal dis-equilibrium regime. The system of non-linear equations comprising of current density balance, heat flux balance at both the cathode surface and the sheath-ionization layer is coupled with the plasma gas composition solver. Using cooling heat flux, gas pressure and current density as inputs; the cathode wall temperature, electron temperature, and sheath voltage drop are calculated. Additionally, contribution of emitted electron current (Je) and ions current (Ji) to the total current flux are estimated. Higher gas pressure usually reduces Ji and increases Je that reduces the surface temperature by thermionic cooling.

  10. 45 CFR 159.110 - Definitions.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 45 Public Welfare 1 2010-10-01 2010-10-01 false Definitions. 159.110 Section 159.110 Public Welfare DEPARTMENT OF HEALTH AND HUMAN SERVICES REQUIREMENTS RELATING TO HEALTH CARE ACCESS HEALTH CARE REFORM INSURANCE WEB PORTAL § 159.110 Definitions. For purposes of part 159, the following definitions...

  11. Low-voltage bendable pentacene thin-film transistor with stainless steel substrate and polystyrene-coated hafnium silicate dielectric.

    PubMed

    Yun, Dong-Jin; Lee, Seunghyup; Yong, Kijung; Rhee, Shi-Woo

    2012-04-01

    The hafnium silicate and aluminum oxide high-k dielectrics were deposited on stainless steel substrate using atomic layer deposition process and octadecyltrichlorosilane (OTS) and polystyrene (PS) were treated improve crystallinity of pentacene grown on them. Besides, the effects of the pentacene deposition condition on the morphologies, crystallinities and electrical properties of pentacene were characterized. Therefore, the surface treatment condition on dielectric and pentacene deposition conditions were optimized. The pentacene grown on polystyrene coated high-k dielectric at low deposition rate and temperature (0.2-0.3 Å/s and R.T.) showed the largest grain size (0.8-1.0 μm) and highest crystallinity among pentacenes deposited various deposition conditions, and the pentacene TFT with polystyrene coated high-k dielectric showed excellent device-performance. To decrease threshold voltage of pentacene TFT, the polystyrene-thickness on high-k dielectric was controlled using different concentration of polystyrene solution. As the polystyrene-thickness on hafnium silicate decreases, the dielectric constant of polystyrene/hafnium silicate increases, while the crystallinity of pentacene grown on polystyrene/hafnium silicate did not change. Using low-thickness polystyrene coated hafnium silicate dielectric, the high-performance and low voltage operating (<5 V) pentacene thin film transistor (μ: ~2 cm(2)/(V s), on/off ratio, >1 × 10(4)) and complementary inverter (DC gains, ~20) could be fabricated.

  12. Atomic layer deposition and characterization of hafnium oxide grown on silicon from tetrakis(diethylamino)hafnium and water vapor

    NASA Astrophysics Data System (ADS)

    Deshpande, Anand; Inman, Ronald; Jursich, Gregory; Takoudis, Christos

    2004-09-01

    In this work thin films of hafnium oxide are deposited on Si(100) substrates by means of atomic layer deposition (ALD) using tetrakis(diethylamino)hafnium and water vapor at substrate temperatures of 250-350ºC. Our system capabilities include fast transient delivery of reactive fluids, real-time vapor phase detection (in situ tunable diode laser hygrometer), precursor thermochemical capabilities, and ppt level elemental analysis by inductive coupling plasma mass spectrometry. The composition, purity, and other properties of the films and resulting interfaces are determined using x-ray and Fourier transform infrared spectroscopies, Z-contrast imaging and electron energy loss spectroscopy in a scanning transmission electron microscope with A˚ scale resolution, and spectroscopic ellipsometry. The observed ALD rate is ~1.4 A˚ per cycle. The nonuniformity across the film is less than 4%. Negligible carbon contamination is found in the resulting stoichiometric films under all conditions studied. The pulse sequence was optimized to prevent disastrous particulate problems while still minimizing purge times. The film deposition is investigated as a function of substrate temperature and reagent pulsing characteristics. A mild inverse temperature dependence of the ALD rate is observed. The initial stage of the HfO2 growth is investigated in detail.

  13. Review of anhydrous zirconium-hafnium separation techniques. Information circular/1984

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Skaggs, R.L.; Rogers, D.T.; Hunter, D.B.

    1983-12-01

    Sixteen nonaqueous techniques conceived to replace the current aqueous scheme for separating hafnium and zirconium tetrachlorides were reviewed and evaluated by the Bureau of Mines. The methods are divided into two classes: separation by fractional volatilization of the tetrachlorides, which takes advantage of the higher volatility of hafnium tetrachloride; and separation by chemical techniques, based on differences in chemical behavior of the two tetrachlorides. The criteria used to evaluate separation methods were temperature, pressure, separation factor per equilibrium stage, complexity, compatibility with existing technology, and potential for continuous operation. Three processes were selected as being most promising: (1) high-pressure distillation,more » (2) extractive distillation from a molten salt, and (3) preferential reduction of gaseous ZrCl4. Any of the proposed nonaqueous Hf-Zr separation schemes must be supplemented with additional purification to remove trace impurities.« less

  14. Development and characterization of ultrathin hafnium titanates as high permittivity gate insulators

    NASA Astrophysics Data System (ADS)

    Li, Min

    High permittivity or high-kappa materials are being developed for use as gate insulators for future ultrascaled metal oxide semiconductor field effect transistors (MOSFETs). Hafnium containing compounds are the leading candidates. Due to its moderate permittivity, however, it is difficult to achieve HfO2 gate structures with an EOT well below 1.0 nm. One approach to increase HfO2 permittivity is combining it with a very high-kappa material, such as TiO2. In this thesis, we systematically studied the electrical and physical characteristics of high-kappa hafnium titanates films as gate insulators. A series of HfxTi1-xO2 films with well-controlled composition were deposited using an MOCVD system. The physical properties of the films were analyzed using a variety of characterization techniques. X-ray micro diffraction indicates that the Ti-rich thin film is more immune to crystallization. TEM analysis showed that the thick stoichiometric HfTiO 4 film has an orthorhombic structure and large anisotropic grains. The C-V curves from the devices with the hafnium titanates films displayed relatively low hysteresis. In a certain composition range, the interfacial layer (IL) EOT and permittivity of HfxTi1-x O2 increases linearly with increasing Ti. The charge is negative for HfxTi1-xO2/IL and positive for Si/IL interface, and the magnitude increases as Hf increases. For ultra-thin films (less than 2 nm EOT), the leakage current increases with increasing HE Moreover, the Hf-rich sample has weaker temperature dependence of the current. In the MOSFET devices with the hafnium titanates films, normal transistor characteristics were observed, also electron mobility degradation. Next, we investigated the effects that different pre-deposition surface treatments, including HF dipping, NH3 surface nitridation, and HfO2 deposition, have on the electrical properties of hafnium titanates. Surface nitridation shows stronger effect than the thin HfO2 layer. The nitrided samples displayed a

  15. 33 CFR 159.55 - Identification.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Identification. 159.55 Section 159.55 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.55 Identification. (a) Each...

  16. 33 CFR 159.15 - Certification.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Certification. 159.15 Section 159.15 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Certification Procedures § 159.15 Certification. (a) The recognized facility...

  17. 33 CFR 159.73 - Conductors.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Conductors. 159.73 Section 159.73 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.73 Conductors. Current carrying conductors must be...

  18. 33 CFR 159.73 - Conductors.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Conductors. 159.73 Section 159.73 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.73 Conductors. Current carrying conductors must be...

  19. 33 CFR 159.79 - Terminals.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Terminals. 159.79 Section 159.79 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.79 Terminals. Terminals must be solderless lugs...

  20. 33 CFR 159.61 - Vents.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Vents. 159.61 Section 159.61 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.61 Vents. Vents must be designed and constructed...

  1. 33 CFR 159.81 - Baffles.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Baffles. 159.81 Section 159.81 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.81 Baffles. Baffles in sewage retention tanks, if...

  2. 33 CFR 159.59 - Placard.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Placard. 159.59 Section 159.59 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.59 Placard. Each device must have a placard...

  3. 32 CFR 159.1 - Purpose.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 32 National Defense 1 2010-07-01 2010-07-01 false Purpose. 159.1 Section 159.1 National Defense Department of Defense OFFICE OF THE SECRETARY OF DEFENSE SECURITY PRIVATE SECURITY CONTRACTORS OPERATING IN CONTINGENCY OPERATIONS § 159.1 Purpose. This part establishes policy, assigns responsibilities and provides...

  4. Evidence for oxygen vacancies movement during wake-up in ferroelectric hafnium oxide

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Starschich, S.; Böttger, U.; Menzel, S.

    The wake-up effect which is observed in ferroelectric hafnium oxide is investigated in yttrium doped hafnium oxide prepared by chemical solution deposition. It can be shown that not the amount of cycles but the duration of the applied electrical field is essential for the wake-up. Temperature dependent wake-up cycling in a range of −160 °C to 100 °C reveals a strong temperature activation of the wake-up, which can be attributed to ion rearrangement during cycling. By using asymmetrical electrodes, resistive valence change mechanism switching can be observed coincident with ferroelectric switching. From the given results, it can be concluded that redistribution ofmore » oxygen vacancies is the origin of the wake-up effect.« less

  5. 33 CFR 159.305 - Definitions.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 2 2013-07-01 2013-07-01 false Definitions. 159.305 Section 159... § 159.305 Definitions. In this subpart: Administrator—means the Administrator of the United States.... Cruise Vessel—means a passenger vessel as defined in section 2101(22) of Title 46, United States Code...

  6. 33 CFR 159.305 - Definitions.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 2 2012-07-01 2012-07-01 false Definitions. 159.305 Section 159... § 159.305 Definitions. In this subpart: Administrator—means the Administrator of the United States.... Cruise Vessel—means a passenger vessel as defined in section 2101(22) of Title 46, United States Code...

  7. 33 CFR 159.305 - Definitions.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 2 2014-07-01 2014-07-01 false Definitions. 159.305 Section 159... § 159.305 Definitions. In this subpart: Administrator—means the Administrator of the United States.... Cruise Vessel—means a passenger vessel as defined in section 2101(22) of Title 46, United States Code...

  8. 33 CFR 159.95 - Safety.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Safety. 159.95 Section 159.95 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.95 Safety. (a) Each device must— (1) Be free of...

  9. Effect of hafnium doping on density of states in dual-target magnetron co-sputtering HfZnSnO thin film transistors

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Huang, Chuan-Xin; Li, Jun, E-mail: SHUniverjunli@163.com; Fu, Yi-Zhou

    2015-11-23

    This study investigates the effect of hafnium doping on the density of states (DOSs) in HfZnSnO thin film transistors fabricated by dual-target magnetron co-sputtering system. The DOSs is extracted by temperature-dependent field-effect measurements, and they decrease from 1.1 × 10{sup 17} to 4.6 × 10{sup 16 }eV/cm{sup 3} with increasing the hafnium concentrations. The behavior of DOSs for the increasing hafnium concentration HfZnSnO thin film transistors can be confirmed by both the reduction of ΔV{sub T} under bias stress and the trapping charges calculated by capacitance voltage measurements. It suggests that the reduction in DOSs due to the hafnium doping is closely related with themore » bias stability and thermal stability.« less

  10. 32 CFR 159.4 - Policy.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 32 National Defense 1 2010-07-01 2010-07-01 false Policy. 159.4 Section 159.4 National Defense Department of Defense OFFICE OF THE SECRETARY OF DEFENSE SECURITY PRIVATE SECURITY CONTRACTORS OPERATING IN CONTINGENCY OPERATIONS § 159.4 Policy. (a) Consistent with the requirements of paragraph (a)(2) of section 862...

  11. Enzymatic function of loop movement in enolase: preparation and some properties of H159N, H159A, H159F, and N207A enolases.

    PubMed

    Brewer, John M; Glover, Claiborne V C; Holland, Michael J; Lebioda, Lukasz

    2003-05-01

    The hypothesis that His159 in yeast enolase moves on a polypeptide loop to protonate the phosphoryl of 2-phosphoglycerate to initiate its conversion to phosphoenolpyruvate was tested by preparing H159N, H159A, and H159F enolases. These have 0.07%-0.25% of the native activity under standard assay conditions and the pH dependence of maximum velocities of H159A and H159N mutants is markedly altered. Activation by Mg2+ is biphasic, with the smaller Mg2+ activation constant closer to that of the "catalytic" Mg2+ binding site of native enolase and the larger in the mM range in which native enolase is inhibited. A third Mg2+ may bind to the phosphoryl, functionally replacing proton donation by His159. N207A enolase lacks an intersubunit interaction that stabilizes the closed loop(s) conformation when 2-phosphoglycerate binds. It has 21% of the native activity, also exhibits biphasic Mg2+ activation, and its reaction with the aldehyde analogue of the substrate is more strongly inhibited than is its normal enzymatic reaction. Polypeptide loop(s) closure may keep a proton from His159 interacting with the substrate phosphoryl oxygen long enough to stabilize a carbanion intermediate.

  12. 33 CFR 159.95 - Safety.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Safety. 159.95 Section 159.95... SANITATION DEVICES Design, Construction, and Testing § 159.95 Safety. (a) Each device must— (1) Be free of... explosion or over pressurization as a result of an accumulation of gases; and (3) Meet all other safety...

  13. Hafnium germanosilicate thin films for gate and capacitor dielectric applications: thermal stability studies

    NASA Astrophysics Data System (ADS)

    Addepalli, Swarna; Sivasubramani, Prasanna; El-Bouanani, Mohamed; Kim, Moon; Gnade, Bruce; Wallace, Robert

    2003-03-01

    The use of SiO_2-GeO2 mixtures in gate and capacitor dielectric applications is hampered by the inherent thermodynamic instability of germanium oxide. Studies to date have confirmed that germanium oxide is readily converted to elemental germanium [1,2]. In sharp contrast, germanium oxide is known to form stable compounds with transition metal oxides such as hafnium oxide (hafnium germanate, HfGeO_4) [3]. Thus, the incorporation of hafnium in SiO_2-GeO2 may be expected to enhance the thermal stability of germanium oxide via Hf-O-Ge bond formation. In addition, the introduction of a transition metal would simultaneously enhance the capacitance of the dielectric thereby permitting a thicker dielectric which reduces leakage current [4]. In this study, the thermal stability of PVD-grown hafnium germanosilicate (HfGeSiO) films was investigated. XPS, HR-TEM, C-V and I-V results of films after deposition and subsequent annealing treatments will be presented. The results indicate that the presence or formation of elemental germanium drastically affects the stability of the HfGeSiO films. This work is supported by DARPA through SPAWAR Grant No. N66001-00-1-8928, and the Texas Advanced Technology Program. References: [1] W. S. Liu, J .S. Chen, M.-A. Nicolet, V. Arbet-Engels, K. L. Wang, Journal of Applied Physics, 72, 4444 (1992), and, Applied Physics Letters, 62, 3321 (1993) [2] W. S. Liu, M. -A. Nicolet, H. -H. Park, B. -H. Koak, J. -W. Lee, Journal of Applied Physics, 78, 2631 (1995) [3] P. M. Lambert, Inorganic Chemistry, 37, 1352 (1998) [4] G. D. Wilk, R. M. Wallace and J. M. Anthony, Journal of Applied Physics, 89, 5243 (2001)

  14. 46 CFR 159.005-12 - Plans.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 6 2010-10-01 2010-10-01 false Plans. 159.005-12 Section 159.005-12 Shipping COAST...: SPECIFICATIONS AND APPROVAL APPROVAL OF EQUIPMENT AND MATERIALS Approval Procedures § 159.005-12 Plans. (a) Each set of plans under § 159.005-9(a)(5)(ii) for equipment must include the following: (1) An assembly...

  15. 7 CFR 15.9 - Hearings.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 7 Agriculture 1 2014-01-01 2014-01-01 false Hearings. 15.9 Section 15.9 Agriculture Office of the... Department of Agriculture-Effectuation of Title VI of the Civil Rights Act of 1964 § 15.9 Hearings. (a) Opportunity for hearing. Whenever an opportunity for a hearing is required under the regulations in this part...

  16. 7 CFR 15.9 - Hearings.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 7 Agriculture 1 2010-01-01 2010-01-01 false Hearings. 15.9 Section 15.9 Agriculture Office of the... Department of Agriculture-Effectuation of Title VI of the Civil Rights Act of 1964 § 15.9 Hearings. (a) Opportunity for hearing. Whenever an opportunity for a hearing is required under the regulations in this part...

  17. 19 CFR 159.61 - General.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 19 Customs Duties 2 2011-04-01 2011-04-01 false General. 159.61 Section 159.61 Customs Duties U.S...) LIQUIDATION OF DUTIES Continued Dumping and Subsidy Offset § 159.61 General. (a) Continued dumping and subsidy... U.S.C. 1675c), known as the Continued Dumping and Subsidy Offset Act of 2000, assessed duties...

  18. 19 CFR 159.61 - General.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 19 Customs Duties 2 2010-04-01 2010-04-01 false General. 159.61 Section 159.61 Customs Duties U.S...) LIQUIDATION OF DUTIES Continued Dumping and Subsidy Offset § 159.61 General. (a) Continued dumping and subsidy... U.S.C. 1675c), known as the Continued Dumping and Subsidy Offset Act of 2000, assessed duties...

  19. Article having an improved platinum-aluminum-hafnium protective coating

    NASA Technical Reports Server (NTRS)

    Nagaraj, Bangalore Aswatha (Inventor); Williams, Jeffrey Lawrence (Inventor)

    2005-01-01

    An article protected by a protective coating has a substrate and a protective coating having an outer layer deposited upon the substrate surface and a diffusion zone formed by interdiffusion of the outer layer and the substrate. The protective coating includes platinum, aluminum, no more than about 2 weight percent hafnium, and substantially no silicon. The outer layer is substantially a single phase.

  20. Hafnium-Based Bulk Metallic Glasses for Kinetic Energy Penetrators

    DTIC Science & Technology

    2004-12-01

    uranium -based (DU) and tungsten- nickel -iron (W-Ni-Fe) composite kinetic energy (KE) munitions is primarily ascribed to their high densities (U: ρ...based on an invariant point identified in the hafnium- copper- nickel ternary system. They are denser than zirconium-based glass-forming compositions...depleted- uranium penetrators. 1. INTRODUCTION 1.1 Criterion for Effective Kinetic Energy Penetrator Performance The lethality of depleted

  1. 33 CFR 159.93 - Independent supporting.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Independent supporting. 159.93 Section 159.93 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.93 Independent supporting. The...

  2. 33 CFR 159.75 - Overcurrent protection.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Overcurrent protection. 159.75 Section 159.75 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.75 Overcurrent protection...

  3. 33 CFR 159.101 - Testing: general.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Testing: general. 159.101 Section 159.101 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.101 Testing: general. Unless...

  4. 40 CFR 156.159 - Compliance date.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 24 2011-07-01 2011-07-01 false Compliance date. 156.159 Section 156.159 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PESTICIDE PROGRAMS LABELING REQUIREMENTS FOR PESTICIDES AND DEVICES Container Labeling § 156.159 Compliance date. Any pesticide product...

  5. 33 CFR 159.103 - Vibration test.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Vibration test. 159.103 Section 159.103 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.103 Vibration test. The device...

  6. 33 CFR 159.109 - Pressure test.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Pressure test. 159.109 Section 159.109 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.109 Pressure test. Any sewage...

  7. 33 CFR 159.87 - Removal fittings.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Removal fittings. 159.87 Section 159.87 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.87 Removal fittings. If sewage...

  8. 33 CFR 159.83 - Level indicator.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Level indicator. 159.83 Section 159.83 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.83 Level indicator. Each sewage...

  9. 33 CFR 159.85 - Sewage removal.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Sewage removal. 159.85 Section 159.85 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.85 Sewage removal. The device...

  10. 33 CFR 159.19 - Testing equivalency.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Testing equivalency. 159.19 Section 159.19 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Certification Procedures § 159.19 Testing equivalency. (a) If a test...

  11. 33 CFR 159.83 - Level indicator.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Level indicator. 159.83 Section 159.83 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.83 Level indicator. Each sewage...

  12. 33 CFR 159.69 - Motor ratings.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Motor ratings. 159.69 Section 159.69 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.69 Motor ratings. Motors must be rated...

  13. 33 CFR 159.107 - Rolling test.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Rolling test. 159.107 Section 159.107 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.107 Rolling test. (a) The device, with...

  14. 33 CFR 159.105 - Shock test.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Shock test. 159.105 Section 159.105 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.105 Shock test. The device, with liquid...

  15. 33 CFR 159.69 - Motor ratings.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Motor ratings. 159.69 Section 159.69 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.69 Motor ratings. Motors must be rated...

  16. 33 CFR 159.307 - Untreated sewage.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Untreated sewage. 159.307 Section 159.307 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED... Operations § 159.307 Untreated sewage. No person shall discharge any untreated sewage from a cruise vessel...

  17. 7 CFR 1786.159 - Initial closing.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 7 Agriculture 12 2010-01-01 2010-01-01 false Initial closing. 1786.159 Section 1786.159... Discounted Prepayments on RUS Electric Loans § 1786.159 Initial closing. (a) Upon receipt of the prepayment agreement, the borrower may submit, pursuant to the terms of the prepayment agreement, a closing request...

  18. Inter-diffusion of copper and hafnium as studied by x-ray photoelectron spectroscopy

    NASA Astrophysics Data System (ADS)

    Pearson, Justin; Chourasia, A. R.

    The Cu/Hf interface has been characterized by x-ray photoelectron spectroscopy. Thin films (thicknesses ranging from 100 nm to 150 nm) of hafnium were deposited on a silicon substrate. About 80 nm of copper was then deposited on such samples. The e-beam method was used for the deposition. The samples were annealed for 30 min at temperatures of 100, 200, 300, 400, and 500°C. The inter-diffusion of copper and hafnium was investigated by sequential sputter depth profiling and x-ray photoelectron spectroscopy. The interdiffusion in each case was analyzed by the Matano-Boltzmann's procedure using the Fick's second law. The interdiffusion coefficients and the width of the interface as determined from the data have been correlated with the annealing temperature. Supported by Organized Research, TAMU-Commerce.

  19. 46 CFR 159.001-3 - Definitions.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 6 2010-10-01 2010-10-01 false Definitions. 159.001-3 Section 159.001-3 Shipping COAST...: SPECIFICATIONS AND APPROVAL APPROVAL OF EQUIPMENT AND MATERIALS General § 159.001-3 Definitions. As used in this part: Classification society means an organization involved in the inspection of ships and ship...

  20. 19 CFR 159.33 - Proclaimed rate.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 19 Customs Duties 2 2011-04-01 2011-04-01 false Proclaimed rate. 159.33 Section 159.33 Customs... (CONTINUED) LIQUIDATION OF DUTIES Conversion of Foreign Currency § 159.33 Proclaimed rate. If a rate of... currency involved, such proclaimed rate shall be used unless it varies by 5 percent or more from the...

  1. 19 CFR 159.33 - Proclaimed rate.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 19 Customs Duties 2 2012-04-01 2012-04-01 false Proclaimed rate. 159.33 Section 159.33 Customs... (CONTINUED) LIQUIDATION OF DUTIES Conversion of Foreign Currency § 159.33 Proclaimed rate. If a rate of... currency involved, such proclaimed rate shall be used unless it varies by 5 percent or more from the...

  2. 19 CFR 159.33 - Proclaimed rate.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 19 Customs Duties 2 2013-04-01 2013-04-01 false Proclaimed rate. 159.33 Section 159.33 Customs... (CONTINUED) LIQUIDATION OF DUTIES Conversion of Foreign Currency § 159.33 Proclaimed rate. If a rate of... currency involved, such proclaimed rate shall be used unless it varies by 5 percent or more from the...

  3. 27 CFR 9.159 - Yorkville Highlands.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 1 2010-04-01 2010-04-01 false Yorkville Highlands. 9.159 Section 9.159 Alcohol, Tobacco Products and Firearms ALCOHOL AND TOBACCO TAX AND TRADE BUREAU, DEPARTMENT OF THE TREASURY LIQUORS AMERICAN VITICULTURAL AREAS Approved American Viticultural Areas § 9.159 Yorkville Highlands. (a) Name. The name of th...

  4. 27 CFR 9.159 - Yorkville Highlands.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 1 2014-04-01 2014-04-01 false Yorkville Highlands. 9.159 Section 9.159 Alcohol, Tobacco Products and Firearms ALCOHOL AND TOBACCO TAX AND TRADE BUREAU, DEPARTMENT OF THE TREASURY ALCOHOL AMERICAN VITICULTURAL AREAS Approved American Viticultural Areas § 9.159 Yorkville Highlands. (a) Name. The name of th...

  5. 27 CFR 9.159 - Yorkville Highlands.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 1 2011-04-01 2011-04-01 false Yorkville Highlands. 9.159 Section 9.159 Alcohol, Tobacco Products and Firearms ALCOHOL AND TOBACCO TAX AND TRADE BUREAU, DEPARTMENT OF THE TREASURY LIQUORS AMERICAN VITICULTURAL AREAS Approved American Viticultural Areas § 9.159 Yorkville Highlands. (a) Name. The name of th...

  6. 27 CFR 9.159 - Yorkville Highlands.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 1 2013-04-01 2013-04-01 false Yorkville Highlands. 9.159 Section 9.159 Alcohol, Tobacco Products and Firearms ALCOHOL AND TOBACCO TAX AND TRADE BUREAU, DEPARTMENT OF THE TREASURY ALCOHOL AMERICAN VITICULTURAL AREAS Approved American Viticultural Areas § 9.159 Yorkville Highlands. (a) Name. The name of th...

  7. 27 CFR 9.159 - Yorkville Highlands.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 27 Alcohol, Tobacco Products and Firearms 1 2012-04-01 2012-04-01 false Yorkville Highlands. 9.159 Section 9.159 Alcohol, Tobacco Products and Firearms ALCOHOL AND TOBACCO TAX AND TRADE BUREAU, DEPARTMENT OF THE TREASURY LIQUORS AMERICAN VITICULTURAL AREAS Approved American Viticultural Areas § 9.159 Yorkville Highlands. (a) Name. The name of th...

  8. The performance of hafnium and gadolinium self powered neutron detectors in the TREAT reactor

    NASA Astrophysics Data System (ADS)

    Imel, G. R.; Hart, P. R.

    1996-05-01

    The use of gadolinium and hafnium self powered neutron detectors in a transient reactor is described in this paper. The detectors were calibrated to the fission rate of U-235 using calibrated fission chambers; the calibration factors were tested in two reactors in steady state and found to be consistent. Calibration of the detectors in transient reactor conditions was done by using uranium wires that were analyzed by radiochemistry techniques to determine total fissions during the transient. This was correlated to the time-integrated current of the detectors during the transient. A temperature correction factor was derived to account for self-shielding effects in the hafnium and gadolinium detectors. The dynamic response of the detectors under transient conditions was studied, and found to be excellent.

  9. 33 CFR 159.11 - Purpose.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Purpose. 159.11 Section 159.11 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE... certification of marine sanitation devices and authorization for labels on certified devices. ...

  10. 32 CFR 1906.152-1906.159 - [Reserved

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 32 National Defense 6 2013-07-01 2013-07-01 false [Reserved] 1906.152-1906.159 Section 1906.152-1906.159 National Defense Other Regulations Relating to National Defense CENTRAL INTELLIGENCE AGENCY... INTELLIGENCE AGENCY §§ 1906.152-1906.159 [Reserved] ...

  11. 32 CFR 1906.152-1906.159 - [Reserved

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 32 National Defense 6 2011-07-01 2011-07-01 false [Reserved] 1906.152-1906.159 Section 1906.152-1906.159 National Defense Other Regulations Relating to National Defense CENTRAL INTELLIGENCE AGENCY... INTELLIGENCE AGENCY §§ 1906.152-1906.159 [Reserved] ...

  12. 32 CFR 1906.152-1906.159 - [Reserved

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 32 National Defense 6 2014-07-01 2014-07-01 false [Reserved] 1906.152-1906.159 Section 1906.152-1906.159 National Defense Other Regulations Relating to National Defense CENTRAL INTELLIGENCE AGENCY... INTELLIGENCE AGENCY §§ 1906.152-1906.159 [Reserved] ...

  13. 32 CFR 1906.152-1906.159 - [Reserved

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 32 National Defense 6 2010-07-01 2010-07-01 false [Reserved] 1906.152-1906.159 Section 1906.152-1906.159 National Defense Other Regulations Relating to National Defense CENTRAL INTELLIGENCE AGENCY... INTELLIGENCE AGENCY §§ 1906.152-1906.159 [Reserved] ...

  14. 32 CFR 1906.152-1906.159 - [Reserved

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 32 National Defense 6 2012-07-01 2012-07-01 false [Reserved] 1906.152-1906.159 Section 1906.152-1906.159 National Defense Other Regulations Relating to National Defense CENTRAL INTELLIGENCE AGENCY... INTELLIGENCE AGENCY §§ 1906.152-1906.159 [Reserved] ...

  15. "Decarbonization" of an imino N-heterocyclic carbene via triple benzyl migration from hafnium

    USDA-ARS?s Scientific Manuscript database

    An imino N-heterocyclic carbene underwent three sequential benzyl migrations upon reaction with tetrabenzylhafnium, resulting in complete removal of the carbene carbon from the ligand. The resulting eneamido-amidinato hafnium complex showed alkene polymerization activity comparable to that of a prec...

  16. 33 CFR 159.1 - Purpose.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Purpose. 159.1 Section 159.1 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE... construction of marine sanitation devices and procedures for certifying that marine sanitation devices meet the...

  17. 33 CFR 159.1 - Purpose.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Purpose. 159.1 Section 159.1 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE... construction of marine sanitation devices and procedures for certifying that marine sanitation devices meet the...

  18. 19 CFR 201.152-201.159 - [Reserved

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 19 Customs Duties 3 2010-04-01 2010-04-01 false [Reserved] 201.152-201.159 Section 201.152-201.159 Customs Duties UNITED STATES INTERNATIONAL TRADE COMMISSION GENERAL RULES OF GENERAL APPLICATION.... International Trade Commission §§ 201.152-201.159 [Reserved] ...

  19. 19 CFR 201.152-201.159 - [Reserved

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 19 Customs Duties 3 2011-04-01 2011-04-01 false [Reserved] 201.152-201.159 Section 201.152-201.159 Customs Duties UNITED STATES INTERNATIONAL TRADE COMMISSION GENERAL RULES OF GENERAL APPLICATION.... International Trade Commission §§ 201.152-201.159 [Reserved] ...

  20. 19 CFR 201.152-201.159 - [Reserved

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 19 Customs Duties 3 2014-04-01 2014-04-01 false [Reserved] 201.152-201.159 Section 201.152-201.159 Customs Duties UNITED STATES INTERNATIONAL TRADE COMMISSION GENERAL RULES OF GENERAL APPLICATION.... International Trade Commission §§ 201.152-201.159 [Reserved] ...

  1. 19 CFR 201.152-201.159 - [Reserved

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 19 Customs Duties 3 2013-04-01 2013-04-01 false [Reserved] 201.152-201.159 Section 201.152-201.159 Customs Duties UNITED STATES INTERNATIONAL TRADE COMMISSION GENERAL RULES OF GENERAL APPLICATION.... International Trade Commission §§ 201.152-201.159 [Reserved] ...

  2. 19 CFR 201.152-201.159 - [Reserved

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 19 Customs Duties 3 2012-04-01 2012-04-01 false [Reserved] 201.152-201.159 Section 201.152-201.159 Customs Duties UNITED STATES INTERNATIONAL TRADE COMMISSION GENERAL RULES OF GENERAL APPLICATION.... International Trade Commission §§ 201.152-201.159 [Reserved] ...

  3. 33 CFR 159.14 - Application for certification.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Application for certification. 159.14 Section 159.14 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Certification Procedures § 159.14 Application for...

  4. 45 CFR 2301.152-2301.159 - [Reserved

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 45 Public Welfare 4 2010-10-01 2010-10-01 false [Reserved] 2301.152-2301.159 Section 2301.152-2301.159 Public Welfare Regulations Relating to Public Welfare (Continued) ARCTIC RESEARCH COMMISSION... STATES ARCTIC RESEARCH COMMISSION §§ 2301.152-2301.159 [Reserved] ...

  5. 45 CFR 2301.152-2301.159 - [Reserved

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 45 Public Welfare 4 2011-10-01 2011-10-01 false [Reserved] 2301.152-2301.159 Section 2301.152-2301.159 Public Welfare Regulations Relating to Public Welfare (Continued) ARCTIC RESEARCH COMMISSION... STATES ARCTIC RESEARCH COMMISSION §§ 2301.152-2301.159 [Reserved] ...

  6. 47 CFR 15.9 - Prohibition against eavesdropping.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 47 Telecommunication 1 2010-10-01 2010-10-01 false Prohibition against eavesdropping. 15.9 Section 15.9 Telecommunication FEDERAL COMMUNICATIONS COMMISSION GENERAL RADIO FREQUENCY DEVICES General § 15.9 Prohibition against eavesdropping. Except for the operations of law enforcement officers conducted...

  7. 32 CFR 159.4 - Policy.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 32 National Defense 1 2011-07-01 2011-07-01 false Policy. 159.4 Section 159.4 National Defense...) Geographic Combatant Commanders will provide tailored PSC guidance and procedures for the operational... standards set forth by the geographic Combatant Commander in accordance with paragraph (b) of this section...

  8. 36 CFR 909.152-909.159 - [Reserved

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 36 Parks, Forests, and Public Property 3 2010-07-01 2010-07-01 false [Reserved] 909.152-909.159 Section 909.152-909.159 Parks, Forests, and Public Property PENNSYLVANIA AVENUE DEVELOPMENT CORPORATION... PENNSYLVANIA AVENUE DEVELOPMENT CORPORATION §§ 909.152-909.159 [Reserved] ...

  9. 33 CFR 159.201 - Recognition of facilities.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Recognition of facilities. 159.201 Section 159.201 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Recognition of Facilities § 159.201 Recognition of facilities...

  10. 33 CFR 159.131 - Safety: Incinerating device.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Safety: Incinerating device. 159.131 Section 159.131 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.131 Safety...

  11. PROCESS OF RECOVERING ZIRCONIUM VALUES FROM HAFNIUM VALUES BY SOLVENT EXTRACTION WITH AN ALKYL PHOSPHATE

    DOEpatents

    Peppard, D.F.

    1960-02-01

    A process of separating hafnium nitrate from zirconium nitrate contained in a nitric acid solution by selectively. extracting the zirconium nitrate with a water-immiscible alkyl phosphate is reported.

  12. 45 CFR 2490.152-2490.159 - [Reserved

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 45 Public Welfare 4 2011-10-01 2011-10-01 false [Reserved] 2490.152-2490.159 Section 2490.152-2490.159 Public Welfare Regulations Relating to Public Welfare (Continued) JAMES MADISON MEMORIAL... CONDUCTED BY THE JAMES MADISON MEMORIAL FELLOWSHIP FOUNDATION §§ 2490.152-2490.159 [Reserved] ...

  13. 45 CFR 2490.152-2490.159 - [Reserved

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 45 Public Welfare 4 2012-10-01 2012-10-01 false [Reserved] 2490.152-2490.159 Section 2490.152-2490.159 Public Welfare Regulations Relating to Public Welfare (Continued) JAMES MADISON MEMORIAL... CONDUCTED BY THE JAMES MADISON MEMORIAL FELLOWSHIP FOUNDATION §§ 2490.152-2490.159 [Reserved] ...

  14. 45 CFR 2490.152-2490.159 - [Reserved

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 45 Public Welfare 4 2014-10-01 2014-10-01 false [Reserved] 2490.152-2490.159 Section 2490.152-2490.159 Public Welfare Regulations Relating to Public Welfare (Continued) JAMES MADISON MEMORIAL... CONDUCTED BY THE JAMES MADISON MEMORIAL FELLOWSHIP FOUNDATION §§ 2490.152-2490.159 [Reserved] ...

  15. 45 CFR 2490.152-2490.159 - [Reserved

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 45 Public Welfare 4 2013-10-01 2013-10-01 false [Reserved] 2490.152-2490.159 Section 2490.152-2490.159 Public Welfare Regulations Relating to Public Welfare (Continued) JAMES MADISON MEMORIAL... CONDUCTED BY THE JAMES MADISON MEMORIAL FELLOWSHIP FOUNDATION §§ 2490.152-2490.159 [Reserved] ...

  16. 33 CFR 159.115 - Temperature range test.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Temperature range test. 159.115 Section 159.115 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.115 Temperature range test. (a...

  17. 33 CFR 159.4 - Incorporation by reference.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Incorporation by reference. 159.4 Section 159.4 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES General § 159.4 Incorporation by reference. (a) Certain material is...

  18. 33 CFR 159.121 - Sewage processing test.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Sewage processing test. 159.121 Section 159.121 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.121 Sewage processing test. (a...

  19. 33 CFR 159.4 - Incorporation by reference.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Incorporation by reference. 159.4 Section 159.4 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES General § 159.4 Incorporation by reference. (a) Certain material is...

  20. 33 CFR 159.97 - Safety: inspected vessels.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Safety: inspected vessels. 159.97 Section 159.97 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.97 Safety: inspected vessels...

  1. 45 CFR 2490.152-2490.159 - [Reserved

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 45 Public Welfare 4 2010-10-01 2010-10-01 false [Reserved] 2490.152-2490.159 Section 2490.152-2490.159 Public Welfare Regulations Relating to Public Welfare (Continued) JAMES MADISON MEMORIAL... CONDUCTED BY THE JAMES MADISON MEMORIAL FELLOWSHIP FOUNDATION §§ 2490.152-2490.159 [Reserved] ...

  2. 32 CFR 159.3 - Definitions.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... weapons for self defense. 3 Available at http://www.dtic.mil/whs/directives/corres/pdf/302041p.pdf. PSC... 32 National Defense 1 2013-07-01 2013-07-01 false Definitions. 159.3 Section 159.3 National Defense Department of Defense OFFICE OF THE SECRETARY OF DEFENSE SECURITY PRIVATE SECURITY CONTRACTORS...

  3. 32 CFR 159.3 - Definitions.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... policies related to personnel allowed to carry weapons for self defense. 2 Available at http://www.dtic.mil... 32 National Defense 1 2011-07-01 2011-07-01 false Definitions. 159.3 Section 159.3 National Defense Department of Defense OFFICE OF THE SECRETARY OF DEFENSE SECURITY PRIVATE SECURITY CONTRACTORS...

  4. 32 CFR 159.3 - Definitions.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... policies related to personnel allowed to carry weapons for self defense. 2 Available at http://www.dtic.mil... 32 National Defense 1 2010-07-01 2010-07-01 false Definitions. 159.3 Section 159.3 National Defense Department of Defense OFFICE OF THE SECRETARY OF DEFENSE SECURITY PRIVATE SECURITY CONTRACTORS...

  5. 32 CFR 159.3 - Definitions.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... weapons for self defense. 3 Available at http://www.dtic.mil/whs/directives/corres/pdf/302041p.pdf. PSC... 32 National Defense 1 2012-07-01 2012-07-01 false Definitions. 159.3 Section 159.3 National Defense Department of Defense OFFICE OF THE SECRETARY OF DEFENSE SECURITY PRIVATE SECURITY CONTRACTORS...

  6. 32 CFR 159.3 - Definitions.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... weapons for self defense. 3 Available at http://www.dtic.mil/whs/directives/corres/pdf/302041p.pdf. PSC... 32 National Defense 1 2014-07-01 2014-07-01 false Definitions. 159.3 Section 159.3 National Defense Department of Defense OFFICE OF THE SECRETARY OF DEFENSE SECURITY PRIVATE SECURITY CONTRACTORS...

  7. 32 CFR 159.4 - Policy.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 32 National Defense 1 2012-07-01 2012-07-01 false Policy. 159.4 Section 159.4 National Defense... contingency operation. (b) Geographic Combatant Commanders will provide tailored PSC guidance and procedures... instructions for non-DoD PSCs and their personnel consistent with the standards set forth by the geographic...

  8. 32 CFR 159.4 - Policy.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 32 National Defense 1 2014-07-01 2014-07-01 false Policy. 159.4 Section 159.4 National Defense... contingency operation. (b) Geographic Combatant Commanders will provide tailored PSC guidance and procedures... instructions for non-DoD PSCs and their personnel consistent with the standards set forth by the geographic...

  9. 32 CFR 159.4 - Policy.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 32 National Defense 1 2013-07-01 2013-07-01 false Policy. 159.4 Section 159.4 National Defense... contingency operation. (b) Geographic Combatant Commanders will provide tailored PSC guidance and procedures... instructions for non-DoD PSCs and their personnel consistent with the standards set forth by the geographic...

  10. 33 CFR 159.61 - Vents.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Vents. 159.61 Section 159.61 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE... to minimize clogging by either the contents of the tank or climatic conditions such as snow or ice. ...

  11. 33 CFR 159.61 - Vents.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 2 2014-07-01 2014-07-01 false Vents. 159.61 Section 159.61 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE... to minimize clogging by either the contents of the tank or climatic conditions such as snow or ice. ...

  12. 33 CFR 159.61 - Vents.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 2 2012-07-01 2012-07-01 false Vents. 159.61 Section 159.61 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE... to minimize clogging by either the contents of the tank or climatic conditions such as snow or ice. ...

  13. 33 CFR 159.61 - Vents.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 2 2013-07-01 2013-07-01 false Vents. 159.61 Section 159.61 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE... to minimize clogging by either the contents of the tank or climatic conditions such as snow or ice. ...

  14. 7 CFR 762.159 - Pledging of guarantee.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 7 Agriculture 7 2014-01-01 2014-01-01 false Pledging of guarantee. 762.159 Section 762.159 Agriculture Regulations of the Department of Agriculture (Continued) FARM SERVICE AGENCY, DEPARTMENT OF AGRICULTURE SPECIAL PROGRAMS GUARANTEED FARM LOANS § 762.159 Pledging of guarantee. A lender may pledge all or...

  15. 34 CFR 300.158-300.159 - [Reserved

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 34 Education 2 2012-07-01 2012-07-01 false [Reserved] 300.158-300.159 Section 300.158-300.159 Education Regulations of the Offices of the Department of Education (Continued) OFFICE OF SPECIAL EDUCATION... CHILDREN WITH DISABILITIES State Eligibility Additional Eligibility Requirements §§ 300.158-300.159...

  16. 34 CFR 300.158-300.159 - [Reserved

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 34 Education 2 2013-07-01 2013-07-01 false [Reserved] 300.158-300.159 Section 300.158-300.159 Education Regulations of the Offices of the Department of Education (Continued) OFFICE OF SPECIAL EDUCATION... CHILDREN WITH DISABILITIES State Eligibility Additional Eligibility Requirements §§ 300.158-300.159...

  17. 34 CFR 300.158-300.159 - [Reserved

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 34 Education 2 2014-07-01 2013-07-01 true [Reserved] 300.158-300.159 Section 300.158-300.159 Education Regulations of the Offices of the Department of Education (Continued) OFFICE OF SPECIAL EDUCATION... CHILDREN WITH DISABILITIES State Eligibility Additional Eligibility Requirements §§ 300.158-300.159...

  18. 33 CFR 159.63 - Access to parts.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Access to parts. 159.63 Section 159.63 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.63 Access to parts. Each part of...

  19. 33 CFR 159.51 - Purpose and scope.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Purpose and scope. 159.51 Section 159.51 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.51 Purpose and scope. (a) This...

  20. 50 CFR 550.152-550.159 - [Reserved

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 50 Wildlife and Fisheries 7 2010-10-01 2010-10-01 false [Reserved] 550.152-550.159 Section 550.152-550.159 Wildlife and Fisheries MARINE MAMMAL COMMISSION ENFORCEMENT OF NONDISCRIMINATION ON THE BASIS OF HANDICAP IN PROGRAMS OR ACTIVITIES CONDUCTED BY MARINE MAMMAL COMMISSION §§ 550.152-550.159...

  1. 49 CFR 28.152-28.159 - [Reserved

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 1 2010-10-01 2010-10-01 false [Reserved] 28.152-28.159 Section 28.152-28.159 Transportation Office of the Secretary of Transportation ENFORCEMENT OF NONDISCRIMINATION ON THE BASIS OF HANDICAP IN PROGRAMS OR ACTIVITIES CONDUCTED BY THE DEPARTMENT OF TRANSPORTATION §§ 28.152-28.159 [Reserved] ...

  2. 45 CFR 159.100 - Basis and scope.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 45 Public Welfare 1 2010-10-01 2010-10-01 false Basis and scope. 159.100 Section 159.100 Public Welfare DEPARTMENT OF HEALTH AND HUMAN SERVICES REQUIREMENTS RELATING TO HEALTH CARE ACCESS HEALTH CARE REFORM INSURANCE WEB PORTAL § 159.100 Basis and scope. This part establishes provisions governing a Web...

  3. Ferroelectric memory based on molybdenum disulfide and ferroelectric hafnium oxide

    NASA Astrophysics Data System (ADS)

    Yap, Wui Chung; Jiang, Hao; Xia, Qiangfei; Zhu, Wenjuan

    Recently, ferroelectric hafnium oxide (HfO2) was discovered as a new type of ferroelectric material with the advantages of high coercive field, excellent scalability (down to 2.5 nm), and good compatibility with CMOS processing. In this work, we demonstrate, for the first time, 2D ferroelectric memories with molybdenum disulfide (MoS2) as the channel material and aluminum doped HfO2 as the ferroelectric gate dielectric. A 16 nm thick layer of HfO2, doped with 5.26% aluminum, was deposited via atomic layer deposition (ALD), then subjected to rapid thermal annealing (RTA) at 1000 °C, and the polarization-voltage characteristics of the resulting metal-ferroelectric-metal (MFM) capacitors were measured, showing a remnant polarization of 0.6 μC/cm2. Ferroelectric memories with embedded ferroelectric hafnium oxide stacks and monolayer MoS2 were fabricated. The transfer characteristics after program and erase pulses revealed a clear ferroelectric memory window. In addition, endurance (up to 10,000 cycles) of the devices were tested and effects associated with ferroelectric materials, such as the wake-up effect and polarization fatigue, were observed. This research can potentially lead to advances of 2D materials in low-power logic and memory applications.

  4. 19 CFR 159.3 - Rounding of fractions.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 19 Customs Duties 2 2010-04-01 2010-04-01 false Rounding of fractions. 159.3 Section 159.3 Customs... (CONTINUED) LIQUIDATION OF DUTIES General Provisions § 159.3 Rounding of fractions. (a) Value. In the... cents or more, the lower fractions shall be dropped, and if it is necessary to take up as whole dollars...

  5. 40 CFR 159.170 - Human epidemiological and exposure studies.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... studies. 159.170 Section 159.170 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED... Information § 159.170 Human epidemiological and exposure studies. Information must be submitted which concerns any study that a person described in § 159.158(a) has concluded, or might reasonably conclude, shows...

  6. 40 CFR 205.159 - Testing by the Administrator.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 25 2011-07-01 2011-07-01 false Testing by the Administrator. 205.159 Section 205.159 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) NOISE ABATEMENT PROGRAMS TRANSPORTATION EQUIPMENT NOISE EMISSION CONTROLS Motorcycles § 205.159 Testing by the...

  7. 40 CFR 205.159 - Testing by the Administrator.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 24 2010-07-01 2010-07-01 false Testing by the Administrator. 205.159 Section 205.159 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) NOISE ABATEMENT PROGRAMS TRANSPORTATION EQUIPMENT NOISE EMISSION CONTROLS Motorcycles § 205.159 Testing by the...

  8. 7 CFR 457.159 - Stonefruit crop insurance provisions.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 7 Agriculture 6 2010-01-01 2010-01-01 false Stonefruit crop insurance provisions. 457.159 Section 457.159 Agriculture Regulations of the Department of Agriculture (Continued) FEDERAL CROP INSURANCE CORPORATION, DEPARTMENT OF AGRICULTURE COMMON CROP INSURANCE REGULATIONS § 457.159 Stonefruit crop insurance...

  9. 33 CFR 159.119 - Operability test; temperature range.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Operability test; temperature range. 159.119 Section 159.119 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.119...

  10. 33 CFR 159.16 - Authorization to label devices.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Authorization to label devices. 159.16 Section 159.16 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Certification Procedures § 159.16 Authorization to label...

  11. 33 CFR 159.17 - Changes to certified devices.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Changes to certified devices. 159.17 Section 159.17 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Certification Procedures § 159.17 Changes to certified...

  12. Molecular Cloud Structures and Massive Star Formation in N159

    NASA Astrophysics Data System (ADS)

    Nayak, O.; Meixner, M.; Fukui, Y.; Tachihara, K.; Onishi, T.; Saigo, K.; Tokuda, K.; Harada, R.

    2018-02-01

    The N159 star-forming region is one of the most massive giant molecular clouds (GMCs) in the Large Magellanic Cloud (LMC). We show the 12CO, 13CO, CS molecular gas lines observed with ALMA in N159 west (N159W) and N159 east (N159E). We relate the structure of the gas clumps to the properties of 24 massive young stellar objects (YSOs) that include 10 newly identified YSOs based on our search. We use dendrogram analysis to identify properties of the molecular clumps, such as flux, mass, linewidth, size, and virial parameter. We relate the YSO properties to the molecular gas properties. We find that the CS gas clumps have a steeper size–linewidth relation than the 12CO or 13CO gas clumps. This larger slope could potentially occur if the CS gas is tracing shocks. The virial parameters of the 13CO gas clumps in N159W and N159E are low (<1). The threshold for massive star formation in N159W is 501 M ⊙ pc‑2, and the threshold for massive star formation in N159E is 794 M ⊙ pc‑2. We find that 13CO is more photodissociated in N159E than N159W. The most massive YSO in N159E has cleared out a molecular gas hole in its vicinity. All the massive YSO candidates in N159E have a more evolved spectral energy distribution type in comparison to the YSO candidates in N159W. These differences lead us to conclude that the giant molecular cloud complex in N159E is more evolved than the giant molecular cloud complex in N159W.

  13. Hafnium nitride buffer layers for growth of GaN on silicon

    DOEpatents

    Armitage, Robert D.; Weber, Eicke R.

    2005-08-16

    Gallium nitride is grown by plasma-assisted molecular-beam epitaxy on (111) and (001) silicon substrates using hafnium nitride buffer layers. Wurtzite GaN epitaxial layers are obtained on both the (111) and (001) HfN/Si surfaces, with crack-free thickness up to 1.2 {character pullout}m. However, growth on the (001) surface results in nearly stress-free films, suggesting that much thicker crack-free layers could be obtained.

  14. 49 CFR 173.159 - Batteries, wet.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 2 2010-10-01 2010-10-01 false Batteries, wet. 173.159 Section 173.159... Batteries, wet. (a) Electric storage batteries, containing electrolyte acid or alkaline corrosive battery fluid (wet batteries), may not be packed with other materials except as provided in paragraphs (g) and...

  15. 9 CFR 381.159 - Poultry rolls.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 9 Animals and Animal Products 2 2010-01-01 2010-01-01 false Poultry rolls. 381.159 Section 381.159 Animals and Animal Products FOOD SAFETY AND INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE AGENCY... CERTIFICATION POULTRY PRODUCTS INSPECTION REGULATIONS Definitions and Standards of Identity or Composition § 381...

  16. 9 CFR 381.159 - Poultry rolls.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 9 Animals and Animal Products 2 2011-01-01 2011-01-01 false Poultry rolls. 381.159 Section 381.159 Animals and Animal Products FOOD SAFETY AND INSPECTION SERVICE, DEPARTMENT OF AGRICULTURE AGENCY... CERTIFICATION POULTRY PRODUCTS INSPECTION REGULATIONS Definitions and Standards of Identity or Composition § 381...

  17. 33 CFR 159.75 - Overcurrent protection.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Overcurrent protection. 159.75...) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.75 Overcurrent protection. Overcurrent protection must be provided within the unit to protect subcomponents of the device if the...

  18. 49 CFR 173.159 - Batteries, wet.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 49 Transportation 2 2014-10-01 2014-10-01 false Batteries, wet. 173.159 Section 173.159... Batteries, wet. (a) Electric storage batteries, containing electrolyte acid or alkaline corrosive battery fluid (wet batteries), may not be packed with other materials except as provided in paragraphs (g) and...

  19. 49 CFR 173.159 - Batteries, wet.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 49 Transportation 2 2012-10-01 2012-10-01 false Batteries, wet. 173.159 Section 173.159... Batteries, wet. (a) Electric storage batteries, containing electrolyte acid or alkaline corrosive battery fluid (wet batteries), may not be packed with other materials except as provided in paragraphs (g) and...

  20. 49 CFR 173.159 - Batteries, wet.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 49 Transportation 2 2013-10-01 2013-10-01 false Batteries, wet. 173.159 Section 173.159... Batteries, wet. (a) Electric storage batteries, containing electrolyte acid or alkaline corrosive battery fluid (wet batteries), may not be packed with other materials except as provided in paragraphs (g) and...

  1. 49 CFR 173.159 - Batteries, wet.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 49 Transportation 2 2011-10-01 2011-10-01 false Batteries, wet. 173.159 Section 173.159... Batteries, wet. (a) Electric storage batteries, containing electrolyte acid or alkaline corrosive battery fluid (wet batteries), may not be packed with other materials except as provided in paragraphs (g) and...

  2. 33 CFR 159.129 - Safety: Ignition prevention test.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Safety: Ignition prevention test. 159.129 Section 159.129 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.129 Safety: Ignition...

  3. 33 CFR 159.7 - Requirements for vessel operators.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Requirements for vessel operators. 159.7 Section 159.7 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES General § 159.7 Requirements for vessel operators. (a) No...

  4. 33 CFR 159.5 - Requirements for vessel manufacturers.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Requirements for vessel manufacturers. 159.5 Section 159.5 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES General § 159.5 Requirements for vessel manufacturers. No...

  5. 33 CFR 159.7 - Requirements for vessel operators.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Requirements for vessel operators. 159.7 Section 159.7 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES General § 159.7 Requirements for vessel operators. (a) No...

  6. 33 CFR 159.5 - Requirements for vessel manufacturers.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Requirements for vessel manufacturers. 159.5 Section 159.5 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES General § 159.5 Requirements for vessel manufacturers. No...

  7. Studies on Optical and Electrical Properties of Hafnium Oxide Nanoparticles

    NASA Astrophysics Data System (ADS)

    Jayaraman, Venkatachalam; Sagadevan, Suresh; Sudhakar, Rajesh

    2017-07-01

    In this paper, the synthesis and physico-chemical properties of hafnium oxide nanoparticles (HfO2 NPs) are analyzed and reported. The synthesis was carried out by the precipitation route by using hafnium tetrachloride (HfCl4) as precursor material with potassium hydroxide (KOH) dissolved in Millipore water. In the precipitation technique, the chemical reaction is comparatively simple, low-cost and non-toxic compared to other synthetic methods. The synthesized HfO2 NPs were characterized by using powder x-ray diffraction (PXRD), ultraviolet-visible (UV-Vis) spectroscopy, Raman analysis, and high-resolution transmission electron microscopy (HRTEM). The monoclinic structure of the HfO2 NPs was resolved utilizing x-ray diffraction (XRD). The optical properties were studied from the UV-Vis absorption spectrum. The optical band gap of the HfO2NPs was observed to be 5.1 eV. The Raman spectrum shows the presence of HfO2 NPs. The HRTEM image showed that the HfO2 NPs were of spherical shape with an average particle size of around 28 nm. The energy-dispersive x-ray spectroscopy (EDS) spectrum obviously demonstrated the presence of HfO2 NPs. Analysis and studies on the dielectric properties of the HfO2 NPs such as the dielectric constant, the dielectric loss, and alternating current (AC) conductivity were carried out at varying frequencies and temperatures.

  8. Hafnium isotope evidence for a transition in the dynamics of continental growth 3.2 Gyr ago.

    PubMed

    Næraa, T; Scherstén, A; Rosing, M T; Kemp, A I S; Hoffmann, J E; Kokfelt, T F; Whitehouse, M J

    2012-05-30

    Earth's lithosphere probably experienced an evolution towards the modern plate tectonic regime, owing to secular changes in mantle temperature. Radiogenic isotope variations are interpreted as evidence for the declining rates of continental crustal growth over time, with some estimates suggesting that over 70% of the present continental crustal reservoir was extracted by the end of the Archaean eon. Patterns of crustal growth and reworking in rocks younger than three billion years (Gyr) are thought to reflect the assembly and break-up of supercontinents by Wilson cycle processes and mark an important change in lithosphere dynamics. In southern West Greenland numerous studies have, however, argued for subduction settings and crust growth by arc accretion back to 3.8 Gyr ago, suggesting that modern-day tectonic regimes operated during the formation of the earliest crustal rock record. Here we report in situ uranium-lead, hafnium and oxygen isotope data from zircons of basement rocks in southern West Greenland across the critical time period during which modern-like tectonic regimes could have initiated. Our data show pronounced differences in the hafnium isotope-time patterns across this interval, requiring changes in the characteristics of the magmatic protolith. The observations suggest that 3.9-3.5-Gyr-old rocks differentiated from a >3.9-Gyr-old source reservoir with a chondritic to slightly depleted hafnium isotope composition. In contrast, rocks formed after 3.2 Gyr ago register the first additions of juvenile depleted material (that is, new mantle-derived crust) since 3.9 Gyr ago, and are characterized by striking shifts in hafnium isotope ratios similar to those shown by Phanerozoic subduction-related orogens. These data suggest a transitional period 3.5-3.2 Gyr ago from an ancient (3.9-3.5 Gyr old) crustal evolutionary regime unlike that of modern plate tectonics to a geodynamic setting after 3.2 Gyr ago that involved juvenile crust generation by plate

  9. 43 CFR 15.9 - Collection of scientific specimens.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 43 Public Lands: Interior 1 2012-10-01 2011-10-01 true Collection of scientific specimens. 15.9 Section 15.9 Public Lands: Interior Office of the Secretary of the Interior KEY LARGO CORAL REEF PRESERVE § 15.9 Collection of scientific specimens. Collection of natural objects and marine life for...

  10. 43 CFR 15.9 - Collection of scientific specimens.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 43 Public Lands: Interior 1 2013-10-01 2013-10-01 false Collection of scientific specimens. 15.9 Section 15.9 Public Lands: Interior Office of the Secretary of the Interior KEY LARGO CORAL REEF PRESERVE § 15.9 Collection of scientific specimens. Collection of natural objects and marine life for...

  11. 43 CFR 15.9 - Collection of scientific specimens.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 43 Public Lands: Interior 1 2014-10-01 2014-10-01 false Collection of scientific specimens. 15.9 Section 15.9 Public Lands: Interior Office of the Secretary of the Interior KEY LARGO CORAL REEF PRESERVE § 15.9 Collection of scientific specimens. Collection of natural objects and marine life for...

  12. 43 CFR 15.9 - Collection of scientific specimens.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 43 Public Lands: Interior 1 2010-10-01 2010-10-01 false Collection of scientific specimens. 15.9 Section 15.9 Public Lands: Interior Office of the Secretary of the Interior KEY LARGO CORAL REEF PRESERVE § 15.9 Collection of scientific specimens. Collection of natural objects and marine life for...

  13. 43 CFR 15.9 - Collection of scientific specimens.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 43 Public Lands: Interior 1 2011-10-01 2011-10-01 false Collection of scientific specimens. 15.9 Section 15.9 Public Lands: Interior Office of the Secretary of the Interior KEY LARGO CORAL REEF PRESERVE § 15.9 Collection of scientific specimens. Collection of natural objects and marine life for...

  14. 46 CFR 201.159 - Decisions; contents and service.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 46 Shipping 8 2012-10-01 2012-10-01 false Decisions; contents and service. 201.159 Section 201.159 Shipping MARITIME ADMINISTRATION, DEPARTMENT OF TRANSPORTATION POLICY, PRACTICE AND PROCEDURE RULES OF PRACTICE AND PROCEDURE Briefs, Requests for Findings, Decisions, Exceptions (Rule 16) § 201.159 Decisions; contents and service. All initial,...

  15. 19 CFR 159.38 - Rates for estimated duties.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... TREASURY (CONTINUED) LIQUIDATION OF DUTIES Conversion of Foreign Currency § 159.38 Rates for estimated duties. For purposes of calculating estimated duties, the port director shall use the rate or rates... 19 Customs Duties 2 2010-04-01 2010-04-01 false Rates for estimated duties. 159.38 Section 159.38...

  16. 46 CFR 159.001-2 - Right of appeal.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 6 2010-10-01 2010-10-01 false Right of appeal. 159.001-2 Section 159.001-2 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) EQUIPMENT, CONSTRUCTION, AND MATERIALS: SPECIFICATIONS AND APPROVAL APPROVAL OF EQUIPMENT AND MATERIALS General § 159.001-2 Right of appeal. Any person...

  17. 33 CFR 159.85 - Sewage removal.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Sewage removal. 159.85 Section...) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.85 Sewage removal. The device must be designed for efficient removal of nearly all of the liquid and solids in the sewage retention...

  18. 33 CFR 159.109 - Pressure test.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... the tank, whichever is greater. The tank must hold the water at this pressure for 1 hour with no... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Pressure test. 159.109 Section...) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.109 Pressure test. Any sewage...

  19. 29 CFR 2570.159 - Review by the Secretary.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 29 Labor 9 2012-07-01 2012-07-01 false Review by the Secretary. 2570.159 Section 2570.159 Labor...(40) § 2570.159 Review by the Secretary. (a) A request for review by the Secretary of an appealable... Secretary shall state with specificity the issue(s) in the administrative law judge's final decision upon...

  20. 29 CFR 2570.159 - Review by the Secretary.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 29 Labor 9 2014-07-01 2014-07-01 false Review by the Secretary. 2570.159 Section 2570.159 Labor...(40) § 2570.159 Review by the Secretary. (a) A request for review by the Secretary of an appealable... Secretary shall state with specificity the issue(s) in the administrative law judge's final decision upon...

  1. 33 CFR 159.311 - Safety exception.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Safety exception. 159.311 Section... Operations § 159.311 Safety exception. The regulations in this subpart shall not apply to discharges made for the purpose of securing the safety of the cruise vessel or saving life at sea, provided that all...

  2. 33 CFR 159.311 - Safety exception.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Safety exception. 159.311 Section... Operations § 159.311 Safety exception. The regulations in this subpart shall not apply to discharges made for the purpose of securing the safety of the cruise vessel or saving life at sea, provided that all...

  3. 19 CFR 159.31 - Rates to be used.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... (CONTINUED) LIQUIDATION OF DUTIES Conversion of Foreign Currency § 159.31 Rates to be used. Except as otherwise specified in this subpart, no rate or rates of exchange shall be used to convert foreign currency... 19 Customs Duties 2 2010-04-01 2010-04-01 false Rates to be used. 159.31 Section 159.31 Customs...

  4. Slow DNA Transport through Nanopores in Hafnium Oxide Membranes

    PubMed Central

    Bell, David C.; Cohen-Karni, Tzahi; Rosenstein, Jacob K.; Wanunu, Meni

    2016-01-01

    We present a study of double- and single-stranded DNA transport through nanopores fabricated in ultrathin (2–7 nm thick) free-standing hafnium oxide (HfO2) membranes. The high chemical stability of ultrathin HfO2 enables long-lived experiments with <2 nm diameter pores that last several hours, in which we observe >50 000 DNA translocations with no detectable pore expansion. Mean DNA velocities are slower than velocities through comparable silicon nitride pores, providing evidence that HfO2 nanopores have favorable physicochemical interactions with nucleic acids that can be leveraged to slow down DNA in a nanopore. PMID:24083444

  5. 33 CFR 159.121 - Sewage processing test.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... crevices that could come in contact with a person using the device or servicing the device in accordance..., the device must be tilted to the maximum angles specified by the manufacturer under §§ 159.55 and 159...

  6. Cathodoluminescence Study of Hafnium Oxide

    NASA Astrophysics Data System (ADS)

    Purcell, Emily; Hengehold, Robert; McClory, John

    2011-10-01

    Hafnium dioxide (HfO2) is increasingly being used in place of silicon oxide as a gate insulator in field effect transistors. This is primarily due to its high dielectric constant, κ, of 25. Samples of HfO2 were grown by either atomic layer deposition (ALD) or pulsed laser deposition (PLD), with the PLD samples having assorted substrate temperatures during deposition (300 C, 500 C, and 750 C). Cathodoluminescence (CL) was chosen as the technique used for studying these HfO2 samples. The CL system used was capable of beam energies ranging from 1 keV to 20 keV and beam currents ranging from 10 μA to 50 μA. A Monte Carlo calculation using CASINO software was performed in order to determine the beam energy for the desired depth of penetration. Measurements were taken at sample temperatures ranging from 7K (closed cycled cryostat) to 300K (room temperature), as well as at various beam energies and beam currents. Comparison will be made between the PLD and ALD spectra.

  7. 33 CFR 159.127 - Safety coliform count: Recirculating devices.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Safety coliform count: Recirculating devices. 159.127 Section 159.127 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159...

  8. Self-cleaning and surface chemical reactions during hafnium dioxide atomic layer deposition on indium arsenide.

    PubMed

    Timm, Rainer; Head, Ashley R; Yngman, Sofie; Knutsson, Johan V; Hjort, Martin; McKibbin, Sarah R; Troian, Andrea; Persson, Olof; Urpelainen, Samuli; Knudsen, Jan; Schnadt, Joachim; Mikkelsen, Anders

    2018-04-12

    Atomic layer deposition (ALD) enables the ultrathin high-quality oxide layers that are central to all modern metal-oxide-semiconductor circuits. Crucial to achieving superior device performance are the chemical reactions during the first deposition cycle, which could ultimately result in atomic-scale perfection of the semiconductor-oxide interface. Here, we directly observe the chemical reactions at the surface during the first cycle of hafnium dioxide deposition on indium arsenide under realistic synthesis conditions using photoelectron spectroscopy. We find that the widely used ligand exchange model of the ALD process for the removal of native oxide on the semiconductor and the simultaneous formation of the first hafnium dioxide layer must be significantly revised. Our study provides substantial evidence that the efficiency of the self-cleaning process and the quality of the resulting semiconductor-oxide interface can be controlled by the molecular adsorption process of the ALD precursors, rather than the subsequent oxide formation.

  9. 46 CFR 159.005-13 - Equipment or material: Approval.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 6 2011-10-01 2011-10-01 false Equipment or material: Approval. 159.005-13 Section 159.005-13 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) EQUIPMENT, CONSTRUCTION, AND MATERIALS: SPECIFICATIONS AND APPROVAL APPROVAL OF EQUIPMENT AND MATERIALS Approval Procedures § 159.005-13...

  10. 33 CFR 159.123 - Coliform test: Type I devices.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Coliform test: Type I devices. 159.123 Section 159.123 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.123 Coliform test...

  11. 33 CFR 159.111 - Pressure and vacuum pulse test.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Pressure and vacuum pulse test. 159.111 Section 159.111 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.111 Pressure and...

  12. 33 CFR 159.126 - Coliform test: Type II devices.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Coliform test: Type II devices. 159.126 Section 159.126 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.126 Coliform test...

  13. 33 CFR 159.97 - Safety: inspected vessels.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 2 2012-07-01 2012-07-01 false Safety: inspected vessels. 159.97...) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.97 Safety: inspected vessels. The Commanding Officer, USCG Marine Safety Center, approves the design and construction of devices to...

  14. 33 CFR 159.97 - Safety: inspected vessels.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 2 2014-07-01 2014-07-01 false Safety: inspected vessels. 159.97...) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.97 Safety: inspected vessels. The Commanding Officer, USCG Marine Safety Center, approves the design and construction of devices to...

  15. 33 CFR 159.97 - Safety: inspected vessels.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 2 2013-07-01 2013-07-01 false Safety: inspected vessels. 159.97...) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.97 Safety: inspected vessels. The Commanding Officer, USCG Marine Safety Center, approves the design and construction of devices to...

  16. 33 CFR 159.97 - Safety: inspected vessels.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Safety: inspected vessels. 159.97...) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.97 Safety: inspected vessels. The Commanding Officer, USCG Marine Safety Center, approves the design and construction of devices to...

  17. 36 CFR 223.159 - Scope and applicability.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 36 Parks, Forests, and Public Property 2 2014-07-01 2014-07-01 false Scope and applicability. 223.159 Section 223.159 Parks, Forests, and Public Property FOREST SERVICE, DEPARTMENT OF AGRICULTURE SALE AND DISPOSAL OF NATIONAL FOREST SYSTEM TIMBER, SPECIAL FOREST PRODUCTS, AND FOREST BOTANICAL PRODUCTS...

  18. 36 CFR 223.159 - Scope and applicability.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 36 Parks, Forests, and Public Property 2 2012-07-01 2012-07-01 false Scope and applicability. 223.159 Section 223.159 Parks, Forests, and Public Property FOREST SERVICE, DEPARTMENT OF AGRICULTURE SALE AND DISPOSAL OF NATIONAL FOREST SYSTEM TIMBER, SPECIAL FOREST PRODUCTS, AND FOREST BOTANICAL PRODUCTS...

  19. 36 CFR 223.159 - Scope and applicability.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 36 Parks, Forests, and Public Property 2 2013-07-01 2013-07-01 false Scope and applicability. 223.159 Section 223.159 Parks, Forests, and Public Property FOREST SERVICE, DEPARTMENT OF AGRICULTURE SALE AND DISPOSAL OF NATIONAL FOREST SYSTEM TIMBER, SPECIAL FOREST PRODUCTS, AND FOREST BOTANICAL PRODUCTS...

  20. 36 CFR 223.159 - Scope and applicability.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 36 Parks, Forests, and Public Property 2 2011-07-01 2011-07-01 false Scope and applicability. 223.159 Section 223.159 Parks, Forests, and Public Property FOREST SERVICE, DEPARTMENT OF AGRICULTURE SALE AND DISPOSAL OF NATIONAL FOREST SYSTEM TIMBER, SPECIAL FOREST PRODUCTS, AND FOREST BOTANICAL PRODUCTS...

  1. 22 CFR 1600.152-1600.159 - [Reserved

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 22 Foreign Relations 2 2012-04-01 2009-04-01 true [Reserved] 1600.152-1600.159 Section 1600.152-1600.159 Foreign Relations JAPAN-UNITED STATES FRIENDSHIP COMMISSION ENFORCEMENT OF NONDISCRIMINATION ON THE BASIS OF HANDICAP IN PROGRAMS OR ACTIVITIES CONDUCTED BY THE JAPAN-UNITED STATES FRIENDSHIP...

  2. 22 CFR 1600.152-1600.159 - [Reserved

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 22 Foreign Relations 2 2014-04-01 2014-04-01 false [Reserved] 1600.152-1600.159 Section 1600.152-1600.159 Foreign Relations JAPAN-UNITED STATES FRIENDSHIP COMMISSION ENFORCEMENT OF NONDISCRIMINATION ON THE BASIS OF HANDICAP IN PROGRAMS OR ACTIVITIES CONDUCTED BY THE JAPAN-UNITED STATES FRIENDSHIP...

  3. 22 CFR 1600.152-1600.159 - [Reserved

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 22 Foreign Relations 2 2011-04-01 2009-04-01 true [Reserved] 1600.152-1600.159 Section 1600.152-1600.159 Foreign Relations JAPAN-UNITED STATES FRIENDSHIP COMMISSION ENFORCEMENT OF NONDISCRIMINATION ON THE BASIS OF HANDICAP IN PROGRAMS OR ACTIVITIES CONDUCTED BY THE JAPAN-UNITED STATES FRIENDSHIP...

  4. 22 CFR 1600.152-1600.159 - [Reserved

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 22 Foreign Relations 2 2013-04-01 2009-04-01 true [Reserved] 1600.152-1600.159 Section 1600.152-1600.159 Foreign Relations JAPAN-UNITED STATES FRIENDSHIP COMMISSION ENFORCEMENT OF NONDISCRIMINATION ON THE BASIS OF HANDICAP IN PROGRAMS OR ACTIVITIES CONDUCTED BY THE JAPAN-UNITED STATES FRIENDSHIP...

  5. 22 CFR 1103.152-1103.159 - [Reserved

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 22 Foreign Relations 2 2010-04-01 2010-04-01 true [Reserved] 1103.152-1103.159 Section 1103.152-1103.159 Foreign Relations INTERNATIONAL BOUNDARY AND WATER COMMISSION, UNITED STATES AND MEXICO... CONDUCTED BY INTERNATIONAL BOUNDARY AND WATER COMMISSION, UNITED STATES AND MEXICO, UNITED STATES SECTION...

  6. 33 CFR 159.67 - Electrical component ratings.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 2 2014-07-01 2014-07-01 false Electrical component ratings. 159... (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.67 Electrical component ratings. Electrical components must have current and voltage ratings equal to or greater than the...

  7. 33 CFR 159.67 - Electrical component ratings.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 2 2013-07-01 2013-07-01 false Electrical component ratings. 159... (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.67 Electrical component ratings. Electrical components must have current and voltage ratings equal to or greater than the...

  8. 33 CFR 159.67 - Electrical component ratings.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Electrical component ratings. 159... (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.67 Electrical component ratings. Electrical components must have current and voltage ratings equal to or greater than the...

  9. 33 CFR 159.67 - Electrical component ratings.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Electrical component ratings. 159... (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.67 Electrical component ratings. Electrical components must have current and voltage ratings equal to or greater than the...

  10. 33 CFR 159.67 - Electrical component ratings.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 2 2012-07-01 2012-07-01 false Electrical component ratings. 159... (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.67 Electrical component ratings. Electrical components must have current and voltage ratings equal to or greater than the...

  11. 22 CFR 1600.152-1600.159 - [Reserved

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 22 Foreign Relations 2 2010-04-01 2010-04-01 true [Reserved] 1600.152-1600.159 Section 1600.152-1600.159 Foreign Relations JAPAN-UNITED STATES FRIENDSHIP COMMISSION ENFORCEMENT OF NONDISCRIMINATION ON THE BASIS OF HANDICAP IN PROGRAMS OR ACTIVITIES CONDUCTED BY THE JAPAN-UNITED STATES FRIENDSHIP...

  12. 33 CFR 159.65 - Chemical level indicator.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Chemical level indicator. 159.65...) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.65 Chemical level indicator. The... any chemical that is necessary for its effective operation. (b) A means of indicating when chemicals...

  13. 33 CFR 159.65 - Chemical level indicator.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Chemical level indicator. 159.65...) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.65 Chemical level indicator. The... any chemical that is necessary for its effective operation. (b) A means of indicating when chemicals...

  14. 34 CFR 300.158-300.159 - [Reserved

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 34 Education 2 2011-07-01 2010-07-01 true [Reserved] 300.158-300.159 Section 300.158-300.159 Education Regulations of the Offices of the Department of Education (Continued) OFFICE OF SPECIAL EDUCATION AND REHABILITATIVE SERVICES, DEPARTMENT OF EDUCATION ASSISTANCE TO STATES FOR THE EDUCATION OF...

  15. 34 CFR 300.158-300.159 - [Reserved

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 34 Education 2 2010-07-01 2010-07-01 false [Reserved] 300.158-300.159 Section 300.158-300.159 Education Regulations of the Offices of the Department of Education (Continued) OFFICE OF SPECIAL EDUCATION AND REHABILITATIVE SERVICES, DEPARTMENT OF EDUCATION ASSISTANCE TO STATES FOR THE EDUCATION OF...

  16. 34 CFR 1200.152-1200.159 - [Reserved

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 34 Education 3 2010-07-01 2010-07-01 false [Reserved] 1200.152-1200.159 Section 1200.152-1200.159 Education Regulations of the Offices of the Department of Education (Continued) NATIONAL COUNCIL ON DISABILITY ENFORCEMENT OF NONDISCRIMINATION ON THE BASIS OF HANDICAP IN PROGRAMS OR ACTIVITIES CONDUCTED BY...

  17. 33 CFR 159.65 - Chemical level indicator.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 2 2014-07-01 2014-07-01 false Chemical level indicator. 159.65...) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.65 Chemical level indicator. The... any chemical that is necessary for its effective operation. (b) A means of indicating when chemicals...

  18. 33 CFR 159.65 - Chemical level indicator.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 2 2012-07-01 2012-07-01 false Chemical level indicator. 159.65...) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.65 Chemical level indicator. The... any chemical that is necessary for its effective operation. (b) A means of indicating when chemicals...

  19. 33 CFR 159.65 - Chemical level indicator.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 2 2013-07-01 2013-07-01 false Chemical level indicator. 159.65...) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.65 Chemical level indicator. The... any chemical that is necessary for its effective operation. (b) A means of indicating when chemicals...

  20. 46 CFR 159.005-9 - Approval inspections and tests.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 6 2011-10-01 2011-10-01 false Approval inspections and tests. 159.005-9 Section 159.005-9 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) EQUIPMENT, CONSTRUCTION, AND MATERIALS: SPECIFICATIONS AND APPROVAL APPROVAL OF EQUIPMENT AND MATERIALS Approval Procedures § 159.005-9 Approval inspections and tests. (a) Each...

  1. 46 CFR 159.005-9 - Approval inspections and tests.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 6 2010-10-01 2010-10-01 false Approval inspections and tests. 159.005-9 Section 159.005-9 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) EQUIPMENT, CONSTRUCTION, AND MATERIALS: SPECIFICATIONS AND APPROVAL APPROVAL OF EQUIPMENT AND MATERIALS Approval Procedures § 159.005-9 Approval inspections and tests. (a) Each...

  2. Aminopyridinate-FI hybrids, their hafnium and titanium complexes, and their application in the living polymerization of 1-hexene.

    PubMed

    Haas, Isabelle; Dietel, Thomas; Press, Konstantin; Kol, Moshe; Kempe, Rhett

    2013-10-11

    Based on two well-established ligand systems, the aminopyridinato (Ap) and the phenoxyimine (FI) ligand systems, new Ap-FI hybrid ligands were developed. Four different Ap-FI hybrid ligands were synthesized through a simple condensation reaction and fully characterized. The reaction of hafnium tetrabenzyl with all four Ap-FI hybrid ligands exclusively led to mono(Ap-FI) complexes of the type [(Ap-FI)HfBn2 ]. The ligands acted as tetradentate dianionic chelates. Upon activation with tris(pentafluorophenyl)borane, the hafnium-dibenzyl complexes led to highly active catalysts for the polymerization of 1-hexene. Ultrahigh molecular weights and extremely narrow polydispersities support the living nature of this polymerization process. A possible deactivation product of the hafnium catalysts was characterized by single-crystal X-ray analysis and is discussed. The coordination modes of these new ligands were studied with the help of model titanium complexes. The reaction of titanium(IV) isopropoxide with ligand 1 led to a mono(Ap-FI) complex, which showed the desired fac-mer coordination mode. Titanium (IV) isopropoxide reacted with ligand 4 to give a complex of the type [(ApH-FI)2 Ti(OiPr)2 ], which featured the ligand in its monoanionic form. The two titanium complexes were characterized by X-ray crystal-structure analysis. Copyright © 2013 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim.

  3. 33 CFR 159.117 - Chemical resistance test.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Chemical resistance test. 159.117...) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.117 Chemical resistance test. (a... disinfectant that is required in the operation of the device. (3) Any chemical compound in solid, liquid or...

  4. 33 CFR 159.117 - Chemical resistance test.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Chemical resistance test. 159.117...) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.117 Chemical resistance test. (a... disinfectant that is required in the operation of the device. (3) Any chemical compound in solid, liquid or...

  5. 33 CFR 159.117 - Chemical resistance test.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 2 2014-07-01 2014-07-01 false Chemical resistance test. 159.117...) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.117 Chemical resistance test. (a... disinfectant that is required in the operation of the device. (3) Any chemical compound in solid, liquid or...

  6. 33 CFR 159.117 - Chemical resistance test.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 2 2012-07-01 2012-07-01 false Chemical resistance test. 159.117...) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.117 Chemical resistance test. (a... disinfectant that is required in the operation of the device. (3) Any chemical compound in solid, liquid or...

  7. 33 CFR 159.117 - Chemical resistance test.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 2 2013-07-01 2013-07-01 false Chemical resistance test. 159.117...) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.117 Chemical resistance test. (a... disinfectant that is required in the operation of the device. (3) Any chemical compound in solid, liquid or...

  8. 22 CFR 144.152-144.159 - [Reserved

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 22 Foreign Relations 1 2013-04-01 2013-04-01 false [Reserved] 144.152-144.159 Section 144.152-144.159 Foreign Relations DEPARTMENT OF STATE CIVIL RIGHTS ENFORCEMENT OF NONDISCRIMINATION ON THE BASIS OF HANDICAP IN PROGRAMS OR ACTIVITIES CONDUCTED BY THE UNITED STATES DEPARTMENT OF STATE §§ 144.152...

  9. 22 CFR 144.152-144.159 - [Reserved

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 22 Foreign Relations 1 2011-04-01 2011-04-01 false [Reserved] 144.152-144.159 Section 144.152-144.159 Foreign Relations DEPARTMENT OF STATE CIVIL RIGHTS ENFORCEMENT OF NONDISCRIMINATION ON THE BASIS OF HANDICAP IN PROGRAMS OR ACTIVITIES CONDUCTED BY THE UNITED STATES DEPARTMENT OF STATE §§ 144.152...

  10. 29 CFR 1910.159 - Automatic sprinkler systems.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... supply is out of service, except for systems of 20 or fewer sprinklers. (5) Hose connections for fire fighting use. The employer may attach hose connections for fire fighting use to wet pipe sprinkler systems... 29 Labor 5 2010-07-01 2010-07-01 false Automatic sprinkler systems. 1910.159 Section 1910.159...

  11. 29 CFR 1910.159 - Automatic sprinkler systems.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... supply is out of service, except for systems of 20 or fewer sprinklers. (5) Hose connections for fire fighting use. The employer may attach hose connections for fire fighting use to wet pipe sprinkler systems... 29 Labor 5 2013-07-01 2013-07-01 false Automatic sprinkler systems. 1910.159 Section 1910.159...

  12. 29 CFR 1910.159 - Automatic sprinkler systems.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... supply is out of service, except for systems of 20 or fewer sprinklers. (5) Hose connections for fire fighting use. The employer may attach hose connections for fire fighting use to wet pipe sprinkler systems... 29 Labor 5 2014-07-01 2014-07-01 false Automatic sprinkler systems. 1910.159 Section 1910.159...

  13. 29 CFR 1910.159 - Automatic sprinkler systems.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... supply is out of service, except for systems of 20 or fewer sprinklers. (5) Hose connections for fire fighting use. The employer may attach hose connections for fire fighting use to wet pipe sprinkler systems... 29 Labor 5 2012-07-01 2012-07-01 false Automatic sprinkler systems. 1910.159 Section 1910.159...

  14. 29 CFR 1910.159 - Automatic sprinkler systems.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... supply is out of service, except for systems of 20 or fewer sprinklers. (5) Hose connections for fire fighting use. The employer may attach hose connections for fire fighting use to wet pipe sprinkler systems... 29 Labor 5 2011-07-01 2011-07-01 false Automatic sprinkler systems. 1910.159 Section 1910.159...

  15. 33 CFR 159.317 - Sampling and reporting.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Sampling and reporting. 159.317... Operations § 159.317 Sampling and reporting. (a) The owner, operator, master or other person in charge of a.../Quality Control Plan (QA/QCP) accepted by the COTP for sampling and analysis of treated sewage and/or...

  16. 33 CFR 159.317 - Sampling and reporting.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Sampling and reporting. 159.317... Operations § 159.317 Sampling and reporting. (a) The owner, operator, master or other person in charge of a.../Quality Control Plan (QA/QCP) accepted by the COTP for sampling and analysis of treated sewage and/or...

  17. 12 CFR 410.152-410.159 - [Reserved

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 12 Banks and Banking 4 2010-01-01 2010-01-01 false [Reserved] 410.152-410.159 Section 410.152-410.159 Banks and Banking EXPORT-IMPORT BANK OF THE UNITED STATES ENFORCEMENT OF NONDISCRIMINATION ON THE BASIS OF HANDICAP IN PROGRAMS OR ACTIVITIES CONDUCTED BY EXPORT-IMPORT BANK OF THE UNITED STATES §§ 410...

  18. 33 CFR 159.115 - Temperature range test.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 2 2014-07-01 2014-07-01 false Temperature range test. 159.115...) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.115 Temperature range test. (a) The device must be held at a temperature of 60 °C or higher for a period of 16 hours. (b) The device...

  19. 33 CFR 159.115 - Temperature range test.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 33 Navigation and Navigable Waters 2 2013-07-01 2013-07-01 false Temperature range test. 159.115...) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.115 Temperature range test. (a) The device must be held at a temperature of 60 °C or higher for a period of 16 hours. (b) The device...

  20. 33 CFR 159.115 - Temperature range test.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 2 2012-07-01 2012-07-01 false Temperature range test. 159.115...) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.115 Temperature range test. (a) The device must be held at a temperature of 60 °C or higher for a period of 16 hours. (b) The device...

  1. 33 CFR 159.115 - Temperature range test.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Temperature range test. 159.115...) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.115 Temperature range test. (a) The device must be held at a temperature of 60 °C or higher for a period of 16 hours. (b) The device...

  2. 29 CFR 4.159 - General minimum wage.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 29 Labor 1 2010-07-01 2010-07-01 true General minimum wage. 4.159 Section 4.159 Labor Office of... General minimum wage. The Act, in section 2(b)(1), provides generally that no contractor or subcontractor... a contract less than the minimum wage specified under section 6(a)(1) of the Fair Labor Standards...

  3. Processing and characterization of boron carbide-hafnium diboride ceramics

    NASA Astrophysics Data System (ADS)

    Brown-Shaklee, Harlan James

    Hafnium diboride based ceramics are promising candidate materials for advanced aerospace and nuclear reactor components. The effectiveness of boron carbide and carbon as HfB2 sintering additives was systematically evaluated. In the first stage of the research, boron carbide and carbon additives were found to improve the densification behavior of milled HfB2 powder in part by removing oxides at the HfB2 surface during processing. Boron carbide additives reduced the hot pressing temperature of HfB2 by 150°C compared to carbon, which reduced the hot pressing temperature by ˜50°C. Reduction of oxide impurities alone could not explain the difference in sintering enhancement, however, and other mechanisms of enhancement were evaluated. Boron carbides throughout the homogeneity range were characterized to understand other mechanisms of sintering enhancement in HfB2. Heavily faulted carbon rich and boron rich boron carbides were synthesized for addition to HfB2. The greatest enhancement to densification was observed in samples containing boron- and carbon-rich compositions whereas B6.5 C provided the least enhancement to densification. It is proposed that carbon rich and boron rich boron carbides create boron and hafnium point defects in HfB2, respectively, which facilitate densification. Evaluation of the thermal conductivity (kth) between room temperature and 2000°C suggested that the stoichiometry of the boron carbide additives did not significantly affect kth of HfB2-BxC composites. The improved sinterability and the high kth (˜110 W/m-K at 300K and ˜90 W/m-K at 1000°C ) of HfB2-BxC ceramics make them excellent candidates for isotopically enriched reactor control materials.

  4. Metal–Organic Nanosheets Formed via Defect-Mediated Transformation of a Hafnium Metal–Organic Framework

    PubMed Central

    2017-01-01

    We report a hafnium-containing MOF, hcp UiO-67(Hf), which is a ligand-deficient layered analogue of the face-centered cubic fcu UiO-67(Hf). hcp UiO-67 accommodates its lower ligand:metal ratio compared to fcu UiO-67 through a new structural mechanism: the formation of a condensed “double cluster” (Hf12O8(OH)14), analogous to the condensation of coordination polyhedra in oxide frameworks. In oxide frameworks, variable stoichiometry can lead to more complex defect structures, e.g., crystallographic shear planes or modules with differing compositions, which can be the source of further chemical reactivity; likewise, the layered hcp UiO-67 can react further to reversibly form a two-dimensional metal–organic framework, hxl UiO-67. Both three-dimensional hcp UiO-67 and two-dimensional hxl UiO-67 can be delaminated to form metal–organic nanosheets. Delamination of hcp UiO-67 occurs through the cleavage of strong hafnium-carboxylate bonds and is effected under mild conditions, suggesting that defect-ordered MOFs could be a productive route to porous two-dimensional materials. PMID:28343394

  5. Metal-Organic Nanosheets Formed via Defect-Mediated Transformation of a Hafnium Metal-Organic Framework.

    PubMed

    Cliffe, Matthew J; Castillo-Martínez, Elizabeth; Wu, Yue; Lee, Jeongjae; Forse, Alexander C; Firth, Francesca C N; Moghadam, Peyman Z; Fairen-Jimenez, David; Gaultois, Michael W; Hill, Joshua A; Magdysyuk, Oxana V; Slater, Ben; Goodwin, Andrew L; Grey, Clare P

    2017-04-19

    We report a hafnium-containing MOF, hcp UiO-67(Hf), which is a ligand-deficient layered analogue of the face-centered cubic fcu UiO-67(Hf). hcp UiO-67 accommodates its lower ligand:metal ratio compared to fcu UiO-67 through a new structural mechanism: the formation of a condensed "double cluster" (Hf 12 O 8 (OH) 14 ), analogous to the condensation of coordination polyhedra in oxide frameworks. In oxide frameworks, variable stoichiometry can lead to more complex defect structures, e.g., crystallographic shear planes or modules with differing compositions, which can be the source of further chemical reactivity; likewise, the layered hcp UiO-67 can react further to reversibly form a two-dimensional metal-organic framework, hxl UiO-67. Both three-dimensional hcp UiO-67 and two-dimensional hxl UiO-67 can be delaminated to form metal-organic nanosheets. Delamination of hcp UiO-67 occurs through the cleavage of strong hafnium-carboxylate bonds and is effected under mild conditions, suggesting that defect-ordered MOFs could be a productive route to porous two-dimensional materials.

  6. 33 CFR 159.125 - Visible floating solids: Type I devices.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Visible floating solids: Type I devices. 159.125 Section 159.125 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.125...

  7. 33 CFR 159.12 - Regulations for certification of existing devices.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Regulations for certification of existing devices. 159.12 Section 159.12 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Certification Procedures § 159.12 Regulations for...

  8. 46 CFR 159.001-5 - Correspondence and applications.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 6 2011-10-01 2011-10-01 false Correspondence and applications. 159.001-5 Section 159.001-5 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) EQUIPMENT, CONSTRUCTION, AND... Correspondence and applications. Unless otherwise specified, all correspondence and applications in connection...

  9. 46 CFR 159.001-5 - Correspondence and applications.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 6 2010-10-01 2010-10-01 false Correspondence and applications. 159.001-5 Section 159.001-5 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) EQUIPMENT, CONSTRUCTION, AND... Correspondence and applications. Unless otherwise specified, all correspondence and applications in connection...

  10. 42 CFR 423.159 - Electronic prescription drug program.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 42 Public Health 3 2012-10-01 2012-10-01 false Electronic prescription drug program. 423.159... SERVICES (CONTINUED) MEDICARE PROGRAM (CONTINUED) VOLUNTARY MEDICARE PRESCRIPTION DRUG BENEFIT Cost Control and Quality Improvement Requirements § 423.159 Electronic prescription drug program. (a) Definitions...

  11. 42 CFR 423.159 - Electronic prescription drug program.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 42 Public Health 3 2014-10-01 2014-10-01 false Electronic prescription drug program. 423.159... SERVICES (CONTINUED) MEDICARE PROGRAM (CONTINUED) VOLUNTARY MEDICARE PRESCRIPTION DRUG BENEFIT Cost Control and Quality Improvement Requirements § 423.159 Electronic prescription drug program. (a) Definitions...

  12. 42 CFR 423.159 - Electronic prescription drug program.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 42 Public Health 3 2013-10-01 2013-10-01 false Electronic prescription drug program. 423.159... SERVICES (CONTINUED) MEDICARE PROGRAM (CONTINUED) VOLUNTARY MEDICARE PRESCRIPTION DRUG BENEFIT Cost Control and Quality Improvement Requirements § 423.159 Electronic prescription drug program. (a) Definitions...

  13. 33 CFR 159.315 - Sewage and graywater discharge record book.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... record book. 159.315 Section 159.315 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND... by Cruise Vessel Operations § 159.315 Sewage and graywater discharge record book. (a) While operating... and Graywater Discharge Record Book with the vessel's name and official number listed on the front...

  14. 33 CFR 159.315 - Sewage and graywater discharge record book.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... record book. 159.315 Section 159.315 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND... by Cruise Vessel Operations § 159.315 Sewage and graywater discharge record book. (a) While operating... and Graywater Discharge Record Book with the vessel's name and official number listed on the front...

  15. 33 CFR 159.315 - Sewage and graywater discharge record book.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... record book. 159.315 Section 159.315 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND... by Cruise Vessel Operations § 159.315 Sewage and graywater discharge record book. (a) While operating... and Graywater Discharge Record Book with the vessel's name and official number listed on the front...

  16. 33 CFR 159.315 - Sewage and graywater discharge record book.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... record book. 159.315 Section 159.315 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND... by Cruise Vessel Operations § 159.315 Sewage and graywater discharge record book. (a) While operating... and Graywater Discharge Record Book with the vessel's name and official number listed on the front...

  17. 33 CFR 159.315 - Sewage and graywater discharge record book.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... record book. 159.315 Section 159.315 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND... by Cruise Vessel Operations § 159.315 Sewage and graywater discharge record book. (a) While operating... and Graywater Discharge Record Book with the vessel's name and official number listed on the front...

  18. 33 CFR 159.71 - Electrical controls and conductors.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... conductors. 159.71 Section 159.71 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND... Electrical controls and conductors. Electrical controls and conductors must be installed in accordance with good marine practice. Wire must be copper and must be stranded. Electrical controls and conductors must...

  19. 33 CFR 159.71 - Electrical controls and conductors.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... conductors. 159.71 Section 159.71 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND... Electrical controls and conductors. Electrical controls and conductors must be installed in accordance with good marine practice. Wire must be copper and must be stranded. Electrical controls and conductors must...

  20. 42 CFR 423.159 - Electronic prescription drug program.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 42 Public Health 3 2010-10-01 2010-10-01 false Electronic prescription drug program. 423.159 Section 423.159 Public Health CENTERS FOR MEDICARE & MEDICAID SERVICES, DEPARTMENT OF HEALTH AND HUMAN SERVICES (CONTINUED) MEDICARE PROGRAM VOLUNTARY MEDICARE PRESCRIPTION DRUG BENEFIT Cost Control and Quality...

  1. 42 CFR 423.159 - Electronic prescription drug program.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 42 Public Health 3 2011-10-01 2011-10-01 false Electronic prescription drug program. 423.159... SERVICES (CONTINUED) MEDICARE PROGRAM VOLUNTARY MEDICARE PRESCRIPTION DRUG BENEFIT Cost Control and Quality Improvement Requirements § 423.159 Electronic prescription drug program. (a) Definitions. For purposes of this...

  2. 14 CFR 121.159 - Single-engine airplanes prohibited.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 3 2010-01-01 2010-01-01 false Single-engine airplanes prohibited. 121.159 Section 121.159 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION... airplanes prohibited. No certificate holder may operate a single-engine airplane under this part. [Doc. No...

  3. 14 CFR 121.159 - Single-engine airplanes prohibited.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 14 Aeronautics and Space 3 2011-01-01 2011-01-01 false Single-engine airplanes prohibited. 121.159 Section 121.159 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION... airplanes prohibited. No certificate holder may operate a single-engine airplane under this part. [Doc. No...

  4. 14 CFR 121.159 - Single-engine airplanes prohibited.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 14 Aeronautics and Space 3 2014-01-01 2014-01-01 false Single-engine airplanes prohibited. 121.159 Section 121.159 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION... airplanes prohibited. No certificate holder may operate a single-engine airplane under this part. [Doc. No...

  5. 14 CFR 121.159 - Single-engine airplanes prohibited.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 14 Aeronautics and Space 3 2012-01-01 2012-01-01 false Single-engine airplanes prohibited. 121.159 Section 121.159 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION... airplanes prohibited. No certificate holder may operate a single-engine airplane under this part. [Doc. No...

  6. 14 CFR 121.159 - Single-engine airplanes prohibited.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 14 Aeronautics and Space 3 2013-01-01 2013-01-01 false Single-engine airplanes prohibited. 121.159 Section 121.159 Aeronautics and Space FEDERAL AVIATION ADMINISTRATION, DEPARTMENT OF TRANSPORTATION... airplanes prohibited. No certificate holder may operate a single-engine airplane under this part. [Doc. No...

  7. 33 CFR 159.55 - Identification.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.55 Identification. (a) Each... without loss of legibility the combined effects of normal wear and tear and exposure to water, salt spray...

  8. 33 CFR 159.319 - Fecal coliform and total suspended solids standards.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... suspended solids standards. 159.319 Section 159.319 Navigation and Navigable Waters COAST GUARD, DEPARTMENT... Certain Alaskan Waters by Cruise Vessel Operations § 159.319 Fecal coliform and total suspended solids... solids greater than 150 mg/l. (b) Graywater effluent discharges. [Reserved] ...

  9. 33 CFR 159.319 - Fecal coliform and total suspended solids standards.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... suspended solids standards. 159.319 Section 159.319 Navigation and Navigable Waters COAST GUARD, DEPARTMENT... Certain Alaskan Waters by Cruise Vessel Operations § 159.319 Fecal coliform and total suspended solids... solids greater than 150 mg/l. (b) Graywater effluent discharges. [Reserved] ...

  10. 40 CFR 159.155 - When information must be submitted.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... information concerning detections of pesticides in water described in § 159.178(b), adverse effects incidents... reported according to the time frames set forth in § 159.184(d). (c) EPA may, in its discretion, notify a...

  11. 38 CFR 17.159 - Obtaining vehicles for special driver training courses.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 38 Pensions, Bonuses, and Veterans' Relief 1 2012-07-01 2012-07-01 false Obtaining vehicles for special driver training courses. 17.159 Section 17.159 Pensions, Bonuses, and Veterans' Relief DEPARTMENT OF VETERANS AFFAIRS MEDICAL Automotive Equipment and Driver Training § 17.159 Obtaining vehicles for...

  12. 38 CFR 17.159 - Obtaining vehicles for special driver training courses.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 38 Pensions, Bonuses, and Veterans' Relief 1 2010-07-01 2010-07-01 false Obtaining vehicles for special driver training courses. 17.159 Section 17.159 Pensions, Bonuses, and Veterans' Relief DEPARTMENT OF VETERANS AFFAIRS MEDICAL Automotive Equipment and Driver Training § 17.159 Obtaining vehicles for...

  13. 38 CFR 17.159 - Obtaining vehicles for special driver training courses.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 38 Pensions, Bonuses, and Veterans' Relief 1 2011-07-01 2011-07-01 false Obtaining vehicles for special driver training courses. 17.159 Section 17.159 Pensions, Bonuses, and Veterans' Relief DEPARTMENT OF VETERANS AFFAIRS MEDICAL Automotive Equipment and Driver Training § 17.159 Obtaining vehicles for...

  14. 38 CFR 17.159 - Obtaining vehicles for special driver training courses.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 38 Pensions, Bonuses, and Veterans' Relief 1 2013-07-01 2013-07-01 false Obtaining vehicles for special driver training courses. 17.159 Section 17.159 Pensions, Bonuses, and Veterans' Relief DEPARTMENT OF VETERANS AFFAIRS MEDICAL Automotive Equipment and Driver Training § 17.159 Obtaining vehicles for...

  15. 38 CFR 17.159 - Obtaining vehicles for special driver training courses.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 38 Pensions, Bonuses, and Veterans' Relief 1 2014-07-01 2014-07-01 false Obtaining vehicles for special driver training courses. 17.159 Section 17.159 Pensions, Bonuses, and Veterans' Relief DEPARTMENT OF VETERANS AFFAIRS MEDICAL Automotive Equipment and Driver Training § 17.159 Obtaining vehicles for...

  16. 10 CFR 52.159 - Standards for review of application.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 10 Energy 2 2010-01-01 2010-01-01 false Standards for review of application. 52.159 Section 52.159 Energy NUCLEAR REGULATORY COMMISSION (CONTINUED) LICENSES, CERTIFICATIONS, AND APPROVALS FOR NUCLEAR... and its appendices, 51, 73, and 100 and its appendices. ...

  17. 10 CFR 52.159 - Standards for review of application.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 10 Energy 2 2011-01-01 2011-01-01 false Standards for review of application. 52.159 Section 52.159 Energy NUCLEAR REGULATORY COMMISSION (CONTINUED) LICENSES, CERTIFICATIONS, AND APPROVALS FOR NUCLEAR... and its appendices, 51, 73, and 100 and its appendices. ...

  18. 33 CFR 159.126a - Suspended solids test: Type II devices.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Suspended solids test: Type II devices. 159.126a Section 159.126a Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.126a...

  19. 33 CFR 159.89 - Power interruption: Type I and II devices.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Power interruption: Type I and II devices. 159.89 Section 159.89 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.89 Power...

  20. 33 CFR 159.12a - Certification of certain Type III devices.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Certification of certain Type III devices. 159.12a Section 159.12a Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) POLLUTION MARINE SANITATION DEVICES Certification Procedures § 159.12a Certification...

  1. 12 CFR 159.10 - How must separate corporate identities be maintained?

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 12 Banks and Banking 1 2014-01-01 2014-01-01 false How must separate corporate identities be maintained? 159.10 Section 159.10 Banks and Banking COMPTROLLER OF THE CURRENCY, DEPARTMENT OF THE TREASURY SUBORDINATE ORGANIZATIONS § 159.10 How must separate corporate identities be maintained? (a) Each Federal...

  2. 12 CFR 159.10 - How must separate corporate identities be maintained?

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 12 Banks and Banking 1 2013-01-01 2013-01-01 false How must separate corporate identities be maintained? 159.10 Section 159.10 Banks and Banking COMPTROLLER OF THE CURRENCY, DEPARTMENT OF THE TREASURY SUBORDINATE ORGANIZATIONS § 159.10 How must separate corporate identities be maintained? (a) Each Federal...

  3. 12 CFR 159.10 - How must separate corporate identities be maintained?

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 12 Banks and Banking 1 2012-01-01 2012-01-01 false How must separate corporate identities be maintained? 159.10 Section 159.10 Banks and Banking COMPTROLLER OF THE CURRENCY, DEPARTMENT OF THE TREASURY SUBORDINATE ORGANIZATIONS § 159.10 How must separate corporate identities be maintained? (a) Each Federal...

  4. 33 CFR 159.57 - Installation, operation, and maintenance instructions.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... capable of navigation by interstate vessel traffic subject to this regulation, marine sanitation devices... 33 Navigation and Navigable Waters 2 2011-07-01 2011-07-01 false Installation, operation, and maintenance instructions. 159.57 Section 159.57 Navigation and Navigable Waters COAST GUARD, DEPARTMENT OF...

  5. 46 CFR 159.005-11 - Approval inspection or test report: Contents.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 6 2010-10-01 2010-10-01 false Approval inspection or test report: Contents. 159.005-11 Section 159.005-11 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) EQUIPMENT, CONSTRUCTION, AND MATERIALS: SPECIFICATIONS AND APPROVAL APPROVAL OF EQUIPMENT AND MATERIALS Approval Procedures § 159.005-11 Approval inspection or tes...

  6. 46 CFR 159.005-11 - Approval inspection or test report: Contents.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 6 2011-10-01 2011-10-01 false Approval inspection or test report: Contents. 159.005-11 Section 159.005-11 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) EQUIPMENT, CONSTRUCTION, AND MATERIALS: SPECIFICATIONS AND APPROVAL APPROVAL OF EQUIPMENT AND MATERIALS Approval Procedures § 159.005-11 Approval inspection or tes...

  7. 19 CFR 159.55 - Possible prohibited food, drugs, or other articles.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 19 Customs Duties 2 2010-04-01 2010-04-01 false Possible prohibited food, drugs, or other articles. 159.55 Section 159.55 Customs Duties U.S. CUSTOMS AND BORDER PROTECTION, DEPARTMENT OF HOMELAND SECURITY; DEPARTMENT OF THE TREASURY (CONTINUED) LIQUIDATION OF DUTIES Suspension of Liquidation § 159.55 Possible prohibited food, drugs, or other...

  8. 19 CFR 159.37 - Suspension of certification of rates.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 19 Customs Duties 2 2010-04-01 2010-04-01 false Suspension of certification of rates. 159.37...; DEPARTMENT OF THE TREASURY (CONTINUED) LIQUIDATION OF DUTIES Conversion of Foreign Currency § 159.37 Suspension of certification of rates. Whenever the Federal Reserve Bank of New York advises that its...

  9. 29 CFR 1915.159 - Personal fall arrest systems (PFAS).

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ..., DEPARTMENT OF LABOR (CONTINUED) OCCUPATIONAL SAFETY AND HEALTH STANDARDS FOR SHIPYARD EMPLOYMENT Personal Protective Equipment (PPE) § 1915.159 Personal fall arrest systems (PFAS). The criteria of this section apply... 29 Labor 7 2011-07-01 2011-07-01 false Personal fall arrest systems (PFAS). 1915.159 Section 1915...

  10. 46 CFR 159.007-9 - Production inspections and tests.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 6 2010-10-01 2010-10-01 false Production inspections and tests. 159.007-9 Section 159.007-9 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) EQUIPMENT, CONSTRUCTION, AND MATERIALS: SPECIFICATIONS AND APPROVAL APPROVAL OF EQUIPMENT AND MATERIALS Production Inspection and Tests of Approved Equipment and Materials §...

  11. 46 CFR 159.007-9 - Production inspections and tests.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 6 2011-10-01 2011-10-01 false Production inspections and tests. 159.007-9 Section 159.007-9 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) EQUIPMENT, CONSTRUCTION, AND MATERIALS: SPECIFICATIONS AND APPROVAL APPROVAL OF EQUIPMENT AND MATERIALS Production Inspection and Tests of Approved Equipment and Materials §...

  12. 33 CFR 159.101 - Testing: general.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ...) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.101 Testing: general. Unless... vessel in accordance with the manufacturer's instructions with respect to mounting, water supply, and...

  13. 29 CFR 1915.159 - Personal fall arrest systems (PFAS).

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 29 Labor 7 2012-07-01 2012-07-01 false Personal fall arrest systems (PFAS). 1915.159 Section 1915... Protective Equipment (PPE) § 1915.159 Personal fall arrest systems (PFAS). The criteria of this section apply to PFAS and their use. Effective January 1, 1998, body belts and non-locking snaphooks are not...

  14. 29 CFR 1915.159 - Personal fall arrest systems (PFAS).

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 29 Labor 7 2014-07-01 2014-07-01 false Personal fall arrest systems (PFAS). 1915.159 Section 1915... Protective Equipment (PPE) § 1915.159 Personal fall arrest systems (PFAS). The criteria of this section apply to PFAS and their use. Effective January 1, 1998, body belts and non-locking snaphooks are not...

  15. 29 CFR 1915.159 - Personal fall arrest systems (PFAS).

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 29 Labor 7 2013-07-01 2013-07-01 false Personal fall arrest systems (PFAS). 1915.159 Section 1915... Protective Equipment (PPE) § 1915.159 Personal fall arrest systems (PFAS). The criteria of this section apply to PFAS and their use. Effective January 1, 1998, body belts and non-locking snaphooks are not...

  16. 29 CFR 1915.159 - Personal fall arrest systems (PFAS).

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 29 Labor 7 2010-07-01 2010-07-01 false Personal fall arrest systems (PFAS). 1915.159 Section 1915... Protective Equipment (PPE) § 1915.159 Personal fall arrest systems (PFAS). The criteria of this section apply to PFAS and their use. Effective January 1, 1998, body belts and non-locking snaphooks are not...

  17. 40 CFR 49.159 - Final permit issuance and administrative and judicial review.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 1 2014-07-01 2014-07-01 false Final permit issuance and administrative and judicial review. 49.159 Section 49.159 Protection of Environment ENVIRONMENTAL PROTECTION... Federal Implementation Plan Provisions Federal Minor New Source Review Program in Indian Country § 49.159...

  18. 40 CFR 49.159 - Final permit issuance and administrative and judicial review.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 1 2012-07-01 2012-07-01 false Final permit issuance and administrative and judicial review. 49.159 Section 49.159 Protection of Environment ENVIRONMENTAL PROTECTION... Federal Implementation Plan Provisions Federal Minor New Source Review Program in Indian Country § 49.159...

  19. 40 CFR 49.159 - Final permit issuance and administrative and judicial review.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 1 2013-07-01 2013-07-01 false Final permit issuance and administrative and judicial review. 49.159 Section 49.159 Protection of Environment ENVIRONMENTAL PROTECTION... Federal Implementation Plan Provisions Federal Minor New Source Review Program in Indian Country § 49.159...

  20. 40 CFR 49.159 - Final permit issuance and administrative and judicial review.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 1 2011-07-01 2011-07-01 false Final permit issuance and administrative and judicial review. 49.159 Section 49.159 Protection of Environment ENVIRONMENTAL PROTECTION... Federal Implementation Plan Provisions Federal Minor New Source Review Program in Indian Country § 49.159...

  1. As-Received, Ozone Cleaned and Ar+ Sputtered Surfaces of Hafnium Oxide Grown by Atomic Layer Deposition and Studied by XPS

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Engelhard, Mark H.; Herman, Jacob A.; Wallace, Robert

    2012-06-27

    In this study, X-ray photoelectron spectroscopy (XPS) characterization was performed on 47 nm thick hafnium oxide (HfO{sub 2}) films grown by atomic layer deposition using TEMA-Hf/H{sub 2}O at 250 C substrate temperature. HfO{sub 2} is currently being studied as a possible replacement for Silicon Oxide (SiO{sub 2}) as a gate dielectric in electronics transistors. XPS spectra were collected on a Physical Electronics Quantum 2000 Scanning ESCA Microprobe using a monochromatic Al K{sub a} X-ray (1486.7 eV) excitation source. The sample was analyzed under the following conditions: as received, after UV irradiation for five minutes, and after sputter cleaning with 2more » kV Ar{sup +} ions for 180 seconds. Survey scans showed carbon, oxygen, and hafnium as the major species in the film, while the only minor species of argon and carbide was detected after sputtering. Adventitious carbon initially composed approximately 18.6 AT% of the surface, but after UV cleaning it was reduced to 2.4 AT%. This demonstrated that that the majority of carbon was due to adventitious carbon. However, after 2 kV Ar{sup +} sputtering there was still only trace amounts of carbon at {approx}1 AT%, Some of this trace carbon is now in the form of a carbide due to the interaction with Ar{sup +} used for sputter cleaning. Furthermore, the stoiciometric ratio of oxygen and hafnium is consistent with a high quality HfO{sub 2} film.« less

  2. Hafnium, Tungsten, and the Differentiation of the Moon and Mars

    NASA Astrophysics Data System (ADS)

    Taylor, G. J.

    2003-11-01

    Measurements of the isotopic composition of tungsten (W) show that lunar samples and Martian meteorites have an excess of W-182. This was produced by the decay of hafnium-182 (Hf-182), an isotope with a half-life of only 9 million years. Because tungsten dissolves enthusiastically in metallic iron and hafnium does not, it is possible to use the abundance of W-182 in rocks formed by melting of the silicate mantle as an indicator of the timing of core formation. However, the concentrations of Hf and W in rocky material can be affected by melting and crystallization, so we also need to know how each element concentrates in common minerals in the mantles of the Moon and Mars. The behavior of Hf has been studied experimentally, but this is not true of W. Kevin Righter (Johnson Space Center) and Charles (Chip) Shearer (University of New Mexico) have filled this knowledge void by determining how W partitions between olivine, high- and low-calcium pyroxene, plagioclase feldspar, and garnet. The new data allowed Righter and Shearer to reexamine available measurements of the isotopic composition of W in lunar samples and Martian meteorites. Their analysis suggests that the lunar magma ocean, a huge magma system that surrounded the Moon when it formed, solidified in less than 30 million years. This is shorter than many theoretical calculations suggest. Pathfinder data and chemical data from Martian meteorites suggest that the core of Mars makes up about 20% of the planet. Core formation and subsequent melting of a region of the mantle containing garnet and high-calcium pyroxene took place less than 20-30 million years after the formation of the first solids in the solar system. This type of research shows the importance of measurements of isotopic compositions of radioactive elements or their decay products and laboratory experiments on the geochemical behavior of those elements.

  3. In Vitro and In Vivo Antibacterial Activities of DC-159a, a New Fluoroquinolone▿

    PubMed Central

    Hoshino, Kazuki; Inoue, Kazue; Murakami, Yoichi; Kurosaka, Yuichi; Namba, Kenji; Kashimoto, Yoshinori; Uoyama, Saori; Okumura, Ryo; Higuchi, Saito; Otani, Tsuyoshi

    2008-01-01

    DC-159a is a new 8-methoxy fluoroquinolone that possesses a broad spectrum of antibacterial activity, with extended activity against gram-positive pathogens, especially streptococci and staphylococci from patients with community-acquired infections. DC-159a showed activity against Streptococcus spp. (MIC90, 0.12 μg/ml) and inhibited the growth of 90% of levofloxacin-intermediate and -resistant strains at 1 μg/ml. The MIC90s of DC-159a against Staphylococcus spp. were 0.5 μg/ml or less. Against quinolone- and methicillin-resistant Staphylococcus aureus strains, however, the MIC90 of DC-159a was 8 μg/ml. DC-159a was the most active against Enterococcus spp. (MIC90, 4 to 8 μg/ml) and was more active than the marketed fluoroquinolones, such as levofloxacin, ciprofloxacin, and moxifloxacin. The MIC90s of DC-159a against Haemophilus influenzae, Moraxella catarrhalis, and Klebsiella pneumoniae were 0.015, 0.06, and 0.25 μg/ml, respectively. The activity of DC-159a against Mycoplasma pneumoniae was eightfold more potent than that of levofloxacin. The MICs of DC-159a against Chlamydophila pneumoniae were comparable to those of moxifloxacin, and DC-159a was more potent than levofloxacin. The MIC90s of DC-159a against Peptostreptococcus spp., Clostridium difficile, and Bacteroides fragilis were 0.5, 4, and 2 μg/ml, respectively; and among the quinolones tested it showed the highest level of activity against anaerobic organisms. DC-159a demonstrated rapid bactericidal activity against quinolone-resistant Streptococcus pneumoniae strains both in vitro and in vivo. In vitro, DC-159a showed faster killing than moxifloxacin and garenoxacin. The bactericidal activity of DC-159a in a murine muscle infection model was revealed to be superior to that of moxifloxacin. These activities carried over to the in vivo efficacy in the murine pneumonia model, in which treatment with DC-159a led to bactericidal activity superior to those of the other agents tested. PMID:17938194

  4. Study of bulk Hafnium oxide (HfO2) under compression

    NASA Astrophysics Data System (ADS)

    Pathak, Santanu; Mandal, Guruprasad; Das, Parnika

    2018-04-01

    Hafnium oxide (HfO2) is a technologically important material. This material has K-value of 25 and band gap 5.8 eV. A k value of 25-30 is preferred for a gate dielectric [1]. As it shows good insulating and capacitive properties, HfO2 is being considered as a replacement to SiO2 in microelectronic devices as gate dielectrics. On the other hand because of toughening mechanism due to phase transformation induced by stress field observed in these oxides, HFO2 has been a material of investigations in various configurations for a very long time. However the controversies about phase transition of HfO2 under pressure still exists. High quality synchrotron radiation has been used to study the structural phase transition of HfO2 under pressure.

  5. 46 CFR 159.010-5 - Independent laboratory: Application for acceptance.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 6 2010-10-01 2010-10-01 false Independent laboratory: Application for acceptance. 159... Laboratory: Acceptance, Recognition, and Termination § 159.010-5 Independent laboratory: Application for acceptance. (a) Each application for acceptance of an organization as an independent laboratory must contain...

  6. 19 CFR 159.33 - Proclaimed rate.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... currency involved, such proclaimed rate shall be used unless it varies by 5 percent or more from the... (CONTINUED) LIQUIDATION OF DUTIES Conversion of Foreign Currency § 159.33 Proclaimed rate. If a rate of...

  7. 33 CFR 159.105 - Shock test.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... MARINE SANITATION DEVICES Design, Construction, and Testing § 159.105 Shock test. The device, with liquid retention components, if any, filled with water to half of their volume, must be subjected to 1,000 vertical...

  8. Functional Specialization amongst the Arabidopsis Toc159 Family of Chloroplast Protein Import ReceptorsW⃞

    PubMed Central

    Kubis, Sybille; Patel, Ramesh; Combe, Jonathan; Bédard, Jocelyn; Kovacheva, Sabina; Lilley, Kathryn; Biehl, Alexander; Leister, Dario; Ríos, Gabino; Koncz, Csaba; Jarvis, Paul

    2004-01-01

    The initial stages of preprotein import into chloroplasts are mediated by the receptor GTPase Toc159. In Arabidopsis thaliana, Toc159 is encoded by a small gene family: atTOC159, atTOC132, atTOC120, and atTOC90. Phylogenetic analysis suggested that at least two distinct Toc159 subtypes, characterized by atToc159 and atToc132/atToc120, exist in plants. atTOC159 was strongly expressed in young, photosynthetic tissues, whereas atTOC132 and atTOC120 were expressed at a uniformly low level and so were relatively prominent in nonphotosynthetic tissues. Based on the albino phenotype of its knockout mutant, atToc159 was previously proposed to be a receptor with specificity for photosynthetic preproteins. To elucidate the roles of the other isoforms, we characterized Arabidopsis knockout mutants for each one. None of the single mutants had strong visible phenotypes, but toc132 toc120 double homozygotes appeared similar to toc159, indicating redundancy between atToc132 and atToc120. Transgenic complementation studies confirmed this redundancy but revealed little functional overlap between atToc132/atToc120 and atToc159 or atToc90. Unlike toc159, toc132 toc120 caused structural abnormalities in root plastids. Furthermore, when proteomics and transcriptomics were used to compare toc132 with ppi1 (a receptor mutant that is specifically defective in the expression, import, and accumulation of photosynthetic proteins), major differences were observed, suggesting that atToc132 (and atToc120) has specificity for nonphotosynthetic proteins. When both atToc159 and the major isoform of the other subtype, atToc132, were absent, an embryo-lethal phenotype resulted, demonstrating the essential role of Toc159 in the import mechanism. PMID:15273297

  9. 14 CFR 382.159 - How are complaints filed with DOT?

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 4 2010-01-01 2010-01-01 false How are complaints filed with DOT? 382.159 Section 382.159 Aeronautics and Space OFFICE OF THE SECRETARY, DEPARTMENT OF TRANSPORTATION (AVIATION PROCEEDINGS) SPECIAL REGULATIONS NONDISCRIMINATION ON THE BASIS OF DISABILITY IN AIR TRAVEL Complaints and...

  10. 14 CFR 382.159 - How are complaints filed with DOT?

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 14 Aeronautics and Space 4 2011-01-01 2011-01-01 false How are complaints filed with DOT? 382.159 Section 382.159 Aeronautics and Space OFFICE OF THE SECRETARY, DEPARTMENT OF TRANSPORTATION (AVIATION PROCEEDINGS) SPECIAL REGULATIONS NONDISCRIMINATION ON THE BASIS OF DISABILITY IN AIR TRAVEL Complaints and...

  11. 14 CFR 382.159 - How are complaints filed with DOT?

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 14 Aeronautics and Space 4 2013-01-01 2013-01-01 false How are complaints filed with DOT? 382.159 Section 382.159 Aeronautics and Space OFFICE OF THE SECRETARY, DEPARTMENT OF TRANSPORTATION (AVIATION PROCEEDINGS) SPECIAL REGULATIONS NONDISCRIMINATION ON THE BASIS OF DISABILITY IN AIR TRAVEL Complaints and...

  12. 14 CFR 382.159 - How are complaints filed with DOT?

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 14 Aeronautics and Space 4 2014-01-01 2014-01-01 false How are complaints filed with DOT? 382.159 Section 382.159 Aeronautics and Space OFFICE OF THE SECRETARY, DEPARTMENT OF TRANSPORTATION (AVIATION PROCEEDINGS) SPECIAL REGULATIONS NONDISCRIMINATION ON THE BASIS OF DISABILITY IN AIR TRAVEL Complaints and...

  13. 14 CFR 382.159 - How are complaints filed with DOT?

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 14 Aeronautics and Space 4 2012-01-01 2012-01-01 false How are complaints filed with DOT? 382.159 Section 382.159 Aeronautics and Space OFFICE OF THE SECRETARY, DEPARTMENT OF TRANSPORTATION (AVIATION PROCEEDINGS) SPECIAL REGULATIONS NONDISCRIMINATION ON THE BASIS OF DISABILITY IN AIR TRAVEL Complaints and...

  14. Multimode resistive switching in nanoscale hafnium oxide stack as studied by atomic force microscopy

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Hou, Y., E-mail: houyi@pku.edu.cn, E-mail: lfliu@pku.edu.cn; IMEC, Kapeldreef 75, B-3001 Heverlee; Department of Physics and Astronomy, KU Leuven, Celestijnenlaan 200D, B-3001 Heverlee

    2016-07-11

    The nanoscale resistive switching in hafnium oxide stack is investigated by the conductive atomic force microscopy (C-AFM). The initial oxide stack is insulating and electrical stress from the C-AFM tip induces nanometric conductive filaments. Multimode resistive switching can be observed in consecutive operation cycles at one spot. The different modes are interpreted in the framework of a low defect quantum point contact theory. The model implies that the optimization of the conductive filament active region is crucial for the future application of nanoscale resistive switching devices.

  15. 49 CFR 15.9 - Restrictions on the disclosure of SSI.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... information under section 214 of the Homeland Security Act, any covered person who is a Federal employee in... Section 15.9 Transportation Office of the Secretary of Transportation PROTECTION OF SENSITIVE SECURITY INFORMATION § 15.9 Restrictions on the disclosure of SSI. (a) Duty to protect information. A covered person...

  16. 49 CFR 15.9 - Restrictions on the disclosure of SSI.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... information under section 214 of the Homeland Security Act, any covered person who is a Federal employee in... Section 15.9 Transportation Office of the Secretary of Transportation PROTECTION OF SENSITIVE SECURITY INFORMATION § 15.9 Restrictions on the disclosure of SSI. (a) Duty to protect information. A covered person...

  17. 46 CFR 159.007-13 - Production inspections and tests: Records.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 6 2011-10-01 2011-10-01 false Production inspections and tests: Records. 159.007-13 Section 159.007-13 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) EQUIPMENT, CONSTRUCTION, AND MATERIALS: SPECIFICATIONS AND APPROVAL APPROVAL OF EQUIPMENT AND MATERIALS Production Inspection and Tests of Approved Equipment and...

  18. 46 CFR 159.007-13 - Production inspections and tests: Records.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 6 2010-10-01 2010-10-01 false Production inspections and tests: Records. 159.007-13 Section 159.007-13 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) EQUIPMENT, CONSTRUCTION, AND MATERIALS: SPECIFICATIONS AND APPROVAL APPROVAL OF EQUIPMENT AND MATERIALS Production Inspection and Tests of Approved Equipment and...

  19. 49 CFR 173.159a - Exceptions for non-spillable batteries.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 49 Transportation 2 2010-10-01 2010-10-01 false Exceptions for non-spillable batteries. 173.159a... Class 1 and Class 7 § 173.159a Exceptions for non-spillable batteries. (a) Exceptions for hazardous...-spillable batteries offered for transportation or transported in accordance with this section are subject to...

  20. 49 CFR 173.159a - Exceptions for non-spillable batteries.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 49 Transportation 2 2013-10-01 2013-10-01 false Exceptions for non-spillable batteries. 173.159a... Class 1 and Class 7 § 173.159a Exceptions for non-spillable batteries. (a) Exceptions for hazardous...-spillable batteries offered for transportation or transported in accordance with this section are subject to...

  1. 49 CFR 173.159a - Exceptions for non-spillable batteries.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 49 Transportation 2 2014-10-01 2014-10-01 false Exceptions for non-spillable batteries. 173.159a... Class 1 and Class 7 § 173.159a Exceptions for non-spillable batteries. (a) Exceptions for hazardous...-spillable batteries offered for transportation or transported in accordance with this section are subject to...

  2. 49 CFR 173.159a - Exceptions for non-spillable batteries.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 49 Transportation 2 2011-10-01 2011-10-01 false Exceptions for non-spillable batteries. 173.159a... Class 1 and Class 7 § 173.159a Exceptions for non-spillable batteries. (a) Exceptions for hazardous...-spillable batteries offered for transportation or transported in accordance with this section are subject to...

  3. 49 CFR 173.159a - Exceptions for non-spillable batteries.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 49 Transportation 2 2012-10-01 2012-10-01 false Exceptions for non-spillable batteries. 173.159a... Class 1 and Class 7 § 173.159a Exceptions for non-spillable batteries. (a) Exceptions for hazardous...-spillable batteries offered for transportation or transported in accordance with this section are subject to...

  4. Composition effects on mechanical properties of tungsten-rhenium-hafnium-carbon alloys

    NASA Technical Reports Server (NTRS)

    Witzke, W. R.

    1973-01-01

    The mechanical properties of rod and sheet fabricated from arc melted W-4Re-Hf-C alloys containing up to about 0.8 mol percent hafnium carbide (HfC) were evaluated in the as-worked condition. The DBTT's of electropolished bend and tensile specimens were independent of HfC content in this range but dependent on excess Hf or C above that required for stoichiometric HfC. Low temperature ductility was a maximum at Hf contents slightly in excess of stoichiometric. Variations in high temperature strength were also dependent on excess Hf and C. Maximum creep strengthening also occurred at Hf contents in excess of stoichiometric. Analysis of extracted second phase particles indicated that creep strength was reduced by increasing WC content in the HfC particles.

  5. 76 FR 67019 - Eighty-Seventh: RTCA Special Committee 159: Global Positioning System (GPS)

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-28

    ... Committee 159: Global Positioning System (GPS) 87th meeting. DATES: The meeting will be held November 14-18... Committee 159, Global Positioning System (GPS). The agenda will include the following: November 14-17, 2011... Committee 159: Global Positioning System (GPS) AGENCY: Federal Aviation Administration (FAA), U.S...

  6. The H159A mutant of yeast enolase 1 has significant activity.

    PubMed

    Brewer, J M; Holland, M J; Lebioda, L

    2000-10-05

    The function of His159 in the enolase mechanism is disputed. Recently, Vinarov and Nowak (Biochemistry (1999) 38, 12138-12149) prepared the H159A mutant of yeast enolase 1 and expressed this in Escherichia coli. They reported minimal (ca. 0.01% of the native value) activity, though the protein appeared to be correctly folded, according to its CD spectrum, tryptophan fluorescence, and binding of metal ion and substrate. We prepared H159A enolase using a multicopy plasmid and expressed the enzyme in yeast. Our preparations of H159A enolase have 0.2-0.4% of the native activity under standard assay conditions and are further activated by Mg(2+) concentrations above 1 mM to 1-1.5% of the native activity. Native enolase 1 (and enolase 2) are inhibited by such Mg(2+) concentrations. It is possible that His159 is necessary for correct folding of the enzyme and that expression in E. coli leads to largely misfolded protein. Copyright 2000 Academic Press.

  7. 33 CFR 159.131 - Safety: Incinerating device.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.131 Safety.... Unitized incineration devices must completely burn to a dry, inert ash, a simultaneous defecation and...

  8. 45 CFR 1706.152-1706.159 - [Reserved

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... AND INFORMATION SCIENCE ENFORCEMENT OF NONDISCRIMINATION ON THE BASIS OF HANDICAP IN PROGRAMS OR ACTIVITIES CONDUCTED BY NATIONAL COMMISSION ON LIBRARIES AND INFORMATION SCIENCE §§ 1706.152-1706.159...

  9. 45 CFR 1706.152-1706.159 - [Reserved

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... AND INFORMATION SCIENCE ENFORCEMENT OF NONDISCRIMINATION ON THE BASIS OF HANDICAP IN PROGRAMS OR ACTIVITIES CONDUCTED BY NATIONAL COMMISSION ON LIBRARIES AND INFORMATION SCIENCE §§ 1706.152-1706.159...

  10. 45 CFR 1706.152-1706.159 - [Reserved

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... AND INFORMATION SCIENCE ENFORCEMENT OF NONDISCRIMINATION ON THE BASIS OF HANDICAP IN PROGRAMS OR ACTIVITIES CONDUCTED BY NATIONAL COMMISSION ON LIBRARIES AND INFORMATION SCIENCE §§ 1706.152-1706.159...

  11. 45 CFR 1706.152-1706.159 - [Reserved

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... AND INFORMATION SCIENCE ENFORCEMENT OF NONDISCRIMINATION ON THE BASIS OF HANDICAP IN PROGRAMS OR ACTIVITIES CONDUCTED BY NATIONAL COMMISSION ON LIBRARIES AND INFORMATION SCIENCE §§ 1706.152-1706.159...

  12. 45 CFR 1706.152-1706.159 - [Reserved

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... AND INFORMATION SCIENCE ENFORCEMENT OF NONDISCRIMINATION ON THE BASIS OF HANDICAP IN PROGRAMS OR ACTIVITIES CONDUCTED BY NATIONAL COMMISSION ON LIBRARIES AND INFORMATION SCIENCE §§ 1706.152-1706.159...

  13. 32 CFR 159.2 - Applicability and scope.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... CONTRACTORS OPERATING IN CONTINGENCY OPERATIONS § 159.2 Applicability and scope. This part: (a) Applies to: (1... PSCs and PSC personnel performing private security functions during contingency operations outside the...

  14. 77 FR 56254 - 89th Meeting: RTCA Special Committee 159, Global Positioning Systems (GPS)

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-09-12

    ... 159, Global Positioning Systems (GPS). SUMMARY: The FAA is issuing this notice to advise the public of the eighty-ninth meeting of the RTCA Special Committee 159, Global Positioning Systems (GPS). DATES... 159, Global Positioning Systems (GPS) AGENCY: Federal Aviation Administration (FAA), U.S. Department...

  15. 76 FR 27744 - Eighty-Fifth Meeting: RTCA Special Committee 159: Global Positioning System (GPS)

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-05-12

    ... Committee 159: Global Positioning System (GPS) AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of RTCA Special Committee 159 meeting: Global Positioning System (GPS). SUMMARY: The FAA is issuing this notice to advise the public of a meeting of RTCA Special Committee 159: Global Positioning...

  16. 75 FR 28318 - Eighty-Second Meeting: RTCA Special Committee 159: Global Positioning System (GPS)

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-05-20

    ... Committee 159: Global Positioning System (GPS) AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of RTCA Special Committee 159 meeting: Global Positioning System (GPS). SUMMARY: The FAA is issuing this notice to advise the public of a meeting of RTCA Special Committee 159: Global Positioning...

  17. 78 FR 13396 - 90th Meeting: RTCA Special Committee 159, Global Positioning Systems (GPS)

    Federal Register 2010, 2011, 2012, 2013, 2014

    2013-02-27

    ... 159, Global Positioning Systems (GPS) SUMMARY: The FAA is issuing this notice to advise the public of the eighty-ninth meeting of the RTCA Special Committee 159, Global Positioning Systems (GPS). DATES... 159, Global Positioning Systems (GPS) AGENCY: Federal Aviation Administration (FAA), U.S. Department...

  18. 75 FR 2581 - Eighty-First Meeting: RTCA Special Committee 159: Global Positioning System (GPS)

    Federal Register 2010, 2011, 2012, 2013, 2014

    2010-01-15

    ... Committee 159: Global Positioning System (GPS) AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of RTCA Special Committee 159 meeting: Global Positioning System (GPS). SUMMARY: The FAA is issuing this notice to advise the public of a meeting of RTCA Special Committee 159: Global Positioning...

  19. 76 FR 33022 - Eighty-Sixth Meeting: RTCA Special Committee 159: Global Positioning System (GPS)

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-06-07

    ... Committee 159: Global Positioning System (GPS) AGENCY: Federal Aviation Administration (FAA), DOT. ACTION: Notice of RTCA Special Committee 159 meeting: Global Positioning System (GPS). SUMMARY: The FAA is...), notice is hereby given for a Special Committee 159: Global Positioning System (GPS) meeting. The agenda...

  20. 46 CFR 159.010-7 - Recognized independent laboratory: Memorandum of Understanding.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 6 2010-10-01 2010-10-01 false Recognized independent laboratory: Memorandum of Understanding. 159.010-7 Section 159.010-7 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED...: Memorandum of Understanding. (a) Only laboratories that have entered into an MOU with the Coast Guard may...

  1. Dysprosium-159 for transmission imaging and bone mineral analysis.

    PubMed

    Rao, D V; Govelitz, G F; Sastry, K S

    1977-01-01

    The suitability of the intense Kalpha x rays of terbium emitted in the electron-capture decay of 159Dy for use in transmission imaging and bone mineral analysis is investigated. It is found that this radionuclide offers all the advantages of radiations from 210 Pb and none of the disadvantages inherent in the use of the latter. Yields of the Kalpha and Kbeta x rays of terbium and the 58-keV gamma rays emitted in 159 Dy decay are determined using a high-resolution Si(Li) photon spectrometer. Attenuation coefficients for these photons in gadolinium (critical) absorber are measured in a narrow-beam geometry. For Tb Kbeta x rays, whose average energy is only about 0.4 keV above the K edge or Gd, our experimental attenuation coefficient is about 10% less than the theoretical value given by Storm and Israel. Transmission images of regular and irregular bones obtained using 159Dy are presented.

  2. The 11/2{sup -}[505] neutron extruder orbital in {sup 159}Sm

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Urban, W.; Faculty of Physics, University of Warsaw, ul. Hoza 69, PL-00-681 Warsaw; Pinston, J. A.

    Excited states in {sup 159}Sm, populated following the spontaneous fission of {sup 252}Cf have been studied by means of {gamma} spectroscopy, using the Gammasphere array. In {sup 159}Sm we have identified an isomeric level with a half-life of T{sub 1/2}=116(8) ns at an excitation energy of 1276.8 keV and observed a rotational band on top of this isomer. On the basis of the observed properties of the isomer and the band on top of it we propose that the 1276.8-keV level in {sup 159}Sm corresponds to the 11/2{sup -}[505] neutron extruder configuration. The new excitation scheme of {sup 159}Sm ismore » compared to quasiparticle rotor model calculations.« less

  3. 46 CFR 159.007-11 - Production inspections and tests: Yearly report.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 6 2010-10-01 2010-10-01 false Production inspections and tests: Yearly report. 159.007-11 Section 159.007-11 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) EQUIPMENT, CONSTRUCTION, AND MATERIALS: SPECIFICATIONS AND APPROVAL APPROVAL OF EQUIPMENT AND MATERIALS Production Inspection and Tests of Approved Equipment an...

  4. 46 CFR 159.007-11 - Production inspections and tests: Yearly report.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 6 2011-10-01 2011-10-01 false Production inspections and tests: Yearly report. 159.007-11 Section 159.007-11 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) EQUIPMENT, CONSTRUCTION, AND MATERIALS: SPECIFICATIONS AND APPROVAL APPROVAL OF EQUIPMENT AND MATERIALS Production Inspection and Tests of Approved Equipment an...

  5. 29 CFR 780.159 - Forest products.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... Other Unlisted Practices Which May Be within Section 3(f) § 780.159 Forest products. Trees grown in... purpose of the FLSA. (See § 780.205 regarding production of Christmas trees.) It follows that employment in the production, cultivation, growing, and harvesting of such trees or timber products is not...

  6. 24 CFR 982.159 - Audit requirements.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ...) OFFICE OF ASSISTANT SECRETARY FOR PUBLIC AND INDIAN HOUSING, DEPARTMENT OF HOUSING AND URBAN DEVELOPMENT... Administration of Program § 982.159 Audit requirements. (a) The PHA must engage and pay an independent public accountant to conduct audits in accordance with HUD requirements. (b) The PHA is subject to the audit...

  7. 29 CFR 780.159 - Forest products.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... Other Unlisted Practices Which May Be within Section 3(f) § 780.159 Forest products. Trees grown in... purpose of the FLSA. (See § 780.205 regarding production of Christmas trees.) It follows that employment in the production, cultivation, growing, and harvesting of such trees or timber products is not...

  8. 29 CFR 780.159 - Forest products.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... Other Unlisted Practices Which May Be within Section 3(f) § 780.159 Forest products. Trees grown in... purpose of the FLSA. (See § 780.205 regarding production of Christmas trees.) It follows that employment in the production, cultivation, growing, and harvesting of such trees or timber products is not...

  9. 29 CFR 780.159 - Forest products.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... Other Unlisted Practices Which May Be within Section 3(f) § 780.159 Forest products. Trees grown in... purpose of the FLSA. (See § 780.205 regarding production of Christmas trees.) It follows that employment in the production, cultivation, growing, and harvesting of such trees or timber products is not...

  10. 29 CFR 780.159 - Forest products.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... Other Unlisted Practices Which May Be within Section 3(f) § 780.159 Forest products. Trees grown in... purpose of the FLSA. (See § 780.205 regarding production of Christmas trees.) It follows that employment in the production, cultivation, growing, and harvesting of such trees or timber products is not...

  11. 40 CFR 159.167 - Discontinued studies.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 23 2010-07-01 2010-07-01 false Discontinued studies. 159.167 Section... Discontinued studies. The fact that a study has been discontinued before the planned termination must be reported to EPA, with the reason for termination, if submission of information concerning the study is, or...

  12. 40 CFR 159.167 - Discontinued studies.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 24 2011-07-01 2011-07-01 false Discontinued studies. 159.167 Section... Discontinued studies. The fact that a study has been discontinued before the planned termination must be reported to EPA, with the reason for termination, if submission of information concerning the study is, or...

  13. Pyroelectricity of silicon-doped hafnium oxide thin films

    NASA Astrophysics Data System (ADS)

    Jachalke, Sven; Schenk, Tony; Park, Min Hyuk; Schroeder, Uwe; Mikolajick, Thomas; Stöcker, Hartmut; Mehner, Erik; Meyer, Dirk C.

    2018-04-01

    Ferroelectricity in hafnium oxide thin films is known to be induced by various doping elements and in solid-solution with zirconia. While a wealth of studies is focused on their basic ferroelectric properties and memory applications, thorough studies of the related pyroelectric properties and their application potential are only rarely found. This work investigates the impact of Si doping on the phase composition and ferro- as well as pyroelectric properties of thin film capacitors. Dynamic hysteresis measurements and the field-free Sharp-Garn method were used to correlate the reported orthorhombic phase fractions with the remanent polarization and pyroelectric coefficient. Maximum values of 8.21 µC cm-2 and -46.2 µC K-1 m-2 for remanent polarization and pyroelectric coefficient were found for a Si content of 2.0 at%, respectively. Moreover, temperature-dependent measurements reveal nearly constant values for the pyroelectric coefficient and remanent polarization over the temperature range of 0 ° C to 170 ° C , which make the material a promising candidate for IR sensor and energy conversion applications beyond the commonly discussed use in memory applications.

  14. DC-159a Shows Inhibitory Activity against DNA Gyrases of Mycobacterium leprae.

    PubMed

    Yamaguchi, Tomoyuki; Yokoyama, Kazumasa; Nakajima, Chie; Suzuki, Yasuhiko

    2016-09-01

    Fluoroquinolones are a class of antibacterial agents used for leprosy treatment. Some new fluoroquinolones have been attracting interest due to their remarkable potency that is reportedly better than that of ofloxacin, the fluoroquinolone currently recommended for treatment of leprosy. For example, DC-159a, a recently developed 8-methoxy fluoroquinolone, has been found to be highly potent against various bacterial species. Nonetheless, the efficacy of DC-159a against Mycobacterium leprae is yet to be examined. To gather data that can support highly effective fluoroquinolones as candidates for new remedies for leprosy treatment, we conducted in vitro assays to assess and compare the inhibitory activities of DC-159a and two fluoroquinolones that are already known to be more effective against M. leprae than ofloxacin. The fluoroquinolone-inhibited DNA supercoiling assay using recombinant DNA gyrases of wild type and ofloxacin-resistant M. leprae revealed that inhibitory activities of DC-159a and sitafloxacin were at most 9.8- and 11.9-fold higher than moxifloxacin. Also the fluoroquinolone-mediated cleavage assay showed that potencies of those drugs were at most 13.5- and 9.8-fold higher than moxifloxacin. In addition, these two drugs retained their inhibitory activities even against DNA gyrases of ofloxacin-resistant M. leprae. The results indicated that DC-159a and sitafloxacin are more effective against wild type and mutant M. leprae DNA gyrases than moxifloxacin, suggesting that these antibacterial drugs can be good candidates that may supersede current fluoroquinolone remedies. DC-159a in particular is very promising because it is classified in a subgroup of fluoroquinolones that is known to be less likely to cause adverse effects. Our results implied that DC-159a is well worth further investigation to ascertain its in vivo effectiveness and clinical safety for humans.

  15. 40 CFR 159.178 - Information on pesticides in or on food, feed or water.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 24 2011-07-01 2011-07-01 false Information on pesticides in or on food, feed or water. 159.178 Section 159.178 Protection of Environment ENVIRONMENTAL PROTECTION AGENCY (CONTINUED) PESTICIDE PROGRAMS STATEMENTS OF POLICIES AND INTERPRETATIONS Reporting Requirements for Risk/Benefit Information § 159.178 Information o...

  16. Zirconium and hafnium fractionation in differentiation of alkali carbonatite magmatic systems

    NASA Astrophysics Data System (ADS)

    Kogarko, L. N.

    2016-05-01

    Zirconium and hafnium are valuable strategic metals which are in high demand in industry. The Zr and Hf contents are elevated in the final products of magmatic differentiation of alkali carbonatite rocks in the Polar Siberia region (Guli Complex) and Ukraine (Chernigov Massif). Early pyroxene fractionation led to an increase in the Zr/Hf ratio in the evolution of the ultramafic-alkali magmatic system due to a higher distribution coefficient of Hf in pyroxene with respect to Zr. The Rayleigh equation was used to calculate a quantitative model of variation in the Zr/Hf ratio in the development of the Guli magmatic system. Alkali carbonatite rocks originated from rare element-rich mantle reservoirs, in particular, the metasomatized mantle. Carbonated mantle xenoliths are characterized by a high Zr/Hf ratio due to clinopyroxene development during metasomatic replacement of orthopyroxene by carbonate fluid melt.

  17. Experimental and first-principles studies on the elastic properties of α-hafnium metal under pressure

    DOE PAGES

    Qi, Xintong; Wang, Xuebing; Chen, Ting; ...

    2016-03-30

    Compressional and shear wave velocities of the α phase of hafnium have been measured up to 10.4 GPa at room temperature using ultrasonic interferometry in a multi-anvil apparatus. A finite strain equation of state analysis yielded K s0 = 110.4 (5) GPa, G 0 = 54.7(5) GPa,K s0' = 3.7 and G 0' = 0.6 for the elastic bulk and shear moduli and their pressure derivatives at ambient conditions. Complementary to the experimental data, the single crystal elastic constants, elastic anisotropy and the unit cell axial ratio c/a of α-hafnium at high pressures were investigated by Density Functional Theory (DFT)more » based first principles calculations. A c/a value of 1.605 is predicted for α-Hf at 40 GPa, which is in excellent agreement with previous experimental results. The low-pressure derivative of the shear modulus observed in our experimental data up to 10 GPa was found to originate from the elastic constant C44 which exhibits negligible pressure dependence within the current experimental pressure range. At higher pressures (>10 GPa), C 44 was predicted to soften and the shear wave velocity ν S trended to decrease with pressure, which can be interpreted as a precursor to the α-ω transition similar to that observed in other group IV elements (titanium and zirconium). Here, the acoustic velocities, bulk and shear moduli, and the acoustic Debye temperature (θ D = 240.1 K) determined from the current experiments were all compared well with those predicted by our theoretical DFT calculations.« less

  18. Stress-rupture strength and microstructural stability of tungsten-hafnium-carbon-wire reinforced superalloy composites

    NASA Technical Reports Server (NTRS)

    Petrasek, D. W.; Signorelli, R. A.

    1974-01-01

    Tungsten-hafnium-carbon - superalloy composites were found to be potentially useful for turbine blade applications on the basis of stress-rupture strength. The 100- and 1000-hr rupture strengths calculated for 70 vol. % fiber composites based on test data at 1090C (2000F) were 420 and 280 MN/m2 (61,000 and 41,000 psi, respectively). The investigation indicated that, with better quality fibers, composites having 100- and 1000-hr rupture strengths of 570 and 370 MN/m2 (82,000 and 54,000 psi, respectively), may be obtained. Metallographic studies indicated sufficient fiber-matrix compatibility for 1000 hr or more at 1090C (2000F).

  19. Silicon doped hafnium oxide (HSO) and hafnium zirconium oxide (HZO) based FeFET: A material relation to device physics

    NASA Astrophysics Data System (ADS)

    Ali, T.; Polakowski, P.; Riedel, S.; Büttner, T.; Kämpfe, T.; Rudolph, M.; Pätzold, B.; Seidel, K.; Löhr, D.; Hoffmann, R.; Czernohorsky, M.; Kühnel, K.; Thrun, X.; Hanisch, N.; Steinke, P.; Calvo, J.; Müller, J.

    2018-05-01

    The recent discovery of ferroelectricity in thin film HfO2 materials renewed the interest in ferroelectric FET (FeFET) as an emerging nonvolatile memory providing a potential high speed and low power Flash alternative. Here, we report more insight into FeFET performance by integrating two types of ferroelectric (FE) materials and varying their properties. By varying the material type [HfO2 (HSO) versus hafnium zirconium oxide (HZO)], optimum content (Si doping/mixture ratio), and film thickness, a material relation to FeFET device physics is concluded. As for the material type, an improved FeFET performance is observed for HZO integration with memory window (MW) comparable to theoretical values. For different Si contents, the HSO based FeFET exhibited a MW trend with different stabilized phases. Similarly, the HZO FeFET shows MW dependence on the Hf:Zr mixture ratio. A maximized MW is obtained with cycle ratios of 16:1 (HfO2:Si) and 1:1 (Hf:Zr) as measured on HSO and HZO based FeFETs, respectively. The thickness variation shows a trend of increasing MW with the increased FE layer thickness confirming early theoretical predictions. The FeFET material aspects and stack physics are discussed with insight into the interplay factors, while optimum FE material parameters are outlined in relation to performance.

  20. 19 CFR 159.58 - Dumping and countervailing duties; action by port director.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 19 Customs Duties 2 2013-04-01 2013-04-01 false Dumping and countervailing duties; action by port director. 159.58 Section 159.58 Customs Duties U.S. CUSTOMS AND BORDER PROTECTION, DEPARTMENT OF HOMELAND... Dumping and countervailing duties; action by port director. (a) Antidumping matters. Upon receipt of...

  1. 19 CFR 159.58 - Dumping and countervailing duties; action by port director.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 19 Customs Duties 2 2011-04-01 2011-04-01 false Dumping and countervailing duties; action by port director. 159.58 Section 159.58 Customs Duties U.S. CUSTOMS AND BORDER PROTECTION, DEPARTMENT OF HOMELAND... Dumping and countervailing duties; action by port director. (a) Antidumping matters. Upon receipt of...

  2. 19 CFR 159.58 - Dumping and countervailing duties; action by port director.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 19 Customs Duties 2 2012-04-01 2012-04-01 false Dumping and countervailing duties; action by port director. 159.58 Section 159.58 Customs Duties U.S. CUSTOMS AND BORDER PROTECTION, DEPARTMENT OF HOMELAND... Dumping and countervailing duties; action by port director. (a) Antidumping matters. Upon receipt of...

  3. 19 CFR 159.58 - Dumping and countervailing duties; action by port director.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 19 Customs Duties 2 2010-04-01 2010-04-01 false Dumping and countervailing duties; action by port director. 159.58 Section 159.58 Customs Duties U.S. CUSTOMS AND BORDER PROTECTION, DEPARTMENT OF HOMELAND... Dumping and countervailing duties; action by port director. (a) Antidumping matters. Upon receipt of...

  4. 19 CFR 159.58 - Dumping and countervailing duties; action by port director.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 19 Customs Duties 2 2014-04-01 2014-04-01 false Dumping and countervailing duties; action by port director. 159.58 Section 159.58 Customs Duties U.S. CUSTOMS AND BORDER PROTECTION, DEPARTMENT OF HOMELAND... Dumping and countervailing duties; action by port director. (a) Antidumping matters. Upon receipt of...

  5. 46 CFR 159.007-3 - Production inspections and tests: Independent laboratory's procedures.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 6 2011-10-01 2011-10-01 false Production inspections and tests: Independent laboratory's procedures. 159.007-3 Section 159.007-3 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) EQUIPMENT, CONSTRUCTION, AND MATERIALS: SPECIFICATIONS AND APPROVAL APPROVAL OF EQUIPMENT AND MATERIALS Production Inspection and Tests of...

  6. 46 CFR 159.007-3 - Production inspections and tests: Independent laboratory's procedures.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 6 2010-10-01 2010-10-01 false Production inspections and tests: Independent laboratory's procedures. 159.007-3 Section 159.007-3 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) EQUIPMENT, CONSTRUCTION, AND MATERIALS: SPECIFICATIONS AND APPROVAL APPROVAL OF EQUIPMENT AND MATERIALS Production Inspection and Tests of...

  7. 46 CFR 159.007-5 - Production inspections and tests: Application for acceptance.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 6 2010-10-01 2010-10-01 false Production inspections and tests: Application for acceptance. 159.007-5 Section 159.007-5 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) EQUIPMENT, CONSTRUCTION, AND MATERIALS: SPECIFICATIONS AND APPROVAL APPROVAL OF EQUIPMENT AND MATERIALS Production Inspection and Tests of Approved...

  8. 46 CFR 159.007-5 - Production inspections and tests: Application for acceptance.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 6 2011-10-01 2011-10-01 false Production inspections and tests: Application for acceptance. 159.007-5 Section 159.007-5 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) EQUIPMENT, CONSTRUCTION, AND MATERIALS: SPECIFICATIONS AND APPROVAL APPROVAL OF EQUIPMENT AND MATERIALS Production Inspection and Tests of Approved...

  9. Nuclear Data Sheets for A=159

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Reich C. W.; Reich,C.W.

    2012-01-01

    The experimental results from the various reaction and radioactive decay studies leading to nuclides in the A = 159 mass chain have been reviewed. Nuclides ranging from Pm (Z = 61) through Os (Z = 74) are included. These data are summarized and presented, together with adopted level schemes and properties. This work supersedes the previous evaluation of the data on these nuclides (2003He11).

  10. Atomic layer deposition of hafnium oxide: A detailed reaction mechanism from first principles

    NASA Astrophysics Data System (ADS)

    Widjaja, Yuniarto; Musgrave, Charles B.

    2002-08-01

    Atomic layer deposition (ALD) of hafnium oxide (HfO2) using HfCl4 and H2O as precursors is studied using density functional theory. The mechanism consists of two deposition half-reactions: (1) HfCl4 with Hf-OH sites, and (2) H2O with Hf-Cl sites. Both half-reactions exhibit stable intermediates with energies lower than those of the final products. We show that increasing the temperature reduces the stability of the complex. However, increasing temperature also increases the dissociation free-energy barrier, which in turn results in increased desorption of adsorbed precursors. Both half-reactions are qualitatively similar to the corresponding reactions of ZrO2 ALD using ZrCl4 and H2O.

  11. Chloroplast Preproteins Bind to the Dimer Interface of the Toc159 Receptor during Import1[OPEN

    PubMed Central

    Chen, Lih-Jen; Yeh, Yi-Hung; Hsiao, Chwan-Deng

    2017-01-01

    Most chloroplast proteins are synthesized in the cytosol as higher molecular weight preproteins and imported via the translocons in the outer (TOC) and inner (TIC) envelope membranes of chloroplasts. Toc159 functions as a primary receptor and directly binds preproteins through its dimeric GTPase domain. As a first step toward a molecular understanding of how Toc159 mediates preprotein import, we mapped the preprotein-binding regions on the Toc159 GTPase domain (Toc159G) of pea (Pisum sativum) using cleavage by bound preproteins conjugated with the artificial protease FeBABE and cysteine-cysteine cross-linking. Our results show that residues at the dimer interface and the switch II region of Toc159G are in close proximity to preproteins. The mature portion of preproteins was observed preferentially at the dimer interface, whereas the transit peptide was found at both regions equally. Chloroplasts from transgenic plants expressing engineered Toc159 with a cysteine placed at the dimer interface showed increased cross-linking to bound preproteins. Our data suggest that, during preprotein import, the Toc159G dimer disengages and the dimer interface contacts translocating preproteins, which is consistent with a model in which conformational changes induced by dimer-monomer conversion in Toc159 play a direct role in facilitating preprotein import. PMID:28250068

  12. The M-Y Axilloplasty After Massive Weight Loss: Analysis of 159 Consecutive Patients.

    PubMed

    Boccara, David; Petit, Arnaud; Reinbold, Christophe; Chaouat, Marc; Mimoun, Maurice; Serror, Kevin

    2018-05-10

    Brachioplasties often culminate in unsightly scars that are a source of disappointment to patients. We aimed to evaluate the results of M-Y axilloplasty following massive weight loss. We performed a retrospective assessment of our technique for brachioplasty with an M-Y axilloplasty in 159 female patients after massive weight loss. This retrospective study covered a study period of 10 years. After substantial lipoaspiration, the incision is placed on the internal side of the arm, with an M-shaped axilloplasty. The satisfaction rate was 154/159 (97%) and 120/159 (75.5%) being happy with their esthetic results. Nineteen percent (30/159) of the patients had complications and 12/159 (7.5%) underwent a surgical revision. M-Y axilloplasty for brachioplasty is an effective procedure for treating women who are unhappy with their upper arms after massive weight loss. The satisfaction rate is high, and the result leaves no excess skin on the chest. This journal requires that authors assign a level of evidence to each article. For a full description of these Evidence-Based Medicine ratings, please refer to the Table of Contents or the online Instructions to Authors www.springer.com/00266 .

  13. Intrinsic Defect Ferromagnetism: The case of Hafnium Oxide

    NASA Astrophysics Data System (ADS)

    Das Pemmaraju, Chaitanya

    2005-03-01

    In view of the recent experimental reports of intrinsic ferromagnetism in Hafnium Oxide (HfO2) thin film systems ootnotetextM. Venkatesan, C. B. Fitzgerald, J. M. D. Coey Nature 430, 630 (2004) Brief Communications, we carried out first principles investigations to look for magnetic structure in HfO2 possibly brought about by the presence of small concentrations of intrinsic point defects. Ab initio electronic structure calculations using Density Functional Theory (DFT) show that isolated cation vacancy sites in HfO2 lead to the formation of high spin defect states which couple ferromagnetically to each other. Interestingly, these high spin states are observed in the low symmetry monoclinic and tetragonal phases while the highly symmetric cubic flourite phase exhibits a non-magnetic ground state. Detailed studies of the electronic structure of cation vacancies in the three crystalline phases of Hafnia show that symmetry leading to orbitally degenerate defect levels is not a pre-requsite for ferromagnetism and that the interplay between Kinetic, Coulomb and Exchange energy together with favourable coupling to the Crystalline environment can lead to high spin ferromagnetic ground states even in extreme low symmetry systems like monoclinic HfO2. These findings open up a much wider class of systems to the possibility of intrinsic defect ferromagnetism.

  14. Work functions of hafnium nitride thin films as emitter material for field emitter arrays

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Gotoh, Yasuhito, E-mail: gotoh.yasuhito.5w@kyoto-u.ac.jp; Fujiwara, Sho; Tsuji, Hiroshi

    The work functions of hafnium nitride thin films prepared by radio-frequency magnetron sputtering were investigated in vacuum, before and after surface cleaning processes, with a view of improving the properties of as-fabricated field emitter arrays comprising hafnium nitride emitters. The measurement of the work function was first performed for the as-deposited films and then for films subjected to surface cleaning process, either thermal treatment or ion bombardment. Thermal treatment at a maximum temperature of 300 °C reduced the work function by 0.7 eV. Once the film was heated, the work function maintained the reduced value, even after cooling to room temperature. Amore » little change in the work function was observed for the second and third thermal treatments. The ion bombardment was conducted by exposing the sample to a thin plasma for different sample bias conditions and processing times. When the sample was biased at −10 V, the work function decreased by 0.6 eV. The work function reduction became saturated in the early stage of the ion bombardment. When the sample was biased at −50 V, the work function exhibited different behaviors, that is, first it decreased rapidly and then increased in response to the increase in processing time. The lowest attainable work function was found to be 4.00 eV. It should be noted that none of the work function values reported in this paper were obtained using surfaces that were demonstrated to be free from oxygen contamination. The present results suggest that the current–voltage characteristics of a field emitter array can be improved by a factor of 25–50 by the examined postprocesses.« less

  15. 19 CFR 159.34 - Certified quarterly rate.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... TREASURY (CONTINUED) LIQUIDATION OF DUTIES Conversion of Foreign Currency § 159.34 Certified quarterly rate. (a) Countries for which quarterly rate is certified. For the currency of each of the following... York for such foreign currency for a day in that quarter: Australia, Austria, Belgium, Brazil, Canada...

  16. 19 CFR 159.44 - Special duties on merchandise imported under agreements in restraint of trade.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 19 Customs Duties 2 2010-04-01 2010-04-01 false Special duties on merchandise imported under agreements in restraint of trade. 159.44 Section 159.44 Customs Duties U.S. CUSTOMS AND BORDER PROTECTION, DEPARTMENT OF HOMELAND SECURITY; DEPARTMENT OF THE TREASURY (CONTINUED) LIQUIDATION OF DUTIES Special Duties § 159.44 Special duties on merchandise...

  17. 19 CFR 159.44 - Special duties on merchandise imported under agreements in restraint of trade.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 19 Customs Duties 2 2013-04-01 2013-04-01 false Special duties on merchandise imported under agreements in restraint of trade. 159.44 Section 159.44 Customs Duties U.S. CUSTOMS AND BORDER PROTECTION, DEPARTMENT OF HOMELAND SECURITY; DEPARTMENT OF THE TREASURY (CONTINUED) LIQUIDATION OF DUTIES Special Duties § 159.44 Special duties on merchandise...

  18. 19 CFR 159.44 - Special duties on merchandise imported under agreements in restraint of trade.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 19 Customs Duties 2 2011-04-01 2011-04-01 false Special duties on merchandise imported under agreements in restraint of trade. 159.44 Section 159.44 Customs Duties U.S. CUSTOMS AND BORDER PROTECTION, DEPARTMENT OF HOMELAND SECURITY; DEPARTMENT OF THE TREASURY (CONTINUED) LIQUIDATION OF DUTIES Special Duties § 159.44 Special duties on merchandise...

  19. 19 CFR 159.44 - Special duties on merchandise imported under agreements in restraint of trade.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 19 Customs Duties 2 2012-04-01 2012-04-01 false Special duties on merchandise imported under agreements in restraint of trade. 159.44 Section 159.44 Customs Duties U.S. CUSTOMS AND BORDER PROTECTION, DEPARTMENT OF HOMELAND SECURITY; DEPARTMENT OF THE TREASURY (CONTINUED) LIQUIDATION OF DUTIES Special Duties § 159.44 Special duties on merchandise...

  20. The interfacial orientation relationship of oxide nanoparticles in a hafnium-containing oxide dispersion-strengthened austenitic stainless steel

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Miao, Yinbin, E-mail: miao2@illinois.edu; Mo, Kun; Cui, Bai

    2015-03-15

    This work reports comprehensive investigations on the orientation relationship of the oxide nanoparticles in a hafnium-containing austenitic oxide dispersion-strengthened 316 stainless steel. The phases of the oxide nanoparticles were determined by a combination of scanning transmission electron microscopy–electron dispersive X-ray spectroscopy, atom probe tomography and synchrotron X-ray diffraction to be complex Y–Ti–Hf–O compounds with similar crystal structures, including bixbyite Y{sub 2}O{sub 3}, fluorite Y{sub 2}O{sub 3}–HfO{sub 2} solid solution and pyrochlore (or fluorite) Y{sub 2}(Ti,Hf){sub 2−x}O{sub 7−x}. High resolution transmission electron microscopy was used to characterize the particle–matrix interfaces. Two different coherency relationships along with one axis-parallel relation between themore » oxide nanoparticles and the steel matrix were found. The size of the nanoparticles significantly influences the orientation relationship. The results provide insight into the relationship of these nanoparticles with the matrix, which has implications for interpreting material properties as well as responses to radiation. - Highlights: • The oxide nanoparticles in a hafnium-containing austenitic ODS were characterized. • The nanoparticles are Y–Hf–Ti–O enriched phases according to APT and STEM–EDS. • Two coherency and an axis-parallel orientation relationships were found by HR-TEM. • Particle size has a prominent effect on the orientation relationship (OR). • Formation mechanism of the oxide nanoparticles was discussed based on the ORs.« less

  1. 34 CFR 75.159 - Effect of State comments or failure to comment.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 34 Education 1 2013-07-01 2013-07-01 false Effect of State comments or failure to comment. 75.159... Apply for a Grant State Comment Procedures § 75.159 Effect of State comments or failure to comment. (a... applies under the program; or (2) Any other matter that affects the selection of projects for funding...

  2. 34 CFR 75.159 - Effect of State comments or failure to comment.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 34 Education 1 2010-07-01 2010-07-01 false Effect of State comments or failure to comment. 75.159... Apply for a Grant State Comment Procedures § 75.159 Effect of State comments or failure to comment. (a... applies under the program; or (2) Any other matter that affects the selection of projects for funding...

  3. 34 CFR 75.159 - Effect of State comments or failure to comment.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 34 Education 1 2014-07-01 2014-07-01 false Effect of State comments or failure to comment. 75.159... Apply for a Grant State Comment Procedures § 75.159 Effect of State comments or failure to comment. (a... applies under the program; or (2) Any other matter that affects the selection of projects for funding...

  4. 34 CFR 75.159 - Effect of State comments or failure to comment.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 34 Education 1 2012-07-01 2012-07-01 false Effect of State comments or failure to comment. 75.159... Apply for a Grant State Comment Procedures § 75.159 Effect of State comments or failure to comment. (a... applies under the program; or (2) Any other matter that affects the selection of projects for funding...

  5. 34 CFR 75.159 - Effect of State comments or failure to comment.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 34 Education 1 2011-07-01 2011-07-01 false Effect of State comments or failure to comment. 75.159... Apply for a Grant State Comment Procedures § 75.159 Effect of State comments or failure to comment. (a... applies under the program; or (2) Any other matter that affects the selection of projects for funding...

  6. Tailoring the index of refraction of nanocrystalline hafnium oxide thin films

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Vargas, Mirella; Murphy, N. R.; Ramana, C. V., E-mail: rvchintalapalle@utep.edu

    2014-03-10

    Hafnium oxide (HfO{sub 2}) films were grown by sputter-deposition by varying the growth temperature (T{sub s} = 25–700 °C). HfO{sub 2} films grown at T{sub s} < 200 °C were amorphous, while those grown at T{sub s} ≥ 200 °C were monoclinic, nanocrystalline with (1{sup ¯}11) texturing. X-ray reflectivity (XRR) analyses indicate that the film-density (ρ) increases with increasing T{sub s}. The index of refraction (n) profiles derived from spectroscopic ellipsometry analyses follow the Cauchy dispersion relation. Lorentz-Lorenz analysis (n{sub (λ)} = 550 nm) and optical-model adopted agree well with the XRR data/analyses. A direct T{sub s}-ρ-n relationship suggests that tailoring the optical quality is possible by tuning T{sub s} and themore » microstructure of HfO{sub 2} films.« less

  7. 19 CFR 159.36 - Multiple certified rates.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... multiple rates have been certified for a foreign currency, the rate to be used for Customs purposes shall... TREASURY (CONTINUED) LIQUIDATION OF DUTIES Conversion of Foreign Currency § 159.36 Multiple certified rates... rates of exchange (e.g., official and free) for a foreign currency: (a) Rates to be published. When the...

  8. 42 CFR 84.159 - Man tests for gases and vapors; supplied-air respirators; general performance requirements.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 42 Public Health 1 2013-10-01 2013-10-01 false Man tests for gases and vapors; supplied-air respirators; general performance requirements. 84.159 Section 84.159 Public Health PUBLIC HEALTH SERVICE... APPROVAL OF RESPIRATORY PROTECTIVE DEVICES Supplied-Air Respirators § 84.159 Man tests for gases and vapors...

  9. 42 CFR 84.159 - Man tests for gases and vapors; supplied-air respirators; general performance requirements.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 42 Public Health 1 2014-10-01 2014-10-01 false Man tests for gases and vapors; supplied-air respirators; general performance requirements. 84.159 Section 84.159 Public Health PUBLIC HEALTH SERVICE... APPROVAL OF RESPIRATORY PROTECTIVE DEVICES Supplied-Air Respirators § 84.159 Man tests for gases and vapors...

  10. 42 CFR 84.159 - Man tests for gases and vapors; supplied-air respirators; general performance requirements.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 42 Public Health 1 2012-10-01 2012-10-01 false Man tests for gases and vapors; supplied-air respirators; general performance requirements. 84.159 Section 84.159 Public Health PUBLIC HEALTH SERVICE... APPROVAL OF RESPIRATORY PROTECTIVE DEVICES Supplied-Air Respirators § 84.159 Man tests for gases and vapors...

  11. 19 CFR 159.35 - Certified daily rate.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... TREASURY (CONTINUED) LIQUIDATION OF DUTIES Conversion of Foreign Currency § 159.35 Certified daily rate. The daily buying rate of foreign currency which is determined by the Federal Reserve Bank of New York and certified to the Secretary of the Treasury in accordance with 31 U.S.C. 5151(e) shall be used for...

  12. Hafnium-doped hydroxyapatite nanoparticles with ionizing radiation for lung cancer treatment.

    PubMed

    Chen, Min-Hua; Hanagata, Nobutaka; Ikoma, Toshiyuki; Huang, Jian-Yuan; Li, Keng-Yuan; Lin, Chun-Pin; Lin, Feng-Huei

    2016-06-01

    Recently, photodynamic therapy (PDT) is one of the new clinical options by generating cytotoxic reactive oxygen species (ROS) to kill cancer cells. However, the optical approach of PDT is limited by tissue penetration depth of visible light. In this study, we propose that a ROS-enhanced nanoparticle, hafnium-doped hydroxyapatite (Hf:HAp), which is a material to yield large quantities of ROS inside the cells when the nanoparticles are bombarded with high penetrating power of ionizing radiation. Hf:HAp nanoparticles are generated by wet chemical precipitation with total doping concentration of 15mol% Hf(4+) relative to Ca(2+) in HAp host material. The results show that the HAp particles could be successfully doped with Hf ions, resulted in the formation of nano-sized rod-like shape and with pH-dependent solubility. The impact of ionizing radiation on Hf:HAp nanoparticles is assessed by using in-vitro and in-vivo model using A549 cell line. The 2',7'-dichlorofluorescein diacetate (DCFH-DA) results reveal that after being exposed to gamma rays, Hf:HAp could significantly lead to the formation of ROS in cells. Both cell viability (WST-1) and cytotoxicity (LDH) assay show the consistent results that A549 lung cancer cell lines are damaged with changes in the cells' ROS level. The in-vivo studies further demonstrate that the tumor growth is inhibited owing to the cells apoptosis when Hf:HAp nanoparticles are bombarded with ionizing radiation. This finding offer a new therapeutic method of interacting with ionizing radiation and demonstrate the potential of Hf:HAp nanoparticles in tumor treatment, such as being used in a palliative treatment after lung surgical procedure. Photodynamic therapy (PDT) is one of the new clinical options by generating cytotoxic reactive oxygen species (ROS) to kill cancer cells. Unfortunately, the approach of PDT is usually limited to the treatment of systemic disease and deeper tumor, due to the limited tissue penetration depth of visible

  13. 7 CFR 932.159 - Reallocation of handler membership.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 932.159 Agriculture Regulations of the Department of Agriculture (Continued) AGRICULTURAL MARKETING SERVICE (Marketing Agreements and Orders; Fruits, Vegetables, Nuts), DEPARTMENT OF AGRICULTURE OLIVES... are made and in the preceding crop year shall each be represented by four members and four alternate...

  14. 47 CFR 90.159 - Temporary and conditional permits.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... proposed antenna structure has been previously studied by the Federal Aviation Administration and determined to pose no hazard to aviation safety as required by § 17.4 of the Commission's Rules; or the... Section 90.159 Telecommunication FEDERAL COMMUNICATIONS COMMISSION (CONTINUED) SAFETY AND SPECIAL RADIO...

  15. 49 CFR 40.159 - What does the MRO do when a drug test result is invalid?

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 49 Transportation 1 2013-10-01 2013-10-01 false What does the MRO do when a drug test result is invalid? 40.159 Section 40.159 Transportation Office of the Secretary of Transportation PROCEDURES FOR TRANSPORTATION WORKPLACE DRUG AND ALCOHOL TESTING PROGRAMS Medical Review Officers and the Verification Process § 40.159 What does the MRO do when a...

  16. Modifications at the A-domain of the chloroplast import receptor Toc159.

    PubMed

    Agne, Birgit; Kessler, Felix

    2010-11-01

    Two families of GTPases, the Toc34 and Toc159 GTPase families, take on the task of preprotein recognition at the translocon at the outer membrane of chloroplasts (TOC translocon). The major Toc159 family members have highly acidic N-terminal domains (A-domains) that are non-essential and so far have escaped functional characterization. But recently, interest in the role of the A-domain has strongly increased. The new data of three independent studies provide evidence that the Toc159 A-domain I) participates in preprotein selectivity, II) has typical features of intrinsically unfolded proteins and III) is highly phosphorylated and possibly released from the rest of the protein by a proteolytic event. This hints to a complex regulation of A-domain function that is important for the maintenance of the preprotein selectivity at the TOC translocons.

  17. 41 CFR 51-10.152-51-10.159 - [Reserved

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... to Public Contracts COMMITTEE FOR PURCHASE FROM PEOPLE WHO ARE BLIND OR SEVERELY DISABLED 10... FOR PURCHASE FROM PEOPLE WHO ARE BLIND OR SEVERELY DISABLED §§ 51-10.152—51-10.159 [Reserved] ...

  18. 41 CFR 51-10.152-51-10.159 - [Reserved

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... to Public Contracts COMMITTEE FOR PURCHASE FROM PEOPLE WHO ARE BLIND OR SEVERELY DISABLED 10... FOR PURCHASE FROM PEOPLE WHO ARE BLIND OR SEVERELY DISABLED §§ 51-10.152—51-10.159 [Reserved] ...

  19. 41 CFR 51-10.152-51-10.159 - [Reserved

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... to Public Contracts COMMITTEE FOR PURCHASE FROM PEOPLE WHO ARE BLIND OR SEVERELY DISABLED 10... FOR PURCHASE FROM PEOPLE WHO ARE BLIND OR SEVERELY DISABLED §§ 51-10.152—51-10.159 [Reserved] ...

  20. 41 CFR 51-10.152-51-10.159 - [Reserved

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... to Public Contracts COMMITTEE FOR PURCHASE FROM PEOPLE WHO ARE BLIND OR SEVERELY DISABLED 10... FOR PURCHASE FROM PEOPLE WHO ARE BLIND OR SEVERELY DISABLED §§ 51-10.152—51-10.159 [Reserved] ...

  1. 33 CFR 159.16 - Authorization to label devices.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ....S. Coast Guard pursuant to section 312 of the Federal Water Pollution Control Act Amendments of 1972... required by section 312(h)(4) of the Federal Water Pollution Control Act Amendments of 1972, which makes it... (CONTINUED) POLLUTION MARINE SANITATION DEVICES Certification Procedures § 159.16 Authorization to label...

  2. Electron-beam-evaporated thin films of hafnium dioxide for fabricating electronic devices

    DOE PAGES

    Xiao, Zhigang; Kisslinger, Kim

    2015-06-17

    Thin films of hafnium dioxide (HfO 2) are widely used as the gate oxide in fabricating integrated circuits because of their high dielectric constants. In this paper, the authors report the growth of thin films of HfO 2 using e-beam evaporation, and the fabrication of complementary metal-oxide semiconductor (CMOS) integrated circuits using this HfO 2 thin film as the gate oxide. The authors analyzed the thin films using high-resolution transmission electron microscopy and electron diffraction, thereby demonstrating that the e-beam-evaporation-grown HfO 2 film has a polycrystalline structure and forms an excellent interface with silicon. Accordingly, we fabricated 31-stage CMOS ringmore » oscillator to test the quality of the HfO 2 thin film as the gate oxide, and obtained excellent rail-to-rail oscillation waveforms from it, denoting that the HfO 2 thin film functioned very well as the gate oxide.« less

  3. Dysfunctional HDL containing L159R apoA-I leads to exacerbation of atherosclerosis in hyperlipidemic mice

    USDA-ARS?s Scientific Manuscript database

    In this study, the effect of the mutation L159R apoA-I or apoA-IL159R (FIN) was assessed. apoA-IL159R (FIN) is associated with a dominant negative phenotype, displaying hypoalphaproteinemia and an increased risk for atherosclerosis in humans. Transgenic mice lines were created through strategic mati...

  4. 40 CFR 159.165 - Toxicological and ecological studies.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 24 2011-07-01 2011-07-01 false Toxicological and ecological studies... Information § 159.165 Toxicological and ecological studies. Adverse effects information must be submitted as follows: (a) Toxicological studies. (1) The results of a study of the toxicity of a pesticide to humans or...

  5. 40 CFR 159.165 - Toxicological and ecological studies.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 40 Protection of Environment 23 2010-07-01 2010-07-01 false Toxicological and ecological studies... Information § 159.165 Toxicological and ecological studies. Adverse effects information must be submitted as follows: (a) Toxicological studies. (1) The results of a study of the toxicity of a pesticide to humans or...

  6. 77 FR 12106 - 88th Meeting: RTCA Special Committee 159, Global Positioning System (GPS)

    Federal Register 2010, 2011, 2012, 2013, 2014

    2012-02-28

    ... 159, Global Positioning System (GPS) AGENCY: Federal Aviation Administration (FAA), U.S. Department of Transportation (DOT). ACTION: Notice of RTCA Special Committee 159, Global Positioning System (GPS). SUMMARY: The..., Global Positioning System (GPS). DATES: The meeting will be held March 13-16, 2012, from 9 a.m.-4:30 p.m...

  7. Effect of nitrogen on tensile properties and structures of T-111 (tantalum, 8 percent tungsten, 2 percent hafnium) tubing

    NASA Technical Reports Server (NTRS)

    Buzzard, R. J.; Metroka, R. R.

    1973-01-01

    The effect of controlled nitrogen additions was evaluated on the mechanical properties of T-111 (Ta-8W-2Hf) fuel pin cladding material proposed for use in a lithium-cooled nuclear reactor concept. Additions of 80 to 1125 ppm nitrogen resulted in increased strengthening of T-111 tubular section test specimens at temperatures of 25 to 1200 C. Homogeneous distributions of up to 500 ppm nitrogen did not seriously decrease tensile ductility. Both single and two-phase microstructures, with hafnium nitride as the second phase, were evaluated in this study.

  8. 40 CFR 159.188 - Failure of performance information.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... for control of animals that pose a risk to human health, including any of the public health pesticides... Information § 159.188 Failure of performance information. (a) Microorganisms that pose a risk to human health... pesticide to perform as claimed involved the use against microorganisms which may pose a risk to human...

  9. 40 CFR 159.188 - Failure of performance information.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... for control of animals that pose a risk to human health, including any of the public health pesticides... Information § 159.188 Failure of performance information. (a) Microorganisms that pose a risk to human health... pesticide to perform as claimed involved the use against microorganisms which may pose a risk to human...

  10. 40 CFR 159.188 - Failure of performance information.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... for control of animals that pose a risk to human health, including any of the public health pesticides... Information § 159.188 Failure of performance information. (a) Microorganisms that pose a risk to human health... pesticide to perform as claimed involved the use against microorganisms which may pose a risk to human...

  11. 40 CFR 159.188 - Failure of performance information.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... for control of animals that pose a risk to human health, including any of the public health pesticides... Information § 159.188 Failure of performance information. (a) Microorganisms that pose a risk to human health... pesticide to perform as claimed involved the use against microorganisms which may pose a risk to human...

  12. 40 CFR 159.188 - Failure of performance information.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... for control of animals that pose a risk to human health, including any of the public health pesticides... Information § 159.188 Failure of performance information. (a) Microorganisms that pose a risk to human health... pesticide to perform as claimed involved the use against microorganisms which may pose a risk to human...

  13. Pyroelectric response in crystalline hafnium zirconium oxide (Hf 1- x Zr x O 2 ) thin films

    DOE PAGES

    Smith, S. W.; Kitahara, A. R.; Rodriguez, M. A.; ...

    2017-02-13

    Pyroelectric coefficients were measured for 20 nm thick crystalline hafnium zirconium oxide (Hf 1-xZr xO 2) thin films across a composition range of 0 ≤ x ≤ 1. Pyroelectric currents were collected near room temperature under zero applied bias and a sinusoidal oscillating temperature profile to separate the influence of non-pyroelectric currents. The pyroelectric coefficient was observed to correlate with zirconium content, increased orthorhombic/tetragonal phase content, and maximum polarization response. The largest measured absolute value was 48 μCm -2K -1 for a composition with x = 0.64, while no pyroelectric response was measured for compositions which displayed no remanent polarizationmore » (x = 0, 0.91, 1).« less

  14. HSPC159 promotes proliferation and metastasis via inducing EMT and activating PI3K/Akt pathway in breast cancer.

    PubMed

    Zheng, Jie; Zhang, Mengxue; Zhang, Liying; Ding, Xiaodi; Li, Wentong; Lu, Shijun

    2018-05-08

    HSPC159 is a novel human galectin-related protein and has been shown to involved in the carcinogenesis. Little is known about HSPC159 expression and function in breast cancer. Here we showed that HSPC159 was aberrantly expressed in both breast cancer cell lines and tumor tissues and that its expression was associated with poor prognosis of breast cancer patients. Using gain- and loss-of-function methods we found that HSPC159 enhanced breast cancer cells proliferation and metastasis in vitro and in vivo. Mechanistically, HSPC159 was found to induce epithelial-mesenchymal transition (EMT) and F-actin polymerization process of breast cancer cells. Moreover, HSPC159 promoted proliferation, migration and invasion through activating PI3K/Akt signaling pathway in breast cancer. In conclusion, our findings demonstrated that HSPC159 contributed to breast cancer progression via PI3K/Akt pathway and might serve as a potential therapeutic target for the treatment of breast cancer. This article is protected by copyright. All rights reserved. This article is protected by copyright. All rights reserved.

  15. 40 CFR 159.179 - Metabolites, degradates, contaminants, and impurities.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... chemical properties of the metabolite or degradate. (B) Data regarding structurally analogous chemicals. (C) Data regarding chemical reactivity of the metabolite or degradate and structurally analogous substances... any person described in § 159.158(a) that the metabolite or degradate, or analogous chemicals, may...

  16. 40 CFR 159.179 - Metabolites, degradates, contaminants, and impurities.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... chemical properties of the metabolite or degradate. (B) Data regarding structurally analogous chemicals. (C) Data regarding chemical reactivity of the metabolite or degradate and structurally analogous substances... any person described in § 159.158(a) that the metabolite or degradate, or analogous chemicals, may...

  17. 33 CFR 159.111 - Pressure and vacuum pulse test.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Pressure and vacuum pulse test... (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.111 Pressure and vacuum pulse test. Liquid retention components of the device with manufacturer specified venting...

  18. 33 CFR 159.111 - Pressure and vacuum pulse test.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 33 Navigation and Navigable Waters 2 2012-07-01 2012-07-01 false Pressure and vacuum pulse test... (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.111 Pressure and vacuum pulse test. Liquid retention components of the device with manufacturer specified venting...

  19. 33 CFR 159.111 - Pressure and vacuum pulse test.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 33 Navigation and Navigable Waters 2 2014-07-01 2014-07-01 false Pressure and vacuum pulse test... (CONTINUED) POLLUTION MARINE SANITATION DEVICES Design, Construction, and Testing § 159.111 Pressure and vacuum pulse test. Liquid retention components of the device with manufacturer specified venting...

  20. Publications - MP 159 | Alaska Division of Geological & Geophysical Surveys

    Science.gov Websites

    Geologic Data Index (AGDI) Volcanology Alaska Volcano Observatory (AVO) Mineral Resources Alaska's Mineral MAPTEACH Tsunami Inundation Mapping Energy Resources Gas Hydrates STATEMAP Program information Geologic Facebook DGGS News Natural Resources Geological & Geophysical Surveys Publications MP 159 main content

  1. Tribo-electrochemical characterization of hafnium multilayer systems deposited on nitride/vanadium nitride AISI 4140 steel

    NASA Astrophysics Data System (ADS)

    Mora, M.; Vera, E.; Aperador, W.

    2016-02-01

    In this work is presented the synergistic behaviour among corrosion/wear (tribocorrosion) of the multilayer coatings hafnium nitride/vanadium nitride [HfN/VN]n. The multilayers were deposited on AISI 4140 steel using the technique of physical vapor deposition PVD magnetron sputtering, the tests were performed using a pin-on-disk tribometer, which has an adapted potentiostat galvanostat with three-electrode electrochemical cell. Tribocorrosive parameters such as: Friction coefficient between the coating and the counter body (100 Cr6 steel ball); Polarization resistance by means of electrochemical impedance spectroscopy technique and corrosion rate by polarization curves were determined. It was observed an increase in the polarization resistance, a decrease in the corrosion rate and a low coefficient of friction in comparison with the substrate, due to an increase on the number of bilayers.

  2. Synthesis of High Symmetry Phase of Hafnium Dioxide Thin Films and Nickel Ferrite's Effect on Microstructure in Composite Heterostructure

    NASA Astrophysics Data System (ADS)

    Straka, Weston J.

    Hafnium dioxide has attracted a great deal of attention recently due to its potential use in two different electronic applications: CMOS and FeRAM. In CMOS, the usefulness of hafnia comes in due to its high dielectric constant and compatibility with current IC processing parameters. For FeRAM, hafnia's recent discovery to exhibit ferroelectricity in an orthorhombic phase makes this material attractive for replacement of the ferroelectric material in FeRAM. This study shows the feasibility of depositing thin films of hafnium oxide via chemical solution deposition for integration into these devices. The processing parameters necessary to produce this phase show how non-equilibrium processing plays a role in its synthesis. The temperature necessary to achieve the high symmetry phase was at 725 °C for 3 minutes on sapphire, silicon, and coated silicon substrates. The thermal conductivity of each was viewed as the property that allowed the hafnia formation. The dielectric constant of the hafnia films were between 30 and 32 with low dissipation factors and up to 47 with a poor dissipation factor all at 1 kHz. The formation of this phase was shown to be thickness independent with the high symmetry phase existing up to 300 nm film thickness. Interfacing the hafnia film with nickel ferrite was also studied to identify the possibility of using this composite for non-destructive reading of FeRAM. The magnetic properties showed an unchanged nickel ferrite film but the interface between the two was poor leading to the conclusion that more work must be done to successfully integrate these two films.

  3. 40 CFR 159.170 - Human epidemiological and exposure studies.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 25 2012-07-01 2012-07-01 false Human epidemiological and exposure... Information § 159.170 Human epidemiological and exposure studies. Information must be submitted which concerns... that a correlation may exist between exposure to a pesticide and observed adverse effects in humans...

  4. 40 CFR 159.170 - Human epidemiological and exposure studies.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 24 2014-07-01 2014-07-01 false Human epidemiological and exposure... Information § 159.170 Human epidemiological and exposure studies. Information must be submitted which concerns... that a correlation may exist between exposure to a pesticide and observed adverse effects in humans...

  5. 40 CFR 159.170 - Human epidemiological and exposure studies.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 25 2013-07-01 2013-07-01 false Human epidemiological and exposure... Information § 159.170 Human epidemiological and exposure studies. Information must be submitted which concerns... that a correlation may exist between exposure to a pesticide and observed adverse effects in humans...

  6. 40 CFR 159.170 - Human epidemiological and exposure studies.

    Code of Federal Regulations, 2011 CFR

    2011-07-01

    ... 40 Protection of Environment 24 2011-07-01 2011-07-01 false Human epidemiological and exposure... Information § 159.170 Human epidemiological and exposure studies. Information must be submitted which concerns... that a correlation may exist between exposure to a pesticide and observed adverse effects in humans...

  7. Hafnium Films and Magnetic Shielding for TIME, A mm-Wavelength Spectrometer Array

    NASA Astrophysics Data System (ADS)

    Hunacek, J.; Bock, J.; Bradford, C. M.; Butler, V.; Chang, T.-C.; Cheng, Y.-T.; Cooray, A.; Crites, A.; Frez, C.; Hailey-Dunsheath, S.; Hoscheit, B.; Kim, D. W.; Li, C.-T.; Marrone, D.; Moncelsi, L.; Shirokoff, E.; Steinbach, B.; Sun, G.; Trumper, I.; Turner, A.; Uzgil, B.; Weber, A.; Zemcov, M.

    2018-04-01

    TIME is a mm-wavelength grating spectrometer array that will map fluctuations of the 157.7-μm emission line of singly ionized carbon ([CII]) during the epoch of reionization (redshift z ˜ 5-9). Sixty transition-edge sensor (TES) bolometers populate the output arc of each of the 32 spectrometers, for a total of 1920 detectors. Each bolometer consists of gold absorber on a ˜ 3 × 3 mm silicon nitride micro-mesh suspended near the corners by 1 × 1 × 500 μm silicon nitride legs targeting a photon-noise-dominated NEP ˜ 1 × 10^{-17} W/√{Hz} . Hafnium films are explored as a lower-T_c alternative to Ti (500 mK) for TIME TESs, allowing thicker support legs for improved yield. Hf T_c is shown to vary between 250 and 450 mK when varying the resident Ar pressure during deposition. Magnetic shielding designs and simulations are presented for the TIME first-stage SQUIDs. Total axial field suppression is predicted to be 5 × 10^7.

  8. 19 CFR 159.44 - Special duties on merchandise imported under agreements in restraint of trade.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... September 8, 1916 (15 U.S.C. 73), the port director shall report the matter to the Commissioner of Customs... 19 Customs Duties 2 2014-04-01 2014-04-01 false Special duties on merchandise imported under agreements in restraint of trade. 159.44 Section 159.44 Customs Duties U.S. CUSTOMS AND BORDER PROTECTION...

  9. Tracing the history of submarine hydrothermal inputs and the significance of hydrothermal hafnium for the seawater budget - A combined Pb-Hf-Nd isotope approach

    USGS Publications Warehouse

    van de Flierdt, T.; Frank, M.; Halliday, A.N.; Hein, J.R.; Hattendorf, B.; Gunther, D.; Kubik, P.W.

    2004-01-01

    Secular variations in the Pb isotopic composition of a mixed hydrogenous-hydrothermal ferromanganese crust from the Bauer Basin in the eastern Equatorial Pacific provide clear evidence for changes in hydrothermal contributions during the past 7 Myr. The nearby Galapagos Rise spreading center provided a strong hydrothermal flux prior to 6.5 Ma. After 6.5 Ma, the Pb became stepwise more radiogenic and more similar to Equatorial Pacific seawater, reflecting the westward shift of spreading to the presently active East Pacific Rise (EPR). A second, previously unrecognized enhanced hydrothermal period occurred between 4.4 and 2.9 Ma, which reflects either off-axis hydrothermal activity in the Bauer Basin or a late-stage pulse of hydrothermal Pb from the then active, but waning Galapagos Rise spreading center. Hafnium isotope time-series of the same mixed hydrogenous-hydrothermal crust show invariant values over the past 7 Myr. Hafnium isotope ratios, as well as Nd isotope ratios obtained for this crust, are identical to that of hydrogenous Equatorial Pacific deep water crusts and clearly indicate that hydrothermal Hf, similar to Nd, does not travel far from submarine vents. Therefore, we suggest that hydrothermal Hf fluxes do not contribute significantly to the global marine Hf budget. ?? 2004 Elsevier B.V. All rights reserved.

  10. 14 CFR 61.159 - Aeronautical experience: Airplane category rating.

    Code of Federal Regulations, 2010 CFR

    2010-01-01

    ... 14 Aeronautics and Space 2 2010-01-01 2010-01-01 false Aeronautical experience: Airplane category... Transport Pilots § 61.159 Aeronautical experience: Airplane category rating. (a) Except as provided in... certificate with an airplane category and class rating must have at least 1,500 hours of total time as a pilot...

  11. 14 CFR 61.159 - Aeronautical experience: Airplane category rating.

    Code of Federal Regulations, 2011 CFR

    2011-01-01

    ... 14 Aeronautics and Space 2 2011-01-01 2011-01-01 false Aeronautical experience: Airplane category... Transport Pilots § 61.159 Aeronautical experience: Airplane category rating. (a) Except as provided in... certificate with an airplane category and class rating must have at least 1,500 hours of total time as a pilot...

  12. 14 CFR 61.159 - Aeronautical experience: Airplane category rating.

    Code of Federal Regulations, 2014 CFR

    2014-01-01

    ... 14 Aeronautics and Space 2 2014-01-01 2014-01-01 false Aeronautical experience: Airplane category... Transport Pilots § 61.159 Aeronautical experience: Airplane category rating. (a) Except as provided in... certificate with an airplane category and class rating must have at least 1,500 hours of total time as a pilot...

  13. 14 CFR 61.159 - Aeronautical experience: Airplane category rating.

    Code of Federal Regulations, 2013 CFR

    2013-01-01

    ... 14 Aeronautics and Space 2 2013-01-01 2013-01-01 false Aeronautical experience: Airplane category... Transport Pilots § 61.159 Aeronautical experience: Airplane category rating. (a) Except as provided in... certificate with an airplane category and class rating must have at least 1,500 hours of total time as a pilot...

  14. 14 CFR 61.159 - Aeronautical experience: Airplane category rating.

    Code of Federal Regulations, 2012 CFR

    2012-01-01

    ... 14 Aeronautics and Space 2 2012-01-01 2012-01-01 false Aeronautical experience: Airplane category... Transport Pilots § 61.159 Aeronautical experience: Airplane category rating. (a) Except as provided in... certificate with an airplane category and class rating must have at least 1,500 hours of total time as a pilot...

  15. 46 CFR 159.007-7 - Application for acceptance for production inspections and tests: Coast Guard action.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 6 2011-10-01 2011-10-01 false Application for acceptance for production inspections and tests: Coast Guard action. 159.007-7 Section 159.007-7 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) EQUIPMENT, CONSTRUCTION, AND MATERIALS: SPECIFICATIONS AND APPROVAL APPROVAL OF EQUIPMENT AND MATERIALS Production Inspection...

  16. 46 CFR 159.010-15 - Contracting inspections and tests or transferrals to another laboratory or person.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 6 2011-10-01 2011-10-01 false Contracting inspections and tests or transferrals to another laboratory or person. 159.010-15 Section 159.010-15 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) EQUIPMENT, CONSTRUCTION, AND MATERIALS: SPECIFICATIONS AND APPROVAL APPROVAL OF EQUIPMENT AND MATERIALS Independent Laboratory...

  17. 46 CFR 159.007-7 - Application for acceptance for production inspections and tests: Coast Guard action.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 6 2010-10-01 2010-10-01 false Application for acceptance for production inspections and tests: Coast Guard action. 159.007-7 Section 159.007-7 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) EQUIPMENT, CONSTRUCTION, AND MATERIALS: SPECIFICATIONS AND APPROVAL APPROVAL OF EQUIPMENT AND MATERIALS Production Inspection...

  18. 46 CFR 159.010-15 - Contracting inspections and tests or transferrals to another laboratory or person.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 46 Shipping 6 2010-10-01 2010-10-01 false Contracting inspections and tests or transferrals to another laboratory or person. 159.010-15 Section 159.010-15 Shipping COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) EQUIPMENT, CONSTRUCTION, AND MATERIALS: SPECIFICATIONS AND APPROVAL APPROVAL OF EQUIPMENT AND MATERIALS Independent Laboratory...

  19. Low-voltage high-performance organic thin film transistors with a thermally annealed polystyrene/hafnium oxide dielectric

    NASA Astrophysics Data System (ADS)

    Wang, Ying; Acton, Orb; Ting, Guy; Weidner, Tobias; Ma, Hong; Castner, David G.; Jen, Alex K.-Y.

    2009-12-01

    Low-voltage pentacene-based organic thin film transistors (OTFTs) are demonstrated with polystyrene (PS)/hafnium oxide (HfOx) hybrid dielectrics. Thermal annealing of PS films on HfOx at 120 °C (PS-120) induces a flatter orientation of the phenyl groups (tilt angle 65°) at the surface compared to PS films without annealing (PS-RT) (tilt angle 31°). The flatter phenyl group orientation leads to better matching of surface energy between pentacene and PS. Pentacene deposited on PS-120 display higher quality thin films with larger grain sizes and higher crystallinity. Pentacene OTFTs with PS-120/HfOx hybrid dielectrics can operate at low-voltage (<3 V) with high field-effect mobilities (1 cm2/V s), high on/off current ratios (106), and low subthreshold slopes (100 mV/dec).

  20. Passivation of InP heterojunction bipolar transistors by strain controlled plasma assisted electron beam evaporated hafnium oxide

    NASA Astrophysics Data System (ADS)

    Driad, R.; Sah, R. E.; Schmidt, R.; Kirste, L.

    2012-01-01

    We present structural, stress, and electrical properties of plasma assisted e-beam evaporated hafnium dioxide (HfO2) layers on n-type InP substrates. These layers have subsequently been used for surface passivation of InGaAs/InP heterostructure bipolar transistors either alone or in combination with plasma enhanced chemical vapor deposited SiO2 layers. The use of stacked HfO2/SiO2 results in better interface quality with InGaAs/InP heterostructures, as illustrated by smaller leakage current and improved breakdown voltage. These improvements can be attributed to the reduced defect density and charge trapping at the dielectric-semiconductor interface. The deposition at room temperature makes these films suitable for sensitive devices.

  1. 42 CFR 84.159 - Man tests for gases and vapors; supplied-air respirators; general performance requirements.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 42 Public Health 1 2010-10-01 2010-10-01 false Man tests for gases and vapors; supplied-air respirators; general performance requirements. 84.159 Section 84.159 Public Health PUBLIC HEALTH SERVICE, DEPARTMENT OF HEALTH AND HUMAN SERVICES OCCUPATIONAL SAFETY AND HEALTH RESEARCH AND RELATED ACTIVITIES APPROVAL OF RESPIRATORY PROTECTIVE DEVICES...

  2. 42 CFR 417.159 - Relationship of section 1310 of the Public Health Service Act to the National Labor Relations Act...

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... 42 Public Health 3 2010-10-01 2010-10-01 false Relationship of section 1310 of the Public Health Service Act to the National Labor Relations Act and the Railway Labor Act. 417.159 Section 417.159 Public....159 Relationship of section 1310 of the Public Health Service Act to the National Labor Relations Act...

  3. 42 CFR 417.159 - Relationship of section 1310 of the Public Health Service Act to the National Labor Relations Act...

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 42 Public Health 3 2011-10-01 2011-10-01 false Relationship of section 1310 of the Public Health Service Act to the National Labor Relations Act and the Railway Labor Act. 417.159 Section 417.159 Public....159 Relationship of section 1310 of the Public Health Service Act to the National Labor Relations Act...

  4. 159. Credit PG&E. Using mules and horses to transport generator ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    159. Credit PG&E. Using mules and horses to transport generator base plate from Anderson, CA, to Northern California's Kilarc powerhouse, c. 1903. - Battle Creek Hydroelectric System, Battle Creek & Tributaries, Red Bluff, Tehama County, CA

  5. Structure of a Yeast Dyn2-Nup159 Complex and Molecular Basis for Dynein Light Chain-Nuclear Pore Interaction*

    PubMed Central

    Romes, Erin M.; Tripathy, Ashutosh; Slep, Kevin C.

    2012-01-01

    The nuclear pore complex gates nucleocytoplasmic transport through a massive, eight-fold symmetric channel capped by a nucleoplasmic basket and structurally unique, cytoplasmic fibrils whose tentacles bind and regulate asymmetric traffic. The conserved Nup82 complex, composed of Nsp1, Nup82, and Nup159, forms the unique cytoplasmic fibrils that regulate mRNA nuclear export. Although the nuclear pore complex plays a fundamental, conserved role in nuclear trafficking, structural information about the cytoplasmic fibrils is limited. Here, we investigate the structural and biochemical interactions between Saccharomyces cerevisiae Nup159 and the nucleoporin, Dyn2. We find that Dyn2 is predominantly a homodimer and binds arrayed sites on Nup159, promoting the Nup159 parallel homodimerization. We present the first structure of Dyn2, determined at 1.85 Å resolution, complexed with a Nup159 target peptide. Dyn2 resembles homologous metazoan dynein light chains, forming homodimeric composite substrate binding sites that engage two independent 10-residue target motifs, imparting a β-strand structure to each peptide via antiparallel extension of the Dyn2 core β-sandwich. Dyn2 recognizes a highly conserved QT motif while allowing sequence plasticity in the flanking residues of the peptide. Isothermal titration calorimetric analysis of the comparative binding of Dyn2 to two Nup159 target sites shows similar affinities (18 and 13 μm), but divergent thermal binding modes. Dyn2 homodimers are arrayed in the crystal lattice, likely mimicking the arrayed architecture of Dyn2 on the Nup159 multivalent binding sites. Crystallographic interdimer interactions potentially reflect a cooperative basis for Dyn2-Nup159 complex formation. Our data highlight the determinants that mediate oligomerization of the Nup82 complex and promote a directed, elongated cytoplasmic fibril architecture. PMID:22411995

  6. 42 CFR 417.159 - Relationship of section 1310 of the Public Health Service Act to the National Labor Relations Act...

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... 42 Public Health 3 2014-10-01 2014-10-01 false Relationship of section 1310 of the Public Health Service Act to the National Labor Relations Act and the Railway Labor Act. 417.159 Section 417.159 Public... § 417.159 Relationship of section 1310 of the Public Health Service Act to the National Labor Relations...

  7. 42 CFR 417.159 - Relationship of section 1310 of the Public Health Service Act to the National Labor Relations Act...

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... 42 Public Health 3 2012-10-01 2012-10-01 false Relationship of section 1310 of the Public Health Service Act to the National Labor Relations Act and the Railway Labor Act. 417.159 Section 417.159 Public... § 417.159 Relationship of section 1310 of the Public Health Service Act to the National Labor Relations...

  8. 42 CFR 417.159 - Relationship of section 1310 of the Public Health Service Act to the National Labor Relations Act...

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... 42 Public Health 3 2013-10-01 2013-10-01 false Relationship of section 1310 of the Public Health Service Act to the National Labor Relations Act and the Railway Labor Act. 417.159 Section 417.159 Public... § 417.159 Relationship of section 1310 of the Public Health Service Act to the National Labor Relations...

  9. Cesium hafnium chloride: A high light yield, non-hygroscopic cubic crystal scintillator for gamma spectroscopy

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Burger, Arnold, E-mail: aburger@fisk.edu; Department of Physics and Astronomy, Vanderbilt University, Nashville, Tennessee 37235; Rowe, Emmanuel

    We report on the scintillation properties of Cs{sub 2}HfCl{sub 6} (cesium hafnium chloride or CHC) as an example of a little-known class of non-hygroscopic compounds having the generic cubic crystal structure of K{sub 2}PtCl{sub 6}. The crystals are easily growable from the melt using the Bridgman method with minimal precursor treatments or purification. CHC scintillation is centered at 400 nm, with a principal decay time of 4.37 μs and a light yield of up to 54 000 photons/MeV when measured using a silicon CCD photodetector. The light yield is the highest ever reported for an undoped crystal, and CHC also exhibits excellent lightmore » yield nonproportionality. These desirable properties allowed us to build and test CHC gamma-ray spectrometers providing energy resolution of 3.3% at 662 keV.« less

  10. Spatio-temporal expression of miRNA159 family members and their GAMYB target gene during the modulation of gibberellin-induced grapevine parthenocarpy.

    PubMed

    Wang, Chen; Jogaiah, Sudisha; Zhang, WenYing; Abdelrahman, Mostafa; Fang, Jing Gui

    2018-06-27

    Grapevine, Vitis vinifera, is an important economic fruit crop that is highly sensitive to gibberellin (GA), and the exogenous application of GA can efficiently induce grapevine parthenocarpy. However, the molecular mechanisms underlying this process remain elusive. In this study, morphological changes during flower development in response to GA treatments were examined in the 'Zuijinxiang' cultivar. To obtain insights into the roles of miRNA159s in GA-induced grapevine parthenocarpy, VvmiR159a, VvmiR159b, VvmiR159c, and their target gene VvGAMYB were isolated, sequenced and characterized. Spatial-temporal expression analyses showed that VvmiR159c exhibited the highest expression levels at 4 d before flowering, followed by a gradual decrease, while VvGAMYB displayed an opposite pattern of expression with the lowest expression at the corresponding stage in response to GA treatment. A cleavage interaction between VvmiR159s and VvGAMYB and variations of their cleavage roles were confirmed in grapevine floral development. In addition, the potential roles of VvmiR159s in GA signaling were investigated through DELLA-protein repressors, indicating that GA-DELLA (SLR1)-VvmiR159c-VvGAMYB is the key signaling regulatory module in grapevine. Our findings provide novel insights into the GA-responsive roles of VvmiR159s in modulating grapevine floral development, which have important implications for the molecular breeding of high-quality seedless grapevine berry.

  11. 159. Photocopy of written record (taken from Twin Falls Canal ...

    Library of Congress Historic Buildings Survey, Historic Engineering Record, Historic Landscapes Survey

    159. Photocopy of written record (taken from Twin Falls Canal Company Low Line Book #1, pp. 76,77). RECORD OF BORROW AT LOW LINE SIPHON. - Milner Dam & Main Canal: Twin Falls Canal Company, On Snake River, 11 miles West of city of Burley, Idaho, Twin Falls, Twin Falls County, ID

  12. 24 CFR 17.159 - Application of offset funds: Federal payment is insufficient to cover amount of debt.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ...: Federal payment is insufficient to cover amount of debt. 17.159 Section 17.159 Housing and Urban... Procedures for the Collection of Claims by the Government Irs Tax Refund and Federal Payment Offset... insufficient to cover amount of debt. If an offset of a Federal payment is insufficient to satisfy a debt, the...

  13. Isolation of tungsten and tantalum isotopes without supports from. cap alpha. -particle-irradiated hafnium targets

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Gasita, S.M.; Iota, B.Z.; Malachkov, A.G.

    1985-11-01

    An extraction procedure has been developed for successive isolation of tungsten (/sup 178/W and /sup 181/W) and tantalum (/sup 179/Ta and /sup 182/Ta) isotopes without supports from ..cap alpha..particle-irradiated hafnium targets. The target, irradiated on a cyclotron, is dissolved in hydrofluoric acid. Tantalum isotopes are extracted with tributyl phosphate (TBP) from 1-5 M HF and are then reextracted with a 1:1 ammonia solution, and hydrofluoric acid is removed by heating. Tungsten isotopes are extracted with a chloroform solution or N-benzoyl-N-phenylhydroxylamine (BPHA) from 11-12 M H/sub 2/SO/sub 4/ or ..cap alpha..-benzoin oxime from 4.5-5.5 M H/sub 2/SO/sub 4/ and are thenmore » reextracted with a l:l ammonia solution. The yield of tungsten isotopes is not less than 95%, and the content of radioactive impurities of other isotopes is not more than 0.1%.« less

  14. Metallorganic chemical vapor deposition and atomic layer deposition approaches for the growth of hafnium-based thin films from dialkylamide precursors for advanced CMOS gate stack applications

    NASA Astrophysics Data System (ADS)

    Consiglio, Steven P.

    To continue the rapid progress of the semiconductor industry as described by Moore's Law, the feasibility of new material systems for front end of the line (FEOL) process technologies needs to be investigated, since the currently employed polysilicon/SiO2-based transistor system is reaching its fundamental scaling limits. Revolutionary breakthroughs in complementary-metal-oxide-semiconductor (CMOS) technology were recently announced by Intel Corporation and International Business Machines Corporation (IBM), with both organizations revealing significant progress in the implementation of hafnium-based high-k dielectrics along with metal gates. This announcement was heralded by Gordon Moore as "...the biggest change in transistor technology since the introduction of polysilicon gate MOS transistors in the late 1960s." Accordingly, the study described herein focuses on the growth of Hf-based dielectrics and Hf-based metal gates using chemical vapor-based deposition methods, specifically metallorganic chemical vapor deposition (MOCVD) and atomic layer deposition (ALD). A family of Hf source complexes that has received much attention recently due to their desirable properties for implementation in wafer scale manufacturing is the Hf dialkylamide precursors. These precursors are room temperature liquids and possess sufficient volatility and desirable decomposition characteristics for both MOCVD and ALD processing. Another benefit of using these sources is the existence of chemically compatible Si dialkylamide sources as co-precursors for use in Hf silicate growth. The first part of this study investigates properties of MOCVD-deposited HfO2 and HfSixOy using dimethylamido Hf and Si precursor sources using a customized MOCVD reactor. The second part of this study involves a study of wet and dry surface pre-treatments for ALD growth of HfO2 using tetrakis(ethylmethylamido)hafnium in a wafer scale manufacturing environment. The third part of this study is an investigation of

  15. Conduction Channel Formation and Dissolution Due to Oxygen Thermophoresis/Diffusion in Hafnium Oxide Memristors

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Kumar, Suhas; Wang, Ziwen; Huang, Xiaopeng

    Due to the favorable operating power, endurance, speed, and density., transition-metal-oxide memristors, or resistive random-access memory (RRAM) switches, are under intense development for storage-class memory. Their commercial deployment critically depends on predictive compact models based on understanding nanoscale physiocochemical forces, which remains elusive and controversial owing to the difficulties in directly observing atomic motions during resistive switching, Here, using scanning transmission synchrotron X-ray spectromicroscopy to study in situ switching of hafnium oxide memristors, we directly observed the formation of a localized oxygen-deficiency-derived conductive channel surrounded by a low-conductivity ring of excess oxygen. Subsequent thermal annealing homogenized the segregated oxygen, resettingmore » the cells toward their as-grown resistance state. We show that the formation and dissolution of the conduction channel are successfully modeled by radial thermophoresis and Fick diffusion of oxygen atoms driven by Joule heating. This confirmation and quantification of two opposing nanoscale radial forces that affect bipolar memristor switching are important components for any future physics-based compact model for the electronic switching of these devices.« less

  16. 19 CFR 159.5 - Cigars, cigarettes, and cigarette papers and tubes.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... 19 Customs Duties 2 2013-04-01 2013-04-01 false Cigars, cigarettes, and cigarette papers and tubes...; DEPARTMENT OF THE TREASURY (CONTINUED) LIQUIDATION OF DUTIES General Provisions § 159.5 Cigars, cigarettes, and cigarette papers and tubes. The internal revenue taxes imposed on cigars, cigarettes, and...

  17. 19 CFR 159.5 - Cigars, cigarettes, and cigarette papers and tubes.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... 19 Customs Duties 2 2014-04-01 2014-04-01 false Cigars, cigarettes, and cigarette papers and tubes...; DEPARTMENT OF THE TREASURY (CONTINUED) LIQUIDATION OF DUTIES General Provisions § 159.5 Cigars, cigarettes, and cigarette papers and tubes. The internal revenue taxes imposed on cigars, cigarettes, and...

  18. 19 CFR 159.5 - Cigars, cigarettes, and cigarette papers and tubes.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... 19 Customs Duties 2 2011-04-01 2011-04-01 false Cigars, cigarettes, and cigarette papers and tubes...; DEPARTMENT OF THE TREASURY (CONTINUED) LIQUIDATION OF DUTIES General Provisions § 159.5 Cigars, cigarettes, and cigarette papers and tubes. The internal revenue taxes imposed on cigars, cigarettes, and...

  19. 19 CFR 159.5 - Cigars, cigarettes, and cigarette papers and tubes.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... 19 Customs Duties 2 2012-04-01 2012-04-01 false Cigars, cigarettes, and cigarette papers and tubes...; DEPARTMENT OF THE TREASURY (CONTINUED) LIQUIDATION OF DUTIES General Provisions § 159.5 Cigars, cigarettes, and cigarette papers and tubes. The internal revenue taxes imposed on cigars, cigarettes, and...

  20. 19 CFR 159.5 - Cigars, cigarettes, and cigarette papers and tubes.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... 19 Customs Duties 2 2010-04-01 2010-04-01 false Cigars, cigarettes, and cigarette papers and tubes...; DEPARTMENT OF THE TREASURY (CONTINUED) LIQUIDATION OF DUTIES General Provisions § 159.5 Cigars, cigarettes, and cigarette papers and tubes. The internal revenue taxes imposed on cigars, cigarettes, and...

  1. Why 159°?: a story about the dropping of the Hiroshima atom bomb

    NASA Astrophysics Data System (ADS)

    Prunty, Sean L.

    2015-04-01

    This paper presents an analysis of the evasive manoeuvre undertaken by the pilot of the Enola Gay aircraft following the dropping of the first uranium bomb. The pilot was instructed to make a 159° turn following the bomb’s release in order to acquire the greatest distance from the point at which the bomb explodes. Accordingly, the objective here is to investigate why the angle should be exactly 159°. The optimum flight-path to maximize the distance from the detonation point is analysed by considering the escape or exit angle taken by the aircraft following a turning-manoeuvre that points it directly away from the detonation site. A range of escape angles are predicted based on the requirement to exit the turning radius prior to detonation. By using information that appeared in a historical account of the event regarding the manoeuvre undertaken by the pilot following the release of the bomb, an estimate is made of the escape angle. Despite the fact that the result shows reasonable agreement with the value of 159°, some uncertainty is expressed as to the close coincidence obtained. In addition, the location of the aircraft and the time of arrival of the shock wave following detonation are also briefly discussed.

  2. Highly effective electronic passivation of silicon surfaces by atomic layer deposited hafnium oxide

    NASA Astrophysics Data System (ADS)

    Cui, Jie; Wan, Yimao; Cui, Yanfeng; Chen, Yifeng; Verlinden, Pierre; Cuevas, Andres

    2017-01-01

    This paper investigates the application of hafnium oxide (HfO2) thin films to crystalline silicon (c-Si) solar cells. Excellent passivation of both n- and p-type crystalline silicon surfaces has been achieved by the application of thin HfO2 films prepared by atomic layer deposition. Effective surface recombination velocities as low as 3.3 and 9.9 cm s-1 have been recorded with 15 nm thick films on n- and p-type 1 Ω cm c-Si, respectively. The surface passivation by HfO2 is activated at 350 °C by a forming gas anneal. Capacitance voltage measurement shows an interface state density of 3.6 × 1010 cm-2 eV-1 and a positive charge density of 5 × 1011 cm-2 on annealed p-type 1 Ω cm c-Si. X-ray diffraction unveils a positive correlation between surface recombination and crystallinity of the HfO2 and a dependence of the crystallinity on both annealing temperature and film thickness. In summary, HfO2 is demonstrated to be an excellent candidate for surface passivation of crystalline silicon solar cells.

  3. A COMPARISON OF EXPERIMENTS AND THREE-DIMENSIONAL ANALYSIS TECHNIQUES. PART I. UNPOISONED UNIFORM SLAB CORE WITH A PARTIALLY INSERTED HAFNIUM ROD

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Renzi, N.E.; Roseberry, R.J.

    >The experimental measurements and nuclear analysis of a uniformly loaded, unpoisoned slab core with a partially insented hafnium rod are described. Comparisons of experimental data with calculated results of the UFO code and flux synthesis techniques are given. It was concluded that one of the flux synthesis techniques and the UFO code are able to predict flux distributions to within approximately 5% of experiment for most cases. An error of approximately 10% was found in the synthesis technique for a channel near the partially inserted rod. The various calculations were able to predict neutron pulsed shutdowns to only approximately 30%.more » (auth)« less

  4. High-energy X-ray detection by hafnium-doped organic-inorganic hybrid scintillators prepared by sol-gel method

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Sun, Yan; Koshimizu, Masanori, E-mail: koshi@qpc.che.tohoku.ac.jp; Yahaba, Natsuna

    2014-04-28

    With the aim of enhancing the efficiency with which plastic scintillators detect high-energy X-rays, hafnium-doped organic-inorganic hybrid scintillators were fabricated via a sol-gel method. Transmission electron microscopy of sampled material reveals the presence of Hf{sub x}Si{sub 1−x}O{sub 2} nanoparticles, dispersed in a polymer matrix that constitutes the active material of the X-ray detector. With Hf{sub x}Si{sub 1−x}O{sub 2} nanoparticles incorporated in the polymer matrix, the absorption edge and the luminescence wavelength is shifted, which we attribute to Mie scattering. The detection efficiency for 67.4-keV X-rays in a 0.6-mm-thick piece of this material is two times better than the same thicknessmore » of a commercial plastic scintillator-NE142.« less

  5. 76 FR 65211 - 159th Meeting of the Advisory Council on Employee Welfare and Pension Benefit Plans; Notice of...

    Federal Register 2010, 2011, 2012, 2013, 2014

    2011-10-20

    ... DEPARTMENT OF LABOR Employee Benefits Security Administration 159th Meeting of the Advisory Council on Employee Welfare and Pension Benefit Plans; Notice of Meeting Pursuant to the authority... 159th open meeting of the Advisory Council on Employee Welfare and Pension Benefit Plans (also known as...

  6. 27 CFR 25.159 - Time of tax determination and payment; offsets.

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... TAX AND TRADE BUREAU, DEPARTMENT OF THE TREASURY LIQUORS BEER Tax on Beer Determination of Tax § 25.159 Time of tax determination and payment; offsets. (a) Time and payment. The tax on beer will be... part. (b) Offsets. During any business day, the quantity of beer returned to the same brewery from...

  7. 27 CFR 25.159 - Time of tax determination and payment; offsets.

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... TAX AND TRADE BUREAU, DEPARTMENT OF THE TREASURY ALCOHOL BEER Tax on Beer Determination of Tax § 25.159 Time of tax determination and payment; offsets. (a) Time and payment. The tax on beer will be... part. (b) Offsets. During any business day, the quantity of beer returned to the same brewery from...

  8. 27 CFR 25.159 - Time of tax determination and payment; offsets.

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... TAX AND TRADE BUREAU, DEPARTMENT OF THE TREASURY LIQUORS BEER Tax on Beer Determination of Tax § 25.159 Time of tax determination and payment; offsets. (a) Time and payment. The tax on beer will be... part. (b) Offsets. During any business day, the quantity of beer returned to the same brewery from...

  9. 27 CFR 25.159 - Time of tax determination and payment; offsets.

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... TAX AND TRADE BUREAU, DEPARTMENT OF THE TREASURY ALCOHOL BEER Tax on Beer Determination of Tax § 25.159 Time of tax determination and payment; offsets. (a) Time and payment. The tax on beer will be... part. (b) Offsets. During any business day, the quantity of beer returned to the same brewery from...

  10. 27 CFR 25.159 - Time of tax determination and payment; offsets.

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... TAX AND TRADE BUREAU, DEPARTMENT OF THE TREASURY LIQUORS BEER Tax on Beer Determination of Tax § 25.159 Time of tax determination and payment; offsets. (a) Time and payment. The tax on beer will be... part. (b) Offsets. During any business day, the quantity of beer returned to the same brewery from...

  11. A single amino acid (Asp159) from the dog prion protein suppresses the toxicity of the mouse prion protein in Drosophila

    PubMed Central

    Sanchez-Garcia, J; Jensen, K; Zhang, Y; Rincon-Limas, DE; Fernandez-Funez, P

    2016-01-01

    Misfolding of the prion protein (PrP) is the key step in the transmission of spongiform pathologies in humans and several animals. Although PrP is highly conserved in mammals, a few changes in the sequence of endogenous PrP are proposed to confer protection to dogs, which were highly exposed to prion during the mad-cow epidemics. D159 is a unique amino acid found in PrP from dogs and other canines that was shown to alter surface charge, but its functional relevance has never been tested in vivo. Here, we show in transgenic Drosophila that introducing the N159D substitution on mouse PrP decreases its turnover. Additionally, mouse PrP-N159D demonstrates no toxicity and accumulates no pathogenic conformations, suggesting that a single D159 substitution is sufficient to prevent PrP conformational change and pathogenesis. Understanding the mechanisms mediating the protective activity of D159 is likely to lessen the burden of prion diseases in humans and domestic animals. PMID:27477054

  12. 3C 159 - a double emission-line radio galaxy

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Tytler, D.; Browne, I.

    1985-09-01

    An optical identification for 3C 159 is reported with a 19-mag emission-line radio galaxy at z = 0.482. Photometric measurements show it to be unusually bright and blue. The emission lines are of exceptionally high luminosity, and are split into two components separated by 598 + or - 13 km/s and 3 kpc along the spectrograph slit. A VLA may show that one of the radio lobes has two hot spots with tails of emission leading to both. 21 references.

  13. 33 CFR 159.126a - Suspended solids test: Type II devices.

    Code of Federal Regulations, 2010 CFR

    2010-07-01

    ... 33 Navigation and Navigable Waters 2 2010-07-01 2010-07-01 false Suspended solids test: Type II... Suspended solids test: Type II devices. During the sewage processing test (§ 159.121) 40 effluent samples... suspended solids in accordance with 40 CFR part 136. The arithmetic mean of the total suspended solids in 38...

  14. 45 CFR 159.120 - Data submission for the individual and small group markets.

    Code of Federal Regulations, 2012 CFR

    2012-10-01

    ... RELATING TO HEALTH CARE ACCESS HEALTH CARE REFORM INSURANCE WEB PORTAL § 159.120 Data submission for the... reopened for enrollment within 30 days of opening for enrollment. (e) Issuers must annually verify the data...

  15. 45 CFR 159.120 - Data submission for the individual and small group markets.

    Code of Federal Regulations, 2013 CFR

    2013-10-01

    ... RELATING TO HEALTH CARE ACCESS HEALTH CARE REFORM INSURANCE WEB PORTAL § 159.120 Data submission for the... reopened for enrollment within 30 days of opening for enrollment. (e) Issuers must annually verify the data...

  16. 45 CFR 159.120 - Data submission for the individual and small group markets.

    Code of Federal Regulations, 2014 CFR

    2014-10-01

    ... RELATING TO HEALTH CARE ACCESS HEALTH CARE REFORM INSURANCE WEB PORTAL § 159.120 Data submission for the... reopened for enrollment within 30 days of opening for enrollment. (e) Issuers must annually verify the data...

  17. Measurement and Simulation of Thermal Conductivity of Hafnium-Aluminum Thermal Neutron Absorber Material

    DOE PAGES

    Guillen, Donna Post; Harris, William H.

    2016-05-11

    A metal matrix composite (MMC) material comprised of hafnium aluminide (Al3Hf) intermetallic particles in an aluminum matrix has been identified as a promising material for fast-flux irradiation testing applications. This material can filter thermal neutrons while simultaneously providing high rates of conductive cooling for experiment capsules. Our purpose is to investigate effects of Hf-Al material composition and neutron irradiation on thermophysical properties, which were measured before and after irradiation. When performing differential scanning calorimetry (DSC) on the irradiated specimens, a large exotherm corresponding to material annealment was observed. Thus, a test procedure was developed to perform DSC and laser flashmore » analysis (LFA) to obtain the specific heat and thermal diffusivity of pre- and post-annealment specimens. This paper presents the thermal properties for three states of the MMC material: (1) unirradiated, (2) as-irradiated, and (3) irradiated and annealed. Microstructure-property relationships were obtained for the thermal conductivity. These relationships are useful for designing components from this material to operate in irradiation environments. Furthermore, the ability of this material to effectively conduct heat as a function of temperature, volume fraction Al 3Hf, radiation damage and annealing is assessed using the MOOSE suite of computational tools.« less

  18. Ferroelectric transistors with monolayer molybdenum disulfide and ultra-thin aluminum-doped hafnium oxide

    NASA Astrophysics Data System (ADS)

    Yap, Wui Chung; Jiang, Hao; Liu, Jialun; Xia, Qiangfei; Zhu, Wenjuan

    2017-07-01

    In this letter, we demonstrate ferroelectric memory devices with monolayer molybdenum disulfide (MoS2) as the channel material and aluminum (Al)-doped hafnium oxide (HfO2) as the ferroelectric gate dielectric. Metal-ferroelectric-metal capacitors with 16 nm thick Al-doped HfO2 are fabricated, and a remnant polarization of 3 μC/cm2 under a program/erase voltage of 5 V is observed. The capability of potential 10 years data retention was estimated using extrapolation of the experimental data. Ferroelectric transistors based on embedded ferroelectric HfO2 and MoS2 grown by chemical vapor deposition are fabricated. Clockwise hysteresis is observed at low program/erase voltages due to slow bulk traps located near the 2D/dielectric interface, while counterclockwise hysteresis is observed at high program/erase voltages due to ferroelectric polarization. In addition, the endurances of the devices are tested, and the effects associated with ferroelectric materials, such as the wake-up effect and polarization fatigue, are observed. Reliable writing/reading in MoS2/Al-doped HfO2 ferroelectric transistors over 2 × 104 cycles is achieved. This research can potentially lead to advances of two-dimensional (2D) materials in low-power logic and memory applications.

  19. 49 CFR 1.59a - Redelegations by the Assistant Secretary for Administration.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... DELEGATION OF POWERS AND DUTIES Delegations § 1.59a Redelegations by the Assistant Secretary for...-delegate and authorize successive re-delegations. (b) The Assistant Secretary for Administration has... employees under the Federal Wage System, except as delegated to the Commandant of the Coast Guard at § 1.46...

  20. In Vitro Activity of DC-159a, a New Broad-Spectrum Fluoroquinolone, Compared with That of Other Agents against Drug-Susceptible and -Resistant Pneumococci▿

    PubMed Central

    Clark, Catherine; Smith, Kathy; Ednie, Lois; Bogdanovich, Tatiana; Dewasse, Bonifacio; McGhee, Pamela; Appelbaum, Peter C.

    2008-01-01

    DC-159a yielded MICs of ≤1 μg/ml against 316 strains of both quinolone-susceptible and -resistant pneumococci (resistance was defined as a levofloxacin MIC ≥4 μg/ml). Although the MICs for DC-159a against quinolone-susceptible pneumococci were a few dilutions higher than those of gemifloxacin, the MICs of these two compounds against 28 quinolone-resistant pneumococci were identical. The DC-159a MICs against quinolone-resistant strains did not appear to depend on the number or the type of mutations in the quinolone resistance-determining region. DC-159a, as well as the other quinolones tested, was bactericidal after 24 h at 2× MIC against 11 of 12 strains tested. Two of the strains were additionally tested at 1 and 2 h, and DC-159a at 4× MIC showed significant killing as early as 2 h. Multistep resistance selection studies showed that even after 50 consecutive subcultures of 10 strains in the presence of sub-MICs, DC-159a produced only two mutants with maximum MICs of 1 μg/ml. PMID:17938189

  1. The Yeast Eukaryotic Translation Initiation Factor 2B Translation Initiation Complex Interacts with the Fatty Acid Synthesis Enzyme YBR159W and Endoplasmic Reticulum Membranes

    PubMed Central

    Browne, Christopher M.; Samir, Parimal; Fites, J. Scott; Villarreal, Seth A.

    2013-01-01

    Using affinity purifications coupled with mass spectrometry and yeast two-hybrid assays, we show the Saccharomyces cerevisiae translation initiation factor complex eukaryotic translation initiation factor 2B (eIF2B) and the very-long-chain fatty acid (VLCFA) synthesis keto-reductase enzyme YBR159W physically interact. The data show that the interaction is specifically between YBR159W and eIF2B and not between other members of the translation initiation or VLCFA pathways. A ybr159wΔ null strain has a slow-growth phenotype and a reduced translation rate but a normal GCN4 response to amino acid starvation. Although YBR159W localizes to the endoplasmic reticulum membrane, subcellular fractionation experiments show that a fraction of eIF2B cofractionates with lipid membranes in a YBR159W-independent manner. We show that a ybr159wΔ yeast strain and other strains with null mutations in the VLCFA pathway cause eIF2B to appear as numerous foci throughout the cytoplasm. PMID:23263984

  2. Production, quality control, and bio-distribution studies of 159Gd-EDTMP as a palliative agent for bone pain

    PubMed Central

    Arani*, Simindokht Shirvani; Ghasemi, Somaye; Samani, Ali Bahrami; Zafarghandi, Mojtaba Shamsaei

    2015-01-01

    Introduction: Particle-emitting, bone-seeking radiopharmaceuticals have attracted the attention of the nuclear medicine community over the last three decades for the treatment of the pain of osteoblastic metastases. The objectives of this research were to produce quality-controlled 159Gd-EDTMP in order to provide a new therapeutic radiopharmaceutical for use in clinical applications. Methods: The investigation was an experimental study in which 159Gd (T1/2=18.479 h, Eβ (max)=970.60 keV, Eγ=363.55 (11.4%) keV] was produced by thermal neutron bombardment of natural Gd2O3 at the Tehran Research Reactor (TRR) for a period of 7 d at a flux of 3–4×1013 neutrons/cm2.s. It was then quality-controlled and used to radio-label the in-house prepared ethylene diamine tetra acetic acid (EDTM). Results: Complexation parameters were optimized to achieve maximum yields (>99%). The radiochemical purity of 159Gd-EDTMP was checked by radio thin layer chromatography RTLC. It was found to retain its stability at room temperature (>95%). Bio-distribution studies of the complexes conducted in wild rats showed significant bone uptake with rapid clearance from blood. Conclusion: The properties of the 159Gd-EDTMP that was produced suggest then use of a new, efficient, palliative therapeutic agent for metastatic bone pain instead of some other current radiopharmaceuticals. PMID:26052408

  3. The origin of 2.7 eV luminescence and 5.2 eV excitation band in hafnium oxide

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Perevalov, T. V., E-mail: timson@isp.nsc.ru; Novosibirsk State University, 2 Pirogova St., 630090 Novosibirsk; Aliev, V. Sh.

    2014-02-17

    The origin of a blue luminescence band at 2.7 eV and a luminescence excitation band at 5.2 eV of hafnia has been studied in stoichiometric and non-stoichiometric hafnium oxide films. Experimental and calculated results from the first principles valence band spectra showed that the stoichiometry violation leads to the formation of the peak density of states in the band gap caused by oxygen vacancies. Cathodoluminescence in the non-stoichiometric film exhibits a band at 2.65 eV that is excited at the energy of 5.2 eV. The optical absorption spectrum calculated for the cubic phase of HfO{sub 2} with oxygen vacancies showsmore » a peak at 5.3 eV. Thus, it could be concluded that the blue luminescence band at 2.7 eV and HfO{sub x} excitation peak at 5.2 eV are due to oxygen vacancies. The thermal trap energy in hafnia was estimated.« less

  4. IER-297 CED-2: Final Design for Thermal/Epithermal eXperiments with Jemima Plates with Polyethylene and Hafnium

    DOE Office of Scientific and Technical Information (OSTI.GOV)

    Nelson, A. J.; Percher, C. M.; Zywiec, W. J.

    This report presents the final design (CED-2) for IER-297, and focuses on 15 critical configurations using highly enriched uranium (HEU) Jemima plates moderated by polyethylene with and without hafnium diluent. The goal of the U.S. Nuclear Criticality Safety Program’s Thermal/Epithermal eXperiments (TEX) is to design and conduct new critical experiments to address high priority nuclear data needs from the nuclear criticality safety and nuclear data communities, with special emphasis on intermediate energy (0.625 eV – 100 keV) assemblies that can be easily modified to include various high priority diluent materials. The TEX (IER 184) CED-1 Report [1], completed in 2012,more » demonstrated the feasibility of meeting the TEX goals with two existing NCSP fissile assets, plutonium Zero Power Physics Reactor (ZPPR) plates and highly enriched uranium (HEU) Jemima plates. The first set of TEX experiments will focus on using the plutonium ZPPR plates with polyethylene moderator and tantalum diluents.« less

  5. 46 CFR 159.005-15 - Approval of equipment or material: Suspensions, withdrawals, and terminations.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... 46 Shipping 6 2011-10-01 2011-10-01 false Approval of equipment or material: Suspensions... SECURITY (CONTINUED) EQUIPMENT, CONSTRUCTION, AND MATERIALS: SPECIFICATIONS AND APPROVAL APPROVAL OF EQUIPMENT AND MATERIALS Approval Procedures § 159.005-15 Approval of equipment or material: Suspensions...

  6. Photoluminescence properties of Eu3+ doped HfO2 coatings formed by plasma electrolytic oxidation of hafnium

    NASA Astrophysics Data System (ADS)

    Stojadinović, Stevan; Tadić, Nenad; Ćirić, Aleksandar; Vasilić, Rastko

    2018-03-01

    Plasma electrolytic oxidation was used for synthesis of Eu3+ doped monoclinic HfO2 coatings on hafnium substrate. Results of photoluminescence (PL) measurements show the existence of two distinct regions: one that is related to the blue emission originating from oxygen vacancy defects in HfO2 and the other one characterized with a series of sharp orange-red emission peaks related to f-f transitions of Eu3+ from excited level 5D0 to lower levels 7FJ (J = 0, 1, 2, 3, and 4). PL peaks appearing in excitation spectra of obtained coatings are attributed either to charge transfer state of Eu3+ or to direct excitation of the Eu3+ ground state 7F0 into higher levels of the 4f-manifold. PL of formed coatings increases with PEO time due to an increase of oxygen vacancy defects and the content of Eu3+. Acquired experimental data suggest that hypersensitive electrical dipole transition is much more intense than the magnetic dipole transition, indicating that Eu3+ ions occupy a non-inversion symmetry sites.

  7. 45 CFR 159.120 - Data submission for the individual and small group markets.

    Code of Federal Regulations, 2011 CFR

    2011-10-01

    ... submit pricing and benefit data for portal plans associated with products that are newly open or newly... 45 Public Welfare 1 2011-10-01 2011-10-01 false Data submission for the individual and small group... RELATING TO HEALTH CARE ACCESS HEALTH CARE REFORM INSURANCE WEB PORTAL § 159.120 Data submission for the...

  8. 45 CFR 159.120 - Data submission for the individual and small group markets.

    Code of Federal Regulations, 2010 CFR

    2010-10-01

    ... submit pricing and benefit data for portal plans associated with products that are newly open or newly... 45 Public Welfare 1 2010-10-01 2010-10-01 false Data submission for the individual and small group... RELATING TO HEALTH CARE ACCESS HEALTH CARE REFORM INSURANCE WEB PORTAL § 159.120 Data submission for the...

  9. Thermomechanical and Thermochemical Behavior of a Hafnium-20 Percent Tantalum Alloy. Ph.D. Thesis - North Carolina State Univ., Raleigh

    NASA Technical Reports Server (NTRS)

    Howell, J. P.

    1971-01-01

    An investigation was conducted to determine the thermomechanical and thermochemical behavior of a high temperature, oxidation resistant, hafnium-20 percent tantalum alloy. The elastic and shear moduli of this alloy were determined in air up to 1000 C and in vacuum up to 2000 C using a mechanical resonance technique. The internal friction of the alloy was measured up to temperatures greater than 1400 C. Room temperature stress-strain behavior of the oxidized and unoxidized alloy was established. The effect of annealing on the elastic and shear moduli of the extruded rod material was investigated. The martensitic-type phase transformation occurring in the alloy was studied using hot stage metallography and electron microscopy. Static oxidation tests were conducted on the alloy at temperatures from 1000 C to 1700 C with weight gain measurements made as a function of time and temperatures. Surface morphology studies were conducted on the oxide coatings formed at the different temperatures using scanning electron microscopy and X-ray diffraction techniques.

  10. 40 CFR 159.178 - Information on pesticides in or on food, feed or water.

    Code of Federal Regulations, 2012 CFR

    2012-07-01

    ... 40 Protection of Environment 25 2012-07-01 2012-07-01 false Information on pesticides in or on... (CONTINUED) PESTICIDE PROGRAMS STATEMENTS OF POLICIES AND INTERPRETATIONS Reporting Requirements for Risk/Benefit Information § 159.178 Information on pesticides in or on food, feed or water. (a) Food and feed...

  11. 40 CFR 159.178 - Information on pesticides in or on food, feed or water.

    Code of Federal Regulations, 2013 CFR

    2013-07-01

    ... 40 Protection of Environment 25 2013-07-01 2013-07-01 false Information on pesticides in or on... (CONTINUED) PESTICIDE PROGRAMS STATEMENTS OF POLICIES AND INTERPRETATIONS Reporting Requirements for Risk/Benefit Information § 159.178 Information on pesticides in or on food, feed or water. (a) Food and feed...

  12. 40 CFR 159.178 - Information on pesticides in or on food, feed or water.

    Code of Federal Regulations, 2014 CFR

    2014-07-01

    ... 40 Protection of Environment 24 2014-07-01 2014-07-01 false Information on pesticides in or on... (CONTINUED) PESTICIDE PROGRAMS STATEMENTS OF POLICIES AND INTERPRETATIONS Reporting Requirements for Risk/Benefit Information § 159.178 Information on pesticides in or on food, feed or water. (a) Food and feed...

  13. BRAF Fusion Analysis in Pilocytic Astrocytomas: KIAA1549-BRAF 15-9 Fusions Are More Frequent in the Midline Than Within the Cerebellum

    PubMed Central

    Faulkner, Claire; Ellis, Hayley Patricia; Shaw, Abigail; Penman, Catherine; Palmer, Abigail; Wragg, Christopher; Greenslade, Mark; Haynes, Harry Russell; Williams, Hannah; Lowis, Stephen; White, Paul; Williams, Maggie; Capper, David; Kurian, Kathreena Mary

    2015-01-01

    Abstract Pilocytic astrocytomas (PAs) are increasingly tested for KIAA1549-BRAF fusions. We used reverse transcription polymerase chain reaction for the 3 most common KIAA1549-BRAF fusions, together with BRAF V600E and histone H3.3 K27M analyses to identify relationships of these molecular characteristics with clinical features in a cohort of 32 PA patients. In this group, the overall BRAF fusion detection rate was 24 (75%). Ten (42%) of the 24 had the 16-9 fusion, 8 (33%) had only the 15-9 fusion, and 1 (4%) of the patients had only the 16-11 fusion. In the PAs with only the 15-9 fusion, 1 PA was in the cerebellum and 7 were centered in the midline outside of the cerebellum, that is, in the hypothalamus (n = 4), optic pathways (n = 2), and brainstem (n = 1). Tumors within the cerebellum were negatively associated with fusion 15-9. Seven (22%) of the 32 patients had tumor-related deaths and 25 of the patients (78%) were alive between 2 and 14 years after initial biopsy. Age, sex, tumor location, 16-9 fusion, and 15-9 fusion were not associated with overall survival. Thus, in this small cohort, 15-9 KIAA1549-BRAF fusion was associated with midline PAs located outside of the cerebellum; these tumors, which are generally difficult to resect, are prone to recurrence. PMID:26222501

  14. 17 CFR 1.59 - Activities of self-regulatory organization employees, governing board members, committee members...

    Code of Federal Regulations, 2012 CFR

    2012-04-01

    ... COMMODITY EXCHANGE ACT Miscellaneous § 1.59 Activities of self-regulatory organization employees, governing...) Self-regulatory organization means “self-regulatory organization,” as defined in Commission regulation... governors of a self-regulatory organization. (3) Committee member means a member, or functional equivalent...

  15. 17 CFR 1.59 - Activities of self-regulatory organization employees, governing board members, committee members...

    Code of Federal Regulations, 2011 CFR

    2011-04-01

    ... COMMODITY EXCHANGE ACT Miscellaneous § 1.59 Activities of self-regulatory organization employees, governing...) Self-regulatory organization means “self-regulatory organization,” as defined in Commission regulation... governors of a self-regulatory organization. (3) Committee member means a member, or functional equivalent...

  16. 17 CFR 1.59 - Activities of self-regulatory organization employees, governing board members, committee members...

    Code of Federal Regulations, 2010 CFR

    2010-04-01

    ... COMMODITY EXCHANGE ACT Miscellaneous § 1.59 Activities of self-regulatory organization employees, governing...) Self-regulatory organization means “self-regulatory organization,” as defined in Commission regulation... governors of a self-regulatory organization. (3) Committee member means a member, or functional equivalent...

  17. Efficient UV-emitting X-ray phosphors: octahedral Zr(PO 4) 6 luminescence centers in potassium hafnium-zirconium phosphates K 2Hf 1- xZr x(PO 4) 2 and KHf 2(1- x) Zr 2 x(PO 4) 3

    NASA Astrophysics Data System (ADS)

    Torardi, C. C.; Miao, C. R.; Li, J.

    2003-02-01

    Potassium hafnium-zirconium phosphates, K 2Hf 1- xZr x(PO 4) 2 and KHf 2(1- x) Zr 2 x(PO 4) 3, are broad-band UV-emitting phosphors. At room temperature, they have emission peak maxima at approximately 322 and 305 nm, respectively, under 30 kV peak molybdenum X-ray excitation. Both phosphors demonstrate luminescence efficiencies that make them up to ˜60% as bright as commercially available CaWO 4 Hi-Plus. The solid-state and flux synthesis conditions, and X-ray excited UV luminescence of these two phosphors are discussed. Even though the two compounds have different atomic structures, they contain zirconium in the same active luminescence environment as that found in highly efficient UV-emitting BaHf 1- xZr x(PO 4) 2. All the three materials have hafnium and zirconium in octahedral coordination via oxygen-atom corner sharing with six separate PO 4 tetrahedra. This octahedral Zr(PO 4) 6 moiety appears to be an important structural element for efficient X-ray excited luminescence, as are the edge-sharing octahedral TaO 6 chains for tantalate emission.

  18. 17 CFR 1.59 - Activities of self-regulatory organization employees, governing board members, committee members...

    Code of Federal Regulations, 2014 CFR

    2014-04-01

    ... COMMODITY EXCHANGE ACT Miscellaneous § 1.59 Activities of self-regulatory organization employees, governing...) Self-regulatory organization means “self-regulatory organization,” as defined in § 1.3(ee), and... member, or functional equivalent thereof, of the board of governors of a self-regulatory organization. (3...

  19. 17 CFR 1.59 - Activities of self-regulatory organization employees, governing board members, committee members...

    Code of Federal Regulations, 2013 CFR

    2013-04-01

    ... COMMODITY EXCHANGE ACT Miscellaneous § 1.59 Activities of self-regulatory organization employees, governing...) Self-regulatory organization means “self-regulatory organization,” as defined in § 1.3(ee), and... member, or functional equivalent thereof, of the board of governors of a self-regulatory organization. (3...

  20. Facing-target mid-frequency magnetron reactive sputtered hafnium oxide film: Morphology and electrical properties

    NASA Astrophysics Data System (ADS)

    Zhang, Yu; Xu, Jun; Wang, You-Nian; Choi, Chi Kyu; Zhou, Da-Yu

    2016-03-01

    Amorphous hafnium dioxide (HfO2) film was prepared on Si (100) by facing-target mid-frequency reactive magnetron sputtering under different oxygen/argon gas ratio at room temperature with high purity Hf target. 3D surface profiler results showed that the deposition rates of HfO2 thin film under different O2/Ar gas ratio remain unchanged, indicating that the facing target midfrequency magnetron sputtering system provides effective approach to eliminate target poisoning phenomenon which is generally occurred in reactive sputtering procedure. X-ray photoelectron spectroscopy (XPS) and Fourier transform infrared spectroscopy (FTIR) demonstrated that the gradual reduction of oxygen vacancy concentration and the densification of deposited film structure with the increase of oxygen/argon (O2/Ar) gas flow ratio. Atomic force microscopy (AFM) analysis suggested that the surface of the as-deposited HfO2 thin film tends to be smoother, the root-meansquare roughness (RMS) reduced from 0.876 nm to 0.333 nm while O2/Ar gas flow ratio increased from 1/4 to 1/1. Current-Voltage measurements of MOS capacitor based on Au/HfO2/Si structure indicated that the leakage current density of HfO2 thin films decreased by increasing of oxygen partial pressure, which resulted in the variations of pore size and oxygen vacancy concentration in deposited thin films. Based on the above characterization results the leakage current mechanism for all samples was discussed systematically.