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  • 1
    Electronic Resource
    Electronic Resource
    Phase formation and magnetic properties of SmFe7Nx+αFe composite thin films (2000)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 87 (2000), S. 6585-6587 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Sm(Zr)Fe7Nx+αFe composite thin films were prepared on various substrates with differing values of thermal expansion from SmxFebalZry (11.3[less, double equals]x[less, double equals]17.8,0[less, double equals]y[less, double equals]3.2) targets by the rf sputtering method followed by annealing and nitrogenation. Their phase formation and magnetic properties were studied. All of the as-deposited films were amorphous, and the only films synthesized from the target with x=84 were crystallized into a composite of Sm(Zr)Fe7+αFe by annealing. Successive nitrogenation of the films with x=84 formed Sm(Zr)Fe7Nx+αFe composites whose grain diameter was estimated to be 30–50 nm. Despite the small coercivity of the prepared films, their recoil curves showed a remarkable spring-back phenomenon which originates in the exchange coupling between Sm(Zr)Fe7Nx and α Fe grains. The addition of Zr decreased the lattice constant, and choice of substrate did not affect the grain size. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.372778
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  • 2
    Electronic Resource
    Electronic Resource
    Mn–Zn ferrite thin films fabricated on crystalline substrates using laser ablation technique (2000)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 87 (2000), S. 6217-6219 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We report a fabrication of Mn–Zn ferrite thin films by a low temperature process. It was found that usage of crystalline substrates is an effective way to obtain crystallized Mn–Zn ferrite thin films at the substrate temperature of room temperature in laser ablation technique. The usage of crystalline substrates reduced the coercive force of the thin films by approximately 25% compared to that of the thin films fabricated on glass substrates. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.372659
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  • 3
    Electronic Resource
    Electronic Resource
    Organization and characterization of the two yeast ribosomal protein YL19 genes (1996)
    Springer
    Current genetics 30 (1996), S. 273-278 
    Details
    ISSN: 1432-0983
    Keywords: Key wordsSaccharomyces cerevisiae ; Ribosomal protein gene ; RPL19A ; RPL19B
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract A second copy of the Saccharomyces cerevisiae ribosomal protein YL19 gene was isolated through the use of the RPL19A gene as a probe. The nucleotide sequence of the gene, RPL19B, was determined. RPL19B contains an intron of 384 nucleotides located near its 5′-end. The coding regions of the two yeast genes, RPL19A and RPL19B, differ in only 34 nucleotides, none of which lead to changes in the amino-acid sequences of the predicted protein of 189 amino acids. RPL19B is also closely linked to a mitochondrial ADP/ATP carrier protein gene AAC2. Yeast cells containing disruption of either RPL19A or RPL19B formed smaller colonies than wild-type strains; however, simultaneous deletion of both genes is lethal.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002940050132
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  • 4
    Electronic Resource
    Electronic Resource
    Electrochemical behaviour of a hydrogen/oxygen gas mixture at a solid polymer electrolyte interface (1998)
    Springer
    Journal of applied electrochemistry 28 (1998), S. 1413-1418 
    Details
    ISSN: 1572-8838
    Keywords: energy conversion ; hydrogen purification ; hydrogen/oxygen gas mixture ; PEMFC ; solid polymer electrolyte
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Electrical Engineering, Measurement and Control Technology
    Notes: Abstract The electrochemical behaviour of a hydrogen/oxygen gas mixture at platinum electrodes in contact with a solid polymer electrolyte (Nafion 115) was studied in two modes: hydrogen enrichment and fuel cell. In the hydrogen enrichment (purification) mode, i/V(V being the applied voltage) characteristics were identified for the electrochemical cell arranged so that the gas mixture with varying ratios which contacts the anode was purified to pure hydrogen gas that was released at the cathode. In the fuel cell mode, V/i (V being the terminal voltage) characteristics were determined for the cell which utilized the gas mixture with varying ratio at the anode and pure oxygen at the cathode. The effect of the decrease in the mole fraction of hydrogen (χH2) on the current density or the terminal voltage was particularly severe for χH2〈0.6. The drop was analysed employing terms such as oxygen reduction current, oxygen adsorption and the change of e.m.f. (electromotive force) due to the decrease in the partial pressure of the hydrogen gas.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1003439925193
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    Paper (German National Licenses)
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