Search Results - (Author, Cooperation:K. Ishiyama)

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  1. 1
    Staff View
    Publication Date:
    2011-09-13
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    Alternative Splicing/genetics ; Exome/genetics ; Hematopoiesis/genetics ; Humans ; Mutation/*genetics ; Myelodysplastic Syndromes/*genetics ; Nuclear Proteins/genetics ; Polymorphism, Single Nucleotide/genetics ; RNA Splice Sites/genetics ; RNA Splicing/*genetics ; Ribonucleoproteins/genetics ; Spliceosomes/genetics
    Published by:
    Latest Papers from Table of Contents or Articles in Press
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  5. 5
    Ishiyama, K. ; Arai, K. I. ; Honda, T.

    [S.l.] : American Institute of Physics (AIP)
    Published 1991
    Staff View
    ISSN:
    1089-7550
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    The effect of impurities on the tertiary recrystallization and magnetic properties of the thin (10 to 100 μm) silicon steels was investigated. For purification, the conventional grain oriented silicon steels, which were used as starting materials with a thickness of 0.30 mm were pre-annealed at 1200 °C in a vacuum of 1×10−3 Pa before cold rolling. In sheets without pre-annealing, the tertiary recrystallization was observed after annealing for at least 3 h over 1200 °C in a vacuum. On the other hand, in pre-annealed sheets, the tertiary recrystallization was completed within 10 min at an annealing temperature of 1150 °C in a vacuum. Through recrystallization, B8 increased to 1.95 T. Even in sheets annealed at 1050 °C, the B8 increased with increasing the annealing time, and became 1.95 T after anneals of 2 h. The pre-annealed sheets were also annealed in hydrogen atmosphere. In this case, at annealing temperatures over 1100 °C, the tertiary recrystallization was completed in less than 1 h. Using the purified sheets, silicon steels with B8 over 1.9 T can be obtained by short time and low temperature annealing in either a vacuum or a hydrogen atmosphere.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  6. 6
    Yamashiro, Y. ; Yonesu, A. ; Hashi, S. ; Ishiyama, K. ; Arai, K. I.

    [S.l.] : American Institute of Physics (AIP)
    Published 1996
    Staff View
    ISSN:
    1089-7550
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    It has been actually required in recent years to decrease iron losses in transformer cores, as increment of electric energy consumption in all industries and homes. Answering to such requirements, Arai et al. developed a new type magnetic core material; it was tertiary recrystallized Si steel with 50 μm thickness, and it was of as low iron loss as an amorphous materials one. The Si steel was made by an annealing in a vacuum of 1×10−3 Pa and at a temperature of 1200 °C. In this study, we prepared samples for measurements from (110)[001] grain-oriented 3%Si steel with 300 μm thickness. We coldrolled them to about 50 μm using a four-high rolling mill, and then annealed in an atmosphere of highly pure Ar gas, from a point of view of saving energy. We investigated effects of annealing time, heating rate and gas flow rate on magnetic properties. The annealing temperature was fixed at 1000 °C. Hysteresis loops were drawn with single-sheet tester. Grain structure and its direction were decided by etch pit method. Coercive force Hc and induction B8 which is the induction at 800 A/m applied field were obtained from the hysteresis loops. The magnetic properties were somewhat changed according to the annealing condition. The coercive force varied from 5 to 30 A/m, and the induction varied from 1.45 to 1.85 T. The best properties, Hc was 5 A/m and B8 was 1.85 T, were obtained under the annealing condition; annealing time was 60 min, heating rate was 3 °C/s, and gas flow rate was 2 ι/min.The surfaces of the samples were not covered with tertiary recrystalline, but wholly with secondary recrystalline. About 90% grains were (110) plane, the rest was (100) plane. And about 90% [001] axes oriented to the rolling direction within five degree misorientation. © 1996 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  7. 7
    Nakano, M. ; Ishiyama, K. ; Arai, K. I. ; Fukunaga, H.

    [S.l.] : American Institute of Physics (AIP)
    Published 1997
    Staff View
    ISSN:
    1089-7550
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    We report a new method of preparing highly oriented 3% silicon steel sheets with a thickness of 100 μm, which enables us to realize the mass production with existing manufacturing facility. In our new method, a hot-rolled silicon steel is thinned to 100 μm by a three-step rolling process with intermediate annealings and the (110)[001] is created by the final annealing taking advantage of surface energy. The obtained 100-μm-thick sheets had the Goss texture and superior soft magnetic properties (the magnetic induction at 800 A/m, B8⋅=⋅1.9 T, the coercive force 〈4 A/m). In addition, the iron loss W 15/50 at 1.5 T, 50 Hz under the applied tensile strength of 2 kg/mm2 was 0.53 W/kg. This value is less than that of the conventional (300 μm) grain-oriented silicon steels by about 37%. © 1997 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  8. 8
    Takezawa, M. ; Yamaguchi, M. ; Ishiyama, K. ; Arai, K. I.

    [S.l.] : American Institute of Physics (AIP)
    Published 1998
    Staff View
    ISSN:
    1089-7550
    Source:
    AIP Digital Archive
    Topics:
    Physics
    Notes:
    This paper discusses two new kinds of micromagnetoelastic devices made on silicon wafer whose function is to control the permeability of magnetostrictive soft magnetic thin films by voltage-controlled elastic strain. One is piezoelectric type and the other is electrostatic type. Structure, fabrication process, characteristics, and maximum possible output are discussed. The feasibility of these devices has been clarified although the rate of obtained permeability change was less than 1%. These device characteristics could be improved to 11% for piezoelectric type and to 80% for electrostatic type by the optimization of device dimensions and reduction of process damage to the magnetic film. © 1998 American Institute of Physics.
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  9. 9
    Staff View
    ISSN:
    1476-4687
    Source:
    Nature Archives 1869 - 2009
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Notes:
    [Auszug] The chronic food shortage that was feared after the rapid expansion of the world population in the 1960s was averted largely by the development of a high-yielding semi-dwarf variety of rice known as IR8, the so-called rice 'green revolution'. The short stature of IR8 is due to a mutation in the ...
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  10. 10
    Miyamoto, Y. ; Ishiyama, K.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0038-1098
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  11. 11
    Staff View
    ISSN:
    0304-3991
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Electrical Engineering, Measurement and Control Technology
    Natural Sciences in General
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  12. 12
    Arai, K.I. ; Kim, Y.H. ; Yamaguchi, M. ; Ishiyama, K.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0304-8853
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  13. 13
    Endo, K. ; Ishiyama, K. ; Shinogi, A.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0304-8853
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  14. 14
    Arai, K.I. ; Ishiyama, K.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0304-8853
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  15. 15
    Saito, A. ; Yamamoto, K.-i. ; Ishiyama, K. ; Arai, K.-i.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0304-8853
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Physics
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  16. 16
    Hasegawa, E. ; Ishiyama, K. ; Horaguchi, T. ; Shimizu, T.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0040-4039
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Chemistry and Pharmacology
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  17. 17
    Tamura, Y. ; Maeda, H. ; Akai, S. ; Ishiyama, K. ; Ishibashi, H.

    Amsterdam : Elsevier
    Staff View
    ISSN:
    0040-4039
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Chemistry and Pharmacology
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  18. 18
    Staff View
    ISSN:
    0040-4039
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Chemistry and Pharmacology
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses
  19. 19
    Staff View
    ISSN:
    0040-4039
    Source:
    Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics:
    Chemistry and Pharmacology
    Type of Medium:
    Electronic Resource
    URL:
    Articles: DFG German National Licenses