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  • 1
    Electronic Resource
    Electronic Resource
    Magnetic properties of nanostructured wires deposited on the side edge of patterned thin film (2000)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 87 (2000), S. 4724-4726 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: In the present study, magnetic nanowires with various cross-sectional dimensions have been fabricated by evaporating a magnetic material on the side edges of the patterned nonmagnetic thin film. The method allows the lengths of the two short axes to be defined precisely by controlling the thickness of the oxide (Wx) and magnetic material (Wy). The MFM images of the produced Co wires (2 μm length) with dimensions of Wx=Wy=200 nm and Wx=Wy=50 nm present the single domain configuration. The MFM and magnetoresistance (MR) measurement demonstrate that the longitudinal magnetization switching field increases with the decrease of Wx and Wy, which becomes 1.3 kOe for wires with Wx=Wy=50 nm. The profile of the MR hysteresis suggests that considerable coherent rotation takes place before the irreversible longitudinal switching. Transverse saturation fields larger than 6 kOe were measured in the orthogonal two short axis directions, which confirms the successful fabrication of three-dimensional wires with comparable cross-sectional dimensions. © 2000 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.373139
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  • 2
    Electronic Resource
    Electronic Resource
    Alterations by a defect in a rice G protein α subunit in probenazole and pathogen-induced responses (2004)
    Oxford, UK : Blackwell Science Ltd
    Plant, cell & environment 27 (2004), S. 0 
    Details
    ISSN: 1365-3040
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: The rice dwarf1 (d1) mutant, which is deficient in an α subunit (Gα) of heterotrimeric G protein, was used to obtain specific evidence on the functions of Gα protein in defence signalling in rice. Using proteome analysis, a probenazole-inducible protein (PBZ1) was detected in the cytosolic fraction of leaf blade of the wild type, but not the d1 mutant. After treatment with probenazol, PBZ1 reached maximal levels at 72 h in the wild type but 96 h in the d1 mutant. The induction of PBZ1 by probenazole treatment was inhibited by protein kinase inhibitors. A 48-kDa putative mitogen-activated protein kinase (MAPK) and a 55-kDa putative Ca2+-dependent protein kinase (CDPK) showed lower activities in the cytosolic fraction of the d1 mutant than that of the wild type. The activities of these protein kinases were enhanced at 24 h in the wild type and 48 h in the d1 mutant after probenazole treatment. Although the d1 mutant responded to the rice blast fungus similarly to the wild type, the d1 mutant developed rice blight symptoms earlier than the wild type when infected with Xoo. In addition, the blight symptoms were more severe on the mutant than on the wild type, and wilting was frequently observed in the d1 mutant. Furthermore, induction by the bacterial infection of the 48-kDa putative MAPK and PBZ1 was delayed by 2 and 4 d, respectively, in the d1 mutant compared with the wild type. These results indicate that the Gα protein plays a role in the induction of PBZ1 and protein kinases by probenazole and Xoo, and suggest that the 48-kDa putative MAPK may be involved in a signalling pathway for resistance to bacterial infection.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-3040.2004.01202.x
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  • 3
    Electronic Resource
    Electronic Resource
    Effect of Tin Addition on Phase Constitution and Heat Treatment Behavior in Ti-40Ta-Sn Alloys (2004)
    s.l. ; Stafa-Zurich, Switzerland
    Materials science forum Vol. 449-452 (Mar. 2004), p. 1273-1276 
    Details
    ISSN: 1662-9752
    Source: Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Using Ti-40mass%Ta-0, -4, -8 and -12mass%Sn alloys, the effect of Sn addition on phaseconstitution in the solution treated and quenched state and isochronal heat treatment behavior isstudied by electrical resistivity and Vickers hardness measurements and X-ray diffactometry. Toconfirm shape memory effect of some of these alloys, shape-recovery test was also performed.Orthorhombic martensite, [removed info]” was identified in Ti-40Sn-0 to 8Sn alloy quenched from 1173K, while[removed info] phase was identified in STQed Ti-40Ta-12Sn alloy. On isochronal heat treatment, increases ofresistivity at LN and resistivity ratio were observed in only 8Sn alloy, because these increases aredue to reverse-transformation of [removed info]” to [removed info] phase. From result of shape recovery test, shape memoryeffect was observed in Ti-40Ta-4 and 8Sn alloys
    Type of Medium: Electronic Resource
    URL: http://www.tib-hannover.de/fulltexts/2011/0528/02/08/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.449-452.1273.pdf
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  • 4
    Electronic Resource
    Electronic Resource
    Cold stress-induced calcium-dependent protein kinase(s) in rice (Oryza sativa L.) seedling stem tissues (2000)
    Springer
    Theoretical and applied genetics 101 (2000), S. 355-363 
    Details
    ISSN: 1432-2242
    Keywords: Key words Cold stress ; Ca2+-dependent protein kinase ; In-gel phosphorylation assay ; Rice
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  Ca2+-dependent protein kinases (CDPKs) play an important role in plant signal transduction. Protein kinase(s) activities induced by 5°C cold stress in rice (Oryza sativa L.) seedlings were investigated in both leaf and stem tissues in an early (up to 45 min) and late (up to 12 h) response study. The leaf had 37-, 47- and 55-kDa protein kinase activities, and the stem had 37-, 47- and 55-kDa protein kinase activities. A 16-kDa protein showed constitutive kinase activity in the rice seedling leaf and stem. It was further identified that the 47-kDa protein kinase activity induced by cold in both the cytosolic and membrane fractions of the stem was strictly Ca2+-dependent. This CDPK activitiy increased in the presence of the Ca2+ ionophore A23187 in stem segments, whereas it was decreased by the Ca2+ channel blocker, LaCl3, and the Ca2+ chelator, EGTA. The general protein kinase inhibitor, staurosporine, completely inhibited this CDPK activity in vitro, and both W7, a calmodulin antagonist, and H7, a protein kinase C inhibitor, could only partially decrease this activity. The protein phosphatase inhibitor, okadaic acid, increased CDPK activity. This CDPK activity was also induced by salt, drought stress and the phytohormone abscicic acid. Among the 18 rice varieties tested, this cold-induced 47-kDa CDPK activity was stronger in the cold-tolerant varieties than in the sensitive ones.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s001220051491
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