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  • 1
    ISSN: 1573-7357
    Keywords: 66.20.+d ; 67.50.Dg ; 67.50.Fi
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Measurements of the viscosity and the slip length are reported for both the normal liquid and superfluid3He within the slip approximation. We used the hollow torsional oscillator. For the normal liquid3He the slip length is shorter than the theoretical expectation and there is no anomaly near the superfluid transition, but the viscosity shows the anomalous deviation from the Fermi liquid behavior which is thought to be attributed to the superfluid fluctuation. For the superfluid3He, the temperature dependence of the slip length agrees with the theory qualitatively and the viscosity agrees well with the theory quantitatively as far as the slip approximation is valid.
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 1432-203X
    Keywords: Key words Arabidopsis HSP18.2 ; HSP promoter ; Heat shock ; GUS chimeric gene ; Nicotiana plumbaginifolia ; Organ-specific expression
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  The expression of the Arabidopsis heat-shock protein (HSP) 18.2 promoter β-d-glucuronidase (GUS) chimera gene was studied in various organs of the transgenic Nicotiana plumbaginifolia during the recovery phase at normal temperatures (20–22  °C) following heat-shock (HS) treatment. The optimum HS temperature for GUS activity in the anthers, petals and capsules was 42  °C, but in immature seeds and the placentas of capsules it was 36  °C and 39  °C, respectively. No apparent GUS activity was observed in any organs except for dry seeds after HS at 45  °C, although the activity in dry seeds was apparent even after HS at 48  °C. After HS at 42  °C, GUS activity in the flower tissues was the highest before anthesis and declined thereafter.
    Type of Medium: Electronic Resource
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  • 3
    ISSN: 1432-203X
    Keywords: Key words Arabidopsis HSP18.2 ; Heat shock protein promoter ; β-Glucuronidase ; Nicotiana plumbaginifolia
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract  The expression of the Arabidopsis heat shock protein (HSP) 18.2 promoter-β-d-glucuronidase (GUS) chimera gene was investigated in transgenic Nicotiana plumbaginifolia plants during the recovery phase at normal temperatures (20–22  °C) after a heat shock (HS) treatment. GUS activity increased during the recovery phase after HS at 42  °C for 2 h, and maximal GUS activity was observed after 12 h at normal temperatures, at levels 50–100 times higher than the activity immediately after HS. After HS at 44  °C, little GUS activity was observed during the first 20–24 h at normal temperatures, but the activity increased gradually thereafter, to reach a maximum at 40–50 h. After HS at 45  °C, no GUS activity was observed throughout the experimental period. RT-PCR analysis showed that GUS mRNA remained for 10 h after a 2-h HS at 42  °C and for 40 h after a 2-h HS at 44  °C. These findings demonstrate that brief HS treatment, especially at a sublethal temperature, induces a long-term accumulation of HSP-GUS mRNA during the recovery phase.
    Type of Medium: Electronic Resource
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