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  • 1
    Electronic Resource
    Electronic Resource
    Study on the preparation of 90-K superconductor LaBa2Cu3Oy (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 4095-4102 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The high-Tc superconductor LaBa2Cu3Oy has been prepared under various conditions, and characterized by x-ray and neutron powder diffraction techniques, dc and ac magnetic susceptibility measurements, and dc resistivity measurement. It has been found that samples with excellent superconducting characteristics and also with good structural properties are obtained in a reproducible way if the following three procedures are performed: preheat treatment of La2O3 powders, sintering in N2, and low-temperature annealing in dried O2. Long-time annealing in undried O2 was sometimes found to degrade the grain boundaries and to lead to a lower zero-resistance temperature.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.341318
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  • 2
    Electronic Resource
    Electronic Resource
    6-GeV synchrotron radiation project : International conference on synchrotron radiation instrumentation (1989)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 60 (1989), S. 1719-1721 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: This paper outlines the status of a 6-GeV synchrotron radiation designed at RIKEN. This facility consists of a main storage ring, a booster synchrotron, a 1.5-GeV preinjector linac, positron injection linacs, and others. The electronan GeV. The storage ring has a circumference of 1069.2 m and 7-m-long straight sections for insertion devices. The lattice of the main ring is a Chasman–Green-type one and has 36 periodicity. The low emittance (εx=8.2 nm rad) and large dynamic aperture are expected even with field errors and misalignments of magnetic elements. Three years of a preconstruction research and development period and 5 years of construction period are scheduled.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1140937
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  • 3
    Electronic Resource
    Electronic Resource
    High transition temperature superconductor LaBa2Cu3O7−y with zero resistance at 92 K (1988)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 52 (1988), S. 1989-1991 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Samples of LaBa2 Cu3 O7−y have been synthesized, which show a superconducting transition above 90 K. One of the samples shows a superconducting transition with an onset at 93 K and a zero resistivity at 92 K. These temperatures are the highest among those reported so far on this system and even higher than those in YBa2 Cu3 O7−y. The magnetic susceptibility measurement also shows that it has a superconducting transition with onset at around 93 K. To synthesize such good LaBa2 Cu3 O7−y requires two important procedures. First is sintering above 950 °C in N2 gas atmosphere and the second is annealing at 300 °C in dried O2 gas atmosphere.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.99744
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  • 4
    Electronic Resource
    Electronic Resource
    Phase-dependent shift of free-running human circadian rhythms in response to a single bright pulse (1987)
    Springer
    Cellular and molecular life sciences 43 (1987), S. 1205-1207 
    Details
    ISSN: 1420-9071
    Keywords: Human circadian rhythm ; bright light pulse ; phase-shift ; temporal isolation ; phase response curve
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Responsiveness of free-running human circadian rhythms to a single pulse of bright light was examined in a temporal isolation unit. Bright light (5000 lx) of either 3 or 6 h duration, applied during the early subjective day, produced phase-advance shifts in both the sleep-wake cycle and the rhythm of rectal temperature; the light pulse had essentially no effect on the phase of the circadian rhythms, when it was introduced during the late subjective day or the early subjective night. The results indicate that bright light can reset the human circadian pacemaker.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01945525
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  • 5
    Electronic Resource
    Electronic Resource
    Entrainment of human circadian rhythms by artificial bright light cycles (1987)
    Springer
    Cellular and molecular life sciences 43 (1987), S. 572-574 
    Details
    ISSN: 1420-9071
    Keywords: Human circadian rhythm ; entrainment ; artificial bright lights ; temporal isolation
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary Artificial bright light cycles (LD 8∶16) of about 5000 lux during the light period were applied to two subjects in a temporal isolation unit, who had shown free-running circadian rhythms in sleep-wakefulness and rectal temperature. The circadian rhythms were successfully entrained by the artificial light cycle, but the phase relation of the rhythms to the light cycle was substantially different between the two subjects. The result indicated that the artificial bright lights are able to reset human circadian rhythms.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02143589
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  • 6
    Electronic Resource
    Electronic Resource
    Hydrogenation of organic compounds in aqueous solution induced by hydrogen containing argon arc plasma (1989)
    Springer
    Origins of life and evolution of the biospheres 19 (1989), S. 229-230 
    Details
    ISSN: 1573-0875
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Geosciences
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02388823
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  • 7
    Electronic Resource
    Electronic Resource
    Geographical difference in mated status and autumn migration in the rice leaf roller moth, Cnaphalocrocis medinalis (1988)
    Springer
    Entomologia experimentalis et applicata 46 (1988), S. 141-148 
    Details
    ISSN: 1570-7458
    Keywords: rice leaf roller ; Cnaphalocrocis medinalis ; insect migration ; mating ; ovarian development ; light trap
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Résumé Une différence géographique dans l'activité reproductrice des papillons de la population de C. medinalis a été observée dans les champs de paddy d'automne du Kyushu septentrional au Japon. Cette différence géographique dans la fréquence des accouplements de la population ressemble à celle de l'importance de la densité d'immigration au début de l'été: la proportion de femelles inséminées est élevée dans les populations de la côte occidentale de Kyushu et basse dans la région intérieure. Les captures de papillons aux pièges lumineux, en 1985, suggèrent l'existence au Kyushu septentrional d'invasions d'outre-mer venant de Chine. Ces immigrations potentielles automnales de papillons dans les champs de paddy à maturité expliqueraient correctement les variations au cours de la même saison de l'activité reproductrice des papillons suivant les localités. Ces migrations ne sont apparemment pas adaptatives puisque les immigrants ou leur progéniture seront immédiatement tués à la récolte ou par le froid hivernal.
    Notes: Abstract A geographical difference in reproductive status of moths in populations of C. medinalis Guénée was recognized in autumn paddy fields of north Kyushu, south-west Japan. This geographical variation in mating frequency of the population resembled the intensity of immigrant density in early summer: the proportion of mated females in the population was high in the west coast regions of Kyushu and low in inland areas. Light trap catches of moths in 1985 suggested overseas invasions from China in the autumn to westerly regions of north Kyushu. The potential autumn immigrations of moths in ripening paddy fields would satisfactorily explain the variations in reproductive status of moths with locality in the same season. These migrations are apparently non-adaptive because immigrants or their progeny would soon be killed at harvest or from cold weather.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00190844
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