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  • 1
    Electronic Resource
    Electronic Resource
    Critical current density of high-quality Bi2Sr2Ca2Cu3Ox thin films prepared by metalorganic chemical-vapor deposition (1992)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 72 (1992), S. 2951-2957 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Critical current densities Jc were measured in as-deposited, c-axis-oriented Bi2Sr2Ca2Cu3Ox thin films with Tc values as high as 97 K, which were prepared by metalorganic chemical-vapor deposition. These films showed high Jc ((approximately-greater-than)109 A/m2) at 77.3 K in high magnetic fields (≥1 T, H(parallel)a-b plane). The best values are 3.3×109 A/m2 at 1 T and 9.1×108 A/m2 at 8 T, which are the highest Jc for Bi-oxide thin films among those reported so far. There were no signs of weak links in the Jc(H) behavior, and the surface morphology examined by scanning electron microscopy showed no apparent grain boundaries. The values of Jc decreased sharply when the applied field deviated from the a-b plane, and went to zero at the angles where the field component in the c direction is nearly equal to the irreversibility field Hc2* parallel to the c axis. The angular dependence of Jc of these films is most reasonably explained by the theory of intrinsic pinning.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.351499
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  • 2
    Electronic Resource
    Electronic Resource
    Observation of stripe-direction dependence of threshold current density for AlGaInP laser diodes with CuPt-type natural superlattice in Ga0.5In0.5P active layer (1992)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 61 (1992), S. 737-739 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: An anisotropy for threshold current densities for AlGaInP laser diodes with CuPt-type natural superlattice (NSL) in a Ga0.5In0.5P active layer, grown on a (001) GaAs substrate, was observed, for the first time. Threshold current densities (Jth) for laser diodes with stripes in the [1¯10] and [110] direction were 1.35 and 2.10 kA/cm2, respectively. The lasers with a weak NSL formation in the active layer showed a very small anisotropy in Jth. Stripe direction dependence of electroluminescence (EL) polarization properties were also observed for lasers with well-developed NSL. The anisotropies in Jth and EL polarization properties are attributed to the existence of the NSL in the active layer and the appearance asymmetry previously observed in the NSL.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.107782
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  • 3
    Electronic Resource
    Electronic Resource
    Acclimation Temperature affects Activities of 5′-Nucleotidase and Acid Phosphatase and Lipid and Fatty Acid Composition in Carp Muscle Microsomes (1994)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 59 (1994), S. 0 
    Details
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Notes: The Km values of 5′-nucleotidase against IMP markedly increased below 6°C in the case of 32°C-acclimated carp muscle microsomes. This caused a break point at 6°C in the Arrhenius plot of 5′-nucleotidase activity against IMP at a low concentration. The discontinuity of temperature dependency was not found when a surfactant had been introduced. Muscle microsomes of carp acclimated at 32°C contained much more cholesterol and saturated fatty acid than those of 10°C-acclimated carp. Therefore, the difference of lipid composition seemed to be closely related to the change in kinetics of microsomal 5′-nucleotidase.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2621.1994.tb08178.x
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  • 4
    Electronic Resource
    Electronic Resource
    Unstable expansion of CAG repeat in hereditary dentatorubral–pallidoluysian atrophy (DRPLA) (1994)
    [s.l.] : Nature Publishing Group
    Nature genetics 6 (1994), S. 9-13 
    Details
    ISSN: 1546-1718
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Medicine
    Notes: [Auszug] Hereditary dentatorubral–pallidoluysian atrophy (DRPLA) is an autosomal dominant neurologic disorder characterized by variable combinations of myoclonus, epilepsy, cerebellar ataxia, choreoathetosis and dementia. By specifically searching published brain cDNA sequences for the presence of CAG ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/ng0194-9
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  • 5
    Electronic Resource
    Electronic Resource
    The gene for Machado–Joseph disease maps to human chromosome 14q (1993)
    [s.l.] : Nature Publishing Group
    Nature genetics 4 (1993), S. 300-304 
    Details
    ISSN: 1546-1718
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Medicine
    Notes: [Auszug] Machado–Joseph disease (MJD) is an autosomal dominant, multisystem neurodegenerative disorder involving predominantly cerebellar, pyramidal, extrapyramidal, motor neuron and oculomotor systems. Although it was first reported in families of Portuguese–Azorean descent, MJD has also been ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/ng0793-300
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  • 6
    Electronic Resource
    Electronic Resource
    High-quality superconducting thin films of Bi 2 Sr 2 Ca 2 Cu 3 O x grown in situ by metalorganic CVD (1992)
    [s.l.] : Nature Publishing Group
    Nature 355 (1992), S. 327-328 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The BSCCO system has many superconducting phases with various values of Tc: examples of bulk materials are the high-Tc phase Bi2Sr2Ca2Cu3Ox ('2223') with Tc^ 110 K and the low-Tc phase Bi2Sr2CaCu2Ov ('2212') with TC = 80K. It is difficult, however, to obtain films of the high-Tc phase 2223. ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/355327a0
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  • 7
    Electronic Resource
    Electronic Resource
    Mechanism of inhibition of IgE-dependent histamine release from rat mast cells by xestobergsterol A from the Okinawan marine spongeXestospongia bergquistia (1993)
    Springer
    Cellular and molecular life sciences 49 (1993), S. 145-149 
    Details
    ISSN: 1420-9071
    Keywords: Xestobergsterol A ; histamine release ; PI-PLC ; IP3 ; signal transduction
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract Histamine release from rat peritoneal mast cells induced by anti-IgE was essentially complete within 4–5 min. Xestobergsterol A and B, which are constituents of the Okinawan marine spongeXestospongia bergquistia Fromont, dose-dependently inhibited anti-IgE-induced histamine release from rat mast cells. The IC50 values of xestobergsterol A and B for histamine release in mast cells activated by anti-IgE were 0.07 and 0.11 μM, respectively. Anti-IgE stimulated PI-PLC activity in a mast cell membrane preparation. Xestobergsterol A dose-dependently inhibited the generation of IP3 and membrane-bound PI-PLC activity. Moreover, xestobergsterol A inhibited Ca2+-mobilization from intracellular Ca2+-stores as well as histamine release in mast cells activated by anti-IgE. On the other hand, xestobergsterol B did not inhibit the membrane-bound and cytosolic PI-PLC activity, IP3 generation or the initial rise in [Ca2+]i in mast cells activated by anti-IgE. These results suggest that the mechanism of inhibition by xestobergsterol A of the initial rise in [Ca2+]i, of the generation of IP3, and of histamine release induced by anti-IgE, was through the inhibition of PI-PLC activity.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01989419
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  • 8
    Electronic Resource
    Electronic Resource
    A toxic substance from the sea urchinToxopneustes pileolus induces histamine release from rat peritoneal mast cells (1991)
    Springer
    Inflammation research 32 (1991), S. 224-228 
    Details
    ISSN: 1420-908X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract A toxic substance (P-II fraction), fractionated from the pedicellariae of the sea urchinToxopneustes pileulus, dose-dependently caused the histamine release from rat peritoneal mast cells. The histamine release induced by P-II fraction increased with time, while compound 48/80 caused a more rapid histamine release. The dose-response curve for P-II fraction was studied with concentration 0.03–2.0 mg/ml. This reaction was dependent on Ca2+ and temperature. When glucose (5.5. mM) was omitted during the incubation step, the histamine release induced by P-II fraction was significantly reduced as compared to that of compound 48/80. Pyruvate reversed this reduction. On the other hand, the histamine release induced by P-II fraction was effectively potentiated by the addition of glucose (11.0 mM), but not that by compound 48/80. These results suggest that P-II fraction-induced histamine release differs from that of compound 48/80 disregards to the effects of glucose, because this histamine release appears to be more sensitive to the glycolytic pathway than compound 48/80-induced histamine release.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01980878
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  • 9
    Electronic Resource
    Electronic Resource
    Effect of dantrolene on histamine release from rat peritoneal mast cells (1991)
    Springer
    Inflammation research 32 (1991), S. 213-216 
    Details
    ISSN: 1420-908X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Dantrolene strongly and dose-dependently inhibited histamine release from rat peritoneal mast cells induced by anti-IgE. Dantrolene inhibited Ca2+-mobilization from intracellular Ca2+-store as well as histamine release in mast cells activated by anti-IgE, the effect on both of these phenomena being closely correlated. These results suggested that the effect of dantrolene on histamine release from rat mast cell might be due to the inhibition of Ca2+-release from intracellular Ca2+-store.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01980876
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  • 10
    Electronic Resource
    Electronic Resource
    Second-order vestibular neuron morphology of the extra-MLF anterior canal pathway in the cat (1994)
    Springer
    Experimental brain research 97 (1994), S. 387-396 
    Details
    ISSN: 1432-1106
    Keywords: Eye movement ; Horseradish peroxidase ; Semicircular canals ; Three-neuron arc ; Vestibulo-ocular reflex ; Cat
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract Second-order vestibular neurons form the central links of the vestibulo-oculomotor three-neuron arcs that mediate compensatory eye movements. Most of the axons that provide for vertical vestibulo-ocular reflexes ascend in the medial longitudinal fasciculus (MLF) toward target neurons in the oculomotor and trochlear nuclei. We have now determined the morphology of individual excitatory second-order neurons of the anterior semicircular canal system that course outside the MLF to the oculomotor nucleus. The data were obtained by the intracellular horseradish peroxidase method. Cell somata of the extra-MLF anterior canal neurons were located in the superior vestibular nucleus. The main axon ascended through the deep reticular formation beneath the brachium conjunctivum to the rostral extent of the nucleus reticularis tegmenti pontis, where it crossed the midline. The main axon continued its trajectory to the caudal edge of the red nucleus from where it coursed back toward the oculomotor nucleus. Within the oculomotor nucleus, collaterals reached superior rectus and inferior oblique motoneurons. Some axon branches recrossed the midline within the oculomotor nucleus and reached the superior rectus motoneuron subdivision on that side. Since these neurons did not give off a collateral toward the spinal cord, they were classified as being of the vestibulo-oculomotor type and are thought to be involved exclusively in eye movement control. The signal content and spatial tuning characteristics of this anterior canal vestibulo-oculomotor neuron class remain to be determined.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00241532
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