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  • 11
    Electronic Resource
    Electronic Resource
    Pseudogap Behavior in the Electronic Specific Heat of La2−xSrxCuO4 (1999)
    Springer
    Journal of low temperature physics 117 (1999), S. 353-357 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract In La214, the electronic specific heat coefficient γ (=C el /T) is gradually suppressed with lowering T below a certain temperature T* (〉 T c ), where the in-plane resistivity ρ and magnetic susceptibility χ also tend to be suppressed slightly. Temperature T*, increasing with lowering x, is in qualitative agreement with the mean field T c (T co ), estimated from the superconducting gap amplitude 2Δ o at T ≪ T c , as the onset temperature T* of a pseudogap in Bi2212. The gradual suppression of γ below ∼ T co implies that a pseudogap will also open up below ∼ T co in La214 as in Bi2212. In underdoped samples, whose pseudogap-like behaviors in C el(T) become marked, the anomaly of C el around T c is rather different from the BCS expectation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1022565515931
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  • 12
    Electronic Resource
    Electronic Resource
    Distributions of Water Masses and Currents in Tachibana Bay, West of Ari-ake Sound, Kyushu, Japan (1999)
    Springer
    Journal of oceanography 55 (1999), S. 515-529 
    Details
    ISSN: 1573-868X
    Keywords: Tachibana Bay ; water exchange ; T-S diagram ; tidal residual current ; ghost shrimp larvae
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences
    Notes: Abstract We have investigated the water mass distribution and circulation in Tachibana Bay, which is located in the junction area between Ari-ake Sound and Amakusa-Nada in western Kyushu, Japan. This was done to clarify the mechanism by which ghost shrimp larvae, originating from a sandflat of Amakusa-Shimoshima Island, are transported. Temperature and salinity data repeatedly obtained over the area of Tachibana Bay show that relatively low salinity water lies over northern part of the bay, while high salinity water lies over southern part of the bay. The location of the low salinity water margin tends to depend on the amount of rainfall several days before the observation. A large amount of rainfall makes a clear boundary between low and high salinity waters. Current velocity data indicate an eastward mean flow just north of Tomioka, northern tip of Amakusa-Shimoshima Island, and a clockwise mean flow approaching the Tomioka Bay sandflat, which should be suitable for the on-shore transport of the ghost shrimp postlarvae. Current measurements with shipboard ADCP just west of Hayasaki Strait, at the entrance of Ari-ake Sound, show that a westward tidal residual current tends to incline to the north, with evidence of a density current in the northern part of the western Hayasaki Strait.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1007891424160
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  • 13
    Electronic Resource
    Electronic Resource
    Antiferromagnetic Transition in Sr14−x Ca x Cu24O41 Investigated by Specific Heat Measurements (1999)
    Springer
    Journal of low temperature physics 117 (1999), S. 1677-1681 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Results for low temperature specific heat for single crystals of ladder/chain materials Sr 14−x Ca x Cu 24 O 41 (x= 0, 8, 10, 11.5) in magnetic field up to ∼15 T are reported. A sharp peak of the specific heat of a single crystal Sr 2.5 Ca 11.5 Cu 24 O 41, was found at ∼ 2.3 K, clearly indicating the onset of a long range order. In measurements of the specific heat in magnetic fields the transition temperature, T N , was found to shift to lower temperatures with increasing magnetic field, indicating that the ordering is antiferromagnetic, which has been confirmed by neutron scattering measurements. With decreasing x T N rapidly shifts to lower temperatures. For x=10 T N decreases to ∼ 1 K and for x= 0 no anomaly indicating the transition was found down to ∼ 0.6K
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1022584320670
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  • 14
    Electronic Resource
    Electronic Resource
    A case of drowning linked to ingested sulfides — a report with animal experiments (1996)
    Springer
    International journal of legal medicine 109 (1996), S. 42-44 
    Details
    ISSN: 1437-1596
    Keywords: Toxicology ; Drowning ; Sulfides ; Human tissue ; Distribution
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine , Law
    Notes: Abstract An adult male was found dead beneath a pool of sewage in the pump room of a fish market. Autopsy revealed the cause of death to be suffocation after aspirating sewage into the respiratory tract. Since hydrogen sulfide gas was detected in the atmosphere at the scene of the accident, gas poisoning was suspected and toxicological analysis of sulfides in body tissues was performed. The concentrations of sulfides in the blood, lung and kidney were 0.95 μmol/ml, 0.22 and 0.38 μmol/g, respectively. These values were remarkably higher than those in previously reported cases involving exposure to hydrogen sulfide gas. Therefore, oral intake of sulfides was assumed and the distribution of sulfides in tissues following oral administration of sodium sulfide solution was examined by means of animal experiments using rats. The concentration of sulfides in the blood from rats following oral intake was much higher than that seen following gas exposure. Based on these results, we concluded that the victim had been exposed to hydrogen sulfide gas and had then collapse into a pool of sewage containing sulfides. The sulfides which were distributed throughout the body tissues had mainly issued from the alimentary tract prior to death by drowning.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01369601
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  • 15
    Electronic Resource
    Electronic Resource
    Effects of gelation of alginate around chymotrypsin on reactivities (1997)
    Springer
    Colloid & polymer science 106 (1997), S. 257-261 
    Details
    ISSN: 1435-1536
    Keywords: Reactivities of chymotrypsin ; gelation of alginate ; immobilized enzyme ; effects of gelation ; capsule
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract To elucidate adding effects of alginate (Alg) and its gelation on the reactivities of chymotrypsin (Chy), three kinds of Chy-immobilized capsules were prepared by an interfacial condensation, i.e., (a) a capsule containing only Chy in the core (Chy capsule), (b) a capsule containing Chy in NaAlg (Chy capsule(NaAlg)) and (c) a capsule containing Chy in CaAlg gel (Chy capsule(CaAlg)). The coated film was poly(ethylenediamine-terephthaloyl) (PEDT) and NaAlg in the core was gelled in the state adhered tightly to the PEDT film. These Chyimmobilizing capsules were found to be useful for determining the effects of the gelation around Chy. 4-nitrophenyl acetate was used as a substrate. From the rates of efflux of the product (p-nitrophenol), apparent maximum velocitiesv max and the apparent Michaelis constantsK′m were obtained. The values ofv′max showed the maximum at pH=7.8 for all three capsules and were found not to show any pH shift. The magnitude ofv′max was in the following order: Chy capsule (CaAlg) 〉 Chy capsule (NaAlg)-Chy capsule. The adding effects of Alg and its gelation on the reactivities of Chy are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01189533
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  • 16
    Electronic Resource
    Electronic Resource
    LaB6 and TiB2 electrodes for the alkali metal thermoelectric converter (1998)
    Springer
    Journal of materials science 33 (1998), S. 755-762 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract LaB6 and TiB2 electrodes for the alkali metal thermoelectric converter (AMTEC) were prepared from the respective powders by a screen-printing method and their electrode properties were investigated. Optimum values were obtained for particle size, thickness and porosity of electrode. When the vacuum level of the low-temperature side of the AMTEC increased above 10 Pa, the power density decreased remarkably. These results can be interpreted as different electrode processes in the AMTEC: (1) a charge transfer process, (2) surface diffusion on the electrode, (3) desorption from electrode particles, and (4) vapour-phase diffusion in the electrode pore. The maximum power density was 0.54 W cm−2 (LaB6) and 0.24 W cm−2 (TiB2 at 800 °C.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1004306315925
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