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  • 1
    Electronic Resource
    Electronic Resource
    Oscillations of electric spatial patterns emerging from the homogeneous state in characean cells (1988)
    Springer
    European biophysics journal 16 (1988), S. 11-21 
    Details
    ISSN: 1432-1017
    Keywords: Spatial pattern ; oscillation ; electric potential ; self-organization ; dissipative structure ; Chara
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Physics
    Notes: Abstract Electric spatial patterns of bands formed along the cell wall of the characean internode were studied using a multi-electrode measuring system. The electric potential near the surface of the cell was measured by arranging about 25 electrodes along the cell at approximately 1.6 mm intervals. Since the time required for one scan over the cell length is only 1 s, the temporal change in the spatial pattern of surface electric potential can be readily observed. Oscillations were sometimes found as the electric pattern started to appear after the cell was illuminated. Fourier analysis shows that a single spatial mode arises gradually and then becomes stabilized in an oscillatory manner. A simple electric circuit model comprising three variables, i.e., a membrane potential, an electric current across the membrane and an electromotive force, can simulate well the oscillatory rise of bands. These results imply that the electric spatial pattern observed in characean internodes is a self-organized structure emerging far from equilibrium, known as a dissipative structure. Biophysical mechanisms of band formation are discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00255321
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  • 2
    Electronic Resource
    Electronic Resource
    Immunostimulation of antibody-producing cells and humoral antibody to fish bacterins by a biological response modifier (1987)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of fish biology 31 (1987), S. 0 
    Details
    ISSN: 1095-8649
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Biology
    Notes: Numbers of splenic antibody-producing cells and humoral antibody titres were elevated during immunization regimes in rainbow trout when the bacterins Yersinia ruckeri or Aeromonas salmonicida O-antigen preparations were mixed with the immunostimulator FK-565. Fish sampled 14 days after injection showed a marked increase in the immune response when doses of 5, 10 or 100 μg of antigen were used. The immunostimulator may aid initial antigen uptake and processing.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1095-8649.1987.tb05298.x
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  • 3
    Electronic Resource
    Electronic Resource
    Simulation of an aerobic composting of activated sludge using a statistical procedure (1987)
    Springer
    World journal of microbiology and biotechnology 3 (1987), S. 113-123 
    Details
    ISSN: 1573-0972
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Process Engineering, Biotechnology, Nutrition Technology
    Description / Table of Contents: Résumé L'évolution chronologique au cours du compostage des facteurs importants (quantité de CO2 produite, température, poids, et teneur en eau) a été simulée par une analyse de regression linéaire. D'autre part, la variation de température pendant la première phase du compostage a pu être éstimée de façon précise d'après le bilan thermique de la production microbienne de chaleur, déterminé par analyse de regression linéaire. En combinant cette simulation avec la méthode Simplex, on a déterminé un taux optimum d'aération réduisant à 16,7 h le temps nécessaire pour que la température s'élève à 65°C, c'est à dire au niveau où la plupart des bactéries pathogènes du compost sont tuées.
    Notes: Summary The time courses for the important factors in the composting process for activated sludge, that is the amount of CO2 generated, the temperature, weight change and water content of the composting materials, were simulated by means of regression analysis. Furthermore, we could accurately estimate the temperature change of the composting materials in the early phase of composting from the heat balance including microbial heat generation estimated by regression analysis. Combining this simulation method with the Simplex method, we determined the optimum aeration regimen that minimized the time required for the temperature to increase to 65°C, at which most pathogens in compost materials are killed, to be 16.7 h.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00933611
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  • 4
    Electronic Resource
    Electronic Resource
    Electron-microscopic study of the structure of metastable oxides formed in the initial stage of copper oxidation. IV. Cu4O-S1 and Cu4O-S2 (1987)
    Copenhagen : International Union of Crystallography (IUCr)
    Acta crystallographica 43 (1987), S. 343-346 
    Details
    ISSN: 1600-5740
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S0108768187097751
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  • 5
    Electronic Resource
    Electronic Resource
    A model for binding of inhalation anesthetics to membranes: two dose-dependent distinctly different binding modes (1986)
    Springer
    Colloid & polymer science 264 (1986), S. 817-822 
    Details
    ISSN: 1435-1536
    Keywords: Anesthesia theory ; lipid membrane ; interface ; gas adsorption
    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 Inhalation anesthetics currently in clinical use, such as halothane, methoxyflurane, enflurane, isoflurane, etc., are polar hydrophobic molecules, except nitrous oxide, which is an apolar and weak anesthetic, incapable of inducing surgical stage anesthesia. Experimental data are accumulating that these potent amphipathic inhalation anesthetics preferentially bind membranes and macromolecules on the surface at clinical concentrations. The anesthetic binding to lipid membranes in the low concentration range is characterized by a saturable curve approaching to a limiting value. When the anesthetic concentration s greatly increased above the clinical range, the binding starts to exceed the limiting saturation value. Our model for anesthetic binding to membranes consists of two parts: Langmuir-type adsorption to the membrane surface at the low concentration range and penetration into the hydrophobic core at the high concentration range. The present communication provides a statistical-thermodynamic basis to analyze this twostep interaction. An expression is derived for membrane capacitance as a function of anesthetic concentration, which explains the experimental data well. Binding parameters of anesthetics are estimated according to the theory.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01500760
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  • 6
    Electronic Resource
    Electronic Resource
    On periodic responses generated by a degenerate analog neuron model with periodic inputs (1987)
    Springer
    Biological cybernetics 56 (1987), S. 185-194 
    Details
    ISSN: 1432-0770
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Computer Science , Physics
    Notes: Abstract Periodic responses to periodically varying stimulating pulse sequences are mathematically described for a degenerate analog neuron model. The model used was derived by Yoshizawa et al. (1982) in their investigation of the state transition of an electronic model using a tunnel diode in a degenerate case. Periodic responses to constant pulse sequences for the model were described by them. In this paper, it is shown that periodic responses to periodically varying pulse sequences for the model are identical with those which the author previously described for a discrete neuron model.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00317993
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  • 7
    Electronic Resource
    Electronic Resource
    Particle ratios in double-meson production by baryon's fragmentation (1987)
    Springer
    The European physical journal 35 (1987), S. 399-403 
    Details
    ISSN: 1434-6052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The double-meson inclusive reaction in the fragmentation region of incident baryons is studied with the sequential decay mechanism of excited hadrons, which has successfully explained the variety of the longitudinal-momentum dependence of the single-particle inclusive cross sections. The production ratios of two charged pions with the opposite sign to those with the same sign by incident proton are reproduced with the values of the parameters obtained previously.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01570778
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  • 8
    Electronic Resource
    Electronic Resource
    The applications of the stark effect to the stabilization of the CO2 laser and the submillimeter laser (1987)
    Springer
    International journal of infrared and millimeter waves 8 (1987), S. 307-316 
    Details
    ISSN: 1572-9559
    Keywords: optically pumped submm laser ; stabilization ; Stark effect
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Methods based on the Stark effect are described for dither-free frequency stabilization of the optically pumped submm laser. The CO2 pump laser was stabilized using a Stark Lamb dip signal of the submm lasant in an external Stark cell. An estimated frequency stability (Δf/f) better than ±1.4×10−8, for one hour recording, was obtained by this method. The frequency of the submm laser was stabilized using the d.c. and a.c. Stark effects for a metal-dielectric rectangular waveguide laser. An estimated frequency stability of ±6×10−8 was obtained for 119 μm line of CH3OH laser for one hour recording.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01014561
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  • 9
    Electronic Resource
    Electronic Resource
    The effect of mineral elements on the maturity of peanut seed (1988)
    Springer
    Plant and soil 106 (1988), S. 263-268 
    Details
    ISSN: 1573-5036
    Keywords: calcium ; lipid ; peanut(Arachis hypogaea) ; potassium ; starch
    Source: Springer Online Journal Archives 1860-2000
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
    Notes: Abstract A greenhouse study was conducted to determine the effect, of certain nutrient elements, on the maturing peanut. Peanut fruits were grown in fruiting zones, which contained a complete nutrient medium, for 15 days. Individual plants were then cultured to maturity whilst allowing the fruit to develop in a nutrient medium which contained the complete nutrient (N, P, K, Ca, Mg and B) from which one element had been excluded. Except in the ‘minus B’ treatment, the basal seed weighed more than 500 mg. In the head seed the “minus Ca” treatment produced the lowest number of seeds which weighed 500 mg or more and P, K and B deficiencies produced not quite such low numbers of seeds above 500 mg. When basal and head seeds were grouped into 3 grades of fresh weights, those from Ca and K deficiencies produced smaller dry weights in seeds harvested on the 80th day. Seeds from a Ca deficient medium had a smaller lipid content and an increased sugar content. The starch content of the seed was decreased by K deficiency.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02371222
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  • 10
    Electronic Resource
    Electronic Resource
    The growth of diamond in microwave plasma under low pressure (1987)
    Springer
    Journal of materials science 22 (1987), S. 1557-1562 
    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 The synthesis of diamond particles in a low pressure plasma has been studied, with emphasis on the investigation of the substrate effect and the plasma conditions. It was found that a special pre-treatment of silicon substrate made it possible to form dense films, and a thickness of about 15μm could be reached by 20 h discharge. Unfortunately, however, the prepared films had poor adhesion. Observations by scanning electron microscope (SEM) showed that the poor adhesion was due to the fact that the film consisted of large particles with a diameter of about 10μm, and each particle had contacted to the substrate only by a point, not by a face. In addition, the plasma diagnostics of optical and ultraviolet emission spectroscopy (OES, 200–750 nm) revealed that CH and H radicals have come to be criteria for the formation of diamonds, and the ratio of radicals drastically affected the characteristics of the deposits. Nucleation and growth mechanism are also discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01132374
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