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  • 11
    Electronic Resource
    Electronic Resource
    New methods for removing saccades in analysis of smooth pursuit eye movement (1988)
    Springer
    Biological cybernetics 60 (1988), S. 111-119 
    Details
    ISSN: 1432-0770
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Computer Science , Physics
    Notes: Abstract New computation methods for removing saccades in analysis of smooth pursuit eye movement characteristics were developed. They have removed saccades more completely than previous methods, and were very effective especially for noisy data recorded by the EOG method. The fully developed method was applicable to eye movement data in tracking of pseudo-random target movement as well as deterministic target movement. Furthermore, the methods were also useful for extracting the number and magnitudes of saccades more precisely.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00202898
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  • 12
    Electronic Resource
    Electronic Resource
    Fundamental study of heat transfer augmentation of tube inside surface by cascade smooth surface-turbulence promoters (1987)
    Springer
    Heat and mass transfer 21 (1987), S. 115-124 
    Details
    ISSN: 1432-1181
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Description / Table of Contents: Zusammenfassung Es werden bogenförmige längs der inneren Oberfläche eines runden Rohres angeordnete Turbulenz-Promotoren vorgeschlagen, welche die Reinigung des Rohres von Ablagerungen mittels Wisch-Bällen erlauben und das Wärmeübergangsverhalten verbessern. Zunächst wurde das Verhalten des Wärmeübergangs einer Luftströmung in einem rechteckigen Kanal für verschiedene Promotoren untersucht. Es zeigte sich, daß die bogenförmigen Promotoren den niedrigsten Druckverlust verursachen. Dann wurden die durch die bogenförmigen Promotoren verursachten Turbulenzstrukturen in einem runden Rohr gemessen unter Verwendung eines neu entwickelten ZweifarbenLaser-Doppler-Verfahrens. Es zeigte sich, daß der Wärmeübergangskoeffizient gut mit der Reynoldschen Schubspannung berechnet werden kann und daß eine optimale Höhe des Promotors existiert. Schließlich wurde die Eignung dieser Promotoren für die thermoelektrische Energiewandlung untersucht und die dabei gegebenen optimalen Bedingungen herausgestellt.
    Notes: Abstract Arc-shaped turbulence promoters along the circular tube inside surface which have capability of cleaning down tube fouling by sponge balls are proposed for enhancing the heat transfer performance. First, flow characteristics and heat transfer performance of air flow in a rectangular channel for several promoters were investigated. The arc-shaped promoter was found to have the lowest pressure loss. Secondly, turbulence structures of water flow by the arc-shaped promoters in a circular tube were measured by use of a newly developed two-color LDV. The local heat transfer coefficient was shown to be well correlated to the Reynolds stress and the existence of the optimum height of the promoter as elucidated. Lastly, performances of thermoelectric power generation by using cascade arc-shaped promoters for OTEC were measured and the optimum condition was investigated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01377567
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  • 13
    Electronic Resource
    Electronic Resource
    Spatio-temporal organization of intracellular ATP content and oscillation patterns in response to blue light byPhysarum polycephalum (1986)
    Springer
    Protoplasma 135 (1986), S. 31-37 
    Details
    ISSN: 1615-6102
    Keywords: Blue light ; Intracellular ATP ; Oscillation pattern ; Physarum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Phototactic responses in a giant amoeboid cell ofPhysarum plasmodium were studied both by analyzing intracellular ATP content and by applying image processing for recording oscillatory changes in thickness with use of a microcomputer. The ATP content fluctuated and deviated from the initial level upon exposure to light with varying wavelength from 400 to 600 nm. The maximum decrease in the integrated value $$\int\limits_{\text{O}}^{\text{T}} {{\text{ATP}}}$$ dt with T=9 minutes occurred at the wavelength 450 nm. The ATP in a migrating plasmodium distributed twice as high in the front as in the rear. This polar pattern became unstable, and a new wavy pattern appeared by stimulating a local frontal part with blue light. In a concentrically extending plasmodium, peripheral and inside regions oscillated in opposite phase to each other. When part of this organism was exposed to light, stimulated and unslimulated regions began to oscillate in opposite phase, and phase waves propagated inward the stimulated region. And the protoplasm there became thinner, the strongest avoidance reaction occurring to 450 nm light as in ATP response. Phototactic behavior inPhysarum is discussed in terms of bifurcation in spatio-temporal organization appearing in a self-organizing system.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01277050
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  • 14
    Electronic Resource
    Electronic Resource
    NAD(P)H oscillation in relation to the rhythmic contraction in thePhysarum plasmodium (1987)
    Springer
    Protoplasma 139 (1987), S. 141-144 
    Details
    ISSN: 1615-6102
    Keywords: NAD(P)H ; Oscillation ; UV irradiation ; Physarum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary ThePhysarum plasmodium shows rhythmic contractile activities with a period of a few min. Phases of the oscillation in the plasmodium migrating unindirectionally agreed sideways throughout at the frontal part. So, time course of an intracellular chemical component was determined by analyzing small pieces cut off successively from the frontal part of the large plasmodium. Intracellular NAD(P)H concentration oscillated with the same period as the rhythmic contraction but with a different phase advancing about 1/3 of the period. UV irradiation suppressed the rhythmic contraction without affecting the rhythmic variation of NAD(P)H. Thus, the NAD(P)H oscillator works independently of the rhythmic contractile system, but seems entraining with each other.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01282284
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  • 15
    Electronic Resource
    Electronic Resource
    Particle size analysis by sedimentation field flow fractionation. Performance and application (1989)
    Springer
    Colloid & polymer science 267 (1989), S. 1102-1107 
    Details
    ISSN: 1435-1536
    Keywords: Sedimentationfieldflowfractionation ; SFFF ; performance ; latex ; application ; silica
    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 Recently commercial equipment using sedimentation field flow fractionation (SFFF) has become available for analysis of particulate materials in the sub-micron range. This paper describes the DuPont instrument and discusses its performance. A particular study is described on the comparison of the SFFF technique with that of quasi-elastic light scattering (QELS). The paper concludes that the instrument is capable of measuring particle size distributions with high resolution and precision, provided that no particles above the upper size limit — about 1 μm — are present.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01496931
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  • 16
    Electronic Resource
    Electronic Resource
    Analytical study of plastics extrusion (1958)
    Springer
    Rheologica acta 1 (1958), S. 240-242 
    Details
    ISSN: 1435-1528
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01968874
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  • 17
    Electronic Resource
    Electronic Resource
    Measurement of the surface tensions and the interfacial tensions of n-pentane-water and R 113-water systems (1988)
    Springer
    International journal of thermophysics 9 (1988), S. 409-424 
    Details
    ISSN: 1572-9567
    Keywords: adhesion ; interfacial tension ; n-pentane ; pendant drop method ; R 113 ; spreading coefficient ; surface tension ; water
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The surface and the interfacial tensions of mutually immiscible liquid systems were experimentally studied. The measured systems are n-pentane-water and R 113-water, which are proposed as heat transfer fluids for a direct-contact heat exchanger to be used for geothermal and waste heat recovery plants. The experimental apparatus was constructed based on the principle of the pendant drop method. Measurements were performed in the temperature range from 20 to 150°C. Based on the correlation of the surface and the interfacial tensions, the temperature dependences of the spreading coefficient, the film pressure, and the work of adhesion in each system were calculated.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00513080
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  • 18
    Electronic Resource
    Electronic Resource
    Body shape measurement for scoliosis evaluation (1987)
    Springer
    Medical & biological engineering & computing 25 (1987), S. 583-585 
    Details
    ISSN: 1741-0444
    Keywords: Body shape ; Optoelectronics ; Scoliosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02441754
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  • 19
    Electronic Resource
    Electronic Resource
    The author's reply (1988)
    Springer
    Medical & biological engineering & computing 26 (1988), S. 332-332 
    Details
    ISSN: 1741-0444
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02447094
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