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  • 1
    Electronic Resource
    Electronic Resource
    Effects of Spatial Coherence and Dispersive Diffraction on a Change in Optical Spectrum (1995)
    Springer
    Optical review 2 (1995), S. 6-12 
    Details
    ISSN: 1349-9432
    Keywords: spectral change ; polychromatic spatially partially coherent source ; spatial coherence control ; super-luminescent diode as a spectral source ; red and blue shift of the spectrum ; theory and experiments
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract This paper describes a change in optical spectrum on propagation in free space for a particular class of spatially partially coherent fields emanating from a polychromatic secondary source. A rectangular opening aperture in an opaque screen, illuminated with an extended incoherent polychromatic primary source, works as the secondary source. The spectral change is explored in detail theoretically and experimentally in association with spatial coherence in the secondary source as well as dispersive diffraction by the secondary source. The peak shift of the spectrum is associated with the coherence area for characterizing the secondary source. The peak shift becomes maximum if the secondary source is spatially coherent, but no shift occurs if the secondary source is spatially incoherent.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s10043-995-0006-1
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  • 2
    Electronic Resource
    Electronic Resource
    Highly Sensitive and Widely Dynamic Fiber-Coiled Deformation Sensor Immune from External Disturbances (1997)
    Springer
    Optical review 4 (1997), S. 342-345 
    Details
    ISSN: 1349-9432
    Keywords: double Mach-Zehnder interferometry ; optical heterodyne detection ; immunity from environmental disturbances ; polarization maintaining single-mode fiber ; fiber-coil deformation sensor
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract This paper describes a double fiber-coiled interferometric deformation sensor fabricated using paired polarization maintaining single-mode fibers. A change in bending-induced birefringence plays a fundamental role in the sensor performance as the fiber-coil is being deformed across its cross-section. Differential optical heterodyne detection processes allow us to implement two-mode operations; one is widely dynamic operation and the other highly sensitive operation around a target region. The deformation sensitivity for one-turn fiber-coil is 2.5 deg/mm for the widely dynamic operation, whereas 9.5X10 deg/mm for the highly sensitive operation. The double fiber-coiled deformation sensor can eliminate external, undesirable temperature disturbances.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s10043-997-0342-4
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  • 3
    Electronic Resource
    Electronic Resource
    An upper limit of visible emission from the plume generated by the impact of the K fragment of SL9 (1996)
    Springer
    Earth, moon and planets 73 (1996), S. 117-124 
    Details
    ISSN: 1573-0794
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract We monitored Jupiter with a video movie camera attached to a 1.3 m reflector during the impact event of the K fragment of D/Shoemaker-Levy 9. The camera was sensitive to visible radiation. A plume, which was generated by the impact and prominent in infrared wavelength, was not detected. Jovian images with hypothetical plumes were synthesized to examine how luminous the plume should have been to be recognized. It has been revealed that the plume was no more than twice as bright as Io in visible wavelength.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00114143
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  • 4
    Electronic Resource
    Electronic Resource
    Foam nest as a potential food source for anuran larvae: a preliminary experiment (1987)
    Springer
    Journal of ethology 5 (1987), S. 86-88 
    Details
    ISSN: 1439-5444
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02347899
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  • 5
    Electronic Resource
    Electronic Resource
    White-Light Frequency-Domain Interferometry Using a Köosters Prism (1998)
    Springer
    Optical review 5 (1998), S. 21-26 
    Details
    ISSN: 1349-9432
    Keywords: frequency-domain interferometry ; white-light source ; Kösters prism ; carrier frequency ; longterm stability ; absorption and dispersion measurements
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract An optical frequency-domain interferometer incorporating a Kösters prism is constructed to offer an excellent instrument for making a stable precision-measurement of material absorption and dispersion. The working stability is well retained over a long-term operation of 15 h, but the spectral resolution is limited to the resolving power of the spectrum analyzer used. The absorption and dispersion measurements are demonstrated by use of two samples of a BK-7 glass plate and rhodamine in ethanol.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s10043-998-0021-0
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  • 6
    Electronic Resource
    Electronic Resource
    Effect of Photo-Induced Periodic Gain Structure on Oscillation Power and Tunability in Polymer Dye Laser (2000)
    Springer
    Optical review 7 (2000), S. 18-21 
    Details
    ISSN: 1349-9432
    Keywords: dye laser ; tunable laser ; periodic gain structure ; organic polymer ; polymer dye laser
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Pumping dye-doped organic polymer by interference pattern of a frequency-doubled Nd:YAG 532 nm laser to induce a periodic gain-structure and confining it within a stable optical resonator, the oscillation output can be effectively enhanced in comparison with either that of uniform irradiation, i.e., pumping, or of distributed feedback (DFB) operation, and the oscillation wavelength becomes tunable by adjusting the period of the interference pattern. Using Rhodamine-B as a dopant over the range from 200 to 1000 ppm, the oscillation output was enhanced by - 10 dB, which was larger than the output of the uniform irradiation and was - 30% greater than the DFB scheme. Moreover, changing the period of the interference pattern by adjusting the setting angle of the Koster prism enables us to vary the oscillation wavelength around 600 nm.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s10043-000-0018-9
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  • 7
    Electronic Resource
    Electronic Resource
    Walk-Off Ring Coupling Type CO Laser (2000)
    Springer
    Optical review 7 (2000), S. 62-65 
    Details
    ISSN: 1349-9432
    Keywords: gas lasers ; CO lasers ; laser resonators ; optical resonators ; stable resonators ; laser beamcoupling
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract As a complementary scheme to a coupling-hole type laser, a walk-off ring coupling type laser is proposed to extract a donut shaped beam by shrinking the diameter of one of the stable resonator mirrors. This was successfully applied to a conventional slow axial-flow CO laser. First, finding the intensity distribution close to the Gaussian profile by using a partially transparent mirror in a hemispherical configuration for coupling, we obtain the relationship between the mirror radius and the effective transmittance. Then, using several mirrors with a diameter smaller than the Gaussian profile above instead of the partially transparent mirror, the output power with the donut shape was optimized to yield the maximum power, together with theoretical treatments. This resulted in an optimum mirror diameter of 4.2 mm, which corresponds to the optimum transmittance of 5-6% for the CO laser having the gain parameter G≅0.34, the inherent loss ā ≅ 0.07, and the measure of partial homogeneity m¯ =; 0.5. This value is exactly the same as that of the coupling-hole mirror. Some application feasibilities are also discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s10043-000-0062-5
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  • 8
    Electronic Resource
    Electronic Resource
    Local conformation of poly(1-adamantyl methacrylate) evaluated from intrinsic viscosity (1992)
    Springer
    Colloid & polymer science 270 (1992), S. 17-21 
    Details
    ISSN: 1435-1536
    Keywords: Poly(1-adamantyl methacrylate) ; intrinsic viscosity ; rigidity ; Mark-Houwink-Sakurada equation ; characteristic ratio ; steric factor
    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 The dilute-solution properties of poly(1-adamantyl methacrylate), which was prepared by radical polymerization in benzene at 60 °C and fractionated with benzene and ethanol as solvent and nonsolvent, respectively, were examined by the measurement of intrinsic viscosities in benzene, tetrahydrofuran, and cyclohexanone at 30°C. The Mark-Houwink-Sakurada equations were established for each solvent-polymer system. From the viscosity data in these three solvents by means of the Burchard-Stockmayer-Fixman plot, the characteristic ratio and steric factor of the chain were determined to be 16.7 and 2.9, respectively, which are higher than the values reported for other methacrylate polymers bearing cycloalkyl esters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00656924
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  • 9
    Electronic Resource
    Electronic Resource
    The status of cysteine residues in the extrinsic 33 kDa protein of spinach photosystem II complexes (1988)
    Springer
    Photosynthesis research 17 (1988), S. 255-266 
    Details
    ISSN: 1573-5079
    Keywords: disulfide (S-S) bond ; extrinsic 33 kDa protein ; Mn chelation ; oxygen evolution
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Two cysteine residues of the extrinsic 33 kDa protein in the oxygen-evolving photosystemII (PS II) complexes were found to exist as cystine residues in situ. The 33 kDa protein, when reduced by 2-mercaptoethanol in either the presence or the absence of 6 M guanidine-HCl (Gdn-HCl), could not rebind with the CaCl2-treated PS II complexes, from which the 33 kDa protein was removed, and evolve any oxygen. Two sulfhydryl (SH) groups of the 33 kDa protein were easily reoxidized to a disulfide (S-S) bond by stirring under aerobic conditions with the concomitant regaining of both the binding ability to the CaCl2-treated PS II complexes and the oxygen-evolving activity. The molecular conformation of the 33 kDa protein was examined by circular dichroic (CD) spectrometry in the UV regions to reveal that the conformation in the reduced state was completely different from those of the untreated and reoxidized states. The disulfide (S-S) bond of the 33 kDa protein is thus essential to maintain the molecular conformation required to function.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00035452
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  • 10
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    Thymic stromal lymphopoietin enhances tight-junction barrier function of human nasal epithelial cells (2009)
    Springer
    Details
    Publication Date: 2009-09-09
    Print ISSN: 0302-766X
    Electronic ISSN: 1432-0878
    Topics: Biology , Medicine
    Published by Springer
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