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  • 1
    Electronic Resource
    Electronic Resource
    Frequency shift of 1.45 MHz for 337-μm HCN laser beam with a super rotating grating (1991)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 62 (1991), S. 304-307 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A frequency shift of ω1F/2π=1.45 MHz is obtained for a 337-μm HCN laser beam by use of a rotating grating fabricated on the top of the rotor of a turbomolecular pump with a high rotating speed of 43200 rpm (super rotating grating). The frequency shift is one order higher than those with usual rotating gratings. Using this as a local beam, heterodyne detection of low-frequency microturbulence as well as high time resolution interferometry in plasmas becomes possible with a single far-infrared laser. The frequency-shifted beam is slightly frequency modulated (modulation index Mf(approximately-equal-to)1.2) with a period equal to the rotation period of the grating. This frequency modulation does no harm to these diagnostics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1142118
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  • 2
    Electronic Resource
    Electronic Resource
    Relationship between the incidence infection stones and the magnesium-calcium ratio of tap water (1993)
    Springer
    Urological research 21 (1993), S. 269-272 
    Details
    ISSN: 1434-0879
    Keywords: Geological features ; Magnesium ; calcium ration ; Struvite ; Tap water ; Urinary stones
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary In a previous study we showed that the magnesium-calcium ratio of tap water is negatively correlated with the incidence of calcium-containing urinary stones. In this study we examined the relationship between the incidence of struvite stones, water hardness and the regional geological features on the basis of our previous study and an epidemiological study of urolithiasis performed in Japan. The magnesium-calcium ratio of tap water was found to correlate positively with the incidence of struvite stones. The tap water magnesium-calcium ratio was high in regions of basalt and sedimentary rock and was low in granite and limestone areas. The incidence of struvite stones in the regions of basalt and sedimentary rock was higher than that in the granite and limestone areas. Thus, this study suggested that the incidence of struvite stones is related to the magnesium-calcium ratio of tap water and to the regional geology, as is the case for calcium-containing stones.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00307709
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  • 3
    Electronic Resource
    Electronic Resource
    Effect of high energy shock waves on tumor cells (1990)
    Springer
    Urological research 18 (1990), S. 101-105 
    Details
    ISSN: 1434-0879
    Keywords: High energy shock wave ; Tumor cell
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Exposure of bladder tumor cell strain HT-1197, chronic bonemarrow leukemic cell strain K-562, and African green-turtle normal kidney cell strain Vero to high energy shock waves resulted in ultrastructural changes and a reduction in cell viability as determined by 3H-thymidine incorporation assay and flowcytometer. K-562 was the most sensitive while Vero was the most resistant to the high energy shock wave. By flowcytometry using anti BrdU antibody, described K-562 in the S phase was found to be inhibited by the exposure. Electron microscopy revealed destruction of microvilli over the cell surface and swollen mitochondria in K-562 and HT-1197. These effects were related to the number of high energy shock wave exposures. Our study demonstrates that a high energy shock wave has an anti-tumor effect in vitro.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00302468
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  • 4
    Electronic Resource
    Electronic Resource
    A new method for determination of urinary citrate (1992)
    Springer
    Urological research 20 (1992), S. 165-168 
    Details
    ISSN: 1434-0879
    Keywords: Urinary citrate ; HPLC ; Urolithiasis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary We have developed a new assay technique using high-performance liquid chromatography. The assay was performed at a flow rate of 0.7 ml/min, a temperature of 60°C and an ultraviolet absorption of 214 nm. Comparison of the results of the new assay with the results obtained for identical samples using the conventional fluorometric method demonstrated a very high correlation coefficient of 0.931.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00296531
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  • 5
    Electronic Resource
    Electronic Resource
    Determination of urinary oxalate by high-performance liquid chromatography monitoring with an ultraviolet detector (1990)
    Springer
    Urological research 18 (1990), S. 25-28 
    Details
    ISSN: 1434-0879
    Keywords: Urinary oxalate ; Anion exchange resin ; High-performance liquid chromatography ; Ultraviolet detector
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary High-performance liquid chromatography (HPLC) monitoring with an ultraviolet detector was carried out to measure urinary oxalate levels in urolithiasis. Interfering substances in urine were removed by anion exchange prior to chromatography. This procedure was found excellent with respect to sensitivity, reproducibility, and analytical recovery. The findings were in agreement with colorimetric date. The mean oxalate level in 24-hour urine was 30.5±15.1 mg in patients with a single episode and 36.3±9.8 mg in recurrent stone formers. The latter values was significantly higher than the normal control level (27.4±3.8 mg).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00294577
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  • 6
    Electronic Resource
    Electronic Resource
    The structure and mechanical properties of sheets prepared from bacterial cellulose (1990)
    Springer
    Journal of materials science 25 (1990), S. 2997-3001 
    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 A sheet obtained from bacterial cellulose had a remarkably high modulus of elasticity as reported in Part 1 of this series. The Young's modulus of a sheet prepared by squeezing and drying a gel-like pellicle of bacterial cellulose was found to be 〉 15 G Pa. In addition, it has been found that treatment of the gel-like pellicles or dried sheets of bacterial cellulose with alkaline and/or oxidative solutions improves the mechanical properties significantly, and the Young's modulus of the resulting sheets approaches 30 G Pa. In this paper, improvement of the mechanical properties of bacterial cellulose sheets by the removal of impurities is investigated and the applicability of bacterial cellulose to diaphragms of electroacoustic transducers is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00584917
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    Paper (German National Licenses)
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