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  • 1
    Electronic Resource
    Electronic Resource
    Dye-laser frequency stabilization using optical resonators (1984)
    Springer
    Applied physics 33 (1984), S. 179-185 
    Details
    ISSN: 1432-0649
    Keywords: 06 ; 07.60 ; 42.60
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We describe a study, performed using heterodyne techniques, of the frequency fluctuations of two completely independent ring dye lasers locked to independent reference cavities. Single laser linewidths of less than 750 Hz were achieved, the principal limitation being residual vibrations from the noisy laboratory environment. With future design and environmental improvements, ultranarrow linewidths are expected thus providing a useful tool for a great variety of high precision experiments.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00688526
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Further studies on the mechanism of inhibition of intestinal chylomicron transport by Pluronic L-81
    Amsterdam : Elsevier
    Biochimica et Biophysica Acta (BBA)/Lipids and Lipid Metabolism 1004 (1989), S. 357-362 
    Details
    ISSN: 0005-2760
    Keywords: Chylomicron formation ; Endoplasmic reticulum ; Golgi apparatus ; Intestinal lipoprotein ; VLDL
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology , Medicine , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1016/0005-2760(89)90084-2
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Laser phase and frequency stabilization using an optical resonator (1983)
    Springer
    Applied physics 31 (1983), S. 97-105 
    Details
    ISSN: 1432-0649
    Keywords: 06 ; 07.60 ; 07.65
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We describe a new and highly effective optical frequency discriminator and laser stabilization system based on signals reflected from a stable Fabry-Perot reference interferometer. High sensitivity for detection of resonance information is achieved by optical heterodyne detection with sidebands produced by rf phase modulation. Physical, optical, and electronic aspects of this discriminator/laser frequency stabilization system are considered in detail. We show that a high-speed domain exists in which the system responds to the phase (rather than frequency) change of the laser; thus with suitable design the servo loop bandwidth is not limited by the cavity response time. We report diagnostic experiments in which a dye laser and gas laser were independently locked to one stable cavity. Because of the precautions employed, the observed sub-100 Hz beat line width shows that the lasers were this stable. Applications of this system of laser stabilization include precision laser spectroscopy and interferometric gravity-wave detectors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00702605
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Immunological detection and localization of a calsequestrin-like protein in red beet and cucumber cells (1994)
    Springer
    Protoplasma 179 (1994), S. 158-165 
    Details
    ISSN: 1615-6102
    Keywords: Beta vulgaris ; Calcium binding ; Calsequestrin ; Cucumis sativus ; Endoplasmic reticulum
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary Calsequestrin is a calcium binding protein present in the sarcoplasmic reticulum (SR) of animal muscle cells and is thought to be essential for the rapid uptake and release of Ca2+, and thus for the regulation of Ca2+-dependent cellular functions. Higher plant cells of red beet (Beta vulgaris L.) and cucumber (Cucumis sativus L.) contain a polypeptide of about Mr 55000 that cross-reacts with a monoclonal antibody raised against calsequestrin from rabbit skeletal muscle SR. In beet this protein changes its apparent molecular weight with pH as indicated in Western immunoblotting. Although this protein bound calcium it was not the dominant calcium-binding protein in red beet. Washing of beet root tissue leads to a slight increase of this polypeptide in microsomal fractions as indicated by immunoblotting. After immunoblotting to partially purified cell membrane fractions this polypeptide appeared to be predominantly associated with endoplasmic reticulum-enriched fractions. Immunogold labelling of ultrathin sections of cucumber hypocotyl using the anti-calsequestrin antibody showed that gold particles were very largely confined to the cytosol and often in close proximity to the ER. Clusters of up to nine gold particles were observed, often over small vesicular areas, as observed in some animal tissues. These results indicate that red beet and cucumber cells contain a protein which may be related to animal calsequestrin. It appears to be associated with the ER and could be involved in cellular calcium regulation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01403954
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    Paper (German National Licenses)
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