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  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of the American Chemical Society 69 (1947), S. 1410-1415 
    ISSN: 1520-5126
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 65 (1994), S. 3702-3706 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A new force sensor element based on multilayer thin film technology and adapted for optical readout in a conventional scanning force microscope has been developed. The use of polymers as cantilever materials enables the introduction of mechanical properties otherwise not accessible with microfabrication based on Si technology. The fully batched fabricated cantilevered force transducer is based on the photoresist novolak and incorporates an integrated EBD tip. Bending experiments on microstructures indicate that the Young's modulus of novolak is about two orders of magnitude lower than for Si. Therefore, in using a cantilever design similar to that with Si it is possible to fabricate more flexible structures from polymeric materials. The new force sensors have been tested and their performance has been evaluated on different samples. © 1994 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Industrial & engineering chemistry research 31 (1992), S. 2345-2362 
    ISSN: 1520-5045
    Source: ACS Legacy Archives
    Topics: Chemistry and Pharmacology , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 208 (1965), S. 993-994 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The Virgo cluster of galaxies is the nearest of the large clusters, at a distance of about 12 megaparsecs. A preliminary investigation of 18 member galaxies has been made during 1964 and 1965 with the Australian 210-ft. telescope. 21 cm radiation has been detected from eight of these, including the ...
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    OR spectrum 16 (1994), S. 248-248 
    ISSN: 1436-6304
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mathematics , Economics
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 0992-7689
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Notes: Abstract 50-MHz type-II coherent echoes at geometrical aspect angles of 11.5○ have been observed in the northern polar cap during pre-noon hours. The echoes had an unusually large Doppler width of 1200–1400 m s−1 and were well correlated with strong magnetic disturbances in the range 500–1000 nT. The dependence of intensity, spectral width and skewness versus radial velocity were similar to those known from previous experiments at lower latitudes and at small aspect angles. It is concluded that echo onset was due to the combination of several factors, including a highly conducting ionosphere, the presence of a very intense electric field, and strong radar wave refraction.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    [s.l.] : Nature Publishing Group
    Nature 363 (1993), S. 242-244 
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Sublimation-grown single crystals of /?-terphenyl containing 10 7-10 8 mol/mol pentacene were cooled to 1.5K. As described in detail previously7, fluorescence excitation of single pentacene molecules in these samples was achieved by focusing a narrow-band single-mode laser to a spot of ...
    Type of Medium: Electronic Resource
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  • 8
    ISSN: 1432-1114
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A new method for the determination of the velocity field with all three velocity components in a light sheet was demonstrated that combines conventional particle tracking anemometry (PTA) with an intensity analysis of the particle flecks. The correlation between intensity and the dimension perpendicular to the light sheet was obtained from the monotonous variation of the laser light intensity across the width of the light sheet.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    Experiments in fluids 17 (1994), S. 105-109 
    ISSN: 1432-1114
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract A PTA-technique for the in-plane determination of the three flow velocity vector components based on the defocused imaging of stray-particles has been investigated. The conventional setup for 2-D PTA has been modified by broadening the laser light-sheet to a width of approximately 1.5 mm and focusing the imaging optics in a plane in front of the laser light-sheet. Particles in the light-sheet are imaged out of focus and the image size of a particle therefore depends on its distance to the focal plane of the imaging optics. The increase of the particle image diameter within single particle tracks due to the defocusing was used to determine the velocity component perpendicular to the light-sheet. The results obtained with this technique in a well defined laminar air flow are in good agreement with LDV-data.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Histochemistry and cell biology 18 (1969), S. 325-336 
    ISSN: 1432-119X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Description / Table of Contents: Zusammenfassung Durch Allylformiatgaben i.p. gelingt es, in der Leber von Goldhamstern eine von portal nach zentral fortschreitende Nekrose des Läppchenparenchyms zu erreichen. Hierdurch werden zunächst die periportal gelegenen Funktionsfelder des Glykogenstoffwechsels ausgeschaltet. Mit histochemischer Methodik kann dann stets in der äußeren Zone des noch intakten Parenchymbereiches ein Saum hoher UDPGGT- und Phosphorylaseaktivität nachgewiesen werden. Die experimentelle Verlagerung von normalerweise periportal gelegenen Funktionsfeldern der Leber bis in die zentralen Läppchenbereiche widerspricht einmal der Annahme von stoffwechselmäßig spezialisierten Leberzellen in bestimmten Läppchenbereichen; darüber hinaus ergeben sich neue Interpretationsmöglichkeiten des Glykogenstoffwechsels in der Leber.
    Notes: Summary After i.p. administration of allyl formate to golden hamsters a necrosis of the parenchyma of the liver lobules, progressing from the portal to the central areas is detectable. So the periportally situated functional units of glycogen metabolism are destroyed at first. Using histochemical techniques in the outer zone of the intact parenchymal area can be found a border of high enzymatic activity of UDPGGT and phosphorylase. The experimental shifting of functional units, which normally lie in the periportal areas of the liver lobule unto the central areas is contradictory to the conception of metabolically specialized liver cells in certain zones of the liver lobule. The results of these experiments are discussed in regard of a new interpretation of the glycogen metabolism in the liver.
    Type of Medium: Electronic Resource
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