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  • 1975-1979  (25)
  • 1965-1969  (29)
  • 1
    Electronic Resource
    Electronic Resource
    Chemotaxis in Bacteria (1975)
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biophysics and Biomolecular Structure 4 (1975), S. 119-136 
    Details
    ISSN: 0084-6589
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1146/annurev.bb.04.060175.001003
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  • 2
    Electronic Resource
    Electronic Resource
    Photodynamische Wirkung auf das solide Ehrlich-Karzinom (1966)
    Springer
    Naturwissenschaften 53 (1966), S. 481-482 
    Details
    ISSN: 1432-1904
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Chemistry and Pharmacology , Natural Sciences in General
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00601763
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  • 3
    Electronic Resource
    Electronic Resource
    Theory and practice of image formation by the photoprojection method of submicron patterns (1978)
    Springer
    Applied physics 16 (1978), S. 279-287 
    Details
    ISSN: 1432-0630
    Keywords: 42.80 ; 85.30
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: Abstract Optical projection of masks is a very troublesome task if dimensions are in the submicron range. It is difficult to get an undistorted image in the resist. This problem can be overcome by introducing corrections in the penultimate mask. Till now this has been done by a trial and error method in which an acceptable pattern is made only after a time consuming iterative process. In this paper a description will be given of the image forming process in which diffraction at the penultimate mask and at the aperture of the lens are the critical features. Based upon this theory correction formulas are derived for the direct design of penultimate masks. Rules for maximum edge sharpness are given, so that the tolerance demands on the production process can be relaxed. Extensive experimental measurements are in good agreement with theory. It will be shown theoretically as well as practically that by asymmetrical arrangement of the optical system images of gratings with 0.2–0.3 μm linewidth can be obtained.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00885123
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  • 4
    Electronic Resource
    Electronic Resource
    Über Ordnungszustände in synthetischen Fasern und einige Zusammenhänge mit ihren Eigenschaften (1966)
    Springer
    Colloid & polymer science 210 (1966), S. 64-78 
    Details
    ISSN: 1435-1536
    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: Zusammenfassung Die Eigenschaften synthetischer Fasern hängen von ihrer Molekül- und Faserstruktur ab. Moleküllänge, Moleküllängenverteilung, die Statistik der Anordnung von Monomeren bei der Copolymerisation und die Steifheit des Moleküles sowie die Beweglichkeit von Molekülteilen im festen Zustand beeinflussen die Orientierbarkeit und die Kristallisation der Fasern und damit vor allem die mechanischen Eigenschaften und das thermische Umwandlungsverhalten. Im Anschluß an eine Darstellung der Fasermodelle wird eine Reihe von Fragen zur Veränderung der Faserstruktur bei der Faser-Herstellung, -Verarbeitung und bei ihrem Gebrauch diskutiert. Einige Beispiele zeigen, daß jede meßbare Fasereigenschaft von einer ganzen Reihe von Strukturparametern abhängt, bzw. daß jeder Strukturparameter eine Reihe von Fasereigenschaften bestimmt. Dabei gehen die Strukturparameter mit unterschiedlichem Gewicht und abhängig vom Wege, auf dem sie erreicht werden, in die Fasereigenschaften ein.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01500436
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  • 5
    Electronic Resource
    Electronic Resource
    Plasmaeffekte an einer ionisierten Heliumlinie (1966)
    Springer
    The European physical journal 191 (1966), S. 503-507 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract According to two different theories the 4686å-line of ionized Helium should be blue-shifted by measurable amounts. In the attempt of a precision measurement of the effect under several different plasma conditions no displacement could be found within the experimental accuracy of ±0.3å. A previous measurement is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01326827
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  • 6
    Electronic Resource
    Electronic Resource
    Absolutmessung einiger Argon-II-Übergangswahrscheinlichkeiten (1967)
    Springer
    The European physical journal 206 (1967), S. 184-188 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Some Ar II transition probabilities were measured absolutely using a tungsten ribbon lamp as a calibration standard. The plasma was produced by a conical Theta-pinch. Gas mixtures of H∶Ar and He∶Ar were used to exclude inhomogeneity of the layer as a possible source of error. Electron densities and temperatures were determined by measuring Hydrogen and Helium line profiles respectively, and line to continuum intensity ratios. The measured values can be compared with results of earlier experiments and with newer theoretical calculations. The agreement between the results of this experiment and the theoretical values is satisfactory.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01325926
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  • 7
    Electronic Resource
    Electronic Resource
    Experimental beta-decay energies of several neutron-rich nuclides with mass number 131≦A≦146 (1979)
    Springer
    The European physical journal 289 (1979), S. 407-413 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract With sources obtained from the on-line mass separator LOHENGRIN the beta-decay energies of131Sn,134Sb,135,136Te,143,146Ba and146La have been determined from measuredβ-endpoint energies. The experimental values are compared with the predictions of several mass formulae.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01409393
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  • 8
    Electronic Resource
    Electronic Resource
    Existence of Mott-Schwinger interaction by means of $$\vec p - $$ 12C elastic scattering (1979)
    Springer
    The European physical journal 293 (1979), S. 343-349 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract The aim of this work was the unambiguous proof of the existence of the Mott-Schwinger interaction. The analyzing power of the $$\vec p - $$ 12C elastic scattering was measured in the energy range from 450 to 600 keV for scattering anglesθ Lab=90° and 120° with an overall accuracy up toΔA=1·10−4. The data can be described very well with theR-matrix formalism including Mott-Schwinger interaction. Omitting this interaction large discrepancies occur.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01435277
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  • 9
    Electronic Resource
    Electronic Resource
    Absolute Übergangswahrscheinlichkeiten höherer Ionen (1967)
    Springer
    The European physical journal 199 (1967), S. 445-455 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract It is shown that by solely measuring intensities without explicit knowledge of the plasmatemperature or density absolute transition probabilities in the higher ions can be obtained. To do this one procures a mixture of Helium with the testgas and uses Helium as the “thermometergas” by determining the relative intensities of chosen He I and He II transitions. This measurement, however, is not used to determine an actual temperature but rather to deduce directly the relative populations in the test-gas-ions. This becomes possible if for certain levels a combination of ionization- and exitation potentials results in the same value for Helium and the testgas. An experimental test has been performed with Oxygen as an example and absolute O III-oszillator strength are quoted.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01332293
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  • 10
    Electronic Resource
    Electronic Resource
    Starkeffekt an Linien des einfach ionisierten Stickstoffs (1967)
    Springer
    The European physical journal 206 (1967), S. 309-318 
    Details
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A homogeneous and thermal plasma was produced by a modified T-tube. In a shot to shot analysis the lines of several multiplets of singly ionized Nitrogen were investigated as to their Starkeffect. Densities were determined by comparing the measured halfwidths of some neutral Helium-lines with the well established theory of Starkbroadening of these lines. The temperature followed from the relative intensities of the measured Helium- and Nitrogenlines assuming partial thermal equilibrium. The results of this experiment deviate from previous measurements ofDay et al. as well as from the theory of Starkbroadening in isolated lines of the heavier elements byGriem. It is shown (1) that the broadening in N II is a rough factor of two larger than theoretically expected, (2) that linebroadening in N II is proportional to the density, (3) that the Stark broadened lines follow dispersion profiles to the distance of several halfwidths from the line center.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01326112
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