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  • 1975-1979  (25)
  • 1950-1954  (6)
  • 1
    Electronic Resource
    Electronic Resource
    s.l. : American Chemical Society
    Journal of agricultural and food chemistry 1 (1953), S. 152-157 
    ISSN: 1520-5118
    Source: ACS Legacy Archives
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Applied physics 16 (1978), S. 279-287 
    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.
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 18 (1953), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Journal of food science 18 (1953), S. 0 
    ISSN: 1750-3841
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition , Process Engineering, Biotechnology, Nutrition Technology
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Biophysics and Biomolecular Structure 4 (1975), S. 119-136 
    ISSN: 0084-6589
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Biology , Physics
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Meteorology and atmospheric physics 26 (1977), S. 361-379 
    ISSN: 1436-5065
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography , Physics
    Description / Table of Contents: Zusammenfassung Ursprung und Lebenslauf einer Gewitterlinie, die auf dem südafrikanischen Plateau beobachtet wurde, werden besprochen. Diese Gewitterlinie war mit einer Kaltfront assoziiert, was im allgemeinen in diesem Teil Südafrikas nicht der Fall ist. Die Gewitterlinie bewegte sich mit 35 km/h nach Nordosten, wesentlich schneller als die Front und mit einer mehr nördlichen Komponente als die Höhenwinde. Sie war mindestens 400 km lang, mit einem ununterbrochenen Mittelstück von 110 bis 130 km und nicht miteinander verbundenen Gewittern zu beiden Seiten. Im Raum von Johannesburg und Pretoria fiel Hagel von verschiedenen Gewitterzellen auf kleine Flächen. Radar Echos waren selten höher als 8 km über der Stationshöhe (1490 m über d. M.). Eine Gewitterzelle des Mittelstückes verstärkte sich in Intensität, Höhe und horizontaler Ausbreitung, während sie über Pretoria zog (die Echoobergrenze war zwischen 10 und 11 km); dabei fielen Hagelschlossen bis zu 3 cm Durchmesser. So wie die Nachbarzellen bewegte auch sie sich außergewöhnlich schnell und beinahe parallel zur Längsachse der Gewitterlinie (ostwärts mit 65 km/h) gemäß den Höhenwinden zwischen 600 und 500 mb. Der Echokern war auffällig nach Ostsüdosten geneigt was von der starken Windscherung verursacht wurde. Im Bereich dieses Überhanges fiel der Hagel bevor es am Boden anfing zu regnen.
    Notes: Summary The origin and life cycle of a squall line observed on the South African plateau are reviewed. The squall line was associated with a cold front whereas most squall lines in the subtropical part of the continent are not. It moved to the north-east and to the left of the upper winds at a speed of 35 km/h, which was considerably faster than that of the front. The squall line was at least 400 km long, with an unbroken central region of 110 to 130 km, on both sides of which were well-separated storms. In the area of Johannesburg and Pretoria, small patches of hail were produced by various cells. Radar echoes above 8 km AGL1 were rare. One cell of the unbroken portion while passing over Pretoria intensified rapidly, extended in all three dimensions (echo top up to 11 km AGL) and produced hailstones of up to 3 cm in diameter. Like its neighbouring cells, it moved exceptionally fast and almost parallel to the long axis of the squall line (eastewards at 65 km/h), following the winds between 600 and 500 mb. The echo core was tilted significantly towards east-south-east as a result of the strong wind shear. In the region of this overhang hailstones reached the ground before the onset of rain.
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  • 7
    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.
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  • 8
    ISSN: 1434-601X
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract TheQ β-values of85, 86Se,90Br,93Kr,103Nb and103Tc were measured using massseparated sources produced at the on-line mass separator LOHENGRIN. The experimental values are compared with mass formula predictions. Taking also into account earlier results, a subshell-closure effect for the neutron numberN=56 and proton numberZ=38 is shown to exist.
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  • 9
    Electronic Resource
    Electronic Resource
    Springer
    The European physical journal 293 (1979), S. 343-349 
    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.
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Theoretical and applied climatology 3 (1951), S. 308-323 
    ISSN: 1434-4483
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Description / Table of Contents: Summary The fulminant lung embolism (252 carefully examined cases of the years 1929–1940 of the results of the Pathologic Institute of Cologne University) shows no correlation with the passage of meteorological fronts in Cologne. But in the year 1937, a year with a sun-spot maximum, there is a weak but statistically significant correlation with solar disturbances, described by the international magnetic character-figures. This connexion has been asserted furthermore by the analysis of the obduction material of 13 pathological institutes of western Germany (226 embolisms).
    Abstract: Résumé L'embolie pulmonaire foudroyante (252 cas soigneusement contrôlés des années 1929 à 1940 et tirés du matériel d'autopsies de l'Institut pathologique de l'Université de Cologne) ne montrent à Cologne aucune relation avec les passages des fronts. Par contre l'année du maximum de taches solaires 1937, il existe une relation faible mais statistiquement prouvée avec les perturbations solaires traduites par les caractères magnétiques internationaux. Cette relation a été rendue plus vraisemblable par le dépouillement du matériel d'autopsies de 13 instituts pathologiques de l'Allemagne occidentale (226 embolies).
    Notes: Zusammenfassung Die fulminante Lungenembolie (252 sorgfältig geprüfte Fälle der Jahre 1929 bis 1940 aus dem Sektionsgut des Pathologischen Instituts der Universität Köln) zeigt in Köln keine Beziehung zum Durchzug meteorologischer Fronten. Dagegen ist in dem Jahr des Sonnenfleckenmaximums 1937 eine zwar schwache, aber statistisch gesicherte Beziehung zu den durch die erdmagnetischen Charakterzahlen beschriebenen solaren Störungen vorhanden. Dieser Zusammenhang wurde durch die Bearbeitung des Sektionsmaterials von 13 westdeutschen pathologischen Instituten erhärtet (226 Embolien).
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