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  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Applied Surface Science 76-77 (1994), S. 367-373 
    ISSN: 0169-4332
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
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  • 2
    ISSN: 0169-4332
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Applied Surface Science 67 (1993), S. 451-458 
    ISSN: 0169-4332
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    Theoretical and applied climatology 1 (1949), S. 211-220 
    ISSN: 1434-4483
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geosciences , Physics
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 73 (2002), S. 1734-1740 
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: The knowledge of the detection efficiency of the microchannel plate is of upmost importance in many applications using this type of particle detector. However, few attempts have been made to measure the absolute value of the detection efficiency of microchannel plates. In this article, a new way of accurately measuring the absolute value of the detection efficiency is described. When particles hit the detector in the interchannel web of the microchannel plate, secondary electrons are generated. These secondary electrons can be returned to neighboring channels by means of an electric field applied at the front face of the detector. The resulting increase in the detection efficiency has been quantified using the absolute measurement of the detection efficiency. It is found that the value of the returning field has to be carefully set in order to prevent detection artifacts that may lead to a wrong estimation of the detection efficiency. In the best conditions, the detection efficiency increase reaches 40%. © 2002 American Institute of Physics.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Meteorology and atmospheric physics 1 (1948), S. 270-272 
    ISSN: 1436-5065
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography , Physics
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Meteorology and atmospheric physics 14 (1965), S. 306-312 
    ISSN: 1436-5065
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography , Physics
    Description / Table of Contents: Zusammenfassung Am 21. August 1954 erzeugte eine starke Südwestströmung am Rande eines stationären Kaltlufttropfens über Frankreich in den Schweinzer Alpen einen langsamen Temperaturfall mit ergiebigen Mischungs- und pseudolabilen Instabilitätsniederschlägen. Das Vorrücken der Kaltluft erfolgte in diskontinuierlicher Weise und war von schnellen Druckschwankungen begleitet, die teilweise auf die troposphärische Instabilität zurückzuführen sind.
    Abstract: Summary On August 21, 1954, an intense south-western current produced at the border of a stationary cold air pool over France a slow drop in temperature in the Swiss Alps with abundant precipitations of mixing and pseudo-labile instability. The cold air advanced, discontinuously and was accompanied by rapid pressure variations partly due to tropospherical instability.
    Notes: Résumé Le 21 août 1954, un fort courant du Sud-Ouest en bordure d'un îlot d'air froid stationnaire sur la France provoque une baisse lente de température dans la région des Alpes suisses ainsi que d'abondantes précipitations de mélange et d'instabilité pseudolabile. La progression de l'air froid se fait de façon discontinue et s'accompagne de rapides variations de pression dues en partie à l'instabilité troposphérique.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Meteorology and atmospheric physics 17 (1968), S. 207-214 
    ISSN: 1436-5065
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography , Physics
    Description / Table of Contents: Zusammenfassung Ein chronologisches Studium der Kaltfronten in der französischen Schweiz läßt a) eine schwache Jahresschwankung der Frequenz mit zwei nur schwach ausgedrückten Maxima im Winter und im Sommer, und b) eine bedeutend stärkere Tagesschwankung mit Maxima gegen 6 und 16 Uhr erkennen.
    Abstract: Summary Chronological studies of the cold fronts in the French part of Switzerland reveal a) a feeble annual variation of frequency with two maxima only weakly pronounced in winter and summer, and b) a much larger diurnal variation with two maxima at 6 h and 16 h.
    Notes: Résumé L'étude chronologique des fronts froids en Suisse romande fait apparaître: a) une faible variation annuelle de fréquence à deux maxima très peu prononcés en hiver et en été, et b) une variation diurne beaucoup plus accusée avec deux maxima vers 6 h et vers 16 h.
    Type of Medium: Electronic Resource
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  • 9
    ISSN: 1436-5065
    Source: Springer Online Journal Archives 1860-2000
    Topics: Geography , Physics
    Description / Table of Contents: Zusammenfassung Von der Anzahl der gleichzeitigen Niederschlagstage an zwei Beobachtungsstationen und von der Abweichung ihrer Wahrscheinlichkeit ausgehend, wird eine Methode zum Vergleiche der Niederschlagstypen im synoptischen Sinne entwickelt. Der sogenannte Ähnlichkeitsindex, der zwischen −1 und +1 variieren kann, wird mathematisch definiert. Je nach dem Wert desselben ist die zeitliche Verteilung der Niederschlagstage an zwei Orten gleich (+1), indifferent (0) oder entgegengesetzt (−1). Bei der Anwendung der Methode tritt eine gesetzmäßige Abnahme des Index mit der Entfernung auf. Ein entgegengesetztes Verhalten des Ähnlichkeitsindex beiderseits der Alpen veranschaulicht die Rolle, welche die Alpen bekanntlich als Wetterscheide spielen.
    Abstract: Summary A method of obtaining a synoptic view of the distribution of precipitation (rain- and snowfall) is developed. It is based on the number of days on which precipitation occurs at both of two places more or less distant from each other. A mathematical definition is given of an index of similarity, which latter varies between −1 and +1. These, limiting, figures signify in the case of −1 that precipitation is least likely to occur on any one day at both of two different places, in the case of +1 that it is most likely to occur, and that when the index of similarity is 0 no relation at all can be established for the likelihood of precipitation at both places on the same day. The index shows a sharp decline as the distance between places increases. In general it shows less relationship in regard to the simultaneous occurrence of rain-and snowfall between places lying on opposite sides of the Alps than between places on the same side, showing once more how the Alps act as a weather partition. The results, based on observations at 9 places in Switzerland and 8 in other European countries, are valid for the Temperate Zone; for other climatic regions they may be different.
    Notes: Résumé On développe une méthode basée sur le dénombrement des jours de pluite communs à deux stations données et sur l'écart avec leur probabilité. Une formule simple définit l'indice de similitude de deux régimes pluviaux, indice qui peut varier de −1 à +1 et qui caractérise la plus ou moins grande similitude des distributions chronologiques de la pluie en deux endroits quelconques. L'application de la méthode conduit à établir une loi de décroissance de l'indice avec la distance séparant les stations comparées. Dans la région alpine cette loi présente une anomalie résultant de l'effet orographique.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Surface Science 266 (1992), S. 523-528 
    ISSN: 0039-6028
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
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