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  • 1
    Monograph available for loan
    Monograph available for loan
    Berlin : Springer
    Associated volumes
    Call number: AWI A11-23-95344
    In: Physics and chemistry in space : Planetology, 18
    Type of Medium: Monograph available for loan
    Pages: IX, 165 Seiten , Illustrationen , 24 cm
    ISBN: 3540506853 , 3-540-50685-3 , 0387506853 , 0-387-50685-3 , 9783642486289
    Series Statement: Physics and chemistry in space : Planetology 18
    Language: English
    Note: Contents 1 Noctilucent Clouds 1.1 Introduction 1.2 How, When and Where Noctilucent Clouds Are Seen 1.3 Amateur Observations 1.4 Cloud Types 1.5 Structure of the Upper Atmosphere 2 History 2.1 Introduction 2.2 The Discovery of the "Shining Night-Clouds" 2.3 Measurements of Noctilucent Clouds 2.4 The Middle Period of Noctilucent Cloud Research 3 Observations from Ground Level 3.1 Introduction 3.2 The Geometry of Twilight Scattering 3.3 Latitude of Observation 3.4 Absorption of Light in the Atmosphere 3.5 Height of Noctilucent Clouds 3.6 Drift Motions 3.7 Wave Structure 4 Spectrophotometry 4.1 Introduction 4.2 Spectroscopic Observations 4.3 Spectrophotometry from Ground Level 4.4 Rocket-Borne Photometers 4.5 Spectrophotometry from Satellites 4.6 Conclusions About Cloud Particle Sizes 5 Polarimetry 5.1 Introduction 5.2 Polarization by Scattering 5.3 Measurement of Polarized Light 5.4 Polarization Measured from Ground Level 5.5 Measurements of Polarization from Rockets 5.6 Conclusions About Cloud Particle Sizes 6 Rocket-Borne Sampling 6.1 Introduction 6.2 Flights over Sweden in 1962 and 1967 6.3 Flights over Sweden in 1970 and 1971 6.4 Flights over Canada in 1968 and 1970 6.5 Collectors Flown by Max-Planck-Institut Researchers, 1968 to 1971 6.6 Conclusions About Cloud Particle Sizes 7 Variation of Occurrence 7.1 Introduction 7.2 Sunspot Cycle 7.3 Seasonal Frequency of Noctilucent Clouds 7.4 Climatology of the Mesosphere 8 Other Observations 8.1 Introduction 8.2 Association with Hydroxyl Airglow Emission 8.3 Association with Aurora and Planetary Magnetic Activity 8.4 Lunar Effects 8.5 Lidar Observations 8.6 Artificial Noctilucent Clouds 8.7 Abnormal Observations 9 Environment of Noctilucent Clouds 9.1 Introduction 9.2 Atmospheric in Temperature 9.3 D-Region 9.4 Dust 9.5 Water Vapour in the Mesosphere 9.6 Radiation 9.7 Rates of Growth 9.8 Nucleation of Ice 9.9 Settling of Particles 9.10 Modelling Noctilucent Clouds by Numerical Simulation 10 The Nature of Noctilucent Clouds 10.1 Introduction 10.2 Formation in Noctilucent Clouds 10.3 Growth of Noctilucent Cloud Particle 10.4 Evaporation of Noctilucent Cloud Particles 10.5 The Relationship Between Polar Mesospheric Clouds and Noctilucent Clouds 10.6 Summary 11 Bibliography A) Before 1900 B) 1900-1950 C) Bibliography since 1950 Appendix 1: Atmospheric Refraction . Appendix 2: Atmospheric Transmission Along Grazing Pays Subject Index Name Index
    Location: AWI Reading room
    Branch Library: AWI Library
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  • 2
    ISSN: 1617-4623
    Keywords: Saccharomyces cerevisiae ; Gene expression ; Cell cycle
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary We have examined the pattern of transcription exhibited by four genes in the dTTP biosynthetic pathway of Saccharomyces cerevisiae. Consistent with the results reported previously by Storms et al. (1984), the TMP1 (or CDC21) gene encoding thymidylate synthase was found to be transcribed in a periodic manner during the cell cycle with maximal mRNA levels occurring just prior to the onset of DNA replication. Three other genes in this pathway DCD1, DUT1 and DFR1 encoding dCMP deaminase, dUTP pyrophosphatase and dihydrofolate reductase, respecitively, exhibited relatively constant levels of transcription throughout the cell cycle. These results, particularly for DFR1, are in marked contrast with those obtained in other eukaryotic systems which have suggested that, in general, genes encoding enzymes involved in DNA precursor synthesis are subject to cell cycle regulation. Thus, periodic transcription is not a property common to all genes involved in DNA replication in this eukaryote.
    Type of Medium: Electronic Resource
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  • 3
    Publication Date: 1999-09-01
    Print ISSN: 0043-1656
    Electronic ISSN: 1477-8696
    Topics: Geosciences
    Published by Wiley
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  • 4
    Publication Date: 1983-08-01
    Print ISSN: 0031-9201
    Electronic ISSN: 1872-7395
    Topics: Geosciences , Physics
    Published by Elsevier
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  • 5
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    Internat. Assoc. of Geomagnetism & Aeronomy
    Publication Date: 2021-03-29
    Description: This manual and instruction book was written by a group of active researchers, both professional and amateur. There are chapters giving practical advice for taking visual observations, photographing the clouds with film or with video equipment. A summary of observations from space is included, as well as comments on the connection between noctilucent clouds, seen from the ground, and the polar mesospheric clouds that so far have been measured only from orbit. Noctilucent clouds are seen in the summer months, shining in the poleward sky at nighttime. Measurements show that the clouds are higher than any others. Lying at a height of 80-85 kilometers, the clouds mark a boundary between meteorology and space physics. This book is beautifully illustrated with photographs, and will help everyone recognize and appreciate these sailors in the summer night.
    Description: manual
    Keywords: 551.5 ; 550 ; TVM 530 ; TVB 420
    Language: English
    Type: monograph , publishedVersion , monograph
    Format: 39 S.
    Format: application/pdf
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