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  • 1975-1979  (31,025)
  • 1978  (31,025)
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  • 11
    Call number: ZSP-201-78/23
    In: CRREL Report, 78-23
    Type of Medium: Series available for loan
    Pages: vi, 53 Seiten , Illustrationen
    Series Statement: CRREL Report 78-23
    Language: English
    Note: CONTENTS Abstract Preface Nomenclature Conversion factors: Metric (SI) to U.S. customary units of measurement Introduction Selection of experimental approach Previous investigations of effect of freeze-thaw on soil deform ability Selection of laboratory test method Selection of method of field validation tests Field repeated-load plate-bearing tests Test pavements, soils and materials Test procedures and results Resilient modulus of subgrade calculated from field tests Mathematical model Characterization of asphalt concrete Characterization of frozen silt Calculated resilient modulus of silt within the zone of freezing Laboratory repeated-load triaxial tests Specimens, equipment and testing procedures Apparatus Procedures Resilient properties calculated from laboratory tests Calculation methods Asphalt concrete - test results Asphalt concrete - statistical analysis and discussion Silt - test results Silt - statistical analysis Discussion and conclusions Literature cited Appendix A. Repeated-load plate-bearing test results Appendix B. Laboratory repeated-load triaxial test results Appendix C. Regression equation coefficients for resilient modulus and Poisson’s ratio from repeated-load triaxial test data on asphalt concrete and silt Appendix D. Detailed procedures for repeated-load triaxial testing
    Location: AWI Archive
    Branch Library: AWI Library
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  • 12
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-78/8
    In: CRREL Report, 78-8
    Description / Table of Contents: The interaction of a 5.1-GHz transverse electric surface wave with a dielectric slab is experimentally investigated. The wave is initially supported by a dielectric substrate resting upon a metallic ground-plane. A slab, made of the same dielectric material as the substrate and variable in height, is then placed upon the waveguide. The results for a small slab sitting on the substrate showed that the discontinuity was a very inefficient launcher of reflected surface waves. Investigations of these reflections with a trough waveguide showed that, for values of slab height comparable to the exponential decay height of the surface wave, the reflections remain very small. However, as the slab height is increased beyond the decay height, the reflected amplitude approaches the theoretical value for a plane wave reflected from the interface between air and the same dielectric. The results are applicable to surface wave methods of microwave deicing of wings and helicopter rotors.
    Type of Medium: Series available for loan
    Pages: v, 16 Seiten , Illustrationen
    Series Statement: CRREL Report 78-8
    Language: English
    Note: CONTENTS Abstract Preface Summary Introduction Background Objective and procedure Theory of plane surface waves Waveguide design and characteristics Physical apparatus Frequency characteristics Spatial distribution of Ey above the guide Guide wave length Surface wave interaction with a slab discontinuity Experiments with a trough Discussion and conclusions Literature cited
    Location: AWI Archive
    Branch Library: AWI Library
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  • 13
    Monograph available for loan
    Monograph available for loan
    Geneva : World Meteorological Organization
    Associated volumes
    Call number: PIK N 456-92-0663
    In: Compendium of Meteorology
    Type of Medium: Monograph available for loan
    Pages: 126 S.
    Series Statement: Compendium of Meteorology
    Location: A 18 - must be ordered
    Branch Library: PIK Library
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  • 14
    Series available for loan
    Series available for loan
    Hanover, NH : U.S. Army Cold Regions Research and Engineering Laboratory
    Associated volumes
    Call number: ZSP-201-78/13
    In: CRREL Report, 78-13
    Description / Table of Contents: Field observations of the growth fabrics of the fast and near-fast ice along the coasts of the Beaufort and Chukchi Seas show that, at depths of more than 60 cm below the upper ice surface, the sea ice crystals show striking alignments within the horizontal plane. At one site this alignment was well developed at a depth of 15 cm and in all cases the degree of preferred orientation increased with depth, with the strongest orientations occurring at the bottom of the ice sheet. In general the c-axes of the crystals were aligned roughly E-W parallel to the coast. In the vicinity of islands the alignment roughly paralleled the outlines of the islands and in narrow passes between islands the alignment paralleled the channel. Our observations, as well as similar observations made in the Kara Sea by Cherepanov, can be explained if it is assumed that the c-axes of the crystals are aligned parallel to the 'long-term' current direction at the sea ice/sea water interface. The alignments are believed to be the result of geometric selection among the growing crystals, with the most favored orientation being that in which the current flows normal to the (0001) plates of ice that make up the dendritic ice/water interface characteristics of sea ice. It is hypothesized that current flow in this direction reduces the thickness of the solute boundary layer as well as the salinity in the liquid at the interface. This lowered salinity allows crystals in the favored orientation to extend farther into the melt than neighboring crystals with less favored orientations. In addition the current tends to induce a continuous flux of supercooled seawater against the sides of the crystals that extend ahead of the interface.
    Type of Medium: Series available for loan
    Pages: v, 29 Seiten , Illustrationen
    Series Statement: CRREL Report 78-13
    Language: English
    Note: CONTENTS Abstract Preface Introduction Locale and techniques Observations Vertical variations in crystal orientation Regional variations in crystal orientation Summary of observations Causes Initial ice skim Earth’s magnetic field Currents Conclusions and consequences Literature cited
    Location: AWI Archive
    Branch Library: AWI Library
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  • 15
    Monograph available for loan
    Monograph available for loan
    Wageningen : Centre for Agricultural Publ. and Documentation
    Call number: PIK M 370-91-0161 ; MOP 44707 / Mitte
    Type of Medium: Monograph available for loan
    Pages: 175 Seiten , Illustrationen
    Edition: 2., revised and extended edition
    ISBN: 9022006522
    Series Statement: Simulation monographs
    Language: English
    Note: Contents 1 Introduction 1.1 Purpose 1.2 Some terminology 1.3 Electrical analogues 1.4 State determined systems 1.5 Simulation languages 2 Exponential growth 2.1 Analytical and numerical integration 2.2 Simulation 2.3 Time constant and time interval of integration 2.4 Integration method and time interval 3 The growth of yeast 3.1 Description of the system 3.2 Relational diagrams 3.3 Simulation 3.4 Logistic growth 4 Interference of plants 4.1 Replacement series 4.2 Density of sowing 4.3 Simulation of plant interference 4.4 Further modelling aspects 4.4.1 The INDEX and MACRO feature 4.4.2 The INITIAL and DYNAMIC section 5 Growth and competition of Paramecium 5.1 Description of the system 5.2 A simulation program 5.3 Preliminary estimation of parameters 5.4 Final determination of parameters 5.5 Stochastic aspects 5.6 The programming of probability functions 6 Modelling of development, dispersion and diffusion 6.1 Introduction 6.2 Physiological age and development stage 6.3 Demographic models 6.3.1 Age-classes 6.3.2 Errors of approximation 6.3.3 The matrix method 6.4 Germination models 6.4.1 Boxcar train without dispersion 6.4.2 Boxcar train with constant relative dispersion 6.4.3 Boxcar train with controlled dispersion 6.4.4 Refinements 6.5 The flow of heat in soils 7 Growth and development of Helminthosporium maydis 7.1 Introduction 7.2 The weather 7.3 Appearance and growth of lesions 7.4 Sporophore or stalk formation 7.5 Sporulation of green stalks 7.6 Sporulation of dried stalks 7.7 Dispersal of spores 7.8 Germination of spores and penetration of germtubes 7.9 Timing, initialization and output organization 7.10 Results and sensitivity analyses 8 Population models for fruit-tree red spider miteand predatory mites 8.1 Fruit-tree red spider mite 8.2 Predatory mite, Amblyseius potentillae 8.3 Relations between predator and prey 8.4 Preference as a competitive process 8.5 Verification 9 Solutions of the exercises References Appendix A Appendix B Index
    Location: A 18 - must be ordered
    Location: MOP - must be ordered
    Branch Library: PIK Library
    Branch Library: GFZ Library
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  • 16
    Call number: SR 90.0008(77-19)
    In: Paper
    Type of Medium: Series available for loan
    Pages: 17 S.
    ISBN: 0660015188
    Series Statement: Paper / Geological Survey of Canada 77-19
    Language: English
    Location: Lower compact magazine
    Branch Library: GFZ Library
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  • 17
    Call number: SR 90.0008(77-18)
    In: Paper
    Type of Medium: Series available for loan
    Pages: 44 S.
    ISBN: 0660015137
    Series Statement: Paper / Geological Survey of Canada 77-18
    Language: English
    Location: Lower compact magazine
    Branch Library: GFZ Library
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  • 18
    Series available for loan
    Series available for loan
    Ottawa : Geological Survey of Canada
    Associated volumes
    Call number: SR 90.0008(78-21)
    In: Paper
    Type of Medium: Series available for loan
    Pages: 27 S.
    ISBN: 0660100304
    Series Statement: Paper / Geological Survey of Canada 78-21
    Language: English
    Location: Lower compact magazine
    Branch Library: GFZ Library
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  • 19
    Call number: SR 90.0008(77-9)
    In: Paper
    Type of Medium: Series available for loan
    Pages: 21 S.
    ISBN: 066001520X
    Series Statement: Paper / Geological Survey of Canada 77-9
    Language: English
    Location: Lower compact magazine
    Branch Library: GFZ Library
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  • 20
    Series available for loan
    Series available for loan
    Helsinki
    Associated volumes
    Call number: SR 90.0086(87)
    In: Veröffentlichungen des Finnischen Geodätischen Institutes = Suomen Geodeettisen Laitoksen Julkaisuja = Publications of the Finnish Geodetic Institute
    Type of Medium: Series available for loan
    Pages: 49 S.
    ISBN: 9517110502
    Series Statement: Veröffentlichungen des Finnischen Geodätischen Institutes 87
    Language: English
    Location: Lower compact magazine
    Branch Library: GFZ Library
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