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  • 1
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Clinica Chimica Acta 10 (1964), S. 470-472 
    ISSN: 0009-8981
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Clinica Chimica Acta 13 (1966), S. 278-284 
    ISSN: 0009-8981
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Clinica Chimica Acta 15 (1967), S. 331-335 
    ISSN: 0009-8981
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Amsterdam : Elsevier
    Clinica Chimica Acta 12 (1965), S. 236 
    ISSN: 0009-8981
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 5
    Electronic Resource
    Electronic Resource
    Springer
    European archives of psychiatry and clinical neuroscience 22 (1891), S. 141-159 
    ISSN: 1433-8491
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Type of Medium: Electronic Resource
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  • 6
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Polyvinylidene fluoride (PVDF), in homogeneous blends with an amorphous polymer under specific conditions, forms crystals with a tree-like architecture. Tree-like crystals have a loose fractal structure of crystalline branches which are impregnated with the amorphous polymer. In a previous study, this spectacular morphology was investigated in blends of PVDF and a random copolymer of styrene and methylmethacrylate (SMMA, 13% wt/wt styrene) by light microscopy. The crystal growth was interpreted in terms of a rate competition of crystallization and interdiffusion. The submicroscopic structure of tree-like PVDF spherulites has now been characterized by atomic force microscopy. Surface profiles were prepared by etching PVDF/SMMA blend films with toluene. The tree-like spherulites proved to be less disordered than expected. Their core consists of a compact array of lamellae, the planes of which are periodically twisted, producing a ring pattern. Near the crystallizing front, branches grow, separated from each other, into the amorphous phase. They are internally as compact as the core, but are covered by a loose fur of disordered lamellae. The tree-like appearance of these crystals comes from frequent splitting of the branches into twigs. Crystallographic bifurcation as in dendritic crystals was not observed. At interfaces between two tree-like crystals, the lamellae form patterns of backfolding. © 1998 Chapman & Hall
    Type of Medium: Electronic Resource
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  • 7
    ISSN: 1573-5052
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Description / Table of Contents: Zusammenfassung Zehn Aufnahmen von jeder Standortsklasse (arm, mittel, gut) hinsichtlich des Wachstums von Populus grandidentata auf drei verschiedenen podsolierten Böden in West Cheboygan County, Michigan, 14 Meilen südlich der Mackinacstrasse werden vorgelegt. Eine phytosoziologische Tabelle erweist, dass die ausschliesslichen Differentialarten die Pflanzengesellschaften der armen Standorte von jenen der guten unterscheiden. Einige Arten der beiden Gruppen haben sich aus früheren Sukzessionsstufen erhalten, während einige andere als Eindringlinge aufzufassen sind. Der Mittelstandortsklasse fehlen die Differentialarten. Die Pflanzengesellschaften der armen Standortsklasse entwickeln sich zum Pinus resinosa-P. strobus-Wald und zum Quercus rubra-Wald, Gesellschaften der guten Standortsklasse zum Acer-Fagus-Wald einer mesophytischen Gesellschaft, die für den „nördlichen Laubwald” den Regionalklimax darstellt. Mediumstandortsbestände können sich entweder zu den Pinus-Gesellschaften oder aber zu der Acer-Fagus-Gesellschaft (meistens zu letzterer) entwickeln.
    Abstract: Résumé Dix relevés de 20 x 20 m. ont été faits dans chacune des trois catégories (pauvre, moyenne et bonne) de sites de rapportant à la croissance de Populus grandidentata sur trois soils podsolizés dans la partie occidentale du Comté de Cheboygan (Michigan), 14 miles au Sud du Détroit de Mackinac. Le tableau phytosociologique montre que les espèces différentielles exclusives distinguent nettement la végétation des sites pauvres de celle des bons sites. Dans les deux groupes, quelques espèces des étapes de l'évolution précédente se maintiennent tandis que d'autres s'installent, ébauchant une évolution ultérieure. La végétation des sites moyens ne possède pas d' espèces différentielles. La végétation des sites pauvres se développe vers la forêt de Pinus resinosa — P. strobus et la forêt de Quercus rubra-Pinus. La végétation des bons sites se développe vers la forêt d' Acer-Fagus, association caractéristique du climax regional („northern hardwoods”). La végétation des sites moyens se développe soit vers les associations de Pinus ou plus souvent vers l'association d' Acer-Fagus.
    Notes: Summary Ten 20×20 m plots were surveyed in each of three site classes (poor, medium, and good) for Populus grandidentata growth on three different podzolized soils in western Cheboygan County, Michigan, 14 miles south of the Straits of Mackinac. A phytosociological table shows that exclusive differential species distinguish communities of the poor sites from those of the good sites. In both groups some species are persistent from earlier stages of succession and others are invading species responsible for more recent succes sional change. The medium site class lacks differential species. Poor-site stands are developing toward Pinus resinosa-P. strobus forest and Quercus rubra-Pinus forest. Good-site stands are developing toward Acer-Fagus forest, a mesophytic community characteristic of the “northern hardwoods” regional climax. Medium-site stands have potentialities for development toward either the Pinus communities or the Acer-Fagus community, but predominantly in the direction of the latter.
    Type of Medium: Electronic Resource
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