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  • 1
    Electronic Resource
    Electronic Resource
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Physiology 43 (1981), S. 137-139 
    ISSN: 0066-4278
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Medicine , Biology
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Palo Alto, Calif. : Annual Reviews
    Annual Review of Physiology 45 (1983), S. 17-18 
    ISSN: 0066-4278
    Source: Annual Reviews Electronic Back Volume Collection 1932-2001ff
    Topics: Medicine , Biology
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 438 (1984), S. 0 
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
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  • 4
    Electronic Resource
    Electronic Resource
    Oxford, UK : Blackwell Publishing Ltd
    Annals of the New York Academy of Sciences 297 (1977), S. 0 
    ISSN: 1749-6632
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Natural Sciences in General
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  • 5
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] Five experimental groups were established (see Fig. 1). All hosts were adult mice (hpg mutants* 5-6 months old; normal males, 5-8 months). POA grafts were obtained from 16-18-day-old fetuses (crown-to-rump length, 17-21 mm). (For method of grafting see Fig. 1 legend,) Growth rates of grafted ...
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 250 (1972), S. 1131-1134 
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Summary Stress relaxation at mechanical deformations of different kind and size. —Ferry andStratton (3) give a relation between the modification of the relaxation times and the size of a uniaxial deformation. The relation is based on the modification of the free volume resulting from the deformation. In the temperature range of the glass transition, the time-dependent relaxation modulus was measured in the case of several deformations (positive and negative strains) up to 3%. The results are compared with the relation ofFerry andStratton, originally derived only for a deformation of 1%. Obviously the deviation from the exactly linear viscoelastic behaviour is only partially due to the influence of the free volume.
    Notes: Zusammenfassung Ferry undStratton (3) geben eine Beziehung zwischen der Änderung der Relaxationszeiten und der Größe einer einachsigen Deformation an. Dabei wird die durch die Deformation bewirkte Änderung des freien Volumens zugrunde gelegt. An PMMA wurde im Temperaturbereich des Glasüberganges der zeitliche Verlauf des Relaxationsmoduls bei verschiedenen Dehnungen und Stauchungen bis zu einer Größe von 3% gemessen. Die Meßergebnisse werden mit der ursprünglich nur für kleine Deformationen bis zu etwa 1% hergeleiteten Beziehung vonFerry undStratton verglichen. Es zeigt sich, daß die Abweichung vom streng linearen viskoelastischen Verhalten offensichtlich nur zu einem Teil auf den Einfluß des freien Volumens zurückgeführt werden kann.
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    Colloid & polymer science 252 (1974), S. 734-737 
    ISSN: 1435-1536
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Summary Bend-creep-tests were made on specimens of hard poly ethylene and poly vinyl chloride of various rectangular cross sections. Therefore an instrument has been constructed which yields a bending moment constant over the gauge length without longitudinal and transverse forces up to bending angles of 180°. The curvature radius can easily be measured without any disturbing forces. Other authors observed that the lateral contraction is restrained in case of flat steel specimens whereas this could not be observed in case of our materials. According to this, there were no significant discrepancies between the plots of the specimens with different cross sections.
    Notes: Zusammenfassung An Probestäben aus PE-hart und PVC mit verschiedenen rechteckigen Querschnitten wurden Kriechversuche bei Biegebeanspruchung ausgeführt. Das dafür entwickelte Gerat gewährleistet bei Biegewinkeln bis zu 18° ein über die Meßlänge konstantes Biegemoment ohne Längs- und Querkräfte. Der Krümmungsradius läßt sich auf einfache Weise ohne störende Kräfte messen. Nach Literaturangaben ist die Querdehnung bei breiten Stahlproben behindert. Bei den hier wiedergegebenen Messungen an Kunststoffen wurde diese Behinderung nicht gefunden. Dementsprechend ergaben sich auch keine wesentlichen Unterschiede zwischen den Meßkurven zu verschiedenen Querschnittsformen.
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    Journal of inclusion phenomena and macrocyclic chemistry 25 (1996), S. 149-152 
    ISSN: 1573-1111
    Source: Springer Online Journal Archives 1860-2000
    Topics: Chemistry and Pharmacology
    Notes: Abstract The inclusion complexation of methyl (5-(propylthio)-1H-benzimidazol-2-yl) carbamate, albendazole (ABZ) with 2-hydroxypropyl-β-cyclodextrin (HPβCD) in water was investigated with a view to improving the low aqueous solubility of the drug. The combination of albendazole and HPβCD in a molar ratio of 1/10 resulted in a significant increase in the aqeous solublity of the drug, up to 3500 times. Albendazole/HPβCD complexes could be recommended as a parenterally administered formulation because of its good solubility properties and the safety of the cyclodextrin used.
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  • 9
    ISSN: 0933-5137
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Description / Table of Contents: Research into the Determination of the ductility of structural Elements in plant construction by Measurements on model Vessels of near industrial Size  -  Theoretical studies and completion of the exploitation of test resultsThe deformation of pressure vessels with nozzles is investigated at various temperatures. For this purpose, the surface strains at the interesting spots, the increase of volume, and other quantities are measured in dependence on the internal pressure.The stresses are calculated  -  by means of the stress-strain relations for the elastic or plastic strain  -  from the surface strains and the yield strength, and they are shown in diagrams together with the effective strain. Setting the internal pressure and the radii of curvature in the membrane equation yields a linear dependence of the two average normal stresses on each other. By comparison to the calculated stresses it is possible to conclude to the bending moments in the wall.The results coincide with the experimentally observed origins of the cracks. Moreover at various temperatures the deformation of the pressure vessels is compared to the results of uniaxial tensile tests, and the expediency of other tests is discussed.
    Notes: Die Verformung von Druckbehältern mit Stutzen wird bei verschiedenen Temperaturen untersucht. Dazu werden die Oberflächendehnungen an den interessierenden Stellen, ferner die Volumenzunahme und andere Größen in Abhängigkeit vom Innendruck gemessen.Die Spannungen werden nach den Spannungs-Dehnungs-Beziehungen für elastische oder für plastische Beanspruchung aus den Oberflächendehnungen und der Fließgrenze des Werkstoffes berechnet und mit der Vergleichsdehnung zusammen in Diagrammen wiedergegeben. Setzt man den Innendruck und die Krümmungsradien in die Membrangleichung ein, so folgt eine lineare Beziehung zwischen den beiden gemittelten Normalspannungen. Durch Vergleich mit den berechneten Spannungen kann auf die Biegemomente in der Behälterwandung geschlossen werden.Die Ergebnisse stehen im Einklang mit den experimentell beobachteten Ausgangspunkten der Risse. Weiterhin wird bei verschiedenen Temperaturen die Verformung der Druckbehälter mit den Ergebnissen einachsiger Zugversuche verglichen und die Zweckmäßigkeit anderer Prüfverfahren erörtert.
    Additional Material: 22 Ill.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Springer
    Cell & tissue research 186 (1978), S. 393-398 
    ISSN: 1432-0878
    Keywords: β-Lipotropin ; Hypothalamus ; Hypophysial portal capillaries ; Immunocytochemistry
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Summary β-Lipotropin (β-LPH) has been localized in hypothalamus and pituitary of sheep and ox by the immunoperoxidase technique. In both species β-LPH was found in perikarya of arcuate neurons as well as in cells of the anterior and intermediate lobes of the pituitary. A large number of immunoreactive axons were found in the arcuate region; some appeared to innervate other neurons and others projected to portal capillaries. Stained fiber segments were also scattered throughout the hypothalamus. The presence of β-LPH in hypothalamic neurons supports the possibility that brain β-LPH may be a precursor for opiate-like or other peptides which may be involved in neuromodulation or neurohormonal activities.
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