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  • 1
    Electronic Resource
    Electronic Resource
    EVALUATION OF THE TEXTURAL PROPERTIES OF JAPANESE PEAR (2000)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of texture studies 31 (2000), S. 0 
    Details
    ISSN: 1745-4603
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: The texture of Japanese pear (Pyrus serotina Rehder var. culta ‘Housui') during fruit enlargement and ripening was evaluated. From the plate compression test, only the deformation ratio, modulus of elasticity, and relaxation were the interpretable textural indices for the Japanese pear. From the puncture test, interpretable textural indices were the rupture force, deformation at the rupture point, toughness, average firmness, initial firmness, apparent modulus of elasticity, bioyield force, penetrating force and penetrating energy in the flesh. The skin of the Japanese pear contributed 70–80% of the firmness of the fruit. As the fruits enlarged, the strain decreased, the elasticity increased, the fruit skin was more prone to mechanical damage, the fruit flesh became softer, and firmness and rigidity of the whole fruit was reduced.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-4603.2000.tb01027.x
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  • 2
    Electronic Resource
    Electronic Resource
    RELATIONSHIP BETWEEN THE TEXTURE AND PECTIN CONSTITUENTS OF JAPANESE PEAR (2000)
    Oxford, UK : Blackwell Publishing Ltd
    Journal of texture studies 31 (2000), S. 0 
    Details
    ISSN: 1745-4603
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Process Engineering, Biotechnology, Nutrition Technology
    Notes: The relationship between texture and pectin constituents and some related compounds of the Japanese pear (Pyrus serotina Render var. culta ‘Housui') during fruit enlargement and ripening was studied. The modulus of elasticity, deformation ratio, and relaxation value from the flat plate compression test, and all the properties from the puncture test were affected by the pectin constituents, alcohol insoluble solids, and soluble solids. The hardness and deformation of the fruit obtained from the plate compression test might depend on the combination of the alcohol insoluble solids in fresh weight and weight of the fruit. The oxalate soluble pectin both in alcohol insoluble solids and in fresh weight affected the fruit texture more than the water soluble pectin. The solubitization of nonsoluble pectin to water soluble pectin appeared to influence the textural properties more than that of the nonsoluble pectin to oxalate soluble pectin. The puncture test was superior in analyzing the textural properties of the Japanese pear fruits with regard to changes in the pectin constituents.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1745-4603.2000.tb01028.x
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  • 3
    Electronic Resource
    Electronic Resource
    Photocontact dermatitis from ketoprofen with an unusual clinical feature (1995)
    Oxford, UK : Blackwell Publishing Ltd
    Contact dermatitis 32 (1995), S. 0 
    Details
    ISSN: 1600-0536
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1600-0536.1995.tb00848.x
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Presence of abnormally high incidences of sister chromatid exchanges in three successive cell cycles in Bloom's syndrome lymphocytes (1985)
    Springer
    Chromosoma 93 (1985), S. 87-93 
    Details
    ISSN: 1432-0886
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology , Medicine
    Notes: Abstract The frequencies of sister chromatid exchanges (SCEs) were examined in phytohaemagglutinin-stimulated blood lymphocytes of a normal individual, a Bloom's syndrome heterozygote (bl/+), and two Bloom's syndrome homozygotes (bl/bl). To determine the baseline SCE frequencies, lymphocytes were cultured with various concentrations of 5-bromodeoxyuridine (BrdUrd) for two cell cycles. The incidence of SCEs per two cell cycles inbl/bl lymphocytes levelled off at BrdUrd concentrations below 10 μg/ml while that in normal andbl/+ lymphocytes stayed constant below 7.5 μg/ml. The baseline SCE frequency in bl/bl cells was ten times higher than that in normal andbl/+ cells. At BrdUrd concentrations above 15 μg/ml, SCEs inbl/bl cells were induced more frequently than in normal andbl/+ cells. These results indicate that at low concentrations BrdUrd has a minimal effect on the induction of SCEs in all individuals, while at higher concentrations the BrdUrd incorporated inbl/bl cells has a larger effect than that in normal andbl/+ cells. To elucidate the effect of BrdUrd incorporated into the daughter and parental DNA strands on SCE induction, SCEs occurring during each cell cycle were examined separately in three-way or two-way differentially stained, third-cycle metaphases. The incidence of SCEs detected in each cell cycle at 5 μg/ml BrdUrd was constant in all individuals and the rates of SCEs in each cell cycle inbl/bl cells were remarkably higher than those observed in normal andbl/+ cells. These findings strongly indicate that most of the abnormally increased SCEs in thebl/bl cells used in our study occurred independently of any effect of BrdUrd incorporated into both the daughter and parental DNA strands. In addition, an abnormal response ofbl/bl cells to BrdUrd was not found for cell cycle progression or chromosomal aberration induction. Thus, the bl/bl cells did not exhibit an abnormal hypersensitivity to BrdUrd. From these results, it seems quite probable that the abnormally increased SCEs in thebl/bl lymphocytes used here were spontaneous.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01259450
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  • 5
    Electronic Resource
    Electronic Resource
    Morphology-Properties relationship of a ternary polymer alloy (1992)
    Stamford, Conn. [u.a.] : Wiley-Blackwell
    Polymer Engineering and Science 32 (1992), S. 1863-1869 
    Details
    ISSN: 0032-3888
    Keywords: Chemistry ; Chemical Engineering
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Chemistry and Pharmacology , Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics , Physics
    Notes: A ternary alloy of polyamide-6 (PA), poly(phenyleneether) (PPE), and rubber has a three-phase structure, in which PPE particles with rubber inclusions are dispersed in a PA matrix. This is an excellent thermoplastic with high impact strength and high heat resistance. To understand the morphology-properties relationship, we undertook a two-dimensional finite element method (FEM) analysis on the deformation mechanism of the ternary alloy. A three-phase model was constructed so that five hybrid particles of PPE-shell and rubber-core were embedded in the PA matrix. When the model was deformed at room temperature, the rubber domain induced yielding of the PPE-shell and the PA-matrix and at large strains the yielded zone expanded to pervade the whole space. This suggests that the toughening mechanism is essentially the same as in the binary alloy of PA and rubber (rubber-toughened PA). At higher temperatures (e.g., at 100°C) the stress concentration occurred not only in the PA matrix but also in the PPE-shell. It implies that the PPE-shell is highly responsible for bulk deformation, even though it is part of the dispersed phase. At high temperatures, the rigidity of PPE affects the alloy bulk rigidity so that the ternary system exhibits high heat resistance.
    Additional Material: 11 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/pen.760322409
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