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  • SAGE Publications  (2)
  • 1990-1994  (2)
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  • SAGE Publications  (2)
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  • 1990-1994  (2)
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  • 1
    Online Resource
    Online Resource
    Light Induced Phase Transition of Poly(N-isopropylacrylamide-co-chlorophyllin) Gels
    SAGE Publications ; 1994
    In:  Journal of Intelligent Material Systems and Structures Vol. 5, No. 1 ( 1994-01), p. 112-116
    Details
    In: Journal of Intelligent Material Systems and Structures, SAGE Publications, Vol. 5, No. 1 ( 1994-01), p. 112-116
    Abstract: ABSTRACT: Transducers that enable the direct utilization of energy derived from sunlight have long been sought after. Such systems could be used as actuators, artificial muscles, separators, switches, sensors, memories, etc. In this paper, some properties of visible light-induced phase transitions of poly(N isopropylacrylamide-co-chlorophyllin) gels are presented, which include the dependence of diameter on the light intensity, the transmittance of light, and the swelling and shrinking kinetics. The phase transitions of these gels can be understood in terms of the increased temperature in the immediate vicinity of polymer chains subjected to local heating due to the absorption and sub- sequent thermal dissipation of light energy. The results are described semi-qualitatively by making use of a simple phenomenological model. A set of the phenomena presented here is one of the ex- amples of how to add intelligence to functional polymer gels using volume phase transition and its related phenomena.
    Type of Medium: Online Resource
    ISSN: 1045-389X , 1530-8138
    URL: Article
    DOI: 10.1177/1045389X9400500113
    Language: English
    Publisher: SAGE Publications
    Publication Date: 1994
    detail.hit.zdb_id: 2088313-4
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    Online Resource
  • 2
    Online Resource
    Online Resource
    The Differentiation of Polyps and Their Mucosal Ultrastructure
    SAGE Publications ; 1990
    In:  American Journal of Rhinology Vol. 4, No. 5 ( 1990-09), p. 159-162
    Details
    In: American Journal of Rhinology, SAGE Publications, Vol. 4, No. 5 ( 1990-09), p. 159-162
    Abstract: This paper reported both ultrastructural and biochemical studies of nasal polyps from 32 patients: 5 with an aspirin-induced asthma; 14 allergic patients with rhinitis; and 13 nonallergic patients with negative skin tests against the major inhalant allergens. The results of the studies have clearly shown that there are two different types of nasal polyps, neutrophil-dominant polyps and eosinophil-dominant polyps, and both leukocytes play a major role as important effector cells in the formation of nasal polyps. Cytotoxic effector molecules from both leukocytes initiate the connective tissue damage of the capillary basement membrane, bringing about enormous tissue edema, with broad disruptions of the epithelial lamina, causing polyp formation.
    Type of Medium: Online Resource
    ISSN: 1050-6586 , 1539-6290
    URL: Article
    DOI: 10.2500/105065890782009433
    RVK:
    XA 20278
    Language: English
    Publisher: SAGE Publications
    Publication Date: 1990
    detail.hit.zdb_id: 2083922-4
    detail.hit.zdb_id: 2554548-6
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