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  • SAGE Publications  (7)
  • 1
    Online Resource
    Online Resource
    SAGE Publications ; 1999
    In:  Advanced Composites Letters Vol. 8, No. 5 ( 1999-09), p. 096369359900800-
    In: Advanced Composites Letters, SAGE Publications, Vol. 8, No. 5 ( 1999-09), p. 096369359900800-
    Abstract: A novel fibre composite consisting of natural vegetable fibre as the reinforcer and plasticised natural vegetable fibre as the matrix was studied. By means of cyanoethylation and chlorination, pine sawdust and chopped sisal were converted into thermoplastics and then compounded with sisal and ramie fibres. The natural fibre composite not only exhibits properties similar to those of conventional fibre composites, but also is characterised by easy processing, enviromental frendliness, low cost and capability of tailoring property due to the physically heterogeneous nature.
    Type of Medium: Online Resource
    ISSN: 2633-366X , 2633-366X
    Language: English
    Publisher: SAGE Publications
    Publication Date: 1999
    detail.hit.zdb_id: 3053419-7
    detail.hit.zdb_id: 2144398-1
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  • 2
    Online Resource
    Online Resource
    SAGE Publications ; 2002
    In:  Journal of Composite Materials Vol. 36, No. 12 ( 2002-06), p. 1505-1526
    In: Journal of Composite Materials, SAGE Publications, Vol. 36, No. 12 ( 2002-06), p. 1505-1526
    Abstract: The factors that influence in-plane mechanical responses and mode I interlaminar fracture toughness of stitched unidirectional sisal/epoxy laminates were studied in this paper. It was found that in-plane strength and stiffness of the laminates were not significantly affected by the stitching threads, while the interlaminar toughness was greatly improved, especially at higher sisal content. Unlike glass fiber reinforced polymer composites, sisal laminates have a rather high tolerance against the damages induced by stitching process. In addition, stitching expanded the fiber bridging zone and determined the R-curve profiles of sisal laminates. Factors including stitching density, diameter and species of stitching thread, continuity of stitching, and modification methods of sisal, were proved to greatly influence the delamination resistance of the laminates.
    Type of Medium: Online Resource
    ISSN: 0021-9983 , 1530-793X
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2002
    detail.hit.zdb_id: 160490-9
    detail.hit.zdb_id: 2081924-9
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  • 3
    Online Resource
    Online Resource
    SAGE Publications ; 2002
    In:  Polymers and Polymer Composites Vol. 10, No. 6 ( 2002-09), p. 407-426
    In: Polymers and Polymer Composites, SAGE Publications, Vol. 10, No. 6 ( 2002-09), p. 407-426
    Abstract: The authors discuss the water absorption behaviour of sisal and its epoxy based composites and the mechanical properties of composites that have been aged in water. In addition, a series of fibre pretreatment techniques, including mercerization, acetylation, cyanoethylation, coupling agent treatment and thermal treatment, which are believed to be able to improve the water resistance of sisal and its composites, have been evaluated. It was found that the water absorption behaviour of sisal composites is controlled mainly by the fibre and the fibre/matrix interfacial characteristics. As a result, appropriate fibre modification to retard water diffusion and enhance interfacial adhesion is necessary if the natural fibre composites are to be used in practical applications.
    Type of Medium: Online Resource
    ISSN: 0967-3911 , 1478-2391
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2002
    detail.hit.zdb_id: 2099644-5
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  • 4
    In: European Journal of Inflammation, SAGE Publications, Vol. 18 ( 2020-01), p. 205873922094262-
    Abstract: Ulcerative colitis (UC) is a chronic inflammatory disease of intestinal tract, and Periplaneta americana has been found to be effective in the treatment for UC. The purpose of the study was to investigate the therapeutic effect of Periplaneta americana extract Ento-A on UC in rats induced by 2,4,6-trinitrobenzene sulfonic acid (TNBS) and to explore its mechanism. The Sprague-Dawley (SD) rats were randomly divided into normal control group; TNBS-treated group; sulfasalazine (SASP) treated group; Ento-A low- (50 mg/kg), medium- (100 mg/kg), and high-dose (200 mg/kg) groups, respectively. The UC model of rats was induced via TNBS. Disease activity index (DAI) was used to evaluate the severity of UC in rats. The macroscopic and microscopic damages of colon were accessed by colon mucosa damage index (CMDI) and histopathological score (HS), respectively. The levels of interleukin-4 (IL-4), interleukin-17 (IL-17), tumor necrosis factor-α (TNF-α), and interferon-γ (IFN-γ) in serum and the contents of myeloperoxidase (MPO), transforming growth factor-β1 (TGF-β1), and epidermal growth factor (EGF) in colonic mucosa were measured by enzyme-linked immunosorbent assay (ELISA). Compared with the normal control group, the TNBS-treated group showed increase in DAI, CMDI, HS, IL-17, TNF-α, IFN-γ as well as MPO and decrease in the levels of IL-4, EGF, and TGF-β1. However, Ento-A-administrated groups reversed the changes in the DAI, CMDI, HS, and the cytokines caused by TNBS. The study indicates that Periplaneta americana extract Ento-A can effectively alleviate the inflammation in TNBS-induced UC of rats, and the mechanism of that may be related to restoring the balance of T helper 1 (Th1)/Th2/Th17/T regulatory (Treg) cytokines.
    Type of Medium: Online Resource
    ISSN: 2058-7392 , 2058-7392
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2020
    detail.hit.zdb_id: 2584683-8
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  • 5
    Online Resource
    Online Resource
    SAGE Publications ; 2004
    In:  Polymers and Polymer Composites Vol. 12, No. 4 ( 2004-05), p. 297-308
    In: Polymers and Polymer Composites, SAGE Publications, Vol. 12, No. 4 ( 2004-05), p. 297-308
    Abstract: To prepare self-reinforced sisal composites, sisal fibers were cleaned, treated with NaOH solution, and then benzylated with benzyl chloride. In this way, the skin layers of the fibers were converted into thermoplastic material while the core of the fiber cells remained unchanged. Under the circumstances of hot pressing, self-reinforced all-plant fiber composites of sisal can be prepared, in which plasticised sisal serves as matrix and the unplasticised cores of the fibers as reinforcement. In this work the effect of the reaction conditions, such as alkalinity, temperature and the extent of benzylation, was studied in detail. The roles of quaternary ammonium salts and γ-ray irradiation treatment on the efficiency of benzylation were also taken into account. In addition, structural characteristics, melt flow and mechanical properties of the modified sisal and their composite sheets were analysed. It was found that a balance between melt processability and the reinforcing effect of the benzylated sisal fibers was required.
    Type of Medium: Online Resource
    ISSN: 0967-3911 , 1478-2391
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2004
    detail.hit.zdb_id: 2099644-5
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  • 6
    In: Clinical Nursing Research, SAGE Publications, Vol. 31, No. 2 ( 2022-02), p. 329-339
    Abstract: To evaluate the current situation and associated factors of informational support for older adults with chronic diseases in transitional care. Study was conducted in five hospitals of five different cities in Jiangsu Province, China. A random cluster sample of 800 older adults with chronic diseases responded to the informational support questionnaire of transitional care survey. Descriptive analysis, t-tests, variance analysis, and stepwise multiple linear regression were used to analyze data. The STROBE statement for observational studies was applied. Total score of ISQTC for older adults with chronic diseases was (44.05 ± 17.21). Marital status, educational level, past occupation, close friends, medical insurance, complications, and exercise habits were significantly correlated with informational support. The level of informational support in transitional care for older adults with chronic diseases was low. Clinical staff should periodically and primarily assess their informational support, help find information resources for those who have low initial informational support, and identify which information they preferred to carry out accurate transitional care.
    Type of Medium: Online Resource
    ISSN: 1054-7738 , 1552-3799
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2022
    detail.hit.zdb_id: 2034682-7
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  • 7
    Online Resource
    Online Resource
    SAGE Publications ; 2001
    In:  Advanced Composites Letters Vol. 10, No. 2 ( 2001-03), p. 096369350101000-
    In: Advanced Composites Letters, SAGE Publications, Vol. 10, No. 2 ( 2001-03), p. 096369350101000-
    Abstract: In the present work slight benzylation of sisal fibre was carried out to prepare natural resource based self reinforced composites. By controlling the degree of benzylation, the outer layer of the ultimate cells was converted into thermoplastic and the inner part maintained the load bearing ability. When these modified fibres were moulded under certain temperature and pressure, the thermoplasticised portion flowed freely and served as matrix, while the unaffected parts in the core can still provide reinforcing effect. Such an all-plant fibre composite is characterised by self-reinforcement, easy processing and low cost.
    Type of Medium: Online Resource
    ISSN: 2633-366X , 2633-366X
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2001
    detail.hit.zdb_id: 3053419-7
    detail.hit.zdb_id: 2144398-1
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