著者

Yan Yang Shozo Nakamura Baochun Chen Takafumi Nishikawa

出版者

公益社団法人 土木学会

雑誌

構造工学論文集 A (ISSN:1881820X)

巻号頁・発行日

vol.58A, pp.777-784, 2012 (Released:2013-04-19)

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China timber arch bridge is a special bridge type, in which the arch ring is woven from two polygonal arch systems. There are more than 100 such bridges survived in Fujian and Zhejiang Provinces. Its traditional construction technology handed down from ancient to today generation by generation through oral teaching has been listed in the Urgent Safeguarding List of Intangible Cultural Heritage by UNESCO in 2009 because it is now at a risk of disappearing. To record down the technique is one of the key issues to preserve the intangible cultural heritage. This paper gives the general description of China timber arch bridges and discusses their traditional construction technology.

著者

Hiroshi INOUE Lan LAN Zhengjian KE Yan YANG Feng ZHENG Dan MAO Seiji GODA

出版者

The Japanese Society for Dental Materials and Devices

雑誌

Dental Materials Journal (ISSN:02874547)

巻号頁・発行日

vol.41, no.1, pp.159-166, 2022-01-25 (Released:2022-02-01)

参考文献数

65

被引用文献数

1

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The aim of this study was to investigate the effects of surface reaction-type pre-reacted glass-ionomer (S-PRG) filler eluate on Matrix metalloproteinase (MMP)-1 and MMP-3 secretion by human gingival fibroblasts (HGF). The S-PRG filler eluate contains 6 ions (F, Na, Al, B, Sr and Si) released from the S-PRG filler. The S-PRG filler eluate stimulation induced a slight secretion of MMP-1 and MMP-3 by HGF. It also enhanced the phosphorylation of p38 and ERK. The increase in MMP-1 and MMP-3 secretion by the inflammatory cytokine TNF-α was suppressed by the S-PRG filler eluate. TNF-α-induced increases in the phosphorylation of ERK were slightly enhanced by S-PRG filler eluate. These findings may prompt the development of new therapeutic agents for oral inflammation with materials composed of S-PRG filler eluate.

著者

Yan YANG LiBin YE JingSong ZHANG YanFang LIU QingJiu TANG

出版者

Japan Society for Bioscience, Biotechnology, and Agrochemistry

雑誌

Bioscience, Biotechnology, and Biochemistry (ISSN:09168451)

巻号頁・発行日

vol.73, no.1, pp.134-139, 2009-01-23 (Released:2009-01-23)

参考文献数

25

被引用文献数

34

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PISP1, a heteropolysaccharide isolated from fruiting bodies of Phellinus igniarius by hot aqueous extraction and purified by DEAE-Sepharose anion-exchange and gel filtration chromatography, is composed of fucose, galactose, mannose, and 3-O-Me-galactose in a ratio of 1:2:1:2. Methylation, monosaccharide analysis, and NMR studies (1H NMR, 13C NMR, COSY-45°, TOCSY, ROESY, HSQC, and HMBC) revealed that PISP1 had a backbone consisting of 1,6-disubstituted-3-O-Me-α-D-galactopyranosyl residue, 1,3,6-trisubstituted-α-D-manopyranosyl residue, 1,4-disubstituted-α-D-galactopyranosyl residue, and 1,2-disubstituted-α-D-galactopyranosyl residue, and had a 1-substituted-α-L-fucopyranosyl terminal attached to O-3 of a manopyranosyl residue. Preliminary bioactivity tests conducted in vitro revealed that PISP1 stimulated the proliferation of mouse spleen lymphocytes.