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RISS 인기검색어
- 검색키워드
- 저자 : Shang-Long Gao (검색결과 4 건)
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Gao, Chun Yan,Meng, Long-Yue,Piao, Shang Hao,Choi, Hyoung Jin Elsevier 2018 Polymer Vol.140 No.-
<P><B>Abstract</B></P> <P>Conducting polymeric polyaniline hollow spheres (PANI-HS) were fabricated and evaluated as a smart electro-stimuli responsive material, whose both special structure of shorter diffusion length promotes the electron transfer and specific surface area is greatly amplified than solid spheres. The monodisperse polystyrene (PS) seeds were initially synthesized by a facile surfactant-free emulsion polymerization, and then the monomer aniline was adsorbed and polymerized on the sulfonated PS spheres to form the PS/polyaniline (PANI) composites, allowing the PS cores to be removed by a solvent extraction later. The morphology and shell thickness were examined using both scanning electron microscopy and transmission electron microscopy. Fourier transformation infrared spectroscopy affirmed chemical structure of pure PS, PS/PANI and PANI-HS. The dielectric spectra were further analyzed for their electrorheological (ER) characteristics with LCR meter. The homogeneous semi-conducting PANI-HS based ER fluid (10 vol%) exhibited typical ER characteristics according with the conductivity model based on a slope of 1.5.</P> <P><B>Highlights</B></P> <P> <UL> <LI> Hollow polyaniline (PANI-HS) was adopted as an electrorheological (ER) material. </LI> <LI> Its special structure of shorter diffusion length promotes electron transfer. </LI> <LI> PS cores in PS/PANI composite were removed by solvent extraction. </LI> <LI> ER fluid showed typical ER characteristics with a slope of 1.5. </LI> </UL> </P> <P><B>Graphical abstract</B></P> <P>Conducting polyaniline hollow submicron-sized spheres (PANI-HS) were fabricated and evaluated as a smart electro-stimuli responsive material. Polystyrene (PS) seeds were initially synthesized by a facile surfactant-free emulsion polymerization, and then the aniline was adsorbed and polymerized on the sulfonated PS spheres to form the PS/PANI composites, allowing the PS cores to be removed by a solvent extraction later. Their electrorheological behaviors of hollow PANI based ER fluid (10 vol %) were observed using a rotational rheometer at different electric field strengths, showing dramatic electro-stimuli responsive phase transition.</P> <P>[DISPLAY OMISSION]</P>
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A new species of Stibadocerella Brunetti, 1918 from China (Diptera, Cylindrotomidae)
Zhang Bing,Gao Shang,Yang Qi-Cheng,Ren Jin-Long,Yang Ding 한국응용곤충학회 2022 Journal of Asia-Pacific Entomology Vol.25 No.2
Four species of the genus Stibadocerella Brunetti, 1918 were previously known from the world. Here one new species, Stibadocerella shennongensis Zhang & Yang, sp. nov. is reported from Hubei, China. New record Stiba docerella pristina Brunetti, 1918 from Hainan, China is re-described and illustrated. A key to the known species of Stibadocerella is presented. www.zoobank.org/urn:lsid:zoobank.org:pub:45002F67-2C20-4F3C-A543-81F802EA3900.
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A new species of Stibadocerella Brunetti, 1918 from China (Diptera, Cylindrotomidae)
Zhang Bing,Gao Shang,Yang Qi-Cheng,Ren Jin-Long,Yang Ding 한국응용곤충학회 2022 Journal of Asia-Pacific Entomology Vol.25 No.3
Four species of the genus Stibadocerella Brunetti, 1918 were previously known from the world. Here one new species, Stibadocerella shennongensis Zhang & Yang, sp. nov. is reported from Hubei, China. New record Stiba docerella pristina Brunetti, 1918 from Hainan, China is re-described and illustrated. A key to the known species of Stibadocerella is presented. www.zoobank.org/urn:lsid:zoobank.org:pub:45002F67-2C20-4F3C-A543-81F802EA3900.
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Intracellular Polysaccharide and its Antioxidant Activity by Pleurotus citrinopileatus SM-01
Su-Qian Wu,Shang-Long Gao,Hong-Hong Liu,Xin-Yi Sun,Long Hao,Le Jia,Li-Fei Pang,Shou-Hua Jia,Meng-Shi Jia 한국고분자학회 2013 Macromolecular Research Vol.21 No.6
The extraction parameters of intracellular polysaccharide (IPS) from Pleurotus citrinopileatus SM-01mycelia were optimized, and the in vitro and in vivo antioxidant activities of IPS were investigated. The optimum conditions of IPS extraction were predicted to be an ultrasonic treatment time of 664.09 s, precipitation time of 23.03h and pH 7.36, and IPS yield was estimated at 16.13%. The in vitro inhibition effects of IPS at a dosage of 5 g/L on the superoxide anion, 1,1-diphenyl-2-picrylhydrazyl (DPPH) and hydroxyl radicals were 73.96±4.62%, 69.2±4.37%,and 50.75±4.39%, respectively, which were 72.56±5.08%, 22.83±1.94%, and 43.93±3.26% higher than that of butylated hydroxytoluene (BHT), respectively. The reducing power of IPS was 0.9±0.07, 69.81±5.24% higher than that of BHT. The activities of glutathione peroxidase (GSH-Px), superoxide dismutase (SOD), catalase (CAT) and alanine aminotransferase (ALT) in mice blood were 241.38±23.19, 454.95±42.39, 60.32±5.16, and 32.39±2.54 U/mL,respectively, and the malonaldehyde (MDA) level was 9.54±0.72 nmol/mL. The results provided a reference for the large-scale extraction of IPS by P. citrinopileatus SM-01 in industrial fermentation, suggesting that the IPS can be used as a potential antioxidant, which enhances adaptive immune responses.
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