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RISS 인기검색어
- 검색키워드
- 저자 : Shih-Jia Chen (검색결과 5 건)
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Mei-Chen Lin,Ching-Wen Lou,Jan-Yi Lin,Ting An Lin,Shih-Peng Wen,Jia-Horng Lin 한국섬유공학회 2019 Fibers and polymers Vol.20 No.2
This study combines and twists 75D polyester (PET) multi-filaments and polylactic acid (PLA) multi-filaments with twist coefficients of 2, 3, 4, 5, and 6 to form 150D PET/PLA plied yarns. The 0.08-mm-diameter stainless steel (SS) fibers are made into SS braids with a 60-tooth braid gear and a take-up gear with 60, 70, 80, 90, or 100 teeth. PET/PLA plied yarn and SS braids are then combined and electrochemically treated with an electric current of 100, 200, 300, 400, or 500 mA at 60 ℃ for 24 hours, forming the PET/PLA/SS composite bone scaffolds. PET/PLA/SS composite bone scaffolds are observed by scanning electron microscope (SEM) and energy dispersive spectroscope (EDS), and tested for weight increase rate and biocompatibility. The experiment results show that the optimal twist coefficient for PET/PLA plied yarn is 4 and the optimal tooth number on the take-up gear for SS braids is 80. SEM observation result shows that hydroxyapatite (HA) deposits on the surface of PET/PLA/SS composite bone scaffolds and attaches to the PET/PLA plied yarns. Finally, regardless of electric currents, all PET/PLA/SS composite bone scaffolds possess good biocompatibility.
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Construction of hollow waxberry-like rutile-/anatase-TiO2/SnO2 towards enhanced photocatalysis
Changchao Jia,Hsueh-Shih Chen,Ping Yang 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.58 No.-
Hollow waxberry-like rutile- and anatase-TiO2/SnO2 (TiO2@SnO2) hierarchical architecture was fabricated for efficient photocatalysis. A Topotactic synthetic method, including the synthesis of CaTiO3/CaSnO3 precursors and subsequent transformation into TiO2@SnO2, was used. Rutile TiO2 nanorods nearly radial alignment grow on the external surface of the hollow sphere composed of anatase TiO2 and SnO2 nanoparticles. Because the hollow hierarchical structure enhances light harvesting ability and the tightly connected interface among different components improves the electron transfer efficiently, a waxberry-like TiO2@SnO2-5% sample with appropriate phase composition exhibits excellent photocatalytic performance. The sample behaved superior cycle stability.
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Pen Hua Su,Jia Yuh Chen,Ju Shan Yu,Suh Jen Chen,Teng Fu Tsao,Shih Jei Tsai 한국유전학회 2008 Genes & Genomics Vol.30 No.4
Cleidocranial dysplasia (CCD, #119600) is a rare, autosomal dominant bone disease characterized by hypoplastic or aplastic clavicles, wide cranial sutures, supernumerary teeth, short stature, and other skeletal disorders. This disease gene has been mapped to chromosome 6p21 within a region containing CBFA1, a member of the runt family of transcription factors (RUNX2). We report one Taiwanese girl with CCD, with multiple wormian bones, persistent synchondrosis, supernumerary teeth, hypoplasia of clavicles, delayed ossification of pubic bone, and short stature. She also has partial fusion of the left 4th and 5th ribs, and posterior cerebral artery malformation. We performed sequence analysis of the RUNX2 gene, and detected a heterozygous C to G transition mutation at nucleotide 1115 in exon 7, leading to P372R mutation. This is an unreported missense mutation in exon 7 which effected the trausactivation domain of RUNX2.
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Magnetic Property and Structure of Electrodeposited Nickel on a Thin Niobium Film
Huei-Ying Ho,Shih-Jia Chen,Wei-Yan Lin,Hong-Wen Cheng 한국물리학회 2013 THE JOURNAL OF THE KOREAN PHYSICAL SOCIETY Vol.62 No.12
Cyclic voltammetry, chronopotentiometry, atomic force microscopy (AFM), the magneto-opticalKerr effect (MOKE), and X-ray diffraction were used to investigate the magnetic property and thestructure of thin Ni films electrodeposited onto thin Nb films. A constant-current method was usedto grow the Ni films in this study. We found that -Ni(OH)2 coexists with the Ni deposits. The Nigrains favor growing along the polar direction the very early deposition stage; they tend to growin the lateral direction during the steady-state deposition process. The preferred orientations ofthe Ni deposits are fcc (111) and fcc (200); however, the easy axis of the magnetization of the Nideposits is in the in-plane direction. Increasing the deposition current can decrease the coercivity. We used the AFM and MOKE results to determine the mechanism of the growth of the Ni deposits. We found that the growth modes of the Ni deposits in the polar and the lateral directions largelycorresponded to the direct reduction of Ni and the decomposition of -Ni(OH)2, respectively.
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Ping Yang,Xueling Song,Changchao Jia,Hsueh-Shih Chen 한국공업화학회 2018 Journal of Industrial and Engineering Chemistry Vol.62 No.-
Hierarchical ZnO/NiO microstructures with different morphologies were synthesized employing bimetallic Zn/Ni MOFs as the precursor. The MOFs with rambutan- and seaweed-like morphologies were produced using terephthalic acid and polyvinylpyrrolidone. The molar ratio of Zn/Ni plays an important role for the microstructure and capacitance performance of samples. In particular, hierarchical ZnO/NiO hollow microspheres and seaweed microflowers were obtained when the molar ratio of Zn/Ni was 1:2 and 1:1, respectively. The seaweed microflowers exhibited larger specific capacitance and higher rate capability. The composition and unique microstructure result in improved ionic and electronic conductivity and rich electroactive sites for the electrochemical reactions.
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