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中国抗癌协会神经肿瘤专业委员会第八届学术会议

作者： Seok-Gu Kang Hyun-Su Mok Hyun-Do Shin Yoon-Kyung Park Na-Ri Park Youn Soo Lee yongkil hong Department of Neurosurgery The Catholic University of Korea College of MedicineSeoul St.Mary's Hospital

Object We have proved that the existence of glioma stroma mesenchymal stem cells（GS-MSCs）,which are one of components of glioma ***-MSCs may represent non-neural stem cells that act as an important source of mesenchymal elements,particularly during the growth of *** tried to investigate the biological effect of GS-MSCs on glioma cancer stem cells（gCSCs）.We hypothesized that GS-MSCs increase the proliferation of *** We could isolate human GS-MSCs and human gCSCs from human glioma *** gCSCs were co-cultured with human *** vitro proliferation characteristics were evaluated between gCSCs alone and gCSCs co-cultured with *** also investigated the changes of gCSCs protein before and after GS-MSCs *** we created mouse orthotopic glioma xenograft with gCSCs and gCSCs after coculturing with *** analyzed the survival,tumor volume,vessel formation,and proliferation about mouse orthotopic glioma xenografts between two groups（gCSCs alone and gCSCs after co-culturing with GSMSCs） by immunofluorescent *** After gCSCs were co-cultured with GS-MSCs,proliferation activity of gCSCs increased 4 times more than gCSCs *** Akt pathway related protein expression was increased when gCSCs were co-cultured with *** co-culturing gCSCs with GS-MSCs,tumor volume,PCNA expression,and vessel density were increased and survival time was *** together,GS-MSCs change biological characteristics of gCSCs to become more aggressive *** Our results indicated that GS-MSCs are able to change biological characteristics of gCSCs to become more aggressive *** the first time,we have successfully proved the biological effect of human GSMSCs on human gCSCs in vitro and in ***-MSCs may represent non-neural stem cells that act as an important source of mesenchymal elements,particularly during the growth of gliomas.

关键词： glioma glioma cancer stem cells mesenchymal stem cells proliferation stroma cells survival

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Color Enhancement by Diffusion of Beryllium in Dark Blue Sapphire

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光谱学与光谱分析 2016年第5期36卷 1623-1628页

作者： Kyungjin Kim yongkil Ahn Division of Crafts Design Kongju National University 56 Gongjudaehak-Ro Gongju-Si Chungnam Province 314-701 Republic of Korea Department of Materials Science and Engineering Hanyang University 17 Haengdang-dongSeongdong-gu Seoul 133-791 Republic of Korea

Diffusion of beryllium was performed on dark blue sapphire from China and *** samples were heated with beryllium as a dopant in a furnace at 1 600℃ for 42 hin *** beryllium diffusion,samples were analyzed by UV-Vis,FTIR,and WD-XRF *** heat-treatment with Be as a catalyst,the irons of the ferrous state were changed to the ferric ***,reaction of Fe^(2+)/Ti^(4+) IVCT was *** absorption peaks at 3 309cm^(-1) attributed to OH radical were disappeared completely due to carry out heat ***,the intensity of absorption band was decreased in the visible ***,decreased absorption band in the vicinity of 570 nm was responsible for the lighter blue ***,we confirmed that the dark blue sapphires from China and Australia were changed to vivid blue.

关键词： Blue sapphire Beryllium Diffusion UV-Vis FTIR WD-XRF spectroscopy

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Irradiation of Tourmaline and Identification

Irradiation of Tourmaline and Identification

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2013中国珠宝首饰学术交流会

作者： Jongwan Park Sora Shin yongkil Ahn Jingyo Seo Hee Yull Park Department of Materials Science and Engineering Hanyang University

Minerals of the tourmaline group are present in various geological contexts,and can be found in igneous,metamorphic,metasomatic,and sedimentary *** having the formula of XYZ(BO)SiO(OH,O)(OH,F)exhibits lots of varieties in color and composition,as shown in Fig *** has various colors depending on the transition metals present as *** colored tourmalines from Antandrokomby,Madagascar were

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