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Preparation and Electromagnetic Absorbing Properties of High Aspect Ratio Iron-based Materials

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Preparation and Electromagnetic Absorbing Properties of High...

Steam Reforming of Ethanol over CoMg/SBA-15 Catalysts

第十一届海峡两岸超微颗粒学术研讨会暨中国颗粒学会超微颗...

作者： Yuh-Jing chiou Ruey-Bin Yang Pei-Jung Chang Hong-Ming Lin Chung-Kwei Lin Department of Chemical Engineering Tatung University Department of Aerospace and Systems Engineering Feng Chia University Research Center of Digital Oral Science and Technology Taipei Medical University Department of Materials Engineering Tatung University School of Dental Technology Taipei Medical University

Radar absorbing material(RAM),also known as microwave absorption material,is widely used to diminish electromagnetic reflection and *** electromagnetic properties include complex permittivity and permeability and its combination determines the electromagnetic wave absorption ability of a *** prepared by carbonyl iron(or related ferrites)dispersed in

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Modern Research in Catalysis 2013年第2期2卷 13-21页

作者： Josh Y. Z. chiou Shih-Yi Yang Chin-Liang Lai Hsuan-Ying Kung Chih-Wei Tang Chen-Bin Wang Department of Chemical and Materials Engineering Chung Cheng Institute of Technology National Defense University Taoyuan Chinese Taipei Department of General Education Army Academy Taoyuan Chinese Taipei

Hydrogen production through steam reforming of ethanol (SRE) over Mg modified Co-based catalysts supported on mesoporous SBA-15 was studied herein to evaluate the catalytic activity and the behavior of coke deposition. The CoyMgx/SBA-15 catalysts are obtained according to the steps of consecutive impregnation of Mg (x = 5 and 10 wt%) to be incorporated on SBA-15 and then follow the loading of Co (y = 10 and 20 wt%) using the incipient wetness impregnation method. The catalysts are characterized by using X-ray diffraction (XRD), temperature programmed reduction (TPR), transmission electron microscopy (TEM) and BET techniques. Also, the spent catalysts are further characterized by using XRD and TEM. The catalytic activity of the SRE is evaluated in a fixed-bed reactor under 22,000 h-1 GHSV and with an H2O/EtOH molar ratio of 13. All the CoyMgx/SBA-15 catalysts present a mesoporous structure, even after the SRE reaction. The optimum catalyst of Co20Mg5/SBA-15-H650 comes from the high loading of Co and high reduction temperature pretreatment, which show a high catalytic activity and stability at 550°C with a hydrogen yield (YH2) up to 5.78 and CO selectivity around 3.10%.

关键词： SBA-15 Steam Reforming of Ethanol Cobalt Magnesium

天然类黄酮分子中羟基基团在兔眼缺血损伤后眼球血流量和视网膜功能恢复的作用

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国际眼科杂志 2004年第1期4卷 1-6页

作者： Young-HyunPark Xin-RongXu GeorgeC．Y.chiou 美国得克萨斯州A＆M大学医学院医学药理与毒理学科眼科药理学研究所

目的:我们最近已报告有些天然类黄酮可影响眼球血流量.为阐明黄酮分子中羟基(OH)的作用,选择黄酮含1-4个羟基基团、附有或无糖、有或无甲氧基团,观察对眼球血流量和视网膜功能恢复的作用.方法:采用彩色微珠技术测定兔眼球血流量,视网膜... 详细信息

目的:我们最近已报告有些天然类黄酮可影响眼球血流量.为阐明黄酮分子中羟基(OH)的作用,选择黄酮含1-4个羟基基团、附有或无糖、有或无甲氧基团,观察对眼球血流量和视网膜功能恢复的作用.方法:采用彩色微珠技术测定兔眼球血流量,视网膜电图监测视网膜功能的恢复.结果:黄酮含4个游离的羟基基团(毛地黄黄酮),似乎有增加眼球血流量和促进视网膜功能恢复的作用.含3个羟基基团(5,7,4′-三羟基黄酮)可迅速增加眼球血流量和恢复视网膜功能.少于2个羟基基团的黄酮(Chrysin),对眼球血流量无增加作用.黄酮附着有芦丁糖,并含2个游离的羟基和甲氧基团(Diosmin),对眼球血流量和视网膜功能均无作用,但是,含儿茶酚的黄酮附着有葡萄糖时(毛地黄黄酮-7-糖苷),会影响眼球血流量.黄酮附着有甲氧基,并含2个游离羟基基团(Acacetin),均影响缺血损伤后眼球血流量和视网膜功能的恢复.结论:黄酮分子中羟基基团数量的增加,可显著提高眼球血流量和促进视网膜功能的恢复,而在黄酮分子B环上有7个羟基基团和儿茶酚基团时,其作用最显著.

关键词：类黄酮分子羟基基团兔眼缺血损伤眼球血流量视网膜功能儿茶酚基团

胼酞嗪对眼血流和激光诱导的脉络膜新生血管及体外培养的内皮细胞的影响(英文)

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国际眼科杂志 2008年第12期8卷 2359-2363页

作者：江伟邱春亿美国德州大学城德州农工大学健康科学中心医学院眼科药理研究所

目的:研究胼酞嗪对兔脉络膜血流和激光诱导的鼠脉络膜新生血管及人脐静脉内皮细胞管状结构形成的影响。方法:雌性新西兰白兔左眼眼内压升高至40mmHg后,滴入10g/L胼酞嗪滴眼液,采用彩色微球技术测量眼血流变化。用Nd:YAG激光诱导雄性Brow... 详细信息

目的:研究胼酞嗪对兔脉络膜血流和激光诱导的鼠脉络膜新生血管及人脐静脉内皮细胞管状结构形成的影响。方法:雌性新西兰白兔左眼眼内压升高至40mmHg后,滴入10g/L胼酞嗪滴眼液,采用彩色微球技术测量眼血流变化。用Nd:YAG激光诱导雄性Brown Norway大鼠至Bruch膜破裂,而后分别予生理盐水或5,10和20g/L胼酞嗪滴眼液点眼,3次/d,连续4wk。采用眼底荧光血管造影和脉络膜平片测量新生血管的面积。此外亦用不同浓度的胼酞嗪作用于培养之人脐静脉内皮细胞并探讨对其管状结构形成的影响。结果:10g/L胼酞嗪滴眼液滴入眼内压为40mmHg的兔眼30,60min后,脉络膜血流明显增加。眼底荧光血管造影和脉络膜平片测量均显示,经过4wk药物治疗,5,10,20g/L胼酞嗪滴眼液均明显抑制了鼠眼CNV的形成。3～30mg/L胼酞嗪对在基质凝胶中培养了48h的人脐静脉内皮细胞的管状结构的形成有抑制作用。结论:胼酞嗪可以抑制体内脉络膜新生血管及体外培养的人脐静脉内皮细胞管状结构的形成,并增强缺血后的兔脉络膜血流。胼酞嗪有望成为治疗年龄相关性黄斑变性的药物。

关键词：胼酞嗪脉络膜新生血管人脐静脉内皮细胞年龄相关性黄斑变性

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用正交变换估算横波分裂时间

石油物探译丛 1998年第2期 58-61页

作者： chiou-Fen Shieh 康立乾王旻宏新星石油公司华北石油局第四物探大队计算研究所

引言岩石标本的实验室研究表明,多数矿物集合体呈现各向异性的弹性特征。另外,已知经长时间层状堆积的各向同性地层也会呈现上述特征(Thomson,1950;Thomsen,1986)。例如油页岩就表现出这种各向异性。毫无疑问,观测地震的各向异性可以... 详细信息

引言岩石标本的实验室研究表明,多数矿物集合体呈现各向异性的弹性特征。另外,已知经长时间层状堆积的各向同性地层也会呈现上述特征(Thomson,1950;Thomsen,1986)。例如油页岩就表现出这种各向异性。毫无疑问,观测地震的各向异性可以认为是一种研究地球内部组成的有效方法(Babuska和Cara,1991)。

关键词：各向异性横波分裂正交变换油页岩

年龄相关性黄斑变性(AMD)实验模型的研究进展(英文)

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国际眼科杂志 2007年第3期7卷 585-589页

作者：江伟邱春亿美国德克萨斯A&M大学医学院眼科药理研究所

本文回顾了近年来各种不同的年龄相关性黄斑变性(AMD)的实验模型。其中应用最广泛的是激光诱导脉络膜新生血管的形成(CNV),即渗出性AMD的晚期阶段。其它模型有的以本病不同病理表现为基础,如地图样萎缩,drusen形成;有的以引起病变的不... 详细信息

本文回顾了近年来各种不同的年龄相关性黄斑变性(AMD)的实验模型。其中应用最广泛的是激光诱导脉络膜新生血管的形成(CNV),即渗出性AMD的晚期阶段。其它模型有的以本病不同病理表现为基础,如地图样萎缩,drusen形成;有的以引起病变的不同影响因素为基础,如年龄,光线,高脂饮食等。我们希望这篇综述能为研究者们选择合适的AMD模型起到一定参考作用。

关键词：年龄相关性黄斑变性模型

Constitutive Overexpression of Bcl-2, Survivin and ER Stress Chaperone GRP-78 Confers Intrinsic Radioresistance in Human Hepatocellular Carcinoma Cells: Insight into the Mechanistic Pathways Involved

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Journal of Cancer Therapy 2013年第2期4卷 399-407页

作者： Chih-Hsiung Wu Yih-Huei Uen Chun-Te Ho Ya-Ting Tseng Tsan-Zon Liu Jeng-Fong chiou Stephen Wan Leung Cancer Center and Department of Radiation Oncology Taipei Medical University and Hospital Taipei Chinese Taipei Department of General Surgery Chi-Mei Foundation Medical Center Tainan Chinese Taipei Department of Radiology and Nuclear Medicine Yuan’s General Hospital Kaohsiung Chinese Taipei Department of Surgery Taipei Medical University-Shuang Ho Hospital Taipei Chinese Taipei Graduate Institute of Medical Biotechnology Chang-Gung University Gueishan Chinese Taipei Graduate Institute of Medical Sciences Taipei Medical University Taipei Chinese Taipei

We present evidence here that abundantly expressed b-catenin-triggered NF-kB-dependent upregulation of inducible nitric oxide synthase(iNOS) found in hepatoma Mahlavu cells (RT-resistant variant designated as RR-Mal), but not in Hep 3B cells (RT-sensitive variant designated as RS-3B) is a key element contribrting to the radioresisitance through the activation of two prominent radioprotective pathways. First, high iNOS expression found in RR-Mal, but not in RS-3B cells was found to perturb calcium homeostasis that triggered ER stress response leading to the overproduction of ER chaperone GRP-78 via robust generation of cleaved ATF-6a (50 kDa) subunits and their nuclear translocation. Meanwhile, both abundantly expressed NF-κB and COX-2 found in RR-Mal cells could also provoke an increased production of PGE2 resulting in robust production of Bcl-2. Interestingly, when RR-Mal cells were treated with PDTC (a NF-κB inhibitor) or celecoxib (a COX-2 inhibitor), a concentration-dependent downregulation of Bcl-2 could be demonstrated implying that Bcl-2 overexpression was indeed mediated through NF-κB/Cox-2/PGE2 pathway. Importantly, we also unveiled that siRNA-mediated silencing of survivin in RR-Mal cells could result in a concomitant downregulation of GRP-78 due to a severe inhibition of ATF-6a (50 kDa) expression. Taken together, our data demonstrate that constitutively overexpressed b-catenin/NF-κB/iNOS and NF-κB/COX-2/PGE2 pathways that overproducing GRP-78, survivin and Bcl-2 expressions are responsible for radioresistance acquisition in RR-Mal cells. Thus, both pathways could be served as potential targets for overcoming radioresistance.

关键词： Radioresistance Hepatoma Cells Inducible Nitric Oxide Synthase Bcl-2 Survivin GRP-78