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Hydrothermal Synthesis and Structure Analysis of Indium Vanadate (InVO_4)

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Chinese Journal of Structural Chemistry 2005年第11期24卷 1242-1248页

作者： HUANG Qing-Ming yu jian-chang Instrumentation Analysis and Research Center Fuzhou University Fuzhou Fujian 350002 China Material science and engineering department Fuzhou University Fuzhou Fujian 350002 China

In this article, hydrothermal process is applied to synthesize nanometer InVO4. Influences of different experimental conditions （including mixing ratio of raw materials, reaction temperature, reaction time and so on） upon the synthetic products＇ purity and crystallite size are discussed to determine the best synthetic condition. The structure of nanometer InVO4 is analyzed, which helps to further understand the structure characteristics of InVO4 synthesized by applying hydrothermal process and lays foundation for further research.

关键词： hydrothermal process InVO4 experimental conditions structure

Synthesis and Characterization of Aluminum Doped Nano-ZrO_2 by Surfactant-assisted Route

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Chinese Journal of Structural Chemistry 2006年第5期25卷 552-556页

作者： HU Sheng-Wei yu jian-chang ZHU Si-En College of Material Science and Engineering Fuzhou University Fuzhou 350002 China

Recently, more and more interest has been focused on zirconia and its characteristics. In this paper, aluminum can be successfully incorporated into nano-ZrO2 via a cationic surfactant assisted route in the earlier preparation procedure. XRD, TEM, EDS, Uv-vis and N2 adsorption-desorption analysis methods were adopted for the characterization of prepared samples. The results show that aluminum has been homogeneously incorporated into nano-ZrO2. The prepared aluminum-doped samples show a distinctive blue shift in the Uv-vis spectra compared to normal nano-ZrO2. The distinctive increase of thermal stability and a mesoporous structure were observed.

关键词： nano-ZrO2 aluminum incorporation characterization

核壳结构的氧化锆包裹氧化铝纳米复合粉体的制备研究

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无机材料学报 2005年第5期20卷 1054-1058页

作者：俞建长福州大学材料学院福州350002

采用简单的一步醇盐水解包裹工艺在市售纳米氧化铝颗粒表面均匀地包裹了一层厚度为4-5nm的纳米晶氧化锆,形成核壳结构的氧化物纳米复合粉体.通过简单的锆源及酸浓度的控制,可以实现包裹的氧化锆层厚度的可控调节.借助XRD、TEM、FE-SEM及... 详细信息

采用简单的一步醇盐水解包裹工艺在市售纳米氧化铝颗粒表面均匀地包裹了一层厚度为4-5nm的纳米晶氧化锆,形成核壳结构的氧化物纳米复合粉体.通过简单的锆源及酸浓度的控制,可以实现包裹的氧化锆层厚度的可控调节.借助XRD、TEM、FE-SEM及EDS等测试手段对合成的材料进行了形貌与结构表征,结果表明这种纳米氧化锆包裹氧化铝的核壳复合结构材料,可以有效地抑制氧化铝在高温煅烧下的晶粒过分长大,实现在较低煅烧温度下即具有均匀致密的表面形貌.

关键词：核壳结构醇盐水解氧化锆包裹氧化铝

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水热法合成单分散ZnS微球

化学学报 2006年第22期64卷 2287-2290页

作者：王昌运俞建长福州大学材料科学与工程学院福州350000

以醋酸锌、硫代乙酰胺为原料,P123表面活性剂为模板,采用水热法,成功合成ZnS微球,并提出其可能的形成机理.通过XRD,TEM,FT-IR,N2吸附-脱附表征,发现该微球由ZnS纳米颗粒组成,ZnS纳米颗粒尺寸为6～7nm;微球直径500～600nm,具有单分散性,... 详细信息

以醋酸锌、硫代乙酰胺为原料,P123表面活性剂为模板,采用水热法,成功合成ZnS微球,并提出其可能的形成机理.通过XRD,TEM,FT-IR,N2吸附-脱附表征,发现该微球由ZnS纳米颗粒组成,ZnS纳米颗粒尺寸为6～7nm;微球直径500～600nm,具有单分散性,表面光滑,大小均匀;在4000～400cm-1波段具有热红外透过性等特点,有望在光、电、磁等领域发挥其潜在的应用价值.

关键词： ZnS微球 P123表面活性剂单分散水热法

Evaluation and clinical application of a new method for detecting ADAMTS13 activity

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Chinese Medical Journal 2010年第14期123卷 1859-1863页

作者： WANG An-you DONG Ning-zheng MA Zhen-ni ZHANG Jing-yu SU jian RUAN chang-geng Key Laboratory of Thrombosis and Hemostasis of Ministry of Health Jiangsu Institute of Hematology First Affiliated Hospital of Soochow University Suzhou Jiangsu 215006 China

Background A severe deficiency of ADAMTS13 activity contributes to the pathogenesis of thrombotic thrombocytopenic purpura （TTP）. Measuring the activity of ADAMTS13 is helpful for the diagnosis of TTP and the prognostic monitor in TTP patients. Most available assays are cumbersome and costly, so not easily adapted to routine laboratories. ADAMTS13 cleaves von Willebrand factor （VVVF） within the domain A2, located between domains A1 and A3. Therefore, specific assays for ADAMTS13 activity could be based on the different structures of VWF before and after the cleavage. Using this hypothesis we try to establish a new and simple method to determine ADAMTS13 activity. Methods First, plasma samples were exposed in denaturing condition to allow cleavage of VWF by ADAMTS13. Then, the ADAMTS13 activity was measured with two novel monoclonal antibodies, SZ-129 and SZ-125, which specifically recognize the VWF A1 and A3 domains by using a two-site sandwich ELISA. Compared with a residual-collagen binding assay （R-CBA）, plasma ADAMTS13 activities in 161 samples were assessed, and the inhibitory activities of ADAMTS13 autoantibody in 24 TTP patients were determined. The relationship of these two assays was analyzed by linear correlation, and the sensitivity and specificity of the new assay was also evaluated. Results Plasma ADAMTS13 activities in normal people and TTP, acute myocardial infarction （AMI）, and idiopathic thrombocytopenic purpura （ITP） patients determined by the new assay were （89.75±7.93）%, （17.63±18.71）%, （68.55±18.08）%, （85.83±9.84）%, respectively. Results were consistent with those of R-CBA, the squared correlation factor was 0.9183 of the two assays. The new assay can easily discriminate a ＂TTP plasma sample from a non-TTP plasma sample （P 〈0.01）, and the coefficient of variation for the new assay was 6.17%. In 23 idiopathic TTP patients, the inhibitor activity of ADAMTS13 autoantibody ranged from 12% to 100%, while no inhibitory activity was detected in one her

关键词： von Willebrand factor ADAMTS13 monoclonal antibody residual-collagen binding assay

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2015年版《中国药典》澄清度检查法研究

中国药学杂志 2017年第9期52卷 802-808页

作者：常艳余方键胡昌勤中国食品药品检定研究院北京100050

目的探讨2015年版《中国药典》通则0902澄清度第二法(浊度仪法)测定中出现问题的成因并提出解决方案。方法 2015年版《中国药典》和现行版《欧洲药典》澄清度检查第二法。结果由于浊度仪法的分辨力远高于目测法,当浊度标准原液吸光度符... 详细信息

目的探讨2015年版《中国药典》通则0902澄清度第二法(浊度仪法)测定中出现问题的成因并提出解决方案。方法 2015年版《中国药典》和现行版《欧洲药典》澄清度检查第二法。结果由于浊度仪法的分辨力远高于目测法,当浊度标准原液吸光度符合要求时(A=0.12~0.15),由其稀释配制的各级号标准液的浊度示值均成区间分布。因此,在实际工作中可出现采用第二法测定难以判断供试品是否符合规定的情况。结论本实验对上述两国药典澄清度检查法中的诸操作环结进行了系统比较,发现浊度标准液配制方法的差异,导致《中国药典》各浊度标准液的浊度值约为欧洲药典对应浊度值的75%。

关键词：澄清度仪器分析法限度合格判断 2015年版《中国药典》

阴离子表面活性剂辅助模板途径合成介孔结构氧化锆纳米晶

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化学学报 2005年第15期63卷 1429-1432页

作者：俞建长胡胜伟徐卫军福州大学材料科学与工程学院福州350002

利用阴离子表面活性剂十二烷基磺酸钠(SDS)为辅助模板剂,成功地合成了高稳定性的介孔氧化锆纳米晶,采用DSC-FG,FT-IR,XRD,TEM,UV-Vis以及N2吸附-脱附等方法对样品进行了表征.研究表明,以阴离子型十二烷基磺酸钠合成的氧化锆经600℃煅烧... 详细信息

利用阴离子表面活性剂十二烷基磺酸钠(SDS)为辅助模板剂,成功地合成了高稳定性的介孔氧化锆纳米晶,采用DSC-FG,FT-IR,XRD,TEM,UV-Vis以及N2吸附-脱附等方法对样品进行了表征.研究表明,以阴离子型十二烷基磺酸钠合成的氧化锆经600℃煅烧后仍为纯四方相,氧化锆晶粒平均尺寸约为6.5 nm.阴离子型表面活性剂与有机锆源形成自组装协同作用,合成的氧化锆具有蠕虫状介孔结构,经过500℃煅烧后介孔结构仍然保持,且由于表面活性剂的去除,比表面积显著提高,显示了良好的热稳定性.本实验制备的氧化锆纳米晶较一般方法制备的市售纳米氧化锆有明显紫外吸收边蓝移现象.

关键词：阴离子表面活性剂辅助模板合成介孔结构氧化锆纳米晶热稳定性比表面积催化剂

Interconnections between diabetic corneal neuropathy and diabetic retinopathy:diagnostic and therapeutic implications

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Neural Regeneration Research 2025年第8期20卷 2169-2180页

作者： Mingyi yu Faith Teo En Ning chang Liu yu-Chi Liu Tissue Engineering and Stem Cell Group Singapore Eye Research InstituteSingapore Yong Loo Lin School of Medicine National University of SingaporeSingapore Department of Cornea and External Eye Disease Singapore National Eye CenterSingapore Ophthalmology and Visual Sciences Academic Clinical Program Duke-NUS Medical SchoolSingapore

Diabetic corneal neuropathy and diabetic retinopathy are ocular complications occurring in the context of diabetes *** corneal neuropathy refers to the progressive damage of corneal *** retinopathy has traditionally been considered as damage to the retinal ***,growing evidence suggests that diabetic retinopathy is a complex neurovascular disorder resulting from dysfunction of the neurovascular unit,which includes both the retinal vascular structures and neural *** retinopathy is one of the leading causes of blindness and is frequently screened for as part of diabetic ocular ***,diabetic corneal neuropathy is commonly overlooked and underdiagnosed,leading to severe ocular surface *** studies have found that these two conditions tend to occur together,and they share similarities in their pathogenesis pathways,being triggered by a status of chronic *** review aims to discuss the interconnection between diabetic corneal neuropathy and diabetic retinopathy,whether diabetic corneal neuropathy precedes diabetic retinopathy,as well as the relation between the stage of diabetic retinopathy and the severity of corneal *** also endeavor to explore the relevance of a corneal screening in diabetic eyes and the possibility of using corneal nerve measurements to monitor the progression of diabetic retinopathy.

关键词： cornea corneal nerves diabetes diabetic corneal neuropathy diabetic retinopathy retina

Al_2O_3-SiO_2复合膜的制备与结构表征

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无机材料学报 2005年第5期20卷 1250-1256页

作者：俞建长徐卫军胡胜伟黄清明福州大学材料科学与工程学院福州350002

以异丙醇铝和正硅酸乙酯为主要原料,用溶胶-凝胶法制备无支撑体Al2O3-SiO2复合膜.应用XRD、DTA-TGA、IR、BET等测试手段对复合膜的物相组成、热稳定性、孔结构进行表征.并且讨论了化学组成和煅烧温度对复合膜孔结构的影响.研究结果表明:... 详细信息

以异丙醇铝和正硅酸乙酯为主要原料,用溶胶-凝胶法制备无支撑体Al2O3-SiO2复合膜.应用XRD、DTA-TGA、IR、BET等测试手段对复合膜的物相组成、热稳定性、孔结构进行表征.并且讨论了化学组成和煅烧温度对复合膜孔结构的影响.研究结果表明:550℃煅烧10h的复合膜物相组成为无定形的SiO2和γ-Al2O3晶体,粒度大小在2-4nm之间,化学组成为Al2O3/SiO2=3:2的复合膜在不同煅烧温度时,400℃煅烧的物相为γ-AlOOH和,γ-Al2O3,550-1150℃煅烧的物相为γ-Al2O3,1220℃煅烧的物相为γ-Al2O3和α-Al2O3,1300℃煅烧的物相为莫来石相和α-Al2O3;化学组成不同的复合膜主要是由Al-O网络和Si-O网络构成,没有形成Al-O-Si网络结构;复合膜具有良好的热稳定性;化学组成和煅烧温度对复合膜的孔结构有一定的影响.

关键词：异丙醇铝正硅酸乙酯溶胶-凝胶法 Al2O3-SiO2复合膜