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碳酸二乙酯合成3-羟甲基-3-乙基氧杂环丁烷的工艺研究

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太原理工大学学报 2008年第S1期39卷 159-161页

作者：赵晓霞魏文珑常宏宏王志忠太原理工大学化学化工学院

对以三羟甲基丙烷与碳酸二乙酯为原料合成3-羟甲基-3-乙基氧杂环丁烷的工艺进行了研究。研究表明,合成3-羟甲基-3-乙基氧杂环丁烷的较佳工艺条件为:当碳酸二乙酯用量为0.2.mol时,碳酸二乙酯与三羟甲基丙烷的摩尔比为1.0:1.0,反应时间1 h... 详细信息

对以三羟甲基丙烷与碳酸二乙酯为原料合成3-羟甲基-3-乙基氧杂环丁烷的工艺进行了研究。研究表明,合成3-羟甲基-3-乙基氧杂环丁烷的较佳工艺条件为:当碳酸二乙酯用量为0.2.mol时,碳酸二乙酯与三羟甲基丙烷的摩尔比为1.0:1.0,反应时间1 h,催化剂为KOH,用量为0.1 g,溶剂为甲醇,用量为3 mL。在此反应条件下,收率达60.6%。经GC分析产品的纯度为91.33%.

关键词： 3-羟甲基-3-乙基氧杂环丁烷三羟甲基丙烷碳酸二乙酯

Conformational Changes of Protein Adsorbed on Tailored Flat Substrates with Different Chemistries

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Conformational Changes of Protein Adsorbed on Tailored Flat ...

Ribozyme probe based on molecular beacon for real time monitoring of enzymatic cleavage process

第十六届全国光散射学术会议

作者： He Huang,~(1*) Jing Xie,~(1,2. Xiaoli Liu,~(1,2. Lin Yuan,~1 Songxi Guo,~(1,2. Shasha Wang,~(1,2. Haoran Yu, ~1 Hong Chen~(1*),Yanliang Zhang,~3 and Xiaohu Wu~(3*) 1 Jiangsu Key Laboratory for Advanced Functional Polymeric Materials Design and Application,Department of Polymer science & engineering,{2. of Chemistry,chemical engineering and Materials science, Soochow University,suzhou 2.512. 2.School of Materials science and engineering,Wuhan University of technology.Wuhan 430070 3 Thermo Fisher Scientific(Shanghai) Co.,Ltd,Shanghai 2.12.6.

＜正＞The bioactivity changes of a protein after being adsorbed on a material surface may result from protein’s conformational ***,however,direct evidence of such conformational changes of a protein adsorbed on a flat material surface is sparse so *** is because probing the conformation of an adsorbed protein on material surfaces,especially a flat one,remains a challenge due to considerable experimental difficulties.

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Chinese science Bulletin 2003年第23期48卷 2581-2584页

作者： MENG Xiangxian, WANG Kemin, TAN Weihong, LI Jun, TANG Zhiwen, GUO Qiuping, HUANG Shasheng & LI Du State Key Laboratory of Chemo/Biosensing and Chemometrics, Institute of biological technology, {2. of Chemistry and chemical Engi-neering, Hunan University, Changsha 410082. china Correspondence should be addressed to Wang Kemin (e-mail: kmwang @***) State Key Laboratory of Chemo/Biosensing and Chemometrics Institute of Biological Technology College of Chemistry and Chemical Engineering Human University

Ribozyme probe based on molecular beacon (MBR) for monitoring enzymatic cleavage process in real time is designed and studied. The approach relies on ri-bozyme substrates modified at the two arms, with a fluores-cent moiety attached to the end of one arm and a non-fluorescent quenching moiety attached to the end of the other arm. MBR is employed to directly convert the cleavage information into fluorescence signal in real time. Compared with traditional approach, this method provides a no-radiolabeling, sensitive and effective way to research on the ribozyme activity, enzymatic dynamic process and ri-bozyme function during gene therapy. The activity of the ribozyme against hepatitis C virus RNA (HCV-RNA) is stud-ied based on this assay.

关键词：酶探测器分裂过程动力学酶活性基因治疗肝炎

Experimental study on denitrification efficiency impacted by activated sludge filtering bed formed in gas,liquid-solid separating zone

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Experimental study on denitrification efficiency impacted by...

Fluorescent nanoparticles for chemical and biological sensing

The International Conference on Advances in chemical Technologies for Water and Wastewater Treatment

作者： Heli WANG~1 Li CHENG~2.Nan JIANG~1 ~1 School of Water resources and Environment,china University of Geosciences,Beijing,100083,china ~2.college of Resource and Safety engineering,china University of Mining and technology,Beijing,100083,china

The experimental study on denitrificaiton of nitrogenous organic wastewater using the co-processes of bio-fluidized bed plus activated sludge filter bed which formed in gas-liquid-solid separating zone was carried *** results showed that:1)Non-suppressed nitrification bacteria group by carbon sources was reproduced in the Bio-fluidized bed system,which in turn contributed to the NH-N removal efficiency of up to 93%-95%;2.Dynamic and stable sludge filter was formed in the gas-liquid-solid separating zone by the setting of incline-tube and the controlling of precipitation mud condition,which leaded to the dramatically improving of TN removal rate;3)85% BOD removal efficiency and 74% TN removal efficiency was achieved under the operation conditions of HRT of 1.5h, aeration of 0.2. m h,BOD load of 9.2.10.4 mdand TN load of 0.65 kgmd.

关键词： nitrogenous organic wastewater bio-fluidized bed sludge filter bed biological denitrification

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science china Chemistry 2011年第8期54卷 1157-1176页

作者： LIU JianBo, YANG XiaoHai, HE XiaoXiao, WANG KeMin, WANG Qing, GUO QiuPing, SHI Hui, HUANG Jin & HUO XiQin State Key Laboratory of Chemo/Biosensing and Chemometrics college of Chemistry and chemical {2., Institute of Biology, Hunan University Key Laboratory for Bio-Nanotechnology and Molecule {2. of Hunan Province, Changsha 410082. china 1. State Key Laboratory of Chemo/Biosensing and Chemometrics college of Chemistry and chemical {2. Institute of Biology Hunan University Key Laboratory for Bio-Nanotechnology and Molecule engineering of Hunan Province Changsha 410082 China

Fluorescent nanoparticles (NPs), including quantum dots (QDs), dye-doped NPs, and rare earth-based NPs, etc., have been a major focus of research and development during the past decade. The impetus behind such endeavors can be attributed to their unique chemical and optical properties, such as bright fluorescence, high photostability, large Stocks shift and flexible processability. The introduction of fluorescent NPs into analytical chemistry has opened up new venues for fluorescent analysis. In this review, we focus on the developments and analytical applications of fluorescent NPs in the chemical and {2. sensing of pH, ions, organic compounds, small {2. molecules, nucleic acids, proteins, virus and bacteria. The review also points out the in vitro and in vivo imaging application of fluorescent NPs at the cell and body levels. Meanwhile, the ad- vantages of NPs brought field of sensing and signal transductions are also discussed.

关键词： fluorescence sensing quantum dots dye-doped nanoparticles rare earth-based nanoparticles

熔体接枝与共混改性调控等规聚丙烯聚集态结构与性能

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苏州大学学报（工科版） 2011年第5期31卷 44-47页

作者：刘中华倪清兰王飞王耀荣朱新生苏州大学纺织与服装工程学院江苏苏州215021 华通(苏州)科技有限公司江苏苏州215123 苏州大学材料与化学化工部江苏苏州215123

聚丙烯在应力与温度等因素作用下晶型转变而引起的物理力学性能的变化尚未得到学术界与工程界的应有重视。通过熔体自由基接枝多功能团单体、添加高熔点的聚合物和α成核剂调控其聚集态结构,有效抑制了聚丙烯在应力作用下的晶型转变,改... 详细信息

聚丙烯在应力与温度等因素作用下晶型转变而引起的物理力学性能的变化尚未得到学术界与工程界的应有重视。通过熔体自由基接枝多功能团单体、添加高熔点的聚合物和α成核剂调控其聚集态结构,有效抑制了聚丙烯在应力作用下的晶型转变,改善了聚丙烯的疲劳稳定性,有助于增加其在工程应用中的使用寿命。

关键词：等规聚丙烯晶型转变成核剂熔体接枝疲劳

Self-assembled Nanoscaled Polyaniline Nanofibers(～10nm):Preparation and Properties

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Self-assembled Nanoscaled Polyaniline Nanofibers(～10nm):Pre...

全国第八届有机固体电子过程暨华人有机光电功能材料学术讨论会

作者： Hangjun Ding~(a,*),Yunze Long~b,Jiaoyan Shen~c,Meixiang Wan~(d,*) (a School of Material science and engineering,University of science and technology Beijing,Beijing 100083) (b college of Physics science,Qingdao University,Qingdao 2.6071) (c School of Mathematics and Physics,suzhou University of science and technology,suzhou 2.5011) (d Organic Solid Laboratory,Institute of Chemistry,Chinese Academy of sciences,Beijing 100190)

One-dimensional(1 D) conducting polymer nanostructures with a diameter of 1-100 nm have recently received great attention in nano-science and *** we know,nano-materials are characterized by large surface area,size and quantum effect that results in physical and chemical properties of nano-materials different from their bulk *** developing facial and controlling method to conducting polymer nanostructures

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活化气氛对钒磷氧催化剂物性的影响

石油与天然气化工 2002年第3期31卷 111-113页

作者：曾翎季伟捷陈懿浙江科技学院生化系南京大学化学化工学院

采用超临界流体干燥法制备VPO催化剂 ,并在N2.气氛或反应气氛 (1.5 %n -C4 H10 /17.0 %O2./N2.,体积比 )下进行活化 ,应用BET、XRD、XPS等表征手段 ,考察了各VPO催化剂粒子的比表面积、晶相结构、表面性质。实验表明 ,活化气氛不同 ,对... 详细信息

采用超临界流体干燥法制备VPO催化剂 ,并在N2.气氛或反应气氛 (1.5 %n -C4 H10 /17.0 %O2./N2.,体积比 )下进行活化 ,应用BET、XRD、XPS等表征手段 ,考察了各VPO催化剂粒子的比表面积、晶相结构、表面性质。实验表明 ,活化气氛不同 ,对催化剂物理性质影响也不同。在N2.气氛中活化的样品比表面积大于反应气氛中活化的样品 ;活化气氛对催化剂的晶相组成影响不大 ;在N2.气氛中活化的样品V的 2.电子结合能较反应气氛中活化有所降低。

关键词：活化气氛钒磷氧催化剂物性影响 VOP催化剂

催化剂在异丙苯合成系统中停留时间分布的研究

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山西化工 2004年第4期24卷 36-37,70页

作者：刘军太原科技大学化学与生物工程学院山西太原030021

针对合成异丙苯流程中,催化剂在合成系统中的停留时间的分布研究,建立数学模型,进行适当的计算,解决催化剂的合理加料量和加料间隔问题,取得良好的效果。

关键词：合成系统停留时间数学模型