Synthesis of the water-compatible p-aminophenol resin and its adsorption for salicylic acid
作者：
Xiao, Gu-qing* ;Zhang, Xue-jun
期刊：
Advanced Materials Research ,2011年311-313:1852-1856 ISSN：1022-6680
通讯作者：
Xiao, Gu-qing
作者机构：
[Xiao, Gu-qing] Hunan City Univ, Coll Chem & Environm Engn, Yiyang 413000, Peoples R China.;[Zhang, Xue-jun] Hunan City Univ, Coll Phys, Yiyang 413000, Peoples R China.
通讯机构：
[Xiao, Gu-qing] H;Hunan City Univ, Coll Chem & Environm Engn, Yiyang 413000, Peoples R China.
会议名称：
2011 International Conference on Advanced Design and Manufacturing Engineering, ADME 2011
会议时间：
16 September 2011 through 18 September 2011
会议地点：
Guangzhou, PEOPLES R CHINA
会议主办单位：
[Xiao, Gu-qing] Hunan City Univ, Coll Chem & Environm Engn, Yiyang 413000, Peoples R China.^[Zhang, Xue-jun] Hunan City Univ, Coll Phys, Yiyang 413000, Peoples R China.
会议论文集名称：
Advanced Materials Research
关键词：
Adsorption;Hypercrosslinked resin;P-aminophenol;Salicylic acid
摘要：
A novel water-compatible hypercrosslinked resin modified by p-aminophenol was synthesized with chloromethylated polystyrene and p-aminophenol by Friedel-Crafts reaction. The objective of this work was to study the adsorption performances for salicylic acid onto p-aminophenol resin. The results showed that the adsorption capacity of salicylic acid onto p-aminophenol resin was superior to XAD-4 resin. It is seen that the maximum adsorption capacity is observed at pH of 3.0. It was found the adsorption dynamics obeyed the pseudo-first-order rate equation and the intra-particle diffusion was the rate-limiting step. The maximum adsorption capacity of salicylic acid for p-aminophenol resin was measured to be 283.7 mg/g with the equilibrium concentration at 404.6mg/L. The micropore structure, the pore diameter of p-aminophenol resin, the hydrogen bond between p-aminophenol resin and salicylic acid bring the larger adsorption capacity.
语种：
英文
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A Cry1Ac Toxin Variant Generated by Directed Evolution has Enhanced Toxicity against Lepidopteran Insects
作者：
Shan, Shiping;Zhang, Youming;Ding, Xuezhi;Hu, Shengbiao;Sun, Yunjun;...
期刊：
Current Microbiology ,2011年62(2):358-365 ISSN：0343-8651
通讯作者：
Xia, Liqiu
作者机构：
[Zhang, Youming; Hu, Shengbiao; Yu, Ziquan; Zhu, Zhou; Sun, Yunjun; Xia, Liqiu; Shan, Shiping; Ding, Xuezhi] Hunan Normal Univ, Key Lab Microbial Mol Biol Hunan Prov, Coll Life Sci, Changsha 410081, Hunan, Peoples R China.;[Liu, Shiquan] Hunan City Univ, Dept Chem & Environm Engn, Yiyang 413000, Hunan, Peoples R China.
通讯机构：
[Xia, Liqiu] H;Hunan Normal Univ, Key Lab Microbial Mol Biol Hunan Prov, Coll Life Sci, Changsha 410081, Hunan, Peoples R China.
关键词：
Bacillus Thuringiensis;Insecticidal Activity;Shanghai Sangon Biological Engineer Technology;cry1Ac Gene;Insecticidal Crystal Protein
摘要：
Cry1Ac insecticidal crystal proteins produced by Bacillus thuringiensis (Bt) have become an important natural biological agent for the control of lepidopteran insects. In this study, a cry1Ac toxin gene from Bacillus thuringiensis 4.0718 was modified by using error-prone PCR, staggered extension process (StEP) shuffling combined with Red/ET homologous recombination to investigate the insecticidal activity of delta-endotoxin Cry1Ac. A Cry1Ac toxin variant (designated as T524N) screened by insect bioassay showed increased insecticidal activity against Spodoptera exigua larvae while its original insecticidal activity against Helicoverpa armigera larvae was still retained. The mutant toxin T524N had one amino acid substitution at position 524 relative to the original Cry1Ac toxin, and it can accumulate within the acrystalliferous strain Cry-B and form more but a little smaller bipyramidal crystals than the original Cry1Ac toxin. Analysis of theoretical molecular models of mutant and original Cry1Ac proteins indicated that the mutation T524N located in the loop linking β16-β17 of domain III in Cry1Ac toxin happens in the fourth conserved block which is an arginine-rich region to form a highly hydrophobic surface involving interaction with receptor molecules. This study showed for the first time that single mutation T524N played an essential role in the insecticidal activity. This finding provides the biological evidence of the structural function of domain III in insecticidal activity of the Cry1Ac toxin, which probably leads to a deep understanding between the interaction of toxic proteins and receptor macromolecules. © 2010 Springer Science+Business Media, LLC.
语种：
英文
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330阴离子交换树脂对草甘膦的吸附性能
作者：
肖谷清;龙立平;何露;余婷;钟桐生
期刊：
化学研究与应用 ,2011年23(4):475-477 ISSN：1004-1656
作者机构：
[肖谷清; 龙立平; 何露; 余婷; 钟桐生] 湖南城市学院化学与环境工程系
关键词：
330阴离子交换树脂;草甘膦;吸附
摘要：
采用静态吸附法研究了330阴离子交换树脂对水中草甘膦的吸附性能,并研究了吸附动力学;测定了溶液的pH值、温度、NaCl含量等因素对330树脂吸附草甘膦的影响。结果表明:330树脂对水中草甘膦的吸附速率快;在pH=2.69时对草甘膦的吸附性能最好;330树脂对草甘膦的吸附是放热、自发的过程,吸附等温线符合Freundlich方程;NaCl含量对330树脂吸附草甘膦有显著影响。
语种：
中文
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洞庭湖湿地8种优势植物对镉的富集特征
作者：
董萌;赵运林;库文珍;庹瑞锐;戴枚斌;...
期刊：
生态学杂志 ,2011年30(12):2783-2789 ISSN：1000-4890
通讯作者：
Zhao, Y.-L.
作者机构：
[董萌] 湖南农业大学生物科学技术学院,长沙410128;[董萌] 湖南城市学院化学与环境工程系,湖南益阳413000;湖南城市学院化学与环境工程系,湖南益阳,413000;湖南农业大学生物科学技术学院,长沙,410128;南洞庭湖自然保护区管理局,湖南益阳,411000
通讯机构：
[Zhao, Y.-L.] D;Department of Chemistry and Environment Engineering, Hunan City University, Yiyang 413000, Hunan, China
关键词：
洞庭湖;优势植物;镉污染;修复
摘要：
针对洞庭湖湿地土壤Cd污染严重的现状,对湖区滨岸带8种优势植物的Cd富集特征及其修复效果进行了分析。结果表明,蒌蒿（Artemisia selengensis）对Cd表现出显著的富集特征,对Cd污染的修复效果好,是洞庭湖土壤Cd污染的理想修复材料;南艾蒿（Artemisia verlotorum）对Cd污染具有较好的修复效果,可作为湿地土壤Cd污染修复的备选材料;芦苇（Phragmites australis）和南荻（Miscanthus lutarioriparius）植株的根部对Cd的积累量较高,具有良好的稳定修复效果,且由于二者地上部生物量大、能被连续刈割的特点,对洞庭湖湿地Cd污染治理起到一定的促进作用。
语种：
中文
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La-Ni-Mo-B非晶态催化剂的制备、加氢脱氧性能及失活研究
作者：
王威燕;杨运泉;罗和安;王锋;胡韬;...
期刊：
燃料化学学报 ,2011年39(5):367-372 ISSN：0253-2409
通讯作者：
Yang, Y.-Q.(yangyunquan@xtu.edu.cn)
作者机构：
[刘文英; 王威燕; 胡韬; 杨运泉; 王锋; 罗和安] School of Chemical Engineering, Xiangtan University, Xiangtan 411105, China;[王锋] Department of Chemical and Environment Engineering, Hunan City University, Yiyang 413000, China
关键词：
非晶态催化剂;加氢脱氧;4-甲基苯酚;催化剂失活;生物油
摘要：
以NaBH_4为还原剂采用化学还原法制备La-Ni-Mo-B非晶态催化剂，用BET、SEM XRD和XPS等手段对催化剂进行表征，以4-甲基苯酚为探针研究其加氢脱氧性能，并探讨了4-甲基苯酚的加氢脱氧反应路径。结果表明，助剂La的加入，减小了催化剂的粒径，增大了比表面积，促进Ni~(2+)和Mo~(6+)的还原。275℃时，4-甲基苯酚加氢脱氧转化率达97％，甲基环己烷选择性达96％，加氢脱氧反应按氢化-氢解路径进行，产物中芳烃含量明显低于世界燃油规范Ⅲ类油标准(芳烃的质量分数小于15％)。催化剂活性降低的主要原因是由于Ni活性中心的非晶态结构被破坏。
语种：
中文
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Anatase TiO2 Nano-particles Preparation With Neutralization Hydrolysis Technique and Photocatalytic Performance
作者：
Lin, Li* ;Lei, Cunxi;Zhou, Jicheng
期刊：
Advanced Materials Research ,2010年113-116(229):1639-1643 ISSN：1022-6680
通讯作者：
Lin, Li
作者机构：
[Lei, Cunxi; Lin, Li] Hunan City Univ, Dept Chem & Environm Engn, Hunan City 413000, Peoples R China.;[Zhou, Jicheng] Xiangtan Univ, Dept Chem Engn, Xiangtan 411105, Peoples R China.
通讯机构：
[Lin, Li] H;Hunan City Univ, Dept Chem & Environm Engn, Hunan City 413000, Peoples R China.
会议名称：
2010 International Conference of Environment Materials and Environment Management, EMEM 2010
会议时间：
24 July 2010 through 25 July 2010
会议地点：
哈尔滨
会议主办单位：
[Lin, Li;Lei, Cunxi] Hunan City Univ, Dept Chem & Environm Engn, Hunan City 413000, Peoples R China.^[Zhou, Jicheng] Xiangtan Univ, Dept Chem Engn, Xiangtan 411105, Peoples R China.
会议论文集名称：
2010 International Conference of Environment Materials and Environment Management(2010年环境材料与环境管理国际学术会议 EMEM 2010)论文集
关键词：
neutralization hydrolysis;TiO2 nanomaterial;photocatalytic
摘要：
A neutralization hydrolysis route has been used to synthesize titanium oxide nanoparticles. Transmission electron microscopy(TEM) and X-ray diffraction(XRD) characterization results showed the TiO2 nanoparticles were single anatase phases when calcined at 600°C-800°for 2h. The particle diameter ranged from 15 to 30nm. The pH value was key factor for precursor composition. When pH value 2-4, the H2TiO3 precursor with low agglomeration was obtained. As-prepared anatase TiO 2 nanoparticles, during photodegradation of methylic orange under UV-light irradiation(λ=254nm), exhibited excellent activity, more than 95.5% methylic orange was degraded in 1h. © (2010) Trans Tech Publications, Switzerland.
语种：
英文
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New observation on a class of old reactions: Chemoselectivity for the solvent-free reaction of aromatic aldehydes with alkylketones catalyzed by a double-component inorganic base system
作者：
Shan ZiXing;Luo XinXiang;Hu Lin;Hu XiaoYun
期刊：
SCIENCE IN CHINA SERIES B-CHEMISTRY ,2010年53(5):1095-1101 ISSN：1006-9291
通讯作者：
Shan, Z.(zxshan@whu.edu.cn)
作者机构：
[Hu XiaoYun; Hu Lin; Shan ZiXing] Wuhan Univ, Dept Chem, Wuhan 430072, Peoples R China.;[Luo XinXiang] Hunan City Univ, Dept Chem & Environm Engn, Yiyang 413049, Peoples R China.
通讯机构：
Department of Chemistry, Wuhan University, China
关键词：
SOLVENT-FREE;REACTION;solid;base;mixture;catalysis;CHEMOSELECTIVITY;aldehyde-ketone;REACTION;solid base mixture catalysis;chemoselectivity;aldehyde-ketone reaction
摘要：
Solvent-free reactions of aromatic aldehydes with three representative ketones,including acetophenone,acetone and cyclohexanone,have been examined under the catalysis of a low-cost inorganic base system consisting of NaOH and K2CO3.It was found that the chemoselectivity of the reactions is in close relationship with the composition of the reactants and the doublecomponent catalyst.Under the optimized experimental conditions,1,2,3,4,5-pentasubstituted cyclohexanols,α,β-unsaturated ketones and Claisen-Schmidt bicondensation products were obtained in high yields.Two Kostanecki’s triketones were separated,The composition and structure were affirmed by X-ray crystallographic analysis.
语种：
英文
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A method of WAV Broadcast Using the I2S of LPC2300 Series ARM Chipset
作者：
Song Juanjuan* ;Liu Jun'an;Tan Jiqiu;Huang Jusheng
期刊：
Applied Mechanics and Materials ,2010年34-35:909-914 ISSN：1662-7482
通讯作者：
Song Juanjuan
作者机构：
[Song Juanjuan] Hunan City Univ, Dept Chem & Environm Engn, Yiyang 413000, Hunan, Peoples R China.;[Liu Jun'an; Huang Jusheng; Tan Jiqiu] Hunan Inst Engn, Dept Mech Engn, Xiangtan 411101, Peoples R China.
通讯机构：
[Song Juanjuan] H;Hunan City Univ, Dept Chem & Environm Engn, Yiyang 413000, Hunan, Peoples R China.
会议名称：
International Conference on Mechanical Engineering and Green Manufacturing 2010, MEGM 2010
会议时间：
19 November 2010 through 22 November 2010
会议地点：
Xiangtan, PEOPLES R CHINA
会议主办单位：
[Song Juanjuan] Hunan City Univ, Dept Chem & Environm Engn, Yiyang 413000, Hunan, Peoples R China.^[Liu Jun'an;Tan Jiqiu;Huang Jusheng] Hunan Inst Engn, Dept Mech Engn, Xiangtan 411101, Peoples R China.
关键词：
Audio bus;Embedded system;I2S
摘要：
I2S (Inter-IC Sound Bus) is one of the general audio buses applied in various industrial or embedded systems. It only processes the audio data, while other signals like various codes and control signals are transmitted individually. This paper presents an approach how to construct an embedded audio system using the I2S bus to connect relevant supporting code chip and decode chip. This system can reduce the consumption of system resources drastically, therefore fluent WAV broadcast can be guaranteed. Moreover, the familiar media files, such as MPEG1, MPEG2, MP3, MPEG4 can be played through adding its decoder. The ARM chipset of the LPC2300 series is applied in this system, therefore, system's reliability can be improved. This method can be wiedly used in vehicle- borne, ship-borne embedded flash players and portable media players.
语种：
英文
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New observation on a class of old reactions: Chemoselectivity for the solvent-free reaction of aromatic aldehydes with alkylketones catalyzed by a double-component inorganic base system
作者：
Shan ZiXing* ;Luo XinXiang;Hu Lin;Hu XiaoYun
期刊：
中国科学：化学英文版 ,2010年53(5):1095-1101 ISSN：1674-7291
通讯作者：
Shan ZiXing
作者机构：
[Hu XiaoYun; Hu Lin; Shan ZiXing] Wuhan Univ, Dept Chem, Wuhan 430072, Peoples R China.;[Luo XinXiang] Hunan City Univ, Dept Chem & Environm Engn, Yiyang 413049, Peoples R China.
通讯机构：
[Shan ZiXing] W;Wuhan Univ, Dept Chem, Wuhan 430072, Peoples R China.
关键词：
solvent-free reaction;solid base mixture catalysis;chemoselectivity;aldehyde-ketone reaction
摘要：
Solvent-free reactions of aromatic aldehydes with three representative ketones, including acetophenone, acetone and cyclohexanone, have been examined under the catalysis of a low-cost inorganic base system consisting of NaOH and K(2)CO(3). It was found that the chemoselectivity of the reactions is in close relationship with the composition of the reactants and the double-component catalyst. Under the optimized experimental conditions, 1,2,3,4,5-pentasubstituted cyclohexanols, alpha,beta-unsaturated ketones and Claisen-Schmidt bicondensation products were obtained in high yields. Two Kostanecki's triketones were separated, The composition and structure were affirmed by X-ray crystallographic analysis.
语种：
英文
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Effective Aerobic Allylic Oxidation of beta-ionone and Series of Olefins Catalyzed by Phosphomolybdic Acid
作者：
Liu, Chang-hui;Li, Fei;Tang, Rui-ren*
期刊：
Bulletin of the Korean Chemical Society ,2010年31(6):1723-1725 ISSN：0253-2964
通讯作者：
Tang, Rui-ren
作者机构：
[Liu, Chang-hui] Hunan City Univ, Dept Chem & Environm Engn, Yiyang 413000, Peoples R China.;[Tang, Rui-ren; Li, Fei] Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Peoples R China.
通讯机构：
[Tang, Rui-ren] C;Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Peoples R China.
关键词：
Liu, Chang-Hui;Li, Fei;Tang, Rui-Ren;Aerobic allylic oxidation;4-Oxo-$\beta$-ionone;Phosphomolybdic acid
语种：
英文
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对乙酰氨基酚修饰的后交联树脂对双酚A的吸附性能
作者：
肖谷清;龙立平;王姣亮;徐满才
期刊：
中国环境科学 ,2010年30(6):775-779 ISSN：1000-6923
通讯作者：
Xiao, G.-Q.
作者机构：
[肖谷清; 龙立平; 王姣亮] 湖南城市学院化学与环境工程系;[徐满才] 湖南师范大学化学化工学院
通讯机构：
College of Chemistry and Environmental Engineering, Hunan City University, China
关键词：
对乙酰氨基酚;后交联树脂;双酚A;吸附热力学;吸附动力学
摘要：
用二氯乙烷为溶剂,用FeCl_3为催化剂,使氯球和对乙酰氨基酚发生Friedel-Crafts反应制得了对乙酰氨基酚修饰的后交联树脂,对其结构进行了表征,研究乙酰氨基和酚羟基二类氢键作用位点修饰的后交联树脂对双酚A的吸附性能.结果表明,红外光谱显示对乙酰氨基酚已被成功地修饰在后交联树脂上.对乙酰氨基酚修饰的后交联树脂与氯球相比,BET比表面积、孔容明显增大,孔径明显变小.对乙酰氨基酚修饰的后交联树脂对双酚A的吸附量明显高于75%活性炭的聚砜微球对双酚A的吸附量.对乙酰氨基酚修饰的后交联树脂对双酚A的吸附为放热、自发的过程;树脂可以用100%酒精解吸,解吸率为99.92%;吸附动力学数据符合一级吸附速率方程,颗粒内扩散是吸附速率的主要控制步骤,吸附速率同时还受液膜扩散的影响
语种：
中文
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A fluorescent sensing membrane for iodine based on intramolecular excitation energy transfer of anthryl appended porphyrin
作者：
Long LiPing;You MingXu;Wang Hao;Wang YongXiang;Yang RongHua*
期刊：
SCIENCE IN CHINA SERIES B-CHEMISTRY ,2009年52(6):793-801 ISSN：1006-9291
通讯作者：
Yang RongHua
作者机构：
[Long LiPing; Yang RongHua] Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Hunan, Peoples R China.;[Long LiPing] Hunan City Univ, Dept Chem & Environm Engn, Yiyang 413500, Peoples R China.;[Yang RongHua; You MingXu; Wang Hao; Wang YongXiang] Peking Univ, Coll Chem & Mol Engn, Beijing 100871, Peoples R China.
通讯机构：
[Yang RongHua] H;Hunan Univ, Coll Chem & Chem Engn, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Hunan, Peoples R China.
关键词：
fluorescence;sensor;energy transfer;iodine
摘要：
A single anthryl appended meso-tetraphenylporphyrin (TPP) dyad has been synthesized and applied in fluorescence sensing of iodine based on the intramolecular excitation energy transfer. The molecular recognition of the sensor is based on the interaction of iodine with inner anthracene moiety of the dyad, while the signal reporter for the recognition process is the TPP fluorescence quenching. Because the emission spectrum of anthracene is largely overlapped with the Soret band absorption of TPP, intramolecular excitation energy transfer interaction occurs between the donor, anthracene and acceptor, TPP. This energy transfer leads to TPP fluorescence emission by excitation of anthracene. The sensor was constructed by immobilizing the dyad in a plasticized poly(vinyl chloride) (PVC) membrane. The sensing membrane shows higher sensitivity compared to the sensors by using anthracene, TPP, or a mixture of anthracene and TPP as sensing materials. Under the optimum conditions, iodine in a sample solution can be determined from 2.04 to 23.6 mmol&bullL<sup>-1</sup> with a detection limit of 33 nmol&bullL<sup>-1</sup>. The sensing membrane shows satisfactory response characteristics including good reproducibility, reversibility and stability, as well as the short response time of less than 60 s. Except for Cr<inf>2</inf>O <inf>7</inf> <sup>2-</sup> and MnO <inf>4</inf> <sup>-</sup> , other common metal ions and anions in foodstuff do not interfere with iodine determination. The proposed method was applied in the determination of iodine in table salt samples. The results agree well with those obtained by other methods. ©2009 Science in China Press and Springer-Verlag GmbH.
语种：
英文
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基于OMMT/PVDF-HFP的锂离子电池用复合聚合物电解质
作者：
胡拥军;陈白珍;李义兵
期刊：
复合材料学报 ,2009年26(6):54-60 ISSN：1000-3851
通讯作者：
Hu, Y.(hyjwsg@163.com)
作者机构：
[胡拥军] Department of Chemistry and Environmental Engineering, Hunan City University, Yiyang 413000, China;[李义兵; 胡拥军; 陈白珍] School of Metallurgical Science and Engineering, Central South University, Changsha 410083, China
通讯机构：
[Hu, Y.] D;Department of Chemistry and Environmental Engineering, , Yiyang 413000, China
关键词：
聚合物电解质;锂离子电池;离子电导率;蒙脱石
摘要：
对蒙脱石进行改性, 并用直接挥发溶剂法制备有机蒙脱石/聚偏氟乙烯-六氟丙烯复合聚合物电解质. 用扫描电子显微镜和X射线衍射等对所制电解质性能进行表征, 用交流阻抗和充放电实验研究聚合物电池的电化学性质. 结果表明: 直接挥发溶剂法制得的复合聚合物膜呈蜂窝状, 孔穴丰富, 强度增加, 浸取电解液后室温离子电导率为1. 51 mS/cm, 电化学稳定窗口为5. 5 V;以LiCoO_2为正极制得的聚合物电池0. 1C充放电, 50次循环后容量保持率达到95. 3%, 倍率放电能力较好, 有机蒙脱石的加入可改善电池的电极界面性质, 提高电池充放电循环性能.
语种：
中文
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疏水/亲水大孔PDVB/PAEM IPN 树脂对香兰素的吸附性能
作者：
Xiao Gu-Qing;Me Xiang-Lin;Xu Man-Cai*
期刊：
物理化学学报 ,2009年25(1):97-102 ISSN：1000-6818
通讯作者：
Xu Man-Cai
作者机构：
[Xu Man-Cai; Xiao Gu-Qing; Me Xiang-Lin] Hunan Normal Univ, Coll Chem & Chem Engn, Changsha 410081, Hunan, Peoples R China.;[Xiao Gu-Qing] Hunan City Univ, Coll Chem & Environm Engn, Yiyang 413000, Hunan, Peoples R China.
通讯机构：
[Xu Man-Cai] H;Hunan Normal Univ, Coll Chem & Chem Engn, Changsha 410081, Hunan, Peoples R China.
关键词：
疏水/亲水;香兰素;吸附;热力学;动力学
摘要：
采用分步悬浮聚合法制备了具有疏水性能的聚二乙烯基苯(polydivinyibenzene,PDVB)为第一网,具有亲水性能的聚丙烯酰乙二胺(polyacrylethylenediamine,PAEM)为第二网的疏水/亲水大孔聚二乙烯基苯/聚丙烯酰乙二胺(PDVB/PAEM)互穿聚合物物内网络(interpenetrating polymer networks,IPN),研究这类疏水/亲水IPN组成的树脂对吸附质的吸附热力学和吸附动力学;测定了该树脂对香兰素在不同温度下的吸附等温线,吸附等温线符合Freundlich 等温吸附方程,利用热力学函数关系计算出了吸附焓、自由能和熵变.实验表明,PDVB/PAEMIPN树脂中疏水性的 PDVB 网具有疏水作用吸附能力,亲水性的PAEM网具有氧键作用吸附能力.吸附动力学数据符合 Lagergren 二级速率方程,颗粒内扩散是吸附速率的主要控制步骤,可口采用 HSDM 模型加以描述.
语种：
中文
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Synthesis of the hydrophobic-hydrophilic macroporous poly divinylbenzene/poly(sodium acrylate) IPN resin and adsorption performance for berberine
作者：
Xiao, Guqing;Gao, Shuqin;Xie, Xianglin;Xu, Mancai*
期刊：
Polymers for Advanced Technologies ,2009年20(12):1157-1162 ISSN：1042-7147
通讯作者：
Xu, Mancai
作者机构：
[Xu, Mancai; Gao, Shuqin; Xiao, Guqing; Xie, Xianglin] Hunan Normal Univ, Coll Chem & Chem Engn, Changsha 410081, Hunan, Peoples R China.;[Xiao, Guqing] Hunan City Univ, Coll Chem & Environm Engn, Yiyang 413000, Peoples R China.
通讯机构：
[Xu, Mancai] H;Hunan Normal Univ, Coll Chem & Chem Engn, Changsha 410081, Hunan, Peoples R China.
关键词：
hydrophobic–hydrophilic;PDVB/PNaA IPN resin;synthesis;berberine;adsorption
摘要：
<jats:title>Abstract</jats:title><jats:p>The macroporous polydivinylbenzene/poly(methyl acrylate) interpenetrating polymer network (PDVB/PMA IPN) was prepared by the sequential suspension polymerization method, and was modified to be hydrophobic–hydrophilic macroporous polydivinylbenzene/poly (sodium acrylate) IPN (PDVB/PNaA IPN) by converting the PMA to PNaA under the condition of base. The effects of different mass ratio of the two networks and different cross‐linking degree of the second network on the pore structure and adsorption capacity of PDVB/PNaA IPN resin were studied. The PDVB/PNaA IPN resin whose adsorption quantity is the biggest was chosen to study further. The pore structure, the weak acid exchange capacity, the water retention capacity, and the swelling ability of PDVB/PNaA IPN resin were measured. The study focused on the adsorption isotherms of berberine at different temperatures. Isosteric adsorption enthalpy, adsorption Gibbs free energies can be calculated according to thermodynamic functions. The results show that the saturated adsorption quantity of berberine is up to 109.4 mg ml<jats:sup>−1</jats:sup> (wet resin) by the way of dynamic adsorption and desorption experiment. The resin could be reused by the mixture with 0.5% sodium chloride and 80% ethanol. On the one hand the hydrophobic PDVB in the PDVB/PNaA IPN resin has the ability of adsorption using π–π interaction, and on the other hand the hydrophilic PNaA in the PDVB/PNaA IPN resin has the ability of adsorption using ion exchange interaction. An important conclusion can be drawn that the PDVB/PNaA IPN resin has a promising application prospect in extracting and separating quaternary ammonium type alkaloids such as berberine. Copyright © 2009 John Wiley & Sons, Ltd.</jats:p>
语种：
英文
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The Theoretical Three-dimensional Structure of Bacillus thuringiensis Cry5Aa and Its Biological Implications
作者：
Xin-Min, Zhao;Li-Qiu, Xia* ;Xue-Zhi, Ding;Fa-Xiang, Wang
期刊：
PROTEIN JOURNAL ,2009年28(2):104-110 ISSN：1572-3887
通讯作者：
Li-Qiu, Xia
作者机构：
[Li-Qiu, Xia; Xue-Zhi, Ding; Xin-Min, Zhao; Fa-Xiang, Wang] Hunan Normal Univ, Key Lab Microbial Mol Biol Hunan Prov, Coll Life Sci, Changsha 410081, Hunan, Peoples R China.;[Xin-Min, Zhao] Hunan City Univ, Dept Environm Chem & Engn, Yiyang 413000, Peoples R China.
通讯机构：
[Li-Qiu, Xia] H;Hunan Normal Univ, Key Lab Microbial Mol Biol Hunan Prov, Coll Life Sci, Changsha 410081, Hunan, Peoples R China.
关键词：
Three-dimensional structure;Homology modeling;Cry5Aa;Bacillus thuringiensis
摘要：
Cry5Aa is a crystal protein produced by Bacillus thuringiensis serovar. damstadiensis during its stationary phase, this δ-endotoxin is active against nematodes and has great potential for nematodes control. The theoretical model of the three-dimensional structure of Cry5Aa was predicted by homology modeling on the structures of the Cry1Aa which is specific to Lepidopteran insects. The structure of the Cry5Aa resembles previously reported Cry toxin structures but shows the following distinctions. Cry5Aa has a long insertion in α2 of domain I. Some loops in the domain II and III of Cry5Aa are exposed to the solvent. In this work we give a brief description of our model and hypothesize the residues of the Cry5Aa that could be important in receptor recognition and pore formation. This model will be helpful for the design of mutagenesis experiments aimed to the improvement of toxicity, and lead to a deep understanding of the mechanism of action of nematicidal toxins. © 2009 Springer Science+Business Media, LLC.
语种：
英文
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Preparation and Luminescent Properties of a Novel Carbazole Functionalized Bis-beta-diketone Ligand and Corresponding Eu(III) and Tb(III) Complexes
作者：
Zhang, Wei;Liu, Chang-hui;Tang, Rui-ren* ;Tang, Chang-Quan
期刊：
Bulletin of the Korean Chemical Society ,2009年30(10):2213-2216 ISSN：0253-2964
通讯作者：
Tang, Rui-ren
作者机构：
[Tang, Rui-ren; Zhang, Wei; Tang, Chang-Quan] Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.;[Liu, Chang-hui] Hunan City Univ, Dept Chem & Environm Engn, Yiyang 413000, Peoples R China.
通讯机构：
[Tang, Rui-ren] C;Cent S Univ, Sch Chem & Chem Engn, Changsha 410083, Hunan, Peoples R China.
关键词：
Zhang, Wei;Liu, Chang-Hui;Tang, Rui-Ren;Tang, Chang-Quan;Organic ligand;Carbazole;Bis-$\beta$-diketone;Eu(III) and Tb(III) complexes;Luminescent property
摘要：
A novel carbazole functionalized bis-β-diketone type organic ligand, 1,1′-(2,6-bispyridyl)bis-3-(9-ethylcarbazole-3-yl)-1,3-propanedione (H2L) and its corresponding lanthanide complexes Eu2(L)3and Tb2(L)3 were successfully prepared. The ligand and complexes were characterized in detail based on FT-IR spectra, 1H NMR and elemental analysis. The observed UV-Vis absorption and photoluminescence properties of the complexes were investigated, it shows that the Eu(III) and Tb(III) ions can be sensitized efficiently by the ligand (H2L) to some extent, in particular, the complex Tb2(L)3 exhibits a more excellent luminescence property than the Eu(III) complex. Meanwhile, the introduction of the carbazole moiety can enlarge the π-conjugated system of the ligand and enhance the luminescent intensity of the complexes. The results show that the complexes would be used as excellent luminescent materials.
语种：
英文
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Homology Modeling of Cyt2Cal of Bacillus thuringiensis and Its Molecular Docking with Inositol Monophosphate
作者：
Zhao Xinmin;Xia Liqiu* ;Ding Xuezhi;Yu Ziquan;Lue Yuan;...
期刊：
中国化学 ,2009年27(10):2085-2089 ISSN：1001-604X
通讯作者：
Xia Liqiu
作者机构：
[Zhao Xinmin; Ding Xuezhi; Lue Yuan; Yu Ziquan; Xia Liqiu; Tao Wenna] Hunan Normal Univ, Coll Life Sci, Key Lab Microbial Mol Biol Hunan Prov, Changsha 410081, Hunan, Peoples R China.;[Zhao Xinmin] Hunan City Univ, Dept Environm Chem & Engn, Yiyang 413000, Hunan, Peoples R China.
通讯机构：
[Xia Liqiu] H;Hunan Normal Univ, Coll Life Sci, Key Lab Microbial Mol Biol Hunan Prov, Changsha 410081, Hunan, Peoples R China.
关键词：
Bacillus thuringiensis;Cyt2Ca1;molecular docking;homology modeling;inositol monophosphate
摘要：
<jats:title>Abstract</jats:title><jats:p>Cyt2Ca1 is an insecticidal crystal protein produced by <jats:italic>Bacillus thuringiensis</jats:italic> ET29 during its stationary phase, and this δ‐endotoxin demonstrates remarkable insecticidal activity against not only insects of the order <jats:italic>Coleoptera</jats:italic>, but also against fleas, and in particular the larvae of the cat flea, <jats:italic>Ctenocephalides felis</jats:italic>. The first theoretical model of the three‐dimensional structure of Cyt2Ca1 was predicted and compared with Cyt2Aa, which is lethal to insect larvae. The three‐dimensional structure of the Cyt2Ca1 was obtained by homology modeling on the structures of the Cyt2Aa protein. The deduced model resembles previously reported Cyt2Aa toxin. A binding mode of inositol monophosphate as a polar head group of the putative membrane phospholipid ligand to Cyt2Ca1 was presented using molecular docking. The residues of Leu9, Glu21, Tyr23 and Gln110 of the Cyt2Ca1 toxin are responsible for the interactions with inositol monophosphate via eight hydrogen bonds. Those residues could be important for receptor recognition. This binding simulation will be helpful for the design of mutagenesis experiments aimed at the improvement of toxicity, and lead to a deep understanding of the mechanism of action of Cyt toxins.</jats:p>
语种：
英文
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Reversible molecular switching of molecular beacon: controlling DNA hybridization kinetics and thermodynamics using mercury(II) ions
作者：
Yang, Ronghua* ;Jin, Jianyu;Long, Liping;Wang, Yongxiang;Wang, Hao;...
期刊：
Chemical Communications ,2009年(3):322-324 ISSN：1359-7345
通讯作者：
Yang, Ronghua
作者机构：
[Yang, Ronghua; Long, Liping; Tan, Weihong] Hunan Univ, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Hunan, Peoples R China.;[Yang, Ronghua; Long, Liping; Tan, Weihong] Hunan Univ, Ctr Biomed Engn, Coll Chem & Chem Engn, Changsha 410082, Hunan, Peoples R China.;[Jin, Jianyu; Wang, Yongxiang; Yang, Ronghua; Wang, Hao] Peking Univ, Coll Chem & Mol Engn, Beijing 100871, Peoples R China.;[Long, Liping] Hunan City Univ, Dept Chem & Environm Engn, Yiyang 413500, Hunan, Peoples R China.;[Tan, Weihong] Univ Florida, Ctr Res Bio Nano Interface, Dept Chem, Gainesville, FL 32611 USA.
通讯机构：
[Yang, Ronghua] H;Hunan Univ, State Key Lab Chemo Biosensing & Chemometr, Changsha 410082, Hunan, Peoples R China.
摘要：
We report that the hydrogen-bonding pattern in a molecular beacon can be replaced by metal-dependent pairs of Hg 2+ and DNA thymine (T) bases. A molecular beacon based on T-Hg 2+ -T exhibits a lower background signal and higher thermostability than regular molecular beacons. © The Royal Society of Chemistry.
语种：
英文
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疏水/亲水大孔聚二乙烯基苯/聚（N-2-氨基乙基丙烯酰胺）IPN树脂的合成及对水杨酸吸附性能研究
作者：
Xiao Guqing;Gao Shuqin;Xie Xianglin;Xu Mancai
期刊：
高分子学报 ,2008年008(11):1025-1030 ISSN：1000-3304
通讯作者：
Xiao, GQ
作者机构：
[Xiao Guqing; Gao Shuqin; Xie Xianglin; Xu Mancai] Hunan Normal Univ, Coll Chem & Chem Engn, Changsha 410081, Hunan, Peoples R China.;[Xiao Guqing] Hunan City Univ, Coll Chem & Environm Engn, Yiyang 413000, Peoples R China.
通讯机构：
[Xiao, GQ ] ;Hunan Normal Univ, Coll Chem & Chem Engn, Changsha 410081, Hunan, Peoples R China.
关键词：
疏水/亲水;水杨酸;吸附
摘要：
采用分步悬浮聚合法制备了聚二乙烯基苯/聚丙烯酸甲酯（PDVB/PMA）大孔互穿聚合物网络,将其中的聚丙烯酸甲酯用乙二胺氨解,合成了具有疏水/亲水性能的聚二乙烯基苯/聚（N-2-氨基乙基丙烯酰胺）（PDVB/PNAEAM）大孔互穿聚合物网络（IPN）;测定了该树脂的孔结构、含水量、弱碱交换量和溶胀性能;测定了该树脂对水杨酸在不同温度下的吸附等温线,利用热力学函数关系计算出了吸附焓、自由能和熵.推测PDVB/PNAEAM IPN树脂中疏水性的PDVB一网具有疏水作用吸附能力、亲水性的PNAEAM一网具有氢键作用吸附能力.动态吸附及脱附实验表明湿态PDVB/PNAEAM IPN树脂对水溶液中水杨酸的饱和吸附量达到46.1mg/mL.树脂可以通过4%NaOH溶液再生.PDVB/PNAEAM IPN树脂在分离工业废水中水杨酸等芳香有机酸有良好的应用前景.
语种：
中文
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