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Chemical Research in Chinese Universities 1989年第3期5卷 212-218页

作者： Liu Benyao, Gong Ziqiu, Gu Yidong(Yihtong Ku) (department of chemistry, Fudan {2., Shanghai)

In order to investigate the influence of organic groups on the types of organoarsenic polymolybdates, the reations of p-aminophenylarsonic acid with sodium molybdate were tested at pH=3-5. Six salts were prepared and characterized. (1) (CN3H8)4 [(p-NH3C6H4As)2.o6O2.] · H2., (2. (CN3H6)4 [(p-, NH3C6H4As )2.o6O2. ] · 6H2., (3) Cs4 [(p-NH3C6H4As)2.o6O2.] · 4H2., (4) C(CH3)4N]4[(p-NH3C6H4As)2.o6O2.] · 5H2., (5) [(n-C4H9)4N]3Na[(p-NH3C6H4As)2.o6O2.] · 2.2., (6) Ba2.NH3C6H4As)2.o6O2.] · 10H2.. The IR, UV spectra, and electrochemical behavior are reported and discussed. They should belong to the same type as that for phenyl derivative or the nitrophenyl derivatives. But the ammo groups can accept protons, so that the anion' s charge decreases. Very similar to the tungsten congener (CN3H6)4[(p-NH3C,H4As)2.6O2.] · 4H2., [(RAs)2.o6O2.]4- type of complexes are formed.

关键词： p-Aminophenylarsonic acid Polymolybdates Polytungstates

A Novel Chaotic Neural Network with Anti-trigonometric Function Self-feedback

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A Novel Chaotic Neural Network with Anti-trigonometric Funct...

An Improved Synthesis of α-Phenylseleno Arsonium Ylides

2.10 Chinese Control and Decision Conference

作者： Yaoqun Xu~1,Xueling Yang~2.1.Institute of System Engineering,Harbin university of Commerce,Harbin,15002. 2.department of Mathematic,Harbin Engineering university,,Harbin,150001,China

A Chaotic neural network model with anti-trigonometric function self-feedback is proposed by introducing anti-trigonometric function into self-feedback of chaotic neural network The analyses of the optimization mechanism of the networks suggest that anti-trigonometric function self-feedback affects the original Hopfield energy function in the manner of the sum of the multiplications of anti-trigonometric function to the state,avoiding the network being trapped into the local *** energy function is constructed,and the sufficient condition for the networks to reach asymptotical stability is analyzed and is used to instruct the parameter set of the networks for solving traveling salesman problem(TSP).Simulation research on function optimization and TSP indicates that the proposed networks can find the optimal solution of combinatorial optimization problems.

关键词： Anti-trigonometric function self-feedback Chaotic neural network Energy function Asymptotical stability

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Chinese Chemical Letters 2000年第4期11卷 293-294页

作者： Gui Sheng DENG Zhi Zhen HUANG Xian HUANG (department of chemistry. Zhejiang {2. (Campus Xixi ). 34 Tianmushan Lu. Hangzhou 31002.) Zhejiang Univ Dept Chem Hangzhou 310028 Peoples R China

α-Seleno arsonium ylides 5 have been synthesized through the reaetion of α- unfunctionalized arsonium ylides 4 with almost equimolar phenylselenenyl iodide 2.

关键词： Synthesis. ylide. α-seleno arsonium ylide

Pepsin-catalyzed aldol reaction:a novel and green method for carbon-carbon bond formation

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Pepsin-catalyzed aldol reaction:a novel and green method for...

A DSC STUDY OF PHOTOPOLYMERIZATION OF POLYESTERS CONTAINING CONJUGATED DIACETYLENES

第六届全国化学生物学学术会议

作者： Chao Li,Na Wang,Xing-Wen Feng,Kun Li,Xiao-Qi Yu~* Key Laboratory of Green chemistry & Technology,Ministry of Education,College of chemistry,{2.,chengdu 610064,P.R.China

＜正＞Although it is well known that one given enzyme is able to catalyze specific reaction efficiently,some unexpected experimental results indicated that many enzymes have a promiscuous ability to catalyze distinctl...

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Chinese Journal of Polymer Science 2000年第4期18卷 351-356页

作者： Yao-wen Bai Xiao-fang Chen Dong Zhang Xin-hua Wan Qi-feng Zhou department of Polymer Science and Engineering, College of chemistry, Peking {2., Beijing 100871, China Peking Univ Coll Chem Dept Polymer Sci & Engn Beijing 100871 Peoples R China

The photopolymerization of two kinds of prepolyesters containing conjugated diacetylene (PDA-6 and PDA-12. was investigated using DSC. By measuring the endothermic enthalpy of the prepolymers after different UV-irradiation times, the polymerizations were found to follow the first-order rate law which agreed with the results of other investigators using a different method. The endothermic enthalpy measurements of PDA-6 and PDA-12.before UV-irradiation precluded the possibility that the decrease of endothermic enthalpy was caused by thermal polymerization.

关键词： diacetylene-containing polyesters DSC enthalpy

Analysis of brittle tree of complex system based on chart theory

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Analysis of brittle tree of complex system based on chart th...

A SNIFTIRS STUDY OF THE BENZOQUINONE-BENZOHYDROQUINONE REDOX SYSTEM IN AQUEOUS SOLUTION

2.09中国控制与决策会议

作者： Hongmei Wu~1,Hongzhang Jin~2.1.School of Science,Harbin Engineering university,Harbin 150001,China 2.department of Automation,Harbin Engineering university,Harbin 150001,China

＜正＞Disturbed by the inner and outside disturbance,some subsystems of complex system collapse,which may affect other subsystems because of the existing of brittle contact with collapsed subsystems and result in the whole complex system *** this paper,the brittle contact graph is founded based on the brittle contact among subsystems,and brittle source of complex system is got through the brittle reachability matrix,moreover,the brittle degree of brittle source is also got according to the transmission probability and the collapse probability of brittle *** of these,the importance of brittle source can be ***,this analysis method is applied to study the power system,and some practical results are proposed,which are meaning for preventing and controlling the collapse of complex system.

关键词： Complex system Chart Theory Brittleness Brittle source

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Chinese Chemical Letters 1991年第1期2卷 55-56页

作者： Jinkua YOU Huihuang WU department of chemistry,Xiamen {2. Xiamen 361005,Fujian

The in-situ FTIR spectroscopic results show that a hemi-ketal in- termediate may be produced in the electroreduction of benzoquinone or electro- oxidation of benzohydroquinone,which provides a valuable insight into th... 详细信息

关键词： A SNIFTIRS STUDY OF THE BENZOQUINONE-BENZOHYDROQUINONE REDOX SYSTEM IN AQUEOUS SOLUTION FTIR

Microbial Community Structure of Casing Soil During Mushroom Growth

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Pedosphere 2009年第4期19卷 446-452页

作者： CAI Wei-Ming YAO Huai-Ying FENG Wei-Lin JIN Qun-Li LIU Yue-Yan LI Nan-Yi ZHENG Zhong department of Plant Protection Zhejiang University Hangzhou 310029 (China) Horticulture Institute Zhejiang Academy of Agricultural Sciences Hangzhou 310021 (China) Zhejiang Provincial Key Laboratory of Subtropical Soil and Plant Nutrition Zhejiang University Hangzhou 310029 (China)

The culturable bacterial population and phospholipid fatty acid （PLFA） profile of casing soil were investigated at different mushroom （Agaricus bisporus） cropping stages. The change in soil bacterial PLFAs was always accompanied by a change in the soil eulturable bacterial population in the first flush. Comparatively higher culturable bacterial population and bacterial PLFAs were found in the casing soil at the primordia formation stage of the first flush. There was a significant increase in the ratio of fungal to bacterial PLFAs during mushroom growth. Multivariate analysis of PLFA data demonstrated that the mushroom cropping stage could considerably affect the microbial community structure of the casing soil. The bacterial population increased significantly from casing soil application to the primordia formation stage of the first flush. Casing soil application resulted in an increase in the ratio of gram-negative bacterial PLFAs to gram-positive bacterial PLFAs, suggesting that some gram-negative bacteria might play an important role in mushroom sporophore initiation.

关键词： cropping stage culturable bacterial population phospholipid fatty acid

Organic Solvents Enhanced Spectrofluorimetric Method for Determination of Laccase Activity

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Wuhan university Journal of Natural Sciences 1998年第1期3卷 123-125页

作者： Huang Zuyun, Liu Zhihong, Cat Ruxiu, Zeng Yun’e(department of chemistry, Wuhan {2.,Wuhan 430072. China) Wuhan university Department of Chemistry Wuhan China (GRID:grid.49470.3e) (ISNI:***)

A novel fluorimetric method for determination of laccase activity in organic solvents is proposed, based on the oxidation ofo-phenylenediamine (1,2.diaminobenzene, OPDA) catalyzed by laccase yielding 2.3-diaminophenazine. The optimal conditions for laccase in organic media areT=55°C, pH=6.5, 1.0×10?2.ol/L OPDA, 1.2. mL ethanol, 1.2. mL 1,4-dioxane and 1.2. mL acetone. The linear range of the method proposed in ethanol, 1,4-dioxane and acetone media were 0.44–19.33, 0.11–2..85, 0.38–2..05 U with the detection limit of 0.088, 0.02., 0.076 U, respectively. The proposed method has been applied to the analysis of laccase activity of real samples with more accurate and sensitive than that of the previous method reported.

关键词： Key words Organic solvent laccase activity fluorimetry o phenylenediamine (OPDA)

镨元素对(Nd,Pr)_(10.5)(FeCoZr)_(83.5)B_6合金显微结构和磁性能的影响

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中国稀土学报 2003年第6期21卷 660-663页

作者：刘颖查五生高升吉涂铭旌四川大学材料科学与工程学院四川成都610065

研究了稀土元素Pr对快淬(Nd1-xPrx)10.5(FeCoZr)83.5B6(x=0,0.2.0.4,0.6,0.8,1.0)合金显微组织结构和粘结磁体磁性能的影响。通过部分过快淬获得由非晶和微晶共同组成的条屑,在实验优化的退火条件下晶化处理后,制备出最佳磁性能的系列... 详细信息

研究了稀土元素Pr对快淬(Nd1-xPrx)10.5(FeCoZr)83.5B6(x=0,0.2.0.4,0.6,0.8,1.0)合金显微组织结构和粘结磁体磁性能的影响。通过部分过快淬获得由非晶和微晶共同组成的条屑,在实验优化的退火条件下晶化处理后,制备出最佳磁性能的系列粘结磁体。随Pr含量的增加,磁体的内禀矫顽力Hci单调上升,剩磁Br单调下降,(BH)m在x=0.6～0.8处达到最大值70.6kJ·m-3。Pr元素使合金非晶态的晶化转变温度和转化能降低,合金的显微组织结构变得较粗大和较不均匀,从而使快淬粘结磁体剩磁降低,但Pr2.e14B化合物较高的磁晶各向异性场使磁体的内禀矫顽力提高。

关键词：金属材料镨基永磁材料 Pr含量磁性能显微结构稀土 (Nd,Pr)10.5(FeCoZr)83.5B6合金