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Langmuir-Blodgett Films and Calcium Ion Coordination of Biliverdin and Its Amphiphilic Derivatives

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Chinese Chemical Letters 2001年第5期12卷 457-460页

作者： jian ming ouyang Department of Chemistry, Jinan University, Guangzhou 510632 Jinan Univ Dept Chem Guangzhou 510632 Peoples R China

Monolayer formation and LB film fabrication of amphiphilic derivative of biliverdin 1, diododecyl biliverdinamide [B(CONHC12H25)(2), 2] at an air-water interface on pure water subphase and subphase containing calcium ion were investigated and compared with 1. The coordination in ordered molecular films is much different from that in bulk solution. The formation of ligand-calcium complex was confirmed by X-ray photoelectron spectroscopy.

关键词： monolayer Langmuir-Blodgett films biliverdin calcium ion

The Effect of Potassium Citrate on Simultaneous Growth of Calcium Oxalate Mono-, Di-, and Trihydrate in Synthetic Urine

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Chinese Chemical Letters 2006年第5期17卷 687-690页

作者： Yi ming LIU Feng Xin WANG Sui Ping DENG jian ming ouyang Institute of Biomineralization and Lithiasis Research Jinan University Guangzhou 510632

The inducing effect of potassium citrate （K3cit） on simultaneous growth of calcium oxalate mono-（COM）, di-（COD）, and trihydrate （COT） crystals in synthetic urine was observed with double diffusion gelatinous technique. K3cit can induce the formation of COD and COT, inhibit the aggregation and decrease the surface area of COM crystals. It supported the clinical use of K3cit and may provide important clues to this disease in cure and in search for new drugs.

关键词： Calcium oxalate potassium citrate biomineralization urinary stone gel.

Impact of atmospheric ionization by delayed radiation from highaltitude nuclear explosions on radio communication

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Nuclear Science and Techniques 2019年第12期30卷 58-64页

作者： Heng Xu jian-ming ouyang Shang-Wu Wang Yun Liu Xu Sun College of Liberal Arts and Sciences National University of Defense TechnologyChangsha 410073China College of Physics and Micro Electronic Hunan UniversityChangsha 410006China College of Electronics Science National University of Defense TechnologyChangsha 410073China

In this study,we investigated the motion,shape,and delayed radiation intensity of a radioactive cloud by establishing a volume-source model of delayed radiation after high-altitude nuclear ***,the spatial distribution of electron number density at different moments on the north side of the explosion point generated by delayed γ-rays and delayed β-rays from the radioactive cloud under the influence of the geomagnetic field was calculated by solving chemical reaction kinetics *** impact of radio communication in the different frequency bands on the process of atmospheric ionization was also *** numerical results of the high-altitude nuclear explosion (120 km high and with a 1 megaton equivalent at 40°N latitude) indicated that the peak of electron number density ionized delayed γ-rays is located at a height of approximately 100 km and that of electron number density ionized delayed β-rays is about 90 km *** 1 min of explosion,the radio communication in the medium frequency (MF) and high-frequency (HF)bands was completely interrupted,and the energy attenuation of the radio wave in the very high-frequency (VHF)band was extremely *** minutes later,the VHF radio communication was basically restored,but the energy attenuation in the HF band was still *** 30 min,theVHF radio communication returned to normal,but its influence on the HF and MF radio communication continued.

关键词： High-altitude nuclear explosions Delayed radiation Ionization effect Radio communication

Inhibition of the Crystal Growth and Aggregation of Calcium Oxalate by Algae Sulfated Polysaccharide In-vitro

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Chinese Chemical Letters 2006年第1期17卷 97-100页

作者： Xiu Mei WU jian ming ouyang Sui Ping DENG Ying Zhou CEN Institute of Biomineralization and Lithiasis Research Department of Chemistry Jinan University Guangzhou 510632

The influence of sulfated polysaccharide （SPS） isolated from marine algae Sargassum fusiforme on the morphology and phase compositions of urinary crystal calcium oxalate was investigated in vitro by means of scanning electron microscopy and X-ray diffraction. SPS maybe is a potential inhibitor to CaOxa urinary stones by inhibiting the growth of calcium oxalate monohydrate （COM）, preventing the aggregation of COM, and inducing the formation of calcium oxalate dihydrate （COD） crystals.

关键词： Calcium oxalate sulfated polysaccharide urinary stone.

Highly Ordered LB Films of Amphiphilic Complexes With 8-Hydroxyquinoline

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Chinese Chemical Letters 1998年第10期9卷 967-970页

作者： jian ming ouyang Wei Han LING Chuan LI(Department of Chemistry, Jinan University, Guangzhou, 510632) Jinan Univ Dept Chem Guangzhou 510632 Peoples R China

Amphiphilic complexes of N-octadecyl-8-hydroxy-2-quinoline carboxamide, M (OQ)(2), form stable monolayer on pure water subphase and can be easily fabricated as highly ordered and uniform LB films, which were character... 详细信息

关键词： LB films amphiphilic ligand low-angle X-ray diffraction

Metal Ion Complexation of Bilirubin Monolayer

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Chinese Chemical Letters 1999年第6期10卷 507-510页

作者： jian-ming ouyang Chuan LI Wei Han LING Wen Jie ZHENG (Department of Chemistry. Jinan University. Guangzhou 510632) Jinan Univ Dept Chem Guangzhou 510632 Peoples R China

The surface pressure-area isotherms of bilirubin (BR) monolayers at an air-water interface on subphases with and without metal ions were investigated. The formation of BR-metal complexes leads to changes in the shape of isotherms of BR and changes in UV-visible absorption spectra of the monolayer assemblies. In XPS spectra new XPS peaks assigned to the metal ions containing subphases appeared. Low-angle X-ray diffraction indicates this Y-type LB films of MBR were formed with bilayer spacing of ca. 2.1 nm.

关键词： monolayer bilirubin complexation

Synthesis　and　Amphiphilic　Characteristics　of　8－Hydroxyquinoline　with　Alkyl　Chain

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Chinese Chemical Letters 1996年第9期7卷 807-808页

作者： jian ming ouyang Chao Yang jianG Zi Hou TAI Wen Xia TANG(State Key Laboratory of Coordination Chemisty, Nanjing University,Nanjing,210093) NANJING UNIV STATE KEY LAB COORDINAT CHEMNANJING 210093PEOPLES R CHINA

The amphiphilic derivatives of 8-hydroquinoline with alkyl chain have been *** derivatives can form stable monolayer on pure water and an aqueous subphase containing Metal ions.

关键词： Hydroxyquinoline Characteristics Alkyl

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药用女贞属植物化学成分的研究进展

天然产物研究与开发 2003年第1期15卷 77-86页

作者：周剑宁欧阳明安华侨大学生物化学系天然产物实验室福建泉州362011

在约 5 0种女贞属植物中已进行化学成分研究的有 15种。从该类植物中提取分析出一百多种化合物 ,其中大部分是结构新颖的活性化合物。主要有单萜类、三萜类、环烯醚萜类、裂环烯醚萜类、黄酮类、苯乙醇类、挥发油和其它化合物。本文综... 详细信息

在约 5 0种女贞属植物中已进行化学成分研究的有 15种。从该类植物中提取分析出一百多种化合物 ,其中大部分是结构新颖的活性化合物。主要有单萜类、三萜类、环烯醚萜类、裂环烯醚萜类、黄酮类、苯乙醇类、挥发油和其它化合物。本文综述了从该属植物中得到的各类化学成分的结构和13 C NMR谱图数据。

关键词：女贞属植物化学成分研究进展萜类黄酮类苯乙醇类药用植物

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面向能量管理的燃料电池混合动力模型辨识

系统仿真学报 2009年第17期21卷 5361-5365页

作者：徐梁飞包磊华剑锋李建秋欧阳明高清华大学汽车安全与节能国家重点实验室北京100084

燃料电池混合动力能量管理算法离线及在线优化需要建立一套有效的模型辨识方法。根据混合动力系统的部件特性,使用TTCAN数据,基于最小二乘原理建立系统辨识算法,辨识出系统模型。离线仿真结果表明,所辨识的模型能反映当前系统性能,可作... 详细信息

燃料电池混合动力能量管理算法离线及在线优化需要建立一套有效的模型辨识方法。根据混合动力系统的部件特性,使用TTCAN数据,基于最小二乘原理建立系统辨识算法,辨识出系统模型。离线仿真结果表明,所辨识的模型能反映当前系统性能,可作为能量管理算法优化的依据。为提高能量管理算法的自适应调整能力,需要将离线辨识改为在线辨识,并整合到整车控制器中。在Matlab/Simulink环境中搭建在线辨识算法,并通过自动代码生成与整车控制器底层代码无缝结合。增加了在线辨识算法的能量管理算法运行时间从原先的0.58ms提高到3.2ms,但仍然小于TTCAN网络的最小闲置时间4ms。在线辨识算法虽然增加了整车控制器运算负荷,但并未影响TTCAN通讯时序。中国城市公交典型工况测试表明,采用在线辨识算法后的系统氢气消耗从8.2kg/100km降低到7.9kg/100km,约降低3.6%。为控制燃料电池输出功率波动,进一步工作中需要将燃料电池模型加入在线辨识算法,并采用递推算法降低整车控制器计算负荷。

关键词：燃料电池混合动力系统模型辨识最小二乘法在线辨识