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Preparation and Identification of Angelica sinensis Polysaccharide-iron Complex

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Chemical Research in Chinese Universities 2005年第6期21卷 668-672页

作者： WANG Kai-ping zhang yu DAI Li-quan Faculty of Pharmacy Tongfi Medical College Huazhong University of Science and Technology Wuhan 430030 P. R. China

Angelica sinensis polysaccharide（ASP） was extracted from Angelica sinensis by boiling water. An Angelica sinensis polysaccharide-iron complex（APC） was prepared under the alkaline condition by adding a ferric chloride solution to the ASP solution. Then some identifiable properties of the complex were studied. The content of iron（ Ⅲ ） in the complex was determined with iodometry. The thermal property, the microscopic structure, the spectral characteristics, and N, C, H contents of the complex were examined by a variety of techniques including DSC, TEM, IR, NMR, and elemental analysis. The content of iron（ Ⅲ ） in the complex ranges from 10% to 40%. The DSC result shows that the melting point of the complex is about 450 ℃. The TEM result shows that the complex has an iron（ Ⅲ ） core（β-FeOOH core） linked by hydroxy and oxy bridges, with the polysaccharide chains attached to the surface of the core. The IR and NMR results also show that there is a β-FeOOH core in the complex. The elemental analysis shows that the contents of N, C, H in the complex are, respectively, lower than those of N, C, H in ASP. All our studies indicate that the APC consists of a β-FeOOH core surrounded by ASP.

关键词： Preparation Identification Angelica sinensis polysaccharide Angelica sinensis polysaccharide-iron complex

Broadband channel measurement and analysis

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The Journal of China Universities of Posts and Telecommunications 2006年第3期13卷 24-28页

作者： zhang Ming zhang Jian-hua JIANG Jun zhang ping WU yu-fei Wireless Technology Innovation Labs (WTI) Beijing University of Posts and Telecommunications Beijing 100876 China

An outdoor propagation measurement campaign for beyond 3G （B3G） as well as a wide-band indoor measurement campaign have been performed recently in Beijing, China, in which the sounding signals are transmitted by an one-antenna base station and received by a two-antenna mobile receiver operated at 3.49～3.51 GHz bandwidth. Different scenarios： stationary line-of-sight （LoS）, stationary non-LoS （NLoS） scenarios, and dynamic NLoS are deliberately chosen in a classic urban environment and office environment. The initial results are presented in this article. Parameters including vector channel impulse response, path loss, rays number, excess delay spread etc. are extracted, analyzed, and briefly reported here.

关键词： Broadband measurement Beyond 3G path loss,multipath delay rays number

Independently Tunable Multichannel Filters Based on Graphene Superlattices with Fractal Potential Patterns

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Chinese Physics Letters 2012年第12期29卷 239-242页

作者： zhang Hui-yun zhang yu-ping GAO Ying YIN Yi-Heng Qingdao Key Laboratory of Terahertz Technology College of ScienceShandong University of Science and TechnologyQingdao 266510

An independently tunable multichannel filter based on graphene superlattices with fractal potentials is theoretically *** is found that such fractal structures with a defect layer possess an unusual tunneling state occurring inside the forbidden gap,and the defect modes can be modulated by changing the width of the defect *** facts that the wave functions of defect states do not overlap and their bases are orthogonal lead to the result of the independency among the defect *** modulation of energy,energy interval and number of the defect modes may lead to potential applications in graphene-based electronic devices.

关键词： defect fractal Fractal

Controlled Fabrication of Cd-Bi Nanoparticles via Sonochemical Method

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Chemical Research in Chinese Universities 2005年第6期21卷 646-649页

作者： CHEN Hong-jie LI Sheng LI Zhi-wei WU Zhi-shen zhang ping-yu zhang Zhi-jun Key Laboratory for Special Functional Materials College of Medical Henan Univerity Kaifeng 475001 P. R. China

A sonochemical method for the direct controlled synthesis of Cd-Bi nanoparticles from a bulk Cd-Bi alloy is introduced. The nanoparticles were found to be monodispersed and the size distribution can be easily controlled by adjusting the ultrasonic power. The formation and the constituent of the as-prepared Cd-Bi nanoparticles were revealed by means of X-ray diffraction, differential thermal analysis and thermogravimetry, transmission electron microscopy, and electron diffraction. It was found that the Cd-Bi eutectic alloy nanoparticles are made of the hexagonal phase of metal cadmium and the rhombohedral phase of metal bismuth. In addition, we also found through tribological tests that the powder has an excellent antiwear property.

关键词： Sonochemistry Nanoalloy Controlling fabrication Tribology

INDUSTRIAL TRANSFORMATION OF SHENYANG CITY

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Chinese Geographical Science 2003年第3期13卷 216-223页

作者： zhang ping-yu(Northeast Institute of Geography and Agricultural Ecology, Chinese Academy of Sciences, Changchun 130012, P. R. China) Northeast Institute of Geography and Agricultural Ecology Chinese Academy of Sciences Changchun P. R. China

Industrial transformation represents a unique economic phenomenon in China’s regional economy, and old industrial city reconstruction has long been a key problem that affects state security. As a typical old industrial city in China, Shenyang established its heavy industrial city position in the First Five-year Plan period(1953-1957), and this industrial structure has been consolidated for a long time. After 1978, Shenyang began its long lasting industrial reconstruction in an all-round way by 3 main initiatives including restructuring economic system, upgrading traditional industrial technology and developing high-tech industry. In the end of the 1990s, it could be identified that remarkable structural changes took place in city economy at large as well as individual industrial sector. According to the GDP proportion change, Shenyang is on the way to a high level industrial structure. The secondary industry also engendered significant shifting as smelting and textile industry declined sharply but IT industry increased largely. Although the ratio of the heavy industry to the light industry changed periodically, the heavy industrial output value most time kept a high proportion over 60% of the gross industrial output value in the past five decades. Shenyang has favorable conditions for developing equipment manufacturing industry, but it should carry out the program by establishing its leading role in urban economy plan, building "Theme Industrial Parks", improving Tiexi Industrial Zone, removing any kind of system barrier, enlarging private and other ownerships economy and improving technology, marketing and management by IT application. In response to economy globalization, Shenyang needs to expand the cooperation worldwide and improve the cohesion with surrounding cities.

关键词： industrial transformation industrial structure urban development shenyang

BORDER PORT MANZHOULI:URBAN FUNCTION AND SPACE DEVELOPMENT

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Chinese Geographical Science 2002年第4期12卷 315-320页

作者： zhang ping-yu,MA Yan-ji,yu Zhen-han(Changchun Institute of Geography,t he Chinese Academy of Sciences,Changchun 130012,P.R.China) Changchun Institute of Geography the Chinese Academy of Sciences Changchun P. R. China

Manzhouli is the largest land port city on the Sino-Russia border,transit cargo through the land port amount -ed to 5.95million tons,transit tour ists were 304500in *** stands at the joint place of China,Mongolia an d Russi-a,faces to Siberia area of Russia,re ceives direct support from the North east China and Bohai Sea Rim Area,and possess-es priorities in geographical location,land port infrastructure,wate r resources,coal resources,touris t resources and great potentiality in economic coop eration with *** future urban function is a key port on the First Eurasia Continen-tal *** Port will keep its first place between China and Russia land transport,and it is forecasted that the transit amount through Manzhouli Port will go up to 10million tons in 2005and 20million tons in *** will be construct-ed to be a trade center of the peripheral area extending to Russia and Mongolia,a key export-oriented processing industri-al zone supported by industries such as export processing industries,export agriculture,trade services,t echnology trad-ing and the other service *** keeps being a well-known touring city for trade,shopping,sightseeing,vocation,local food,recreation and cultural *** build Manzhouli Export Pr ocessing Industry Zone will improve city econom-ic structure,and the main sectors are organic food processing,livestock products processing,garment and f urniture ***,Manzhouli Export Pro cessing Industry Zone will eventually be upgraded to be a border free trad e *** city functional transition will inevitably affect urban spatial restructure and its *** city space transforma-tion will develop as such:one develo pment axis of No.301highway paralle ling with Bin -Zhou(Harbin -Manzhouli)rail-way which cuts through central part o f Manzhouli City,and links Zhalainuoer District with central city;thre e urban units including central city,Zhalainuoer District and Manzhouli Interchange Trade Zone;coh

关键词： manzhouli land port city development sino-russia border trade

Synthesis and characterization of arsenate antimonic acid AAAc(1 : 1)

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Journal of Central South University of Technology 2005年第z1期12卷 76-81页

作者： WANG Xue-wen CHEN Qi-yuan YIN Zhou-lan zhang ping-min WANG yu-wen School of Metallurgical Science and Engineering Central South University Changsha 410083 China School of Chemistry and Chemical Engineering Central South University Changsha 410083 China School of Chemistry and Chemical Engineering Central South University Changsha 410083 China School of Chemistry and Chemical Engineering Central South University Changsha 410083 China Chemistry Department Jinggangshan Normal College Ji''an 343009 China

The AAAc(1 : 1) was synthesized in water by As2O3 and Sb2O3 with molar ratio of 1 : 1: AAAc(1 : 1)was characterized by Raman, IR, TG/DTG, DSC, XPS and XRD. The results show that there are four peaks to vsof As-OH, As-O-Sb, Sb-OH and Sb-O-Sb in Raman spectra of AAAc(1 : 1) at 100 - 1 000 cm-1. The solution of AAAc(1 : 1) was also titrated with KOH solution. The titration results show that AAAc(1 : 1) is a hexabasic acid with dissociation constants of k1 = 3.62 × 10-2 , k2 = 3.05 × 10-3 , k3 = 6. 43 × 10-6 , k4 = 9. 78 × 10-8 ,k5 = 1.32 × 10-11 , k6 =3.87 × 10-12. AAAc(1 : 1) has a good solubility and stability in water, its solid obtained by free volatilizing water from its solution under air at ambient temperature is amorphous. Chemical and thermal analyture of AsO ( OH )2-OH-Sb ( OH )4-O-Sb ( OH )4-OH-AsO ( OH )2 or As ( OH )3-O-Sb(OH)4-O-Sb(OH)4-O-As(OH)3 (isomerism) through experimental determination and geometry optimization.

关键词： arsenic acid antimonic acid arsenate antimonic acid

Prokaryotic Expression,Purification,Antibody Production of a NH_2-Terminal Fragment of mCLCA3 Protein and Analysis of mClCA3 Protein Expression in Asthmatic Mouse Lung

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Chemical Research in Chinese Universities 2007年第6期23卷 688-692页

作者： HOU Xia WU Qing-tian zhang yu-ping ZHU Na LIU Yan-li FENG Xue-chao MA Tong-hui Membrane Channel Research Laboratory Northeast Normal University Changchun 130024 P. R. China School of Basic Medicine Jiamusi University Jiamusi 154002 P. R. China

mCLCA3 is a member of calcium activated chloride channel（CACC） family that may play an important role in mucin packaging and secretion in asthmatic and cystic fibrosis lung. To study the protein structure and expression of mCLCA3 in asthmatic mouse lung, an N-terminal 269 amino acid peptide of mCLCA3 was expressed in E. coli, purified to homogeneity and rabbit polyclonal antibodies against this peptide were generated. Immunohistochemistry of asthmatic mouse lung using the antibody indicated exclusive mCLCA3 expression in mucin granules of goblet cells in airway surface and lumen, Immunoblot analysis of lavage fluid from asthmatic mouse lung revealed a single 90 kDa protein form of mClCA3. The results demonstrate that the 90 kDa N-terminal peptide, neither the flail-length protein nor the reported N-terminal 35 kDa cleaved form of mClCA3 is the major functional form involved in the packaging and exocytosis of mucin granules in asthmatic goblet cells.

关键词： mCLCA3 Prokaryotic expression Purification Antibody production Asthma

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计算机科学中的一些逻辑理论的推理性质研究

计算机学报 1999年第6期22卷 571-576页

作者：张玉平北京航空航天大学计算机科学与工程系北京100083

由于一阶谓词逻辑的基本特征是具有可靠性、完全性，在推广一阶谓词逻辑表达能力及扩充其推理能力时，可以定义一些具有可靠性、完全性的逻辑，对此，在分析逻辑理论特征的基础上，给出一些逻辑的推理系统之间相似性的实质，证明这些逻... 详细信息

由于一阶谓词逻辑的基本特征是具有可靠性、完全性，在推广一阶谓词逻辑表达能力及扩充其推理能力时，可以定义一些具有可靠性、完全性的逻辑，对此，在分析逻辑理论特征的基础上，给出一些逻辑的推理系统之间相似性的实质，证明这些逻辑在实质上并不能扩充一阶谓词逻辑的推理能力，并指出非单调推理中的缺省推理及限定推理所采用的技术是扩充时必需的．

关键词：计算机科学逻辑理论推理性质模型论