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The Photodestruction of Virus in Nano-TiO_2 Suspension

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Journal of Wuhan university of Technology(Materials Science) 2007年第3期22卷 422-425页

作者：徐瑞芬 college of Materials Science and Engineering Beijing University of Chemical Technology

Hepatitis B surface antigen （HBsAg） was selected as reference to evaluate the photodestructive effect of a self-prepared nano-TiO2 on viruses in aqueous suspension through sandwich ELISA assay （an in vitro enzyme immunoassay） under different conditions, and more general experiments on RNA （ribonucleic acid） and casein were carried out. Results indicate that TiO： is destructive at least to most viruses in water. The mechanism of destruction was discussed.

关键词： nano-TiO2 photodestruction HbsAg virus

表面声波在一维电子通道中诱导产生的声电电流

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四川大学学报（自然科学版） 2004年第3期41卷 598-602页

作者：高宏雷盛钢李玲高洁四川大学物理科学与技术学院成都610064

表面声波(SAW)在GaAs/AlxGa1-xAs异质结表面上沿由分裂门产生的准一维电子通道方向传播时,在通道中可诱导产生声电电流.根据准经典(WKB)近似,计算出一维电子通道钳断情况下的量子化声电电流,并详细讨论了源漏偏压和库仑相互作用对声电... 详细信息

表面声波(SAW)在GaAs/AlxGa1-xAs异质结表面上沿由分裂门产生的准一维电子通道方向传播时,在通道中可诱导产生声电电流.根据准经典(WKB)近似,计算出一维电子通道钳断情况下的量子化声电电流,并详细讨论了源漏偏压和库仑相互作用对声电电流的影响.

关键词：表面声波准一维电子通道量子阱声电电流

Geological Anomaly of china

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Journal of Earth Science 1995年第1期14卷 97-106页

作者： Zhao Pengda(Faculty of Earth Resources,china university of Geosciences, Wuhan 4.0074.Wang Jinggui Rao Minghui Li Haochang(Department of Geology, East china college of Geology, Fuzhou 34.000)

Geological anomaly is a geological body or geological body combination different from its surroundings in composition, structure, or genetic sequence. If there is a value (value interval ) that works as a valve representing the background field, exceeding or lower than the valve value,it is called a geological anomaly. Geological anomalies can be divided into high geological anomaly and low geological anomaly .The former shows the area that is more complex in composition, Structure or genetic sequence than its surroundings; while the latter just gives an opposite indication, i. e. much simpler. According to their distribution and delimitation markers, geological anomalies can be classified into (1)global geological anomaly; (2)regional geological anomaly; (3) local geological anomaly; (4. minor geological anomaly and (5)micro-geological anomaly .The methods for delimiting geological anomalies include (1)crustal elevation-subsidence coefficieat (G value ) determination; (2) geological complex coefficient (C value ) determination; (3) entropy (H value ) determination; (4. geological similarity coefficient (S value ) determination and (5 ) geological correlation coefficient (R value ) determination. As the result of the movements of Eurasian, Pacific and Indian Plates, the Chinese geological anomalies, including 11 regional ones and 32 main local ones, most Paleozoic in age, are distributed in strip on the margin or the outer and inner folded zones in the east and west arcs of the block symmetric arc tectonic system (BSATS), which controls the distribution of various minerals in china. Thus, geological anomaly theory is of great significance in searching for large, super-large and very large ore deposits.

关键词： geological anomaly delimitation of geological anomaly distribution of geological anomaly block symmetic arc tectonic system genetic analysis metallogenic analysis.

TESTS AND APPLICATIONS OF A BOUSSINESQ MODEL WITH AMBIENT CURRENT

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Journal of Hydrodynamics 2010年第4期22卷 526-536页

作者： ZHANG Hong-sheng WANG Wei-yuan FENG Wen-jing WANG Ya-ling YANG Jian-min State Key Laboratory of Ocean Engineering Shanghai Jiao Tong University Shanghai 200240 China Shanghai Water Planning and Design Research Institute Shanghai 200232 China college of Transport and Communications Shanghai Maritime University Shanghai 200135 China

A new type Boussinesq model is proposed and applied for wave propagation in a wave flume of uniform depth and over a submerged bar with current present or absent,***,for the propagation of monochromatic incident wave with current absent,the Boussinesq model is tested in its complete form,and in a form without the introduction of utility velocity *** is validated that the introduction of utility velocity variables can improve the characteristics of velocity field,dispersion and *** versions of the Boussinesq models are of higher accuracy than the fully-nonlinear fourth-order model,which is one of the best forms among the existing traditional Boussinesq models that do not incorporate breaking mechanism in one ***,the Boussinesq model in its complete form is applied to simulating the propagation of bichromatic incident waves with current present or absent,respectively,and the modeled results are compared to the analytical ones or the experimental *** modeled results are reasonable in the case of inputting bichromatic incident waves with the strong opposing current present.

关键词： Boussinesq model ambient current wave-wave interactions velocity field bichromatic incident waves

厄米-高斯光束通过失调光学系统的变换和偏心厄米-高斯光束

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中国激光 2002年第3期29卷 223-226页

作者：丁桂林吕百达四川大学激光物理与化学研究所四川成都610064

使用广义惠更斯菲涅耳衍射积分 ,增广矩阵和Wigner分布函数方法 ,研究了厄米高斯光束通过失调一阶ABCD光学系统的传输特性。证明了在失调光学系统的作用下 ,厄米高斯光束不保持封闭性。失调一阶ABCD光学系统的作用使出射光束变为更... 详细信息

使用广义惠更斯菲涅耳衍射积分 ,增广矩阵和Wigner分布函数方法 ,研究了厄米高斯光束通过失调一阶ABCD光学系统的传输特性。证明了在失调光学系统的作用下 ,厄米高斯光束不保持封闭性。失调一阶ABCD光学系统的作用使出射光束变为更一般的具有偏心性质的厄米高斯光束 ,称其为偏心厄米高斯光束 ,通常的偏心高斯光束可看作本文研究的偏心厄米

关键词：偏心厄米-高斯光束失调光学系统传输特性 Wigner分布函数变换

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基于全球价值链视角的农民增收途径研究

生态经济(学术版) 2010年第2期 168-170页

作者：刘伟成都理工大学工程技术学院

近年来,全国城镇居民人均可支配收入与农村居民人均纯收入的差距继续扩大,如何增加农民收入,缩小城乡差距,成为当前亟需解决的问题。文章从全球价值链这一新视角,探索增加农民收入的途径,为政府提供理论参考。

关键词：全球价值链农民途径

DEGRADATION DUE TO ENERGY PULSE IN HIGH-ENERGY ZnO VARISTORS

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Journal of Central South university 1997年第2期9卷 113-116页

作者： Zhang Shugao Huang Baiyun Fang Xunhua (Powder Metallurgy Research Institute, Central South university of Technology, Changsha 4.0083, china)Ji Youzhang (Institute of Plasma physics, Chinese Academy of Sciences, Hefei 230031, china) Powder Metallurgy Research Institute Central South University of Technology Changsha 410083 China Institute of Plasma physics Chinese Academy of Sciences Hefei 230031 China

The degradation phenomena due to the energy pulse in the high-energy ZnO varistors used for deexitation and overvoltage protection of hydroelectric generator are investigated. The energy pulse, obtained by releasing the energy stored in an inductor, can be equivalent to the combination of the DC field components and the energy component. The variations of the characterized voltages, nonlinear coefficients and pre-breakdown V-A characteristics, increase with the number of the applied energy pulse. The asymmetrical variations of the electric properties of the high-energy ZnO varistors after the energy pulse arise from the deformation of the double Schottky barriers due to the ion migration occuring in the depletion layer and in the grain boundary.

关键词： high-energy ZnO varistors energy pulse degradation V-A characteristics grain boundary barrier ion migration

Discovery of eclogite and its geological significance in Qiangtang area, central Tibet

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Science Bulletin 2006年第9期51卷 1095-1100页

作者： LI Cai1, ZHAI Qingguo2, DONG Yongsheng1 & HUANG Xiaopeng11. college of Earth Sciences, Jilin university, Changchun 130061, china 2. Institute of Geology, Chinese Academy of Geological Sciences, Bei- jing 100037, china college of Earth Sciences Jilin University Changchun China Institute of Geology Chinese Academy of Geological Sciences Beijing China

Eclogite is first discovered from Qiang- tang area, central Tibet, which occurs as a lens in the high-pressure metamorphic belt comprising glauco- phane-muscovite schist and garnet-muscovite schist, along the south margin of Lungmu Co-Shuanghu Paleo-Tethys suture. A glaucophane 4.Ar/39Ar age of 220 Ma and a phengite 4.Ar/39Ar age of 221.9 Ma have been obtained from blueschists associated with eclogite. The rock consists of garnet, omphacite, amphibole, phengite, and rutile, etc, and the jadeite content in omphacite ranges from 32.7% to 38.95%. It is estimated that the temperature of the eclogite is <500℃ and pressure varies in the range of 1.56― 2.35 GPa. The discovery of Qiangtang ecologite fur- ther supports that there is a suture zone of Indo- Chinese epoch in central Qiangtang area, and is very important for discssing the evolution of the pa- leo-ocean and paleo-plate tectonics in this area.

关键词： Qianghai-Tibet Plateau Qiangtang eclogite tectonics.

Identification of secondary organic aerosols based on aerosol mass spectrometry

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中国科学：化学英文版 2010年第12期53卷 2593-2599页

作者： HUANG XiaoFeng 1,ZHAO QianBiao 1,2,HE LingYan 1,HU Min 2,BIAN QiJing 3,XUE Lian 1 & ZHANG YuanHang 2 1 Key Laboratory for Urban Habitat Environmental Science and Technology School of Environment and Energy,Peking university Shenzhen Graduate School,Shenzhen 518055,china 2 State Key Joint Laboratory of Environmental Simulation and Pollution Control college of Environmental Sciences and Engineering,Peking university,Beijing 100871,china 3 Division of Environment,Hong Kong university of Science & Technology,Hong Kong,china Key Laboratory for Urban Habitat Environmental Science and Technology School of Environment and Energy Peking University Shenzhen Graduate School Shenzhen China State Key Joint Laboratory of Environmental Simulation and Pollution Control college of Environmental Sciences and Engineering Peking University Beijing China Division of Environment Hong Kong University of Science & Technology Hong Kong China

Secondary organic aerosol (SOA) is one of the major components of aerosols in the atmosphere and has not been well understood so *** to the complex chemical composition of organic aerosols,the identification of SOA has been a hotspot and difficult issue in the field of aerosol *** study attempts to quantitatively identify SOA in winter of Shenzhen based on positive matrix factorization (PMF) *** sources were resolved and SOA was identified subsequently according to the characteristic ion fragments measured by highly time-resolved aerosol mass spectrometer *** showed that in the winter of Shenzhen the average SOA concentration was 9.4.±6.33 g/m 3,accounting for 39.9±21.8% of the total organic *** with primary organic aerosol (POA),the SOA concentrations had no large variation,suggestive of characteristics of regional secondary *** ratio of SOA/BC had pronounced diurnal variation,similar to that of O x (O3+NO2),indicating SOA formation was significantly controlled by activity of photochemistry in the *** most effective period for SOA formation was from 9 am～3 pm since the SOA/BC ratio increased by 122% during this *** study provides a new technical method and a new idea for SOA investigation.

关键词： secondary organic aerosol aerosol mass spectrometry positive matrix factorization (PMF)