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Differences in biochemical responses to cold stress in two contrasting varieties of rape seed (Brassica napus L.)

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Forestry Studies in China 2007年第2期9卷 142-146页

作者： zou wang-hao Chen Yu-zhen Lu Cun-fu College of Biological Sciences and Biotechnology Beijing Forestry University Beijing 100083 P. R. China

Changes in isozymes of peroxidase, catalase, superoxide dismutase, polyphenol oxidase, and esterase and activities of per- oxidase and polyphenol oxidase in two annual Brassica varieties （AS-3 and CON, cold-tolerant and cold-sensitive, respectively） after 4℃ treatment were assayed. After the low temperature treatment, PAGE patterns of isozymes of peroxidase, catalase, superoxide dismutase, polyphenol oxidase, and esterase showed that the expressions and activities of these enzymes in the AS-3 variety were higher than the CON variety. Under normal and cold conditions, peroxidase and esterase activities of AS-3 were higher than those of CON. The relative freezing tolerance of these two cultivars was discussed.

关键词： spring rape cold stress isozyme

Diels-Alder Addition of Dicyclopentadiene with Cyclopentadiene in Polar Solvents

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Chemical Research in Chinese Universities 2008年第2期24卷 175-179页

作者： ZHANG Xiang-wen JIANG Qiang XIONG Zhong-qiang zou Ji-jun wang Li MI Zhen-tao Key Laboratory for Green Chemical Technology of Ministry of Education School of Chemical Engineering and Technology Tianjin University Tianjin 300072 P. R. China

Diels-Alder addition of dicyclopentadiene and cyclopentadiene in polar solvents has been studied to produce tricyclopentadiene（TCPD） that is a potential high-density fuel precursor. GC and MS analysis shows that the adducts contain two isomers, namely exo- and endo-TCPD. Theoretical simulation shows that although the transition state of endo-TCPD has a lower activation energy, exo-TCPD is thermodynamically preferred. Polar solvents can accelerate the reaction rate and improve the exo/endo ratio of TCPD because the transition state of exo-TCPD has a higher polarity than that of endo-TCPD. The solvent effect follows the order of polarity： benzyl methanol〉cyclohexanone〉toluene. The conversion rises when the temperature ranges from 120 to 150 ℃, but the selectivity of TCPD slightly decreases. Increasing the pressure can improve the conversion but the exo/endo ratio of TCPD is unchanged. The apparent kinetics in different solvents was determined via nonlinear regression. The activation energies are 99.47, 101.15, and 107.32 kJ/mol for benzyl methanol, cyclohexanone, and toluene, respectively. The optimal reaction conditions are as follows： benzyl methanol as solvent, temperature 150 ℃, and pressure 900 kPa. After an 11-hour reaction, a conversion of 58.0%, a TCPD selectivity of 95.7%, and an exo/endo ratio of 1/5.3 has been obtained.

关键词： High density fuel Dicyclopentadiene Cyclopentadiene Diels-Alder addition Solvent effect

Fabrication of Onion-like Carbon Using Nanodiamond by Annealing at Lower Temperature and Vacuum

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Journal of Wuhan University of Technology(Materials Science) 2009年第6期24卷 935-939页

作者：邹芹 State Key Laboratory of Metastable Materials Science and Technology Yanshan University

Onion-like carbon （OLC） was fabricated by annealing nanodiamond at 1000 ℃ for 2 hours in low vacuum （1 Pa）. The OLC was characterized by X-ray diffraction （XRD）, high resolution transmission electron microscopy （HRTEM）, Fourier transform infrared spectroscopy （FTIR）, Raman spectroscopy and differential scanning calorimetry （DSC）. The experimental results show that the OLC exhibits similarity to the original nanodiamond particles in shape. The size of the OLC is found to be approximately 5 nm. The transformation mechanism of the OLC from nanodiamond was discussed also.

关键词： nanodiamond onion-like carbon annealing

Non-self-evident ＂Legal Ideal-Picture of China＂

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Fudan Journal of the Humanities and Social Sciences 2013年第4期6卷 139-147页

作者： zou Lijun wang Feng

In Chinese discourse, there is not much critical reflection of ＂Chinese iurisprudence.＂ The publication of Chinese lurisprudence, l, Vhere to Go？：The Theoretical Outline of Constructing an Era of ＇ Chinese Legal Ideal- Picture＇ by Deng Zheng-lai adds complexity to this *** to describe and understand ＂ Chinese jurisprudence＂ is a problem that touches upon different levels with complications,

关键词：中国法律画面理想批判性复杂性并发症

Modified Approach for Establishing Filament-induced Permanent Middle Cerebral Artery Occlusion Rats and Mice Models

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Chinese Medical Sciences Journal 2011年第4期26卷 257-258页

作者： You-xin Ji Ke-tao Lan Chuan-xin Geng Xiao zou Song-ping wang Department of Medical Oncology Qingdao Central Hospital Second Affiliated Hospital of Qingdao University Qingdao 266042 China

BRAIN ischemia stroke is a devastating disease,with more than 10％ stroke patients either severely disabled or *** rodent filament middle cerebral artery occlusion (MCAO)model can mimic human brain ischemic stroke well,its wide use was restricted by difficulty in surgery,especially in ligating pterygopalatineartery (PPA).Twenty-seven male Sprague-Dawley rats were randomly divided into A,B,C groups (n=9).All the rats were performed MCAO surgery with sutures of difference *** A used 4-0 blocking suture plus ipsilateral PPA block,group B used 3-0 blocking suture plus ipsilateral common carotid artery (CCA) block,and group C used 3-0 suture plus ipsilateral PPA ***-seven male C57BL/6 wild type mice were also randomly divided into a,b,c *** a used 5-0blocking suture plus ipsilateral PPA block,group b used 6-0blocking suture plus ipsilateral CCA block,group c use 6-0suture plus ipsilateral PPA block.

关键词： SD大鼠小鼠模型动脉闭塞大脑永久性立方纤维

A new laboratory method for evaluating formation damage in fractured carbonate reservoirs

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Petroleum Science 2008年第1期5卷 45-51页

作者： Ye Yan Yan Jienian zou Shengl wang Shuqi Lu Rende Key Laboratory of Petroleum Engineering Ministry of Education China University of Petroleum Beijing 102249 China Tarim Oilfield Company PetroChina Korla Xinjiang 841000 China

Natural carbonate core samples with artificial fractures are often used to evaluate the damage of fractured carbonate formations in the laboratory. It is shown that the most frequent error for evaluation results directly from the random width characterized by the artificial fractures. To solve this problem, a series of simulated fractured core samples made of stainless steel with a given width of fracture were prepared. The relative error for the width of artificial fracture decreased to 1%. The width of natural and artificial fractures in carbonate reservoirs can be estimated by image log data. A series of tests for formation damage were conducted by using the stainless steel simulated core samples flushed with different drilling fluids, such as the sulfonate/polymer drill-in fluid and the solids-flee drill-in fluid with or without ideal packing bridging materials. Based on the experimental results using this kind of simulated cores, a novel approach to the damage control of fractured carbonate reservoirs was presented. The effective temporary plugging ring on the end face of the simulated core sample can be observed clearly. The experimental results also show that the stainless steel simulated cores made it possible to visualize the solids and filtrate invasion.

关键词： Formation damage fracture width image logging ideal packing simulated fractured cores

Treatment on the electronic energy bands of the helix-symmetrical polymers（n1）by LCAO/TO—LCTO/HO—LCHO/PO

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Chinese Journal of Chemistry 1985年第3期3卷 181-193页

作者： wang zou-Xin CAO Wei-Liang Department of Chemical Engineering,Beijing Institute of Chemical Technology,Beijing Department of Chemical Engineering Beijing Institute of Chemical Technology Beijing

Helix-Symmetrical polymer possesses not only translation symmetry but also *** the basis of this kind of symmetry,a new linear combination method named as LCAO/To-LCTO/HO-LCHO/PO has been established to derive the secular equation for this kind of *** such a manner,the order of secular equations can be reduced from n×P to P（where n isthe number of atomic orbitals in each translational unit,and P is the same number but in eachhelical unit）,thus cbtaining the maximum factorization of the secular equations and favoring thesymmetrical analysis of the *** computational program corresponding to the EHMOscheme was edited for calculating the helix-symmetrical *** principle,this treatment can be applied to the other quantum chemistry *** and polyacetylene as examples,the energy bands with 21,31and 41helical comformationswere calculated by the computional *** discussions on the influence of the variation ofcomformations to energy bands and the related physical and chemical properties were given.

关键词： Treatment on the electronic energy bands of the helix-symmetrical polymers LCHO/PO

Modeling and Simulation of Supercavity with Inertial Force in the Horizontal Curvilinear Motion

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China Ocean Engineering 2014年第1期28卷 31-42页

作者：邹望于开平 R.E.A.Arndt 张广 School of Astronautics Harbin Institute of Technology Saint Anthony Falls Laboratory University of Minnesota

To make a curvilinear motion in the horizontal plane is one of the most contents for realizing the maneuverability of the supercavitating vehicle. It is significant to achieve the controllability and maneuverability of the vehicle in three dimensions both theoretically and practically on research. Models of angle of attack, gravity and inertial force effects on the supercavity in the horizontal curvilinear motion are established, respectively. The supercavity is simulated based on these models in combination with Logvinovich model and the unsteady gas-leakage rate model at the given ventilation rate, and the effect of the inertial force on it is analyzed numerically. Results show that the maximum deviation of the center line of the cross section of supercavity towards the outward normal direction of its trajectory increases as the cavitation number or curvature radius decrease and always occur in the tail because of the increase of inertial effects along the axis of supercavity from the cavitator when other models and flow parameters are constant for the given trajectory curvature. For the variable curvature, the supercavity sheds due to its instability caused by the time-varying angle of attack. The deviation increases along the length of supercavity if the curvature remains the same sign.

关键词： supercavity inertial force curvilinear motion curvature rodius

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城市公共空间环境整治与经济的相关性研究

城市规划汇刊 2000年第5期 63-68页

作者：王佐清华大学建筑学院

文章通过对西方发达国家城市改造历程及其经济背景的阐述分析 ,结合部分国家城市环境整治的经济政策和实践进行研究 ,阐述了城市公共空间环境整治与经济发展的相关性 ,提出当前我国城市经济发展形势呼唤环境整治的城市改造方式。

关键词：环境整治城市经济城市公共空间