Study of Cellular Experiment of Electric Pulse Imposed on Cancer Cell

The objective of the study is the cytocidal and inhibitory effect of energy-controllable pulse on ovarian cancer cell line SKOV3.Ovarian cancer cell suspension were treated by electric pulse with different parameters,.The inhibitory rate(IR) was assayed by modified colorimetric MTT methods,the growth curves of two test groups and one control group were also measured.and the ultrasturctureal changes were observed under electron microscopy(EM) and scan electron microscopy (SEM),It was found that the treated SKOV3 cell proliferated more slowly.IR was increased with the enhancement of pulse paramters,The ultrastructural study showed that morphological changes occured obviously.Swollen mitochondria,fracutured ridges,cytoplasmic vacuoles and membrane holes appeard in most of the processed cells,and a part of bilayer membrane was ruptured.It is indicated that irreversible electric breakdown occurred in some of the treated cells,and the electric pulse could kill cancer cell and inhibit its recovery and growth.     

An Analysis of the Thematic Role of Hemingway＇s Women Characters

Hemingway＇s women characters are the indispensable portions of his novels. We can＇t imagine how l-lemingway＇s works would be going to be without those true-to-life women characters. In this paper I will women characters contribute to his works. talk about how Hemingway＇s the expression of the theme of     

Optimal Rapid Restart of Heuristic Methods of NP Hard Problems

Many heuristic search methods exhibit a remarkable variability in the time required to solve some particular problem instances. Their cost distributions are often heavy-tailed. It has been demonstrated that, in most cases, rapid restart (RR) method can prominently suppress the heavy-tailed nature of the instances and improve computation efficiency. However, it is usually time-consuming to check whether an algorithm on a specific instance is heavy-tailed or not. Moreover, if the heavy-tailed distribution is confirmed and the RR method is relevant, an optimal RR threshold should be chosen to facilitate the RR mechanism. In this paper, an approximate approach is proposed to quickly check whether an algorithm on a specific instance is heavy-tailed or not. The method is realized by means of calculating the maximal Lyapunov exponent of its generic running trace. Then a statistical formula to estimate the optimal RR threshold is educed. The method is based on common nonparametric estimation, e.g. , Kernel estimation. Two heuristic methods are selected to verify our method. The experimental results are consistent with the theoretical consideration perfectly.     

A Comparison between the Knight of the Dark Ages and the Hanger- on of an Aristocrat of the Warring States Era

At the beginning of seven century B. C, as the conflicts between vassals were getting fierce, a bodyguard with force and courage was needed by the monarch of feudal China. Then stabber - the first type of the hanger - on of an aristocrat appeared. They served and protected their master. At the state of war they could lead soldiers to fight. At zero hour, they even threw themselves into the breach to save their master. Later came the Warring State Era - a multinational era. It became popular for aristocrats to maintain hanger - on of an aristocrat. Such as Gentleman Mengchang in the feudal state of Qi,[第一段]     

Reflections on the application of the western reproduction theory in the research into the education of China

The ＂reproduction theory＂ was conceived and born in the research into educational inequalities in Western countries. Famous as the theory is, when it is to be applied in the research into education in China, a few factors must be taken into consideration： the subjects investigated must be educational inequalities that have come into being in the context of China; a shift in theoretical approach and expression is needed, with the Functional approach as the dominant research method; in terms of the standpoint of the researcher, whose academic mission and realization of social ideals should be closely and fully integrated; in terms of research method, the principle of combining both the macroscopic and microscopic approaches and analysis on the basis of actual facts should be adopted so as to effectively analyze and solve the problems plaguing the education of China and to promote the localization of the western reproduction theory in China.     

The Overview of Domestic and Overseas Research on Influencing Factors of Students＇ Learning Disabilities for Last Decade

自美国学者柯克提出学习困难的定义以来,学习困难的研究一直受到学者们的广泛关注,国内外研究者从不同角度对学习困难进行研究,发现导致学习困难的因素是多方面的,包括生物学因素、心理认知因素、环境因素等。该文综合国内外近十年的相关研究成果,对学习困难的影响因素进行简要阐述,旨在为防治学习困难措施的制订提供依据。     

Kinetic Study of Hydrothermal Stripping from Iron-Loaded Organic Phase

The iron-loaded organic phase of naphthenic acid-isooctyl alcohol-kerosene was prepared, and the process kinetics of hydrothermal stripping of iron from the phase was studied. Several factors affecting hydrothermal stripping, such as the polymer of naphthenic acid, initial concentrations of iron and naphthenic acid, temperature and agitation time, were investigated, and based on experimental results and theoretical analysis, two kinetic models were established.The stripping rate equation suggests that the hydrothermal stripping process activation energy is 96.4 kJ·mol-1 and the stripping is controlled by hydrolysis of naphthenic complex of iron. The values calculated by the stripping fraction equation comparatively accord with the experimental data.     

The Comment on the Appeal of The Knight＇s Tales

Geoffrey Chaucer was an English poet, his best known work is The Canterbury Tales. During which, Chaucer described the pilgrimage undertaken by people on horseback to the shrine of Archbishop Beckett at the Canterbury Cathedrale, with each tolling a story to pass the time. "The Knight'sTales" is one among those stories with exciting plot, and is full of turns and twists.     

Legal study on water environmental protection of Three Gorges Reservoir Area

Water environment security of the Three Gorges Reservoir Area has become a more extensive concern since the impoundment of the reservoir. This paper describes the existing water environmental hazards and defects in current legal system for water environmental protection in this area, and also discusses their possible causes and potential problems in the future based on first hand materials and other literature. According to the theories of integrated river basin management and environmental equity principle, legal proposals are put forward, which include building an unitary legal system dedicated to the Reservoir Area, setting up a basin authority of the Yangtze River to preside over the resources protection and development, using interests' compensation system to solve interest conflicts among different reaches, and making concrete regulations to direct public participation in water environmental security protection of the Three Gorges Reservoir Area.     

Literature Review of “Huainanzi” in the Late 30 Years in China

文章从《淮南子》自身的文本研究、所蕴含的思想研究以及与其他典籍关系的研究这三个方面对1979年以来的其国内研究现状做了概括性归纳,总结了三十多年的阶段性成果,并据此指出当前《淮南子》研究存在的不足之处,进而提出进一步研究的初步构想。     

A Review of Chinese Scholarship on Morrison＇s Beloved

托妮·莫里森的长篇代表作《宠儿》（1987）在莫氏荣膺诺贝尔文学奖（1993）以来一直是国内美国少数族裔文学研究的重要文本。从小说的人物形象、思想主题、艺术形式等三方面对1990年代以来国内该作品的研究进行梳理,试图较客观地把握中国《宠儿）研究的特色与态势。     

Study on Sorption of Monocrotophos and Parathion—methyl on Yellow River‘s Sediments

A study on the sorption of monocrotophos and parathion-methyl on Yellow River‘s sediments was performed.The influence of some factors,such as pH value and ionic strength,on the sorption was investigated and first order kinetics mode for the sorption of monocrophos was shown.Freundlich isotherm was suggested as the most appropriate type for monocrophos an parathion-methyl.But the sorption isotherms of monocrotophos and parathion-methyl are also in conformity with Langmuir equation.Both partition and adsorption occur to the sorption of monocrophos to Yellow River‘s sediments.but partition is the predominant for that of parathionmethyl.     

International Journal of Chinese Education征稿

《清华大学教育研究》、清华大学教育研究院与国际著名学术出版机构博睿学术出版社(Brill Academic Press)合作,编辑出版英文教育期刊International Journal of Chinese Education(IJCE),现向海内外征稿,欢迎中外学者惠赐美文佳     

International Journal of Chinese Education征稿

《清华大学教育研究》、清华大学教育研究院与国际著名学术出版机构博睿学术出版社(Brill Academic Press)合作,编辑出版英文教育期刊International Journal of Chinese Education(IJCE),现向海内外征稿,欢迎中外学者惠赐美文佳作。     

《annals of tourism research》2005～2009年文献回顾

随着旅游业的发展,旅游业相关研究受到越来越多学着的重视,相关的研究文章日渐繁多,研究角度和侧重点也日新月异。《Annals of tourism research》作为国外旅游研究的重要刊物,其刊登的文章在一定程度上反映了目前国际旅游相关研究的主要关注点。总结该刊物2005～2009年的239篇文章,其主要研究的国家为美国、英国、西班牙等11个,研究主体主要为旅游目的地、旅游者、旅游吸引物等11个。