共查询到20条相似文献，搜索用时 343 毫秒
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TiO2光催化实验研究技术 总被引：6，自引：0，他引：6
提供光催化反应实验研究的实验装置及技术，依此可获得光催化降解率、反应级数、光催化反应55率常数以及活化能等一系列非常有用的动力学参数。还可依此为基础设计出新颖、实用的教学实验。 相似文献
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身份认同危机和办学宗旨偏差是专业学位研究生教育面临的两大主要问题。专业学位与学术学位在培养目标、知识基础及培养过程上具有鲜明的差别。类型、领域和方向是专业学位授予和人才培养目录体系的主要构成要素。依此目录,可增设护理、工程管理等硕士专业学位类型和公共管理等博士专业学位类型,并选择外延式和转移式并举的发展路径。 相似文献
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我国专业学位研究生教育发展规划与改革 总被引：6，自引：1，他引：5
身份认同危机和办学宗旨偏差是专业学位研究生教育面临的两大主要问题。专业学位与学术学位在培养目标、知识基础及培养过程上具有鲜明的差别。类型、领域和方向是专业学位授予和人才培养目录体系的主要构成要素。依此目录,可增设护理、工程管理等硕士专业学位类型和公共管理等博士专业学位类型,并选择外延式和转移式并举的发展路径。 相似文献
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最弱受约束电子势模型下GaⅡ离子Rydberg态能级研究 总被引：1，自引：0，他引：1
在最弱受约束电子势模型理论框架下，将Martin关于单价原子量子亏损的公式推广到了多价原子(离子)系统．本文依此计算了GaⅡ离子的4sns^3 S1和4sns^1 S0的两个类光谱能级系列的几个Rydberg态．结果与实验值符合较好．达到了较高的精度． 相似文献
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为了使学生深刻地认识氧化—还原反应的实质,我们增加了氧化—还原反应电子转移的演示实验,此实验将电子转移这一微观现象展现为宏观现象。具体实验是这样的: 相似文献
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考虑初末态电子间的关联效应,计算和分析了在共面不对称几何条件下,能量为5500eV和1500eV的入射电子碰撞He原子电离的三重微分截面,并将其计算结果与Dupre等人和Avaldi等人的绝对实验数据及其它理论计算结果进行了比较。计算结果表明:考虑初末态电子间的关联效应的理论模型能够定性地描述这样的反应过程。 相似文献
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邱崇丙 《唐山师范学院学报》2014,(1):21-23
汉字的六书,《说文》对“转注”一类,语焉不详。后世学者提及转注,也仅限于许慎所举出的例字。《汉字例说》一文,作者从转注的角度综合考虑,对部分现代常用字作了分析,跟传统的解释有所不同。希望能抛砖引玉,互相切磋,以推进学术研究。 相似文献
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Rachel Zupek 《海外英语》2007,(11):40-41
我们绝大部分人都同意一件事情——我们喜欢金钱。但是你对金钱的喜欢之情足够到让你创立一份事业么?.财富通常被人忽视,主要在于人们不能真正了 相似文献
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《海外英语》2007,(4):36
There are numbers of crossroads on our long and unpredictable life journey where we totally have no idea about which direction to choose. No matter what our decision is, we should not turn back, but face the music and go ahead instead. I am this kind of girl who always does try without regretting, one example is how I dealt with my love. 相似文献
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YANGShiguo 《重庆大学学报(英文版)》2004,3(1):86-88
The problem on the geometrc inequalities involving an n-dimensional simplex and its inscribed simplex is studied. Aninequality is established, which reveals that the difference between the squared circumradius of the n-dimensional simplex andthe squared distance between its circumcenter and barycenter times the squared circumradius of its inscribed simplex is not lessthan the 2(n-1)th power of n times its squared inradius, and is equal to when the simplex is regular and its inscribed siplex is atangent point one. Deduction from this inequality reaches a generalization of n-dimensional Euler inequality indicating that thecircumradius of the simplex is not less than the n-fold inradius. Another inequality is derived to present the relationship betweenthe circumradius of the n-dimensional simplex and the circumradius and inradius of its pedal simplex. 相似文献
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Migration occurs behind a variety of reasons and has a great effect on the whole world. People may migrate in order to improve their economic situation, or in order to escape civil strife, persecution, and environmental disasters. The impact of migration is complex, bringing both benefits anddisadvantages. This paper briefly talks about the causes of migration, the allocation of benefits, and the ways in which individual countries and the international community deal with this important subject. 相似文献
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GUO Bao-feng Xiao Da-wei 《重庆大学学报(英文版)》2005,4(3):129-133
Using virtual reality for interactive design gives a designer an intuitive vision of a design and allows the designer to achieve a viable, optimal solution in a timely manner. The article discusses the process of making the Virtual Reality System of the Humble Administrator＇s Garden. Translating building data to the Virtual Reality Modeling Language （VRML） is by far unsatisfactory. This creates a challenge for computer designers to do optimization to meet requirements. Five different approaches to optimize models have been presented in this paper. The other methods are to optimize VRML and to reduce the file size. This is done by keeping polygon counts to a minimum and by applying such techniques as object culling and level-ofdetail switching. 相似文献
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The awareness of individualism can be traced back to the period of American Revolution when the Declaration of Independence was produced.It expressed basic beliefs concerning freedom,equality,democracy,privacy and the relationship between people and government,which were exactly what the philosophy of individualism mostly dealt with at that time.This paper is to exploit the essence of individualism by analyzing the Declaration .The analysis enables us to reconsider its significance to the issue of America human rights and foreign policies. 相似文献
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Sister Carrie is one of the most controversial characters in American literature.Thought as a "fallen woman" firstly,she was defined as a "new woman" by some critics later. However, by digging into the motivaton behind the whole process of Carrie's "success", the relationship between Carrie and her creator (the author), the social conditions of then American, it can be found that Carrie has never been free-standing on her thought and she has never found her real-sdf even after becoming a famous actress. In a society dominated by mass consumerism Carrie is only an adherent of her own desires. She also is a representative of all those country girls flooded into cities, a symbol and a sacrifice of the urbanization of America in a time countryside was overcome by cities. 相似文献