共查询到20条相似文献，搜索用时 78 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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罗艳萍 《读与写:教育教学刊》2008,5(6)
The communication of people partially is the communication of cultures. Culture has a direct effect on international commercial activities in all aspects. Different conceptions about time, space, equality, law and the like, lead people to deal with things in different ways. So to know cultures of the counterpart is to facil-itate our enterprises so as to have a smooth and successful communication in commercial activity. 相似文献
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Richard Denner 《海外英语》2007,(4):14-15
Rosco and I wait for the fishermen to return.I sit at a wooden bench near the store at Mt.Baker Resort and watch the clouds change shape. Rosco has my belt around his neck and an eight foot tow chain hooked to a tree. Dogs must be on a leash. Ducks and rabbits are loose. 相似文献
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Given a graph G,a subgraph C is called a clique of G if C is a complete subgraph of G maximal under inclusion and |C|≥2. A clique-transversal set S of G is a set of vertices of G such that S meets all cliques of G. The clique-transversal number, denoted as TC (G), is the minimum cardinality of a clique-transversal set in G. The clique-graph of G, denoted as K (G), is the graph obtained by taking the cliques of G as vertices, and two vertices are adjacent if and only if the corresponding cliques in G have nonempty intersection. Let F be a class of graphs G such that F={G|K(G) is a tree}. In this paper the graphs in F having independent clique-transversal sets are shown and thus TC (G)/|G|≤1/2 for all G ∈ F. 相似文献
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《海外英语》2007,(5):10-11
Many college freshmen arrive woefully unprepared to do college work, and as disadvantaged populations continue to grow, the share of the American work force that has made it through college is expected to plummet. Many experts blame that educational failure not just on high schools but also on colleges. School & College, a special report by The Chronicle, looks at efforts to fix the system. What reforms would better prepare students for college? What should schools and colleges be doing differently? How should state and federal officials help? 相似文献
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陈美曦 《山东教育学院学报》2008,23(2):103-107
Different nations have different social cultures, and the social culture of every nation is developing with the development of the nation, language is greatly influenced by social culture, which enables language to possess national and historical characteristics. Word is the smallest, independent, meaningful linguistic unit of language. It can well reflect the national and historical characteristics. From synchronic aspect, the social and cultural influence on word meaning is mainly embodied in conceptual and associative meanings of word. The incorrespondence of word meaning is a phenomenon that exists in both conceptual and associative meanings of word among different languages. From diachronic aspect, the development of social culture causes some changes of word meaning to some extent. Therefore, social culture plays a key role in vocabulary learning and mastery of a language. 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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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