Bi2212单晶中Pb和Y的掺杂效应

采用自助溶剂固态反应法制备出Bi2212及其Ijb和Y掺杂单晶。X射线衍射图表明,除001峰外,没有杂相峰;其晶体结构参数计算表明,随着Pb和Y掺杂量的增加,晶体c-轴常数减小。c-轴方向的电阻-温度曲线则显示其超导转变温度为90K左右。     

椭圆偏振光的示波展示

从示波器X-Y,图示仪波形形成原理出发,展示了椭圆偏振光的合成图像,也分析了椭圆偏振光的左旋右旋情况,从另一角度更直观展示了抽象的椭圆偏振光的合成。     

The social adjustment of Filipino nonmigrants,emigrants, and immigrants to Hawaii

This study compared the social adjustment of a group of Filipinos who had initiated definite arrangements to emigrate to Hawaii (emigrants) with another group of Filipinos from the same communities as the emigrants who expressed no intention to emigrate (nonmigrants). These two samples were then compared with a group of recent Filipino immigrants to Hawaii. Social adjustment was measured by the Katz Adjustment Scales, relative's rating form, in terms of clusters of symptomatic and social behavior. The results showed that the immigrants in their social adjustment were less emotionally expressive than the emigrants, who were in turn, less expressive than the nonmigrants. However, significant cluster score differences obtained primarily between the Philippine samples and the immigrants, while there was a general lack of significance between the nonmigrants and the emigrants. The overall decline in the level of emotional expression of the immigrants was attributed to their adherence to the paramount Philippine value of social acceptance as their modal means of adjustment to the immigration experience. Thus, the direction and nature of changes in the emotional expression of Filipino immigrants follow from their culture and its integral norms and values rather than being derivative of processes of acculturation.     

青年教师担任兼职辅导员的优势与“Y理论”的运用

文章针对高校管理者积极选派青年专任教师担任兼职辅导员这一现状进行分析,充分肯定这一举措的优势,但目前管理者们采用的"X理论"指导管理兼职辅导员工作尚存不足,建议充分利用"Y理论"作为工作指南,认真采取有效措施,全面发挥兼职辅导员在学生思想政治教育队伍中的作用。     

从冼夫人族性谈俚人与黎族的相关性及黎族的起源

纹身绣面是黎族的图腾,冼夫人如果是黎家女,别无选择地要遵守这种风俗;黎族的起源与纹面形成的古老传说及《山海经》中有关雕题国与离耳国的记述都表明海南黎族是一个在远古时代就已经形成的独特的民族。Y染色体分析与考古挖掘都证明海南黎族已有2万年的历史,黎族与百越民族同源异族。俚人与黎族虽然同源,但因已分隔千万年,风俗各异。     

相对拓扑的一些性质

定义了相对meta紧空间、相对meta-Lindeloff空间的概念,给出了meta紧、meta-Lindeloff空间的充要条件,研究了相对meta紧、相对meta-Lindeloff空间在映射下的一些性质.