草苁蓉花序多糖BJⅡa的分离提纯与结构研究

利用溶剂提取与DEAE—Sephadex A—25柱层析进行分离,根据高碘酸氧化、Smith降解,部分酸水解、甲基化及其产物的G.C.和G.C.—M.S.联机分析鉴定其结构.得出BJⅡa是多分枝结构的中性杂多糖,其主链是由1→2连接的葡萄糖和岩藻糖构成。     

生物膜法处理洗漂废水工程的设计与运行

文章以6000m3/ d 的洗漂废水处理厂为例,阐述了运用生物膜法处理工程的设计与运行. 说明了生物膜法对洗漂废水的处理是非常成功的. 采用此方法,具有处理效果稳定,挂膜时间短等特点. [1 ]     

高Tc氧化物超导体与稀土永磁材料的一点类比

本文定义了稀土元素与其它元素之间的加权平均电负性差P和加权平均原子赝势半径差Q.发现具有较好磁性能的稀土永磁材料的P,Q值点基本上分布在一个特定的狭带区范围内,而高Tc氧化物超导体的P,Q值点基本上也分布在另一个特定的区域范围内,而且这两个区域的走向基本平行.上述结果将有助于人们探索新的高Tc氧化物超导体.     

Home: A Feeling Rooted in the Heart

Culturally diverse as they are, Asian-American children and youth share quite a few features among themselves. Most of them are children of foreign-born parents who came to America during the post-1965 immigration waves. As they grow up in culturally isolated environment, they are often faced with identity crisis. The society’s racial exclusion makes them feel like “forever foreigners,” while at home or community their American frame of reference is often in conflict with parents’ traditional values. As a result, they develop a flexible concept of identification. In fact, they are a part of but also apart from the American mainstream culture.     

高等教育财政政策对入学机会和资源分配公平的促进

本研究使用2004年大学生经济情况问卷调查数据发现,在重点高校中, 来自较高收入群体的学生比例占据了明显的优势。入学机会的差距主要源自长期因素带来的学习能力上的差异。与重点高校相比,“高收费 低资助”的状况在一般院校中表现突出。这造成低收入家庭承受了较重的高等教育个人支出负担;学费对入学机会的负面影响要大于学生资助的正面促进作用。要达到促进入学机会和资源分配公平性的目标,应尽快改变一般院校中“高收费 低资助”的财政现状,普遍推行“高收费 高资助”的财政政策。     

Lecturers on teaching within the ‘supercomplexity’ of Higher Education

While a vast literature exists on students and their learning, work on lecturers and their teaching continues to lag some way behind. This paper explores the notion that the complexity of Higher Education (HE) today significantly impacts upon what goes on in the classroom through a two-tiered study. Semi-structured interviews were conducted to explore lecturers’ perceptions and experiences of teaching a specific module. Interviewees raised issues pertaining to the wider departmental, institutional and socio-political context. Consequently, focus groups were run with key people in the University to explore their perceptions of teaching and learning within the current HE climate. The findings suggest that lecturers perceive numerous external factors to impinge upon their teaching and attempt to militate against these in various ways in order to achieve ongoing enhancement of learning for students.

Evaluating the Implementation of an Olympic Education Program in Greece

The aim of this study was to develop an instrument for evaluating how an education program has been implemented. Such evaluation can provide insight into the effectiveness of a program. Examined here was the Olympic Education Program used in Greek schools since 2000. In it, students learn the history of the Olympic games and the importance of exercise for health along with the principles and values of sports and volunteerism. The evaluation instrument underlying this study addressed the following six factors: ‘facilities’, ‘administration’, ‘educational material’, ‘student–teacher relationships’, ‘educational procedures’, and ‘training’. Results indicate that the instrument, while adequate for assessing effectiveness, should be combined with advanced statistical methods.     

教师教育的发展与师范院校的转型

进入 2 1世纪后 ,随着国际化程度的加强、科学技术的发展和教育终身化潮流的来临 ,中国的教师教育呈现出高学历化和高素质要求、教师来源多元化 ,以及教师教育一体化、教师职业专业化等新的发展趋势 ,因此 ,师范院校必须不断改革 ,才能持续发展。本文首先从教师教育发展趋势的轨迹切入 ,指出师范院校在新时代中所面临的挑战 ;其次 ,着重分析师范院校战略转型的综合性及具体策略上的多元化 ;最后 ,指出在师范院校转型过程中所应注意的几个问题     

Predicting transition and adjustment to college: biomedical and behavioral science aspirants’ and minority students’ first year of college

The purpose of this study is to explore key factors that impact the college transition of aspiring underrepresented minority students in the biomedical and behavioral sciences, in comparison with White, Asian students and non-science minority students. We examined successful management of the academic environment and sense of belonging during the first college year. Longitudinal data were derived from the Higher Education Research Institute’s (HERI) 2004 Cooperative Institutional Research Program (CIRP) Freshman Survey and the 2005 Your First College Year (YFCY) Survey. Using a reformulation of the integration model (Nora, Barlow, and Crisp, 2005), we find concerns about college financing, negotiating family support and responsibility, and campus racial dynamics (perceived and behavioral) affect student adjustment and sense of integration in the first year. This study was made possible by the support of the National Institute of General Medical Sciences, NIH Grant Number 1 RO1 GMO71968-01. This independent research and the views expressed here do not indicate endorsement by the sponsor.