高中《遗传和变异》有关题型的探讨

本文利用DNA的结构和复制特点、同源染色体、分离和自由规律以及系谱相关知识，对高中《生物》遗传和变异中常见的计算题进行了归纳和分析。     

Immunomodulatory function of orally administered thymosin α1

Objective: To investigate the immunological function of a yeast expression system for thymosin α1(Tα1). Methods: A constructed Tα1 yeast expression system was used to investigate the immunological function of orally administered Tα1. Dried yeast containing three different concentration of Tα1 was fed to normal Balb/c mice and other Balb/c mice whose immunities were inhibited in advance by cyclophosphamide. Synthesized Tα1 peptide was used as positive control and dried yeast with empty plasmid was used as negative control. CD4 and CD8 levels were detected by flow cytometry assay. TNF-α IFN-γ IL-2, IL-6 and IL-10 levels were detected by liquid chip. Results: In normal Balb/c mice or immune inhibition Balb/c mice, CD8 levels were significantly increased. Especially in immune inhibition Balb/c mice, CD8 levels in synthesized Tα1 group (18.77％±4.72％),small dose group (13.48％±6.17％) and large dose group (22.74％±1.09％) were significantly higher than that in empty yeast control group (7.49％±2.14％). Conclusion: Orally administered Tα1 has its certain immunomodulatory function.     

功能变化型重叠式的状态形容词倾向

功能变化型重叠式(见引言)有状态形容词倾向，其句法功能和表义特征都与状态形容词接近。功能变化型重叠式的状态形客词倾向有悠久的历史渊源。对功能变化型重叠式状态形容词倾向的探讨，便于从总体上把握词语重叠的功能变化，还可以深化对重叠句法功能的认识。     

Sample, Random and Variation: The Vocabulary of Statistical Literacy

This paper considers the development of school students’ ability to define three terms that are fundamental to statistical literacy: sample, random, and variation. A total of 738 students in grades 3, 5, 7, and 9 were asked in a survey to define and give an example for the word “sample.” Of these, 379 students in grades 7 and 9 were also asked about the words “random” and “variation.” Responses were used to describe developmental levels overall and to document differences across grades on the understanding of these terms. Changes in performance were also monitored after lessons on chance and data, emphasizing variation for 335 students. After 2 years, 132 of these students and a further 209 students who were surveyed originally but did not take part in specialized lessons, were surveyed again. The difference after 2 years between the performance of students who experienced the specialized lessons and those who did not was considered, revealing no differences in performance longitudinally. For students in grades 7 and 9, the association of performance on the three terms was explored. Implications for mathematics and literacy educators are discussed.     

新加坡《好儿童华文》教材的语言变异及其成因——多重认同视野下的观察

《好儿童华文》是新加坡曾经流行的一套小学华文教材,当中有许多与标准汉语不太一样的表达方式。要解释这些变异项目为何存在,需要跳出本土汉语概念的框框,跳出本土社区汉语的范围,单一变异的角度已经不能适应越来越复杂的汉语国际化及华语当地化的现实。从多重认同的角度来看,这些具有本地特色的语言项目,既是新加坡华族实现族群和国家认同的重要标志,也是新加坡华社沟通和群体认同的凭借。在处于新加坡华文教学的几对矛盾中,教材的语言变异项目有必要在其中保持平衡,予以区别对待。     

坚守与嬗变：汉民族服饰文化的变迁特征

千百年来汉民族的文化演变形成汉民族服饰文化。冕服的千年延续是对汉文化的坚守。服饰的几回交融促进了汉文化的嬗变。     

西南喀斯特地区黄荆叶片光合作用日变化的研究

选取桂林丫吉岩溶试验场优势植物黄荆（Vitex negundoL．）作为研究对象,对相同条件下黄荆叶片净光合速率（Pn）、气孔导度（Gs）、胞间二氧化碳浓度（Ci）和蒸腾速率（Tr）等光合作用特性的日变化进行了比较研究。结果表明：净光合速率（Pn）的日变化呈不对称的“双峰型”曲线,具有明显的光合“午休”现象;气孔导度曲线总体呈下降趋势;胞间CO2浓度日变化表现出单峰曲线;蒸腾速率（Tr）日变化呈不对称的双峰曲线,与净光合速率日变化基本一致,但主峰较净光合速率Pn主峰滞后1h,也出现了“午休”现象。     

英语的用词变换与翻译策略

对于需要反复提及的一个名称或概念,英语习惯于变换用词,以避免重复；而汉语倾向于重复,以求名称一致。本文试图深入系统地揭示英汉语这种用词习惯差异,并探讨英语用词变换的规律和方法,旨在说明英汉互译中如何体现这一习惯差异。     

行政诉讼中有限司法变更权之检讨

行政诉讼中赋予法院的司法变更权曾发挥了重要的作用。但随着我国法治建设的深入发展,在司法实践中,行政诉讼的有限司法变更权的缺陷逐渐凸显。在通过对司法变更权的法理分析的基础上,提出合理拓宽司法变更权的适用范围。     

医学院校生物类专业人才培养模式探讨

目前全国年产值过亿元的生物技术企业已蓬勃发展起来,未来一段时期我国对生物技术人才仍有极大需求,具有中医药背景的生物类专业人才培养是生物科技经济发展的需要。为此,结合实际对中医药背景生物类专业需求、现状和在该类人才培养过程中的经验体会进行初步探讨。