连南瑶族服饰纹样在农产品包装设计中的应用研究

在研究瑶族服饰纹样的基础上,提取服饰纹样元素,运用重组设计手法应用于农产品包装设计中,并融入消费者对包装的视觉审美,改良连南农产品包装设计方案,体现瑶族民俗文化、生活、民族精神的积淀与延续,彰显瑶族农产品包装的地域文化特色。

Nuclear assembly of purified Crythecodinium cohnii chromosomes in cell-free extracts of Xenopus laevis eggs

Incubation of dinoflagellate Crythecodinium cohnii chromosomes in cytoplasmic extracts of unfertilized Xenopus laevis eggs resulted in chromosomes decondensation and recondensation, nuclear envelope assembly, and nuclear reconstitution.Dinoflagellate Crythecodinium cohnii is a kind of primitive eukaryote which possesses numerous permanently condensed chromosomes and discontinuous double-layered nuclear membrane throughout the cell cycle. The assembled nuclei, being surrounded by a continuous double membrane containing nuclear pores and the uniformly dispersed chromatin fibers are morphologically distinguishable from that of Dinoflagellate Crythecodinium cohnii. However, incubation of dinoflagellate Crythecodinium cohnii chromosomes in the extracts from dinoflagellate Crythecodinillm cohnii cells does not induce nuclear reconstitution.

欲识文章真面目 翻转腾挪是妙着——阅读教学“变形”面面观

阅读教学中,打破文本原有形态是常用的解析策略。课堂上教师通过替换品读、调整语序、添加词句、提取重组等改变文本原有形态的变形策略,引领学生明晰、省力、神会地读懂、读好文本,进一步的揣摩、领悟文本,继而掌握运用语言文字恰当地表情达意的规律,甚而追求实现“四两拨千斤”“别有天地非人间”的教学效果。