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山东农业大学生物化学英文课件Section F- DNA structure and replication
山东农业大学 生物化学 英文 课件 Section F DNA structure and replication
2009/12/14
山东农业大学生物化学英文课件Section F- DNA structure and replication。
冻融循环对甲壳素凝聚态结构和脱乙酰反应的影响（Effects of Freezing-thawing Cyclic Treatment on Condensed State Structure and N-deacetylation of Chitin）
甲壳素 冻融循环处理 N-脱乙酰反应
2009/11/3
甲壳素和质量分数为40%的浓NaOH溶液的混合物在-18℃和40℃条件下反复进行冻融处理，结果表明慢速冷冻加低温解冻的冻融循环处理过程中，冰晶的反复形成和重结晶能够破坏甲壳素凝聚态特别是晶态结构。经过3次冻融循环处理，可使甲壳素在NaOH溶液中完全溶解，获得甲壳素最终质量分数为4%，NaOH最终质量分数约为10%的均相溶液，为用均相脱乙酰法制备半脱乙酰水溶性甲壳素提供前提。
Crystalline Structure Properties of Bleached and Unbleached Wheat Straw（Triticum Aestivum L.）Soda-Oxygen Pulp
Cellulose crystallinity index crystallite size pulp wheat straw x-ray
2009/1/13
In this study, the crystallinity index and crystallite size of wheat straw powder, soda-oxygen pulp and soda oxygen pulp bleached with hypochlorite (H) and hypochlorite and peroxide (HP) sequences wer...
Changes of cellular structure of potato tuber parenchyma tissues during storage
parameters of cell structure parenchyma tissue of potato tuber optical confocal microscope image analysis
2014/2/27
The presented work is continuation of researches on cellular structure of potato tuber parenchyma tissue. It concerns changes of the potato tuber cellular structure parameters during storage. Tubers o...