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  • 呼吸商(respiratory quotient,RQ)

    呼吸商(respiratory quotient,RQ)

    亦称呼吸系数。植物组织或器官在一定时间内,呼吸作用释放二氧化碳的体积对吸收分子氧的体积之比或摩尔数之比:   不同底物在完全氧化时的RQ不同。糖为1;脂类分子

    2025-04-17 40
  • 天麻疗效奶糖

    天麻疗效奶糖

    天麻奶糖是根据古方天麻丸配方,以我国名贵药材天麻、川芎为主料,用现代科学方法提取有效成分,配制成天麻奶糖药料。天麻、川芎具有补脑安神、降压保肝、抗菌等作用。该奶

    2025-04-17 39
  • Microwave-Assisted Solid-Phase Peptide Synthesis Based on the Fmoc Protecting Group Strategy (CEM)

    Microwave-Assisted Solid-Phase Peptide Synthesis Based on the Fmoc Protecting Group Strategy (CEM)

    Microwave-assisted peptide synthesis has become one of the most widely used tool

    2025-04-17 32
  • Western Blotting as a Diagnostic Method

    Western Blotting as a Diagnostic Method

    Protein blotting, the transfer of proteins from a separating gel onto a thin uni

    2025-04-17 29
  • Lipid analysis:EXTRACTION OF LIPIDS FROM LIPOPHORIN

    Lipid analysis:EXTRACTION OF LIPIDS FROM LIPOPHORIN

    Lipid analysis EXTRACTION OF LIPIDS FROM LIPOPHORIN The method of choice is a

    2025-04-17 33
  • Epitope Mapping by Surface Plasmon Resonance in the BIAcore

    Epitope Mapping by Surface Plasmon Resonance in the BIAcore

    The BIAcore (biomolecular interaction analysis) analytical system consists of a

    2025-04-17 32
  • The Proprotein Convertases, 20 Years Later

    The Proprotein Convertases, 20 Years Later

    The proprotein convertases (PCs) are secretory mammalian serine proteinases rela

    2025-04-17 21
  • Purifi cation of Multiprotein Histone Acetyltransferase Complexes

    Purifi cation of Multiprotein Histone Acetyltransferase Complexes

    The reversible acetylation of specific lysine residues on core histones regulate

    2025-04-17 25
  • 杂交育种(cross breeding)

    杂交育种(cross breeding)

    以基因型不同的果树种或品种进行交配或结合长成杂种,通过培育选择,获得新品种的方法。杂交育种是选育新品种主要途径,是近代育种工作最重要的方法。由于杂交引起基因重组

    2025-04-17 37
  • 维生素(Vitamins)

    维生素(Vitamins)

    维生素(Vitamins)  维生素是维持人和动物机体健康所必须的一类营养素,本质为低分子有机化合物,它们不能在体内合成,或者所合成的量难以满足机体的需要,所

    2025-04-17 28
  • 质量守恒定律

    质量守恒定律

    参加化学反应的各物质的质量总和,等于反应后生成的各物质的质量总和。也就是说,在化学变化中,反应物的总质量等于生成物的总质量。化学变化只能改变物质的组成或结构,但

    2025-04-17 24
  • 种内关系

    种内关系

    种内互助:是同种个体之间相互协调,互惠互利的一系列行为特征。有利于取食、防御和生存。如成群的牛可以有效地对付狼群的攻击等。种内斗争:强调了同种个体之间由于食物、

    2025-04-17 30
  • 存活曲线(survivorship curve)

    存活曲线(survivorship curve)

    以存活数为纵坐标,以年龄为横坐标而画成的曲线,可反映种群的死亡过程。有三种基本类型(如图):A型,凸型存活曲线,表示种群在接近生理寿命前只有很少个体死亡,即绝

    2025-04-17 33
  • ppm浓度

    ppm浓度

    用溶质质量占全部溶液质量的百万分比来表示的浓度,叫做ppm浓度。ppm浓度即百万分比浓度(10 -6 )。 ppm 是由英文名称(part per millio

    2025-04-17 28
  • In Vitro Selection From Combinatorial Nucleic Acid Libraries

    In Vitro Selection From Combinatorial Nucleic Acid Libraries

    Since the early 1990s, combinatorial deoxyribonucleic acid and ribonucleic acid

    2025-04-17 27