生物组织冻融特性的初步实验研究  

Freezing-thawing Characteristics of Biologic Tissues and Influence of Water Morphology

作　　者：马渊[1] 吴海玲[1] 彭晓峰[1] 

机构地区：[1]清华大学热能工程系,北京100084

出　　处：《应用基础与工程科学学报》2004年第1期55-60,共6页Journal of Basic Science and Engineering

基　　金：国家自然科学基金(编号:50136020);中国博士后科学基金(编号:18152)

摘　　要：以几种典型生物材料为对象,对生物组织冻融过程中的传递现象和界面特性进行可视化实验观测,着重考察冰晶生长及其界面的推进情况,应用微CT技术研究生物组织冻融前后内部结构变化,探讨不同生物材料和冷冻条件下冻融特性的差异。在实验观测的基础上,定性分析了生物组织中水分存在形态对冻融过程特性的影响。A series of visualization experiments were conducted to investigate the transport phenomena and interface behavior during freezing-thawing processes of typical biologic tissues. Attentions were focused on the growth of ice crystals and the advancing of the phase-change interface. The tissues were scanned by Micro-CT before freezing and after thawing to investigate the inner structures. Comparison was made to identify freezing/thawing behaviors for different tissues under various freezing conditions. Based on experimental observation, the investigation was conducted to explore the influence of moisture morphology on the freezing/thawing characteristics.

关 键 词：生物组织 冻融特性 传递现象 冰晶生长 微CT 生物材料 显微可视化 水分形态 生物工程 

分 类 号：Q81[生物学—生物工程]