首页 | 本学科首页   官方微博 | 高级检索  
     检索      

兔主动脉冻结过程中未冻水份额的研究
引用本文:胥义,华泽钊,周国燕.兔主动脉冻结过程中未冻水份额的研究[J].工程热物理学报,2006,27(3):478-480.
作者姓名:胥义  华泽钊  周国燕
作者单位:上海理工大学低温医学与食品冷冻研究所,上海,200093
基金项目:国家自然科学基金;上海市教委资助项目;上海市学科建设项目
摘    要:利用差示扫描量热仪(DSC)技术中的分步扫描(Stepwise scanning)法,研究了不同浓度的低温保护剂对主动脉血管冻结过程中未冻水份额的影响。研究结果表明:分步扫描量热技术可以用于血管材料冻结过程中未冻水份额的定量研究,而且具有较高楠度;随着低温保护剂二甲亚砜(DMSO)浓度的增大,血管的初始冻结点温度呈线性降低,但其冻结过程的未冻水份额显著增大,这是由于高浓度DMSO具有很强水合能力所致。

关 键 词:兔主动脉  未冻水份额  分步扫描法  低温保护剂  冻结
文章编号:0253-231X(2006)03-0478-03
修稿时间:2006年1月9日

STUDY ON UNFROZEN WATER FRACTION OF RABBIT AORTA DURING FREEZING
XU Yi,HUA Ze-Zhao,ZHOU Guo-Yan.STUDY ON UNFROZEN WATER FRACTION OF RABBIT AORTA DURING FREEZING[J].Journal of Engineering Thermophysics,2006,27(3):478-480.
Authors:XU Yi  HUA Ze-Zhao  ZHOU Guo-Yan
Abstract:Stepwise scanning-DSC (SW-DSC) was employed to study the unfrozen water fraction of rabbit aorta during freezing, and the effects of cryoprotective agent (CPA) concentration were also discussed. The results show that the technology of SW-DSC can be used to determine precisely the unfrozen water fraction of rabbit aorta during freezing; and, due to dimethyl sulphoxide (DMSO) strong hydration action, the initial freezing point decreases linearly with the increasing DMSO concentration, but the unfrozen water fraction increases significantly.
Keywords:rabbit aorta  unfrozen water fraction  stepwise scanning  cryoptrotective agent (CPA)  freezing
本文献已被 CNKI 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号