|
|
|
|
 | | 很抱歉,暂未找到该词条在当前类别下的译词。 您可以查看在所有学科的译词。 |
|
|  | | 没有找到相关例句 |
|

| | The application of low temperature to medicine may result in presurvation of cells and fissures in many instances,while under other circumstances it may cause cell or tissue destruction.The paper generalizes the mechanism of freezing injury in cryosur-gery,morphology of cryonecrosis and the clinical practice of freezing techniques.The problem about cryoimmunology is discussed.It is also introduced that interaction of iemprature region,cooling rales,rewarming rales and pioctective additive on survival of bio... | | 本文概述了低温外科的冷冻杀伤机理、冷冻坏死的形态学.冷冻技术在某些临床中的应用,并对冷冻免疫作了探讨。最后介绍了低温保存的温区.降温速率、复温速率、抗冻保护剂对生物材料存活率的影响。 | | 文摘来源 | | A new cooling technique using NaCl-H_2O solution or alcohol-H_2O solution as a intermediate freezing medium is developed here for biomaterial cryopreser- vation.This method can get a uniform cooling rate and a shortened postfreezing plateau which are very important for living materials passing the critical tempe- rature region (from O℃ to-40℃) withont injury. The physical-mathematical modeling and some practical analysis also are presented in this paper. | | 许多生物材料的低温保存,要求在0℃至-40℃的这段危险区内保持匀速降温,而且希望能缩短相变阶段的时间。本文分析了用程序控制降温仪或用“两步法”这二种冷却技术所存在的问题,提出了一种全新的冷却技术,这就是用浸有盐水或酒精等溶液的纱布包裹在盛生物材料的塑料袋外,然后直接放入-60℃低温箱中,经过一段时间后再放到液氮中。这种新技术不仅能使生物材料均匀降温,而且可以明显地缩短相变阶段的时间,达到了很好的低温保存效果。本文还运用传热学理论建立了该技术的物理——数学模型,并给出了对实用有指导意义的分析。 | | 文摘来源 | | A cryomicroscope equiped with video camera, video recorder and monitor was used for studying the cryopreservation of bovine embryos. The temperature, cooling and warming rate were controled by a computer. The embryos intra-ex- tracellular ice formation, melting and osmotic behaviours were analysed for o- ptimizing the survival rate and experimental methods for the cryopreservation of bovine embryos. | | 用美国麻省理工学院研制的带摄、录、显像装置及微机控温的低温显微镜观察奶牛胚胎在低温保存过程中的形态变化。研究分析了不同降温、复温速率下奶牛胚胎内、外冰晶生成、融化过程及伴生的渗透现象,为提高奶牛胚胎低温保存过程的存活率提供理论依据及实验方法。 | | 文摘来源 | |   | | << 更多相关文摘 |
|
相关查询: | |
对查询结果不满意
|
|
|