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Cold crystallization process of N-(1-naphthyl) succinimide below glass transition temperature was monitored by differential scanning calorimetry and X-ray diffraction.

采用x射线粉末衍射和差示扫描量热分析方法,跟踪研究了N-(1-萘基)琥珀酰亚胺的液氮淬冷样品在室温(25℃)即在玻璃化转变温度以下的冷结晶行为。

Results show that the YBCO high temperature superconductive light detector, which works under the temperature of liquid nitrogen, has properties of fast response, high sensibility, good wide bandwidth and good stability.

实验表明,在液氮温度下工作的YBCO高温超导光探测器不仅具有快速响应、较高灵敏度的特点,而且具有良好的宽带特性和较好的稳定性。

Objective: To observe the effects of cryopreservation on morphology and function of rats ovarian tissues after ultrarapid freezing.

目的 探讨超速冷冻法对SD大鼠卵巢组织的冷冻保存功效。方法采用液氮直投法冷冻大鼠卵巢组织。

Objective To investigate the influence of cryopreservation on cellular viability of late pregnancy fetal valved allografts in human.

文章摘要:目的探讨液氮冷冻保存对大月龄人胎儿带瓣血管细胞活性的影响。

Objective: This study was conducted to describe the experience of using cryopreserved homografts of valved great arteries from neonates for the corrective operations of complex congenital heart diseases.

目的:本文介绍应用液氮保存的、取材于新生儿带瓣大动脉,作为婴幼儿复杂先天性心脏病矫治术中应用的经验。

At last, the new model was used to study the rule of ventless storage duration under different conditions, include different initial bulk coefficient, different heal loss rate, different tank size, etc.

最后使用本文所建立的无损储存模型对不同尺寸、不同充满率、不同漏热量下的液氮无损储存规律进行了研究,获得一些有用结论。

The most efficient method was selected and applied to RNA extraction from clinical samples of patients with vulvovaginal candidiasis.

采用人体上皮细胞与念珠菌标准菌株的混合物(106 ∶ 106),对匀浆、玻璃珠和液氮研磨三种破壁方法,纯化柱、酚两种提取方法组合产生的5种不同RNA提取方法进行比较。

Each sample was bisected into control group and experiment group.

每份标本一分为二,设新鲜对照组和冷冻实验组,实验组在液氮内保存1周后取出。

The seed were soaked in hot water under respective temperatures of 50℃, 60℃ and 70℃; soaked by concentrated sulfuric acid respectively for 5min, 10 min, 15 min and treated under ultra low temperature for 2 min, 5 min and 8 min; Then burgeoned under 15℃.

以12份从不同地区采集的达乌里胡枝子种子作为试验用种,采用不同温度(50℃、60℃、70℃)热水浸泡、浓硫酸(5min、10min、15min)浸种和液氮(2min、5min、8min)对种子进行硬实处理,在15℃温度下进行发芽试验。

The program freezing method is better than the traditional -80℃ deepfrozen method in this experiment.

程序冷冻液氮保存法优于传统的-80℃深低温保存法。

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