液氮

Vaporizers convert the liquid nitrogen to its gaseous state.

汽化器把液氮转化成气态。

The results of protein life experiment shown that tubulin can be kept in liquid nitrogen for a long period without losing its biological activity obviously.

对微管蛋白的寿命试验结果表明，微管蛋白在液氮中保存较长的一段时间，而其活性没有明显降低。

The irradiation products was transported into a special source box filled with activated charcoal at liquid nitrogen temperature. When the equilibrium distribution of gas Xe in the source box is achieved, the γ-spectrum was continuously acquired.

在反应堆中对盛装在玻璃管中的普通氙辐照96h，经一定时间冷却后，将辐照产物吸附到处于液氮温度下的特制源盒中，20 min后，待Xe气体在源盒中达到均匀分布再进行了能谱测量，以获得127Xe的准确活度值。

In this paper, a series of solid base MgO were synthesized via an exotemplating pathway with pine-wood as the template and magnesium acetate as MgO precursor, and were characterized by XRD, SEM, adsorption of n-hexane or nitrogen, Hammett indicator, ICP, JR and TG-DSC techniques.

以松木为模板，乙酸镁为前驱物，通过外模板法制备了一系列的MgO固体碱材料，并用XRD、SEM、正己烷吸附、低温液氮吸附、Hammett指示剂法、ICP、IR和TG-DSC等手段对其进行了表征。

Moreover, storage time in liquid nitrogen was not significant to the size and activity of the pollens.

同时液氮保存油菜花粉的时间长短对花粉的大小及活力影响不大。

na2samg:zinc was combined with sodium sulphide perfusion; znseamg:zinc was combined with injection sodium selenite in advanced;iznsamg:the animal's fresh tissue immersed in the timm's immersion fluid. aboved three methods were followed by the same amg method.

ivznsamg：采用na2s溶液灌流的锌离子结合方式；znseamg：采用事先注射硒酸钠的体内锌离子结合方式；iznsamg：采用取动物新鲜组织浸泡在浸染液中的锌离子结合方式；以上三种方法处理后均采用相同的amg孵育显色。tsq、zinquin荧光：均为新鲜组织取材，液氮处理后荧光下观察。

The influence rule to powder quality and quantity from some technical parameters such as materials vapor tension, gas pressure, the ratio between hydrogen and argon, current intensity and gas circulate intensity were discussed by single-factor experiment, on the base of which the perpendicularity experiment scheme was arranged.

本文采用压力模型计算出稳定弧光制粉时的气相空间温度在373K以下；从电流密度和电导率角度计算出等离子体电弧场中心温度高达5000-6500K；由此得出弱电离等离子体自由弧的自身温度场即使没有外界强制冷却，在等离子体焰区特征半径(约1.26cm)范围内的温度梯度就可达4787℃/cm，这是电弧等离子体温度场分布高度集中的具体表现，也是纳米金属粉末无须液氮冷却就能生成的本质原因，阐释了等离子体温度场自身的极大温度梯度是金属粉体纳米化的控制机制。

College of Animal Sciences, Zhejiang University , Hangzhou 310029, China Abstract: The mammary tissue from dairy cows was cultured by the roller tube culture and stationary culture (24 well plastic cul-ture plates).

以液氮冷冻泌乳奶牛乳腺组织为研究材料，对奶牛乳腺组织的旋转培养法与贴壁培养法进行了比较研究。

Frozen trimming machine, is a principle of making use of liquid nitrogen refrigeration plastic, rubber, aluminum-magnesium die-casting products, zinc fly side embrittlement happen quickly in this state, high-speed jet of plastic bullets fly percussive edge products, which not only can be highly efficient, high quality rubber products to remove fly edge products while maintaining the characteristics of itself does not change the nature of a trimming device.

冷冻修边机，是一种利用液氮冷冻原理使塑料、橡胶、铝镁锌压铸制品的飞边迅速发生脆化，在此状态下，高速喷射出塑料弹丸撞击制品的飞边，从而既能高效率、高质量地去除橡塑制品飞边同时又能保持制品本身性质特点不发生改变的一种修边设备。

The experiment shows that:(1) In certain light intensity and electric field ranges (145～305V/cm) the material Si∶ with a resistivity of 1E4Ω·cm exhibits a current oscillation phenomenon at liquid nitrogen temperature;(2) At a certain electric field,the waveform of the current oscillation is stable and does not change with time;(3) The dependence relation between the oscillation frequency and light-intensity can be expressed by f=f0(L/L0)α where L0 is the minimum light-intensity needed to stimulate oscillation,f0 is the frequency under L0,L is the intensity of the light,and α is a coefficient that increase with electric field;(4) The modulating coefficient K K=(Imax-Imin/Imax decreases as the light increases;(5) The maximum value of the oscillation Imax decreases with the increase of the light-intensity while the minimum value of oscillation Imin increases slowly.

结果表明：在一定光照和电场范围内（276～305V/cm ，电阻率为10.4Ω·cm的材料在液氮温度下显示出电流振荡特性；在一定的电场下，电流振荡波形是固定的，不随时间变化；振荡频率随光照强度的增大而线性增大；调制系数随着光强的增强而减弱；振荡的最大值随着光照强度增大而减小，最小值随着光强增大而缓慢增大。

For a big chunk of credit-card losses; the number of filings (and thus charge-off rates) would be rising again, whether

年美国个人破产法的一个改动使得破产登记急速下降，而后引起了信用卡大规模的亏损。

Eph. 4:23 And that you be renewed in the spirit of your mind

弗四23 而在你们心思的灵里得以更新