液态氮

The paper discloses a process for diazotization fluorination of aromatic primary amines utilizing sodium nitrite and anhydrous hydrofluoride to produce the corresponding diazonium fluoride which is decomposed, usually by heat, to make the desired fluoroaromatics .

本文通过重氮化工艺路线的改进，在液态氟化氢中进行重氮化和重氮盐的热分解，提高了芳香族氟化物的收率，并且使重氮化反应工艺能应用于工业化生产。

The results showed that the highest yield of GLP among six strains was ShuShe.The effects of carbon source, nitrogen source, salt and the optimum initial pH value of medium on GLP produced by ShuShe were studied in liquid and solid fermentation respectively. The liquid and solid fermentive medium of high yield was selected by orthogonal experiment.

分别对液态发酵和固态发酵两种发酵方式的碳源、氮源、盐、培养基的起始pH 等对该菌株灵芝多糖生物合成的影响进行了研究，通过正交试验确定了高产灵芝多糖的液态发酵培养基和固态发酵培养基，液态发酵培养基的组成为：麦芽糖，3%；蛋白胨，0.4%；KH2PO4，0.15%；MgSO4，0.05%；培养基起始pH 为6。

Hydrazoic acid in liquid form is very dangerous.

处于液态的叠氮酸是很危险的。

The production and characterization of endoglucanase from Streptomyces xylophagus KX6 was studied. Maximum endoglucanase yield of 0.538 IU/ml was achieved with medium pH8.0, containing CMC2Na 1.0% as carbon resource, soybean meal 1% as nitrogen resource, 2% inoculating volume, 30% 250 ml triangle flask bulk for medium volume at 40℃ 200r/min shaker for 48h.

实验中对其产酶的液态发酵条件进行了研究，碳源为1%羧甲基纤维素钠，氮源为1%豆粕粉，250ml三角瓶30 %装液量，接种量为2%，培养基初始pH为8.0，培养温度为40℃，200r/min培养48h后，发酵液中内切葡聚糖酶活达到0.538IU/ml。

The results showed that oat flour and glycerol as mixed carbon source and soybean meal as nitrogen source could evidently increase Monacolin K content in fermenting liquid, and Zn2+ in liquid fermentation of Monascus ruber GM011 could also evidently increase Monacolin K yield.

结果表明，以燕麦粉、甘油为混合碳源，黄豆粉为氮源，能够显著提高发酵液中Monacolin K的含量；Zn2+在红曲菌GM011的液态发酵中同样能显著提高Monacolin K的产量。

Generally, nitrogen solubility in HNS increases with high pressure, actually it abides by Sieverts rule in low-pressure scope, a difference comes when high pressure and high content alloys elements.

氮在液态铁合金中的溶解度随温度变化存在折点，在不同相中具有不同的变化规律，但总的趋势是氮溶解度随温度升高而增大。

Containers used for transporting liquid nitrogen at less than 25 psig (40 psia) pressure are UN/DOT authorized containers.

用于运输压力小于25 psig (40 psia)的液态氮的容器是UN/DOT认可的容器。

Cryotherapy: Very cold liquid nitrogen is sprayed onto the wart to freeze and destroy the cells.

冷冻：非常冷的液态氮喷上疣冻结和摧毁细胞。

This one mode pays close attention to network credence foundation of the businessman very much.

这一模式非常关注商人的网络信用基础。

Cell morphology of bacterial ghost of Pasteurella multocida was observed by scanning electron microscopy and inactivation ratio was estimated by CFU analysi.

扫描电镜观察多杀性巴氏杆菌细菌幽灵和菌落形成单位评价遗传灭活率。