查询词典 urea

METHODS: The rhBMP-2,expressed in Escherichia coli, was washed by Triton X- 100 and further purified by DEAE chromatography.The inclusion bodies were resolved in 8 mol/L urea, and were refolded and dimerized in the redox systems (reduced and oxidized glutathione). Finally, a one - step purification procedure based on the heparin affinity chromatography was implemented. The biological activity of purified rhBMP - 2 were tested by induction of the alkaline phosphatase activity in C2C12 cells.

在大肠杆菌中通过温度诱导表达重组人骨形成蛋白-2经过Triton X-100清洗之后，又通过DEAE离子交换层析纯化包涵体，包涵体在8 mol/L尿素变性溶解，在氧化-还原(还原型和氧化型谷胱甘肽)复性系统中，通过简单的稀释复性，通过肝素亲和层析一步纯化法纯化重组人骨形成蛋白-2，最后通过诱导C2C12细胞产生碱性磷酸酶检测重组人骨形成蛋白-2活性。

Methods: Kuming mice has been employed in this experiment, which divied into several groups. the blood lactate, blood urea nitrogen and glycogen were detected after loading swimming .

方法和结果：本课题通过对实验组、对照组的雄性昆明种小鼠负重游泳后的血乳酸水平的差异与变化；实验组、对照组的雄性昆明种小鼠游泳后血清尿素氮的差异与变化；实验组、对照组的雄性昆明种小鼠肝糖原含量的差异与变化，来判定受试物是否具有抗疲劳的作用。

OHR has no toxic effect after acute toxicity test,subacute toxicity test and descendent toxicity test,it is in line with"eatables safety toxicology appreciation procedure and methods", furthermore,it could boost the level of little mice'blood urea and lactic acid,this suggest that OHR has effect in alleviating physical fatigue.

并且能提高小鼠清除血乳酸和尿素能力，提示沙棘油有缓解体力疲劳作用。

The results show that the BST is a nice nitrogenous fertilizer resources and to some extents,equal and superior to traditional nitrogenous fertilizer urea and sulphuric acid ammonia.

结果表明，BST是很好的氮肥资源，等同于或某种程度上优于尿素和硫酸铵。

With the expansion of business scale, ocean abundance of sulfur-based compound fertilizer company has built a plant, sulfuric acid plant, urea-based fertilizer plants, ammonia plants and other projects.

随着业务规模，丰富的海洋中硫的扩张复合肥公司建立了工厂，硫酸厂，尿素的化肥厂，合成氨厂等项目。

This article introduces the scheme reasoning、equipment selecting and project implementing of the Timing System Alteration for The fertilizer plant Urea device Ammonia Pump.

本文介绍了化肥厂尿素装置氨泵调速系统改造的方案论证、设备选型和工程实施。

The results show that the BST is a nice nitrogenous fertilizer resources and to some extents,equal and superior to traditional nitrogenous fertilizer urea and sulphuric acid ammonia.

结果表明，BST是很好的氮肥资源，等同于或某种程度上优于尿素和硫酸铵。对土壤的理化性质、氨态氮、硝态氮含量以及对作物吸收Ca，Mg，K等养分和生长发育的影响与常规氮肥相似。

After two rice-wheat rotations, 11%–13% of applied labeled N remained in 0-60 cm soil (mostly in the 0-20 cm soil); leaching of labeled urea applied in rice season was little (only 0.6%–1.1% of the applied N accumulated in 20-60 cm soil), and the leaching of fertilizer N occurred in wheat season and the beginning flooding period of the next rice season; 47%–54% of applied fertilizer N was lost and ammonia emission and nitrification-denitrification were the main pathways.

水稻季施用的肥料氮向耕层以下移动很少，20—60 cm土层中累积肥料氮仅占施氮量的0.6%～1.1%，主要发生在小麦季及水稻泡田时期，肥料氮损失占施氮量的47～54%，氨挥发和硝化反硝化气态损失是主要途径。

A fertilizer leak-preventing device is developed to stop fertilizer leakageon the stirring-knife-reel adjusting fertilizer distributor,especially severe when operatedwith granulated fertilizers such as urea during the non-working state of the distributor.

针对使用搅刀－拨轮式排肥器的悬挂施肥播种机在施尿素等颗粒状肥料时，非工作状态所发生的肥料严重漏失问题，研究设计了阻止漏肥装置。

As a kind of material for particleboard, it's disadvantages was mach content in SiO and weater extract,but low in fiber content and natural formed wax on the surface which made it difficule to manufacture standard product by urea formaldehyde resin.

摘 要：本论文分析了麦草原料的结构，作为刨花板原料，麦草的缺点是二氧化硅的含量高，抽提物含量高，纤维细胞含量低以及表面有自然形成的蜡质，用脲醛树脂胶难以制造出合格的产品。

I didn't watch TV last night, because it .

昨晚我没有看电视，因为电视机坏了。

Since this year, in a lot of villages of Beijing, TV of elevator liquid crystal was removed.

今年以来，在北京的很多小区里，电梯液晶电视被撤了下来。